JP6953192B2

JP6953192B2 - Bus bar module resin case, bus bar module, and power supply

Info

Publication number: JP6953192B2
Application number: JP2017112673A
Authority: JP
Inventors: 秀人益木; 貴章江澤
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2017-06-07
Filing date: 2017-06-07
Publication date: 2021-10-27
Anticipated expiration: 2037-06-07
Also published as: JP2018206672A

Description

本発明は、ハイブリッド自動車や電気自動車などに用いられる電源装置を構成するバスバモジュールの樹脂ケース、該樹脂ケースを含むバスバモジュール、及び、該バスバモジュールを含む電源装置に関する。 The present invention relates to a resin case of a bus bar module constituting a power supply device used in a hybrid vehicle, an electric vehicle, or the like, a bus bar module including the resin case, and a power supply device including the bus bar module.

例えば、電動モータを用いて走行する電気自動車や、エンジンと電動モータとを併用して走行するハイブリッド自動車等の各種車両には、電動モータの動力源として電源装置が搭載されている。この種の電源装置は、一端に正の電極（以下「正極」と記す）、他端に負の電極（以下「負極」と記す）を有する複数の電池を、正極と負極とが交互に隣り合うように直線的に配列した電池集合体を備えている。この電池集合体には、電極が設けられた面に重ねられるように、特許文献１に示すようなバスバモジュールが設けられている。 For example, various vehicles such as an electric vehicle that travels by using an electric motor and a hybrid vehicle that travels by using an engine and an electric motor in combination are equipped with a power supply device as a power source of the electric motor. In this type of power supply device, a plurality of batteries having a positive electrode (hereinafter referred to as "positive electrode") at one end and a negative electrode (hereinafter referred to as "negative electrode") at the other end are alternately adjacent to each other. It has a battery assembly that is linearly arranged to fit. The battery assembly is provided with a bus module as shown in Patent Document 1 so as to be superposed on the surface on which the electrodes are provided.

バスバモジュールは、複数のバスバと、複数の電圧検出端子と、複数の電圧検出線と、樹脂ケースと、を備えている。複数のバスバは、複数の電池が直列接続されるように、電池集合体の隣接する電池の正極と負極を電気的に接続する。電圧検出線は、バスバに重ねられる電圧検出端子を介して、電池の電極に電気的に接続される。 The bus bar module includes a plurality of bus bars, a plurality of voltage detection terminals, a plurality of voltage detection lines, and a resin case. The plurality of buses electrically connect the positive electrode and the negative electrode of the adjacent batteries of the battery assembly so that the plurality of batteries are connected in series. The voltage detection line is electrically connected to the electrode of the battery via the voltage detection terminal superimposed on the bus bar.

樹脂ケースには、バスバ及び電圧検出端子を収容するバスバ収容部と、電圧検出線を収容する電線収容部とが設けられている。また、樹脂ケースには、電圧検出線の配索を終了した後に、電線収容部の上面開口を塞ぐ電線収容部カバーがヒンジで回動自在に設けられている。そして、バスバ収容部に収容したバスバ及び電圧検出端子を電池の電極にボルト・ナット等で締結した後に、カバーが被せられる。即ち、樹脂ケースとは別体に設けられたバスバ収容部カバーで、バスバ収容部の上面開口を覆うことが行われている。 The resin case is provided with a bus bar accommodating portion for accommodating the bus bar and the voltage detection terminal, and an electric wire accommodating portion for accommodating the voltage detection line. Further, the resin case is provided with a wire accommodating portion cover that closes the upper surface opening of the electric wire accommodating portion so as to be rotatable by a hinge after the wiring of the voltage detection line is completed. Then, after the bus bar and the voltage detection terminal housed in the bus bar accommodating portion are fastened to the electrodes of the battery with bolts, nuts, or the like, the cover is put on. That is, the upper surface opening of the bus bar accommodating portion is covered with a bass bar accommodating portion cover provided separately from the resin case.

このように、従来では、電線収容部カバーを樹脂ケースにヒンジで結合したものは多くあるが、バスバ収容部カバーは、樹脂ケースと別体に用意されていることが多い。別体の場合は、部品点数が増える分だけコスト増になりやすい。 As described above, in many cases, the electric wire accommodating portion cover is conventionally connected to the resin case with a hinge, but the bass bar accommodating portion cover is often prepared separately from the resin case. In the case of a separate body, the cost tends to increase as the number of parts increases.

一方、特許文献２には、バスバ収容部を覆うカバーを樹脂ケースの本体部にヒンジで一体に結合した例が示されている。従って、電線収容部カバーと同様に、バスバ収容部カバーも共に、樹脂ケースの本体部にヒンジを介して一体に結合することが考えられる。 On the other hand, Patent Document 2 shows an example in which a cover covering a bus bar accommodating portion is integrally connected to a main body portion of a resin case with a hinge. Therefore, like the electric wire accommodating portion cover, it is conceivable that the bass bar accommodating portion cover is integrally connected to the main body portion of the resin case via a hinge.

特開２０１４−２３３１５９号公報Japanese Unexamined Patent Publication No. 2014-233159 特開２０１５−１４９１８５号公報Japanese Unexamined Patent Publication No. 2015-149185

しかし、単純にバスバ収容部カバーも、電線収容部カバーと同様に、樹脂ケースの本体部にヒンジで結合するだけでは、部品点数は減らせても、組付工程を容易に進める上では課題が残る。 However, even if the number of parts can be reduced by simply connecting the bus bar housing cover to the main body of the resin case with a hinge, as with the wire housing cover, there remains a problem in facilitating the assembly process. ..

本発明は、上述した事情に鑑みてなされたものであり、その目的は、部品点数減によるコストの削減を図りながら、組付性の良さを発揮し得るバスバモジュールの樹脂ケースを提供することにある。併せて、本発明の目的は、前記樹脂ケースを含むバスバモジュール、及び該バスバモジュールを含む電源装置を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a resin case for a bus module that can exhibit good assembling property while reducing costs by reducing the number of parts. be. At the same time, an object of the present invention is to provide a bus bar module including the resin case and a power supply device including the bus bar module.

前述した目的を達成するために、本発明に係るバスバモジュールの樹脂ケース、バスバモジュール、及び電源装置は、下記（１）〜（４）を特徴としている。
（１）上面開口を有し、内部に、電池集合体の隣接する電池の電極間を接続するバスバが収容されるバスバ収容部と、
上面開口を有し、前記バスバ収容部に隣接配置されて結合され、内部に、前記バスバにそれぞれ電気的に接続される電線が収容される電線収容部と、
前記電線収容部の前記バスバ収容部と反対側の部分に第１ヒンジにより回動可能に結合され、閉方向の回動操作により前記電線収容部の上面開口を閉塞する第１カバーと、
前記第１カバーの前記第１ヒンジと反対側の先端縁に第２ヒンジにより回動可能に結合され、前記第１カバーが閉位置にある状態で閉方向に回動操作されることにより、前記バスバ収容部の上面開口を閉塞する第２カバーと、
前記第１カバーが閉位置にある状態で前記第２カバーを前記第２ヒンジから上方に向けて立ち上がる開位置に自立姿勢で仮係止し、その状態で前記第２カバーが閉方向に回動操作されることにより仮係止を解除する仮係止手段と、
前記第１カバー及び前記第２カバーを閉位置にロックするロック手段と、
を一体の樹脂成形品として備える、
バスバモジュールの樹脂ケース。
（２）上面開口を有し、内部に、電池集合体の隣接する電池の電極間を接続するバスバが収容されるバスバ収容部と、
上面開口を有し、前記バスバ収容部に隣接配置されて結合され、内部に、前記バスバにそれぞれ電気的に接続される電線が収容される電線収容部と、
前記電線収容部の前記バスバ収容部と反対側の部分に第１ヒンジにより回動可能に結合され、閉方向の回動操作により前記電線収容部の上面開口を閉塞する第１カバーと、
前記第１カバーの前記第１ヒンジと反対側の先端縁に第２ヒンジにより回動可能に結合され、前記第１カバーが閉位置にある状態で閉方向に回動操作されることにより、前記バスバ収容部の上面開口を閉塞する第２カバーと、
前記第１カバーが閉位置にある状態で前記第２カバーを開位置に自立姿勢で仮係止し、その状態で前記第２カバーが閉方向に回動操作されることにより仮係止を解除する仮係止手段と、
前記第１カバー及び前記第２カバーを閉位置にロックするロック手段と、
を一体の樹脂成形品として備え、
前記仮係止手段は、
前記第２カバーに突設された可撓性の仮係止リブと、
前記バスバ収容部に設けられ、前記第１カバーが閉位置にある状態で前記仮係止リブの先端が乗ることにより前記第２カバーを前記開位置に自立姿勢で仮係止し、その状態で前記第２カバーが閉方向に回動操作されることにより、前記仮係止リブの先端を滑らせて前記仮係止状態を解除し、前記第２カバーの閉方向の回動を許容する仮係止斜面と、
を含む、
ことを特徴とするバスバモジュールの樹脂ケース。
（３）直線的に配列された複数の電池よりなる電池集合体の前記電池が直列接続されるように、隣接する前記電池の正極と負極との間を電気的に接続する複数のバスバと、
前記各バスバを介してそれぞれ前記正極または負極に電気的に接続される複数の電圧検出線と、
少なくとも１つの前記バスバと前記複数の電圧検出線を収容する樹脂ケースと、
を備え、
前記樹脂ケースとして上記（１）または（２）の構成の樹脂ケースが用いられており、
前記樹脂ケースの前記バスバ収容部に前記バスバが収容され、
前記樹脂ケースの前記電線収容部に前記複数の電圧検出線が収容されている、
バスバモジュール。
（４）直線的に配列された複数の電池で構成された電池集合体と、前記電池集合体に重ねて取り付けられるとともに前記各電池を互いに電気的に接続するバスバモジュールと、
を有する電源装置において、
前記バスバモジュールとして、上記（３）に記載のバスバモジュールを有している、
電源装置。 In order to achieve the above-mentioned object, the resin case, the bus bar module, and the power supply device of the bus bar module according to the present invention are characterized by the following (1) to (4).
(1) A bus bar accommodating portion having a top opening and accommodating a bus bar connecting between electrodes of adjacent batteries of a battery assembly inside.
An electric wire accommodating portion having an upper surface opening, adjacent to and coupled to the bus bar accommodating portion, and internally accommodating electric wires electrically connected to the bus bar.
A first cover that is rotatably coupled to a portion of the electric wire accommodating portion opposite to the bus bar accommodating portion by a first hinge and closes the upper surface opening of the electric wire accommodating portion by a rotation operation in the closing direction.
The first cover is rotatably coupled to the tip edge opposite to the first hinge by a second hinge, and is rotated in the closing direction while the first cover is in the closed position. A second cover that closes the upper opening of the bus bar housing,
With the first cover in the closed position, the second cover is temporarily locked in an open position in which it rises upward from the second hinge in an independent posture, and in that state, the second cover rotates in the closing direction. Temporary locking means that releases the temporary locking by being operated, and
A locking means for locking the first cover and the second cover in a closed position,
As an integrated resin molded product,
Resin case for Basba module.
(2) A bus bar accommodating portion having a top opening and accommodating a bus bar connecting between electrodes of adjacent batteries of a battery assembly inside.
An electric wire accommodating portion having an upper surface opening, adjacent to and coupled to the bus bar accommodating portion, and internally accommodating electric wires electrically connected to the bus bar.
A first cover that is rotatably coupled to a portion of the electric wire accommodating portion opposite to the bus bar accommodating portion by a first hinge and closes the upper surface opening of the electric wire accommodating portion by a rotation operation in the closing direction.
The first cover is rotatably coupled to the tip edge opposite to the first hinge by a second hinge, and is rotated in the closing direction while the first cover is in the closed position. A second cover that closes the upper opening of the bus bar housing,
With the first cover in the closed position, the second cover is temporarily locked in the open position in an independent posture, and in that state, the second cover is rotated in the closing direction to release the temporary lock. Temporary locking means and
A locking means for locking the first cover and the second cover in a closed position,
As an integrated resin molded product,
The temporary locking means is
A flexible temporary locking rib projecting from the second cover,
Wherein provided in the bus bar accommodating portion, sealed and tentatively retaining freestanding position said second cover to said open position by said first cover ride the tip of the temporary engaging rib in the closed position, in that state When the second cover is rotated in the closing direction, the tip of the temporary locking rib is slid to release the temporary locking state, and the temporary locking rib is allowed to rotate in the closing direction. Locking slope and
including,
The resin case of the bus module that is characterized by this.
(3) A plurality of buses that electrically connect between the positive electrode and the negative electrode of the adjacent batteries so that the batteries of the battery assembly consisting of a plurality of batteries arranged linearly are connected in series.
A plurality of voltage detection lines electrically connected to the positive electrode or the negative electrode via the respective bus bars, and
A resin case accommodating at least one bus bar and the plurality of voltage detection lines, and
With
As the resin case, the resin case having the above configuration (1) or (2) is used.
The bus bar is housed in the bus bar accommodating portion of the resin case.
The plurality of voltage detection lines are housed in the wire accommodating portion of the resin case.
Bus bar module.
(4) A battery assembly composed of a plurality of linearly arranged batteries, and a bus module that is mounted on the battery assembly and electrically connects the batteries to each other.
In a power supply with
As the bus module, the bus module according to (3) above is provided.
Power supply.

上記（１）の構成のバスバモジュールの樹脂ケースによれば、電線収容部の上面開口を第１カバーで閉じた後に、バスバ収容部を閉塞する第２カバーの閉じ操作を別個に行うことができる。具体的な工程の順序としては、まず、樹脂ケースのバスバ収容部にバスバを組み付ける。併せて、電圧検出線を配索して、樹脂ケースの電線収容部に電圧検出線を収容する。次いで、その状態で、電線収容部からの電圧検出線の飛び出しを防止するために、第１カバーだけを閉じる。このとき、次の工程でバスバを電池に固定するため、第２カバーは、仮係止手段によって、開いた状態に自立姿勢で仮係止しておく。次にバスバ収容部の上面開口を通してバスバを電池の電極に固定する。この工程を終えたら、第２カバーを閉じ方向へ回動操作する。そうすると、仮係止手段による仮係止状態が自動的に解除されて、第２カバーの閉じ方向への回動操作が可能になる。そして、第２カバーを閉じ方向に回動操作することにより、バスバ収容部の上面開口を第２カバーで覆うことができる。それにより、バスバと電極の固定部を絶縁保護して感電等を防止することができる。
このように、バスバモジュールの電池へ組付時（バスバの電池への固定時）には、電線収容部を覆う第１カバーを閉じた状態にしておくことができる。そのため、樹脂ケースの幅を小さい状態にして、バスバモジュールを電池に組み付けることができる。従って、樹脂ケースが電池に干渉することによって、バスバモジュールの組付作業性が損なわれるようなことがない。また、バスバモジュールの電池へ組付時に、電線収容部を覆う第１カバーを閉じた状態にしながら、バスバ収容部を覆う第２カバーを自立姿勢で開いた状態に保っておくことができる。そのため、バスバを電池の電極にボルト・ナット等で締結する組付作業を容易に進めることができる。
また、電線収容部を閉塞する第１カバーの先端に、バスバ収容部を閉塞する第２カバーを一体に設けている。そのため、バスバ収容部のカバーを樹脂ケースと別体で設ける場合に比べて、部品点数の削減によるコスト低減を図ることができる。また、第１カバーの先端にヒンジを介して第２カバーを連結した構成にするだけであるので、構造が簡単であり、成形コストの低減が図れて、コスト低減に寄与することができる。また、第１カバーと第２カバーが一体のカバーとして構成されているので、カバーを全開した状態で、カバーに邪魔されずに、バスバに電気的に接続された電圧検出線の配索を行うことができる。
上記（２）の構成のバスバモジュールの樹脂ケースによれば、仮係止リブと仮係止斜面が係合することによって、第２カバーを開位置に自立姿勢で仮保持しておくことができる。また、その状態で第２カバーを閉じ方向に回動操作することにより、仮係止リブの先端を仮係止斜面に沿って滑らせることができ、仮係止を解除することができる。従って、簡単な構成及び簡単な操作で、第２カバーの仮係止と仮係止の解除を行うことができ、コスト低減に寄与することができる。
上記（３）の構成のバスバモジュールによれば、上記（１）または（２）の構成の樹脂ケースを用いたことにより、上述の作用効果を得ることができる。
上記（４）の構成の電源装置によれば、上記（３）の構成のバスバモジュールを用いたことにより、上述の作用効果を得ることができる。 According to the resin case of the bus bar module having the configuration of (1) above, after closing the upper surface opening of the electric wire accommodating portion with the first cover, the operation of closing the second cover that closes the bus bar accommodating portion can be performed separately. .. As a specific process sequence, first, the bus bar is assembled to the bus bar accommodating portion of the resin case. At the same time, the voltage detection line is arranged to accommodate the voltage detection line in the electric wire accommodating portion of the resin case. Then, in that state, only the first cover is closed in order to prevent the voltage detection line from popping out from the electric wire accommodating portion. At this time, in order to fix the bus bar to the battery in the next step, the second cover is temporarily locked in an open state in an independent posture by a temporary locking means. Next, the bus bar is fixed to the electrode of the battery through the opening on the upper surface of the bus bar accommodating portion. After finishing this step, the second cover is rotated in the closing direction. Then, the temporary locking state by the temporary locking means is automatically released, and the second cover can be rotated in the closing direction. Then, by rotating the second cover in the closing direction, the upper surface opening of the bus bar accommodating portion can be covered with the second cover. As a result, it is possible to insulate and protect the fixed portion between the bus bar and the electrode to prevent electric shock and the like.
As described above, when the bus bar module is assembled to the battery (when the bus bar is fixed to the battery), the first cover covering the electric wire accommodating portion can be kept closed. Therefore, the bus module can be assembled to the battery with the width of the resin case reduced. Therefore, the resin case does not interfere with the battery, and the workability of assembling the bus module is not impaired. Further, when the battery of the bus bar module is assembled, the first cover covering the electric wire accommodating portion can be kept closed, while the second cover covering the bus bar accommodating portion can be kept open in a self-supporting posture. Therefore, the assembly work of fastening the bus bar to the electrode of the battery with bolts, nuts, or the like can be easily proceeded.
Further, a second cover that closes the bus bar accommodating portion is integrally provided at the tip of the first cover that closes the electric wire accommodating portion. Therefore, the cost can be reduced by reducing the number of parts as compared with the case where the cover of the bus bar accommodating portion is provided separately from the resin case. Further, since the second cover is only connected to the tip of the first cover via a hinge, the structure is simple, the molding cost can be reduced, and the cost can be reduced. Further, since the first cover and the second cover are configured as an integral cover, the voltage detection line electrically connected to the bus bar is routed without being disturbed by the cover with the cover fully opened. be able to.
According to the resin case of the bus module having the configuration of (2) above, the temporary locking rib and the temporary locking slope can be engaged with each other to temporarily hold the second cover in the open position in an independent posture. .. Further, by rotating the second cover in the closing direction in that state, the tip of the temporary locking rib can be slid along the temporary locking slope, and the temporary locking can be released. Therefore, the temporary locking and the temporary locking of the second cover can be performed with a simple configuration and a simple operation, which can contribute to cost reduction.
According to the bus module having the configuration of (3) above, the above-mentioned effects can be obtained by using the resin case having the configuration of (1) or (2) above.
According to the power supply device having the configuration (4), the above-mentioned effects can be obtained by using the bus module having the configuration (3).

本発明によれば、部品点数減によるコストの削減を図りながら、組付性の良さを発揮することができる。 According to the present invention, good assembling property can be exhibited while reducing the cost by reducing the number of parts.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態（以下、「実施形態」という。）を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。 The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

図１は、本発明の実施形態の電源装置の部分外観斜視図である。FIG. 1 is a partial external perspective view of the power supply device according to the embodiment of the present invention. 図２は、本発明の実施形態のバスバモジュールの部分分解斜視図である。FIG. 2 is a partially exploded perspective view of the bus module according to the embodiment of the present invention. 図３は、本発明の実施形態の樹脂ケースのカバー全開時の断面図である。FIG. 3 is a cross-sectional view of the resin case according to the embodiment of the present invention when the cover is fully opened. 図４は、本発明の実施形態の樹脂ケースの第１カバー閉塞時の断面図で、（ａ）は全体図、（ｂ）は（ａ）のＡ１部の拡大図である。4A and 4B are cross-sectional views of the resin case according to the embodiment of the present invention when the first cover is closed, where FIG. 4A is an overall view and FIG. 4B is an enlarged view of part A1 of FIG. 4A. 図５は、本発明の実施形態の樹脂ケースの第１カバー及び第２カバーの閉塞時の断面図で、（ａ）は全体図、（ｂ）は（ａ）のＡ２部の拡大図である。5A and 5B are cross-sectional views of the first cover and the second cover of the resin case according to the embodiment of the present invention when the first cover and the second cover are closed. FIG. 5A is an overall view, and FIG. .. 図６は、比較例の電源装置の部分分解斜視図である。FIG. 6 is a partially exploded perspective view of the power supply device of the comparative example. 図７は、比較例の電源装置の部分外観斜視図である。FIG. 7 is a partial external perspective view of the power supply device of the comparative example. 図８は、比較例のバスバモジュールの部分外観斜視図である。FIG. 8 is a partial external perspective view of the bus module of the comparative example. 図９は、別の比較例の概略断面図である。FIG. 9 is a schematic cross-sectional view of another comparative example. 図１０は、さらに別の比較例の概略断面図である。FIG. 10 is a schematic cross-sectional view of still another comparative example. 図１１は、さらに別の比較例の概略断面図である。FIG. 11 is a schematic cross-sectional view of still another comparative example.

本発明に関する具体的な実施形態について、各図を参照しながら以下に説明する。
以下、本実施形態に係るバスバモジュールの樹脂ケース、バスバモジュール、及び電源装置を、図面を参照して説明する。図１は、本実施形態に係る電源装置の部分外観斜視図、図２は、バスバモジュールの部分分解斜視図である。図３は、樹脂ケースのカバー全開時の断面図、図４は、樹脂ケースの第１カバー閉塞時の断面図で、（ａ）は全体図、（ｂ）は（ａ）のＡ１部の拡大図である。図５は、樹脂ケースの第１カバー及び第２カバーの閉塞時の断面図で、（ａ）は全体図、（ｂ）は（ａ）のＡ２部の拡大図である。また、図６は、比較例の電源装置の部分分解斜視図、図７は、比較例の電源装置の部分外観斜視図、図８は、比較例のバスバモジュールの部分外観斜視図である。なお、説明の便宜上、各図において、矢印Ｘ、矢印Ｙ、及び矢印Ｚを用いて、各部材の配設方向等を示す。これら矢印Ｘ、矢印Ｙ、及び矢印Ｚは互いに直交している。 Specific embodiments of the present invention will be described below with reference to the respective figures.
Hereinafter, the resin case, the bus bar module, and the power supply device of the bus bar module according to the present embodiment will be described with reference to the drawings. FIG. 1 is a partial external perspective view of the power supply device according to the present embodiment, and FIG. 2 is a partially exploded perspective view of the bus bar module. 3 is a cross-sectional view of the resin case when the cover is fully opened, FIG. 4 is a cross-sectional view of the resin case when the first cover is closed, FIG. 3A is an overall view, and FIG. It is a figure. 5A and 5B are cross-sectional views of the first cover and the second cover of the resin case when the first cover and the second cover are closed. FIG. 5A is an overall view, and FIG. 6 is a partially disassembled perspective view of the power supply device of the comparative example, FIG. 7 is a partial external perspective view of the power supply device of the comparative example, and FIG. 8 is a partial external perspective view of the bus bar module of the comparative example. For convenience of explanation, arrows X, Y, and Z are used in each figure to indicate the arrangement direction of each member. These arrows X, Y, and Z are orthogonal to each other.

図１に示す電源装置１は、電池集合体２と、この電池集合体２に重ねて取り付けられるバスバモジュール１０と、を備えている。この電源装置１は、電動モータを用いて走行する電気自動車や、エンジンと電動モータを併用して走行するハイブリッド自動車等に搭載されて用いられ、電動モータに動力を供給するものである。 The power supply device 1 shown in FIG. 1 includes a battery assembly 2 and a bus module 10 mounted on the battery assembly 2 in an overlapping manner. The power supply device 1 is mounted on and used in an electric vehicle traveling by using an electric motor, a hybrid vehicle traveling by using an engine and an electric motor in combination, and the like, and supplies power to the electric motor.

電池集合体２は、一方向（矢印Ｘ方向）に沿って直線的に一列に配列され且つ互いに固定された複数の電池３で構成されている。電池集合体２の構成は、図６の比較例と同じであるので、図６を用いて説明する。各電池３は、直方体状の電池本体の上面の一端及び他端に一対の電極４Ａ、４Ｂを備えている。一対の電極４Ａ、４Ｂのうち一方の電極は正極４Ａ、他方の電極は負極４Ｂである。一対の電極４Ａ、４Ｂは、それぞれ、導電性の金属により円柱状に形成されている。各電池３は、一対の電極４Ａ、４Ｂを備える面（上面）を上に向け、隣り合う電池３が互いに接するように配列されている。しかも、１つの電池３の正極４Ａと隣接する他の電池３の負極４Ｂとが交互に隣り合うように配列されている。従って、矢印Ｙ方向の一端側及び他端側においてそれぞれ、矢印Ｘ方向に沿って正極４Ａと負極４Ｂが交互に並んでいる。 The battery assembly 2 is composed of a plurality of batteries 3 that are linearly arranged in a line along one direction (arrow X direction) and fixed to each other. Since the configuration of the battery assembly 2 is the same as that of the comparative example of FIG. 6, it will be described with reference to FIG. Each battery 3 is provided with a pair of electrodes 4A and 4B at one end and the other end of the upper surface of the rectangular parallelepiped battery body. Of the pair of electrodes 4A and 4B, one electrode is the positive electrode 4A and the other electrode is the negative electrode 4B. The pair of electrodes 4A and 4B are each formed in a columnar shape by a conductive metal. Each battery 3 is arranged so that the surface (upper surface) including the pair of electrodes 4A and 4B faces upward and the adjacent batteries 3 are in contact with each other. Moreover, the positive electrode 4A of one battery 3 and the negative electrode 4B of the other adjacent batteries 3 are arranged so as to be alternately adjacent to each other. Therefore, the positive electrode 4A and the negative electrode 4B are alternately arranged along the arrow X direction on one end side and the other end side in the arrow Y direction, respectively.

図１及び図２に示すバスバモジュール１０は、前述した複数の電池３を直列に接続するものである。バスバモジュール１０は、バスバ１１と、電圧検出端子１２と、電圧検出線（電線）１３と、樹脂ケース２０と、を備えている。ここで、樹脂ケース２０は、４個の電池３に対応するサイズを１つの単位Ｎとして形成され、この単位Ｎの大きさの樹脂ケース２０を順次連結することで、全部の電池３に対応する大きさに構成されている。 The bus module 10 shown in FIGS. 1 and 2 connects the plurality of batteries 3 described above in series. The bus bar module 10 includes a bus bar 11, a voltage detection terminal 12, a voltage detection line (electric wire) 13, and a resin case 20. Here, the resin case 20 is formed with a size corresponding to the four batteries 3 as one unit N, and by sequentially connecting the resin cases 20 having a size of the unit N, the resin case 20 corresponds to all the batteries 3. It is configured in size.

バスバ１１は、電池集合体２の互いに隣り合う電池３の正極４Ａと負極４Ｂ（図６参照）とに取り付けられることで、これら各電池３を直列に接続する。バスバ１１は、導電性の金属板にプレス加工が施されるなどして得られるものであり、略長方形板状の金属板に、互いに隣り合う電池３の正極４Ａ及び負極４Ｂが通される一対の孔１１ａを有する。これら一対の孔１１ａは、バスバ１１の長手方向（Ｘ方向）に沿って、互いに隣り合う電池３の正極４Ａ及び負極４Ｂと同じ間隔をあけて配置されている。また、バスバ１１は、孔１１ａに通された正極４Ａ及び負極４Ｂにナット（図示なし）が螺合されることで、電池３に取り付けられると共に、該正極４Ａ及び該負極４Ｂに電気的に接続される。 The bus bar 11 is attached to the positive electrode 4A and the negative electrode 4B (see FIG. 6) of the batteries 3 adjacent to each other in the battery assembly 2, so that each of the batteries 3 is connected in series. The bus bar 11 is obtained by pressing a conductive metal plate or the like, and a pair of positive electrode 4A and negative electrode 4B of batteries 3 adjacent to each other are passed through a metal plate having a substantially rectangular plate shape. Has a hole 11a. These pair of holes 11a are arranged along the longitudinal direction (X direction) of the bus bar 11 at the same intervals as the positive electrode 4A and the negative electrode 4B of the batteries 3 adjacent to each other. Further, the bus bar 11 is attached to the battery 3 by screwing nuts (not shown) into the positive electrode 4A and the negative electrode 4B passed through the holes 11a, and is electrically connected to the positive electrode 4A and the negative electrode 4B. Will be done.

電圧検出端子１２は、対応するバスバ１１に重ねて配置されて、該バスバ１１を介して互いに隣り合う電池３０の正極４Ａ及び負極４Ｂに接続される。電圧検出端子１２は、導電性の金属板にプレス加工が施されるなどして得られるものであり、バスバ接続部１２ａと、電線取付部１２ｂと、を備えている。 The voltage detection terminal 12 is arranged so as to be overlapped with the corresponding bus bar 11, and is connected to the positive electrode 4A and the negative electrode 4B of the batteries 30 adjacent to each other via the bus bar 11. The voltage detection terminal 12 is obtained by pressing a conductive metal plate or the like, and includes a bus bar connection portion 12a and an electric wire attachment portion 12b.

バスバ接続部１２ａは、バスバ１１に重ねられて該バスバ１１と電気的に接続される部位であり、その中央部には、１つの孔１２ｃが設けられている。孔１２ｃは、バスバ１１の一対の孔１１ａの一方と重ねられて、電池３の正極４Ａまたは負極４Ｂが通される。バスバ接続部１２ａは、バスバ１１に重ねられた状態で上記ナットによって電池３に取り付けられる。 The bus bar connection portion 12a is a portion that is overlapped with the bus bar 11 and electrically connected to the bus bar 11, and one hole 12c is provided in the central portion thereof. The hole 12c is overlapped with one of the pair of holes 11a of the bus bar 11, and the positive electrode 4A or the negative electrode 4B of the battery 3 is passed through the hole 12c. The bus bar connection portion 12a is attached to the battery 3 by the nut in a state of being overlapped with the bus bar 11.

電線取付部１２ｂは、バスバ接続部１２ａから平行に延設されており、先端部分に電圧検出線１３が電気的に接続されている。従って、電圧検出線１３は、バスバ１１を介して各電池３の正極４Ａ及び負極４Ｂに接続されている。電圧検出線１３は、図示しないＥＣＵ（Electronic Control Unit）が備える電圧検出回路に接続される。そして、該ＥＣＵが、電圧検出回路によって検出された各電池３における一対の電極４Ａ、４Ｂとの電位差（電圧）に基づいて、各電池３の残量や充放電状態等を検出する。なお、電圧検出線１３は周知の被覆電線であり、先端の絶縁被覆が皮剥きされて露出した芯線が電圧検出端子１２に加締められている。 The electric wire mounting portion 12b extends in parallel from the bus bar connecting portion 12a, and the voltage detection line 13 is electrically connected to the tip portion. Therefore, the voltage detection line 13 is connected to the positive electrode 4A and the negative electrode 4B of each battery 3 via the bus bar 11. The voltage detection line 13 is connected to a voltage detection circuit included in an ECU (Electronic Control Unit) (not shown). Then, the ECU detects the remaining amount, charge / discharge state, etc. of each battery 3 based on the potential difference (voltage) between the pair of electrodes 4A and 4B in each battery 3 detected by the voltage detection circuit. The voltage detection wire 13 is a well-known covered electric wire, and the core wire exposed by peeling the insulating coating at the tip is crimped to the voltage detection terminal 12.

樹脂ケース２０は、上述したバスバ１１及び電圧検出端子１２や電圧検出線１３を収容保持するもので、合成樹脂の一体成形品で構成されている。ここでは、４個の電池３に対応する１つの単位Ｎの樹脂ケース２０には、２つのバスバ１１と２つの電圧検出端子１２が収容される。バスバ１１は、４個並んだ電池３のうち、それぞれ隣り合う２個の電池３の正極４Ａと負極４Ｂに跨がって配置される。図２中のＮ１は、各１個のバスバ１１がそれぞれ配置される単位（２個の電池３に対応）を示している。 The resin case 20 accommodates and holds the above-mentioned bus bar 11, the voltage detection terminal 12, and the voltage detection line 13, and is made of an integrally molded synthetic resin. Here, two bus bars 11 and two voltage detection terminals 12 are housed in a resin case 20 having one unit N corresponding to the four batteries 3. The bus bar 11 is arranged so as to straddle the positive electrode 4A and the negative electrode 4B of two adjacent batteries 3 among the four batteries 3 arranged side by side. N1 in FIG. 2 indicates a unit (corresponding to two batteries 3) in which each one bus bar 11 is arranged.

図３に断面を示すように、樹脂ケース２０は、ケース本体２１とカバー４１をヒンジ（第１ヒンジ４５）を介して一体に連結した構造を有している。ケース本体２１には、バスバ収容部２２と、電線収容部２３と、バスバ収容部２２及び電線収容部２３を連結する連結部２４と、が設けられている。バスバ収容部２２には、バスバ１１及び電圧検出端子１２が収容される。電線収容部２３には、電圧検出線１３が収容される。カバー４１には、第１カバー４２と、第２カバー４３と、第１カバー４２及び第２カバー４３を連結するヒンジ（第２ヒンジ４６）と、が設けられている。また、ケース本体２１とカバー４１との間には、後述する仮係止手段とロック手段とが設けられている。 As shown in the cross section in FIG. 3, the resin case 20 has a structure in which the case main body 21 and the cover 41 are integrally connected via a hinge (first hinge 45). The case main body 21 is provided with a bus bar accommodating portion 22, an electric wire accommodating portion 23, and a connecting portion 24 connecting the bus bar accommodating portion 22 and the electric wire accommodating portion 23. The bus bar 11 and the voltage detection terminal 12 are housed in the bus bar accommodating portion 22. The voltage detection line 13 is accommodated in the electric wire accommodating portion 23. The cover 41 is provided with a first cover 42, a second cover 43, and a hinge (second hinge 46) for connecting the first cover 42 and the second cover 43. Further, a temporary locking means and a locking means, which will be described later, are provided between the case body 21 and the cover 41.

樹脂ケース２０のバスバ収容部２２は、バスバ１１や電圧検出端子１２が載置される底壁３１と、底壁３１のＹ方向両端縁から起立する一対の側壁３２、３３とを有する。一対の側壁３２、３３は、電池３の配列方向（図２中のＸ方向）に沿うように設けられており、一対の側壁３２、３３間の上方には上面開口２２ａが設けられている。 The bus bar accommodating portion 22 of the resin case 20 has a bottom wall 31 on which the bus bar 11 and the voltage detection terminal 12 are placed, and a pair of side walls 32 and 33 rising from both ends in the Y direction of the bottom wall 31. The pair of side walls 32 and 33 are provided along the arrangement direction of the batteries 3 (the X direction in FIG. 2), and an upper surface opening 22a is provided above the pair of side walls 32 and 33.

樹脂ケース２０の電線収容部２３は、電圧検出線１３の束が収容される樋状の部分で、底壁３４と、底壁３４のＹ方向両端縁から起立する一対の側壁３５、３６とを有する。一対の側壁３５、３６は、電池３の配列方向（図２中のＸ方向）に沿うように設けられており、一対の側壁３５、３６間の上方には上面開口２３ａが設けられている。 The electric wire accommodating portion 23 of the resin case 20 is a gutter-shaped portion accommodating a bundle of voltage detection lines 13, and includes a bottom wall 34 and a pair of side walls 35 and 36 rising from both ends in the Y direction of the bottom wall 34. Have. The pair of side walls 35 and 36 are provided along the arrangement direction of the batteries 3 (the X direction in FIG. 2), and an upper surface opening 23a is provided above the pair of side walls 35 and 36.

樹脂ケース２０の連結部２４は、隣接して配置されたバスバ収容部２２及び電線収容部２３の隣り合う側壁３３、３５を連結するものである。この連結部２４には、電圧検出端子１２の電線取付部１２ｂと電圧検出線１３との接続部分を収容する図示略の溝部が設けられている。そして、この溝部に、上方から前記接続部分を挿入できるようになっている。 The connecting portion 24 of the resin case 20 connects the adjacent side walls 33 and 35 of the bus bar accommodating portion 22 and the electric wire accommodating portion 23 arranged adjacent to each other. The connecting portion 24 is provided with a groove portion (not shown) for accommodating a connecting portion between the electric wire mounting portion 12b of the voltage detection terminal 12 and the voltage detection line 13. Then, the connecting portion can be inserted into the groove from above.

樹脂ケース２０のカバー４１は、電線収容部２３からバスバ収容部２２までを覆うことのできる大きさの屈曲可能な矩形状の板体として形成されている。このカバー４１は、ヒンジ（第２ヒンジ４６）で連結された第１カバー４２と第２カバー４３とを有している。第１カバー４２は、電線収容部２３のバスバ収容部２２と反対側の側壁３６の上端に第１ヒンジ４５により、図４中矢印Ａのように回動可能に結合されている。そして、第１カバー４２は、閉方向の回動操作により電線収容部２３の上面開口２３ａを閉塞する。第２カバー４３は、第１カバー４２の第１ヒンジ４５と反対側の先端縁に第２ヒンジ４６により、図４中矢印Ｂのように回動可能に結合されている。そして、第１カバー４２が閉位置にある状態で閉方向に回動操作されることにより、バスバ収容部２２の上面開口２２ａを閉塞する。 The cover 41 of the resin case 20 is formed as a bendable rectangular plate having a size capable of covering from the electric wire accommodating portion 23 to the bus bar accommodating portion 22. The cover 41 has a first cover 42 and a second cover 43 connected by a hinge (second hinge 46). The first cover 42 is rotatably connected to the upper end of the side wall 36 on the side opposite to the bus bar accommodating portion 22 of the electric wire accommodating portion 23 by the first hinge 45 as shown by an arrow A in FIG. Then, the first cover 42 closes the upper surface opening 23a of the electric wire accommodating portion 23 by the rotation operation in the closing direction. The second cover 43 is rotatably connected to the tip edge of the first cover 42 opposite to the first hinge 45 by a second hinge 46 as shown by an arrow B in FIG. Then, by rotating the first cover 42 in the closing direction while the first cover 42 is in the closed position, the upper surface opening 22a of the bus bar accommodating portion 22 is closed.

第２カバー４３の第２ヒンジ４６の近傍と、それに対応するバスバ収容部２２の連結部２４側の側壁３３の上端には、仮係止手段として、可撓性の仮係止リブ５１と仮係止斜面５２とがそれぞれ設けられている。仮係止リブ５１及び仮係止斜面５２は、図４に示すように、第１カバー４２が閉位置にある状態のとき、バスバ収容部２２を上面開口２２ａを開放するために、第２カバー４３を開位置に自立姿勢で仮係止する。また、仮係止リブ５１及び仮係止斜面５２は、図５に示すように、仮係止の状態で第２カバー４３が閉方向（矢印Ｂ方向）に回動操作されることにより、仮係止を解除する。 A flexible temporary locking rib 51 and a temporary locking rib 51 are provided at the vicinity of the second hinge 46 of the second cover 43 and the upper end of the side wall 33 on the connecting portion 24 side of the corresponding bus bar accommodating portion 22 as temporary locking means. A locking slope 52 and a locking slope 52 are provided respectively. As shown in FIG. 4, the temporary locking rib 51 and the temporary locking slope 52 have a second cover for opening the upper surface opening 22a of the bus bar accommodating portion 22 when the first cover 42 is in the closed position. The 43 is temporarily locked in the open position in an independent posture. Further, as shown in FIG. 5, the temporary locking rib 51 and the temporary locking slope 52 are temporarily locked by rotating the second cover 43 in the closing direction (arrow B direction) in the temporarily locked state. Release the lock.

即ち、仮係止リブ５１及び仮係止斜面５２は、図４に示すように、第１カバー４２が閉位置にある状態で仮係止リブ５１の先端が仮係止斜面５２に乗ることにより、第２カバー４３を開位置に自立姿勢で仮係止する。またその状態で、第２カバー４３が閉方向に回動操作されることにより、図５（ｂ）中矢印Ｃで示すように、仮係止リブ５１の先端を仮係止斜面５２で滑らせて仮係止状態を解除する。そして、第２カバー４３の閉方向の回動を可能にする。 That is, as shown in FIG. 4, the temporary locking rib 51 and the temporary locking slope 52 are formed by the tip of the temporary locking rib 51 riding on the temporary locking slope 52 while the first cover 42 is in the closed position. , The second cover 43 is temporarily locked in the open position in an independent posture. Further, in this state, the second cover 43 is rotated in the closing direction, so that the tip of the temporary locking rib 51 is slid on the temporary locking slope 52 as shown by the arrow C in FIG. 5 (b). To release the temporary locked state. Then, the second cover 43 can be rotated in the closing direction.

また、樹脂ケース２０のケース本体２１とカバー４１との間には、ロック手段として、互いに係合する第１〜第３の被ロック部３７、３８、３９とロック部４７、４８、４９の組が設けられている。 Further, between the case body 21 of the resin case 20 and the cover 41, a set of first to third locked portions 37, 38, 39 and lock portions 47, 48, 49 that engage with each other as locking means. Is provided.

第１の被ロック部３７とロック部４７の組は、第１カバー４２が電線収容部２３の上面開口２３ａを閉塞したとき、第１カバー４２の第１ヒンジ４５に近い部分を拘束する。そのため、第１の被ロック部３７とロック部４７は、第１ヒンジ４５に近い、電線収容部２３のバスバ収容部２２とは反対側の側壁３６の上端と、第１カバー４２の基端部とにそれぞれ設けられている。 The pair of the first locked portion 37 and the locked portion 47 restrains the portion of the first cover 42 close to the first hinge 45 when the first cover 42 closes the upper surface opening 23a of the electric wire accommodating portion 23. Therefore, the first locked portion 37 and the locked portion 47 are the upper end of the side wall 36 of the electric wire accommodating portion 23 opposite to the bus bar accommodating portion 22, which is close to the first hinge 45, and the base end portion of the first cover 42. And are provided respectively.

第２の被ロック部３８とロック部４８の組は、第１カバー４２が電線収容部２３の上面開口２３ａを閉塞したとき、第１カバー４２の第２ヒンジ４６に近い部分を拘束する。そのため、第２の被ロック部３８とロック部４８は、第２ヒンジ４６に近い、電線収容部２３のバスバ収容部２２側の側壁３５の上端と、第１カバー４２の先端部とに設けられている。 The pair of the second locked portion 38 and the locked portion 48 restrains the portion of the first cover 42 close to the second hinge 46 when the first cover 42 closes the upper surface opening 23a of the electric wire accommodating portion 23. Therefore, the second locked portion 38 and the locked portion 48 are provided at the upper end of the side wall 35 on the bus bar accommodating portion 22 side of the electric wire accommodating portion 23 and the tip end portion of the first cover 42, which are close to the second hinge 46. ing.

第３の被ロック部３９とロック部４９の組は、第２カバー４３がバスバ収容部２２の上面開口２２ａを閉塞したとき、第２カバー４３の先端部を拘束する。そのため、第３の被ロック部３９とロック部４９は、バスバ収容部２２の電線収容部２３とは反対側の側壁３２の上端と、第２カバー４３の先端部とに設けられている。 The pair of the third locked portion 39 and the locked portion 49 restrains the tip end portion of the second cover 43 when the second cover 43 closes the upper surface opening 22a of the bus bar accommodating portion 22. Therefore, the third locked portion 39 and the locked portion 49 are provided at the upper end of the side wall 32 on the side opposite to the electric wire accommodating portion 23 of the bus bar accommodating portion 22 and at the tip end portion of the second cover 43.

次に作用を説明する。
この樹脂ケース２０を使用した場合、図４及び図５に示すように、電線収容部２３の上面開口２３ａを第１カバー４２で閉じた後に、バスバ収容部２２を閉塞する第２カバー４３の閉じ操作を別個に行うことができる。 Next, the operation will be described.
When this resin case 20 is used, as shown in FIGS. 4 and 5, the upper surface opening 23a of the electric wire accommodating portion 23 is closed by the first cover 42, and then the second cover 43 that closes the bus bar accommodating portion 22 is closed. The operations can be performed separately.

具体的な工程の順序としては、まず、樹脂ケース２０のバスバ収容部２２に、バスバ１１及び電圧検出端子１２を組み付ける。併せて、電圧検出線１３を配索して、樹脂ケース２０の電線収容部２３に電圧検出線１３を収容する。次いで、その状態で、電線収容部２３からの電圧検出線１３の飛び出しを防止するために、図４に示すように、矢印Ａの方向に回動させて第１カバー４２だけを閉じる。 As a specific process sequence, first, the bus bar 11 and the voltage detection terminal 12 are assembled to the bus bar accommodating portion 22 of the resin case 20. At the same time, the voltage detection line 13 is arranged to accommodate the voltage detection line 13 in the electric wire accommodating portion 23 of the resin case 20. Then, in that state, in order to prevent the voltage detection line 13 from popping out from the electric wire accommodating portion 23, as shown in FIG. 4, it is rotated in the direction of the arrow A to close only the first cover 42.

このとき、第１の被ロック部３７とロック部４７が互いに係合すると共に、第２の被ロック部３８とロック部４８が互いに係合し、第１カバー４２が閉位置にロックされる。また、次の工程でバスバ１１を電池３に固定するために、第２カバー４３は、仮係止手段（仮係止リブ５１及び仮係止斜面５２）によって、開いた状態に自立姿勢で仮係止される。即ち、仮係止リブ５１の先端が仮係止斜面５２に乗ることによって、第２カバー４３が開位置に自立姿勢で仮保持される。 At this time, the first locked portion 37 and the locked portion 47 are engaged with each other, the second locked portion 38 and the locked portion 48 are engaged with each other, and the first cover 42 is locked in the closed position. Further, in order to fix the bus bar 11 to the battery 3 in the next step, the second cover 43 is temporarily locked in an open state by a temporary locking means (temporary locking rib 51 and temporary locking slope 52) in a self-supporting posture. Locked. That is, when the tip of the temporary locking rib 51 rides on the temporary locking slope 52, the second cover 43 is temporarily held in the open position in an independent posture.

次に、この状態で、バスバ収容部２２の上面開口２２ａを通してバスバ１１を電池３の電極４Ａ、４Ｂにナットで固定する。この工程を終えたら、第２カバー４３を閉じ方向（図５中矢印Ｂ方向）へ回動操作する。そうすると、仮係止手段（仮係止リブ５１及び仮係止斜面５２）による仮係止状態が自動的に解除されて、第２カバー４３の閉じ方向への回動操作が可能になる。即ち、図４に示す状態で第２カバー４３を閉じ方向に回動操作すると、仮係止リブ５１の先端が仮係止斜面５２に沿って滑る。これにより、仮係止が解除されて、第２カバー４３の閉じ方向への回動操作が可能になる。 Next, in this state, the bus bar 11 is fixed to the electrodes 4A and 4B of the battery 3 with nuts through the upper surface opening 22a of the bus bar accommodating portion 22. After completing this step, the second cover 43 is rotated in the closing direction (in the direction of arrow B in FIG. 5). Then, the temporary locking state by the temporary locking means (temporary locking rib 51 and the temporary locking slope 52) is automatically released, and the second cover 43 can be rotated in the closing direction. That is, when the second cover 43 is rotated in the closing direction in the state shown in FIG. 4, the tip of the temporary locking rib 51 slides along the temporary locking slope 52. As a result, the temporary locking is released, and the second cover 43 can be rotated in the closing direction.

そして、第２カバー４３を閉じ方向に回動操作することにより、バスバ収容部２２の上面開口２２ａを第２カバー４３で覆うことができる。このとき、第３の被ロック部３９とロック部４９が互いに係合することにより、第２カバー４３が閉位置にロックされる。それにより、バスバ１１と電極４Ａ、４Ｂの固定部が絶縁保護されて感電等が防止される。 Then, by rotating the second cover 43 in the closing direction, the upper surface opening 22a of the bus bar accommodating portion 22 can be covered with the second cover 43. At this time, the second cover 43 is locked in the closed position by engaging the third locked portion 39 and the locked portion 49 with each other. As a result, the fixed portions of the bus bar 11 and the electrodes 4A and 4B are insulated and protected to prevent electric shock and the like.

このように、バスバモジュール１０の電池３へ組付時（バスバ１１の電池３への締結時）には、電線収容部２３を覆う第１カバー４２を閉じた状態にしておくことができる。そのため、樹脂ケース２０の幅を小さい状態にして、バスバモジュール１０を電池３に組み付けることができる。従って、樹脂ケース２０が電池３に干渉することによって、バスバモジュール１０の組付作業性が損なわれるようなことがない。 In this way, when the bus bar module 10 is assembled to the battery 3 (when the bus bar 11 is fastened to the battery 3), the first cover 42 that covers the electric wire accommodating portion 23 can be kept closed. Therefore, the bus module 10 can be assembled to the battery 3 with the width of the resin case 20 reduced. Therefore, the resin case 20 does not interfere with the battery 3 and the assembly workability of the bus module 10 is not impaired.

また、バスバモジュール１０の電池３へ組付時に、電線収容部２３を覆う第１カバー４２を閉じた状態にしながら、バスバ収容部２２を覆う第２カバー４３を自立姿勢で開いた状態に保っておくことができる。そのため、バスバ１１を電池３の電極４Ａ、４Ｂにナットで締結する組付作業を容易に進めることができる。 Further, when the bus bar module 10 is assembled to the battery 3, the first cover 42 covering the electric wire accommodating portion 23 is kept closed, while the second cover 43 covering the bus bar accommodating portion 22 is kept open in a self-supporting posture. Can be left. Therefore, the assembly work of fastening the bus bar 11 to the electrodes 4A and 4B of the battery 3 with nuts can be easily proceeded.

また、電線収容部２３を閉塞する第１カバー４２の先端に、バスバ収容部２２を閉塞する第２カバー４３を一体に設けている。そのため、バスバ収容部２２のカバーを樹脂ケースと別体で設ける場合（後述の比較例）に比べて、部品点数の削減によるコスト低減を図ることができる。 Further, a second cover 43 that closes the bus bar accommodating portion 22 is integrally provided at the tip of the first cover 42 that closes the electric wire accommodating portion 23. Therefore, as compared with the case where the cover of the bus bar accommodating portion 22 is provided separately from the resin case (comparative example described later), the cost can be reduced by reducing the number of parts.

また、第１カバー４２の先端にヒンジ（第２ヒンジ４６）を介して第２カバー４３を連結した構成にするだけであるので、構造が簡単であり、成形コストの低減が図れて、コスト低減に寄与することができる。 Further, since the second cover 43 is simply connected to the tip of the first cover 42 via a hinge (second hinge 46), the structure is simple, the molding cost can be reduced, and the cost is reduced. Can contribute to.

また、第１カバー４２と第２カバー４３が一枚の板体状のカバー４１として構成されているので、カバー４１を全開した状態で、カバー４１に邪魔されずに、バスバ１１に電気的に接続された電圧検出線１３の配索を行うことができる。 Further, since the first cover 42 and the second cover 43 are configured as one plate-shaped cover 41, the cover 41 is electrically opened to the bus bar 11 without being disturbed by the cover 41. The connected voltage detection line 13 can be arranged.

また、第２カバー４３を開位置に仮保持しておく仮係止手段が、仮係止リブ５１と仮係止斜面５２で構成されている。そのため、簡単な構成及び簡単な操作で、第２カバー４３の仮係止と仮係止の解除を行うことができ、コスト低減に寄与することができる。 Further, the temporary locking means for temporarily holding the second cover 43 in the open position is composed of the temporary locking rib 51 and the temporary locking slope 52. Therefore, the temporary locking and the temporary locking of the second cover 43 can be performed with a simple configuration and a simple operation, which can contribute to cost reduction.

次に比較例と比べて本実施形態の利点を述べる。なお、比較例を示す各図において、本実施形態と同一構成要素については同一符号を付して説明を省略する。 Next, the advantages of this embodiment as compared with the comparative example will be described. In each figure showing a comparative example, the same components as those in the present embodiment are designated by the same reference numerals and the description thereof will be omitted.

まず、図６〜図８を参照して、比較例として示すバスバモジュール１１０について説明する。
図６は、比較例の電源装置の部分分解斜視図、図７は、比較例の電源装置の部分外観斜視図、図８は、比較例のバスバモジュールの部分外観斜視図である。 First, the bus module 110 shown as a comparative example will be described with reference to FIGS. 6 to 8.
6 is a partially disassembled perspective view of the power supply device of the comparative example, FIG. 7 is a partial external perspective view of the power supply device of the comparative example, and FIG. 8 is a partial external perspective view of the bus bar module of the comparative example.

図６〜図８に示すように、この第１の比較例のバスバモジュール１１０の樹脂ケース１２０は、バスバ収容部１２２と、電線収容部１２３と、電線収容部カバー１４２と、ヒンジ１４５と、を一体に有している。しかし、バスバ収容部カバー１４３は、樹脂ケース１２０と別体に設けられている。このように、バスバ収容部１２２を覆うバスバ収容部カバー１４３が、樹脂ケース１２０と別体に設けられていると、それだけ部品点数が増えるので、コスト増になりやすい。 As shown in FIGS. 6 to 8, the resin case 120 of the bus bar module 110 of the first comparative example includes a bus bar accommodating portion 122, an electric wire accommodating portion 123, an electric wire accommodating portion cover 142, and a hinge 145. It has one. However, the bus bar accommodating portion cover 143 is provided separately from the resin case 120. As described above, if the bus bar accommodating portion cover 143 that covers the bass bar accommodating portion 122 is provided separately from the resin case 120, the number of parts increases by that amount, and the cost tends to increase.

それに対して、本実施形態の樹脂ケース２０は、図３に示すように、電線収容部２３を覆う第１カバー４２とバスバ収容部２２を覆う第２カバー４３とを樹脂ケース２０に一体に設けている。そのため、部品点数減によるコスト低減が図れる。 On the other hand, in the resin case 20 of the present embodiment, as shown in FIG. 3, a first cover 42 covering the electric wire accommodating portion 23 and a second cover 43 covering the bus bar accommodating portion 22 are integrally provided in the resin case 20. ing. Therefore, the cost can be reduced by reducing the number of parts.

次に、電線収容部を覆うカバーとバスバ収容部を覆うカバーとを共に樹脂ケースに一体に設けている比較例と比べた場合の本実施形態の利点を述べる。 Next, the advantages of the present embodiment will be described as compared with the comparative example in which the cover covering the electric wire accommodating portion and the cover covering the bus bar accommodating portion are both integrally provided in the resin case.

図９に示す第２の比較例に係る樹脂ケース３２０では、電線収容部２３とバスバ収容部２２を一緒に覆う大きさの板状のカバー３４１を、ヒンジ３４５を介してケース本体２１に連結している。但し、電線収容部２３とバスバ収容部２２を個別に閉塞できるようにするヒンジ（本実施形態における第２ヒンジ４６）は設けられていない。この比較例の樹脂ケース３２０では、電線収容部２３をカバーで閉じた状態で、バスバ収容部２２のカバーを開いた状態にすることはできない。従って、電圧検出線１３の配索作業とバスバ１１の固定作業を個別に進める上での課題がある。 In the resin case 320 according to the second comparative example shown in FIG. 9, a plate-shaped cover 341 having a size that covers the electric wire accommodating portion 23 and the bus bar accommodating portion 22 together is connected to the case main body 21 via a hinge 345. ing. However, a hinge (second hinge 46 in the present embodiment) that allows the electric wire accommodating portion 23 and the bus bar accommodating portion 22 to be individually closed is not provided. In the resin case 320 of this comparative example, the cover of the bus bar accommodating portion 22 cannot be opened while the electric wire accommodating portion 23 is closed by the cover. Therefore, there is a problem in individually proceeding with the wiring work of the voltage detection line 13 and the fixing work of the bus bar 11.

それに対して、本実施形態の樹脂ケース２０は、図３に示すように、電線収容部２３を覆う第１カバー４２とバスバ収容部２２を覆う第２カバー４３とを第２ヒンジ４６で回動可能に連結している。従って、電線収容部２３を第１カバー４２で閉じた状態で、バスバ収容部２２の第２カバー４３を開いた状態にすることができる。そのため、電圧検出線１３の配索作業とバスバ１１の固定作業を個別に進めやすくなる。 On the other hand, in the resin case 20 of the present embodiment, as shown in FIG. 3, the first cover 42 covering the electric wire accommodating portion 23 and the second cover 43 covering the bus bar accommodating portion 22 are rotated by the second hinge 46. It is connected as possible. Therefore, the second cover 43 of the bus bar accommodating portion 22 can be opened while the electric wire accommodating portion 23 is closed by the first cover 42. Therefore, it becomes easy to individually proceed with the work of arranging the voltage detection line 13 and the work of fixing the bus bar 11.

なお、この第２の比較例において、カバー３４１の中間にヒンジ（本実施形態の第２ヒンジ４６に相当）を設けることで、電線収容部２３をカバーで閉じた状態にしながら、バスバ収容部２２を開いた状態にすることは可能である。しかし、単純にヒンジ（本実施形態の第２ヒンジ４６に相当）を追加するだけでは、カバー３４１のバスバ収容部２２を覆う部分が不安定にならざるを得ない。従って、バスバモジュールの固定作業の際に、バスバ収容部２２を覆うカバー部分を開いておく余分な手間がかかる。 In this second comparative example, by providing a hinge (corresponding to the second hinge 46 of the present embodiment) in the middle of the cover 341, the electric wire accommodating portion 23 is closed by the cover, and the bus bar accommodating portion 22 is provided. It is possible to keep the open. However, simply adding a hinge (corresponding to the second hinge 46 of the present embodiment) inevitably makes the portion of the cover 341 that covers the bus bar accommodating portion 22 unstable. Therefore, when fixing the bus bar module, it takes extra time to open the cover portion that covers the bus bar accommodating portion 22.

それに対して、本実施形態の樹脂ケース２０は、図４に示すように、電線収容部２３を覆う第１カバー４２を閉じた状態にしながら、バスバ収容部２２を覆う第２カバー４３を開いた状態に自立姿勢で仮保持できる。従って、バスバモジュールの固定作業の際に、バスバ収容部２２を覆う第２カバー４３を手等で開いておく余分な手間がかからない。 On the other hand, in the resin case 20 of the present embodiment, as shown in FIG. 4, the second cover 43 covering the bus bar accommodating portion 22 is opened while the first cover 42 covering the electric wire accommodating portion 23 is closed. Can be temporarily held in an independent position. Therefore, when fixing the bus bar module, it is not necessary to manually open the second cover 43 that covers the bus bar accommodating portion 22.

図１０に示す第３の比較例に係る樹脂ケース４２０では、電線収容部２３とバスバ収容部２２を別々に独立して覆うことのできるカバー４４２、４４３をヒンジ４４５、４４６でケース本体２１に個別に連結している。この比較例では、２つのカバー４４２、４４３を、電線収容部２３とバスバ収容部２２の互いに一番離れた側壁３６、３２にヒンジ４４５、４４６で連結し、互いに反対方向に回動することにより開閉できるようにしている。 In the resin case 420 according to the third comparative example shown in FIG. 10, the covers 442 and 443 that can independently cover the electric wire accommodating portion 23 and the bus bar accommodating portion 22 are individually attached to the case main body 21 by hinges 445 and 446. It is connected to. In this comparative example, the two covers 442 and 443 are connected to the side walls 36 and 32 of the electric wire accommodating portion 23 and the bus bar accommodating portion 22 which are farthest from each other by hinges 445 and 446, and rotate in opposite directions. It can be opened and closed.

この比較例では、電線収容部２３をカバーで閉じた状態にしながら、バスバ収容部２２を開いた状態にすることができる。よって、その点では本実施形態と共通の利点が得られる。しかし、バスバ収容部２２のカバー４４３と電線収容部２３のカバー４４２を互いに反対方向に回動させる構造であるから、作業スペースを確保する上で課題があると共に、成形時の金型コストがかかりやすい。 In this comparative example, the bus bar accommodating portion 22 can be opened while the electric wire accommodating portion 23 is closed by the cover. Therefore, in that respect, advantages common to those of the present embodiment can be obtained. However, since the cover 443 of the bus bar accommodating portion 22 and the cover 442 of the electric wire accommodating portion 23 are rotated in opposite directions, there is a problem in securing a work space and a mold cost at the time of molding is required. Cheap.

図１１に示す第４の比較例に係る樹脂ケース５２０では、電線収容部２３とバスバ収容部２２を別々に独立して覆うことのできるカバー５４２、５４３をヒンジ５４５、５４６でケース本体２１に個別に連結している。但し、この比較例では、電線収容部２３のカバー５４２は、電線収容部２３のバスバ収容部２２とは反対側の側壁３６の上端にヒンジ５４５で連結している。また、バスバ収容部２２のカバー５４３は、バスバ収容部２２の電線収容部２３側の側壁３３の上端にヒンジ５４６で連結している。従って、同じ方向に回動することで、両方のカバー５４２、５４３を開閉することができる。 In the resin case 520 according to the fourth comparative example shown in FIG. 11, the covers 542 and 543 that can independently cover the electric wire accommodating portion 23 and the bus bar accommodating portion 22 are individually attached to the case main body 21 by hinges 545 and 546. It is connected to. However, in this comparative example, the cover 542 of the electric wire accommodating portion 23 is connected to the upper end of the side wall 36 on the side opposite to the bus bar accommodating portion 22 of the electric wire accommodating portion 23 by a hinge 545. Further, the cover 543 of the bus bar accommodating portion 22 is connected to the upper end of the side wall 33 on the electric wire accommodating portion 23 side of the bus bar accommodating portion 22 by a hinge 546. Therefore, both covers 542 and 543 can be opened and closed by rotating in the same direction.

この比較例でも、電線収容部２３をカバーで閉じた状態にしながら、バスバ収容部２２を開いた状態にすることができる。よって、その点では本実施形態と共通の利点が得られる。また、バスバ収容部２２のカバー５４３と電線収容部２３のカバー５４２を同じ方向に回動させる構造であるから、作業スペースを確保する上での問題も解消される。但し、成形時の金型コストがかかりやすい問題がある。 Also in this comparative example, the bus bar accommodating portion 22 can be kept open while the electric wire accommodating portion 23 is closed by the cover. Therefore, in that respect, advantages common to those of the present embodiment can be obtained. Further, since the cover 543 of the bus bar accommodating portion 22 and the cover 542 of the electric wire accommodating portion 23 are rotated in the same direction, the problem of securing a work space is solved. However, there is a problem that the mold cost at the time of molding tends to be high.

また、バスバ収容部２２と電線収容部２３の隣接する側壁３３、３５同士を繋ぐ連結部２４には、電圧検出端子１２の電線取付部１２ｂを上方から挿入する溝部がある。そのため、側壁３３にヒンジ５４６を介してカバー５４３が結合されていると、溝部に電圧検出端子１２の電線取付部１２ｂを上方から挿入できなくなる可能性がある。従って、この比較例のように構成することは、組付作業を行う上で、別の問題を生じる可能性があり、好ましくない。 Further, the connecting portion 24 connecting the adjacent side walls 33 and 35 of the bus bar accommodating portion 22 and the electric wire accommodating portion 23 has a groove portion into which the electric wire mounting portion 12b of the voltage detection terminal 12 is inserted from above. Therefore, if the cover 543 is connected to the side wall 33 via the hinge 546, the electric wire mounting portion 12b of the voltage detection terminal 12 may not be inserted into the groove from above. Therefore, the configuration as in this comparative example is not preferable because it may cause another problem in performing the assembly work.

その点、本実施形態の樹脂ケース２０では、電圧検出線１３の配索時には、電線収容部２３及びバスバ収容部２２の上方を開放しておくことができるので、組付を行う上での上述の問題は起こらない。 In that respect, in the resin case 20 of the present embodiment, the upper parts of the electric wire accommodating portion 23 and the bus bar accommodating portion 22 can be left open at the time of arranging the voltage detection line 13, and therefore, as described above for assembling. Problem does not occur.

以上説明したように、本実施形態によれば、部品点数減によるコストの削減を図りながら、組付性の良さを発揮することができる。 As described above, according to the present embodiment, it is possible to exhibit good assembling property while reducing the cost by reducing the number of parts.

ここで、上述した本発明に係るバスバモジュールの樹脂ケース、バスバモジュール、及び電源装置の実施形態の特徴をそれぞれ以下［１］〜［４］に簡潔に纏めて列記する。
［１］
上面開口（２２ａ）を有し、内部に、電池集合体（２）の隣接する電池（３）の電極（４Ａ、４Ｂ）間を接続するバスバ１１が収容されるバスバ収容部２２と、
上面開口（２３ａ）を有し、前記バスバ収容部（２２）に隣接配置されて結合され、内部に、前記バスバ（１１）にそれぞれ電気的に接続される電線（電圧検出線１３）が収容される電線収容部（２３）と、
前記電線収容部（２３）の前記バスバ収容部（２２）と反対側の部分に第１ヒンジ（４５）により回動可能に結合され、閉方向の回動操作により前記電線収容部（２３）の上面開口（２３ａ）を閉塞する第１カバー（４２）と、
前記第１カバー（４２）の前記第１ヒンジ（４５）と反対側の先端縁に第２ヒンジ（４６）により回動可能に結合され、前記第１カバー（４２）が閉位置にある状態で閉方向に回動操作されることにより、前記バスバ収容部（２２）の上面開口（２２ａ）を閉塞する第２カバー（４３）と、
前記第１カバー（４２）が閉位置にある状態で前記第２カバー（４３）を開位置に自立姿勢で仮係止し、その状態で前記第２カバー（４３）が閉方向に回動操作されることにより仮係止を解除する仮係止手段（仮係止リブ５１及び仮係止斜面５２）と、
前記第１カバー（４２）及び前記第２カバー（４３）を閉位置にロックするロック手段（被ロック部３７、３８、３９及びロック部４７、４８、４９）と、
を一体の樹脂成形品として備える、
ことを特徴とするバスバモジュールの樹脂ケース（２０）。
［２］
上記［１］に記載のバスバモジュールの樹脂ケース（２０）であって、
前記仮係止手段は、
前記第２カバー（４３）に突設された可撓性の仮係止リブ（５１）と、
前記バスバ収容部（２２）に設けられ、前記第１カバー（４２）が閉位置にある状態で前記仮係止リブ（５１）の先端が乗ることにより前記第２カバー（４３）を開位置に自立姿勢で仮係止し、その状態で前記第２カバー（４３）が閉方向に回動操作されることにより、前記仮係止リブ（５１）の先端を滑らせて前記仮係止状態を解除し、前記第２カバー（４３）の閉方向の回動を許容する仮係止斜面（５２）と、
を含む、
ことを特徴とするバスバモジュールの樹脂ケース（２０）。
［３］
直線的に配列された複数の電池（３）よりなる電池集合体（２）の前記電池（３）が直列接続されるように、隣接する前記電池（３）の正極（４Ａ）と負極（４Ｂ）との間を電気的に接続する複数のバスバ（１１）と、
前記各バスバ（１１）を介してそれぞれ前記正極（４Ａ）または負極（４Ｂ）に電気的に接続される複数の電圧検出線（１３）と、
少なくとも１つの前記バスバ（１１）と前記複数の電圧検出線（１３）を収容する樹脂ケース（２０）と、
を備え、
前記樹脂ケース（２０）として上記［１］または［２］に記載の樹脂ケース（２０）が用いられており、
前記樹脂ケース（２０）の前記バスバ収容部（２２）に前記バスバ（１１）が収容され、
前記樹脂ケース（２０）の前記電線収容部（２３）に前記複数の電圧検出線（１３）が収容されている、
ことを特徴とするバスバモジュール（１０）。
［４］
直線的に配列された複数の電池（３）で構成された電池集合体（２）と、
前記電池集合体（２）に重ねて取り付けられると共に前記各電池（３）を互いに電気的に接続するバスバモジュール（１０）と、
を備える電源装置（１）において、
前記バスバモジュール（１０）として、上記［３］に記載のバスバモジュールを有している、
ことを特徴とする電源装置（１）。 Here, the features of the resin case of the bus module according to the present invention, the bus module, and the embodiment of the power supply device described above are briefly summarized and listed below in [1] to [4], respectively.
[1]
A bus bar accommodating portion 22 having an upper surface opening (22a) and accommodating a bus bar 11 that connects the electrodes (4A, 4B) of adjacent batteries (3) of the battery assembly (2) inside.
It has an upper surface opening (23a), is arranged adjacent to the bus bar accommodating portion (22) and is coupled, and internally, an electric wire (voltage detection line 13) electrically connected to the bus bar (11) is accommodated. Electric wire accommodating part (23) and
The electric wire accommodating portion (23) is rotatably coupled to a portion of the electric wire accommodating portion (23) opposite to the bus bar accommodating portion (22) by a first hinge (45), and the electric wire accommodating portion (23) is rotatably connected by a rotation operation in the closing direction. The first cover (42) that closes the upper surface opening (23a) and
The first cover (42) is rotatably coupled to the tip edge opposite to the first hinge (45) by the second hinge (46), and the first cover (42) is in the closed position. A second cover (43) that closes the upper surface opening (22a) of the bus bar accommodating portion (22) by being rotated in the closing direction.
With the first cover (42) in the closed position, the second cover (43) is temporarily locked in the open position in an independent posture, and in that state, the second cover (43) is rotated in the closed direction. Temporary locking means (temporary locking rib 51 and temporary locking slope 52) for releasing the temporary locking, and
Locking means (locked portions 37, 38, 39 and locking portions 47, 48, 49) for locking the first cover (42) and the second cover (43) in a closed position,
As an integrated resin molded product,
The resin case (20) of the bus module, which is characterized in that.
[2]
The resin case (20) of the bus module according to the above [1].
The temporary locking means is
A flexible temporary locking rib (51) projecting from the second cover (43) and
The second cover (43) is set to the open position by the tip of the temporary locking rib (51) provided in the bus bar accommodating portion (22) and the first cover (42) is in the closed position. Temporarily locks in a self-supporting posture, and in that state, the second cover (43) is rotated in the closing direction, so that the tip of the temporary lock rib (51) is slid to bring the temporary lock state. A temporary locking slope (52) that is released and allows the second cover (43) to rotate in the closing direction, and
including,
The resin case (20) of the bus module, which is characterized in that.
[3]
The positive electrode (4A) and the negative electrode (4B) of the adjacent batteries (3) are connected in series so that the batteries (3) of the battery assembly (2) composed of a plurality of batteries (3) arranged linearly are connected in series. ), And a plurality of buses (11) that electrically connect to each other.
A plurality of voltage detection lines (13) electrically connected to the positive electrode (4A) or the negative electrode (4B) via the respective bus bars (11), respectively.
A resin case (20) accommodating at least one bus bar (11) and the plurality of voltage detection lines (13), and a resin case (20).
With
The resin case (20) according to the above [1] or [2] is used as the resin case (20).
The bus bar (11) is housed in the bus bar accommodating portion (22) of the resin case (20).
The plurality of voltage detection lines (13) are housed in the electric wire accommodating portion (23) of the resin case (20).
A bus module (10) characterized by the above.
[4]
A battery assembly (2) composed of a plurality of batteries (3) arranged linearly, and
A bus module (10) that is mounted on the battery assembly (2) and electrically connects the batteries (3) to each other.
In the power supply device (1) provided with
As the bus module (10), the bus module according to the above [3] is provided.
A power supply unit (1).

１電源装置
２電池集合体
３電池
４Ａ正極（電極）
４Ｂ負極（電極）
１０バスバモジュール
１１バスバ
１３電圧検出線
２０樹脂ケース
２２バスバ収容部
２２ａ上面開口
２３電線収容部
２３ａ上面開口
３７，３８，３９被ロック部（ロック手段）
４２第１カバー
４３第２カバー
４５第１ヒンジ
４６第２ヒンジ
４７，４８，４９ロック部（ロック手段）
５１仮係止リブ（仮係止手段）
５２仮係止斜面（仮係止手段） 1 Power supply 2 Battery assembly 3 Battery 4A Positive electrode (electrode)
4B Negative electrode (electrode)
10 Bus bar module 11 Bus bar 13 Voltage detection line 20 Resin case 22 Bus bar accommodating part 22a Top opening 23 Wire accommodating part 23a Top opening 37, 38, 39 Locked part (locking means)
42 1st cover 43 2nd cover 45 1st hinge 46 2nd hinge 47, 48, 49 Lock part (locking means)
51 Temporary locking rib (temporary locking means)
52 Temporary locking slope (temporary locking means)

Claims

A bus bar accommodating portion having a top opening and accommodating a bus bar that connects electrodes of adjacent batteries of a battery assembly inside.
An electric wire accommodating portion having an upper surface opening, adjacent to and coupled to the bus bar accommodating portion, and internally accommodating electric wires electrically connected to the bus bar.
A first cover that is rotatably coupled to a portion of the electric wire accommodating portion opposite to the bus bar accommodating portion by a first hinge and closes the upper surface opening of the electric wire accommodating portion by a rotation operation in the closing direction.
The first cover is rotatably coupled to the tip edge opposite to the first hinge by a second hinge, and is rotated in the closing direction while the first cover is in the closed position. A second cover that closes the upper opening of the bus bar housing,
With the first cover in the closed position, the second cover is temporarily locked in an open position in which it rises upward from the second hinge in an independent posture, and in that state, the second cover rotates in the closing direction. Temporary locking means that releases the temporary locking by being operated, and
A locking means for locking the first cover and the second cover in a closed position,
As an integrated resin molded product,
The resin case of the bus module that is characterized by this.

A bus bar accommodating portion having a top opening and accommodating a bus bar that connects electrodes of adjacent batteries of a battery assembly inside.
An electric wire accommodating portion having an upper surface opening, adjacent to and coupled to the bus bar accommodating portion, and internally accommodating electric wires electrically connected to the bus bar.
A first cover that is rotatably coupled to a portion of the electric wire accommodating portion opposite to the bus bar accommodating portion by a first hinge and closes the upper surface opening of the electric wire accommodating portion by a rotation operation in the closing direction.
The first cover is rotatably coupled to the tip edge opposite to the first hinge by a second hinge, and is rotated in the closing direction while the first cover is in the closed position. A second cover that closes the upper opening of the bus bar housing,
With the first cover in the closed position, the second cover is temporarily locked in the open position in an independent posture, and in that state, the second cover is rotated in the closing direction to release the temporary lock. Temporary locking means and
A locking means for locking the first cover and the second cover in a closed position,
As an integrated resin molded product,
The temporary locking means is
A flexible temporary locking rib projecting from the second cover,
Wherein provided in the bus bar accommodating portion, sealed and tentatively retaining freestanding position said second cover to said open position by said first cover ride the tip of the temporary engaging rib in the closed position, in that state When the second cover is rotated in the closing direction, the tip of the temporary locking rib is slid to release the temporary locking state, and the temporary locking rib is allowed to rotate in the closing direction. Locking slope and
including,
The resin case of the bus module that is characterized by this.

A plurality of buses that electrically connect between the positive electrode and the negative electrode of the adjacent batteries so that the batteries of the battery assembly consisting of a plurality of linearly arranged batteries are connected in series.
A plurality of voltage detection lines electrically connected to the positive electrode or the negative electrode via the respective bus bars, and
A resin case accommodating at least one bus bar and the plurality of voltage detection lines, and
With
The resin case according to claim 1 or 2 is used as the resin case.
The bus bar is housed in the bus bar accommodating portion of the resin case.
The plurality of voltage detection lines are housed in the wire accommodating portion of the resin case.
A bus module that features that.

A battery assembly composed of a plurality of linearly arranged batteries,
A bus module that is mounted on top of the battery assembly and electrically connects the batteries to each other.
In a power supply equipped with
The bus module according to claim 3 is provided as the bus module.
A power supply that is characterized by that.