JP6757239B2 - In-vehicle power supply - Google Patents

Description

The present disclosure relates to an in-vehicle power supply device.

As a power supply device of this type, as seen in Patent Document 1 below, a power supply device including a storage case for housing a battery unit in a storage space formed by an upper case body and a lower case is known. On the side surface of the storage case, connectors and terminals that can be connected to external devices are provided side by side.

The power supply installed inside the vehicle interior is less likely to allow water to enter the inside of the power supply unit than the power supply installed outside the vehicle interior. However, there is a risk that people in the vehicle spill water, drinks, etc., or rainwater may infiltrate through the vehicle door, causing water to splash on the power supply. For this reason, it is necessary to take measures against water damage to the power supply device installed in the vehicle interior.

Therefore, the power supply device described in Patent Document 1 below includes a terminal cover attached to the outside of a side surface portion provided with a connector and a terminal in the storage case. The terminal cover covers the connector and the terminal from above. Further, a ridge portion extending along the side surface portion is provided on a portion of the upper surface of the upper case body constituting the power supply device facing the terminal cover. As a result, when water falls from above with respect to the upper case body, even if the water flows along the upper surface of the upper case body and the water invades the inside of the terminal cover, the infiltrated water rushes. It is received by the club. The received water is guided by the ridge portion to the portion where the connector and the terminal are not provided, and then discharged to the outside of the storage case. As a result, it is possible to prevent water from splashing on the connector and the terminal.

Japanese Unexamined Patent Publication No. 2014-32896

The ridge portion is continuously provided on the upper surface of the upper case body along the side surface portion from the connector installation portion to the terminal installation portion. Therefore, for example, when water is received by the ridge portion corresponding to the intermediate portion between the connector installation portion and the terminal installation portion, the drainage route until the received water is discharged to the outside of the storage case is long. Can be. Further, if the drainage route is long, water may remain in the middle of the drainage route. As described above, when the drainage route is long, the drainage performance may be deteriorated.

A main object of the present disclosure is to provide an in-vehicle power supply device capable of enhancing drainage performance.

The configuration of the present disclosure is an in-vehicle power supply device (10) mounted in a vehicle interior, which includes a battery unit (20), an upper case body (50), and a lower case body (40). A storage case (60) for accommodating the battery portion in the accommodation space formed by the body and the lower case, and an external device provided on the side surface portion so as to line up along the side surface portion of the storage case. The first terminal portion (100) and the second terminal portion (201, 202) to which the above can be connected, and the terminal side surface portion (the terminal side surface portion) which is the side surface portion where the first terminal portion and the second terminal portion are provided in the storage case. It is attached to the outside of 51a to 51c and 52a to 52c), and includes a terminal cover (70) that covers the first terminal portion and the second terminal portion. Of the upper surface of the upper case body, the outer edge portion on the side surface portion side of the terminal and at least the portion corresponding to the first terminal portion in the direction (DD) in which the first terminal portion and the second terminal portion are lined up. A first drainage groove (53; 83; 93, 93a) is formed so as to extend along the terminal side surface portion, and is an outer edge portion of the upper surface of the upper case body on the terminal side surface portion side. At least in the direction in which the first terminal portion and the second terminal portion are lined up, at least the portion corresponding to the second terminal portion has a second drainage different from the first drainage groove so as to extend along the side surface portion of the terminal. Grooves (54; 84; 94, 94a) are formed, and at least one end of both ends of the first drainage groove in the direction in which the first drainage groove extends is the first than the installation portion of the second terminal portion. Both ends of the second drainage groove extend to the side surface portions (51b, 51c) of the storage case on the side of one terminal portion and not provided with the first terminal portion, and in the direction in which the second drainage groove extends. At least one end of the storage case extends to the side surface portion (52b, 52c) of the storage case which is closer to the second terminal portion than the installation portion of the first terminal portion and is not provided with the second terminal portion. There is.

In the above configuration, the first terminal portion and the second terminal portion are provided so as to be arranged in a direction along the side surface portion of the storage case. In the above configuration, the side surface portion where the first terminal portion and the second terminal portion are provided in the accommodation case is the terminal side surface portion.

In the above configuration, the terminal side surface is located on the upper surface side of the upper case body, which is the outer edge portion on the terminal side surface portion side and at least corresponds to the first terminal portion in the direction in which the first terminal portion and the second terminal portion are lined up. A first drainage ditch is formed so as to extend along the portion. Further, on the upper surface of the upper case body, at least the portion corresponding to the second terminal portion in the direction in which the first terminal portion and the second terminal portion are arranged, which is the outer edge portion on the terminal side surface portion side, is along the terminal side surface portion. A second drainage ditch separate from the first drainage ditch is formed so as to extend.

In this configuration, consider a case where the water flowing along the upper surface of the upper case body invades the inside of the terminal cover and the invaded water flows into the first drainage groove. At least one end of both ends of the first drainage groove extends to the side surface portion of the storage case that is closer to the first terminal portion than the installation portion of the second terminal portion and is not provided with the first terminal portion. Therefore, the water that has flowed into the first drainage ditch is not guided to the portion corresponding to the second terminal portion on the upper surface of the upper case body, but is guided to the vicinity of the installation portion of the first terminal portion on the side surface portion of the storage case. Then, it is discharged to the outside of the storage case. Thereby, for example, the length of the drainage path can be shortened and the drainage performance of the power supply device can be improved as compared with the drainage path using the ridge portion described in Patent Document 1.

On the other hand, in the above configuration, consider a case where the water flowing along the upper surface of the upper case body invades the inside of the terminal cover and the invaded water flows into the second drainage groove. At least one end of both ends of the second drainage groove extends to the side surface portion of the storage case that is closer to the second terminal portion than the installation portion of the first terminal portion and is not provided with the second terminal portion. Therefore, the water that has flowed into the second drainage ditch is not guided to the portion corresponding to the first terminal portion on the upper surface of the upper case body, but is guided to the vicinity of the installation portion of the second terminal portion on the side surface portion of the storage case. Then, it is discharged to the outside of the storage case. Thereby, for example, the length of the drainage path can be shortened and the drainage performance of the power supply device can be improved as compared with the drainage path using the ridge portion described in Patent Document 1.

Perspective view of the power supply. A perspective view of the power supply with the terminal cover removed. An exploded perspective view showing each part constituting the power supply device in an exploded manner. Top view of the power supply with the terminal cover removed. The perspective view of the power supply device which removed the terminal cover and the upper case body. A perspective view of the lower case body. Side view of the power supply with the terminal cover removed. Perspective view of the terminal cover. Perspective view of the terminal cover. Bottom view of the terminal cover. FIG. 4 is a cross-sectional view taken along the line XI-XI of the power supply device of FIG. Partial cross-sectional view of a power supply with a terminal cover attached. FIG. 4 is a partial sectional view taken along line XIII-XIII of the power supply device of FIG. FIG. 3 is a partial sectional view of a power supply device according to another embodiment. FIG. 3 is a partial sectional view of a power supply device according to another embodiment. The plan view of the power supply device which removed the terminal cover which concerns on other embodiments. The plan view of the power supply device which removed the terminal cover which concerns on other embodiments.

Hereinafter, an embodiment embodying the in-vehicle power supply device according to the present disclosure will be described with reference to the drawings. In the present embodiment, the power supply device is mounted at a predetermined position in the vehicle interior. Specifically, for example, the power supply is mounted under the seat of the vehicle. The vehicle includes an engine that is an internal combustion engine, an in-vehicle ECU that controls the engine and other parts, a generator that is driven by the engine to generate electricity, and a storage unit such as a lead storage battery that is charged by the generated power of the generator. ing.

First, the overall configuration of the power supply device 10 will be described with reference to FIGS. 1 to 5. In the following description, for convenience, the vertical direction of the power supply device 10 is defined with reference to FIG. 1 in which the power supply device 10 is installed on a horizontal surface in the vehicle interior. Each figure shows HD in the height direction, WD in the width direction, and DD in the depth direction in the vertical direction.

The power supply device 10 includes a battery module 20 as a battery unit having a plurality of single batteries, a single substrate 30 on which electronic components for controlling charging / discharging of the battery module 20 and the like are mounted, and a lower case body 40. And a storage case 60 having an upper case body 50. A plurality of cells are connected in series to form an assembled battery. In this embodiment, a lithium ion storage battery is used as the battery cell. As shown in FIG. 2, each of the battery module 20 and the substrate 30 is fixed to the lower case body 40. By assembling the upper case body 50 from above to the integral assembly component shown in FIG. 2, the power supply device 10 shown in FIG. 2 is obtained. As a result, the battery module 20 and the substrate 30 are housed in the storage space formed by the lower case body 40 and the upper case body 50.

The power supply device 10 includes a terminal block 100, a first connector 201, and a second connector 202 that are electrically connected to a device or the like outside the device. The terminal block 100 includes a first external terminal 101 and a second external terminal 102. In the present embodiment, the ISG, which is a generator with a motor function, is electrically connected to the first external terminal 101 via the first electric wiring 301. The ISG generates electricity by the power transmitted from the output shaft of the in-vehicle engine. At least a part of the generated power of ISG is supplied to the battery module 20. As a result, the battery module is charged. The ISG is supplied with electric power from the power supply device 10 via the first electric wiring 301. As a result, the ISG functions as a motor and functions as a power source together with the engine. The first electric load mounted on the vehicle is electrically connected to the second external terminal 102 via the second electric wiring 302. In the present embodiment, the first electric load includes a lead-acid battery, which is a battery, and a starter that imparts initial rotation to the output shaft of the engine.

A second electric load mounted on the vehicle is electrically connected to the first connector 201. In the present embodiment, the second electric load is an electric load excluding the battery and the starter, and includes at least one of an audio device and a navigation device. An in-vehicle ECU is electrically connected to the second connector 202.

The power supply device 10 includes a terminal cover 70 that covers the terminal block 100, the first connector 201, and the second connector 202 from above them. As shown in FIG. 2, the terminal block 100, the first connector 201, and the second connector 202 are provided in a state of being exposed to the outside of the power supply device 10 with the terminal cover 70 removed from the power supply device 10.

Next, the configuration of each part of the power supply device 10 will be described in detail.

<Lower case body 40 of the storage case 60>
As shown in FIGS. 3 and 6, the lower case body 40 is formed of a metal material such as aluminum. The lower case body 40 includes a first bottom portion 41 and a second bottom portion 42. The first bottom portion 41 has a substantially L-shape, and the second bottom portion 42 has a substantially square shape. The first bottom portion 41 and the second bottom portion 42 form the bottom surface of the lower case body 40. The first bottom portion 41 and the second bottom portion 42 are parallel to each other. A part of the first bottom portion 41 is a battery installation portion 41a on which the battery module 20 is placed. The second bottom portion 42 is provided at a height position higher than that of the first bottom portion 41.

The lower case body 40 has a first wall portion 43a that is provided upright from the peripheral edge portion of the first bottom portion 41 or the vicinity of the peripheral edge portion thereof, and a second wall portion 43b that is provided upright from the peripheral edge portion of the second bottom portion 42. And have. The first wall portion 43a is formed so as to surround the peripheral edge portion of the first bottom portion 41 or the vicinity of the peripheral edge portion thereof. The second wall portion 43b is formed so as to surround the peripheral edge portion of the second bottom portion 42 or the vicinity of the peripheral edge portion thereof. In the first bottom portion 41, a substantial wall height is defined by the first wall portion 43a, and the upper end portion of the first wall portion 43a is the wall upper end portion.

The battery module 20 is fixed by a screw to a screw hole formed at the upper end of a portion of the first wall portion 43a that surrounds the battery installation portion 41a. As a result, the battery module 20 is fixed to the lower case body 40. The substantially lower half of the battery module 20 is surrounded by the first wall portion 43a, and the substantially upper half thereof projects upward from the upper end portion of the first wall portion 43a.

A plurality of substrate fixing portions 44 extending upward from each upper end portion are provided at the upper ends of the first wall portion 43a and the second wall portion 43b. Screw holes are formed in each substrate fixing portion 44. In a state where the substrate 30 is assembled to the lower case body 40 from above, the substrate 30 is fixed to the substrate fixing portion 44 by the screws Nb for fixing the substrate. The substrate 30 is also fixed to the upper surface of the heat radiating portion which extends upward from the upper surface of the second bottom portion 42 and has a substantially rectangular shape by a fixing member such as a screw.

A cover fixing portion 45 for fixing the upper case body 50 to the lower case body 40 is formed at the upper ends of the first wall portion 43a and the second wall portion 43b. A screw hole is formed in each cover fixing portion 45. In a state where the upper case body 50 is assembled from the upper side to the lower case body 40, the upper case body 50 is fixed to the cover fixing portion 45 by the screws Nc for fixing the upper case body 50. Note that FIG. 6 shows an example in which six cover fixing portions 45 are provided.

The lower case body 40 includes a first extending portion 46 and a second extending portion 47. The first extending portion 46 is a portion extending outward from the outer edge portion of the first bottom portion 41, and the second extending portion 47 is a portion extending outward from the outer edge portion of the second bottom portion 42. The first extending portion 46 is arranged to face the second extending portion 47 in the depth direction DD with a space thereof. A terminal block 100 is provided on the upper surface of the first extending portion 46. A first connector 201 is provided on the upper surface of the second extending portion 47.

In this embodiment, the first bottom portion 41, the second bottom portion 42, the first wall portion 43a, the second wall portion 43b, the substrate fixing portion 44, the cover fixing portion 45, the first extension portion 46, and the second extension portion 47 is integrally molded by die casting.

<Electrical configuration>
As shown in FIGS. 3 and 5, the substrate 30 is a printed circuit board having a substantially L-shape. Various electronic components 31 are mounted on the first surface of the substrate 30, and the second connector 202 is fixed to the first surface. The second connector 202 is fixed to the outer edge of the substrate 30. Electronic components include switch elements such as MOSFETs and microcomputers. The microcomputer executes charge / discharge control processing of the battery module 20 by turning on / off the switch element.

The power supply device 10 includes a bus bar unit 32. The bus bar unit 32 includes a conductive member for electrically connecting the first external terminal 101, the second external terminal 102, the first connector 201, the battery module 20, and the substrate 30.

As shown in FIG. 2, the terminal block 100, the first connector 201, and the second connector 202 are provided side by side in the depth direction DD of the power supply device 10. In other words, the terminal block 100, the first connector 201, and the second connector 202 are provided on the side surface portion of the accommodation case 60 so as to be orthogonal to the side wall surface of the side surface portion and in a direction along the side wall surface. Has been done. In this embodiment, the terminal block 100 corresponds to the "first terminal section", and the first connector 201 and the second connector 202 correspond to the "second terminal section".

<Upper case body 50 of the storage case 60>
In the present embodiment, the upper case body 50 is made of a synthetic resin material. In the upper case body 50, the upper part of the battery module 20 projects to the outside of the HD in the height direction to form the battery side top plate portion 50a. In the upper case body 50, the first connector 201 and the second connector 202 side are the substrate side top plate portion 50b in the depth direction DD. The height position of the battery-side top plate portion 50a is higher than the height position of the substrate-side top plate portion 50b. The battery-side top plate portion 50a and the substrate-side top plate portion 50b are connected by an inclined top plate portion 50c.

In the upper case body 50, the outer edge portion on the terminal block 100 side projects outward in the width direction WD to form the first overhanging portion 51. In the upper case body 50, the outer edge portions on the side of the first connector 201 and the second connector 202 project to the outside of the WD in the width direction to form the second overhanging portion 52. Of the first overhanging portion 51, the side surface portion on which the terminal block 100 is provided is the first terminal side surface portion 51a, and of the second overhanging portion 52, the first connector 201 and the second connector 202 are provided. The side surface portion is a second terminal side surface portion 52a. Of the first overhanging portion 51, a portion facing the second overhanging portion 52 with a space in the depth direction DD is referred to as a first inner side wall portion 51b. Of the second overhanging portion 52, a portion facing the first inner side wall portion 51b with a space in the depth direction DD is referred to as a second inner side wall portion 52b.

Of the first overhanging portion 51, the side surface portion on the side opposite to the first inner side wall portion 51b in the depth direction DD is the first outer wall portion 51c. Of the second overhanging portion 52, the side surface portion on the side opposite to the second inner side wall portion 52b in the depth direction DD is the second outer wall portion 52c.

A first wallless portion 51d through which a bus bar unit 32 electrically connected to the terminal block 100 and the battery module 20 passes is formed on the first terminal side surface portion 51a. A second wallless portion 52d for exposing the second connector 202 to the outside is formed on the second terminal side surface portion 52a.

A first drainage groove 53 is formed on the upper surface of the first overhanging portion 51 so as to extend along the depth direction DD. In other words, on the upper surface of the first overhanging portion 51, the first drainage groove 53 is orthogonal to the wall height direction of the first terminal side surface portion 51a and along the direction along the wall surface of the first terminal side surface portion 51a. Is formed. Of the pair of outer edges on the upper surface of the first overhanging portion 51 in the depth direction DD, the outer edge on the first outer wall portion 51c side is the first outer outer edge 51e, and the outer edge on the first inner side wall portion 51b side is the first inner side. The outer edge is 51f. Of both ends of the first drainage groove 53 in the depth direction DD, one end continuously extends to the first inner outer edge 51f, and the other end continuously extends to the first outer outer edge 51e.

A second drainage groove 54 is formed on the upper surface of the second overhanging portion 52 so as to extend along the depth direction DD. In other words, on the upper surface of the second overhanging portion 52, the second drainage groove 54 is orthogonal to the wall height direction of the second terminal side surface portion 52a and along the direction along the wall surface of the second terminal side surface portion 52a. Is formed. Of the pair of outer edges on the upper surface of the second overhanging portion 52 in the depth direction DD, the outer edge on the second outer wall portion 52c side is the second outer outer edge 52e, and the outer edge on the second inner side wall portion 52b side is the second inner side. The outer edge is 52f. Of both ends of the second drainage groove 54 in the depth direction DD, one end continuously extends to the second inner outer edge 52f, and the other end continuously extends to the second outer outer edge 52e.

FIG. 11 shows a sectional view taken along line XI-XI of FIG. As shown in FIGS. 11 and 7, the height position of the bottom of the first drainage groove 53 is lower than the height position of the bottom of the second drainage groove 54. Further, in the present embodiment, when the power supply device 10 is mounted on the vehicle, the bottom portion of the first drainage groove 53 and the bottom portion of the second drainage groove 54 are parallel to the horizontal plane.

<Terminal cover 70>
As shown in FIGS. 8 to 10, the terminal cover 70 has a facing plate portion 72 that is continuous with the cover upper surface portion 71 in a state of facing the cover upper surface portion 71 and the first terminal side surface portion 51a and the second terminal side surface portion 52a. And have. The cover upper surface portion 71 projects above the first overhanging portion 51, the second overhanging portion 52, the terminal block 100, the first connector 201, and the second connector 202.

The terminal cover 70 includes a first cover side surface portion 73 and a second cover side surface portion 74. As shown in FIG. 12, the first cover side surface portion 73 is in a state of being separated from the wall surface of the first outer wall portion 51c and facing the wall surface of the first outer wall portion 51c, and the cover upper surface portion 71 and It is a portion continuously extending from the outer edge portion of the facing plate portion 72. The second cover side surface portion 74 faces the wall surface of the second outer wall portion 52c with a gap from the wall surface of the second outer wall portion 52c, and the outer edge portions of the cover upper surface portion 71 and the facing plate portion 72. It is a part that extends continuously from. In the terminal cover 70, the first terminal side surface portion 51a and the second terminal side surface portion 52a side and the lower side are open.

Of the cover upper surface portion 71, the outer edge portions on the side surface portion 51a of the first terminal and the side surface portion 52a of the second terminal face the first facing portion 71a facing the first overhanging portion 51 and facing the second overhanging portion 52. A second facing portion 71b is formed. A first drainage groove 53 is formed on the upper surface of the first overhanging portion 51 facing the first facing portion 71a, and a second drainage is formed on the upper surface of the second overhanging portion 52 facing the second facing portion 71b. A groove 54 is formed.

In the present embodiment, the gap dimension between the inner surface of the first cover side surface portion 73 and the wall surface of the first outer wall portion 51c is smaller than the depth dimension of the first drainage groove 53. Further, the gap dimension between the inner surface of the second cover side surface portion 74 and the wall surface of the second outer wall portion 52c is made smaller than the depth dimension of the second drainage groove 54.

In the present embodiment, the space surrounded by the terminal side surface portions 51a and 52a and the terminal cover 70 is a wiring accommodating space for accommodating the first electric wiring 301 and the second electric wiring 302 in a bendable manner. This wiring accommodation space is open downward. The first electric wiring 301 and the second electric wiring 302 pass between the terminal block 100 and the first connector 201 in the wiring accommodation space.

As shown in FIG. 10, a portion of the inner surface of the first facing portion 71a facing the first drainage groove 53 is provided with a first ridge portion 75 extending downward along the first drainage groove 53. In the present embodiment, the tip of the first ridge portion 75 extends to the bottom of the first drainage groove 53. The width dimension of the first ridge portion 75 is smaller than the width dimension of the first drainage groove 53.

A second ridge 76 extending downward along the second drainage groove 54 is provided on the inner surface of the second facing portion 71b so as to face the second drainage groove 54. In the present embodiment, the tip of the second ridge 76 extends to the bottom of the second drain 54 as shown in FIG. The width dimension of the second ridge portion 76 is smaller than the width dimension of the second drainage groove 54.

In the present embodiment, the gap dimension between the portion of the first facing portion 71a facing the upper surface of the first overhanging portion 51 and the upper surface of the first overhanging portion 51 is set to 0. Further, as shown in FIG. 13, the gap dimension between the portion of the second facing portion 71b facing the upper surface of the second overhanging portion 52 and the upper surface of the second overhanging portion 52 is set to 0. ..

In the present embodiment, the first drainage path is provided by the bottom portion of the first drainage groove 53, the side wall portion of the first drainage groove 53 on the battery side top plate portion 50a side, the first ridge portion 75, and the inner surface of the first facing portion 71a. Is formed. Further, a second drainage path is formed by the bottom portion of the second drainage groove 54, the side wall portion of the second drainage groove 54 on the substrate side top plate portion 50b side, the second ridge portion 76, and the inner surface of the second facing portion 71b. ing.

Even if the gap between the facing portions 71a and 71b facing the upper surfaces of the overhanging portions 51 and 52 and the upper surface of the overhanging portions 51 and 52 is set to 0, the present invention In the embodiment, the joint portion between the terminal cover 70 and the upper case body 50 is not sealed. Therefore, for example, due to thermal deformation or dimensional intersection of at least one of the terminal cover 70 and the upper case body 50, the portions of the facing portions 71a and 71b facing the upper surfaces of the overhanging portions 51 and 52. A gap may actually be formed between the surface and the upper surfaces of the overhanging portions 51 and 52.

The effects of the present embodiment described in detail above will be described.

A first drainage groove 53 is formed on the upper surface of the first overhanging portion 51 including a portion corresponding to the terminal block 100 in the depth direction DD so as to extend along the wall surface of the first terminal side surface portion 51a. ing. Further, the upper surface of the second overhanging portion 52 includes a portion corresponding to the first connector 201 and the second connector 202 in the depth direction DD so as to extend along the wall surface of the second terminal side surface portion 52a. A second drainage ditch 54 different from the first drainage ditch 53 is formed.

In this configuration, the water flowing along the upper surface of the upper case body 50 invades the inside of the terminal cover 70 through the gap between the terminal cover 70 and the upper case body 50, and the invaded water enters the first drainage groove 53. Consider the case of flowing in. One end of the first drainage groove 53 extends to the first outer outer edge 51e on the upper surface of the first overhanging portion 51, and the other end extends to the first inner outer edge 51f on the upper surface of the first overhanging portion 51. .. Therefore, the water that has flowed into the first drainage ditch 53 is guided to at least one of the first inner side wall portion 51b and the first outer wall portion 51c without being guided to the second drainage ditch 54, and then the storage case 60. It is discharged to the outside. Thereby, for example, the length of the first drainage groove 53 as the first drainage path can be shortened as compared with the drainage path using the ridge portion described in Patent Document 1, and the drainage of the power supply device 10 can be shortened. Performance can be improved.

On the other hand, in the above configuration, consider a case where the water flowing along the upper surface of the upper case body 50 invades the inside of the terminal cover 70 and the invaded water flows into the second drainage groove 54. One end of the second drainage groove 54 extends to the second outer outer edge 52e on the upper surface of the second overhanging portion 52, and the other end extends to the second inner outer edge 52f on the upper surface of the second overhanging portion 52. .. Therefore, the water flowing into the second drainage ditch 54 is guided to at least one of the second inner side wall portion 52b and the second outer wall portion 52c without being guided to the first drainage ditch 53, and then the storage case 60. It is discharged to the outside. Thereby, for example, the length of the second drainage groove 54 as the second drainage path can be shortened as compared with the drainage path using the ridge portion described in Patent Document 1, and the drainage of the power supply device 10 can be shortened. Performance can be improved.

-On the upper surface of the upper case body 50, a groove is formed as a drainage path instead of a ridge portion. Therefore, unlike the case where the ridge portion is formed on the upper surface of the upper case body 50, it is not necessary to process the shape of the terminal cover 70 according to the shape of the ridge portion. Further, by using the groove as the drainage route, it is possible to prevent the height dimension of the storage case 60 from becoming large.

A first overhanging portion 51 is formed on the upper case body 50, and a first drainage groove 53 is formed on the upper surface of the first overhanging portion 51. Then, one end of the first drainage groove 53 extends to the first inner side wall portion 51b, and the other end extends to the first inner outer edge 51f. According to this configuration, the water that has flowed into the first drainage groove 53 can be guided to at least one of the first inner side wall portion 51b and the first inner outer edge 51f instead of the first terminal side surface portion 51a. Therefore, it is possible to prevent the water that has flowed into the first drainage groove 53 from being applied to the terminal block 100 thereafter.

A second overhanging portion 52 is formed on the upper case body 50, and a second drainage groove 54 is formed on the upper surface of the second overhanging portion 52. Then, one end of the second drainage groove 54 extends to the second inner side wall portion 52b, and the other end extends to the second inner outer edge 52f. According to this configuration, the water flowing into the second drainage groove 54 can be guided not to the second terminal side surface portion 52a but to at least one of the second inner side wall portion 52b and the second inner outer edge 52f. Therefore, it is possible to prevent the water flowing into the second drainage groove 54 from being subsequently applied to the first connector 201 and the second connector 202.

One end of the first drainage groove 53 extends to the first inner side wall portion 51b, and the other end extends to the first inner outer edge 51f. Therefore, of both ends of the first drainage groove 53, both the first inner side wall portion 51b side and the first inner outer edge 51f side can be used as the drainage path. As a result, the drainage performance can be further improved.

Further, the terminal cover 70 has a cover upper surface portion 71 and a first cover side surface portion 73 as a measure against water exposure of the terminal block 100. The first cover side surface portion 73 is provided with a gap from the first outer wall portion 51c in order to discharge the water flowing into the first drainage groove 53 from the first outer wall portion 51c side. In order to improve the drainage performance, it is desirable that this gap is large. However, if this gap is increased, the physique of the terminal cover 70 becomes large, and eventually the physique of the power supply device 10 becomes large. Therefore, in the present embodiment, there is a great merit of adopting a configuration in which the drainage performance can be improved by extending one end of the first drainage groove 53 to the first inner outer edge 51f.

One end of the second drainage groove 54 extends to the second inner side wall portion 52b, and the other end extends to the second inner outer edge 52f. Therefore, of both ends of the second drainage groove 54, both the second inner side wall portion 52b side and the second inner outer edge 52f side can be used as the drainage path. As a result, the drainage performance can be further improved.

Further, the terminal cover 70 has a cover upper surface portion 71 and a second cover side surface portion 74 as measures against water exposure of the first connector 201 and the second connector 202. The second cover side surface portion 74 is provided with a gap from the second outer wall portion 52c in order to discharge the water flowing into the second drainage groove 54 from the second outer wall portion 52c side. In order to improve the drainage performance, it is desirable that this gap is large. However, if this gap is increased, the physique of the terminal cover 70 becomes large, and eventually the physique of the power supply device 10 becomes large. Therefore, in the present embodiment, there is a great merit of adopting a configuration capable of improving the drainage performance by extending one end of the second drainage groove 54 to the second inner outer edge 52f.

A first ridge portion 75 is provided on the inner surface of the first facing portion 71a in a portion corresponding to the first drainage groove 53. According to this configuration, when water flows into the inside of the terminal cover 70, the first terminal is displayed on the upper surface of the upper case body 50 from the side opposite to the first terminal side surface portion 51a with respect to the first drainage groove 53. The water scattered on the side surface portion 51a can be received by the first ridge portion 75. The received water falls along the side surface of the first ridge portion 75 into the first drainage ditch 53. As a result, it is possible to suppress the scattering of water to the terminal block 100 provided on the side surface portion 51a of the first terminal.

Further, a second ridge portion 76 is provided on the inner surface of the second facing portion 71b at a portion corresponding to the second drainage groove 54. According to this configuration, the water scattered on the upper surface of the upper case body 50 from the side opposite to the second terminal side surface portion 52a with respect to the second drainage groove 54 toward the second terminal side surface portion 52a is hit by the second collision. It can be received by Article 76. The received water falls along the side surface of the second ridge portion 76 into the second drainage ditch 54. As a result, it is possible to suppress the scattering of water to the first connector 201 and the second connector 202 provided on the side surface portion 52a of the second terminal.

(Other embodiments)
The above embodiment may be modified as follows.

-One of both ends of the first drainage groove 53 does not have to extend to the outer edge of the first overhanging portion 51 in the depth direction DD. Further, either one of both ends of the second drainage groove 54 does not have to extend to the outer edge of the second overhanging portion 52 in the depth direction DD.

The tip of the first ridge does not have to extend to the bottom of the first drainage ditch 53. Further, a gap may be formed between the portion of the first facing portion 71a facing the upper surface of the first overhanging portion 51 and the upper surface of the first overhanging portion 51.

Further, as shown in FIG. 14, the tip of the second ridge 76a does not have to extend to the bottom of the second drainage groove 54. Further, a gap may be formed between the portion of the second facing portion 71b facing the upper surface of the second overhanging portion 52 and the upper surface of the second overhanging portion 52. In the configuration shown in FIG. 14, the flow path area of the drainage path is determined by the depth dimension D and the width dimension W of the second drainage groove 54 and the tip portion of the second ridge portion 76a. Further, FIG. 14 is a diagram corresponding to FIG. 13 above.

In FIG. 13, the height dimension of the side wall on the side surface portion 52a of the second terminal of the second drainage groove 54 and the height dimension of the side wall on the side surface portion 50b on the substrate side of the second drainage groove 54 are the same. You may. Further, the tip of the side wall of the second drainage groove 54 on the side surface portion 52a of the second terminal may be inclined toward the second drainage groove 54 side.

In FIG. 11, the height position of the bottom of the first drainage groove 53 and the height position of the bottom of the second drainage groove 54 may be the same. Further, the height position of the bottom of the first drainage groove 53 may be higher than the height position of the bottom of the second drainage groove 54.

-As shown in FIG. 15, the bottom portion of the first drainage groove 63 may be inclined so that the first inner side wall portion 51b side is lower. Further, the bottom portion of the second drainage groove 64 may be inclined so that the second inner side wall portion 52b side is lower. By the way, FIG. 15 is a diagram corresponding to FIG. 11 above.

If either end of the first drainage groove does not extend to the outer edge of the first overhanging portion 51 in the depth direction DD, the bottom side of both ends of the first drainage groove extending to the outer edge is lower. This bottom may be tilted so as to be. Further, when either one of both ends of the second drainage ditch does not extend to the outer edge of the second overhanging portion 52 in the depth direction DD, the bottom side of both ends of the second drainage ditch extending to the outer edge is lower. This bottom may be tilted so as to be.

As shown in FIG. 16, in the upper case body 50, the side surface portions 51a and 52a of the terminals do not have to project outward in the width direction WD. In this case, the first drainage groove 83 may be formed with one end extending to the outer edge in the width direction WD on the upper surface of the upper case body 50. As a result, one end of the first drainage groove 83 extends to the terminal block 100 of the upper case body 50 and the side surface portion 58 on the first connector 201 side. Note that FIG. 16 is a diagram corresponding to FIG. 4 above.

Further, as shown in FIG. 16, a second drainage groove 84 may be formed in which one end thereof extends to the outer edge in the width direction WD on the upper surface of the upper case body 50. As a result, one end of the second drainage groove 84 extends to the terminal block 100 of the upper case body 50 and the side surface portion 58 on the first connector 201 side.

As shown in FIG. 17, one end of the first drainage groove 93 did not extend to the first inner outer edge 51f of the first overhanging portion 51, and one end of the first drainage groove 93 was formed in the first overhanging portion 51. It may extend through the first hole portion 93a to the first inner side wall portion 51b. Here, the first hole portion 93a is inclined so that the height position on the first inner side wall portion 51b side is lowered. Similarly, of both ends of the first drainage groove 93, holes may be formed on the first outer outer edge 51e side instead of the first inner outer edge 51f side or together with the first inner outer edge 51f side. .. Note that FIG. 17 is a diagram corresponding to FIG. 4 above.

Further, as shown in FIG. 17, one end of the second drainage groove 94 does not extend to the second inner outer edge 52f of the second overhanging portion 52, and one end of the second drainage groove 94 is formed in the second overhanging portion 52. It may extend to the second inner side wall portion 52b through the second hole portion 94a. Here, the second hole portion 94a is inclined so that the height position on the second inner side wall portion 52b side is lowered. Similarly, of both ends of the second drainage groove 94, a hole may be formed on the second outer outer edge 52e side instead of the second inner outer edge 52f side or together with the second inner outer edge 52f side. ..

-The upper case body 50 is not limited to the one formed of a synthetic resin material, and may be formed of, for example, a metal material such as aluminum.

-In the above embodiment, the lithium ion storage battery is used as the battery cell, but the present invention is not limited to this, and the battery cell may be configured to use another secondary battery such as a NiCd storage battery or a nickel hydrogen storage battery.

The power supply device 10 of the above embodiment may be applied to a hybrid vehicle in which both the internal combustion engine and the rotary electric machine are used as the running power source of the vehicle, or the running power of the vehicle is not provided with the internal combustion engine and only the rotating electric machine is used. It may be applied to the electric vehicle as the source.

10 ... power supply device, 20 ... battery module, 40 ... lower case body, 50 ... upper case body, 60 ... storage case, 70 ... terminal cover, 100 ... terminal block, 201 ... first connector, 202 ... second connector.

Claims (9)

An in-vehicle power supply device (10) mounted in the vehicle interior.
Battery part (20) and
A storage case (60) having an upper case body (50) and a lower case body (40) and accommodating the battery unit in a storage space formed by the upper case body and the lower case.
The first terminal portion (100) and the second terminal portion (201, 202) provided on the side surface portion so as to line up along the side surface portion of the storage case and can be connected to an external device, and
The first terminal portion and the second terminal portion are attached to the outside of the terminal side surface portions (51a to 51c, 52a to 52c) which are the side surface portions where the first terminal portion and the second terminal portion are provided in the storage case. With a terminal cover (70) that covers the part,
Of the upper surface of the upper case body, the outer edge portion on the side surface portion side of the terminal and at least the portion corresponding to the first terminal portion in the direction (DD) in which the first terminal portion and the second terminal portion are lined up. A first drainage groove (53; 83; 93, 93a) is formed so as to extend along the side surface portion of the terminal.
The terminal is located on the upper surface of the upper case body at least on the outer edge portion on the side surface portion side of the terminal and at least corresponding to the second terminal portion in the direction in which the first terminal portion and the second terminal portion are arranged. A second drainage ditch (54; 84; 94,94a) different from the first drainage ditch is formed so as to extend along the side surface portion.
At least one end of both ends of the first drainage ditch in the direction in which the first drainage ditch extends is closer to the first terminal portion than the installation portion of the second terminal portion, and the first terminal portion is provided. It extends to the side surface portions (51b, 51c) of the storage case, which is not provided.
At least one end of both ends of the second drainage ditch in the direction in which the second drainage ditch extends is closer to the second terminal portion than the installation portion of the first terminal portion, and the second terminal portion is provided. An in-vehicle power supply device that extends to the side surface portions (52b, 52c) of the storage case. In the upper case body, the installation portion side of the first terminal portion of the terminal side surface portion projects outward to form the first overhanging portion (51).
Of the first overhanging portion, the terminal side surface portion on which the first terminal portion is provided is the first terminal side surface portion (51a).
Among the first overhanging portions, the terminal side surface portion on the second terminal portion side in the direction in which the first terminal portion and the second terminal portion are lined up is the first inner side wall portion (51b).
The first drainage groove (53; 93, 93a) is formed on the upper surface of the first overhanging portion.
The vehicle-mounted power supply device according to claim 1, wherein one end of the first drainage groove in the direction in which the first drainage groove extends extends to the first inner side wall portion. Of the first overhanging portion, the terminal side surface portion on the side opposite to the first inner side wall portion in the direction in which the first terminal portion and the second terminal portion are lined up is designated as the first outer wall portion (51c). And
The second aspect of claim 2, wherein one end of both ends of the first drainage ditch in the direction in which the first drainage ditch extends extends to the first inner side wall portion, and the other end extends to the first outer wall portion. In-vehicle power supply. The terminal cover is
The first overhanging portion, the first terminal portion, and the cover upper surface portion (71) protruding above the second terminal portion,
A facing plate portion (72) provided on the upper surface portion of the cover in a state of facing the side surface portion of the terminal, and
The cover upper surface portion and the first cover side surface portion (73) provided on the facing plate portion are provided in a state of facing the first outer wall portion with a gap from the first outer wall portion. And
Of the pair of outer edges on the upper surface of the first overhanging portion in the direction in which the first terminal portion and the second terminal portion are lined up, the outer edge on the first outer wall portion side is designated as the first outer outer edge (51e). The outer edge on the first inner side wall side is defined as the first inner outer edge (51f).
According to claim 3, one end of both ends of the first drainage ditch in the direction in which the first drainage ditch (53) extends extends to the first inner outer edge, and the other end extends to the first outer outer edge. The in-vehicle power supply described. In the upper case body, the installation portion side of the second terminal portion of the terminal side surface portion projects outward to form the second overhang portion (52).
Of the second overhanging portion, the terminal side surface portion on which the second terminal portion is provided is a second terminal side surface portion (52a).
Of the second overhanging portion, the terminal side surface portion on the first terminal portion side in the direction in which the first terminal portion and the second terminal portion are lined up is the second inner side wall portion (52b).
The second drainage groove (54; 94,94a) is formed on the upper surface of the second overhanging portion.
The vehicle-mounted power supply device according to any one of claims 1 to 4, wherein one end of the second drainage groove in the direction in which the second drainage groove extends extends to the second inner side wall portion. Of the second overhanging portion, the terminal side surface portion on the side opposite to the second inner side wall portion in the direction in which the first terminal portion and the second terminal portion are lined up is designated as the second outer wall portion (52c). And
The fifth aspect of claim 5, wherein one end of both ends of the second drainage groove in the direction in which the second drainage groove extends extends to the second inner side wall portion, and the other end extends to the second outer wall portion. In-vehicle power supply. The terminal cover is
The second overhanging portion, the first terminal portion, and the cover upper surface portion (71) protruding above the second terminal portion,
A facing plate portion (72) provided on the upper surface portion of the cover in a state of facing the side surface portion of the terminal, and
The cover upper surface portion and the second cover side surface portion (74) provided on the facing plate portion are provided in a state of facing the second outer wall portion with a gap from the second outer wall portion. And
Of the pair of outer edges on the upper surface of the second overhanging portion in the direction in which the first terminal portion and the second terminal portion are lined up, the outer edge on the second outer wall portion side is designated as the second outer outer edge (52e). The outer edge on the side of the second inner side wall is the second inner outer edge (52f).
According to claim 6, one end of both ends of the second drainage ditch in the direction in which the second drainage ditch (54) extends extends to the second inner outer edge, and the other end extends to the second outer outer edge. The in-vehicle power supply described. The terminal cover is
Of the upper surface of the upper case body, the outer edge portion on the side surface portion of the terminal, the upper surface portion (71) of the cover protruding above the first terminal portion and the second terminal portion, and
It has a facing plate portion (72) provided on the upper surface portion of the cover in a state of facing the side surface portion of the terminal.
The first drainage groove and the second drainage groove are formed in a portion of the upper surface of the upper case body facing the upper surface portion of the cover at the outer edge portion on the side surface portion side of the terminal.
A first ridge portion (75) extending downward along the first drainage groove is provided on the inner surface of the upper surface portion of the cover corresponding to the first drainage groove.
Claims 1 to 7 are provided with a second ridge portion (76; 76a) extending downward along the second drainage groove on the inner surface of the upper surface portion of the cover corresponding to the second drainage groove. The in-vehicle power supply device according to any one of the above items. The space surrounded by the terminal side surface portion and the terminal cover is defined as a wiring accommodation space for accommodating the electrical wiring (301, 302) connected to the first terminal portion, and the wiring accommodation space is downward. It is open and
The vehicle-mounted power supply device according to any one of claims 1 to 8, wherein the electrical wiring passes between the first terminal portion and the second terminal portion in the wiring accommodation space.

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