JP6459767B2 - Method for laminating electrode sheets - Google Patents
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- JP6459767B2 JP6459767B2 JP2015098518A JP2015098518A JP6459767B2 JP 6459767 B2 JP6459767 B2 JP 6459767B2 JP 2015098518 A JP2015098518 A JP 2015098518A JP 2015098518 A JP2015098518 A JP 2015098518A JP 6459767 B2 JP6459767 B2 JP 6459767B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Description
本発明は、正電極シートと負電極シートとを交互に複数積層する電極シートの積層方法に関する。 The present invention relates to a method for laminating electrode sheets in which a plurality of positive electrode sheets and negative electrode sheets are alternately laminated.
例えばリチウムイオン二次電池は、正電極シート、負電極シート、及びセパレータシートが複数積層された積層体を備えており、同積層体では、正電極シートと負電極シートとの間にセパレータシートが位置している（例えば特許文献１参照）。 For example, a lithium ion secondary battery includes a laminated body in which a plurality of positive electrode sheets, negative electrode sheets, and separator sheets are laminated, and in the laminated body, a separator sheet is provided between the positive electrode sheet and the negative electrode sheet. It is located (for example, refer to Patent Document 1).
また従来、こうした積層体を形成する際には、正電極シート、負電極シート、及びセパレータシートが、エアの負圧を利用した吸引装置によって１枚ずつ吸引されながら載置台の上方に搬送され、載置台の上方にて吸引が停止されることによって載置台上の所定の位置に載置される。 Further, conventionally, when forming such a laminate, the positive electrode sheet, the negative electrode sheet, and the separator sheet are conveyed above the mounting table while being sucked one by one by a suction device using negative pressure of air, When the suction is stopped above the mounting table, it is mounted at a predetermined position on the mounting table.
ところで、このような従来の積層方法の場合、正電極シートや負電極シートの素材をそれぞれ所定の形状に予め切断しておくとともに、正電極シート及び負電極シートの向きを予めそれぞれ揃えておく必要がある。また上記積層方法の場合、正電極シートに対する吸引を停止して同正電極シートが所定の位置に載置された後に、負電極シートに対する吸引を停止して同負電極シートが所定の位置に載置されることとなる。そのため、電極シートの積層に要する時間を短縮するには自ずと限界がある。 By the way, in the case of such a conventional laminating method, it is necessary to cut the materials of the positive electrode sheet and the negative electrode sheet into a predetermined shape in advance and to align the directions of the positive electrode sheet and the negative electrode sheet in advance. There is. In the case of the above-described lamination method, after suction to the positive electrode sheet is stopped and the positive electrode sheet is placed at a predetermined position, suction to the negative electrode sheet is stopped and the negative electrode sheet is placed at a predetermined position. Will be placed. Therefore, there is a limit to shortening the time required for stacking the electrode sheets.
本発明の目的は、電極シートを効率よく積層することのできる電極シートの積層方法を提供することにある。 The objective of this invention is providing the lamination method of the electrode sheet which can laminate | stack an electrode sheet efficiently.
上記目的を達成するための電極シートの積層方法は、正電極シートと負電極シートとを交互に複数積層する方法であって、前記正電極シート及び前記負電極シートの素材である電極材は、それぞれ帯状をなし、それらの長手方向に沿って延びるとともに互いに所定の間隔をおいて形成された所定長さの複数のスリットをそれぞれ有し、載置台には前記電極材の各々の送り出しを規制する規制部材が前記正電極シート及び前記負電極シートの積層位置にそれぞれ対応して立設され、前記電極材の各々の送り出し方向における前記電極材の各々の前端に開口する前記スリットが、前記規制部材にそれぞれ外挿されつつ、前記スリットの後端縁が前記規制部材に当接するまで前記電極材の各々をそれぞれ送り出す第１工程と、前記スリットの後端縁が前記規制部材に当接した状態において、当該スリットと隣り合うスリットが含まれるように前記電極材の各々を前端から所定の長さの位置にて切断する第２工程と、を交互に繰り返し実行する。 The electrode sheet laminating method for achieving the above object is a method of alternately laminating a plurality of positive electrode sheets and negative electrode sheets, and the electrode material that is a material of the positive electrode sheet and the negative electrode sheet is: Each of the strips has a plurality of slits with a predetermined length that extend along the longitudinal direction of the belt and that are formed at predetermined intervals, and the mounting table regulates the feeding of each of the electrode materials. A regulating member is erected corresponding to each of the stacked positions of the positive electrode sheet and the negative electrode sheet, and the slit that opens at each front end of the electrode material in the feeding direction of the electrode material is the regulating member A first step of feeding each of the electrode materials until the rear end edge of the slit comes into contact with the restriction member, and the rear end edge of the slit. A second step of cutting each of the electrode materials at a position of a predetermined length from the front end so as to include a slit adjacent to the slit in a state of being in contact with the regulating member is alternately and repeatedly executed. .
同方法によれば、第１工程において各電極材を送り出す際に、各規制部材によって案内されるとともに、各電極材の送り出しが規制される。
続いて、第２工程では、スリットの後端縁が規制部材に当接した状態において、各電極材が前端から所定の長さの位置にて切断される。これにより、各電極材の切断片である正電極シート及び負電極シートはそれぞれ自重により落下するとともに、その際、規制部材によって載置台の所定の位置にそれぞれ案内される。
According to this method, when each electrode material is fed out in the first step, it is guided by each regulating member and the feeding of each electrode material is regulated.
Subsequently, in the second step, each electrode material is cut at a predetermined length from the front end in a state where the rear end edge of the slit is in contact with the regulating member. Accordingly, the positive electrode sheet and the negative electrode sheet, which are cut pieces of the respective electrode materials, are dropped by their own weights, and at that time, are respectively guided to predetermined positions on the mounting table by the regulating member.
またこのとき、各電極材は、規制部材が内挿されているスリットと隣り合うスリットが含まれるように切断されるため、切断後の各電極材の前端には再びスリットが開口することとなる。このため、このスリットが規制部材にそれぞれ外挿されるように各電極材を送り出すことにより、第１工程を再び実行することが可能となる。 At this time, since each electrode material is cut so as to include a slit adjacent to the slit in which the regulating member is inserted, a slit is opened again at the front end of each electrode material after cutting. . For this reason, it becomes possible to perform a 1st process again by sending out each electrode material so that this slit may each be extrapolated by the control member.
そして、第１工程と第２工程とを繰り返し実行することにより、載置台の所定の位置に正電極シートと負電極シートとが交互に複数積層される。
このように上記方法によれば、正電極シート及び負電極シートをそれぞれ位置決めしながら交互に複数積層することができる。また、一方の電極材の送り出し及び切断が実行されているときに、他方の電極材の送り出し及び切断の実行が妨げられることはない。
Then, by repeatedly performing the first step and the second step, a plurality of positive electrode sheets and negative electrode sheets are alternately stacked at predetermined positions on the mounting table.
Thus, according to the above method, a plurality of positive electrode sheets and negative electrode sheets can be alternately stacked while being positioned. Further, when the feeding and cutting of one electrode material is being performed, the feeding and cutting of the other electrode material is not hindered.
本発明によれば、正電極シート及び負電極シートを効率よく積層することができる。 According to the present invention, the positive electrode sheet and the negative electrode sheet can be efficiently laminated.
以下、図１〜図５を参照して、電極シートの積層方法をリチウムイオン二次電池（以下、単に二次電池１０と称する。）の積層体を形成する際の積層方法として具体化した一実施形態について説明する。 Hereinafter, with reference to FIGS. 1 to 5, an electrode sheet stacking method is embodied as a stacking method for forming a stack of lithium ion secondary batteries (hereinafter simply referred to as secondary battery 10). Embodiments will be described.
図１に示すように、二次電池１０は、ケース１１、ケース１１の内部に収容された積層体１２、並びに積層体１２の正電極及び負電極にそれぞれ接続された正電極端子１３及び負電極端子１４を備えている。 As shown in FIG. 1, the secondary battery 10 includes a case 11, a laminated body 12 accommodated in the case 11, and a positive electrode terminal 13 and a negative electrode connected to the positive electrode and the negative electrode of the laminated body 12, respectively. A terminal 14 is provided.
図２に示すように、本実施形態の積層体１２は、正電極シート２０と負電極シート３０とが交互に複数積層されることにより形成されている。
正電極シート２０は、例えば数十μｍの厚さのアルミニウム箔からなる基材２１を有しており、同基材２１の両面には例えばコバルト酸リチウムなどの周知の材料からなる活物質（図示略）が被着されている。正電極シート２０における活物質が被着されている部分は起電部２２として機能する。また、正電極シート２０における幅方向の一端部（同図の下端部）には、活物質が被着されていない。この一端部は、基材２１が露出しており、集電部２３として機能する。また、集電部２３には長さ方向に延びるとともに長さ方向の一端（同図の左端）に開口するスリット２４が形成されている。
As shown in FIG. 2, the laminate 12 of the present embodiment is formed by alternately laminating a plurality of positive electrode sheets 20 and negative electrode sheets 30.
The positive electrode sheet 20 has a base material 21 made of, for example, an aluminum foil having a thickness of several tens of μm, and an active material (illustrated) made of a known material such as lithium cobalt oxide on both surfaces of the base material 21. (Omitted) is attached. The portion of the positive electrode sheet 20 on which the active material is deposited functions as the electromotive unit 22. Further, the active material is not deposited on one end (the lower end in the figure) of the positive electrode sheet 20 in the width direction. At one end, the base material 21 is exposed and functions as the current collector 23. Further, the current collector 23 is formed with a slit 24 that extends in the length direction and opens at one end in the length direction (the left end in the figure).
負電極シート３０は、例えば数十μｍの厚さの銅箔からなる基材３１を有しており、同基材３１の両面には例えば炭素材料などの周知の材料からなる活物質（図示略）が被着されている。負電極シート３０における活物質が被着されている部分は起電部３２として機能する。また、負電極シート３０における幅方向の一端部（同図の上端部）には、活物質が被着されていない。この一端部は、基材３１が露出しており、集電部３３として機能する。また、集電部３３には長さ方向に延びるとともに長さ方向の一端（同図の左端）に開口するスリット３４が形成されている。 The negative electrode sheet 30 includes a base material 31 made of, for example, a copper foil having a thickness of several tens of μm, and an active material (not shown) made of a known material such as a carbon material is provided on both surfaces of the base material 31. ) Is attached. The portion of the negative electrode sheet 30 on which the active material is deposited functions as the electromotive unit 32. Further, the active material is not deposited on one end (the upper end in the figure) of the negative electrode sheet 30 in the width direction. At one end, the base material 31 is exposed and functions as a current collector 33. The current collector 33 is formed with a slit 34 that extends in the length direction and opens at one end in the length direction (the left end in the figure).
正電極シート２０の起電部２２と負電極シート３０の起電部３２とは積層方向において互いに対向して配置される。
本実施形態の正電極シート２０の両面には、起電部２２全体を被覆するとともに正電極シート２０と負電極シート３０とを絶縁するセパレータ２５が一体形成されている。セパレータ２５は例えば合成樹脂繊維からなる不織布によって形成されている。
The electromotive part 22 of the positive electrode sheet 20 and the electromotive part 32 of the negative electrode sheet 30 are arranged to face each other in the stacking direction.
On both surfaces of the positive electrode sheet 20 of the present embodiment, separators 25 that cover the entire electromotive unit 22 and insulate the positive electrode sheet 20 and the negative electrode sheet 30 are integrally formed. The separator 25 is formed of a nonwoven fabric made of synthetic resin fibers, for example.
次に、正電極シート２０と負電極シート３０とを交互に複数積層する積層装置の構成について説明する。
図３に示すように、載置台４０には、前側規制ピン５１及び後側規制ピン５２が正電極シート２０の集電部２３の積層位置に対応して互いに間隔をおいて立設されている。また、載置台４０には、前側規制ピン６１及び後側規制ピン６２が負電極シート３０の集電部３３の積層位置に対応して互いに間隔をおいて立設されている。
Next, the configuration of a laminating apparatus that alternately stacks a plurality of positive electrode sheets 20 and negative electrode sheets 30 will be described.
As shown in FIG. 3, on the mounting table 40, a front side regulation pin 51 and a rear side regulation pin 52 are erected at intervals from each other corresponding to the stacking position of the current collector 23 of the positive electrode sheet 20. . Further, on the mounting table 40, a front side regulation pin 61 and a rear side regulation pin 62 are erected at intervals from each other corresponding to the stacking position of the current collector 33 of the negative electrode sheet 30.
正電極シート２０の素材である正電極材１２０は帯状、より詳しくはロール状をなしている。負電極シート３０の素材である負電極材１３０は帯状、より詳しくはロール状をなしている。電極材１２０，１３０は、前記起電部２２，３２及び前記集電部２３，３３をそれぞれ有している。正電極材１２０の起電部２２の両面には前記セパレータ２５が一体形成されている。 The positive electrode material 120 that is a material of the positive electrode sheet 20 has a strip shape, more specifically, a roll shape. The negative electrode material 130 that is a material of the negative electrode sheet 30 has a strip shape, more specifically, a roll shape. The electrode materials 120 and 130 have the electromotive units 22 and 32 and the current collectors 23 and 33, respectively. The separators 25 are integrally formed on both surfaces of the electromotive portion 22 of the positive electrode material 120.
正電極材１２０は負電極材１３０よりも上方に配置されており、正電極シート２０に一体形成された下側のセパレータ２５と負電極シート３０の上側の起電部３２とが上下方向において対向している。 The positive electrode material 120 is disposed above the negative electrode material 130, and the lower separator 25 integrally formed with the positive electrode sheet 20 and the upper electromotive portion 32 of the negative electrode sheet 30 face each other in the vertical direction. doing.
図３、図４（ａ）、及び図４（ｂ）に示すように、各電極材１２０，１３０には、それらの長手方向に沿って延びるとともに互いに所定の間隔をおいて形成された所定長さＬ２の複数の前記スリット２４，３４が形成されている。 As shown in FIGS. 3, 4 (a), and 4 (b), each electrode material 120, 130 has a predetermined length that extends along the longitudinal direction and is formed at a predetermined interval from each other. A plurality of the slits 24 and 34 having a length L2 are formed.
次に、本実施形態の作用について説明する。
図３に示すように、送り出し機（図示略）によって、規制ピン５１，５２（６１，６２）の並び方向に沿って各電極材１２０，１３０が送り出される。
Next, the operation of this embodiment will be described.
As shown in FIG. 3, the electrode members 120 and 130 are sent out along the direction in which the regulation pins 51 and 52 (61 and 62) are arranged by a feeding machine (not shown).
このとき、送り出し方向における各電極材１２０，１３０の前端に開口するスリット２４，３４が、複数の規制ピン５１，５２，６１，６２にそれぞれ外挿されつつ、スリット２４，３４の後端縁が後側規制ピン５２，６２に当接するまで各電極材１２０，１３０がそれぞれ送り出される（第１工程）。このため、各電極材１２０，１３０のスリット２４，３４が複数の規制ピン５１，５２，６１，６２によって案内されるとともに、送り出し方向及び同送り出し方向に直交する幅方向の双方における各電極材１２０，１３０の位置決めが行なわれる。 At this time, the slits 24 and 34 that open to the front ends of the electrode members 120 and 130 in the feeding direction are extrapolated to the plurality of regulating pins 51, 52, 61, and 62, respectively, and the rear edges of the slits 24 and 34 are The electrode materials 120 and 130 are fed out until they contact the rear side regulation pins 52 and 62 (first step). For this reason, the slits 24 and 34 of the electrode members 120 and 130 are guided by the plurality of regulating pins 51, 52, 61 and 62, and the electrode members 120 in both the feeding direction and the width direction orthogonal to the feeding direction. , 130 are positioned.
続いて、図３、図４（ａ）、及び図４（ｂ）に示すように、スリット２４，３４の後端縁が後側規制ピン５２，６２に当接した状態において、当該スリット２４，３４と隣り合うスリット２４，３４が含まれるように各電極材１２０，１３０が前端から所定の長さＬ１の位置にて切断機（図示略）により切断される（第２工程）。これにより、図５に示すように、各電極材１２０，１３０の切断片である正電極シート２０及び負電極シート３０はそれぞれ自重により落下するとともに、その際、規制ピン５１，５２，６１，６２によって載置台４０の所定の位置にそれぞれ案内される。 Subsequently, as shown in FIGS. 3, 4 (a), and 4 (b), when the rear end edges of the slits 24, 34 are in contact with the rear side regulation pins 52, 62, the slits 24, Each electrode member 120, 130 is cut from the front end by a cutting machine (not shown) at a position of a predetermined length L1 so as to include the slits 24, 34 adjacent to 34 (second step). Thereby, as shown in FIG. 5, the positive electrode sheet 20 and the negative electrode sheet 30, which are cut pieces of the electrode materials 120 and 130, fall due to their own weights, and at that time, the regulation pins 51, 52, 61, 62. Are respectively guided to predetermined positions on the mounting table 40.
またこのとき、各電極材１２０，１３０は、規制ピン５１，５２，６１，６２が内挿されているスリット２４，３４と隣り合うスリット２４，３４が含まれるように切断されるため、切断後の各電極材１２０，１３０の前端には再びスリット２４，３４が開口することとなる。このため、このスリット２４，３４が規制ピン５１，５２，６１，６２にそれぞれ外挿されるように各電極材１２０，１３０が送り出されることにより、第１工程を再び実行することが可能となる。 At this time, the electrode members 120 and 130 are cut so as to include the slits 24 and 34 adjacent to the slits 24 and 34 into which the regulation pins 51, 52, 61 and 62 are inserted. The slits 24 and 34 are again opened at the front ends of the electrode members 120 and 130. Therefore, the first step can be performed again by feeding the electrode materials 120 and 130 so that the slits 24 and 34 are extrapolated to the regulation pins 51, 52, 61, and 62, respectively.
そして、第１工程と第２工程とを繰り返し実行することにより、載置台４０の所定の位置に正電極シート２０と負電極シート３０とが交互に複数積層される。
以上説明した本実施形態に係る電極シートの積層方法によれば、以下に示す効果が得られるようになる。
Then, by repeatedly performing the first step and the second step, a plurality of positive electrode sheets 20 and negative electrode sheets 30 are alternately stacked at predetermined positions on the mounting table 40.
According to the electrode sheet laminating method according to the present embodiment described above, the following effects can be obtained.
（１）送り出し方向における各電極材１２０，１３０の前端に開口するスリット２４，３４が、規制ピン５１，５２，６１，６２にそれぞれ外挿されつつ、スリット２４，３４の後端縁が後側規制ピン５２，６２に当接するまで各電極材１２０，１３０をそれぞれ送り出すようにした（第１工程）。また、スリット２４，３４の後端縁が後側規制ピン５２，６２に当接した状態において、当該スリット２４，３４と隣り合うスリット２４，３４が含まれるように各電極材１２０，１３０を前端から所定の長さＬ１の位置にて切断するようにした（第２工程）。また、第１工程と第２工程とを交互に繰り返し実行するようにした。 (1) The slits 24 and 34 that open to the front ends of the electrode members 120 and 130 in the feed-out direction are extrapolated to the regulation pins 51, 52, 61, and 62, respectively, and the rear end edges of the slits 24 and 34 are on the rear side. The electrode members 120 and 130 are sent out until they come into contact with the regulation pins 52 and 62 (first step). Further, in a state where the rear end edges of the slits 24 and 34 are in contact with the rear side regulation pins 52 and 62, the electrode members 120 and 130 are arranged at the front end so that the slits 24 and 34 adjacent to the slits 24 and 34 are included. To be cut at a predetermined length L1 (second step). In addition, the first process and the second process are repeatedly performed alternately.
こうした方法によれば、正電極シート２０及び負電極シート３０をそれぞれ位置決めしながら交互に複数積層することができる。また、一方の電極材１２０（１３０）の送り出し及び切断が実行されているときに、他方の電極材１３０（１２０）の送り出し及び切断の実行が妨げられることはない。したがって、正電極シート２０及び負電極シート３０を効率よく積層することができる。 According to such a method, a plurality of positive electrode sheets 20 and negative electrode sheets 30 can be alternately stacked while being positioned. Further, when the feeding and cutting of one electrode material 120 (130) is being performed, the feeding and cutting of the other electrode material 130 (120) is not hindered. Therefore, the positive electrode sheet 20 and the negative electrode sheet 30 can be efficiently laminated.
（２）載置台４０における後側規制ピン５２，６２の前側には、同後側規制ピン５２，６２との協働によって当該電極材１２０，１３０が同送り出し方向に対して傾くことを規制する前側規制ピン５１，６１が立設されている。 (2) On the front side of the rear side regulation pins 52 and 62 in the mounting table 40, the electrode materials 120 and 130 are restricted from being inclined with respect to the same delivery direction in cooperation with the rear side regulation pins 52 and 62. Front side regulation pins 51 and 61 are erected.
こうした方法によれば、正電極シート２０及び負電極シート３０を、各電極材１２０，１３０の送り出し方向及び同送り出し方向に直交する幅方向の双方において精度良く位置決めしながら交互に複数積層することができる。 According to such a method, the positive electrode sheets 20 and the negative electrode sheets 30 can be alternately stacked while being accurately positioned in both the feeding direction of the electrode members 120 and 130 and the width direction orthogonal to the feeding direction. it can.
（３）スリット２４，３４は集電部２３，３３に形成されている。このため、スリット２４，３４に締結部材をそれぞれ挿通することにより、複数の電極シート２０，３０の集電部２３，３３をそれぞれ締結することができる。 (3) The slits 24 and 34 are formed in the current collectors 23 and 33. For this reason, the current collection parts 23 and 33 of the plurality of electrode sheets 20 and 30 can be fastened by inserting the fastening members into the slits 24 and 34, respectively.
（４）正電極材１２０の両面には、正電極シート２０と負電極シート３０とを絶縁するセパレータ２５が一体形成されている。
このため、正電極シート２０と負電極シート３０とを積層することによって、正電極シート２０の起電部２２と負電極シート３０の起電部３２との間にセパレータ２５が介在することとなる。したがって、正電極シート２０と負電極シート３０との間にセパレータ２５を別途積層する必要がなくなり、積層体１２を容易に形成することができる。
(4) Separators 25 that insulate the positive electrode sheet 20 and the negative electrode sheet 30 are integrally formed on both surfaces of the positive electrode material 120.
For this reason, by laminating the positive electrode sheet 20 and the negative electrode sheet 30, the separator 25 is interposed between the electromotive portion 22 of the positive electrode sheet 20 and the electromotive portion 32 of the negative electrode sheet 30. . Therefore, it is not necessary to separately laminate the separator 25 between the positive electrode sheet 20 and the negative electrode sheet 30, and the laminate 12 can be easily formed.
＜変形例＞
なお、上記実施形態は、例えば以下のように変更することもできる。
・正電極材１２０のスリット２４の長さと負電極材１３０のスリット３４の長さとを互いに異ならせることもできる。この場合、スリット２４，３４の長さに応じて後側規制ピン５２，６２の位置を変更すればよい。
<Modification>
In addition, the said embodiment can also be changed as follows, for example.
The length of the slit 24 of the positive electrode material 120 and the length of the slit 34 of the negative electrode material 130 can be made different from each other. In this case, the positions of the rear side regulation pins 52 and 62 may be changed according to the lengths of the slits 24 and 34.
・スリット２４，３４は締結部材を挿通する挿通孔として利用されるものに限定されず、正電極シート２０及び負電極シート３０を積層した後にスリット２４，３４がなくなるように集電部２３，３３の一部を切断することもできる。 The slits 24 and 34 are not limited to those used as insertion holes through which the fastening members are inserted, and the current collectors 23 and 33 so that the slits 24 and 34 disappear after the positive electrode sheet 20 and the negative electrode sheet 30 are laminated. It is also possible to cut a part of.
・正電極材１２０のロール状の部分にセパレータ２５が形成されていることは必須ではない。例えば、正電極材１２０のロール状の部分から送り出された部位に対してセパレータ２５を形成する工程を別途設けることもできる。 -It is not essential that the separator 25 is formed in the roll-shaped part of the positive electrode material 120. For example, a step of forming the separator 25 can be separately provided for the portion fed from the roll-shaped portion of the positive electrode material 120.
・負電極材１３０の起電部３２の両面を覆うようにセパレータを一体形成することもできる。この場合、正電極材１２０のセパレータ２５を省略することができる。
・例えば正電極材１２０の上側の起電部２２を覆うセパレータ２５を省略し、負電極材１３０の下側の起電部３２を覆うようにセパレータを一体形成することもできる。また、正電極材１２０の下側の起電部２２を覆うセパレータ２５を省略し、負電極材１３０の上側の起電部３２を覆うようにセパレータを一体形成することもできる。すなわち、各電極材１２０，１３０の一方の面に、セパレータを一体形成することもできる。この場合であっても、上記実施形態の効果（３）に準じた効果を奏することができる。
-A separator can also be integrally formed so that both surfaces of the electromotive part 32 of the negative electrode material 130 may be covered. In this case, the separator 25 of the positive electrode material 120 can be omitted.
For example, the separator 25 covering the electromotive portion 22 on the upper side of the positive electrode material 120 may be omitted, and the separator may be integrally formed so as to cover the electromotive portion 32 on the lower side of the negative electrode material 130. Alternatively, the separator 25 covering the lower electromotive portion 22 of the positive electrode material 120 may be omitted, and the separator may be integrally formed so as to cover the upper electromotive portion 32 of the negative electrode material 130. That is, a separator can be integrally formed on one surface of each electrode material 120, 130. Even in this case, the effect according to the effect (3) of the embodiment can be obtained.
・前側規制ピン５１，６１と後側規制ピン５２，６２との間に規制ピンを追加することもできる。また、後側規制部材を送り出し方向に対して長い形状を有するものとすれば、前側規制部材を省略することもできる。 A restriction pin can be added between the front restriction pins 51 and 61 and the rear restriction pins 52 and 62. Further, if the rear regulating member has a long shape with respect to the feeding direction, the front regulating member can be omitted.
１０…二次電池、１１…ケース、１２…積層体、１３…正電極端子、１４…負電極端子、２０…正電極シート、２１…基材、２２…起電部、２３…集電部、２４…スリット、２５…セパレータ、３０…負電極シート、３１…基材、３２…起電部、３３…集電部、３４…スリット、４０…載置台、５１…前側規制ピン（前側規制部材）、５２…後側規制ピン（後側規制部材）、６１…前側規制ピン（前側規制部材）、６２…後側規制ピン（後側規制部材）、１２０…正電極材、１３０…負電極材。 DESCRIPTION OF SYMBOLS 10 ... Secondary battery, 11 ... Case, 12 ... Laminated body, 13 ... Positive electrode terminal, 14 ... Negative electrode terminal, 20 ... Positive electrode sheet, 21 ... Base material, 22 ... Electromotive part, 23 ... Current collection part, 24 ... slit, 25 ... separator, 30 ... negative electrode sheet, 31 ... base material, 32 ... electromotive part, 33 ... current collecting part, 34 ... slit, 40 ... mounting table, 51 ... front regulating pin (front regulating member) , 52 ... rear side regulation pin (rear side regulation member), 61 ... front side regulation pin (front side regulation member), 62 ... rear side regulation pin (rear side regulation member), 120 ... positive electrode material, 130 ... negative electrode material.
Claims (5)
前記正電極シート及び前記負電極シートの素材である電極材は、それぞれ帯状をなし、それらの長手方向に沿って延びるとともに互いに所定の間隔をおいて形成された所定長さの複数のスリットをそれぞれ有し、
載置台には前記電極材の各々の送り出しを規制する規制部材が前記正電極シート及び前記負電極シートの積層位置にそれぞれ対応して立設され、
前記電極材の各々の送り出し方向における前記電極材の各々の前端に開口する前記スリットが、前記規制部材にそれぞれ外挿されつつ、前記スリットの後端縁が前記規制部材に当接するまで前記電極材の各々をそれぞれ送り出す第１工程と、
前記スリットの後端縁が前記規制部材に当接した状態において、当該スリットと隣り合うスリットが含まれるように前記電極材の各々を前端から所定の長さの位置にて切断する第２工程と、を交互に繰り返し実行する、
電極シートの積層方法。 A method of laminating a plurality of positive electrode sheets and negative electrode sheets alternately,
The electrode material that is the material of the positive electrode sheet and the negative electrode sheet each has a strip shape, and extends along the longitudinal direction thereof and has a plurality of slits having a predetermined length formed at predetermined intervals. Have
On the mounting table, a regulating member that regulates the feeding of each of the electrode materials is erected corresponding to the lamination position of the positive electrode sheet and the negative electrode sheet,
The electrode material until the rear end edge of the slit abuts on the regulating member while the slit opening at the front end of each of the electrode material in the feeding direction of each of the electrode materials is respectively extrapolated to the regulating member A first step of sending each of
A second step of cutting each of the electrode materials at a position of a predetermined length from the front end so that a slit adjacent to the slit is included in a state where a rear end edge of the slit is in contact with the regulating member; , Repeatedly and alternately
Method for laminating electrode sheets.
前記規制部材を後側規制部材とするとき、
前記載置台における前記後側規制部材の前側には、同後側規制部材との協働によって当該電極材が同送り出し方向に対して傾くことを規制する前側規制部材が立設されている、
電極シートの積層方法。 In the lamination method of the electrode sheet according to claim 1,
When the restriction member is a rear restriction member,
On the front side of the rear side regulation member in the mounting table, a front side regulation member that regulates the electrode material from being inclined with respect to the delivery direction by cooperating with the rear side regulation member is erected.
Method for laminating electrode sheets.
前記スリットは前記集電部に形成されている、
請求項１または請求項２に記載の電極シートの積層方法。 Each of the electrode materials has an electromotive portion in which an active material is deposited on both surfaces of a base material, and a current collecting portion that is located at one end portion in the width direction of the electrode material and from which the base material is exposed. ,
The slit is formed in the current collector,
The lamination method of the electrode sheet of Claim 1 or Claim 2.
請求項１〜請求項３のいずれか一項に記載の電極シートの積層方法。 Separators that insulate the positive electrode sheet and the negative electrode sheet are integrally formed on both surfaces of the one electrode material,
The lamination method of the electrode sheet as described in any one of Claims 1-3.
請求項１〜請求項３のいずれか一項に記載の電極シートの積層方法。 A separator that insulates the positive electrode sheet and the negative electrode sheet is integrally formed on one surface of each of the electrode materials.
The lamination method of the electrode sheet as described in any one of Claims 1-3.
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