JP2019083151A - Manufacturing apparatus of power storage device and manufacturing method of power storage device - Google Patents

Manufacturing apparatus of power storage device and manufacturing method of power storage device Download PDF

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JP2019083151A
JP2019083151A JP2017210710A JP2017210710A JP2019083151A JP 2019083151 A JP2019083151 A JP 2019083151A JP 2017210710 A JP2017210710 A JP 2017210710A JP 2017210710 A JP2017210710 A JP 2017210710A JP 2019083151 A JP2019083151 A JP 2019083151A
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lid
holding
assembly
main body
case main
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真也 木村
Shinya Kimura
真也 木村
克哉 山本
Katsuya Yamamoto
克哉 山本
山田　剛史
Tsuyoshi Yamada
剛史 山田
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Toyota Industries Corp
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Toyota Industries Corp
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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
    • 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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  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Cell Separators (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

To provide a manufacturing apparatus of a power storage device and a manufacturing method of a power storage device, capable of improving productivity of the power storage device.SOLUTION: A secondary battery 10 comprises: an electrode assembly; a case having a case main body that houses the electrode assembly and a lid; a positive electrode terminal and a negative electrode terminal; a conductive member arranged between a lower surface of the lid and a tab side end surface of the electrode assembly; and an insulation cover that is arranged between the lid and the conductive member, and insulates both of them. The electrode assembly, the lid, the positive electrode terminal, the negative electrode terminal, and the conductive member, are integrated as an assembly member W. A manufacturing apparatus 50 of the secondary battery, comprises a fixture 51 having a first and a second lid holding parts which move to a holding position holding the lid of the assembly member W and a non-holding position not holding them. The manufacturing apparatus 50 of the secondary battery comprises: a conveying device 80 continuously conveying the fixture 51; a first arm part 71 running with the fixture 51; a first cover pressing part 73; a second cover pressing part 74; a suction part 75; and a lid pressing part 77.SELECTED DRAWING: Figure 4

Description

本発明は、電極組立体、ケース、電極端子、導電部材、及び絶縁カバーを有する蓄電装置を製造する蓄電装置の製造装置及び蓄電装置の製造方法に関する。   The present invention relates to a storage device manufacturing apparatus and a storage device manufacturing method for manufacturing a storage device including an electrode assembly, a case, an electrode terminal, a conductive member, and an insulating cover.

従来から、ＥＶ（Electric Vehicle）やＰＨＶ（Plug in Hybrid Vehicle）などの車両には、走行用モータへの供給電力を蓄える蓄電装置としてリチウムイオン二次電池やニッケル水素二次電池などが搭載されている。特許文献１に開示の二次電池は、シート状の正極及び負極の電極が絶縁された状態で積層された電極組立体と、電極組立体を収容するケースとを備える。電極組立体は、電極の一辺の一部から突出したタブを同じ極性同士で寄せ集めたタブ群を有する。ケースは、有底筒状のケース本体と、ケース本体の開口部を閉塞する蓋とを有する。   Conventionally, in vehicles such as EV (Electric Vehicle) and PHV (Plug in Hybrid Vehicle), a lithium ion secondary battery, a nickel hydrogen secondary battery, etc. are mounted as a storage device for storing power supplied to a traveling motor. There is. The secondary battery disclosed in Patent Document 1 includes an electrode assembly stacked in a state in which the sheet-like positive and negative electrodes are insulated, and a case for housing the electrode assembly. The electrode assembly has a tab group in which tabs protruding from a part of one side of the electrode are gathered with the same polarity. The case has a bottomed cylindrical case body and a lid closing the opening of the case body.

二次電池は、電極組立体と電気を授受する電極端子を備える。電極端子は、蓋に固定されている。電極端子の一部である導電部材は、電極組立体のタブ群と接合されている。これにより、電極端子は、導電部材及びタブ群を介して電極組立体と電気的に接続されているとともに、電極組立体、蓋、電極端子、導電部材、及びタブ群は組立部材として一体化されている。また、二次電池には、蓋と導電部材との間に配置され、蓋と導電部材とを絶縁する絶縁カバーを備えたものがある。   The secondary battery includes an electrode terminal that exchanges electricity with the electrode assembly. The electrode terminal is fixed to the lid. A conductive member that is part of the electrode terminal is joined to the tabs of the electrode assembly. Thus, the electrode terminal is electrically connected to the electrode assembly through the conductive member and the tab group, and the electrode assembly, the lid, the electrode terminal, the conductive member, and the tab group are integrated as an assembly member. ing. Some secondary batteries are provided with an insulating cover that is disposed between the lid and the conductive member and insulates the lid from the conductive member.

特開２０１６−１２２５３３号公報JP, 2016-122533, A

ところで、一般に、二次電池の製造工程は、組立工程と搬送工程とを備える。組立工程は、例えば、組立部材のうち電極組立体の一部をケース本体内に挿入する第１組立工程と、組立部材に絶縁カバーを組み付ける第２組立工程と、電極組立体、導電部材、及び絶縁カバーをケース本体内に収容するとともに、ケース本体の開口部を蓋によって閉塞する第３組立工程とを備える。また、搬送工程は、第１組立工程で製造されたワーク（ケース本体及び組立部材）を第２組立工程へ搬送する第１搬送工程と、第２組立工程で製造されたワーク（ケース本体、組立部材、及び絶縁カバー）を第３組立工程へ搬送する第２搬送工程とを備える。このような二次電池の製造工程では、二次電池の生産性の向上が望まれている。   By the way, in general, the manufacturing process of the secondary battery includes an assembly process and a transfer process. The assembly process includes, for example, a first assembly process of inserting a part of the electrode assembly in the assembly member into the case body, a second assembly process of assembling the insulating cover to the assembly member, an electrode assembly, a conductive member, And a third assembling step of housing the insulating cover in the case body and closing the opening of the case body with the lid. Also, the transfer step includes a first transfer step of transferring the work (case body and assembly member) manufactured in the first assembly step to the second assembly step, and a work (case body, assembly) manufactured in the second assembly step And a second transfer step of transferring the member and the insulating cover to a third assembly step. In the manufacturing process of such a secondary battery, improvement in productivity of the secondary battery is desired.

本発明は、上記課題を解決するためになされたものであり、その目的は、蓄電装置の生産性を向上できる蓄電装置の製造装置及び蓄電装置の製造方法を提供することにある。   The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a storage device manufacturing apparatus and a storage device manufacturing method capable of improving the productivity of the storage device.

上記問題点を解決するための蓄電装置の製造装置は、正極と負極の電極が絶縁された状態で積層され、かつ前記電極から突出したタブが同じ極性同士で積層されたタブ群を有する電極組立体と、前記電極組立体を収容するケース本体、及び前記ケース本体の開口部を閉塞する板状の蓋を有するケースと、前記蓋に固定され、前記電極組立体と電気を授受する電極端子と、同じ極性の前記タブ群と前記電極端子とを電気的に接続するとともに、前記蓋と、該蓋の内面に対向し、かつ前記タブ群が存在する前記電極組立体のタブ側端面との間に配置された一対の導電部材と、前記蓋と前記導電部材との間に配置され、両者を絶縁する絶縁カバーと、を備え、前記ケース本体は、底壁と前記底壁の縁部から立設する側壁とを有し、前記電極組立体と前記蓋と前記電極端子と前記導電部材とは、組立部材として一体化されている蓄電装置の製造装置であって、前記ケース本体を保持するケース本体保持部、及び前記蓋を保持可能な蓋保持部を有する治具と、前記治具を連続搬送する搬送装置と、前記治具と併走しながら、前記ケース本体保持部に保持された前記ケース本体内に前記組立部材の電極組立体の一部を挿入するアーム部と、前記治具の搬送方向において前記アーム部よりも下流側に配置され、前記治具と併走しながら前記組立部材に対して前記絶縁カバーを組み付けるカバー組付部と、前記治具の搬送方向において前記カバー組付部よりも下流側に配置され、前記治具と併走しながら前記組立部材の前記蓋を保持する組立部材保持部と、前記治具の搬送方向において前記組立部材保持部よりも下流側に配置され、前記治具と併走しながら前記組立部材の前記蓋を前記ケース本体に向けて押圧することで、前記電極組立体、前記導電部材、及び前記絶縁カバーを前記ケース本体内に収容し、前記蓋により前記ケース本体の開口部を閉塞する蓋押圧部と、を備え、前記蓋保持部は、前記電極組立体の一部が前記ケース本体内に挿入されると、前記電極組立体のタブ側端面が前記ケース本体の側壁の先端面よりも上側に位置するように前記蓋を保持する保持位置に移動し、前記組立部材保持部により前記蓋が保持されると、前記蓋を保持しない非保持位置に移動することを要旨とする。   An apparatus for manufacturing a power storage device for solving the above problems is an electrode assembly having a tab group in which electrodes of a positive electrode and a negative electrode are stacked in an insulated state and tabs protruding from the electrodes are stacked in the same polarity. A case having a three-dimensional shape, a case body for accommodating the electrode assembly, and a plate-like lid for closing the opening of the case body; and an electrode terminal fixed to the lid for exchanging electricity with the electrode assembly And electrically connecting the tab group of the same polarity and the electrode terminal, and between the lid and a tab-side end surface of the electrode assembly facing the inner surface of the lid and in which the tab group is present. And an insulating cover disposed between the lid and the conductive member to insulate the two from each other, and the case main body stands from the bottom wall and the edge of the bottom wall. And a side wall to be provided, and the electrode assembly The storage lid, the electrode terminal, and the conductive member are a manufacturing device of a power storage device integrated as an assembly member, and a case main body holding portion for holding the case main body, and a lid holding capable of holding the lid Part of the electrode assembly of the assembly member in the case main body held by the case main body holding part while traveling together with the jig having the part, the conveying device for continuously conveying the jig, and the jig An arm portion for inserting a portion, a cover assembling portion disposed downstream of the arm portion in the conveyance direction of the jig, and assembling the insulating cover to the assembly member while running parallel to the jig; An assembly member holding portion disposed downstream of the cover assembling portion in the conveyance direction of the jig and holding the lid of the assembly member while traveling in parallel with the jig, and the assembly in the conveyance direction of the jig Element The electrode assembly, the conductive member, and the insulating cover are disposed downstream of the holding portion and press the lid of the assembly member toward the case main body while traveling in parallel with the jig. And a lid pressing portion which is housed in the case body and closes the opening of the case body by the lid, and the lid holding portion is configured such that a part of the electrode assembly is inserted into the case body Moving to a holding position for holding the lid such that the tab-side end surface of the electrode assembly is positioned above the tip end surface of the side wall of the case body, and the lid is held by the assembly member holder And moving to a non-holding position where the lid is not held.

これによれば、まず、アーム部が治具と併走することで、搬送装置により治具を連続搬送しながらケース本体内に電極組立体の一部を挿入できる。電極組立体の一部がケース本体内に挿入されると、蓋保持部は保持位置に移動する。このとき、蓋保持部によって保持される蓋と、電極端子、導電部材、及びタブ群を介して蓋に吊り下げられた電極組立体のタブ側端面との間には隙間が存在する。また、電極組立体のタブ側端面はケース本体の側壁の先端面よりも上側に位置するため、蓋とタブ側端面との間の隙間は、ケース本体の側壁により覆われない。つまり、蓋保持部が蓋を保持することによって、組立部材は、蓋と導電部材との間の隙間に絶縁カバーを組み付け可能な状態である。次に、カバー組付部が治具と併走することで、搬送装置により治具を搬送しながら蓋と導電部材との間に絶縁カバーを組み付けることができる。次に、組立部材保持部により蓋が保持されると組立部材が保持されることになる。すると、蓋保持部は非保持位置に移動し、蓋の押圧が可能な状態となる。そして、蓋押圧部が治具と併走することで、搬送装置により治具を搬送しながら蓋を押圧し、ケース本体の開口部を閉塞することができる。つまり、アーム部、カバー組付部、組立部材保持部、及び蓋押圧部が治具と併走するとともに、治具が保持位置と非保持位置とで移動する蓋保持部を備えることで、搬送装置により治具を連続搬送しながら蓄電装置の製造工程の各工程を行うことができる。よって、工程間での搬送時間を短縮でき、蓄電装置の生産性を向上できる。   According to this, first, when the arm portion travels with the jig, a part of the electrode assembly can be inserted into the case main body while continuously conveying the jig by the conveyance device. When a portion of the electrode assembly is inserted into the case body, the lid holding portion moves to the holding position. At this time, a gap is present between the lid held by the lid holder and the tab-side end surface of the electrode assembly suspended by the lid via the electrode terminal, the conductive member, and the tab group. Further, since the tab-side end surface of the electrode assembly is located above the tip end surface of the side wall of the case body, the gap between the lid and the tab-side end surface is not covered by the side wall of the case body. That is, when the lid holding portion holds the lid, the assembly member is in a state where the insulating cover can be assembled in the gap between the lid and the conductive member. Next, when the cover assembling portion runs in parallel with the jig, the insulating cover can be assembled between the lid and the conductive member while the jig is transported by the transport device. Next, when the lid is held by the assembly member holder, the assembly member is held. Then, the lid holding portion moves to the non-holding position, and the lid can be pressed. Then, when the lid pressing portion travels with the jig, the lid can be pressed while transporting the jig by the transport device, and the opening of the case main body can be closed. That is, the arm device, the cover assembling portion, the assembly member holding portion, and the lid pressing portion move along with the jig, and the jig includes the lid holding portion moving between the holding position and the non-holding position. Thus, each step of the manufacturing process of the power storage device can be performed while conveying the jig continuously. Therefore, the conveyance time between processes can be shortened, and the productivity of the power storage device can be improved.

また、上記蓄電装置の製造装置について、前記蓋保持部は、前記保持位置で前記ケース本体の開口部に対して前記蓋を位置決めする位置決め機構を備えるのが好ましい。
これによれば、蓋保持部が位置決め機構を備えるため、位置決め装置を別に設ける必要がなく、蓄電装置の製造装置の大型化を抑制できる。 In the storage device manufacturing apparatus, preferably, the lid holding unit includes a positioning mechanism that positions the lid with respect to the opening of the case main body at the holding position.
According to this, since the lid holding portion includes the positioning mechanism, it is not necessary to separately provide the positioning device, and the enlargement of the manufacturing apparatus of the power storage device can be suppressed.

また、上記蓄電装置の製造装置について、前記治具は、前記ケース本体保持部より外側で前記絶縁カバーを支持するカバー支持部を備え、前記カバー支持部は、前記電極の積層方向から見て、前記蓋の内面と前記電極組立体のタブ側端面との間に重なる位置にあり、前記カバー組付部は、前記カバー支持部に支持された前記絶縁カバーを前記組立部材に向けて押圧するカバー押圧部であるのが好ましい。   In the storage device manufacturing apparatus, the jig includes a cover supporting portion that supports the insulating cover outside the case main body holding portion, and the cover supporting portion is viewed from the stacking direction of the electrodes. A cover which is at a position overlapping between the inner surface of the lid and the tab-side end surface of the electrode assembly, and the cover assembling portion presses the insulating cover supported by the cover supporting portion toward the assembly member It is preferable that it is a pressing part.

これによれば、複数の絶縁カバーが収容された収容部から１つを取り出して組立部材に組み付ける場合と比較して、カバー組付部の構成を簡素化できる。
上記問題点を解決するための蓄電装置の製造方法は、正極と負極の電極が絶縁された状態で積層され、かつ前記電極から突出したタブが同じ極性同士で積層されたタブ群を有する電極組立体と、前記電極組立体を収容するケース本体、及び前記ケース本体の開口部を閉塞する板状の蓋を有するケースと、前記蓋に固定され、前記電極組立体と電気を授受する電極端子と、同じ極性の前記タブ群と前記電極端子とを電気的に接続するとともに、前記蓋と、該蓋の内面に対向し、かつ前記タブ群が存在する前記電極組立体のタブ側端面との間に配置された一対の導電部材と、前記蓋と前記導電部材との間に配置され、両者を絶縁する絶縁カバーと、を備え、前記ケース本体は、底壁と前記底壁の縁部から立設する側壁とを有し、前記電極組立体と前記蓋と前記電極端子と前記導電部材とは、組立部材として一体化されている蓄電装置の製造方法であって、搬送装置によって、前記ケース本体を保持するケース本体保持部、及び前記蓋を保持可能な蓋保持部を有する治具を連続搬送する搬送工程と、前記治具と併走するアーム部が、前記ケース本体保持部に保持された前記ケース本体内に前記組立部材の電極組立体の一部を挿入する電極組立体挿入工程と、前記治具と併走するカバー組付部が、前記組立部材に対して前記絶縁カバーを組み付けるカバー組付工程と、前記治具と併走する組立部材保持部が、前記組立部材の前記蓋を保持する組立部材保持工程と、前記治具と併走する蓋押圧部が、前記組立部材の前記蓋を前記ケース本体に向けて押圧することで、前記電極組立体、前記導電部材、及び前記絶縁カバーを前記ケース本体内に収容し、前記蓋により前記ケース本体の開口部を閉塞する蓋押圧工程と、を備え、前記蓋保持部は、前記電極組立体の一部が前記ケース本体内に挿入されると、前記電極組立体のタブ側端面が前記ケース本体の側壁の先端面よりも上側に位置するように前記蓋を保持する保持位置に移動し、前記組立部材保持部により前記蓋が保持されると、前記蓋を保持しない非保持位置に移動することを要旨とする。 According to this, the configuration of the cover assembling portion can be simplified as compared with the case where one is taken out from the accommodating portion in which the plurality of insulating covers are accommodated and assembled to the assembly member.
A method of manufacturing a power storage device for solving the above problems is an electrode assembly having a tab group in which electrodes of a positive electrode and a negative electrode are stacked in an insulated state, and tabs protruding from the electrodes are stacked with the same polarity. A case having a three-dimensional shape, a case body for accommodating the electrode assembly, and a plate-like lid for closing the opening of the case body; and an electrode terminal fixed to the lid for exchanging electricity with the electrode assembly And electrically connecting the tab group of the same polarity and the electrode terminal, and between the lid and a tab-side end surface of the electrode assembly facing the inner surface of the lid and in which the tab group is present. And an insulating cover disposed between the lid and the conductive member to insulate the two from each other, and the case main body stands from the bottom wall and the edge of the bottom wall. And a side wall to be provided, and the electrode assembly The storage lid, the electrode terminal, and the conductive member are a method of manufacturing a power storage device integrated as an assembly member, and a transport device holds a case main body holding portion for holding the case main body, and the lid. A conveying step of continuously conveying a jig having a movable lid holding portion, and an electrode assembly of the assembly member in the case main body in which an arm portion co-traveling with the jig is held by the case main body holding portion An electrode assembly inserting step of inserting the head, a cover assembling step of assembling the insulating cover to the assembling member, a cover assembling step of moving the insulating jig together with the jig, and an assembling member holding portion moving together with the jig And an assembly member holding step of holding the lid of the assembly member, and a lid pressing portion co-traveling with the jig pressing the lid of the assembly member toward the case main body, the electrode assembly , Said conductive And a cover pressing step of housing the insulating cover in the case main body and closing the opening of the case main body with the cover, and the cover holding portion is a part of the electrode assembly. When inserted into the case main body, it moves to a holding position for holding the lid so that the tab side end face of the electrode assembly is located above the tip end face of the side wall of the case main body, and the assembly member holder When the lid is held by the movement of the lid, the lid is moved to a non-holding position where the lid is not held.

これによれば、アーム部、カバー組付部、組立部材保持部、及び蓋押圧部が治具と併走するとともに、治具が保持位置と非保持位置とで移動する蓋保持部を備えることで、搬送装置により治具を連続搬送しながら、電極組立体挿入工程、カバー組付工程、組立部材保持工程、及び蓋押圧工程を行うことができる。よって、工程間での搬送時間を短縮でき、蓄電装置の生産性を向上できる。   According to this, the arm portion, the cover assembly portion, the assembly member holding portion, and the lid pressing portion move along with the jig, and the jig is provided with the lid holding portion which moves between the holding position and the non-holding position. The electrode assembly inserting step, the cover assembling step, the assembly member holding step, and the lid pressing step can be performed while continuously conveying the jig by the conveying device. Therefore, the conveyance time between processes can be shortened, and the productivity of the power storage device can be improved.

また、上記蓄電装置の製造方法について、前記蓋は、前記保持位置にある前記蓋保持部に保持されることで、前記ケース本体の開口部に対して位置決めされるのが好ましい。
これによれば、蓋の位置決め工程を別に設ける必要がなく、蓄電装置の生産性をより向上できる。 In the method of manufacturing the power storage device, preferably, the lid is positioned with respect to the opening of the case main body by being held by the lid holding portion in the holding position.
According to this, it is not necessary to separately provide the lid positioning step, and the productivity of the power storage device can be further improved.

また、上記蓄電装置の製造方法について、前記治具は、前記ケース本体保持部より外側で前記絶縁カバーを支持するカバー支持部を備え、前記カバー支持部は、前記電極の積層方向から見て、前記蓋の内面と前記電極組立体のタブ側端面との間に重なる位置にあり、前記カバー組付工程では、前記カバー支持部に支持された前記絶縁カバーを前記組立部材に向けて押圧するのが好ましい。   Further, in the method of manufacturing the power storage device, the jig includes a cover supporting portion that supports the insulating cover outside the case main body holding portion, and the cover supporting portion is viewed from the stacking direction of the electrodes. The cover assembly step includes pressing the insulating cover supported by the cover supporting portion toward the assembly member in the overlapping position between the inner surface of the lid and the tab-side end surface of the electrode assembly. Is preferred.

これによれば、カバー組付工程は、絶縁カバーを組立部材に向けて押圧するだけで完了するため、例えば、ロボットアームが絶縁カバーの収容部から１つの絶縁カバーを取り出し、組立部材に組み付ける場合と比較して、カバー組付工程に要する時間を短縮できる。   According to this, since the cover assembling step is completed only by pressing the insulating cover toward the assembling member, for example, when the robot arm takes out one insulating cover from the housing portion of the insulating cover and assembles it to the assembling member As compared with the above, the time required for the cover assembling process can be shortened.

本発明によれば、蓄電装置の生産性を向上できる。   According to the present invention, the productivity of the power storage device can be improved.

実施形態の二次電池の分解斜視図。The disassembled perspective view of the secondary battery of embodiment. （ａ），（ｂ）は二次電池の断面図。(A), (b) is sectional drawing of a secondary battery. 二次電池及び治具を示す斜視図。FIG. 2 is a perspective view showing a secondary battery and a jig. 二次電池の製造工程を示す平面図。FIG. 7 is a plan view showing the manufacturing process of the secondary battery. （ａ）〜（ｃ）は電極組立体挿入工程を示す斜視図。(A)-(c) is a perspective view which shows an electrode assembly insertion process. （ａ）は第１絶縁カバー組付工程を示す斜視図、（ｂ）は第２絶縁カバー組付工程を示す斜視図。(A) is a perspective view which shows a 1st insulation cover assembly process, (b) is a perspective view which shows a 2nd insulation cover assembly process. （ａ）〜（ｃ）は蓋押圧工程を示す斜視図。(A)-(c) is a perspective view which shows lid pressing process.

以下、蓄電装置の製造装置及び蓄電装置の製造方法を、二次電池の製造装置及び二次電池の製造方法に具体化した一実施形態を図１〜図７にしたがって説明する。
まず、本実施形態の二次電池の製造装置及び製造方法によって製造される二次電池について説明する。 Hereinafter, one embodiment in which a storage device manufacturing apparatus and a storage device manufacturing method are embodied in a secondary battery manufacturing device and a secondary battery manufacturing method will be described according to FIGS. 1 to 7.
First, the secondary battery manufactured by the manufacturing apparatus and manufacturing method of the secondary battery of this embodiment is demonstrated.

図１に示すように、蓄電装置としての二次電池１０は、ケース１１を備える。二次電池１０は、ケース１１に収容された電極組立体１２を備える。ケース１１は、直方体状のケース本体１３と、ケース本体１３の開口部１３ａを閉塞する矩形平板状の蓋１４とを有する。ケース１１を構成するケース本体１３と蓋１４は、何れも金属製（例えば、ステンレスやアルミニウム）である。また、本実施形態の二次電池１０は、その外観が角型をなす角型電池である。また、本実施形態の二次電池１０は、リチウムイオン電池である。   As shown in FIG. 1, a secondary battery 10 as a power storage device includes a case 11. The secondary battery 10 includes an electrode assembly 12 housed in a case 11. The case 11 has a rectangular parallelepiped case body 13 and a rectangular flat lid 14 closing the opening 13 a of the case body 13. The case main body 13 and the lid 14 constituting the case 11 are both made of metal (for example, stainless steel or aluminum). Moreover, the secondary battery 10 of the present embodiment is a square battery whose appearance is square. In addition, the secondary battery 10 of the present embodiment is a lithium ion battery.

ケース本体１３は、矩形板状の底壁１３ｂと、底壁１３ｂの一対の長側縁部から立設された側壁としての長側壁１３ｃと、底壁１３ｂの一対の短側縁部から立設された側壁としての短側壁１３ｄとを有する。以下、底壁１３ｂから長側壁１３ｃ及び短側壁１３ｄが立設する方向を立設方向という。蓋１４において、ケース１１の内側に臨む面を内面としての下面１４ａとし、ケース１１の外側に臨む面を上面１４ｂとする。蓋１４によってケース本体１３の開口部１３ａが閉塞された状態では、蓋１４の下面１４ａは、長側壁１３ｃ及び短側壁１３ｄの立設方向の先端面１３ｅに接触している。   The case body 13 has a rectangular plate-like bottom wall 13b, a long side wall 13c as a side wall provided upright from a pair of long side edges of the bottom wall 13b, and a pair of short side edges of the bottom wall 13b And a short side wall 13d as a side wall. Hereinafter, the direction in which the long side wall 13c and the short side wall 13d stand from the bottom wall 13b is referred to as a standing direction. In the lid 14, a surface facing the inside of the case 11 is a lower surface 14 a as an inner surface, and a surface facing the outside of the case 11 is an upper surface 14 b. In a state in which the opening 13a of the case body 13 is closed by the lid 14, the lower surface 14a of the lid 14 is in contact with the tip surface 13e in the erecting direction of the long side wall 13c and the short side wall 13d.

図２（ａ）に示すように、電極組立体１２は、シート状の複数の正極の電極としての正極電極２０と、シート状の複数の負極の電極としての負極電極２１と、シート状の複数のセパレータ２２とを備える。電極組立体１２は、正極電極２０と負極電極２１との間にセパレータ２２を介在させ、かつ相互に絶縁させた状態で積層した層状構造を備える。   As shown in FIG. 2A, the electrode assembly 12 includes a plurality of positive electrodes 20 as a plurality of sheet-like positive electrodes, a plurality of negative electrodes 21 as a plurality of sheet-like negative electrodes, and a plurality of sheet-like electrodes. And the separator 22 of FIG. The electrode assembly 12 has a layered structure in which a separator 22 is interposed between the positive electrode 20 and the negative electrode 21 and laminated in a state of being insulated from each other.

正極電極２０は、矩形シート状の正極金属箔（例えばアルミニウム箔）２３と、正極金属箔２３の両面に存在する正極活物質層２４とを有する。正極電極２０は、一対の長辺に沿う縁部のうちの一方の縁部にタブ側縁部２０ａを備える。正極電極２０は、タブ側縁部２０ａの一部から突出した形状のタブとしての正極タブ２５を有する（図１参照）。正極タブ２５は、正極活物質層２４が存在せず、正極金属箔２３そのもので構成されている。   The positive electrode 20 has a rectangular sheet-like positive metal foil (for example, aluminum foil) 23 and a positive electrode active material layer 24 present on both sides of the positive metal foil 23. The positive electrode 20 includes a tab side edge 20 a at one of the edges along the pair of long sides. The positive electrode 20 has a positive electrode tab 25 as a tab having a shape protruding from a part of the tab side edge 20a (see FIG. 1). The positive electrode tab 25 does not have the positive electrode active material layer 24 and is made of the positive electrode metal foil 23 itself.

負極電極２１は、矩形シート状の負極金属箔（例えば銅箔）２６と、負極金属箔２６の両面に存在する負極活物質層２７とを有する。負極電極２１は、一対の長辺に沿う縁部のうちの一方の縁部にタブ側縁部２１ａを備える。負極電極２１は、タブ側縁部２１ａの一部から突出した形状のタブとしての負極タブ２８を有する。負極タブ２８は、負極活物質層２７が存在せず、負極金属箔２６そのもので構成されている。複数の正極タブ２５及び負極タブ２８は、正極電極２０及び負極電極２１が積層された状態で、正極タブ２５と負極タブ２８とが重ならない位置に存在する。セパレータ２２は、絶縁性を有し、正極電極２０と負極電極２１とを絶縁する。正極電極２０、負極電極２１、及びセパレータ２２が積層された方向を電極組立体１２の積層方向とする。   The negative electrode 21 has a rectangular sheet-like negative electrode metal foil (for example, copper foil) 26 and a negative electrode active material layer 27 present on both sides of the negative electrode metal foil 26. The negative electrode 21 includes a tab side edge 21 a at one of the edges along the pair of long sides. The negative electrode 21 has a negative electrode tab 28 as a tab having a shape protruding from a part of the tab side edge 21 a. The negative electrode tab 28 does not have the negative electrode active material layer 27 and is made of the negative electrode metal foil 26 itself. The plurality of positive electrode tabs 25 and the negative electrode tabs 28 exist at positions where the positive electrode tabs 25 and the negative electrode tabs 28 do not overlap in a state where the positive electrode 20 and the negative electrode 21 are stacked. The separator 22 has an insulating property, and insulates the positive electrode 20 from the negative electrode 21. The direction in which the positive electrode 20, the negative electrode 21, and the separator 22 are stacked is referred to as the stacking direction of the electrode assembly 12.

電極組立体１２は、タブ側端面１２ａを備える。タブ側端面１２ａは、正極電極２０のタブ側縁部２０ａ、負極電極２１のタブ側縁部２１ａ、及びセパレータ２２の縁部を寄せ集めて形成されている。電極組立体１２を構成する各正極電極２０は、それぞれの正極タブ２５が積層方向に沿って列状に配置されるように積層される。同様に、電極組立体１２を構成する各負極電極２１は、それぞれの負極タブ２８が積層方向に沿って列状に配置されるように積層される。   The electrode assembly 12 includes a tab end surface 12a. The tab side end face 12 a is formed by gathering together the tab side edge 20 a of the positive electrode 20, the tab side edge 21 a of the negative electrode 21, and the edge of the separator 22. The positive electrodes 20 constituting the electrode assembly 12 are stacked such that the positive tabs 25 are arranged in a row along the stacking direction. Similarly, the negative electrodes 21 constituting the electrode assembly 12 are stacked such that the negative tabs 28 are arranged in a row along the stacking direction.

二次電池１０は、タブ側端面１２ａから突出した正極タブ群２５ａを有する。正極タブ群２５ａは、全ての正極タブ２５を電極組立体１２における積層方向の一端側に寄せ集め、積層して構成されている。また、二次電池１０は、タブ側端面１２ａから突出した負極タブ群２８ａを有する。負極タブ群２８ａは、全ての負極タブ２８を電極組立体１２における積層方向の一端側に寄せ集め、積層して構成されている。   The secondary battery 10 has a positive electrode tab group 25a protruding from the tab side end face 12a. The positive electrode tab group 25 a is configured by gathering all the positive electrode tabs 25 toward one end side in the stacking direction of the electrode assembly 12 and stacking them. The secondary battery 10 also has a negative electrode tab group 28 a that protrudes from the tab side end surface 12 a. The negative electrode tab group 28 a is configured by gathering all the negative electrode tabs 28 to one end side in the stacking direction of the electrode assembly 12 and stacking them.

正極タブ群２５ａ及び負極タブ群２８ａは、それぞれ積層方向一端側に基端側曲げ部２９ａを備える。基端側曲げ部２９ａは、正極タブ群２５ａ及び負極タブ群２８ａにおいて、積層方向一端側に寄せ集められ、積層方向一端側から積層方向他端側に向けて曲げられた部分を含む。また、正極タブ群２５ａ及び負極タブ群２８ａは、それぞれ延出部２９ｂを備える。延出部２９ｂは、基端側曲げ部２９ａから電極組立体１２の積層方向に延びる部分である。正極タブ群２５ａ及び負極タブ群２８ａは、それぞれ延出部２９ｂより先端側に、積層方向他端側から積層方向一端側に向けて曲げられた先端側曲げ部２９ｃを備える。   The positive electrode tab group 25a and the negative electrode tab group 28a each have a base end side bent portion 29a on one end side in the stacking direction. The proximal bent portion 29a includes a portion of the positive electrode tab group 25a and the negative electrode tab group 28a that is gathered to one end side in the stacking direction and bent from one end side in the stacking direction toward the other end side in the stacking direction. The positive electrode tab group 25a and the negative electrode tab group 28a each include an extension 29b. The extending portion 29 b is a portion extending from the proximal bending portion 29 a in the stacking direction of the electrode assembly 12. The positive electrode tab group 25a and the negative electrode tab group 28a each include a front end side bent portion 29c that is bent from the other end side in the stacking direction toward the one end side in the stacking direction on the front end side from the extension portion 29b.

図１に示すように、二次電池１０は、電極組立体１２と電気を授受する電極端子としての正極端子１５及び負極端子１６を備える。正極端子１５及び負極端子１６はそれぞれ、蓋１４に固定されている。正極端子１５は、正極の引出端子１９ａを備え、負極端子１６は、負極の引出端子１９ａを備える。各引出端子１９ａは、蓋１４の上面１４ｂより外側に突出している。正極の引出端子１９ａは、正極の導電部材１７と接合され、正極の導電部材１７は、正極タブ群２５ａと接合されている。これにより、正極端子１５は、正極の導電部材１７及び正極タブ群２５ａを介して電極組立体１２と電気的に接続されている。同様に、負極の引出端子１９ａは、負極の導電部材１７と接合され、負極の導電部材１７は、負極タブ群２８ａと接合されている。これにより、負極端子１６は、負極の導電部材１７及び負極タブ群２８ａを介して電極組立体１２と電気的に接続されている。各導電部材１７は、蓋１４の下面１４ａと電極組立体１２のタブ側端面１２ａとの間に配置されている。   As shown in FIG. 1, the secondary battery 10 includes a positive electrode terminal 15 and a negative electrode terminal 16 as electrode terminals that exchange electricity with the electrode assembly 12. The positive electrode terminal 15 and the negative electrode terminal 16 are each fixed to the lid 14. The positive electrode terminal 15 includes a positive electrode extraction terminal 19a, and the negative electrode terminal 16 includes a negative electrode extraction terminal 19a. Each leadout terminal 19 a protrudes outside the upper surface 14 b of the lid 14. The positive electrode lead terminal 19a is joined to the positive electrode conductive member 17, and the positive electrode conductive member 17 is joined to the positive electrode tab group 25a. Thus, the positive electrode terminal 15 is electrically connected to the electrode assembly 12 through the conductive member 17 of the positive electrode and the positive electrode tab group 25a. Similarly, the negative electrode lead-out terminal 19a is joined to the negative electrode conductive member 17, and the negative electrode conductive member 17 is joined to the negative electrode tab group 28a. Thereby, the negative electrode terminal 16 is electrically connected to the electrode assembly 12 through the conductive member 17 of the negative electrode and the negative electrode tab group 28a. Each conductive member 17 is disposed between the lower surface 14 a of the lid 14 and the tab-side end surface 12 a of the electrode assembly 12.

正極端子１５及び負極端子１６はそれぞれ、蓋１４の上面１４ｂで引出端子１９ａと電気的に接続された端子接続部材１９ｂと、蓋１４の外側で端子接続部材１９ｂと電気的に接続された外部接続端子１９ｃを備える。正極端子１５及び負極端子１６は、端子接続部材１９ｂ及び外部接続端子１９ｃを蓋１４から絶縁する外側絶縁部材１９ｄを蓋１４の上面１４ｂに備える。   The positive electrode terminal 15 and the negative electrode terminal 16 respectively have a terminal connection member 19 b electrically connected to the lead terminal 19 a on the upper surface 14 b of the lid 14 and an external connection electrically connected to the terminal connection member 19 b outside the lid 14 A terminal 19c is provided. The positive electrode terminal 15 and the negative electrode terminal 16 are provided on the top surface 14 b of the lid 14 with an outer insulating member 19 d which insulates the terminal connection member 19 b and the external connection terminal 19 c from the lid 14.

電極組立体１２と蓋１４は、正極端子１５、負極端子１６、及び導電部材１７を介して一体化されている。以下、電極組立体１２、蓋１４、正極端子１５、負極端子１６、及び導電部材１７が一体化されたものを組立部材Ｗとする。   The electrode assembly 12 and the lid 14 are integrated via the positive electrode terminal 15, the negative electrode terminal 16, and the conductive member 17. Hereinafter, an assembly in which the electrode assembly 12, the lid 14, the positive electrode terminal 15, the negative electrode terminal 16, and the conductive member 17 are integrated is referred to as an assembly member W.

図１、図２（ａ）、及び図２（ｂ）に示すように、二次電池１０は、ケース１１内において、電極組立体１２のタブ側端面１２ａと蓋１４の下面１４ａとの間に位置する矩形状の絶縁カバー３０を備える。絶縁カバー３０は、樹脂製である。図２（ａ）に示すように、絶縁カバー３０は、導電部材１７に対し、正極タブ群２５ａ及び負極タブ群２８ａの先端側曲げ部２９ｃ側から装着された絶縁カバーとしての第１絶縁カバー３０ａと、正極タブ群２５ａ及び負極タブ群２８ａの基端側曲げ部２９ａ側から装着された絶縁カバーとしての第２絶縁カバー３０ｂとから構成される。   As shown in FIGS. 1, 2 (a) and 2 (b), in the case 11, the secondary battery 10 is located between the tab-side end surface 12 a of the electrode assembly 12 and the lower surface 14 a of the lid 14. A rectangular insulating cover 30 is provided. The insulating cover 30 is made of resin. As shown in FIG. 2A, the insulating cover 30 is a first insulating cover 30a as an insulating cover attached to the conductive member 17 from the side of the front end side bent portion 29c of the positive electrode tab group 25a and the negative electrode tab group 28a. And a second insulating cover 30b as an insulating cover mounted from the side of the base end side bent portion 29a of the positive electrode tab group 25a and the negative electrode tab group 28a.

第１絶縁カバー３０ａは、矩形板状の第１部位３１と、矩形板状の第２部位３２と、第１部位３１の長手方向に沿う一辺と第２部位３２の長手方向に沿う一辺とを接続する第３部位３３とを備える。第１絶縁カバー３０ａは、第１部位３１及び第２部位３２の面が蓋１４の下面１４ａと沿うように配置される。   The first insulating cover 30 a has a rectangular plate-shaped first portion 31, a rectangular plate-shaped second portion 32, one side along the longitudinal direction of the first portion 31 and one side along the longitudinal direction of the second portion 32. And a third portion 33 to be connected. The first insulating cover 30 a is disposed such that the surfaces of the first portion 31 and the second portion 32 are along the lower surface 14 a of the lid 14.

図２（ａ）に示すように、第１部位３１は、蓋１４の下面１４ａと導電部材１７との間に配置されている。第１部位３１は、導電部材１７に支持されている。第１部位３１は、電極組立体１２のタブ側端面１２ａと対向する対向面から電極組立体１２側に突出したリブ３４を備える。リブ３４は、蓋１４側に凹む形状の係止凹部３４ａを備える。   As shown in FIG. 2A, the first portion 31 is disposed between the lower surface 14 a of the lid 14 and the conductive member 17. The first portion 31 is supported by the conductive member 17. The first portion 31 includes a rib 34 protruding toward the electrode assembly 12 from an opposite surface facing the tab-side end surface 12 a of the electrode assembly 12. The rib 34 includes a locking recess 34 a having a shape recessed toward the lid 14.

第２部位３２は、電極組立体１２のタブ側端面１２ａと、正極タブ群２５ａ及び負極タブ群２８ａの先端側曲げ部２９ｃとの間に位置する。第２部位３２は、先端側曲げ部２９ｃを電極組立体１２側から覆う。先端側曲げ部２９ｃは、導電部材１７と、第２部位３２と、第３部位３３とで区画された隙間に入り込んだ状態にある。   The second portion 32 is located between the tab-side end surface 12 a of the electrode assembly 12 and the tip-side bent portion 29 c of the positive electrode tab group 25 a and the negative electrode tab group 28 a. The second portion 32 covers the distal end side bent portion 29c from the electrode assembly 12 side. The distal end side bent portion 29 c is in a state of being intruded into a gap partitioned by the conductive member 17, the second portion 32 and the third portion 33.

図１及び図２（ｂ）に示すように、第２部位３２の長手方向の寸法は、第１部位３１の長手方向の寸法よりも長い。第２部位３２は、長手方向の一端側に負極絶縁部３５を備え、長手方向の他端側に正極絶縁部３６を備える。負極絶縁部３５は、負極端子１６における引出端子１９ａとタブ側端面１２ａとの間に位置し、負極端子１６と電極組立体１２とを絶縁する。正極絶縁部３６は、正極端子１５における引出端子１９ａとタブ側端面１２ａとの間に位置し、正極端子１５と電極組立体１２とを絶縁する。   As shown in FIGS. 1 and 2 (b), the dimension in the longitudinal direction of the second portion 32 is longer than the dimension in the longitudinal direction of the first portion 31. The second portion 32 includes the negative electrode insulating portion 35 on one end side in the longitudinal direction, and the positive electrode insulating portion 36 on the other end side in the longitudinal direction. The negative electrode insulating portion 35 is located between the lead terminal 19 a of the negative electrode terminal 16 and the tab-side end surface 12 a, and insulates the negative electrode terminal 16 from the electrode assembly 12. The positive electrode insulating portion 36 is located between the lead terminal 19 a and the tab end surface 12 a of the positive electrode terminal 15, and insulates the positive electrode terminal 15 from the electrode assembly 12.

第３部位３３は、正極タブ群２５ａ及び負極タブ群２８ａの先端側曲げ部２９ｃを外側から覆う。第３部位３３は、積層方向において、正極タブ群２５ａ及び負極タブ群２８ａの積層方向他端と、ケース本体１３の長側壁１３ｃの内面との間に位置し、先端側曲げ部２９ｃとケース本体１３とを絶縁する。   The third portion 33 covers the front end side bent portion 29c of the positive electrode tab group 25a and the negative electrode tab group 28a from the outside. The third portion 33 is located between the other end of the positive electrode tab group 25a and the negative electrode tab group 28a in the stacking direction and the inner surface of the long side wall 13c of the case main body 13, and has the distal end side bent portion 29c and the case main body Insulate from 13.

図１及び図２（ａ）に示すように、第２絶縁カバー３０ｂは、矩形状の第１部位３７と、第１部位３７の長手方向に沿う一辺から電極組立体１２に向けて立設された第２部位３８とを備える。   As shown in FIGS. 1 and 2 (a), the second insulating cover 30b is erected toward the electrode assembly 12 from the rectangular first portion 37 and one side along the longitudinal direction of the first portion 37. And a second portion 38.

第１部位３７は、蓋１４の下面１４ａと導電部材１７との間に配置されている。第１部位３７は、第１絶縁カバー３０ａに向けて突出した形状の係止用突出部３９を備える。係止用突出部３９は、先端部に係止爪３９ａを備える。係止爪３９ａは、第１絶縁カバー３０ａの係止凹部３４ａに係止可能である。   The first portion 37 is disposed between the lower surface 14 a of the lid 14 and the conductive member 17. The first portion 37 includes a locking protrusion 39 having a shape protruding toward the first insulating cover 30 a. The locking projection 39 has a locking claw 39a at its tip. The locking claw 39a can be locked to the locking recess 34a of the first insulating cover 30a.

図２（ａ）に示すように、第２部位３８は、正極タブ群２５ａ及び負極タブ群２８ａの基端側曲げ部２９ａを外側から覆う。第２部位３８は、積層方向において、正極タブ群２５ａ及び負極タブ群２８ａの積層方向一端と、ケース本体１３の長側壁１３ｃの内面との間に位置し、基端側曲げ部２９ａとケース本体１３とを絶縁する。   As shown in FIG. 2A, the second portion 38 covers the base end side bent portion 29a of the positive electrode tab group 25a and the negative electrode tab group 28a from the outside. The second portion 38 is located between one end of the positive electrode tab group 25a and the negative electrode tab group 28a in the stacking direction and the inner surface of the long side wall 13c of the case main body 13 in the stacking direction. Insulate from 13.

第１絶縁カバー３０ａと第２絶縁カバー３０ｂとは、第１絶縁カバー３０ａの係止凹部３４ａに第２絶縁カバー３０ｂの係止爪３９ａが係止されることで一体に組み付けられ、絶縁カバー３０は矩形状のカバー部材となる。   The first insulating cover 30a and the second insulating cover 30b are assembled integrally by the locking claw 39a of the second insulating cover 30b being locked in the locking recess 34a of the first insulating cover 30a. Is a rectangular cover member.

次に、二次電池の製造装置について説明する。
図３に示すように、二次電池の製造装置５０は、治具５１を備える。治具５１は、台座部５２と、ケース本体１３を保持するケース本体保持部５３と、蓋１４を保持可能な蓋保持機構５４と、絶縁カバー３０を支持するカバー支持部５５とを備える。 Next, an apparatus for manufacturing a secondary battery will be described.
As shown in FIG. 3, the secondary battery manufacturing apparatus 50 includes a jig 51. The jig 51 includes a pedestal portion 52, a case main body holding portion 53 for holding the case main body 13, a lid holding mechanism 54 capable of holding the lid 14, and a cover support portion 55 for supporting the insulating cover 30.

台座部５２は、矩形板状である。台座部５２は、上面における一対の短縁部から立設する第１枠部５２ａを備える。また、台座部５２は、上面における一対の長縁部のうち一方の長縁部から立設する第２枠部５２ｂを備える。   The pedestal 52 has a rectangular plate shape. The pedestal portion 52 includes a first frame portion 52a erected from a pair of short edges on the top surface. Further, the pedestal portion 52 includes a second frame portion 52b erected from one long edge portion of the pair of long edge portions on the upper surface.

ケース本体保持部５３は、台座部５２の上面から立設する４つの壁部から構成されている。ケース本体保持部５３は、ケース本体１３の長手方向と台座部５２の長手方向とが一致するように、ケース本体１３を保持する。４つの壁部のうち第１壁部５３ａは、ケース本体１３の一方の長側壁１３ｃの一部及び一方の短側壁１３ｄの一部に沿うＬ字状である。第２壁部５３ｂは、ケース本体１３の一方の長側壁１３ｃの一部及び他方の短側壁１３ｄの一部に沿うＬ字状である。第３壁部５３ｃは、ケース本体１３の他方の長側壁１３ｃの一部及び一方の短側壁１３ｄの一部に沿うＬ字状である。第４壁部（図示せず）は、ケース本体１３の他方の長側壁１３ｃの一部及び他方の短側壁１３ｄの一部に沿うＬ字状である。台座部５２（ケース本体１３）の短手方向において、第１壁部５３ａと第３壁部５３ｃとの間には隙間が存在するとともに、第２壁部５３ｂと第４壁部との間には隙間が存在する。同様に、台座部５２（ケース本体１３）の長手方向において、第１壁部５３ａと第２壁部５３ｂとの間には隙間が存在するとともに、第３壁部５３ｃと第４壁部との間には隙間が存在する。   The case main body holding portion 53 is composed of four wall portions erected from the upper surface of the pedestal portion 52. The case main body holding portion 53 holds the case main body 13 such that the longitudinal direction of the case main body 13 and the longitudinal direction of the pedestal portion 52 coincide with each other. Among the four wall portions, the first wall portion 53a is L-shaped along a part of one long side wall 13c of the case main body 13 and a part of one short side wall 13d. The second wall 53 b has an L shape along a portion of one of the long side walls 13 c of the case main body 13 and a portion of the other short side wall 13 d. The third wall 53 c has an L shape along a part of the other long side wall 13 c of the case main body 13 and a part of the one short side wall 13 d. The fourth wall (not shown) is L-shaped along a portion of the other long side wall 13 c of the case main body 13 and a portion of the other short side wall 13 d. There is a gap between the first wall 53a and the third wall 53c in the short direction of the pedestal 52 (case body 13), and a space between the second wall 53b and the fourth wall There is a gap. Similarly, in the longitudinal direction of the pedestal 52 (case main body 13), there is a gap between the first wall 53a and the second wall 53b, and the third wall 53c and the fourth wall There is a gap between them.

台座部５２の長手方向において、一方の短側壁１３ｄと対向する第１壁部５３ａの内面と、他方の短側壁１３ｄと対向する第２壁部５３ｂの内面との距離は、ケース本体１３の長手方向の寸法よりも僅かに長い。同様に、一方の短側壁１３ｄと対向する第３壁部５３ｃの内面と、他方の短側壁１３ｄと対向する第４壁部の内面との距離は、ケース本体１３の長手方向の寸法よりも僅かに長い。また、台座部５２の短手方向において、一方の長側壁１３ｃと対向する第１壁部５３ａの内面と、他方の長側壁１３ｃと対向する第３壁部５３ｃの内面との距離は、ケース本体１３の短手方向の寸法よりも僅かに長い。同様に、一方の長側壁１３ｃと対向する第２壁部５３ｂの内面と、他方の長側壁１３ｃと対向する第４壁部の内面との距離は、ケース本体１３の短手方向の寸法よりも僅かに長い。そして、ケース本体１３がケース本体保持部５３によって支持されているとき、第１〜第４壁部の上端面はそれぞれ、ケース本体１３の長側壁１３ｃ及び短側壁１３ｄの先端面１３ｅと同一平面上に位置する。   In the longitudinal direction of the pedestal 52, the distance between the inner surface of the first wall 53a facing one short sidewall 13d and the inner surface of the second wall 53b opposite the other short sidewall 13d is the length of the case body 13 Slightly longer than the dimension of the direction. Similarly, the distance between the inner surface of the third wall 53c facing the one short side wall 13d and the inner surface of the fourth wall facing the other short side wall 13d is slightly smaller than the dimension in the longitudinal direction of the case main body 13 Long. The distance between the inner surface of the first wall 53a facing the one long side wall 13c and the inner surface of the third wall 53c facing the other long side wall 13c in the short direction of the pedestal 52 is the case main body Slightly longer than the 13 transverse dimensions. Similarly, the distance between the inner surface of the second wall 53b opposite to the one long side wall 13c and the inner surface of the fourth wall opposite to the other long side wall 13c is greater than the dimension in the short direction of the case body 13 Slightly longer. When the case body 13 is supported by the case body holding portion 53, the upper end surfaces of the first to fourth wall portions are flush with the end surface 13e of the long side wall 13c and the short side wall 13d of the case body 13, respectively. Located in

蓋保持機構５４は、蓋１４の長手方向の一端部を保持する蓋保持部としての第１蓋保持部５６ａと、蓋１４の長手方向の他端部を保持する蓋保持部としての第２蓋保持部５６ｂとを備える。第１蓋保持部５６ａ及び第２蓋保持部５６ｂはそれぞれ、台座部５２の上面に沿って配置される板状の底部５６ｃと、底部５６ｃから立設する延出部５６ｄとを有する。ケース本体１３の底壁１３ｂは、底部５６ｃに支持される。底部５６ｃは、ケース本体１３の底壁１３ｂ及び台座部５２の上面に対して台座部５２の長手方向にスライド可能に支持されている。   The lid holding mechanism 54 includes a first lid holding portion 56a as a lid holding portion for holding one end of the lid 14 in the longitudinal direction and a second lid as a lid holding portion for holding the other end of the lid 14 in the longitudinal direction. And a holding unit 56b. Each of the first lid holding portion 56 a and the second lid holding portion 56 b has a plate-like bottom portion 56 c disposed along the top surface of the pedestal portion 52 and an extension portion 56 d standing from the bottom portion 56 c. The bottom wall 13b of the case body 13 is supported by the bottom 56c. The bottom portion 56 c is slidably supported in the longitudinal direction of the pedestal portion 52 with respect to the bottom wall 13 b of the case main body 13 and the upper surface of the pedestal portion 52.

第１蓋保持部５６ａ及び第２蓋保持部５６ｂはそれぞれ、延出部５６ｄの立設方向の先端部に第１〜第３保持片５６ｅ〜５６ｇを備える。第１〜第３保持片５６ｅ〜５６ｇは、ケース本体１３の開口部１３ａに対し、蓋１４を位置決めする蓋１４の位置決め機構を兼ねる。第１保持片５６ｅは、延出部５６ｄの先端に一体の矩形板状であり、第１保持片５６ｅの長手は、台座部５２の短手方向に延びる。第２保持片５６ｆは、第１保持片５６ｅの長手方向の一端部から台座部５２の長手方向に延びる。第３保持片５６ｇは、第１保持片５６ｅの長手方向の他端部から台座部５２の長手方向に延びる。第１保持片５６ｅから第２保持片５６ｆが延びる向きと、第１保持片５６ｅから第３保持片５６ｇが延びる向きは同じである。つまり、第１蓋保持部５６ａ及び第２蓋保持部５６ｂは、平面視でコ字状をなす。台座部５２の短手方向において、第１蓋保持部５６ａの第２保持片５６ｆの内面と第３保持片５６ｇの内面との距離は、蓋１４の短手方向の寸法とほぼ同じであり、第２蓋保持部５６ｂの第２保持片５６ｆの内面と第３保持片５６ｇの内面との距離は、蓋１４の短手方向の寸法とほぼ同じである。   The first lid holding portion 56a and the second lid holding portion 56b are respectively provided with first to third holding pieces 56e to 56g at tip end portions in the standing direction of the extending portion 56d. The first to third holding pieces 56 e to 56 g also serve as a positioning mechanism of the lid 14 for positioning the lid 14 with respect to the opening 13 a of the case main body 13. The first holding piece 56 e has a rectangular plate shape integral with the tip of the extending portion 56 d, and the length of the first holding piece 56 e extends in the lateral direction of the pedestal 52. The second holding piece 56f extends in the longitudinal direction of the pedestal 52 from one end of the first holding piece 56e in the longitudinal direction. The third holding piece 56g extends in the longitudinal direction of the pedestal 52 from the other end in the longitudinal direction of the first holding piece 56e. The direction in which the second holding piece 56f extends from the first holding piece 56e is the same as the direction in which the third holding piece 56g extends from the first holding piece 56e. That is, the first lid holding portion 56a and the second lid holding portion 56b are U-shaped in plan view. The distance between the inner surface of the second holding piece 56f of the first lid holding portion 56a and the inner surface of the third holding piece 56g in the short direction of the pedestal 52 is substantially the same as the dimension in the short direction of the lid 14; The distance between the inner surface of the second holding piece 56f of the second lid holding portion 56b and the inner surface of the third holding piece 56g is substantially the same as the dimension of the lid 14 in the short direction.

第１蓋保持部５６ａ及び第２蓋保持部５６ｂの各延出部５６ｄにおける立設方向の基端部の外面には、第１ばね５７の一端が取り付けられ、第１ばね５７の他端は、台座部５２の第１枠部５２ａの内面に取り付けられている。これにより、第１及び第２蓋保持部５６ａ，５６ｂは、第１ばね５７を介して台座部５２の第１枠部５２ａと繋がっている。第１ばね５７が自然長のとき、第１蓋保持部５６ａの第１保持片５６ｅの内面と第２蓋保持部５６ｂの第１保持片５６ｅの内面との距離は、蓋１４の長手方向の寸法よりも短い。よって、蓋１４が第１蓋保持部５６ａと第２蓋保持部５６ｂとの間にあるとき、第１ばね５７は第１及び第２蓋保持部５６ａ，５６ｂを互いに近付く方向に付勢する。これにより、蓋１４は、第１及び第２蓋保持部５６ａ，５６ｂにより長手方向の両端側が保持される。   One end of a first spring 57 is attached to the outer surface of the proximal end in the standing direction of each extending portion 56d of the first lid holding portion 56a and the second lid holding portion 56b, and the other end of the first spring 57 is , And the inner surface of the first frame 52 a of the pedestal 52. Thus, the first and second lid holding portions 56 a and 56 b are connected to the first frame 52 a of the pedestal 52 via the first spring 57. When the first spring 57 has a natural length, the distance between the inner surface of the first holding piece 56e of the first lid holding part 56a and the inner surface of the first holding piece 56e of the second lid holding part 56b is Shorter than the dimensions. Therefore, when the lid 14 is between the first lid holding portion 56a and the second lid holding portion 56b, the first spring 57 biases the first and second lid holding portions 56a and 56b in a direction to approach each other. Thereby, the lid 14 is held at both ends in the longitudinal direction by the first and second lid holding portions 56a and 56b.

なお、蓋１４を保持しているとき、第１蓋保持部５６ａの第１保持片５６ｅは、蓋１４の長手方向の一端面に沿い、第２保持片５６ｆは、蓋１４の短手方向の一端面の一部に沿い、第３保持片５６ｇは、蓋１４の短手方向の他端面の一部に沿う。また、第２蓋保持部５６ｂの第１保持片５６ｅは、蓋１４の長手方向の他端面に沿い、第２保持片５６ｆは、蓋１４の短手方向の一端面の一部に沿い、第３保持片５６ｇは、蓋１４の短手方向の他端面の一部に沿う。また、蓋１４が第１及び第２蓋保持部５６ａ，５６ｂによって保持された状態では、正極端子１５、負極端子１６、導電部材１７、正極タブ群２５ａ、及び負極タブ群２８ａを介して蓋１４に吊り下げられた電極組立体１２のタブ側端面１２ａは、ケース本体１３の長側壁１３ｃ及び短側壁１３ｄの先端面１３ｅよりも上側に位置する。また、蓋１４を上面１４ｂから見たとき、蓋１４の一方の長縁部は、ケース本体１３の一方の長側壁１３ｃの先端面１３ｅと重なり、蓋１４の他方の長縁部は、ケース本体１３の他方の長側壁１３ｃの先端面１３ｅと重なる。また、蓋１４を上面１４ｂから見たとき、蓋１４の一方の短縁部は、ケース本体１３の一方の短側壁１３ｄの先端面１３ｅと重なり、蓋１４の他方の短縁部は、ケース本体１３の他方の短側壁１３ｄの先端面１３ｅと重なる。つまり、蓋１４は、第１及び第２蓋保持部５６ａ，５６ｂによって保持されることで、ケース本体１３の開口部１３ａに対して位置決めされる。   When the lid 14 is held, the first holding piece 56e of the first lid holding portion 56a is along one end face of the lid 14 in the longitudinal direction, and the second holding piece 56f is in the lateral direction of the lid 14. The third holding piece 56g extends along a portion of the other end surface in the short direction of the lid 14 along a portion of one end surface. Further, the first holding piece 56e of the second lid holding portion 56b is along the other end face of the lid 14 in the longitudinal direction, and the second holding piece 56f is along the part of one end face of the lid 14 in the lateral direction. The three holding pieces 56 g extend along a part of the other end face in the short direction of the lid 14. In the state where the lid 14 is held by the first and second lid holding portions 56a and 56b, the lid 14 is held via the positive electrode terminal 15, the negative electrode terminal 16, the conductive member 17, the positive electrode tab group 25a, and the negative electrode tab group 28a. The tab-side end surface 12a of the electrode assembly 12 suspended from the top is positioned above the tip end surface 13e of the long side wall 13c and the short side wall 13d of the case main body 13. Further, when the lid 14 is viewed from the upper surface 14 b, one long edge of the lid 14 overlaps the tip end surface 13 e of one long sidewall 13 c of the case main body 13, and the other long edge of the lid 14 is the case main body It overlaps with the end face 13 e of the other long side wall 13 c of 13. Further, when the lid 14 is viewed from the upper surface 14 b, one short edge of the lid 14 overlaps the tip end surface 13 e of one short sidewall 13 d of the case body 13, and the other short edge of the lid 14 is the case body It overlaps with the end face 13e of the other short side wall 13d of 13. That is, the lid 14 is positioned with respect to the opening 13 a of the case main body 13 by being held by the first and second lid holding portions 56 a and 56 b.

第１及び第２蓋保持部５６ａ，５６ｂが蓋１４を保持した状態から第１ばね５７が縮むと、台座部５２の長手方向における第１蓋保持部５６ａの第１保持片５６ｅの内面と第２蓋保持部５６ｂの第１保持片５６ｅの内面との距離は、蓋１４の長手方向の寸法よりも長くなり、蓋１４は第１及び第２蓋保持部５６ａ，５６ｂに保持されない非保持状態となる。つまり、第１蓋保持部５６ａ及び第２蓋保持部５６ｂは、第１ばね５７の縮み具合に応じて、蓋１４を保持する保持位置と、蓋１４を保持しない非保持位置とに移動可能である。   When the first spring 57 is contracted from the state where the first and second lid holding portions 56a and 56b hold the lid 14, the inner surface of the first holding piece 56e of the first lid holding portion 56a in the longitudinal direction of the pedestal portion 52 and the first The distance between the lid holding portion 56b and the inner surface of the first holding piece 56e is longer than the dimension in the longitudinal direction of the lid 14, and the lid 14 is not held by the first and second lid holding portions 56a and 56b. It becomes. That is, the first lid holding portion 56a and the second lid holding portion 56b can be moved between the holding position for holding the lid 14 and the non-holding position for not holding the lid 14 according to the degree of contraction of the first spring 57. is there.

蓋保持機構５４は、第１及び第２蓋保持部５６ａ，５６ｂを保持位置と非保持位置とに移動させる移動機構を備える。本実施形態の移動機構は、板状の拡張部材５８である。拡張部材５８は、台座部５２の長手方向において、第１蓋保持部５６ａの底部５６ｃと第２蓋保持部５６ｂの底部５６ｃとの間に配置されている。拡張部材５８の平面視形状は、台座部５２の短手方向において、台座部５２の中央から端に向かうほど幅が大きくなる台形状である。ケース本体１３の底壁１３ｂは、拡張部材５８の上面に支持される。拡張部材５８は、ケース本体１３の底壁１３ｂ及び台座部５２の上面に対して台座部５２の短手方向にスライド可能に支持されている。台座部５２の短手方向における拡張部材５８の一対の端面のうち面積の大きい方の端面を押圧端面５８ａとし、面積の小さい方の端面を取付端面５８ｂとする。取付端面５８ｂには、第２ばね５９の一端が取り付けられ、第２ばね５９の他端は、台座部５２の第２枠部５２ｂの内面に取り付けられている。これにより、拡張部材５８は、第２ばね５９を介して台座部５２の第２枠部５２ｂと繋がっている。   The lid holding mechanism 54 includes a moving mechanism for moving the first and second lid holding portions 56a and 56b between the holding position and the non-holding position. The moving mechanism of the present embodiment is a plate-like expanding member 58. The extension member 58 is disposed between the bottom 56 c of the first lid holding portion 56 a and the bottom 56 c of the second lid holding portion 56 b in the longitudinal direction of the pedestal 52. The plan view shape of the expansion member 58 is a trapezoidal shape in which the width increases from the center to the end of the pedestal 52 in the short direction of the pedestal 52. The bottom wall 13 b of the case body 13 is supported on the top surface of the expansion member 58. The extension member 58 is slidably supported in the short direction of the pedestal 52 with respect to the bottom wall 13 b of the case main body 13 and the upper surface of the pedestal 52. Of the pair of end surfaces of the expansion member 58 in the short direction of the pedestal portion 52, the end surface with the larger area is taken as the pressing end surface 58a, and the end surface with the smaller area is taken as the mounting end surface 58b. One end of the second spring 59 is attached to the attachment end surface 58 b, and the other end of the second spring 59 is attached to the inner surface of the second frame 52 b of the pedestal 52. Thus, the expansion member 58 is connected to the second frame 52 b of the pedestal 52 via the second spring 59.

そして、拡張部材５８の押圧端面５８ａが押圧されると、拡張部材５８が台座部５２の短手方向において第２枠部５２ｂに近付くように移動することで第２ばね５９が縮む。また、拡張部材５８が台座部５２の短手方向において第２枠部５２ｂに近付くように移動すると、第１蓋保持部５６ａの底部５６ｃと第２蓋保持部５６ｂの底部５６ｃとの間に存在する拡張部材５８の幅が大きくなっていき、第１蓋保持部５６ａ及び第２蓋保持部５６ｂの底部５６ｃはそれぞれ、台座部５２の長手方向の外側に向けてスライドし、各第１ばね５７は徐々に縮む。こうして第１蓋保持部５６ａ及び第２蓋保持部５６ｂは、蓋１４を保持しない非保持位置に移動する。   Then, when the pressing end surface 58a of the expanding member 58 is pressed, the expanding member 58 moves so as to approach the second frame 52b in the lateral direction of the pedestal 52, whereby the second spring 59 is contracted. In addition, when the expanding member 58 moves so as to approach the second frame 52b in the lateral direction of the pedestal 52, it is present between the bottom 56c of the first lid holder 56a and the bottom 56c of the second lid holder 56b. The width of the expanding member 58 is increased, and the bottom portions 56c of the first lid holding portion 56a and the second lid holding portion 56b respectively slide outward in the longitudinal direction of the pedestal portion 52, and each first spring 57 Will shrink gradually. Thus, the first lid holding portion 56a and the second lid holding portion 56b move to the non-holding position where the lid 14 is not held.

押圧端面５８ａの押圧が解除されると、第２ばね５９が縮んだ状態から回復することで、拡張部材５８は、台座部５２の短手方向において第２枠部５２ｂから離れるように移動する。また、第１蓋保持部５６ａの底部５６ｃと第２蓋保持部５６ｂの底部５６ｃとの間に存在する拡張部材５８の幅が小さくなっていき、第１蓋保持部５６ａ及び第２蓋保持部５６ｂの底部５６ｃはそれぞれ、互いに近付くように台座部５２の長手方向の内側に向けてスライドする。こうして第１蓋保持部５６ａ及び第２蓋保持部５６ｂは、蓋１４を保持しない非保持位置から、蓋１４を保持する保持位置に移動する。   When the pressing end surface 58a is released from the pressure, the expansion member 58 moves away from the second frame 52b in the lateral direction of the pedestal 52 by recovering from the state in which the second spring 59 is contracted. Further, the width of the expansion member 58 existing between the bottom portion 56c of the first lid holding portion 56a and the bottom portion 56c of the second lid holding portion 56b becomes smaller, and the first lid holding portion 56a and the second lid holding portion The bottom portions 56c of the 56b respectively slide inward in the longitudinal direction of the pedestal portion 52 so as to approach each other. Thus, the first lid holding portion 56 a and the second lid holding portion 56 b move from the non-holding position where the lid 14 is not held to the holding position where the lid 14 is held.

カバー支持部５５は、ケース本体保持部５３より外側で第１絶縁カバー３０ａを支持する第１カバー支持部５５ａと、ケース本体保持部５３より外側で第２絶縁カバー３０ｂを支持する第２カバー支持部５５ｂとから構成されている。第１カバー支持部５５ａ及び第２カバー支持部５５ｂは、台座部５２の短手方向においてケース本体１３の開口部１３ａよりも外側に配置される。第２カバー支持部５５ｂは、第１カバー支持部５５ａよりも台座部５２の第２枠部５２ｂ寄りに配置される。   The cover supporting portion 55 is a first cover supporting portion 55a for supporting the first insulating cover 30a outside the case main body holding portion 53, and a second cover supporting for supporting the second insulating cover 30b outside the case main body holding portion 53. And a section 55b. The first cover support 55 a and the second cover support 55 b are disposed outside the opening 13 a of the case main body 13 in the short direction of the pedestal 52. The second cover support 55b is disposed closer to the second frame 52b of the pedestal 52 than the first cover support 55a.

第１カバー支持部５５ａは、ケース本体保持部５３の第１壁部５３ａ及び第２壁部５３ｂの各上端面から立設する基部５５ｃと、各基部５５ｃの先端部から積層方向の外側に向けて延出したコ字状の支持台５５ｄとを有する。支持台５５ｄの上面は、第１及び第２蓋保持部５６ａ，５６ｂの第１〜第３保持片５６ｅ〜５６ｇの下面と電極組立体１２のタブ側端面１２ａとの間に位置する。すなわち、支持台５５ｄの上面は、電極組立体１２の積層方向から見て、蓋１４の下面１４ａと電極組立体１２のタブ側端面１２ａとの間に重なる位置にある。また、支持台５５ｄによって支持される第１絶縁カバー３０ａは、電極組立体１２の積層方向から見て、蓋１４の下面１４ａと電極組立体１２のタブ側端面１２ａとの間に重なる位置にある。   The first cover support 55a is directed from the tip of each base 55c to the outside in the stacking direction from a base 55c erected from each upper end face of the first wall 53a and the second wall 53b of the case main body holder 53. And an extended U-shaped support 55d. The upper surface of the support base 55 d is located between the lower surfaces of the first to third holding pieces 56 e to 56 g of the first and second lid holding parts 56 a and 56 b and the tab side end face 12 a of the electrode assembly 12. That is, the upper surface of the support base 55 d is at a position overlapping between the lower surface 14 a of the lid 14 and the tab-side end surface 12 a of the electrode assembly 12 when viewed in the stacking direction of the electrode assembly 12. Further, the first insulating cover 30a supported by the support base 55d is located at a position overlapping between the lower surface 14a of the lid 14 and the tab-side end surface 12a of the electrode assembly 12 when viewed in the stacking direction of the electrode assembly 12. .

第２カバー支持部５５ｂは、ケース本体保持部５３の第３壁部５３ｃ及び第４壁部の各上端面から立設する基部５５ｃと、各基部５５ｃの先端部から積層方向の外側に向けて延出したコ字状の支持台５５ｄとを有する。支持台５５ｄの上面は、第１及び第２蓋保持部５６ａ，５６ｂの第１〜第３保持片５６ｅ〜５６ｇの下面と電極組立体１２のタブ側端面１２ａとの間に位置する。すなわち、支持台５５ｄの上面は、電極組立体１２の積層方向から見て、蓋１４の下面１４ａと電極組立体１２のタブ側端面１２ａとの間に重なる位置にある。また、支持台５５ｄによって支持される第２絶縁カバー３０ｂは、電極組立体１２の積層方向から見て、蓋１４の下面１４ａと電極組立体１２のタブ側端面１２ａとの間に重なる位置にある。   The second cover support 55b extends from the tip of each base 55c to the outer side in the stacking direction from a base 55c erected from each upper end face of the third wall 53c and the fourth wall of the case main body holder 53. And an extended U-shaped support 55d. The upper surface of the support base 55 d is located between the lower surfaces of the first to third holding pieces 56 e to 56 g of the first and second lid holding parts 56 a and 56 b and the tab side end face 12 a of the electrode assembly 12. That is, the upper surface of the support base 55 d is at a position overlapping between the lower surface 14 a of the lid 14 and the tab-side end surface 12 a of the electrode assembly 12 when viewed in the stacking direction of the electrode assembly 12. Further, the second insulating cover 30b supported by the support base 55d is located at a position overlapping between the lower surface 14a of the lid 14 and the tab-side end surface 12a of the electrode assembly 12 when viewed in the stacking direction of the electrode assembly 12. .

次に、治具５１以外の二次電池の製造装置５０について、二次電池の製造方法とともに説明する。
図４に示すように、二次電池の製造装置５０は、複数の治具５１を連続搬送する搬送装置８０を備える。搬送装置８０は、環状に配置されている。搬送装置８０によって複数の治具５１が搬送される経路を搬送路Ｒとする。搬送路Ｒは、供給搬送路Ｒ１と、組立搬送路Ｒ２と、供給搬送路Ｒ１と組立搬送路Ｒ２とを接続する接続搬送路Ｒ３とを有する。供給搬送路Ｒ１及び組立搬送路Ｒ２は、直線状に延びる経路であり、接続搬送路Ｒ３は、供給搬送路Ｒ１と組立搬送路Ｒ２の一端同士又は他端同士を接続する経路である。治具５１は、第１カバー支持部５５ａ及び拡張部材５８が搬送路Ｒの外周側、第２カバー支持部５５ｂ及び台座部５２の第２枠部５２ｂが搬送路Ｒの内周側となるように搬送される。組立搬送路Ｒ２における搬送方向の上流側の端部の側方には、前工程で用いられる搬送装置としての第１ベルトコンベア８１が配置されている。組立搬送路Ｒ２における搬送方向の下流側の端部の側方には、後工程で用いられる搬送装置としての第２ベルトコンベア８２が配置されている。 Next, an apparatus 50 for manufacturing a secondary battery other than the jig 51 will be described together with a method for manufacturing a secondary battery.
As shown in FIG. 4, the manufacturing apparatus 50 for the secondary battery includes a transport device 80 that transports the plurality of jigs 51 continuously. The transport device 80 is arranged in a ring shape. A path along which the plurality of jigs 51 are transported by the transport device 80 is referred to as a transport path R. The transport path R includes a feed transport path R1, an assembly transport path R2, and a connection transport path R3 connecting the feed transport path R1 and the assembly transport path R2. The feed transport path R1 and the assembly transport path R2 are paths extending linearly, and the connection transport path R3 is a path connecting one end or the other end of the feed transport path R1 and the assembly transport path R2. In the jig 51, the first cover support 55a and the extension member 58 are on the outer peripheral side of the transport path R, and the second cover support 55b and the second frame 52b of the pedestal 52 are on the inner peripheral side of the transport path R. Transported to The 1st belt conveyor 81 as a conveyance device used at a front process is arranged at the side of the end by the side of the upper stream in the conveyance direction in assembly conveyance way R2. A second belt conveyor 82 as a conveying device used in the post process is disposed on the side of the downstream end of the assembly conveyance path R2 in the conveyance direction.

供給搬送路Ｒ１では、搬送中の治具５１に対して各種部材を供給する供給工程が行われる。供給工程は、治具５１にケース本体１３を供給するケース本体供給工程と、治具５１に第１絶縁カバー３０ａを供給する第１カバー供給工程と、治具５１に第２絶縁カバー３０ｂを供給する第２カバー供給工程とを有する。組立搬送路Ｒ２では、各種部材が供給された治具５１を搬送しながら、二次電池１０を組み立てる組立工程が行われる。組立工程は、電極組立体挿入工程と、第１カバー組付工程と、第２カバー組付工程と、組立部材保持工程と、蓋押圧工程とを備える。   In the supply conveyance path R1, a supply step of supplying various members to the jig 51 being conveyed is performed. The supply process includes a case main body supply process of supplying the case main body 13 to the jig 51, a first cover supply process of supplying the first insulating cover 30a to the jig 51, and a second insulation cover 30b to the jig 51. And a second cover supplying step. In the assembly conveyance path R2, an assembly process of assembling the secondary battery 10 is performed while conveying the jig 51 to which various members are supplied. The assembly process includes an electrode assembly insertion process, a first cover assembly process, a second cover assembly process, an assembly member holding process, and a lid pressing process.

二次電池の製造装置５０は、供給搬送路Ｒ１に沿って配置された部材供給装置６０と、組立搬送路Ｒ２に沿って配置された組立装置７０とを有する。部材供給工程は、部材供給装置６０によって行われ、組立工程は、組立装置７０によって行われる。   The manufacturing apparatus 50 of the secondary battery has a member supply device 60 disposed along the supply transport path R1 and an assembly device 70 disposed along the assembly transport path R2. The member supply process is performed by the member supply device 60, and the assembly process is performed by the assembly device 70.

部材供給装置６０は、ケース本体供給工程を行うケース本体供給部６１と、第１カバー供給工程を行う第１カバー供給部６２と、第２カバー供給工程を行う第２カバー供給部６３を有する。   The member supply device 60 includes a case main body supply unit 61 that performs a case main body supply process, a first cover supply unit 62 that performs a first cover supply process, and a second cover supply unit 63 that performs a second cover supply process.

ケース本体供給部６１は、供給搬送路Ｒ１において搬送方向の上流側に配置される。本実施形態のケース本体供給部６１は、ロボットアームである。ケース本体供給部６１は、複数のケース本体１３が収容された図示しない収容部から、ケース本体１３を１つ取り出し、搬送中の治具５１のケース本体保持部５３に挿入する。これにより、ケース本体１３は、治具５１のケース本体保持部５３に保持される。すなわち、治具５１にケース本体１３が供給される。   The case main body supply unit 61 is disposed on the upstream side in the conveyance direction in the supply conveyance path R1. The case main body supply unit 61 of the present embodiment is a robot arm. The case main body supply unit 61 takes out one case main body 13 from an accommodation portion (not shown) in which a plurality of case bodies 13 are accommodated, and inserts the case main body holding portion 53 of the jig 51 being transported. As a result, the case body 13 is held by the case body holding portion 53 of the jig 51. That is, the case body 13 is supplied to the jig 51.

第１カバー供給部６２は、供給搬送路Ｒ１での搬送方向においてケース本体供給部６１よりも下流側に配置される。本実施形態の第１カバー供給部６２は、ロボットアームである。第１カバー供給部６２は、複数の第１絶縁カバー３０ａが収容された図示しない収容部から、第１絶縁カバー３０ａを１つ取り出し、搬送中の治具５１の第１カバー支持部５５ａ上に載置する。これにより、第１絶縁カバー３０ａは、治具５１の第１カバー支持部５５ａによって支持される。すなわち、治具５１に第１絶縁カバー３０ａが供給される。   The first cover supply unit 62 is disposed downstream of the case main body supply unit 61 in the conveyance direction of the supply conveyance path R1. The first cover supply unit 62 of the present embodiment is a robot arm. The first cover supply unit 62 takes out one first insulation cover 30 a from a not-shown accommodation unit in which a plurality of first insulation covers 30 a are accommodated, and places the first insulation cover 30 a on the first cover support 55 a of the jig 51 being transported. Place it. Thereby, the first insulating cover 30 a is supported by the first cover support portion 55 a of the jig 51. That is, the first insulating cover 30 a is supplied to the jig 51.

第２カバー供給部６３は、供給搬送路Ｒ１での搬送方向において第１カバー供給部６２よりも下流側に配置される。本実施形態の第２カバー供給部６３は、ロボットアームである。第２カバー供給部６３は、複数の第２絶縁カバー３０ｂが収容された図示しない収容部から、第２絶縁カバー３０ｂを１つ取り出し、治具５１の第２カバー支持部５５ｂ上に載置する。これにより、第２絶縁カバー３０ｂは、治具５１の第２カバー支持部５５ｂによって支持される。すなわち、治具５１に第２絶縁カバー３０ｂが供給される。治具５１は、ケース本体１３、第１絶縁カバー３０ａ、及び第２絶縁カバー３０ｂが供給された後、接続搬送路Ｒ３を通って組立搬送路Ｒ２に搬送される。   The second cover supply unit 63 is disposed downstream of the first cover supply unit 62 in the conveyance direction of the supply conveyance path R1. The second cover supply unit 63 in the present embodiment is a robot arm. The second cover supply unit 63 takes out one second insulating cover 30 b from a housing (not shown) in which the plurality of second insulating covers 30 b are stored, and places the second insulating cover 30 b on the second cover support 55 b of the jig 51. . As a result, the second insulating cover 30 b is supported by the second cover support 55 b of the jig 51. That is, the second insulating cover 30 b is supplied to the jig 51. After the case body 13, the first insulating cover 30a, and the second insulating cover 30b are supplied, the jig 51 is conveyed to the assembly conveyance path R2 through the connection conveyance path R3.

図４に示すように、組立装置７０は、電極組立体挿入工程を行うアーム部としての第１アーム部７１と第１治具押圧部７２とを備える。第１アーム部７１は、搬送路Ｒの内周側に配置される。図５（ａ）〜図５（ｃ）に示すように、第１アーム部７１は、組立部材Ｗの挟持及び挟持解除を行う。第１アーム部７１は、組立部材Ｗのうち電極組立体１２の積層方向の両端面を挟持する電極組立体挟持部７１ａと、組立部材Ｗのうち蓋１４を短手方向の両側から挟持する蓋挟持部７１ｂとを有する。第１アーム部７１は、組立搬送路Ｒ２の搬送方向に沿う方向に往復移動可能である。第１アーム部７１は、組立搬送路Ｒ２上を搬送されている治具５１と併走可能である。また、第１治具押圧部７２は、搬送路Ｒの外周側に配置される。第１治具押圧部７２は、治具５１の拡張部材５８の押圧端面５８ａを押圧可能である。   As shown in FIG. 4, the assembling apparatus 70 includes a first arm 71 and a first jig pressing portion 72 as an arm that performs an electrode assembly inserting process. The first arm portion 71 is disposed on the inner peripheral side of the transport path R. As shown in FIG. 5A to FIG. 5C, the first arm portion 71 holds and releases the assembled member W. The first arm portion 71 is an electrode assembly holding portion 71a for holding both end surfaces of the assembly member W in the stacking direction of the electrode assembly 12, and a lid for holding the lid 14 of the assembly member W from both sides in the lateral direction. And a holding portion 71b. The first arm portion 71 can reciprocate in a direction along the conveyance direction of the assembly conveyance path R2. The first arm portion 71 can travel in parallel with the jig 51 conveyed on the assembly conveyance path R2. Further, the first jig pressing portion 72 is disposed on the outer peripheral side of the transport path R. The first jig pressing portion 72 can press the pressing end surface 58 a of the expansion member 58 of the jig 51.

電極組立体挿入工程では、まず、第１アーム部７１が、第１ベルトコンベア８１によって搬送された組立部材Ｗを挟持する。第１アーム部７１の電極組立体挟持部７１ａは、電極組立体１２の積層方向の両端面を挟持し、蓋挟持部７１ｂは、蓋１４を短手方向の両側から挟持する。次に、第１アーム部７１は、搬送方向の下流に向かって治具５１と併走する。第１治具押圧部７２は、搬送される治具５１の拡張部材５８の押圧端面５８ａを押圧する。これにより、図５（ａ）に示すように、第１蓋保持部５６ａ及び第２蓋保持部５６ｂは非保持位置に移動する。そして、第１アーム部７１は、治具５１のケース本体保持部５３に保持されたケース本体１３内に電極組立体１２の一部を挿入する。電極組立体１２の一部がケース本体１３内に挿入された状態では、電極組立体１２の側面のうちタブ側端面１２ａ寄りの部分は、ケース本体１３の外部に露出している。そして、図５（ｂ）に示すように、ケース本体１３内に電極組立体１２の一部が挿入されると、第１治具押圧部７２による治具５１の拡張部材５８の押圧端面５８ａの押圧が解除され、第１蓋保持部５６ａ及び第２蓋保持部５６ｂは、保持位置に移動して蓋１４を保持する。このとき、第１蓋保持部５６ａ及び第２蓋保持部５６ｂによって保持された蓋１４の下面１４ａと、正極端子１５、負極端子１６、導電部材１７、正極タブ群２５ａ、及び負極タブ群２８ａを介して蓋１４に吊り下げられた電極組立体１２のタブ側端面１２ａとの間には隙間が存在する。また、電極組立体１２のタブ側端面１２ａは、ケース本体１３の長側壁１３ｃ及び短側壁１３ｄの先端面１３ｅよりも上側に位置するため、蓋１４とタブ側端面１２ａとの間の隙間は、ケース本体１３の長側壁１３ｃ及び短側壁１３ｄにより覆われない。つまり、蓋１４と導電部材１７との間の隙間は、ケース本体１３の長側壁１３ｃ及び短側壁１３ｄにより覆われず、第１絶縁カバー３０ａ及び第２絶縁カバー３０ｂの組み付けが可能な状態である。そして、図５（ｃ）に示すように、蓋１４が第１及び第２蓋保持部５６ａ，５６ｂによって保持された状態で、第１アーム部７１は組立部材Ｗを離し、その後、搬送方向の上流側に移動する。   In the electrode assembly inserting step, first, the first arm portion 71 clamps the assembly member W conveyed by the first belt conveyor 81. The electrode assembly clamping unit 71a of the first arm unit 71 clamps both end surfaces of the electrode assembly 12 in the stacking direction, and the lid clamping unit 71b clamps the lid 14 from both sides in the lateral direction. Next, the first arm portion 71 travels in parallel with the jig 51 toward the downstream in the transport direction. The first jig pressing portion 72 presses the pressing end surface 58 a of the expansion member 58 of the jig 51 being transported. Thereby, as shown to Fig.5 (a), the 1st lid holding part 56a and the 2nd lid holding part 56b move to a non-holding position. Then, the first arm portion 71 inserts a part of the electrode assembly 12 into the case main body 13 held by the case main body holding portion 53 of the jig 51. When a portion of the electrode assembly 12 is inserted into the case body 13, a portion of the side surface of the electrode assembly 12 near the tab-side end surface 12 a is exposed to the outside of the case body 13. Then, as shown in FIG. 5B, when a part of the electrode assembly 12 is inserted into the case main body 13, the pressing end surface 58a of the extension member 58 of the jig 51 by the first jig pressing portion 72 is The pressing is released, and the first lid holding portion 56 a and the second lid holding portion 56 b move to the holding position and hold the lid 14. At this time, the lower surface 14a of the lid 14 held by the first lid holding portion 56a and the second lid holding portion 56b, the positive electrode terminal 15, the negative electrode terminal 16, the conductive member 17, the positive electrode tab group 25a, and the negative electrode tab group 28a A gap is present between the end face 12a of the electrode assembly 12 suspended by the lid 14 and the tab end face 12a. Further, since the tab side end face 12a of the electrode assembly 12 is positioned above the tip end face 13e of the long side wall 13c and the short side wall 13d of the case main body 13, the gap between the lid 14 and the tab side end face 12a is It is not covered by the long side wall 13 c and the short side wall 13 d of the case body 13. That is, the gap between the lid 14 and the conductive member 17 is not covered by the long side wall 13c and the short side wall 13d of the case main body 13, and the first insulating cover 30a and the second insulating cover 30b can be assembled. . Then, as shown in FIG. 5C, in a state where the lid 14 is held by the first and second lid holding portions 56a and 56b, the first arm portion 71 releases the assembly member W, and thereafter, in the transport direction Move upstream.

図４及び図６（ａ）に示すように、組立装置は、第１絶縁カバー組付工程を行うカバー組付部としての第１カバー押圧部７３を備える。第１カバー押圧部７３は、組立搬送路Ｒ２での搬送方向において第１アーム部７１よりも下流側、かつ搬送路Ｒの外周側に配置される。第１カバー押圧部７３は、組立搬送路Ｒ２の搬送方向に沿う方向に往復移動可能である。第１カバー押圧部７３は、組立搬送路Ｒ２上を搬送されている治具５１と併走可能である。第１カバー押圧部７３は、第１絶縁カバー３０ａを組立部材Ｗに向けて押圧可能である。   As shown in FIGS. 4 and 6A, the assembling apparatus includes a first cover pressing portion 73 as a cover assembling portion which performs a first insulating cover assembling step. The first cover pressing portion 73 is disposed downstream of the first arm portion 71 in the transport direction in the assembly transport path R2 and on the outer peripheral side of the transport path R. The first cover pressing portion 73 can reciprocate in a direction along the conveyance direction of the assembly conveyance path R2. The first cover pressing portion 73 can co-travel with the jig 51 being transported on the assembly transport path R2. The first cover pressing portion 73 can press the first insulating cover 30 a toward the assembly member W.

第１絶縁カバー組付工程では、第１カバー押圧部７３は、搬送方向の下流に向かって治具５１と併走しながら、治具５１の第１カバー支持部５５ａに支持された第１絶縁カバー３０ａを組立部材Ｗ側に向けて押圧する。すると、第１絶縁カバー３０ａは、組立部材Ｗにおける所定の位置に組み付けられる。すなわち、第１絶縁カバー３０ａの第１部位３１は、蓋１４の下面１４ａと導電部材１７の上面との間に挿入され、第２部位３２は、電極組立体１２のタブ側端面１２ａと正極タブ群２５ａ及び負極タブ群２８ａとの間に挿入される。また、第１絶縁カバー３０ａの第３部位３３は、正極タブ群２５ａ及び負極タブ群２８ａの先端側曲げ部２９ｃを外側から覆う。第１カバー押圧部７３は、第１絶縁カバー３０ａの組み付けが完了すると、搬送方向の上流側に移動する。なお、第１カバー組付工程の間、蓋１４は治具５１の第１及び第２蓋保持部５６ａ，５６ｂによって保持された状態である。   In the first insulating cover assembling step, the first cover pressing portion 73 is a first insulating cover supported by the first cover supporting portion 55 a of the jig 51 while traveling with the jig 51 toward the downstream in the transport direction. 30a is pressed toward the assembly member W side. Then, the first insulating cover 30a is assembled at a predetermined position on the assembly member W. That is, the first portion 31 of the first insulating cover 30 a is inserted between the lower surface 14 a of the lid 14 and the upper surface of the conductive member 17, and the second portion 32 is the tab end surface 12 a of the electrode assembly 12 and the positive electrode tab It is inserted between the group 25a and the negative electrode tab group 28a. Further, the third portion 33 of the first insulating cover 30a covers the positive electrode tab group 25a and the distal end side bent portion 29c of the negative electrode tab group 28a from the outside. When the assembly of the first insulating cover 30 a is completed, the first cover pressing portion 73 moves to the upstream side in the transport direction. The lid 14 is held by the first and second lid holders 56a and 56b of the jig 51 during the first cover assembling step.

図４及び図６（ｂ）に示すように、組立装置７０は、第２絶縁カバー組付工程を行うカバー組付部としての第２カバー押圧部７４を備える。第２カバー押圧部７４は、組立搬送路Ｒ２での搬送方向において第１カバー押圧部７３よりも下流側、かつ搬送路Ｒの内周側に配置される。第２カバー押圧部７４は、組立搬送路Ｒ２の搬送方向に沿う方向に往復移動可能である。第２カバー押圧部７４は、組立搬送路Ｒ２上を搬送される治具５１と併走可能である。第２カバー押圧部７４は、第２絶縁カバー３０ｂを組立部材Ｗに向けて押圧可能である。   As shown in FIGS. 4 and 6B, the assembling apparatus 70 includes a second cover pressing portion 74 as a cover assembling portion that performs a second insulating cover assembling step. The second cover pressing portion 74 is disposed downstream of the first cover pressing portion 73 in the transport direction in the assembly transport path R2 and on the inner peripheral side of the transport path R. The second cover pressing portion 74 can reciprocate in a direction along the conveyance direction of the assembly conveyance path R2. The second cover pressing portion 74 can co-travel with the jig 51 transported on the assembly transport path R2. The second cover pressing portion 74 can press the second insulating cover 30 b toward the assembly member W.

第２絶縁カバー組付工程では、第２カバー押圧部７４は、搬送方向の下流に向かって治具５１と併走しながら、治具５１の第２カバー支持部５５ｂに支持された第２絶縁カバー３０ｂを組立部材Ｗ側に向けて押圧する。すると、第２絶縁カバー３０ｂは、組立部材Ｗにおける所定の位置に組み付けられる。すなわち、第２絶縁カバー３０ｂの第２部位３８は、正極タブ群２５ａ及び負極タブ群２８ａの基端側曲げ部２９ａを外側から覆うとともに、第１絶縁カバー３０ａの係止凹部３４ａに係止爪３９ａが係止される。第２カバー押圧部７４は、第２絶縁カバー３０ｂの組み付けが完了すると、搬送方向の上流側に移動する。なお、第２カバー組付工程の間、蓋１４は治具５１の第１及び第２蓋保持部５６ａ，５６ｂによって保持された状態である。   In the second insulating cover assembling step, the second cover pressing portion 74 is a second insulating cover supported by the second cover support portion 55b of the jig 51 while traveling with the jig 51 toward the downstream in the transport direction. 30b is pressed toward the assembly member W side. Then, the second insulating cover 30 b is assembled at a predetermined position on the assembly member W. That is, the second portion 38 of the second insulating cover 30b covers the base end side bent portion 29a of the positive electrode tab group 25a and the negative electrode tab group 28a from the outside, and the engaging claw 34a of the first insulating cover 30a 39a is locked. The second cover pressing portion 74 moves to the upstream side in the transport direction when the assembly of the second insulating cover 30 b is completed. The lid 14 is held by the first and second lid holders 56a and 56b of the jig 51 during the second cover assembling step.

図４に示すように、組立装置７０は、組立部材保持工程を行う組立部材保持部としての吸着部７５と第２治具押圧部７６とを備える。吸着部７５は、組立搬送路Ｒ２での搬送方向において第２カバー押圧部７４よりも下流側、かつ搬送路Ｒの上方に配置される。吸着部７５は、組立搬送路Ｒ２の搬送方向に沿う方向に往復移動可能である。吸着部７５は、組立搬送路Ｒ２上を搬送される治具５１と併走可能である。吸着部７５は、蓋１４の上面１４ｂを吸着する吸着位置と、蓋１４の上面１４ｂから離れ、蓋１４を吸着しない非吸着位置とで上下方向に移動可能である。また、第２治具押圧部７６は、組立搬送路Ｒ２での搬送方向において吸着部７５よりも下流側、かつ搬送路Ｒの外周側に配置される。第２治具押圧部７６は、治具５１の拡張部材５８の押圧端面５８ａを押圧可能である。   As shown in FIG. 4, the assembling apparatus 70 includes a suction unit 75 and a second jig pressing unit 76 as an assembly member holding unit that performs an assembly member holding process. The suction unit 75 is disposed on the downstream side of the second cover pressing unit 74 and above the transport path R in the transport direction in the assembly transport path R2. The adsorbing portion 75 can reciprocate in a direction along the conveyance direction of the assembly conveyance path R2. The suction unit 75 can travel in parallel with the jig 51 conveyed on the assembly conveyance path R2. The adsorbing portion 75 is vertically movable at an adsorbing position for adsorbing the upper surface 14 b of the lid 14 and at a non-adsorbing position away from the upper surface 14 b of the lid 14 and not adsorbing the lid 14. Further, the second jig pressing portion 76 is disposed on the downstream side of the suction portion 75 and on the outer peripheral side of the conveyance path R in the conveyance direction in the assembly conveyance path R2. The second jig pressing portion 76 can press the pressing end surface 58 a of the expansion member 58 of the jig 51.

図４及び図７（ｃ）に示すように、組立装置７０は、蓋押圧工程を行う蓋押圧部７７を備える。蓋押圧部７７は、組立搬送路Ｒ２での搬送方向において第２治具押圧部７６よりも下流側、かつ搬送路Ｒの上方に配置される。蓋押圧部７７は、組立搬送路Ｒ２の搬送方向に沿う方向に往復移動可能である。蓋押圧部７７は、組立搬送路Ｒ２上を搬送される治具５１と併走可能である。蓋押圧部７７は、蓋１４の上面１４ｂを押圧する押圧位置と、蓋１４の上面１４ｂから離れた非押圧位置とで上下方向に移動可能である。   As shown in FIGS. 4 and 7C, the assembling apparatus 70 includes a lid pressing portion 77 that performs a lid pressing process. The lid pressing portion 77 is disposed on the downstream side of the second jig pressing portion 76 and above the transport path R in the transport direction in the assembly transport path R2. The lid pressing portion 77 can reciprocate in the direction along the transport direction of the assembly transport path R2. The lid pressing portion 77 can run parallel to the jig 51 transported on the assembly transport path R2. The lid pressing portion 77 is vertically movable at a pressing position at which the top surface 14 b of the lid 14 is pressed and at a non-pressing position apart from the top surface 14 b of the lid 14.

そして、組立部材保持工程及び蓋押圧工程では、まず、図７（ａ）に示すように、吸着部７５が、搬送方向の下流に向かって治具５１と併走しながら蓋１４の上面１４ｂを吸着する。蓋１４が吸着部７５によって吸着されると、蓋１４を含む組立部材Ｗが吸着部７５によって保持された状態となる。すると、第２治具押圧部７６は、治具５１の拡張部材５８の押圧端面５８ａを押圧し、第１蓋保持部５６ａ及び第２蓋保持部５６ｂを非保持位置に移動させる。これにより、図７（ｂ）に示すように、蓋１４は、第１蓋保持部５６ａ及び第２蓋保持部５６ｂによる保持状態が解除される。このとき、組立部材Ｗは、吸着部７５によって吊り下げられており、組立部材Ｗの高さは変化しない。すると、図７（ｃ）に示すように、蓋押圧部７７は、搬送方向の下流に向かって治具５１と併走しながら下降し、蓋１４を電極組立体１２のタブ側端面１２ａに向けて押圧する。これにより、電極組立体１２全体、導電部材１７、第１絶縁カバー３０ａ、及び第２絶縁カバー３０ｂがケース本体１３内に収容されるとともに、ケース本体１３の開口部１３ａは蓋１４によって閉塞される。なお、吸着部７５は、蓋押圧部７７が蓋１４を押圧し始めるのと同時に、蓋１４の上面１４ｂから離れる。その後、吸着部７５は、搬送方向の上流側に移動する。また、蓋押圧部７７は、蓋押圧工程が完了すると、搬送方向の上流側に移動する。   Then, in the assembly member holding step and the lid pressing step, first, as shown in FIG. 7A, the adsorbing portion 75 adsorbs the upper surface 14b of the lid 14 while traveling downstream with the jig 51 in the transport direction. Do. When the lid 14 is sucked by the suction unit 75, the assembly member W including the lid 14 is held by the suction unit 75. Then, the second jig pressing portion 76 presses the pressing end surface 58a of the expansion member 58 of the jig 51, and moves the first lid holding portion 56a and the second lid holding portion 56b to the non-holding position. As a result, as shown in FIG. 7B, the lid 14 is released from the holding state by the first lid holding portion 56a and the second lid holding portion 56b. At this time, the assembly member W is suspended by the suction unit 75, and the height of the assembly member W does not change. Then, as shown in FIG. 7C, the lid pressing portion 77 descends in parallel with the jig 51 toward the downstream in the transport direction, and the lid 14 is directed to the tab side end surface 12a of the electrode assembly 12 Press. Thus, the entire electrode assembly 12, the conductive member 17, the first insulating cover 30a, and the second insulating cover 30b are accommodated in the case body 13, and the opening 13a of the case body 13 is closed by the lid 14. . The suction unit 75 separates from the top surface 14 b of the lid 14 at the same time as the lid pressing unit 77 starts to press the lid 14. Thereafter, the suction unit 75 moves to the upstream side in the transport direction. In addition, when the lid pressing process is completed, the lid pressing unit 77 moves to the upstream side in the transport direction.

図４に示すように、二次電池の製造装置５０は、二次電池１０を後工程に搬送する第２アーム部８３を備える。第２アーム部８３は、第２ベルトコンベア８２の側方に配置される。第２アーム部８３は、組立搬送路Ｒ２上を搬送されている蓋押圧工程後のケース１１を挟持し、第２ベルトコンベア８２上に移動させる。なお、第２アーム部８３がケース１１を第２ベルトコンベア８２上に移動させた後、治具５１には各種部材（ケース本体１３、組立部材Ｗ、第１絶縁カバー３０ａ、及び第２絶縁カバー３０ｂ）が供給されていない状態となる。そして、治具５１は、接続搬送路Ｒ３を通って、再び供給搬送路Ｒ１に搬送される。   As shown in FIG. 4, the secondary battery manufacturing apparatus 50 includes a second arm unit 83 that transports the secondary battery 10 in a later step. The second arm unit 83 is disposed to the side of the second belt conveyor 82. The second arm 83 holds the case 11 after the lid pressing step conveyed on the assembly conveyance path R2 and moves the case 11 onto the second belt conveyor 82. In addition, after the second arm portion 83 moves the case 11 onto the second belt conveyor 82, various members (the case main body 13, the assembly member W, the first insulating cover 30a, and the second insulating cover) are used for the jig 51. 30b) is not supplied. Then, the jig 51 is conveyed again to the supply conveyance path R1 through the connection conveyance path R3.

次に、本実施形態の作用を記載する。
組立工程において、第１アーム部７１が治具５１と併走することで、搬送装置８０により治具５１を連続搬送しながらケース本体１３内に電極組立体１２の一部を挿入できる。電極組立体１２の一部がケース本体１３内に挿入されると、第１及び第２蓋保持部５６ａ，５６ｂは保持位置に移動する。このとき、第１及び第２蓋保持部５６ａ，５６ｂによって保持される蓋１４と、電極組立体１２のタブ側端面１２ａとの間には隙間が存在する。また、蓋１４とタブ側端面１２ａとの間の隙間は、ケース本体１３の長側壁１３ｃ及び短側壁１３ｄにより覆われない。よって、組立部材Ｗは、蓋１４と導電部材１７との間の隙間に第１及び第２絶縁カバー３０ａ，３０ｂを組み付け可能な状態である。第１カバー押圧部７３が治具５１と併走することで、治具５１を搬送しながら蓋１４と導電部材１７との間に第１絶縁カバー３０ａを組み付けることができる。第２カバー押圧部７４が治具５１と併走することで、治具５１を搬送しながら蓋１４と導電部材１７との間に第２絶縁カバー３０ｂを組み付けることができる。吸着部７５により蓋１４が吸着されると組立部材Ｗが保持されることになる。すると、第１及び第２蓋保持部５６ａ，５６ｂは非保持位置に移動し、蓋１４の押圧が可能な状態となる。そして、蓋押圧部７７が治具５１と併走することで、治具５１を搬送しながら蓋１４を押圧し、ケース本体１３の開口部１３ａを閉塞することができる。 Next, the operation of this embodiment will be described.
In the assembly process, a part of the electrode assembly 12 can be inserted into the case main body 13 while the jig 51 is continuously conveyed by the conveyance device 80 by the first arm portion 71 co-traveling with the jig 51. When a part of the electrode assembly 12 is inserted into the case body 13, the first and second lid holding portions 56a and 56b move to the holding position. At this time, a gap is present between the lid 14 held by the first and second lid holding portions 56 a and 56 b and the tab-side end surface 12 a of the electrode assembly 12. Further, the gap between the lid 14 and the tab-side end surface 12 a is not covered by the long side wall 13 c and the short side wall 13 d of the case body 13. Therefore, the assembly member W is in a state in which the first and second insulating covers 30 a and 30 b can be assembled in the gap between the lid 14 and the conductive member 17. Since the first cover pressing portion 73 travels with the jig 51, the first insulating cover 30 a can be assembled between the lid 14 and the conductive member 17 while conveying the jig 51. Since the second cover pressing portion 74 travels with the jig 51, the second insulating cover 30b can be assembled between the lid 14 and the conductive member 17 while conveying the jig 51. When the lid 14 is adsorbed by the adsorbing portion 75, the assembly member W is held. Then, the first and second lid holding portions 56a and 56b move to the non-holding position, and the lid 14 can be pressed. Then, the lid pressing portion 77 moves in parallel with the jig 51, whereby the lid 14 can be pressed while conveying the jig 51, and the opening 13a of the case main body 13 can be closed.

次に、本実施形態の効果を記載する。
（１）第１アーム部７１、第１カバー押圧部７３、第２カバー押圧部７４、吸着部７５、及び蓋押圧部７７が治具５１と併走するとともに、治具５１が保持位置と非保持位置とで移動する第１蓋保持部５６ａ及び第２蓋保持部５６ｂを備える。このため、搬送装置８０により治具５１を連続搬送しながら、電極組立体挿入工程、第１カバー組付工程、第２カバー組付工程、組立部材保持工程、及び蓋押圧工程を行うことができる。よって、工程間での搬送時間を短縮でき、二次電池１０の生産性を向上できる。 Next, the effects of the present embodiment will be described.
(1) The first arm portion 71, the first cover pressing portion 73, the second cover pressing portion 74, the suction portion 75, and the lid pressing portion 77 run parallel to the jig 51, and the jig 51 is not held at the holding position A first lid holding portion 56a and a second lid holding portion 56b which move in position are provided. Therefore, the electrode assembly inserting step, the first cover assembling step, the second cover assembling step, the assembling member holding step, and the lid pressing step can be performed while continuously conveying the jig 51 by the conveying device 80. . Therefore, the conveyance time between processes can be shortened, and the productivity of the secondary battery 10 can be improved.

（２）第１及び第２蓋保持部５６ａ，５６ｂによって蓋１４を保持するだけで、ケース本体１３の開口部１３ａに対して蓋１４が位置決めされるため、位置決め装置を別に設ける必要がない。よって、二次電池の製造装置５０、特に組立装置７０の大型化を抑制できる。   (2) Since the lid 14 is positioned with respect to the opening 13a of the case main body 13 only by holding the lid 14 by the first and second lid holding portions 56a and 56b, it is not necessary to separately provide a positioning device. Therefore, the enlargement of the manufacturing apparatus 50 of a secondary battery, especially the assembly apparatus 70 can be suppressed.

（３）治具５１は、第１絶縁カバー３０ａを支持する第１カバー支持部５５ａを備え、二次電池の製造装置５０（組立装置７０）は、第１カバー支持部５５ａに支持された第１絶縁カバー３０ａを組立部材Ｗに向けて押圧する第１カバー組付部としての第１カバー押圧部７３を備える。これにより、複数の第１絶縁カバー３０ａが収容された収容部から１つを取り出して組立部材Ｗに組み付ける場合と比較して、第１カバー組付部の構成を簡素化できる。第２絶縁カバー３０ｂについても同様である。   (3) The jig 51 includes the first cover support portion 55a for supporting the first insulating cover 30a, and the manufacturing apparatus 50 (assembly device 70) of the secondary battery is supported by the first cover support portion 55a. A first cover pressing portion 73 as a first cover assembling portion for pressing the first insulating cover 30a toward the assembly member W is provided. Thus, the configuration of the first cover assembling portion can be simplified as compared with the case where one is taken out from the housing portion in which the plurality of first insulating covers 30 a are housed and assembled to the assembly member W. The same applies to the second insulating cover 30b.

なお、上記実施形態は、以下のように変更してもよい。
○ ケース１１の形状は直方体状に限定されず、例えば円柱状でもよい。この場合、ケース本体１３は有底円筒状であり、蓋１４は円板状である。 The above embodiment may be modified as follows.
The shape of the case 11 is not limited to a rectangular shape, and may be, for example, a cylindrical shape. In this case, the case body 13 has a cylindrical shape with a bottom, and the lid 14 has a disk shape.

○ 電極組立体１２は、巻回型の電極組立体でもよい。
○ 正極電極２０において、正極活物質層２４は正極金属箔２３の片面に存在してもよい。同様に、負極電極２１において、負極活物質層２７は負極金属箔２６の片面に存在してもよい。 The electrode assembly 12 may be a wound electrode assembly.
In the positive electrode 20, the positive electrode active material layer 24 may be present on one side of the positive electrode metal foil 23. Similarly, in the negative electrode 21, the negative electrode active material layer 27 may be present on one side of the negative electrode metal foil 26.

○ 上記実施形態では、絶縁カバー３０は、２つの第１絶縁カバー３０ａと第２絶縁カバー３０ｂとから構成されていたが、１つの絶縁カバーでもよい。この場合、カバー支持部は１つにしてもよい。   In the above embodiment, the insulating cover 30 is composed of the two first insulating covers 30a and the second insulating cover 30b, but it may be one insulating cover. In this case, the cover support may be one.

○ 絶縁カバー３０の構成は、蓋１４と導電部材１７との間に配置され、導電部材１７と蓋１４とを絶縁できる構成であれば、適宜変更してよい。
○ 上記実施形態では、第１及び第２治具押圧部７２，７６により拡張部材５８の押圧端面５８ａを押圧することで、第１蓋保持部５６ａ及び第２蓋保持部５６ｂを非保持位置に移動させていたが、第１蓋保持部５６ａ及び第２蓋保持部５６ｂを保持位置と非保持位置とで移動させる移動機構は、適宜変更してよい。 The configuration of the insulating cover 30 may be appropriately changed as long as it is disposed between the lid 14 and the conductive member 17 and can insulate the conductive member 17 from the lid 14.
In the above embodiment, by pressing the pressing end surface 58a of the expansion member 58 by the first and second jig pressing portions 72 and 76, the first lid holding portion 56a and the second lid holding portion 56b are in the non-holding position. Although it was made to move, the moving mechanism which moves the 1st lid holding part 56a and the 2nd lid holding part 56b with a holding position and a non-holding position may be changed suitably.

○ 上記実施形態では、第１及び第２蓋保持部５６ａ，５６ｂの一部である第１〜第３保持片５６ｅ〜５６ｇが、ケース本体１３の開口部１３ａに対して蓋１４の位置決めを行う位置決め機構を兼ねていたが、蓋１４を保持する機能だけを備えていてもよい。この場合、搬送方向において蓋押圧部７７よりも上流側に位置決め装置を配置する。   In the above embodiment, the first to third holding pieces 56e to 56g, which are parts of the first and second lid holding parts 56a and 56b, position the lid 14 with respect to the opening 13a of the case main body 13. Although it doubles as the positioning mechanism, it may have only the function of holding the lid 14. In this case, the positioning device is disposed upstream of the lid pressing portion 77 in the transport direction.

○ 治具５１は、第１カバー支持部５５ａを備えなくてもよい。この場合、第１カバー供給工程は省略され、第１カバー組付工程において、第１カバー組付部が、複数の第１絶縁カバー３０ａが収容された図示しない収容部から第１絶縁カバー３０ａを１つ取り出して搬送中の組立部材Ｗに対して組み付ける。   The jig 51 may not include the first cover support 55a. In this case, the first cover supplying step is omitted, and in the first cover assembling step, the first cover assembling portion is moved from the not-shown accommodating portion in which the plurality of first insulating covers 30a are accommodated. One is taken out and assembled to the assembly member W being transported.

○ 治具５１は、第２カバー支持部５５ｂを備えなくてもよい。この場合、第２カバー供給工程は省略され、第２カバー組付工程において、第２カバー組付部が、複数の第２絶縁カバー３０ｂが収容された図示しない収容部から第２絶縁カバー３０ｂを１つ取り出して搬送中の組立部材Ｗに対して組み付ける。   The jig 51 may not include the second cover support 55b. In this case, the second cover supplying step is omitted, and in the second cover assembling step, the second cover assembling portion is moved from the not-shown accommodating portion in which the plurality of second insulating covers 30b are accommodated. One is taken out and assembled to the assembly member W being transported.

○ 第１カバー支持部５５ａ及び第２カバー支持部５５ｂは、ケース本体保持部５３と別体であってもよい。
○ 組立部材保持工程において、蓋１４を保持することで組立部材Ｗを保持する組立部材保持部は、蓋１４の上面１４ｂを吸着する吸着部７５に限定されない。組立部材保持部は、例えば、蓋１４を長手方向の中央部を短手方向の両側から挟持する挟持部であってもよい。 The first cover support 55a and the second cover support 55b may be separate from the case main body holding portion 53.
In the assembly member holding step, the assembly member holding portion holding the assembly member W by holding the lid 14 is not limited to the suction portion 75 suctioning the upper surface 14 b of the lid 14. The assembly member holding portion may be, for example, a holding portion that holds the central portion of the lid 14 in the longitudinal direction from both sides in the lateral direction.

○ 蓋押圧工程の後に、例えば、絶縁検査をする工程など、他の工程を追加してもよい。この場合、追加する工程についても、治具５１を搬送しながら行われるものとする。
○ 蓄電装置は、例えばキャパシタなど、二次電池以外の蓄電装置にも適用可能である。 ○ After the lid pressing step, another step such as a step of insulating inspection may be added. In this case, the additional process is also performed while transporting the jig 51.
The power storage device is also applicable to power storage devices other than secondary batteries, such as capacitors.

○ 二次電池１０は、リチウムイオン二次電池以外の他の二次電池であってもよい。要は、正極用の活物質と負極用の活物質との間をイオンが移動するとともに電荷の教授を行うものであればよい。   The secondary battery 10 may be another secondary battery other than a lithium ion secondary battery. The point is that the ions move between the active material for the positive electrode and the active material for the negative electrode and the charge is taught.

１０…蓄電装置としての二次電池、１１…ケース、１２…電極組立体、１２ａ…タブ側端面、１３…ケース本体、１３ａ…開口部、１３ｂ…底壁、１３ｃ…側壁としての長側壁、１３ｄ…側壁としての短側壁、１３ｅ…先端面、１４…蓋、１４ａ…内面としての下面、１５…電極端子としての正極端子、１６…電極端子としての負極端子、１７…導電部材、２０…電極としての正極電極、２１…電極としての負極電極、２５…タブとしての正極タブ、２５ａ…タブ群としての正極タブ群、２８…タブとしての負極タブ、２８ａ…タブ群としての負極タブ群、３０…絶縁カバー、３０ａ…絶縁カバーとしての第１絶縁カバー、３０ｂ…絶縁カバーとしての第２絶縁カバー、Ｗ…組立部材、５０…二次電池の製造装置としての蓄電装置の製造装置、５１…治具、５３…ケース本体保持部、５５…カバー支持部、５６ａ…蓋保持部としての第１蓋保持部、５６ｂ…蓋保持部としての第２蓋保持部、７１…アーム部としての第１アーム部、７３…カバー組付部としての第１カバー組付部、７５…組立部材保持部としての吸着部、７７…蓋押圧部、８０…搬送装置。
DESCRIPTION OF SYMBOLS 10 Secondary battery as an electrical storage device 11 Case 12 electrode assembly 12a tab end face 13 Case main body 13a Opening 13b Bottom wall 13c Long side wall as side wall 13d ... short side wall as side wall, 13e ... tip surface, 14 ... lid, 14a ... lower surface as inner surface, 15 ... positive electrode terminal as electrode terminal, 16 ... negative electrode terminal as electrode terminal, 17 ... conductive member, 20 ... as electrode , A cathode electrode as an electrode, a cathode tab as a tab, a cathode tab group as a tab group, a cathode tab as a tab group, an anode tab as a tab, an anode tab group as a tab group, a cathode group as a tab group, Insulating cover, 30a: first insulating cover as insulating cover, 30b: second insulating cover as insulating cover, W: assembly member, 50: manufacturing apparatus of power storage device as manufacturing apparatus of secondary battery Reference Signs List 51 jig, 53 case main body holding portion 55 cover supporting portion 56a first lid holding portion as lid holding portion 56b second lid holding portion as lid holding portion 71 as arm portion First arm portion 73: first cover assembling portion as a cover assembling portion 75: suction portion as an assembly member holding portion 77: lid pressing portion 80: conveying device

Claims (6)

正極と負極の電極が絶縁された状態で積層され、かつ前記電極から突出したタブが同じ極性同士で積層されたタブ群を有する電極組立体と、
前記電極組立体を収容するケース本体、及び前記ケース本体の開口部を閉塞する板状の蓋を有するケースと、
前記蓋に固定され、前記電極組立体と電気を授受する電極端子と、
同じ極性の前記タブ群と前記電極端子とを電気的に接続するとともに、前記蓋と、該蓋の内面に対向し、かつ前記タブ群が存在する前記電極組立体のタブ側端面との間に配置された一対の導電部材と、
前記蓋と前記導電部材との間に配置され、両者を絶縁する絶縁カバーと、
を備え、
前記ケース本体は、底壁と前記底壁の縁部から立設する側壁とを有し、
前記電極組立体と前記蓋と前記電極端子と前記導電部材とは、組立部材として一体化されている蓄電装置の製造装置であって、
前記ケース本体を保持するケース本体保持部、及び前記蓋を保持可能な蓋保持部を有する治具と、
前記治具を連続搬送する搬送装置と、
前記治具と併走しながら、前記ケース本体保持部に保持された前記ケース本体内に前記組立部材の電極組立体の一部を挿入するアーム部と、
前記治具の搬送方向において前記アーム部よりも下流側に配置され、前記治具と併走しながら前記組立部材に対して前記絶縁カバーを組み付けるカバー組付部と、
前記治具の搬送方向において前記カバー組付部よりも下流側に配置され、前記治具と併走しながら前記組立部材の前記蓋を保持する組立部材保持部と、
前記治具の搬送方向において前記組立部材保持部よりも下流側に配置され、前記治具と併走しながら前記組立部材の前記蓋を前記ケース本体に向けて押圧することで、前記電極組立体、前記導電部材、及び前記絶縁カバーを前記ケース本体内に収容し、前記蓋により前記ケース本体の開口部を閉塞する蓋押圧部と、
を備え、
前記蓋保持部は、前記電極組立体の一部が前記ケース本体内に挿入されると、前記電極組立体のタブ側端面が前記ケース本体の側壁の先端面よりも上側に位置するように前記蓋を保持する保持位置に移動し、前記組立部材保持部により前記蓋が保持されると、前記蓋を保持しない非保持位置に移動することを特徴とする蓄電装置の製造装置。 An electrode assembly having a tab group in which electrodes of a positive electrode and a negative electrode are stacked in an insulated state, and tabs protruding from the electrodes are stacked with the same polarity;
A case main body for housing the electrode assembly, and a case having a plate-like lid closing an opening of the case main body;
An electrode terminal fixed to the lid and exchanging electricity with the electrode assembly;
While electrically connecting the tab group of the same polarity and the electrode terminal, between the lid and the tab-side end face of the electrode assembly facing the inner surface of the lid and in which the tab group is present A pair of conductive members disposed;
An insulating cover disposed between the lid and the conductive member to insulate them from each other;
Equipped with
The case body has a bottom wall and a side wall erected from an edge of the bottom wall,
A manufacturing apparatus of a power storage device in which the electrode assembly, the lid, the electrode terminal, and the conductive member are integrated as an assembly member,
A jig having a case main body holding portion for holding the case main body, and a lid holding portion capable of holding the lid;
A conveying device for continuously conveying the jig;
An arm portion for inserting a part of the electrode assembly of the assembly member into the case main body held by the case main body holding portion while running parallel to the jig;
A cover assembling portion disposed downstream of the arm portion in the conveyance direction of the jig, and assembling the insulating cover to the assembly member while running parallel to the jig;
An assembly member holding unit disposed downstream of the cover assembling unit in the conveyance direction of the jig and holding the lid of the assembly member while running parallel to the jig;
The electrode assembly is disposed downstream of the assembly member holding portion in the conveyance direction of the jig, and pressing the lid of the assembly member toward the case main body while running parallel to the jig, A lid pressing portion that accommodates the conductive member and the insulating cover in the case main body and closes the opening of the case main body with the lid;
Equipped with
The lid holding portion is configured such that when a part of the electrode assembly is inserted into the case main body, the tab side end face of the electrode assembly is positioned above the tip end surface of the side wall of the case main body. The apparatus for manufacturing a storage device characterized in that the lid is moved to a holding position for holding the lid, and when the lid is held by the assembly member holding portion, the lid is moved to a non-holding position not holding the lid. 前記蓋保持部は、前記保持位置で前記ケース本体の開口部に対して前記蓋を位置決めする位置決め機構を備える請求項１に記載の蓄電装置の製造装置。   The apparatus for manufacturing a power storage device according to claim 1, wherein the lid holding unit includes a positioning mechanism that positions the lid with respect to the opening of the case body at the holding position. 前記治具は、前記ケース本体保持部より外側で前記絶縁カバーを支持するカバー支持部を備え、
前記カバー支持部は、前記電極の積層方向から見て、前記蓋の内面と前記電極組立体のタブ側端面との間に重なる位置にあり、
前記カバー組付部は、前記カバー支持部に支持された前記絶縁カバーを前記組立部材に向けて押圧するカバー押圧部である請求項１又は請求項２に記載の蓄電装置の製造装置。 The jig includes a cover support portion for supporting the insulating cover outside the case main body holding portion,
The cover support portion is positioned to overlap between the inner surface of the lid and the tab-side end surface of the electrode assembly when viewed in the stacking direction of the electrodes.
The apparatus according to claim 1, wherein the cover assembling unit is a cover pressing unit configured to press the insulating cover supported by the cover support unit toward the assembly member. 正極と負極の電極が絶縁された状態で積層され、かつ前記電極から突出したタブが同じ極性同士で積層されたタブ群を有する電極組立体と、
前記電極組立体を収容するケース本体、及び前記ケース本体の開口部を閉塞する板状の蓋を有するケースと、
前記蓋に固定され、前記電極組立体と電気を授受する電極端子と、
同じ極性の前記タブ群と前記電極端子とを電気的に接続するとともに、前記蓋と、該蓋の内面に対向し、かつ前記タブ群が存在する前記電極組立体のタブ側端面との間に配置された一対の導電部材と、
前記蓋と前記導電部材との間に配置され、両者を絶縁する絶縁カバーと、
を備え、
前記ケース本体は、底壁と前記底壁の縁部から立設する側壁とを有し、
前記電極組立体と前記蓋と前記電極端子と前記導電部材とは、組立部材として一体化されている蓄電装置の製造方法であって、
搬送装置によって、前記ケース本体を保持するケース本体保持部、及び前記蓋を保持可能な蓋保持部を有する治具を連続搬送する搬送工程と、
前記治具と併走するアーム部が、前記ケース本体保持部に保持された前記ケース本体内に前記組立部材の電極組立体の一部を挿入する電極組立体挿入工程と、
前記治具と併走するカバー組付部が、前記組立部材に対して前記絶縁カバーを組み付けるカバー組付工程と、
前記治具と併走する組立部材保持部が、前記組立部材の前記蓋を保持する組立部材保持工程と、
前記治具と併走する蓋押圧部が、前記組立部材の前記蓋を前記ケース本体に向けて押圧することで、前記電極組立体、前記導電部材、及び前記絶縁カバーを前記ケース本体内に収容し、前記蓋により前記ケース本体の開口部を閉塞する蓋押圧工程と、
を備え、
前記蓋保持部は、前記電極組立体の一部が前記ケース本体内に挿入されると、前記電極組立体のタブ側端面が前記ケース本体の側壁の先端面よりも上側に位置するように前記蓋を保持する保持位置に移動し、前記組立部材保持部により前記蓋が保持されると、前記蓋を保持しない非保持位置に移動することを特徴とする蓄電装置の製造方法。 An electrode assembly having a tab group in which electrodes of a positive electrode and a negative electrode are stacked in an insulated state, and tabs protruding from the electrodes are stacked with the same polarity;
A case main body for housing the electrode assembly, and a case having a plate-like lid closing an opening of the case main body;
An electrode terminal fixed to the lid and exchanging electricity with the electrode assembly;
While electrically connecting the tab group of the same polarity and the electrode terminal, between the lid and the tab-side end face of the electrode assembly facing the inner surface of the lid and in which the tab group is present A pair of conductive members disposed;
An insulating cover disposed between the lid and the conductive member to insulate them from each other;
Equipped with
The case body has a bottom wall and a side wall erected from an edge of the bottom wall,
A method of manufacturing a power storage device, wherein the electrode assembly, the lid, the electrode terminal, and the conductive member are integrated as an assembly member,
A conveying step of continuously conveying a jig having a case main body holding portion for holding the case main body and a lid holding portion capable of holding the lid by the conveying device;
An electrode assembly inserting step of inserting a part of the electrode assembly of the assembly member into the case main body held by the case main body holding portion by an arm portion co-traveling with the jig;
A cover assembling step of assembling the insulating cover to the assembling member, and a cover assembling portion co-traveling with the jig;
An assembly member holding step of holding the lid of the assembly member by the assembly member holding portion co-traveling with the jig;
The lid pressing portion co-traveling with the jig presses the lid of the assembly member toward the case main body to accommodate the electrode assembly, the conductive member, and the insulating cover in the case main body. A lid pressing step of closing the opening of the case body by the lid;
Equipped with
The lid holding portion is configured such that when a part of the electrode assembly is inserted into the case main body, the tab side end face of the electrode assembly is positioned above the tip end surface of the side wall of the case main body. A method of manufacturing a power storage device comprising: moving to a holding position for holding a lid, and moving the lid to a non-holding position not holding the lid when the lid is held by the assembly member holding portion. 前記蓋は、前記保持位置にある前記蓋保持部に保持されることで、前記ケース本体の開口部に対して位置決めされる請求項４に記載の蓄電装置の製造方法。   The method for manufacturing a power storage device according to claim 4, wherein the lid is positioned with respect to the opening of the case main body by being held by the lid holding portion in the holding position. 前記治具は、前記ケース本体保持部より外側で前記絶縁カバーを支持するカバー支持部を備え、
前記カバー支持部は、前記電極の積層方向から見て、前記蓋の内面と前記電極組立体のタブ側端面との間に重なる位置にあり、
前記カバー組付工程では、前記カバー支持部に支持された前記絶縁カバーを前記組立部材に向けて押圧する請求項４又は請求項５に記載の蓄電装置の製造方法。
The jig includes a cover support portion for supporting the insulating cover outside the case main body holding portion,
The cover support portion is positioned to overlap between the inner surface of the lid and the tab-side end surface of the electrode assembly when viewed in the stacking direction of the electrodes.
The method for manufacturing the power storage device according to claim 4, wherein the insulating cover supported by the cover support portion is pressed toward the assembly member in the cover assembling step.
JP2017210710A 2017-10-31 2017-10-31 Manufacturing apparatus of power storage device and manufacturing method of power storage device Pending JP2019083151A (en)

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CN114473516A (en) * 2022-01-13 2022-05-13 湖州海悦智能科技有限公司 Portal frame type battery cast-weld system
JP2023519630A (en) * 2020-04-09 2023-05-11 寧徳時代新能源科技股▲分▼有限公司 End cover assemblies, battery cells, battery packs and devices
JP7430807B2 (en) 2020-08-17 2024-02-13 寧徳時代新能源科技股▲分▼有限公司 Battery cells, batteries, battery cell manufacturing methods and devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023519630A (en) * 2020-04-09 2023-05-11 寧徳時代新能源科技股▲分▼有限公司 End cover assemblies, battery cells, battery packs and devices
JP7467674B2 (en) 2020-04-09 2024-04-15 寧徳時代新能源科技股▲分▼有限公司 End cover assembly, battery cell, battery pack and device
JP7430807B2 (en) 2020-08-17 2024-02-13 寧徳時代新能源科技股▲分▼有限公司 Battery cells, batteries, battery cell manufacturing methods and devices
CN114473516A (en) * 2022-01-13 2022-05-13 湖州海悦智能科技有限公司 Portal frame type battery cast-weld system

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