CN105977440A - Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery - Google Patents

Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery Download PDF

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Publication number
CN105977440A
CN105977440A CN201610526116.8A CN201610526116A CN105977440A CN 105977440 A CN105977440 A CN 105977440A CN 201610526116 A CN201610526116 A CN 201610526116A CN 105977440 A CN105977440 A CN 105977440A
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CN
China
Prior art keywords
positive
negative polarity
battery core
pole piece
lug
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610526116.8A
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Chinese (zh)
Inventor
王晶良
黄华欣
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Xiamen Baolong New Energy Developments Ltd
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Xiamen Baolong New Energy Developments Ltd
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Publication date
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Priority to CN201610526116.8A priority Critical patent/CN105977440A/en
Publication of CN105977440A publication Critical patent/CN105977440A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a positive and negative electrode lug connection structure for a multi-cell group of a flexible-package polymer Li-ion battery. The positive and negative electrode lug connection structure structurally comprises a positioning fixture, multiple cells, a positive plate and a negative plate, wherein positive and negative electrode lugs of each battery cell are provided with conductive electrode poles connected to the positive and negative electrode lugs of the adjacent battery cell; the positive and negative plates are clamped on the positive and negative electrode lugs of the multiple battery cells; the outer ends of the positive and negative electrode lugs of the cells positioned at the uppermost layer and the lowest layer are provided with metal rivets and screw caps, which are matched with each other and penetrate through the positive and negative electrode lugs, the positive and negative plates and the conductive electrode poles. The positive and negative electrode lugs of the multiple battery cells are connected by virtue of the positive and negative plates, the conductive electrode poles and the metal rivets, so the purpose of increasing the capacity and the pressure is achieved, furthermore the assembly efficiency can be greatly improved, and a battery group is good in consistency; during an external packaging process of the battery group, the electrode lugs cannot be influenced, so that the heat-seal edge sealing yield of the battery is greatly improved.

Description

Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups
Technical field
The present invention relates to a kind of lithium ion battery, particularly relate to a kind of Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups.
Background technology
Lithium ion battery since emerging, the advantage such as the energy density being had relative to other secondary cells with it is high, have extended cycle life, self-discharge rate is little, memory-less effect and environmental protection, become the battery of most competitive advantage in field of chemical power source.At present, lithium ion battery is widely used to the fields such as notebook computer, digital product and electric automobile, hybrid vehicle even Aero-Space.
Polymer Li-ion uses aluminum-plastic composite membrane as the flexible packing material of packaging film, has that volume is little, lightweight, the characteristic of safety non-pollution.Size after electrode assembly packaging has the biggest relation with the volume capacity of battery, therefore when design, makes electrode assembly utilize the space of packaging film to greatest extent when packaging as far as possible.In order to reach the purpose of dilatation supercharging, battery is usually by several battery cells and is unified into battery pile, in polymer Li-ion battery, the connected mode of lug part generally uses the artificial mode rolling over lug, by scolding tin, lug is linked together again, not only inefficiency, poor quality, and during scolding tin, high temperature easily pulls PP glue, causes loose contact.
In view of this, the present inventor designs for above-mentioned Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups and does not attains perfect caused many disappearances and inconvenience, and deeply conceives, and actively research improvement has a fling at and develops and design the present invention.
Summary of the invention
It is an object of the invention to provide a kind of assembling efficiently, and the good Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups of concordance can quickly realize the dilatation of battery capacity.
In order to reach above-mentioned purpose, the solution of the present invention is:
nullA kind of Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups,Comprising: multi-disc battery core、One anode pole piece and a cathode pole piece,Described battery core has both positive and negative polarity lug,And each both positive and negative polarity lug is provided with at least one corresponding connecting hole,The connection hole of each both positive and negative polarity lug is equipped with the conductive pole column of the both positive and negative polarity lug being connected to adjacent battery core,A through hole it is respectively equipped with in each conductive pole column,Described anode pole piece is located on the positive pole ear of multi-disc battery core,Described cathode pole piece is located in the negative lug of multi-disc battery core,And anode pole piece is provided with the via corresponding with the connecting hole of positive pole ear,Cathode pole piece is provided with the via corresponding with the connecting hole of negative lug,It is positioned at the both positive and negative polarity lug outer end of the superiors and orlop battery core to be provided with and cooperate and through described both positive and negative polarity lug connecting hole、Described both positive and negative polarity pole piece via and the metal rivet of described conductive pole column through hole and nut.
Further, described metal rivet and nut and be respectively equipped with a lug reinforced sheet between the both positive and negative polarity lug outer end of the superiors and orlop battery core.
Further, described conductive pole column is located on a pole support, and this pole support is insulator.
Further, described anode pole piece and cathode pole piece are respectively the opening U-shape structure towards battery core, and be respectively provided with two connection sheets and a lateral plate, described anode pole piece and cathode pole piece two and connect sheet and be connected with the both positive and negative polarity lug of battery core, each lateral plate is respectively equipped with the bolt arranged in contrast to opening.
Further, it is respectively equipped with a spacer between described anode pole piece and the lateral plate of cathode pole piece and bolt.
Described Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups, also includes that a positioning tool, described multi-disc battery core are located on this positioning tool.
Described Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups, also includes multiple plastic cement frame, and two plastic cement frame sandwiched one battery cores, the both positive and negative polarity lug of each battery core highlights outside plastic cement frame.
Further, each plastic cement frame is provided with the positioning convex point and detent cooperated, and each positioning convex point and detent are symmetrical set in the above and below of each plastic cement frame.
Further, the edge of described each plastic cement frame is provided with multiple fixing holes of correspondence, and is fixed on positioning tool by each plastic cement frame sequentially stacked by multiple locking parts of corresponding fixing hole.
After using said structure, Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups of the present invention uses both positive and negative polarity pole piece, conductive pole column and metal rivet to be connected by the both positive and negative polarity lug of multi-disc battery core, reaches the purpose of increase-volume supercharging.Compare with the mode that battery core is combined of existing artificial folding lug and scolding tin, the present invention can increase substantially efficiency of assembling, and the concordance of stack battery is good, during stack battery outer package, lug is unaffected, and is greatly improved the battery yield at heat seal edge sealing.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the present invention.
Fig. 2 is the front view of the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the top view of the present invention.
Detailed description of the invention
In order to technical scheme is explained further, below by specific embodiment, the present invention will be described in detail.
nullAs shown in Figures 1 to 4,One Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups of the present invention,Comprising: a positioning tool 1、The multi-disc battery core 2 being located on positioning tool 1、One anode pole piece 3 and a cathode pole piece 4,Described battery core 2 has both positive and negative polarity lug 21、22,Both positive and negative polarity lug 21、The both sides of battery core it are respectively arranged on 31,And each both positive and negative polarity lug 21、22 are provided with at least one corresponding connecting hole 211、221,Each both positive and negative polarity lug 21、The connecting hole 211 of 22、The both positive and negative polarity lug 21 being connected to adjacent battery core 2 it is equipped with at 221、The conductive pole column 5 of 22,A through hole 51 it is respectively equipped with in each conductive pole column 5,Each conductive pole column 5 is provided on a pole support 52,This pole support 52 is insulator,As ceramic material can be used,Described anode pole piece 3 is located on the positive pole ear 21 of described battery core 2,Described cathode pole piece 4 is located in the negative lug 22 of described battery core 2,And anode pole piece 3 is provided with the via 31 corresponding with the connecting hole 211 of both positive and negative polarity lug 21,Cathode pole piece 4 is provided with the via 41 corresponding with the connecting hole 221 of negative lug 22,It is positioned at the both positive and negative polarity lug 21 of the superiors and orlop battery core 2、22 outer ends are provided with and cooperate and through described both positive and negative polarity lug 21、22 connecting holes 211、221、Described both positive and negative polarity pole piece 3、4 vias 31、41 and the metal rivet 61 of described conductive pole column 5 through hole 51 and nut 61,In order to avoid both positive and negative polarity lug 21、22,Each metal rivet and both positive and negative polarity lug 21、A lug reinforced sheet 7 it is respectively equipped with between 22.
Described anode pole piece 3 and cathode pole piece 4 are respectively the opening U-shape structure towards battery core 2, and it is respectively provided with two connection sheet 32,42 and lateral plates 33,43, two connection sheets 32,42 of described anode pole piece 3 and cathode pole piece 4 are connected with the both positive and negative polarity lug 21,31 of battery core 2, each lateral plate 33,43 is respectively equipped with the bolt 8 arranged in contrast to opening, being respectively equipped with a spacer 9 between lateral plate 33,43 and the bolt 8 of described anode pole piece 3 and cathode pole piece 4, this spacer 9 plays the effect of support.
In order to protect Soft Roll polymer lithium ion battery electric core 2; improve the service life of battery core 2; Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups of the present invention; also include multiple plastic cement frame 10; the upper and lower side of aforementioned each battery core 2 is folded with a plastic cement frame 10 respectively; the i.e. a piece of battery core of two panels plastic cement frame sandwiched 2, the both positive and negative polarity lug 21,31 of each battery core 2 highlights outside plastic cement frame 10.Each plastic cement frame 10 is provided with at least one positioning convex point 101 and detent 102 cooperated, each positioning convex point 101 and detent claim to be arranged on this plastic cement frame 10 to 102, each plastic cement frame 10 is provided with an accommodation space 103, the edge of each plastic cement frame 10 is provided with multiple fixing holes 104 of correspondence, and by multiple locking parts 105 of corresponding fixing hole 104, each plastic cement frame 10 is fixed on positioning tool 1, described battery core 2 is located in the accommodation space 103 of plastic cement frame 10.
nullDuring assembling,One plastic cement frame 10 is placed on positioning tool 1,Then battery core 2 is put into the accommodation space 103 of this plastic cement frame 10,The lug of battery core 2 highlights outside this plastic cement frame 10,The detent 102 of the plastic cement frame 10 that positioning convex point 101 or the detent 102 of another plastic cement frame 10 are correspondingly placed on positioning tool 1 or positioning convex point 101,Two plastic cement frames 10 are made this battery core 2 to be folded in the accommodation space 103 of plastic cement frame 103,Put a piece of battery core 2 again to plastic cement frame 3 above,The both positive and negative polarity lug 21 of two battery cores 2、22 corresponding both positive and negative polarity lugs 21、The connecting hole 211 of 22、Conductive pole column 5 is placed in 221 positions,Through hole 51 and the connecting hole 211 of conductive pole column 5、221 is corresponding,Multi-disc battery core 2 and plastic cement frame 10 once stack,Anode pole piece 3 and cathode pole piece 4 are respectively arranged on the both positive and negative polarity lug 21 of multi-disc battery core 2、On 22,And make the via 31 of anode pole piece 3 and cathode pole piece 4、41 with the through hole 51 of conductive pole column 5 and both positive and negative polarity lug 21、The connecting hole 211 of 22、221 is corresponding.The hole, location 104 finally multiple locking parts 105 being corresponding in turn on plastic cement frame 10, and multiple plastic cement 10 frames are locked on positioning tool 1, metal rivet 61 is locked together with nut 62 after each both positive and negative polarity lug 21,22 connecting hole 211,221, each both positive and negative polarity pole piece 3,4 via 31,41 and each conductive pole column 5 through hole 51.
Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups of the present invention uses both positive and negative polarity pole piece 3,4, conductive electrode 5 and metal rivet 61 to be connected by the both positive and negative polarity lug 21,22 of multi-disc battery core 2, reaches the purpose of increase-volume supercharging.Compare with the mode that battery core is combined of existing artificial folding lug and scolding tin, the present invention can increase substantially efficiency of assembling, and the concordance of stack battery is good, during stack battery outer package, lug is unaffected, and is greatly improved the battery yield at heat seal edge sealing.
Above-described embodiment and the product form of the graphic and non-limiting present invention and style, suitably change that it is done by any person of an ordinary skill in the technical field or modify, all should be regarded as the patent category without departing from the present invention.

Claims (9)

  1. null1. a Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups,It is characterized in that,Including: multi-disc battery core、One anode pole piece and a cathode pole piece,Described battery core has both positive and negative polarity lug,And each both positive and negative polarity lug is provided with at least one corresponding connecting hole,The connection hole of each both positive and negative polarity lug is equipped with the conductive pole column of the both positive and negative polarity lug being connected to adjacent battery core,A through hole it is respectively equipped with in each conductive pole column,Described anode pole piece is located on the positive pole ear of multi-disc battery core,Described cathode pole piece is located in the negative lug of multi-disc battery core,And anode pole piece is provided with the via corresponding with the connecting hole of positive pole ear,Cathode pole piece is provided with the via corresponding with the connecting hole of negative lug,It is positioned at the both positive and negative polarity lug outer end of the superiors and orlop battery core to be provided with and cooperate and through described both positive and negative polarity lug connecting hole、Described both positive and negative polarity pole piece via and the metal rivet of described conductive pole column through hole and nut.
  2. 2. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 1, it is characterised in that: described metal rivet and nut and between the both positive and negative polarity lug outer end of the superiors and orlop battery core, be respectively equipped with a lug reinforced sheet.
  3. 3. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 1, it is characterised in that: described conductive pole column is located on a pole support, and this pole support is insulator.
  4. 4. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 1, it is characterized in that: described anode pole piece and cathode pole piece are respectively the opening U-shape structure towards battery core, and it is respectively provided with two connection sheets and a lateral plate, described anode pole piece and cathode pole piece two connect sheet and are connected with the both positive and negative polarity lug of battery core, and each lateral plate is respectively equipped with the bolt arranged in contrast to opening.
  5. 5. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 4, it is characterised in that: it is respectively equipped with a spacer between described anode pole piece and the lateral plate of cathode pole piece and bolt.
  6. 6. the Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as described in any one in claim 1 to 5, it is characterised in that: also include that a positioning tool, described multi-disc battery core are located on this positioning tool.
  7. 7. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 6, it is characterised in that: also including multiple plastic cement frame, two plastic cement frame sandwiched one battery cores, the both positive and negative polarity lug of each battery core highlights outside plastic cement frame.
  8. 8. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 7, it is characterized in that: each plastic cement frame is provided with the positioning convex point and detent cooperated, each positioning convex point and detent are symmetrical set in the above and below of each plastic cement frame.
  9. 9. Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups as claimed in claim 8, it is characterized in that: the edge of described each plastic cement frame is provided with multiple fixing holes of correspondence, and is fixed on positioning tool by each plastic cement frame sequentially stacked by multiple locking parts of corresponding fixing hole.
CN201610526116.8A 2016-07-06 2016-07-06 Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery Pending CN105977440A (en)

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Application Number Priority Date Filing Date Title
CN201610526116.8A CN105977440A (en) 2016-07-06 2016-07-06 Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery

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Application Number Priority Date Filing Date Title
CN201610526116.8A CN105977440A (en) 2016-07-06 2016-07-06 Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery

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CN105977440A true CN105977440A (en) 2016-09-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394093A (en) * 2017-07-24 2017-11-24 珠海格力电器股份有限公司 Battery core connection strap, battery connecting construction and battery combination
CN109585895A (en) * 2017-09-28 2019-04-05 江苏津谊新能源科技有限公司 A kind of single battery assembling jig
CN111697192A (en) * 2020-03-04 2020-09-22 万向一二三股份公司 Connection structure of laminate polymer battery utmost point ear and electric core
CN112602230A (en) * 2018-08-22 2021-04-02 微软技术许可有限责任公司 Folding lug for connecting ultrathin battery units

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203288675U (en) * 2013-06-06 2013-11-13 河南环宇赛尔新能源科技有限公司 Flexible package lithium ion battery cell pressure welding structure
CN203644849U (en) * 2013-12-19 2014-06-11 北京有色金属研究总院 Traction battery module structure
CN204303929U (en) * 2014-11-14 2015-04-29 山东神工海特电子科技有限公司 Novel high-capacity soft package lithium battery group
CN205863279U (en) * 2016-07-06 2017-01-04 厦门宝龙新能源发展有限公司 Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203288675U (en) * 2013-06-06 2013-11-13 河南环宇赛尔新能源科技有限公司 Flexible package lithium ion battery cell pressure welding structure
CN203644849U (en) * 2013-12-19 2014-06-11 北京有色金属研究总院 Traction battery module structure
CN204303929U (en) * 2014-11-14 2015-04-29 山东神工海特电子科技有限公司 Novel high-capacity soft package lithium battery group
CN205863279U (en) * 2016-07-06 2017-01-04 厦门宝龙新能源发展有限公司 Soft Roll polymer Li-ion battery multi-disc battery core both positive and negative polarity electrode tab connection structure in groups

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394093A (en) * 2017-07-24 2017-11-24 珠海格力电器股份有限公司 Battery core connection strap, battery connecting construction and battery combination
CN109585895A (en) * 2017-09-28 2019-04-05 江苏津谊新能源科技有限公司 A kind of single battery assembling jig
CN112602230A (en) * 2018-08-22 2021-04-02 微软技术许可有限责任公司 Folding lug for connecting ultrathin battery units
CN111697192A (en) * 2020-03-04 2020-09-22 万向一二三股份公司 Connection structure of laminate polymer battery utmost point ear and electric core

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Application publication date: 20160928