CN203288675U - Flexible package lithium ion battery cell pressure welding structure - Google Patents

Flexible package lithium ion battery cell pressure welding structure Download PDF

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Publication number
CN203288675U
CN203288675U CN2013203283446U CN201320328344U CN203288675U CN 203288675 U CN203288675 U CN 203288675U CN 2013203283446 U CN2013203283446 U CN 2013203283446U CN 201320328344 U CN201320328344 U CN 201320328344U CN 203288675 U CN203288675 U CN 203288675U
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CN
China
Prior art keywords
lithium ion
pole
ion battery
lug
battery core
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CN2013203283446U
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Chinese (zh)
Inventor
李正广
韩光鑫
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HENAN HUANYU NEW ENERGY TECHNOLOGY Co Ltd
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HENAN HUANYU NEW ENERGY TECHNOLOGY Co Ltd
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Priority to CN2013203283446U priority Critical patent/CN203288675U/en
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    • 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 utility model provides a flexible package lithium ion battery cell pressure welding structure which comprises a battery cell set. The battery cell set is composed of a plurality of flexible package lithium ion battery cells, an electrode pole is arranged on the battery cell set, a through hole is formed in the electrode pole, the two sides of the electrode pole are provided with electrode lugs respectively, and the two electrode lugs are provided with penetrating holes corresponding to the through holes. Electrode lug pressing plates are fixed on the two electrode lugs, and one fixing piece sequentially penetrates through one electrode lug pressing plate, one electrode lug, one electrode pole, the other electrode lug opposite to the electrode pole and the other electrode lug pressing plate opposite to the electrode pole and is fixed through a fixing external member. According to the flexible package lithium ion battery cell pressure welding structure, the electrode lugs are connected more firmly and reliably, the contact resistance can be greatly reduced, and the electric conduction capacity can be well kept.

Description

A kind of flexible packing lithium ion battery battery core crimping structure
Technical field
The utility model relates to the lithium ion battery field, refers to especially a kind of flexible packing lithium ion battery battery core crimping structure.
Background technology
Lithium ion battery is the very high broad-spectrum battery of new generation of scientific and technological content, is referred to as by people by " the most promising chemical power source ".The characteristics of flexible packing lithium ion battery are the large electric currents of comprehensive liquid lithium ion battery and the low temperature discharge ability is good and the upper unique advantage of the profile of polymer Li-ion battery packing.The medium that it adopts the liquid electrolyte similar to liquid lithium ionic cell to transmit between both positive and negative polarity as lithium ion, adopt the laminated plastics laminated film on the profile packing, thereby reduced production cost, and simplified the technological process of producing, its market potential is huge.
But its version of flexible packing lithium ion battery is different from cylinder and steel aluminum hull rectangular cell and other forms of lithium battery, the flexible packing lithium ion battery battery core be square and with two rectangle lugs, external packing aluminum plastic film structural strength is low and the overall dimension tolerance is larger, and composite type is electriferous state, therefore causes the battery core group technology to be difficult for realizing.
It is split type that the power lithium-ion battery that uses in the New energy electric vehicle all adopts the both positive and negative polarity lug of flexible packing lithium ion battery battery core to connect the pole of using, this pole has a plurality of tie points, do not slot thereby increased on unsteadiness and contact resistance and lug, easily produce the curved shape of lug pressing plate crimping distortion thereby adopt the lug bolts at two ends to compress during crimping, cause the effective conductive area of lug crimping to reduce contact resistance and become large.
The utility model content
The utility model proposes a kind of lug connection more firm, reliable, and can greatly reduce contact resistance, the flexible packing lithium ion battery battery core crimping structure of fabulous maintenance conductive capability.
The technical solution of the utility model is achieved in that
A kind of flexible packing lithium ion battery battery core crimping structure comprises: the flexible packing lithium ion battery battery core of a plurality of parallel connections forms the battery core group, and the battery core group is provided with pole; Described pole is provided with through hole; A lug is fixed respectively in described pole both sides; Two described lugs are provided with perforation, and described perforation is corresponding with described through hole; Two described lug sides all are fixed with the lug pressing plate; One fixture is fixed by fixed sleeve part after passing successively the lug, lug pressing plate of described lug pressing plate, lug, pole and pole opposite side.
Preferably, described fixture is bolt, and described fixed sleeve part is stop nut.
Preferably, also be provided with flat shim; Described flat shim is located at the outside of described lug pressing plate, and by described fixture and described lug pressing plate, is fixed together.
Preferably, described perforation is U-shaped groove.
Preferably, at least two of described perforation, corresponding described fixture also is provided with two; And fixture is all by fixing by fixed sleeve part after the lug pressing plate by described perforation and described through hole and offside after described lug pressing plate.
Preferably, described pole is the whole disjunctor pole of positive and negative terminals.
Preferably, described positive terminal is that the fine aluminium material is made; Described negative pole pole is that fine copper or fine copper nickel plating are made.
Preferably, described flexible packing lithium ion battery battery core is connected in parallel side by side and forms the battery core group.
This practical flexible packing lithium ion battery battery core, by using fixture that lug pressing plate, lug and pole are fixed together reliably, guaranteed connecting terminal and effective conductive contact area, and fixture is difficult for getting loose; Greatly reduce contact resistance, and stable, reliable conductive capability can be provided.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the perspective view of a kind of flexible packing lithium ion battery battery core of the utility model crimping structure;
Fig. 2 is the perspective view of the utility model pole;
Fig. 3 is the perspective view of the utility model lug pressing plate;
Fig. 4 is the planar structure schematic diagram of the utility model lug;
Fig. 5 is the side structure schematic diagram of a kind of flexible packing lithium ion battery battery core of the utility model crimping structure.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment that obtains, and all belong to the scope of the utility model protection.
See also Fig. 1 to Fig. 5; A kind of flexible packing lithium ion battery battery core crimping structure comprises: the flexible packing lithium ion battery battery core of a plurality of parallel connections forms battery core group 1, and battery core group 1 is provided with pole 2; Described pole 2 is provided with through hole 3; A lug 4 is fixed respectively in described pole 2 both sides; Two described lugs 4 are provided with perforation 5, and described perforation 5 is corresponding with described through hole 3; Two described lug 4 sides all are fixed with lug pressing plate 6; It is rear fixing by fixed sleeve part 8 that one fixture 7 passes lug 4, the lug pressing plate 6 of described lug pressing plate 6, lug 4, pole 2 and pole 2 opposite sides successively.Wherein be provided with equally the opening 9 that passes for fixture 7 on lug pressing plate 6; In the time of fixedly, perforation 5 and the opening 9 of process opposite side can be fixed again after opening 9, perforation 5 and through hole 3 successively with fixture 7.
Preferably, described fixture 7 is bolt, and described fixed sleeve part 8 is stop nut; Certainly fixture 7 is not limited to this, and it can also be that fixture 7 also can pin, and fixed sleeve part 8 is the holder interference engagement.
Preferably, also be provided with flat shim 10; Described flat shim 10 is located at the outside of described lug pressing plate 6, and by described fixture 7, with described lug pressing plate 6, is fixed together; Flat shim 10 can effectively increase the crimping effective area, and while avoiding lug pressing plate 6 to be subjected to fixture 7 pressure, area is too small and cause lug pressing plate 6 distortion, can not effectively compress lug 4.
Preferably, described perforation 5 is U-shaped groove; U-shaped structure can play better fixed effect.
Preferably, 5 at least two of described perforation, corresponding described fixture 7 also is provided with two; And fixture 7 is all by rear fixing by fixed sleeve part 8 with the lug pressing plate 6 of offside by described perforation 5 and described through hole 3 after described lug pressing plate 6; Perforation 5 arrange and can select voluntarily according to the size of pole 2, and best two perforation 5 are arranged, thus can play better balance fixed effect.
Preferably, described pole 2 is the whole disjunctor pole 2 of positive and negative terminals 2.
Preferably, described positive terminal 2 is made for the fine aluminium material; Described negative pole pole 2 is made for fine copper or fine copper nickel plating.
Preferably, described flexible packing lithium ion battery battery core is connected in parallel side by side and forms battery core group 1.
The utility model is take the lug with U-shaped groove as example, its assembling process is described, first with several parallel combinations side by side of flexible packing lithium ion electric core, to cling to side by side respectively the both sides of pole with the lug of two " U " type groove again, then flat shim is enclosed within on bolt respectively successively by the combination of the bolt through-hole on the lug pressing plate, then again the bolt of this assembly is passed lug and pole, lug and lug pressing plate through the pole offside puts respectively flat shim and stop nut more again, tightens stop nut with torque wrench and completes the combination of cell polar ear and pole.Such combining structure mode greatly reduces contact resistance and stable, reliable, has guaranteed fabulous good conductive ability.Can be widely used in the fields such as motorcycle, electric automobile, communication energy storage, microgrid energy storage, large-scale honourable energy storage.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (8)

1. a flexible packing lithium ion battery battery core crimping structure, is characterized in that, comprising: the flexible packing lithium ion battery battery core of a plurality of parallel connections forms the battery core group, and the battery core group is provided with pole; Described pole is provided with through hole; A lug is fixed respectively in described pole both sides; Two described lugs are provided with perforation, and described perforation is corresponding with described through hole; Two described lug sides all are fixed with the lug pressing plate; One fixture is fixed by fixed sleeve part after passing successively the lug, lug pressing plate of described lug pressing plate, lug, pole and pole opposite side.
2. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 1, is characterized in that, described fixture is bolt, and described fixed sleeve part is stop nut.
3. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 1 or 2, is characterized in that, also is provided with flat shim; Described flat shim is located at the outside of described lug pressing plate, and by described fixture and described lug pressing plate, is fixed together.
4. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 1, is characterized in that, described perforation is U-shaped groove.
5. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 1, is characterized in that, at least two of described perforation, and corresponding described fixture also is provided with two; And fixture is all by fixing by fixed sleeve part after the lug pressing plate by described perforation and described through hole and offside after described lug pressing plate.
6. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 1, is characterized in that, described pole is the whole disjunctor pole of positive and negative terminals.
7. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 6, is characterized in that, described positive terminal is that the fine aluminium material is made; Described negative pole pole is that fine copper or fine copper nickel plating are made.
8. a kind of flexible packing lithium ion battery battery core crimping structure as claimed in claim 1, is characterized in that, described flexible packing lithium ion battery battery core is connected in parallel side by side and forms the battery core group.
CN2013203283446U 2013-06-06 2013-06-06 Flexible package lithium ion battery cell pressure welding structure Active CN203288675U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203283446U CN203288675U (en) 2013-06-06 2013-06-06 Flexible package lithium ion battery cell pressure welding structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203283446U CN203288675U (en) 2013-06-06 2013-06-06 Flexible package lithium ion battery cell pressure welding structure

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CN203288675U true CN203288675U (en) 2013-11-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105977440A (en) * 2016-07-06 2016-09-28 厦门宝龙新能源发展有限公司 Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105977440A (en) * 2016-07-06 2016-09-28 厦门宝龙新能源发展有限公司 Positive and negative electrode lug connection structure for multi-cell group of flexible-package polymer Li-ion battery

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Effective date of registration: 20190729

Granted publication date: 20131113

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