CN201570552U - Stacked lithium ion battery - Google Patents
Stacked lithium ion battery Download PDFInfo
- Publication number
- CN201570552U CN201570552U CN2010201026557U CN201020102655U CN201570552U CN 201570552 U CN201570552 U CN 201570552U CN 2010201026557 U CN2010201026557 U CN 2010201026557U CN 201020102655 U CN201020102655 U CN 201020102655U CN 201570552 U CN201570552 U CN 201570552U
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- battery
- layer
- lithium ion
- ion battery
- stacked
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to the technical field of the battery, in particular to an improved structure for a stacked lithium ion battery. The stacked lithium ion battery comprises a battery core which is formed by orderly stacking anode and cathode slices separated with a separating film and a battery shell for packaging the battery core, wherein an electrolyte is arranged between the anode slice and the separating film and between the cathode slice and the separating film; a metal protection layer is arranged on the starting layer or the last layer of the stacked battery core; and the separating film is arranged between the metal protection layer and the starting layer or the last layer. The metal protection layer is arranged on the starting layer or the last layer of the stacked battery core, so when the battery is short-circuited under the external impact, most current will pass through the metal protection layer and the most heat generated by the short-circuit disperses on the protection layer. Through the structure, the battery is prevented from being burnt due to the heat congregation in the battery, the safety of the battery is promoted and the use safety of the customer is ensured.
Description
Technical field
The utility model relates to the battery technology field, specifically a kind of improvement of stacked lithium ion battery structure.
Background technology
In the last few years, the development of lithium ion battery gets more and more people's extensive concerning, especially the power-type lithium ion battery that has characteristics such as discharging current is big, good stability, fail safe is good, capacity is big, be widely used in multiple electric tool and power toy field, and vast application prospect arranged in fields such as EV (electric automobile)/HEV (mixed power electric car), electronic boat, electric bicycles.
Along with the rise of EV, HEV lithium ion battery, the cell safety problem has become a problem that presses for solution.The used lithium ion battery of EV, HEV adopts the frame mode of lamination mostly, i.e. a finished product battery is formed in positive plate, electrolyte, barrier film, the negative plate back encapsulation that gathers into folds in layer.This class battery is done the time spent being subjected to external force, such as acupuncture, weight bump etc., be easy to be short-circuited between positive plate in the battery and the negative plate, because contact resistance is evenly distributed, the circuital current of battery inside is also the same big with battery circuit external electric current, cause the battery internal heat to assemble and make battery burning even blast with regard to being easy to so, the cell safety accident takes place.So the security performance that improves lithium ion battery ensures that the consumer's is safe in utilization very urgent.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, safe and reliable stacked lithium ion battery.
For solving the problems of the technologies described above, the utility model is realized by the following technical solutions:
Design a kind of stacked lithium ion battery; comprise that the positive and negative plate of being isolated by barrier film stacks gradually battery that forms and the battery case that battery is encapsulated; between positive plate and barrier film, negative plate and barrier film, be provided with electrolyte; the battery initial layers and/or the end layer that are laminated are provided with a coat of metal, are provided with barrier film between coat of metal and initial layers, the end layer.
Coat of metal described in the such scheme is blank copper foil layer or blank aluminium foil layer.Described initial layers, end layer can be positive plate or negative plate, as initial layers and end layer positive plate or negative plate have only single face to have active material.
The beneficial effects of the utility model are:
The utility model is initial battery; end layer is provided with coat of metal outward; because the initial layers and the end layer of electric core are to have only the positive plate or the negative plate of single face active material; the battery that the electric core of this structure is made; make battery when being subjected to external impacts and being short-circuited; because the contact resistance of coat of metal and the metal forming contact resistance that do not apply active material pole piece and metal forming in the existing core strueture; according to ohm shunting principle; most electric current all can pass through at coat of metal when being short-circuited, and the heat major part that short circuit takes place also will dissipate at protective layer.Therefore this structure can not cause inside battery hot polymerization collection and cause the battery burning, has improved the security performance of battery, has ensured that also the consumer's is safe in utilization.
Description of drawings
Accompanying drawing 1 is the utility model embodiment one internal structure schematic diagram;
Accompanying drawing 2 is the utility model embodiment two internal structure schematic diagrames.
Embodiment
For the ease of those skilled in the art's understanding, the utility model structural principle is further described in detail below in conjunction with specific embodiment and accompanying drawing:
Embodiment one: as accompanying drawing 1; a kind of stacked lithium ion battery; comprise that the positive and negative plate that multi-disc is isolated by barrier film 3 stacks gradually battery that forms and the battery case 7 that battery is encapsulated; between positive plate 1 and barrier film 3, negative plate 2 and barrier film 3, be provided with electrolyte 4; initial, the end layer of battery are the single face positive plate 11 that one side is coated with active material, are provided with a coat of metal 5 again by barrier film 3 on single face positive plate 11.Be to improve security performance, pole piece is stacked to make positive plate 1 not apply the face of polar substances near coat of metal 5 when placing.
In the present embodiment; it is Copper Foil that coat of metal 5 is selected; the blank copper foil layer that the utility model is provided with outside initial layers that superposes and end layer; because blank copper foil layer has the temperature scope of application of good conduction property and broad; make battery when being subjected to external impacts and being short-circuited; most electric current all can pass through at blank copper foil layer, and the heat major part that takes place also will dissipate at blank copper foil layer.The battery of this structure fabrication can not cause inside battery hot polymerization collection and cause burning, ensured that the consumer's is safe in utilization.
Embodiment two: as accompanying drawing 2, a kind of stacked lithium ion battery, comprise that the positive and negative plate that multi-disc is isolated by barrier film 3 stacks gradually battery that forms and the battery case 7 that battery is encapsulated, be provided with electrolyte 4 between positive plate 1 and barrier film 3, negative plate 2 and barrier film 3, initial, the end layer of battery is coated with the single face negative plate 21 of active material for one side.Be provided with a coat of metal 5 again by barrier film on the single face negative plate 21 in similar embodiment 1 present embodiment.Same negative plate 2 does not apply the face of polar substances also will be near coat of metal 5.Here coat of metal selects to use aluminium foil.
The foregoing description only is a preferred implementation of the present utility model, and in addition, the utility model can also have other implementations.For example, initial layers is the single face positive plate, stacked coat of metal on the single face positive plate, and end layer is the single face negative plate, laminated metal protective layer etc. again on the single face negative plate.That is to say that under the prerequisite that does not break away from the utility model design, any conspicuous replacement all should fall within the protection range of the present utility model.
Claims (4)
1. stacked lithium ion battery; comprise that the positive and negative plate of being isolated by barrier film (3) stacks gradually battery that forms and the battery case (7) that battery is encapsulated; between positive plate (1) and barrier film, negative plate (2) and barrier film, be provided with electrolyte (4); it is characterized in that: battery initial layers that is laminated and/or end layer are provided with a coat of metal (5), are provided with barrier film between coat of metal and initial layers, the end layer.
2. stacked lithium ion battery according to claim 1 is characterized in that: described coat of metal is blank copper foil layer or blank aluminium foil layer.
3. stacked lithium ion battery according to claim 2 is characterized in that: described initial layers is positive plate or negative plate, has only single face to have active material as the positive plate or the negative plate of initial layers.
4. stacked lithium ion battery according to claim 2 is characterized in that: described end layer is positive plate or negative plate, has only single face to have active material as the positive plate or the negative plate of end layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201026557U CN201570552U (en) | 2010-01-26 | 2010-01-26 | Stacked lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201026557U CN201570552U (en) | 2010-01-26 | 2010-01-26 | Stacked lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201570552U true CN201570552U (en) | 2010-09-01 |
Family
ID=42662852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201026557U Expired - Lifetime CN201570552U (en) | 2010-01-26 | 2010-01-26 | Stacked lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201570552U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904354A (en) * | 2012-12-25 | 2014-07-02 | 比亚迪股份有限公司 | Lithium ion battery |
| CN103904355A (en) * | 2012-12-25 | 2014-07-02 | 比亚迪股份有限公司 | Lithium ion battery |
| WO2014101479A1 (en) * | 2012-12-25 | 2014-07-03 | Shenzhen Byd Auto R&D Company Limited | Battery |
| US9941505B2 (en) | 2012-12-25 | 2018-04-10 | Byd Company Limited | Battery |
-
2010
- 2010-01-26 CN CN2010201026557U patent/CN201570552U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904354A (en) * | 2012-12-25 | 2014-07-02 | 比亚迪股份有限公司 | Lithium ion battery |
| CN103904355A (en) * | 2012-12-25 | 2014-07-02 | 比亚迪股份有限公司 | Lithium ion battery |
| WO2014101479A1 (en) * | 2012-12-25 | 2014-07-03 | Shenzhen Byd Auto R&D Company Limited | Battery |
| CN103904354B (en) * | 2012-12-25 | 2016-12-28 | 比亚迪股份有限公司 | A kind of lithium ion battery |
| CN103904355B (en) * | 2012-12-25 | 2016-12-28 | 比亚迪股份有限公司 | A kind of lithium ion battery |
| US9748552B2 (en) | 2012-12-25 | 2017-08-29 | Byd Company Limited | Battery having protection components |
| US9941505B2 (en) | 2012-12-25 | 2018-04-10 | Byd Company Limited | Battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |