CN2578996Y - Lithium ionic accumulator - Google Patents
Lithium ionic accumulator Download PDFInfo
- Publication number
- CN2578996Y CN2578996Y CN02285475U CN02285475U CN2578996Y CN 2578996 Y CN2578996 Y CN 2578996Y CN 02285475 U CN02285475 U CN 02285475U CN 02285475 U CN02285475 U CN 02285475U CN 2578996 Y CN2578996 Y CN 2578996Y
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- CN
- China
- Prior art keywords
- accumulator
- elastomer
- battery
- positive
- lithium ionic
- Prior art date
- 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.)
- Expired - Lifetime
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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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Abstract
The utility model relates to a lithium ionic accumulator which is characterized in that the middle of a positive-negative electrode group or a space between electrode plates is provided with a porous sheet-shaped or rod-shaped elastomer. The accumulator has the advantages and effects that the situation that a casing body is expanded in a charge and discharge cycle can be avoided and the cyclic life and the safety of an accumulator can be enhanced.
Description
Technical field
The utility model relates to a kind of storage battery, particularly lithium-ions battery, belongs to power technique fields.
Background of invention
Lithium-ions battery is in the charging and discharging process at present, and the lattice structure variation all takes place both positive and negative polarity and the two variable quantity is unequal, during charging, and Li
+Take off embedding from positive pole, enter electrolyte, embed then in the negative pole, during discharge, otherwise.This reaction mechanism requires Li
+Migration path is unsuitable oversize, therefore membrane thicknesses is strict controlled within the certain limit, promptly about 30 μ m, comprise lead-acid battery than traditional secondary battery, ickel-cadmium cell, zinc-silver oxide cell, Ni-H cells etc. are with general thin a lot of more than 150 μ m of barrier film, difference on this thickness causes aspect the deformation of absorption electrode, and the two makes a marked difference.The traditional secondary battery diaphragm can receive electrode perpendicular to the deformational displacement on its surface direction to a certain extent, cushions the stress that results from inside battery.And for lithium ion battery, barrier film is very little as the effect of electrode change in volume cushion space, and the electrode change in volume will be oppressed barrier film, change the electrolyte distribution, cause the electrode bulk expansion, the extruding housing produces non-reversible deformation, it is played pendulum, cause potential safety hazard.
Summary of the invention
The purpose of this utility model is the shortcoming and deficiency in order to overcome above-mentioned prior art just, and designs a kind of internal stress of alleviating, and avoids the lithium-ions battery of cell expansion, improves battery ring life-span and security performance.
The purpose of this utility model realizes by following technical proposal:
Lithium-ions battery, comprise both positive and negative polarity group, electrolyte (4) and shell (5) that positive pole (1), negative pole (2) and barrier film (3) are formed, it is characterized in that between the centre of both positive and negative polarity group or pole plate, being equipped with the elastomer of making of nonmetallic materials (6), elastomer shape is the sheet or the clava of porous, and elastomer is the sheet or the rhabdion of atresia also.
Owing to take technique scheme, make the utility model compared with the prior art have following advantage and effect:
A) adopt nonmetallic materials to make elastomer, can alleviate internal storage battery stress, absorb and discharge because of electrode expands, shrinks the displacement that is produced, and the electrochemical system of battery is not had influence;
B) good cycle, safe and reliable.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Lithium-ions battery, by shown in Figure 1, both positive and negative polarity group, electrolyte (4), shell (5) that it is made up of anodal (1), negative pole (2) and barrier film (3) are formed, the elastomer (6) that nonmetallic materials are made is housed in the centre of both positive and negative polarity group, for example plastics, elastomeric material, elastomer is the sheet or the clava of porous, porous flake can lose weight, clava is fit to cylindrical battery, according to the electrode structure selected shape; Elastomer also can be the sheet or the clava (not shown) of atresia; Elastomer also can be installed between the pole plate, is applicable to the electrode group that the battery utmost point group that is wound into or pole plate are formed by stacking.Because elastomer has elasticity, it can alleviate inside battery stress, absorb and discharge displacement because of electrode expands, contraction is produced, avoid the electrode part to overcharge, cross and put, improve battery cycle life, avoid battery to produce irreversible transformation, safe and reliable, and the chemistry and the chemical property of battery do not had influence.
Elastomer of the present utility model also uses applicable to high capacity cell such as lead acid accumulator, nickel-hydrogen accumulator, nickel cadmium cell, nickel zinc cell, also obtains good effect.
Claims (2)
1. lithium-ions battery, comprise both positive and negative polarity group, electrolyte (4) and shell (5) that positive pole (1), negative pole (2) and barrier film (3) are formed, it is characterized in that the elastomer (6) that nonmetallic materials are made is housed between the centre of both positive and negative polarity group or pole plate, elastomer is the sheet or the clava of porous.
2. storage battery according to claim 1 is characterized in that the elastomer also sheet or the clava of atresia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02285475U CN2578996Y (en) | 2002-11-15 | 2002-11-15 | Lithium ionic accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02285475U CN2578996Y (en) | 2002-11-15 | 2002-11-15 | Lithium ionic accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578996Y true CN2578996Y (en) | 2003-10-08 |
Family
ID=33746478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02285475U Expired - Lifetime CN2578996Y (en) | 2002-11-15 | 2002-11-15 | Lithium ionic accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578996Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006050674A1 (en) * | 2004-11-11 | 2006-05-18 | Byd Company Limited | Winding assembly type lithium ion secondary power batteries |
| WO2007053990A1 (en) * | 2005-11-08 | 2007-05-18 | Byd Company Limited | A lithium ion battery |
| WO2007118358A1 (en) * | 2006-04-17 | 2007-10-25 | Citic Guoan Mengguli New Energy Technology Co., Ltd. | A lithium ion battery |
| CN102170020A (en) * | 2011-04-02 | 2011-08-31 | 国新能源有限公司 | Lithium ion power battery of hollow interlayer |
| CN101212068B (en) * | 2006-12-30 | 2012-07-04 | 深圳市比克电池有限公司 | Li-ion secondary battery and its making method |
| WO2020135809A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module and electric vehicle |
| CN112448104A (en) * | 2020-11-16 | 2021-03-05 | 荣盛盟固利新能源科技有限公司 | Battery cell with elastic porous structure, battery module and battery |
-
2002
- 2002-11-15 CN CN02285475U patent/CN2578996Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006050674A1 (en) * | 2004-11-11 | 2006-05-18 | Byd Company Limited | Winding assembly type lithium ion secondary power batteries |
| WO2007053990A1 (en) * | 2005-11-08 | 2007-05-18 | Byd Company Limited | A lithium ion battery |
| US8088509B2 (en) | 2005-11-08 | 2012-01-03 | Byd Company Limited | Lithium ion battery |
| WO2007118358A1 (en) * | 2006-04-17 | 2007-10-25 | Citic Guoan Mengguli New Energy Technology Co., Ltd. | A lithium ion battery |
| CN101212068B (en) * | 2006-12-30 | 2012-07-04 | 深圳市比克电池有限公司 | Li-ion secondary battery and its making method |
| CN102170020A (en) * | 2011-04-02 | 2011-08-31 | 国新能源有限公司 | Lithium ion power battery of hollow interlayer |
| CN102170020B (en) * | 2011-04-02 | 2014-11-26 | 国新能源有限公司 | Lithium ion power battery of hollow interlayer |
| WO2020135809A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module and electric vehicle |
| US11664555B2 (en) | 2018-12-29 | 2023-05-30 | Contemporary Amperex Technology Co., Limited | Secondary battery, battery module and electric vehicle |
| CN112448104A (en) * | 2020-11-16 | 2021-03-05 | 荣盛盟固利新能源科技有限公司 | Battery cell with elastic porous structure, battery module and battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CITIC GUOAN MENGGULI NEW ENERGY SCIENCE CO., LTD. Free format text: FORMER OWNER: ZHONGXINGUOAN MENGGULI ELECTRIC SOURCE TECHNOLOGY CO., LTD. Effective date: 20061117 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061117 Address after: 102200 Beijing city Changping District Bai Fu Road 18 Patentee after: Zhongxin Guoan Mengguli New Energy Sources Science and Technology Co., Ltd. Address before: 102200 Beijing city Changping District Bai Fu Road 18 Patentee before: Zhongxinguoan Mengguli Power Supply Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121115 Granted publication date: 20031008 |