CN201985201U - Lithium ion power battery pole piece with high safety - Google Patents
Lithium ion power battery pole piece with high safety Download PDFInfo
- Publication number
- CN201985201U CN201985201U CN2011200165557U CN201120016555U CN201985201U CN 201985201 U CN201985201 U CN 201985201U CN 2011200165557 U CN2011200165557 U CN 2011200165557U CN 201120016555 U CN201120016555 U CN 201120016555U CN 201985201 U CN201985201 U CN 201985201U
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- Prior art keywords
- pole piece
- lithium ion
- ion power
- power battery
- positive plate
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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.)
- 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
- 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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- Battery Electrode And Active Subsutance (AREA)
Abstract
A Lithium ion power battery pole piece with high safety relates to a Lithium ion power battery pole piece, aiming to solve the problem that in case of internal short circuit of the conventional Lithium ion power battery pole piece, a lithium iron phosphate system explodes and burns. The Lithium ion power battery pole piece adopts the structure that N+1 negative pole pieces (2) and N positive pole pieces (1) are stacked at intervals, and are isolated by diaphragms (3); four corners of each positive pole piece (1) and each negative pole piece (2) are rounded corners and the radius (R) of the rounded corners is 1mm to 20mm; the length (D) of the burrs of each positive pole piece (1) and each negative pole piece (2) is 0.007mm to 0.016mm; the coating thickness (A) of each positive pole piece (1) is 0.02mm to 0.05mm while the coating thickness (B) of each negative pole piece (2) is 0.02mm to 0.05mm; the thickness (C) of each diaphragm (3) is 0.05mm to 0.07mm; and N is a natural number from 4 to 160. The Lithium ion power battery pole piece is applicable to Lithium ion power batteries.
Description
Technical field
The utility model relates to a kind of lithium ion power cell pole flakes, is specifically related to a kind of safe lithium ion power cell pole flakes.
Background technology
In recent years, because problems such as environmental pollution, lack of energy is serious day by day, lithium-ion-power cell receives increasing the concern and research as a kind of new forms of energy of alternative oil.Along with the application of lithium-ion-power cell in fields such as hybrid vehicle, pure electric automobile, back-up sources, it is particularly important that the safety issue of battery just seems.The LiFePO4 system is highly stable under normal state, and fail safe is very high, if but internal short-circuit takes place in lithium ion power cell pole flakes, and the LiFePO4 system can cause blast and on fire.
The utility model content
If the purpose of this utility model is in order to solve existing lithium ion power cell pole flakes internal short-circuit to take place, the LiFePO4 system can cause blast and problem on fire, and then a kind of safe lithium ion power cell pole flakes is provided.
The technical solution of the utility model is: a kind of safe lithium ion power cell pole flakes comprises N positive plate, N+1 negative plate and a plurality of barrier film, N+1 negative plate and N positive plate stack at interval, isolate by a barrier film between N+1 negative plate and N positive plate, four angles of each positive plate and each negative plate are fillet, described radius of corner R is 1mm-20mm, the length D of the burr of each positive plate and each negative plate is 0.007mm-0.016mm, the coating layer thickness A of each positive plate is 0.02mm-0.05mm, the coating layer thickness B of each negative plate is 0.02mm-0.05mm, the thickness C of barrier film is 0.05mm-0.07mm, and the value of N is the natural number of 4-160.
The utility model compared with prior art has following effect: the utility model with the shape at four angles of lithium ion power cell pole flakes by traditional right angle, change fillet into, avoided sharp-pointed right angle to pierce through barrier film, simultaneously, burr length in the control film-making process, and, more effectively avoided burr to pass barrier film and caused internal short-circuit of battery, thereby improved the security performance of battery by increasing the thickness of pole piece, barrier film.
Description of drawings
Fig. 1 is the syndeton schematic diagram of positive plate of the present utility model, negative plate and barrier film; Fig. 2 is the I place enlarged drawing of Fig. 1; Fig. 3 is the structural representation of positive plate; Fig. 4 is the structural representation of negative plate.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1-Fig. 4, a kind of safe lithium ion power cell pole flakes of present embodiment comprises N positive plate 1, N+1 negative plate 2 and a plurality of barrier film 3, N+1 negative plate 2 stacks at interval with N positive plate 1, isolate by a barrier film 3 between N+1 negative plate 2 and N positive plate 1, four angles of each positive plate 1 and each negative plate 2 are fillet, described radius of corner R is 1mm-20mm, the length D of the burr of each positive plate 1 and each negative plate 2 is 0.007mm-0.016mm, the coating layer thickness A of each positive plate 1 is 0.02mm-0.05mm, the coating layer thickness B of each negative plate 2 is 0.02mm-0.05mm, the thickness C of barrier film 3 is 0.05mm-0.07mm, and the value of N is the natural number of 4-160.
Embodiment two: in conjunction with Fig. 2 and Fig. 3 present embodiment is described, the pass between the burr length D of the coating layer thickness A of each positive plate 1 of present embodiment, the thickness C of barrier film 3 and each positive plate 1 is (A/2+C)/2＞D.So be provided with, prevented that effectively burr from passing barrier film, cause the short circuit of positive plate, improved the security performance of lithium-ion-power cell.Other composition is identical with embodiment one with annexation.
Embodiment three: in conjunction with Fig. 2 and Fig. 4 present embodiment is described, the pass between the burr length D of the coating layer thickness B of each negative plate 2 of present embodiment, the thickness C of barrier film 3 and each negative plate 2 is (B/2+C)/2＞D.So be provided with, prevented that effectively burr from passing barrier film, cause the short circuit of negative plate, improved the security performance of lithium-ion-power cell.Other composition is identical with embodiment one or two with annexation.
Claims (3)
1. safe lithium ion power cell pole flakes, it comprises N positive plate (1), N+1 negative plate (2) and a plurality of barrier film (3), N+1 negative plate (2) stacks at interval with N positive plate (1), isolate by a barrier film (3) between N+1 negative plate (2) and N the positive plate (1), four angles of each positive plate (1) and each negative plate (2) are fillet, described radius of corner (R) is 1mm-20mm, the length (D) of the burr of each positive plate (1) and each negative plate (2) is 0.007mm-0.016mm, the coating layer thickness (A) of each positive plate (1) is 0.02mm-0.05mm, the coating layer thickness (B) of each negative plate (2) is 0.02mm-0.05mm, the thickness (C) of barrier film (3) is 0.05mm-0.07mm, and the value of N is the natural number of 4-160.
2. a kind of safe lithium ion power cell pole flakes according to claim 1 is characterized in that: the pass between the burr length (D) of the coating layer thickness (A) of each positive plate (1), the thickness (C) of barrier film (3) and each positive plate (1) is (A/2+C)/2＞D.
3. a kind of safe lithium ion power cell pole flakes according to claim 1 and 2 is characterized in that: the pass between the burr length (D) of the coating layer thickness (B) of each negative plate (2), the thickness (C) of barrier film (3) and each negative plate (2) is (B/2+C)/2＞D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200165557U CN201985201U (en) | 2011-01-19 | 2011-01-19 | Lithium ion power battery pole piece with high safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200165557U CN201985201U (en) | 2011-01-19 | 2011-01-19 | Lithium ion power battery pole piece with high safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201985201U true CN201985201U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200165557U Expired - Lifetime CN201985201U (en) | 2011-01-19 | 2011-01-19 | Lithium ion power battery pole piece with high safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201985201U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509641A (en) * | 2011-09-28 | 2012-06-20 | 江苏富朗特新能源有限公司 | Pole piece of super capacitor or lithium battery cell |
| CN103427108A (en) * | 2012-05-22 | 2013-12-04 | 联想(北京)有限公司 | Lithium ion secondary battery and method for preparing lithium ion secondary battery |
| CN107527807A (en) * | 2017-08-30 | 2017-12-29 | 米亚索乐装备集成（福建）有限公司 | The cutting method of solar cell |
| CN111312993A (en) * | 2020-03-03 | 2020-06-19 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| WO2021174410A1 (en) * | 2020-03-03 | 2021-09-10 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| WO2021195909A1 (en) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | Battery core and electrochemical device applying same |
| WO2021238629A1 (en) * | 2020-05-28 | 2021-12-02 | 江苏卓高新材料科技有限公司 | Current collector, preparation method for current collector, electrode plate, and lithium-ion battery |
| WO2024152189A1 (en) * | 2023-01-17 | 2024-07-25 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery cell, battery, and electrical device |
-
2011
- 2011-01-19 CN CN2011200165557U patent/CN201985201U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509641A (en) * | 2011-09-28 | 2012-06-20 | 江苏富朗特新能源有限公司 | Pole piece of super capacitor or lithium battery cell |
| CN103427108A (en) * | 2012-05-22 | 2013-12-04 | 联想(北京)有限公司 | Lithium ion secondary battery and method for preparing lithium ion secondary battery |
| CN103427108B (en) * | 2012-05-22 | 2016-08-17 | 联想(北京)有限公司 | A kind of lithium rechargeable battery and the method making lithium rechargeable battery |
| CN107527807A (en) * | 2017-08-30 | 2017-12-29 | 米亚索乐装备集成（福建）有限公司 | The cutting method of solar cell |
| CN111312993A (en) * | 2020-03-03 | 2020-06-19 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| WO2021174410A1 (en) * | 2020-03-03 | 2021-09-10 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN111312993B (en) * | 2020-03-03 | 2021-11-23 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| WO2021195909A1 (en) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | Battery core and electrochemical device applying same |
| CN114041224A (en) * | 2020-03-31 | 2022-02-11 | 宁德新能源科技有限公司 | Battery cell and electrochemical device using same |
| CN114041224B (en) * | 2020-03-31 | 2024-09-03 | 宁德新能源科技有限公司 | Battery cell and electrochemical device using same |
| WO2021238629A1 (en) * | 2020-05-28 | 2021-12-02 | 江苏卓高新材料科技有限公司 | Current collector, preparation method for current collector, electrode plate, and lithium-ion battery |
| WO2024152189A1 (en) * | 2023-01-17 | 2024-07-25 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery cell, battery, and electrical device |
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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: 20110921 |