CN202308192U - Secure lithium ion battery - Google Patents
Secure lithium ion battery Download PDFInfo
- Publication number
- CN202308192U CN202308192U CN201120398287XU CN201120398287U CN202308192U CN 202308192 U CN202308192 U CN 202308192U CN 201120398287X U CN201120398287X U CN 201120398287XU CN 201120398287 U CN201120398287 U CN 201120398287U CN 202308192 U CN202308192 U CN 202308192U
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- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- anode
- dressing
- battery
- 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.)
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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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Abstract
The utility model discloses a secure lithium ion battery, which comprises a cathode piece, an anode piece, a cathode laying material and an anode laying material, wherein gummed paper is attached to the head coating start position and the tail coating stop position of the cathode piece; the head coating start position and the tail coating stop position of the anode piece are correspondingly positioned in the gummed paper regions of the cathode piece; and the size of the cathode laying material is larger than that of the anode laying material. The security of the lithium ion battery can be improved, and other types of performance of the battery are not influenced.
Description
Technical field
The utility model relates to a kind of safe lithium ion battery, refers specifically to a kind of safe lithium ion battery pole piece and volume cored structure thereof.
Background technology
In the terminal client hand, use the electronic product of lithium ion battery may run into the fortuitous event that is penetrated by sharp-pointed material, so the important indicator that lancing test is a lithium ion battery security can be detected.The characteristic of lithium ion battery itself causes the defective puzzlement battery industry disadvantage for many years that becomes of acupuncture.Improve the underproof mode of battery acupuncture at present and have following two kinds: the first, adopt comparatively safe positive and negative pole material; The second, in electrolyte, add certain quantity of additive.More than two kinds of fail safes that method can improve battery to a certain extent, but brought many drawbacks simultaneously, such as problems such as the volume of battery specific energy is not enough, capacity is not played well, internal resistance height, Cycle Difference.
The safety issue of lithium ion battery when acupuncture is the problem of heat, and heat production speed of battery (capacity and exothermic reaction) and rate of heat dispation (size of battery, shape and material) are the key issues that influences battery security.In fact, the acupuncture behavior of battery is appreciated that the internal short-circuit of battery that causes for nail in acupuncture course, according to Ohm's law I=U/R and Joule law Q=I
2Rt, local temperature acutely rises to the reaction temperature above active material, and the reaction of active material discharges great amount of heat energy equally, and such chain reaction constantly goes on, and finally causes the burning of entire cell.Can cause after the battery acupuncture that internal short-circuit is divided into following four kinds of situation: a, anodal aluminium foil and negative copper foil short circuit; B, anodal aluminium foil and negative pole dressing short circuit; C, anode dressing and negative copper foil short circuit; D, anode dressing and negative pole dressing short circuit.Through experimental verification, under full power state,, anodal aluminium foil will inevitably cause the battery burning as long as contacting with negative pole dressing.
The utility model content
The purpose of the utility model is that a kind of safe lithium ion battery is provided on the basis that does not influence other performance of battery, and it can improve the security performance of lithium ion battery and not influence other performance of battery.
In order to achieve the above object, the utility model is realized by following technical scheme.
A kind of safe lithium ion battery; Comprise positive plate, negative plate, anode dressing and negative pole dressing; It is characterized in that: the positive plate head rises and is coated with position and afterbody and only is coated with the position and posts gummed paper; The negative plate head rises and is coated with position and afterbody and only is coated with the gummed paper zone that the position correspondence drops on positive plate, and the size of anode dressing exceeds the size of negative pole dressing.
The utility model beneficial effect is; Negative pole ending position is dropped on the burr that anodal gummed paper zone can prevent effectively that the negative plate afterbody from possibly exist and is punctured the positive and negative electrode contact short circuit phenomenon that diaphragm paper causes; The size of anode dressing exceeds the size of negative pole dressing; Negative pole dressing contacts the thermal runaway phenomenon that causes with anodal aluminium foil when having avoided acupuncture, and the utility model is mainly from preventing that anodal aluminium foil from contacting the fail safe that improves battery with negative pole dressing.
Description of drawings
Fig. 1 is the positive plate structure front schematic view of the utility model
Fig. 2 is the positive plate structure schematic rear view of the utility model
Fig. 3 is the negative plate structure front schematic view of the utility model
Fig. 4 is the negative plate structure schematic rear view of the utility model
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done to describe in further detail.
Like Fig. 1, Fig. 2, Fig. 3, a kind of safe lithium ion battery shown in Figure 4; Comprise positive plate 1, negative plate 2, anode dressing 11 and negative pole dressing 21; The utility model positive plate 1 head rises and is coated with the position and posts gummed paper 12; The utility model positive plate 1 afterbody only is coated with the position and posts gummed paper 13, and negative plate 2 heads rise and are coated with position and afterbody and only are coated with the gummed paper zone that the position correspondence drops on positive plate 1, and the size of anode dressing 11 exceeds the size of negative pole dressing 21.The volume core that the positive plate 1 of the utility model, negative plate 2 are wound into, in acupuncture course, contacting of anodal empty paper tinsel and negative pole dressing can not caused in any position of acupuncture electricity core, thereby effectively avoids the thermal runaway phenomenon in the acupuncture course.Positive plate 1 among the figure, negative plate 2 heads rise and are coated with the position near lug, and the positive plate 1 among the figure, negative plate 2 afterbodys only are coated with the position near collector.
Claims (1)
1. safe lithium ion battery; Comprise positive plate, negative plate, anode dressing and negative pole dressing; It is characterized in that: the positive plate head rises and is coated with position and afterbody and only is coated with the position and posts gummed paper; The negative plate head rises and is coated with position and afterbody and only is coated with the gummed paper zone that the position correspondence drops on positive plate, and the size of anode dressing exceeds the size of negative pole dressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120398287XU CN202308192U (en) | 2011-10-17 | 2011-10-17 | Secure lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120398287XU CN202308192U (en) | 2011-10-17 | 2011-10-17 | Secure lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202308192U true CN202308192U (en) | 2012-07-04 |
Family
ID=46377020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120398287XU Expired - Fee Related CN202308192U (en) | 2011-10-17 | 2011-10-17 | Secure lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202308192U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682250A (en) * | 2013-11-25 | 2014-03-26 | 广东凯德能源科技有限公司 | Lithium ion battery pole piece structure resisting to high-strength vibration and soldering method for lithium ion battery pole piece structure |
| CN103746151A (en) * | 2013-12-07 | 2014-04-23 | 新余英泰能科技有限公司 | Method capable of enabling electronic cigarette battery to pass needling detection |
| CN113725496A (en) * | 2021-09-01 | 2021-11-30 | 骆驼集团新能源电池有限公司 | Ternary system start-stop lithium ion battery and preparation method thereof |
-
2011
- 2011-10-17 CN CN201120398287XU patent/CN202308192U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682250A (en) * | 2013-11-25 | 2014-03-26 | 广东凯德能源科技有限公司 | Lithium ion battery pole piece structure resisting to high-strength vibration and soldering method for lithium ion battery pole piece structure |
| CN103682250B (en) * | 2013-11-25 | 2015-11-18 | 广东凯德能源科技有限公司 | A kind of electrodes of lithium-ion batteries structure of anti-high-strength vibration and welding method thereof |
| CN103746151A (en) * | 2013-12-07 | 2014-04-23 | 新余英泰能科技有限公司 | Method capable of enabling electronic cigarette battery to pass needling detection |
| CN113725496A (en) * | 2021-09-01 | 2021-11-30 | 骆驼集团新能源电池有限公司 | Ternary system start-stop lithium ion battery and preparation method thereof |
| CN113725496B (en) * | 2021-09-01 | 2024-04-19 | 骆驼集团新能源电池有限公司 | Ternary system start-stop lithium ion battery and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jingxian Inventor before: Li Yinfeng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI YINFENG TO: ZHANG JINGXIAN |
|
| DD01 | Delivery of document by public notice |
Addressee: Yang Shunxin Document name: Notification of Passing Examination on Formalities |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20181017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |