CN202817080U - Lithium ion battery and anti-acupuncture structural cell thereof - Google Patents
Lithium ion battery and anti-acupuncture structural cell thereof Download PDFInfo
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- CN202817080U CN202817080U CN2012202280643U CN201220228064U CN202817080U CN 202817080 U CN202817080 U CN 202817080U CN 2012202280643 U CN2012202280643 U CN 2012202280643U CN 201220228064 U CN201220228064 U CN 201220228064U CN 202817080 U CN202817080 U CN 202817080U
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- positive
- lithium ion
- battery
- ion battery
- negative pole
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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)
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Abstract
The utility model discloses an anti-acupuncture structural cell of a lithium ion battery. The anti-acupuncture structural cell comprises a positive pole tab, a negative pole tab, a positive pole piece and a negative pole piece, wherein coatings are respectively attached to the surfaces of the positive and negative pole pieces, the positive pole tab is attached to the edge end of the positive pole piece, the negative pole tab is attached to the edge end of the negative pole piece, the positive and negative pole pieces are wound in an overlapping manner, the tail ends of the positive and negative pole pieces are respectively and additionally provided with a whole circle of protective sheets, and a diaphragm which is located between the protective sheets of the positive and negative pole pieces is correspondingly and additionally arranged so as to separate the protective sheets. The utility model further discloses a lithium ion battery containing the anti-acupuncture structural cell. The anti-acupuncture structural cell and the lithium ion battery have the beneficial effects that the safety performance of the battery in puncture abuse can be remarkably improved through only the optimization and modification of the pole pieces, and the situation that the battery can not be subjected to firing, explosion and short circuit in the case that the battery is subjected to deformation due to accidental collision or extrusion or puncture abuse is ensured.
Description
Technical field
The utility model relates to the lithium ion battery field, is specifically related to the anti-needling structure battery core of a kind of lithium ion battery and lithium ion battery thereof.
Background technology
Along with the pay attention to day by day of country to New Energy Industry, ev industry, is constantly increased the performance requirement of lithium ion battery by people's extensive concern simultaneously as new industry.Lithium ion battery refers to embed compound as the general name of positive electrode battery take lithium ion, it is large that it has energy density, average output voltage is high, self discharge is little, there is not memory effect, but the characteristics of the superior fast charging and discharging of cycle performance, and lithium ion battery has been widely used in the fields such as mobile phone, notebook computer, yet, even lithium ion battery has relatively high fail safe, but when battery because of accident collision or extruding deformation occured, the inside battery both positive and negative polarity also easily was short-circuited, thereby initiation potential.
But in recent years lithium ion battery be under abuse conditions (put as heating, overcharge, crossing, short circuit, vibration, extruding etc.) can occur catching fire, the events such as blast and even injury to personnel.So the fail safe of lithium ion battery causes people's extensive concern.
The utility model content
The purpose of this utility model is: in order to solve the shortcoming of above-mentioned prior art, provide a kind of guarantee battery because of accident collision deformation occurs in extruding or the situation of the abuse that is subject to puncturing under the anti-needling structure battery core of lithium ion battery and the lithium ion battery thereof of on fire, blast and short circuit do not appear.
For achieving the above object, the utility model adopts following technical scheme:
The anti-needling structure battery core of a kind of lithium ion battery battery core comprises positive and negative lug, positive and negative plate, and the positive and negative plate surface is respectively with coating, and the positive plate marginal end is with anode ear; The negative plate marginal end is with negative electrode lug; The overlapping coiling of positive and negative plate, positive and negative plate end increase respectively by a whole circle screening glass, and increase accordingly barrier film and between the screening glass of positive/negative plate both are separated.Prior art makes battery heat in the situation of puncture abuse concentrate on inside battery easily, causes heat to be difficult for distributing the initiation battery temperature and raises too fast.Reason is not have outer field small resistor conductor that electric charge is consumed fast and the heat Quick diffusing is gone out, and finally causes battery-heating amount ambassador battery to be in unsafe condition.The utility model by at lithium ion battery coil core outer setting Copper Foil and aluminium foil as short dot, guide most of electric current into volume core outside (because resistance is less herein, be the principle of short circuit) consume, and because the less caloric value of resistance of Copper Foil and aluminium foil can't be very high, and Copper Foil and aluminium foil have the good capacity of heat transmission heat Quick diffusing that produces can be gone out, make heat can not be collected at inside battery, finally reach guarantee battery in the situation of puncture abuse for safe condition.Wherein, positive plate is aluminium foil, and negative plate is Copper Foil.The screening glass of positive plate is aluminium foil, and the screening glass of negative plate is Copper Foil.
Positive and negative lug is arranged on the internal layer of battery core.
A kind of lithium ion battery comprises the anti-needling structure battery core of lithium ion battery, electrolyte and encapsulating film, and battery core and electrolyte are sealed in the encapsulating film.No matter extraneous acupuncture can guarantee that from which direction the short circuit that arranges lights the good capacity of heat transmission, and the heat Quick diffusing that produces can be gone out, make heat can not be collected at inside battery, finally guarantee battery safety.
The beneficial effects of the utility model are: relative prior art, under the prerequisite of the winding method that does not change battery, only the Optimizing Reconstruction by pole piece can improve the security performance of battery under the puncture abuse significantly, guarantee battery because of accident collision deformation occurs in extruding or the situation of the abuse that is subject to puncturing under the situation of on fire, blast and short circuit does not appear, strengthen its fail safe.
Description of drawings
Fig. 1 is the anti-needling structure battery core of lithium ion battery of the present utility model schematic diagram.
Fig. 2 is lithium ion battery schematic diagram of the present utility model.
Embodiment
Shown in Fig. 1,2, the anti-needling structure battery core of a kind of lithium ion battery battery core comprises positive and negative lug 1 and 2, positive and negative plate 3 and 4, and positive and negative plate 3 and 4 surfaces are respectively with coating 5, and positive plate 3 marginal ends are with anode ear; Negative plate 4 marginal ends are with negative electrode lug 2; Positive and negative plate 3 and 4 overlapping coilings, positive and negative plate 3 and 4 ends increase respectively by a whole circle screening glass 6, and increase accordingly barrier film and between the screening glass 6 of positive/negative plate 3 and 4 both are separated.Prior art makes battery heat in the situation of puncture abuse concentrate on inside battery easily, causes heat to be difficult for distributing the initiation battery temperature and raises too fast.Reason is not have outer field small resistor conductor that electric charge is consumed fast and the heat Quick diffusing is gone out, and finally causes battery-heating amount ambassador battery to be in unsafe condition.The utility model by at lithium ion battery coil core outer setting Copper Foil and aluminium foil as short dot, guide most of electric current into volume core outside (because resistance is less herein, be the principle of short circuit) consume, and because the less caloric value of resistance of Copper Foil and aluminium foil can't be very high, and Copper Foil and aluminium foil have the good capacity of heat transmission heat Quick diffusing that produces can be gone out, make heat can not be collected at inside battery, finally reach guarantee battery in the situation of puncture abuse for safe condition.Wherein, positive plate 3 is aluminium foils, and negative plate 4 is Copper Foils.The screening glass 6 of positive plate 3 is aluminium foils, and the screening glass 6 of negative plate 4 is Copper Foils.
Positive and negative lug 1 and 2 is arranged on the internal layer of battery core.
A kind of lithium ion battery comprises the anti-needling structure battery core 8 of lithium ion battery, electrolyte and encapsulating film 9, and battery core 8 and electrolyte are sealed in the encapsulating film 9.No matter extraneous acupuncture can guarantee that from which direction the short circuit that arranges lights the good capacity of heat transmission, and the heat Quick diffusing that produces can be gone out, make heat can not be collected at inside battery, finally guarantee battery safety.
Foregoing is preferred embodiment of the present utility model only, is not be used to limiting embodiment of the present utility model, and those skilled in the art are according to design of the present utility model, and the appropriate adaptation of having done or modification all should be within protection ranges of the present utility model.
Claims (3)
1. the anti-needling structure battery core of lithium ion battery comprises positive and negative lug, positive and negative plate, and described positive and negative plate surface is respectively with coating, and described positive plate marginal end is with anode ear; Described negative plate marginal end is with negative electrode lug; The overlapping coiling of positive and negative plate is characterized in that: described positive and negative plate end increases respectively by a whole circle screening glass, and increases accordingly barrier film and between the screening glass of positive/negative plate both are separated.
2. the anti-needling structure battery core of lithium ion battery according to claim 1, it is characterized in that: described positive and negative lug is arranged on the internal layer of battery core.
3. lithium ion battery is characterized in that: comprise the anti-needling structure battery core of the described lithium ion battery of claim 1-2, and electrolyte and encapsulating film, battery core and electrolyte are sealed in the encapsulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202280643U CN202817080U (en) | 2012-05-21 | 2012-05-21 | Lithium ion battery and anti-acupuncture structural cell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202280643U CN202817080U (en) | 2012-05-21 | 2012-05-21 | Lithium ion battery and anti-acupuncture structural cell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817080U true CN202817080U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202280643U Expired - Fee Related CN202817080U (en) | 2012-05-21 | 2012-05-21 | Lithium ion battery and anti-acupuncture structural cell thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN202817080U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108232096A (en) * | 2018-01-02 | 2018-06-29 | 惠州亿纬锂能股份有限公司 | A kind of battery cathode ear and battery |
| CN108987794A (en) * | 2018-07-17 | 2018-12-11 | 惠州市豪鹏科技有限公司 | A kind of Soft Roll formula lithium ion battery and drift bolt test method |
| CN113437408A (en) * | 2021-05-07 | 2021-09-24 | 东莞市振华新能源科技有限公司 | Manufacturing method of anti-needling lithium battery |
-
2012
- 2012-05-21 CN CN2012202280643U patent/CN202817080U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108232096A (en) * | 2018-01-02 | 2018-06-29 | 惠州亿纬锂能股份有限公司 | A kind of battery cathode ear and battery |
| CN108987794A (en) * | 2018-07-17 | 2018-12-11 | 惠州市豪鹏科技有限公司 | A kind of Soft Roll formula lithium ion battery and drift bolt test method |
| CN113437408A (en) * | 2021-05-07 | 2021-09-24 | 东莞市振华新能源科技有限公司 | Manufacturing method of anti-needling lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20130521 |