CN204289550U - A kind of lithium ion battery with explosion-proof line - Google Patents
A kind of lithium ion battery with explosion-proof line Download PDFInfo
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- CN204289550U CN204289550U CN201420864818.3U CN201420864818U CN204289550U CN 204289550 U CN204289550 U CN 204289550U CN 201420864818 U CN201420864818 U CN 201420864818U CN 204289550 U CN204289550 U CN 204289550U
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- explosion
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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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- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to a kind of lithium ion battery with explosion-proof line, comprising: housing, battery core, and the angle place of the wherein one side of housing is provided with explosion-proof line, and each large inside the obverse and reverse housing angle of described housing has at least a place to be provided with arc explosion-proof line.Owing to being all provided with arc explosion-proof line inside the obverse and reverse angle of housing, considerably reduce the fraction defective of explosion-proof line, improve the security performance of finished product battery core, reduce battery explosion to the personal injury of user; Even if the explosion of arc explosion-proof line also only produces the arc shell pieces of a fritter outwardly convex, do not produce corner angle, even if therefore pressure release is split and also can not be hurted sb.'s feelings; Arc explosion-proof line makes cut have the thinnest point due to technological reason, and namely the both sides of camber line are thick, thin gradually to centre, and consistency is better, and the depth being convenient to cut controls, and makes explosion-proof coefficient more accurate; In equal zone aspect, the space that explosion-proof line takies is little, and length is long, and explosion-proof cracking is longer, and disappointing pressure is less.
Description
Technical field:
The utility model relates to a kind of lithium ion battery, particularly relates to a kind of lithium ion battery with explosion-proof line.
Background technology:
The security performance of lithium ion battery is the problem that people are concerned about always, and the event that a lot of lithium ion battery explosion is hurted sb.'s feelings occurs in recent years, unavoidably allows people produce panic to use lithium ion battery function device.Because battery core aluminum hull raw material are in the impact of explosion-proof operation by the spacing tolerance of mould and cutter, explosion-proof line size (width, the degree of depth) progress cut out is poor, therefore explosion-proof precision is affected, so conventional single straight line style explosion-proof line still exists larger potential safety hazard.
Summary of the invention:
The utility model object is exactly for the problems referred to above, provides a kind of lithium ion battery with explosion-proof line.
In order to reach above object, the present invention by the following technical solutions:
With a lithium ion battery for explosion-proof line, comprising: housing, battery core, the angle place of the wherein one side of housing is provided with explosion-proof line, and each large inside the obverse and reverse housing angle of described housing has at least a place to be provided with arc explosion-proof line.
The angle that the string of the two-end-point connection of described arc explosion-proof line and battery levels edge are formed is 25-65 degree.
Described arc explosion-proof line radius is at 3 millimeters to 12 millimeters, explosion-proof line apart from the shortest distance in battery both sides at 2 to 8 millimeters, the residual wall thickness of explosion-proof line is at 0.04 to 0.18 millimeter, and the live width of explosion-proof line is 0.03 to 0.16 millimeter, and the explosion-proof pressure of explosion-proof line is in 0.05 to 0.6 MPa.
Described arc explosion-proof line is cutter line of cut.
The principle of aluminum hull explosion-proof line: when the short circuit of battery core inside and outside or when overcharging, electric current increases, battery core inside raises, pressure in battery core is increased, aluminum hull explosion-proof line place due to other positions of wall ratio little, when in battery core pressure reach the popping pressure of aluminum hull explosion-proof line time, explosion-proof line opening, pressure in release, reduces the power of battery explosion.
The beneficial effects of the utility model: owing to being all provided with arc explosion-proof line inside the obverse and reverse angle of housing, considerably reduce the fraction defective of explosion-proof line, improve the security performance of finished product battery core, reduce battery explosion to the personal injury of user; Even if the explosion of arc explosion-proof line also only produces the arc shell pieces of a fritter outwardly convex, do not produce corner angle, even if therefore pressure release is split and also can not be hurted sb.'s feelings; Arc explosion-proof line makes cut have the thinnest point due to technological reason, and namely the both sides of camber line are thick, thin gradually to centre, and consistency is better, and the depth being convenient to cut controls, and makes explosion-proof coefficient more accurate; In equal zone aspect, the space that explosion-proof line takies is little, and length is long, and explosion-proof cracking is longer, and disappointing pressure is less.
Accompanying drawing illustrates:
Fig. 1 is the explosion-proof line schematic diagram that conventional batteries aluminum hull is arranged.
Fig. 2 is the explosion-proof line schematic diagram that conventional batteries reverse side is arranged.
Fig. 3 is the explosion-proof line schematic diagram that battery front side aluminum hull of the present utility model is arranged.
Fig. 4 is schematic diagram Fig. 3 battery reverse side aluminum hull being arranged explosion-proof line.
Embodiment:
As shown in Figure 1, 2, be the setting of traditional battery anti-explosion line, linear pattern explosion-proof line 11 is located at the upper right corner or the upper left corner of front (A) or reverse side (B).Because battery core aluminum hull raw material are in the impact of explosion-proof operation by the spacing tolerance of mould and cutter, explosion-proof line size (width, the degree of depth) precision cut out is poor, explosion-proof point is caused to be forbidden, so conventional single straight line style explosion-proof line still exists larger potential safety hazard.
By my safety Analysis of department to this kind of single explosion-proof line battery, find that this kind of single explosion-proof line battery explosion-proof line when improper use is easy to lose efficacy, battery explosion rate is high, and security performance is poor.This phenomenon mainly due to battery core aluminum hull raw material in explosion-proof operation because of by the spacing tolerance of mould and cut off the impact of cutter, the explosion-proof line size of cutting out (width, the degree of depth) poor stability causes.And the size of explosion-proof line and cut off position by suppressing test result and directly can reflect finished product battery core (as internal short-circuit, external short circuit, overcharging) battery core releasing pressure automatically function when improper use, thus reduce battery explosion unexpected personal injury is caused to user.Oblique line list explosion-proof line size and the following data display of test result:
As shown in Figure 3 to Figure 4, the utility model comprises: housing 1, battery core, the lower left corner and the another side lower right corner, the upper right corner or the upper left corner of the wherein one side of housing are provided with explosion-proof line, each large inside the front surface A of described housing (1) and reverse side B housing angle have at least a place to be provided with arc explosion-proof line (12), battery container always has two large faces, i.e. obverse and reverses.Inside the front (A) of housing 1 and the battery angle of reverse side (B), two sides is all provided with arc explosion-proof line 12.Arc explosion-proof line 12 and horizontal direction angulation are 25-65 degree.Arc explosion-proof line radius is at 3 millimeters to 12 millimeters, explosion-proof line apart from the shortest distance in battery both sides at 2 to 8 millimeters, the residual wall thickness of explosion-proof line is at 0.04 to 0.18 millimeter, and the live width of explosion-proof line is 0.03 to 0.16 millimeter, and the explosion-proof pressure of explosion-proof line is in 0.05 to 0.6 MPa.Described arc explosion-proof line 12 is cutter line of cut.
All be provided with arc explosion-proof line inside the obverse and reverse angle of housing, greatly reduce the fraction defective of explosion-proof line, improve the security performance of finished product battery core, reduce battery explosion to the personal injury of user; Arc explosion-proof line makes cut have the thinnest point due to technological reason, i.e. behind the both sides of camber line, thin gradually to centre, and consistency is better, and the depth being convenient to cut controls, and it is explosion-proof more accurate to make; In equal zone aspect, the space that explosion-proof line takies is little, and length is long, and explosion-proof cracking is longer, and disappointing pressure is less.
Bottom arc list explosion-proof line size and test result:
As can be seen from the above data, bottom arc explosion-proof line comparatively oblique line list explosion-proof line fraction defective reduces greatly, is reduced to 10% by original 50%.Greatly reduce the fraction defective of explosion-proof line, improve the security performance of battery core, reduce the injury that the bad potential safety hazard of battery core is brought to user.
Claims (4)
1. the lithium ion battery with explosion-proof line, comprise: housing (1), battery core, the angle place of the wherein one side of housing is provided with explosion-proof line, it is characterized in that: each large inside the front (A) of described housing (1) and reverse side (B) housing angle has at least a place to be provided with arc explosion-proof line (12).
2. a kind of lithium ion battery with explosion-proof line according to claim 1, is characterized in that: the angle that the string of the two-end-point connection of described arc explosion-proof line (12) and battery levels edge are formed is 25-65 degree.
3. a kind of lithium ion battery with explosion-proof line according to claim 2, it is characterized in that: described arc explosion-proof line radius is at 3 millimeters to 12 millimeters, explosion-proof line apart from the shortest distance in battery both sides at 2 to 8 millimeters, the residual wall thickness of explosion-proof line is at 0.04 to 0.18 millimeter, the live width of explosion-proof line is 0.03 to 0.16 millimeter, and the explosion-proof pressure of explosion-proof line is in 0.05 to 0.6 MPa.
4. a kind of lithium ion battery with explosion-proof line according to claim 3, is characterized in that: described arc explosion-proof line (12) is cutter line of cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864818.3U CN204289550U (en) | 2014-12-31 | 2014-12-31 | A kind of lithium ion battery with explosion-proof line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864818.3U CN204289550U (en) | 2014-12-31 | 2014-12-31 | A kind of lithium ion battery with explosion-proof line |
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| Publication Number | Publication Date |
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| CN204289550U true CN204289550U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420864818.3U Active CN204289550U (en) | 2014-12-31 | 2014-12-31 | A kind of lithium ion battery with explosion-proof line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374060A (en) * | 2016-10-12 | 2017-02-01 | 中山市小榄镇大久金属制品厂 | Square shell of lithium battery or power lithium battery |
| WO2023050098A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Pressure relief apparatus, battery cell, battery and electrical device |
-
2014
- 2014-12-31 CN CN201420864818.3U patent/CN204289550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374060A (en) * | 2016-10-12 | 2017-02-01 | 中山市小榄镇大久金属制品厂 | Square shell of lithium battery or power lithium battery |
| WO2023050098A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Pressure relief apparatus, battery cell, battery and electrical device |
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