CN203787475U - Battery shell with explosion-proof function and battery with shell - Google Patents
Battery shell with explosion-proof function and battery with shell Download PDFInfo
- Publication number
- CN203787475U CN203787475U CN201420064317.7U CN201420064317U CN203787475U CN 203787475 U CN203787475 U CN 203787475U CN 201420064317 U CN201420064317 U CN 201420064317U CN 203787475 U CN203787475 U CN 203787475U
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- China
- Prior art keywords
- battery case
- word pattern
- case body
- pattern cutting
- cutting trace
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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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- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery shell with an explosion-proof function and a battery with the shell. The battery shell comprises a battery shell body, wherein a large plane of the battery shell body is provided with at least one inclined linear cutting mark. The inclined linear cutting mark is arranged in any right-angle area adjacent to the battery shell body, when the temperature in the shell is increased and a great amount of gas is produced in the shell due to short circuit inside or outside the battery, the residual thickness d of the position, corresponding to that of the linear cutting mark, of the battery shell is about 0.09mm to 0.15mm, the pressure resistance on the position is smaller than that of other positions on the battery shell body, the air pressure inside the battery shell body is discharged from the linear cutting mark, and the battery expansion area can be increasingly protected by the distance from a first interval a and a second interval b to the right-angle edge of the battery shell body, so that the deformation of corners of the battery shell can be effectively prevented, and the explosion risk of the battery caused by the heat expansion can be greatly reduced.
Description
Technical field
The utility model relates to battery and makes field, particularly a kind of battery that has the battery case of explosion prevention function and have this shell.
Background technology
Because lithium ion battery in use has certain probability generation internal short-circuit or external short circuit, cause temperature in housing raise and produce a large amount of gas, very easily make cell expansion blast, to depended on product even personal safety form potential threat, therefore require housing or cover plate partly to there is explosion-proof valve function.And on aluminum hull housing, carve one explosion-proof valve, and can reduce the intensity of aluminum hull part, press the excessive blast that causes in when preventing battery core internal short-circuit.
At present, housing explosion-proof valve technology is generally with cutter, to stamp out one straight line or curve on housing, existing two kinds of housing explosion-proof valve technical patents, " a kind of explosion-proof valve ", the patent No. is 200420085791.1, in this patent, mention two connected explosion-proof valves of Y type lower margin, pressure release pressure is larger, more than 0.8MPa; Another kind of cry " a kind of anti-explosion safety cell ", the patent No. is: 200420095560.1, and the L-type explosion-proof valve of mentioning in this patent, far away apart from the diagonal place (dilatancy maximum position) of position, housing angle, the pressure triggering is larger, the also more difficult effect of playing prevent exploding.
Utility model content
The purpose of this utility model is the above-mentioned defect for prior art, and the battery case with explosion prevention function that a kind of simple in structure, punching press is convenient, pressure release pressure is little is provided.
For solving the above-mentioned defect of prior art, technical scheme to be solved in the utility model is: a kind of battery case with explosion prevention function is provided, comprise a battery case body, at least one large plane of battery case body is provided with the yi word pattern cutting trace of at least one inclination.
In the above-mentioned battery case with explosion prevention function, battery case body is the rectangle structure with four right-angle sides, the yi word pattern cutting trace that is respectively equipped with one, two, three or four inclination in one or two large plane of described battery case body, described yi word pattern cutting trace is arranged at the corner of any one right-angle side of the large plane of described battery case body.
In the above-mentioned battery case with explosion prevention function, described battery case body is the rectangle structure with four right-angle sides, in two large planes of described battery case body, be respectively provided with the yi word pattern cutting trace of an inclination, the battery case with explosion prevention function according to claim 1, it is characterized in that, described battery case body is the rectangle structure with four right-angle sides, in two large planes of described battery case body, be respectively provided with the yi word pattern cutting trace of an inclination, described yi word pattern cutting trace arranges in the following way: the main cutting of the yi word pattern depending on large plane trace is arranged on the upper left corner of this large plane or the corner in the upper right corner, the yi word pattern of the large plane of backsight cutting trace is arranged on the large plane of backsight and the main corner of looking the relative angle of large plane.
In the above-mentioned battery case with explosion prevention function, between yi word pattern cutting trace and the parallel edges of described battery case body, there is an angle theta, the angle of described angle theta is selected in following scope: 1 °～44 °.
In the above-mentioned battery case with explosion prevention function, yi word pattern cutting one end of trace and a right-angle side at described battery case body right angle have the first spacing a, and the described yi word pattern cutting other end of trace and another right-angle side at described battery case body right angle have the second spacing b; The length of described yi word pattern cutting trace is selected in following scope: 3mm～20mm.
In the above-mentioned battery case with explosion prevention function, the distance of the first spacing a is selected in following scope: 1 mm～5mm, the distance of described the second spacing b is selected in following scope: 1 mm～5mm.
In the above-mentioned battery case with explosion prevention function, the residual thickness d of the corresponding described yi word pattern cutting of described battery case body trace position selects in following scope: 0.09 mm～0.15mm.
In the above-mentioned battery case with explosion prevention function, the described battery case body structure that is rectangle, the limit, the left and right sides of rectangle structure body is arc-shaped transitional surface, the yi word pattern cutting trace that is respectively equipped with one, two, three or four inclination in one or two large plane of described battery case body, described yi word pattern cutting trace is arranged at the corner at top edge or lower limb and the described arc transition edge of the large plane of described battery case body; One end and the described battery case body arc transition edge of described yi word pattern cutting trace have the second spacing b; Between the described yi word pattern cutting other end of trace and the top edge of described battery case body or lower limb, there is the first spacing a, the distance of described the first spacing a is selected in following scope: 1 mm～5mm, and the distance of described the second spacing b is selected in following scope: 1 mm～5mm; The length of described yi word pattern cutting trace is selected in following scope: 3mm～20mm; The residual thickness d of described yi word pattern cutting trace position selects in following scope: 0.09 mm～0.15mm.
A kind of above-mentioned battery with explosion prevention function shell that adopts is provided, described in there is explosion prevention function shell be aluminum enclosure, battery unit is housed in it, case top is fixed with the conductive metal sheet being connected with described battery unit.
Compared with prior art, the utility model has the advantages that: the utility model adopts the yi word pattern cutting trace tilting to be arranged near in any one right angle area of battery case body, when internal short-circuit of battery or external short circuit, while causing the interior temperature of housing raise and produce a large amount of gas, the residual thickness d that cuts trace position by the corresponding yi word pattern of battery case body is in 0.09 mm～0.15mm, be less than the anti-pressure ability of other positions of battery case body, the air pressure of battery case body interior just can cut trace place by yi word pattern and discharge, the distance of the first spacing a and the second spacing b and battery case body right-angle side can strengthen protection cell expansion region, effectively prevent the distortion of battery case bight, greatly reduce the danger that battery expanded by heating is blasted.
Another object of the present utility model is to provide a kind of battery with explosion prevention function, and described battery case is aluminum enclosure, and battery unit is housed in it, and case top is fixed with the conductive metal sheet being connected with described battery unit.
The utility model has the advantages that: the utility model adopts the battery case with explosion prevention function, when internal short-circuit of battery or external short circuit, while causing the interior temperature of housing raise and produce a large amount of gas, the residual thickness d that cuts trace position by the corresponding yi word pattern of battery case is in 0.09 mm～0.15mm, be less than the anti-pressure ability of other positions of battery case, the air pressure of battery case inside just can cut trace place by yi word pattern and discharge, and greatly reduces the danger that battery expanded by heating is blasted.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment mono-structural representation.
Fig. 2 is the utility model embodiment bis-structural representations.
Fig. 3 is the utility model embodiment tri-structural representations.
Fig. 4 is the utility model embodiment tetra-structural representations.
Fig. 5 is the cutaway view at the corresponding yi word pattern cutting of battery case body trace place.
Fig. 6 is the utility model embodiment five, and housing two sides are battery case structure schematic diagrames with explosion prevention function of arc transition marginal texture.
Fig. 7 is the battery case structure front view that the utility model embodiment six has explosion prevention function.
Fig. 8 is the backsight structural representation of Fig. 7.
Reference numeral title: 1, battery case body, 2, yi word pattern cutting trace, 3, conductive metal sheet, 11, large plane.
Embodiment
Below just with reference to the accompanying drawings the utility model is further described.
embodiment mono-:as shown in Figure 1 and Figure 5, a kind of battery case with explosion prevention function, comprise a battery case body 1, one of them large plane 11 of battery case body 1 is provided with the yi word pattern cutting trace 2 of at least one inclination, yi word pattern cutting trace 2 is located at first right angle area near battery case body 1, can effectively prevent that this position, right angle area from deforming, and the shearing producing reduces the deformation extent that cell expansion produces.
Between the preferred yi word pattern cutting trace 2 of the utility model and the parallel edges of battery case body 1, have an angle theta, the angle of angle theta is selected in following scope: 1 °～44 °.Yi word pattern cutting trace 2 is obliquely installed, and is conducive to strengthen protection cell expansion region, effectively prevents the distortion of battery case bight.
The utility model preferred yi word pattern cutting one end of trace 2 and a right-angle side at battery case body 1 right angle have the first spacing a, and the yi word pattern cutting other end of trace 2 and another right-angle side at described battery case body 1 right angle have the second spacing b.Can strengthen protection cell expansion region, effectively prevent the distortion of battery case bight, greatly reduce the danger that battery expanded by heating is blasted.
The distance of preferred the first spacing a of the utility model is selected in following scope: 1 mm～5mm.Guarantee being obliquely installed of yi word pattern cutting trace 2.
The distance of preferred the second spacing b of the utility model is selected in following scope: 1 mm～5mm.Guarantee being obliquely installed of yi word pattern cutting trace 2.
The length of the preferred yi word pattern cutting of the utility model trace 2 is selected in following scope: 3mm～20mm.The length of yi word pattern cutting trace 2 can be determined according to large plane 11 sizes of battery case body 1.
The residual thickness d of the corresponding described yi word pattern cutting of the preferred battery case body 1 of the utility model trace 2 positions selects in following scope: 0.09 mm～0.15mm.When residual thickness lower than 0.09 mm below after, processing difficulties and easily make housing part too weak, is difficult to guarantee the mechanical strength of battery, cause cell fracture, leakage, be greater than 0.15mm when above, pressure release sensitivity declines, and cannot accomplish the effect of timely row pressure.
embodiment bis-:as shown in Figure 2, a kind of battery case with explosion prevention function, comprise a battery case body 1, one of them large plane 11 of battery case body 1 is provided with the yi word pattern cutting trace 2 of two inclinations, article two, yi word pattern cutting trace 2 is located at two corresponding right angle areas of battery case body 1, can effectively prevent that the second position, right angle area from deforming, and the shearing producing reduces the deformation extent that cell expansion produces.
embodiment tri-: as shown in Figure 3, a kind of battery case with explosion prevention function, comprise a battery case body 1, in two large planes 11 of battery case body 1, be respectively equipped with the yi word pattern cutting trace 2 of two inclinations, every two yi word patterns cutting trace 2 is located at two corresponding right angle areas of 1 two large planes 11 of battery case body, can effectively prevent that the 3rd position, right angle area from deforming, and the shearing producing reduces the deformation extent that cell expansion produces.
embodiment tetra-: as shown in Figure 4, a kind of battery case with explosion prevention function, comprise a battery case body 1, one of them large plane 11 of battery case body 1 is provided with the yi word pattern cutting trace 2 of two inclinations, article two, yi word pattern cuts trace 2 and is located at two right angle areas that one of them large plane 11 of battery case body 1 parallels, can effectively prevent that the 4th position, right angle area from deforming, and the shearing producing reduces the deformation extent that cell expansion produces.
embodiment five,as shown in Figure 6, the battery case body structure that is rectangle, the limit, the left and right sides of rectangle structure body is arc-shaped transitional surface, the yi word pattern cutting trace 2 that is respectively equipped with one, two, three or four inclination in one or two large plane 11 of battery case body 1, yi word pattern cutting trace 2 is arranged at the corner at top edge or lower limb and the described arc transition edge of battery case body 1 large plane 11; One end and the battery case body 1 arc transition edge of yi word pattern cutting trace 2 have the second spacing b; Between the yi word pattern cutting other end of trace 2 and the top edge of battery case body 1 or lower limb, have the first spacing a, the distance of the first spacing a is selected in following scope: 1 mm～5mm, and the distance of the second spacing b is selected in following scope: 1 mm～5mm; The length of described yi word pattern cutting trace 2 is selected in following scope: 3mm～20mm; The residual thickness d of yi word pattern cutting trace 2 positions selects in following scope: 0.09 mm～0.15mm.
As shown in Figure 6, provide a kind of above-mentioned battery with explosion prevention function shell that adopts, battery case 1 is aluminum enclosure, and battery unit is housed in it, and case top is fixed with the conductive metal sheet 3 being connected with battery unit.
embodiment six,as shown in Figure 7, Figure 8, a kind of battery case with explosion prevention function, battery case 1 body is the rectangle structure with four right-angle sides, in two large planes 11 of battery case body 1, be respectively provided with the yi word pattern cutting trace 2 of an inclination, yi word pattern cutting trace 2 in two large planes 11 arranges in the following way: the main cutting of the yi word pattern depending on large plane 11 trace 2 is arranged on the upper left corner of this large plane or the corner in the upper right corner, and the yi word pattern of the large plane 11 of backsight cutting trace 2 is arranged on the large plane 11 of backsight and the main corner of looking the relative angle of large plane 11.In the present embodiment, a=1.5 ± 0.5 mm, b=1 ± 0.5mm, c=8 ± 2mm, d=0.12 ± 0.03mm, has an angle theta between yi word pattern cutting trace 2 and the parallel edges of battery case body, and the angle of angle theta is selected in following scope: θ=15 ± 5 °,
Yi word pattern cutting one end of trace 2 and a right-angle side at battery case body 1 right angle have the first spacing a, and the yi word pattern cutting other end of trace 2 and another right-angle side at described battery case body 1 right angle have the second spacing b.The distance of the first spacing a is selected in following scope: 1 mm～5mm.Guarantee being obliquely installed of yi word pattern cutting trace 2.The distance of the second spacing b is selected in following scope: 1 mm～5mm.Guarantee being obliquely installed of yi word pattern cutting trace 2.
The length of yi word pattern cutting trace 2 is selected in following scope: 3mm～20mm.The length of yi word pattern cutting trace 2 can be determined according to large plane 11 sizes of battery case body 1.
The residual thickness d of the corresponding described yi word pattern cutting of battery case body 1 trace 2 positions selects in following scope: 0.09 mm～0.15mm.When residual thickness lower than 0.09 mm below after, processing difficulties and easily make housing part too weak, is difficult to guarantee the mechanical strength of battery, cause cell fracture, leakage, be greater than 0.15mm when above, pressure release sensitivity declines, and cannot accomplish the effect of timely row pressure.
The utility model can arrange respectively two of battery case 1 inclination 2, two yi word patterns of yi word pattern cutting trace in large plane 11 cut any one right-angle side that traces 2 are arranged at battery case 1 large plane 11; The yi word pattern cutting trace 2 of two inclinations also can be set in large plane 11 of battery case 1.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the utility model is not limited to embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection range of claim of the present utility model.In addition,, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (9)
1. a battery case with explosion prevention function, comprises a battery case body (1), it is characterized in that, at least one large plane (11) of described battery case body (1) is provided with the yi word pattern cutting trace (2) of at least one inclination.
2. the battery case with explosion prevention function according to claim 1, it is characterized in that, described battery case body is the rectangle structure with four right-angle sides, the yi word pattern cutting trace (2) that is respectively equipped with one, two, three or four inclination in one or two large plane (11) of described battery case body (1), described yi word pattern cutting trace (2) is arranged at the corner of any one right-angle side of the large plane (11) of described battery case body (1).
3. the battery case with explosion prevention function according to claim 1, it is characterized in that, described battery case body is the rectangle structure with four right-angle sides, in two large planes (11) of described battery case body (1), be respectively provided with the yi word pattern cutting trace (2) of an inclination, described yi word pattern cutting trace (2) arranges in the following way: the main cutting trace of the yi word pattern depending on large plane (11) (2) is arranged on the upper left corner of this large plane or the corner in the upper right corner, the yi word pattern of the large plane of backsight cutting trace (2) is arranged on the large plane of backsight and the main corner of looking the relative angle of large plane.
4. according to the battery case with explosion prevention function described in claim 2 or 3, it is characterized in that, between described yi word pattern cutting trace (2) and the parallel edges of described battery case body (1), have an angle theta, the angle of described angle theta is selected in following scope: 1 °～44 °.
5. the battery case with explosion prevention function according to claim 4, it is characterized in that, one end of described yi word pattern cutting trace (2) and a right-angle side at described battery case body (1) right angle have the first spacing a, and the other end of described yi word pattern cutting trace (2) and another right-angle side at described battery case body (1) right angle have the second spacing b; The length of described yi word pattern cutting trace (2) is selected in following scope: 3mm～20mm.
6. the battery case with explosion prevention function according to claim 5, is characterized in that, the distance of described the first spacing a is selected in following scope: 1 mm～5mm, the distance of described the second spacing b is selected in following scope: 1 mm～5mm.
7. according to the battery case with explosion prevention function described in claim 1 to 6 any one, it is characterized in that, the residual thickness d of the corresponding described yi word pattern cutting of described battery case body (1) trace (2) position selects in following scope: 0.09 mm～0.15mm.
8. the battery case with explosion prevention function according to claim 1, it is characterized in that: the described battery case body structure that is rectangle, the limit, the left and right sides of rectangle structure body is arc-shaped transitional surface, the yi word pattern cutting trace (2) that is respectively equipped with one, two, three or four inclination in one or two large plane (11) of described battery case body (1), described yi word pattern cutting trace (2) is arranged at the large top edge of plane (11) of described battery case body (1) or the corner at lower limb and described arc transition edge; One end and described battery case body (1) the arc transition edge of described yi word pattern cutting trace (2) have the second spacing b; Between the other end of described yi word pattern cutting trace (2) and the top edge of described battery case body (1) or lower limb, there is the first spacing a, the distance of described the first spacing a is selected in following scope: 1 mm～5mm, and the distance of described the second spacing b is selected in following scope: 1 mm～5mm; The length of described yi word pattern cutting trace (2) is selected in following scope: 3mm～20mm; The residual thickness d of described yi word pattern cutting trace (2) position selects in following scope: 0.09 mm～0.15mm.
9. adopt an above-mentioned battery with explosion prevention function shell, it is characterized in that, described in to have explosion prevention function outer cover body (1) be aluminum enclosure, battery unit is housed in it, case top is fixed with the conductive metal sheet (3) being connected with described battery unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064317.7U CN203787475U (en) | 2014-02-13 | 2014-02-13 | Battery shell with explosion-proof function and battery with shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064317.7U CN203787475U (en) | 2014-02-13 | 2014-02-13 | Battery shell with explosion-proof function and battery with shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203787475U true CN203787475U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064317.7U Expired - Fee Related CN203787475U (en) | 2014-02-13 | 2014-02-13 | Battery shell with explosion-proof function and battery with shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203787475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115149159A (en) * | 2022-09-02 | 2022-10-04 | 江苏时代新能源科技有限公司 | Shell, battery monomer, battery and consumer |
-
2014
- 2014-02-13 CN CN201420064317.7U patent/CN203787475U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115149159A (en) * | 2022-09-02 | 2022-10-04 | 江苏时代新能源科技有限公司 | Shell, battery monomer, battery and consumer |
| CN115149159B (en) * | 2022-09-02 | 2022-11-22 | 江苏时代新能源科技有限公司 | Shell, battery monomer, battery and consumer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20150213 |
|
| EXPY | Termination of patent right or utility model |