CN218896709U - Battery case and battery - Google Patents
Battery case and battery Download PDFInfo
- Publication number
- CN218896709U CN218896709U CN202223281251.0U CN202223281251U CN218896709U CN 218896709 U CN218896709 U CN 218896709U CN 202223281251 U CN202223281251 U CN 202223281251U CN 218896709 U CN218896709 U CN 218896709U
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- explosion
- proof
- positioning member
- battery
- battery case
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a battery shell and a battery, wherein the battery shell comprises a shell body and an explosion-proof valve, a vent hole is formed in the shell body, and a limit mounting surface is formed in the inner peripheral wall of the vent hole; the explosion-proof valve detachably installs in the air vent, and the explosion-proof valve includes explosion-proof piece and setting element, and the explosion-proof piece supports in spacing installation face, and setting element and casing detachable connection, setting element and explosion-proof piece butt to with explosion-proof piece location in spacing installation face. According to the battery case provided by the embodiment of the utility model, the explosion-proof valve is arranged on the case of the battery case and comprises the explosion-proof piece and the positioning piece, the positioning piece can detachably position the explosion-proof piece on the limit mounting surface of the case, and when the explosion-proof valve is detonated or damaged, the explosion-proof valve can be replaced or maintained by disassembling the positioning piece.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery shell and a battery.
Background
In the related art, the explosion-proof valves of the lithium battery are all welded and integrally formed on the battery shell and are all disposable explosion-proof valves; once the explosion-proof valve is detonated, the whole battery cell is scrapped, so that the later maintenance cost is increased, and huge waste of resources is caused.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery case, on which an explosion-proof valve is mounted, the explosion-proof valve includes an explosion-proof plate and a positioning member, the positioning member detachably positions the explosion-proof plate on a limit mounting surface of the case, and when the explosion-proof valve is detonated or damaged, the explosion-proof valve can be replaced or maintained by removing the positioning member.
The utility model further provides a battery with the battery shell.
According to the battery case of the embodiment of the first aspect of the utility model, the case is provided with the vent hole, and the inner peripheral wall of the vent hole is provided with the limit mounting surface; the explosion-proof valve, explosion-proof valve detachably install in the air vent, explosion-proof valve includes explosion-proof piece and setting element, explosion-proof piece support in spacing installation face, the setting element with the casing is detachable to be connected, the setting element with explosion-proof piece butt, in order to with the explosion-proof piece is located spacing installation face.
According to the battery case provided by the embodiment of the utility model, the explosion-proof valve is arranged on the case of the battery case and comprises the explosion-proof piece and the positioning piece, the positioning piece can detachably position the explosion-proof piece on the limit mounting surface of the case, and when the explosion-proof valve is detonated or damaged, the explosion-proof valve can be replaced or maintained by disassembling the positioning piece.
According to some embodiments of the utility model, the positioning member is threadably coupled to the housing.
According to some alternative embodiments of the present utility model, the positioning member is in threaded connection with an inner peripheral wall of the vent hole, a through hole which is opposite to and communicated with the vent hole is formed in the positioning member, the through hole communicates the vent hole with the outside, and an axial inner end surface of the positioning member abuts against the explosion-proof sheet so as to position the explosion-proof sheet on the limit mounting surface.
According to some alternative embodiments of the present utility model, at least one pair of clamping grooves is formed on an inner peripheral wall of the positioning member, each pair of clamping grooves is disposed opposite to each other along a radial direction of the positioning member, the clamping grooves penetrate through an axially outer end surface of the positioning member, and an dismounting tool is adapted to cooperate with the clamping grooves to dismount the positioning member.
According to some alternative embodiments of the present utility model, the two pairs of the clamping grooves are arranged, wherein one pair of the clamping grooves is arranged oppositely along a first direction, and the other pair of the clamping grooves is arranged oppositely along a second direction, and the first direction is perpendicular to the second direction.
According to some alternative embodiments of the utility model, a portion of the retainer is located outside the vent hole to protrude from an outer surface of the housing.
According to some embodiments of the utility model, a sealing ring is arranged between the limit mounting surface and the explosion-proof valve; wherein, the sealing ring is coated with a sealing grease layer; and/or a first accommodating groove is formed on the limit mounting surface, a second accommodating groove is formed on the explosion-proof valve, and part of the sealing ring is accommodated in the first accommodating groove and the other part of the sealing ring is accommodated in the second accommodating groove.
According to some embodiments of the utility model, the explosion-proof sheet includes an explosion-proof portion and a mounting portion, the mounting portion surrounds an outer peripheral side of the explosion-proof portion, a thickness of the explosion-proof portion is smaller than a thickness of the mounting portion, the mounting portion is supported on the limit mounting surface, the positioning member abuts against the mounting portion to position the explosion-proof sheet on the limit mounting surface, and a cross score is formed on the explosion-proof portion.
According to some embodiments of the utility model, the vent is formed as a stepped bore and includes a first bore section and a second bore section, the first bore section being axially outboard of the second bore section, the first bore section having a cross-sectional area greater than a cross-sectional area of the second bore section, a stepped surface formed between the first bore section and the second bore section constituting the limit mounting surface.
A battery according to an embodiment of the second aspect of the present utility model includes: the battery case according to the embodiment of the above first aspect of the present utility model; and the battery cell is arranged in the battery shell.
According to the battery provided by the embodiment of the utility model, by arranging the battery shell, after the explosion-proof valve is detonated or damaged, the explosion-proof valve can be replaced or maintained by disassembling the positioning piece.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a perspective view of a cover plate of a battery case according to some embodiments of the present utility model;
FIG. 2 is an enlarged view at A in FIG. 1;
fig. 3 is a top view of a cover plate of the battery case of fig. 1;
fig. 4 is an enlarged view at B in fig. 3;
fig. 5 is a partial sectional view of a cover plate of the battery case of fig. 1.
Reference numerals:
1. a cover plate; 11. a vent hole; 12. a limit mounting surface; 121. a first accommodation groove; 13. a step hole; 131. a first bore section; 132. a second bore section;
2. an explosion-proof valve; 21. a positioning piece; 211. a through hole; 212. an axially inner end face; 213. an axially outer end face; 214. a clamping groove; 22. explosion-proof sheet; 221. a mounting part; 2211. a second accommodation groove; 222. an explosion-proof section; 2221. cross nicks;
3. and (3) sealing rings.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
A battery case according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.
According to the battery case of the embodiment of the first aspect of the present utility model, referring to fig. 1 to 5, the battery case includes a case body and an explosion-proof valve 2, a vent 11 is formed on the case body, for example, the case body may include a main case body, one side of which is open, a cover plate 1 may be provided to cover the open side of the main case body, and the vent 11 may be formed on the cover plate 1. The inner peripheral wall of the vent hole 11 is formed with a limit mounting surface 12, the explosion-proof valve 2 is detachably mounted on the vent hole 11, the explosion-proof valve 2 comprises an explosion-proof sheet 22 and a positioning piece 21, the explosion-proof sheet 22 is supported on the limit mounting surface 12, and the limit mounting surface 12 has a supporting effect on the explosion-proof sheet 22.
Wherein the positioning member 21 is detachably connected with the housing, for example, the positioning member 21 and the housing may be detachably connected by threads. The positioning piece 21 abuts against the explosion-proof piece 22 to position the explosion-proof piece 22 on the limit mounting surface 12. The explosion-proof sheet 22 may be mounted on the limit mounting surface 12 first, and then the positioning member 21 is connected with the housing, and the positioning member 21 may fix the explosion-proof sheet 22 on the limit mounting surface 12; the positioning piece 21 is detachably connected with the shell, when the explosion-proof valve 2 is detonated or damaged, the positioning piece 21 can be detached from the shell, the explosion-proof piece 22 can be detached from the limit mounting surface 12, and the explosion-proof valve 2 can be replaced or maintained.
According to the battery case of the embodiment of the utility model, the explosion-proof valve 2 is arranged on the case of the battery case, the explosion-proof valve 2 comprises the explosion-proof piece 22 and the positioning piece 21, the positioning piece 21 can detachably position the explosion-proof piece 22 on the limit mounting surface 12 of the case, and when the explosion-proof valve 2 is detonated or damaged, the explosion-proof valve 2 can be replaced or maintained by disassembling the positioning piece 21.
According to some embodiments of the present utility model, referring to fig. 5, the positioning member 21 is screwed with the housing, and the positioning member 21 may be fixed to the housing by the screw, so that the assembling process of the positioning member 21 and the housing may be simple and easy to operate.
According to some alternative embodiments of the present utility model, referring to fig. 5, the positioning member 21 is screwed with the inner circumferential wall of the vent hole 11, for example, an external thread may be formed on the outer circumferential wall of the positioning member 21, a through hole 211 is formed on the positioning member 21, the through hole 211 is opposite to and communicates with the vent hole 11, and the through hole 211 communicates the vent hole 11 with the outside, for example, the positioning member 21 may be a through hole fastener. The axially inner end surface 212 of the positioning member 21 (the axially inner end surface 212 of the positioning member 21 is an axially end surface of the positioning member 21 near the center of the housing) abuts against the explosion-proof plate 22, the positioning member 21 can position the explosion-proof plate 22 on the limit mounting surface 12, and the positioning member 21 detachably mounts the explosion-proof plate 22 to the housing. When a large amount of gas is generated in the battery case, the explosion-proof sheet 22 may be flushed by the large amount of gas, the vent hole 11 may communicate with the through hole 211, the through hole 211 may communicate with the outside, and the large amount of gas may be discharged from the vent hole 11 and the through hole 211 to the outside, so that explosion of the battery may be prevented.
According to some alternative embodiments of the present utility model, referring to fig. 1 to 5, at least one pair of the clamping grooves 214 is formed on the inner circumferential wall of the positioning member 21, and one pair of the clamping grooves 214 may be formed on the inner circumferential wall of the positioning member 21, or a plurality of pairs of the clamping grooves 214 may be formed on the inner circumferential wall of the positioning member 21. Each pair of clamping grooves 214 are oppositely arranged along the radial direction of the positioning piece 21, the clamping grooves 214 penetrate through the axial outer end face 213 of the positioning piece 21 (the axial outer end face 213 of the positioning piece 21 is the axial end face, far away from the center of the shell, of the positioning piece 21), the dismounting tool is suitable for being matched with the clamping grooves 214 to dismount the positioning piece 21, at least one pair of clamping grooves 214 are arranged on the inner peripheral wall of the positioning piece 21, the dismounting tool can be conveniently and rapidly matched with any pair of clamping grooves 214, and meanwhile the dismounting tool can be conveniently and rapidly dismounted the positioning piece 21. For example, the removal tool may be a straight screwdriver.
According to some alternative embodiments of the present utility model, referring to fig. 1-5, the card slots 214 are two pairs, wherein one pair of card slots 214 is disposed opposite to each other along a first direction (e.g., referring to the e1 direction in the drawings), and the other pair of card slots 214 is disposed opposite to each other along a second direction (e.g., referring to the e2 direction in the drawings), and the first direction is perpendicular to the second direction. By providing two pairs of the clamping grooves 214 on the inner peripheral wall of the positioning member 21, the convenient dismounting tool can be matched with any pair of the clamping grooves 214 rapidly, and meanwhile, the positioning member 21 can be dismounted rapidly by using the dismounting tool conveniently. For example, the removal tool may be a straight screwdriver.
According to some alternative embodiments of the present utility model, referring to fig. 1 to 5, a portion of the positioning member 21 is located outside the vent hole 11 and protrudes from the outer surface of the housing, for example, when the vent hole 11 is formed on the cover plate 1 of the housing, a portion of the positioning member 21 protrudes from the outer surface of the cover plate 1. A liquid injection hole is formed in the cover plate 1 of the shell, and electrolyte can be injected into the shell through the liquid injection hole; part of the positioning piece 21 protrudes out of the outer surface of the cover plate 1, so that electrolyte can be prevented from corroding the explosion-proof valve 2 when the electrolyte is injected.
According to some embodiments of the present utility model, referring to fig. 5, a sealing ring 3 is disposed between the limit mounting surface 12 and the explosion-proof valve 2, and the sealing ring 3 may be used to seal a gap between the limit mounting surface 12 and the explosion-proof valve 2, so that the air tightness of the explosion-proof valve 2 may be ensured. Wherein, sealing grease layer is coated on sealing ring 3, can further guarantee explosion-proof valve 2's gas tightness.
According to some embodiments of the present utility model, referring to fig. 5, the limit mounting surface 12 is formed with the first receiving groove 121, the explosion-proof valve 2 is formed with the second receiving groove 2211, and a part of the sealing ring 3 is received in the first receiving groove 121 and another part is received in the second receiving groove 2211, so that the sealing ring 3 can better seal the gap between the limit mounting surface 12 and the explosion-proof valve 2, and the air tightness of the explosion-proof valve 2 can be further ensured.
According to some embodiments of the present utility model, referring to fig. 5, the explosion-proof sheet 22 includes an explosion-proof portion 222 and a mounting portion 221, a sealing ring 3 is disposed between the limit mounting surface 12 and the mounting portion 221, and a second receiving groove 2211 is formed in the mounting portion 221. The mounting portion 221 surrounds the outer circumferential side of the explosion-proof portion 222, and the mounting portion 221 may be connected to the outer circumferential wall of the explosion-proof portion 222. The thickness of the explosion-proof portion 222 is smaller than that of the mounting portion 221, the mounting portion 221 is supported on the limit mounting surface 12, the positioning member 21 abuts against the mounting portion 221, the axial inner end surface 212 of the positioning member 21 (the axial inner end surface 212 of the positioning member 21 is the axial end surface near the center of the housing, which designates the positioning member 21) abuts against the mounting portion 221, and the positioning member 21 can position the explosion-proof sheet 22 on the limit mounting surface 12. The thickness of the explosion-proof portion 222 is smaller than that of the mounting portion 221, and the positioning member 21 can mount the explosion-proof portion 222 of the explosion-proof sheet 22 more firmly. The thickness of the explosion-proof part 222 is smaller than that of the mounting part 221, and a cross notch 2221 is formed on the explosion-proof part 222, so that when the explosion-proof valve 2 reaches a threshold value, a large amount of gas in the shell can easily burst the explosion-proof piece 22 from the cross notch 2221, and the explosion-proof part 222 can be rapidly detonated to timely protect the safety of the battery cell.
According to some embodiments of the present utility model, referring to fig. 5, the vent hole 11 is formed as a stepped hole 13, and the stepped hole 13 includes a first hole section 131 and a second hole section 132, the first hole section 131 being located axially outside the second hole section 132 (the axially outside means that the first hole section 131 is located on a side of the second hole section 132 remote from the center of the housing). The cross section area of the first hole section 131 is larger than that of the second hole section 132, and a step surface formed between the first hole section 131 and the second hole section 132 forms a limiting mounting surface 12, so that the explosion-proof valve 2 is mounted on the first hole section 131, and the explosion-proof valve 2 can be conveniently mounted.
According to the battery of the embodiment of the second aspect of the utility model, the battery comprises a battery shell and an electric core, and the battery shell is the battery shell according to the embodiment of the first aspect of the utility model; the electric core is arranged in the battery shell. The explosion-proof valve 2 is arranged on the battery shell, when a large amount of gas is generated in the shell, the explosion-proof valve 2 can be broken through by a large amount of gas, and a large amount of gas can be discharged to the outside from the vent hole 11, so that the explosion of the battery can be avoided.
According to the battery of the embodiment of the utility model, by arranging the battery case, when the explosion-proof valve 2 is detonated or damaged, the explosion-proof valve 2 can be replaced or maintained by disassembling the positioning piece 21.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery case, comprising:
the shell is provided with a vent hole, and the inner peripheral wall of the vent hole is provided with a limit mounting surface;
the explosion-proof valve, explosion-proof valve detachably install in the air vent, explosion-proof valve includes explosion-proof piece and setting element, explosion-proof piece support in spacing installation face, the setting element with the casing is detachable to be connected, the setting element with explosion-proof piece butt, in order to with the explosion-proof piece is located spacing installation face.
2. The battery case of claim 1, wherein the positioning member is screw-coupled with the housing.
3. The battery case according to claim 2, wherein the positioning member is screwed to an inner peripheral wall of the vent hole, a through hole is formed in the positioning member so as to be opposite to and communicate with the vent hole, the through hole communicates with the vent hole and the outside, and an axially inner end surface of the positioning member abuts against the explosion-proof sheet so as to position the explosion-proof sheet on the limit mounting surface.
4. A battery case according to claim 3, wherein at least one pair of clamping grooves is formed in an inner peripheral wall of the positioning member, each pair of clamping grooves being disposed opposite to each other in a radial direction of the positioning member, the clamping grooves penetrating through an axially outer end face of the positioning member, and a dismounting tool being adapted to cooperate with the clamping grooves to dismount the positioning member.
5. The battery case according to claim 4, wherein the two pairs of the clamping grooves are arranged in a first direction, one pair of the clamping grooves is arranged in a second direction, and the other pair of the clamping grooves is arranged in a first direction, wherein the first direction is perpendicular to the second direction.
6. A battery case according to claim 3, wherein a portion of the positioning member is located outside the vent hole so as to protrude from an outer surface of the case.
7. The battery case according to claim 1, wherein a seal ring is provided between the limit mounting surface and the explosion-proof valve;
wherein, the sealing ring is coated with a sealing grease layer; and/or a first accommodating groove is formed on the limit mounting surface, a second accommodating groove is formed on the explosion-proof valve, and part of the sealing ring is accommodated in the first accommodating groove and the other part of the sealing ring is accommodated in the second accommodating groove.
8. The battery case according to claim 1, wherein the explosion-proof sheet includes an explosion-proof portion and a mounting portion, the mounting portion surrounds an outer peripheral side of the explosion-proof portion, a thickness of the explosion-proof portion is smaller than a thickness of the mounting portion, the mounting portion is supported on the limit mounting surface, the positioning member abuts against the mounting portion to position the explosion-proof sheet on the limit mounting surface, and a cross score is formed on the explosion-proof portion.
9. The battery case according to claim 1, wherein the vent hole is formed as a stepped hole and includes a first hole section and a second hole section, the first hole section being located axially outside the second hole section, a cross-sectional area of the first hole section being larger than a cross-sectional area of the second hole section, a stepped surface formed between the first hole section and the second hole section constituting the limit mounting surface.
10. A battery, comprising:
the battery case according to any one of claims 1 to 9;
and the battery cell is arranged in the battery shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223281251.0U CN218896709U (en) | 2022-12-07 | 2022-12-07 | Battery case and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223281251.0U CN218896709U (en) | 2022-12-07 | 2022-12-07 | Battery case and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218896709U true CN218896709U (en) | 2023-04-21 |
Family
ID=85999667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223281251.0U Active CN218896709U (en) | 2022-12-07 | 2022-12-07 | Battery case and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218896709U (en) |
-
2022
- 2022-12-07 CN CN202223281251.0U patent/CN218896709U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |