CN219739201U - Cover plate assembly and battery pack - Google Patents
Cover plate assembly and battery pack Download PDFInfo
- Publication number
- CN219739201U CN219739201U CN202320435850.9U CN202320435850U CN219739201U CN 219739201 U CN219739201 U CN 219739201U CN 202320435850 U CN202320435850 U CN 202320435850U CN 219739201 U CN219739201 U CN 219739201U
- Authority
- CN
- China
- Prior art keywords
- sealing
- cover plate
- section
- hole
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 79
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000010309 melting process Methods 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001225 polyester resin Polymers 0.000 claims description 4
- 239000004645 polyester resin Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a cover plate assembly, which is applied to a cylindrical battery and comprises the following components: the positive electrode cover plate is provided with a liquid injection hole in a penetrating manner along the thickness direction of the positive electrode cover plate; a sealing member which is connected in a sealing manner to the liquid injection hole; and the sealing element can be melted by heat, and the liquid injection hole is decompressed after the sealing element is melted. The utility model also provides a battery pack comprising the cover plate assembly. According to the embodiment, when the internal pressure of the battery does not reach the threshold value of the explosion-proof valve at the negative end after the short circuit occurs in the battery, the positive electrode cover plate is subjected to hot melting combination by the liquid injection hole and the sealing piece to perform positive electrode end pressure relief, so that the positive electrode end and the negative electrode end of the battery can be subjected to pressure relief, and the safety of the battery in the use process is effectively enhanced; and the sealing member also satisfies the sealability of the battery under normal working conditions.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a cover plate assembly and a battery pack.
Background
At present, higher requirements are put on the safety of lithium ion batteries in the market. When the battery fails, the pole pieces of the positive electrode and the negative electrode are internally short-circuited, and a large amount of gas and heat are generated. Therefore, a protection mechanism is added at the level of the battery core in the battery manufacturing process, so that the safety of the battery is improved.
The explosion-proof valve is arranged on the negative electrode cover plate in the market generally, so that the pressure is relieved in advance, the explosion of the battery is prevented, and the protection of the battery cell level can be improved to a certain extent. However, the pressure relief can be realized only when the pressure in the battery is accumulated to a certain degree to reach the opening valve value of the explosion-proof valve, so that the problem of the rapid increase of the internal pressure of the negative electrode end can be solved by means of the pressure relief of the explosion-proof valve of the negative electrode end.
However, when the battery is out of control, when the internal temperature of the battery reaches a certain high temperature, the diaphragm contracts to generate short circuit, the anode and the cathode and the diaphragm become solid completely, the internal pressure of the battery does not reach the threshold value of the explosion-proof valve at the moment, pressure release cannot be carried out, and the anode and the cathode and the diaphragm become solid completely to block a pressure release channel, so that the pressure release is poor, the safety coefficient is increased, a certain potential safety hazard still exists, and improvement exists.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an objective of the present utility model is to provide a cover plate assembly, which can release pressure at the positive electrode end, thereby enhancing the safety of the battery during use.
The utility model also provides a battery pack comprising the cover plate assembly.
The cover plate assembly according to the embodiment of the utility model is applied to a cylindrical battery and comprises:
the positive electrode cover plate is provided with a liquid injection hole in a penetrating manner along the thickness direction of the positive electrode cover plate;
and the sealing piece is connected in the liquid injection hole in a sealing way and is used for hot melting so as to open the liquid injection hole.
According to some embodiments of the utility model, one of the sealing member and the liquid injection hole is provided with a plurality of clamping members, and the other is provided with a plurality of clamping grooves;
the clamping pieces are sealed and clamped in the clamping grooves in a one-to-one correspondence mode.
According to some embodiments of the utility model, the seal comprises a first seal section and a second seal section that are fixed, and the injection hole comprises a first hole section and a second hole section that are communicated;
wherein the first sealing section is in sealing connection with the first hole section, and the second sealing section is in sealing connection with the second hole section;
according to some embodiments of the utility model, a plurality of the clamping pieces are arranged on the circumferential outer side surface of the first sealing section, and a plurality of the clamping grooves are arranged on the inner side surface of the first hole section;
or, a plurality of clamping grooves are formed in the circumferential outer side face of the first sealing section, and a plurality of clamping pieces are arranged in the inner side face of the first hole section.
According to some embodiments of the utility model, the first and second seal segments are cylindrical, the first seal segment having a diameter greater than the diameter of the second seal segment;
the first hole section and the second hole section are in a round hole shape, and the inner diameter of the first hole section is larger than that of the second hole section.
According to some embodiments of the utility model, the diameter of the second seal segment is greater than the inner diameter of the second bore segment.
According to some embodiments of the utility model, the injection well further comprises a third well section, the third well section being in communication with the second well section, the third well section having an inner diameter smaller than the second well section.
According to some embodiments of the utility model, the sealing member is provided as a plastic member, which is provided as a polypropylene member, a polyvinyl chloride member, or a polyester resin member.
According to some embodiments of the utility model, the sealing element and the clamping element are integrally formed in the liquid injection hole and the clamping groove through a hot melting process.
The battery pack according to the embodiment of the utility model comprises the cover plate assembly.
In summary, the cover plate assembly and the battery pack provided by the embodiment of the utility model have the following technical effects:
according to the embodiment, when the internal pressure of the battery does not reach the threshold value of the explosion-proof valve at the negative end after the short circuit occurs in the battery, the positive electrode cover plate is subjected to hot melting combination by the liquid injection hole and the sealing piece to perform positive electrode end pressure relief, so that the positive electrode end and the negative electrode end of the battery can be subjected to pressure relief, and the safety of the battery in the use process is effectively enhanced; and the sealing member also satisfies the sealability of the battery under normal working conditions.
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
FIG. 1 is an exploded view of a cover assembly according to an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a schematic view illustrating an internal structure of a cover plate assembly according to an embodiment of the present utility model;
FIG. 4 is an enlarged view of a portion of B in FIG. 3;
icon: the device comprises a 1-positive electrode cover plate, 11-liquid injection holes, 111-first hole sections, 112-second hole sections, 113-third hole sections, 2-sealing elements, 21-first sealing sections, 22-second sealing sections, 3-clamping elements, 4-clamping grooves, 5-insulating elements and 6-confluence plates.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The cover plate assembly and the battery pack according to the embodiments of the present utility model will be described below with reference to fig. 1 to 4, and some embodiments of the present utility model will be described below in detail with reference to the accompanying drawings, in which the following embodiments and features of the embodiments may be combined with each other without conflict.
At present, higher requirements are put on the safety of lithium ion batteries in the market. When the battery fails, the pole pieces of the positive electrode and the negative electrode are internally short-circuited, and a large amount of gas and heat are generated. Therefore, a protection mechanism is added at the level of the battery core in the battery manufacturing process, so that the safety of the battery is improved.
The explosion-proof valve is arranged on the negative electrode cover plate in the market generally, so that the pressure is relieved in advance, the explosion of the battery is prevented, and the protection of the battery cell level can be improved to a certain extent. However, the pressure relief can be realized only when the pressure in the battery is accumulated to a certain degree to reach the opening valve value of the explosion-proof valve, so that the problem of the rapid increase of the internal pressure of the negative electrode end can be solved by means of the pressure relief of the explosion-proof valve of the negative electrode end.
At present, higher requirements are put on the safety of lithium ion batteries in the market. When the battery fails, the pole pieces of the positive electrode and the negative electrode are internally short-circuited, and a large amount of gas and heat are generated. Therefore, a protection mechanism is added at the level of the battery core in the battery manufacturing process, so that the safety of the battery is improved.
The explosion-proof valve is arranged on the negative electrode cover plate in the market generally, so that the pressure is relieved in advance, the explosion of the battery is prevented, and the protection of the battery cell level can be improved to a certain extent. However, the pressure relief can be realized only when the pressure in the battery is accumulated to a certain degree to reach the opening valve value of the explosion-proof valve, so that the problem of the rapid increase of the internal pressure of the negative electrode end can be solved by means of the pressure relief of the explosion-proof valve of the negative electrode end.
However, when the internal temperature of the battery is at a certain high temperature, for example, the temperature reaches 140-200 ℃, the diaphragm contracts to generate short circuit, the anode and the cathode and the diaphragm become solid completely, the internal pressure of the battery does not reach the threshold value of the explosion-proof valve at the moment, pressure release cannot be performed, the anode and the cathode and the diaphragm become solid completely, a pressure release channel is blocked, pressure release is poor, the safety coefficient is increased, a certain potential safety hazard still exists, and improvement exists.
One embodiment of a cover plate assembly is presented with respect to fig. 1-4.
The cover plate assembly is applied to a cylindrical battery and comprises a positive electrode cover plate 1 and a sealing piece 2; the positive electrode cover plate 1 is provided with a liquid injection hole 11 in a penetrating manner along the thickness direction of the positive electrode cover plate, and the sealing piece 2 is connected in the liquid injection hole 11 in a sealing manner; the seal 2 is used for hot melt to open the pouring orifice 11. The sealing member 2 can be melted by heat, and the pouring hole 11 is depressurized after the sealing member 2 is melted.
According to this embodiment, after the positive and negative electrodes in the battery are shorted, the internal heat increases rapidly, the sealing member 2 melts after the temperature reaches the melting point of the sealing member 2, a large amount of gas and heat generated by the battery can be discharged from the liquid injection hole 11 of the positive electrode cover plate 1, and the positive electrode end is depressurized. It should be noted that the pressure relief means that a large amount of gas and heat are generated in the battery after the positive and negative electrodes are shorted, but the internal pressure does not reach the threshold value of the explosion-proof valve at the negative electrode end, and the pressure relief cannot be performed from the explosion-proof valve at the negative electrode end, but the sealing member 2 is melted due to rapid temperature rise, so that the pressure relief can be performed from the liquid injection hole 11 at the positive electrode end.
In summary, when the short circuit occurs in the battery but the internal pressure does not reach the opening threshold value of the explosion-proof valve at the negative end, the positive electrode cover plate 1 adopts the hot melting combination of the liquid injection hole 11 and the sealing piece 2 to release the pressure at the positive electrode end, so that the positive electrode end and the negative electrode end of the battery can release the pressure, and the safety of the battery in the use process is effectively enhanced; and, the sealing member 2 also satisfies the sealability of the battery under normal operation.
And preferably, the sealing member 2 is provided as a plastic member, which is provided as a polypropylene member, a polyvinyl chloride member, or a polyester resin member. Wherein, the melting point range of polypropylene is 148-176 ℃, the melting point range of polyvinyl chloride is 150-200 ℃, and the melting point range of polyester resin is 140-150 ℃, so that the sealing piece 2 with different melting points can be selected according to battery packs with different models or sizes to adapt to practical situations.
Specifically, according to fig. 1 to 4, in order to improve structural stability, one of the sealing member 2 and the liquid injection hole 11 is provided with a plurality of clamping members 3, and the other is provided with a plurality of clamping grooves 4; the clamping pieces 3 are sealed in a one-to-one correspondence manner and are clamped in the clamping grooves 4. And preferably, the sealing member 2 is provided with a plurality of clamping members 3, and the liquid injection hole 11 is provided with a plurality of clamping grooves 4. Of course, in other embodiments, the sealing member 2 is provided with a plurality of clamping grooves 4, and the liquid injection hole 11 is provided with a plurality of clamping members 3.
According to the embodiment, the sealing element 2 and the liquid injection hole 11 are assembled and sealed through the matching effect of the clamping groove 4 and the clamping element 3, so that the tightness of the battery under normal working conditions is met, and the safety of the battery in the use process is enhanced.
And preferably, the injection hole 11 may be formed into a regular clamping groove 4 by laser processing, and the sealing member 2 and the clamping member 3 are integrally formed in the injection hole 11 and the clamping groove 4 by a hot melting process, for example, the sealing member 2 is exemplified by the sealing member 2, the sealing member 2 may be manufactured by adopting a hot melting process, and a raw material for manufacturing the sealing member 2 is pressed into the injection hole 11 of the positive electrode cover plate 1 by adopting the hot melting process, so as to form the sealing member 2 adapted to the shapes of the injection hole 11 and the clamping groove 4, wherein the hot melting process includes but is not limited to hot plate heating, infrared heating, and the like, so as to realize tightness. It should be noted that, the raw materials are pressed into the liquid injection hole 11 and the clamping groove 4 of the positive electrode cover plate 1 by adopting a hot melting process, and the sealing element 2 and the clamping element 3 can be manufactured by integral molding, so as to improve the tightness.
In particular, according to fig. 1-4, the seal 2 comprises a first seal segment 21 and a second seal segment 22 fixed to each other, the injection orifice 11 comprising a first orifice segment 111 and a second orifice segment 112 in communication; wherein the first sealing section 21 is connected in a sealing manner to the first hole section 111, and the second sealing section 22 is connected in a sealing manner to the second hole section 112; one of the first seal segment 21 and the first hole segment 111 is provided with a plurality of engaging pieces 3, and the other is provided with a plurality of engaging grooves 4. And preferably, the first sealing section 21 is provided with a plurality of clamping pieces 3, and the first hole section 111 is provided with a plurality of clamping grooves 4. Of course, in other embodiments, the first seal segment 21 is provided with a plurality of clamping grooves 4 and the first bore segment 111 is provided with a plurality of clamping members 3. And also preferably, the bottom of the first seal segment 21 is fixedly attached to the top of the second seal segment 22.
And preferably, a plurality of clamping pieces 3 are arranged on the circumferential outer side surface of the first sealing section 21, and a plurality of clamping grooves 4 are arranged on the inner side surface of the first hole section 111, wherein the clamping grooves 4 also extend to the top end surface of the positive electrode cover plate 1. Of course, in other embodiments, the circumferential outer side of the first seal segment 21 is provided with a plurality of clamping grooves 4, and the inner side of the first bore segment 111 is provided with a plurality of clamping members 3.
And preferably, the first seal segment 21 and the second seal segment 22 are cylindrical, the diameter of the first seal segment 21 being greater than the diameter of the second seal segment 22; the first hole section 111 and the second hole section 112 are circular hole-shaped, and the inner diameter of the first hole section 111 is larger than the inner diameter of the second hole section 112.
According to the present embodiment, the first seal segment 21 and the second seal segment 22 in the seal member 2 form a spike-like structure, the first hole segment 111 and the second hole segment 112 in the liquid injection hole 11 form a stepped hole, and when the seal member 2 is assembled in the liquid injection hole 11, the bottom of the first seal segment 21 abuts against and seals against the inner bottom surface of the first hole segment 111, so that a T-like structure can be formed, and the overall sealing performance can be improved.
In particular, according to fig. 1-4, the diameter of the second seal segment 22 is greater than the inner diameter of the second bore segment 112 for improved sealing. In this way, the seal member 2 can be more tightly sealed in the pouring spout 11.
Specifically, according to fig. 1-4, the injection hole 11 further includes a third hole section 113, the third hole section 113 is communicated with the second hole section 112, and the third hole section 113 has an inner diameter smaller than that of the second hole section 112, so that the bottom of the second sealing section 22 abuts against and seals against the inner bottom surface of the second hole section 112. And preferably the first, second and third bore sections 111, 112, 113 are coaxially arranged. And it is also preferable that the first hole section 111, the second hole section 112, and the third hole section 113 are disposed in order in the top-to-bottom direction of the positive electrode cap plate 1.
According to the present embodiment, the second hole section 112 and the third hole section 113 in the liquid injection hole 11 form a stepped hole, when the sealing member 2 is assembled in the liquid injection hole 11, the bottom of the first sealing section 21 will abut against and seal against the inner bottom surface of the first hole section 111, and the bottom of the second sealing section 22 abuts against and seals against the inner bottom surface of the second hole section 112, so as to form a multi-section bent sealing structure, thereby further improving the overall sealing performance.
Specifically, according to fig. 1-4, the present cover plate assembly further comprises an insulating member 5 and a bus plate 6, wherein the insulating member 5 is connected to the bottom of the positive electrode cover plate 1, and the bus plate 6 is connected to the bottom of the insulating member 5. Thus, the insulating member 5 can separate the positive electrode cover plate 1 and the bus plate 6, and prevent the positive electrode cover plate 1 from directly contacting the bus plate 6 to influence the normal use of the battery.
The embodiment of the utility model provides not only the positive electrode cover plate 1, but also a battery pack comprising the positive electrode cover plate 1, wherein the battery pack can be specifically arranged into a storage battery, a fuel battery and a lithium battery, such as a lead-acid storage battery, a nickel-hydrogen battery, a lithium cobalt oxide battery, a lithium iron phosphate battery, a ternary lithium battery and the like.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that numerous modifications and adaptations will be apparent to those skilled in the art without departing from the principles of the present utility model, and such modifications and adaptations are intended to be within the scope of the present utility model.
Claims (10)
1. Cover plate subassembly is applied to cylinder battery, its characterized in that includes:
a positive electrode cover plate (1) which is provided with a liquid injection hole (11) in a penetrating manner along the thickness direction of the positive electrode cover plate;
and the sealing piece (2) is connected in the liquid injection hole (11) in a sealing way, and the sealing piece (2) is used for hot melting so as to open the liquid injection hole (11).
2. The cover plate assembly according to claim 1, wherein one of the sealing member (2) and the liquid injection hole (11) is provided with a plurality of clamping members (3), and the other is provided with a plurality of clamping grooves (4);
the clamping pieces (3) are sealed and clamped in the clamping grooves (4) in a one-to-one correspondence mode.
3. The cover plate assembly according to claim 2, wherein the sealing member (2) comprises a first sealing section (21) and a second sealing section (22) which are fixed, and the liquid injection hole (11) comprises a first hole section (111) and a second hole section (112) which are communicated;
wherein the first sealing section (21) is in sealing connection with the first hole section (111), and the second sealing section (22) is in sealing connection with the second hole section (112).
4. A cover plate assembly according to claim 3, wherein the circumferential outer side of the first sealing section (21) is provided with a plurality of clamping pieces (3), and the inner side of the first hole section (111) is provided with a plurality of clamping grooves (4);
or, a plurality of clamping grooves (4) are formed in the circumferential outer side face of the first sealing section (21), and a plurality of clamping pieces (3) are arranged in the inner side face of the first hole section (111).
5. A cover plate assembly according to claim 3, wherein the first sealing section (21) and the second sealing section (22) are cylindrical, the diameter of the first sealing section (21) being larger than the diameter of the second sealing section (22);
the first hole section (111) and the second hole section (112) are in a round hole shape, and the inner diameter of the first hole section (111) is larger than the inner diameter of the second hole section (112).
6. A cover plate assembly according to claim 3, wherein the diameter of the second sealing section (22) is larger than the inner diameter of the second bore section (112).
7. A cover plate assembly according to claim 3, wherein the liquid injection hole (11) further comprises a third hole section (113), the third hole section (113) being in communication with the second hole section (112), the third hole section (113) having an inner diameter smaller than the second hole section (112).
8. The cover plate assembly according to claim 1, wherein the sealing member (2) is provided as a plastic member, which is provided as a polypropylene member, a polyvinyl chloride member or a polyester resin member.
9. The cover plate assembly according to claim 2, wherein the sealing member (2) and the clamping member (3) are integrally formed in the liquid injection hole (11) and the clamping groove (4) through a hot melting process.
10. Battery pack, characterized in that it comprises a cover plate assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320435850.9U CN219739201U (en) | 2023-03-08 | 2023-03-08 | Cover plate assembly and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320435850.9U CN219739201U (en) | 2023-03-08 | 2023-03-08 | Cover plate assembly and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219739201U true CN219739201U (en) | 2023-09-22 |
Family
ID=88052106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320435850.9U Active CN219739201U (en) | 2023-03-08 | 2023-03-08 | Cover plate assembly and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219739201U (en) |
-
2023
- 2023-03-08 CN CN202320435850.9U patent/CN219739201U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4183673B2 (en) | Secondary battery and method for manufacturing secondary battery | |
| JP2019135719A (en) | Bipolar battery assembly | |
| CN212182379U (en) | Aluminum-shell cylindrical battery with directional pressure relief at bottom | |
| CN211629141U (en) | Battery cover plate structure | |
| CN113871763A (en) | Cylindrical battery case, cylindrical battery, and cylindrical battery mounting method | |
| CN215418343U (en) | Battery top cap | |
| CN105531848A (en) | Cap assembly including safety belt having leakage path blocking protrusion part, and lithium secondary battery including same | |
| CN219739201U (en) | Cover plate assembly and battery pack | |
| CN116581446A (en) | End cover assembly, battery cell and energy storage device | |
| CN210006770U (en) | kinds of battery top covers and power battery | |
| CN207896132U (en) | Power battery head cover safety device | |
| CN215342741U (en) | Cover plate device for lithium battery | |
| CN209929450U (en) | Battery cover plate assembly and power battery | |
| KR20050018269A (en) | A Can Shape with Many Sets of Safety Vents in Rechargeable Batteries | |
| CN211088326U (en) | Sealing element for top cover of lithium ion battery | |
| CN215377531U (en) | Square battery cover plate | |
| CN215184159U (en) | Lead accumulator for preventing thermal runaway | |
| CN219759908U (en) | Top cap subassembly and battery | |
| CN219811635U (en) | Lithium ion battery | |
| CN220934333U (en) | Battery top cover and battery | |
| CN214753921U (en) | Lithium battery with reliable packaging structure | |
| CN219106332U (en) | Cover plate, top cover assembly and battery | |
| CN217387484U (en) | Power battery and vehicle | |
| CN219626860U (en) | Battery cover plate and battery | |
| CN221009072U (en) | Positive and negative electrode cover plate assembly of full tab and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |