CN219610698U - Liquid injection structure for lithium battery and square lithium ion battery sealing plate - Google Patents
Liquid injection structure for lithium battery and square lithium ion battery sealing plate Download PDFInfo
- Publication number
- CN219610698U CN219610698U CN202320751759.8U CN202320751759U CN219610698U CN 219610698 U CN219610698 U CN 219610698U CN 202320751759 U CN202320751759 U CN 202320751759U CN 219610698 U CN219610698 U CN 219610698U
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- Prior art keywords
- liquid
- liquid injection
- hole
- seepage
- cover plate
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- 239000007788 liquid Substances 0.000 title claims abstract description 208
- 238000002347 injection Methods 0.000 title claims abstract description 106
- 239000007924 injection Substances 0.000 title claims abstract description 106
- 238000007789 sealing Methods 0.000 title claims abstract description 47
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 25
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 24
- 230000002093 peripheral effect Effects 0.000 claims abstract description 26
- 239000000565 sealant Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 31
- 239000001307 helium Substances 0.000 abstract description 26
- 229910052734 helium Inorganic materials 0.000 abstract description 26
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract description 26
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model provides a liquid injection structure for a lithium battery and a square lithium ion battery sealing plate. The liquid injection structure for the lithium battery comprises a liquid injection part and a liquid seepage part, wherein the liquid injection part is formed on the cover plate, and the liquid seepage part is formed on lower plastic connected with the cover plate; the liquid injection part is internally provided with a liquid injection groove, the bottom of the liquid injection groove is provided with a liquid injection through hole, the bottom of the liquid injection part is provided with a boss on one side of the cover plate adjacent to the lower plastic, the outer peripheral wall of the boss is adapted to the inner peripheral wall of the liquid seepage part, a liquid seepage channel is formed between the boss and the liquid seepage part, the bottom of the liquid seepage part is provided with liquid seepage micropores, and the liquid seepage channels are respectively communicated with the liquid injection through hole and the liquid seepage micropores. The liquid injection part and the liquid seepage part are correspondingly matched, a liquid seepage channel is formed between the boss sub-part and the liquid seepage part, so that helium or electrolyte sequentially passes through the liquid injection through hole, the liquid seepage channel and the liquid seepage micropore to be injected into the battery cell, the impact on the diaphragm during helium detection or electrolyte injection is reduced more effectively, and the problem of battery short circuit is avoided.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a liquid injection structure for a lithium battery and a square lithium ion battery sealing plate.
Background
At present, a lithium battery sealing plate is used as an important part of a square lithium ion battery, and relates to the forming and PACK application of the lithium ion battery. When the square lithium ion battery monomer is molded, the working procedures such as helium gas detection and electrolyte injection are needed, the internal pole pieces of the square lithium ion battery are manufactured through the lamination, the positive pole pieces and the negative pole pieces are separated by the diaphragm, the diaphragm is softer, and the lower plastic part of the existing sealing plate does not protect the position of the liquid injection hole, so that the diaphragm is easily blown and folded in the working procedures such as helium gas detection and electrolyte injection, the contact of the internal positive pole pieces and the negative pole pieces of the battery is caused, short circuit is caused, and the battery core is scrapped.
Therefore, chinese patent No. CN210073932U proposes a protection structure for a liquid injection hole of a lithium battery sealing plate and a lithium battery sealing plate thereof, which is provided with a concave guide groove at a position of a lower plastic part corresponding to the liquid injection hole, and is matched with the liquid injection hole, so that the risk of blowing and folding a diaphragm inside the battery can be effectively reduced when helium is detected and electrolyte is injected, and the problem of short circuit caused by contact of positive and negative plates is further reduced.
In the technical scheme of the above patent, through setting up concave guide slot and notes liquid hole cooperation, can reduce the risk that the inside diaphragm of battery was blown and folded to a certain extent, but because the inner chamber of concave guide slot is great, in the process of actual helium detection or annotating electrolyte, the helium or electrolyte through concave guide slot in the unit time are more to lead to great to the impact of diaphragm, and then appear the problem of battery short circuit.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a liquid injection structure for a lithium battery and a square lithium ion battery sealing plate, which can more effectively reduce impact on a diaphragm during helium gas detection or electrolyte injection, so as to avoid the problem of short circuit of the battery.
The aim of the utility model is realized by the following technical scheme:
the liquid injection structure for the lithium battery comprises a liquid injection part and a liquid seepage part, wherein the liquid injection part is formed on a cover plate, and the liquid seepage part is formed on lower plastic connected with the cover plate; the liquid injection device is characterized in that a liquid injection groove is formed in the liquid injection part, a liquid injection through hole is formed in the bottom of the liquid injection groove, a boss is formed at the bottom end of the liquid injection part, which is adjacent to one side of the lower plastic cement, of the cover plate, the outer peripheral wall of the boss is adapted to the inner peripheral wall of the liquid seepage part, a liquid seepage channel is formed between the boss and the liquid seepage part, liquid seepage micropores are formed in the bottom end of the liquid seepage part, and the liquid seepage channel is respectively communicated with the liquid injection through hole and the liquid seepage micropores.
In one embodiment, the liquid injection structure for the lithium battery further comprises a sealant nail, and the sealant nail is in interference fit with the inner wall of the liquid injection through hole.
In one embodiment, the liquid injection structure for the lithium battery further comprises a sealing cover, the sealing cover is covered and connected to the inner wall of the liquid injection groove, and the sealing cover is abutted to the sealing glue nail.
In one embodiment, the number of the seepage micro-holes is multiple, and the seepage micro-holes are uniformly distributed at the bottom end of the seepage part.
In one embodiment, each of the weeping microwells is circular.
In one embodiment, a liquid outlet hole is formed in the peripheral wall of the liquid seepage portion, and the liquid outlet hole is communicated with the liquid seepage channel.
The utility model provides a square lithium ion battery sealing plate, includes the lithium cell of above-mentioned arbitrary embodiment is with annotating liquid structure, still includes positive pole, negative pole post, apron, lower plastic and two insulating rings, the apron is formed with two via holes, lower plastic is formed with two perforation, two the perforation with two the via hole one-to-one sets up, the positive pole post wears to locate in proper order one the via hole and the perforation that corresponds, just the one end that the positive pole post deviates from the apron is used for connecting in the positive pole piece, the negative pole post wears to locate another in proper order the via hole and the perforation that corresponds, the one end that the negative pole post deviates from the apron is used for connecting in the negative pole piece, one the insulating ring cup joint in the positive pole post and with the peripheral wall butt of corresponding via hole, another insulating ring cup joint in the negative pole post and with the peripheral wall butt of corresponding via hole.
In one embodiment, the sealing plate of the square lithium ion battery further comprises two sealing rings, one sealing ring is arranged between the positive pole and the corresponding inner peripheral wall of the through hole and is in butt joint with the corresponding insulating ring, and the other sealing ring is arranged between the negative pole and the corresponding inner peripheral wall of the through hole and is in butt joint with the corresponding insulating ring.
In one embodiment, the square lithium ion battery sealing plate further comprises an explosion-proof piece, and the explosion-proof piece is arranged on the cover plate.
In one embodiment, the cover plate is an aluminum cover plate.
Compared with the prior art, the utility model has the following advantages:
1. through the corresponding matching arrangement of the liquid injection part and the liquid permeation part, a liquid permeation channel is formed between the boss sub-part and the liquid permeation part, and the liquid permeation channel is respectively communicated with the liquid injection through hole and the liquid permeation micropore, so that helium or electrolyte is sequentially injected into the battery cell through the liquid injection through hole, the liquid permeation channel and the liquid permeation micropore, and the arrangement of the liquid permeation micropore greatly reduces the helium or the electrolyte passing through the liquid permeation micropore in unit time, thereby more effectively reducing the impact on a diaphragm when the helium is detected or the electrolyte is injected, avoiding the problem of short circuit of the battery, and further improving the safety and the yield of the battery;
2. the seepage part is directly formed in the lower plastic, so that the structure of the product is simpler, the practicability is higher, and the popularization and the production are easy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a square sealing plate of a lithium ion battery in an embodiment;
fig. 2 is an exploded view of the sealing plate of the square lithium ion battery shown in fig. 1;
fig. 3 is an enlarged view of the sealing plate of the square lithium ion battery shown in fig. 2 at a;
fig. 4 is another schematic structural view of the sealing plate of the square lithium ion battery shown in fig. 1;
fig. 5 is a cross-sectional view of the square lithium ion battery sealing plate shown in fig. 4 along the line B-B.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
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 term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model provides a liquid injection structure for a lithium battery, which comprises a liquid injection part and a liquid seepage part, wherein the liquid injection part is formed on a cover plate, and the liquid seepage part is formed on lower plastic connected with the cover plate; the liquid injection device is characterized in that a liquid injection groove is formed in the liquid injection part, a liquid injection through hole is formed in the bottom of the liquid injection groove, a boss is formed at the bottom end of the liquid injection part, which is adjacent to one side of the lower plastic cement, of the cover plate, the outer peripheral wall of the boss is adapted to the inner peripheral wall of the liquid seepage part, a liquid seepage channel is formed between the boss and the liquid seepage part, liquid seepage micropores are formed in the bottom end of the liquid seepage part, and the liquid seepage channel is respectively communicated with the liquid injection through hole and the liquid seepage micropores.
In order to better understand the technical scheme and beneficial effects of the present utility model, the following describes the present utility model in further detail with reference to specific embodiments:
referring to fig. 1 to 5, the liquid injection structure for a lithium battery in a square lithium ion battery sealing plate 10 according to an embodiment of the utility model includes a liquid injection portion 310 and a liquid permeation portion 410, wherein the liquid injection portion 310 is formed on a cover plate 300, and the liquid permeation portion 410 is formed on a lower plastic 400 connected with the cover plate 300; the liquid injection portion 310 is internally provided with a liquid injection groove 3101, the bottom of the liquid injection groove 3101 is provided with a liquid injection through hole 3102, the bottom end of the liquid injection portion 310 is provided with a boss sub-portion 312 at one side of the cover plate 300 adjacent to the lower plastic 400, the outer circumferential wall of the boss sub-portion 312 is adapted to the inner circumferential wall of the liquid permeation portion 410, a liquid permeation channel 4101 is formed between the boss sub-portion 312 and the liquid permeation portion 410, the bottom end of the liquid permeation portion 410 is provided with a liquid permeation micropore 4102, and the liquid permeation channel 4101 is respectively communicated with the liquid injection through hole 3102 and the liquid permeation micropore 4102.
In the present embodiment, the cover 300 is formed with a liquid injection portion 310, the lower plastic 400 is formed with a liquid seepage portion 410, and since the bottom end of the liquid injection portion 310 is formed with a boss sub-portion 312 at one side of the cover 300 adjacent to the lower plastic 400, the outer peripheral wall of the boss sub-portion 312 is adapted to the inner peripheral wall of the liquid seepage portion 410, and the cover 300 is connected with the lower plastic 400, so that the liquid injection portion 310 and the liquid seepage portion 410 are correspondingly matched and arranged, and the boss sub-portion 312 is located in the inner cavity of the liquid seepage portion 410; in addition, a liquid injection groove 3101 is formed in the liquid injection part 310, a liquid injection through hole 3102 is formed at the bottom of the liquid injection groove 3101, a liquid permeation channel 4101 is formed between the boss sub-part 312 and the liquid permeation part 410, a liquid permeation micropore 4102 is formed at the bottom end of the liquid permeation part 410, the liquid permeation channel 4101 is respectively communicated with the liquid injection through hole 3102 and the liquid permeation micropore 4102, and it can be understood that the liquid permeation micropore 4102 is used for injecting helium or electrolyte into the electric core; therefore, in the helium gas detection or electrolyte injection process, helium gas or electrolyte sequentially enters the electrolyte permeation channel 4101 through the tank of the electrolyte injection part 310 and the electrolyte injection through hole 3102, and finally enters the cell through the electrolyte permeation micro hole 4102. It is worth mentioning that, because the aperture of the weeping micropore 4102 is smaller than that of the weeping through hole 3102, the helium or electrolyte passing through the weeping micropore 4102 in unit time is greatly reduced, and the impact to the diaphragm during helium detection or electrolyte injection is more effectively reduced, thereby avoiding the problem of short circuit of the battery.
In this embodiment, by correspondingly matching the liquid injection part 310 with the liquid permeation part 410, a liquid permeation channel 4101 is formed between the boss part 312 and the liquid permeation part 410, and since the liquid permeation channel 4101 is respectively communicated with the liquid injection through hole 3102 and the liquid permeation micropore 4102, helium or electrolyte is sequentially injected into the electric core through the liquid injection through hole 3102, the liquid permeation channel 4101 and the liquid permeation micropore 4102, and the liquid permeation micropore 4102 is arranged, so that the impact on a diaphragm during helium detection or electrolyte injection is greatly reduced in unit time, thereby avoiding the problem of short circuit of the battery and further improving the safety and yield of the battery; the liquid seepage part 410 is directly formed on the lower plastic 400, so that the structure of the product is simpler, the practicability is higher, and the popularization and the production are easy.
In one embodiment, referring to fig. 2 and 5, the liquid injection structure for a lithium battery further includes a sealant nail 320, where the sealant nail 320 is in interference fit with the inner wall of the liquid injection through hole 3102. In this embodiment, the liquid injection through hole 3102 is blocked by providing the sealant nail 320, so that the liquid leakage after the injection of the electrolyte is prevented.
Further, referring to fig. 2 and 5, the liquid injection structure for a lithium battery further includes a sealing cover 330, the sealing cover 330 covers the inner wall of the liquid injection groove 3101, and the sealing cover 330 abuts against the sealant nails 320. Thus, by arranging the sealing cover 330, the liquid injection groove 3101 is plugged, so that a better sealing effect can be achieved, and the appearance of the product is more attractive.
In one embodiment, referring to fig. 3, the number of the seepage micro-holes 4102 is plural, and the seepage micro-holes 4102 are uniformly distributed at the bottom end of the seepage portion 410. In this embodiment, by disposing a plurality of weeping micropores 4102 at the bottom end of the weeping portion 410, helium or electrolyte is dispersed and injected into the battery core, which is beneficial to reducing impact of helium or electrolyte on the diaphragm, avoiding short circuit problem of the battery, and improving efficiency of helium detection and electrolyte injection.
Further, with continued reference to fig. 3, each of the weeping micro holes 4102 is circular. In another embodiment, each of the weeping wells 4102 is oval in shape. In yet another embodiment, each of the weeping wells 4102 is triangular in shape.
In one embodiment, referring to fig. 3, a liquid outlet hole 4103 is formed on the peripheral wall of the liquid permeable portion 410, and the liquid outlet hole 4103 communicates with the liquid permeable channel 4101. In the present embodiment, by forming the liquid outlet hole 4103 on the peripheral wall of the liquid permeable portion 410, and the liquid outlet hole 4103 is in communication with the liquid permeable channel 4101, it can be understood that the problem of deformation of the lower plastic 400 is easy, and in order to prevent the problem of failure to inject helium or electrolyte due to dead angle of the liquid permeable micro hole 4102, the liquid outlet hole 4103 is opened, so that helium or electrolyte is injected into the battery cell through the liquid outlet hole 4103.
Referring to fig. 1 and 2, the present utility model further provides a sealing plate 10 for a square lithium ion battery, which includes the liquid injection structure for a lithium ion battery according to any of the embodiments described above, and further includes a positive electrode post 100, a negative electrode post 200, a cover plate 300, a lower plastic 400, and two insulating rings 500, wherein the cover plate 300 is formed with two through holes 301, the lower plastic 400 is formed with two through holes 401, the two through holes 401 are disposed in one-to-one correspondence with the two through holes 301, the positive electrode post 100 sequentially penetrates through one through hole 301 and the corresponding through hole 401, one end of the positive electrode post 100 away from the cover plate 300 is used for being connected to a positive electrode plate (not shown), the negative electrode post 200 sequentially penetrates through the other through hole 301 and the corresponding through hole 401, one end of the negative electrode post 200 is used for being connected to a negative electrode plate (not shown), one insulating ring 500 is abutted against the peripheral wall of the positive electrode post 100 and the corresponding through hole 301, and the other insulating ring 500 is abutted against the peripheral wall of the corresponding through hole 200.
In one embodiment, referring to fig. 1 and 2, the sealing plate 10 for square lithium ion battery further includes two sealing rings 600, one sealing ring 600 is disposed between the positive electrode post 100 and the corresponding inner peripheral wall of the via 301 and is in contact with the corresponding insulating ring 500, and the other sealing ring 600 is disposed between the negative electrode post 200 and the corresponding inner peripheral wall of the via 301 and is in contact with the corresponding insulating ring 500.
In one embodiment, referring to fig. 1 and 2, the sealing plate 10 for square lithium ion battery further includes an explosion-proof member 700, and the explosion-proof member 700 is disposed on the cover 300.
In one embodiment, the cover plate 300 is an aluminum cover plate.
Compared with the prior art, the utility model has the following advantages:
1. through the corresponding matching arrangement of the liquid injection part and the liquid permeation part, a liquid permeation channel is formed between the boss sub-part and the liquid permeation part, and the liquid permeation channel is respectively communicated with the liquid injection through hole and the liquid permeation micropore, so that helium or electrolyte is sequentially injected into the battery cell through the liquid injection through hole, the liquid permeation channel and the liquid permeation micropore, and the arrangement of the liquid permeation micropore greatly reduces the helium or the electrolyte passing through the liquid permeation micropore in unit time, thereby more effectively reducing the impact on a diaphragm when the helium is detected or the electrolyte is injected, avoiding the problem of short circuit of the battery, and further improving the safety and the yield of the battery;
2. the seepage part is directly formed in the lower plastic, so that the structure of the product is simpler, the practicability is higher, and the popularization and the production are easy.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The liquid injection structure for the lithium battery comprises a liquid injection part and a liquid seepage part, wherein the liquid injection part is formed on a cover plate, and the liquid seepage part is formed on lower plastic connected with the cover plate; it is characterized in that the method comprises the steps of,
the liquid injection device is characterized in that a liquid injection groove is formed in the liquid injection part, a liquid injection through hole is formed in the bottom of the liquid injection groove, a boss is formed at the bottom end of the liquid injection part, which is adjacent to one side of the lower plastic cement, of the cover plate, the outer peripheral wall of the boss is adapted to the inner peripheral wall of the liquid seepage part, a liquid seepage channel is formed between the boss and the liquid seepage part, liquid seepage micropores are formed in the bottom end of the liquid seepage part, and the liquid seepage channel is respectively communicated with the liquid injection through hole and the liquid seepage micropores.
2. The liquid injection structure for a lithium battery according to claim 1, further comprising a sealant nail in interference fit with an inner wall of the liquid injection through hole.
3. The liquid injection structure for a lithium battery according to claim 2, further comprising a sealing cover, wherein the sealing cover is covered and connected to the inner wall of the liquid injection groove, and the sealing cover is abutted with the sealing glue nail.
4. The liquid injection structure for a lithium battery according to claim 1, wherein the number of the liquid permeation micropores is plural, and the liquid permeation micropores are uniformly distributed at the bottom end of the liquid permeation portion.
5. The liquid injection structure for a lithium battery according to claim 4, wherein each of the liquid-permeable micro-holes has a circular shape.
6. The liquid injection structure for a lithium battery according to claim 1, wherein a liquid outlet hole is formed in a peripheral wall of the liquid permeation portion, and the liquid outlet hole communicates with the liquid permeation channel.
7. The sealing plate for the square lithium ion battery is characterized by comprising the liquid injection structure for the lithium battery according to any one of claims 1 to 6, and further comprising a positive pole, a negative pole, a cover plate, lower plastic and two insulating rings, wherein two through holes are formed in the cover plate, two through holes are formed in the lower plastic, the two through holes and the two through holes are arranged in one-to-one correspondence, the positive pole sequentially penetrates through one through hole and the corresponding through hole, one end of the positive pole, which is away from the cover plate, is used for being connected with a positive plate, the other through hole and the corresponding through hole are sequentially penetrated through by the negative pole, one end of the negative pole, which is away from the cover plate, is used for being connected with a negative plate, one insulating ring is sleeved on the positive pole and is abutted with the corresponding peripheral wall of the through hole, and the other insulating ring is sleeved on the negative pole and is abutted with the corresponding peripheral wall of the through hole.
8. The sealing plate of claim 7, further comprising two sealing rings, one sealing ring being disposed between the positive electrode post and the corresponding inner peripheral wall of the via hole and abutting against the corresponding insulating ring, and the other sealing ring being disposed between the negative electrode post and the corresponding inner peripheral wall of the via hole and abutting against the corresponding insulating ring.
9. The sealing plate of square lithium ion battery of claim 7, further comprising an explosion-proof member disposed on the cover plate.
10. The sealing plate for square lithium ion batteries of claim 7, wherein said cover plate is an aluminum cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320751759.8U CN219610698U (en) | 2023-03-30 | 2023-03-30 | Liquid injection structure for lithium battery and square lithium ion battery sealing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320751759.8U CN219610698U (en) | 2023-03-30 | 2023-03-30 | Liquid injection structure for lithium battery and square lithium ion battery sealing plate |
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| Publication Number | Publication Date |
|---|---|
| CN219610698U true CN219610698U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320751759.8U Active CN219610698U (en) | 2023-03-30 | 2023-03-30 | Liquid injection structure for lithium battery and square lithium ion battery sealing plate |
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| CN (1) | CN219610698U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116937026A (en) * | 2023-09-15 | 2023-10-24 | 厦门海辰储能科技股份有限公司 | Lower plastic, top cover assembly and battery |
| CN117855773A (en) * | 2024-03-04 | 2024-04-09 | 厦门海辰储能科技股份有限公司 | Top cover assembly, sealing process of liquid injection hole, energy storage device and energy storage system |
-
2023
- 2023-03-30 CN CN202320751759.8U patent/CN219610698U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116937026A (en) * | 2023-09-15 | 2023-10-24 | 厦门海辰储能科技股份有限公司 | Lower plastic, top cover assembly and battery |
| CN116937026B (en) * | 2023-09-15 | 2023-12-29 | 厦门海辰储能科技股份有限公司 | Lower plastic, top cover assembly and battery |
| CN117855773A (en) * | 2024-03-04 | 2024-04-09 | 厦门海辰储能科技股份有限公司 | Top cover assembly, sealing process of liquid injection hole, energy storage device and energy storage system |
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Effective date of registration: 20231222 Address after: Building 1, No. 2, Shiqiaopu East Road, High tech Zone, Mianyang City, Sichuan Province, 621000 Patentee after: Mianyang High tech Exxon New Energy Technology Co.,Ltd. Address before: Room 601, Building 4, Building 2, Dachong Business Center (Phase I), No. 9672, Shennan Avenue, Dachong Community, Yuehai Street, Nanshan District, Shenzhen, Guangdong, 518000 Patentee before: Shenzhen Exxon New Energy Technology Co.,Ltd. |