CN117638390A - A breathable pressure relief tab, pressure relief device and soft pack battery - Google Patents
A breathable pressure relief tab, pressure relief device and soft pack battery Download PDFInfo
- Publication number
- CN117638390A CN117638390A CN202311516944.XA CN202311516944A CN117638390A CN 117638390 A CN117638390 A CN 117638390A CN 202311516944 A CN202311516944 A CN 202311516944A CN 117638390 A CN117638390 A CN 117638390A
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- base
- breathable
- tab
- pressure
- 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.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims 3
- 239000000463 material Substances 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229920000098 polyolefin Polymers 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/136—Flexibility or foldability
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a breathable pressure relief tab, a pressure relief device and a soft package battery, wherein the pressure relief device comprises a base and a high-breathability functional film, a second-order counter bore is formed in the base, a breathable first backing is stuck on a step table of the second-order counter bore, the first backing shields a step opening of the second-order counter bore, the top of the base is stuck with the high-breathability functional film, and the high-breathability functional film shields an upper opening of the second-order counter bore. The invention realizes the function of exhausting and decompressing the soft package battery.
Description
Technical Field
The invention belongs to the technical field of batteries, in particular to the fields of lithium ion batteries and sodium ion batteries, and particularly relates to a breathable pressure relief tab, a pressure relief device and a soft package battery.
Background
Existing tab devices generally include metal components and insulating films, and no vent channels are designed. When the tab device and the Al Pocket bag are packaged and manufactured into a battery (a lithium ion battery, a sodium ion battery and the like), side reactions can occur in the process of recycling the battery, the side reactions generally occur along with the generation of gas, the pressure in the battery is increased along with the continuous accumulation of the gas, and when the pressure reaches a certain limit value, the weak link of the Al Pocket bag of the battery shell is broken, so that the leakage of the battery core is caused; in severe cases, this may cause safety hazards, resulting in immeasurable losses. Therefore, the release of pressure inside the battery is of great importance to the safety thereof. For a hard shell battery, an explosion-proof valve can be set on the cover plate, and when the internal pressure of the battery reaches a certain threshold value, the explosion-proof valve is triggered so as to achieve the aim of pressure relief. For the soft package battery, the design, assembly, functions and the like of the explosion-proof valve are difficult to realize because the Al Foil packaging bag shell is made of soft materials; but the pressure relief of the exhaust is also a current urgent problem to be solved by the soft package battery.
The conventional tab component is a metal conductor and an insulating film, and the metal conductor and the insulating film are heat-sealed and bonded together at high temperature, so that the bonding strength can reach 2N/mm. The insulating film is made of polypropylene material, and can penetrate CO when the thickness of the insulating film is 100um 2 The amount of (C) is generally about 1500 ml/(m2.24h.0.1 MPa); because the metal conductor component of the prior tab is not provided with an exhaust channel, when the tab and the Al pocket packaging bag are packaged, the thickness of the insulating film through which gas is required to permeate is the height of the insulating film, which is generally 10mm or more, so that the insulating film after top packaging is a gas-proof film. However, in the process of recycling the battery core, the pressure inside the battery gradually gathers and cannot be released; when the internal pressure reaches a certain limit value, the weakest link of the packaging bag, such as a side sealing edge or a top sealing edge, or the R angle position of the Al pocket packaging bag, is broken, and the battery leakage is caused, so that the serious loss is caused. Therefore, there is an urgent need to implement the function of venting the pouch cell.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the breathable pressure relief tab, the pressure relief device and the soft-package battery aiming at the defects in the prior art, so that the function of exhausting and relieving the pressure of the soft-package battery is realized.
The invention discloses a pressure relief device for a breathable pressure relief tab, which comprises a base and a high-breathability functional film, wherein a second-order counter bore is formed in the base, a breathable first backing is stuck on a stepped platform of the second-order counter bore, the first backing shields a stepped opening of the second-order counter bore, the high-breathability functional film is stuck on the top of the base, and the high-breathability functional film shields an upper opening of the second-order counter bore.
Above-mentioned pressure release device for ventilative pressure release utmost point ear, high ventilative functional film pastes at the top of base through first carrier film.
The second aspect of the invention discloses a breathable pressure relief tab, wherein a base ventilation opening and a gas guide channel are formed in the surface of the tab, the gas guide channel is communicated with the base ventilation opening, the pressure relief device according to the first aspect is arranged on the base ventilation opening, and a base in the pressure relief device is attached to the periphery of the base ventilation opening to form shielding of the base ventilation opening.
Above-mentioned ventilative pressure release utmost point ear, the air guide channel upper cover is equipped with the cover plate.
Above-mentioned ventilative pressure release utmost point ear, be provided with annular secondary backing in the base ventilative mouth.
Above-mentioned ventilative pressure release utmost point ear, perforated slot has been seted up to air guide channel bottom.
Above-mentioned ventilative pressure release utmost point ear, the base in the pressure release device is pasted in base ventilative mouthful periphery through the second carrier film.
The invention discloses a soft package battery, which comprises the breathable pressure-relief tab and a battery package as described in the second aspect, wherein the breathable pressure-relief tab is arranged at a battery package sealing position through a top sealing edge, and the rear end of an air guide channel of the breathable pressure-relief tab extends into the battery package.
According to the soft package battery, the top sealing edge is a sealing interface formed by fusing the sealing functional film material and the Al Pocket packaging bag in a sealing mode.
Compared with the prior art, the invention has the following advantages: the base ventilation port and the air guide channel formed in the surface of the tab allow air in the battery pack to be discharged, so that the purpose of reducing pressure is achieved, and electrolyte is not discharged under the ventilation function due to the high ventilation function film in the process of exhausting and pressure relief.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a pressure relief device.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a schematic structural diagram of a ventilation and pressure relief tab.
Fig. 4 is a B-B cross-sectional view of fig. 3.
Fig. 5 is an enlarged view at a in fig. 4.
Fig. 6 is an enlarged view at B in fig. 4.
Fig. 7 is a schematic view of a soft package battery with sealed venting and pressure relief tabs.
Reference numerals illustrate:
1-a base; 2-high air permeability functional film; 3-a primary backing;
4-second-order counter bore; 5-a first carrier film; 6-pole lugs;
7-a base ventilation port; 8-an air guide channel; 9-cover plate;
10-a secondary backing; 11-a perforated slot; 12-a second carrier film;
13-battery pack; 14-sealing functional film; 15-top edge sealing.
Detailed Description
Example 1
As shown in fig. 1 and fig. 2, a pressure relief device for a ventilation and pressure relief tab comprises a base 1 and a high ventilation functional film 2, wherein a second-order counter bore 4 is formed in the base 1, a breathable first backing 3 is stuck on a stepped platform of the second-order counter bore 4, the first backing 3 shields a stepped opening of the second-order counter bore 4, the high ventilation functional film 2 is stuck on the top of the base 1, and the high ventilation functional film 2 shields an upper opening of the second-order counter bore 4.
The primary backing 3 may have any thickness and any shape (preferably 0.5mm to 1.0 mm), and has an external dimension not larger than that of the counter bore of the base 1, and is made of a highly breathable fluorine-containing material.
The thickness of the high ventilation functional film 2 is not less than 30um (preferably 150 um-200 um), the shape can be round, square, polygonal and the like, the external dimension is not greater than the base 1, and the ventilation channel of the base 1 can be completely covered; the material is mainly polyolefin; the structure is a single-layer or multi-layer structure; the single-layer structure can use polyolefin materials, and the single-layer structure has stronger bonding strength with PP materials; modified polyolefin materials containing polar groups such as carboxyl, hydroxyl, double bond, carbonyl, amino, etc. may also be used. The melting point is 110-170 ℃ generally, and the adhesive force with metal is stronger. The multi-layer structure at least comprises one layer of polyolefin material which has stronger bonding strength with the PP film material; or at least comprises a layer of modified polyolefin material containing polar groups such as carboxyl groups, hydroxyl groups, double bonds, carbonyl groups, amino groups, etc. The melting point is 110-170 ℃ generally, and the adhesive force with metal is stronger.
The base 1 can be of any thickness (preferably 0.1 mm-1.0 mm) and any size, and can be round, square, polygonal and the like; the material can be metal materials such as high-purity aluminum or aluminum nickel plating, high-purity copper or copper nickel plating, high-purity nickel, copper-aluminum alloy, aluminum-nickel alloy and other metal materials; or polymer material such as polyolefin material such as PP film or sheet.
In this embodiment, the high air permeability functional film 2 is attached to the top of the base 1 through the first base film 5.
The first base film 5 may have any thickness and any shape (preferably 50um to 100 um), and has an external dimension not larger than that of the base 1, and is made of a modified polyolefin material. It has stronger adhesive force with metal or with polyolefin materials such as PP, etc.
Example 2
As shown in fig. 3-6, a breathable pressure release tab 6 is provided, wherein a base ventilation opening 7 and an air guide channel 8 are formed on the surface of the tab 6, the air guide channel 8 is communicated with the base ventilation opening 7, the pressure release device described in embodiment 1 is mounted on the base ventilation opening 7, and a base 1 in the pressure release device is attached to the periphery of the base ventilation opening 7 to form shielding of the base ventilation opening 7.
The tab 6 is a metal conductor, and may be any size, preferably has a thickness of 0.4mm to 1.5mm and a width of 20mm to 200mm, and is made of high-purity aluminum or aluminum nickel plating, high-purity copper or copper nickel plating, high-purity nickel, copper-aluminum alloy, aluminum-nickel alloy, or other metal materials; the main function is a carrier for energy transfer;
in this embodiment, the upper cover of the air guide channel 8 is provided with a cover plate 9.
It should be noted that, the cover plate 9 may be made of a polymer material or a metal material (preferably consistent with the conductor of the tab 6, such as high-purity aluminum and copper nickel-plated metal); can be of any size, and the thickness is preferably 0.1 mm-0.3 mm; the shape can be round, square, polygonal, other special-shaped and the like;
in this embodiment, the annular second backing 10 is disposed in the base ventilation opening 7, and the second backing 10 may be of any thickness and any shape, and is made of a high-ventilation fluorine-containing material. The second backing 10 can play a supporting role on the tab 6, so that the tab 6 is not easy to deform greatly. The secondary backing 10 is also arranged to absorb free electrolyte to prevent the electrolyte from drying and crystallizing in the vent for a long period of time, thereby blocking the base vent 7
In this embodiment, a perforation slot 11 is formed at the bottom of the air guide channel 8. The perforated groove 11 may be of any size, and preferably has a width of 0.1mm to 0.6mm.
It should be noted that, the purpose of the perforated slot 11 is that when the tab 6 is heated, the second backing 10 may be deformed by heat, and the perforated slot 11 may eliminate the force applied to the tab 6 by the deformation of the second backing 10, thereby playing the role of shrinkage joint.
In addition, the purpose of the perforated slot 11 is that when the tab 6 is formed by punching, the air guide channel 8 has a certain punching depth, and the punching allowance generated by the punching depth is easy to deform the tab 6; after the perforated groove 11 is formed, the press allowance can overflow through the perforated groove 11, thereby eliminating the deformation of the tab 6.
In this embodiment, the base 1 in the pressure relief device is attached to the periphery of the base ventilation opening 7 through the second bottom film 12.
Example 3
As shown in fig. 7, a soft package battery comprises the breathable pressure-releasing tab 6 and a battery package 13 according to embodiment 2, wherein the breathable pressure-releasing tab 6 is mounted at a sealing position of the battery package 13 through a top sealing edge 15, and the rear end of an air guide channel 8 of the breathable pressure-releasing tab 6 extends into the battery package 13.
In this embodiment, the top sealing edge 15 is a sealing interface between the sealing functional film 14 and the Al Pocket packaging bag.
In use, when the side reaction in the battery pack 13 generates gas, the gas enters through the rear end of the gas guide channel 8 of the ventilation and pressure relief tab 6, is discharged into the base ventilation opening 7 from the front end of the gas guide channel 8, and finally is discharged out through the high ventilation functional film 2 on the pressure relief device.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a pressure relief device for ventilative pressure release utmost point ear, its characterized in that includes base and high ventilative functional membrane, the second order counter bore has been seted up on the base, the top of base has high ventilative functional membrane, high ventilative functional membrane forms the shielding to the upper portion opening of second order counter bore.
2. The pressure relief device for the breathable pressure relief tab of claim 1 wherein a breathable primary backing is attached to the stepped platform of the secondary counterbore, the primary backing shielding the stepped opening of the secondary counterbore.
3. The pressure relief device for a breathable and pressure relief tab of claim 1 wherein said high breathable functional film is attached to the top of the base through a first carrier film.
4. The breathable pressure relief tab is characterized in that a base ventilation opening and an air guide channel are formed in the surface of the tab, the air guide channel is communicated with the base ventilation opening, the pressure relief device as claimed in claim 1, 2 or 3 is arranged on the base ventilation opening, and a base in the pressure relief device is attached to the periphery of the base ventilation opening to form shielding of the base ventilation opening.
5. The breathable pressure relief tab of claim 4 wherein said air guide channel upper cover is provided with a cover plate.
6. A breathable pressure relief tab according to claim 4, wherein an annular secondary backing is disposed within the base vent.
7. The breathable pressure relief tab of claim 4 wherein the bottom of the air guide channel is provided with a perforated slot.
8. The breathable pressure relief tab of claim 4 wherein the base of the pressure relief device is attached to the perimeter of the breathable opening of the base by a second backing film.
9. A soft package battery, which is characterized by comprising the breathable pressure-relief tab and a battery package according to any one of claims 4-8, wherein the breathable pressure-relief tab is arranged at a battery package opening through a top sealing edge, and the rear end of an air guide channel of the breathable pressure-relief tab extends into the battery package.
10. A pouch cell according to claim 9, wherein the top seal is a seal interface between the seal functional film and the Al pouch package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311516944.XA CN117638390A (en) | 2023-11-13 | 2023-11-13 | A breathable pressure relief tab, pressure relief device and soft pack battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311516944.XA CN117638390A (en) | 2023-11-13 | 2023-11-13 | A breathable pressure relief tab, pressure relief device and soft pack battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117638390A true CN117638390A (en) | 2024-03-01 |
Family
ID=90024472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311516944.XA Pending CN117638390A (en) | 2023-11-13 | 2023-11-13 | A breathable pressure relief tab, pressure relief device and soft pack battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117638390A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115485918A (en) * | 2021-03-08 | 2022-12-16 | 株式会社Lg新能源 | Battery cell and battery cell manufacturing apparatus for manufacturing battery cell |
| CN115816949A (en) * | 2022-10-28 | 2023-03-21 | 安徽顶极新材料有限公司 | Ventilation valve and processing method thereof |
| CN116190904A (en) * | 2023-02-22 | 2023-05-30 | 安徽顶极新材料有限公司 | Breathable pressure relief tab and processing method thereof |
| CN117013163A (en) * | 2023-08-24 | 2023-11-07 | 深圳市方厚新能科技有限公司 | Battery cover plate and battery |
| CN221486726U (en) * | 2023-11-13 | 2024-08-06 | 安徽顶极新材料有限公司 | Battery with breathable pressure relief electrode lugs |
-
2023
- 2023-11-13 CN CN202311516944.XA patent/CN117638390A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115485918A (en) * | 2021-03-08 | 2022-12-16 | 株式会社Lg新能源 | Battery cell and battery cell manufacturing apparatus for manufacturing battery cell |
| CN115816949A (en) * | 2022-10-28 | 2023-03-21 | 安徽顶极新材料有限公司 | Ventilation valve and processing method thereof |
| CN116190904A (en) * | 2023-02-22 | 2023-05-30 | 安徽顶极新材料有限公司 | Breathable pressure relief tab and processing method thereof |
| CN117013163A (en) * | 2023-08-24 | 2023-11-07 | 深圳市方厚新能科技有限公司 | Battery cover plate and battery |
| CN221486726U (en) * | 2023-11-13 | 2024-08-06 | 安徽顶极新材料有限公司 | Battery with breathable pressure relief electrode lugs |
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