CN109411645A - A kind of power battery top cover with nanometer injection molding pole - Google Patents
A kind of power battery top cover with nanometer injection molding pole Download PDFInfo
- Publication number
- CN109411645A CN109411645A CN201810497890.XA CN201810497890A CN109411645A CN 109411645 A CN109411645 A CN 109411645A CN 201810497890 A CN201810497890 A CN 201810497890A CN 109411645 A CN109411645 A CN 109411645A
- Authority
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- Prior art keywords
- top cover
- battery
- pole
- lithium ion
- nanometer
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- 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
- 238000001746 injection moulding Methods 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000004033 plastic Substances 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000003792 electrolyte Substances 0.000 claims abstract description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract 4
- 239000002905 metal composite material Substances 0.000 claims abstract 3
- 239000002991 molded plastic Substances 0.000 claims abstract 3
- 239000002131 composite material Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 5
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- 229920000728 polyester Polymers 0.000 claims 2
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 229920000098 polyolefin Polymers 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 238000004146 energy storage Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 description 10
- 238000012986 modification Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 239000007769 metal material Substances 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 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
- 238000010276 construction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920006389 polyphenyl polymer Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- FYIBGDKNYYMMAG-UHFFFAOYSA-N ethane-1,2-diol;terephthalic acid Chemical compound OCCO.OC(=O)C1=CC=C(C(O)=O)C=C1 FYIBGDKNYYMMAG-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004804 winding Methods 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
-
- 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 of a single cell or a single battery
- H01M50/183—Sealing members
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention is a kind of power battery top cover that pole is molded with nanometer, provide a kind of power or energy storage lithium ion battery box top cover mainly prepared with polymerizable material, using nanometer Shooting Technique, the modified material for selecting electrolyte resistance excellent, high temperature in-mould injection is carried out with metal pole, obtains the nanometer that there is metallo-plastic to combine sealing performance by force injection-moulded plastic/metal composite structure.Top cover can carry out welding using laser welding mode and polymerizable material box body, form confined space, securely and reliably.The configuration of the present invention is simple, design space are big, can be realized the Rapid Combination of battery cap box body, and combine it is convenient, fast, can be with general on various types of electric cars or energy-storage battery.
Description
Technical field
The present invention relates to a kind of secondary power or the battery case top covers of energy storage lithium ion battery, more particularly to one kind to have entirely
Plastics add the metallo-plastic of metal pole to combine sealing composite construction by force.
Background technique
With riseing year by year for oil price and being on the rise for problem of environmental pollution, as replacing for fuel combustion type automobile
In generation, people have developed natural gas vehicle, hydrogen powered vehicle, solar telephone and electric car etc., and wherein most apply
Prospect is electric car.
Lithium battery mainly includes shell and electrolyte built in shell and using lamination or winding assembly method dress at present
Anode, battery diaphragm and the negative electrode tab matched pass through the outside output power of top cover pole.Needed between pole and top cover insulate and
It is tightly combined, is revealed to avoid electrolyte and completely cuts off vapor.Current technique, which is typically chosen, insulate metal pole with shell
It fixes and seals with sealing ring or with glue between layer.
Polymer material is preferable insulating materials, can be used as cell box shell structural member material, or as metal material
The insulating layer of battery case uses.Currently, gradually substituting metal material in research all-polymer material in the industry produces battery case.It is poly-
The combination sealing problem closed between object and metal pole is the technical problem for mainly needing to solve.
After preparing lithium battery kit using plastic casing, the metal pole of top cover can use in mould with top cover plastic cement to be infused
The mode of modeling is fixed.Although can prepare metal and integrally moulded complex in this way, what is obtained is answered
There is a problem of that binding force and air-tightness are poor between fit metal and plastic cement.Thus, all the time, people are always in research
The no method having more reasonably by high-intensitive engineering resin and metal bonding sealing.
In metal material battery case of the present invention in order to solve prior art preparation non-metallic insulation layer and metal pole with
And plastic material battery case plastics are inscribed between sealing in conjunction with metal pole.The binding force for providing a kind of metal and resin is strong, and
Simple process is easily mass produced, and the preparation method of free of contamination metal-resin composite and its metal-resin of preparation are compound
Body, the insulated enclosure for battery case.
Summary of the invention
To solve the problems, such as that above-mentioned metallo-plastic is combined and sealed, the purpose of the present invention is to provide a kind of solution is above-mentioned
The nanometer Shooting Technique and battery case top cover of problem.
Battery case top cover includes coping plate, explosion-proof valve, the first pole, the second pole and conductive sheet etc..
Technical scheme is as follows: a kind of power or energy-storage battery box and top cover, contains metal pole, box body on top cover
Built-in electrolyte.Top cover metal pole is tied with plastic top cover or casting coping non-metallic insulation layer with nanometer Shooting Technique
Close, solve the problems, such as metal and it is nonmetallic between insulated enclosure.
Using above technical scheme, the battery outlet of main power source and inductor pole for tray interior.It is infused using nanometer
After moulding technique, the combination problem of metal and plastics is not only solved, air-tightness can also be improved, one-step technology can also be reduced
Later period manufacturing process, reduces cost.
Specifically, the present invention is to provide a kind of lithium ion power cell box top covers and the nanometer for preparing top cover to be molded
Technique.Nanometer Shooting Technique includes that nanometer micropore processing is carried out to pole metal, note in polymer material modification and metal mold
Modeling.
Nanometer Shooting Technique main purpose provided by the invention is to solve to glue between metal pole and non-metallic insulation layer
It connects and air-tightness problem.
The second object of the present invention is needed for providing above-mentioned lithium ion battery box cover or box cover insulating layer for nanometer
Polymer material, metal processing and the top cover of Shooting Technique are molded preparation method.
Technical difficult points of the present invention are that lithium-ion battery electrolytes have corrosivity, and common polymer material is straight
When contacting electrolyte intensity can be lost due to the corrosion of the swelling of organic solvent or inorganic filler.Battery applying working condition requires material
Material has certain heat resistance.
It is the optional polyphenylene sulfide of principal polymeric material of the present invention, polyphenylene oxide, polysulfones, polyimides, aromatic polyamide, poly-
The preferable engineering plastic of the chemical-resistances such as ethylene glycol terephthalate, polyethylene naphthalate, polypropylene, polyethylene
Material；And blending or composite material containing this quasi polymer；It is preferred that polyphenylene sulfide, polypropylene, polyethylene terephthalate
Ester and blending or composite material containing this quasi polymer.
The polymer material has to pass through certain modification, to meet the requirement of metal plastic nanometer injection molding.
It the optional copper of metal material, aluminium, magnesium, stainless steel, titanium, iron, galvanized sheet as battery case lid pole and mutually closes
Gold.It is preferred that copper and aluminium, particularly preferred 1000 to 7000 series alloys.Metal needs will carry out nano apertureization in advance and organise
Processing.
Box cover takes nanometer injection molding in mould, and the core process of nanometer injection molding is existed through the metal that nano aperture is handled
With polymer material integrated injection molding in plastic mould, under higher temperature and pressure, plastic cement is infiltrated with metal, is bonded in
Together, achieve the purpose that adhering and sealing.
Beneficial effects of the present invention:
The present invention provides a kind of solution lithium battery plastic material battery case top cover plastics and asks in conjunction with metal pole with sealing
The nanometer injected plastics material and technique of topic are selected suitable top cover electrolyte resistance nanometer injected plastics material, are processed in a manner of in-mould injection,
The binding force of metal and resin is strong, and good airproof performance, simple process is easily mass produced, high production efficiency, and design freedom is high.
Detailed description of the invention
Fig. 1 is the universal architecture schematic diagram of the embodiment of the present invention.
It should be noted that the structural schematic diagram is the simple signal to battery cap structure, the present invention is described emphatically
Using the metal/plastic top cover composite construction that the dynamic lithium battery of special nanometer Shooting Technique and material is general.Therefore, battery knot
The various changes or modification that structure field technical staff makes this schematic construction, such equivalent forms equally fall within the present invention and are limited
Fixed range.
Wherein, 11 be metal pole；2 be plastic top cover；
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.Furthermore, it is to be understood that after having read documented content of the invention, this field skill
Art personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within limited range of the present invention.
Embodiment 1
Battery case top cover shown in Fig. 1, including top cover metal pole and plastic cement top cover, wherein plastic cement top cover material is poly-
Acrylic composite, metal pole are copper and aluminium.
Battery case top cover uses in-mould injection mode, and PP composite material is that the modification of inventor's proprietary technology obtains, and has
Standby electrolyte resistance impregnates and can nanometer injection molding.Mold temperature is that the metal pole after preheating is put into die cavity at 130 DEG C to carry out
In-mould injection, so that it may nanometer injection molding battery top cover of the invention be made.
The characteristics of battery cap has metal and polymer material binding force is strong, good seal performance.
The battery case top cover that embodiment 1 is prepared impregnates intensity in experiment in 240 hours in ternary lithium electrolyte to be protected
Holdup is 90% or more.
Leakage test is using pressure differential method helium through test, gas permeation rate 10-6cm3/sec。
Embodiment 2
Using the battery case cap structure and preparation method thereof of embodiment 1, difference is only that the material selection of battery cap
Polyphenyl thioether composite material.Polyphenyl thioether composite material is that the modification of inventor's proprietary technology obtains, and has electrolyte resistance and impregnates simultaneously
It can nanometer injection molding.
The characteristics of battery cap has metal and polymer material binding force is strong, good seal performance.
The battery case top cover that embodiment 1 is prepared impregnates intensity in experiment in 240 hours in ternary lithium electrolyte to be protected
Holdup is 98% or more.
Leakage test is using pressure differential method helium through test, gas permeation rate 10-7cm3/sec。
Embodiment 3
Using the battery case cap structure and preparation method thereof of embodiment 1, difference is only that the material selection of battery cap
Polyethylene terephthalate, wherein pet material is that the modification of inventor's proprietary technology obtains, and is had
Standby electrolyte resistance impregnates and can nanometer injection molding.
The characteristics of battery cap has metal and polymer material binding force is strong, good seal performance.
The battery case top cover that embodiment 1 is prepared impregnates intensity in experiment in 240 hours in ternary lithium electrolyte to be protected
Holdup is 92% or more.
Leakage test is using pressure differential method helium through test, gas permeation rate 10-5cm3/sec。
More than, embodiments of the present invention are illustrated.But the present invention is not limited to above embodiment.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of battery case top cover of lithium ion battery, it is characterised in that: including top cover, explosion-proof valve, the first pole, the second pole
And conductive sheet.
2. lithium ion power cell box according to claim 1, it is characterised in that: the main material of the top cover is polymerization
Object material.
3. top cover structure of power battery according to claim 1, it is characterised in that: the polymerizable material and metal pole
Nanometer injection-moulded plastic/metal composite structure that there is intercolumniation metallo-plastic to combine sealing by force.
4. lithium ion power cell box top cover according to claim 2, it is characterised in that: the polymerizable material is optional
Blending or composite material containing polyphenylene sulfide, polyimides, polyester, polyolefin, or containing this quasi polymer；It is preferred that polyphenylene sulfide
Ether, polyester, polypropylene and blending or composite material containing this quasi polymer.
5. lithium ion power cell box top cover according to claim 3, it is characterised in that: the top cover processing method master
It to be nanometer injection molding.
6. lithium ion power cell box top cover according to claim 3, it is characterised in that: the top cover polymerizable material
With the characteristic that Submillineter Wave Technology penetrates, laser welding process welding can be used with battery box.
7. lithium ion power cell box top cover according to claim 3, it is characterised in that: the nanometer injection-moulded plastic/
Metal composite structure has preferable electrolyte resistance, insulation and sealing effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497890.XA CN109411645A (en) | 2018-05-22 | 2018-05-22 | A kind of power battery top cover with nanometer injection molding pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497890.XA CN109411645A (en) | 2018-05-22 | 2018-05-22 | A kind of power battery top cover with nanometer injection molding pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109411645A true CN109411645A (en) | 2019-03-01 |
Family
ID=65464131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497890.XA Pending CN109411645A (en) | 2018-05-22 | 2018-05-22 | A kind of power battery top cover with nanometer injection molding pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109411645A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212124A (en) * | 2019-07-17 | 2019-09-06 | 池州市骏智机电科技有限公司 | A kind of battery cap and preparation method thereof based on blocky pole |
| CN110880564A (en) * | 2019-10-28 | 2020-03-13 | 宜兴市惠华复合材料有限公司 | Novel lithium battery shell and shell cover applying same |
| CN114583344A (en) * | 2022-03-11 | 2022-06-03 | 河南省鹏辉电源有限公司 | Battery cover plate and battery |
| CN116231181A (en) * | 2023-05-09 | 2023-06-06 | 宁德时代新能源科技股份有限公司 | Battery, manufacturing method of battery and electric equipment |
| CN117659700B (en) * | 2024-01-31 | 2024-04-30 | 广州辰东新材料有限公司 | Polyphenylene sulfide composite material for integrated explosion-proof device of power battery, and preparation and application thereof |
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Cited By (6)
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|---|---|---|---|---|
| CN110212124A (en) * | 2019-07-17 | 2019-09-06 | 池州市骏智机电科技有限公司 | A kind of battery cap and preparation method thereof based on blocky pole |
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| CN114583344A (en) * | 2022-03-11 | 2022-06-03 | 河南省鹏辉电源有限公司 | Battery cover plate and battery |
| CN116231181A (en) * | 2023-05-09 | 2023-06-06 | 宁德时代新能源科技股份有限公司 | Battery, manufacturing method of battery and electric equipment |
| CN116231181B (en) * | 2023-05-09 | 2023-10-20 | 宁德时代新能源科技股份有限公司 | Battery, manufacturing method of battery and electric equipment |
| CN117659700B (en) * | 2024-01-31 | 2024-04-30 | 广州辰东新材料有限公司 | Polyphenylene sulfide composite material for integrated explosion-proof device of power battery, and preparation and application thereof |
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