CN113488730A - Square aluminum shell lithium ion battery and battery cover plate thereof - Google Patents
Square aluminum shell lithium ion battery and battery cover plate thereof Download PDFInfo
- Publication number
- CN113488730A CN113488730A CN202110711072.7A CN202110711072A CN113488730A CN 113488730 A CN113488730 A CN 113488730A CN 202110711072 A CN202110711072 A CN 202110711072A CN 113488730 A CN113488730 A CN 113488730A
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- China
- Prior art keywords
- explosion
- cover plate
- base plate
- battery cover
- 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.)
- Pending
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- 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
- H01M50/342—Non-re-sealable arrangements
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
- H01M50/645—Plugs
-
- 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)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a battery cover plate, wherein a positive rivet sequentially penetrates through a sealing ring, a stop frame, a base plate, a positive rotation stop sheet and a positive pressure plate to be riveted, a negative rivet sequentially penetrates through the sealing ring, the stop frame, the base plate, a negative rotation stop sheet and a negative pressure plate to be riveted, the center of the base plate is provided with an explosion-proof hole, the explosion-proof hole is internally provided with an explosion-proof sheet, the top of the explosion-proof hole is provided with an explosion-proof valve dustproof paste, the base plate is internally provided with a liquid injection hole, the liquid injection hole is internally provided with a sealing nail and a sealing sheet in a sealing manner, two ends of the base plate are also provided with cylindrical positioning grooves, and the lower surfaces of the positive rotation stop sheet and the negative rotation stop sheet are provided with positioning columns which are connected with the positioning grooves in a nested manner, so that the overall safety and stability of a square aluminum shell lithium ion battery can be guaranteed. The invention also discloses a square aluminum shell lithium ion battery comprising the battery cover plate.
Description
Technical Field
The invention relates to the technical field of new energy battery manufacturing, in particular to a battery cover plate. The invention also relates to a square aluminum shell lithium ion battery comprising the battery cover plate.
Background
With the guidance and promotion of new energy field policies at home and abroad, the technical innovation of lithium ion batteries in the directions of energy storage, communication, power and the like is rapidly developed, the related technical research of square aluminum shell lithium ion batteries, which is one of mainstream application product types, is gradually deepened, the industrialization of the lithium ion batteries is rapidly promoted, the requirements of application client sides of the lithium ion batteries are higher and higher, the technical research of battery cover plates serving as important components of the square aluminum shell lithium ion batteries is concerned more and more, and the technical requirements on the design of the battery cover plates are stricter. In order to improve the stability of the battery cover plate structure and the overall safety and stability of the square aluminum-shell lithium ion battery, the structure of the battery cover plate must be improved.
In conclusion, how to solve the problem of stability of the battery cover plate structure in the prior art and ensure the overall safety and stability of the square aluminum-shell lithium ion battery is a problem which needs to be solved urgently by technical personnel in the field at present.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a battery cover plate, which solves the problem of stability of a battery cover plate structure in the prior art and ensures the overall safety and stability of a square aluminum-shell lithium ion battery. Another object of the present invention is to provide a prismatic aluminum-shell lithium ion battery including the above battery cover plate.
In order to solve the above technical problems, the present invention provides a battery cover plate, which comprises a positive rivet, a negative rivet, a sealing ring, a stop frame, a base plate, a positive rotation stop piece, a negative rotation stop piece, a positive pressure plate and a negative pressure plate, it is characterized in that the positive rivet sequentially penetrates through the sealing ring, the stop frame, the base plate, the positive stop rotating piece and the positive pressure plate to be riveted, the negative rivet penetrates through the sealing ring, the stop frame, the base plate, the negative stop rotating piece and the negative pressing plate in sequence to be riveted, an explosion-proof hole is formed in the center of the base plate, an explosion-proof sheet is arranged in the explosion-proof hole, an explosion-proof valve dustproof sticker is arranged at the top of the explosion-proof hole, a liquid injection hole is formed in the base plate, a sealing nail and a sealing sheet are hermetically arranged in the liquid injection hole, two ends of the base plate are also provided with cylindrical positioning grooves, and positioning columns are arranged on the lower surfaces of the positive pole rotation stopping sheet and the negative pole rotation stopping sheet and are connected with the positioning grooves in a nested manner.
Preferably, the positive electrode rotation stopping sheet is made of a weak conductive material.
Preferably, the negative electrode rotation stopping sheet is made of insulating plastic.
Preferably, the explosion-proof valve is pasted with regular hollow scratches in a dustproof manner.
Preferably, an insulating film is attached to the upper surface of the substrate.
The invention also provides a square aluminum shell lithium ion battery which comprises a battery aluminum shell, a battery cover plate and a battery core, wherein the battery cover plate is the battery cover plate as described in any one of the above.
Preferably, the structure of the battery cell is a laminated structure and/or a wound structure.
The battery cover plate provided by the invention adopts a laser welding mode when being connected with the battery aluminum shell, so that the possibility of the internal resistance change of the battery cover plate can be effectively reduced, and the overall performance of the lithium ion battery can be effectively improved. The two ends of the base plate are also provided with cylindrical positioning grooves, the lower surfaces of the positive pole rotation stopping piece and the negative pole rotation stopping piece are provided with positioning columns and the positioning grooves are connected in a nested mode, the positive pole rotation stopping piece and the negative pole rotation stopping piece are guaranteed to be more stable and firm, the base plate, the positive pole rotation stopping piece and the positive pole pressing plate are matched with a positive pole rivet to sequentially penetrate through the sealing ring, the stopping frame, the base plate, the positive pole rotation stopping piece and the negative pole pressing plate, the sealing ring, the stopping frame, the base plate, the negative pole rotation stopping piece and the negative pole pressing plate are sequentially penetrated through the riveted structure from bottom to top, and the structural stability of the battery cover plate when the battery cover plate is externally connected can be guaranteed. In the process of charging and discharging reaction of the lithium ion battery, when the inside of the battery is critical to a certain air pressure, the explosion-proof piece arranged in the explosion-proof hole can be opened, and the explosion-proof valve dustproof sticker with regular hollowed scratches is arranged at the top of the explosion-proof hole, so that the limit value of the exhaust pressure of the battery can be effectively controlled, and the overall safety and stability of the lithium ion battery are guaranteed. Meanwhile, the design that the positive electrode rotation stopping sheet is made of a weak conductive material and the negative electrode rotation stopping sheet is made of an insulating plastic material can enable the positive electrode to be communicated with the battery aluminum shell without changing the structural shape of the original battery cover plate, so that the battery aluminum shell is provided with positive potential, and the battery aluminum shell is not easy to oxidize and corrode.
The invention also provides a square aluminum shell lithium ion battery comprising the battery cover plate, and the square aluminum shell lithium ion battery has the technical effects due to the technical effects of the battery cover plate, and the square aluminum shell lithium ion battery is not described in detail herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a battery cover plate structure disclosed in the embodiment of the present application.
In the figure, 1, a base plate, 2, a stop frame, 3, a positive pressure plate, 4, a positive rotation stop sheet, 5, a positioning column, 6, a positioning groove, 7, a sealing ring, 8, a positive rivet, 9, a negative pressure plate, 10, a negative rotation stop sheet, 11, a negative rivet, 12, an explosion-proof valve dustproof paste, 13, an explosion-proof hole, 14, an explosion-proof sheet, 15, a sealing sheet, 16, a sealing nail and 17, a liquid injection hole are arranged.
Detailed Description
In order to further understand the technical content, features and effects of the present invention, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a schematic diagram of a battery cover plate structure disclosed in the embodiment of the present application.
As shown in figure 1, the battery cover plate comprises a positive rivet (8), a negative rivet (11), a sealing ring (7), a stop frame (2), a base plate (1), a positive stop piece (4), a negative stop piece (10), a positive pressure plate (3) and a negative pressure plate (9), wherein the positive rivet (8) sequentially penetrates through the sealing ring (7), the stop frame (2), the base plate (1), the positive stop piece (4) and the positive pressure plate (3) to be riveted, the negative rivet (11) sequentially penetrates through the sealing ring (7), the stop frame (2), the base plate (1), the negative stop piece (10) and the negative pressure plate (9) to be riveted, an explosion-proof hole (13) is formed in the center of the base plate (1), an explosion-proof piece (14) is installed in the explosion-proof hole (13), a dustproof sticker (12) for an explosion-proof valve is installed at the top of the explosion-proof hole (13), a liquid injection hole (17) is formed in the base plate (1), and a sealing nail (16) and a sealing sheet (15) are installed in the liquid injection hole (17) in a sealing way, cylindrical positioning grooves (6) are further formed in two ends of the base plate (1), and positioning columns (5) are arranged on the lower surfaces of the positive rotating-stop sheet (4) and the negative rotating-stop sheet (10) and are connected with the positioning grooves (6) in an embedded mode. The explosion-proof valve dustproof paste (12) is provided with regular hollow scratches. An insulating film is attached to the upper surface of the substrate (1).
The battery cover plate adopts a laser welding mode when being connected with the battery aluminum shell, so that the possibility of the change of the internal resistance of the battery cover plate can be effectively reduced, and the overall performance of the lithium ion battery can be effectively improved. The two ends of the base plate (1) are further provided with cylindrical positioning grooves (6), the lower surfaces of the positive pole rotation stopping piece (4) and the negative pole rotation stopping piece (10) are provided with positioning columns (5) which are connected with the positioning grooves (6) in an embedded mode, the positive pole rotation stopping piece (4) and the negative pole rotation stopping piece (10) are guaranteed to be more stable and firm, and the base plate is matched with a structure that a positive pole rivet (8) penetrates through a sealing ring (7), a stop frame (2), the base plate (1), a negative pole rotation stopping piece (10) and a negative pole pressing plate (9) in a riveted mode and penetrates through the sealing ring (7), the stop frame (2), the base plate (1), the negative pole rotation stopping piece (10) and the negative pole pressing plate (9) in a riveted mode from bottom to top. In the process of charge and discharge reaction of the lithium ion battery, when the inside of the battery is critical to a certain air pressure, the explosion-proof sheet (14) arranged in the explosion-proof hole (13) can be opened, and the explosion-proof valve dustproof sticker (12) with regular hollow scratches is arranged at the top of the explosion-proof hole (13) to effectively control the limit value of the exhaust pressure of the battery, so that the overall safety and stability of the lithium ion battery are guaranteed. Meanwhile, the design that the positive electrode rotation stopping sheet (4) is made of a weak conductive material and the negative electrode rotation stopping sheet (10) is made of an insulating plastic material can enable the positive electrode to be communicated with the battery aluminum shell while the structure and the appearance of the original battery cover plate structure are not changed, so that the battery aluminum shell is charged with positive potential, and the battery aluminum shell is not easy to oxidize and corrode.
For the introduction of the square aluminum-shell lithium ion battery provided by the present invention, reference is made to the above-mentioned embodiment of the battery cover plate, and the description of the present invention is omitted here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A battery cover plate comprises an anode rivet, a cathode rivet, a sealing ring, a stop frame, a base plate, an anode rotation stop sheet, a cathode rotation stop sheet, an anode pressing plate and a cathode pressing plate, it is characterized in that the positive rivet sequentially penetrates through the sealing ring, the stop frame, the base plate, the positive stop rotating piece and the positive pressure plate to be riveted, the negative rivet penetrates through the sealing ring, the stop frame, the base plate, the negative stop rotating piece and the negative pressing plate in sequence to be riveted, an explosion-proof hole is formed in the center of the base plate, an explosion-proof sheet is arranged in the explosion-proof hole, an explosion-proof valve dustproof sticker is arranged at the top of the explosion-proof hole, a liquid injection hole is formed in the base plate, a sealing nail and a sealing sheet are hermetically arranged in the liquid injection hole, two ends of the base plate are also provided with cylindrical positioning grooves, and positioning columns are arranged on the lower surfaces of the positive pole rotation stopping sheet and the negative pole rotation stopping sheet and are connected with the positioning grooves in a nested manner.
2. The battery cover plate of claim 1, wherein the positive rotation stopper is made of a weakly conductive material.
3. The battery cover plate according to claim 1, wherein the negative rotation stopper is made of an insulating plastic material.
4. The battery cover plate according to claim 1, wherein the explosion-proof valve is pasted with regular hollowed-out scratches.
5. The battery cover plate according to claim 1, wherein an insulating film is attached to the upper surface of the base plate.
6. A square aluminum shell lithium ion battery, which comprises a battery aluminum shell, a battery cover plate and a battery core, wherein the battery cover plate is the battery cover plate as claimed in any one of claims 1 to 5.
7. The square aluminum-shell lithium ion battery of claim 6, wherein the structure of the cells is a laminated structure and/or a wound structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110711072.7A CN113488730A (en) | 2021-06-25 | 2021-06-25 | Square aluminum shell lithium ion battery and battery cover plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110711072.7A CN113488730A (en) | 2021-06-25 | 2021-06-25 | Square aluminum shell lithium ion battery and battery cover plate thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113488730A true CN113488730A (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110711072.7A Pending CN113488730A (en) | 2021-06-25 | 2021-06-25 | Square aluminum shell lithium ion battery and battery cover plate thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113488730A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115863863A (en) * | 2023-02-09 | 2023-03-28 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116014317A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
-
2021
- 2021-06-25 CN CN202110711072.7A patent/CN113488730A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115863863A (en) * | 2023-02-09 | 2023-03-28 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116014317A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
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