CN114447534A - Battery top cap and battery - Google Patents
Battery top cap and battery Download PDFInfo
- Publication number
- CN114447534A CN114447534A CN202210107048.7A CN202210107048A CN114447534A CN 114447534 A CN114447534 A CN 114447534A CN 202210107048 A CN202210107048 A CN 202210107048A CN 114447534 A CN114447534 A CN 114447534A
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- Prior art keywords
- ceramic ring
- battery
- pole
- battery top
- cover plate
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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.)
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- 239000000919 ceramic Substances 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 7
- 238000005219 brazing Methods 0.000 claims description 6
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a battery top cover and a battery, wherein the battery top cover comprises a cover plate provided with a pole, a ceramic ring is sleeved on the pole, metal layers are arranged on the upper surface, the lower surface and the peripheral surface of the ceramic ring, and the metal layers on the upper surface, the lower surface and the peripheral surface of the ceramic ring are communicated. According to the invention, the metal layer is arranged on the ceramic ring, so that the polar post is electrically connected with the shell, when the external short circuit occurs to the battery, the current is rapidly increased, and the metal layer on the periphery of the ceramic ring is rapidly melted, so that the short circuit is cut off, and the safety performance of the battery is improved.
Description
Technical Field
The invention belongs to the technical field of batteries, and relates to a battery top cover and a battery.
Background
At present, the lithium ion power battery is widely applied to the fields of computers, mobile phones and the like due to the advantages of high energy density, high power density, multiple recycling times, long storage time and the like, has a wide application prospect in electric vehicles such as electric bicycles, electric automobiles and the like and energy storage facilities along with the maturity of manufacturing technology, and can effectively solve the problems of environmental pollution, energy crisis and the like due to the wide application of the power battery.
At present, the assembly structure of the resistance block arranged between the top cover and the pole is widely used in the design of the top cover of the power battery all the time, under the common condition, the anode pole is electrically connected with the top cover plate through the resistance block, and the resistance value of the resistance block is in the milliohm level, so that the electric potentials of the aluminum shell and the anode pole are ensured, and the generation of large current is reduced.
However, this solution has at least the following drawbacks: because the positive pole is electrically connected with the top cover plate through the resistance block, when an external part and the shell cause short circuit, if the current between the poles is not cut off in time, the safety performance of the battery cell can be reduced, and even the battery cell is scrapped.
CN109786591A discloses a lithium ion battery ceramic cover plate assembly, which includes a cover plate body, a ceramic ring, and an electrode terminal, wherein the cover plate body is a stainless steel substrate, a mounting hole is formed in the stainless steel substrate, the ceramic ring is mounted on the mounting hole, the electrode terminal penetrates through the ceramic ring, the top surface of the electrode terminal is exposed out of the ceramic ring, the bottom surface of the electrode terminal is exposed out of the lower portion of the stainless steel substrate, a nickel disc is disposed between the ceramic ring and the stainless steel substrate, and the nickel disc is welded with the ceramic ring and the stainless steel substrate respectively. The invention provides a lithium ion battery ceramic cover plate component and a lithium ion battery, wherein the material of a disc in the lithium ion battery ceramic cover plate component is changed into a nickel material, and a ceramic ring and a stainless steel substrate can be firmly welded together through laser welding, so that the air leakage phenomenon cannot occur, and the sealing performance of a welded product is good. The shape of the nickel disk and the arrangement of the welding contact area with the ceramic ring can improve the welding tightness of the product.
CN102856514A discloses a cover plate assembly, which comprises a sealing cover plate and an electrode structure insulated from the sealing cover plate, wherein the electrode structure comprises a ceramic sealing member and an electrode terminal, and the sealing cover plate is used for sealing a battery case; the sealing cover plate is provided with at least one first through hole, and an electrode structure is arranged in the first through hole; the electrode terminal passes through the first through hole to lead out the current in the battery, and the ceramic sealing element is clamped between the electrode terminal and the sealing cover plate for insulation and sealing.
Therefore, how to provide a cover plate structure, which can cut off the gradual current of the stage in time and improve the safety of the battery becomes a technical problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a battery top cover and a battery, wherein a metal layer is arranged on a ceramic ring, so that an electrode post is electrically connected with a shell, when the battery is subjected to external short circuit, the current is rapidly increased, and the metal layer on the periphery of the ceramic ring is rapidly melted, so that a short circuit is cut off, and the safety performance of the battery is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a battery top cover, which comprises a cover plate provided with a pole, wherein a ceramic ring is sleeved on the pole, metal layers are arranged on the upper surface, the lower surface and the peripheral surface of the ceramic ring, and the metal layers on the upper surface, the lower surface and the peripheral surface of the ceramic ring are communicated.
According to the invention, the metal layers are arranged on the upper surface, the lower surface and the periphery of the ceramic ring, so that the pole is electrically connected with the battery top cover and further electrically connected with the shell; through controlling the sectional area of the peripheral metal layer of the ceramic ring, when the external short circuit occurs to the battery, the current is rapidly increased, and the peripheral metal layer of the ceramic ring is rapidly melted, so that a short circuit is cut off, the safety performance of the battery is improved, and the battery has the characteristics of simple structure, low cost, strong applicability and the like.
In a preferred embodiment of the present invention, the metal layer is closed or not closed on an outer circumferential surface of the ceramic ring.
It should be noted that, in the present invention, the metal layer is closed or not closed, that is, the metal layer is disposed on at least a part of the surface of the outer peripheral surface of the ceramic ring, so as to communicate the metal layers on the upper and lower surfaces, thereby ensuring the electrical connection between the terminal post and the top cover of the battery.
As a preferable technical scheme of the invention, the cross-sectional area of the metal layer on the cross section of the ceramic ring is 2-20 mm and is positioned on the outer peripheral surface of the ceramic ring2For example, 2mm2、4mm2、6mm2、8mm2、10mm2、12mm2、14mm2、16mm2、18mm2Or 20mm2。
As a preferable technical solution of the present invention, at least one first protrusion is disposed on a side of the ceramic ring contacting the cover plate, a first concave is disposed on a position of the cover plate corresponding to the first protrusion, and the first protrusion and the first concave are engaged with each other.
As a preferred technical scheme of the invention, the longitudinal section of the pole is T-shaped, the T-shaped pole is divided into a horizontal section and a vertical section, and the vertical section is sleeved with the ceramic ring.
Preferably, the ceramic ring is provided with at least one second protrusion on the contact surface with the transverse section of the T-shaped pole, the transverse section is provided with a second pit at a position corresponding to the second protrusion, and the second protrusion and the second pit are mutually embedded.
According to the invention, the ceramic ring is provided with the bulge, the cover plate and the pole are provided with the pits, and the anti-rotation performance of the pole is enhanced through the matching and embedding of the bulge and the pits.
As a preferable technical scheme of the invention, the ceramic ring is connected with the pole through brazing.
Preferably, the ceramic ring is brazed to the cover plate.
As a preferable technical solution of the present invention, a sealing ring is disposed at a position where the pole contacts the cover plate.
Preferably, the sealing ring is of a step structure, and the sealing ring isolates the pole and the cover plate.
According to the invention, the sealing ring with the step structure is arranged, so that the pole column is sealed, and the pole column and the cover plate are isolated through the step structure, so that the pole column and the cover plate are insulated.
Preferably, the battery top cover further comprises a lower plastic, and the lower plastic is located on the surface of one side, away from the ceramic ring, of the cover plate.
Preferably, utmost point post still includes the welding piece of seting up the through-hole, utmost point post passes the apron in proper order and inserts the through-hole in-connection of welding piece with lower plastic.
In a preferred embodiment of the present invention, the ceramic ring has any one of a cylindrical shape, a cubic shape, and an elliptical shape.
Preferably, an explosion-proof valve is arranged on the cover plate.
As a preferred technical solution of the present invention, the pole includes a positive pole and a negative pole.
Preferably, the cover plate is provided with a positive mounting hole and a negative mounting hole respectively, and the positive pole and the negative pole are mounted in the positive mounting hole and the negative mounting hole respectively.
Preferably, the negative pole is a copper-aluminum composite pole.
The negative pole column is a copper-aluminum composite pole column, copper and aluminum are welded together through brazing, friction welding or explosion composite welding to obtain the negative pole column, the upper half part of the negative pole column is aluminum alloy, and the lower half part of the negative pole column is a copper simple substance.
Illustratively, there is provided an assembling method of the battery top cap, the assembling method comprising the steps of:
and sleeving the pole into the ceramic ring, installing the pole into the installation hole of the cover plate, attaching lower plastic after installing the sealing ring, welding and fixing the pole and the welding block, and assembling to obtain the battery top cover.
In a second aspect, the present invention provides a battery, where the battery includes a casing, a battery core, and a battery top cover, and the battery top cover adopts the battery top cover of the first aspect.
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the metal layers are arranged on the upper surface, the lower surface and the periphery of the ceramic ring, so that the pole is electrically connected with the top cover of the battery and further electrically connected with the shell; through controlling the sectional area of the peripheral metal layer of the ceramic ring, when the external short circuit occurs to the battery, the current is rapidly increased, and the peripheral metal layer of the ceramic ring is rapidly melted, so that a short circuit is cut off, the safety performance of the battery is improved, and the battery has the characteristics of simple structure, low cost, strong applicability and the like.
Drawings
Fig. 1 is a schematic view of a disassembled structure of a battery top cover according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a ceramic ring provided in one embodiment of the present invention;
FIG. 3 is a side expanded view of a metal layer provided in one embodiment of the present invention;
FIG. 4 is a schematic structural view of another ceramic ring provided in an embodiment of the present invention;
fig. 5 is a schematic structural view of a battery provided in an embodiment of the present invention.
Wherein, 1, a positive pole column; 2-a positive ceramic ring; 3-cover plate; 4-sealing ring; 5-discharging plastic; 6-positive electrode welding block; 7-a negative pole post; 8-an explosion-proof valve; 9-a negative ceramic ring; 10-a negative electrode welding block; 11-a metal layer; 12-a battery top cover; 13-a housing; 14-blank portion.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments.
In a specific embodiment of the present invention, the present invention provides a battery top cover, as shown in fig. 1, the battery top cover includes a cover plate 3 provided with a post, a ceramic ring is sleeved on the post, as shown in fig. 2, metal layers 11 are respectively provided on an upper surface, a lower surface and an outer circumferential surface of the ceramic ring, and the metal layers 11 on the upper surface, the lower surface and the outer circumferential surface of the ceramic ring are communicated with each other.
According to the invention, the metal layers 11 are arranged on the upper surface, the lower surface and the periphery of the ceramic ring, so that the pole is electrically connected with the top cover of the battery and further electrically connected with the shell; through controlling the sectional area of the peripheral metal layer 11 of the ceramic ring, when the external short circuit occurs to the battery, the current is rapidly increased, and the peripheral metal layer 11 of the ceramic ring is rapidly melted, so that a short circuit is cut off, the safety performance of the battery is improved, and the battery has the characteristics of simple structure, low cost, strong applicability and the like.
Specifically, the cover plate 3 is provided with a positive mounting hole and a negative mounting hole respectively, and the positive pole column 1 and the negative pole column 7 are mounted in the positive mounting hole and the negative mounting hole respectively. The positive pole column 1 is provided with a positive ceramic ring 2, and the negative pole column 7 is provided with a negative ceramic ring 9.
Specifically, on the outer circumferential surface of the ceramic ring, the metal layer 11 is closed or not closed, and as shown in fig. 3, the side surface of the ceramic ring is spread out, wherein the blank portion 14, i.e., the position where the metal layer 11 is not provided, the cross-sectional area of the metal layer 11 is controlled by adjusting the area of the blank portion 14. Optionally, the ceramic ring has an outer shape of any one of a cylinder, a cube (as shown in fig. 4), or an ellipse.
In particular, on the outer peripheral surface of the ceramic ring, the metal layer 11 is present on the cross section of the ceramic ringThe cross-sectional area is 2-20 mm2。
Specifically, at least one first protrusion is arranged on one side of the ceramic ring, which is in contact with the cover plate 3, a first concave pit is arranged on the cover plate 3, which corresponds to the first protrusion, the first protrusion and the first concave pit are embedded with each other, and as shown in fig. 3, a convex part on the side in the figure is a first protrusion corresponding to the surface of the ceramic column.
Specifically, the longitudinal section of utmost point post is T shape, is T shape utmost point post divide into horizontal segment and vertical section, the pottery encircles the cover and is located on the vertical section. Furthermore, the ceramic ring and the transverse section contact surface of the T-shaped pole are provided with at least one second protrusion, the transverse section is provided with a second pit at a position corresponding to the second protrusion, and the second protrusion and the second pit are mutually embedded.
According to the invention, the ceramic ring is provided with the bulge, the cover plate 3 and the pole are provided with the pits, and the anti-rotation performance of the pole is enhanced through the matching and embedding of the bulge and the pits.
Specifically, the ceramic ring is connected with the pole through brazing. The ceramic ring is connected with the cover plate 3 by brazing.
Specifically, a sealing ring 4 is arranged at the position where the pole contacts the cover plate 3. Further, sealing washer 4 is the stair structure, isolated utmost point post of sealing washer 4 and apron 3. According to the invention, the sealing ring 4 with the step structure is arranged, so that not only is the pole sealed, but also the pole and the cover plate 3 are isolated through the step structure, and the pole and the cover plate 3 are insulated.
Specifically, the battery top cover further comprises a lower plastic 5, and the lower plastic 5 is located on one side surface of the cover plate 3 away from the ceramic ring.
Specifically, utmost point post is still including the welding piece of seting up the through-hole, utmost point post passes apron 3 and lower plastic 5 in proper order and inserts the through-hole internal connection of welding piece. The positive pole column 1 is provided with a positive pole welding block 6, and the negative pole column 7 is provided with a negative pole welding block 10.
In particular, the cover plate 3 is provided with an explosion-proof valve 8, optionally the explosion-proof valve 8 is in the form of an explosion-proof sheet.
Specifically, the negative pole 7 is a copper-aluminum composite pole, the copper-aluminum composite pole is prepared by brazing, friction welding or explosion composite welding copper and aluminum, the upper half part of the negative pole 7 is aluminum alloy, and the lower half part of the negative pole is a copper simple substance.
Illustratively, there is provided an assembling method of the battery top cap, the assembling method comprising the steps of:
and sleeving the pole into the ceramic ring, installing the pole into the installation hole of the cover plate, attaching lower plastic after installing the sealing ring, welding and fixing the pole and the welding block, and assembling to obtain the battery top cover.
The invention also provides a battery, as shown in fig. 5, the battery comprises a housing 13, a battery cell and a battery top cover 12, the battery top cover 12 is the battery top cover 12 of the first aspect, and the top cover is provided with a positive post 1 and a negative post 7.
According to the invention, the metal layers 11 are arranged on the upper surface, the lower surface and the periphery of the ceramic ring, so that the pole is electrically connected with the top cover of the battery and further electrically connected with the shell 13; through controlling the sectional area of the peripheral metal layer 11 of the ceramic ring, when the external short circuit occurs to the battery, the current is rapidly increased, and the peripheral metal layer 11 of the ceramic ring is rapidly melted, so that a short circuit is cut off, the safety performance of the battery is improved, and the battery has the characteristics of simple structure, low cost, strong applicability and the like.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The utility model provides a battery top cap, its characterized in that, battery top cap is including the apron that is provided with utmost point post, the cover is equipped with ceramic ring on the utmost point post, ceramic ring's upper surface, lower surface and outer peripheral face all are provided with the metal level, the metal level intercommunication on ceramic ring's upper surface, lower surface and the outer peripheral face.
2. The battery top cap of claim 1, wherein the metal layer is closed or non-closed on an outer circumferential surface of the ceramic ring.
3. The battery top cap according to claim 1, wherein the metal layer has a cross-sectional area of 2-20 mm in a cross-sectional area of the ceramic ring on an outer circumferential surface of the ceramic ring2。
4. The battery top cap of claim 1, wherein the ceramic ring is provided with at least one first protrusion on a side contacting the cover plate, the cover plate is provided with a first recess corresponding to the first protrusion, and the first protrusion and the first recess are engaged with each other.
5. The battery top cap according to claim 1, wherein the longitudinal section of the pole is T-shaped, the T-shaped pole is divided into a horizontal section and a vertical section, and the vertical section is sleeved with the ceramic ring;
preferably, the ceramic ring is provided with at least one second protrusion on the contact surface with the transverse section of the T-shaped pole, the transverse section is provided with a second pit at a position corresponding to the second protrusion, and the second protrusion and the second pit are mutually embedded.
6. The battery top cap of claim 1, wherein the ceramic ring is connected to the post by brazing;
preferably, the ceramic ring is brazed to the cover plate.
7. The battery top cover according to claim 1, wherein a sealing ring is arranged at the contact position of the pole and the cover plate;
preferably, the sealing ring is of a step structure, and the sealing ring isolates the pole and the cover plate;
preferably, the battery top cover further comprises a lower plastic, and the lower plastic is located on the surface of one side, away from the ceramic ring, of the cover plate;
preferably, utmost point post is still including offering the welding piece of through-hole, utmost point post passes the apron in proper order and inserts the through-hole in-connection of welding piece with lower plastic.
8. The battery top cap of claim 1, wherein the ceramic ring has an outer shape that is any one of cylindrical, cubic, or elliptical;
preferably, an explosion-proof valve is arranged on the cover plate.
9. The battery top cap of claim 1, wherein the post comprises a positive post and a negative post;
preferably, the cover plate is respectively provided with a positive pole mounting hole and a negative pole mounting hole, and the positive pole column and the negative pole column are respectively mounted in the positive pole mounting hole and the negative pole mounting hole;
preferably, the negative pole is a copper-aluminum composite pole.
10. A battery, comprising a housing, a core, and a battery top cover, wherein the battery top cover is the battery top cover of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107048.7A CN114447534A (en) | 2022-01-28 | 2022-01-28 | Battery top cap and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107048.7A CN114447534A (en) | 2022-01-28 | 2022-01-28 | Battery top cap and battery |
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| Publication Number | Publication Date |
|---|---|
| CN114447534A true CN114447534A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210107048.7A Pending CN114447534A (en) | 2022-01-28 | 2022-01-28 | Battery top cap and battery |
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| Country | Link |
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| CN (1) | CN114447534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115513579A (en) * | 2022-10-21 | 2022-12-23 | 武汉中金泰富新能源科技有限公司 | Power battery cover plate and power battery |
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|---|---|---|---|---|
| CN115513579A (en) * | 2022-10-21 | 2022-12-23 | 武汉中金泰富新能源科技有限公司 | Power battery cover plate and power battery |
| CN115513579B (en) * | 2022-10-21 | 2023-12-01 | 武汉中金泰富新能源科技有限公司 | Power battery cover plate and power battery |
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