CN216250923U - Battery top cap and battery - Google Patents
Battery top cap and battery Download PDFInfo
- Publication number
- CN216250923U CN216250923U CN202122265411.1U CN202122265411U CN216250923U CN 216250923 U CN216250923 U CN 216250923U CN 202122265411 U CN202122265411 U CN 202122265411U CN 216250923 U CN216250923 U CN 216250923U
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- Prior art keywords
- end plate
- battery
- hole
- post
- top cap
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 62
- 238000003466 welding Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a battery top cover and a battery, wherein the battery top cover comprises a top cover body, an end plate assembly and a battery pole column, one end of a first pole column is connected with a first end plate, the other end of the first pole column penetrates through a first through hole and is connected with a second end plate, the first end plate comprises a plate body and a metal layer arranged on one side of the plate body, the metal layer is arranged on one side, close to the top cover body, of the plate body, the metal layer and the first pole column are both made of first metal, the plate body is made of second metal, and the first pole column and the metal layer are welded. First end plate is metal clad sheet, because the metal level covers in the side of the board body, has stronger joint strength between metal level and the board body, and every department that the board body is close to top cap body side all covers has first metal, can reduce the welding degree of difficulty between metal level and the first utmost point post like this, guarantees the welding quality between first end plate and the first utmost point post, avoids appearing welding defect.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a battery top cover and a battery comprising the battery top cover.
Background
The lithium ion has the advantages of large specific capacity, high working voltage, high charging speed, wide working temperature range, long cycle life, small volume, light weight and the like, and is widely applied to the field of automobiles. The overall performance of the electric automobile is directly influenced by the quality of the performance of the vehicle-mounted power battery. The battery top cap is the important component part of battery electricity core, needs integrated water conservancy diversion, blast proof, heavy current protection, sealed, annotate multinomial function module such as liquid on the battery top cap, and the structure is complicated, and technical requirement is higher, and the material of battery end plate among the prior art is different with utmost point post, can improve the welding degree of difficulty between the two like this, influences the welding quality of utmost point post and battery end plate easily to influence the electric conductive property of battery.
SUMMERY OF THE UTILITY MODEL
One object of an embodiment of the present invention is to: the battery top cover has the advantages that the welding quality between the battery pole and the battery end plate is good, and the yield is high.
Another object of an embodiment of the present invention is to: a battery having good quality is provided.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the first aspect provides a battery top cover, including top cover body, end plate subassembly and battery utmost point post, be provided with first through-hole on the top cover body, battery utmost point post runs through first through-hole, the end plate subassembly includes first end plate and second end plate, battery utmost point post includes first utmost point post, the one end of first utmost point post with first end plate is connected, the other end of first utmost point post runs through first through-hole with the second end plate is connected, first end plate includes the board body and sets up the metal level of board body one side, the metal level sets up the board body is close to one side of top cover body, the metal level with the material of first utmost point post is first metal, the material of board body is the second metal, first utmost point post with the metal level welding.
As a preferred scheme of battery top cap, battery utmost point post includes second utmost point post, the end plate subassembly includes third end plate and fourth end plate, be provided with the second through-hole on the third end plate, the one end of second utmost point post is inserted the second through-hole with the third end plate is connected, the other end of second utmost point post runs through first through-hole with fourth end plate connects, the second utmost point post with the material of third end plate does the second metal, the third end plate has relative first side and second side, first side is located the second side is close to one side of top cap body, the second utmost point post with first side welding.
As a preferred scheme of battery top cap, battery utmost point post includes second utmost point post, the end plate subassembly includes third end plate and fourth end plate, be provided with the second through-hole on the third end plate, the one end of second utmost point post is inserted the second through-hole with the third end plate is connected, the other end of second utmost point post runs through first through-hole with fourth end plate connects, the second utmost point post with the material of third end plate does the second metal, the third end plate has relative first side and second side, first side is located the second side is close to one side of top cap body, the second utmost point post with the welding of second side.
As a preferable scheme of the battery top cap, the first pole is a negative pole, the first metal is copper, and the second metal is aluminum.
As a preferable scheme of the battery top cover, a third through hole is formed in the first end plate, an installation groove is formed in the metal layer, the third through hole penetrates through the installation groove, a first step surface is arranged on the periphery of the first pole, and the first step surface is abutted to the groove bottom of the installation groove; or the like, or, alternatively,
the metal layer is provided with an installation groove, and the first pole column is inserted into the installation groove.
As a preferable mode of the battery top cover, a second step surface is arranged on the periphery of the first pole, a boss protruding out of the periphery of the first pole is formed between the first step surface and the second step surface, and the boss is inserted into the mounting groove.
As a preferable mode of the battery top cover, a distance between the first step surface and the second step surface is equal to a depth of the mounting groove.
As a preferable scheme of the battery top cover, a third through hole is formed in the first end plate, the aperture of one end, close to the top cover body, of the third through hole is smaller than the aperture of one end, far away from the top cover body, of the third through hole, and the first pole is riveted with the first end plate; and/or the presence of a gas in the gas,
the second end plate is provided with a fourth through hole, the diameter of the fourth through hole close to one end of the top cover body is smaller than that of the fourth through hole far away from one end of the top cover body, and the first pole column is riveted with the second end plate.
As a preferable mode of the battery top cap, an insulating member is provided between the first end plate and/or the second end plate and the top cap body.
In a second aspect, a battery is provided, which includes the above battery top cap, and a battery post of the battery top cap is electrically connected to a battery cell inside the battery.
The utility model has the beneficial effects that: first metal and second metal form first end plate jointly, and first end plate is metal composite board promptly, because the metal level covers in this side of body of board, can understand, has stronger joint strength between metal level and the board body, and every department that this body of board is close to top cap body side all covers has first metal, can reduce the welding degree of difficulty between metal level and the first utmost point post like this, guarantees the welding quality between first end plate and the first utmost point post, avoids appearing welding defect.
Drawings
The utility model is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic diagram of a top cover of a battery according to an embodiment of the utility model.
Fig. 2 is a schematic partial sectional view of a battery top cover according to an embodiment of the utility model (negative electrode).
Fig. 3 is a schematic partial cross-sectional view of a battery top cover according to an embodiment of the utility model (positive electrode).
Fig. 4 is a schematic cross-sectional view of the first electrode according to the embodiment of the utility model.
Fig. 5 is a schematic cross-sectional view of the first end plate according to the embodiment of the utility model.
In the figure:
1. a first end plate; 101. a metal layer; 102. mounting grooves; 103. a third through hole; 104. a plate body; 105. A groove; 2. a second end plate; 3. a third end plate; 301. a first side surface; 302. a second side surface; 4. a fourth end plate; 6. a first pole column; 601. a first step surface; 602. a second step surface; 603. a boss; 7. a second pole; 8. a seal member; 9. an insulating member; 10. a positioning member; 11. an explosion-proof valve; 12. a top cover body; 1201. A liquid injection hole; 1202. a first via.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the battery top cap and the battery provided by the utility model comprise a battery top cap, the battery top cap comprises a top cap body 12, an end plate assembly and a battery post, the battery post is electrically connected with a battery core inside the battery, referring to fig. 2, the top cap body 12 is provided with a first through hole 1202, the battery post penetrates through the first through hole 1202, the end plate assembly comprises a first end plate 1 and a second end plate 2, the first end plate 1 is provided with a third through hole 103, the battery post comprises a first post 6, one end of the first post 6 is inserted into the third through hole 103 and connected with the first end plate 1, the other end of the first post 6 penetrates through the first through hole 1202 and connected with the second end plate 2, referring to fig. 5, the first end plate 1 comprises a plate body 104 and a metal layer 101 arranged on one side of the plate body 104, the metal layer 101 is arranged on one side of the plate body 104 close to the top cap body 12, the metal layer 101 and the first post 6 are both made of a first metal, the plate body 104 is made of a second metal, and the first pole 6 is welded to the metal layer 101. The first metal and the second metal jointly form the first end plate 1, namely the first end plate 1 is a metal composite plate, and the metal layer 101 covers one side surface of the plate body 104, so that it can be understood that the metal layer 101 and the plate body 104 have stronger connection strength, and each part of the plate body 104, which is close to one side surface of the top cover body 12, is covered with the first metal, so that the welding difficulty between the metal layer 101 and the first pole 6 can be reduced, the welding quality between the first end plate 1 and the first pole 6 is ensured, and the welding defect is avoided; during the equipment, can pass the one end of first utmost point post 6 earlier and be connected with first end plate 1 and carry out the pre-fixing with third through-hole 103, then weld the metal level 101 of first utmost point post 6 and first end plate 1 in order to reduce the resistance between first utmost point post 6 and the first end plate 1, the one end of keeping away from first end plate 1 with first utmost point post 6 at last again runs through top cap body 12 and is connected with second end plate 2, not only can reduce the welding degree of difficulty between first utmost point post 6 and the first end plate 1 like this, improve the yield of battery top cap in the equipment link, can also improve the welding seam quality of first utmost point post 6 and first end plate 1, thereby improve the quality of battery.
Specifically, first utmost point post 6 is the negative pole post, and first metal is copper, and the second metal is aluminium, and in this embodiment, first end plate 1 is copper aluminium composite sheet, and the material of second end plate 2 is copper, and second end plate 2 sets up in the one side that top cap body 12 is close to electric core. The copper-aluminum composite plate is a novel plate which is formed by welding a copper plate and an aluminum plate together in a cold rolling, hot rolling, explosive cladding method, explosive rolling method and other modes. The manufacturing process of the copper-aluminum composite plate is mature, the production difficulty is low, the first end plate 1 is manufactured by using the copper-aluminum composite plate, and the welding difficulty between the first end plate 1 and the first pole 6 can be reduced.
Referring to fig. 3, specifically, the battery post includes a second post 7, the end plate assembly includes a third end plate 3 and a fourth end plate 4, a second through hole is formed in the third end plate 3, one end of the second post 7 is inserted into the second through hole and connected with the third end plate 3, the other end of the second post 7 passes through the first through hole 1202 and is connected with the fourth end plate 4, the fourth end plate 4 is disposed on one side of the top cover body 12 close to the battery cell, the second post 7 and the third end plate 3 are both made of a second metal, the third end plate 3 has a first side 201 and a second side 302 opposite to each other, the first side 201 is located on one side of the second side 302 close to the top cover body 12, in one embodiment, one end of the second post 7 passes through the second through hole and is connected with the third end plate 3, then the first side 201 of the second post 7 and the third end plate 3 are welded, finally, one end of the second post 7 far from the third end plate 3 passes through the first through hole 1202 on the top cover body 12 and is connected with the fourth end plate 4, in another embodiment, the second pole 7 can be welded to the second side 302 of the third end plate 3. Because the second pole 7 and the third terminal plate 3 are made of the same material, the welding position of the second pole 7 and the third terminal plate 3 can be selected according to actual needs, and therefore production cost is reduced. In the present embodiment, the second pole 7 is a positive pole.
Referring to fig. 4 and 5, specifically, the metal layer 101 of the first end plate 1 is provided with the mounting groove 102, the third through hole 103 penetrates through the mounting groove 102. in this embodiment, the third through hole 103 penetrates through the first end plate 1, the peripheral portion of the first pole 6 is provided with the first stepped surface 601, and the first stepped surface 601 abuts against the groove bottom of the mounting groove 102, so that the difficulty in mounting and positioning between the first pole 6 and the first end plate 1 can be reduced, and the assembly efficiency of the battery top cover can be improved. Correspondingly, the first side surface 201 of the third end plate 3 may also be provided with the mounting groove 102, the second through hole is provided at the bottom of the mounting groove 102, and the peripheral portion of the second pole 7 is also correspondingly provided with the first step surface 601, so as to reduce the difficulty in mounting and positioning between the second pole 7 and the third end plate 3.
In an embodiment, the third through hole 103 is not formed in the first end plate 1, the shape of the mounting groove 102 may be various, at this time, the first pole 6 is inserted into the mounting groove of the first end plate 1, the end of the first pole 6 abuts against the groove bottom of the mounting groove 102, and at this time, the first pole 6 and the first end plate 1 are connected in a welding manner, so that the structure of the battery top cover can be simplified, the assembling steps of the battery top cover are reduced, and the production cost is reduced.
Referring to fig. 4 and 5, specifically, the peripheral portion of the first pole 6 is provided with a second step surface 602, a boss 603 protruding from the peripheral portion of the first pole 6 is formed between the first step surface 601 and the second step surface 602, and the boss 603 is inserted into the mounting groove 102. The second step surface 602 is provided to form a boss 603 on the periphery of the first terminal 6, so that a welding position can be reserved between the first terminal 6 and the metal layer 101, and the welding quality between the first terminal 6 and the first end plate 1 can be ensured.
Specifically, the distance between the first step surface 601 and the second step surface 602 is equal to the depth of the mounting groove 102, that is, the second step surface 602 is flush with the surface of the metal layer 101, so that the welding quality between the first pole 6 and the first end plate 1 can be further improved. Correspondingly, the third end plate 3 may also be provided with the mounting groove 102, and the peripheral portion of the second pole 7 is provided with the first step surface 601 and the second step surface 602, so as to reduce the difficulty in positioning between the second pole 7 and the third end plate 3 and improve the welding quality between the second pole 7 and the third end plate 3.
Specifically, the aperture that first end plate 1 third through-hole 103 is close to top cap body 12 one end is less than the aperture that top cap body 12 one end was kept away from to third through-hole 103, and first utmost point post 6 and first end plate 1 are riveted, not only can reduce the degree of difficulty that first utmost point post 6 and first end plate 1 were fixed in advance like this, can also reduce the use of connecting piece. Of course, the second end plate 2 and the first pole 6 can also be connected in a riveting manner, the second end plate 2 is provided with a fourth through hole, and the aperture of the end, close to the top cover body 12, of the fourth through hole is smaller than the aperture of the end, far away from the top cover body 12, of the fourth through hole. Correspondingly, the second pole 7 and the third end plate 3 and the fourth end plate 4 can be connected in a riveting mode, and the use of connecting pieces is reduced.
Specifically, the battery top cap includes sealing member 8, and sealing member 8 is used for the clearance between shutoff first utmost point post 6 and the top cap body 12, and of course, sealing member 8 also can set up between second utmost point post 7 and top cap body 12 to avoid the inside electrolyte of battery to flow out of the battery and cause the potential safety hazard. In this embodiment, the sealing member 8 is rubber, a fifth through hole is formed in the sealing member 8, the first pole column 6 penetrates through the fifth through hole of the sealing member 8, the sealing member 8 has a first end and a second end, the diameter of the first end is smaller than that of the second end, the first end of the sealing member 8 is inserted into the first through hole 1202 to achieve installation and positioning of the sealing member 8, installation difficulty of the sealing member 8 is reduced, and the second end of the sealing member 8 is compressed tightly by the second end plate 2 and the top cover body 12 to achieve sealing.
Specifically, in this embodiment, the top cover body 12 is made of metal, and the insulating member 9 is disposed between the first end plate 1 and the top cover body 12, in this embodiment, the insulating member 9 is made of plastic, and of course, the insulating member 9 is also disposed between the third end plate 3 and the top cover body 12, so that a short circuit inside the battery can be avoided. In other embodiments, the seal 8 at the negative pole may also be disposed between the second end plate 2 and the top cap body 12, and the seal 8 at the positive pole may be disposed between the fourth end plate 4 and the top cap body 12. In other embodiments, when the top cover body 12 is made of other insulating materials such as plastic, the insulating member 9 may not be provided.
Specifically, the first end plate 1, the third end plate 3 and the top cover body 12 are all provided with a groove 105 for mounting the insulating member 9, so as to reduce the assembly difficulty of the battery top cover.
Specifically, a liquid injection hole 1201 is formed in the top cover of the battery, and when the battery is assembled, electrolyte can be injected into the battery through the liquid injection hole 1201; the battery top cover is also provided with an explosion-proof hole, the explosion-proof valve 11 is arranged on the explosion-proof hole, and when the battery core is expanded and deformed in the use process of the battery, the explosion-proof valve 11 can balance the pressure in the battery, so that the expansion and explosion of the battery are avoided, and the safety performance of the battery is improved; one side that top cap body 12 is close to electric core is provided with setting element 10, and setting element 10 can make things convenient for the installation location between battery top cap and the battery case, and in this embodiment, the material of setting element 10 is the plastic.
Claims (10)
1. The utility model provides a battery top cap, includes top cap body, end plate subassembly and battery utmost point post, be provided with first through-hole on the top cap body, battery utmost point post runs through first through-hole, a serial communication port, the end plate subassembly includes first end plate and second end plate, battery utmost point post includes first utmost point post, the one end of first utmost point post with first end plate is connected, the other end of first utmost point post runs through first through-hole with the second end plate is connected, first end plate includes the board body and sets up the metal level of board body one side, the metal level sets up the board body is close to one side of top cap body, the metal level with the material of first utmost point post is first metal, the material of board body is the second metal, first utmost point post with the metal level welding.
2. The battery top cap of claim 1, wherein the battery post comprises a second post, the end plate assembly comprises a third end plate and a fourth end plate, a second through hole is formed in the third end plate, one end of the second post is inserted into the second through hole and connected with the third end plate, the other end of the second post penetrates through the first through hole and connected with the fourth end plate, the second post and the third end plate are made of the second metal, the third end plate has a first side and a second side which are opposite, the first side is located on the side, close to the top cap body, of the second side, and the second post and the first side are welded.
3. The battery top cap of claim 1, wherein the battery post comprises a second post, the end plate assembly comprises a third end plate and a fourth end plate, a second through hole is formed in the third end plate, one end of the second post is inserted into the second through hole and connected with the third end plate, the other end of the second post penetrates through the first through hole and connected with the fourth end plate, the second post and the third end plate are made of the second metal, the third end plate has a first side and a second side which are opposite to each other, the first side is located on one side, close to the top cap body, of the second side, and the second post and the second side are welded to each other.
4. The battery cap of claim 1, wherein the first terminal is a negative terminal, the first metal is copper, and the second metal is aluminum.
5. The battery top cap of claim 1, wherein the first end plate is provided with a third through hole, the metal layer is provided with a mounting groove, the third through hole penetrates through a groove bottom of the mounting groove, the periphery of the first pole is provided with a first step surface, and the first step surface abuts against the groove bottom of the mounting groove; or the like, or, alternatively,
the metal layer is provided with an installation groove, and the first pole column is inserted into the installation groove.
6. The battery top cap according to claim 5, wherein a second step surface is provided on the periphery of the first pole, a boss protruding from the periphery of the first pole is formed between the first step surface and the second step surface, and the boss is inserted into the mounting groove.
7. The battery top cap of claim 6, wherein a distance between the first step surface and the second step surface is equal to a depth of the mounting groove.
8. The battery top cap of claim 1, wherein the first end plate is provided with a third through hole, the diameter of the third through hole at the end close to the top cap body is smaller than the diameter of the third through hole at the end far away from the top cap body, and the first terminal post is riveted with the first end plate; and/or the presence of a gas in the gas,
the second end plate is provided with a fourth through hole, the diameter of the fourth through hole close to one end of the top cover body is smaller than that of the fourth through hole far away from one end of the top cover body, and the first pole column is riveted with the second end plate.
9. The battery top cap of claim 1, wherein an insulator is disposed between the first end plate and/or the second end plate and the top cap body.
10. A battery comprising the battery top cap of any one of claims 1 to 9, wherein the battery post of the battery top cap is electrically connected to the cell inside the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122265411.1U CN216250923U (en) | 2021-09-17 | 2021-09-17 | Battery top cap and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122265411.1U CN216250923U (en) | 2021-09-17 | 2021-09-17 | Battery top cap and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216250923U true CN216250923U (en) | 2022-04-08 |
Family
ID=80985103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122265411.1U Active CN216250923U (en) | 2021-09-17 | 2021-09-17 | Battery top cap and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216250923U (en) |
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2021
- 2021-09-17 CN CN202122265411.1U patent/CN216250923U/en active Active
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