CN220253343U - High-power battery cap assembly - Google Patents
High-power battery cap assembly Download PDFInfo
- Publication number
- CN220253343U CN220253343U CN202320673904.5U CN202320673904U CN220253343U CN 220253343 U CN220253343 U CN 220253343U CN 202320673904 U CN202320673904 U CN 202320673904U CN 220253343 U CN220253343 U CN 220253343U
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- CN
- China
- Prior art keywords
- block
- cap
- lid
- leg
- power battery
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- 238000007789 sealing Methods 0.000 claims description 54
- 239000012528 membrane Substances 0.000 claims description 20
- 238000009423 ventilation Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 239000003792 electrolyte Substances 0.000 claims description 12
- 239000011810 insulating material Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 8
- 239000002893 slag Substances 0.000 abstract description 8
- 238000005520 cutting process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation 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
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of the battery, a high-power battery cap subassembly is disclosed, including the cap head, the bottom fixedly connected with block body of cap head, the outer wall parcel of cap head and block body has the seal cover, the bottom slidable mounting of block body has the block leg, the electrode has been placed to the opposite face of block leg, through the bottom slidable mounting block leg at the block body for when welding the block leg on the electrode in the battery body, if the welding slag is protruding, or the material is heated and expands, the block leg can compress spring and release a part stress, prevent that the block subassembly installation is crooked, or bad contact, the cooperation is pegged graft at the top of cap head simultaneously and is connected with the cutting of fixed strip, makes when welding block leg and electrode connection, can control the holistic position of block subassembly through holding the antiskid piece, prevents deformation when welding, causes the hookup location inaccuracy, prevents the block subassembly from crooked.
Description
Technical Field
The application belongs to the technical field of batteries, and particularly relates to a high-power battery cap assembly.
Background
Along with the increase of the demand of high-power products such as electric automobiles, higher requirements are put on the lithium ion battery, and the battery is required to have reliable structure, good consistency, safety and reliability, so that the materials, processes and equipment of the lithium ion battery are improved continuously.
As disclosed in patent No. CN2713649Y, a battery cap assembly includes a cap body, a sealing gasket is covered on an edge of the cap body, and the sealing gasket is connected with the cap body in a non-separable manner; the sealing gasket is directly coated on the cap body in an injection molding way, and three surfaces of the sealing gasket cling to the edge of the cap body to form an integral structure; the sealing gasket is annular, the section of the sealing gasket is , and the integral assembly structure replaces the structure that the cap body and the sealing gasket are separated in the prior art, so that the manufacturing and mounting procedures of the battery are simplified.
In the process of realizing the application, the technology is found to have the following problems, the nut cap body of the patent lacks fixed limit structure design when the battery cell is welded, materials can expand or welding slag is raised when welding is carried out, if no fixed limit device is adopted, displacement occurs when the nut cap body is welded, deflection is generated, gas is generated in the nut cap body when the battery discharges, and if only a through hole is formed, and the electrolyte also leaks to pollute the environment when the gas flows out.
Disclosure of Invention
The purpose of the present application is: in order to solve the problem that the nut cap body of the patent lacks fixed limit structure design when the battery cell is welded, because the material can expand or have the welding slag protruding when welding, displacement appears when easily causing the nut cap body if there is not fixed stop device, produces the skew, and inside can produce gas when the battery discharges simultaneously, if only set up the through-hole, when gas flows out, the electrolyte also can leak the problem of pollution environment, provides a high-power battery nut cap subassembly.
The technical scheme adopted by the application is as follows: the utility model provides a high-power battery block subassembly, includes the lid cap, the bottom fixedly connected with lid cap body of lid cap, the seal cover has been seted up to the outer wall parcel of lid cap head and lid cap body, the bottom slidable mounting of lid cap body has the lid cap leg, the electrode has been placed to the opposite face of lid cap leg, the outer wall cover of electrode is equipped with the battery body, the bleeder vent has in the middle part of lid cap body been seted up, the inner chamber top fixed mounting of lid cap head has the atmospheric pressure regulating block, the sliding plate has in the atmospheric pressure regulating block, the bottom fixed mounting of sliding plate has the sealing rod, and the bottom of sealing rod passes the atmospheric pressure regulating block and laminating mutually with interior bleeder vent, the outer ventilation hole that link up has all been seted up to the top both sides of lid cap head and seal cover, the cutting is installed in the grafting of the top both sides of seal cover, the top both sides of seal cover have the slot with the looks adaptation of cutting, the top fixed mounting of cutting has the fixed strip.
In a preferred embodiment, the sealing sleeve is made of an insulating material, and the sealing sleeve is connected with the cap head and the cap body in a sealing way.
The sealing cap head and the cap body are connected through the sealing sleeve, so that leakage of the battery and leakage of electrolyte are prevented from polluting the external environment.
In a preferred embodiment, a first chute matched with the cap leg is formed at the bottom of the cap body, and the top of the cap leg is connected with the cap body through a first spring.
By slidably mounting the cap legs at the bottom of the cap body, when the cap legs are welded to the electrode in the battery body, if the welding slag is raised or the material is expanded by heating, the cap legs compress the spring to release a part of the stress, so that the cap assembly is prevented from being installed askew or poor contact.
In a preferred embodiment, a semi-permeable membrane is fixedly arranged on the inner wall of the inner ventilation hole, and the semi-permeable membrane is made of polyvinyl chloride synthetic resin through which gas can pass but electrolyte cannot pass.
By providing the semi-permeable membrane such that when the cell body is operated to discharge to produce gas, the gas will be prevented from expanding and exploding from the semi-permeable membrane by releasing the pressure within the cell, while the electrolyte cannot pass through the semi-permeable membrane, preventing the electrolyte from flowing out to pollute the environment.
In a preferred embodiment, a second sliding groove matched with the sliding plate is formed in the air pressure adjusting block, and the top of the sliding plate is connected with the air pressure adjusting block through a second spring.
In a preferred embodiment, the sealing rod is located above the semi-permeable membrane, and the air pressure adjusting block is provided with a slot adapted to the sealing rod.
Through setting up the sealing rod for when the gas pressure in the battery risees, can jack up the sealing rod in follow interior bleeder vent, slide on the sealing rod can compress No. two spring release pressure, and then makes the sealing rod upwards open the passageway of interior bleeder vent, releases out in the outer ventilation hole of seting up on the body of the lid cap head and the lid with gas.
In a preferred embodiment, the fixing strip is attached to the outer wall of the battery body, an anti-skid block is fixedly arranged at the bottom of the fixing strip, and a rubber anti-skid pad is fixedly arranged at the outer side of the anti-skid block.
The slotting with the fixing strips is connected to the top of the sealing sleeve in an inserting mode, so that when the welding cap legs are connected with the electrodes, the whole position of the cap assembly can be controlled by pinching the anti-sliding blocks, deformation during welding is prevented, the connecting position is inaccurate, and the cap assembly is prevented from being skewed.
In summary, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:
1. in this application, through the bottom slidable mounting block leg at the block body for when welding the block leg to the electrode in the battery body, if the welding slag is protruding, or the material is heated and expands, the block leg can compress spring and release a part stress, prevent that the block subassembly installation from crooked, or the contact failure, the cooperation is pegged graft at the top of block head simultaneously and is connected with the cutting of fixed strip, make when welding block leg and electrode connection, can control the holistic position of block subassembly through holding the non slipping block, prevent the deformation when welding, cause hookup location imprecise, prevent the block subassembly crooked.
2. In this application, owing to set up sealing rod and semi-permeable membrane for when battery body work discharge produced gas and made the atmospheric pressure rise, gas can pass through from semi-permeable membrane and electrolyte can not pass through semi-permeable membrane, gas can jack up sealing rod in the bleeder vent in the follow in this moment, slide on the sealing rod can compress No. two spring release pressures, and then make sealing rod upwards open the passageway of bleeder vent, release gas from covering cap head and seal cover in the outer vent of seting up, release the pressure in the battery prevents inflation and explosion, prevent the electrolyte follow simultaneously and flow out polluted environment.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present application;
FIG. 2 is a schematic structural view of the present application;
fig. 3 is a schematic view of the fixing strip and the adjacent structure thereof in the present application.
The marks in the figure: 1-cap head, 2-cap body, 3-seal sleeve, 4-cap leg, 5-electrode, 6-battery body, 7-inner vent, 8-semi-permeable membrane, 9-air pressure regulating block, 10-slide plate, 11-seal rod, 12-outer vent, 13-fixing strip, 14-cutting and 15-anti-skid block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Referring to fig. 1 and 2, a high-power battery cap assembly comprises a cap head 1, a cap body 2 is fixedly connected to the bottom of the cap head 1, a sealing sleeve 3 is wrapped on the outer walls of the cap head 1 and the cap body 2, the sealing sleeve 3 is made of insulating materials, the sealing sleeve 3 is connected with the cap head 1 and the cap body 2 in a sealing mode, a cap leg 4 is slidably mounted on the bottom of the cap body 2, a first sliding groove matched with the cap leg 4 is formed in the bottom of the cap body 2, the top of the cap leg 4 is connected with the cap body 2 through a first spring, an electrode 5 is placed on the opposite surface of the cap leg 4, a battery body 6 is sleeved on the outer wall of the electrode 5, and when the cap leg 4 is welded to the electrode 5 in the battery body 6, if welding slag is protruded or the materials are heated and expanded, the cap leg 4 can compress the spring to release a part of stress, and the cap assembly is prevented from being installed to be inclined or poor in contact.
Referring to fig. 1 and 2, the middle part of the cap body 2 is provided with an inner ventilation hole 7, the inner wall of the inner ventilation hole 7 is fixedly provided with a semi-permeable membrane 8, the semi-permeable membrane 8 is made of polyvinyl chloride synthetic resin which can pass through gas but cannot pass through electrolyte, the top of the inner cavity of the cap head 1 is fixedly provided with a gas pressure regulating block 9, a sliding plate 10 is slidably arranged in the gas pressure regulating block 9, a second sliding groove matched with the sliding plate 10 is formed in the gas pressure regulating block 9, the top of the sliding plate 10 is connected with the gas pressure regulating block 9 through a second spring, the bottom of the sliding plate 10 is fixedly provided with a sealing rod 11, the bottom of the sealing rod 11 passes through the gas pressure regulating block 9 and is attached to the inner ventilation hole 7, the sealing rod 11 is positioned above the semi-permeable membrane 8, the sealing sleeve 9 is provided with a slot matched with the sealing rod 11, the two sides of the top of the cap head 1 and the top of the cap head 3 are respectively provided with an outer ventilation hole 12 which is mutually communicated, and the sealing sleeve 11 and the semi-permeable membrane 8 are arranged, when the battery body 6 is discharged to generate gas to enable the gas to rise, the gas can pass through the semi-permeable membrane 8 and cannot pass through the sealing rod 8 and pass through the gas pressure regulating block 9 and can not pass through the sealing rod 7 and can be prevented from being discharged from the inner ventilation hole 11 to the inner ventilation hole 11, the sealing cap 11 and the inner ventilation hole 11 can be released from the inner ventilation hole 11 and the inner ventilation hole 11 is further prevented from being polluted by the sealing cap 11.
Referring to fig. 1, 2 and 3, the slotting 14 is inserted and installed on two sides of the top of the sealing sleeve 3, the slots matched with the slotting 14 are formed on two sides of the top of the sealing sleeve 3, the fixing strips 13 are fixedly installed on the top of the slotting 14, the fixing strips 13 are attached to the outer wall of the battery body 6, the anti-slip blocks 15 are fixedly installed on the bottoms of the fixing strips 13, the rubber anti-slip pads are fixedly installed on the outer sides of the anti-slip blocks 15, and the slotting 14 of the fixing strips 13 is inserted and installed on the top of the sealing sleeve 3, so that when the welding cap legs 4 and the electrodes 5 are connected, the whole position of the cap assembly can be controlled by pinching the anti-slip blocks 15, the deformation during welding is prevented, the connecting position is inaccurate, and the cap assembly is prevented from being skewed.
The above connection method is a connection method commonly used in the prior art, and will not be described in detail.
The implementation principle of the embodiment of the application is as follows:
firstly, the slotting 14 on the fixing strip 13 is inserted into slots formed in two sides of the top of the sealing sleeve 3, then the anti-slip blocks 15 are pinched to be propped against the battery body 6 to control the overall position of the cap assembly, so that the cap legs 4 are opposite to the cap legs 4, then the cap legs 4 and the electrodes 5 are welded, the cap legs 4 can be expanded by welding slag during welding to jack up the cap legs 4, and the cap legs 4 are in sliding connection with the cap body 2, so that the expansion of materials or the protrusion of the welding slag during welding can not influence the overall position deviation of the cap assembly, and the skew is prevented.
When welding is finished, the fixing strip 13 is taken down, the cap assembly and the battery body 6 are integrally and hermetically connected together through the battery insulation outer package, when the battery works and discharges, gas is generated to enable the internal air pressure to rise, the gas can pass through the semi-permeable membrane 8, electrolyte cannot pass through the semi-permeable membrane 8, at the moment, the gas can jack up the sealing rod 11 from the inner ventilation holes 7, the sliding plate 10 on the sealing rod 11 can compress the second spring to release pressure, the sealing rod 11 is further enabled to upwards open the channel of the inner ventilation holes 7, the gas is released from the outer ventilation holes 12 formed in the cap head 1 and the sealing sleeve 3, the pressure in the battery is released to prevent expansion and explosion, and meanwhile, the electrolyte is prevented from flowing out to pollute the environment.
The foregoing description of the preferred embodiment of the present utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a high-power battery block subassembly, includes lid head (1), its characterized in that: the utility model discloses a lid, including lid head (1), lid body (2), lid head (1) and lid body (2), the outer wall parcel of lid head (1) and lid body (2) has seal cover (3), lid leg (4) are had to the bottom slidable mounting of lid body (2), electrode (5) have been placed to the opposite face of lid leg (4), the outer wall cover of electrode (5) is equipped with battery body (6), bleeder vent (7) have been seted up at the middle part of lid body (2), inner chamber top fixed mounting of lid head (1) has atmospheric pressure regulating block (9), sliding plate (10) have in atmospheric pressure regulating block (9), the bottom fixed mounting of sliding plate (10) has sealing rod (11), and the bottom of sealing rod (11) passes atmospheric pressure regulating block (9) and laminating mutually with inner bleeder vent (7), outer vent (12) that link up are all seted up to the top both sides of lid head (1) and seal cover (3), insert and install insert (14) in the top both sides of seal cover (3), insert fixedly install insert (14) with insert (13) of the top of seal cover (3).
2. The high power battery cap assembly of claim 1, wherein: the sealing sleeve (3) is made of insulating materials, and the sealing sleeve (3) is connected with the cap head (1) and the cap body (2) in a sealing way.
3. The high power battery cap assembly of claim 1, wherein: a first sliding groove matched with the cap leg (4) is formed in the bottom of the cap body (2), and the top of the cap leg (4) is connected with the cap body (2) through a first spring.
4. The high power battery cap assembly of claim 1, wherein: the inner wall of the inner ventilation hole (7) is fixedly provided with a semi-permeable membrane (8), and the semi-permeable membrane (8) is made of polyvinyl chloride synthetic resin through which gas can pass but electrolyte cannot pass.
5. The high power battery cap assembly of claim 1, wherein: a second sliding groove matched with the sliding plate (10) is formed in the air pressure adjusting block (9), and the top of the sliding plate (10) is connected with the air pressure adjusting block (9) through a second spring.
6. The high power battery cap assembly of claim 1, wherein: the sealing rod (11) is positioned above the semi-permeable membrane (8), and the air pressure regulating block (9) is provided with a slot matched with the sealing rod (11).
7. The high power battery cap assembly of claim 1, wherein: the fixing strip (13) is attached to the outer wall of the battery body (6), an anti-skid block (15) is fixedly arranged at the bottom of the fixing strip (13), and a rubber anti-skid pad is fixedly arranged at the outer side of the anti-skid block (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320673904.5U CN220253343U (en) | 2023-03-30 | 2023-03-30 | High-power battery cap assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320673904.5U CN220253343U (en) | 2023-03-30 | 2023-03-30 | High-power battery cap assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220253343U true CN220253343U (en) | 2023-12-26 |
Family
ID=89262978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320673904.5U Active CN220253343U (en) | 2023-03-30 | 2023-03-30 | High-power battery cap assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220253343U (en) |
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2023
- 2023-03-30 CN CN202320673904.5U patent/CN220253343U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |