CN206040781U - Explosion -proof valve, apron subassembly and battery - Google Patents
Explosion -proof valve, apron subassembly and battery Download PDFInfo
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- CN206040781U CN206040781U CN201620809150.1U CN201620809150U CN206040781U CN 206040781 U CN206040781 U CN 206040781U CN 201620809150 U CN201620809150 U CN 201620809150U CN 206040781 U CN206040781 U CN 206040781U
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- Prior art keywords
- explosion
- proof valve
- proof
- pressure disc
- rupture pressure
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- 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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
For explosion -proof valve in overcoming prior art in process of production, when carrying out laser welding, contract to the welding seam welding seam both sides, easily leads to explosion -proof nick by drawing breakage or break, leads to the problem that explosion -proof valve became invalid, the utility model provides an explosion -proof valve, apron subassembly and battery. An explosion -proof valve, includes base member and rupture membrane, rupture membrane includes circumferential weld part and the middle portion of opening, be equipped with explosion -proof nick in rupture membrane's the portion of opening, wherein, explosion -proof nick with still be equipped with the flexible buffer structure between the welding seam between weld part and base member. The utility model provides an explosion -proof valve, it has increased the flexible buffer structure on rupture membrane, and the explosion -proof nick drawing breakage that the shrink of welding seam both sides caused in the time of can effectively avoiding carrying out laser welding is perhaps broken, the yield of explosion -proof valve in the assurance production process. Simultaneously, adopt above -mentioned flexible buffer structure, can improve the start -up pressure's of explosion -proof valve uniformity and reliability greatly, the fatigue resistance of the explosion -proof valve of promotion that simultaneously also can be fine.
Description
Technical field
The utility model is related to field of batteries, especially the explosion-proof valve on battery cover board assembly.
Background technology
With the progressively development of science and technology, the peace of the battery on automobile, energy storage device, electronic equipment etc. is widely applied
Full property is increasingly concerned by people, and wherein, when cell malfunctions cause a large amount of imflammable gas of internal generation, makes inside battery gas
Pressure is significantly raised, if taken measures not in time, may cause battery explosion.
For this purpose, the generation for preventing battery explosion, is generally individually provided with explosion-proof valve (or claiming safety valve) on battery cover board.
Existing explosion-proof valve 6 is general as shown in fig. 1, and including matrix 60 and rupture pressure disc 61, the rupture pressure disc 61 includes the weld part of periphery
610 and periphery in the middle of open portion 611；Described matrix 60 is provided with relief hole 62；The weld part 610 is welded on described matrix
On 60, the open portion 611 is made to block the relief hole 62；The open portion 611 of the rupture pressure disc 6 is provided with explosion-proof indentation
612；When weld part 610 is welded with matrix 60, weld is provided with weld seam 613, fills solder to be welded in weld seam 613.Such as
This, when inside battery air pressure exceedes the Opening pressure of explosion-proof valve 6, explosion-proof valve 6 is opened, and discharges the gas of inside battery, with
Prevent battery explosion.
However, existing explosion-proof valve 6 is in process of production, when which carries out laser welding, 613 both sides of weld seam are all to weld seam
613 shrink, and are easily caused explosion-proof indentation 612 by drawing crack or break, cause explosion-proof valve 6 to fail.Meanwhile, explosion-proof valve 6 was being used
Cheng Zhong, the pressure reduction change inside and outside battery produce impact to explosion-proof valve 6 back and forth, also easily make 6 fatigue failure of explosion-proof valve.
Utility model content
For overcoming in prior art explosion-proof valve in process of production, when carrying out laser welding, two lateral weld contraction of weld seam,
Explosion-proof indentation is easily caused by drawing crack or is broken, cause the problem of explosion-proof defective valve, the utility model provide a kind of explosion-proof valve,
Cover plate assembly and battery.
On the one hand the utility model provides a kind of explosion-proof valve, and including matrix and rupture pressure disc, the rupture pressure disc includes periphery
Weld part and periphery in the middle of open portion；
Described matrix is provided with relief hole；The weld part is welded on the matrix, the open portion is blocked in institute
State on relief hole；The open portion of the rupture pressure disc is provided with explosion-proof indentation；
Wherein, flexible buffer structure is additionally provided between the explosion-proof indentation and the weld seam between the weld part and matrix.
The utility model provide explosion-proof valve, which increased flexible buffer structure on rupture pressure disc, can be prevented effectively from into
Explosion-proof indentation drawing crack or break that during row laser welding, the contraction of weld seam both sides is caused, it is ensured that the finished product of explosion-proof valve in production process
Rate.Meanwhile, using above-mentioned flexible buffer structure, the uniformity and reliability of the startup pressure of explosion-proof valve can be greatly improved, together
When also can lift the fatigue performance of explosion-proof valve well.
Further, described matrix is provided with installation step, and the installation step includes supporting surface and side；
The weld part of the rupture pressure disc is supported on the supporting surface, the side of the weld part and the installation step it
Between form weld seam.
Further, the flexible buffer structure is annular.
Further, the flexible buffer structure includes more than one crest and/or trough.
Further, the flexible buffer structure includes a crest and trough.
Further, the weld part thickness of the rupture pressure disc is 0.2-0.8mm, and the open portion thickness of the rupture pressure disc is
0.05-0.15mm。
Further, the height between the crest and/or trough and open portion surface is the 1-8 of the open portion thickness
Times.
Further, the upper surface of the rupture pressure disc is also equipped with an air bag.Air bag can be by inside battery high-temperature combustible gas
Body is isolated with the oxygen in air, it is ensured that battery is not on fire after pressure release, does not cause secondary danger.
Further, the week edge of the air bag is enclosed with sealant layer；The sealant layer includes sealing upper glue layer and close
Envelope lower glue layer, the sealing lower glue layer glue by air bag week along it is gluing on the matrix, a compressing tablet is pressed in the sealing upper glue layer
On.
Further, the gas-storing capacity of the air bag is 0.1～100 times of inside battery residue inflatable volume.
Further, the gas-storing capacity of the air bag is 1～50 times of inside battery residue inflatable volume.
Further, the gas-storing capacity of the air bag is 2～10 times of inside battery residue inflatable volume.
The utility model second aspect provides a kind of cover plate assembly, and including cover board body, the cover board body is provided with
Above-mentioned explosion-proof valve.
The cover plate assembly that the utility model is provided, due to the explosion-proof valve being mounted with its cover board body after improving, this is explosion-proof
Valve increased flexible buffer structure on rupture pressure disc, can be prevented effectively from weld seam both sides when carrying out laser welding and shrink cause anti-
Quick-fried indentation drawing crack is broken, it is ensured that the yield rate of explosion-proof valve in production process.Meanwhile, using above-mentioned flexible buffer structure, can
To greatly improve the uniformity and reliability of the startup pressure of explosion-proof valve, while the fatigue durability of explosion-proof valve also can be lifted well
Energy.
The utility model third aspect provides a kind of battery, and the battery includes shell, pole piece and cover plate assembly, described
Cover plate assembly and shell form closing space, and the pole piece is installed in the closing space.
The battery that the utility model is provided, is mounted with the explosion-proof valve after improving on the cover board body of its cover plate assembly, this is prevented
Quick-fried valve increased flexible buffer structure on rupture pressure disc, can be prevented effectively from weld seam both sides when carrying out laser welding and shrink what is caused
Explosion-proof indentation drawing crack is broken, it is ensured that the yield rate of explosion-proof valve in production process.Meanwhile, using above-mentioned flexible buffer structure,
The uniformity and reliability of the startup pressure of explosion-proof valve can be greatly improved, while the endurance of explosion-proof valve also can be lifted well
Performance.
Description of the drawings
Fig. 1 is the explosion-proof valve generalized section provided in prior art；
Fig. 2 is the battery schematic perspective view provided in the utility model specific embodiment；
Fig. 3 is a kind of matrix generalized section provided in the utility model specific embodiment；
Fig. 4 is a kind of explosion-proof valve generalized section provided in the utility model specific embodiment；
Fig. 5 is the further preferred explosion-proof valve generalized section provided in the utility model specific embodiment；
Fig. 6 is the explosion-proof valve use state schematic diagram provided in Fig. 5.
Wherein, 1, cover board body；2nd, shell；3rd, first electrode component；4th, second electrode component；5th, fluid injection escutcheon；6th, prevent
Quick-fried valve；60th, matrix；61st, rupture pressure disc；62nd, relief hole；63rd, air bag；64th, sealant layer；65th, compressing tablet；601st, installation step；
610th, weld part；611st, open portion；612nd, explosion-proof indentation；613rd, weld seam；614th, crest；615th, trough；63rd, gas storage space；
6011st, supporting surface；6012nd, side；641st, seal lower glue layer；642nd, seal upper glue layer.
Specific embodiment
In order that technical problem, technical scheme and beneficial effect that the utility model is solved become more apparent, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that described herein be embodied as
Example only to explain the utility model, is not used to limit the utility model.
Embodiment
This example will carry out specific explanations explanation to battery, cover plate assembly and explosion-proof valve 6 disclosed in the utility model.
As shown in Fig. 2 this example discloses a kind of battery, the battery includes shell 2, pole piece and cover plate assembly, the lid
Board component and shell 2 form closing space, and the pole piece is installed in the closing space.Battery in this example can for lithium from
Sub- battery, or other kinds of nickel-based battery or lead-acid battery etc..The pole piece is by positive plate, barrier film, negative plate volume
Around or it is stacked formed, which is public domain.Wherein, above-mentioned cover plate assembly includes cover board body 1, pacifies on the cover board body 1
Equipped with explosion-proof valve 6.Wherein, typically on cover plate assembly, the also different first electrode component 3 and second of insulating mounting polarized is electric
Pole component 4.First electrode component 3 generally comprises first electrode and the first insulating part etc., and the first insulating part makes first electrode and lid
Plate body 1 insulate；Second electrode component 4 generally comprises second electrode and the second insulating part etc., and the second insulating part makes second electrode
Insulate with cover board body 1；When above-mentioned first electrode is positive pole, then second electrode is negative pole, conversely, when first electrode is negative pole,
Then second electrode is positive pole.Wherein, its positive pole is electrically connected with the positive plate of pole piece, and negative pole is electrically connected with the negative plate of pole piece.One
As be additionally provided with liquid injection hole on the cover board body 1, be covered with liquid injection hole cover 5 on liquid injection hole.
As the structure beyond explosion-proof valve 6 on this example cover plate assembly not to battery is improved, therefore, it is only right below
The structure of its explosion-proof valve 6 carries out specific explanations explanation.
As shown in Figure 3, Figure 4, the explosion-proof valve 6 that this example is provided includes matrix 60 and rupture pressure disc 61, and the rupture pressure disc 61 includes
The weld part 610 of periphery and middle open portion 611；
Described matrix 60 is provided with relief hole 62；The weld part 610 is welded in described matrix 60, makes the open portion
611 closure are on the relief hole 62；The open portion 611 of the rupture pressure disc 61 is provided with explosion-proof indentation 612；
As rupture pressure disc 61 is arranged on by the way of welding on matrix 60, when rupture pressure disc 61 it is very tight when,
Rupture pressure disc 61 is easily damaged in welding process, therefore, the explosion-proof indentation 612 and the weldering between the weld part 610 and matrix 60
Flexible buffer structure is additionally provided between 613 (as shown in figs. 1 and 4) of seam.Flexible buffer structure effectively can be alleviated due to weldering
61 drawing crack of caused rupture pressure disc or break when connecing.
Wherein, for welding with matrix 60, open portion 611 then mainly realizes which is prevented to the weld part 610 of above-mentioned rupture pressure disc 61
Quick-fried function, its thickness are thinner generally relative to weld part 610, will rupture pressure disc 61 middle part it is ironed after formed open portion 611.
Specifically, as shown in figure 3, described matrix 60 is provided with installation step 601, the installation step 601 includes supporting
Face 6011 and side 6012；
The weld part 610 of the rupture pressure disc 61 is supported on the supporting surface 6011, the weld part 610 and the installation
Weld seam 613 is formed between the side 6012 of step 601；The weld part 610 is welded on by the installation step by weld seam 613
In 601.Welding can be Laser Welding or soldering.60 one side of matrix is used for installing the installation carrier of rupture pressure disc 61, in addition,
Also for welding (or also may be installed on shell 2, be selectively mounted in this example on cover board body 1) with cover board body 1, or
The matrix 60 also can be molded with 1 integrated punching of cover board body, itself part as cover board body 1.That is the matrix 60 can be with
It is the structure mutually independent with cover board body 1 or shell 2, or, it is also possible to it is integrally formed on cover board body 1 or shell 2
Go out matrix 60, in other words, namely cover board body 1 or shell 2 are used as the matrix 60 of explosion-proof valve 6.
So-called flexible buffer structure, refers to the structure with the deformation of certain buffering, and which is integrally formed on rupture pressure disc 61.It is anti-
When quick-fried film 61 is welded in installation process, although 613 two ends of weld seam still can be shunk to weld seam 613, but due to there is the flexibility to delay
Rush the presence of structure so as to can extend at weld seam 613 at flexible buffer structure, so so that in welding process, not
The infringement that drawing crack can be caused to rupture pressure disc 61 or broken.Meanwhile, in use, even if the pressure reduction inside and outside battery becomes
Change and impact is produced to explosion-proof valve 6 back and forth, due to the presence for having the flexible buffer structure, in its 61 Opening pressure scope of rupture pressure disc
It is interior, can effectively alleviate the pressure reduction change inside and outside its battery and impact is produced to explosion-proof valve 6 back and forth, prevent explosion-proof valve 6 from failing.
Wherein, the material of rupture pressure disc 61 can adopt aluminium foil well-known to those skilled in the art, or other
Material known to art personnel.
In this example, the position of its flexible buffer structure setting is not specifically limited, as preferred mode, as shown in figure 4,
The flexible buffer structure setting is between the explosion-proof indentation 612 and the weld seam 613.
Specifically, the flexible buffer structure is annular.With regard to the shape and size of flexible buffer structure, especially do not limit
It is fixed, as long as which is can guarantee that in welding process, rupture pressure disc 61 will not be damaged, the design of rupture pressure disc 61 will not be affected again to open pressure
Power.Such as, the flexible buffer structure includes more than one crest 614 and/or trough 615.In this example, the flexibility
Buffer structure includes a crest 614 and trough 615.610 thickness of weld part of the rupture pressure disc 61 is 0.2-0.8mm, described
611 thickness of open portion of rupture pressure disc 61 is 0.05-0.15mm.
Meanwhile, the height and width of the crest 614 and/or trough 615 are not specially limited, and applicant is in R＆D process
It was found that, by taking the above-mentioned flexible buffer structure with a crest 614 and a trough 615 as an example, the crest 614 and trough
Height between 615 and 611 surface of open portion is 1-8 times of 611 thickness of the open portion more reasonable.It is further preferred that institute
State that the height between crest 614 and trough 615 and 611 surface of open portion is 611 thickness of the open portion 1-5 times.This place
The height of meaning, refers to the highest point of crest 614 relative to the upper surface of open portion 611 and the lowest point of trough 615 relative to opening
Open the distance between the lower surface in portion 611.
As further improved mode, as shown in figure 5, the top of the rupture pressure disc 61 is also equipped with an air bag 63.Gas
Capsule 63 is the high-temperature combustible gas body produced for storage batteries inside, therefore, which needs to have resistant to elevated temperatures performance, and can have
Standby certain elasticity, when internal gas are gone out from relief hole 62, can open rapidly, and accommodate above-mentioned high-temperature combustible gas body.
In the shape compressed shown in figure under 63 normal condition of air bag, when battery occurs exception, during battery pressure release, air bag 63 opens and is in
State shown in Fig. 6.Inside battery high-temperature combustible gas body can be isolated by air bag 63 with the oxygen in air, it is ensured that battery is after pressure release
It is not on fire, do not cause secondary danger.
With regard to the mounting means of the air bag 63, it is not specially limited, as long as which can be fixed on matrix 60, it is ensured that will not leak
Gas.Such as, in this example, which is installed in the following way：The week edge of the air bag 63 is enclosed with sealant layer 64；It is described close
Adhesive layer 64 includes sealing upper glue layer 642 and sealing lower glue layer 641, and sealing 641 glue of lower glue layer is by air bag 63 weeks along gluing
In described matrix 60, and it is pressed on the sealing upper glue layer 642 by a compressing tablet 65.The compressing tablet 65 is used for pushing down air bag 63
Bonding site, reinforces adhesive strength.
Wherein, during the material of the air bag 63 is latex, natural rubber, EPDM, fluorubber, aluminium foil, PA or PE
It is a kind of.
With regard to the gas-storing capacity of air bag 63, can according to inside battery gas production number, and which is internal remaining inflatable
Depending on the size of volume.In the design process, can be obtained by testing, be not particularly limited.Wherein, as an example, it is described
The gas-storing capacity of air bag 63 is 0.1～100 times of inside battery residue inflatable volume.So-called remaining inflatable volume, refers to which
Inside battery accommodates remaining space beyond the spaces of inside battery structure such as pole piece, electrolyte.It is as preferred mode, described
The gas-storing capacity of air bag 63 is 1～50 times of inside battery residue inflatable volume.Further, the gas-storing capacity of its air bag 63
For 2～10 times of inside battery residue inflatable volume.
Used as preferred mode, the explosion-proof valve 6 also includes valve bonnet (unmarked in figure), and its valve bonnet is also mounted at matrix 60
On, for preventing external force from causing to damage to explosion-proof valve 6.
The explosion-proof principle of the battery with explosion-proof valve 6 is as follows：As shown in fig. 6, when battery is abnormal, it is explosion-proof after the improvement
Valve 6 can be opened under the Opening pressure of setting from explosion-proof indentation 612, and battery pressure release prevents battery explosion.Meanwhile, air bag 63
Open to form gas storage space 630, internal high temperature fuel gas is received by the gas storage space 630, is isolated with the oxygen in air, protect
Card battery is not on fire after pressure release, does not cause secondary danger.
The explosion-proof valve 6 of this example offer, cover plate assembly and the battery including cover plate assembly that explosion-proof valve 6 is installed, due to
Explosion-proof valve 6 after which improves increased flexible buffer structure on rupture pressure disc 61, and therefore, it can be prevented effectively from carries out laser welding
When 613 both sides of weld seam shrink 612 drawing crack of explosion-proof indentation that causes or break, it is ensured that the yield rate of explosion-proof valve 6 in production process.
Meanwhile, using above-mentioned flexible buffer structure, the uniformity and reliability of the startup pressure of explosion-proof valve 6 can be greatly improved, while
Also the fatigue performance of explosion-proof valve 6 can be lifted well.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit the utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (14)
1. a kind of explosion-proof valve, including matrix and rupture pressure disc, the rupture pressure disc includes the open portion of the weld part of periphery and centre；
Described matrix is provided with relief hole；The weld part is welded on the matrix, the open portion closure is let out described
On pressure hole；The open portion of the rupture pressure disc is provided with explosion-proof indentation；
Characterized in that, being additionally provided with flexible buffer structure between the explosion-proof indentation and the weld seam between the weld part and matrix.
2. explosion-proof valve according to claim 1, it is characterised in that described matrix is provided with installation step, the erecting bed
Rank includes supporting surface and side；
The weld part of the rupture pressure disc is supported on the supporting surface, shape between the side of the weld part and the installation step
Into weld seam.
3. explosion-proof valve according to claim 2, it is characterised in that the flexible buffer structure is annular.
4. explosion-proof valve according to claim 3, it is characterised in that the flexible buffer structure includes more than one crest
And/or trough.
5. explosion-proof valve according to claim 4, it is characterised in that the flexible buffer structure includes a crest and ripple
Paddy.
6. explosion-proof valve according to claim 4, it is characterised in that the weld part thickness of the rupture pressure disc is 0.2-0.8mm,
The open portion thickness of the rupture pressure disc is 0.05-0.15mm.
7. explosion-proof valve according to claim 6, it is characterised in that between the crest and/or trough and open portion surface
Height be 1-8 times of the open portion thickness.
8. explosion-proof valve according to claim 1, it is characterised in that the upper surface of the rupture pressure disc is also equipped with an air bag.
9. explosion-proof valve according to claim 8, it is characterised in that the week of the air bag is along being enclosed with sealant layer；It is described
Sealant layer include seal upper glue layer and sealing lower glue layer, the sealing lower glue layer by air bag week along it is gluing on the matrix,
One compressing tablet is pressed on the sealing upper glue layer.
10. explosion-proof valve according to claim 8, it is characterised in that the gas-storing capacity of the air bag can for inside battery residue
0.1～100 times of filled volume.
11. explosion-proof valves according to claim 10, it is characterised in that the gas-storing capacity of the air bag can for inside battery residue
1～50 times of filled volume.
12. explosion-proof valves according to claim 11, it is characterised in that the gas-storing capacity of the air bag can for inside battery residue
2～10 times of filled volume.
A kind of 13. cover plate assemblies, including cover board body, it is characterised in that the cover board body is provided with claim 1-12
Explosion-proof valve described in any one.
A kind of 14. batteries, it is empty that the battery includes that shell, pole piece and cover plate assembly, the cover plate assembly and shell form closing
Between, the pole piece is installed in the closing space；Characterized in that, the cover plate assembly is the cover plate described in claim 13
Component.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809150.1U CN206040781U (en) | 2016-07-29 | 2016-07-29 | Explosion -proof valve, apron subassembly and battery |
| KR1020197002833A KR102172100B1 (en) | 2016-07-29 | 2017-07-24 | Explosion-proof valve, cover plate assembly and battery |
| US16/321,402 US20200112010A1 (en) | 2016-07-29 | 2017-07-24 | Explosion-proof valve, cover plate assembly, and battery |
| PCT/CN2017/094176 WO2018019211A1 (en) | 2016-07-29 | 2017-07-24 | Explosion-proof valve, cover plate assembly, and battery |
| JP2019504719A JP6775078B2 (en) | 2016-07-29 | 2017-07-24 | Explosion-proof valve, lid assembly and battery |
| EP17833514.7A EP3477733A4 (en) | 2016-07-29 | 2017-07-24 | Explosion-proof valve, cover plate assembly, and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809150.1U CN206040781U (en) | 2016-07-29 | 2016-07-29 | Explosion -proof valve, apron subassembly and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206040781U true CN206040781U (en) | 2017-03-22 |
Family
ID=58308019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620809150.1U Active CN206040781U (en) | 2016-07-29 | 2016-07-29 | Explosion -proof valve, apron subassembly and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206040781U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018019211A1 (en) * | 2016-07-29 | 2018-02-01 | 比亚迪股份有限公司 | Explosion-proof valve, cover plate assembly, and battery |
| CN108329604A (en) * | 2018-01-29 | 2018-07-27 | 湖北华强科技有限责任公司 | A kind of liquid shell rubber pneumatic bag formula and preparation method thereof |
| WO2019114775A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Battery cover plate assembly, single cell battery, battery module, power battery, and electric vehicle |
| WO2019114773A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Current interruption device and flipping member therefor, battery cover plate assembly, single cell, battery module, power battery and electric vehicle |
| CN110400895A (en) * | 2019-07-30 | 2019-11-01 | 宁德时代新能源科技股份有限公司 | Battery module, secondary battery and top cover assembly thereof |
| WO2020133569A1 (en) * | 2018-11-19 | 2020-07-02 | 庄明 | New energy vehicle |
| CN111446387A (en) * | 2019-01-16 | 2020-07-24 | 武汉市杰精精密电子有限公司 | Battery explosion-proof cover plate suitable for stamping manufacturing and automatic welding |
| US11291128B2 (en) | 2017-06-01 | 2022-03-29 | R. Stahl Schaltgeräte GmbH | Welded pressure relief device |
| WO2022088828A1 (en) * | 2020-10-29 | 2022-05-05 | 深圳市比克动力电池有限公司 | Full-tab cylindrical lithium battery cap and full-tab cylindrical lithium battery |
| CN114937849A (en) * | 2022-03-28 | 2022-08-23 | 江苏正力新能电池技术有限公司 | Explosion-proof valve, battery cover plate assembly and power battery |
| WO2024027813A1 (en) * | 2023-05-31 | 2024-02-08 | 惠州亿纬动力电池有限公司 | Battery cover plate, battery, and electric device |
| CN117638394A (en) * | 2024-01-25 | 2024-03-01 | 蜂巢能源科技股份有限公司 | Single battery and battery pack |
| CN117977101A (en) * | 2024-03-28 | 2024-05-03 | 蜂巢能源科技股份有限公司 | Battery, battery pack and electricity utilization device |
| WO2024187936A1 (en) * | 2023-03-15 | 2024-09-19 | 常州瑞德丰精密技术有限公司 | Method for mounting explosion-proof sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018019211A1 (en) * | 2016-07-29 | 2018-02-01 | 比亚迪股份有限公司 | Explosion-proof valve, cover plate assembly, and battery |
| US11291128B2 (en) | 2017-06-01 | 2022-03-29 | R. Stahl Schaltgeräte GmbH | Welded pressure relief device |
| WO2019114775A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Battery cover plate assembly, single cell battery, battery module, power battery, and electric vehicle |
| WO2019114773A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Current interruption device and flipping member therefor, battery cover plate assembly, single cell, battery module, power battery and electric vehicle |
| US11424519B2 (en) | 2017-12-13 | 2022-08-23 | Byd Company Limited | Current interrupt apparatus and flipping member thereof, battery cover plate assembly, cell, battery module, power battery, and electric vehicle |
| CN108329604A (en) * | 2018-01-29 | 2018-07-27 | 湖北华强科技有限责任公司 | A kind of liquid shell rubber pneumatic bag formula and preparation method thereof |
| WO2020133569A1 (en) * | 2018-11-19 | 2020-07-02 | 庄明 | New energy vehicle |
| CN111446387A (en) * | 2019-01-16 | 2020-07-24 | 武汉市杰精精密电子有限公司 | Battery explosion-proof cover plate suitable for stamping manufacturing and automatic welding |
| CN110400895A (en) * | 2019-07-30 | 2019-11-01 | 宁德时代新能源科技股份有限公司 | Battery module, secondary battery and top cover assembly thereof |
| WO2021017905A1 (en) * | 2019-07-30 | 2021-02-04 | 宁德时代新能源科技股份有限公司 | Battery, battery cell, and top cover assembly thereof |
| WO2022088828A1 (en) * | 2020-10-29 | 2022-05-05 | 深圳市比克动力电池有限公司 | Full-tab cylindrical lithium battery cap and full-tab cylindrical lithium battery |
| CN114937849A (en) * | 2022-03-28 | 2022-08-23 | 江苏正力新能电池技术有限公司 | Explosion-proof valve, battery cover plate assembly and power battery |
| WO2024187936A1 (en) * | 2023-03-15 | 2024-09-19 | 常州瑞德丰精密技术有限公司 | Method for mounting explosion-proof sheet |
| WO2024027813A1 (en) * | 2023-05-31 | 2024-02-08 | 惠州亿纬动力电池有限公司 | Battery cover plate, battery, and electric device |
| CN117638394A (en) * | 2024-01-25 | 2024-03-01 | 蜂巢能源科技股份有限公司 | Single battery and battery pack |
| CN117638394B (en) * | 2024-01-25 | 2024-04-12 | 蜂巢能源科技股份有限公司 | Single battery and battery pack |
| CN117977101A (en) * | 2024-03-28 | 2024-05-03 | 蜂巢能源科技股份有限公司 | Battery, battery pack and electricity utilization device |
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