CN208538990U - A kind of cylindrical lithium ion battery new type explosion proof cap - Google Patents
A kind of cylindrical lithium ion battery new type explosion proof cap Download PDFInfo
- Publication number
- CN208538990U CN208538990U CN201820969430.8U CN201820969430U CN208538990U CN 208538990 U CN208538990 U CN 208538990U CN 201820969430 U CN201820969430 U CN 201820969430U CN 208538990 U CN208538990 U CN 208538990U
- Authority
- CN
- China
- Prior art keywords
- rupture disk
- ring
- explosion
- connection sheet
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of cylindrical lithium ion battery new type explosion proof caps, including top cover, explosion rupture disk, cage ring, connection sheet and sealing ring；The cap edge is connected with the explosion rupture disk edge, the edge of cage ring ring-like the package top cover and explosion rupture disk；The connection sheet is equipped with boss structure and fracture groove, and is fixedly connected by the boss structure with the explosion rupture disk, and the fracture groove is set to the junction of the boss structure and connection sheet；The sealing ring is sheathed on the connection sheet periphery.The utility model provides a kind of cylindrical lithium ion battery new type explosion proof cap, by novel power-off opening structure, effectively improves the safety anti-explosive performance and overcurrent performance of cap.
Description
Technical field
The utility model belongs to technical field of lithium ion, and in particular to a kind of cylindrical lithium ion battery new type explosion proof cap
Lid.
Background technique
Although cylindrical lithium ion battery has, single cell operation voltage is high, light-weight, specific energy is big, small in size, circulation
The advantages that service life is long, self-discharge rate is low, environmentally friendly, but there are still safety problems.Such as: high temperature, overcurrent, overcharge, over-discharge it is different
In normal situation, battery has spontaneous combustion, generates strong gas pressure, the danger such as explosion occur.Cylindrical lithium ion battery new type explosion proof cap is true
Protect the significant components of cell safety.
In existing technology, there is also many defects, such as safety anti-explosive to lack for the explosion-proof cap of cylindrical lithium ion battery
Sunken, sealing performance defect, overcurrent performance deficiency etc., are mainly manifested in: after battery anti-explosion effect, explosion rupture disk and connection sheet weldering
Point, which is detached from, to be separated, and connection sheet falls off from explosion rupture disk, and battery is vibrated or impacts, and it is existing that new short circuit is formed in battery case
As so that cause cylindrical battery occurs spontaneous combustion or explosion again.
In addition, cylindrical lithium ion battery new type explosion proof cap in the prior art, mostly multiple ring plate structures are disconnected to play
The solder joint connection of electrical protection, explosion rupture disk and connection sheet is weaker, causes cap entirety internal resistance larger, overcurrent capability is poor.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of cylindrical lithium ion battery new type explosion proof
Cap effectively improves the safety anti-explosive performance and overcurrent performance of cap by novel power-off opening structure.
The utility model technical effect to be achieved is realized by following scheme:
Cylindrical lithium ion battery new type explosion proof cap in the utility model, including top cover, explosion rupture disk, cage ring, connection
Piece and sealing ring；The cap edge is connected with the explosion rupture disk edge, and the cage ring is ring-like to wrap up the top cover and prevent
Quick-fried edge；The connection sheet is equipped with boss structure and fracture groove, and solid by the boss structure and the explosion rupture disk
Fixed connection, the fracture groove are set to the junction of the boss structure and connection sheet；The sealing ring is sheathed on the connection
Piece periphery.
The top cover is hard nickel plating round iron plate, in normal battery operation from conductive and supporting role, nickel plating help
In the inoxidizability and electric conductivity that improve, stablize top cover.The explosion rupture disk be soft flake aluminum, in normal battery operation from lead
Electricity and sealing function, by inside battery open circuit, and when cell internal pressure is excessive, rupture in time when battery is abnormal
Pressure release guarantees the safety of battery entirety.The cage ring is for improving the stability of cap and the anti-seismic performance of battery.It is described
Connection sheet is set between battery core anode and explosion rupture disk, in normal battery operation from electric action, while consolidating in battery core is isolated
Body substance.The sealing ring forms a complete battery cap, plays sealing and insulation for sealing and fixing cap entirety
Effect；It prevents from connection sheet from dropping to simultaneously to cause internal short-circuit inside battery core, improve the safety of battery.The boss structure
It is fixedly connected with the explosion rupture disk, conduction when for normal battery operation；The fracture groove is used in battery operation irregularity,
When internal pressure increases, it is detached from the boss structure from connection sheet together with explosion rupture disk, connection sheet opens power-off.
Further, the boss structure is set in the middle part of the connection sheet, top surface and explosion rupture disk middle part are into battery core
The boss plane of portion's protrusion is fixedly connected；It is the arcuate structure to battery core internal protrusion in the middle part of the explosion rupture disk, can further increases
Spacing between big explosion rupture disk and top cover, increases the space of explosion rupture disk explosion, keeps burst pressure more stable.
Further, the area that the boss structure is fixedly connected with the explosion rupture disk is the 3/ of boss structure top surface area
, guarantee that boss structure and connection sheet have biggish attachment force, makes battery operation irregularity, when internal pressure increases, institute
Boss structure is stated to be detached from from connection sheet together with explosion rupture disk.
Further, the boss structure be frustum cone structure, battery operation irregularity, internal pressure increase when, circular cross-section
Frustum cone structure can make boss structure uniform force, make boss structure be detached from from connection sheet together with explosion rupture disk have it is uniform
Property, to effectively raise the explosion-proof stability of cap.To advanced optimize structure, boss structure top surface area is bottom surface face
Long-pending 7/10-9/10.
Further, it is described fracture groove depth be the connection sheet thickness 7/10-9/10, guarantee fracture groove with
Connection sheet has lesser attachment force, and battery operation irregularity when internal pressure increases, is further ensured that the boss structure can be with
Explosion rupture disk is detached from from connection sheet together.
The fracture groove is set to the junction of the boss structure and connection sheet, and is broken the connection of groove and connection sheet
Power is less than the attachment force of the boss structure and explosion rupture disk welding, and battery operation irregularity, when internal pressure increases, fracture groove is disconnected
It splits, the boss structure is detached from from connection sheet together with explosion rupture disk, forms a kind of novel power-off opening structure.And it is firm
Solder joint and fracture groove can effectively reduce the internal resistance of battery, while design relative to the overcurrent of only solder joint, overcurrent
Ability is stronger.
Further, the top cover is flat-top sun cap structure, and edge is equipped with ring-like through slot, and it is thick to form two-stage ladder
Degree；For being connected to external circuit in the middle part of the flat-top sun cap structure, and increase the spacing between top cover and explosion rupture disk, increases
The space of explosion rupture disk explosion, keeps burst pressure more stable；The ring-like through slot can effectively reduce the height of cap, increase battery
Inner space, while saving production cost.
Further, the thickness of the cage ring is less than or equal to the depth of the ring-like through slot, not only ensure that cap
Stability and leakproofness, and can effectively reduce the height of cap, increase the inner space of battery.The cage ring wraps up institute
The length for stating cap edge is less than or equal to the width of the ring-like through slot, and the length for wrapping up the explosion rupture disk edge is greater than or waits
In the width of the ring-like through slot, less than or equal to the length at the explosion rupture disk edge；Both the stabilization of cage ring package had been can guarantee
Property and leakproofness, and can increase the inner space of battery.
Further, binding structure and gas vent are additionally provided in the connection sheet；The binding structure is ring-like to be wrapped in institute
It states outside cage ring, and packages length is less than or equal to the width of the ring-like through slot.The binding structure is ring-like to be wrapped in institute
It states outside cage ring, is fallen into inside battery core after connection sheet and explosion rupture disk can be prevented to be detached from, the effective stability for improving connection sheet,
And good airproof performance, the probability of solution leakage can be substantially reduced, improves the safety of cap on the whole.The bound edge knot
The length that structure wraps up the cage ring is less than or equal to the width of the ring-like through slot, both can guarantee the stabilization of binding structure package
Property and leakproofness, and production cost can be saved.When the gas vent is used for explosion-proof, the gas that inside battery generates is from exhaust
Hole is passed through the space between explosion rupture disk and connection sheet, and is flipped up explosion rupture disk, after the rupture groove rupture in explosion rupture disk, electricity
Gas inside pond can be discharged by the foramen lacerum on gas vent and/or connection sheet, mitigated the pressure in battery, prevented battery
Explosion.
Further, the connection at the cap edge and the explosion rupture disk edge, the boss structure and the explosion rupture disk
Connection be laser welding.The connection at the cap edge and the explosion rupture disk edge is laser wire bonding, can be effectively reduced
The internal resistance of battery improves the overcurrent capability of battery.The connection of the boss structure and the explosion rupture disk is laser spot welding, and point
The region of weldering is the boss plane of boss structure top surface and explosion rupture disk to battery core internal protrusion, guarantees firm welding.
Further, the explosion rupture disk is equipped with rupture groove, makes battery operation irregularity, explosion-proof when internal pressure increases
Piece is easily rupturable, is convenient for battery pressure release.
The cylindrical lithium ion battery new type explosion proof cap of the utility model has the advantage that
1, the connection sheet in the utility model is equipped with boss structure and fracture groove, and is broken the attachment force of groove less than convex
The attachment force of platform structure and explosion rupture disk welding makes battery operation irregularity, when internal pressure increases, fracture groove fracture, and boss knot
Structure is detached from from connection sheet together with explosion rupture disk, forms a kind of novel power-off opening structure.
2, the connection of the boss structure of the utility model connection sheet and explosion rupture disk is laser spot welding, and firm welding, connection
The firm solder joint of on piece and fracture groove, can effectively reduce the internal resistance of battery, while the overcurrent relative to only solder joint is set
Meter, overcurrent sexuality are stronger.
3, the connection sheet in the utility model is equipped with binding structure, falls into battery core after connection sheet and explosion rupture disk can be prevented to be detached from
Inside, the effective stability for improving connection sheet, to promote the leakproofness and safety of cap entirety.
4, the connection at cap edge and explosion rupture disk edge is laser wire bonding in the utility model, is effectively reduced in battery
Resistance, improves the overcurrent capability of battery.
5, the edge of the ring-like package top cover and explosion rupture disk of cage ring in the utility model, both ensure that the steady of cap entirety
Qualitative and leakproofness, and increase the inner space of battery.
Detailed description of the invention
Fig. 1 is the overall structure diagram of cylindrical lithium ion battery new type explosion proof cap in the utility model；
Fig. 2 is the status diagram in the utility model after cylindrical lithium ion battery new type explosion proof cap explosion-proof；
The reference numerals are as follows:
1, top cover；101, annular through groove；2, explosion rupture disk；201, groove is ruptured；3, cage ring；4, connection sheet；401, boss
Structure；402, binding structure；403, gas vent；404, it is broken groove；5, sealing ring.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
Cylindrical lithium ion battery new type explosion proof cap in the embodiments of the present invention is as shown in attached drawing 1,2, including top
Lid 1, explosion rupture disk 2, cage ring 3, connection sheet 4 and sealing ring 5；Cap edge is connected with explosion rupture disk edge, the ring-like packet of cage ring
Wrap up in the edge of top cover and explosion rupture disk；Connection sheet be equipped with boss structure 401 and fracture groove 404, and by boss structure with it is explosion-proof
Piece is fixedly connected, and fracture groove is set to the junction of boss structure and connection sheet；Sealing ring is sheathed on connection sheet periphery.
Top cover is hard nickel plating round iron plate, in normal battery operation from conductive and supporting role, nickel plating help to mention
Inoxidizability and electric conductivity high, that stablize top cover.Explosion rupture disk is soft flake aluminum, in normal battery operation from conductive and sealing
Effect by inside battery open circuit, and when cell internal pressure is excessive, ruptures pressure release in time, guarantees when battery is abnormal
The safety of battery entirety.Cage ring is for improving the stability of cap and the anti-seismic performance of battery.Connection sheet is being set to battery core just
Between pole and explosion rupture disk, in normal battery operation from electric action, while the solid matter in battery core is isolated.Sealing ring is used for
Cap entirety is sealed and fixed, a complete battery cap is formed, plays the role of sealing and insulation；Connection sheet is prevented simultaneously
It drops to and causes internal short-circuit inside battery core, improve the safety of battery.Boss structure is fixedly connected with explosion rupture disk, is used for battery
Conduction when normal work；Groove is broken to be used to make boss structure and explosion rupture disk when internal pressure increases in battery operation irregularity
It is detached from from connection sheet together, connection sheet opens power-off.
Boss structure 401 is set in the middle part of connection sheet, is solid to the boss plane of battery core internal protrusion in the middle part of top surface and explosion rupture disk
Fixed connection；It is the arcuate structure to battery core internal protrusion in the middle part of explosion rupture disk, between can further increasing between explosion rupture disk and top cover
Away from, increase explosion rupture disk explosion space, keep burst pressure more stable.The area that boss structure is fixedly connected with explosion rupture disk is convex
The 3/4-9/10 of platform structure top surface area guarantees that boss structure and connection sheet have biggish attachment force, makes battery operation irregularity,
When internal pressure increases, boss structure is detached from from connection sheet together with explosion rupture disk.Boss structure is frustum cone structure, battery work
Abnormal, when internal pressure increases, the frustum cone structure of circular cross-section can make boss structure uniform force, make boss structure and explosion rupture disk
Being detached from from connection sheet together has uniformity, to effectively raise the explosion-proof stability of cap.To advanced optimize knot
Structure, boss structure top surface area are the 7/10-9/10 of base area.
The depth for being broken groove 404 is the 7/10-9/10 of connection sheet thickness, and it is smaller to guarantee that fracture groove and connection sheet have
Attachment force, battery operation irregularity, internal pressure increase when, be further ensured that boss structure can be together with explosion rupture disk from connection sheet
Upper disengaging.It is broken the junction that groove is set to boss structure and connection sheet, and is broken the attachment force of groove and connection sheet less than convex
The attachment force of platform structure and explosion rupture disk welding, battery operation irregularity, when internal pressure increases, fracture groove fracture, boss structure
It is detached from from connection sheet together with explosion rupture disk, forms a kind of novel power-off opening structure.And firm solder joint and fracture groove,
The internal resistance of battery can be effectively reduced, while being designed relative to the overcurrent of only solder joint, overcurrent sexuality is stronger.
Top cover is flat-top sun cap structure, and edge is equipped with ring-like through slot 101, forms two-stage step-thickness；The flat-top sun
For being connected to external circuit in the middle part of cap structure, and increase the spacing between top cover and explosion rupture disk, increases the sky of explosion rupture disk explosion
Between, keep burst pressure more stable；Ring-like through slot can effectively reduce the height of cap, increases the inner space of battery, saves simultaneously
Production cost.The thickness of cage ring is less than or equal to the depth of ring-like through slot, not only ensure that the stability and leakproofness of cap,
And can effectively reduce the height of cap, increase the inner space of battery.The length of cage ring package cap edge is less than or waits
In the width of ring-like through slot, the length for wrapping up explosion rupture disk edge is greater than or equal to the width of ring-like through slot, less than or equal to explosion-proof
The length at piece edge；Not only the stability and leakproofness of cage ring package can guarantee, but also can increase the inner space of battery.
Binding structure 402 and gas vent 403 are additionally provided in connection sheet；Binding structure is ring-like to be wrapped in outside cage ring, and
Packages length is less than or equal to the width of ring-like through slot.Binding structure is ring-like to be wrapped in outside cage ring, can prevent connection sheet with
Explosion rupture disk is fallen into inside battery core after being detached from, the effective stability for improving connection sheet, and good airproof performance, can substantially reduce electrolysis
The probability of liquid leakage, improves the safety of cap on the whole.The length that binding structure wraps up cage ring is less than or equal to ring
The width of type through slot, not only can guarantee the stability and leakproofness of binding structure package, but also can save production cost.Gas vent 403
When for explosion-proof, the gas that inside battery generates is passed through the space between explosion rupture disk and connection sheet from gas vent, and makes to prevent
Quick-fried is flipped up, and after the rupture groove rupture in explosion rupture disk, the gas of inside battery can be by gas vent 403 and/or connection sheet
On foramen lacerum discharge, mitigate battery in pressure, prevent battery explosion.
The connection of the connection at cap edge and explosion rupture disk edge, boss structure and explosion rupture disk is laser welding.Tip cap edge
The connection at edge and explosion rupture disk edge is laser wire bonding, can effectively reduce the internal resistance of battery, improve the overcurrent capability of battery.It is convex
The connection of platform structure and explosion rupture disk is laser spot welding, and the region of spot welding is that boss structure top surface and explosion rupture disk are convex to battery core inside
The boss plane risen guarantees firm welding.
Explosion rupture disk is equipped with rupture groove 201, makes battery operation irregularity, when internal pressure increases, explosion rupture disk is easily rupturable, just
In battery pressure release.
The specific embodiment of cylindrical lithium ion battery new type explosion proof cap in the embodiments of the present invention is as follows:
Embodiment 1:
The utility model cap 6pcs is taken to carry out internal resistance detection, detection data is as follows:
0.27 m Ω of 0.26m Ω 0.27m Ω 0.25 m Ω, 0.24 m Ω, 0.28 m Ω, mean value are 0.26m Ω.
Enchashment has cap 6pcs to carry out inner walkway, and detection data is as follows:
0.34 m Ω, 0.35 m Ω, 0.38 m Ω, 0.35 m Ω, 0.36 m Ω, 0.36 m Ω, mean value are 0.36 Ω.
To sum up data, the utility model can obviously reduce internal resistance, improve the overcurrent capability of battery.
Embodiment 2:
The power-off data for suppressing test are as follows:
The utility model mean value is 1.080MPa, minimum value 0.985MPa, maximum value 1.134MPa, very poor to be
0.149MPa。
Existing cap mean value is 0.994MPa, minimum value 0.904MPa, maximum value 1.157MPa, very poor to be
0.243MPa。
Data result shows that the pressure control of indentation power-off is more excellent.
Cylindrical lithium ion battery new type explosion proof cap in the embodiments of the present invention, connection sheet be equipped with boss structure and
It is broken groove, boss structure and explosion rupture disk are welded, and the attachment force for being broken groove and connection sheet is less than boss structure and explosion rupture disk
The attachment force of welding makes battery operation irregularity, and when internal pressure increases, fracture groove fracture, boss structure is together with explosion rupture disk
It is detached from from connection sheet, forms a kind of novel power-off opening structure.
Cap uses binding structure, the packet on edge and connection sheet including the ring-like package top cover of cage ring and explosion rupture disk
Side structure both ensure that the stability and leakproofness of cap entirety, and increase the inner space of battery；Can prevent again connection sheet with
Explosion rupture disk is fallen into inside battery core after being detached from, to promote the safety of cap entirety.
Connection between cap ring plate is all made of laser welding, and the connection at cap edge and explosion rupture disk edge is laser wire bonding,
The internal resistance that battery can be effectively reduced improves the overcurrent capability of battery；The connection of boss structure and explosion rupture disk is laser spot welding,
And firm welding, firm solder joint and fracture groove, can effectively reduce the internal resistance of battery, while relative to only in connection sheet
The overcurrent of solder joint designs, and overcurrent sexuality is stronger.
It can be seen that the utility model from the scheme of above-described embodiment and provide a kind of cylindrical lithium ion battery new type explosion proof
Cap effectively improves safety anti-explosive performance, the sealing performance of cap by novel binding structure and power-off opening structure
With overcurrent performance.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model embodiment rather than right
It is limited, although the utility model embodiment is described in detail referring to preferred embodiment, this field it is common
Technical staff should understand that still be modified or replaced equivalently the technical solution of the utility model embodiment, and this
A little ranges modified or equivalent replacement cannot also make modified technical solution be detached from the utility model embodiment technical solution.
Claims (9)
1. a kind of cylindrical lithium ion battery new type explosion proof cap, including top cover, explosion rupture disk, cage ring, connection sheet and sealing ring,
It is characterized in that:
The cap edge is connected with the explosion rupture disk edge, the side of cage ring ring-like the package top cover and explosion rupture disk
Edge；The connection sheet is equipped with boss structure and fracture groove, and is fixedly connected by the boss structure with the explosion rupture disk, institute
State the junction that fracture groove is set to the boss structure and connection sheet；The sealing ring is sheathed on the connection sheet periphery；
The boss structure is frustum cone structure, and top surface area is the 7/10-9/10 of base area.
2. cylindrical lithium ion battery new type explosion proof cap as described in claim 1, it is characterised in that: the boss structure is set to institute
It states in the middle part of connection sheet, top surface is fixedly connected in the middle part of the explosion rupture disk to the boss plane of battery core internal protrusion.
3. cylindrical lithium ion battery new type explosion proof cap as described in claim 1, it is characterised in that: the boss structure with it is described
The area that explosion rupture disk is fixedly connected is the 3/4-9/10 of boss structure top surface area.
4. cylindrical lithium ion battery new type explosion proof cap as described in claim 1, it is characterised in that: the depth of the fracture groove
For the 7/10-9/10 of the connection sheet thickness.
5. cylindrical lithium ion battery new type explosion proof cap as described in claim 1, it is characterised in that: the top cover is the flat-top sun
Cap structure, and edge is equipped with ring-like through slot, forms two-stage step-thickness.
6. cylindrical lithium ion battery new type explosion proof cap as claimed in claim 5, it is characterised in that: the thickness of the cage ring is small
In or equal to the ring-like through slot depth, wrap up the cap edge length be less than or equal to the ring-like through slot width
Degree, the length for wrapping up the explosion rupture disk edge are greater than or equal to the width of the ring-like through slot, are less than or equal to the explosion rupture disk
The length at edge.
7. cylindrical lithium ion battery new type explosion proof cap as claimed in claim 5, it is characterised in that: be additionally provided in the connection sheet
Binding structure and gas vent；The binding structure is ring-like to be wrapped in outside the cage ring, and packages length is less than or equal to institute
State the width of ring-like through slot.
8. cylindrical lithium ion battery new type explosion proof cap as described in claim 1, it is characterised in that: the cap edge with it is described
The connection of the connection at explosion rupture disk edge, the boss structure and the explosion rupture disk is laser welding.
9. cylindrical lithium ion battery new type explosion proof cap as described in claim 1, it is characterised in that: the explosion rupture disk is equipped with broken
Split groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969430.8U CN208538990U (en) | 2018-06-22 | 2018-06-22 | A kind of cylindrical lithium ion battery new type explosion proof cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969430.8U CN208538990U (en) | 2018-06-22 | 2018-06-22 | A kind of cylindrical lithium ion battery new type explosion proof cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208538990U true CN208538990U (en) | 2019-02-22 |
Family
ID=65392095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820969430.8U Active CN208538990U (en) | 2018-06-22 | 2018-06-22 | A kind of cylindrical lithium ion battery new type explosion proof cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208538990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312939A (en) * | 2020-03-27 | 2020-06-19 | 江苏芯界新能源科技有限公司 | Battery end cover with safety protection function |
-
2018
- 2018-06-22 CN CN201820969430.8U patent/CN208538990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312939A (en) * | 2020-03-27 | 2020-06-19 | 江苏芯界新能源科技有限公司 | Battery end cover with safety protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102136552B (en) | The manufacture method of battery protecting apparatus, battery and battery protecting apparatus | |
| KR101279994B1 (en) | Cap Assembly of Structure Having Safety Element on Electrode Lead and Cylindrical Battery Employed with the Same | |
| CN106030850B (en) | Cylinder-shaped enclosed cell | |
| KR101184403B1 (en) | Cap assembly and secondary battery using the same | |
| KR101236452B1 (en) | End cover assembly and lithium secondary battery having the same | |
| CN105070860B (en) | A kind of rechargeable battery | |
| CN105811013A (en) | High-rate anti-explosion lithium battery structure and fixing method for battery cell and steel shell | |
| CN203631651U (en) | Current cut-off device and aluminum-shell lithium ion battery with same | |
| CN101281957B (en) | Closing battery with explosion-proof function | |
| JP3188012U (en) | Lithium-ion battery safety device | |
| CN208225932U (en) | A kind of slim explosion-proof cap of cylindrical lithium ion battery | |
| CN205488385U (en) | Explosion -proof lithium cell structure of high magnification | |
| CN208538990U (en) | A kind of cylindrical lithium ion battery new type explosion proof cap | |
| CN207676956U (en) | Cylindrical lithium ion battery cap | |
| CN102544397B (en) | A kind of lithium rechargeable battery | |
| CN101304078B (en) | Explosion-proof battery | |
| CN209544507U (en) | A kind of column lithium ion battery | |
| CN217655973U (en) | Battery cover plate, battery and electric equipment | |
| CN208422973U (en) | A kind of cylindrical lithium battery cap suitable for thermal run away | |
| CN212392306U (en) | Annular battery | |
| CN104051781A (en) | Lithium ion power battery and method for manufacturing battery | |
| CN207611793U (en) | A kind of lithium ion battery cover and lithium ion battery | |
| CN210403784U (en) | Explosion-proof cap of cylinder lithium cell | |
| CN201946699U (en) | A lithium ion secondary battery | |
| CN208173737U (en) | A kind of novel nickel-hydrogen battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191022 Granted publication date: 20190222 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20221022 Granted publication date: 20190222 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221022 Granted publication date: 20190222 |