CN105810859B - Secondary battery top cap and secondary battery - Google Patents
Secondary battery top cap and secondary battery Download PDFInfo
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- CN105810859B CN105810859B CN201610351415.2A CN201610351415A CN105810859B CN 105810859 B CN105810859 B CN 105810859B CN 201610351415 A CN201610351415 A CN 201610351415A CN 105810859 B CN105810859 B CN 105810859B
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- fire
- retardant
- secondary cell
- box body
- explosion
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- 239000003063 flame retardant Substances 0.000 claims abstract description 86
- 239000000155 melt Substances 0.000 claims abstract description 5
- 238000000407 epitaxy Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 22
- 239000003792 electrolyte Substances 0.000 abstract description 13
- 230000008018 melting Effects 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract 2
- 241000220317 Rosa Species 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- -1 specifically Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Emergency Management (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Public Health (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to a secondary battery top cap and secondary battery, wherein, the secondary battery top cap includes the lamina tecti, explosion-proof valve and fire-retardant device, the explosion-proof hole has been seted up on the lamina tecti, explosion-proof valve sets up on the lamina tecti and sealed explosion-proof hole, fire-retardant device is located the below at the lamina tecti and corresponds the explosion-proof valve setting, leave exhaust passage between fire-retardant device and the explosion-proof valve, fire-retardant device includes fire-retardant box body and fire retardant, fire-retardant box body has the cavity, the fire retardant setting is in the cavity, when fire-retardant box body reaches the melting point, fire-retardant box body melts and releases the. The application provides a secondary cell top cap and secondary cell have the flame retardant device of fire retardant through the setting, and when the battery was unexpected and produced a large amount of gases and the temperature sharply rose because charge improper, short circuit, striking or expose in adverse circumstances such as high temperature, flame retardant device was heated and is melted and releases its built-in fire retardant to electric core inside to reduce the flammability of electrolyte, improved the security performance of battery.
Description
Technical field
The application is related to technical field of lithium ion, more particularly to a kind of can effectively improve the two of battery safety
Primary cell top cover and secondary cell.
Background technology
With the development and the enhancing of people's environmental consciousness of social economy, chargeable secondary cell is by increasing electricity
Device equipment elects power supply, such as electric tool, energy storage station and electric automobile as.This is the application and development of chargeable secondary cell
Provide wide space.Due to electric automobile and energy storage station etc. generally require lithium-ion-power cell using Large Copacity as
Power supply, but Large Copacity also implies that excessive risk.When battery is due to improper, short-circuit, shock or severe exposed to high temperature etc. of charging
When occurring unexpected in environment, the battery of high-energy will produce substantial amounts of gas and temperature drastically raises, a large amount of High Temperature Gas
Body carries out pressure release by explosion-proof valve, easily triggers second accident, the security performance of battery cannot get powerful guarantee, the life to people
Life safety belt greatly threatens.
Existing mainly used for the problem adds fire retardant in the electrolyte of battery, and fire retardant can reduce electrolysis
The combustibility of liquid, but directly can be negatively affected fire retardant addition to the chemical property of battery in the electrolytic solution, shadow
Ring the normal work of battery.Therefore, a kind of secondary cell that can effectively improve battery safety of exploitation is needed badly, it is existing to solve
There is above mentioned problem existing for technology.
The content of the invention
This application provides a kind of secondary cell top cover and secondary cell, and it, which is efficiently solved, directly exists fire retardant addition
The problem of secondary cell chemical property is influenceed in electrolyte.
This application provides a kind of secondary cell top cover, including lamina tecti, explosion-proof valve and fire-retarding device, the lamina tecti
On offer explosionproof hole, the explosion-proof valve is arranged on the lamina tecti and seals the explosionproof hole, and the fire-retarding device is located at
Set in the lower section of the lamina tecti and the corresponding explosion-proof valve, it is logical that exhaust is left between the fire-retarding device and the explosion-proof valve
Road, the fire-retarding device include fire-retardant box body and fire retardant, and the fire-retardant box body has cavity, and the fire retardant is arranged on described
In cavity, when the fire-retardant box body reaches fusing point, the fire-retardant box body melts and discharges the fire retardant.
Preferably, the bottom surface of the fire-retardant box body is provided with weak area, and the thickness of the weak area is less than described where it
The thickness of bottom surface.
Preferably, the weak area is the deep gouge being arranged on the bottom surface.
Preferably, the fire-retardant box body includes back box and lid, and the cavity is surrounded by the back box and the lid, and
The fire retardant is sealingly disposed in the cavity.
Preferably, the back box and the lid are integral type structure, and the fire-retardant box body also includes sealing-plug, the box
Cover and offer through hole, the sealing-plug seals the through hole.
Preferably, the lid also includes positioning convex, and the positioning convex is arranged on the lid towards the cavity
Side, and the edge of the corresponding cavity is set so that the lid passes through the positioning convex and positioned with the back box.
Preferably, the back box also includes epitaxy part, and the epitaxy part is by the edge of the back box along parallel to top cover
The direction of plate extends to be formed, and the epitaxy part is provided with passage.
Preferably, the epitaxy part is provided with hole clipping, and the lamina tecti is correspondingly arranged buckle, and the fire-retardant box body passes through institute
The cooperation for stating buckle and the hole clipping is fixed on the lamina tecti.
Preferably, in addition to liquid injection hole and boss, the liquid injection hole and the boss are set on the lamina tecti, described convex
Platform is arranged on the top of the lamina tecti around the explosionproof hole.
A kind of secondary cell, the secondary cell include battery core and above-mentioned secondary cell top cover.
The technical scheme that the application provides can reach following beneficial effect：
Secondary cell top cover provided herein and the secondary cell with the secondary cell top cover will be with fire retardants
Fire-retarding device be arranged on the lower section of explosion-proof valve, battery due to charge it is improper, short-circuit, hit or exposed to the severe ring such as high temperature
Occur unexpected in border and produce substantial amounts of gas and when temperature drastically raises, gas caused by inside battery core by explosion-proof valve and
When discharge, fire-retarding device melted by heat simultaneously discharges the fire retardant built in it to battery core, so as to reduce the flammable of electrolyte
Property, improve the security performance of battery.
It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited
Application.
Brief description of the drawings
The structural representation one that Fig. 1 is coordinated by the fire-retarding device that the embodiment of the present application provides with lamina tecti；
The structural representation two that Fig. 2 is coordinated by the fire-retarding device that the embodiment of the present application provides with lamina tecti；
The decomposing schematic representation figure that Fig. 3 is coordinated by the fire-retarding device that the embodiment of the present application provides with lamina tecti；
The structural representation for the fire-retarding device that Fig. 4 is provided by the embodiment of the present application；
The structural representation for the secondary cell that Fig. 5 is provided by the embodiment of the present application.
1st, battery core；2nd, battery cap；21st, lamina tecti；211st, explosionproof hole；212nd, buckle；22nd, explosion-proof valve；23rd, fire-retardant dress
Put；231st, fire-retardant box body；2311st, cavity；2312nd, weak area；2313rd, back box；2314th, lid；2314a, positioning convex；
2314b, epitaxy part；2314c, passage；2314d, hole clipping；2315th, sealing-plug；232nd, fire retardant；24th, exhaust passage；25th, note
Fluid apertures；26th, boss.
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
Embodiment
The application is described in further detail below by specific embodiment and with reference to accompanying drawing." preceding " in text,
" rear ", "left", "right", " on ", " under " using the laying state of the secondary cell top cover in accompanying drawing as reference.
Secondary cell can because charge it is improper, be shorted or exposed in the adverse circumstances such as high temperature and accident, while battery core 1 occur
Interior to produce substantial amounts of gas and temperature drastically raises, a large amount of high-temperature gases are carrying out pressure release by explosion-proof valve 22, easily draw
Send out second accident.In order to avoid the generation of second accident, prior art is more to be directly appended to fire retardant in the electrolyte of battery core 1
232, fire retardant 232 can effectively reduce the combustibility of electrolyte, improve the security performance of battery core 1, but directly in battery core 1
It is middle addition fire retardant 232 there is also it is larger the drawbacks of, the various complexity of the composition of fire retardant 232, directly added in the electrolytic solution
The chemical property of battery can be impacted, gas such as easily be produced under nominal situation environment, and then influence battery
Security performance.
Adverse effect of the fire retardant 232 to the chemical property of battery is directly added in the electrolytic solution in order to overcome, and is such as schemed
Shown in 1-5, this application provides a kind of secondary cell top cover 2, and it includes lamina tecti 21, explosion-proof valve 22 and fire-retarding device 23,
Explosionproof hole 211 is offered on lamina tecti 21, explosion-proof valve 22 is arranged on lamina tecti 21 and sealed explosion-proof hole 211, fire-retarding device 23
Set, fire-retardant and can enough can either be hindered in time when explosion-proof valve 22 is opened positioned in the lower section of lamina tecti 21 and corresponding explosion-proof valve 22
Mars caused by the inside of gear battery core 1 together sprays with gas, avoids triggering second accident, between fire-retarding device 23 and explosion-proof valve 22
Exhaust passage 24 is left, is easy to battery core 1 extremely to rush explosion-proof valve 22 by the release of exhaust passage 24 because of gas caused by temperature rise
Broken, the exhaust passage 24 is connected with the space of the lower section of explosion-proof valve 22, it is ensured that gas can be circulated to anti-by exhaust passage 24
The quick-fried lower section of valve 22, so as to discharge gas in time, avoid and hindered because fire-retarding device 23 stops explosion-proof valve 22 inside battery core 1 because of height
The circulation of gas caused by temperature is even discharged, and then the danger exploded.
The application can either effectively be stopped that and can is enough using positioned at resistance using fire-retarding device 23 to solid Mars particle
The structure high-efficiency exhaust of exhaust passage 24 between device 23 and explosion-proof valve 22 is fired, is reduced inside battery core 1 because of exhaust efficiency deficiency
Cause internal pressure rise to cause the risk of blast, improve the security performance of lithium ion battery.And fire-retarding device 23 is arranged on top
The space inside battery core 1 will not be taken on cover plate 21 because top cover and battery core 1 just need to leave in initial assembling it is certain away from
From therefore, the fire-retarding device 23 being arranged on top cover will not cause the energy density of battery to reduce, and fire-retarding device 23 includes fire-retardant
Box body 231 and fire retardant 232, fire-retardant box body 231 have cavity 2311, and fire retardant 232 is arranged in cavity 2311, fire retardant
232 are encapsulated in fire-retardant box body 231, are not directly appended in electrolyte, when fire-retardant box body 231 reaches fusing point, fire-retardant box
Body 231 melts and discharges fire retardant 232, thus in normal conditions, will not cause unfavorable shadow to the chemical property of battery
Ring, further increase the security performance of secondary cell.
Further, the bottom surface of the fire-retardant box body 231 of the application is provided with weak area 2312, and the thickness of weak area 2312 is less than
The thickness of bottom surface where it.When the temperature of battery core 1 be increased to the fusing point of fire-retardant box body 231 and explosion-proof valve 22 not by battery core 1 because
When gas caused by temperature rise breaks through, release fire retardant 232 is melted to the inside of battery core 1 in weak area 2312 first, wherein, it is thin
The preferred 0.05mm of thickness in weak area 2312, the preferred 0.1mm of thickness in other regions of fire-retardant box body 231, by setting weak area
2312, when the internal temperature of battery core 1 reaches the fusing point of fire-retardant box body 231, due to the more fire-retardant box body 231 of the thickness of weak area 2312
Other regions are thinner, and the fire retardant 232 built in it rapid melting and can be gradually released to by weak area 2312 in a short time
Inside battery core 1, weak area 2312 is evenly distributed on the bottom surface of fire-retardant box body 231 so that the release of electrolyte is more uniform, uniformly
The fire retardant 232 being discharged into electrolyte effectively reduces the combustibility of electrolyte, avoid secondary cell because of improper use and
Burning is even exploded.
Specifically, in this application, weak area 2312 is preferably arranged on the deep gouge on bottom surface.Deep gouge is simple in construction, just
Processed in making.
In one embodiment of the application, fire-retardant box body 231 includes back box 2313 and lid 2314, and cavity 2311 is the bottom of by
Box 2313 is surrounded with lid 2314, and fire retardant 232 is sealingly disposed in cavity 2311.Lid 2314 and back box 2313 can be with
Sealed by laser welding or ultrasonic bonding.
In another embodiment of the application, back box 2313 and lid 2314 are integral type structure, and fire-retardant box body 231 wraps
Sealing-plug 2315 is included, through hole is opened up on lid 2314, sealing-plug 2315 seals through hole.The fire-retardant box body 231 of integral structure adds
The convenient and to be packaged opening of work is smaller, and sealing effectiveness is more preferable.
For the ease of welding, the lid 2314 of the application also includes positioning convex 2314a, and positioning convex 2314a is arranged on
Lid 2314 is towards the side of cavity 2311, and the edge of respective chamber 2311 is set so that lid 2314 passes through positioning convex
2314a positions with back box 2313.Positioning convex 2314a props up the side of back box 2313 when lid 2314 is covered in back box 2313
Edge makes lid 2314 not to be moved with respect to back box 2313, and then realizes that lid 2314 and the matching of back box 2313 position.
Smoothly discharged for the ease of the internal gas of battery core 1, the back box 2313 of the application also includes epitaxy part 2314b, extension
Portion 2314b is extended along the direction parallel to lamina tecti 21 by the edge of back box 2313 and formed, and epitaxy part 2314b is provided with ventilation
Hole 2314c.Because the corresponding explosion-proof valve 22 of fire-retarding device 23 is set, gas after being discharged inside battery core 1 can also by with row
The passage 2314c discharges that gas passage 24 connects, the circulation path of gas is shortened, allows gas to enough quickly discharge.
For the ease of fire-retardant box body 231 is fixed on lamina tecti 21, the epitaxy part 2314b of the application is provided with hole clipping
2314d, lamina tecti 21 are correspondingly arranged buckle 212, and fire-retardant box body 231 is fixed on top by buckle 212 and hole clipping 2314d cooperation
On cover plate 21.
Because lamina tecti 21 is rectangle, width differs larger with length, and top cover is fixed on for the ease of fire-retardant box body 231
On plate 21, it is preferred that it is relative that the epitaxy part 2314b of the application can be arranged on cavity 2311 along the bearing of trend of lamina tecti 21
Both ends, hole clipping 2314d are arranged on epitaxy part 2314b, and the corresponding hole clipping 2314d of buckle 212 is arranged on lamina tecti 21, and court leans on
The direction extension of nearly battery core 1, the fire-retardant box body 231 of back box 2313 are fixed on lamina tecti by shackle member and hole clipping 2314d cooperation
Buckle 212 on 21.Fire-retardant box body 231 in the application can be not only fixedly connected by snap fit with lamina tecti 21, may be used also
To realize being fixedly connected for the two by other connected modes.
The melting range of the fire-retardant box body 231 of the application selects 80~150 DEG C, and the fusing point of fire-retardant box body 231 is less than electricity
Housing, the 21 isostructural fusing point of lamina tecti of core 1, when fire-retardant box body 231 reaches fusing point and melts, secondary cell its
Its structure still is able to keep its structure without melting.
The material of fire-retardant box body 231 can be plastics or low melting point metal material, specifically, fire-retardant box body 231 can be adopted
With polypropylene (PP), polystyrene (PS), polyphenylene sulfide (PPS) material.
In addition, the secondary cell of the application also includes liquid injection hole 25 and boss 26, liquid injection hole 25 and boss 26 set top cover
On plate 21, boss 26 is arranged on the top of lamina tecti 21 around explosionproof hole 211.The explosionproof hole 211 of 22 lamina tecti of explosion-proof valve 21 is explosion-proof
The battery core 1 of hole 211 boss, 26 explosionproof hole, 211 lamina tecti 21 is when secondary cell injects electrolyte by liquid injection hole 25, the electricity of outflow
Solve the possible explosion-proof valve 22 of liquid and corrode explosion-proof valve, the application blocks outflow electrolyte by the boss 26 being arranged on lamina tecti 21
Flow explosion-proof valve 22 and corrode explosion-proof valve 22, and the setting of the structure of boss 26 can also strengthen the intensity of lamina tecti 21.For the ease of
Explosion-proof valve 22 is broken through by gas, and indentation can also be set on explosion-proof valve 22.
Present invention also provides a kind of secondary cell with above-mentioned secondary cell top cover 2, the secondary cell will have resistance
The fire-retarding device 23 of combustion agent 232 is arranged on the lower section of explosion-proof valve 22, battery due to charge it is improper, short-circuit, hit or be exposed to
Occur unexpected in the adverse circumstances such as high temperature and produce substantial amounts of gas and when temperature drastically raises, gas caused by the inside of battery core 1
Body is discharged in time by explosion-proof valve 22, and the melted by heat of fire-retarding device 23 simultaneously discharges the fire retardant 232 built in it to battery core 1
Portion, so as to reduce the combustibility of electrolyte, improve the security performance of battery.
The preferred embodiment of the application is these are only, is not limited to the application, for those skilled in the art
For member, the application can have various modifications and variations.All any modifications within spirit herein and principle, made,
Equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of secondary cell top cover, it is characterised in that including lamina tecti, explosion-proof valve and fire-retarding device, on the lamina tecti
Explosionproof hole is offered, the explosion-proof valve is arranged on the lamina tecti and seals the explosionproof hole, and the fire-retarding device is located at
The lower section of the lamina tecti and the corresponding explosion-proof valve setting, it is logical to leave exhaust between the fire-retarding device and the explosion-proof valve
Road, the fire-retarding device include fire-retardant box body and fire retardant, and the fire-retardant box body has cavity, and the fire retardant is arranged on described
In cavity, when the fire-retardant box body reaches fusing point, the fire-retardant box body melts and discharges the fire retardant.
2. secondary cell top cover according to claim 1, it is characterised in that the bottom surface of the fire-retardant box body is provided with weakness
Area, the thickness of the weak area are less than the thickness of the bottom surface where it.
3. secondary cell top cover according to claim 2, it is characterised in that the weak area is to be arranged on the bottom surface
Deep gouge.
4. secondary cell top cover according to claim 1, it is characterised in that the fire-retardant box body includes back box and lid,
The cavity is surrounded by the back box and the lid, and the fire retardant is sealingly disposed in the cavity.
5. secondary cell top cover according to claim 4, it is characterised in that the back box and the lid are integral type knot
Structure, the fire-retardant box body also include sealing-plug, and through hole is offered on the lid, and the sealing-plug seals the through hole.
6. secondary cell top cover according to claim 4, it is characterised in that the lid also includes positioning convex, described
Positioning convex is arranged on the lid towards the side of the cavity, and the edge of the corresponding cavity is set so that the lid
Positioned by the positioning convex and the back box.
7. according to the secondary cell top cover described in claim any one of 4-6, it is characterised in that the back box also includes extension
Portion, the epitaxy part are extended along the direction parallel to lamina tecti by the edge of the back box and formed, and the epitaxy part is provided with
Passage.
8. secondary cell top cover according to claim 7, it is characterised in that the epitaxy part is provided with hole clipping, the top
Cover plate is correspondingly arranged buckle, and the fire-retardant box body is fixed on the lamina tecti by the cooperation of the buckle and the hole clipping.
9. secondary cell top cover according to claim 1, it is characterised in that also including liquid injection hole and boss, the fluid injection
Hole and the boss are set on the lamina tecti, and the boss is arranged on the top of the lamina tecti around the explosionproof hole.
10. a kind of secondary cell, it is characterised in that the secondary cell is included described in battery core and claim any one of 1-9
Secondary cell top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351415.2A CN105810859B (en) | 2016-05-24 | 2016-05-24 | Secondary battery top cap and secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351415.2A CN105810859B (en) | 2016-05-24 | 2016-05-24 | Secondary battery top cap and secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105810859A CN105810859A (en) | 2016-07-27 |
| CN105810859B true CN105810859B (en) | 2018-03-20 |
Family
ID=56452881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610351415.2A Active CN105810859B (en) | 2016-05-24 | 2016-05-24 | Secondary battery top cap and secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105810859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3890053B1 (en) * | 2018-12-28 | 2023-11-08 | Contemporary Amperex Technology Co., Limited | Battery pack |
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| CN106229176A (en) * | 2016-09-30 | 2016-12-14 | 朱佳音 | There is switch and the electrical equipment of the electrical equipment of heating |
| CN108666465A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | A kind of fire-retardant wrapper and its lithium ion battery |
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| CN116387714B (en) * | 2023-06-05 | 2023-08-25 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5108853A (en) * | 1990-12-20 | 1992-04-28 | Exide Corporation | Submersible and flame retardant battery vent plug |
| CN202855822U (en) * | 2012-09-22 | 2013-04-03 | 潘少白 | Flame self-extinguishing safety valve cover on battery safety valve |
| CN103500806A (en) * | 2013-10-17 | 2014-01-08 | 宁德新能源科技有限公司 | Capsule and lithium ion battery |
| CN203800093U (en) * | 2014-04-25 | 2014-08-27 | 宁德新能源科技有限公司 | Power battery top cover |
| CN205645910U (en) * | 2016-05-24 | 2016-10-12 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap and secondary cell |
-
2016
- 2016-05-24 CN CN201610351415.2A patent/CN105810859B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5108853A (en) * | 1990-12-20 | 1992-04-28 | Exide Corporation | Submersible and flame retardant battery vent plug |
| CN202855822U (en) * | 2012-09-22 | 2013-04-03 | 潘少白 | Flame self-extinguishing safety valve cover on battery safety valve |
| CN103500806A (en) * | 2013-10-17 | 2014-01-08 | 宁德新能源科技有限公司 | Capsule and lithium ion battery |
| CN203800093U (en) * | 2014-04-25 | 2014-08-27 | 宁德新能源科技有限公司 | Power battery top cover |
| CN205645910U (en) * | 2016-05-24 | 2016-10-12 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap and secondary cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3890053B1 (en) * | 2018-12-28 | 2023-11-08 | Contemporary Amperex Technology Co., Limited | Battery pack |
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| CN105810859A (en) | 2016-07-27 |
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Effective date of registration: 20190214 Address after: 213300 Room 416, Building C, 218 Hongkou Road, Kunlun Street, Liyang City, Changzhou City, Jiangsu Province (in Zhongguancun Science and Technology Industrial Park, Jiangsu Province) Patentee after: CONTEMPORARY AMPEREX TECHNOLOGY Ltd. (JIANGSU) Address before: 352100 Xingang Road, Zhangwan Town, Jiaocheng District, Ningde, Fujian 1 Patentee before: Contemporary Amperex Technology Co.,Ltd. |