CN206098512U - Pressure release structure of battery top cap - Google Patents
Pressure release structure of battery top cap Download PDFInfo
- Publication number
- CN206098512U CN206098512U CN201620880981.8U CN201620880981U CN206098512U CN 206098512 U CN206098512 U CN 206098512U CN 201620880981 U CN201620880981 U CN 201620880981U CN 206098512 U CN206098512 U CN 206098512U
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- movable plate
- valve body
- hole
- relief valve
- 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.)
- Expired - Fee Related
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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 relates to a battery top cap field discloses pressure release structure of battery top cap, including lapping and pressure relief valve body, pressure relief valve body forms on the apron, and pressure relief valve body's lower part is equipped with the through -hole, and pressure relief valve body's upper portion is equipped with and holds the chamber, holds the intracavity and is equipped with the movable plate, has the clearance between the periphery of movable plate and the lateral wall in appearance chamber, and pressure relief valve body's upper end is formed with the end cover, is equipped with the intercommunicating pore in intercommunication clearance in the end cover, is equipped with the spring between movable plate and the end cover. Compared with the prior art, when pressure in the battery is oversize, suppress gaseous upwards top movable plate, the movable plate rebound, then, spring compressed between movable plate and the end cover, the through -hole is opened, reveal in the space of the inside pressure of battery between through movable plate and through -hole, spill over along the lateral wall clearance, then it holds outside the chamber to pass through the intercommunicating pore discharge, internal pressure returns to normal when the battery, the spring homing of compression drives the movable plate return and covers the through -hole again, this kind of pressure release structure can reset by oneself, recycle.
Description
Technical field
This utility model is related to battery cap field, especially the pressure relief of battery cap.
Background technology
With electronic product increasingly miniaturization, portability, the utilization of battery are more and more extensive, this is because battery structure is simple
Single, easy to carry, discharge and recharge is easy to operation, is not affected by outside climatic and temperature, stable and reliable for performance, so existing
Very big effect is played for the various aspects in social life.
But battery is being used and in transportation, may produce short circuit phenomenon, and battery core heavy-current discharge is produced a large amount of
Heat, burn out barrier film, and cause bigger short circuit phenomenon, such battery core will produce high temperature, make electrolyte decomposition into gas, make
Excessive into internal pressure, when the shell of battery core cannot bear this pressure, battery will explode.
In prior art, rupture disk is set on battery cap, when cell internal pressure it is excessive, using rupture disk explosion come
Pressure release, it is to avoid battery explosion, but as rupture disk must be re-replaced after superpressure explosion, this blasting in once-through element
Self-resetting can not be realized, is used for multiple times.
Utility model content
The purpose of this utility model is the pressure relief for providing battery cap, it is intended to solve prior art borehole blasting element
It is unable to self-resetting nonexpondable problem.
This utility model is achieved in that the pressure relief of battery cap, including cover plate and pressure relief valve body, described to let out
Pressure valve body is formed on the cover plate, and the bottom of the pressure relief valve body is provided with through hole, and the top of the pressure relief valve body is provided with cavity volume,
The movable plate for closing the through hole upper end and move up and down, the periphery of the movable plate and the appearance are provided with the cavity volume
There is between the side wall in chamber gap, the upper end of the pressure relief valve body is formed with end cap, the gap is communicated with the end cap
Intercommunicating pore, be provided with spring between the movable plate and the end cap.
Further, the diameter with diameter greater than the through hole of the cavity volume, and shape between the cavity volume and the through hole
Into there is upwardly disposed first annular step.
Further, the first annular step is provided with the sealing ring compressed for the movable plate, the through hole it is upper
The hollow space of the end connection sealing ring.
Further, the cannelure of the through hole arrangement is provided around in the first annular step, the sealing ring
Lower end is convexly equipped with annular bar down, and the annular bar is embedded in the cannelure.
Further, the movable plate is in up-small and down-big shape, is formed with the second upwardly disposed ring-shaped step, the spring
Lower end be connected on second ring-shaped step, upper end is connected on the end cap.
Further, movable plate includes base plate and the jacking block being formed on the base plate, and the diameter of the jacking block is less than
The diameter of the base plate, second ring-shaped step are formed between the base plate and the jacking block, and the periphery of the base plate
There is and the side wall of the cavity volume between gap, the spring is set in the periphery of the jacking block.
Further, the intercommunicating pore is formed in the periphery of the end cap.
Further, the periphery of the end cap is provided with the breach towards sunken inside, and the medial wall of the breach is in arc-shaped cloth
Put, form cambered surface side wall, the side wall of the pressure relief valve body is formed with the embedded block being embedded in the breach, the intercommunicating pore shape
Into between the embedded block and breach.
Further, the embedded block forms flat sidewall, the company towards the cambered surface side wall of the breach in plane
Through hole is formed between cambered surface side wall and flat sidewall.
Further, installing hole is provided with the cover plate, the bottom closing of the pressure relief valve body is plugged in the installing hole
In.
Compared with prior art, pressure relief valve body is formed with the cover board, when cell internal pressure is excessive, suppress by pressure release
The through hole of valve body lower portion, pushes up upwards and is sealed on above through hole and movable plate moving up and down, the power pushed up upwards by movable plate
After move up, now the spring between movable plate and end cap is compressed, and movable plate is moved up, and through hole is opened, in battery
The pressure in portion is revealed by the space between movable plate and through hole, and between also having between the side wall of the periphery of movable plate and cavity volume
Gap, so gas can be overflowed along sidewall spacers, is then discharged outside cavity volume by the intercommunicating pore in end cap, works as gas overflowing, electricity
Pond internal pressure recovers normal, and the spring reset of compression drives movable plate return and covers again through hole, this pressure relief
Can be recycled with self-resetting.
Description of the drawings
Fig. 1 is the schematic diagram of the pressure relief of the battery cap that this utility model is provided；
Fig. 2 is the schematic diagram of the pressure relief of the battery cap that this utility model is provided；
Fig. 3 is the partial enlarged drawing of part A in Fig. 1；
Fig. 4 is the partial enlarged drawing of part B in Fig. 2.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain
This utility model, is not used to limit this utility model.
Realization of the present utility model is described in detail below in conjunction with specific embodiment.
With reference to shown in Fig. 1～4, preferred embodiment is provided for this utility model.
The pressure relief of the battery cap that this utility model is provided can be used on battery cap, it is also possible to be used in which
During he needs the device of overpressure relief, it is not limited in one of which.
The pressure relief of battery cap, including cover plate 12 and pressure relief valve body 11, pressure relief valve body 11 are formed on cover plate 12,
The bottom of pressure relief valve body 11 is provided with through hole 101, and the top of pressure relief valve body 11 is provided with cavity volume, is provided with for closing through hole in cavity volume
101 upper ends and the movable plate 102 for moving up and down, have gap, pressure relief valve body between the periphery of movable plate 102 and the side wall of cavity volume
11 upper end is formed with end cap 105, is communicated with the intercommunicating pore 104 in gap, between movable plate 102 and end cap 105 in end cap 105
It is provided with spring 103.
Specifically, pressure relief valve body 11 is formed with cover plate 12, be provided with cavity volume on the top of pressure relief valve body 11, set in cavity volume
There is movable plate moving up and down 102, movable plate 102 is in 101 upper end of closing through hole, when movable plate 102 is moved up, movable plate
Gap can be formed between 102 and through hole 101, and, also there is between the periphery of movable plate 102 and the side wall of cavity volume gap,
Gap in cavity volume is connected with the intercommunicating pore 104 on 11 end cap 105 of pressure relief valve body, so, the gas of inside battery can be logical with Jing
Gap between hole 101 and movable plate 102 is spilt in the gap of movable plate 102 and cavity volume side wall, finally by end cap 105
Intercommunicating pore 104 discharge pressure relief valve body 11 outside；Additionally, spring 103, movable plate are provided between movable plate 102 and end cap 105
102 springs 103 when moving up are compressed, and are formed with gap, beneficial to inside battery gas between movable plate 102 and through hole 101
Discharge.
When cell internal pressure is excessive, through hole 101 of the gas by 11 bottom of pressure relief valve body is suppressed, top is sealed on logical upwards
Movable plate 102 above hole 101, moves up after the power pushed up upwards by movable plate 102, and spring 103 is compressed, movable plate
102 move up, and through hole 101 is opened, and the gas of inside battery is by the space between movable plate 102 and through hole 101 to four
Week reveals, and overflows then along sidewall spacers, discharges outside pressure relief valve body 11 finally by the intercommunicating pore 104 in end cap 105, works as gas
After body overflows, inside battery pressure recovers normal, and the spring 103 for being compressed resets downwards, drives movable plate 102 to move down back
Position simultaneously covers through hole 101 again.
When the pressure value of inside battery exceedes the pressure of normal work, pressure relief valve body 11 can automatically open up pressure release, pressure release
After the completion of, when the pressure value of inside battery is reduced to normal value, pressure relief valve body 11 can be automatically switched off and cover through hole 101, this
The pressure relief of battery cap can ensure that inside battery will not occur explosion accident because pressure is excessive, and can be voluntarily
Reset, recycle.
The diameter of cavity volume is arranged into the diameter more than through hole 101, and is formed between cavity volume and through hole 101 upwardly disposed
First annular step, the movable plate 102 in cavity volume just can cover through hole 101 completely, be also beneficial to cavity volume side wall and movement
The gap that supplied gas are overflowed is formed between plate 102.
Sealing ring 106 is provided with first annular step, movable plate 102 covers through hole 101 and is pressed on sealing ring 106
On, when inside battery normal operation, movable plate 102 is connected on sealing ring 106, seals up through hole 101, so as to ensure the external world
Impurity will not via through holes 101 enter into inside battery, the hollow space of the upper end communication seals ring 106 of through hole 101, i.e. sealing ring
106 upper ends for being set in through hole 101, sealing ring 106 are arranged in first annular step the fixation for being conducive to sealing ring 106, keep away
Exempt from sealing ring 106 to move on through hole 101.
The cannelure 108 of the arrangement of through hole 101, the lower end projection down of sealing ring 106 are provided around in first annular step
There is annular bar 107, when sealing ring 106 is set in the upper end of through hole 101, the annular bar 107 on sealing ring 106 is embedded in the first ring
In the cannelure 108 of shape step, so as to further fix sealing ring 106, it is to avoid sealing ring 106 with movable plate 102 to
Upper shifting.When suppressing gas and backing down movable plate 102, sealing ring 106 is remained stationary as, and movable plate 102 is moved up, and opens through hole
101, so that movable plate 102 and sealing ring 106 depart from abuts, gas is easy between the two in formation space between the two
Overflow in space.
In the present embodiment, movable plate 102 is in up-small and down-big shape, is formed with the second upwardly disposed ring-shaped step, spring 103
Lower end be connected on the second ring-shaped step, upper end is connected on end cap 105, during inside battery normal work, 102 envelope of movable plate
Through hole 101 is covered, spring 103 in the raw, when inside battery pressure is excessive needs pressure release, is suppressed gas and pushes up shifting upwards
Dynamic plate 102, movable plate 102 are moved up, as 103 upper end of spring is connected on immovable fixed end cap 105, the second ring
Shape step supports spring 103 upwards, and spring 103 compressed, and moves on movable plate 102, and through hole 101 is opened pressure release.
Movable plate 102 includes base plate and the jacking block being formed on base plate, the diameter of the diameter of jacking block less than base plate, second
Ring-shaped step is formed between base plate and jacking block, has gap between the periphery of base plate and the side wall of cavity volume, straight due to jacking block
Diameter of the footpath less than base plate, the gap being also formed between jacking block and the side wall of cavity volume between gap, and jacking block are more than base plate
Between gap, spring 103 is set in the periphery of jacking block, and the upper end of spring 103 is pressed on end cap 105, the lower end of spring 103
It is pressed on base plate.
Intercommunicating pore 104 in end cap 105 for connecting cavity volume gap is formed in the periphery of end cap 105, due in cavity volume
Gap is formed between chamber wall and movable plate 102, so, intercommunicating pore 104 is arranged on 105 periphery of end cap and is conducive to and cavity volume
Interior gap connection.
The breach 111 towards sunken inside is provided with the periphery of end cap 105, the medial wall of breach 111 is arranged in arc-shaped, formed
Cambered surface side wall 113, is formed with embedded block 109 in the top sidewall of pressure relief valve body 11, embedded block 109 is embedded in breach 111, shape
Into the sealing of whole pressure relief, and the intercommunicating pore 104 for being used for aerofluxuss is formed between embedded block 109 and breach 111.
Specifically, embedded block 109 forms flat sidewall 112, is embedded in towards the cambered surface side wall 113 of breach 111 in plane
When block 109 is embedded in breach 111, space between flat sidewall 112 and cambered surface side wall 113, can be formed with, intercommunicating pore 104 is formed in
In space between cambered surface side wall 113 and flat sidewall 112.
Installing hole 110 is provided with cover plate 12, the bottom closing of pressure relief valve body 11 is plugged in installing hole 110, will be whole
Pressure relief valve body 11 is arranged on cover plate 12 so as to realize the pressure release to battery cap.Pressure relief valve body 11 can be by installing hole
With 12 integrated molding of cover plate during 110 are installed to cover plate 12, or in the manufacturing.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (10)
1. the pressure relief of battery cap, it is characterised in that including cover plate and pressure relief valve body, the pressure relief valve body is formed in institute
State on cover plate, the bottom of the pressure relief valve body is provided with through hole, and the top of the pressure relief valve body is provided with cavity volume, is provided with the cavity volume
For having between the side wall of the movable plate for closing the through hole upper end and move up and down, the periphery of the movable plate and the cavity volume
The upper end for having gap, the pressure relief valve body is formed with end cap, and the intercommunicating pore in the gap, the shifting are communicated with the end cap
Spring is provided between dynamic plate and the end cap.
2. the pressure relief of battery cap as claimed in claim 1, it is characterised in that the cavity volume it is logical with diameter greater than described
Upwardly disposed first annular step is formed between the diameter in hole, and the cavity volume and the through hole.
3. the pressure relief of battery cap as claimed in claim 2, it is characterised in that the first annular step is provided with confession
The sealing ring that the movable plate is compressed, the upper end of the through hole connect the hollow space of the sealing ring.
4. the pressure relief of battery cap as claimed in claim 2, it is characterised in that be provided with ring in the first annular step
Around the cannelure of through hole arrangement, the lower end of the sealing ring is convexly equipped with annular bar down, and the annular bar is embedded in described
In cannelure.
5. the pressure relief of battery cap as claimed in claim 1, it is characterised in that the movable plate is in up-small and down-big shape,
The second upwardly disposed ring-shaped step is formed with, the lower end of the spring is connected on second ring-shaped step, upper end abuts
On the end cap.
6. the pressure relief of battery cap as claimed in claim 5, it is characterised in that movable plate includes base plate and is formed in
Jacking block on the base plate, the diameter of the jacking block are less than the diameter of the base plate, and second ring-shaped step is formed in described
Between base plate and the jacking block, and there is between the side wall of the periphery of the base plate and the cavity volume gap, the spring is arranged
In the periphery of the jacking block.
7. the pressure relief of battery cap as claimed in claim 1, it is characterised in that the intercommunicating pore is formed in the end cap
Periphery.
8. the pressure relief of battery cap as claimed in claim 1, it is characterised in that the periphery of the end cap is provided with inwardly
The breach of depression, the medial wall of the breach arrange that in arc-shaped form cambered surface side wall, the side wall of the pressure relief valve body is formed with
The embedded block being embedded in the breach, the intercommunicating pore are formed between the embedded block and breach.
9. the pressure relief of battery cap as claimed in claim 1, it is characterised in that the embedded block is towards the breach
Cambered surface side wall forms flat sidewall in plane, and the intercommunicating pore is formed between cambered surface side wall and flat sidewall.
10. the pressure relief of battery cap as claimed in claim 1, it is characterised in that installing hole, institute are provided with the cover plate
The bottom closing for stating pressure relief valve body is plugged in the installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620880981.8U CN206098512U (en) | 2016-08-15 | 2016-08-15 | Pressure release structure of battery top cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620880981.8U CN206098512U (en) | 2016-08-15 | 2016-08-15 | Pressure release structure of battery top cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206098512U true CN206098512U (en) | 2017-04-12 |
Family
ID=58468250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620880981.8U Expired - Fee Related CN206098512U (en) | 2016-08-15 | 2016-08-15 | Pressure release structure of battery top cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206098512U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109976440A (en) * | 2017-12-28 | 2019-07-05 | 沈阳新松机器人自动化股份有限公司 | A kind of medical control |
| CN110021727A (en) * | 2018-01-10 | 2019-07-16 | 宁德时代新能源科技股份有限公司 | One-way vent valve, secondary battery's top cap subassembly and secondary battery |
-
2016
- 2016-08-15 CN CN201620880981.8U patent/CN206098512U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109976440A (en) * | 2017-12-28 | 2019-07-05 | 沈阳新松机器人自动化股份有限公司 | A kind of medical control |
| CN110021727A (en) * | 2018-01-10 | 2019-07-16 | 宁德时代新能源科技股份有限公司 | One-way vent valve, secondary battery's top cap subassembly and secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20190815 |