CN106058121B - The pressure relief of battery cap - Google Patents
The pressure relief of battery cap Download PDFInfo
- Publication number
- CN106058121B CN106058121B CN201610671495.XA CN201610671495A CN106058121B CN 106058121 B CN106058121 B CN 106058121B CN 201610671495 A CN201610671495 A CN 201610671495A CN 106058121 B CN106058121 B CN 106058121B
- 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.)
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- 239000011148 porous material Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 21
- 239000011796 hollow space material Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
-
- 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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The present invention relates to battery cap fields, disclose the pressure relief of battery cap, including cover board and pressure relief valve body, pressure relief valve body is formed on the cover board, and the lower part of pressure relief valve body is equipped with through-hole, the top of pressure relief valve body is equipped with cavity, it is equipped with movable plate in cavity, there is gap between the periphery of movable plate and the side wall of cavity, the upper end of pressure relief valve body is formed with end cap, it is equipped with the intercommunicating pore of communication gap in end cap, spring is equipped between movable plate and end cap.Compared with prior art, when cell internal pressure is excessive, it suppresses gas and pushes up movable plate upwards, movable plate moves up, at this time, spring between movable plate and end cap is compressed, through-hole is opened, the pressure of inside battery is overflowed along sidewall spacers, is then discharged outside cavity by intercommunicating pore by the gap leakage between movable plate and through-hole, when inside battery pressure restores normal, the spring reset of compression drives movable plate return and covers through-hole again, and this pressure relief can be recycled with self-resetting.
Description
Technical field
The present invention relates to the pressure reliefs of battery cap field, especially battery cap.
Background technique
As electronic product increasingly minimizes, portability, battery with more and more extensive, this is because battery structure is simple
Single, easy to carry, charge and discharge are easy to operation, do not influenced 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 using and in transportational process, may generate short circuit phenomenon, battery core heavy-current discharge generates a large amount of
Heat, burn out diaphragm, and cause bigger short circuit phenomenon, such battery core will generate high temperature, make electrolyte decomposition at gas
Excessive at internal pressure, when this unbearable pressure of the shell of battery core, battery will explode.
In the prior art, rupture disk is set on battery cap, when cell internal pressure is excessive, using rupture disk explosion come
Pressure release avoids battery explosion, but since rupture disk must re-replace after superpressure explosion, this blasting in once-through element
It can not achieve self-resetting, be used for multiple times.
Summary of the invention
The purpose of the present invention is to provide the pressure reliefs of battery cap, it is intended to which rupture element cannot in the prior art for solution
Self-resetting and the problem of be used for multiple times.
The invention is realized in this way the pressure relief of battery cap, including cover board and pressure relief valve body, the relief valve
Body is formed on the cover board, and the lower part of the pressure relief valve body is equipped with through-hole, and the top of the pressure relief valve body is equipped with cavity, described
The movable plate for closing the through-hole upper end and moving up and down, the periphery of the movable plate and the cavity are equipped in cavity
There is gap, the upper end of the pressure relief valve body is formed with end cap, is equipped with the company for being connected to the gap in the end cap between side wall
Through-hole is equipped with spring between the movable plate and the end cap.
Further, the diameter of the cavity is greater than the diameter of the through-hole, and shape between the cavity and the through-hole
At there is upwardly disposed first annular step.
Further, the first annular step is equipped with the sealing ring compressed for the movable plate, the through-hole it is upper
End is connected to the hollow space of the sealing ring.
Further, the annular groove around through-hole arrangement is equipped in the first annular step, the sealing ring
Lower end is convexly equipped with annular bar downward, and the annular bar is embedded in the annular groove.
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 bottom plate and the jacking block that is formed on the bottom plate, and the diameter of the jacking block is less than
The diameter of the bottom plate, second ring-shaped step is formed between the bottom plate and the jacking block, and the periphery of the bottom plate
There is gap between the side wall of the cavity, 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 equipped with the notch towards sunken inside, and the inner sidewall of the notch is in arc-shaped cloth
It sets, forms cambered surface side wall, the side wall of the pressure relief valve body is formed with the embedded block being embedded in the notch, the intercommunicating pore shape
At between the embedded block and notch.
Further, the embedded block is towards the cambered surface side wall of the notch in planar, formation flat sidewall, the company
Through-hole is formed between the cambered surface side wall and flat sidewall.
Further, mounting hole is equipped in the cover board, the lower part closing of the pressure relief valve body is plugged in the mounting hole
In.
Compared with prior art, it is formed with pressure relief valve body on the cover board, when cell internal pressure is excessive, suppresses and passes through pressure release
The through-hole of valve body lower portion, top is sealed on through-hole top and movable plate moving up and down, the power that movable plate is pushed up upwards upwards
After move up, the spring between movable plate and end cap is compressed at this time, and movable plate moves up, and through-hole is opened, in battery
The pressure in portion is revealed by the gap between movable plate and through-hole, and between also having between the periphery of movable plate and the side wall of cavity
Then gap is discharged outside cavity by the intercommunicating pore in end cap so gas can be overflowed along sidewall spacers, works as gas overflowing, electricity
Pond internal pressure restores normal, and the spring reset of compression drives movable plate return and covers through-hole, this pressure relief again
It can be recycled with self-resetting.
Detailed description of the invention
Fig. 1 is the schematic diagram of the pressure relief of battery cap provided by the invention；
Fig. 2 is the schematic diagram of the pressure relief of battery cap provided by the invention；
Fig. 3 is the partial enlarged view of part A in Fig. 1；
Fig. 4 is the partial enlarged view of part B in Fig. 2.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Realization of the invention is described in detail below in conjunction with specific embodiment.
Shown in referring to Fig.1~4, preferred embodiment is provided for the present invention.
The pressure relief of battery cap provided by the invention can be used on battery cap, and can also be used in other needs
It wants in the device of overpressure relief, is not limited in one of which.
The pressure relief of battery cap, including cover board 12 and pressure relief valve body 11, pressure relief valve body 11 are formed on cover board 12,
The lower part of pressure relief valve body 11 is equipped with through-hole 101, and the top of pressure relief valve body 11 is equipped with cavity, is equipped in cavity for closing through-hole
101 upper ends and the movable plate 102 moved up and down have gap, pressure relief valve body between the periphery of movable plate 102 and the side wall of cavity
11 upper end is formed with end cap 105, the intercommunicating pore 104 of communication gap is equipped in end cap 105, between movable plate 102 and end cap 105
Equipped with spring 103.
Specifically, it is formed with pressure relief valve body 11 on cover board 12, is equipped with cavity on the top of pressure relief valve body 11, is set in cavity
There is movable plate 102 moving up and down, movable plate 102 is in closing 101 upper end of through-hole, when movable plate 102 moves up, movable plate
It will form gap between 102 and through-hole 101, moreover, also there is gap between the periphery of movable plate 102 and the side wall of cavity,
Gap in cavity is connected to the intercommunicating pore 104 on 11 end cap 105 of pressure relief valve body, so, the gas of inside battery can be through logical
Gap between hole 101 and movable plate 102 is spilt into the gap of movable plate 102 and cavity side wall, finally by end cap 105
Intercommunicating pore 104 be discharged pressure relief valve body 11 outside；In addition, being provided with spring 103, movable plate between movable plate 102 and end cap 105
102 springs 103 when moving up are compressed, and are formed with gap between movable plate 102 and through-hole 101, are conducive to inside battery gas
Discharge.
When cell internal pressure is excessive, the through-hole 101 that gas passes through 11 lower part of pressure relief valve body is suppressed, top is sealed on logical upwards
The movable plate 102 of the top of hole 101 moves up after the power that movable plate 102 is pushed up upwards, and spring 103 is compressed, movable plate
102 move up, and through-hole 101 is opened, and the gas of inside battery passes through the gap between movable plate 102 and through-hole 101 to four
Week leakage, overflows then along sidewall spacers, is discharged 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 restores normal, and compressed spring 103 resets downwards, and movable plate 102 is driven to move down back
Position simultaneously covers through-hole 101 again.
When the pressure value of inside battery is more than the pressure worked normally, pressure relief valve body 11 can automatically open pressure release, pressure release
After the completion, when the pressure value of inside battery is reduced to normal value, pressure relief valve body 11, which can be automatically closed, covers through-hole 101, this
The pressure relief of battery cap can guarantee that because pressure is excessive explosion accident will not occur for inside battery, and can be voluntarily
It resets, is recycled.
The diameter setting of cavity is greater than the diameter of through-hole 101, and is formed between cavity and through-hole 101 upwardly disposed
First annular step, the movable plate 102 in cavity can cover through-hole 101 completely, be also beneficial to cavity side wall and movement
The gap that supplied gas is overflowed is formed between plate 102.
Sealing ring 106 is equipped in 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, through-hole 101 is sealed up, to guarantee the external world
Impurity will not via through holes 101 enter inside battery, the hollow space of the upper end communication seals ring 106 of through-hole 101, i.e. sealing ring
106 are set in the upper end of through-hole 101, and sealing ring 106 is arranged in the fixation for being conducive to sealing ring 106 in first annular step, keeps away
Exempt from sealing ring 106 to move on through-hole 101.
The annular groove 108 arranged around through-hole 101, the projection downward of the lower end of sealing ring 106 are equipped 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 annular groove 108 of shape step, to further fix sealing ring 106, avoid sealing ring 106 with movable plate 102 to
It moves up.When suppressing gas and opening movable plate 102, sealing ring 106 is remained stationary, and movable plate 102 moves up, and opens through-hole
101, so that the disengaging of movable plate 102 and sealing ring 106 abuts, gap is formed between the two and is convenient for gas between the two
It is overflowed in gap.
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, inside battery work normally when, 102 envelope of movable plate
Through-hole 101 is covered, spring 103 in the raw, when inside battery pressure is excessive needs pressure release, suppresses gas and pushes up shifting upwards
Movable plate 102, movable plate 102 move up, since 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 is compressed, and movable plate 102 moves up, and through-hole 101 is opened pressure release.
Movable plate 102 includes bottom plate and the jacking block that is formed on bottom plate, and the diameter of jacking block is less than the diameter of bottom plate, and second
Ring-shaped step is formed between bottom plate and jacking block, has gap between the periphery of bottom plate and the side wall of cavity, straight due to jacking block
Diameter is less than the diameter of bottom plate, and gap is also formed between jacking block and the side wall of cavity, and the gap between jacking block is greater than bottom 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 bottom plate.
The periphery for being formed in end cap 105 for being connected to the intercommunicating pore 104 in cavity gap in end cap 105, due in cavity
Gap is formed between chamber wall and movable plate 102, so, the setting of intercommunicating pore 104 is conducive to and cavity in 105 periphery of end cap
Interior gap connection.
It is equipped with the notch 111 towards sunken inside in the periphery of end cap 105, the inner sidewall of notch 111 is arranged in arc-shaped, is formed
Cambered surface side wall 113 is formed with embedded block 109 in the top sidewall of pressure relief valve body 11, and embedded block 109 is embedded in notch 111, shape
At the sealing of entire pressure relief, and the intercommunicating pore 104 for being used to be vented is formed between embedded block 109 and notch 111.
Specifically, embedded block 109 is towards the cambered surface side wall 113 of notch 111 in planar, formation flat sidewall 112, insertion
When block 109 is embedded in notch 111, gap will form between flat sidewall 112 and cambered surface side wall 113, intercommunicating pore 104 is formed in
In gap between cambered surface side wall 113 and flat sidewall 112.
Mounting hole 110 is equipped in cover board 12, the lower part closing of pressure relief valve body 11 is plugged in mounting hole 110, will be entire
Pressure relief valve body 11 is mounted on the pressure release realized on cover board 12 to battery cap.Pressure relief valve body 11, which can be, passes through mounting hole
110 are installed in cover board 12, are also possible in the manufacturing and 12 integrated molding of cover board.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. the pressure relief of battery cap, which is characterized in that including cover board and pressure relief valve body, the pressure relief valve body is formed in institute
It states on cover board, the lower part of the pressure relief valve body is equipped with through-hole, and the top of the pressure relief valve body is equipped with cavity, is equipped in the cavity
Movable plate for closing the through-hole upper end and moving up and down, has between the periphery of the movable plate and the side wall of the cavity
There is gap, the upper end of the pressure relief valve body is formed with end cap, is equipped with the intercommunicating pore for being connected to the gap, the shifting in the end cap
Spring is equipped between movable plate and the end cap；The diameter of the cavity be greater than the through-hole diameter, and the cavity with it is described
Upwardly disposed first annular step is formed between through-hole, the first annular step is equipped with what the confession movable plate compressed
Sealing ring, the upper end of the through-hole are connected to the hollow space of the sealing ring, are equipped in the first annular step around described
The annular groove of through-hole arrangement, the lower end of the sealing ring are convexly equipped with annular bar downward, and the annular bar is embedded in the annular groove
In.
2. the pressure relief of battery cap as described in claim 1, which is characterized in that the movable plate is in up-small and down-big shape,
It is formed with the second upwardly disposed ring-shaped step, the lower end of the spring is connected on second ring-shaped step, and upper end abuts
On the end cap.
3. the pressure relief of battery cap as claimed in claim 2, which is characterized in that movable plate includes bottom plate and is formed in
Jacking block on the bottom plate, the diameter of the jacking block are less than the diameter of the bottom plate, and second ring-shaped step is formed in described
Between bottom plate and the jacking block, and there is gap between the periphery of the bottom plate and the side wall of the cavity, the spring is arranged
In the periphery of the jacking block.
4. the pressure relief of battery cap as described in claim 1, which is characterized in that the intercommunicating pore is formed in the end cap
Periphery.
5. the pressure relief of battery cap as described in claim 1, which is characterized in that the periphery of the end cap is equipped with towards indent
The inner sidewall of sunken notch, the notch is arranged in arc-shaped, forms cambered surface side wall, the side wall of the pressure relief valve body is formed with embedding
Enter the embedded block in the notch, the intercommunicating pore is formed between the embedded block and notch.
6. the pressure relief of battery cap as claimed in claim 5, which is characterized in that the embedded block is towards the notch
Cambered surface side wall forms flat sidewall in planar, and the intercommunicating pore is formed between the cambered surface side wall and flat sidewall.
7. the pressure relief of battery cap as described in claim 1, which is characterized in that be equipped with mounting hole, institute in the cover board
The lower part closing for stating pressure relief valve body is plugged in the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671495.XA CN106058121B (en) | 2016-08-15 | 2016-08-15 | The pressure relief of battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671495.XA CN106058121B (en) | 2016-08-15 | 2016-08-15 | The pressure relief of battery cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106058121A CN106058121A (en) | 2016-10-26 |
| CN106058121B true CN106058121B (en) | 2019-01-29 |
Family
ID=57482040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610671495.XA Active CN106058121B (en) | 2016-08-15 | 2016-08-15 | The pressure relief of battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106058121B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732283A (en) * | 2017-11-10 | 2018-02-23 | 赵恒祥 | A kind of battery and its relief valve |
| CN110379977A (en) * | 2019-08-07 | 2019-10-25 | 中山市润烨新能源科技有限公司 | With self-relieving power battery structure part |
| CN110391381A (en) * | 2019-08-07 | 2019-10-29 | 中山市润烨新能源科技有限公司 | Power battery structure part with manual pressure release |
| CN110718670A (en) * | 2019-10-15 | 2020-01-21 | 盐城维实新能源科技有限公司 | Automatic liquid feeding car of battery |
| CN113948814A (en) * | 2021-09-11 | 2022-01-18 | 安徽瑞露科技有限公司 | Battery top cap subassembly |
| CN114566751B (en) * | 2021-12-09 | 2023-05-05 | 西安交通大学 | Pressure relief device of lithium battery safety valve |
| CN114725610B (en) * | 2022-06-06 | 2024-04-02 | 江苏时代新能源科技有限公司 | End cover assembly, battery cell, battery and power utilization device |
-
2016
- 2016-08-15 CN CN201610671495.XA patent/CN106058121B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106058121A (en) | 2016-10-26 |
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| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: 213200 Minghu Road, Jintan District, Changzhou City, Jiangsu Province, 399 Patentee after: Changzhou Redford Precision Technology Co., Ltd. Address before: 518000 5 Tung Keng Road, Dong Keng, Gongming Town, Guangming New District, Shenzhen, Guangdong Patentee before: SHENZHEN RED FAIRY PRECISION TECHNOLOGY CO., LTD. |
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