CN220930279U - Pressure relief device of battery safety valve - Google Patents
Pressure relief device of battery safety valve Download PDFInfo
- Publication number
- CN220930279U CN220930279U CN202322213437.0U CN202322213437U CN220930279U CN 220930279 U CN220930279 U CN 220930279U CN 202322213437 U CN202322213437 U CN 202322213437U CN 220930279 U CN220930279 U CN 220930279U
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- CN
- China
- Prior art keywords
- battery
- valve body
- sealing
- pressure relief
- exhaust
- 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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- 238000007789 sealing Methods 0.000 claims abstract description 71
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 claims abstract description 3
- 239000002253 acid Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention relates to the field of lead-acid battery production, in particular to a pressure relief device of a battery safety valve, which comprises a valve body, wherein an exhaust cavity is arranged on the valve body, a baffle plate is further fixed on the valve body at the bottom of the exhaust cavity, a sealing pipe which is in sliding connection with the baffle plate is arranged in the baffle plate, an exhaust hole which penetrates through the sealing pipe is further arranged on the sealing pipe, pressure relief holes are uniformly formed in the sealing pipe below the exhaust hole, a sealing plate is further fixed above the sealing pipe, the sealing plate is arranged in the exhaust cavity and is in sliding connection with the valve body, a spring is arranged in the exhaust cavity below the sealing plate, a plurality of communication holes are further arranged on the sealing plate outside the sealing pipe, a diversion cavity which is communicated with the exhaust cavity is further arranged in the valve body, and ventilation holes are further formed in the valve body above the diversion cavity. After the airflow of the battery is discharged, the spring pulls the sealing plate to descend, the baffle covers the exhaust hole of the sealing tube again to seal the battery, and the battery can be continuously used without changing accessories.
Description
[ Field of technology ]
The invention relates to the field of lead-acid battery production, in particular to a pressure relief device of a battery safety valve.
[ Background Art ]
The polar plate is a main component for storing electric energy of the storage battery, the polar plate is obtained by filling active substances on the grid, and the polar plate needs to be solidified and dried after the grid is coated, so that the coated active substances and the grid are integrated. The curing and drying of the accumulator plate is a key procedure in the process of manufacturing the accumulator plate in the lead-acid accumulator industry, and directly influences the mechanical strength and the electrical property of the formed accumulator plate, and relates to the capacity and the service life of the lead-acid accumulator.
However, when the thermal runaway occurs, the internal heat generation of the battery suddenly increases to quickly raise the temperature of the battery, the internal electrode reacts with the electrolyte and the internal substances such as electrolyte are decomposed, so that a large amount of gas is generated in a short time to quickly raise the internal pressure, further causing the deformation of the battery shell and even causing the explosion risk of the battery. In order to improve the safety of the lithium battery in the use process, a safety valve is required to be arranged in the battery core structure of the lithium battery, and the safety valve can be rapidly opened and gas is discharged when the internal pressure of the battery is too high, so that the explosion risk of the battery is reduced.
At present, aiming at the pressure relief method and the pressure relief device of the safety valve of the lithium battery, the internal pressure of the battery is removed mainly through the internal and external penetration of the battery after the high-pressure gas in the battery breaks through a safety piece in the safety valve, such as the patent application number: 202221401272.9 discloses a battery safety valve, when the internal pressure of a battery is increased, a safety piece made of tetrafluoroethylene plastic sheets is fixed on the safety valve and is penetrated by internal gas to realize the internal and external penetration of the battery and discharge the internal gas of the battery, but when the battery is used, the safety piece is penetrated, and the battery can be continuously used only after being sealed by replacing a new safety piece, so that the battery is inconvenient to continuously use.
The invention is researched and proposed for overcoming the defects of the prior art.
[ Invention ]
The invention aims to overcome the defects of the prior art and provides a pressure relief device of a battery safety valve.
The invention can be realized by the following technical scheme:
The invention discloses a pressure relief device of a battery safety valve, which comprises a valve body, wherein an exhaust cavity is arranged on the valve body, a baffle is also fixed on the valve body at the bottom of the exhaust cavity, a sealing pipe which is in sliding connection with the baffle is arranged in the baffle, an exhaust hole which penetrates through the sealing pipe is also arranged on the sealing pipe, pressure relief holes are uniformly formed in the sealing pipe below the exhaust hole, a sealing plate is also fixed above the sealing pipe, the sealing plate is arranged in the exhaust cavity and is in sliding connection with the valve body, a spring is arranged in the exhaust cavity below the sealing plate, a plurality of communication holes are also arranged on the sealing plate outside the sealing pipe, a diversion cavity which is communicated with the exhaust cavity is also arranged in the valve body, and an air vent is also arranged on the valve body above the diversion cavity. When the pressure in the battery increases, the sealing tube slides in the baffle, the sealing tube slides upwards, the exhaust hole reaches the baffle top, the gas in the battery reaches outside the sealing tube through the exhaust hole, the gas is discharged through the bleeder vent after passing through the intercommunicating pore, reduce the internal gas pressure of the battery, avoid the battery to explode, the internal gas of battery discharges, the spring resumes natural state after, the spring pulls the closing plate to descend, the sealing tube descends along with the closing plate, the baffle covers again and realizes sealing the internal of battery on the exhaust hole of sealing tube, and set up a plurality of pressure release holes under the exhaust hole, when the internal pressure of battery is too big, gas can't in time discharge through the exhaust hole, the sealing tube continues to upwards move, the pressure release hole reaches the baffle top, realize pressure release hole and bleeder vent intercommunication, with the internal gas of battery discharge fast.
Preferably, the valve body is further provided with external threads assembled with the battery. The valve body is assembled with the battery through external threads.
Preferably, the valve body is also sleeved with a sealing ring. The tightness between the valve body and the battery is ensured by arranging the sealing ring.
Compared with the prior art, the invention has the following advantages:
1. After the air flow of the battery is discharged, the spring pulls the sealing plate to descend, the sealing pipe descends along with the sealing plate, the baffle covers the exhaust hole of the sealing pipe again to realize the internal sealing of the battery, and the battery can be continuously used without changing accessories.
2. When the internal pressure of the battery is overlarge, gas cannot be discharged in time through the exhaust hole, the sealing tube continues to move upwards, the pressure relief hole reaches the upper part of the baffle plate, the pressure relief hole is communicated with the air holes, and the internal gas of the battery is discharged rapidly.
[ Description of the drawings ]
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the structure of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
In the figure: 1. a valve body; 2. an external thread; 3. a seal ring; 4. an exhaust chamber; 5. a baffle; 6. sealing the tube; 7. an exhaust hole; 8. a pressure relief hole; 9. a sealing plate; 10. a spring; 11. a communication hole; 12. a diversion cavity; 13. ventilation holes;
[ detailed description ] of the invention
Embodiments of the present invention will be described in detail below with reference to the attached drawings:
Example 1:
As shown in fig. 1 to 3, this embodiment discloses a pressure relief device for a battery safety valve, which comprises a valve body 1, wherein an exhaust cavity 4 is arranged on the valve body 1, a baffle 5 is also fixed on the valve body 1 at the bottom of the exhaust cavity 4, a sealing tube 6 which is in sliding connection with the baffle 5 is arranged in the baffle 5, an exhaust hole 7 which penetrates through the sealing tube 6 is also arranged on the sealing tube 6, pressure relief holes 8 are also uniformly arranged on the sealing tube 6 below the exhaust hole 7, a sealing plate 9 is also fixed above the sealing tube 6, the sealing plate 9 is arranged in the exhaust cavity 4 and is in sliding connection with the valve body 1, a spring 10 is arranged in the exhaust cavity 4 below the sealing plate 9, a plurality of communication holes 11 are also arranged on the sealing plate 9 outside the sealing tube 6, a diversion cavity 12 which is communicated with the exhaust cavity 4 is also arranged in the valve body 1, and an air vent 13 is also arranged on the valve body 1 above the diversion cavity 12. When the pressure in the battery increases, the sealing tube 6 slides in the baffle 5, the sealing tube 6 slides upwards, the exhaust hole 7 reaches the baffle 5, the gas in the battery reaches the outside of the sealing tube 6 through the exhaust hole 7, the gas is discharged through the vent hole 13 after passing through the communication hole 11, the internal gas pressure of the battery is reduced, explosion of the battery is avoided, the spring 10 restores the natural state after the internal gas of the battery is discharged, the spring 10 pulls the sealing plate 9 to descend, the sealing tube 6 descends along with the sealing plate 9, the baffle 5 covers the exhaust hole 7 of the sealing tube 6 again to realize sealing the internal part of the battery, and a plurality of pressure relief holes 8 are arranged below the exhaust hole 7, when the internal pressure of the battery is overlarge, the gas cannot be discharged in time through the exhaust hole 7, the sealing tube 6 continues to move upwards, the pressure relief holes 8 reach the upper part of the baffle 5, the pressure relief holes 8 are communicated with the vent holes 13, and the internal gas of the battery is discharged rapidly.
Wherein, the valve body 1 is also provided with an external thread 2 assembled with a battery. The valve body 1 is assembled with the battery by external threads 2.
Example 2:
the embodiment discloses a battery relief valve pressure relief device, on the basis of embodiment 1 structure and principle, still cup joints sealing washer 3 on the valve body 1 of this embodiment. The tightness between the valve body 1 and the battery is ensured by arranging the sealing ring 3.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that various changes, modifications, substitutions and alterations can be made herein by those skilled in the art without departing from the technical principles of the present invention, and such changes, modifications, substitutions and alterations are also to be regarded as the scope of the invention.
Claims (3)
1. The utility model provides a battery relief valve pressure relief device, includes valve body, its characterized in that: the valve body is provided with an exhaust cavity, the valve body at the bottom of the exhaust cavity is also fixedly provided with a baffle, a sealing pipe which is in sliding connection with the baffle is arranged in the baffle, an exhaust hole which penetrates through the sealing pipe is further formed in the sealing pipe, pressure relief holes are uniformly formed in the sealing pipe below the exhaust hole, a sealing plate is further fixedly arranged above the sealing pipe, the sealing plate is arranged in the exhaust cavity and is in sliding connection with the valve body, a spring is arranged in the exhaust cavity below the sealing plate, a plurality of communication holes are further formed in the sealing plate outside the sealing pipe, a diversion cavity which is communicated with the exhaust cavity is further formed in the valve body, and ventilation holes are further formed in the valve body above the diversion cavity.
2. The battery safety valve pressure relief device according to claim 1, wherein: and the valve body is also provided with external threads assembled with the battery.
3. The battery safety valve pressure relief device according to claim 1, wherein: and the valve body is also sleeved with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322213437.0U CN220930279U (en) | 2023-08-17 | 2023-08-17 | Pressure relief device of battery safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322213437.0U CN220930279U (en) | 2023-08-17 | 2023-08-17 | Pressure relief device of battery safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220930279U true CN220930279U (en) | 2024-05-10 |
Family
ID=90932530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322213437.0U Active CN220930279U (en) | 2023-08-17 | 2023-08-17 | Pressure relief device of battery safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220930279U (en) |
-
2023
- 2023-08-17 CN CN202322213437.0U patent/CN220930279U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |