CN209730051U - Lithium battery explosion-proof valve - Google Patents
Lithium battery explosion-proof valve Download PDFInfo
- Publication number
- CN209730051U CN209730051U CN201822221535.8U CN201822221535U CN209730051U CN 209730051 U CN209730051 U CN 209730051U CN 201822221535 U CN201822221535 U CN 201822221535U CN 209730051 U CN209730051 U CN 209730051U
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- CN
- China
- Prior art keywords
- orifice plate
- top cover
- lithium battery
- rupture disk
- explosion
- 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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- 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
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model proposes a kind of lithium battery explosion-proof valves, the big cushion rubber being made of insulating material including one, the top of big cushion rubber inner wall is equipped with an annular groove, an orifice plate is provided in annular groove, insulated ring is connected on orifice plate, insulated ring is connected with explosion rupture disk far from the side of orifice plate, explosion rupture disk is connected with thermal resistor far from the side of insulated ring, thermal resistor is connected with top cover far from the side of explosion rupture disk, top cover links together with battery chamber, the lower part of big cushion rubber inner wall is equipped with one for preventing the annular bead of Top cover flying, annular bead and top cover abut against together far from the side of thermal resistor, using positive temperature coefficient thermistor, the resistance value when temperature is higher increases and nonconducting working principle the utility model, scheduled control can be reached in the temperature in the experienced lithium battery of positive temperature coefficient thermistor Lithium battery current loop is cut off when temperature, improves the safety in utilization of lithium battery.
Description
Technical field
The utility model relates to battery technology fields, more particularly, to a kind of lithium battery explosion-proof valve.
Background technique
It by lithium metal or lithium alloy is negative electrode material that lithium battery, which is a kind of, uses the battery of non-aqueous electrolytic solution, lithium
Battery can be roughly divided into two types, lithium metal battery and lithium ion battery, the lithium of the bad boyfriend's metallic state of lithium ion battery, and
It can charge.With the development of technology, present lithium battery has become mainstream.
The problem of lithium battery in the prior art is primarily present is lithium battery during electric discharge, and it is excessive that there is electric currents
Lead to that internal temperature of battery is excessively high and causes the hidden danger of battery explosion, causes using unsafe condition.Therefore, it is necessary to a kind of energy
The lithium battery explosion-proof valve enough to solve the above problems.
Utility model content
The utility model proposes a kind of lithium battery explosion-proof valves, get over Gao Shi electricity in temperature using positive temperature coefficient thermistor
Resistance value increases and nonconducting working principle, can reach in the temperature in the experienced lithium battery of positive temperature coefficient thermistor
Lithium battery current loop is cut off when to scheduled control temperature, improves the safety in utilization of lithium battery.
The technical solution of the utility model is achieved in that
The top of lithium battery explosion-proof valve, the big cushion rubber being made of insulating material including one, the big cushion rubber inner wall is equipped with one
Annular groove is provided with an orifice plate in the annular groove, insulated ring is connected on the orifice plate, the insulated ring is far from described
The side of orifice plate is connected with explosion rupture disk, and the explosion rupture disk is connected with thermal resistor, the heat far from the side of the insulated ring
Sensitive resistor is connected with top cover far from the side of the explosion rupture disk, and the top cover links together with battery chamber, the big glue
The lower part of circle inner wall is equipped with one for preventing the annular bead of the Top cover flying, and the annular bead and the top cover are far from institute
The side for stating thermal resistor abuts against together.
As a kind of perferred technical scheme, the orifice plate connects the explosion rupture disk by solder joint.
As a kind of perferred technical scheme, the middle part of the orifice plate is equipped with a through-hole, on the lateral surface of the orifice plate
It is even to set that there are four the first grooves for radially extending.
As a kind of perferred technical scheme, the explosion rupture disk includes a horizontal baffle, the lateral surface of the horizontal baffle
It is equipped with a first annular baffle, the height of the first annular baffle is slightly below the height of the horizontal baffle.
As a kind of perferred technical scheme, the thermal resistor is positive temperature coefficient thermistor.
As a kind of perferred technical scheme, the top cover includes a truncated cone-shaped cylinder, truncated cone-shaped cylinder top
Four the second grooves are uniformly provided on inner wall, the outside on truncated cone-shaped cylinder top is equipped with one and abuts against in the annular bead
The second ring baffle.
Using above-mentioned technical proposal, the utility model has the following beneficial effects:
Since lithium battery explosion-proof valve includes a big cushion rubber being made of insulating material, it is successively arranged from top to bottom in big cushion rubber
Orifice plate, insulated ring, explosion rupture disk, positive temperature coefficient thermistor and the top cover being connected with battery chamber being connected with each other, orifice plate
It is connect by solder joint with explosion rupture disk, in the condition of normal use, electric current can be in orifice plate, explosion rupture disk, positive temperature coefficient temperature-sensitive
It circulates between resistor and top cover, when the temperature of lithium battery interior increases, the connection welding between orifice plate and explosion rupture disk is disconnected,
Electric current is interrupted between orifice plate and explosion rupture disk, when lithium battery interior temperature, which continues to increase, reaches predetermined temperature, positive temperature system
The resistance value of number thermal resistor increases, and positive temperature coefficient thermistor is no longer conductive, and electric current is between top cover and explosion rupture disk
It is interrupted, to cut off lithium battery current loop, and then it is excessively high and cause to eliminate lithium battery internal temperature in charge and discharge process
The hidden danger of battery explosion improves the safety in utilization of lithium battery；The lower part of big cushion rubber inner wall is equipped with one for preventing the top
The annular bead to fall off is covered, annular bead and top cover abut against together far from the side of thermal resistor, can be preferably by this
Utility model is connected with battery chamber, avoid by external force and cause the utility model and battery chamber bad connection or
It falls off, to improve the safety that the utility model uses.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the decomposition texture schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of big cushion rubber in the utility model.
Wherein: 1, big cushion rubber；2, annular groove；3, orifice plate；4, insulated ring；5, explosion rupture disk；6, thermal resistor；7, it pushes up
Lid；8, annular bead；9, through-hole；10, the first groove；11, horizontal baffle；12, first annular baffle；13, truncated cone-shaped cylinder；
14, the second groove；15, the second ring baffle.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As Fig. 1-3 it is common shown in, lithium battery explosion-proof valve, the big cushion rubber 1 being made of insulating material including one, in big cushion rubber 1
The top of wall is equipped with an annular groove 2, is provided with an orifice plate 3 in annular groove 2, insulated ring 4, insulated ring 4 are connected on orifice plate 3
Side far from orifice plate 3 is connected with explosion rupture disk 5, and explosion rupture disk 5 is connected with thermal resistor 6, temperature-sensitive electricity far from the side of insulated ring 4
It hinders device 6 and is connected with top cover 7 far from the side of explosion rupture disk 5, top cover 7 links together with battery chamber, the lower part of big 1 inner wall of cushion rubber
Annular bead 8 equipped with one for preventing top cover 7 from falling off, annular bead 8 are abutted against with top cover 7 far from the side of thermal resistor 6
Together, preferably the utility model can be connected with battery chamber, avoids being caused this practical new by external force
Type and battery chamber bad connection fall off, to improve the safety that the utility model uses.
Orifice plate 3 connects explosion rupture disk 5 by solder joint.
The middle part of orifice plate 3 is equipped with a through-hole 9, be uniformly provided on the lateral surface of orifice plate 3 four radially extend it is first recessed
Slot 10.
Explosion rupture disk 5 includes a horizontal baffle 11, and the lateral surface of horizontal baffle 11 is equipped with a first annular baffle 12, and first
The height of ring baffle 12 is slightly below the height of horizontal baffle 11.
Thermal resistor 6 is positive temperature coefficient thermistor 6.
Top cover 7 includes a truncated cone-shaped cylinder 13, is uniformly provided with four the second grooves on the inner wall on 13 top of truncated cone-shaped cylinder
14, the outside on 13 top of truncated cone-shaped cylinder abuts against the second ring baffle 15 in annular bead 8 equipped with one.
The orifice plate 3 being connected with each other, insulated ring 4, explosion rupture disk 5, positive temperature coefficient heat are successively arranged in big cushion rubber 1 from top to bottom
Sensitive resistor 6 and the top cover 7 being connected with battery chamber, orifice plate 3 are connect by solder joint with explosion rupture disk 5, the normal use the case where
Under, electric current can circulate between orifice plate 3, explosion rupture disk 5, positive temperature coefficient thermistor 6 and top cover 7, work as lithium battery interior
Temperature when increasing, connection welding between orifice plate 3 and explosion rupture disk 5 disconnects, and electric current is interrupted between orifice plate 3 and explosion rupture disk 5,
When lithium battery interior temperature, which continues to increase, reaches predetermined temperature, the resistance value of positive temperature coefficient thermistor 6 increases, positive temperature
Degree coefficient thermal resistor 6 is no longer conductive, and electric current is interrupted between top cover 7 and explosion rupture disk 5, is flowed back to cut off lithium battery
Road, and then it is excessively high and cause the hidden danger of battery explosion to eliminate lithium battery internal temperature in charge and discharge process, improves lithium battery
Safety in utilization.
The utility model proposes lithium battery explosion-proof valve, using positive temperature coefficient thermistor when temperature is higher resistance
Value increases and nonconducting working principle, can reach in the temperature in the experienced lithium battery of positive temperature coefficient thermistor
Lithium battery current loop is cut off when scheduled control temperature, improves the safety in utilization of lithium battery.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (1)
1. lithium battery explosion-proof valve, which is characterized in that the big cushion rubber being made of insulating material including one, the big cushion rubber inner wall it is upper
Portion is equipped with an annular groove, is provided with an orifice plate in the annular groove, insulated ring, the insulated ring are connected on the orifice plate
Side far from the orifice plate is connected with explosion rupture disk, and the explosion rupture disk is connected with thermistor far from the side of the insulated ring
Device, the thermal resistor are connected with top cover far from the side of the explosion rupture disk, and the top cover links together with battery chamber,
The lower part of the big cushion rubber inner wall is equipped with one for preventing the annular bead of the Top cover flying, the annular bead and the top
It covers the side far from the thermal resistor to abut against together, the orifice plate connects the explosion rupture disk, the orifice plate by solder joint
Middle part be equipped with a through-hole, be uniformly provided with four the first grooves radially extended on the lateral surface of the orifice plate, it is described explosion-proof
Piece includes a horizontal baffle, and the lateral surface of the horizontal baffle is equipped with a first annular baffle, the first annular baffle
Height is slightly below the height of the horizontal baffle, and the thermal resistor is positive temperature coefficient thermistor, the top cover packet
A truncated cone-shaped cylinder is included, four the second grooves, the truncated cone-shaped cylinder are uniformly provided on the inner wall on truncated cone-shaped cylinder top
The outside on top abuts against the second ring baffle in the annular bead equipped with one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221535.8U CN209730051U (en) | 2018-12-27 | 2018-12-27 | Lithium battery explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221535.8U CN209730051U (en) | 2018-12-27 | 2018-12-27 | Lithium battery explosion-proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209730051U true CN209730051U (en) | 2019-12-03 |
Family
ID=68678023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822221535.8U Active CN209730051U (en) | 2018-12-27 | 2018-12-27 | Lithium battery explosion-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209730051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116417746A (en) * | 2023-06-08 | 2023-07-11 | 常州武进中瑞电子科技股份有限公司 | Safety protection structure and self-balancing cap body |
-
2018
- 2018-12-27 CN CN201822221535.8U patent/CN209730051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116417746A (en) * | 2023-06-08 | 2023-07-11 | 常州武进中瑞电子科技股份有限公司 | Safety protection structure and self-balancing cap body |
| CN116417746B (en) * | 2023-06-08 | 2023-08-04 | 常州武进中瑞电子科技股份有限公司 | Safety protection structure and self-balancing cap body |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |