CN203812930U - Power cylinder type lithium ion battery safety cap - Google Patents
Power cylinder type lithium ion battery safety cap Download PDFInfo
- Publication number
- CN203812930U CN203812930U CN201420184984.9U CN201420184984U CN203812930U CN 203812930 U CN203812930 U CN 203812930U CN 201420184984 U CN201420184984 U CN 201420184984U CN 203812930 U CN203812930 U CN 203812930U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof valve
- end cover
- protection shield
- safety cap
- 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 - Lifetime
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 9
- 239000011247 coating layer Substances 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007774 positive electrode material Substances 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical group [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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)
- Secondary Cells (AREA)
Abstract
The utility model discloses a power cylinder type lithium ion battery safety cap, including the sealing washer, be equipped with first limit structure and second limit structure on the sealing washer, form sealed chamber between first limit structure and the second limit structure, install end cover, positive temperature coefficient control terminal and explosion-proof valve in the sealed chamber, positive temperature coefficient control terminal is located between end cover and the explosion-proof valve, and the end cover is located positive temperature coefficient control terminal top, it has a plurality of air vents to open on the end cover, the protection shield is installed to the sealing washer bottom, the protection shield is connected with explosion-proof valve, and protection shield central dimension is less than the size at protection shield both ends. The utility model discloses can avoid the sending of accidents such as fire, explosion, realize the effect of protection, the design of this explosion-proof valve is dexterous, the structure is firm, is worth popularizing and applying.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a technical field of battery safety device, especially the technical field of power cylinder type lithium ion battery safety cap.
[ background of the invention ]
Nowadays, electronic products are very popular, and batteries are widely used, and include alkaline zinc-manganese batteries, cadmium-nickel batteries, hydrogen-nickel batteries, lithium ion batteries, fuel batteries, solar batteries, and the like. Lithium ion batteries are widely used by people, wherein a positive electrode material of the lithium ion battery is cobalt lithium oxide, a negative electrode material of the lithium ion battery is a carbon material, and the battery realizes the charging and discharging process of the battery through the insertion and extraction of lithium ions generated by a positive electrode in the negative electrode carbon material. Since 1990, lithium ion batteries have been introduced, have been rapidly developed due to their excellent performance, and have been widely used in society. Lithium ion batteries rapidly occupy many fields, such as well-known mobile phones, notebook computers, miniature cameras, etc., with advantages not comparable to other batteries, and are being used for military purposes in more and more countries. The application shows that the lithium ion battery is an ideal small-sized green power supply.
The positive electrode material of the lithium ion secondary battery contains lithium element, and if the positive electrode material is not properly handled during use, storage and transportation, danger and loss may occur. For example, overcharge, overdischarge, short circuit, high temperature, impact and the like all cause the internal structure of the battery to change, which causes the temperature to rise rapidly, the internal short circuit or the internal high voltage, thereby causing serious consequences such as liquid leakage, combustion and even explosion of the lithium ion battery. The head of the existing lithium ion cylindrical battery consists of a sealing ring, an upper cover plate and a positive temperature coefficient control terminal (PTC), and the existing lithium ion cylindrical battery does not have any explosion-proof and protection device, so that the problem of internal high-pressure gas which directly causes explosion of the battery cannot be solved. Safety performance issues of lithium ion batteries have been an important factor limiting the rapid growth of the industry.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, provide a power cylinder type lithium ion battery safety block, can avoid the sending of accidents such as fire, explosion, realize the effect of protection, the design dexterous, the structure of this explosion-proof valve is firm, is worth popularizing and applying.
In order to realize the above-mentioned purpose, the utility model provides a power cylinder type lithium ion battery safety cap, including the sealing washer, be equipped with first limit structure and second limit structure on the sealing washer, form sealed chamber between first limit structure and the second limit structure, end cover, positive temperature coefficient control terminal and explosion-proof valve are installed to sealed intracavity, positive temperature coefficient control terminal is located between end cover and the explosion-proof valve, and the end cover is located positive temperature coefficient control terminal top, it has a plurality of air vents to open on the end cover, the protection shield is installed to the sealing washer bottom, the protection shield is connected with the explosion-proof valve, and protection shield central dimension is less than the size at protection shield both ends.
Preferably, the first limiting structure is located above the second limiting structure, and the first limiting structure and the second limiting structure are both annular structures.
Preferably, a circular dust guard plate is installed above the vent hole, and the diameter of the dust guard plate is equal to that of the vent hole.
Preferably, the upper surface and the lower surface of the explosion-proof valve are both coated with radiation heat-dissipation coating layers, the middle of the explosion-proof valve is of an arc-shaped structure, the periphery of the explosion-proof valve is of a flat structure, and notches are arranged on the arc-shaped structure in the middle of the explosion-proof valve.
Preferably, the center of the protection plate is welded and connected with the circular arc structure of the explosion-proof valve.
The utility model has the advantages that: the utility model discloses the inner structure that the explosion-proof valve made the battery is not only nimble but also firm, prevent the weeping of battery, burning and explosion, receive the overcharge when the battery, the overdischarge, the short circuit, high temperature, circumstances such as striking, lead to battery inner structure to change, the temperature sharply risees, inside short circuit, when causing inside high pressure, the explosion-proof valve will also take place deformation along with inside atmospheric pressure, explosion-proof valve and protection shield continuous part just break off and form the battery and open circuit when a definite value, the central dimension of protection shield is less than both ends size, make the protection shield rise to the temperature sharply, inside short circuit, it is more sensitive to cause the highly compressed situation in inside, the protection battery that can be better, if interior pressure still continues to rise when reaching a definite value the explosion-proof valve will tear along nick department and carry out the exhaust in order to stop the explosion, the condition takes place of catching a fire, thereby reach the guard action, and the gas that produces can be timely overflows from the air vent above the end cover, prevent that the sealed intracavity from producing too big pressure, the dust fender dirt board of air vent top can prevent to get into the sealed intracavity, and the upper and all scribble has the radiation coating layer, and have the radiation coating layer, can be scribbled in the upper and can be in the short time that the form of explosion-proof valve, can reduce in the interior through radiation.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of a safety cap of a power cylindrical lithium ion battery of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
[ detailed description ] embodiments
Referring to fig. 1 and 2, the utility model relates to a power cylinder type lithium ion battery safety cap, including sealing washer 1, be equipped with first limit structure 11 and second limit structure 12 on the sealing washer 1, form sealed chamber 13 between first limit structure 11 and the second limit structure 12, install end cover 2, positive temperature coefficient control terminal 3 and explosion-proof valve 4 in the sealed chamber 13, positive temperature coefficient control terminal 3 is located between end cover 2 and the explosion-proof valve 4, and end cover 2 is located positive temperature coefficient control terminal 3 top, it has a plurality of air vents 21 to open on the end cover 2, protection shield 5 is installed to sealing washer 1 bottom, protection shield 5 is connected with explosion-proof valve 4, and protection shield 5 central dimension is less than the size at protection shield 5 both ends, first limit structure 11 is located the top of second limit structure 12, and first limit structure 11 and second limit structure 12 are the loop configuration, circular dust board 22 is installed to air vent 21 top, the diameter of protection shield 22 equals the diameter of air vent 21, the upper surface and the explosion-proof valve 4's explosion-proof coating layer 41 that all scribbles the radiation heat dissipation coating layer 41, and explosion-proof valve 4's centre is arc-shaped structure, is arc-shaped flat dust-proof valve 4's arc-shaped connection structure around the arc-shaped connection structure 4, arc-shaped connection structure of protection shield 4.
The utility model discloses the working process:
the utility model relates to a power cylinder type lithium ion battery safety cap is in the course of the work, receive the overcharge when the battery, the overdischarge, the short circuit, high temperature, circumstances such as striking, lead to battery inner structure to change, the temperature sharply risees, inside short circuit, when leading to inside high pressure, explosion-proof valve 4 will also take place deformation along with inside atmospheric pressure, explosion-proof valve 4 and protection shield 5 part that links to each other just break off and form the battery and open circuit to a definite value, the central dimension of protection shield 5 is less than both ends size, make protection shield 5 rise to the temperature sharply, inside short circuit, it is more sensitive to cause the highly compressed situation in inside, the protection battery that can be better, explosion-proof valve 4 will tear along nick department and carry out the exhaust in order to stop the explosion if interior pressure still continues to rise when reaching a definite value, the condition takes place of catching a fire, thereby reach the guard action, and the gas that produces can be timely overflows from air vent 21 of end cover 2 top, prevent to produce too big pressure in the sealed chamber 13, dust fender board 22 of air vent 21 top can prevent that the dust from getting into sealed chamber 13, and prevent that the dust from getting into sealed intracavity, and the heat of explosion-proof valve 4 from all scribbling radiation dope layer 41, and scribble radiation, can produce the form in the short time and scribble radiation dope layer 41.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (5)
1. The utility model provides a power cylinder type lithium ion battery safety block which characterized in that: including sealing washer (1), be equipped with first limit structure (11) and second limit structure (12) on sealing washer (1), form sealed chamber (13) between first limit structure (11) and second limit structure (12), install end cover (2), positive temperature coefficient control terminal (3) and explosion-proof valve (4) in sealed chamber (13), positive temperature coefficient control terminal (3) are located between end cover (2) and explosion-proof valve (4), and end cover (2) are located positive temperature coefficient control terminal (3) top, it has a plurality of air vents (21) to open on end cover (2), protection shield (5) are installed to sealing washer (1) bottom, protection shield (5) are connected with explosion-proof valve (4), and protection shield (5) central dimension is less than the size at protection shield (5) both ends.
2. The safety cap of claim 1, wherein: the first limiting structure (11) is located above the second limiting structure (12), and the first limiting structure (11) and the second limiting structure (12) are both of annular structures.
3. The safety cap of claim 1, wherein: a circular dust guard plate (22) is mounted above the vent hole (21), and the diameter of the dust guard plate (22) is equal to that of the vent hole (21).
4. The safety cap of claim 1, wherein: the upper surface and the lower surface of the explosion-proof valve (4) are coated with radiation heat dissipation coating layers (41), the middle of the explosion-proof valve (4) is of an arc-shaped structure, the periphery of the explosion-proof valve (4) is of a flat structure, and notches are arranged on the arc-shaped structure in the middle of the explosion-proof valve (4).
5. The safety cap of claim 1, wherein: the center of the protection plate (5) is welded with the arc-shaped structure of the explosion-proof valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184984.9U CN203812930U (en) | 2014-04-16 | 2014-04-16 | Power cylinder type lithium ion battery safety cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184984.9U CN203812930U (en) | 2014-04-16 | 2014-04-16 | Power cylinder type lithium ion battery safety cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812930U true CN203812930U (en) | 2014-09-03 |
Family
ID=51451648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420184984.9U Expired - Lifetime CN203812930U (en) | 2014-04-16 | 2014-04-16 | Power cylinder type lithium ion battery safety cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019001193A1 (en) * | 2017-06-28 | 2019-01-03 | 比亚迪股份有限公司 | Battery cover assembly, single-cell battery, battery module, power battery pack, and electric vehicle |
| 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 |
-
2014
- 2014-04-16 CN CN201420184984.9U patent/CN203812930U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019001193A1 (en) * | 2017-06-28 | 2019-01-03 | 比亚迪股份有限公司 | Battery cover assembly, single-cell battery, battery module, power battery pack, and electric vehicle |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 313100 Changxin Economic Development Zone, Zhejiang, Huzhou Patentee after: ZHEJIANG XINGHAI ENERGY TECHNOLOGY Co.,Ltd. Address before: 313100 No. 1346, Taihu Avenue, Changxing County economic and Technological Development Zone, Huzhou, Zhejiang Patentee before: Zhejiang Xinghai Energy Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |