CN207818632U - A kind of safety-type lithium battery - Google Patents
A kind of safety-type lithium battery Download PDFInfo
- Publication number
- CN207818632U CN207818632U CN201721577957.8U CN201721577957U CN207818632U CN 207818632 U CN207818632 U CN 207818632U CN 201721577957 U CN201721577957 U CN 201721577957U CN 207818632 U CN207818632 U CN 207818632U
- Authority
- CN
- China
- Prior art keywords
- battery
- inner casing
- safety
- exhaust outlet
- battery case
- 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
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model is related to technical field of lithium batteries, in particular a kind of safety-type lithium battery, including battery case and the battery inner casing that is arranged inside battery case.Pressure is offset by the elastic force of rubber bar itself, so that spring deformation stores power after stripper plate stress, spring return function, it pushes stripper plate to drive rubber bar being covered on battery inner casing inner wall tightly, is conducive to ensure that the pressure of inner wall surface is by extrusion preventing device pressure release when being squeezed, reduce the damage to inner wall, simultaneously when the pressure disappears, fixation can be supported to battery inner casing by rubber bar, improves whole safety；Cock body is slided by pulley in exhaust outlet inner wall, connecting pole is ejected into sheet rubber, cock body leaves exhaust outlet at this time, internal air pressure can be emptied from exhaust ports, be conducive to rational internal air pressure to be adjusted, the equilibrium of internal pressure when safeguard work, avoids air pressure inside is excessive shell is caused to burst, leads to the problem of security risk.
Description
Technical field
The utility model is related to technical field of lithium batteries, specially a kind of safety-type lithium battery.
Background technology
It by lithium metal or lithium alloy is negative material, using the battery of non-aqueous electrolytic solution that lithium battery, which is a kind of,.The world
The energy is becoming tight with Environmental Protection Situation day, and battery increasingly has been favored by people as power source.Lithium ion battery is due to it
Energy density is high, small, light-weight, environment friendly and pollution-free, and the remarkable advantages such as memory-less effect gradually become the head of energy field
Choosing.In the economic policy currently carried out, one of the energy supply system that new-energy automobile uses is exactly lithium ion battery mould
The development of block, lithium ion battery is increasingly highlighted in the importance of energy field.
Chinese utility model application patent publication No. is that CN206532834U discloses a kind of safety-type lithium battery, including electricity
The inner homogeneous of pond ontology, the battery body is provided with electrolyte, and the centre inside the battery body is provided with diaphragm, institute
The one end for stating diaphragm is provided with positive plate, and the other end of the diaphragm is provided with negative plate, and cathode work is coated on the negative plate
Property material layer, be coated with anode active material layer on the positive plate, it also includes insulation foaming agent, the anode active material layer
Or doped with insulation foaming agent in anode active material layer；The utility model is simple in structure, passes through the electricity in positive and negative electrode on piece
A small amount of foaming agent is mixed into the active material of pole, when short circuit occurs for inside battery, foaming agent will be because of in unexpected temperature
It rises and swells, to play the purpose for blocking positive and negative plate to be powered, avoid battery instantaneous temperature due to short circuit from rising generation quick-fried
It is fried, improve safety.
But the patent also has following room for improvement：When short circuit occurs for inside battery, internal temperature steeply rises, internal gas
Compression swelling carries out inner casing certain extruding force, and long-term squeeze causes inner casing to generate gap even breakage, while air pressure inside is swollen
It is swollen to be discharged, cause shell to burst, generates some potential safety problems.In consideration of it, it is proposed that a kind of safety-type lithium battery.
Utility model content
The purpose of this utility model is to provide a kind of safety-type lithium batteries, to solve in mentioned above in the background art
Portion's air pressure expansion carries out inner casing certain extruding force, and long-term squeeze causes inner casing generation gap even damaged, while internal gas
Compression swelling can not be discharged, and shell is caused to burst, and lead to the problem of some potential safety problems.
To achieve the above object, the utility model provides the following technical solutions：
A kind of safety-type lithium battery, including battery case and the battery inner casing that is arranged inside the battery case, institute
The inner homogeneous for stating battery inner casing is provided with electrolyte, is provided with every mould among the battery inner housing inner, described every the one of mould
End is provided with positive plate, and the other end every mould is provided with negative plate, is set between the battery case and the battery inner casing
It is equipped with extrusion preventing device, exhaust outlet is provided at the top of the battery inner casing, the exhaust outlet sequentially passes through the battery inner casing
With the battery case, the exhaust outlet is internally provided with exhaust apparatus.
Preferably, the positive plate surface is coated with anode active material layer, and the surface of the negative plate is coated with negative electrode active
The inside of material layer, the anode active material layer is filled with insulation foaming agent.
Preferably, the extrusion preventing device includes rubber bar, and the rubber bar is close to battery inner casing side, the rubber
One end of glue stick is provided with stripper plate, the rubber bar and the stripper plate by glue adhesion, and one end of the stripper plate is set
It is equipped with spring, the stripper plate passes through the spring and the battery case inner wall elastic connection.
Preferably, the exhaust apparatus includes upper cover, and the bottom of the upper cover is provided with cock body, and the diameter of the cock body is small
In the diameter of the exhaust outlet, the upper cover is provided with torque spring close to the battery case side, and the upper cover passes through institute
Torque spring and the battery case elastic connection are stated, the cock body is symmetrically arranged with one close to the both sides of the exhaust outlet inner wall
To connecting pole, one end of the connecting pole is provided with pulley, and the pulley and the exhaust outlet inner wall are slidably matched.
Preferably, the outlet end both sides of the exhaust outlet are equipped with sheet rubber, and the sheet rubber and cock body sliding connect
It touches.
Compared with prior art, the beneficial effects of the utility model：
1, the safety-type lithium battery, is offset pressure by the elastic force of rubber bar itself, while rubber bar is pressed
Stripper plate can be pushed after power, spring deformation is made to store power after stripper plate stress, and spring return function pushes stripper plate to drive rubber bar tight
Tight is covered on battery inner casing inner wall, is conducive to ensure when being squeezed, the pressure of inner wall surface by extrusion preventing device pressure release,
The damage to inner wall is reduced, while when the pressure disappears, fixation can be supported to battery inner casing by rubber bar, improved
Whole safety.
2, the safety-type lithium battery, cock body are slided by pulley in exhaust outlet inner wall, connecting pole are ejected sheet rubber, at this time
Cock body leaves exhaust outlet, and internal air pressure can be emptied from exhaust ports, is conducive to rational internal air pressure and is adjusted, protects
The equilibrium of internal pressure, avoids air pressure inside is excessive shell is caused to burst, leads to the problem of security risk when hindering work.
Description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model extrusion preventing device structural schematic diagram；
Fig. 3 is structure enlargement diagram at the utility model A.
In figure：1, battery case；2, battery inner casing；21, electrolyte；22, positive plate；221, anode active material layer；23、
Negative plate；231, anode active material layer；232, insulation foaming agent；24, every mould；25, extrusion preventing device；251, rubber bar；
252, stripper plate；253, spring；26, exhaust apparatus；261, upper cover；262, cock body；263, torque spring；264, sheet rubber；
265, connecting pole；267, pulley；27, exhaust outlet.
Specific implementation mode
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 making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：
A kind of safety-type lithium battery, referring to Fig. 1, including battery case 1 and the battery being arranged inside battery case 1
The inner homogeneous of inner casing 2, battery inner casing 2 is provided with electrolyte 21, and 2 bosom of battery inner casing is provided with every mould 24, every mould 24
One end be provided with positive plate 22, the other end of mould 24 is provided with negative plate 23, is set between battery case 1 and battery inner casing 2
It is equipped with extrusion preventing device 25, the top of battery inner casing 2 is provided with exhaust outlet 27, and exhaust outlet 27 sequentially passes through battery inner casing 2 and electricity
Pond shell 1, exhaust outlet 27 are internally provided with exhaust apparatus 26, and 22 surface of positive plate is coated with anode active material layer 221, cathode
The surface of piece 23 is coated with anode active material layer 231, and the inside of anode active material layer 231 is filled with insulation foaming agent 232,
When carrying out charging process, lithium ion, the lithium ion of generation are generated by the anode active material layer 221 on the positive plate 22 of battery
It is moved on negative plate 23 by electrolyte 21, the lithium ion of 23 surface cathode of negative plate is just embedded into anode active material layer
In 231, embedded lithium ion is more, and charging capacity is higher, when progress battery is discharged, is embedded in anode active material layer
231 lithium ion abjection, and moves back on positive plate 22, and the lithium ion for returning to anode is more, and discharge capacity is higher, lithium from
In sub- motion process, there is higher punctured resistance every mould 24, play hot safety effect, when short circuit occurs for inside battery,
Insulation foaming agent 232 will swell because of unexpected temperature rise, and insulation foaming agent 232 is azo dicarbonamide, bicarbonate
Sodium, adjacent toluene sulfonyl hydrazide, to one kind in sulfonyloxy methyl amino urea or citric acid, block positive and negative plate to be powered to play
Purpose avoids battery instantaneous temperature rising due to short circuit from exploding, improves safety.
Please refer to Fig.1 and Fig. 2, extrusion preventing device 25 includes rubber bar 251, rubber bar 251 close to 2 side of battery inner casing,
One end of rubber bar 251 is provided with stripper plate 252, rubber bar 251 and stripper plate 252 by glue adhesion, and the one of stripper plate 252
End is provided with spring 253, stripper plate 252 by 1 inner wall elastic connection of spring 253 and battery case, when internal temperature drastically on
It rising, air pressure inside expansion, the power of expansion can squeeze battery inner casing 2, and battery inner casing 2 generates pressure to 2 direction of battery inner casing at this time,
Contact with pressure on rubber bar 251, by rubber bar 251, the elastic force of itself offsets pressure, while rubber bar 251 by
Stripper plate 252 can be pushed after pressure, make 253 deformation of spring store power, after air pressure disappears, spring 253 after 252 stress of stripper plate
Return pushes stripper plate 252 to drive being covered on 2 inner wall of battery inner casing tightly of rubber bar 251, is conducive to ensure and is squeezed
When, the pressure of inner wall surface reduces the damage to inner wall, while when the pressure disappears, Ke Yitong by 25 pressure release of extrusion preventing device
It crosses rubber bar 251 and fixation is supported to battery inner casing 2, improve whole safety.
It please refers to Fig.1 and Fig. 3, exhaust apparatus 26 includes upper cover 261, the bottom of upper cover 261 is provided with cock body 262, cock body
262 diameter is less than the diameter of exhaust outlet 27, and upper cover 261 is provided with torque spring 263, upper cover 261 close to 1 side of battery case
By 1 elastic connection of torque spring 263 and battery case, cock body 262 is symmetrically arranged with one close to the both sides of 27 inner wall of exhaust outlet
To connecting pole 265, one end of connecting pole 265 is provided with pulley 267, and pulley 267 and 27 inner wall of exhaust outlet are slidably matched, exhaust outlet
27 outlet end both sides are equipped with sheet rubber 264,262 sliding contact of sheet rubber 264 and cock body, when internal temperature steeply rises,
Air pressure inside expands, and internal air pressure is caused to be more than external air pressure, and internal air pressure at this time passes through exhaust outlet to external movement
27 push cock body 262, and when air pressure is excessive, cock body 262 is slided by pulley 267 in 27 inner wall of exhaust outlet, and connecting pole 265 is pushed up
Go out sheet rubber 264, while torque spring 263 is elongated, cock body 262 leaves exhaust outlet 27 at this time, and internal air pressure can be from exhaust
Emptied at mouthfuls 27, after air pressure balance, cock body 262 using the gravity of itself and the elastic force of torque spring 263, by cock body 262 to
It is pulled at exhaust outlet 27, connecting pole 265 passes through sheet rubber 264, sheet rubber 264 and cock body 262 to be bonded at this time, and cock body 262 is located at
Inside gas vent 27, gas vent 27 is blocked, is conducive to rational internal air pressure and is adjusted, when safeguard work inside
The equilibrium of pressure avoids air pressure inside is excessive shell is caused to burst, leads to the problem of security risk.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model
Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within this claimed practicality
In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (5)
1. a kind of safety-type lithium battery includes the battery inner casing of battery case (1) and setting inside the battery case (1)
(2), it is characterised in that：The inner homogeneous of the battery inner casing (2) is provided with electrolyte (21), and the battery inner casing (2) is internal
Centre is provided with every mould (24), and described that one end of mould (24) is provided with positive plate (22), the other end every mould (24) is set
It is equipped with negative plate (23), extrusion preventing device (25) is provided between the battery case (1) and the battery inner casing (2), it is described
It is provided with exhaust outlet (27) at the top of battery inner casing (2), the exhaust outlet (27) sequentially passes through the battery inner casing (2) and described
Battery case (1), the exhaust outlet (27) are internally provided with exhaust apparatus (26).
2. safety-type lithium battery according to claim 1, it is characterised in that：Positive plate (22) surface is coated with positive work
Property material layer (221), the surface of the negative plate (23) is coated with anode active material layer (231), the anode active material layer
(231) inside is filled with insulation foaming agent (232).
3. safety-type lithium battery according to claim 1, it is characterised in that：The extrusion preventing device (25) includes rubber bar
(251), for the rubber bar (251) close to battery inner casing (2) side, one end of the rubber bar (251) is provided with extruding
Plate (252), the rubber bar (251) and the stripper plate (252) are set by glue adhesion, one end of the stripper plate (252)
It is equipped with spring (253), the stripper plate (252) passes through the spring (253) and the battery case (1) inner wall elastic connection.
4. safety-type lithium battery according to claim 1, it is characterised in that：The exhaust apparatus (26) includes upper cover
(261), the bottom of the upper cover (261) is provided with cock body (262), and the diameter of the cock body (262) is less than the exhaust outlet
(27) diameter, the upper cover (261) are provided with torque spring (263), the upper cover close to the battery case (1) side
(261) by the torque spring (263) and the battery case (1) elastic connection, the cock body (262) is close to the exhaust
The both sides of mouth (27) inner wall are symmetrically arranged with a pair of of connecting pole (265), and one end of the connecting pole (265) is provided with pulley
(267), the pulley (267) and the exhaust outlet (27) inner wall are slidably matched.
5. safety-type lithium battery according to claim 4, it is characterised in that：Pacify the outlet end both sides of the exhaust outlet (27)
Equipped with sheet rubber (264), the sheet rubber (264) and the cock body (262) sliding contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721577957.8U CN207818632U (en) | 2017-11-23 | 2017-11-23 | A kind of safety-type lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721577957.8U CN207818632U (en) | 2017-11-23 | 2017-11-23 | A kind of safety-type lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207818632U true CN207818632U (en) | 2018-09-04 |
Family
ID=63334959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721577957.8U Expired - Fee Related CN207818632U (en) | 2017-11-23 | 2017-11-23 | A kind of safety-type lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207818632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273778A (en) * | 2018-09-26 | 2019-01-25 | 天津力神电池股份有限公司 | The rectangular solid state battery of type of respiration |
| CN112787004A (en) * | 2021-03-12 | 2021-05-11 | 惠州市超聚电池有限公司 | Steel shell button cell packaging structure and steel shell button cell |
-
2017
- 2017-11-23 CN CN201721577957.8U patent/CN207818632U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273778A (en) * | 2018-09-26 | 2019-01-25 | 天津力神电池股份有限公司 | The rectangular solid state battery of type of respiration |
| CN112787004A (en) * | 2021-03-12 | 2021-05-11 | 惠州市超聚电池有限公司 | Steel shell button cell packaging structure and steel shell button cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190325 Address after: 553000 No. 4 Building, Block 5, Lianghe New District, Lianghe Township Street, Panzhou City, Guizhou Province Patentee after: GUIZHOU GUOXIA NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: 312500 Shuizhu No. 11-1, Xishan Village, Juzhen, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: XINCHANG COUNTY WANGDONG AGRICULTURAL DEVELOPMENT Co.,Ltd. |
|
| 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: 20180904 Termination date: 20211123 |