CN207587871U - Explosion-proof type lithium ion battery - Google Patents
Explosion-proof type lithium ion battery Download PDFInfo
- Publication number
- CN207587871U CN207587871U CN201721457955.5U CN201721457955U CN207587871U CN 207587871 U CN207587871 U CN 207587871U CN 201721457955 U CN201721457955 U CN 201721457955U CN 207587871 U CN207587871 U CN 207587871U
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- Prior art keywords
- explosion
- proof
- cap
- lithium ion
- type lithium
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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
Abstract
The utility model discloses explosion-proof type lithium ion batteries; including shell, battery core, Explosion-proof cap and protection circuit plates, the edge of Explosion-proof cap is sealed in insulator, and Explosion-proof cap is equipped with symmetrical venthole; chamber is equipped on the inside of Explosion-proof cap, explosion-proof valve is equipped in chamber.The utility model battery breaks down, when generating heat excessive, inside battery gas expansion, squeeze the convex surface of the explosion-proof protrusion of explosion-proof valve, when gas pressure is more than secure setting, air pressure squeezes explosion-proof protrusion and is inverted to opposite side, explosion-proof protrusion is detached from protection circuit plates, cut-off point connects, prevent battery from continuing to generate heat, the convex surface of explosion-proof protrusion becomes concave surface, simultaneously, the base portion of explosion-proof valve is unclamped with the portion that Explosion-proof cap abuts against, the gas of inside battery is flowed out by the gap between explosion-proof valve and Explosion-proof cap, it is discharged in time by the venthole on Explosion-proof cap again, so as to effectively prevent battery explosion.
Description
Technical field
It is more particularly to a kind of to ensure the explosion-proof of battery security and stability the utility model is related to technical field of lithium batteries
Type lithium ion battery.
Background technology
Lithium ion battery is a kind of secondary cell (rechargeable battery), it relies primarily on lithium ion and moves between a positive electrode and a negative electrode
It moves and carrys out work.In charge and discharge process, Li+ embedded and deintercalations back and forth between two electrodes：During charging, Li+ from anode deintercalation,
Cathode is embedded in by electrolyte, cathode is in rich lithium state；It is then opposite during electric discharge.Battery generally uses the material containing elemental lithium
It is the representative of modern high performance battery as electrode.
Lithium ion battery has that operating voltage is high, and energy density is big, safety is good, the memory-less effect that has extended cycle life etc. is excellent
Point becomes the priority research areas of new energy development.However, lithium ion battery is in encapsulation process or when improper use can be because of electricity
The decomposition for solving liquid generates gas, makes cell internal pressure excessive, is also easy to produce explosion.
Utility model content
The utility model provides a kind of explosion-proof type lithium ion battery, can solve one kind in above-mentioned prior art problem
It is or several.
One side according to the present utility model provides explosion-proof type lithium ion battery, including shell, battery core, Explosion-proof cap
And protection circuit plates,
The edge of Explosion-proof cap is embedded in insulator and is sealed, and Explosion-proof cap is equipped with symmetrical venthole,
Chamber is equipped on the inside of Explosion-proof cap, is equipped with explosion-proof valve in chamber, the base portion of explosion-proof valve abuts Explosion-proof cap, in explosion-proof valve
Between position far from Explosion-proof cap, and the intermediate position of the explosion-proof valve (4) forms explosion-proof protrusion,
Explosion-proof protrusion is weldingly connected with protection circuit plates.
The beneficial effects of the utility model are, during the normal charge and discharge of battery, the base portion of explosion-proof valve abuts Explosion-proof cap, and with pole
Ear is electrically connected, and when battery breaks down, generates heat excessive, inside battery gas expansion squeezes the explosion-proof protrusion of explosion-proof valve
Convex surface, when gas pressure is more than secure setting, air pressure squeezes explosion-proof protrusion and is inverted to opposite side, explosion-proof protrusion and
Protection circuit plates are detached from, and cut-off point connection prevents battery from continuing to generate heat, and the convex surface of explosion-proof protrusion becomes concave surface, meanwhile, prevent
The base portion of quick-fried valve is unclamped with the portion that Explosion-proof cap abuts against, and the gas of inside battery is flowed by the gap between explosion-proof valve and Explosion-proof cap
Go out, then discharged in time by the venthole on Explosion-proof cap, so as to effectively prevent battery explosion.
In some embodiments, insulating washer is further included, insulating washer is set between Explosion-proof cap and explosion-proof valve, venthole
Set on the outside of insulating washer.Advantage is, when explosion-proof protrusion is inverted by inside battery gas pressure, felt pad
Circle can play cushioning effect, and after reversion, insulating washer is isolated by explosion-proof valve with Explosion-proof cap.
In some embodiments, the edge of insulator is equipped with elastic component, and insulator is clamped by elastic component and battery case.
Advantage is that the installation of more convenient battery substantially increases installation effectiveness and tightness.
In some embodiments, there are four venthole is set.Advantage is, can effectively by battery gas is arranged
Go out.
In some embodiments, negative terminal is further included.Advantage is to pass through negative terminal and extraneous electrical appliance
It is electrically connected.
In some embodiments, further include cathode cover board, negative cover sleeve-board is set on the outside of negative terminal, cathode cover board with
Shell is weldingly connected.Advantage is that cathode cover board facilitates the installation of battery, improves the overall performance of battery.
In some embodiments, insulation spacer is equipped between negative terminal and cathode cover board.Advantage is to prevent
Battery short circuit.
In some embodiments, it is additionally provided with liquid injection hole on cathode cover board.Advantage is to facilitate to note to inside battery
Enter electrolyte, after installation is complete after battery, liquid injection hole is sealed.
Description of the drawings
Fig. 1 is the sectional view of the explosion-proof type lithium ion battery of one embodiment of the utility model；
Fig. 2 is the structure diagram after the Explosion-proof cap reversion of explosion-proof type lithium ion battery shown in Fig. 1.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1-2 schematically shows a kind of explosion-proof type lithium ion battery of embodiment according to the present utility model.Such as
Shown in figure, which includes shell, battery core 2, Explosion-proof cap 3, cathode cover board 7 and protection circuit plates 5.
Wherein, the edge of Explosion-proof cap 3 is sealed in insulator 10, and Explosion-proof cap 3 is equipped with symmetrical lead to
Stomata 31,3 inside of Explosion-proof cap are equipped with chamber, explosion-proof valve 4 are equipped in chamber, the base portion 41 of explosion-proof valve 4 abuts Explosion-proof cap 3, explosion-proof
The intermediate position of valve 4 is far from Explosion-proof cap 3, and the intermediate position of the explosion-proof valve 4 forms explosion-proof raised 42, explosion-proof raised 42 with protecting
Protection circuit plate 5 is weldingly connected.The edge of insulator 10 is equipped with elastic component, and insulator 10 passes through elastic component and battery case card
It connects, the installation of more convenient battery substantially increases installation effectiveness and tightness.
Cathode cover board 7 is weldingly connected with shell 1, improves the overall performance of battery.Cathode cover board 7 is sheathed on negative terminal 8
Outside is equipped with insulation spacer 9 between negative terminal 8 and cathode cover board 7.Liquid injection hole 11 is additionally provided on cathode cover board 7, is facilitated to electricity
Injection electrolyte, after after battery, installation is complete, liquid injection hole 11 is sealed inside pond.
For the battery of the utility model in normal charge and discharge, the base portion 41 of explosion-proof valve 4 abuts Explosion-proof cap 3, and with lug into
Row electrical connection, when battery breaks down, generates heat excessive, inside battery gas expansion squeezes explosion-proof raised the 42 of explosion-proof valve 4
Convex surface 43, when gas pressure is more than secure setting, air pressure squeezes explosion-proof raised 42 and is inverted to opposite side (such as Fig. 2 institutes
Show), explosion-proof raised 42 are detached from protection circuit plates 5, and cut-off point connection prevents battery from continuing to generate heat, explosion-proof raised 42
Convex surface 43 becomes concave surface, meanwhile, the portion that base portion 41 and the Explosion-proof cap 3 of explosion-proof valve 4 abut against is unclamped, and the gas of inside battery passes through
Gap outflow between explosion-proof valve 4 and Explosion-proof cap 3, then discharged in time by the venthole 31 on Explosion-proof cap 3, so as to effective
Prevent battery explosion.
In order to make explosion-proof raised 42 to stablize reversion, insulating washer 6, venthole 31 are equipped between Explosion-proof cap 3 and explosion-proof valve 4
Set on the outside of insulating washer 6.Advantage is, when explosion-proof raised 42 are inverted by inside battery gas pressure, absolutely
Edge washer 6 can play cushioning effect, and after reversion, insulating washer 6 is isolated by explosion-proof valve 4 with Explosion-proof cap 3.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Under the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this practicality
Novel protection domain.
Claims (8)
1. explosion-proof type lithium ion battery, including shell (1), battery core (2), Explosion-proof cap (3) and protection circuit plates (5), feature exists
In,
The edge of the Explosion-proof cap (3) is embedded in insulator (10) and is sealed, and the Explosion-proof cap (3) is equipped with symmetrical
Venthole (31),
Chamber is equipped on the inside of the Explosion-proof cap (3), explosion-proof valve (4), the base portion (41) of the explosion-proof valve (4) are equipped in the chamber
Abut Explosion-proof cap (3), the intermediate position of the explosion-proof valve (4) is far from Explosion-proof cap (3), and the intermediate position of the explosion-proof valve (4)
Explosion-proof raised (42) are formed,
Explosion-proof raised (42) are weldingly connected with protection circuit plates (5).
2. explosion-proof type lithium ion battery according to claim 1, which is characterized in that insulating washer (6) is further included, it is described exhausted
Edge washer (6) is between the Explosion-proof cap (3) and the explosion-proof valve (4), and the venthole (31) is set on the insulating washer
(6) outside.
3. explosion-proof type lithium ion battery according to claim 1, which is characterized in that the edge of the insulator (10) is equipped with
Elastic component, the insulator (10) are clamped by elastic component and battery case (1).
4. explosion-proof type lithium ion battery according to claim 1, which is characterized in that there are four the venthole (31) sets.
5. explosion-proof type lithium ion battery according to any one of claims 1 to 4, which is characterized in that further include negative terminal
(8)。
6. explosion-proof type lithium ion battery according to claim 5, which is characterized in that cathode cover board (7) is further included, it is described negative
Polar cap plate (7) is sheathed on the outside of the negative terminal (8), and the cathode cover board (7) is weldingly connected with shell (1).
7. explosion-proof type lithium ion battery according to claim 6, which is characterized in that the negative terminal (8) and negative cover
Insulation spacer (9) is equipped between plate (7).
8. explosion-proof type lithium ion battery according to claim 6, which is characterized in that be additionally provided on the cathode cover board (7)
Liquid injection hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457955.5U CN207587871U (en) | 2017-11-03 | 2017-11-03 | Explosion-proof type lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457955.5U CN207587871U (en) | 2017-11-03 | 2017-11-03 | Explosion-proof type lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207587871U true CN207587871U (en) | 2018-07-06 |
Family
ID=62730690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721457955.5U Active CN207587871U (en) | 2017-11-03 | 2017-11-03 | Explosion-proof type lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207587871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584774A (en) * | 2020-06-15 | 2020-08-25 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
-
2017
- 2017-11-03 CN CN201721457955.5U patent/CN207587871U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584774A (en) * | 2020-06-15 | 2020-08-25 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
| CN111584774B (en) * | 2020-06-15 | 2022-09-02 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191226 Address after: Room 710, 701-712, juoyue Times Square building, No. 4068, Yitian Road, Futian community, Futian District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Lvting Power Technology Co., Ltd Address before: 100083 room 2302, block D, Zhizhen building, No.7, Zhichun Road, Haidian District, Beijing Patentee before: Zhong Neng Dong Dao Group Co., Ltd. |
|
| TR01 | Transfer of patent right |