CN208478394U - A kind of cover plate assembly of battery high temperature-proof failure - Google Patents
A kind of cover plate assembly of battery high temperature-proof failure Download PDFInfo
- Publication number
- CN208478394U CN208478394U CN201821303289.4U CN201821303289U CN208478394U CN 208478394 U CN208478394 U CN 208478394U CN 201821303289 U CN201821303289 U CN 201821303289U CN 208478394 U CN208478394 U CN 208478394U
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- China
- Prior art keywords
- block
- high temperature
- battery
- convex block
- cover plate
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a kind of cover plate assembly of battery high temperature-proof failure, belongs to new energy resource power battery technical field.There are thermal runaways when it solves the problems, such as existing battery high-temperature charging.The cover plate assembly of this battery high temperature-proof failure includes coping plate, conduct piece and elastic contact blade, conduct piece insulation set is on coping plate, through-hole is offered in coping plate, the edge of elastic contact blade attaches to coping plate and sealing through-hole, the middle of elastic contact blade has the contact block of protrusion setting, contact block is arranged by through-hole and conduct piece face, contact block has the convex block of protrusion setting towards the middle at the top of conduct piece, the bottom of conduct piece towards contact block is provided with blind hole, insertion is fixed with that insulation is non-conductive and dilatable dielectric high temperature expanding block at high operating temperatures in blind hole, there is cavity between the bottom of dielectric high temperature expanding block and the opening of blind hole, convex block can be embedded into the cavity.The cover plate assembly of this battery high temperature-proof failure has the advantages that prevent battery from thermal runaway occur.
Description
Technical field
The utility model belongs to new energy resource power battery part technical field, is related to a kind of cover board group of battery high temperature-proof failure
Part.
Background technique
The aluminum hull cover board of existing lithium ion battery is generally provided with anti-overcharge design, and anti-overcharge principle is that battery core exists
Gas can be generated after overcharging, the gas of generation can be such that battery core internal pressure increases, and can make elastic touching by the way that elastic contact blade is arranged
Piece moves after pressure rise, causes the anode of battery to be connected to cathode, and then realize the short circuit of battery cover board anode and cathode terminals,
Electric current increases after short circuit, the blown fuse in cover plate assembly, and inside battery open circuit, battery is scrapped, to realize anti-overcharge.And
The chemical substance of inside battery is caused to be decomposed when outside batteries temperature increases, for example electrolyte generates gas and causes in battery
Portion's pressure increase, there is also rotating sheet work to make battery voluntarily breaking problem, causes battery is unnecessary to scrap.
Summary of the invention
The purpose of this utility model is to propose a kind of battery high temperature-proof mistake for the above-mentioned problems in the prior art
The technical issues of cover plate assembly of effect, solution is how to prevent battery from unnecessary scrap occur.
The purpose of this utility model can be realized by the following technical scheme: a kind of cover board group of battery high temperature-proof failure
Part, including coping plate, conduct piece and elastic contact blade, the conduct piece insulation set open up in the coping plate on coping plate
There is through-hole, the edge of the elastic contact blade attaches to the coping plate and the sealing through-hole, the middle of the elastic contact blade
Contact block with protrusion setting, the contact block are arranged by through-hole and conduct piece face, which is characterized in that the contact block
There is the convex block of protrusion setting towards the middle at the top of conduct piece, the bottom of the conduct piece towards contact block is provided with blind
Hole, insertion is fixed with that insulation is non-conductive and dilatable dielectric high temperature expanding block at high operating temperatures in the blind hole, it is described absolutely
There is cavity, the convex block can be embedded into the cavity between the bottom of edge high-temperature expansion block and the opening of blind hole.
For battery when room temperature charges, dielectric high temperature expanding block is unaffected, and dielectric high temperature expanding block is located in blind hole, battery
When overcharging protection, convex block is embedded into cavity, and contact block contacts to form short circuit with conduct piece, and electric current increases after short circuit, cover board
Blown fuse in component, to realize anti-overcharge.When inside battery is in failure state, it is high that conduct piece passes to insulation
The thermal Finite of warm expanding block, dielectric high temperature expanding block does not expand, but inside battery acutely chemically reacts, and generates gas
Body, cell internal pressure increase to elastic contact blade overturning, battery plus-negative plate short circuit, the position fusing of anode fusing immediately, electricity
Pond is scrapped, and internal chemical reaction stops, and no longer generation gas, safety problem solve.When battery is under hot environment, i.e. battery
In the case that external environment is high, the heat of conduct piece is larger, and dielectric high temperature expanding block expands, and extends to the outside, dielectric high temperature
Expanding block is resisted against on contact block, be in contact contact block will not with conduct piece, and battery does not start short circuit operation, and battery is still just
Often work prevents battery from unnecessary scrap occur.It is described convex in the cover plate assembly that a kind of above-mentioned battery high temperature-proof fails
Block matches with cavity, when the convex block is embedded into cavity, has between the lateral wall of the convex block and the inner sidewall of blind hole
There is gap.The setting in gap guarantees that convex block will not be blocked with conduct piece, elastic contact blade is enable normally to contact with conduct piece,
Do not interfere with battery crosses charging protection function.
In the cover plate assembly that a kind of above-mentioned battery high temperature-proof fails, along the axial direction of blind hole, the depth of the cavity is not
Less than the thickness of convex block.This kind of structure, convex block can integrally be embedded into cavity, i.e., dielectric high temperature expanding block will not block convex
Block enables contact block to be in contact with conduct piece, does not interfere with battery and normally overcharges protection.
In the cover plate assembly that a kind of above-mentioned battery high temperature-proof fails, the top surface of the convex block is in planar and described
The top surface of convex block and the axis perpendicular of blind hole.When the expansion of dielectric high temperature expanding block is in contact with convex block, each position of convex block
Uniform force makes convex block in the process of moving there is no the problem of blocking with conduct piece is tilted, to keep insulation high
Warm expanding block can timely open contact block by convex block during expansion, separate contact block with conduct piece, open battery not
Dynamic short circuit operation, prevents battery from unnecessary scrap occur.In the cover plate assembly that a kind of above-mentioned battery high temperature-proof fails, edge
The axial direction of blind hole, the thickness of the contact block with a thickness of 1/8-1/2 of the convex block.Space is rationally utilized, and makes convex block and contact
Block integral strength is high.
In the cover plate assembly that a kind of above-mentioned battery high temperature-proof fails, the contact block and convex block are rounded, along institute
The radial direction of contact block is stated, the diameter of the convex block is the diameter of the contact block of 1/4-1/2.Space is rationally utilized, convex block is being moved
It is not easy to block in dynamic process.
In the cover plate assembly that a kind of above-mentioned battery high temperature-proof fails, the convex block, contact block and elastic contact blade are one
Body formula structure.Integral structure, firmness are high.
Compared with prior art, the cover plate assembly that battery high temperature-proof provided by the utility model fails is when battery is in high temperature
Under environment, i.e., in the case where outside batteries environment height, dielectric high temperature expanding block is expanded, and is extended to the outside, dielectric high temperature expansion
Block is resisted against on contact block, be in contact contact block will not with conduct piece, and battery does not start short circuit operation, the still normal work of battery
Make, prevents battery from unnecessary scrap occur.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the cover plate assembly of this battery high temperature-proof failure.
State diagram when Fig. 2 is the cover plate assembly dielectric high temperature expanding block expansion of this battery high temperature-proof failure.
In figure, 1, coping plate；2, conduct piece；3, elastic contact blade；4, through-hole；5, contact block；6, convex block；7, blind hole；8, absolutely
Edge high-temperature expansion block；9, cavity.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1 and Figure 2, the cover plate assembly of this battery high temperature-proof failure includes coping plate 1, conduct piece 2, elastic contact blade
3, contact block 5, convex block 6 and dielectric high temperature expanding block 8.
2 insulation set of conduct piece offers through-hole 4 on coping plate 1 in coping plate 1, the edge of elastic contact blade 3 attaches to
Coping plate 1 and sealing through-hole 4, the middle of elastic contact blade 3 have a contact block 5 of protrusion setting, contact block 5 by through-hole 4 with
The setting of 2 face of conduct piece, contact block 5 have the convex block 6 of protrusion setting towards the middle at the top of conduct piece 2, and convex block 6 connects
Contact block 5 and elastic contact blade 3 are an integral structure.In the present embodiment, contact block 5 and convex block 6 are rounded, along the diameter of contact block 5
To the diameter for the contact block 5 that the diameter of convex block 6 is 1/3, in actual production, the diameter of convex block 6 can be 1/4 or 1/2
The diameter of contact block 5, contact block 5 and convex block 6 can also be triangular in shape or square.
The bottom of conduct piece 2 towards contact block 5 is provided with blind hole 7, the top surface of convex block 6 in planar, and the top surface of convex block 6 with
The axis perpendicular of blind hole 7, insertion is fixed with that insulation is non-conductive and dilatable dielectric high temperature is swollen at high operating temperatures in blind hole 7
Expansion block 8, dielectric high temperature expanding block 8 are made of current material, do not repeat them here, the bottom of dielectric high temperature expanding block 8 and opening for blind hole 7
There is cavity 9 between mouthful.In the present embodiment, along the axial direction of blind hole 7, the depth of cavity 9 is greater than the thickness of convex block 6, convex block 6
With a thickness of the thickness of 1/4 contact block 5, in actual production, along the axial direction of blind hole 7, the depth of cavity 9 can be equal to convex block 6
Thickness, convex block 6 with a thickness of 1/8 or 1/2 contact block 5 thickness.Convex block 6 matches with cavity 9, when convex block 6 is embedded in
When into cavity 9, there is gap between the lateral wall of convex block 6 and the inner sidewall of blind hole 7.
As shown in Figure 1, battery is when room temperature charges, dielectric high temperature expanding block 8 will not expand, dielectric high temperature expanding block 8
In blind hole 7, contact block 5 and conduct piece 2 are normally contacted, and realization overcharges protection work.When inside battery is in failure state,
There is gap, the thermal Finite that dielectric high temperature expanding block 8 is subject to, dielectric high temperature expanding block 8 is not between conduct piece 2 and contact block 5
It expands, but cell internal pressure increases to the overturning of elastic contact blade 3, battery plus-negative plate short circuit, battery is scrapped, and internal chemical is anti-
It should stop, no longer generation gas, safety problem solve.It is under hot environment as shown in Fig. 2, working as battery, i.e. outside batteries ring
In the case that border is high, the heat of conduct piece 2 is larger, and dielectric high temperature expanding block 8 expands, and extends to the outside, dielectric high temperature expansion
Block 8 is resisted against on contact block 5, be in contact contact block 5 will not with conduct piece 2, and battery does not start short circuit operation, and battery is still just
Often work prevents battery from unnecessary scrap occur.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although coping plate 1, conduct piece 2, elastic contact blade 3, through-hole 4, contact block 5, convex block 6, blind is used more herein
The terms such as hole 7, dielectric high temperature expanding block 8, cavity 9, but it does not exclude the possibility of using other terms.Only using these terms
Merely to being more convenient to describe and explain the essence of the utility model；Being construed as any additional limitation is all
It is contrary to the spirit of the present invention.
Claims (7)
1. a kind of cover plate assembly of battery high temperature-proof failure, including coping plate (1), conduct piece (2) and elastic contact blade (3), described
Conduct piece (2) insulation set offers through-hole (4) in the coping plate (1) on coping plate (1), the elastic contact blade (3)
Edge attaches to the coping plate (1) and the sealing through-hole (4), and the middle of the elastic contact blade (3) has protrusion setting
Contact block (5), the contact block (5) is arranged by through-hole (4) and conduct piece (2) face, which is characterized in that the contact block
(5) there is the convex block (6) of protrusion setting towards the middle at the top of conduct piece (2), the conduct piece (2) is towards contact block
(5) bottom is provided with blind hole (7), and it is non-conductive and dilatable at high operating temperatures to be fixed with insulation for insertion in the blind hole (7)
Dielectric high temperature expanding block (8) has cavity between the bottom of the dielectric high temperature expanding block (8) and the opening of blind hole (7)
(9), the convex block (6) can be embedded into the cavity (9).
2. a kind of cover plate assembly of battery high temperature-proof failure according to claim 1, which is characterized in that the convex block (6)
Match with cavity (9), when the convex block (6) is embedded into cavity (9), lateral wall and blind hole (7) of the convex block (6)
There is gap between inner sidewall.
3. a kind of cover plate assembly of battery high temperature-proof failure according to claim 1, which is characterized in that along blind hole (7)
Axial, the depth of the cavity (9) is no less than the thickness of convex block (6).
4. a kind of cover plate assembly of battery high temperature-proof failure according to claim 1 or 2 or 3, which is characterized in that described convex
The top surface of block (6) is in planar, and the axis perpendicular of the top surface of the convex block (6) and blind hole (7).
5. a kind of cover plate assembly of battery high temperature-proof failure according to claim 1 or 2 or 3, which is characterized in that along blind hole
(7) axial direction, the thickness of the contact block (5) with a thickness of 1/8-1/2 of the convex block (6).
6. a kind of cover plate assembly of battery high temperature-proof failure according to claim 1 or 2 or 3, which is characterized in that described to connect
Contact block (5) and convex block (6) are rounded, the radial direction along the contact block (5), and the diameter of the convex block (6) is connecing for 1/4-1/2
The diameter of contact block (5).
7. a kind of cover plate assembly of battery high temperature-proof failure according to claim 1 or 2 or 3, which is characterized in that described convex
Block (6), contact block (5) and elastic contact blade (3) are an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821303289.4U CN208478394U (en) | 2018-08-13 | 2018-08-13 | A kind of cover plate assembly of battery high temperature-proof failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821303289.4U CN208478394U (en) | 2018-08-13 | 2018-08-13 | A kind of cover plate assembly of battery high temperature-proof failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208478394U true CN208478394U (en) | 2019-02-05 |
Family
ID=65209327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821303289.4U Expired - Fee Related CN208478394U (en) | 2018-08-13 | 2018-08-13 | A kind of cover plate assembly of battery high temperature-proof failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208478394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151729A (en) * | 2019-06-26 | 2020-12-29 | 泰连德国有限公司 | Carrier structure, cell contact system and method of manufacture |
-
2018
- 2018-08-13 CN CN201821303289.4U patent/CN208478394U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151729A (en) * | 2019-06-26 | 2020-12-29 | 泰连德国有限公司 | Carrier structure, cell contact system and method of manufacture |
| CN112151729B (en) * | 2019-06-26 | 2024-03-08 | 泰连德国有限公司 | Carrier structure, battery cell contact system and method of manufacture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20210813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |