CN209199993U - Cover plate of power battery structure with gas storage function - Google Patents
Cover plate of power battery structure with gas storage function Download PDFInfo
- Publication number
- CN209199993U CN209199993U CN201822243229.4U CN201822243229U CN209199993U CN 209199993 U CN209199993 U CN 209199993U CN 201822243229 U CN201822243229 U CN 201822243229U CN 209199993 U CN209199993 U CN 209199993U
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- Prior art keywords
- power battery
- chamber
- cover plate
- storage function
- gas
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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)
- Secondary Cells (AREA)
Abstract
The utility model provides a kind of cover plate of power battery structure with gas storage function, it is sealed on the battery case with the reaction chamber for accommodating reaction solution, comprising: lid, pole block is equipped in lid, and in being formed with chamber in lid, which is connected to reaction chamber by the gas passage with air valve, and when original state, the indoor pressure of chamber is less than the pressure in reaction chamber, so that the gas generated in reaction chamber enters in chamber because pressure difference opens air valve.The cover plate of power battery smart structural design with gas storage function of the utility model, and easy processing manufactures, and can effectively prevent the expansion of housing of power cell, so that the service life of power battery can be improved, and then has preferable practicability.
Description
Technical field
The utility model relates to power battery technology field, in particular to a kind of cover plate of power battery with gas storage function
Structure.
Background technique
Square lithium ion power battery is one of electric automobile energy storage device of current mainstream, and power battery performance is straight
The relevant parameter for influencing dynamical system is connect, and then influences the riding experience of consumer.Power battery is in use because of inside
Chemical reaction, trace water or other overreacts consumption electrolyte etc. generate CO, C2H4, C2H6, CO2, H2 gas,
Air pressure inside is caused to increase, housing of power cell external drum, thickness increases, and influences power battery service life and mould group, PACK knot
Structure performance.
Currently used method is to add gas inhibitor in the electrolytic solution, or reinforce power battery outer structural parts and come
Battery producing gas is inhibited perhaps to deform or increase exhaust apparatus discharge pernicious gas.Since power battery external shell structure adds
It will lead to the reduction of power battery interior space, energy density decline by force；Additive be easy to cause power battery recycle and it is forthright again
It can decline；PACK circuit damages caused by exhaust apparatus exhaust is easy to cause external water to enter or be discharged because of gas, and it is hidden to generate safety
Suffer from.
Utility model content
In view of this, the utility model is directed to a kind of cover plate of power battery structure with gas storage function, to reduce
Expansion of the power battery in normal use, to improve the service life of power battery.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of cover plate of power battery structure with gas storage function is sealed on the battery with the reaction chamber for accommodating reaction solution
On shell, comprising:
Lid, Yu Suoshu lid are equipped with pole block；
Chamber is formed in the lid, and the chamber is connected to the reaction chamber by the gas passage with air valve,
And when original state, the indoor pressure of chamber is less than the pressure in the reaction chamber, so as to generated in the reaction chamber
Gas enters in the chamber because pressure difference opens air valve.
Further, the air valve is the check valve for constituting the gas passage one-way conduction.
Further, when original state, the chamber is vacuum state.
Further, the chamber includes the holding tank with open end being stamped and formed out by the bottom of the lid, with
And the open end is sealed on to seal the connection sheet of the holding tank；The gas passage connection is arranged in the connection sheet
On.
Further, gas absorption object is filled in Yu Suoshu chamber.
Further, the gas absorption object includes hydrogen storage material, CO2 adsorbent material, CO adsorbent material, methane adsorption material
At least one of material, ethane adsorbent material.
Further, the hydrogen storage material includes at least one of hydrogen bearing alloy, coordinating metal hydride.
Further, the CO2 adsorbent material include carbon-based adsorbent, it is zeolite, metal-organic framework material, porous
At least one of organic polymer, solid amine absorption agent.
Further, the CO adsorbent material includes graphene, active carbon and CuCl2In molecular sieve, metal complex
It is at least one.
Further, the methane adsorption material includes active carbon, activated carbon fiber, zeolite molecular sieve, KMnO4And Ag
(I), at least one of Cu (I) molecular sieve.
Compared with the existing technology, the utility model has the advantage that
(1) the cover plate of power battery structure described in the utility model with gas storage function, by cover plate of power battery
The chamber of upper setting and the air valve of connecting chamber, other that can generate in use power battery are discharged by air valve,
To prevent stopping power inside battery air pressure increase, cause the external drum of housing of power cell.The utility model with gas storage function
Cover plate of power battery smart structural design, and easy processing manufactures, and can effectively prevent the external drum of housing of power cell, so as to
The service life of power battery is improved, and then there is preferable practicability.
(2) check valve is set, is on the one hand used as gas delivery passage, allows the gas of power battery interior can be by unidirectional
Valve enters in chamber, on the other hand electrolyte is prevented to enter.To keep closing to power battery interior, power battery is improved
Leakproofness.
(3) setting chamber is vacuum state, is conducive to the leakproofness for keeping chamber, to prevent external liquid because of gas
It is discharged and enters chamber.
(4) gas absorption object is filled in chamber, to be conducive to the gas that absorption battery generates in use, from
And it effectively prevent power battery interior air pressure excessive.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the structure that application has the cover plate of power battery structure with gas storage function described in the utility model embodiment
Schematic diagram；
Fig. 2 is the A-A cross-sectional view in Fig. 1；
Description of symbols:
1- holding tank, 2- gas passage, 3- connection sheet, 4- gas absorption object；
10- lid.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The utility model relates to a kind of cover plate of power battery structure with gas storage function, being sealed on has receiving reaction solution
Reaction chamber battery case on, a kind of exemplary structure is as shown in Figure 1 and Figure 2, this has the power battery cover of gas storage function
Hardened structure includes lid 10, and Yu Suoshu lid 10 is equipped with pole block not shown in the figure, and in being formed with chamber in lid 10,
The chamber is connected to reaction chamber by the gas passage 2 with air valve, and when original state, and the indoor pressure of chamber is less than reaction
Intracavitary pressure, so that the gas generated in reaction chamber enters in chamber because pressure difference opens air valve.Wherein, for holding chamber
The leakproofness of room, in the initial state, the chamber are vacuum state.
On specific structure, as shown in Fig. 2, it is stamped and formed out the holding tank 1 with open end in the bottom of cover plate of power battery,
And having the connection sheet 3 of sealing cover holding tank 1 in open end capping, the connection of gas passage 2 above-mentioned is arranged in connection sheet 3.?
It is the air valve being connected in connection sheet 3, wherein air valve is the check valve for constituting 2 one-way conduction of These gases channel, holding tank
1 encloses composition chamber above-mentioned with connection sheet 3.By be arranged check valve, on the one hand as can gas delivery passage, only allow power
The gas of inside battery can be entered in chamber by check valve, on the other hand electrolyte can be prevented to enter.To power battery
Inside keeps closing, improves the leakproofness of power battery.
In the present embodiment, it in order to be conducive to the gas that absorption battery generates in use, is filled in chamber
Gas absorption object 4.Wherein, gas absorption object 4 includes hydrogen storage material, CO2 adsorbent material, CO adsorbent material, methane adsorption material
At least one of material, ethane adsorbent material.Gas absorption object 4 in the present embodiment include the hydrogen storage material mentioned among the above,
CO2 adsorbent material, CO adsorbent material, methane adsorption material and ethane adsorbent material.
The hydrogen storage material includes at least one of hydrogen bearing alloy, coordinating metal hydride, and wherein hydrogen bearing alloy includes:
The hydrogen bearing alloys such as rare earth hydrogen storage alloy, titanium base hydrogen storage alloy, zirconium alloy, magnesium-based, coordinating metal hydride include alanate
With the materials such as boron hydride.The CO2 adsorbent material includes carbon-based adsorbent, zeolite, metal-organic framework material, porous
At least one of organic polymer, solid amine absorption agent, the CO adsorbent material include graphene, active carbon and CuCl2Point
Son sieve, at least one of metal complex, the methane adsorption material include active carbon, activated carbon fiber, zeolite molecular sieve,
KMnO4And at least one of AgI, CuI molecular sieve.In the present embodiment, preferably gas storage material include magnesium base alloy, active carbon,
The mixtures such as KMnO4, porous PEI and molecular sieve.
Connection sheet 3 in the present embodiment is with the compression strength with 0.1-0.3MPa, to seal hydrogen storage material, while
Cross indentation is designed on the surface of connection sheet 3, and when battery temperature is higher than 100 DEG C, gas storage material discharges gas, helps power battery
Break through unshowned explosion-proof valve pressure release on battery cover board.
It should be noted that gas storage material above-mentioned can be used as material granule presence, it can also individually be processed as structural member and deposit
In inside battery or in any other structures of the capsule form there are battery.In addition, the chamber of gas storage material is located at cover board
On, shape is without particular requirement, preferably rectangle and circle.In addition, chamber structure is in addition to the recessed appearance for the punching press on lid 10
It receives slot 1, can also be the structure of outer projection, or be adapted as the double-layer structure that explosion-proof valve adds built-in gas storage material.Meanwhile air valve
In addition to that also can be also two-way gas ventilation valve, on the one hand can not only prevent hydrogen storage particle from blocking, can also prevent from being electrolysed for check valve
Liquid penetrates into, on the other hand the releasable gas of hydrogen storage material when battery is out of control, helps battery discharge.
When carrying out tissue battery using the battery cover plate structure with gas storage function of the utility model, first by gas
Channel 2 is sealed in connection sheet 3, and then gas storage material is filled in holding tank 1, then connection sheet 3 is laser-welded to power
On battery cover board, while by 1 vacuum state of holding tank, the group with the cover plate of power battery of gas storage function is completed at this time
Then dress carries out remaining assembly, negative pressure preliminary filling and chemical conversion step of power battery etc..
The cover plate of power battery structure with gas storage function of the utility model, it is ingenious in design, pass through cover plate of power battery
The pernicious gas generated in power battery normal use is absorbed into cover plate of power battery by interior setting gettering material, from
And cell expansion is reduced, and then improve the service life of power battery.The power battery with gas storage function of the utility model
Covering plate structure has structure simple, easy to use, and good airproof performance, and the service life of power battery can be improved, to have
Preferable practicability.
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 (10)
1. a kind of cover plate of power battery structure with gas storage function is sealed on the battery case with the reaction chamber for accommodating reaction solution
On body, it is characterised in that include
Lid (10), Yu Suoshu lid (10) are equipped with pole block；
Chamber is formed in the lid (10), and the chamber is connected to the reaction by the gas passage (2) with air valve
Chamber, and when original state, the indoor pressure of chamber is less than the pressure in the reaction chamber, so as to generate in the reaction chamber
Gas because pressure difference open air valve due to enter in the chamber.
2. the cover plate of power battery structure according to claim 1 with gas storage function, it is characterised in that: the air valve is
Constitute the check valve of the gas passage (2) one-way conduction.
3. the cover plate of power battery structure according to claim 1 with gas storage function, it is characterised in that: in original state
When, the chamber is vacuum state.
4. the cover plate of power battery structure according to claim 1 with gas storage function, it is characterised in that: the chamber packet
Include the holding tank (1) with open end being stamped and formed out by the bottom of the lid (10), and be sealed on the open end with
Seal the connection sheet (3) of the holding tank (1)；Gas passage (2) connection is arranged on the connection sheet (3).
5. the cover plate of power battery structure according to claim 1 with gas storage function, it is characterised in that: Yu Suoshu chamber
It is interior to be filled with gas absorption object (4).
6. the cover plate of power battery structure according to claim 5 with gas storage function, it is characterised in that: the gas is inhaled
Addendum (4) include hydrogen storage material, CO2 adsorbent material, CO adsorbent material, methane adsorption material, in ethane adsorbent material at least
It is a kind of.
7. the cover plate of power battery structure according to claim 6 with gas storage function, it is characterised in that: the hydrogen storage material
Material includes at least one of hydrogen bearing alloy, coordinating metal hydride.
8. the cover plate of power battery structure according to claim 6 with gas storage function, it is characterised in that: the CO2 inhales
Enclosure material include carbon-based adsorbent, zeolite, metal-organic framework material, porous organic polymer, in solid amine absorption agent
At least one.
9. the cover plate of power battery structure according to claim 6 with gas storage function, it is characterised in that: the CO absorption
Material includes graphene, active carbon and CuCl2At least one of molecular sieve, metal complex.
10. the cover plate of power battery structure according to claim 6 with gas storage function, it is characterised in that: the methane
Adsorbent material includes active carbon, activated carbon fibre, zeolite molecular sieve, KMnO4With Ag (I), in Cu (I) molecular sieve at least one
Kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822243229.4U CN209199993U (en) | 2018-12-28 | 2018-12-28 | Cover plate of power battery structure with gas storage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822243229.4U CN209199993U (en) | 2018-12-28 | 2018-12-28 | Cover plate of power battery structure with gas storage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209199993U true CN209199993U (en) | 2019-08-02 |
Family
ID=67430902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822243229.4U Active CN209199993U (en) | 2018-12-28 | 2018-12-28 | Cover plate of power battery structure with gas storage function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209199993U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448059A (en) * | 2019-08-27 | 2021-03-05 | 比亚迪股份有限公司 | Battery and battery pack |
| CN112531297A (en) * | 2019-08-27 | 2021-03-19 | 比亚迪股份有限公司 | Battery and battery pack |
| WO2022246841A1 (en) * | 2021-05-28 | 2022-12-01 | 宁德时代新能源科技股份有限公司 | Gas adsorption apparatus, end cover assembly, battery cell, battery, and electrical device |
| CN116387714A (en) * | 2023-06-05 | 2023-07-04 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116387654A (en) * | 2023-06-05 | 2023-07-04 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric equipment |
-
2018
- 2018-12-28 CN CN201822243229.4U patent/CN209199993U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448059A (en) * | 2019-08-27 | 2021-03-05 | 比亚迪股份有限公司 | Battery and battery pack |
| CN112531297A (en) * | 2019-08-27 | 2021-03-19 | 比亚迪股份有限公司 | Battery and battery pack |
| WO2022246841A1 (en) * | 2021-05-28 | 2022-12-01 | 宁德时代新能源科技股份有限公司 | Gas adsorption apparatus, end cover assembly, battery cell, battery, and electrical device |
| KR20220161481A (en) * | 2021-05-28 | 2022-12-06 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | Gas adsorption devices, end cap assemblies, battery cells, batteries and electrical devices |
| CN115699430A (en) * | 2021-05-28 | 2023-02-03 | 宁德时代新能源科技股份有限公司 | Gas adsorption device, end cover assembly, battery monomer, battery and electric equipment |
| KR102594105B1 (en) * | 2021-05-28 | 2023-10-24 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | Gas adsorption devices, end cap assemblies, battery cells, batteries and electrical devices |
| CN116387714A (en) * | 2023-06-05 | 2023-07-04 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116387654A (en) * | 2023-06-05 | 2023-07-04 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric equipment |
| CN116387714B (en) * | 2023-06-05 | 2023-08-25 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116387654B (en) * | 2023-06-05 | 2023-09-26 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric equipment |
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