CN219696645U - Soaking type power battery top cover - Google Patents
Soaking type power battery top cover Download PDFInfo
- Publication number
- CN219696645U CN219696645U CN202321141022.0U CN202321141022U CN219696645U CN 219696645 U CN219696645 U CN 219696645U CN 202321141022 U CN202321141022 U CN 202321141022U CN 219696645 U CN219696645 U CN 219696645U
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- CN
- China
- Prior art keywords
- explosion
- top cover
- blasting
- area
- region
- 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.)
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- 238000002791 soaking Methods 0.000 title claims abstract description 9
- 238000005422 blasting Methods 0.000 claims abstract description 41
- 238000004880 explosion Methods 0.000 claims abstract description 40
- 238000007654 immersion Methods 0.000 claims 9
- 239000007788 liquid Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000004146 energy storage Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- VVNXEADCOVSAER-UHFFFAOYSA-N lithium sodium Chemical compound [Li].[Na] VVNXEADCOVSAER-UHFFFAOYSA-N 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Abstract
The utility model relates to a top cover of a soaking type power battery, which comprises a top cover body, wherein an anti-explosion valve plate is arranged on the top cover body, and a second explosion area and at least one first explosion area are formed on the inner side of the anti-explosion valve plate; the utility model has simple structure, the arranged top cover of the immersed power battery is added with a second blasting area, and the opening reliability of the explosion-proof valve is enhanced.
Description
Technical Field
The utility model belongs to the technical field of power battery accessories, and particularly relates to a top cover of a soaking type power battery.
Background
In recent years, with the large-scale development of renewable energy sources such as wind power and photovoltaic, the renewable energy sources are increasingly connected into a power grid, and the development of energy storage becomes an important support for maintaining the safety and stability of a power system. Along with the increase of the sections of the electrochemical energy storage industry, as the energy storage batteries cause more and more fire accidents, a field of forensic fire explosion accidents remind people at any time, and electrochemical fire early prevention and safety protection measures are required to be studied.
In most of the fire-fighting methods and apparatuses related to the battery box level in the market at present, fire-fighting agent storage tanks are communicated and transported into the battery box through fire-fighting agent delivery pipelines and spray heads, for example, an automatic fire-extinguishing method and system for an energy storage system disclosed in patent document 202210706726.1 are used for spraying fire-extinguishing agent into the interior of a shell by connecting the fire-fighting pipelines with spray heads extending into the shell on a battery rack. The fire extinguishing device comprises a shell, a fire extinguishing device and an energy storage device, wherein the fire extinguishing device is characterized in that the fire extinguishing device is arranged on one side of the shell, all batteries in the shell cannot be covered, an inhibitor for fire extinguishing is sprayed out and is quickly gasified and dispersed in air to form mist, if an ignition point is far away from a spray head, the inhibitor can be spread to the battery position farthest from the spray head, so that the fire extinguishing device can influence the fire extinguishing and the effect of controlling the thermal runaway from the spray head to a certain extent.
Meanwhile, in the existing power battery, the explosion-proof valve is only provided with one outlet after being opened, and after the fire-fighting liquid in the immersion-type Pack is immersed in the battery core, the fire-fighting liquid cannot smoothly enter the battery core.
In view of the above, improvements are needed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides the immersed power battery top cover which is simple in structure, reasonable in design and capable of improving the safety performance of a battery.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a power battery top cap is defaulted to soaking, includes the top cap body, be provided with the explosion-proof valve block on the top cap body, the inboard of explosion-proof valve block is formed with second blasting region and at least one first blasting region, and the second blasting region is located the intermediate zone of explosion-proof valve block, and the second blasting region is greater than the first blasting region in the ascending height of vertical direction.
As a preferred embodiment of the present utility model, two first blasting areas are provided, and the second blasting area is located between the two first blasting areas.
As a preferred embodiment of the present utility model, the height of the second burst region in the vertical direction is smaller than the height of the cell post.
As a preferable mode of the utility model, the area of the second blasting area is 1/2 of the area of the first blasting area.
As a preferred embodiment of the present utility model, the second burst region has a cylindrical shape.
As a preferred embodiment of the present utility model, the first and second blasting areas are each independently in a closed loop structure.
As a preferred embodiment of the present utility model, the cross sections of the first and second blasting areas are each independently trapezoidal structures.
As a preferred scheme of the utility model, the explosion-proof valve further comprises an explosion-proof valve protection sheet, wherein the explosion-proof valve protection sheet covers the first explosion area and the second explosion area of the explosion-proof valve sheet.
As a preferable scheme of the utility model, the anti-explosion valve protection sheet is in interference fit with the anti-explosion valve plate.
As a preferable scheme of the utility model, when the explosion-proof valve protection sheet is placed on the explosion-proof valve sheet, the explosion-proof valve protection sheet positioned on the first explosion area and the top cover body are positioned on the same horizontal plane.
The beneficial effects of the utility model are as follows:
1. the utility model has simple structure, the arranged top cover of the immersed power battery is added with a second blasting area, and the opening reliability of the explosion-proof valve is enhanced.
2. The utility model has ingenious design, and the first explosion area and the second explosion area on the top cover of the immersed power battery are not at the same height, so that the gas channel and the liquid channel are distinguished, and the turbulent flow of the fire fighting liquid during immersing is avoided.
Drawings
FIG. 1 is a schematic diagram (I) of an embodiment of the present utility model;
FIG. 2 is a schematic diagram (II) of an embodiment of the present utility model;
reference numerals in the drawings: the explosion-proof valve comprises a top cover body 1, an explosion-proof valve plate 2, an explosion-proof valve protection plate 3, a first explosion region 20 and a second explosion region 21.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.
In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
This patent contains the power battery top cap of soaking and defaulting formula. The failure area of traditional explosion-proof valve block is concentrated on a plane entirely, leads to gas channel and liquid channel to detour each other when fire control liquid soaks and defaults, has reduced and has soaked and defaults efficiency.
The battery explosion-proof valve plate of the embodiment of the disclosure is of a diaphragm structure, is attached to the upper side of the battery explosion-proof valve and is used for balancing the pressure difference between the inside and the outside of the explosion-proof valve and preventing electrolyte from immersing into the explosion-proof valve.
Specifically, as shown in fig. 1-2, a top cover of a soaking power battery comprises a top cover body 1, wherein an anti-explosion valve plate 2 is arranged on the top cover body 1, a second explosion region 21 and at least one first explosion region 20 are formed on the inner side of the anti-explosion valve plate 2, and the second explosion region 21 is positioned in the middle region of the anti-explosion valve plate 2; the utility model has simple structure, the arranged top cover of the immersed power battery is added with a second blasting area, and the opening reliability of the explosion-proof valve is enhanced.
Specifically, two first blasting areas 20 are provided, and a second blasting area 21 is located between the two first blasting areas 20; wherein, the second blasting area 21 is also provided with a bursting disc which is of a immersed Pack design,
in the embodiment of the present disclosure, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, to which the embodiment of the present disclosure is not limited. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as embodiments of the present disclosure are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, as well as embodiments of the present disclosure are not limited in this regard.
The explosion-proof valve is used as a common pressure relief mechanism and is usually arranged on the end cover of the battery cell, and for example, the explosion-proof valve can be a part of the flat plate surface of the end cover or can be welded with the flat plate surface of the end cover. For example, the explosion-proof valve may have a score having a depth smaller than the thickness of the other region of the explosion-proof valve except for the score so as to not penetrate the explosion-proof valve, i.e., the explosion-proof valve is hermetically combined with the end cap, and a case for placing the electrode assembly is formed by connecting the end cap with the case at the opening of the case, and the space formed by the case is hermetically sealed. In the shell, when the gas generated by the battery monomer is too much, the gas expands to enable the gas pressure in the shell to rise to exceed a preset value, the explosion-proof valve is split at the notch to lead the inside and the outside of the shell to be communicated, and the gas is released outwards through the split part of the explosion-proof valve, so that explosion is avoided.
The valve plate 2 may be made of PP (polypropylene), PC (Polycarbonate), PET (Polyethylene terephthalate), or polyester resin, and the thickness may be 0.08mm to 0.4mm, for example.
Wherein the height of the second burst area 21 in the vertical direction is greater than the height of the first burst area 20 in the vertical direction, thereby distinguishing the gas passage from the liquid passage, and thus avoiding the turbulent flow of the fire fighting liquid at the time of soaking.
The height of the second blasting area 21 is between 3mm and 6mm, and 3.5mm is the most preferable, and meanwhile, the height of the second blasting area 21 in the vertical direction is smaller than the height of the cell pole, otherwise, the bus bar interference can be caused; and the bus is a power module electric connection part with a multi-layer laminated structure, and can be connected with power distribution positions of a plurality of circuits.
The area of the second burst area 21 is 1/2 of the area of the first burst area 20; in this embodiment, the second burst region 21 is cylindrical in shape, and the diameter of the top surface of the cylinder is between 5 and 12mm, most preferably 7 mm.
The first blasting area 20 and the second blasting area 21 are respectively and independently of closed loop structures, and by means of the closed loop structures, mutual distinction between the first blasting area 20 and the second blasting area 21 is achieved, and for improving deformation resistance of the first blasting area 20 and the second blasting area 21, cross sections of the first blasting area 20 and the second blasting area 21 are respectively and independently of trapezoid structures.
The second burst region 21 has a score depth of between 0.1 and 0.5mm, most preferably 0.3 mm.
The immersed power battery top cover further comprises an explosion-proof valve protection sheet 3, and the explosion-proof valve protection sheet 3 covers the first explosion area 20 and the second explosion area 21 of the explosion-proof valve sheet 2; when the anti-explosion valve protection sheet 3 is placed on the anti-explosion valve sheet 2, the upper end surface of the anti-explosion valve protection sheet 3 and the upper end surface of the anti-explosion valve sheet 2 are in the same horizontal plane.
When the battery cell is out of control, the first explosion region 20 and the second explosion region 21 at the bottom are opened; after the system triggers and soaks the fire control, fire control liquid begins to water Pack, when fire control liquid highly soaks to the electric core height, fire control liquid can enter into the electric core inside from first blasting region 20, simultaneously, inside gas is discharged outside from second blasting region 21, thereby gas runner and liquid runner can not interfere and lead to the detouring.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more herein: the terms top cap body 1, vent panel 2, vent valve protection panel 3, first burst region 20, second burst region 21, etc. do not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (10)
1. The utility model provides a soaking and defaulting type power battery top cap, includes top cap body (1), its characterized in that: an anti-explosion valve plate (2) is arranged on the top cover body (1), and a second explosion region (21) and at least one first explosion region (20) are formed on the inner side of the anti-explosion valve plate (2); the second explosion region (21) is positioned in the middle region of the anti-explosion valve plate (2); the height of the second blasting region (21) in the vertical direction is greater than the height of the first blasting region (20) in the vertical direction.
2. The immersion power cell top cover as claimed in claim 1, wherein: the first blasting areas (20) are two, and the second blasting areas (21) are located between the two first blasting areas (20).
3. The immersion power cell top cover as claimed in claim 1, wherein: the height of the second blasting area (21) in the vertical direction is smaller than the height of the battery cell pole.
4. The immersion power cell top cover as claimed in claim 1, wherein: the area of the second blasting area (21) is 1/2 of the area of the first blasting area (20).
5. The immersion power cell top cover as claimed in claim 1, wherein: the second burst region (21) has a cylindrical shape.
6. The immersion power cell top cover as claimed in claim 1, wherein: the first and second burst areas (20, 21) are each independently closed loop structures.
7. The immersion power cell top cover as claimed in claim 1, wherein: the cross sections of the first blasting area (20) and the second blasting area (21) are respectively trapezoidal structures.
8. The immersion power cell roof according to any one of claims 1 to 7, wherein: the explosion-proof valve further comprises an explosion-proof valve protection sheet (3), and the explosion-proof valve protection sheet (3) covers the first explosion area (20) and the second explosion area (21) of the explosion-proof valve sheet (2).
9. The immersion power cell top cover as claimed in claim 8, wherein: the anti-explosion valve protection sheet (3) is in interference fit with the anti-explosion valve sheet (2).
10. The immersion power cell top cover as claimed in claim 9, wherein: when the explosion-proof valve protection sheet (3) is placed on the explosion-proof valve sheet (2), the explosion-proof valve protection sheet (3) positioned on the first explosion region (20) and the top cover body (1) are positioned on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321141022.0U CN219696645U (en) | 2023-05-12 | 2023-05-12 | Soaking type power battery top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321141022.0U CN219696645U (en) | 2023-05-12 | 2023-05-12 | Soaking type power battery top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696645U true CN219696645U (en) | 2023-09-15 |
Family
ID=87970636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321141022.0U Active CN219696645U (en) | 2023-05-12 | 2023-05-12 | Soaking type power battery top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696645U (en) |
-
2023
- 2023-05-12 CN CN202321141022.0U patent/CN219696645U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |