CN219419394U - Battery module cover plate and battery module - Google Patents
Battery module cover plate and battery module Download PDFInfo
- Publication number
- CN219419394U CN219419394U CN202320825730.XU CN202320825730U CN219419394U CN 219419394 U CN219419394 U CN 219419394U CN 202320825730 U CN202320825730 U CN 202320825730U CN 219419394 U CN219419394 U CN 219419394U
- Authority
- CN
- China
- Prior art keywords
- battery module
- cover plate
- valve opening
- opening gas
- groove
- 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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Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims 1
- 239000012634 fragment Substances 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000004200 deflagration Methods 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 description 4
- 241000883990 Flabellum Species 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of secondary batteries, and discloses a battery module cover plate and a battery module. The lower cover plate is provided with a through groove, the through groove is positioned above the explosion-proof valve of the battery module, the flow dividing piece is rotatably arranged in the through groove and used for separating metal fragments in valve opening gas which breaks through the explosion-proof valve, and a gas guiding channel for valve opening gas circulation is formed between the upper cover plate and the lower cover plate. Through setting up the gas direction passageway to avoid the valve opening gas of high temperature high pressure to collect, set up the reposition of redundant personnel piece on lower apron, when making valve opening gas break through explosion-proof valve, the metal piece of high temperature is blocked by the reposition of redundant personnel piece, separates from valve opening gas, thereby reduces the risk that high temperature metal piece ignites valve opening gas emergence deflagration, and can blow the reposition of redundant personnel piece rotation when valve opening gas passes through the reposition of redundant personnel piece, make valve opening gas's injection velocity and pressure reduce, avoid valve opening gas to cause the damage to other parts.
Description
Technical Field
The utility model relates to the technical field of secondary batteries, in particular to a battery module cover plate and a battery module.
Background
When the square battery module is designed at present, a battery module upper cover is usually designed, a plastic material is adopted for the conventional battery module upper cover, and the battery module upper cover covers the tabs in an integral sticking mode to ensure the finger touch prevention requirement of the IPXXB. The upper cover of the battery module is generally provided with an exhaust hole at a position corresponding to the explosion-proof valve, so that when the explosion-proof valve is broken by high-pressure gas in the battery, the high-pressure gas can be discharged from the exhaust hole.
However, when the explosion-proof valve is broken by the valve opening gas, high-temperature metal fragments can be generated and flushed out along with the valve opening gas, and the high-temperature metal fragments have the risk of igniting the valve opening gas to cause deflagration.
Disclosure of Invention
The utility model aims to provide a battery module cover plate and a battery module, which are used for separating high-temperature metal scraps in valve gas, avoiding the high-temperature metal scraps from igniting the valve gas and eliminating the risk of deflagration.
To achieve the purpose, the utility model adopts the following technical scheme:
in one aspect, a battery module cover plate is provided comprising:
the battery module comprises a lower cover plate, a battery module and a control module, wherein the lower cover plate is fixedly arranged at the top of the battery module, a through groove is formed in the lower cover plate, the battery module consists of a plurality of electric cores, explosion-proof valves are arranged on the electric cores, and the explosion-proof valves of the electric cores are arranged below the through groove;
the flow dividing piece is rotatably arranged in the through groove and is used for separating metal scraps in valve opening gas which breaks through the explosion-proof valve;
the upper cover plate is coated on the outer sides of the lower cover plate and the battery module, and a gas guide channel for valve opening gas circulation is formed between the upper cover plate and the lower cover plate.
Optionally, the shunt piece includes the connecting rod and with the flabellum piece that the connecting rod is connected, the connecting rod rotationally locates in the logical inslot.
Optionally, the flabellum is equipped with a plurality ofly, and a plurality of flabellum is followed the circumferencial direction equidistant setting of connecting rod.
Optionally, the fan blade is a wave plate.
Optionally, the fan blade is a straight flat plate.
Optionally, two ends of the connecting rod are provided with insertion protrusions, the side wall, close to the insertion protrusions, of the through groove is provided with a connection through hole, and the insertion protrusions are rotatably inserted into the connection through hole.
Optionally, the lower cover plate is further provided with a bearing, the bearing is embedded in the connecting through hole, and the insertion protrusion is inserted in an inner hole of the bearing.
Optionally, the battery module cover plate further comprises a locking piece, the locking piece rotatably penetrates through the side wall of the through groove, connecting threaded holes are formed in two ends of the connecting rod, and one end of the locking piece penetrates through the side wall of the through groove to be in threaded connection with the connecting threaded holes.
Optionally, the through groove is further provided with a baffle plate extending towards the explosion-proof valve, and the baffle plate encloses a ventilation channel containing the explosion-proof valve.
Another aspect provides a battery module comprising the battery module cover plate as claimed in any one of the above.
The utility model has the beneficial effects that:
the utility model provides a battery module cover plate and a battery module, wherein the cover plate of the battery module adopts a double-layer structure of combining an upper cover plate and a lower cover plate, so that a gas guide channel for guiding valve opening gas is formed between the upper cover plate and the lower cover plate, thereby avoiding the collection of the valve opening gas at high temperature and high pressure, and a rotatable flow dividing piece is arranged on the lower cover plate, so that when the valve opening gas breaks through an explosion-proof valve, high-temperature metal scraps are blocked by the flow dividing piece, and the valve opening gas is separated from the high-temperature metal scraps, thereby reducing the risk of explosion caused by the ignition of the valve opening gas by the high-temperature metal scraps, and reducing the spraying speed and pressure of the valve opening gas by blowing the flow dividing piece to rotate when the valve opening gas passes through the flow dividing piece, thereby avoiding the damage to the upper cover plate and other parts.
Drawings
Fig. 1 is a general assembly view of a battery module cover plate of the present utility model;
fig. 2 is a sectional view of a battery module cover plate of the present utility model;
FIG. 3 is a schematic view of the installation of the diverter and lower cover plate of the present utility model;
FIG. 4 is a schematic view of the structure of the splitter of the present utility model;
fig. 5 is a schematic structural view of the lower cover plate of the present utility model.
In the figure:
1. a lower cover plate; 11. a through groove; 12. a baffle;
2. a shunt; 21. a connecting rod; 22. fan blades;
3. an upper cover plate;
4. a gas guide channel;
5. a locking member.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
In order to separate high-temperature metal scraps in valve gas and avoid the occurrence of explosion phenomenon caused by ignition of the valve gas by the high-temperature metal scraps, the embodiment provides a battery module cover plate and a battery module.
As shown in fig. 1 to 5, the battery module cover plate includes a lower cover plate 1, a current divider 2, and an upper cover plate 3. The lower cover plate 1 is fixedly arranged at the top of the battery module, the lower cover plate 1 is provided with a through groove 11, the battery module is composed of a plurality of electric cores, explosion-proof valves are arranged on the electric cores, the explosion-proof valves of the electric cores are arranged below the through groove 11, the flow dividing piece 2 is rotatably arranged in the through groove 11, the flow dividing piece 2 is used for separating metal fragments in valve opening gas which breaks through the explosion-proof valves, the upper cover plate 3 is coated on the outer sides of the lower cover plate 1 and the battery module, and a gas guide channel 4 for valve opening gas circulation is formed between the upper cover plate 3 and the lower cover plate 1. The cover plate of the battery module adopts a double-layer structure formed by combining the upper cover plate 3 and the lower cover plate 1, a gas guide channel 4 for dredging valve opening gas is formed between the upper cover plate 3 and the lower cover plate 1, so that high-temperature and high-pressure valve opening gas is prevented from being collected, and a rotatable flow dividing piece 2 is arranged on the lower cover plate 1, so that when the valve opening gas breaks through an explosion-proof valve, high-temperature metal scraps are blocked by the flow dividing piece 2, the valve opening gas is separated from the high-temperature metal scraps, the risk of explosion of the high-temperature metal scraps igniting the valve opening gas is reduced, and the valve opening gas is blown to rotate when passing through the flow dividing piece 2, so that the injection speed and the pressure of the valve opening gas are reduced, and damage to the upper cover and other parts caused by the valve opening gas is avoided.
In this embodiment, a part of the valve opening gas is led to the cooling system of the battery module by the gas guiding channel 4, and the valve opening gas is cooled by the cooling system, so that the damage to other parts caused by the high temperature of the valve opening gas is avoided. And in order to further reduce the loss caused by knocking, the upper cover plate 3 and the lower cover plate 1 are made of fireproof heat-insulating materials, and illustratively, aluminum silicate fibers, mullite fibers, high silica fibers and the like can be selected. The upper cover plate 3 and the lower cover plate 1 can also serve the same purpose by being coated with a barrier heat insulation coating. It should be noted that the flow divider 2 is located above the explosion-proof valve, so that the distance between the axis of the flow divider 2 and the explosion-proof valve is greater than the maximum outer contour of the flow divider 2, so that collision of the flow divider 2 with the explosion-proof valve is avoided.
Alternatively, as shown in fig. 2 and 4, the splitter 2 includes a connecting rod 21 and a fan blade 22 connected to the connecting rod 21, and the connecting rod 21 is rotatably disposed in the through groove 11. The valve opening gas drives the transfer rod to rotate by blowing the fan blade 22, so that the injection speed and pressure of the valve opening gas are reduced, and the valve opening gas is prevented from damaging the upper cover and other parts.
Further, as shown in fig. 4, a plurality of fan blades 22 are provided, and a plurality of fan blades 22 are provided at equal intervals along the circumferential direction of the connecting rod 21. By arranging the plurality of fan blades 22 which are distributed at equal intervals, the pressure of the valve opening gas blown onto the fan blades 22 is ensured to be the same, and the fan blades 22 are arranged in a plurality, so that when the valve opening gas blowing connecting rod 21 rotates, the valve opening gas is discharged in a segmented mode, and the injection pressure and the injection speed of the valve opening gas are effectively reduced. In the present embodiment, 4 fan blades 22 are provided, which are distributed at intervals of 90 °, and in other embodiments, a plurality of fan blades 22, for example, 6 fan blades 22, may be provided, with an interval angle of 60 °.
Further, the fan blades 22 are wave plates. By arranging the wave plate, the contact area between the valve opening gas and the fan blades 22 is enlarged, and the blowing force of the valve opening gas is ensured. In this embodiment, the fan blade 22 may be a long wave plate disposed along the length direction of the connecting rod 21, and in other embodiments, the fan blade 22 may be a plurality of short wave plates disposed at intervals along the length direction of the connecting rod 21.
Alternatively, the fan blade 22 is a straight plate, and the fan blade 22 is easy to obtain and process by selecting the straight plate, so that the manufacturing cost of the fan blade 22 can be effectively reduced. In this embodiment, the fan blade 22 is a long straight plate disposed along the length direction of the connecting rod 21, and in other embodiments, the fan blade 22 may be a plurality of short straight plates disposed at intervals along the length direction of the connecting rod 21.
Optionally, two ends of the connecting rod 21 are provided with insertion protrusions, a connecting through hole is formed in a side wall, close to the insertion protrusions, of the through groove 11, and the insertion protrusions are rotatably inserted into the connecting through hole. Through the use of structural connection, the use of connecting pieces is reduced, the manufacturing cost is reduced, the installation space of the connecting pieces is saved, and the compactness of the whole device is improved.
Further, the lower cover plate 1 is also provided with a bearing, the bearing is embedded in the connecting through hole, and the insertion protrusion is inserted in an inner hole of the bearing. By providing bearings, the flexibility of rotation of the connecting rod 21 is increased. The insertion protrusion is prevented from being directly inserted into the connecting through hole, so that the friction force is excessive, and the valve opening gas cannot blow the connecting rod 21 to rotate.
Optionally, as shown in fig. 2 and 4, the battery module cover plate further includes a locking member 5, where the locking member 5 rotatably penetrates through the side wall of the through groove 11, and two ends of the connecting rod 21 are provided with connecting threaded holes, and one end of the locking member 5 penetrates through the side wall of the through groove 11 and is in threaded connection with the connecting threaded holes. The connecting rod 21 and the lower cover plate 1 are connected by using the locking member 5, thereby facilitating the disassembly and assembly of the connecting rod 21. The locking element 5 is illustratively a bolt.
Optionally, as shown in fig. 2, the through groove 11 is further provided with a baffle 12 extending towards the explosion-proof valve, and the baffle 12 encloses a ventilation channel enclosing the explosion-proof valve. By arranging the baffle 12, the valve opening gas is ensured to flow only through the ventilation channel, and damage to other parts caused by the fact that the valve opening gas flows to other areas is avoided.
The working principle of the battery module cover plate is that when the air pressure in the battery is gradually increased, the explosion-proof valve can be broken to release pressure in the battery in order to ensure that the battery does not explode, and when the air pressure is increased to a certain degree. At this moment, the valve opening gas is wrapped up in and is punched out together with the high-temperature metal fragments when the explosion-proof valve breaks, impact on the flow dividing piece 2, at this moment, can produce thrust to the fan blade 22 of the flow dividing piece 2, promote the fan blade 22 to rotate, the valve opening gas is discharged in sections along with the rotation of the fan blade 22, thereby reducing the impact force and the speed of the valve opening gas, then the valve opening gas can flow to the cooled part of the battery module along the gas guiding channel 4, the cooling system cools down the valve opening gas, thereby reducing the collection of the valve opening gas at the top of the battery module, and also reducing the temperature of the valve opening gas. When the valve opening gas impacts the flow dividing piece 2, high-temperature metal fragments can be blocked by the fan blades 22 of the flow dividing piece 2 and remain below the lower cover plate 1, so that the valve opening gas and the high-temperature metal fragments are divided, and the risk that the high-temperature metal fragments ignite the valve opening gas is reduced.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The battery module apron, its characterized in that, battery module apron includes:
the battery module comprises a lower cover plate (1), wherein the lower cover plate (1) is fixedly arranged at the top of a battery module, a through groove (11) is formed in the lower cover plate (1), the battery module consists of a plurality of electric cores, explosion-proof valves are arranged on the electric cores, and the explosion-proof valves of the electric cores are arranged below the through groove (11);
the flow dividing piece (2) is rotatably arranged in the through groove (11), and the flow dividing piece (2) is used for separating metal scraps in valve opening gas which breaks through the explosion-proof valve;
the upper cover plate (3), upper cover plate (3) cladding in lower apron (1) with the outside of battery module, upper cover plate (3) with be formed with between lower apron (1) be used for open valve gas circulation's gas direction passageway (4).
2. The battery module cover plate according to claim 1, wherein the flow dividing member (2) includes a connecting rod (21) and a fan blade (22) connected to the connecting rod (21), and the connecting rod (21) is rotatably provided in the through groove (11).
3. The battery module cover plate according to claim 2, wherein a plurality of the fan blades (22) are provided, and the plurality of the fan blades (22) are arranged at equal intervals along the circumferential direction of the connection rod (21).
4. The battery module cover according to claim 2, wherein the fan blades (22) are wave plates.
5. The battery module cover according to claim 2, wherein the fan blades (22) are straight flat plates.
6. The battery module cover plate according to claim 2, wherein insertion protrusions are provided at both ends of the connection rod (21), connection through holes are provided on the side walls of the through grooves (11) adjacent to the insertion protrusions, and the insertion protrusions are rotatably inserted into the connection through holes.
7. The battery module cover plate according to claim 6, wherein the lower cover plate (1) is further provided with a bearing, the bearing is embedded in the connecting through hole, and the insertion protrusion is inserted in an inner hole of the bearing.
8. The battery module cover plate according to claim 2, further comprising a locking member (5), wherein the locking member (5) rotatably penetrates through the side wall of the through groove (11), connecting threaded holes are formed in two ends of the connecting rod (21), and one end of the locking member (5) penetrates through the side wall of the through groove (11) to be in threaded connection with the connecting threaded holes.
9. The battery module cover plate according to claim 1, wherein the through groove (11) is further provided with a baffle plate (12) extending towards the explosion-proof valve, and the baffle plate (12) encloses a ventilation channel enclosing the explosion-proof valve.
10. A battery module, characterized in that the battery module comprises the battery module cover plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320825730.XU CN219419394U (en) | 2023-04-11 | 2023-04-11 | Battery module cover plate and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320825730.XU CN219419394U (en) | 2023-04-11 | 2023-04-11 | Battery module cover plate and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219419394U true CN219419394U (en) | 2023-07-25 |
Family
ID=87242144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320825730.XU Active CN219419394U (en) | 2023-04-11 | 2023-04-11 | Battery module cover plate and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219419394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117954774A (en) * | 2024-03-26 | 2024-04-30 | 晶科储能科技有限公司 | Battery module |
-
2023
- 2023-04-11 CN CN202320825730.XU patent/CN219419394U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117954774A (en) * | 2024-03-26 | 2024-04-30 | 晶科储能科技有限公司 | Battery module |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |