Exhaust plate structure, battery box and electric equipment

Abstract

The utility model provides an exhaust plate structure, battery box and electric equipment, relates to battery technical field, the exhaust plate structure is applied to the battery box, the battery box comprises a box body and a battery module arranged in the box body, the battery module comprises a plurality of battery cells, the exhaust plate structure comprises an exhaust plate piece, the exhaust plate piece is arranged in the box body, and the exhaust plate piece is arranged in the box body. The exhaust plate is used for being arranged in the box body and is used for being arranged opposite to the battery module; one side wall, far away from the battery module, of the exhaust plate is provided with a plurality of exhaust channels which are mutually independent and separated, the exhaust plate is provided with a plurality of communicating holes, and one ends of the communicating holes are used for correspondingly communicating with anti-explosion valves of the battery cells respectively; the other end of each communicating hole is correspondingly communicated with each exhaust channel, and the exhaust channels are used for being communicated with an exhaust valve of the box body. According to the utility model, the loss of electric equipment such as an electric vehicle can be reduced, and fire is avoided, so that the personal safety of passengers and the safety of the whole battery box and the electric equipment are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an exhaust plate structure, a battery box and electrical equipment. Background Art

[0002] The battery box can be used as a core component of electrical equipment such as electric vehicles. It is mainly used to provide a power source for electric vehicles so that electric vehicles can have a longer endurance and ensure the safety and durability of the vehicle.

[0003] In related technologies, a battery box mainly includes a box body, a bracket and a battery module. The battery module includes multiple battery cells, and the battery module is fixed in the box body through the bracket. An exhaust cavity is formed between the battery module and the inner wall of the box body. An explosion-proof valve is provided at the end of each battery cell, and the explosion-proof valve is connected to the exhaust cavity. An exhaust valve connected to the exhaust cavity is provided on the side wall of the box body.

[0004] However, when a single battery cell in a battery module ejects harmful heat gases due to thermal runaway, the harmful heat gases will directly spread to other adjacent battery cells through the exhaust cavity, causing the fire point to increase and the loss to expand, thereby affecting the personal safety of passengers as well as the safety of the entire battery box and electrical equipment. Utility Model Content

[0005] The problem solved by the present invention is that when a single battery cell in a battery module in the related art fails, it will affect other adjacent battery cells, resulting in an increase in the fire point and losses, affecting the safety of passengers, battery boxes and electrical equipment.

[0006] To solve the above problems, in the first aspect, the utility model provides an exhaust plate structure, which is applied to a battery box, wherein the battery box includes a box body and a battery module arranged in the box body, the battery module includes a plurality of battery cells, and the exhaust plate structure includes an exhaust plate, which is used to be arranged in the box body and is used to be arranged opposite to the battery module; a side wall of the exhaust plate away from the battery module has a plurality of exhaust channels separated from each other independently, and a plurality of connecting holes are provided on the exhaust plate, and one end of the plurality of connecting holes is used to correspond to the explosion-proof valves connected to the battery cells; the other end of each connecting hole is connected to each exhaust channel, and the exhaust channel is used to connect to the exhaust valve of the box body.

[0007] Optionally, the exhaust plate includes an exhaust plate body and multiple spacer plates, and the exhaust plate body is provided with multiple connecting holes arranged along the first direction; multiple spacer plates are spaced apart on a side wall of the exhaust plate body away from the battery module, and the exhaust channel is formed between two adjacent spacer plates.

[0008] Optionally, the spacer plate includes a first plate portion and a second plate portion that are arranged at an angle, and among the plurality of spacer plates, the spacing arrangement direction of the plurality of first plate portions is arranged at an angle to the spacing arrangement direction of the plurality of second plate portions.

[0009] Optionally, the plurality of communication holes on the exhaust plate body are used to fit with and communicate with the explosion-proof valves of the plurality of battery cells.

[0010] Optionally, the exhaust plate structure includes two exhaust plates, the two exhaust plates are respectively arranged opposite to the battery modules, the communication holes on the two exhaust plates are arranged along the first direction, the exhaust plates are L-shaped, and the two exhaust plates form a rectangular plate;

[0011] In the exhaust plate, an air inlet end of the exhaust channel is formed between two adjacent ends of the first plate portion away from the second plate portion, and the communicating hole is located in the air inlet end, and an air outlet end of the exhaust channel is formed between two adjacent ends of the second plate portion away from the first plate portion;

[0012] The air outlet ends of the two exhaust plates face in opposite directions.

[0013] The beneficial effects of the exhaust plate structure of the present invention are as follows: the exhaust plate structure and the battery module formed by assembling a plurality of battery cells are installed in a box body, so as to provide safety protection for the battery module through the box body. Each battery cell may have an explosion-proof valve, and the exhaust plate structure may include an exhaust plate, which may be arranged relative to the battery module. Specifically, one end of the plurality of connection holes on the exhaust plate is respectively connected to the plurality of explosion-proof valves of the battery module, and a plurality of exhaust channels separated from each other are provided on a side wall of the exhaust plate away from the battery module, and the other ends of the plurality of connecting holes are respectively corresponding to and connected to the plurality of exhaust channels. When one of the battery cells in the battery module generates heat-damaging gas due to thermal runaway or other reasons, the heat-damaging gas generated by the battery cell can flow into the corresponding exhaust channel through the connecting hole through its corresponding explosion-proof valve, and from the exhaust channel connected to each exhaust channel The exhaust valve of the box discharges the gas to the outside of the box. Since the exhaust channels corresponding to each battery cell are independently separated from each other, the heat-damaging gas in the exhaust channel corresponding to each battery cell 31 will not affect other adjacent battery cells, and the exhaust channel used to provide a flow path for the heat-damaging gas is located on the side of the exhaust plate away from the battery module, which can also effectively prevent the heat-damaging gas in each exhaust channel from affecting the entire battery module, thereby not increasing the fire point, avoiding chain reactions that lead to increased losses of electrical equipment such as electric vehicles, minimizing losses of electric vehicles and avoiding fires, thereby ensuring the personal safety of passengers and the safety of the entire battery box and electrical equipment.

[0014] In the second aspect, the utility model also provides a battery box, including a box body, a battery module and the exhaust plate structure as described above, the box body includes a cover plate, a bracket and a shell, the shell has an installation cavity, the battery module is fixedly installed in the installation cavity through the bracket, and the cover plate is connected to the opening edge of the shell.

[0015] Therefore, since the battery box includes the exhaust plate structure, the battery box at least has all the technical effects of the exhaust plate structure, which will not be repeated here.

[0016] Optionally, the electrical equipment includes a frame and a seat, and the cover plate, the bottom plate of the seat and the slide rail of the seat are formed into an integrated structure using extruded profiles, and the integrated structure is used to connect the frame of the electrical equipment.

[0017] Optionally, the battery box further includes a liquid cooling plate, which is disposed between the cover plate and the battery module, and the liquid cooling plate is in contact with the battery module.

[0018] Optionally, the liquid cooling plate includes a liquid cooling plate body, a liquid inlet plate and a liquid outlet plate, the interior of the liquid cooling plate body has a plurality of liquid cooling channels, the liquid inlet plate and the liquid outlet plate are arranged at opposite ends of the liquid cooling plate body, the liquid cooling channel has a liquid inlet port and a liquid outlet port, the liquid inlet port and the liquid outlet port are respectively connected to the liquid inlet plate and the liquid outlet plate, and the liquid inlet plate and the liquid outlet plate are used to connect to an external liquid cooling device.

[0019] Optionally, the exhaust plate structure and the battery module are arranged along a third direction, the battery module is fitted with the exhaust plate structure, and the multiple explosion-proof valves of the battery module are respectively connected to the exhaust channels of the exhaust plate structure, the exhaust channels are located on a side wall of the exhaust plate structure away from the cover plate, and an exhaust cavity is formed between the exhaust plate structure and the inner bottom wall of the shell, and the multiple exhaust channels of the exhaust plate structure are connected to the exhaust cavity; the exhaust cavity is connected to the exhaust valve on the shell.

[0020] Optionally, the box body also includes a sealing structure and a first fastener, the sealing structure is arranged between the cover plate and the shell, and is respectively fitted with the edges of the opening ends of the cover plate and the shell, and the first fastener is passed through the opening edge of the shell and the sealing structure and connected to the cover plate.

[0021] Optionally, the box body also includes multiple second fasteners, and the outer edges of the cover plate and the shell are respectively provided with multiple first slot structures and multiple second slot structures at intervals, and the two ends of the second fasteners are connected to the corresponding first slot structures and second slot structures.

[0022] In a third aspect, the present invention further provides an electrical device comprising the battery box as described above.

[0023] Therefore, the electrical equipment includes a battery box, so the electrical equipment at least has all the technical effects of the battery box, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural schematic diagrams of the exhaust plate structure and the battery module in the embodiment of the present utility model.

[0025] Figure 2 This is a schematic structural diagram of the exhaust plate in an embodiment of the present utility model.

[0026] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 4 This is the second structural diagram of the exhaust plate structure and the battery module in the embodiment of the present utility model.

[0028] Figure 5 This is one of the structural diagrams of the battery box in the embodiment of the present utility model.

[0029] Figure 6 This is a schematic diagram of the explosion structure of the battery box in the embodiment of the present utility model.

[0030] Figure 7 Schematic diagram of the cross-sectional structure of the battery box in the embodiment of the present utility model.

[0031] Figure 8 This is a schematic diagram of the explosion structure of the liquid cooling plate in an embodiment of the present utility model.

[0032] Figure 9 It is a structural schematic diagram of the liquid outlet plate in an embodiment of the present utility model.

[0033] Figure 10 It is a structural schematic diagram of the battery module in an embodiment of the present utility model.

[0034] Figure 11 This is the second structural diagram of the battery box in the embodiment of the present utility model.

[0035] Figure 12 for Figure 11 Schematic diagram of the enlarged structure at point B in the middle.

[0036] Figure 13 It is a schematic diagram of the partial structure of the box body in the embodiment of the present utility model.

[0037] Description of reference numerals:

[0038] 1-Exhaust plate; 11-Exhaust plate body; 111-Connecting hole; 12-Partition plate; 121-Exhaust channel; 1212-Outlet end; 122-First plate portion; 123-Second plate portion; 2-Box body; 21-Cover plate; 211-Base; 212-First slot structure; 22-Bracket; 23-Shell; 231-Second slot structure; 24-Exhaust chamber; 25-Exhaust valve; 26-Sealing structure; 27-First fastener; 28-Second fastener; 3-Battery module; 31-Battery cell; 311-Explosion-proof valve; 4-Liquid cooling plate; 41-Liquid cooling plate body; 42-Liquid inlet plate; 43-Liquid outlet plate; 431-Second liquid inlet hole; 432-Reflux hole; 5-Thermal insulation pad. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0040] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the top and the reverse direction of the Z-axis representing the bottom. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis representing the right side and the reverse direction of the X-axis representing the left side. The Y-axis in the accompanying drawings represents the front-to-back position, with the positive direction of the Y-axis representing the front side and the reverse direction of the Y-axis representing the rear side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0041] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in this utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0042] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0043] In response to the problems existing in the above-mentioned related technologies, this embodiment provides an exhaust plate structure.

[0044] like Figure 1 As shown, an exhaust plate structure provided by an embodiment of the present invention is applied to a battery box, wherein the battery box includes a box body 2 and a battery module 3 arranged in the box body 2, the battery module 3 includes a plurality of battery cells 31, and the exhaust plate structure includes an exhaust plate 1, the exhaust plate 1 is used to be arranged in the box body 2, and is used to be arranged opposite to the battery module 3; the exhaust plate 1 has a side wall away from the battery module 3 and has a plurality of exhaust channels 121 independently separated from each other, and the exhaust plate 1 is provided with a plurality of connecting holes 111, one end of the plurality of connecting holes 111 is respectively used to correspond to the explosion-proof valve 311 connected to the battery cell 31; the other end of each connecting hole 111 is correspondingly connected to each exhaust channel 121, and the exhaust channel 121 is used to connect to the exhaust valve 25 of the box body 2.

[0045] Specifically, the exhaust plate structure and the battery module 3 are both installed in the box body 2 . The multiple battery cells 31 of the battery module 3 are arranged in an array, and each battery cell 31 has an explosion-proof valve 311 .

[0046] Among them, the exhaust plate 1 is arranged relative to the battery module 3, so that the multiple connecting holes 111 on the exhaust plate 1 are respectively connected to the multiple explosion-proof valves 311 in the battery module 3, and if the explosion-proof valve 311 is at the upper end surface of the battery cell 31, the battery cell 31 is installed in a forward direction, and the exhaust plate 1 can be installed relative to the upper part of the battery module 3, so that the heat-damaging gas generated by thermal runaway of the battery cell 31 flows upward from the upper explosion-proof valve 311 and enters the corresponding exhaust channel 121 through the connecting hole 111; or, if the explosion-proof valve 311 is at the lower end surface of the battery cell 31, the battery cell 31 is installed in an inverted manner, and the exhaust plate 1 can be installed relative to the lower part of the battery module 3, so that the heat-damaging gas generated by thermal runaway of the battery cell 31 flows downward from the lower explosion-proof valve 311 and enters the corresponding exhaust channel 121 through the connecting hole 111.

[0047] An exhaust valve 25 may be provided on the side wall of the box body 2 so that the heat-damaging gas generated by the battery cells 31 in the battery module 3 can eventually be discharged to the outside of the box body 2 through the exhaust valve 25 of the box body 2 .

[0048] In this embodiment, the exhaust plate structure and the battery module 3 formed by assembling a plurality of battery cells 31 are installed in the box body 2 to provide safety protection for the battery module 3 through the box body 2. Each battery cell 31 may have an explosion-proof valve 311, and the exhaust plate structure may include an exhaust plate 1. The exhaust plate 1 may be arranged opposite to the battery module 3. Specifically, the plurality of connection holes on the exhaust plate 1 are respectively connected to the plurality of explosion-proof valves 311 of the battery module 3, and a plurality of exhaust channels 121 separated from each other are provided on a side wall of the exhaust plate 1 away from the battery module 3, and the plurality of connecting holes 111 correspond to and are connected to the plurality of exhaust channels 121. When one of the battery cells 31 in the battery module 3 generates heat-damaging gas due to thermal runaway or other reasons, the heat-damaging gas generated by the battery cell 31 can flow into the corresponding exhaust channel 121 through the corresponding explosion-proof valve 311 and the connecting hole 111, and is discharged from the exhaust plate 121 connected to the exhaust channel 121. The exhaust valve 25 of the box body 2 connected to the channel 121 discharges to the outside of the box body 2. Since the exhaust channels 121 corresponding to each battery cell 31 are independently separated from each other, the heat-damaging gas in the exhaust channel 121 corresponding to each battery cell 31 can be prevented from affecting other adjacent battery cells 31, and the exhaust channel 121 used to provide a flow path for the heat-damaging gas is located on the side of the exhaust plate 1 away from the battery module 3, which can also effectively prevent the heat-damaging gas in each exhaust channel 121 from affecting the entire battery module, thereby not increasing the fire point, avoiding chain reactions that lead to increased losses of electrical equipment such as electric vehicles, minimizing losses of electric vehicles and avoiding fires as much as possible, thereby ensuring the personal safety of passengers and the safety of the entire battery box and electrical equipment.

[0049] Optionally, combined Figure 2 and Figure 3 As shown, the exhaust plate 1 includes an exhaust plate body 11 and a plurality of partition plates 12, and the exhaust plate body 11 is provided with a plurality of connecting holes 111 arranged along a first direction; a plurality of the partition plates 12 are spaced apart on a side wall of the exhaust plate body 11 away from the battery module 3, and the exhaust channel 121 is formed between two adjacent partition plates 12.

[0050] Specifically, the exhaust plate body 11 may be a straight plate structure, and the plurality of spacer plates 12 may be spaced apart and located on a side wall of the exhaust plate body 11 away from the battery module 3 .

[0051] The first direction can be Figure 3 The direction of the X axis in the coordinate system is parallel, and the arrangement direction of the multiple communication holes 111 on the exhaust plate body 11 and the arrangement direction of the multiple battery cells 31 in the battery module 3 can be parallel to the first direction.

[0052] Because the exhaust passages 121 are formed between two adjacent partition plates 12, the number of partition plates 12 exceeds the number of exhaust passages 121 by one. For example, if there are five partition plates 12, there are four exhaust passages 121. The communication hole 111 can be located within the exhaust passage 121 to achieve communication between the communication hole 111 and the exhaust passage 121.

[0053] The partition plate 12 and the exhaust plate body 11 are integrated into one structure to improve the mechanical strength of the entire exhaust plate 1 and extend its service life accordingly.

[0054] In this optional embodiment, since a plurality of the partition plates 12 are spaced apart on a side wall of the exhaust plate body 11 away from the battery module 3, the exhaust channel 121 is enclosed between two adjacent partition plates 12. In other words, when the battery cell 31 generates heat-damaging gas due to thermal runaway, the heat-damaging gas can enter the corresponding exhaust channel 121 through the connecting hole 111 from the explosion-proof valve 311 of the battery cell 31. At this time, the exhaust channel 121 and the battery module 3 are on different sides of the exhaust plate body 11, which effectively prevents the heat-damaging gas generated by the battery cell 31 from affecting other adjacent battery cells 31, thereby effectively preventing the fire point and the expansion of losses. Moreover, since the explosion-proof valve 311 of the battery cell 31 is connected to the connecting hole 111 in the exhaust channel 121, in other words, the two are connected in a tightly fitting manner, so as to effectively reduce the possibility of leakage of heat-damaging gas between the explosion-proof valve 311 and the connecting hole 111 after thermal runaway of the battery cell 31, so that the heat-damaging gas can quickly enter the exhaust channel 121 of the exhaust plate body 11 away from the battery module 3, further avoiding the expansion of the fire point and the loss.

[0055] Optionally, combined Figure 3 As shown, the spacer plate 12 includes a first plate portion 122 and a second plate portion 123 arranged at an angle. Among the plurality of spacers 12, the spacing arrangement direction of the plurality of first plate portions 122 is arranged at an angle to the spacing arrangement direction of the plurality of second plate portions 123.

[0056] Specifically, the first plate portion 122 and the second plate portion 123 may be an integral structure to ensure that the partition plate 12 has a certain mechanical strength; and the angle between the two may be a right angle or other angles.

[0057] If the angle between the first plate portion 122 and the second plate portion 123 is a right angle, the first plate portion 122 can be extended along the second direction, and the second plate portion 123 can be extended along the first direction. Figure 3 The Y axis is parallel to the coordinate system.

[0058] If the angle between the first plate portion 122 and the second plate portion 123 is a right angle, the first plate portions 122 of the plurality of spacer plates 12 can be spaced apart along the first direction, and the second plate portions 123 can be spaced apart along the second direction. Each communication hole 111 can be located between two adjacent first plate portions 122.

[0059] In this optional embodiment, since each partition plate 12 includes a first plate portion 122 and a second plate portion 123 arranged at an angle, the spacing arrangement direction of the multiple first plate portions 122 is arranged at an angle to the spacing arrangement direction of the multiple second plate portions 123, and the channel enclosed between two adjacent first plate portions 122 and the channel enclosed between two adjacent second plate portions 123 are connected to form the entire exhaust channel 121. In other words, the exhaust channel 121 between two adjacent partition plates 12 is basically L-shaped rather than straight, thereby effectively increasing the length of the exhaust channel 121, so that the heat-harming gas can quickly dissipate heat and cool down during the flow in the longer exhaust channel 121, thereby correspondingly reducing the harm of the heat-harming gas in the exhaust valve 25 of the box body 2.

[0060] Optionally, combined Figure 3 and Figure 10 As shown, the plurality of communication holes 111 on the exhaust plate body 11 are used to fit with and communicate with the explosion-proof valves 311 of the plurality of battery cells 31 .

[0061] Specifically, the explosion-proof valve 311 of the battery cell 31 can be connected to the corresponding connecting hole 111 on the exhaust plate body 11 in the following manner. For example, the battery module 3 is fitted with the exhaust plate body 11 so that the explosion-proof valve 311 of each battery cell 31 corresponds to and is connected with the connecting hole 111 on the exhaust plate body 11, so as to achieve one-to-one corresponding connection between the multiple connecting holes 111 on the exhaust plate body 11 and the multiple explosion-proof valves 311 of the multiple battery cells 31 in the battery module 3.

[0062] In this optional embodiment, since the multiple connecting holes 111 on the exhaust plate body 11 are in contact with and connected to the explosion-proof valves 311 of the multiple battery cells 31, no other connecting pipe structure is added between the connecting holes 111 and the explosion-proof valves 311, thereby improving the convenience of connection between the connecting holes 111 of the exhaust plate 1 and the explosion-proof valves 311 of the battery cells 31.

[0063] Optionally, combined Figure 4 As shown, the exhaust plate structure includes two exhaust plates 1, the two exhaust plates 1 are used to be respectively arranged opposite to the battery modules 3, the communicating holes 111 on the two exhaust plates 1 are arranged along the first direction, the exhaust plates 1 are L-shaped, and the two exhaust plates 1 form a rectangular plate;

[0064] In the exhaust plate 1, the air inlet end of the exhaust channel 121 is formed between two adjacent ends of the first plate portion 122 away from the second plate portion 123, and the communication hole 111 is located in the air inlet end. The air outlet end 1212 of the exhaust channel 121 is formed between two adjacent ends of the second plate portion 123 away from the first plate portion 122.

[0065] The gas outlet ends 1212 of the two gas exhaust plates 1 face in opposite directions.

[0066] Specifically, the exhaust plate structure may include two exhaust plates 1, and the cross-section of each exhaust plate 1 along the horizontal direction may be basically L-shaped. When the two exhaust plates 1 are assembled, an exhaust plate structure of a rectangular plate may be formed, and the multiple connecting holes 111 of the rectangular plate may be arranged along the first direction so that the explosion-proof valves 311 of the multiple battery cells 31 arranged along the first direction in the entire battery module 3 are correspondingly connected to the multiple connecting holes 111 on the two exhaust plates 1.

[0067] The exhaust plate 1 has multiple exhaust channels 121, each exhaust channel 121 has an air inlet end and an air outlet end 1212. For example, the air inlet end of the exhaust channel 121 can be formed between the ends of two adjacent first plate portions 122 away from the second plate portion 123, and the connecting hole 111 is located inside the air inlet end to achieve rapid connection between the connecting hole 111 and the air inlet end; the air outlet end 1212 of the exhaust channel 121 is formed between the ends of two adjacent second plate portions 123 away from the first plate portion 122.

[0068] Among them, the direction of the air inlet end can be Figure 4 The Y-axis direction in the coordinate system is parallel; the directions of the gas outlet ends 1212 of two adjacent exhaust plates 1 are opposite, for example, the direction of the gas outlet end 1212 of one exhaust plate 1 is opposite to that of the other. Figure 4 The X-axis in the coordinate system is in the same direction, and the direction of the outlet end 1212 of the adjacent exhaust plate 1 is the same as Figure 4 The positive direction of the X axis in the coordinate system is consistent.

[0069] In this optional embodiment, since the two exhaust plates 1 are respectively arranged opposite to the battery module 3, when some battery cells 31 in the battery module 3 generate heat-damaging gases due to thermal runaway, the heat-damaging gases of different battery cells 31 are ejected from the explosion-proof valves 311 of the corresponding battery cells 31 and enter the corresponding exhaust channels 121 through the corresponding connecting holes 111. Since the outlet ends 1212 of the two exhaust plates 1 are opposite, the heat-damaging gases generated by different battery cells 31 can flow to the explosion-proof valves 311 of the box body 2 along the outlet ends 1212 of their respective different exhaust channels 121. In other words, the heat-damaging gases generated by different battery cells 31 due to thermal runaway are effectively diverted to different directions, further preventing the concentration of heat-damaging gases generated by multiple battery cells 31 at the same time, thereby reducing the risk of explosion accordingly. In addition, each exhaust plate 1 is L-shaped, and the two exhaust plates 1 form a rectangular plate, which can effectively reduce the space occupied by the two exhaust plates 1 after assembly, and correspondingly reduce the peripheral area of ​​the exhaust plate structure to reduce the volume of the entire battery box.

[0070] Combine Figures 5 to 7 As shown, an embodiment of the present invention also provides a battery box, including a box body 2, a battery module 3 and the exhaust plate structure as described in the above embodiment, the box body 2 includes a cover plate 21, a bracket 22 and a shell 23, the shell 23 has an installation cavity, the battery module 3 is fixedly installed in the installation cavity through the bracket 22, and the cover plate 21 is connected to the opening edge of the shell 23.

[0071] Specifically, the battery module 3 and the exhaust plate structure can be arranged and installed in the box body 2 along the third direction, for example, Figure 3 As shown, the exhaust plate structure can be located below the battery module 3. At least one battery module 3 can be installed in the box body 2.

[0072] The bracket 22 can be fixedly installed in the housing 23 , and the battery module 3 can be fixed on the bracket 22 by bonding.

[0073] The housing 23 may be a housing structure having a mounting cavity and an opening at one end. The cover plate 21 may be disposed above the housing 23 , and the cover plate 21 is sealed and connected to an edge of the opening of the housing 23 .

[0074] The shell 23 can be made of composite materials with high strength and good corrosion resistance, and can effectively support the entire battery module 3 in combination with glue injection. Compared with the aluminum alloy frame support in the existing technology, it reduces weight without losing strength, thereby achieving better endurance for electrical equipment such as electric vehicles.

[0075] The battery cell 31 may be a blade battery or other types of batteries, which are not specifically limited here.

[0076] In this optional embodiment, since the battery module 3 is fixedly installed in the installation cavity of the shell 23 by the bracket 22, the battery module 3 is protected by the shell 23; and the cover plate 21 is connected to the opening edge of the shell 23, so that the battery module 3 is encapsulated inside the shell 23 through the cover plate 21.

[0077] Optionally, the cover plate 21, the bottom plate of the seat of the electrical equipment and the slide rail of the seat are formed into an integrated structure using extruded profiles, and the integrated structure is used to connect to the frame of the electrical equipment.

[0078] Specifically, the electrical equipment includes a vehicle frame and a seat, and the cover plate 21, the bottom plate of the seat and the slide rail of the seat can be formed into an integrated structure by an extrusion process, and the integrated structure can be fixedly connected to the vehicle frame.

[0079] In this optional embodiment, the entire battery module 3 can be installed upside down on the vehicle, wherein the extruded profile of the integrated structure serves as the cover 21 of the battery module 3 and also serves as the body base 211 of electrical equipment such as an electric vehicle. It can also serve as a carrier for the seat slide rails and a functional module that supports the forward and backward movement of the seat, making the entire cab a closed space. The battery module 3 is independent on the outside of the cab. When there is a risk of spontaneous combustion caused by the battery cell 31, the risk of heat-damaging gases generated by thermal runaway is avoided from rising and invading the cab. When the situation is serious, due to the structural characteristics of the integrated structure, the driver in the cab will also have sufficient time to escape from the vehicle.

[0080] Optionally, combined Figure 5 As shown, the integrated structure includes a plurality of bases 211 , which are arranged along the width direction of the frame, and two adjacent bases 211 are fixed by welding.

[0081] Specifically, the width direction of the frame refers to the left and right direction of the electric vehicle. The integrated structure includes multiple bases 211, for example, two bases 211, and at least one base 211 corresponds to a seat position of the electric vehicle.

[0082] In this optional embodiment, two adjacent bases 211 may be connected and fixed by welding to improve the mechanical strength of the integrated structure.

[0083] Optionally, combined Figure 6 and Figure 7 As shown, the battery box further includes a liquid cooling plate 4 , which is disposed between the cover plate 21 and the battery module 3 , and the liquid cooling plate 4 is in contact with the battery module 3 .

[0084] Specifically, the liquid cooling plate 4 may be disposed below the cover plate 21 and above the battery module 3 , and the liquid cooling plate 4 may be disposed in close contact with the battery module 3 .

[0085] The liquid cooling plate 4 may be fixed in the following manners. For example, the liquid cooling plate 4 may be fixedly connected to the cover plate 21 by fasteners such as rivets, so that the liquid cooling plate 4 is fixedly installed in the box body 2 .

[0086] In this optional embodiment, since the liquid cooling plate 4 is in contact with the battery module 3, the heat generated during the operation of the battery module 3 is absorbed by the liquid cooling plate 4 through heat transfer, so as to cool the battery module 3, and accordingly maintain the temperature of the battery module 3 within a suitable temperature range, thereby ensuring the cruising range and the service life of the battery module 3.

[0087] Optionally, combined Figure 8 As shown, the liquid cooling plate 4 includes a liquid cooling plate body 41, a liquid inlet plate 42 and a liquid outlet plate 43. The interior of the liquid cooling plate body 41 has a plurality of liquid cooling channels arranged at intervals. The liquid inlet plate 42 and the liquid outlet plate 43 are arranged at opposite ends of the liquid cooling plate body 41. The liquid cooling channel has a liquid inlet port and a liquid outlet port. The liquid inlet port and the liquid outlet port are respectively connected to the liquid inlet plate 42 and the liquid outlet plate 43. The liquid inlet plate 42 and the liquid outlet plate 43 are used to connect to an external liquid cooling device.

[0088] Specifically, the liquid cooling plate 4 may include at least one liquid cooling plate body 41, and each liquid cooling plate body 41 may be provided with multiple liquid cooling channels inside. The opposite ends of each liquid cooling channel are respectively a liquid inlet port and a liquid outlet port, so as to respectively connect the liquid inlet plate 42 and the liquid outlet plate 43.

[0089] The liquid cooling plate body 41 , the liquid inlet plate 42 and the liquid outlet plate 43 can be formed into an integral structure by processing aluminum profiles using an extrusion process, thereby ensuring that the liquid cooling plate 4 has sufficient mechanical strength.

[0090] The liquid inlet plate 42 and the liquid outlet plate 43 can be connected to the liquid cooling plate body 41 and the external liquid cooling device in the following manner. For example, the liquid inlet plate 42 is provided with a first liquid inlet hole and a liquid outlet hole. Figure 9 As shown, a second liquid inlet hole 431 and a return hole 432 are provided on the liquid outlet plate 43, and the two ends of each liquid cooling channel are respectively connected to the liquid outlet hole of the corresponding liquid inlet plate 42 and the second liquid inlet hole 431 of the liquid outlet plate 43, and the first liquid inlet hole and the return hole 432 are used to connect to an external liquid cooling device.

[0091] The liquid cooling device can be installed on the frame of the electric vehicle. The liquid cooling device can adopt the following structure. For example, the liquid cooling device mainly includes a radiator and a liquid circulation pump. The liquid inlet of the liquid circulation pump is connected to the radiator, and the liquid outlet of the liquid circulation pump is connected to the first liquid inlet via a pipeline. The return hole 432 of the liquid outlet plate 43 can be connected to the radiator. The radiator is used to hold coolant. The radiator is a key component of the liquid cooling device. It dissipates heat in the coolant to the external environment by increasing the contact area with the air. The radiator can be a heat exchanger.

[0092] In this optional embodiment, since the liquid cooling plate 4 may include at least one liquid cooling plate body 41, it is ensured that the liquid cooling plate 4 has sufficient mechanical strength; the electromagnetic module can be cooled and cooled in the following manner, for example, the liquid cooling device provides low-temperature cooling liquid, which enters the liquid cooling channel of the liquid cooling plate body 41 through the first liquid inlet hole and liquid outlet hole and the liquid inlet port of the liquid inlet plate 42. Since the liquid cooling plate body 41 is in contact with the battery module 3, the heat generated during the operation of the battery module 3 is absorbed by the liquid cooling plate body 41 to achieve the cooling operation of the battery module 3. Subsequently, the cooling liquid that absorbs the heat of the battery module 3 flows from the liquid outlet port of the liquid cooling channel through the second liquid inlet hole 431 and the return hole 432 of the liquid outlet plate 43 back to the external liquid cooling device for cooling again. Finally, the liquid cooling device outputs low-temperature cooling liquid again. This process is continuously circulated to achieve the cooling and cooling operation of the battery module 3.

[0093] Optionally, combined Figure 7 and Figure 10 As shown, the exhaust plate structure and the battery module 3 are arranged along the third direction, the battery module 3 is fitted with the exhaust plate structure, and the multiple explosion-proof valves 311 of the battery module 3 are respectively connected to the exhaust channels 121 of the exhaust plate structure, and the exhaust channels 121 are located on a side wall of the exhaust plate structure away from the cover plate 21. An exhaust cavity 24 is formed between the exhaust plate structure and the inner bottom wall of the shell 23, and the multiple exhaust channels 121 of the exhaust plate structure are connected to the exhaust cavity 24; the exhaust cavity 24 is connected to the exhaust valve 25 on the shell 23.

[0094] Specifically, combined Figure 10 As shown, the battery module 3 includes a plurality of battery cells 31 arranged along a first direction. An explosion-proof valve 311 is provided at the bottom of each battery cell 31. When a single battery cell 31 generates heat-damaging gas due to thermal runaway, the heat-damaging gas can be discharged from the explosion-proof valve 311.

[0095] The third direction can be Figure 7The Z-axis direction in the coordinate system is parallel and can refer to the up and down direction, so the exhaust plate structure and the battery module 3 are arranged along the third direction, wherein the battery module 3 can be installed upside down in the shell 23 of the box body 2, which means that the explosion-proof valves 311 of the multiple battery cells 31 in the battery module 3 are facing downward, and the exhaust plate structure is below the battery module 3, and the multiple connecting holes 111 of the exhaust plate structure are respectively connected to the multiple explosion-proof valves 311 of the battery module 3, and the exhaust channel 121 is on a side wall of the exhaust plate 1 away from the cover plate 21, such as the lower side wall.

[0096] A preset interval is provided between the exhaust plate structure and the inner bottom wall of the shell 23 , which is the exhaust cavity 24 , and the multiple exhaust channels 121 of the exhaust plate structure are respectively connected to the exhaust cavity 24 , which can be connected to the exhaust valve 25 on the box body 2 .

[0097] In this optional embodiment, the multiple cells 31 of the battery module 3 in the box body 2 are all installed upside down, the explosion-proof valve 311 of the cell 31 is downward, and is connected to the exhaust channel 121 below through the connecting hole 111 of the exhaust plate 1; when the cell 31 generates heat-damaging gas due to thermal runaway, the heat-damaging gas enters the exhaust chamber 24 (through the explosion-proof valve 311 of the cell 31, the connecting hole 111 of the exhaust plate 1 and the exhaust channel 121) Figure 7 The direction of the middle arrow indicates the flow direction of the heat-damaging gas in the exhaust chamber 24), and the gas is exhausted out of the box body 2 from the exhaust valve 25 on the shell 23. In other words, the explosion-proof valve 311 of the battery cell 31 and the exhaust channel 121 of the exhaust plate 1 are both facing downward, which can prevent the heat-damaging gas and flames from rising, and the sturdy and thick cover 21 can effectively isolate the flames from rising into the cockpit, thereby protecting the driver's safety and reducing vehicle losses.

[0098] Optionally, combined Figure 6 and Figure 7 As shown, the battery box further includes a thermal insulation pad 5, which is disposed between the liquid cooling plate 4 and the cover plate 21, and the thermal insulation pad 5 is respectively adhered to the liquid cooling plate 4 and the cover plate 21.

[0099] Specifically, the thermal insulation pad 5 can be made of a material with thermal insulation properties; the thermal insulation pad 5 can be arranged between the liquid cooling plate 4 and the cover plate 21, and be respectively bonded to both.

[0100] In this optional embodiment, since the thermal insulation pad 5 is arranged between the liquid cooling plate 4 and the cover plate 21, the heat transferred upward from the battery module 3 to the cover plate 21 can be further reduced, thereby correspondingly reducing the temperature rise inside the electrical equipment such as electric vehicles.

[0101] Optionally, combined Figure 6 、 Figure 11 and Figure 12As shown, the box body 2 also includes a sealing structure 26 and a first fastener 27. The sealing structure 26 is arranged between the cover plate 21 and the shell 23, and is respectively fitted with the edges of the opening ends of the cover plate 21 and the shell 23. The first fastener 27 is passed through the opening edge of the shell 23 and the sealing structure 26 and connected to the cover plate 21.

[0102] Specifically, the sealing structure 26 can be a sealing ring, sealant, or other types of sealing structures. As long as various sealing structures 26 have a sealing function between the cover plate 21 and the shell 23, they are applicable to this technical solution and are not specifically limited here.

[0103] The first fastener 27 may be a rivet, a bolt fastener, or the like.

[0104] In this optional embodiment, the cover plate 21 and the shell 23 can be sealed and connected in the following manner. For example, the sealing structure 26 is set at the connection between the opening edge of the cover plate 21 and the shell 23, and then the first fastener 27 is passed through the opening edge of the shell 23 and the sealing structure 26, and the cover plate 21 is connected to achieve the sealing and fixed connection between the cover plate 21 and the shell 23.

[0105] Optionally, combined Figure 12 and Figure 13 As shown, the box body 2 also includes a plurality of second fasteners 28, and the outer edges of the cover plate 21 and the shell 23 are respectively provided with a plurality of first slot structures 212 and a plurality of second slot structures 231 at intervals, and the two ends of the second fasteners 28 are connected to the corresponding first slot structures 212 and the second slot structures 231.

[0106] Specifically, a plurality of first slot structures 212 may be spaced apart on the circumferential edge of the cover plate 21 , and a plurality of second slot structures 231 may be spaced apart on the circumferential outer edge of the shell 23 , and the number and position of the first slot structures 212 and the second slot structures 231 match the second fasteners 28 .

[0107] The first slot structure 212 and the second slot structure 231 can be circular hole structures respectively provided within the outer edges of the cover plate 21 and the shell 23, or can be arc-shaped notches respectively provided at the outer edges of the cover plate 21 and the shell 23 (see FIG. Figure 13 ). The second fastener 28 may be a bolt fastener or a mounting sleeve.

[0108] In this optional embodiment, the cover plate 21 and the shell 23 can be fastened in the following manner. For example, the cover plate 21 is covered on the opening edge of the shell 23. After the cover plate 21 and the shell 23 are connected by the first fastener 27, the first slot structure 212 corresponding to the cover plate 21 and the second slot structure 231 corresponding to the shell 23 can be respectively connected by multiple second fasteners 28 to improve the connection stability of the cover plate 21 and the shell 23.

[0109] An embodiment of the present invention provides an electrical device, comprising the battery box as described in the above embodiment.

[0110] Specifically, the electrical equipment may be electric vehicles, aircraft, energy storage cabinets, etc. As long as various electrical equipment with battery boxes are applicable to this technical solution, no specific limitation is made here.

[0111] The beneficial effects of the electrical equipment of this embodiment relative to the prior art are the same as those of the above-mentioned battery box, and will not be described in detail here.

[0112] Optionally, the electrical equipment further includes a frame, and the battery box is installed at the bottom of the frame.

[0113] Specifically, if the electrical equipment is an electric car or an aircraft, the electrical equipment also includes a frame, and the cover plate 21 of the battery box, the bottom plate of the seat and the slide rail of the seat can be integrated into an integral structure, and the integral structure can be fixedly connected to the bottom of the frame to achieve fixed assembly of the battery box and the frame.

[0114] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An exhaust plate structure, applied to a battery box, the battery box comprising a box body (2) and a battery module (3) arranged in the box body (2), the battery module (3) comprising a plurality of battery cells (31), characterized in that: The exhaust plate structure comprises an exhaust plate (1), the exhaust plate (1) being used to be arranged in the box (2) and being used to be arranged opposite to the battery module (3); a side wall of the exhaust plate (1) away from the battery module (3) is provided with a plurality of exhaust channels (121) that are independently separated from each other; the exhaust plate (1) is provided with a plurality of communication holes (111), one end of each of the plurality of communication holes (111) is used to correspond to the explosion-proof valve (311) of the battery cell (31); the other end of each of the communication holes (111) is correspondingly connected to each exhaust channel (121), and the exhaust channel (121) is used to connect to the exhaust valve (25) of the box (2).

2. The exhaust plate structure according to claim 1, characterized in that: The exhaust plate (1) comprises an exhaust plate body (11) and a plurality of spacer plates (12); the exhaust plate body (11) is provided with a plurality of communication holes (111) arranged along a first direction; a plurality of spacer plates (12) are spaced apart on a side wall of the exhaust plate body (11) away from the battery module (3); and the exhaust channel (121) is formed between two adjacent spacer plates (12).

3. The exhaust plate structure according to claim 2, characterized in that: The partition plate (12) comprises a first plate portion (122) and a second plate portion (123) arranged at an angle, and among the plurality of partition plates (12), the spacing arrangement direction of the plurality of first plate portions (122) is arranged at an angle to the spacing arrangement direction of the plurality of second plate portions (123).

4. The exhaust plate structure according to claim 2, characterized in that: The plurality of communication holes (111) on the exhaust plate body (11) are used to fit with and communicate with the explosion-proof valves (311) of the plurality of battery cells (31).

5. The exhaust plate structure according to claim 3, characterized in that: The exhaust plate structure comprises two exhaust plates (1), the two exhaust plates (1) being used to be arranged opposite to the battery modules (3) respectively, the communication holes (111) on the two exhaust plates (1) being arranged in an array along the first direction, the exhaust plates (1) being L-shaped, and the two exhaust plates (1) forming a rectangular plate; In the exhaust plate (1), an air inlet end of the exhaust channel (121) is formed between two adjacent ends of the first plate portion (122) away from the second plate portion (123), and the communication hole (111) is located in the air inlet end, and an air outlet end (1212) of the exhaust channel (121) is formed between two adjacent ends of the second plate portion (123) away from the first plate portion (122); The air outlet ends (1212) of the two exhaust plates (1) face in opposite directions.

6. A battery box, characterized in that: The invention comprises a box body (2), a battery module (3) and an exhaust plate structure according to any one of claims 1 to 5, wherein the box body (2) comprises a cover plate (21), a bracket (22) and a shell (23), the shell (23) having an installation cavity, the battery module (3) being fixedly installed in the installation cavity by the bracket (22), and the cover plate (21) being connected to the opening edge of the shell (23).

7. The battery box according to claim 6, characterized in that: The electrical equipment comprises a frame and a seat, wherein the cover plate (21), the bottom plate of the seat and the slide rail of the seat are formed into an integral structure by using extruded profiles, and the integral structure is used to connect the frame of the electrical equipment.

8. The battery box according to claim 6, characterized in that: It also includes a liquid cooling plate (4), which is arranged between the cover plate (21) and the battery module (3), and the liquid cooling plate (4) is in contact with the battery module (3).

9. The battery box according to claim 8, characterized in that: The liquid cooling plate (4) includes a liquid cooling plate body (41), a liquid inlet plate (42) and a liquid outlet plate (43), the liquid cooling plate body (41) has a plurality of liquid cooling channels inside, the liquid inlet plate (42) and the liquid outlet plate (43) are arranged at opposite ends of the liquid cooling plate body (41), the liquid cooling channels have a liquid inlet port and a liquid outlet port, the liquid inlet port and the liquid outlet port are respectively connected to the liquid inlet plate (42) and the liquid outlet plate (43), and the liquid inlet plate (42) and the liquid outlet plate (43) are used to connect to an external liquid cooling device.

10. The battery box according to claim 6, characterized in that: The exhaust plate structure and the battery module (3) are arranged along a third direction, the battery module (3) is fitted with the exhaust plate structure, and the multiple explosion-proof valves (311) of the battery module (3) are respectively connected to the exhaust channels (121) of the exhaust plate structure, the exhaust channels (121) are located on a side wall of the exhaust plate structure away from the cover plate (21), an exhaust cavity (24) is formed between the exhaust plate structure and the inner bottom wall of the shell (23), the multiple exhaust channels (121) of the exhaust plate structure are connected to the exhaust cavity (24), and the exhaust cavity (24) is connected to the exhaust valve (25) on the shell (23).

11. The battery box according to claim 6, characterized in that: The box body (2) further comprises a sealing structure (26) and a first fastener (27); the sealing structure (26) is arranged between the cover plate (21) and the shell (23), and is respectively fitted with the edges of the opening ends of the cover plate (21) and the shell (23); the first fastener (27) is passed through the opening edge of the shell (23) and the sealing structure (26) and is connected to the cover plate (21).

12. The battery box according to claim 11, characterized in that: The box body (2) further comprises a plurality of second fasteners (28); the outer edges of the cover plate (21) and the shell (23) are respectively provided with a plurality of first slot structures (212) and a plurality of second slot structures (231) at intervals; and the two ends of the second fasteners (28) are connected to the corresponding first slot structures (212) and second slot structures (231).

13. An electrical device, characterized in that: Comprising a battery box as claimed in any one of claims 6 to 12.

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