Battery box and electric device

Abstract

The present application discloses a battery box and an electric device. The battery box comprises a box body, a battery holder, a liquid cooling module, and a battery module. The battery holder consists of a first top plate, a first bottom plate, and a supporting frame. The battery module is mounted on one side of the first bottom plate. The liquid cooling module comprises a lower liquid cooling plate fixed on the first bottom plate. The battery module is configured to be slidably mounted on the lower liquid cooling plate, facilitating assembly and disassembly, improving efficiency and convenience.

Description

Battery boxes and electrical equipment

[0001] This application claims priority to Chinese Patent Application No. 202411651229.1, filed on November 18, 2024, and Chinese Patent Application No. 202422817933.1, filed on November 18, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and in particular to a battery box and electrical equipment. Background Technology

[0003] With the continuous development of lithium-ion batteries, the heat dissipation of the battery pack, as the core of the entire power system, is receiving increasing attention. Currently, battery packs generally adopt a single bottom liquid cooling design, which results in a large temperature difference between the top and bottom of the battery pack. Especially during rapid charging and discharging and low-temperature preheating, the heat dissipation efficiency is low, which can easily cause the battery to overheat, shorten its service life, or even cause thermal runaway. Invention Overview

[0004] In related technologies, when thermal runaway occurs in a battery pack structure, the heat and liquid ejection between cells can easily come into contact with other cells, leading to the spread of thermal runaway and increasing safety hazards. Existing designs cannot effectively suppress heat propagation, further increasing the risk of the battery pack.

[0005] In a first aspect, embodiments of this application provide a battery box, comprising:

[0006] The box has an internal cavity for receiving contents;

[0007] A battery bracket is disposed within the receiving cavity. The battery bracket includes a first top plate and a first bottom plate disposed opposite to each other, and a plurality of support frames connecting the first top plate and the first bottom plate. The first bottom plate is fixedly connected to the bottom of the housing, and the plurality of support frames are arranged around the edge of the first bottom plate.

[0008] The battery module is disposed on the side of the first base plate near the first top plate;

[0009] The liquid cooling module includes a lower liquid cooling plate disposed between the first base plate and the battery module, and the lower liquid cooling plate is fixedly connected to the first base plate;

[0010] The battery module is slidably connected to the lower liquid cooling plate.

[0011] Secondly, embodiments of this application provide an electrical device, the electrical device including a battery box, the battery box comprising:

[0012] The box has an internal cavity for receiving contents;

[0013] A battery bracket is disposed within the receiving cavity. The battery bracket includes a first top plate and a first bottom plate disposed opposite to each other, and a plurality of support frames connecting the first top plate and the first bottom plate. The first bottom plate is fixedly connected to the bottom of the housing, and the plurality of support frames are arranged around the edge of the first bottom plate.

[0014] The battery module is disposed on the side of the first base plate near the first top plate;

[0015] The liquid cooling module includes a lower liquid cooling plate disposed between the first base plate and the battery module, and the lower liquid cooling plate is fixedly connected to the first base plate;

[0016] The battery module is slidably connected to the lower liquid cooling plate. Beneficial effects

[0017] The beneficial effects of this application embodiment are as follows: This application embodiment provides a battery box and electrical equipment. The battery box includes a box body, a battery bracket, a liquid cooling module, and a battery module. The box body has a receiving cavity. The battery bracket is disposed in the receiving cavity and includes a first top plate and a first bottom plate disposed opposite to each other, and a plurality of support frames connecting the first top plate and the first bottom plate. The first bottom plate is fixedly connected to the bottom of the box body, and the plurality of support frames are arranged around the edge of the first bottom plate. The battery module is disposed on the side of the first bottom plate near the first top plate. The liquid cooling module includes a lower liquid cooling plate disposed between the first bottom plate and the battery module, and the lower liquid cooling plate is fixedly connected to the first bottom plate. By slidably connecting the battery module to the lower liquid cooling plate, the battery module can be flexibly assembled or disassembled, improving the assembly efficiency and maintenance convenience of the battery module. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the battery box provided in an embodiment of this application;

[0019] Figure 2 is an exploded structural diagram of the battery box provided in the embodiment of this application;

[0020] Figure 3 is a schematic diagram of the assembled structure of the battery module, liquid cooling module and cell support provided in the embodiment of this application;

[0021] Figure 4 is a schematic diagram of the assembled battery module and lower liquid cooling plate provided in the embodiment of this application;

[0022] Figure 5 is a schematic diagram of the battery module and the lower liquid cooling plate sliding according to the embodiment of this application;

[0023] Figure 6 is a schematic diagram of the structure of the lower liquid cooling plate provided in the embodiment of this application;

[0024] Figure 7 is a schematic diagram of the structure of the battery cell support provided in the embodiment of this application;

[0025] Figure 8 is a schematic diagram of the upper liquid cooling plate provided in the embodiment of this application;

[0026] Figure 9 is an exploded view of the battery holder provided in the embodiment of this application;

[0027] Figure 10 is a schematic diagram of the battery holder in the unfolded state provided in the embodiment of this application;

[0028] Figure 11 is a schematic diagram of the exploded structure of the battery module provided in the embodiment of this application;

[0029] Figure 12 is a schematic diagram of the structure of the heat insulation board provided in the embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Battery box; 11-Box body; 12-Battery bracket; 13-Liquid cooling module; 14-Battery module; 15-Support module; 16-Copper busbar; 17-Air cooling module; 18-Heat insulation plate;

[0032] 110 - Receiving cavity; 111 - Second bottom plate; 113 - Side plate; 112 - Second top plate;

[0033] 1131 - First side panel; 1132 - Second side panel; 11311 - Air inlet; 11321 - Air outlet;

[0034] 120 - Folding connecting part; 121 - First top plate; 122 - First bottom plate; 123 - Support frame; 124 - First fixing part; 125 - Second fixing part; 126 - Third fixing part; 127 - Fourth fixing part; 128 - First baffle; 129 - Second baffle; 1231 - First support frame; 1232 - Second support frame; 1233 - Third support frame; 1234 - Fourth support frame; 1241 - First snap-fit ​​part; 1242 - First limiting part; 1251 - Second snap-fit ​​part; 1252 - Second limiting part; 1281 - First baffle; 1291 - Second baffle;

[0035] 131-Lower liquid cooling plate; 132-Upper liquid cooling plate; 1311-First guide rail; 1312-First main body; 1313-First liquid cooling part; 13111-First sub-guide rail; 13112-Second sub-guide rail; 13131-First liquid cooling sub-part; 13132-Second liquid cooling sub-part; 1321-Second main body; 1322-Second liquid cooling part; 1323-First positioning part; 1324-Second positioning part;

[0036] 140-Cell module; 141-First slide rail; 1401-Cell assembly; 1402-Cell bracket; 142-Heat dissipation duct; 144-Heat dissipation duct; 145-Connecting end plate; 140A-First cell module; 14011-First cell assembly; 14021-First cell bracket; 140B-Second cell module; 14012-Second cell assembly; 14022-Second cell bracket; 1411-First sub-slide rail; 1412-Second sub-slide rail Sub-slide groove; 1413-Third sub-slide groove; 1414-Fourth sub-slide groove; 1420-Battery cell; 14201-Pressure relief valve; 1430-Support part; 14311-First support part; 14312-Second support part; 14313-First connecting part; 14321-Third support part; 14322-Fourth support part; 14323-Second connecting part; 151-Support sub-component; 171-Fan; 181-Second slide groove; 182-Third slide groove. Embodiments of the present invention

[0037] This embodiment provides a battery box and an electrical device. Detailed descriptions are provided below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0038] Please refer to Figures 1, 2, 3, and 4; wherein, Figure 1 is a structural schematic diagram of the battery box provided in the embodiment of this application; Figure 2 is an exploded structural schematic diagram of the battery box provided in the embodiment of this application; Figure 3 is a structural schematic diagram of the battery module, liquid cooling module, and cell support after assembly provided in the embodiment of this application; Figure 4 is a structural schematic diagram of the battery module and lower liquid cooling plate after assembly provided in the embodiment of this application; Figure 5 is a structural schematic diagram of the battery module and lower liquid cooling plate sliding in the embodiment of this application.

[0039] This application provides a battery box 1, which includes a box body 11, a battery bracket 12, a liquid cooling module 13, and a battery module 14. The box body 11 provides overall structural support and protection for the battery box 1, and has a receiving cavity 110 inside, which is used to receive and fix the internal components such as the battery bracket 12, the liquid cooling module 13, and the battery module 14. The battery bracket 12 provides stable support and positioning for the battery module 14, and is disposed on the battery module 14. Within the receiving cavity 110, the battery module 14 is disposed within the battery bracket 12, which prevents the battery module 14 from shaking or shifting during transportation or operation. The liquid cooling module 13 is disposed within the battery bracket 12, and the liquid cooling module 13 and the battery module 14 are in contact with each other. The liquid cooling module 13 provides heat dissipation for the battery module 14, ensuring that the battery module 14 is maintained within a suitable temperature range in various working environments, thereby ensuring the overall stability of the battery module 14.

[0040] In one embodiment, the battery bracket 12 includes a first top plate 121 and a first bottom plate 122 disposed opposite to each other, and a plurality of support frames 123 connecting the first top plate 121 and the first bottom plate 122 of the liquid-cooled module 13. The housing 11 includes a second bottom plate 111 and a side plate 113 connected to each other. The second bottom plate 111 and the side plate 113 enclose the receiving cavity 110. The first bottom plate 122 is fixedly connected to the bottom of the housing 11, and the plurality of support frames 123 are arranged around the edge of the first bottom plate 122. One end of each support frame 123 is fixedly connected to the first top plate 121, and the other end of each support frame 123 is fixedly connected to the first bottom plate 122, thereby increasing the stability of the battery bracket 12 and making the battery module 14 more robust and durable during transportation and use.

[0041] The liquid cooling module 13 includes a lower liquid cooling plate 131 disposed between the first base plate 122 and the battery module 14, and the lower liquid cooling plate 131 is fixedly connected to the first base plate 122; wherein the battery module 14 is slidably connected to the lower liquid cooling plate 131.

[0042] It is understood that in this embodiment, by setting the lower liquid cooling plate 131 to be fixedly connected to the first base plate 122, and the battery module 14 being slidably connected to the lower liquid cooling plate 131, the battery module 14 can be easily slid into (installed) or slid out (removed) from the predetermined position in the battery bracket 12 during installation or removal, forming a drawer-like design. This reduces the installation difficulty of the battery module 14, while improving the convenience of maintaining and replacing the battery module 14, and reducing assembly time and labor costs.

[0043] Please refer to Figures 1, 2, 3, 4, and 5. In one embodiment, the liquid cooling module 13 further includes an upper liquid cooling plate 132, which is disposed between the first top plate 121 and the battery module 14. The upper liquid cooling plate 132 can be fixedly connected to the first top plate 121. The battery module 14 is disposed between the upper liquid cooling plate 132 and the lower liquid cooling plate 131, and both sides of the battery module 14 are in contact with the upper liquid cooling plate 132 and the lower liquid cooling plate 131, respectively.

[0044] Specifically, the upper liquid cooling plate 132 and the lower liquid cooling plate 131 are arranged opposite to each other, and the upper liquid cooling plate 132 and the lower liquid cooling plate 131 clamp the battery module 14, thereby forming an effective heat dissipation channel. It can be understood that, by setting the upper liquid cooling plate 132 and the liquid cooling plate, this embodiment can quickly conduct and dissipate the heat generated by the battery module 14, thereby avoiding overheating of the battery module 14, significantly improving the heat dissipation efficiency of the battery module 14, and reducing the probability of thermal runaway of the battery module 14.

[0045] The lower liquid cooling plate 131 includes a first inlet (not marked in the figure) and a first outlet (not marked in the figure) that are connected to each other. The upper liquid cooling plate 132 includes a second inlet (not marked in the figure) and a second outlet (not marked in the figure) that are connected to each other. The first inlet and the second inlet are both inlet ends of the cooling medium, and the first outlet and the second outlet are both cooling medium. Specifically, the cooling medium enters the lower liquid cooling plate 131 through the first inlet and flows along a predetermined path in the lower liquid cooling plate 131. After absorbing the heat on the lower side of the battery module 14, the liquid cooling medium is discharged from the first outlet. At the same time, the cooling medium also enters the upper liquid cooling plate 132 through the second inlet and flows in the upper liquid cooling plate 132. After absorbing the heat on the upper side of the battery module 14, it is discharged from the second outlet, thereby achieving a double-sided cooling effect.

[0046] It should be noted that the structure of the cooling channels in the lower liquid cooling plate 131 and the upper liquid cooling plate 132 can be adjusted according to design requirements to ensure that the cooling medium can fully absorb the heat of the battery module 14, thereby improving the heat dissipation efficiency and temperature uniformity of the entire battery box 1. In addition, the shape, size and arrangement of the cooling channels can be optimized according to cooling requirements to achieve the best heat dissipation effect. This embodiment does not impose specific limitations on this.

[0047] Please refer to Figures 1, 2, 3, 4, and 5; in one embodiment, the battery box 1 further includes a support module 15, which is disposed between the battery bracket 12 and the second base plate 111. One side of the support module 15 is fixedly connected to the first base plate 122, and the other side of the support module 15 is fixedly connected to the second base plate 111.

[0048] Specifically, the support module 15 includes a plurality of support sub-components 151, which are arranged around the edge of the second base plate 111. The support sub-components 151 are disposed between the first base plate 122 and the second base plate 111, with one end of the support sub-component 151 fixedly connected to the first base plate 122 and the other end of the support sub-component 151 fixedly connected to the second base plate 111. This further prevents the battery bracket 12 from deforming or moving due to external pressure or vibration, and enhances the structural stability of the battery box 1.

[0049] Please refer to Figures 2, 4, 5 and 6; wherein, Figure 6 is a schematic diagram of the structure of the lower liquid cooling plate provided in the embodiment of this application.

[0050] In one embodiment, the lower liquid cooling plate 131 is provided with a first guide rail 1311 on the side near the battery module 14, and the battery module 14 is provided with a first sliding groove 141 on the side near the lower liquid cooling plate 131. The first guide rail 1311 is embedded in the corresponding first sliding groove 141. The first sliding groove 141 is slidably connected to the first guide rail 1311. The battery module 14 can smoothly slide into or out of a predetermined position in the battery bracket 12 along the extension direction of the first guide rail 1311 through the first sliding groove 141 to form a convenient "drawer-type" structure. This allows the battery module 14 to be installed or removed without disassembling the battery bracket 12 structure, simplifying the assembly and disassembly operations of the battery module 14 and improving the convenience of maintaining and replacing the battery module 14.

[0051] Meanwhile, in this embodiment, through the cooperation of the first slide groove 141 and the first guide rail 1311, the operator can quickly slide the battery module 14 in or out, thereby reducing the assembly time of the battery module 14 and reducing maintenance time and labor costs; and the first guide rail 1311 can provide a stable guiding effect, preventing the battery module 14 from shifting or loosening during installation or disassembly, thus improving the reliability of the assembly of the battery module 14 and the battery bracket 12.

[0052] It should be noted that the predetermined position can be a fixed position or installation position pre-designed and specified by the battery module 14. By designing the predetermined position, it can be ensured that the battery module 14 can be accurately placed in the battery bracket 12 during assembly and form a stable connection with other components. The predetermined position can be flexibly adjusted according to different needs or the design requirements of the battery box 1. This embodiment does not impose specific restrictions on this.

[0053] Please refer to Figures 2, 4, 5, 6 and 7; wherein, Figure 7 is a schematic diagram of the structure of the battery cell support provided in the embodiment of this application.

[0054] In one embodiment, the battery module 14 includes at least one cell module 140, the cell module 140 including a cell assembly 1401 and a cell support 1402, the cell support 1402 being disposed between the cell assembly 1401 and the lower liquid cooling plate 131, the cell support 1402 being disposed around at least a portion of the sidewall of the cell assembly 1401; wherein, the cell support 1402 is fixedly connected to the cell assembly 1401, and the first groove 141 is disposed on the side of the cell support 1402 near the lower liquid cooling plate 131.

[0055] It is understood that in this embodiment, by placing the cell support 1402 between the cell assembly 1401 and the lower liquid cooling plate 131, and fixing the cell support 1402 to the cell assembly 1401, and by surrounding at least a portion of the sidewall of the cell assembly 1401, the cell support 1402 forms a wrapping and support for the cell assembly 1401, thereby enhancing the support and protection of the cell assembly 1401 and preventing the cell assembly 1401 from being subjected to unnecessary stress during operation or movement.

[0056] Meanwhile, by setting the first slide groove 141 on the side of the cell bracket 1402 close to the lower liquid cooling plate 131, the first slide groove 141 and the first guide rail 1311 are closely matched, so that the cell assembly 1401 can maintain a firm structural position after installation, reduce the slight displacement of the cell assembly 1401 during operation, and improve the stability and safety of the cell assembly 1401.

[0057] Furthermore, the battery box 1 also includes a plurality of copper busbars 16, each copper busbar 16 corresponding to one of the battery cell modules 140. One end of the copper busbar 16 is fixedly connected to the battery cell module 140, and the other end of the copper busbar 16 is fixedly connected to the box body 11. By using copper busbars 16 to fix the battery cell module 140 and the box body 11, the copper busbars 16 not only serve as a power conduction path, but also play a role in supporting and stabilizing the components, reducing the risk of the battery module 14 becoming loose.

[0058] Please refer to Figures 5, 6, and 7. In one embodiment, the lower liquid cooling plate 131 includes a first main body 1312 and a first liquid cooling part 1313. The first liquid cooling part 1313 is disposed on the side of the first main body 1312 near the cell assembly 1401. The first liquid cooling part 1313 protrudes from the first main body 1312 toward the cell assembly 1401. The first guide rail 1311 is disposed on the first main body 1312, and the first guide rail 1311 is located on the side of the first liquid cooling part 1313 near the edge of the lower liquid cooling plate 131.

[0059] The cell support 1402 includes a support portion 1430, which is spaced apart from the first liquid cooling portion 1313. The orthographic projection of the support portion 1430 on the first main body portion 1312 does not overlap with the orthographic projection of the first liquid cooling portion 1313 on the first main body portion 1312. The first groove 141 is formed on the side of the support portion 1430 near the lower liquid cooling plate 131, and the first groove 141 penetrates the support portion 1430 along the first direction X. The distance from the side of the first liquid cooling portion 1313 away from the first main body portion 1312 to the first main body portion 1312 is equal to the distance from the side of the support portion 1430 away from the first main body portion 1312 to the first main body portion 1312. The first liquid cooling portion 1313 corresponds to and is in contact with the cell assembly 1401.

[0060] The first guide rail 1311 extends along the first direction X, and there is a gap between the first liquid cooling part 1313 and the first guide rail 1311. The first guide rail 1311 is embedded in the corresponding first sliding groove 141, so that the battery module 14 can smoothly slide into or out of the predetermined position in the battery bracket 12 along the first direction X through the first sliding groove 141 to form a convenient "drawer-type" structure. It should be noted that this embodiment only uses the first direction as the X direction in Figure 5, the second direction as the Y direction in Figure 5, and the first direction X and the second direction Y as 90 degrees to illustrate the technical solution of this application. This embodiment does not make specific limitations on the first direction, the second direction, and the size of the included angle between the first direction and the second direction.

[0061] It is understood that, in this embodiment, by setting the orthographic projection of the support portion 1430 on the first main body portion 1312 to not overlap with the orthographic projection of the first liquid cooling portion 1313 on the first main body portion 1312, the support portion 1430 will not obstruct the heat exchange between the cell assembly 1401 and the lower liquid cooling plate 131. Simultaneously, by setting the distance from the side of the first liquid cooling portion 1313 away from the first main body portion 1312 to the first main body portion 1312 to be equal to the distance from the side of the support portion 1430 away from the first main body portion 1312 to the first main body portion 1312, the first liquid cooling portion 1313 and the cell assembly 1401 correspond to and contact each other, ensuring a good thermal contact surface between the cell assembly 1401 and the lower liquid cooling plate 131. The heat generated by the cell assembly 1401 during operation can be more effectively conducted away through the lower liquid cooling plate 131, helping to maintain the normal heat dissipation efficiency of the cell assembly 1401 and control the operating temperature of the battery module 14.

[0062] Please refer to Figures 3, 4, 6, 7, 8, and 9; Figure 8 is a schematic diagram of the upper liquid cooling plate provided in the embodiment of this application; Figure 9 is an exploded structural diagram of the battery bracket provided in the embodiment of this application.

[0063] In one embodiment, the upper liquid cooling plate 132 includes a second main body 1321, a second liquid cooling part 1322 disposed on the side of the second main body 1321 near the battery module 14, and a first positioning part 1323 and a second positioning part 1324 located on both sides of the second liquid cooling part 1322; wherein, the second liquid cooling part 1322 protrudes from the second main body 1321 toward the direction near the cell assembly 1401, and the first positioning part 1323, the second liquid cooling part 1322 and the second positioning part 1324 are arranged at intervals along the second direction Y.

[0064] The battery bracket 12 includes a first fixing part 124 and a second fixing part 125 disposed opposite to each other along the second direction Y. The first fixing part 124 is fixedly connected to the support frame 123, and the second fixing part 125 is fixedly connected to the support frame 123. The first fixing part 124 abuts against at least a portion of the first positioning part 1323, the second fixing part 125 abuts against at least a portion of the second positioning part 1324, and the second liquid cooling part 1322 corresponds to and contacts the battery cell assembly 1401.

[0065] It is understood that in this embodiment, by abutting the first positioning part 1323 and the second positioning part 1324 of the upper liquid cooling plate 132 with the first fixing part 124 and the second fixing part 125 of the battery bracket 12 respectively, the fixation and positioning accuracy between the upper liquid cooling plate 132 and the battery bracket 12 are ensured, the displacement of the upper liquid cooling plate 132 in the second direction Y is effectively limited, and its lateral sway during operation is prevented, thereby improving the stability of the connection between the upper liquid cooling plate 132 and the battery bracket 12.

[0066] Meanwhile, by setting the second liquid cooling part 1322 to correspond to and contact the cell assembly 1401, and the first liquid cooling part 1313 to correspond to and contact the cell assembly 1401, liquid cooling heat dissipation channels can be formed at the top and bottom of the cell assembly 1401, effectively enhancing the overall heat dissipation capacity of the battery module 14, allowing heat to be distributed more evenly in all parts of the battery module 14, avoiding local overheating, further reducing the risk of thermal runaway, and extending the service life of the battery module 14.

[0067] Furthermore, the first fixing part 124 includes a first snap-fit ​​part 1241 and a first limiting part 1242. The first limiting part 1242 is located on one side of the upper liquid cooling plate 132. The first snap-fit ​​part 1241 extends from the first limiting part 1242 toward the first positioning part 1323. The side of the first limiting part 1242 near the upper liquid cooling plate 132 abuts against the side of the upper liquid cooling plate 132 near the first limiting part 1242. The side of the first snap-fit ​​part 1241 near the first positioning part 1323 abuts against the side of the first positioning part 1323 near the first snap-fit ​​part 1241.

[0068] The second fixing part 125 includes a second snap-fit ​​part 1251 and a second limiting part 1252. The second limiting part 1252 is located on the other side of the upper liquid cooling plate 132. The second snap-fit ​​part 1251 extends from the second limiting part 1252 toward the direction close to the second positioning part 1324. The side of the second limiting part 1252 close to the upper liquid cooling plate 132 abuts against the side of the upper liquid cooling plate 132 close to the second limiting part 1252. The side of the second snap-fit ​​part 1251 close to the first positioning part 1323 abuts against the side of the first positioning part 1323 close to the second snap-fit ​​part 1251.

[0069] It is understood that, in this embodiment, by setting the first limiting part 1242 to one side of the upper liquid cooling plate 132, with the side of the first limiting part 1242 near the upper liquid cooling plate 132 abutting against the side of the upper liquid cooling plate 132 near the first limiting part 1242, and the second limiting part 1252 to the other side of the upper liquid cooling plate 132, with the side of the second limiting part 1252 near the upper liquid cooling plate 132 abutting against the side of the upper liquid cooling plate 132 near the second limiting part 1252, the displacement of the upper liquid cooling plate 132 is effectively restricted in the second direction Y, preventing it from swaying laterally during operation, thereby improving the stability of the connection between the upper liquid cooling plate 132 and the battery bracket 12.

[0070] Meanwhile, by setting the side of the first latching part 1241 near the first positioning part 1323 to abut against the side of the first positioning part 1323 near the first latching part 1241, and the side of the second latching part 1251 near the first positioning part 1323 to abut against the side of the first positioning part 1323 near the second latching part 1251, the displacement of the upper liquid cooling plate 132 is effectively restricted in the third direction Z, preventing it from swaying laterally during operation, and further improving the stability of the connection between the upper liquid cooling plate 132 and the battery bracket 12.

[0071] It should be noted that, in this embodiment, the third direction Z can be the direction from the first bottom plate 122 to the first top plate 121, and the third direction is the Z direction in Figure 9.

[0072] Please refer to Figures 3, 4, 6, and 9; in one embodiment, the battery bracket 12 includes a third fixing part 126 and a fourth fixing part 127 disposed opposite to each other along the second direction Y, and both the third fixing part 126 and the fourth fixing part 127 are fixedly connected to the first base plate 122; wherein, the two ends of the battery module 14 correspond to and abut against the first fixing part 124 and the second fixing part 125, respectively.

[0073] It is understood that, in this embodiment, by setting the third fixing part 126 and the fourth fixing part 127 to be arranged opposite to each other along the second direction Y and forming corresponding abutments with the two ends of the battery module 14, the fixing of the lower liquid cooling plate 131 is strengthened, the displacement of the lower liquid cooling plate 131 in the second direction Y is effectively limited, and its lateral sway during operation is prevented, thereby improving the stability of the connection between the lower liquid cooling plate 131 and the battery bracket 12.

[0074] Please refer to Figures 2, 3, 4, 5 and 10; wherein, Figure 10 is a schematic diagram of the battery holder provided in the embodiment of this application in the unfolded state.

[0075] In one embodiment, the battery holder 12 includes a first baffle 128 and a second baffle 129 disposed opposite to each other along a first direction X. The first baffle 128 is located between two adjacent support frames 123, and the second baffle 129 is located between two adjacent support frames 123. When the first baffle 128 and / or the second baffle 129 are open, the first baffle 128 and / or the second baffle 129 are rotatably connected to the first base plate 122. When the first baffle 128 and / or the second baffle 129 are closed, the first baffle 128 and / or the second baffle 129 are fixedly connected to the support frame 123.

[0076] Specifically, the first baffle 128 and the second baffle 129 are respectively disposed between adjacent support frames 123 to form a transverse structural frame. The function of the first baffle 128 and the second baffle 129 is to further constrain and stabilize the battery module 14 by transverse fixation, so as to prevent it from shifting during operation.

[0077] Please refer to Figures 2, 3, 4, 5, and 10. In one embodiment, the first baffle 128 includes a first baffle 1281, which is rotatably connected to the lower liquid cooling plate 131. The second baffle 129 includes a second baffle 1291, which is rotatably connected to the lower liquid cooling plate 131. The thickness of the first baffle 1281 is less than the thickness of the liquid cooling plate, and the thickness of the second baffle 1291 is less than the thickness of the liquid cooling plate.

[0078] Specifically, the battery bracket 12 includes a first support frame 1231, a second support frame 1232, a third support frame 1233, and a fourth support frame 1234. The first support frame 1231, the second support frame 1232, the third support frame 1233, and the fourth support frame 1234 are arranged around the edge of the first base plate 122. The first support frame 1231 and the second support frame 1232 are arranged opposite each other along the second direction Y, and the third support frame 1233 and the fourth support frame 1234 are arranged opposite each other along the second direction Y. The third support frame 1233 is arranged opposite to the first support frame X along the first direction X, and the second support frame 1232 and the fourth support frame 1234 are arranged opposite to each other along the first direction X; wherein, when the first stop frame 128 is closed, one end of the first stop frame 128 is fixedly connected to the third support frame 1233, and the other end of the first stop frame 128 is fixedly connected to the fourth support frame 1234; when the second stop frame 129 is closed, one end of the second stop frame 129 is fixedly connected to the first support frame 1231, and the other end of the second stop frame 129 is fixedly connected to the second support frame 1232.

[0079] It is understood that the design of the first baffle 128 and the second baffle 129 allows them to be opened not only during the installation and removal of the battery module 14, but also closed after the battery module 14 is installed, forming a fixed connection with the support frame 123. This flexible design can provide different support and fixing functions in different states according to needs. Specifically, when the first baffle 128 and / or the second baffle 129 are open, the first baffle 128 and / or the second baffle are rotatably connected to the first base plate 122. By setting the thickness of the first baffle 1281 to be less than the thickness of the liquid cooling plate, and the thickness of the second baffle 1291 to be less than the thickness of the liquid cooling plate, the installation or removal process of the battery module 14 is facilitated. When the first baffle 128 and / or the second baffle 129 are closed, the first baffle 128 and / or the second baffle are fixedly connected to the support frame 123, forming a stable frame structure, thereby further fixing the battery module 14.

[0080] It should be noted that the battery bracket 12 also includes a folding connection part 120. The first stop frame 128 is rotatably connected to the first base plate 122 through the folding connection part 120, and the second stop frame 129 is rotatably connected to the first base plate 122 through the folding connection part 120. The folding connection part 120 may include a hinge or other structure that allows the door leaf to fold. This embodiment does not impose specific limitations on this.

[0081] Please refer to Figures 2, 3, 4, and 5; in one embodiment, the battery cell assembly 1401 includes a plurality of battery cells 1420 spaced apart along a second direction Y, and the plurality of battery cells 1420 can be electrically connected to each other via copper electrode busbars; wherein, each battery cell 1420 includes a pressure relief valve 14201, and the pressure relief valve 14201 is disposed on the side of the battery cell near the side plate 113.

[0082] Specifically, the housing 11 includes a second bottom plate 111 and a second top plate 112 disposed opposite to each other, and a plurality of side plates 113. The plurality of side plates 113 are disposed between the second top plate 112 and the second bottom plate 111, and the second top plate 112, the second bottom plate 111 and the plurality of side plates 113 enclose the receiving cavity 110. The battery bracket 12 is disposed in the receiving cavity 110. The battery cell assembly 1401 is disposed between the first top plate 121 and the second bottom plate 111 of the battery bracket 12, and the pressure relief valve 14201 of the battery cell 1420 is disposed on the side of the battery cell 1420 near the side plate 113, so that the battery cell 1420 can be arranged in a side-standing manner in the battery box 1, making the battery module 14 more compact and saving space of the battery box 1 in the third direction Z.

[0083] It is understood that the battery module 14 is arranged in a side-standing manner, which can effectively reduce the height of the battery module 14. When the battery module 14 is applied to a vehicle, by reducing the height of the battery module 14, not only can more interior space be freed up, but the vehicle design and layout can also be optimized. At the same time, the side-standing arrangement of the battery cells 1420 has high flexibility and replaceability in design and manufacturing, and can adapt to the combination of electrical equipment with different capacity requirements.

[0084] Meanwhile, it should be noted that when a battery cell experiences thermal runaway, the electrolyte inside the cell will evaporate rapidly, accompanied by the ejection of gas and liquid under high temperature and pressure. In related technologies, since battery cells are usually placed horizontally or densely arranged, when one battery cell ejects liquid or gas, the surrounding battery cells are easily affected, thus forming a chain reaction and causing large-scale runaway. In this embodiment, by setting the pressure relief valve 14201 of the battery cell 1420 on the side of the battery cell 1420 close to the side plate 113, when the internal pressure of the battery cell 1420 is too high, the pressure relief valve 14201 will preferentially release pressure and gas towards the side plate 113. This design can effectively control the direction of gas ejection, causing it to eject from the side rather than directly diffuse upward or downward, reducing the risk of internal heat and pressure spreading to other battery cells 1420, thereby reducing the probability of further spread of thermal runaway.

[0085] Please refer to Figures 1, 2, 3, 4 and 5; in one embodiment, the housing 11 includes a first side plate 1131 and a second side plate 1132 arranged opposite to each other along the second direction Y. The first side plate 1131 is provided with an air inlet 11311 and the second side plate 1132 is provided with an air outlet 11321.

[0086] The battery module 14 includes two cell modules 140 spaced apart along the second direction Y. A heat dissipation duct 144 is provided between two adjacent cell modules 140. The two ends of the heat dissipation duct 144 are respectively provided with the air inlet 11311 and the air outlet 11321. The battery box 1 also includes a wind-cooling module 17, which is disposed in the receiving cavity 110. The wind-cooling module 17 is fixedly connected to the first side plate 1131 and is disposed at the air outlet 11321.

[0087] Specifically, the air-cooled module 17 includes, but is not limited to, a fan 171. The fan 171 introduces cold air into the battery box 1 to form an airflow to remove the heat from the surface of the battery module 14. The cold air enters through the air inlet 11311 and then flows to the air outlet 11321 through the heat dissipation duct 144 to form a circulation.

[0088] It is understood that by setting a heat dissipation air duct 144 between adjacent battery cell assemblies 1401, this embodiment can effectively guide the flow of cold air, optimize the heat dissipation process, and ensure that the battery module 14 can quickly reduce its temperature when working under high load, thereby improving the heat dissipation efficiency of the battery.

[0089] In this embodiment, the liquid cooling module 13 can use coolant as the main cooling medium. Through double-sided liquid cooling (both the upper liquid cooling plate 132 and the lower liquid cooling plate 131 are equipped with liquid cooling plates), the heat generated by the battery module 14 is quickly removed, thereby effectively reducing the battery temperature. At the same time, a heat dissipation air duct 144 is provided between adjacent battery cell assemblies 1401, and the fan 171 introduces cold air into the battery box 1 to further improve the heat dissipation efficiency. By cooperating with the air cooling module 17 and the liquid cooling module 13, a highly efficient thermal management system is formed, which effectively solves the problems of uneven temperature and insufficient heat dissipation caused by using a single liquid cooling plate in related technologies.

[0090] Please refer to Figures 2, 3, 4, 5, 10, and 11; among which, Figure 11 is a schematic diagram of the exploded structure of the battery module provided in the embodiment of this application.

[0091] In one embodiment, the battery module 14 includes a first cell module 140A and a second cell module 140B. The first cell module 140A includes a first cell assembly 14011 and a first cell bracket 14021. The second cell module 140B includes a second cell assembly 14012 and a second cell bracket 14022. The first cell bracket 14021 is disposed between the first cell assembly 14011 and the lower liquid cooling plate 131, and the second cell bracket 14022 is disposed between the second cell assembly 14012 and the lower liquid cooling plate 131. The first cell assembly 14011 and the second cell assembly 14012 can be fixedly connected by a connecting end plate 145.

[0092] It is understood that by fixing each of the battery cell assemblies 1401 (first battery cell assembly 14011 and second battery cell assembly 14012) to the lower liquid cooling plate 131 through the corresponding battery cell brackets 1402 (first battery cell bracket 14021 and second battery cell bracket 14022), each battery cell assembly 1401 is provided with independent support and fixing functions, thereby preventing the first battery cell assembly 14011 and the second battery cell assembly 14012 from vibrating and moving during transportation or operation.

[0093] Furthermore, the first cell support 14021 includes a first support portion 14311 and a second support portion 14312 disposed opposite to each other along the second direction Y, and a first connecting portion 14313 connecting the first support portion 14311 and the second support portion 14312. The two ends of the first cell assembly 14011 are fixedly connected to the first support portion 14311 and the second support portion 14312 respectively. The first connecting portion 14313 is disposed on the side of the first cell assembly 14011 close to the second cell assembly 14012. In the first cell assembly 14011, the pressure relief valve 14201 of the cell 1420 is disposed on the side of the first cell assembly 14011 away from the second cell assembly 14012.

[0094] The second cell support 14022 includes a third support portion 14321 and a fourth support portion 14322 disposed opposite to each other along the second direction Y, and a second connecting portion 14323 connecting the third support portion 14321 and the fourth support portion 14322. The two ends of the second cell assembly 14012 are fixedly connected to the third support portion 14321 and the fourth support portion 14322 respectively. The second connecting portion 14323 is disposed on the side of the second cell assembly 14012 close to the first cell assembly 14011. In the second cell assembly 14012, the pressure relief valve 14201 of the cell 1420 is disposed on the side of the second cell assembly 14012 away from the first cell assembly 14011.

[0095] It is understood that in this embodiment, by setting the two ends of the first cell assembly 14011 to be fixedly connected to the first support portion 14311 and the second support portion 14312 respectively, and the two ends of the second cell assembly 14012 to be fixedly connected to the third support portion 14321 and the fourth support portion 14322 respectively, the first cell assembly 14011 and the second cell assembly 14012 are stably supported within the housing 11, reducing damage to the cell assembly 1401 caused by vibration and external forces, thereby improving the strength and durability of the battery box 1 structure.

[0096] Meanwhile, by placing the first connecting portion 14313 on the side of the first cell assembly 14011 near the second cell assembly 14012, and placing the second connecting portion 14323 on the side of the second cell assembly 14012 near the first cell assembly 14011, it not only helps to improve the structural strength between the first cell assembly 14011 and the second cell assembly 14012 and avoid mutual interference between them, but also controls the heat transfer path between them, ensuring that each cell assembly 1401 operates independently and effectively.

[0097] Please refer to Figures 2, 3, 4, 5, 10, and 11; in one embodiment, the lower liquid cooling plate 131 has a first sub-guide rail 13111 and a second sub-guide rail 13112 on the side near the battery module 14, the first support portion 14311 has a first sub-slide groove 1411 on the side near the lower liquid cooling plate 131, and the second support portion 14312 has a second sub-slide groove 1412 on the side near the lower liquid cooling plate 131. The third sub-slide groove 1413 is provided on the side of the third support 14321 near the lower liquid cooling plate 131, and the fourth sub-slide groove 1414 is provided on the side of the fourth support 14322 near the lower liquid cooling plate 131; wherein, the first sub-slide groove 1411 and the third sub-slide groove 1413 are both sleeved on the first sub-guide rail 13111, and the second sub-slide groove 1412 and the fourth sub-slide groove 1414 are both sleeved on the second sub-guide rail 13112.

[0098] It is understood that, in this embodiment, by setting the first sub-slide groove 1411 and the third sub-slide groove 1413 to be fitted onto the first sub-guide rail 13111, and the second sub-slide groove 1412 and the fourth sub-slide groove 1414 to be fitted onto the second sub-guide rail 13112, the first cell assembly 14011 and the second cell assembly 14012 can simultaneously and smoothly slide into or out of the predetermined position in the battery bracket 12 along the first direction X, forming a convenient "drawer-type" structure. This allows the battery module 14 to be installed or removed without disassembling the battery bracket 12 structure, simplifying the assembly and disassembly operations of the battery module 14 and improving the convenience of maintaining and replacing the battery module 14.

[0099] Please refer to Figures 2, 11, and 12; Figure 12 is a schematic diagram of the structure of the heat insulation board provided in the embodiment of this application.

[0100] In one embodiment, the battery box 1 further includes a heat insulation plate 18, at least a portion of which is disposed between the first cell assembly 14011 and the second cell assembly 14012, and the heat insulation plate 18 is in direct contact with both the first cell assembly 14011 and the second cell assembly 14012.

[0101] It is understood that during the operation of the battery module 14, different cell components 1401 may experience localized overheating due to uneven temperature. In this embodiment, by placing at least a portion of the heat insulation plate 18 between the first cell component 14011 and the second cell component 14012, heat can be prevented from being transferred to other cell components 1401 when one cell component 1401 experiences an overheating, thereby reducing chain reactions and improving the safety of the entire battery box 1.

[0102] Furthermore, the heat insulation plate 18 has a second sliding groove 181 and a third sliding groove 182 on the side near the lower liquid cooling plate 131. The second sliding groove 181 is sleeved on the first sub-guide rail 13111, and the third sliding groove 182 is sleeved on the second sub-guide rail 13112. The first sub-sliding groove 1411, the third sub-sliding groove 1413 and the second sliding groove 181 are interconnected, and the second sub-sliding groove 1412, the fourth sub-sliding groove 1414 and the third sliding groove 182 are interconnected.

[0103] Specifically, the lower liquid cooling plate 131 is provided with a first liquid cooling sub-part 13131 and a second liquid cooling sub-part 13132 on the first main body 1312. The first liquid cooling sub-part 13131 is disposed and in contact with the first cell assembly 14011, and the second liquid cooling sub-part 13132 is disposed and in contact with the second cell assembly 14012. This allows the lower liquid cooling plate 131 to provide cooling for different cell assemblies 1401, ensuring that heat can be dissipated quickly and effectively from the cell and preventing the battery module 14 from overheating.

[0104] The first liquid-cooled sub-part 13131 and the second liquid-cooled sub-part 13132 have a gap, and at least a portion of the heat insulation plate 18 is disposed within the gap, thereby ensuring physical isolation between the heat insulation plate 18, the first liquid-cooled sub-part 13131 and the second liquid-cooled sub-part 13132, which helps to better control heat flow; furthermore, at least a portion of the first connecting part 14313 and at least a portion of the second connecting part 14323 are disposed within the gap, thereby making the structure of the battery module 14 more compact and improving space utilization.

[0105] It is understood that by fitting the second slide groove 181 onto the first sub-slide groove 1411 and the third slide groove 182 onto the second sub-slide groove 1412, a stable structure can be formed between the heat insulation plate 18 and the lower liquid cooling plate 131, preventing the heat insulation plate 18 from shifting or falling off due to vibration during transportation or operation.

[0106] Meanwhile, by setting the first sub-slide 1411, the third sub-slide 1413 and the second slide 181 to be interconnected, and the second sub-slide 1412, the fourth sub-slide 1414 and the third slide 182 to be interconnected, the first battery cell module 140, the heat insulation plate 18 and the second battery cell module 140 can be synchronously slid on the lower liquid cooling plate 131. When any one of the components (the first battery cell module 140, the heat insulation plate 18 and the second battery cell module 140) is pushed or pulled, the other components will also move accordingly, thereby realizing the rapid installation of the heat insulation plate 18 and the battery cell assembly 1401 and reducing the assembly time.

[0107] This embodiment provides an electrical device, which includes the battery box described in any of the above embodiments.

[0108] It is understood that the battery box has been described in detail in the above embodiments, and will not be repeated here.

[0109] The battery box includes a battery module, which is used as a power supply for electrical equipment. Therefore, the electrical equipment also has the advantages of the battery module, which helps to simplify the overall structure of the electrical equipment. The electrical equipment can be a car, an aircraft, a mechanical production equipment, etc.

Claims

1. A battery box, wherein, include: The box has an internal cavity for receiving contents; A battery bracket is disposed within the receiving cavity. The battery bracket includes a first top plate and a first bottom plate disposed opposite to each other, and a plurality of support frames connecting the first top plate and the first bottom plate. The first bottom plate is fixedly connected to the bottom of the housing, and the plurality of support frames are arranged around the edge of the first bottom plate. The battery module is disposed on the side of the first base plate near the first top plate; The liquid cooling module includes a lower liquid cooling plate disposed between the first base plate and the battery module, and the lower liquid cooling plate is fixedly connected to the first base plate; The battery module is slidably connected to the lower liquid cooling plate.

2. The battery pack of claim 1, wherein, The lower liquid cooling plate is provided with a first guide rail on the side near the battery module, and the battery module is provided with a first sliding groove on the side near the lower liquid cooling plate. The first guide rail is embedded in the corresponding first sliding groove; wherein, the first sliding groove is slidably connected to the first guide rail.

3. The battery box according to claim 2, wherein, The battery module includes at least one cell module, the cell module includes a cell assembly and a cell bracket, the cell bracket is disposed between the cell assembly and the lower liquid cooling plate, and the cell bracket is disposed around at least a portion of the sidewall of the cell assembly; The cell support is fixedly connected to the cell assembly, and the first groove is located on the side of the cell support near the lower liquid cooling plate.

4. The battery box according to claim 3, wherein, The lower liquid cooling plate includes a first main body and a first liquid cooling part. The first liquid cooling part is disposed on the side of the first main body near the cell assembly. The first guide rail is disposed on the first main body and is located on the side of the first liquid cooling part near the edge of the lower liquid cooling plate. The cell support includes a support portion, which is spaced apart from the first liquid cooling portion. The first groove is formed on the side of the support portion near the lower liquid cooling plate, and the first groove passes through the support portion along a first direction. Wherein, the distance from the side of the first liquid cooling part away from the first main body to the first main body is equal to the distance from the side of the support part away from the first main body to the first main body, and the first liquid cooling part corresponds to and is in contact with the battery cell assembly.

5. The battery box according to any one of claims 1 to 4, wherein, The liquid cooling module further includes an upper liquid cooling plate, which is disposed between the first top plate and the battery module. The upper liquid cooling plate includes a second main body, a second liquid cooling part disposed on the side of the second main body near the battery module, and a first positioning part and a second positioning part located on both sides of the second liquid cooling part. The first positioning part, the second liquid cooling part and the second positioning part are arranged sequentially along the second direction. The battery bracket includes a first fixing part and a second fixing part disposed opposite to each other along the second direction. The first fixing part abuts against at least a portion of the first positioning part, the second fixing part abuts against at least a portion of the second positioning part, and the second liquid cooling part corresponds to and contacts the battery cell assembly.

6. The battery box according to claim 5, wherein, The first fixing part includes a first snap-fit ​​part and a first limiting part. The first limiting part is located on one side of the upper liquid cooling plate. The first snap-fit ​​part extends from the first limiting part toward the first positioning part. The side of the first limiting part near the upper liquid cooling plate abuts against the side of the upper liquid cooling plate near the first limiting part. The side of the first snap-fit ​​part near the first positioning part abuts against the side of the first positioning part near the first snap-fit ​​part. The second fixing part includes a second snap-fit ​​part and a second limiting part. The second limiting part is located on the other side of the upper liquid cooling plate. The second snap-fit ​​part extends from the second limiting part toward the direction close to the second positioning part. The side of the second limiting part close to the upper liquid cooling plate abuts against the side of the upper liquid cooling plate close to the second limiting part. The side of the second snap-fit ​​part close to the first positioning part abuts against the side of the first positioning part close to the second snap-fit ​​part.

7. The battery box according to claim 6, wherein, The battery bracket includes a third fixing part and a fourth fixing part arranged opposite to each other along a second direction, and both the third fixing part and the fourth fixing part are fixedly connected to the first base plate; wherein, the two ends of the battery module correspond to and abut against the first fixing part and the second fixing part, respectively.

8. The battery box according to any one of claims 1 to 4, wherein, The battery bracket includes a first baffle and a second baffle arranged opposite to each other along a first direction, wherein the first baffle is located between two adjacent support frames and the second baffle is located between two adjacent support frames; When the first and / or second baffles are open, the first and / or second baffles are rotatably connected to the first base plate; when the first and / or second baffles are closed, the first and / or second baffles are fixedly connected to the support frame.

9. The battery box according to claim 8, wherein, The first baffle includes a first baffle plate, which is rotatably connected to the lower liquid cooling plate; the second baffle includes a second baffle plate, which is rotatably connected to the lower liquid cooling plate. The thickness of the first baffle is less than the thickness of the liquid cooling plate, and the thickness of the second baffle is less than the thickness of the liquid cooling plate.

10. The battery box according to claim 8, wherein, The battery bracket further includes a folding connection part, the first baffle is rotatably connected to the first base plate through the folding connection part, and the second baffle is rotatably connected to the first base plate through the folding connection part.

11. The battery box according to any one of claims 1 to 4, wherein, The housing includes a second bottom plate and a side plate connected together. The side plate and the second bottom plate are detachably connected. The second bottom plate and the side plate together form the receiving cavity. The battery module includes a cell module, the cell module includes a cell assembly, the cell assembly includes a plurality of cells spaced apart along a second direction; wherein, the cell includes a pressure relief valve, the pressure relief valve being disposed on the side of the cell near the side plate.

12. The battery box according to claim 11, wherein, The battery module includes a first cell assembly, a second cell assembly, a first cell bracket, and a second cell bracket. The first cell bracket is disposed between the first cell assembly and the lower liquid cooling plate, and the second cell bracket is disposed between the second cell assembly and the lower liquid cooling plate. The first battery cell support includes a first support portion and a second support portion arranged opposite to each other along a second direction, and a first connecting portion connecting the first support portion and the second support portion. The two ends of the first battery cell assembly are respectively fixedly connected to the first support portion and the second support portion. The first connecting portion is disposed on the side of the first battery cell assembly closer to the second battery cell assembly. In the first battery cell assembly, the pressure relief valve of the battery cell is disposed on the side of the first battery cell assembly away from the second battery cell assembly. The second cell support includes a third support portion and a fourth support portion arranged opposite to each other along a second direction, and a second connecting portion connecting the third support portion and the fourth support portion. The two ends of the second cell assembly are respectively fixedly connected to the third support portion and the fourth support portion. The second connecting portion is disposed on the side of the second cell assembly close to the first cell assembly. In the second cell assembly, the pressure relief valve of the cell is disposed on the side of the second cell assembly away from the first cell assembly.

13. The battery box according to claim 12, wherein, The battery box also includes a heat insulation plate, at least a portion of which is disposed between the first cell assembly and the second cell assembly, and the heat insulation plate is in direct contact with both the first cell assembly and the second cell assembly.

14. The battery box according to claim 13, wherein, The heat insulation plate has a second groove and a third groove on the side near the lower liquid cooling plate; The lower liquid cooling plate is provided with a first sub-guide rail and a second sub-guide rail on the side near the battery module. The second slide groove is fitted onto the first sub-guide rail, and the third slide groove is fitted onto the second sub-guide rail.

15. The battery box according to claim 11, wherein, The enclosure includes a first side plate and a second side plate arranged opposite to each other along a second direction. The first side plate is provided with an air inlet, and the second side plate is provided with an air outlet. The housing also includes an air-cooling module, which is disposed within the receiving cavity, fixedly connected to the first side plate, and located at the air outlet.

16. The battery box according to claim 15, wherein, The battery module includes two cell modules spaced apart along the second direction. A heat dissipation duct is provided between two adjacent cell modules, and the two ends of the heat dissipation duct are respectively provided with the air inlet and the air outlet.

17. The battery box according to any one of claims 1 to 4, wherein, The housing includes a second bottom plate and a second top plate disposed opposite to each other, and the battery bracket is disposed between the second bottom plate and the second top plate; The battery box also includes a support module, which is disposed between the battery bracket and the second base plate. The support module includes multiple support sub-components, which are arranged around the edge of the second base plate. One side of each support sub-component is fixedly connected to the first base plate, and the other side of each support sub-component is fixedly connected to the second base plate.

18. An electrical appliance, wherein, Includes a battery box, the battery box comprising: The box has an internal cavity for receiving contents; A battery bracket is disposed within the receiving cavity. The battery bracket includes a first top plate and a first bottom plate disposed opposite to each other, and a plurality of support frames connecting the first top plate and the first bottom plate. The first bottom plate is fixedly connected to the bottom of the housing, and the plurality of support frames are arranged around the edge of the first bottom plate. The battery module is disposed on the side of the first base plate near the first top plate; The liquid cooling module includes a lower liquid cooling plate disposed between the first base plate and the battery module, and the lower liquid cooling plate is fixedly connected to the first base plate; The battery module is slidably connected to the lower liquid cooling plate.

19. The electrical equipment according to claim 18, wherein, The lower liquid cooling plate is provided with a first guide rail on the side near the battery module, and the battery module is provided with a first sliding groove on the side near the lower liquid cooling plate. The first guide rail is embedded in the corresponding first sliding groove; wherein, the first sliding groove is slidably connected to the first guide rail.

20. The electrical equipment according to claim 19, wherein, The battery module includes at least one cell module, the cell module includes a cell assembly and a cell bracket, the cell bracket is disposed between the cell assembly and the lower liquid cooling plate, and the cell bracket is disposed around at least a portion of the sidewall of the cell assembly; The cell support is fixedly connected to the cell assembly, and the first groove is located on the side of the cell support near the lower liquid cooling plate.

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