Box body, battery and electric device

Abstract

The utility model discloses a box body, a battery and a power utilization device, and belongs to the technical field of batteries. The box body comprises a frame, a supporting piece and a separation beam, the frame and the supporting piece are connected and jointly form a containing cavity, and the supporting piece is used for supporting a battery cell of a battery; the separating beams are used for separating the accommodating cavity into a plurality of chambers; the separation beam comprises a beam body and a base which are connected, the beam body is connected with the frame, the base is connected with the frame and the supporting piece, and the two side faces, oppositely arranged in the length direction of the frame, of the base protrude out of the two corresponding side faces of the beam body. The beam body and the base which are connected are arranged in the containing cavity, and the two side faces, oppositely arranged in the length direction of the frame, of the base protrude out of the two corresponding side faces of the beam body, so that the contact area between the whole partition beam and the supporting piece is increased, and the overall stability and structural strength of the box body are improved; the light weight requirement is met, meanwhile, the battery cell bearing capacity is improved, the production cost is reduced, the appearance design difficulty is lowered, and the production efficiency and the maintenance convenience are improved.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a box body, a battery, and an electrical device. Background Art

[0002] With the increasing maturity of the development of electric vehicles, the requirements for the density energy and safety performance of battery packs are getting higher and higher. Therefore, a liquid cooling plate is integrated into the bottom plate of the battery box body, that is, the battery cells are directly placed on the liquid cooling plate. However, since the liquid cooling plate needs to bear the weight of all the battery cells, it is often necessary to weld a load-bearing plate outside the battery box, resulting in a complex production process, high production costs, and difficulty in meeting the quality and appearance requirements. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a box body, a battery, and an electrical device. By providing a connected beam body and a base in the accommodation cavity, and the base protrudes from the corresponding two side surfaces of the beam body on the two opposite side surfaces along the length direction of the frame, the contact area between the whole partition beam and the support member is increased, which helps to improve the overall stability and structural strength of the box body, meets the lightweight requirement while enhancing the supporting capacity for the battery cells. In addition, since the partition beam is arranged in the accommodation cavity, the production cost and the difficulty of appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0004] In a first aspect, this application provides a box body for use in a battery, and the box body includes:

[0005] A frame and a support member, the frame and the support member are connected and jointly form an accommodation cavity, and the support member is used to support the battery cells of the battery;

[0006] A partition beam for dividing the accommodation cavity into multiple chambers; wherein, the partition beam includes a connected beam body and a base, the beam body is connected to the frame, the base is respectively connected to the frame and the support member, and the two opposite side surfaces of the base along the length direction of the frame protrude from the corresponding two side surfaces of the beam body.

[0007] According to the box body of the present application, the top surface of the beam body and the two side surfaces arranged oppositely at intervals in the width direction are respectively connected to the frame, and the top surface and the bottom surface of the base are respectively connected to the bottom surface of the beam body and the top surface of the support member, that is, the base is arranged at one end of the beam body close to the support member, and the two side surfaces of the base arranged oppositely in the length direction of the frame protrude from the corresponding side surfaces of the beam body, that is, the partition beam has an inverted T-shaped structure, so that the contact area between the whole partition beam and the support member is increased, which helps to improve the overall stability and structural strength of the box body, and improves the supporting capacity for the battery cells while meeting the lightweight requirements. In addition, compared with the related art in which a separate load-bearing plate is arranged outside the accommodation cavity, since the partition beam is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0008] According to an embodiment of the present application, the beam body forms at least one first cavity, and the first wall surface of the first cavity closest to the support member protrudes from the outer wall surface of the base, and the first wall surface is the inner wall surface of the corresponding first cavity closest to the base.

[0009] According to an embodiment of the present application, the surface of the base close to the beam body and the surface of the support member for supporting the battery cell are located in the same plane.

[0010] According to an embodiment of the present application, the support member includes:

[0011] A liquid cooling plate, connected to the frame and connected to the surface of the base away from the beam body;

[0012] A support plate, arranged on the liquid cooling plate, and the support plate and the base are connected in the length direction of the frame for supporting the battery cell of the battery.

[0013] According to an embodiment of the present application, the support plate includes:

[0014] Two substrate plates arranged at intervals in the thickness direction of the frame;

[0015] A heating element, arranged between the two substrate plates.

[0016] According to an embodiment of the present application, the liquid cooling plate includes:

[0017] A flat plate, with the support plate and the base arranged on one surface of the flat plate;

[0018] A flow channel plate, connected to the other surface of the flat plate, and part of the flow channel plate protrudes away from the flat plate to jointly form a flow channel with the flat plate.

[0019] According to an embodiment of the present application, the support plate forms at least one second cavity.

[0020] According to an embodiment of the present application, the support member includes:

[0021] A flat plate;

[0022] A first flow channel plate, disposed on one side of the flat plate and connected to the base in the length direction of the frame;

[0023] A second flow channel plate, disposed on the other side of the flat plate, and both the first flow channel plate portion and the second flow channel plate portion protrude away from the flat plate to jointly form a flow channel with the flat plate.

[0024] According to an embodiment of the present application, the support member further includes:

[0025] A heat pipe, disposed on the side of the first flow channel plate away from the flat plate and connected to the base along the length direction of the frame.

[0026] In a second aspect, the present application provides a battery, which includes:

[0027] Multiple battery cells; and

[0028] The box body as described above, and the battery cells are installed in the box body.

[0029] In the battery according to the present application, by providing a connected beam body and a base in the accommodation cavity formed in the box body, and the two opposite side surfaces of the base protruding from the corresponding two side surfaces of the beam body along the length direction of the frame, the contact area between the whole partition beam and the support member is increased, which helps to improve the overall stability and structural strength of the box body, and while meeting the lightweight requirement, the supporting capacity for the battery cells is enhanced. In addition, since the partition beam is disposed in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0030] According to an embodiment of the present application, it further includes:

[0031] An insulating member, which is disposed between the battery cell and the inner wall of the box body.

[0032] In a third aspect, the present application provides an electrical device, which includes the battery as described above.

[0033] According to the electrical device of the present application, by arranging a connected beam and a base in the accommodating cavity formed in the box body of the battery, and the two side surfaces of the base arranged oppositely along the length direction of the frame protrude from the corresponding two side surfaces of the beam, the contact area between the whole partition beam and the support is increased, which helps to improve the overall stability and structural strength of the box body, and enhances the supporting capacity for the battery cells while meeting the lightweight requirement. In addition, since the partition beam is arranged in the accommodating cavity, the production cost and the difficulty of appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0034] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. Description of the Drawings

[0035] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0036] Figure 1 is a schematic structural diagram of the box body provided by the embodiment of the present application;

[0037] Figure 2 is a partial structural diagram of the box body provided by the embodiment of the present application with some frames hidden;

[0038] Figure 3 is one of the cross-sectional views of the box body provided by the embodiment of the present application;

[0039] Figure 4 is another cross-sectional view of the box body provided by the embodiment of the present application;

[0040] Figure 5 is a third cross-sectional view of the box body provided by the embodiment of the present application;

[0041] Figure 6 is a fourth cross-sectional view of the box body provided by the embodiment of the present application;

[0042] Figure 7 is a fifth cross-sectional view of the box body provided by the embodiment of the present application.

[0043] Reference Signs:

[0044] 100, frame;

[0045] 200, support;

[0046] 210, liquid cooling plate;

[0047] 211, flat plate;

[0048] 212, flow channel plate; 213, first flow channel plate; 214, second flow channel plate;

[0049] 220. Support plate; 2201. Second cavity;

[0050] 221. Substrate; 222. Heating element;

[0051] 230. Heat pipe;

[0052] 300. Partition beam;

[0053] 310. Beam body; 311. First cavity; 3111. First wall surface;

[0054] 320. Base;

[0055] 800. Battery cell; 900. Thermal conductive adhesive. Detailed implementation manners

[0056] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0057] Reference will be made below to Figures 1 - 7 describe a box body provided by an embodiment of the present application. The box body is applied to a battery. The box body includes a frame 100, a support member 200, and a partition beam 300.

[0058] The frame 100 and the support member 200 are connected and jointly form a receiving cavity. The support member 200 is used to support the battery cell 800 of the battery. It should be noted that the size and shape of the receiving cavity can be designed according to actual needs, and no specific limitation is imposed on this in this embodiment. The connection manner between the frame 100 and the support member 200 includes but is not limited to welding.

[0059] It can be understood that the bottom end of the frame 100 is open, and the support member 200 is connected to the frame 100 and disposed at the open end, that is, the inner surface of the frame 100 and the top surface of the support member 200 enclose the receiving cavity.

[0060] The partition beam 300 is used to divide the receiving cavity into multiple chambers; among them, the partition beam 300 includes a connected beam body 310 and a base 320. The beam body 310 is connected to the frame 100, and the base 320 is respectively connected to the frame 100 and the support member 200, and the two side surfaces of the base 320 opposite to each other along the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310. It should be noted that multiple includes two and more than two.

[0061] It can be understood that the top surface of the beam body 310 and the two side surfaces spaced oppositely along the width direction are respectively connected to the frame 100. The top surface and the bottom surface of the base 320 are respectively connected to the bottom surface of the beam body 310 and the top surface of the support member 200. That is, the base 320 is arranged at one end of the beam body 310 close to the support member 200, and the two side surfaces of the base 320 arranged oppositely along the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310. That is, the partition beam 300 has an inverted T-shaped structure, so that the contact area between the whole partition beam 300 and the support member 200 is increased, which helps to improve the overall stability and structural strength of the box body, and improves the supporting capacity for the battery cell 800 while meeting the lightweight requirement. In addition, compared with the related art in which a separate load-bearing plate is arranged outside the accommodation cavity, since the partition beam 300 is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0062] According to the box body provided by the embodiment of the present application, by arranging the connected beam body 310 and the base 320 in the accommodation cavity, and the two side surfaces of the base 320 arranged oppositely along the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310, the contact area between the whole partition beam 300 and the support member 200 is increased, which helps to improve the overall stability and structural strength of the box body, and improves the supporting capacity for the battery cell 800 while meeting the lightweight requirement. In addition, since the partition beam 300 is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0063] In some embodiments, as Figure 1 shown, a plurality of partition beams 300 are arranged, and the plurality of partition beams 300 are arranged at intervals along the length direction of the frame 100 to further improve the overall rigidity and bending resistance of the box body, thereby enhancing the supporting capacity of the box body for the battery cell 800 and being able to more effectively absorb and disperse the external impact force.

[0064] In some embodiments, as Figure 2 shown, the beam body 310 forms at least one first cavity 311, and the first wall surface 3111 of the first cavity 311 closest to the support member 200 protrudes from the outer wall surface of the base 320, and the first wall surface 3111 is the inner wall surface of the corresponding first cavity 311 closest to the base 320. It should be noted that the number and shape of the first cavities 311 can be designed according to actual needs, and the present embodiment does not make specific limitations on this.

[0065] It is understandable that, on the one hand, the first cavity 311 is formed in the beam body 310, which can reduce weight while improving the structural rigidity and strength of the box body, and can absorb and disperse external impact and vibration, thereby improving the safety of battery use. On the other hand, since the first wall 3111 (i.e., the inner bottom wall) of the first cavity 311 at the bottom is above the top wall of the base 320, it helps to improve the overall stability of the partition beam 300, especially when bearing loads in the up and down directions (i.e., the weight of the battery cell 800).

[0066] In some embodiments, Figures 2 - 7 As shown, each beam body 310 is formed with a plurality of first cavities 311 , and the plurality of first cavities 311 are spaced apart along the thickness direction of the frame 100 , so as to further improve the bending resistance of the beam body 310 , ensure the strength of the partition beam 300 and reduce the use of materials.

[0067] In some embodiments, the beam body 310 and the base 320 are an integrally formed structure, which further improves the overall strength of the partition beam 300, increases the supporting capacity of the box body for the battery cell 800, improves the production efficiency of the partition beam 300, improves the production quality, and simplifies the maintenance and repair process. Exemplarily, the beam body 310 and the base 320 are made of an integral extrusion process. Of course, in other embodiments, the beam body 310 and the base 320 can also be connected by plugging, welding, and threaded connection, etc., and this embodiment does not specifically limit this.

[0068] In some embodiments, Figures 3 - 7 As shown, a surface of the base 320 close to the beam 310 and a surface of the support member 200 for supporting the battery cell 800 are located in the same plane.

[0069] It can be understood that the side of the base 320 close to the beam 310 and the top surface of the support 200 that contacts the bottom surface of the battery cell 800 are located at the same height. Even if the base 320 extends along the length direction of the frame 100 to support the end of the battery cell 800, it can ensure that all parts of the bottom surface of the battery cell 800 are at the same height, satisfying the consistency of the adhesive thickness between the battery cell 800 and the box.

[0070] In some embodiments, Figures 4 - 7 As shown, the support member 200 and the battery cell 800 are connected by a thermally conductive adhesive 900, which not only fixes the battery cell 800 but also improves the heat exchange efficiency of the battery cell 800. The thermally conductive adhesive 900 includes but is not limited to a resin matrix (such as epoxy resin, silicone, and polyurethane, etc.).

[0071] In some embodiments, Figures 2 - 7 As shown, the support member 200 may be in at least one of the following structural forms:

[0072] First, ifFigures 2 - 5 As shown, the support member 200 includes a liquid cooling plate 210 and a support plate 220. The liquid cooling plate 210 is connected to the frame 100 and is connected to the side of the base 320 away from the beam body 310. The support plate 220 is disposed on the liquid cooling plate 210. The support plate 220 and the base 320 are connected in the length direction of the frame 100, and the support plate 220 is used to support the battery cell 800. The connection direction between the support plate 220 and the base 320 includes but is not limited to welding.

[0073] It can be understood that along the thickness direction of the frame 100, the beam body 310, the base 320, and the liquid cooling plate 210 are connected in sequence. The cell 800 is disposed on the support plate 220. That is, while the liquid cooling plate 210 dissipates heat from the cell 800 through the support plate 220, it ensures that the connection points between the cells 800 and the support member 200 located in the same chamber are on the same plane, so as to meet the adhesive requirements between the cell 800 and the box body. At the same time, the support plate 220 and the base 320 are sequentially arranged and connected along the length direction of the frame 100 to further improve the strength of the bottom of the box body and the supporting capacity for the cell 800.

[0074] In some embodiments, the support plate 220 and the liquid cooling plate 210 are connected by furnace brazing to achieve a simplified design of the bottom of the box body and improve the integration.

[0075] In some embodiments, the support plate 220 and the frame 100 are connected by one of friction stir welding process and wire filling welding process to ensure the stability of the connection between the support plate 220 and the frame 100.

[0076] In some embodiments, as Figure 4 shown, the support plate 220 forms at least one second cavity 2201, which reduces the weight while ensuring the performance of the box body, meets the lightweight requirement, and reduces the manufacturing cost. It should be noted that the number and shape of the second cavities 2201 can be designed according to actual needs, and no specific limitation is made in this embodiment. Exemplarily, the support plate 220 can be manufactured by an extrusion profile process.

[0077] In some embodiments, as Figure 4 shown, the number of the second cavities 2201 is set to be multiple, and the multiple second cavities 2201 are spaced along the length direction of the frame 100, which helps to further improve the structural stiffness and strength of the box body, while maintaining lightweight and reducing the manufacturing cost.

[0078] In some embodiments, as Figure 5As shown, the support plate 220 includes two substrate plates 221 and a heating element 222. The two substrate plates 221 are spaced apart along the thickness direction of the frame 100, and the heating element 222 is disposed between the two substrate plates 221. The heating element 222 includes, but is not limited to, a heating film or a heating plate.

[0079] It can be understood that the top surface and the bottom surface of the heating element 222 are respectively attached to the mutually adjacent surfaces of the two substrate plates 221. The substrate plate 221 located at the top is used to support the battery cell 800, and the substrate plate 221 located at the bottom is connected to the liquid cooling plate 210. Moreover, the heating element 222 and the two substrate plates 221 are both connected to the base 320, so as to improve the supporting capacity for the battery cell 800 while playing a role in heating the battery cell 800, and ensure the battery performance and service life.

[0080] In some embodiments, as Figures 3 - 5 shown, the liquid cooling plate 210 includes a flat plate 211 and a flow channel plate 212. One surface of the flat plate 211 is provided with a support plate 220 and a base 320; the flow channel plate 212 is connected to the other surface of the flat plate 211, and a part of the flow channel plate 212 protrudes away from the flat plate 211 to jointly form a flow channel for the coolant to flow with the flat plate 211. It should be noted that the shape and size of the flow channel can be designed according to actual requirements, and this embodiment does not make specific limitations on this.

[0081] It can be understood that the top surface of the flat plate 211 is provided with a connected support plate 220 and a base 320, thus providing a stable supporting effect and enhancing the overall strength and durability of the box body. A part of the flow channel plate 212 protrudes downward and is attached to the bottom surface of the flat plate 211 to achieve a more uniform distribution of the coolant, so as to achieve a more efficient heat exchange with the battery cell 800. In addition, the integrated design of the flat plate 211 and the flow channel plate 212 reduces the assembly process of the box body, which helps to achieve the lightweight and compactness of the box body.

[0082] Secondly, as Figure 6 and Figure 7 shown, the support member 200 includes a flat plate 211, a first flow channel plate 213 and a second flow channel plate 214. The first flow channel plate 213 is disposed on one side of the flat plate 211 and is connected to the base 320 in the length direction of the frame 100; the second flow channel plate 214 is disposed on the other side of the flat plate 211, and a part of the first flow channel plate 213 and a part of the second flow channel plate 214 both protrude away from the flat plate 211 to jointly form a flow channel with the flat plate 211. It should be noted that the shape and size of the flow channel can be designed according to actual requirements, and this embodiment does not make specific limitations on this.

[0083] It should be noted that when the liquid cooling plate 210 only includes the flat plate 211 and the partially upwardly convex first flow channel plate 213, interference between the first flow channel plate 213 and the partition beam 300 is inevitable. Therefore, a partially downwardly convex second flow channel plate 214 is required to cooperate with the flat plate 211, so that the first flow channel plate 213, the flat plate 211, and the second flow channel plate 214 jointly form a flow channel for the coolant to flow, optimizing the flow channel layout, effectively reducing the interference problem while maintaining the compactness and structural strength of the box body.

[0084] It can be understood that the first flow channel plate 213 protrudes upward partially and fits against the top surface of the flat plate 211, and the second flow channel plate 214 protrudes downward partially and fits against the bottom surface of the flat plate 211, so as to achieve a more uniform distribution of the coolant while using the upwardly protruding part of the first flow channel plate 213 to support the battery cell 800, and further achieve more efficient heat exchange with the battery cell 800. At the same time, the first flow channel plate 213 and the base 320 are connected along the length direction of the frame 100 to improve the overall strength of the box body and the supporting capacity for the battery cell 800. In addition, the integrated design of the flat plate 211, the first flow channel plate 213, and the second flow channel plate 214 reduces the assembly process of the box body, and helps to achieve the light weight and compactness of the box body while improving the supporting capacity for the battery cell 800.

[0085] In some embodiments, as Figure 7 shown, the support member 200 further includes a heat spreader 230. The heat spreader 230 is disposed on the side of the first flow channel plate 213 away from the flat plate 211 and is connected to the base 320 along the length direction of the frame 100. The connection method between the heat spreader 230 and the first flow channel plate 213 includes but is not limited to welding.

[0086] It can be understood that the heat spreader 230 is disposed on the side of the first flow channel plate 213 away from the flat plate 211 and is connected to the base 320, so that the top surface of the heat spreader 230 can support the battery cell 800, and further improve the supporting capacity for the battery cell 800 while achieving temperature equalization for the heat exchange between the first flow channel plate 213 and the battery cell 800.

[0087] In some embodiments, as Figure 7 shown, the heat spreader 230 includes a first planar section and a second planar section that are smoothly transitionally connected. The first planar section is respectively connected to the end of the first flow channel plate 213 and the side surface of the base 320, and the second planar section is higher than the first planar section and is connected to the protruding part on the top surface of the first flow channel plate 213 to increase the contact area with the battery cell 800, so as to ensure that the bottom surface of the battery cell 800 can be supported everywhere, and also improve the heat exchange efficiency with the battery cell 800.

[0088] The embodiment of the present application also provides a battery.

[0089] AsFigure 1 As shown, the battery includes a plurality of battery cells 800 and the above-mentioned box body, and the battery cells 800 are installed in the box body. The connection direction between the battery cells 800 and the support member 200 includes, but is not limited to, gluing. It should be noted that the number and specifications of the battery cells 800 can be designed according to actual needs, and this embodiment does not make specific limitations on this.

[0090] It should be noted that the battery cells 800 mentioned in the embodiments of the present application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. The battery cells 800 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc., and the embodiments of the present application do not limit this either. Generally, the battery cells 800 are divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this either.

[0091] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells 800 to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack, etc. The battery generally includes a box body for encapsulating one or more battery cells 800 or a plurality of battery modules. The box body can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells 800.

[0092] It can be understood that battery cells 800 are arranged between two adjacent partition beams 300 and between the partition beam 300 and the frame 100 at the end portions that are oppositely arranged along the length direction and closest to the frame 100. The top surface and the two side surfaces that are spaced apart and oppositely arranged along the width direction of the beam body 310 are respectively connected to the frame 100. The top surface and the bottom surface of the base 320 are respectively connected to the bottom surface of the beam body 310 and the top surface of the support member 200, that is, the base 320 is arranged at one end of the beam body 310 close to the support member 200, and the two side surfaces of the base 320 that are oppositely arranged along the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310. That is, the partition beam 300 has an inverted T-shaped structure, so that the overall contact area between the partition beam 300 and the support member 200 is increased, which helps to improve the overall stability and structural strength of the box body, and improves the supporting capacity for the battery cells 800 while meeting the lightweight requirements. In addition, compared with the related art in which a separate load-bearing plate is arranged outside the accommodation cavity, since the partition beam 300 is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0093] According to the battery provided by the embodiments of the present application, by arranging a connected beam body 310 and a base 320 in the accommodation cavity formed in the box body, and the two side surfaces of the base 320 opposite to each other along the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310, the contact area between the whole partition beam 300 and the support member 200 is increased, which helps to improve the overall stability and structural strength of the box body, and while meeting the lightweight requirement, the supporting capacity for the battery cell 800 is enhanced. In addition, since the partition beam 300 is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0094] Exemplarily, a plurality of battery cells 800 are arranged in the cavity along the width direction of the frame 100, so that a modular design of the battery can be realized, which is convenient for maintenance and meets different usage requirements.

[0095] In some embodiments, the battery further includes an insulating member, and an insulating member is arranged between the battery cell 800 and the inner wall of the box body, thereby effectively preventing current leakage between the battery cell 800 and the box body and avoiding potential hazards such as short circuit or thermal contact.

[0096] In some embodiments, the insulating member is formed by coating with an epoxy resin system or a polyurethane system coating. That is, it is formed by spraying at the inner wall of the frame 100, the top of the support member 200, and the outer wall of the partition beam 300.

[0097] In some embodiments, the insulating member includes a polyimide film (Polyimide Film, PI film), and an insulating member is pasted on the top surface of the support member 200 and at the connection between the support member 200 and the base 320, which reduces the influence on the use of the battery cell 800 while supporting the battery cell 800.

[0098] The embodiments of the present application further provide an electrical device including the above battery.

[0099] It should be noted that the electrical device includes but is not limited to mobile phones, laptop computers, electric toys, electric tools, battery cars, ships, spacecrafts, vehicles, and energy storage systems, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc.; the spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.; the vehicle can include electric vehicles or rail trains; the energy storage system can include energy storage containers and energy storage power stations, etc.

[0100] It can be understood that the top surface of the beam body 310 and the two side surfaces spaced oppositely in the width direction are respectively connected to the frame 100. The top surface and the bottom surface of the base 320 are respectively connected to the bottom surface of the beam body 310 and the top surface of the support member 200. That is, the base 320 is arranged at one end of the beam body 310 close to the support member 200, and the two side surfaces of the base 320 arranged oppositely in the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310. That is, the partition beam 300 has an inverted T-shaped structure, so that the contact area between the whole partition beam 300 and the support member 200 is increased, which helps to improve the overall stability and structural strength of the box body, and improves the supporting capacity for the battery cell 800 while meeting the lightweight requirement. In addition, compared with the related art in which a separate load-bearing plate is arranged outside the accommodation cavity, since the partition beam 300 is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0101] According to the electrical device provided by the embodiment of the present application, by arranging the connected beam body 310 and base 320 in the accommodation cavity formed by the box body of the battery, and the two side surfaces of the base 320 arranged oppositely in the length direction of the frame 100 protrude from the corresponding two side surfaces of the beam body 310, the contact area between the whole partition beam 300 and the support member 200 is increased, which helps to improve the overall stability and structural strength of the box body, and improves the supporting capacity for the battery cell 800 while meeting the lightweight requirement. In addition, since the partition beam 300 is arranged in the accommodation cavity, the production cost and the difficulty of the appearance design are simplified, and the production efficiency and the convenience of maintenance are improved.

[0102] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data may be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0103] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0104] In the description of the present application, the "first feature" and "second feature" may include one or more of such features.

[0105] In the description of the present application, the meaning of "a plurality of" is two or more.

[0106] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0107] In the description of the present application, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0108] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0109] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A box body, applied to a battery, characterized in that, Comprising: A frame and a support member, the frame and the support member being connected and jointly forming a receiving cavity, the support member being used for supporting the battery cell; A partition beam for partitioning the receiving cavity into a plurality of chambers; wherein, the partition beam includes a connected beam body and a base, the beam body is connected to the frame, the base is respectively connected to the frame and the support member, and two side surfaces of the base oppositely arranged along the length direction of the frame protrude from the corresponding two side surfaces of the beam body.

2. The box according to claim 1, characterized in that, The beam body forms at least one first cavity, and a first wall surface of the first cavity closest to the support member protrudes from an outer wall surface of the base, and the first wall surface is an inner wall surface of the corresponding first cavity closest to the base.

3. The casing according to claim 1 or 2, characterized in that, A surface of the base close to the beam body and a surface of the support member for supporting the cell are located in the same plane.

4. The box according to claim 1, characterized in that, The support member includes: A liquid cooling plate connected to the frame and connected to a surface of the base away from the beam body; A support plate disposed on the liquid cooling plate, the support plate and the base being connected in the length direction of the frame for supporting the battery cell.

5. The box according to claim 4, characterized in that, The support plate includes: Two substrates spaced apart along the thickness direction of the frame; A heating element disposed between the two substrates.

6. The box according to claim 4, characterized in that, The liquid cooling plate includes: A flat plate, one surface of the flat plate being provided with the support plate and the base; A flow channel plate connected to the other surface of the flat plate, and a part of the flow channel plate protruding away from the flat plate to jointly form a flow channel with the flat plate.

7. The box according to claim 4, characterized in that, The support plate forms at least one second cavity.

8. The housing according to claim 1, characterized in that, The support member includes: A flat plate; A first flow channel plate disposed on one side of the flat plate and connected to the base in the length direction of the frame; A second flow channel plate disposed on the other side of the flat plate, and parts of the first flow channel plate and the second flow channel plate both protrude away from the flat plate to jointly form a flow channel with the flat plate.

9. The box according to claim 8, wherein The support member further includes: A heat pipe disposed on a side of the first flow channel plate away from the flat plate and connected to the base in the length direction of the frame.

10. A battery, characterized in that, Comprising: A plurality of cells; And A box body according to any one of claims 1 to 9, the cells being installed in the box body.

11. The battery according to claim 10, wherein, Further comprising: An insulating member, the insulating member being disposed between the cell and the inner wall of the box body.

12. An electrical device, characterized in that, Comprising the battery according to claim 10 or 11.

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