Battery device and electric equipment

Abstract

The utility model provides a battery device and electric equipment. The battery device comprises a plurality of battery monomers and a heat exchange frame, the heat exchange frame comprises a heat exchange plate and two side supporting parts, the heat exchange plate extends along a first direction and is used for cooling the battery monomers, the two side supporting parts extend along the first direction and form a U-shaped frame with the heat exchange plate, and the plurality of battery monomers are accommodated in the U-shaped frame. The two side support parts are configured to limit movement of the plurality of battery cells in a second direction, and the second direction is perpendicular to the first direction; the heat exchange frame further comprises a hanging structure which is arranged on the outer side, in the second direction, of at least one side supporting part and used for connecting the heat exchange frame and a battery box of the battery device. The first positioning structure is arranged on the outer side, in the second direction, of at least one side supporting part and used for positioning the heat exchange frame and a battery box of the battery device; and the second positioning structure is arranged on the inner side of at least one side supporting part along the second direction and is used for positioning the plurality of single batteries relative to the heat exchange frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and an electric equipment. BACKGROUND

[0002] The battery device generates heat during work or needs to be heated under cold working conditions. In order to timely export the generated heat or heat under low temperature, and ensure a good working environment of the battery device, a heat exchange plate is usually arranged in the battery device to export the heat in the battery device or heat the battery device. In the related art, the heat exchange plate is usually arranged at the bottom of the plurality of battery monomers, and the plurality of battery monomers are inconvenient to be positioned and assembled with the heat exchange plate and the battery box.

[0003] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a battery device and an electric equipment, which are easy to position and assemble the plurality of battery monomers with the heat exchange plate and the battery box.

[0005] The first aspect of the present application provides a battery device, comprising a plurality of battery monomers and a heat exchange frame, the heat exchange frame comprising a heat exchange plate and two side support parts, the heat exchange plate extending along a first direction for cooling the battery monomers, the two side support parts extending along the first direction and being connected to two ends of the heat exchange plate along a second direction to form a U-shaped frame with the heat exchange plate, the plurality of battery monomers being accommodated in the U-shaped frame, the two side support parts being configured to limit the position of the plurality of battery monomers along the second direction, the second direction being perpendicular to the first direction; wherein the heat exchange frame further comprises: a mounting structure arranged on the outer side of at least one of the side support parts along the second direction, configured to connect the heat exchange frame and a battery box of the battery device; and / or a first positioning structure arranged on the outer side of at least one of the side support parts along the second direction, configured to position the heat exchange frame and the battery box of the battery device; and / or a second positioning structure arranged on the inner side of at least one of the side support parts along the second direction, configured to position the plurality of battery monomers relative to the heat exchange frame.

[0006] According to the battery device of the embodiments of the present application, the U-shaped frame is formed by arranging the side support portions at both ends of the heat exchange plate, and after the plurality of battery monomers are installed in the U-shaped frame, the positions of the plurality of battery monomers along the second direction are limited by the two side support portions, so that the positioning and assembly of the plurality of battery monomers and the heat exchange plate are easily realized. Further, since the side support portions form the U-shaped frame with the heat exchange plate, the side support portions also play a side protection role for the plurality of battery monomers and the heat exchange plate. Since the side support portions are connected with the end portions of the heat exchange plate, the load bearing capacity of the heat exchange plate is improved, and deformation is less likely to occur, thereby facilitating the maintenance of the heat exchange capacity of the heat exchange plate. The mounting structure is arranged to connect the heat exchange frame and the battery box of the battery device, so that the heat exchange frame is fixed in the battery box, and the heat exchange frame and the plurality of battery monomers carried thereby are relatively stably installed in the battery box. The first positioning structure is arranged to facilitate the positioning and installation of the heat exchange frame and the battery monomers carried thereby relative to the battery box, so that the assembly difficulty is reduced when the heat exchange frame and the battery box are assembled. The second positioning structure is arranged to facilitate the positioning and installation of the plurality of battery monomers and the heat exchange frame, and further limits the relative movement of the plurality of battery monomers relative to the heat exchange frame, thereby reducing the assembly difficulty when the plurality of battery monomers and the heat exchange frame are assembled.

[0007] In the battery device in some embodiments, the side support portion includes a side plate arranged separately from the heat exchange plate and connected therewith.

[0008] The side support portion includes a side plate arranged separately from the heat exchange plate and connected therewith. On the one hand, the side support portion in the form of a side plate occupies less space, provides comprehensive protection, and is easy to process. On the other hand, by arranging the heat exchange plate and the two side plates separately, the design flexibility of the heat exchange frame is improved, and the design requirements of the heat exchange frame are better met. For example, by reasonably arranging the structure, composition, connection method of different parts, material and / or preparation process of the heat exchange plate and the two side plates, the requirements of easy processing and manufacturing or lower production cost are more easily met under the condition that the heat exchange frame meets the required structure, strength, function, etc. of the battery module or the battery pack.

[0009] In the battery device in some embodiments, the side plate and the heat exchange plate are fixedly connected by riveting and welding and / or fixedly connected by structural adhesive.

[0010] The heat exchange plate and the side plate are fixedly connected by riveting and / or structural adhesive, which is conducive to realizing firm connection of the heat exchange plate and the side plate, and preventing the at least one side surface of the heat exchange frame from forming a protruding structure, so that other structures matched with the at least one side surface of the heat exchange frame, such as a battery monomer, can be well matched with the heat exchange frame. In addition, even if the materials of the heat exchange plate and the side plate are different, the two can be firmly connected by riveting and / or structural adhesive.

[0011] In the battery device in some embodiments, the side plate includes a first plate body and a second plate body, a first end of the first plate body along a second direction and a first end of the second plate body along a third direction are connected to each other to form an L-shaped side plate, the third direction is perpendicular to the first direction and the second direction, and a second end of the first plate body along the second direction of the two side plates is fixedly connected to two ends of the heat exchange plate along the second direction, respectively, and a second end of the second plate body along the third direction is located at a first side of the heat exchange plate along the third direction.

[0012] By setting the side plate as an L-shaped side plate, the first plate body can be designed as a structure easy to connect with the heat exchange plate, which is conducive to setting the end of the heat exchange plate connected with the side plate as a simple structure, and simplifying the manufacturing of the heat exchange plate. In addition, in the case that the heat exchange plate of a structure and / or size can meet the cooling requirements of the plurality of battery monomers carried by the heat exchange frame, by adjusting the size of the first plate body of the side plate along the second direction and / or by adjusting the size of the second plate body along the third direction, different specifications of the battery monomers can be adapted, which is conducive to reducing design and production costs.

[0013] In the battery device in some embodiments, the second end of the first plate body along the second direction is located at a second side of the corresponding end of the heat exchange plate along the third direction.

[0014] The second end of the first plate body along the second direction is located at a second side of the corresponding end of the heat exchange plate along the third direction, so that the second plate body can carry and protect the end of the heat exchange plate, and reduce the possibility that the end of the heat exchange plate is separated from the side plate or the connection part is damaged.

[0015] In the battery device in some embodiments, the first plate body comprises a first plate body segment close to the second plate body along the second direction and a second plate body segment close to the heat exchange plate, the second plate body segment is located at a second side of a corresponding one end of the heat exchange plate along the third direction, and a surface of a first side of the heat exchange plate along the third direction is flush with a surface of a first side of the first plate body segment along the third direction or is farther away from a second end of the second plate body along the third direction than a surface of the first plate body segment along the third direction.

[0016] The arrangement of the first plate body comprising the first plate body segment and the second plate body segment and the positional relationship between the heat exchange plate and the second plate body segment facilitate increasing the capacity of the first plate body to carry the battery monomers, reducing or preventing the deformation of the heat exchange plate caused by excessive carrying of the battery monomers, thereby maintaining the shape of the fluid passage in the heat exchange plate and making the heat dissipation function of the heat exchange plate more stable.

[0017] In the battery device in some embodiments, the mounting structure is arranged on one of the two side support parts, and the first positioning structure is arranged on the other side support part.

[0018] Arranging the mounting structure and the first positioning structure on different side support parts can realize quick combination and connection of the heat exchange frame and the battery box, thereby reducing the stress of the heat exchange frame and the plurality of battery monomers carried therein during operation of the battery device.

[0019] In the battery device in some embodiments, the mounting structure comprises a hollow sheet metal part connected to the side support part and an internal support part located in the hollow part of the hollow sheet metal part and connected to the hollow sheet metal part; and / or, the first positioning structure comprises at least one bent sheet metal part connected to the side support part; and / or, the second positioning structure comprises a positioning strip arranged on the side support part and extending along the first direction, the positioning strip being arranged at an end of the side support part away from the heat exchange plate along a third direction perpendicular to the first direction and the second direction.

[0020] The hollow sheet metal part requires less metal material, thereby reducing material cost and reducing the weight of the heat exchange frame. Arranging the internal support part in the hollow sheet metal part can strengthen the strength of the hollow sheet metal part and reduce the risk of crushing of the hollow sheet metal part. The positioning strip structure is simple and can provide positioning of the plurality of battery monomers along the third direction.

[0021] In the battery device in some embodiments, the hollow sheet metal member comprises a first U-shaped structure, an open end of the first U-shaped structure is close to the side support part, and two opposite wings of the first U-shaped structure are arranged along the third direction; the internal support member comprises a second U-shaped structure, an open end of the second U-shaped structure is close to the side support part, two opposite wings of the second U-shaped structure are arranged along the third direction and are connected with the two opposite wings of the first U-shaped structure respectively, wherein the open end of the second U-shaped structure is arranged at intervals with the open end of the first U-shaped structure and / or the closed end of the second U-shaped structure is arranged at intervals with the closed end of the first U-shaped structure.

[0022] The first U-shaped structure is simple in structure, easy to manufacture, light in weight, and high in strength in multiple directions, the second U-shaped structure is arranged in the first U-shaped structure, and the local buckling critical load of the wings of the first U-shaped structure is improved, and the compression crushing performance of the first U-shaped structure is strengthened.

[0023] In the battery device in some embodiments, the two opposite wings of the first U-shaped structure are provided with connecting holes, and the connecting holes are located in the interval between the closed end of the first U-shaped structure and the closed end of the second U-shaped structure along the second direction.

[0024] The connecting holes are used for connecting the heat exchange frame and the battery box, the connecting holes are arranged in the interval between the closed end of the first U-shaped structure and the closed end of the second U-shaped structure, and the two sides of the connecting holes along the second direction are respectively supported by the closed end of the first U-shaped structure and the closed end of the second U-shaped structure, so that the connecting holes can bear larger stress, thereby facilitating the firm connection of the heat exchange frame and the battery box.

[0025] In the battery device in some embodiments, the hollow sheet metal member comprises a first U-shaped structure and a connecting flat plate, an open end of the first U-shaped structure is close to the side support part, two opposite wings of the first U-shaped structure are arranged along the third direction, the connecting flat plate is connected to the open end of the wing of the first U-shaped structure, and the first U-shaped structure is connected with the side support part through the connecting flat plate.

[0026] The connecting flat plate facilitates to improve the strength of the hollow sheet metal member in multiple directions and facilitates the firm connection of the hollow sheet metal member and the side support part.

[0027] In the battery device in some embodiments, the at least one bent sheet metal piece comprises: an L-shaped sheet metal piece comprising a first strip and a second strip connected to each other, a side of the first strip away from the second strip abutting and connected to an outer side surface of the side support portion; and / or, a J-shaped sheet metal piece comprising a third strip and a fourth strip arranged opposite to each other and a fifth strip connecting the third strip and the fourth strip, a width of the third strip being greater than a width of the fourth strip, a side of the third strip away from the fourth strip abutting and connected to the outer side surface of the side support portion.

[0028] The L-shaped sheet metal piece can provide positioning support for the heat exchange frame along the third direction, and the L-shaped sheet metal piece has a simple structure and is easy to process. The J-shaped sheet metal piece can provide positioning support for the heat exchange frame along the second direction and the third direction, and the J-shaped sheet metal piece has a simple structure and is easy to process.

[0029] In the battery device in some embodiments, the side plate is a steel plate; and / or, the side plate is a sheet metal piece; and / or, the heat exchange plate is an aluminum heat exchange plate; and / or, the heat exchange plate is an extruded piece.

[0030] With the same thickness, the side plate made of steel has higher strength than that made of aluminum, and the cost is lower, and the side plate made of steel is conducive to reducing the production cost of the heat exchange frame while meeting the strength of the heat exchange frame. The sheet metal piece is easy to process in batches, saving energy, and the side plate made of sheet metal is conducive to reducing the production cost of the heat exchange frame. The heat exchange plate made of aluminum has a large thermal conductivity, and the heat exchange plate made of aluminum can provide stable heat dissipation, which is also conducive to realizing the lightweight of the heat exchange frame. The cooling plate is an extruded piece, which is suitable for one-time forming of the fluid flow channel of the heat exchange plate, and is convenient and fast to manufacture.

[0031] In the battery device in some embodiments, end plates are further included, two of the end plates being respectively installed at two ends of the heat exchange frame along the first direction.

[0032] The two end plates are respectively installed at the two ends of the heat exchange frame, which is conducive to positioning the battery pack composed of the plurality of battery monomers relative to the heat exchange frame along the first direction, and strengthening the protection of the two ends of the battery pack along the first direction.

[0033] Another aspect of the present application provides a power consumption device comprising the battery device described above, and the battery device is used to provide power for the power consumption device.

[0034] The power consumption device of the embodiments of the present application has the advantages of the battery device of the embodiments of the present application.

[0035] The detailed description of the exemplary embodiments of the present application hereinafter with reference to the drawings is provided to assist in a comprehensive understanding of the present application, and is only used to illustrate the exemplary embodiments of the present application and their description. As such, the present application should not be construed as being limited to the exemplary embodiments set forth herein. In the drawings: BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0037] Figure 1 A schematic structural diagram of a power utilization device according to some embodiments of the present application.

[0038] Figure 2 A schematic structural diagram of a battery pack according to some embodiments of the present application.

[0039] Figure 3 A schematic structural diagram of a battery pack according to some embodiments of the present application. Figure 2 A schematic structural diagram of a battery pack according to some embodiments of the present application.

[0040] Figure 4 A schematic structural diagram of a battery pack according to some embodiments of the present application. Figure 3 A schematic structural diagram of a battery pack according to some embodiments of the present application.

[0041] Figure 5 A schematic structural diagram of a battery pack according to some embodiments of the present application. Figure 4 A schematic structural diagram of a battery pack according to some embodiments of the present application.

[0042] Figure 6 A schematic structural diagram of a battery pack according to some embodiments of the present application.

[0043] Figure 7 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application.

[0044] Figure 8 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application. Figure 7 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application.

[0045] Figure 9 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application. Figure 8 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application.

[0046] Figure 10 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application. Figure 8 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application.

[0047] Figure 11 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application. Figure 8 A schematic structural diagram of a heat exchange frame according to some embodiments of the present application.

[0048] Figures 1 to 11In the drawings, each of the following reference signs represents:

[0049] B, battery pack;

[0050] D, electrical equipment;

[0051] M, battery module;

[0052] X, first direction;

[0053] Y, second direction;

[0054] Z, third direction;

[0055] 10, heat exchange frame; 11, heat exchange plate; 12, side plate; 121, first plate body; 1211, first plate body segment; 1212, second plate body segment; 122, second plate body; 13, mounting structure; 131, hollow sheet metal part; 1311, first U-shaped structure; 13111, connecting hole; 1312, connecting flat plate; 132, internal support; 1321, second U-shaped structure; 14, first positioning structure; 141, bent sheet metal part; 1411, L-shaped sheet metal part; 14111, first plate strip; 14112, second plate strip; 1412, J-shaped sheet metal part; 14121, third plate strip; 14122, fourth plate strip; 14123, fifth plate strip; 15, second positioning structure; 151, positioning strip;

[0056] 20, end plate;

[0057] 30, battery cell;

[0058] 40, battery box. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, fall within the scope of protection of the present application.

[0060] The relative disposition of the components, numerical expressions, and numerical values set forth in these examples do not limit the scope of the present application unless otherwise specifically indicated. Also, it is to be understood that the dimensions of the various parts shown in the drawings are by no means limiting, and that the techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate. In all of the examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the several views of the drawings, and thus, once an item is defined in one view, it need not be discussed further in subsequent views.

[0061] In the description of the present application, it is necessary to understand that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] In the description of the present application, it should be understood that the use of the terms "first", "second", etc. to define parts is only for the convenience of distinguishing the corresponding parts, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0063] In the description of the present application, it should be understood that the orientation words such as "horizontal", "up", "down", "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner" and "outer" refer to the inner and outer relative to the contour of each component.

[0064] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0065] During the process of forming the present application, the inventors found that in the battery device of the related art, the heat exchange plate is arranged at the bottom of the plurality of battery monomers, and when assembling the plurality of battery monomers, the heat exchange plate and the battery box, an auxiliary structure is often needed for positioning and fixed connection, and the positioning and assembly are inconvenient. Therefore, the present application proposes a battery device, wherein a U-shaped frame is formed by arranging side support parts at both ends of the heat exchange plate extending in the first direction, and the plurality of battery monomers are accommodated in the U-shaped frame, and the two side support parts limit the movement of the plurality of battery monomers in the second direction, so that the plurality of battery monomers are positioned in the U-shaped frame, and the heat exchange frame further includes at least one of a mounting structure for connecting the heat exchange frame and the battery device, a first positioning structure for positioning the heat exchange frame and the battery box of the battery device, and a second positioning structure for positioning the plurality of battery monomers relative to the heat exchange frame, so as to easily realize the positioning and assembly of the plurality of battery monomers and the heat exchange plate.

[0066] Further, the present application also provides a power consuming device comprising the battery device.

[0067] The battery device can be in the form of a battery module or a battery pack.

[0068] The battery pack is configured to provide electrical energy to a power consuming device. The power consuming device can be, but is not limited to, a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric automobile, a ship, a spacecraft, an electric toy and an electric tool, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a stationary or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer.

[0069] The battery pack refers to a single physical module comprising one or more battery monomers to provide higher voltage and capacity. The battery pack generally comprises a box for packaging one or more battery monomers. The box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery monomers.

[0070] The battery module is a unit comprising a plurality of battery monomers for providing higher voltage and capacity. The battery monomers are connected in parallel or in series to form a battery pack, and the battery module can meet the electrical energy demand of different applications. The series connection of the battery monomers can increase the total voltage, while the parallel connection of the battery monomers can increase the total capacity. The battery module usually further comprises a protection structure for protecting the plurality of battery monomers. The protection structure is used to protect the battery pack from external environment.

[0071] The battery cell refers to the smallest unit that constitutes a battery. In the present application, the battery cell can include a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., and the present application embodiment is not limited thereto. The battery cell can be in the shape of a flat body, a cuboid or other shapes, and the present application embodiment is not limited thereto. The battery cell is generally packaged as a square battery cell and a soft-pack battery cell, and the present application embodiment is not limited thereto.

[0072] In the description of the present application, the first direction X is a horizontal direction, which corresponds to the front-rear direction of the heat exchange frame 10 and the battery module M, and also corresponds to the length direction of the heat exchange frame 10 and the battery module M; the second direction Y is a horizontal direction perpendicular to the first direction X, which corresponds to the left-right direction of the heat exchange frame 10 and the battery module M, and also corresponds to the width direction of the heat exchange frame 10 and the battery module M; the third direction Z is perpendicular to the first direction X and the second direction Y, which is a vertical direction, corresponding to the up-down direction in the heat exchange frame 10 and the battery module M, and also corresponding to the height direction of the heat exchange frame 10 and the battery module M. Figure 8 Figure 8 Figure 8

[0073] As shown in Figures 2 to 11 , the present application embodiment provides a battery device, which includes a plurality of battery cells 30 and a heat exchange frame 10. The heat exchange frame 10 includes a heat exchange plate 11 and two side support portions. The heat exchange plate 11 extends along the first direction X and is used to cool the plurality of battery cells 30. The two side support portions extend along the first direction X and are respectively connected to the two ends of the heat exchange plate 11 along the second direction Y to form a U-shaped frame with the heat exchange plate 11. The plurality of battery cells 30 are accommodated in the U-shaped frame, and the two side support portions are configured to limit the position of the plurality of battery cells 30 along the second direction Y. Wherein, the mounting structure 13 includes a hollow sheet metal piece 131 connected to the side support portion and an internal support piece 132 located in the hollow portion of the hollow sheet metal piece 131 and connected with the hollow sheet metal piece 131; and / or the first positioning structure 14 includes at least one bent sheet metal piece 141 connected to the side support portion; and / or the second positioning structure 15 includes a positioning strip 151 extending along the first direction X and arranged on the side support portion, and the positioning strip 151 is arranged at the end of the side support portion away from the heat exchange plate 11 along the third direction Z (corresponding to the upper end of Figure 8 ).

[0074] ​​​According to the battery device of the embodiment of the present application, the U-shaped frame is formed by respectively arranging the side support portions at two ends of the heat exchange plate 11, and after the plurality of battery monomers 30 are installed in the U-shaped frame, the positions of the plurality of battery monomers in the second direction Y are limited by the two side support portions, so that the positioning and assembly of the plurality of battery monomers 30 and the heat exchange plate 11 are easily realized. Further, since the side support portions form the U-shaped frame with the heat exchange plate 11, the side support portions also play a side protection role for the plurality of battery monomers 30 and the heat exchange plate 11. Since the side support portions are connected with the end portions of the heat exchange plate 11, the load bearing capacity of the heat exchange plate 11 is improved, and deformation is not easily caused, so that the heat exchange capacity of the heat exchange plate 11 is maintained. The mounting structure 13 is arranged to connect the heat exchange frame 10 and the battery box 40 of the battery device, so that the heat exchange frame 10 is fixed in the battery box 40, and the heat exchange frame 10 and the plurality of battery monomers 30 carried thereby are stably installed in the battery box 40. The first positioning structure 14 is arranged to facilitate the positioning and installation of the heat exchange frame 10 and the plurality of battery monomers 30 carried thereby relative to the battery box 40, so that the assembly difficulty is reduced when the heat exchange frame 10 and the battery box 40 are assembled. The second positioning structure 15 is arranged to facilitate the positioning and installation of the plurality of battery monomers 30 and the heat exchange frame 10, and further limit the relative movement of the plurality of battery monomers 30 relative to the heat exchange frame 10, so that the assembly difficulty is further reduced when the plurality of battery monomers 30 and the heat exchange frame 10 are assembled.

[0075] In some embodiments, the side support portion includes a side plate 12 which is separately arranged and connected with the heat exchange plate 11.

[0076] According to the battery device of the embodiment of the present application, the side support portion includes a side plate 12 which is separately arranged and connected with the heat exchange plate 11. On the one hand, the side plate type side support portion occupies less space, provides comprehensive protection, and is easy to process. On the other hand, by separately arranging the heat exchange plate 11 and the two side plates 12, the design flexibility of the heat exchange frame 10 is improved, and the design requirements of the heat exchange frame 10 are better met. For example, by reasonably arranging the structures, compositions, connection modes of different parts, materials and / or preparation processes of the heat exchange plate 11 and the two side plates 12, the requirements of easy processing and manufacturing or low production cost are more easily met under the condition that the heat exchange frame 10 meets the required structures, strengths, functions and the like of the battery module M or the battery pack B.

[0077] In some embodiments, the side plate 12 and the heat exchange plate 11 are fixedly connected by riveting and welding, and / or are fixedly connected by structural adhesive.

[0078] The heat exchange plate 11 and the side plate 12 are fixedly connected by riveting and / or structural adhesive, which is conducive to firmly connecting the heat exchange plate 11 and the side plate 12 and preventing the at least one side surface of the heat exchange frame from forming a protruding structure, so that other structures cooperating with the at least one side surface of the heat exchange frame 10, such as the battery monomer 30, can be well cooperated with the heat exchange frame 10. In addition, even if the materials of the heat exchange plate 11 and the side plate 12 are different, they can be firmly connected by riveting and / or structural adhesive.

[0079] In some embodiments, as shown in Figure 10 , the side plate 12 includes a first plate body 121 and a second plate body 122. The first end of the first plate body 121 along the second direction Y (corresponding to the end of the heat exchange plate 11 along the left-right direction away from the heat exchange plate 11) and the first end of the second plate body 122 along the third direction Z (corresponding to the lower end of the heat exchange plate 11) are connected to each other to form an L-shaped side plate. Figure 8 Figure 8 The second end of the first plate body 121 along the second direction Y (corresponding to the end of the heat exchange plate 11 along the left-right direction close to the heat exchange plate 11) of the two side plates 12 and the two ends of the heat exchange plate 11 along the second direction Y are fixedly connected, respectively, and the second end of the second plate body 122 along the third direction Z (corresponding to the upper end of the heat exchange plate 11) is located at the first side of the heat exchange plate 11 along the third direction Z (corresponding to the upper side of the heat exchange plate 11). Figure 8 Figure 8 Figure 8 By setting the side plate 12 as an L-shaped side plate, the first plate body 121 can be designed as a structure easy to connect with the heat exchange plate 11, which is conducive to setting the end of the heat exchange plate 11 connected with the side plate 12 as a simple structure and simplifying the manufacturing of the heat exchange plate 11. In addition, in the case that a heat exchange plate 11 of a certain structure and / or size can meet the cooling requirements of multiple battery monomers 30 carried by the heat exchange frame 10, different specifications of battery monomers 30 can be adapted by adjusting the size of the first plate body 121 of the side plate 12 along the second direction Y and / or by adjusting the size of the second plate body 122 along the third direction Z, which is conducive to reducing the design and production costs.

[0080] In some embodiments, as shown in , the second end of the first plate body 121 along the second direction Y is located at the second side of the corresponding end of the heat exchange plate 11 along the third direction Z (corresponding to the lower side of the heat exchange plate 11).

[0081] Figure 10 The second end of the first plate body 121 along the second direction Y is located at the second side of the corresponding end of the heat exchange plate 11 along the third direction Z, which enables the second plate body 122 to carry and protect the end of the heat exchange plate 11 and reduces the possibility of the end of the heat exchange plate 11 being separated from the side plate 12 or the connecting part being damaged. Figure 8

[0082] The second end of the first plate body 121 along the second direction Y is located at the second side of the corresponding end of the heat exchange plate 11 along the third direction Z, which enables the second plate body 122 to carry and protect the end of the heat exchange plate 11 and reduces the possibility of the end of the heat exchange plate 11 being separated from the side plate 12 or the connecting part being damaged.

[0083] ​​​​In some embodiments, as shown in Figure 9 The first plate body 121 includes a first plate body segment 1211 close to the second plate body 122 along the second direction Y and a second plate body segment 1212 close to the heat exchange plate 11, the second plate body segment 1212 being located at a second side of a corresponding end of the heat exchange plate 11 along the third direction Z (corresponding to Figure 8 the lower side of the heat exchange plate 11), the surface of the first side of the heat exchange plate 11 along the third direction Z being flush with or further away from the second end of the second plate body 122 along the third direction Z than the surface of the first side of the first plate body segment 1211 along the third direction Z.

[0084] The above arrangement of the first plate body 121 including the first plate body segment 1211 and the second plate body segment 1212 and the positional relationship between the heat exchange plate 11 and the second plate body segment 1212 facilitate increasing the capacity of the first plate body 121 to carry the battery monomer 30, reducing or preventing the deformation of the heat exchange plate 11 due to excessive carrying of the battery monomer 30, thereby maintaining the shape of the fluid passage in the heat exchange plate 11 and making the heat dissipation function of the heat exchange plate 11 more stable.

[0085] In some embodiments, as shown in Figure 8 One of the two side support portions is provided with the mounting structure 13, and the other side support portion is provided with the first positioning structure 14.

[0086] Providing the mounting structure 13 and the first positioning structure 14 on different side support portions can realize quick combination and connection of the heat exchange frame 10 and the battery box 40, thereby reducing the stress of the heat exchange frame 10 and the multiple battery monomers 30 carried therein during operation of the battery device.

[0087] In some embodiments, as shown in Figure 8 , Figure 10 and Figure 11 The mounting structure 13 includes a hollow sheet metal piece 131 connected to the side support portion and an internal support piece 132 located in the hollow portion of the hollow sheet metal piece 131 and connected to the hollow sheet metal piece 131; and / or the first positioning structure 14 includes at least one bent sheet metal piece 141 connected to the side support portion; and / or the second positioning structure 15 includes a positioning strip 151 extending along the first direction X and arranged on the side support portion, the positioning strip 151 being arranged at an end of the side support portion away from the heat exchange plate 11 along the third direction Z (corresponding to Figure 8 the upper end of the heat exchange plate 11).

[0088] The hollow sheet metal part 131 needs less metal material, can reduce the material cost, and reduce the weight of the heat exchange frame 10. The internal support 132 arranged in the hollow sheet metal part 131 can strengthen the strength of the hollow sheet metal part 131, and reduce the risk of crushing of the hollow sheet metal part 131. The positioning strip 151 has a simple structure, and can provide the battery monomer 30 with positioning in the third direction Z.

[0089] In some embodiments, as shown in Figure 4 and Figure 10 , the hollow sheet metal part 131 includes a first U-shaped structure 1311, and the open end of the first U-shaped structure 1311 is close to the side support part. The two opposite wings of the first U-shaped structure 1311 are arranged in the third direction Z. The internal support 132 includes a second U-shaped structure 1321, and the open end of the second U-shaped structure 1321 is close to the side support part. The two opposite wings of the second U-shaped structure 1321 are arranged in the third direction Z and are connected with the two opposite wings of the first U-shaped structure 1311 respectively. Wherein, the open end of the second U-shaped structure 1321 is arranged in a spaced manner with the open end of the first U-shaped structure 1311, and / or the closed end of the second U-shaped structure 1321 is arranged in a spaced manner with the closed end of the first U-shaped structure 1311.

[0090] The first U-shaped structure 1311 has a simple structure, is easy to prepare, has a lighter weight, and has a higher strength in multiple directions. The second U-shaped structure 1321 is arranged in the first U-shaped structure 1311, which can improve the local buckling critical load of the wings of the first U-shaped structure 1311 and strengthen the crushing resistance of the first U-shaped structure 1311.

[0091] In some embodiments, as shown in Figure 6 , the two opposite wings of the first U-shaped structure 1311 are provided with connecting holes 13111, and the connecting holes 13111 are located in the interval between the closed end of the first U-shaped structure 1311 and the closed end of the second U-shaped structure 1321 in the second direction Y.

[0092] The connecting holes 13111 are used to connect the heat exchange frame 10 and the battery box 40. The connecting holes 13111 are arranged in the interval between the closed end of the first U-shaped structure 1311 and the closed end of the second U-shaped structure 1321 in the second direction Y. The two sides of the connecting holes 13111 in the second direction Y are respectively supported by the closed end of the first U-shaped structure 1311 and the closed end of the second U-shaped structure 1321, which is beneficial to the connecting holes 13111 to bear a larger stress, thereby facilitating the firm connection of the heat exchange frame 10 and the battery box 40.

[0093] In some embodiments, as shown in Figure 4 and Figure 10As shown, the hollow sheet metal part 131 includes a first U-shaped structure 1311 and a connecting flat plate 1312, the opening end of the first U-shaped structure 1311 is close to the side support part, two opposite wings of the first U-shaped structure 1311 are arranged along the third direction Z, the connecting flat plate 1312 is connected to the opening end of the wing of the first U-shaped structure 1311, and the first U-shaped structure 1311 is connected to the side support part through the connecting flat plate 1312.

[0094] The connecting flat plate 1312 is beneficial to improve the strength of the hollow sheet metal part 131 in multiple directions, and is also beneficial to firmly connect the hollow sheet metal part 131 and the side support part.

[0095] In some embodiments, as shown in Figure 8 and Figure 11 As shown, the at least one bent sheet metal part 141 includes an L-shaped sheet metal part 1411 and / or a J-shaped sheet metal part 1412. The L-shaped sheet metal part 1411 includes a first strip 14111 and a second strip 14112 connected to each other, the side of the first strip 14111 away from the second strip 14112 abuts and connects with the outer side surface of the side support part. The J-shaped sheet metal part 1412 includes a third strip 14121 and a fourth strip 14122 arranged opposite to each other, and a fifth strip 14123 connecting the third strip 14121 and the fourth strip 14122, the width of the third strip 14121 is greater than the width of the fourth strip 14122, and the side of the third strip 14121 away from the fourth strip 14122 abuts and connects with the outer side surface of the side support part.

[0096] The L-shaped sheet metal part 1411 can provide positioning support for the heat exchange frame 10 along the third direction Z, and the L-shaped sheet metal part 1411 has a simple structure and is easy to process. The J-shaped sheet metal part 1412 can provide positioning support for the heat exchange frame 10 along the second direction Y and the third direction Z, and the J-shaped sheet metal part has a simple structure and is easy to process.

[0097] In some embodiments, the side plate 12 and the heat exchange plate 11 are different in material and / or preparation process.

[0098] More suitable materials and / or preparation processes for the respective required structure, strength and function can be adopted for the side plate 12 and the heat exchange plate 11 to meet the needs of easy processing and manufacturing and low production cost.

[0099] In some embodiments, the side plate 12 is a steel plate; and / or the side plate 12 is a sheet metal part; and / or the heat exchange plate 11 is an aluminum heat exchange plate; and / or the heat exchange plate 11 is an extruded part.

[0100] At the same thickness, steel side panels 12 are stronger and less expensive than aluminum. Using steel side panels 12 helps reduce the production cost of the heat exchange frame 10 while still meeting the required strength. Sheet metal components are easy to mass-produce, saving energy. Using sheet metal side panels 12 helps reduce the production cost of the heat exchange frame 10. Aluminum heat exchange plates 11 have high thermal conductivity, providing stable heat dissipation and contributing to the lightweighting of the heat exchange frame 10. Heat exchange plates 11 are extruded parts, allowing for one-step molding of the fluid flow channels within the heat exchange plate 11, making them quick and easy to manufacture.

[0101] In some embodiments, the battery device further includes an end plate 20 , and two end plates 20 are respectively mounted on both ends of the heat exchange frame 10 along the first direction X.

[0102] The two end plates 20 are respectively installed at the two ends of the heat exchange frame 10, which is conducive to positioning the battery pack composed of multiple battery cells 30 relative to the heat exchange frame 10 along the first direction X, making it easier to position and assemble multiple battery cells 30 and the heat exchange plate 11, and can enhance the protection of the two ends of the battery pack along the first direction X.

[0103] The embodiment of the present application also provides an electrical device D, such as Figure 1 As shown, the electric device D includes a battery device according to an embodiment of the present application, and the battery device is used to provide power to the electric device D.

[0104] The electric device D of the embodiment of the present application has the advantages of the battery device of the embodiment of the present application.

[0105] The following combination Figures 1 to 11 The structures of the battery device and the electrical equipment D of some embodiments of the present application are described in more detail.

[0106] The battery device of the embodiment of the present application is in the form of a battery pack B. Figure 1 As shown, the electric device D includes a battery pack B, which provides power to the electric device D.

[0107] like Figures 2 to 4 and Figure 6 As shown, the battery pack B includes a battery box 40, an end plate 20, and a plurality of battery modules M disposed within the battery box 40. The battery box 40 generally includes a box body and a box cover, which interlock to form a receiving portion for accommodating the battery modules M. To facilitate illustrating the structure within the battery box 40, only the box body of the battery box 40 is shown in the figure.

[0108] The battery module M includes a heat exchange frame 10, two end plates 20 and a plurality of battery cells 30. The heat exchange frame 10 extends along a first direction X. The plurality of battery cells 30 are arranged side by side along the first direction X and disposed in the heat exchange frame 10. The two end plates 20 are respectively mounted at two ends of the heat exchange frame 10 along the first direction X. A plurality of battery modules M are arranged side by side in a battery box 40 along a second direction Y.

[0109] As shown in Figure 7 and Figure 8 , the heat exchange frame 10 includes a heat exchange plate 11 and two side plates 12 as side support parts. The heat exchange plate 11 is used to cool the battery cells 30 and extends along the first direction X. The two side plates 12 extend along the first direction X and are separately provided and connected to the two ends of the heat exchange plate 11 along the second direction Y. The heat exchange plate 11 and the two side plates 12 form a U-shaped frame with a U-shaped cross section perpendicular to the first direction X. Among them, the side plate 12 is a steel plate and is a sheet metal part, and the heat exchange plate 11 is an aluminum heat exchange plate and is an extruded part.

[0110] As shown in Figure 8 and Figure 10 , the side plate 12 includes a first plate body 121 and a second plate body 122. The end of the first plate body 121 away from the heat exchange plate 11 at the first end along the second direction Y and the first end of the second plate body 122 along the third direction Z correspond to each other and are connected to each other to form a side plate with an L-shaped cross section perpendicular to the first direction X. The end of the first plate body 121 of the two side plates 12 along the second direction Y close to the heat exchange plate 11 and the two ends of the heat exchange plate 11 along the second direction Y are fixedly connected by riveting or structural glue. The second end of the first plate body 121 along the second direction Y is located at the second side of the corresponding end of the heat exchange plate 11 along the third direction Z. The second end of the second plate body 122 along the third direction Z is located at the first side of the heat exchange plate 11 along the third direction Z.

[0111] As shown in Figure 9 , the first plate body 121 includes a first plate body segment 1211 close to the second plate body 122 along the second direction Y and a second plate body segment 1212 close to the heat exchange plate 11. The second plate body segment 1212 is located at the second side of the corresponding end of the heat exchange plate 11 along the third direction Z, and the surface of the first side of the heat exchange plate 11 along the third direction Z is flush with the surface of the first side of the first plate body segment 1211 along the third direction Z. The first plate body 121 further includes a transition plate body segment connecting the first plate body segment 1211 and the second plate body segment 1212. The transition plate body segment is inclined from the end of the first plate body segment 1211 close to the second plate body segment 1212 to the end of the second plate body 122 close to the first plate body segment 1211. The first plate body 121 forms a three-segment plate body segment, which is beneficial to improve the strength and rigidity of the first plate body 121, the side plate 12 and the heat exchange frame.

[0112] AsFigure 5 、 Figure 8 and Figure 10 As shown, the heat exchange frame 10 includes a mounting structure 13, a first positioning structure 14, and a second positioning structure 15. The mounting structure 13 is disposed on the outer side of the side plate 12 along the second direction Y and is configured to connect the heat exchange frame 10 to the battery box 40 of the battery pack B. The first positioning structure 14 is disposed on the outer side of the side plate 12 along the second direction Y and is configured to position the heat exchange frame 10 and the battery box 40 of the battery pack B. The second positioning structure 15 is disposed on the inner side of the side plate 12 along the second direction Y and is configured to position the battery cells 30 relative to the heat exchange frame 10. For example, in an exemplary heat exchange frame 10, the mounting structure 13 is provided on one of the two side plates 12, and the first positioning structure 14 is provided on the other side plate 12. The battery module M is fixedly connected to the battery box 40 via the mounting structure 13 of the heat exchange frame 10 and / or is positioned within the battery box 40 via the first positioning structure 14 of the heat exchange frame 10.

[0113] like Figure 5 、 Figure 8 and Figure 10 As shown, the mounting structure 13 includes a hollow sheet metal component 131 connected to the side panel 12 and an internal support component 132 located in the hollow portion of the hollow sheet metal component 131 and connected to the hollow sheet metal component 131 .

[0114] The hollow sheet metal member 131 includes a first U-shaped structure 1311 and a connecting plate 1312. The open end of the first U-shaped structure 1311 is adjacent to the side panel 12. The two opposing wings of the first U-shaped structure 1311 are arranged along the third direction Z. The two connecting plates 1312 are respectively connected to the outer sides of the open ends of the two wings of the first U-shaped structure 1311. The first U-shaped structure 1311 is connected to the second plate 122 of the side panel 12 via the connecting plates 1312, for example, by spot welding the connecting plates 1312 to the second plate 122.

[0115] The internal support member 132 includes a second U-shaped structure 1321. The open end of the second U-shaped structure 1321 is adjacent to the side panel 12. The two opposing wings of the second U-shaped structure 1321 are arranged along the third direction Z and are respectively connected to the two opposing wings of the first U-shaped structure 1311. The open end of the second U-shaped structure 1321 is spaced apart from the open end of the first U-shaped structure 1311. The closed end of the second U-shaped structure 1321 is spaced apart from the closed end of the first U-shaped structure 1311.

[0116] The first U-shaped structure 1311 has two opposing wings with connection holes 13111. Along the second direction Y, the connection holes 13111 are located between the closed end of the first U-shaped structure 1311 and the closed end of the second U-shaped structure 1321. The battery module M is connected to the battery box 40 via the multiple connection holes 13111 and bolts.

[0117] As shown in Figures 7 to 9 and Figure 11 , the first positioning structure 14 includes a bent sheet metal piece 141 connected to the side plate 12. The bent sheet metal piece 141 includes an L-shaped sheet metal piece 1411 and a J-shaped sheet metal piece 1412. The L-shaped sheet metal piece 1411 includes a first strip 14111 and a second strip 14112 connected to each other, the side of the first strip 14111 away from the second strip 14112 abuts and is connected to the outer side surface of the side plate 12. The J-shaped sheet metal piece 1412 includes a third strip 14121 and a fourth strip 14122 arranged opposite to each other and a fifth strip 14123 connecting the third strip 14121 and the fourth strip 14122, the width of the third strip 14121 is greater than the width of the fourth strip 14122, and the side of the third strip 14121 away from the fourth strip 14122 abuts and is connected to the outer side surface of the side plate 12.

[0118] The L-shaped sheet metal piece 1411 on the same side plate 12 is farther away from the heat exchange plate 11 than the J-shaped sheet metal piece 1412. The bent sheet metal piece 141 on the same side plate 12 includes two J-shaped sheet metal pieces 1412, and the fifth strips 14123 of the two J-shaped sheet metal pieces 1412 abut the side surface away from the third strip 14121 and the fourth strip 14122. The L-shaped sheet metal piece 1411 on the same side plate 12 is farther away from the heat exchange plate 11 than the J-shaped sheet metal piece 1412, which can realize the positioning of the side plate 12 with different structures and parts of the battery box 40, facilitate the multi-directional positioning of the side plate 12, and facilitate the reduction of deformation of the side plate 12 and the heat exchange frame 10. The fifth strips 14123 of the two J-shaped sheet metal pieces 1412 abut the side surface away from the third strip 14121 and the fourth strip 14122, which can better withstand multi-directional loads and facilitate the reduction of deformation of the side plate 12 and the heat exchange frame 10.

[0119] As shown in Figure 8 and Figure 11 , the second positioning structure 15 includes a positioning strip 151 arranged on the side plate 12 and extending along the first direction X, and the positioning strip 151 is arranged at the end of the side plate 12 away from the heat exchange plate 11 along the third direction Z.

[0120] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones, which should be covered in the technical solution range claimed by the present application.

Claims

1. A battery device, characterized by, The application relates to a battery device, comprising: a plurality of battery cells (30); a heat exchange frame (10) comprising a heat exchange plate (11) extending along a first direction (X) for cooling the plurality of battery cells (30), and two side support portions extending along the first direction (X) and respectively connected to two ends of the heat exchange plate (11) along a second direction (Y) to form a U-shaped frame with the heat exchange plate (11), the plurality of battery cells (30) being accommodated in the U-shaped frame, the two side support portions being configured to limit movement of the plurality of battery cells (30) along the second direction (Y), the second direction (Y) being perpendicular to the first direction (X); wherein the heat exchange frame (10) further comprises: a mounting structure (13) arranged on an outer side of at least one of the side support portions along the second direction (Y) and configured to connect the heat exchange frame (10) and a battery box (40) of the battery device; and / or a first positioning structure (14) arranged on the outer side of at least one of the side support portions along the second direction (Y) and configured to position the heat exchange frame (10) and the battery box (40) of the battery device; and / or a second positioning structure (15) arranged on an inner side of at least one of the side support portions along the second direction (Y) and configured to position the plurality of battery cells relative to the heat exchange frame (10).

2. The battery device of claim 1, wherein The side support portion comprises a side plate (12) arranged separately from the heat exchange plate (11) and connected to the heat exchange plate (11).

3. The battery device of claim 2, wherein The side plate (12) and the heat exchange plate (11) are fixedly connected by riveting and welding and / or fixedly connected by structural adhesive.

4. The battery device of claim 2, wherein The side plate (12) comprises a first plate body (121) and a second plate body (122), a first end of the first plate body (121) along the second direction (Y) and a first end of the second plate body (122) along a third direction (Z) are connected to each other to form an L-shaped side plate, the third direction (Z) being perpendicular to the first direction (X) and the second direction (Y), a second end of the first plate body (121) of the two side plates (12) along the second direction (Y) is fixedly connected to two ends of the heat exchange plate (11) along the second direction (Y), respectively, and a second end of the second plate body (122) along the third direction (Z) is located at a first side of the heat exchange plate (11) along the third direction (Z).

5. The battery device of claim 4, wherein The second end of the first plate body (121) along the second direction (Y) is located at a second side of the corresponding end of the heat exchange plate (11) along the third direction (Z).

6. The battery device of claim 5, wherein The first plate body (121) comprises a first plate body segment (1211) close to the second plate body (122) along the second direction (Y) and a second plate body segment (1212) close to the heat exchange plate (11), the second plate body segment (1212) is located at a second side of a corresponding end of the heat exchange plate (11) along the third direction (Z), a surface of a first side of the heat exchange plate (11) along the third direction (Z) is flush with or further away from a second end of the second plate body (122) along the third direction (Z) than a first side of the first plate body segment (1211) along the third direction (Z).

7. The battery device of claim 1, wherein The hanging structure (13) is arranged on one of the two side support portions, and the first positioning structure (14) is arranged on the other side support portion.

8. The battery device according to claim 1, wherein The hanging structure (13) comprises a hollow metal piece (131) connected to the side support portion and an internal support piece (132) located in a hollow portion of the hollow metal piece (131) and connected to the hollow metal piece (131); and / or The first positioning structure (14) comprises at least one bent metal piece (141) connected to the side support portion; and / or The second positioning structure (15) comprises a positioning strip (151) arranged on the side support portion and extending along the first direction (X), the positioning strip (151) is arranged at an end of the side support portion away from the heat exchange plate (11) along a third direction (Z) perpendicular to the first direction (X) and the second direction (Y).

9. The battery device according to claim 8, wherein The hollow metal piece (131) comprises a first U-shaped structure (1311), an open end of the first U-shaped structure (1311) is close to the side support portion, and two opposite wings of the first U-shaped structure (1311) are arranged along the third direction (Z); The internal support piece (132) comprises a second U-shaped structure (1321), an open end of the second U-shaped structure (1321) is close to the side support portion, and two opposite wings of the second U-shaped structure (1321) are arranged along the third direction (Z) and connected to the two opposite wings of the first U-shaped structure (1311) respectively, wherein the open end of the second U-shaped structure (1321) is arranged spaced apart from the open end of the first U-shaped structure (1311) and / or the closed end of the second U-shaped structure (1321) is arranged spaced apart from the closed end of the first U-shaped structure (1311).

10. The battery device of claim 9, wherein, The two opposite wings of the first U-shaped structure (1311) are provided with connecting holes (13111), and the connecting holes (13111) are located within the interval between the closed end of the first U-shaped structure (1311) and the closed end of the second U-shaped structure (1321) along the second direction (Y).

11. The battery device of claim 8, wherein, The hollow sheet metal part (131) comprises a first U-shaped structure (1311) and a connecting flat plate (1312), the opening end of the first U-shaped structure (1311) is close to the side support part, two opposite wings of the first U-shaped structure (1311) are arranged along the third direction (Z), the connecting flat plate (1312) is connected to the opening end of the wing of the first U-shaped structure (1311), and the first U-shaped structure (1311) is connected with the side support part through the connecting flat plate (1312).

12. The battery device of claim 8, wherein, The at least one bent sheet metal part (141) comprises: An L-shaped sheet metal part (1411) comprising a first plate strip (14111) and a second plate strip (14112) connected with each other, the side of the first plate strip (14111) away from the second plate strip (14112) abuts against and is connected with the outer side surface of the side support part; and / or A J-shaped sheet metal part (1412) comprising a third plate strip (14121) and a fourth plate strip (14122) arranged oppositely and a fifth plate strip (14123) connecting the third plate strip (14121) and the fourth plate strip (14122), the width of the third plate strip (14121) is greater than the width of the fourth plate strip (14122), and the side of the third plate strip (14121) away from the fourth plate strip (14122) abuts against and is connected with the outer side surface of the side support part.

13. The battery device according to any one of claims 2 to 6, wherein the side plate (12) is a steel plate; and / or the side plate (12) is a sheet metal part; and / or the heat exchange plate (11) is an aluminum heat exchange plate; and / or the heat exchange plate (11) is an extruded part.

14. The battery device according to any one of claims 1 to 6, characterized by, Further comprising an end plate (20), two end plates (20) are respectively installed at two ends of the heat exchange frame (10) along the first direction (X).

15. An electrically powered device (D), characterized in that The battery device according to any one of claims 1 to 14 is used to provide power for the electric device (D). The battery device according to any one of claims 1 to 14 is used to provide power for the electric device (D).

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