Battery device and electric equipment

Abstract

The embodiment of the invention discloses a battery device and electric equipment, and relates to the field of batteries. The battery device comprises a box body, a high-voltage electrical part and a battery monomer, a frame of the box body comprises a first beam and a second beam, the first beam comprises a first wall and a second wall which are oppositely arranged in the first direction and a supporting structure, the first wall is close to the second beam relative to the second wall, and the supporting structure is connected with the first wall and the second wall; the first wall, the second wall and the supporting structure form a first containing space, the first wall and the second beam form a second containing space, and a heat exchange channel extending in the second direction is formed in the supporting structure. The high-voltage electrical part is accommodated in the first accommodating space; the battery cells are accommodated in the second accommodation space. According to the battery device, high-voltage electrical parts can be integrated in the battery device, so that the space utilization rate of the battery device is improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and more specifically, to a battery device and electrical equipment. Background Art

[0002] With the development of new energy technologies, battery devices are widely used in many fields. In existing battery devices, high-voltage electrical components are usually installed independently, occupying a large space inside or outside the box, resulting in low space utilization of the battery device and difficulty in achieving lightweight battery devices. Summary of the Invention

[0003] The embodiments of the present application provide a battery device and an electrical device, which can integrate high-voltage electrical components into the interior of the battery device, thereby improving the space utilization of the battery device.

[0004] In the first aspect, the present application provides a battery device, comprising a box, a high-voltage electrical component and a battery cell, the box comprising a frame, the frame comprising a first beam and a second beam arranged opposite to each other, the first beam comprising a first wall, a second wall and a support structure, the first wall and the second wall are arranged opposite to each other along a first direction, the first wall is close to the second beam relative to the second wall, the support structure connects the first wall and the second wall, the first wall, the second wall and the support structure form a first accommodating space, the first wall and the second beam form a second accommodating space, and the support structure has a heat exchange channel extending along the second direction; the high-voltage electrical component is accommodated in the first accommodating space; the battery cell is accommodated in the second accommodating space and is electrically connected to the high-voltage electrical component; wherein the first direction is perpendicular to the thickness direction of the box, and the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box.

[0005] In the technical solution of the embodiment of the present application, a first accommodating space formed by a first wall, a second wall, and a supporting structure, and a second accommodating space formed by the first wall and the second beam are provided on the first beam of the frame to accommodate high-voltage electrical components and battery cells respectively, thereby achieving physical separation and functional zoning of the two. The spatial potential of the box is utilized, and the first accommodating space formed by the first beam is used to accommodate high-voltage electrical components, thereby improving the space utilization of the box and making the overall structure of the battery device more compact. The structure within the supporting structure is reused as a heat exchange channel, eliminating the need for additional heat dissipation or heating devices, simplifying the structure while avoiding performance degradation and failure of components due to overheating, extending the service life of the high-voltage electrical components, and ensuring stable operation of the high-voltage system of the battery device.

[0006] In some embodiments of the first aspect, the high-voltage electrical component is mounted on a surface of the support structure facing the first accommodation space.

[0007] In the embodiment of the present application, the support structure, as an integral part of the first accommodating space, directly provides support for the high-voltage electrical components installed on its surface facing the first accommodating space, and the high-voltage electrical components can be fixed without additional brackets. It not only adapts to the first accommodating space structure to save space and improve the space utilization of the box, but also enhances the stability and safety of the installation of the high-voltage electrical components with the support of the support structure.

[0008] In some embodiments of the first aspect, the first wall is disposed on a surface of the heat exchange channel, and the support structure and the first wall extend along the second direction.

[0009] In an embodiment of the present application, the first wall cooperates with the heat exchange channel in the supporting structure to form a heat conduction path through direct contact or close proximity, so that the heat generated by the high-voltage electrical components can be transferred to the heat exchange channel through the first wall to achieve heat dissipation. The first wall assists in dissipating the heat of the high-voltage electrical components, thereby improving the heat dissipation effect of the high-voltage electrical components.

[0010] In some embodiments of the first aspect, the first wall includes a main body and a protrusion, the main body and the second wall are arranged opposite to each other along a first direction, the protrusion extends toward the first accommodating space, and the projection of the protrusion along a third direction toward the heat exchange channel falls on the surface of the heat exchange channel; wherein the third direction is the thickness direction of the box body.

[0011] In an embodiment of the present application, the main body of the first wall and the second wall are arranged opposite to each other along the first direction, the protrusion extends toward the first accommodating space, and the projection of the protrusion along the third direction toward the heat exchange channel falls into the surface of the heat exchange channel, thereby increasing the contact area between the first wall and the heat exchange channel and strengthening the heat conduction path between the two, so that the heat transferred from the high-voltage electrical components to the first wall can be conducted to the heat exchange channel through the protrusion, thereby improving the heat exchange efficiency and the uniformity of temperature control.

[0012] In some embodiments of the first aspect, the support structure also includes a mounting plate extending along the second direction, the mounting plate connecting the first wall and the second wall, an isolation cavity formed by an interval between the mounting plate and the heat exchange channel, and the high-voltage electrical components are arranged on the side of the mounting plate away from the isolation cavity.

[0013] In the embodiment of the present application, the isolation cavity formed by the mounting plate of the support structure and the heat exchange channel separates the high-voltage electrical components from the leakage source. The leaked liquid will first enter the isolation cavity to prevent the liquid from contacting the high-voltage electrical components. This can block the leakage from invading, improve the anti-leakage protection level of the high-voltage electrical components, and prevent their insulation performance and working stability from being affected by leakage.

[0014] In some embodiments of the first aspect, the connection method between the high-voltage electrical component and the mounting plate includes: locking or adhesive.

[0015] In the embodiments of this application, the high-voltage electrical components and mounting plate are connected using either latching or adhesives. The latching connection provides high mechanical stability and easy disassembly, making it suitable for heavy loads and complex load scenarios. The adhesive connection enhances insulation sealing, reduces vibration and noise, and reduces weight, meeting lightweight protection requirements. Both methods meet the connection strength requirements under conditions such as long-term vibration and high and low temperatures, ensuring stable insulation resistance and effectively preventing loosening and short-circuiting risks. They also balance ease of maintenance with optimized structure, providing key guarantees for the safe and reliable operation of the battery device.

[0016] In some embodiments of the first aspect, a plurality of partitions extending along the second direction are provided inside the heat exchange channel, the plurality of partitions divide the heat exchange channel into a plurality of flow channels, and each partition includes at least one connecting hole, which connects two adjacent flow channels.

[0017] In this embodiment, multiple baffles extending along the second direction within the heat exchange channel divide it into multiple flow channels. The connecting holes in each baffle allow adjacent flow channels to communicate with each other. This increases the heat exchange contact area through channel segmentation and enhances heat conduction. The connecting holes balance the flow rate and pressure of each flow channel, promote medium circulation, improve heat exchange efficiency and temperature control uniformity, and enhance the stability of the heat exchange system.

[0018] In some embodiments of the first aspect, the heat exchange medium in the heat exchange channel is a fluorinated liquid.

[0019] In the embodiment of the present application, by selecting fluorinated liquid as the heat exchange medium, its electrical insulation can reduce the risk of leakage and short circuit, and improve the safety of the battery device; its thermal stability and high specific heat capacity can achieve continuous heat exchange, and can stably control the temperature of the first wall, thereby keeping the temperature of the high-voltage electrical components within a reasonable range.

[0020] In some embodiments of the first aspect, the first wall includes a first side wall and a second side wall arranged opposite to each other along a first direction, and the first side wall is away from the first accommodating space relative to the second side wall; the battery device also includes a plurality of battery cell assemblies arranged along a second direction, the battery cell assemblies include a plurality of battery cells arranged along the first direction, and at least one end of the plurality of battery cell assemblies along the first direction abuts against the first side wall; wherein the second direction is perpendicular to the first direction and to the thickness direction of the box body.

[0021] In this embodiment, the first wall acts as an expansion beam, with its first sidewall abutting the battery cell assembly, constraining the expansion displacement of the battery cells along a first direction, keeping the expansion displacement within a relatively low range and preventing structural damage to the battery cells. The first wall also serves to both constrain the battery cells and isolate and protect them from the high-voltage area, eliminating the need for additional expansion beams or restraint beams. This improves space utilization and enables the battery assembly to maintain structural stability.

[0022] In some embodiments of the first aspect, the first wall, the second wall and the support structure are integrally formed.

[0023] In the embodiments of the present application, the first and second walls are integrally formed with the support structure, reducing the weak points of the separate connections and improving the overall strength and deformation resistance of the box. The integrally formed structure reduces the number of parts and production steps, correspondingly reducing the procurement cost of parts and the labor and material costs involved in the processing, thereby helping to improve the market competitiveness of the product. The integrally formed structure avoids gaps between the connection components, improves the sealing between the first and second walls and the support structure, reduces the impact of internal leakage of the battery device on the high-voltage electrical components, and improves the safety and reliability of the battery device.

[0024] In some embodiments of the first aspect, the frame includes two third beams arranged opposite to each other along the first direction, and the third beams are connected to the first wall, the second wall and the supporting structure.

[0025] In this embodiment, the two third beams of the frame are arranged opposite each other along a first direction and connected to the first wall, second wall, and support structure. This eliminates assembly gaps and allows the components to form an integrated frame, improving the overall torsional rigidity and bending strength of the box and enhancing its resistance to vibration and shock. They also block internal and external airflow and liquid channels, improving protective sealing performance. The welded connection eliminates the need for connectors, saving space and reducing weight for the battery assembly.

[0026] In the second aspect, the present application provides a box body, which includes a frame, the frame includes a first beam and a second beam arranged opposite to each other, the first beam includes a first wall, a second wall and a supporting structure, the first wall and the second wall are arranged opposite to each other along a first direction, the supporting structure connects the first wall and the second wall, the first wall, the second wall and the supporting structure form a first accommodating space, and the first wall and the second beam form a second accommodating space; the first accommodating space is used to accommodate high-voltage electrical components, and the second accommodating space is used to accommodate battery cells.

[0027] In a third aspect, the present application provides an electrical device, including a battery device, wherein the battery device includes the battery device in the first aspect, and the battery device is used to provide electrical energy.

[0028] In some embodiments, the electric device is a vehicle, a ship, or a spacecraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a vehicle according to an embodiment of the present application; Figure 2 A schematic structural diagram of a battery device according to an embodiment of the present application; Figure 3 A structural diagram of a battery cell according to an embodiment of the present application; Figure 4An exploded view of a battery cell according to an embodiment of the present application; Figure 5 This is a structural diagram of the box according to an embodiment of the present application; Figure 6 This is a partial top view of the box body of the embodiment of the present application; Figure 7 A partial cross-sectional view of a box body according to an embodiment of the present application; Figure 8 Another partial cross-sectional view of the box body according to an embodiment of the present application; Figure 9 This is another partial cross-sectional view of the box body according to the embodiment of the present application; Figure 10 This is a partial structural diagram of the box body of an embodiment of the present application.

[0030] In the drawings, the drawings are not drawn to scale.

[0031] Reference numerals: 1000-vehicle; 100-battery device; 10-housing; 101-first housing portion; 102-second housing portion; 11-frame; 110-first beam; 111-second wall; 12-first wall; 121-main body; 122-projection; 13-support structure; 131-heat exchange channel; 1311-partition; 1312-liquid inlet; 1313-liquid outlet; 132-mounting plate; 141-first accommodating space; 142-second accommodating space; 20-battery cell; 21-housing; 211-opening; 22-end cover; 23-electrode terminal; 24-pressure relief mechanism; 25-electrode assembly; 251-ear; 30-high-voltage electrical component; 200-motor; 300-controller. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0035] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0037] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0038] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0039] The term "multiple" used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two (including two) groups, and "multiple sheets" refers to more than two (including two) sheets.

[0040] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0041] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0042] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0043] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0044] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0045] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0046] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells with a cable tie.

[0047] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0048] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0049] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0050] As an example, the housing may include a first housing portion and a second housing portion. The first and second housing portions engage to form an enclosed space within the housing to house the battery cell assembly. Enclosed here means covered or closed, and can be either sealed or unsealed. The first housing portion may be a top cover or a bottom plate.

[0051] As an example, the box body may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the box body for accommodating the battery cell assembly.

[0052] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0053] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0054] With the development of new energy technologies, battery devices are widely used in many fields. In existing battery devices, high-voltage electrical components are usually installed independently, occupying a large space inside or outside the box, resulting in low space utilization of the battery device and difficulty in achieving lightweight battery devices.

[0055] Based on the above considerations, an embodiment of the present application provides a battery device that can integrate high-voltage electrical components into the interior of the battery device, thereby improving the space utilization of the battery device. The battery device provided in the embodiment of the present application includes a box, high-voltage electrical components, and a battery cell. The box includes a frame, the frame includes a first beam and a second beam arranged opposite to each other, the first beam includes a first wall, a second wall, and a support structure, the first wall and the second wall are arranged opposite to each other along a first direction, the first wall is close to the second beam relative to the second wall, the support structure connects the first wall and the second wall, the first wall, the second wall, and the support structure form a first accommodating space, the first wall and the second beam form a second accommodating space, and the support structure has a heat exchange channel extending along the second direction; the high-voltage electrical components are accommodated in the first accommodating space; the battery cell is accommodated in the second accommodating space and is connected to the high-voltage electrical components; wherein the first direction is perpendicular to the thickness direction of the box, the second direction is perpendicular to the first direction, and is also perpendicular to the thickness direction of the box.

[0056] In the embodiment of the present application, a first accommodation space formed by a first wall, a second wall, and a support structure, and a second accommodation space formed by the first wall and the second beam are provided on the first beam of the frame to accommodate high-voltage electrical components and battery cells, respectively, thereby achieving physical separation and functional zoning of the two. This utilizes the spatial potential of the box body, and the first accommodation space formed by the first beam is used to accommodate high-voltage electrical components, thereby improving the space utilization of the box body and making the overall structure of the battery device more compact. By reusing the structure within the support structure as a heat exchange channel, no additional heat dissipation or heating device is required, simplifying the structure while avoiding performance degradation and failure of components due to overheating, extending the service life of the high-voltage electrical components, and ensuring stable operation of the high-voltage system of the battery device.

[0057] The technical solutions described in the embodiments of the present application are applicable to various electrical equipment using battery devices. Electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0058] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0059] For example, Figure 1 Schematic diagram of the structure of the vehicle of the embodiment of the present application. Figure 1 As shown, the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100, a motor 200 and a controller 300 can be set inside the vehicle 1000. The controller 300 is used to control the battery device 100 to power the motor 200. For example, the battery device 100 can be set at the bottom or front or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can be used as an operating power source for the vehicle 1000 and for the circuit system of the vehicle 1000, for example, for the working power requirements of the vehicle 1000 during startup, navigation and operation. In another embodiment of the present application, the battery device 100 can not only serve as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle 1000.

[0060] Figure 2 Schematic diagram of the structure of the battery device according to the embodiment of the present application. Figure 2 As shown, the battery device 100 of the embodiment of the present application may include multiple battery cells 20 to meet different power requirements. Figure 2 As shown, the battery device 100 according to the embodiment of the present application may further include a box body 10 .

[0061] The housing 10 may include two parts, referred to herein as a first housing portion 101 and a second housing portion 102, which are snap-fitted together. The shapes of the first housing portion 101 and the second housing portion 102 may be determined based on the shapes of the components housed therein, for example, based on the shape of the plurality of battery cells 20 housed therein. At least one of the first housing portion 101 and the second housing portion 102 may have an opening. For example, the first housing portion 101 and the second housing portion 102 may both be hollow rectangular parallelepipeds, each with one open face. The opening of the first housing portion 101 and the opening of the second housing portion 102 are disposed opposite each other, and the first housing portion 101 and the second housing portion 102 snap-fit ​​together to form the housing 10 having a closed chamber, which can be used to accommodate the plurality of battery cells 20. The plurality of battery cells 20 are connected in parallel, in series, or in a mixed combination and then placed within the housing 10 formed by the snap-fitting of the first housing portion 101 and the second housing portion 102.

[0062] For another example, only one of the first and second housing portions 101, 102 may be a hollow rectangular parallelepiped with an opening, while the other may be plate-shaped to cover the opening. For example, if the second housing portion 102 is a hollow rectangular parallelepiped with a single opening, and the first housing portion 101 is plate-shaped, the first housing portion 101 covers the opening of the second housing portion 102 to form the housing 10 with a closed chamber, which can be used to accommodate multiple battery cells 20.

[0063] Figure 3 This is a structural diagram of a battery cell according to an embodiment of the present application. Figure 4 This is an exploded view of a battery cell according to an embodiment of the present application. Figure 3 and Figure 4 As shown, the battery cell 20 of the embodiment of the present application may include a housing 21 , an end cover 22 , an electrode terminal 23 , a pressure relief mechanism 24 and an electrode assembly 25 .

[0064] The housing 21 is a hollow structure with an opening 211. The electrode assembly 25 is accommodated in the housing 21. The shape of the housing 21 can be determined according to the specific shape of the electrode assembly 25. For example, if the electrode assembly 25 is a rectangular parallelepiped structure, the housing 21 can also be a rectangular parallelepiped structure. Figure 3 and Figure 4 The case where the housing 21 and the electrode assembly 25 are square is exemplarily shown.

[0065] The shell 21 may be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not limited in the embodiment of the present application.

[0066] The end cap 22 is used to seal the opening 211 to form a sealed installation space for accommodating the electrode assembly 25. The installation space is also used to accommodate electrolyte, such as electrolyte solution. The end cap 22 is mounted with an electrode terminal 23 for connecting to the electrode assembly 25. Specifically, the electrode terminal 23 is connected to the tab 251 of the electrode assembly 25.

[0067] The end cap 22 is also provided with a pressure relief mechanism 24 . When the internal pressure of the battery cell 20 rises abnormally, the pressure relief mechanism 24 can be activated in time to release the excessive pressure inside the battery cell 20 , thereby reducing the possibility of dangerous situations such as explosion of the battery cell 20 .

[0068] It should be understood that the shape of the battery cell 20 of the embodiment of the present application can be flexibly set according to actual applications, that is, the shell 21 of the battery cell 20 can be any polyhedral structure, for example, it can be set to a rectangular parallelepiped or a cylinder.

[0069] Figure 5 This is a structural diagram of the box body of an embodiment of the present application. Figure 6 This is a partial top view of the box body of the embodiment of the present application. Figure 7 This is a partial cross-sectional view of the box body of the embodiment of the present application. Figures 5 to 7 As shown, the battery device 100 includes a box body 10, a high-voltage electrical component 30 and a battery cell 20. The box body 10 includes a frame 11. The frame 11 includes a first beam 110 and a second beam arranged opposite to each other. The first beam 110 includes a first wall 12, a second wall 111 and a support structure 13. The first wall 12 and the second wall 111 are arranged opposite to each other along a first direction. The first wall 12 is close to the second beam relative to the second wall 111. The support structure 13 connects the first wall 12 and the second wall 111. The first wall 12, the second wall 111 and the support structure 13 form a first accommodating space 141. The first wall 12 and the second beam form a second accommodating space 142. The support structure 13 has a heat exchange channel 131 extending along the second direction. The high-voltage electrical component 30 is accommodated in the first accommodating space 141. The battery cell 20 is accommodated in the second accommodating space 142 and is electrically connected to the high-voltage electrical component 30. The first direction is perpendicular to the thickness direction of the box body 10, and the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body 10.

[0070] The box 10 serves as the supporting structure of the battery device 100 and is mainly composed of a frame 11. The frame 11 is formed into a receiving space by integral molding or splicing, providing a mounting base and a protective shell for internal components.

[0071] In some embodiments, the frame 11 has a first beam 110 and a second beam arranged opposite to each other along a first direction, which together constitute a support frame of the frame 11 , and the frame forms an accommodating space.

[0072] In some embodiments, the first beam 110 and the second beam may be parallel and spaced apart to form a square frame 11 .

[0073] For ease of description, the embodiment of the present application defines three reference directions based on the box body 10. The direction perpendicular to the top or bottom of the box body 10 is the Z direction, that is, the thickness direction of the box body 10, that is, the third direction, wherein the top refers to the top cover of the box body 10, that is, the uppermost plate surface of the box body 10 when the battery device 100 is in use; the bottom refers to the bottom plate of the box body 10, that is, the lowermost plate surface of the box body 10 when the battery device 100 is in use; the direction perpendicular to the extension direction of the first beam 110 of the box body 10 is the X direction, that is, the first direction; the direction perpendicular to the X direction and perpendicular to the Z direction is the Y direction, that is, the second direction, wherein the X direction, the Y direction and the Z direction are perpendicular to each other.

[0074] The first beam 110 includes a first wall 12, a second wall 111, and a support structure 13. The support structure 13, the first wall 12, and the second wall 111 are spatially arranged to enclose a first accommodating space 141. The first wall 12 and the second wall 111 are arranged parallel to each other along a first direction, forming the longitudinal boundaries of the first accommodating space 141. The support structure 13 is connected to the bottoms of the first wall 12 and the second wall 111, forming the bottom bearing surface of the first accommodating space 141. Together, the three form a cavity space. Specifically, the first beam 110 includes a groove for accommodating the high-voltage electrical components 30. This space serves as the mounting area for the high-voltage electrical components 30, physically separating the high-voltage components from the second accommodating space 142 where the battery cells 20 are located, thereby reducing electromagnetic interference and safety risks.

[0075] In some embodiments, the support structure 13 can serve as a load-bearing component for the high-voltage electrical components 30. Its structural form can be designed based on the size, weight, and installation requirements of the high-voltage electrical components 30. The connection method between the support structure 13, the first wall 12, and the second wall 111 can be selected based on the material and strength requirements of the box 10, such as welding, bolting, or integral molding, to ensure that it does not loosen or deform under long-term vibration and impact conditions.

[0076] In some embodiments, the high-voltage electrical component 30 can be fixed to the first wall 12 and the second wall 111, that is, the first wall 12 and the second wall 111 serve as the supporting structure of the high-voltage electrical component 30 and are fixedly connected by welding, bolt locking, etc.

[0077] The first wall 12 is located between the second wall 111 and the second beam, and the three remain parallel. The first wall 12 divides the storage space formed by the frame 11 into a first storage space 141 and a second storage space 142. Specifically, the space between the first wall 12, the second wall 111, and the support structure 13 forms the first storage space 141, and the space between the second wall 111 and the second beam forms the second storage space 142.

[0078] High-voltage electrical components 30, such as high-voltage relays, fuses, a high-voltage control module of a battery management system, and connectors, are collectively accommodated in the first accommodation space 141. Electrical components may include high-voltage contactors, fuses, relays, and other electrical components related to high-voltage power transmission and control.

[0079] In some embodiments, the box body 10 may further include a cover plate, which covers the hollow structure, making the hollow structure a closed structure.

[0080] The first accommodation space 141 physically separates the high-voltage components from other areas, reducing the safety risks of high-voltage leakage and arc discharge to surrounding components. The first beam 110 not only supports the box 10 but also accommodates the high-voltage electrical components 30, achieving an integrated integration of structural and protective functions.

[0081] In some embodiments, the first accommodating space 141 formed by the first beam 110 can also serve as a shell of the high-voltage box to accommodate the high-voltage electrical components 30 , that is, the high-voltage electrical components 30 do not need an external shell and use the first accommodating space 141 of the first beam 110 .

[0082] The first wall 12 and the second wall 111 are spaced apart and parallel to each other along a first direction. Their opposing inner surfaces form the primary protective boundary for the high-voltage electrical component 30, replacing the traditional independent housing structure of the high-voltage electrical component 30. Structurally, the cross-section of the first beam 110 can be designed to have a groove or a closed profile with a certain depth, depending on the protection requirements. Its inner surface can be polished or coated to improve its flatness and insulation performance, ensuring compatibility with the high-voltage electrical component 30.

[0083] As a housing, the first wall 12 and the second wall 111 provide multi-dimensional protection for the high-voltage electrical components 30. On the one hand, their rigid structure resists external mechanical loads such as impact and vibration, preventing deformation or displacement of the high-voltage electrical components 30 due to external forces. On the other hand, the enclosed space formed by the first beam 110 and the cover effectively blocks the intrusion of external contaminants such as dust and moisture, creating a stable working environment for the high-voltage electrical components 30. Furthermore, the first beam 110 can be constructed of a composite material with insulating properties or a metal material with an insulating surface treatment, directly forming an electrical isolation barrier between the high-voltage electrical components 30 and the other metal structures of the housing 10, reducing the risk of leakage and enhancing device safety.

[0084] In some embodiments, the support structure 13 includes a heat exchange channel 131 therein. The heat exchange channel 131 extends along the second direction. The support structure 13 and the first wall 12 also extend along the second direction. That is, the heat exchange channel 131, the support structure 13, and the first wall 12 extend in the same direction. The heat exchange channel 131 may penetrate the support structure 13. The battery cell 20 or a battery cell assembly composed of multiple battery cells 20 is accommodated in the second accommodation space 142. The second accommodation space 142 is designed according to the size and arrangement requirements of the battery cell 20. The second beam and the first wall 12 of the first beam 110 jointly provide lateral support for the battery cell 20, reducing the displacement or deformation of the battery cell 20 under vibration and impact conditions. The frame structure formed by the frame 11 and the beam body can also buffer external collision forces, reducing the risk of damage to the battery cell 20.

[0085] In some embodiments, the spatial layout of the second accommodating space 142 can reserve heat dissipation channels, such as air flow channels or liquid cooling pipeline spaces, to facilitate the integration of a thermal management system to achieve uniform heat dissipation or heating of the battery cell 20 and maintain its optimal operating temperature range.

[0086] In some embodiments, the high-voltage electrical component 30 is electrically connected to the battery cell 20 via an electrical connector. The electrical connector may span the first wall 12 and may be a bus module, a high-voltage connector, or a high-voltage cable.

[0087] In the embodiment of the present application, a first accommodating space 141 formed by the first wall 12, the second wall 111, and the support structure 13, and a second accommodating space 142 formed by the first wall 12 and the second beam are provided on the first beam 110 of the frame 11 to accommodate the high-voltage electrical components 30 and the battery cells 20, respectively, thereby achieving physical separation and functional zoning between the two. This utilizes the spatial potential of the box 10, and the first accommodating space 141 formed by the first beam 110 accommodates the high-voltage electrical components 30, thereby improving the space utilization of the box 10 and making the overall structure of the battery device 100 more compact. By reusing the structure within the support structure 13 as the heat exchange channel 131, no additional heat dissipation or heating device is required, simplifying the structure while avoiding performance degradation and failure of components due to overheating, extending the service life of the high-voltage electrical components 30, and ensuring stable operation of the high-voltage system of the battery device 100.

[0088] In the embodiment of the present application, the high-voltage electrical component 30 is installed on the surface of the support structure 13 facing the first accommodation space 141 .

[0089] In some embodiments, the surface of the support structure 13 facing the first accommodating space 141 is the mounting surface of the high-voltage electrical component 30. Positioning features can be designed according to the bottom contour of the electrical component, such as limit slots, raised positioning columns or anti-slip patterns, to achieve the positioning of the high-voltage electrical component 30 and avoid displacement during installation.

[0090] In some embodiments, the bottom of the high-voltage electrical component 30 is directly placed on or attached to the surface of the support structure 13, and can be strengthened and fixed with a small number of fasteners.

[0091] The surface of the support structure 13 may be pre-machined with suitable mounting holes or slots, and the high-voltage electrical component 30 may be fastened to the support structure 13 by bolting, snap-fitting, or gluing. For example, if bolting is used, threaded holes may be reserved on the surface of the support structure 13. After aligning the mounting ears of the high-voltage electrical component 30 with the threaded holes, the components are tightened with bolts to prevent displacement of the high-voltage electrical component 30 during device operation or under vibration.

[0092] As a component of the first beam 110 , the support structure 13 itself has high structural strength, can provide stable support for the high-voltage electrical components 30 , and reduce the problem of loose connections caused by vibration.

[0093] In the embodiment of the present application, the support structure 13, as a component forming the first accommodating space 141, directly provides support for the high-voltage electrical components 30 installed on its surface facing the first accommodating space 141, and the high-voltage electrical components 30 can be fixed without additional brackets. It not only adapts to the first accommodating space 141 to save space and improve the space utilization of the box 10, but also enhances the stability and safety of the installation of the high-voltage electrical components 30 with the support of the support structure 13.

[0094] In the embodiment of the present application, the first wall 12 is provided on the surface of the heat exchange channel 131 , and the support structure 13 and the first wall 12 extend along the second direction.

[0095] The extension direction of the heat exchange channel 131 is the same as that of the first wall 12, so that the heat exchange channel 131 and the first wall 12 can form corresponding coverage within the entire length range, so that each section of the first wall 12 can fully contact the heat exchange channel 131, thereby improving the overall heat exchange efficiency and uniformity of temperature control.

[0096] First wall 12 is disposed on the surface of heat exchange channel 131 and can be connected by lamination, welding, or integral molding, so that heat exchange channel 131 can exchange heat with first wall 12 through heat conduction. Specifically, when the heat exchange medium flows in the channel, it exchanges heat with the channel wall through convection heat transfer, and then transfers energy to first wall 12 through heat conduction, thereby regulating the temperature of first wall 12.

[0097] The first wall 12 is in direct contact with or in close proximity to the high-voltage electrical components 30, forming a heat conduction path. When the high-voltage electrical components 30 operate, they generate heat due to resistance losses, electromagnetic induction, and other factors. Heat accumulation can lead to component performance degradation or even failure. The heat exchange channels 131 within the support structure 13 indirectly dissipate heat or maintain heat within the high-voltage electrical components 30 by regulating the temperature of the first wall 12.

[0098] In some embodiments, after the high-voltage electrical component 30 generates heat, the heat is transferred to the first wall 12 through heat conduction. When the heat exchange medium flows through the heat exchange channel 131, it quickly absorbs the heat of the first wall 12 and takes it away, so that the first wall 12 is maintained at a low temperature state, and the temperature of the high-voltage electrical component 30 is controlled to remain within an appropriate range.

[0099] In some embodiments, the heat exchange channel 131 further includes a liquid inlet 1312 and a liquid outlet 1313 . The heat exchange medium enters the heat exchange channel 131 through the liquid inlet 1312 , flows through the heat exchange channel 131 to exchange heat with the first wall 12 , and then flows out through the liquid outlet 1313 .

[0100] In some embodiments, the support structure 13 may further include a heat exchange channel 131 for directly adjusting the temperature of the high-voltage electrical components 30 , that is, while directly exchanging heat for the high-voltage electrical components 30 , the heat exchange of the high-voltage electrical components 30 is assisted by exchanging heat on the first wall 12 .

[0101] In some embodiments, the support structure 13 may further include a heat exchange channel 131 of the second wall 111 , that is, heat exchange of the high-voltage electrical component 30 is assisted by heat exchange of the second wall 111 .

[0102] In the embodiment of the present application, the first wall 12 cooperates with the heat exchange channel 131 in the support structure 13 to form a heat conduction path through direct contact or close proximity. The heat generated by the high-voltage electrical components 30 can be transferred to the heat exchange channel 131 through the first wall 12 to achieve heat dissipation. The first wall 12 assists in heat dissipation of the high-voltage electrical components 30, thereby improving the heat dissipation effect of the high-voltage electrical components 30.

[0103] Figure 8 This is another partial cross-sectional view of the box body of the embodiment of the present application. Figure 8 As shown, the first wall 12 includes a main body 121 and a protrusion 122. The main body 121 and the second wall 111 are arranged opposite to each other along a first direction. The protrusion 122 extends toward the first accommodating space 141. The projection of the protrusion 122 along a third direction toward the heat exchange channel 131 falls on the surface of the heat exchange channel 131; wherein the third direction is the thickness direction of the box body 10.

[0104] The first wall 12 includes a main body 121 and a protruding portion 122. The main body 121 and the second wall 111 are disposed opposite to each other along a first direction, and the main boundary of the first accommodation space 141 is formed therebetween, providing installation space for the high-voltage electrical component 30.

[0105] In some embodiments, the protrusion 122 extends from the main body 121 toward the interior of the first accommodating space 141 , that is, protrudes toward the area where the high-voltage electrical component 30 is located.

[0106] In terms of spatial projection, the projection along the third direction toward the heat exchange channel 131 falls within the surface range of the heat exchange channel 131 , that is, the protrusion 122 can fully contact the heat exchange channel 131 for sufficient heat exchange.

[0107] The protrusion 122 can increase the contact area between the first wall 12 and the heat exchange channel 131 , thereby enhancing heat exchange efficiency, allowing heat to be directly transferred to the main body 121 through the protrusion 122 , thereby exchanging heat with the high-voltage electrical component 30 .

[0108] In an embodiment of the present application, the main body 121 of the first wall 12 and the second wall 111 are arranged opposite to each other along the first direction, the protrusion 122 extends toward the first accommodating space 141, and the projection of the protrusion 122 along the third direction toward the heat exchange channel 131 falls into the surface of the heat exchange channel 131, thereby increasing the contact area between the first wall 12 and the heat exchange channel 131 and strengthening the heat conduction path between the two, so that the heat transferred from the high-voltage electrical component 30 to the first wall 12 can be conducted to the heat exchange channel 131 through the protrusion 122, thereby improving the heat exchange efficiency and the uniformity of temperature control.

[0109] Continue to refer to Figure 8 The support structure 13 also includes a mounting plate 132 extending along the second direction, the mounting plate 132 connects the first wall 12 and the second wall 111, and an isolation cavity is formed between the mounting plate 132 and the heat exchange channel 131, and the high-voltage electrical component 30 is arranged on the side of the mounting plate 132 away from the isolation cavity.

[0110] In some embodiments, one end of the mounting plate 132 is connected to the protrusion 122 of the first wall 12 , and the other end is connected to the second wall 111 , forming a continuous support for the second wall 111 , the protrusion 122 , the mounting plate 132 and the main body 121 .

[0111] In some embodiments, when the first wall 12 only includes the main body 121 , one end of the mounting plate 132 is connected to the first wall 12 , and the other end is connected to the second wall 111 .

[0112] The mounting plate 132 and the heat exchange channel 131 are spaced apart to form an isolation cavity, that is, the isolation cavity isolates the heat exchange channel 131 from the high-voltage electrical component 30 .

[0113] The main body of the mounting plate 132 extends along the second direction, and the side of the mounting plate 132 away from the isolation cavity is connected to the high-voltage electrical component 30. The mounting plate 132 and the bottom or side of the high-voltage electrical component 30 are physically fixed by mechanical connection or adhesive bonding.

[0114] In some embodiments, the shape of the mounting plate 132 can be designed to be adapted to the shape of the high-voltage electrical component 30 , such as a flat plate, an L-shaped structure, or a structure with positioning protrusions.

[0115] In some embodiments, the shape of the mounting plate 132 may be the same as that of the first accommodation space 141 to isolate the high-voltage electrical component 30 from the rest of the space.

[0116] In some embodiments, the heat exchange channel 131 may be located below the mounting plate 132 , while dissipating heat from the high-voltage electrical components 30 through the mounting plate 132 .

[0117] The isolation cavity extends along the second direction, forming an internal passage. The isolation cavity is located between the high-voltage electrical components 30 and potential leakage sources, such as the electrolyte in the battery cells 20 and the heat exchange passages 131, forming a physical barrier. Even if leakage occurs, the liquid will first enter the isolation cavity rather than directly contact the high-voltage electrical components 30.

[0118] In the embodiment of the present application, the isolation cavity formed by the mounting plate 132 of the support structure 13 and the heat exchange channel 131 separates the high-voltage electrical component 30 from the leakage source. The leaked liquid will first enter the isolation cavity to prevent the liquid from contacting the high-voltage electrical component 30, which can block the leakage from invading and improve the anti-leakage protection level of the high-voltage electrical component 30, so that its insulation performance and working stability are not affected by the leakage.

[0119] In the embodiment of the present application, the connection method between the high-voltage electrical component 30 and the mounting plate 132 includes: locking or adhesive.

[0120] The locking connection is a connection method in which the high-voltage electrical component 30 is fixed to the mounting plate 132 by mechanical fasteners, such as bolts, screws, nuts, etc.

[0121] During implementation, it is necessary to select appropriate fastener types and specifications based on the structural characteristics of the high-voltage electrical component 30, the material of the mounting plate 132, and the force requirements.

[0122] In some embodiments, a mounting hole is preset on the shell or mounting ear of the high-voltage electrical component 30, and a threaded hole or through hole is processed at the preset position of the corresponding mounting plate 132, and a bolt / screw is passed through the mounting hole and tightened with the threaded hole, or fastened with a nut.

[0123] To improve connection stability, washers can be added between the fasteners and the contact surface to disperse pressure and prevent loosening. For applications in vibrating environments, anti-loosening bolts or thread anti-loosening glue can also be used to further enhance the vibration resistance of the lock.

[0124] The locking mechanism provides a stable fastening force, effectively withstanding the weight of the high-voltage electrical component 30, vibration, shock, and mechanical loads during operation, ensuring that the high-voltage electrical component 30 does not shift or fall out during long-term use. This facilitates subsequent maintenance, inspection, or component replacement. When the high-voltage electrical component 30 requires repair or replacement, it can be quickly disassembled and assembled by removing the fasteners, reducing maintenance costs. The fasteners are not limited by the material of the mounting plate 132 or the high-voltage electrical component 30, and can be flexibly adapted to high-voltage electrical components 30 of varying sizes and weights by adjusting the fastener specifications.

[0125] The adhesive connection is achieved by coating adhesive on the contact surface of the high-voltage electrical component 30 and the mounting plate 132 and utilizing the adhesive force of the cured adhesive to achieve a fixed connection between the two.

[0126] In some embodiments, the adhesive must meet the working environment requirements of the high-voltage electrical components 30, and preferably a structural adhesive that is resistant to high temperatures, vibrations, has excellent insulation properties and has a certain elasticity, such as epoxy resin adhesive, silicone rubber adhesive, etc.

[0127] After curing, the adhesive fills the tiny gaps between the contact surfaces, forming a sealed structure that blocks the intrusion of impurities such as moisture and dust. Most adhesives also possess excellent electrical insulation properties, enhancing the insulation between the high-voltage electrical components 30 and the mounting plate 132 and reducing the risk of electrical leakage. This eliminates the need for additional mechanical fasteners, reducing the weight and volume of connected components and making it particularly suitable for applications requiring lightweight design.

[0128] In the embodiments of this application, the high-voltage electrical component 30 and the mounting plate 132 are connected by means of a latch or adhesive. The latch connection provides high mechanical stability and convenient removability, making it suitable for heavy loads and complex load scenarios. The adhesive connection enhances insulation sealing, achieves vibration and noise reduction, and reduces weight, meeting the requirements of lightweight protection. Both methods meet the connection strength requirements under conditions such as long-term vibration and high and low temperatures, ensure stable insulation resistance, effectively prevent loosening and short-circuiting risks, and balance maintenance convenience with structural optimization, providing key guarantees for the safe and reliable operation of the battery device 100.

[0129] Figure 9 This is another partial cross-sectional view of the box body of the embodiment of the present application. Figure 9 As shown, a plurality of partitions 1311 extending along the second direction are provided inside the heat exchange channel 131 , and the plurality of partitions 1311 divide the heat exchange channel 131 into a plurality of flow channels. Each partition 1311 includes at least one connecting hole, and the connecting hole connects two adjacent flow channels.

[0130] The heat exchange channel 131 is internally provided with a plurality of partitions 1311 extending along the second direction. These partitions 1311 are connected to the inner wall of the heat exchange channel 131, for example, by welding or integral molding, thereby dividing the original single heat exchange channel 131 into multiple independent flow channels. The multiple flow channels can be arranged along the first direction or along the third direction.

[0131] The number of partitions 1311 can be flexibly set according to the heat exchange requirements. The material of the partitions 1311 is consistent with the main body of the heat exchange channel 131, and the thickness is designed to take into account both structural strength and heat conduction performance.

[0132] Each partition 1311 is provided with at least one connecting hole, which can be circular, elliptical or rectangular in shape, and the hole size is designed according to the flow distribution requirements of the flow channel. The distribution positions of the connecting holes on the partition 1311 can be staggered or located at the same position.

[0133] The medium between adjacent flow channels flows through the connecting holes. When the heat exchange medium enters the heat exchange channel 131, the medium can flow to the adjacent flow channels through the connecting holes, avoiding the influence of a single flow channel on the heat exchange efficiency. At the same time, the medium flow of each flow channel tends to be balanced.

[0134] The presence of the partition 1311 may cause differences in resistance along the flow channel. The connecting holes can balance the pressure of each flow channel through the communication of the medium, reduce local high or low pressure phenomena, and reduce the energy consumption of the heat exchange system.

[0135] In this embodiment, multiple baffles 1311 extending along the second direction within the heat exchange channel 131 separate the channel into multiple flow channels. The connecting holes in each baffle 1311 allow adjacent flow channels to communicate with each other. This subdivision increases the heat exchange contact area and enhances heat conduction. The connecting holes balance the flow rate and pressure of each flow channel, promote medium circulation, improve heat exchange efficiency and temperature control uniformity, and enhance the stability of the heat exchange system.

[0136] In the embodiment of the present application, the heat exchange medium in the heat exchange channel 131 is fluorinated liquid.

[0137] The battery device 100 is exposed to high voltage. If the heat exchange medium leaks and comes into contact with live components such as high-voltage electrical components 30, the conductive heat exchange medium could cause a short circuit or other serious safety hazard. Fluorinated fluid has excellent electrical insulation properties and an extremely high insulation resistance. This ensures effective heat exchange while providing reliable electrical isolation for the battery device 100. This reduces the risk of electrical failures caused by heat exchange medium leakage and improves the safety and reliability of the battery device 100.

[0138] The fluorinated liquid also exhibits thermal stability, maintaining its physical and chemical properties over a wide temperature range and maintaining stable heat exchange performance. Its high specific heat capacity means that the temperature change per unit mass of the fluorinated liquid is relatively small when absorbing or releasing the same amount of heat. This allows it to efficiently absorb heat from the first wall 12, thereby providing continuous and stable cooling for the high-voltage electrical components 30.

[0139] In the embodiment of the present application, by selecting fluorinated liquid as the heat exchange medium, its electrical insulation can reduce the risk of leakage and short circuit, thereby improving the safety of the battery device 100; its thermal stability and high specific heat capacity can achieve continuous heat exchange, and can stably control the temperature of the first wall 12, thereby keeping the temperature of the high-voltage electrical component 30 within a reasonable range.

[0140] In an embodiment of the present application, the first wall 12 includes a first side wall and a second side wall arranged opposite to each other along a first direction, and the first side wall is away from the first accommodating space 141 relative to the second side wall; the battery device 100 also includes a plurality of battery cell assemblies arranged along a second direction, and the battery cell assemblies include a plurality of battery cells 20 arranged along the first direction, and at least one end of the plurality of battery cell assemblies along the first direction is against the first side wall; wherein the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body 10.

[0141] The first wall 12 extends along the second direction and includes a first side wall and a second side wall disposed opposite to each other along the first direction. The first side wall is farther away from the first receiving space 141 than the second side wall, that is, the first side wall faces the battery cell assembly, while the second side wall faces the first receiving space 141.

[0142] The material of the first wall 12 can be selected from a material having both strength and a certain elastic deformation ability, so that it does not deform when subjected to an expansion load and absorbs part of the expansion energy through its own elastic deformation.

[0143] The battery device 100 includes multiple battery cell assemblies arranged along the second direction. Each battery cell assembly is composed of multiple battery cells 20 arranged sequentially along the first direction. During the charge and discharge cycle, the battery cells 20 generate expansion forces due to the volume changes of the electrode materials. The combined expansion forces of multiple battery cells 20 can exert significant lateral thrust on the surrounding structure. Without effective restraint, long-term expansion and contraction cycles can cause displacement of the battery cell assembly, increase the spacing between battery cells, and even lead to risks such as structural loosening and electrolyte leakage.

[0144] At least one end of the battery cell assemblies along the first direction abuts against the first side wall, that is, the end of the battery cell assembly is in contact with the first side wall, so that the first wall 12 becomes an expansion beam that directly bears the expansion force of the battery cell 20 in the first direction.

[0145] The first sidewall provides rigid support for the ends of the battery cell assembly through surface contact, transferring the expansion force of the multiple battery cells 20 to the first wall 12. The overall structural strength of the first wall 12 can resist lateral loads along the first direction, controlling the maximum expansion displacement of the battery cell assembly within a relatively small range, thereby reducing the possibility of structural damage to the battery cells 20 due to excessive expansion.

[0146] In some embodiments, the first wall 12 evenly absorbs the expansion force through the first sidewall and distributes the load throughout the box 10 through a rigid connection with the frame 11, resulting in a more uniform stress distribution. While the first wall 12 acts as an expansion beam to constrain the battery cells 20, its second sidewall still provides protection and boundary support for the first accommodating space 141, achieving both the functional reuse of constraining the battery cells 20 and isolating and protecting the high-voltage electrical components 30. This eliminates the need for separate independent expansion restraint beams or a high-voltage box for the high-voltage electrical components 30, simplifying the internal structure of the box 10 and improving space utilization.

[0147] In the embodiment of the present application, the first wall 12 functions as an expansion beam, with its first sidewall abutting against the battery cell assembly, constraining the expansion displacement of the battery cell 20 along a first direction, keeping the expansion displacement within a relatively low range and preventing structural damage to the battery cell 20. The first wall 12 also serves to both constrain the battery cell 20 and isolate and protect the high-voltage area, eliminating the need for additional expansion beams or restraint beams. This improves space utilization and enables the battery assembly 100 to maintain structural stability.

[0148] Figure 10 This is a partial structural diagram of the box body of the embodiment of the present application. Figure 10 As shown, the first wall 12 , the second wall 111 and the support structure 13 are integrally formed.

[0149] The support structure 13, connected to the second wall 111, forms an integral frame together with the first wall 12. The integral molding process can be achieved by injection molding or other methods, where the first wall 12, the second wall 111, and the support structure 13 are directly formed into a single unit during the molding process, avoiding the traditional connection steps between separate components and reducing the number of parts.

[0150] In some embodiments, if the high-voltage electrical component 30 and the mounting plate 132 are connected by locking, the mounting plate 132 will reserve mounting holes during the integral molding process so that the connector can connect the high-voltage electrical component 30 and the mounting plate 132 through the mounting holes.

[0151] In the embodiment of the present application, the support structure 13 connects the first wall 12, and the three are integrally formed. This reduces the weak points of the separate connections and improves the overall strength and deformation resistance of the box 10. The integrally formed structure reduces the number of parts and production steps, which in turn reduces the procurement cost of parts and the labor and material costs during the processing, helping to improve the market competitiveness of the product. The integrally formed structure avoids gaps between the connection parts, improves the sealing between the first wall 12, the second wall 111, and the support structure 13, reduces the impact of internal leakage of the battery device 100 on the high-voltage electrical components 30, and improves the safety and reliability of the battery device 100.

[0152] In the embodiment of the present application, the frame 11 includes two third beams arranged opposite to each other along the first direction, and the third beams are connected to the first wall 12 , the second wall 111 and the support structure 13 .

[0153] The frame 11 includes two third beams disposed opposite to each other along the first direction. The two beams are parallel and spaced apart from each other and are perpendicular to the second wall 111 and the third beams, forming a rectangular frame 11 .

[0154] The third beam serves as a longitudinal supporting component of the box body 10 . The length of the third beam matches the second dimension of the box body 10 . The material of the third beam can be a metal material consistent with the first wall 12 and the second wall 111 .

[0155] In some embodiments, the first wall 12 , the second wall 111 , and both ends of the support structure 13 may be fixedly connected to the two third beams by gluing, connecting pieces, or the like.

[0156] In some embodiments, both ends of the first wall 12 , the second wall 111 and the supporting structure 13 are fixedly connected to the two third beams by welding, and the welding process can be selected according to the material properties.

[0157] The welding connection can eliminate the assembly gap and stress concentration problems of the traditional bolt connection, so that the first wall 12, the second wall 111, the support structure 13 and the third beam form a gapless whole, and the torsional rigidity and bending strength of the box body 10 are improved.

[0158] In some embodiments, the continuous weld can block the airflow or liquid passage between the interior of the box 10 and the external environment. The sealing treatment of the weld area, such as applying sealant, can improve the protective performance of the box 10.

[0159] In some embodiments, the welding connection does not require reserved bolt holes and installation space, so that the components are arranged closely and the invalid space occupied by the box body 10 is reduced.

[0160] In this embodiment, the two third beams of the frame 11 are arranged opposite each other along the first direction and connected to the first wall 12, the second wall 111, and the support structure 13. This eliminates assembly gaps and forms an integrated frame with all components. This improves the overall torsional rigidity and bending strength of the box 10, enhancing its resistance to vibration and impact. It also blocks the internal and external airflow and liquid channels, improving the protective sealing performance. The welded connection eliminates the need for connectors, saving space and reducing the weight of the battery device 100.

[0161] According to some embodiments of the present application, the present application also provides a box body 10, which includes a frame 11, the frame 11 includes a first beam 110 and a second beam arranged opposite to each other, the first beam 110 includes a first wall 12, a second wall 111 and a support structure 13, the first wall 12 and the second wall 111 are arranged opposite to each other along a first direction, the first wall 12 is close to the second beam relative to the second wall 111, the support structure 13 connects the first wall 12 and the second wall 111, the first wall 12, the second wall 111 and the support structure 13 form a first accommodating space 141, the first wall 12 and the second beam form a second accommodating space 142; the first accommodating space 141 is used to accommodate high-voltage electrical components 30, and the second accommodating space 142 is used to accommodate battery cells 20.

[0162] According to some embodiments of the present application, the present application further provides an electric device, which may include a battery device 100, and the battery device 100 is used to provide electrical energy.

[0163] Among them, the battery device 100 includes a box body 10, a high-voltage electrical component 30 and a battery cell 20, the box body includes a frame 11, the frame 11 includes a first beam 110 and a second beam arranged opposite to each other, the first beam 110 includes a first wall 12, a second wall 111 and a support structure 13, the first wall 12 and the second wall 111 are arranged opposite to each other along a first direction, the support structure 13 connects the first wall 12 and the second wall 111, the first wall 12, the second wall 111 and the support structure 13 form a first accommodating space 141, the first wall 12 and the second beam form a second accommodating space 142, and the support structure 13 has a heat exchange channel 131 extending along the second direction; the high-voltage electrical component 30 is accommodated in the first accommodating space 141; the battery cell 20 is accommodated in the second accommodating space 142 and is electrically connected to the high-voltage electrical component 30; wherein the first direction is perpendicular to the thickness direction of the box body 10, and the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body 10.

[0164] It should be understood that the battery device 100 may also include the battery device 100 in any of the above embodiments.

[0165] The power-consuming device may be any of the aforementioned devices or systems using the battery device 100 .

[0166] According to some embodiments of the present application, see Figures 5 to 10The present application provides a battery device 100, which includes a box body 10, a high-voltage electrical component 30 and a battery cell 20. The box body 10 includes a frame 11, the frame 11 includes a first beam 110 and a second beam arranged opposite to each other, the first beam 110 includes a first wall 12, a second wall 111 and a support structure 13, the first wall 12 and the second wall 111 are arranged opposite to each other along a first direction, the first wall 12 is close to the second beam relative to the second wall 111, the support structure 13 connects the first wall 12 and the second wall 111, the first wall 12, the second wall 111 and the support structure 13 form a first accommodating space 141, the first wall 12 and the second beam form a second accommodating space 142; the high-voltage electrical component 30 is accommodated in the first accommodating space 141; the battery cell 20 is accommodated in the second accommodating space 142 and is electrically connected to the high-voltage electrical component 30; wherein the first direction is perpendicular to the thickness direction of the box body 10.

[0167] The high-voltage electrical components 30 are mounted on the surface of the support structure 13 facing the first accommodation space 141. The support structure 13 has a heat exchange channel 131 extending in the second direction, and the first wall 12 is disposed on the surface of the heat exchange channel 131. The support structure 13 and the first wall 12 extend in the second direction, which is perpendicular to the first direction and to the thickness of the housing 10. The first wall 12 and the second wall 111 are integrally formed with the support structure 13. The frame 11 includes two third beams disposed opposite each other in the first direction, which are connected to the first wall 12, the second wall 111, and the support structure 13.

[0168] The first wall 12 includes a main body 121 and a protruding portion 122. The main body 121 and the second wall 111 are arranged opposite to each other along a first direction. The protruding portion 122 extends toward the first accommodating space 141. The projection of the protruding portion 122 along a third direction toward the heat exchange channel 131 falls on the surface of the heat exchange channel 131; wherein the third direction is the thickness direction of the box body 10.

[0169] The support structure 13 also includes a mounting plate 132 extending along the second direction. The mounting plate 132 connects the first wall 12 and the second wall 111. The mounting plate 132 and the heat exchange channel 131 are spaced apart to form an isolation cavity. The high-voltage electrical component 30 is arranged on the side of the mounting plate 132 away from the isolation cavity.

[0170] The heat exchange channel 131 is provided with a plurality of partitions 1311 extending along the second direction. The partitions 1311 divide the heat exchange channel 131 into a plurality of flow channels. Each partition 1311 includes at least one connecting hole, which connects two adjacent flow channels. The heat exchange medium in the heat exchange channel 131 is a fluorinated liquid.

[0171] The first wall 12 includes a first side wall and a second side wall arranged opposite to each other along the first direction, and the first side wall is away from the first accommodating space 141 relative to the second side wall; the battery device 100 also includes a plurality of battery cell assemblies arranged along the second direction, and the battery cell assemblies include a plurality of battery cells 20 arranged along the first direction, and at least one end of the plurality of battery cell assemblies along the first direction is against the first side wall.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A box body (10), the box body (10) comprising a frame (11), the frame (11) comprising a first beam (110) and a second beam arranged opposite to each other, the first beam (110) comprising a first wall (12), a second wall (111) and a supporting structure (13), the first wall (12) and the second wall (111) being arranged opposite to each other along a first direction, the first wall (12) being closer to the second beam relative to the second wall (111), the supporting structure (13) connecting the first wall (12) and the second wall (111), the first wall (12), the second wall (111) and the supporting structure (13) forming a first accommodating space (141), the first wall (12) and the second beam forming a second accommodating space (142), the supporting structure (13) having a heat exchange channel (131) extending along the second direction; a high-voltage electrical component (30), the high-voltage electrical component (30) being accommodated in the first accommodation space (141); a battery cell (20), the battery cell (20) being accommodated in the second accommodation space (142) and electrically connected to the high-voltage electrical component (30); The first direction is perpendicular to the thickness direction of the box body (10), and the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body (10).

2. The battery device according to claim 1, wherein: The high-voltage electrical component (30) is mounted on a surface of the support structure (13) facing the first accommodating space (141).

3. The battery device according to claim 1, wherein: The first wall (12) is arranged on the surface of the heat exchange channel (131), and the support structure (13) and the first wall (12) extend along the second direction.

4. The battery device according to claim 3, characterized in that The first wall (12) comprises a main body (121) and a protruding portion (122), the main body (121) and the second wall (111) are arranged opposite to each other along the first direction, the protruding portion (122) protrudes toward the first accommodating space (141), and a projection of the protruding portion (122) toward the heat exchange channel (131) along the third direction falls on the surface of the heat exchange channel (131); Wherein, the third direction is the thickness direction of the box body (10).

5. The battery device according to claim 4, characterized in that The support structure (13) further comprises a mounting plate (132) extending along the second direction, the mounting plate (132) connecting the first wall (12) and the second wall (111), an isolation cavity being formed between the mounting plate (132) and the heat exchange channel (131), and the high-voltage electrical component (30) being arranged on a side of the mounting plate (132) away from the isolation cavity.

6. The battery device according to any one of claims 3 to 5, characterized in that A plurality of partitions (1311) extending along the second direction are provided inside the heat exchange channel (131), and the plurality of partitions (1311) divide the heat exchange channel (131) into a plurality of flow channels, and each of the partitions (1311) includes at least one connecting hole, and the connecting hole connects two adjacent flow channels.

7. The battery device according to any one of claims 3 to 5, characterized in that The heat exchange medium in the heat exchange channel (131) is fluorinated liquid.

8. The battery device according to any one of claims 1 to 5, characterized in that The first wall (12) comprises a first side wall and a second side wall arranged opposite to each other along the first direction, the first side wall being away from the first accommodation space (141) relative to the second side wall; The battery device further comprises a plurality of battery cell assemblies arranged along a second direction, the battery cell assemblies comprising a plurality of battery cells (20) arranged along the first direction, at least one end of the plurality of battery cell assemblies along the first direction abutting against the first side wall; The second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body (10).

9. The battery device according to any one of claims 1 to 5, characterized in that The first wall (12), the second wall (111) and the supporting structure (13) are integrally formed.

10. The battery device according to any one of claims 1 to 5, characterized in that The frame (11) comprises two third beams arranged opposite to each other along the first direction, and the third beams are connected to the first wall (12), the second wall (111) and the supporting structure (13).

11. An electrical device, characterized in that: The invention comprises a battery device according to any one of claims 1 to 10, wherein the battery device is used to provide electrical energy.

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