Battery device and electric appliance

Abstract

The embodiment of the application discloses a battery device and a power utilization equipment, and relates to the field of batteries. The battery device comprises a box body, a high-voltage electrical component and a battery cell. The 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 along a first direction, and a support structure. The first wall is closer to the second beam relative to the second wall. The support structure is connected to the first wall and the second wall. The first wall, the second wall and the support structure form a first containing space. The first wall and the second beam form a second containing space. The support structure has a heat exchange channel extending along a second direction inside the support structure. The high-voltage electrical component is contained in the first containing space. The battery cell is contained in the second containing space. The battery device can integrate the high-voltage electrical component in the interior of the battery device, and improve the space utilization of the battery device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of batteries, and more particularly, to a battery device and an electric device. BACKGROUND

[0002] With the development of new energy technology, 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 of the battery device. SUMMARY

[0003] The embodiments of the present application provide a battery device and an electric device, which can integrate high-voltage electrical components inside the battery device to improve the space utilization of the battery device.

[0004] In a first aspect, the present application provides a battery device, comprising a box, a high-voltage electrical component, and a battery cell. The box comprises a frame, and the frame comprises a first beam and a second beam arranged opposite to each other. The first beam comprises 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 closer 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. The support structure has a heat exchange channel extending along a second direction inside the support structure. The high-voltage electrical component is accommodated in the first accommodating space. The battery cell is accommodated in the second accommodating space and electrically connected with the high-voltage electrical component. The first direction is perpendicular to the thickness direction of the box, and the second direction is perpendicular to the first direction and the thickness direction of the box.

[0005] In the technical solution of the embodiments of the present application, the first accommodating space formed by the first wall, the second wall, and the support structure on the first beam of the frame, and the second accommodating space formed by the first wall and the second beam, are arranged to accommodate the high-voltage electrical component and the battery cell, respectively, to realize the physical separation and functional division of the two. The space potential of the box is utilized to accommodate the high-voltage electrical component in the first accommodating space formed by the first beam, to improve the space utilization of the box and make the overall structure of the battery device more compact. The structure inside the support structure is reused as the heat exchange channel, without the need for additional cooling or heating devices, which simplifies the structure and avoids performance degradation and failure of components due to overheating, prolongs the service life of the high-voltage electrical component, and enables 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 the surface of the support structure facing the first accommodating space.

[0007] In the embodiments of the present application, the support structure is a component of the first accommodating space and directly supports the high-voltage electrical component installed on the surface of the support structure facing the first accommodating space. The support structure can fix the high-voltage electrical component without an additional support, which is suitable for the structure of the first accommodating space to save space and improve the space utilization of the box. In addition, the support structure can enhance the stability and safety of the installation of the high-voltage electrical component.

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

[0009] In the embodiments of the present application, the first wall forms a heat conduction path with the heat exchange channel in the support structure through direct contact or close proximity. The heat generated by the high-voltage electrical component can be transferred to the heat exchange channel through the first wall to achieve heat dissipation. The first wall can assist in dissipating heat from the high-voltage electrical component, thereby improving the heat dissipation effect of the high-voltage electrical component.

[0010] In some embodiments of the first aspect, the first wall includes a main body portion and a protruding portion. The main body portion is arranged opposite to the second wall along the first direction, and the protruding portion extends toward the first accommodating space. A projection of the protruding portion along a third direction toward the heat exchange channel falls on the surface of the heat exchange channel. The third direction is the thickness direction of the box.

[0011] In the embodiments of the present application, the main body portion of the first wall is arranged opposite to the second wall along the first direction, and the protruding portion extends toward the first accommodating space. The projection of the protruding portion along the third direction toward the heat exchange channel falls on the surface of the heat exchange channel. The contact area between the first wall and the heat exchange channel is increased, and the heat conduction path between them is strengthened. The heat transferred from the high-voltage electrical component to the first wall can be conducted to the heat exchange channel through the protruding portion, thereby improving the heat exchange efficiency and the uniformity of temperature regulation.

[0012] In some embodiments of the first aspect, the support structure further includes a mounting plate extending along the second direction. The mounting plate connects the first wall and the second wall. The mounting plate and the heat exchange channel are arranged in a spaced manner to form an isolation cavity. The high-voltage electrical component is arranged on the side of the mounting plate away from the isolation cavity.

[0013] In the embodiments 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 component from the liquid leakage source. The liquid leakage enters the isolation cavity first, avoiding the contact of the liquid with the high-voltage electrical component. The liquid leakage can be blocked, thereby improving the liquid leakage protection level of the high-voltage electrical component and ensuring the insulation performance and working stability of the high-voltage electrical component.

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

[0015] In the embodiments of the present application, the high-voltage electrical component and the mounting plate are connected by locking or adhesive. The locking connection can provide high mechanical stability and convenient disassembly, and is suitable for heavy load and complex stress scenarios. The adhesive connection can enhance insulation and sealing, achieve vibration and noise reduction, and is suitable for lightweight protection requirements. Both methods can meet the connection strength requirements under long-term vibration, high and low temperature and other working conditions, ensure the stability of the insulation resistance, effectively avoid the hidden troubles of loosening and short circuit, and balance the maintenance convenience and structural optimization, thereby providing a key guarantee for safe and reliable operation of the battery device.

[0016] In some embodiments of the first aspect, a plurality of partitions extending in the second direction are arranged inside the heat exchange channel, and the plurality of partitions divide the heat exchange channel into a plurality of flow channels. Each partition includes at least one communication hole that communicates adjacent two flow channels.

[0017] In the embodiments of the present application, the plurality of partitions extending in the second direction divide the heat exchange channel into a plurality of flow channels, and the communication holes of each partition realize the intercommunication of adjacent flow channels. The heat exchange contact area is increased by subdividing the flow channels, and the heat conduction is strengthened. The flow and pressure of each flow channel are balanced by the communication holes to promote medium flow, improve heat exchange efficiency and temperature regulation uniformity, and improve 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 embodiments of the present application, the fluorinated liquid is selected as the heat exchange medium, which can reduce the risk of leakage and short circuit due to its electrical insulation, and improve the safety of the battery device. Its thermal stability and high specific heat capacity can realize continuous heat exchange, and the temperature of the first wall can be stably controlled, so that the temperature of the high-voltage electrical component is 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 oppositely arranged along the first direction, and the first side wall is away from the first containing space relative to the second side wall. The battery device further includes a plurality of battery monomer assemblies arranged along the second direction, and each battery monomer assembly includes a plurality of battery monomers arranged along the first direction. At least one end of the plurality of battery monomer assemblies along the first direction abuts against the first side wall. The second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body.

[0021] In the embodiments of the present application, the first wall acts as an expansion beam, and the first side wall abuts against the battery monomer assembly to constrain the expansion displacement of the battery monomer along the first direction, so that the expansion displacement is controlled within a lower range and the structure of the battery monomer is prevented from being damaged. The first wall can also realize the multiplexing of the constraint of the battery monomer and the isolation of the high-voltage area, and does not need an additional expansion beam or constraint beam, thereby improving the space utilization and maintaining the structural stability of the battery device.

[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 wall, the second wall and the support structure are integrally formed, which weakens the weak points of separate connection, improves the overall strength and anti-deformation ability of the box body, reduces the number of parts and production processes, and accordingly reduces the cost of part procurement and the cost of manpower and material resources in the processing process, which helps to improve the market competitiveness of the product. The integrally formed structure avoids the connection gap between the parts, improves the sealing between the first wall, the second wall and the support structure, reduces the influence of internal liquid 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 oppositely arranged along the first direction, and the third beams are connected with the first wall, the second wall and the support structure.

[0025] In the embodiments of the present application, the two third beams of the frame are oppositely arranged along the first direction and connected with the first wall, the second wall and the support structure, which eliminates the assembly gap and forms an integrated frame with each part, improves the overall torsional stiffness and bending strength of the box body, and enhances the anti-vibration impact capability. At the same time, it blocks the internal and external airflow and liquid channels, and improves the protection and sealing performance. The welding connection does not require connecting parts, saves space of the battery device and reduces weight.

[0026] In a second aspect, the present application provides a box body, which includes a frame, and the frame includes oppositely arranged first and second beams, the first beam includes a first wall, a second wall and a support structure, the first wall and the second wall are oppositely arranged along a first direction, the support structure connects the first wall and the second wall, the first wall, the second wall and the support structure form a first containing space, and the first wall and the second beam form a second containing space; the first containing space is used for containing high-voltage electrical components, and the second containing space is used for containing battery monomers.

[0027] In a third aspect, the present application provides a power-using equipment including a battery device, and the battery device includes the battery device in the first aspect, and the battery device is used for providing electric energy.

[0028] In some embodiments, the power-using equipment is a vehicle, a ship or a spacecraft. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application;

[0030] Figure 2 FIG. 2 is a structural schematic diagram of a battery device according to an embodiment of the present application;

[0031] Figure 3 FIG. 3 is a structural diagram of a battery monomer according to an embodiment of the present application;

[0032] Figure 4 An exploded view of a battery cell according to an embodiment of the present application;

[0033] Figure 5 A structural view of a case according to an embodiment of the present application;

[0034] Figure 6 A partial top view of a case according to an embodiment of the present application;

[0035] Figure 7 A partial sectional view of a case according to an embodiment of the present application;

[0036] Figure 8 Another partial sectional view of a case according to an embodiment of the present application;

[0037] Figure 9 Still another partial sectional view of a case according to an embodiment of the present application;

[0038] Figure 10 A partial structural view of a case according to an embodiment of the present application.

[0039] In the drawings, the drawings are not drawn according to the actual proportions.

[0040] Reference signs:

[0041] 1000 - vehicle; 100 - battery device; 10 - case; 101 - first case portion; 102 - second case portion; 11 - frame; 110 - first beam; 111 - second wall; 12 - first wall; 121 - main portion; 122 - protruding portion; 13 - support structure; 131 - heat exchange passage; 1311 - partition; 1312 - liquid inlet; 1313 - liquid outlet; 132 - mounting plate; 141 - first accommodation space; 142 - second accommodation space; 20 - battery cell; 21 - shell; 211 - opening; 22 - end cover; 23 - electrode terminal; 24 - pressure relief mechanism; 25 - electrode assembly; 251 - tab; 30 - high-voltage electrical component; 200 - motor; 300 - controller. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0043] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, terms used to describe steps or results of steps in conjunction with the disclosure, terms describing the structure of the application, and terms describing the action of the application, are intended to refer to the descriptions already provided, above. It is further noticed that the use of the terms "include", "includes", "including", "have", "has", "having", "contain", "contains", or "containing", each followed by a list of one or more components, items or objects "comprise", "comprises", "comprising", "have", "has", "having", "contain", "contains", or "containing", are in each case meant to refer to the components, items or objects listed thereafter equally to referring to those components, items or objects listed before and / or there after. The use of any and all examples, or exemplary language (e.g., "such as" and "preferably"), in combination with the term "comprising", is intended to reflect only the inclusion of hand-picked elements, and not exclusion of additional unrecited elements of any equipment or method, or any additional methods. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the application.

[0045] Reference throughout this application to "example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. It is expressly understood that the described embodiments of the application are merely example and that one of ordinary skill in the art would be able to devise many alternative embodiments without the exercise of inventive faculty.

[0046] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0047] In the application, the term "and / or" is only a description of the relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in the application generally represents that the front and rear associated objects have an "or" relationship.

[0048] In the embodiments of the application, the same reference signs represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0049] In the application, "a plurality of" refers to more than two (including two), and similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0050] If there is no special indication, all the embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions.

[0051] If there is no special indication, all the technical features and optional technical features of the present application can be combined with each other to form new technical solutions.

[0052] In the embodiments of the present application, the battery monomer can be a secondary battery, which refers to a battery monomer that can be activated by charging after discharging.

[0053] The battery monomer can be 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 storage battery, etc. The present application is not limited thereto.

[0054] The battery device mentioned in the embodiments of the present application can include one or more battery monomer assemblies for providing voltage and capacity. The battery monomer assembly can include a plurality of battery monomers connected in series, parallel or mixed connection through a busbar component.

[0055] In some embodiments, the battery monomer assembly is usually formed by arranging a plurality of battery monomers.

[0056] As an example, the battery monomer assembly can be a battery module formed by arranging and fixing a plurality of battery monomers into an independent module. As an example, the battery module can be formed by bundling a plurality of battery monomers with a cable tie.

[0057] In some embodiments, the battery device can be a battery pack including a box and one or more battery monomer assemblies, and the battery monomer assemblies are accommodated in the box.

[0058] As an example, the battery monomer assembly can be a battery module, and the battery monomer assembly can be accommodated in the box by fixing the battery module in the box.

[0059] As an example, the battery monomer assembly can also be accommodated in the box by directly fixing a plurality of battery monomers in the box.

[0060] As an example, the box can include a first box part and a second box part. The first box part and the second box part are buckled so that the inside of the box forms a closed space to accommodate the battery monomer assembly. Here, closed means covered or closed, which can be sealed or unsealed. The first box part can be a top cover or a bottom plate.

[0061] As an example, the box can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively, so that the inside of the box forms a closed space to accommodate the battery monomer assembly.

[0062] In some embodiments, the box can be part of a chassis structure of a vehicle. For example, portions of the box can become at least part of a floor of the vehicle, or portions of the box can become at least part of cross members and longitudinal members of the vehicle.

[0063] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of water power, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0064] With the development of new energy technology, 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 of the battery device.

[0065] Based on the above considerations, the embodiments of the present application provide a battery device which can integrate high-voltage electrical components inside the battery device to improve the space utilization of the battery device. The battery device provided by the embodiments of the present application includes a box, high-voltage electrical components and battery cells. 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 closer 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 containing space, the first wall and the second beam form a second containing space, and the support structure has a heat exchange channel extending in a second direction inside the support structure; the high-voltage electrical components are contained in the first containing space; the battery cells are contained in the second containing space and are in contact with 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 perpendicular to the thickness direction of the box.

[0066] In the embodiments of the present application, the first containing space formed by the first wall, the second wall and the support structure on the first beam of the frame, and the second containing space formed by the first wall and the second beam, are used to contain the high-voltage electrical components and the battery cells respectively, realizing the physical separation and functional division of the two, utilizing the space potential of the box, containing the high-voltage electrical components in the first containing space formed by the first beam, improving the space utilization of the box, and making the overall structure of the battery device more compact. The structure in the support structure is reused as a heat exchange channel, without the need for additional cooling or heating devices, simplifying the structure while avoiding performance degradation and failure of components due to overheating, prolonging the service life of the high-voltage electrical components, and enabling stable operation of the high-voltage system of the battery device.

[0067] The technical solutions described in this application are applicable to various electrical devices that use battery devices. These electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power 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. This application does not impose any special limitations on the above-mentioned electrical devices.

[0068] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0069] For example, Figure 1 This is a structural schematic diagram of the vehicle according to an embodiment of this application. Figure 1 As shown, vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100, a motor 200, and a controller 300 can be installed inside vehicle 1000. The controller 300 controls the power supply from the battery device 100 to the motor 200. For example, the battery device 100 can be installed at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, it can serve as the operating power source for vehicle 1000's electrical system, such as for the power requirements of starting, navigation, and operation. In another embodiment of this application, the battery device 100 can not only serve as the operating power source for vehicle 1000 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving force for vehicle 1000.

[0070] Figure 2 This is a schematic diagram of the battery device according to an embodiment of this application. Figure 2 As shown, the battery device 100 of this application embodiment may include a plurality of battery cells 20 to meet different power usage needs. It should be understood that, as Figure 2 As shown, the battery device 100 in this embodiment may further include a housing 10.

[0071] The box 10 can include two parts, here referred to as a first box part 101 and a second box part 102, which are buckled together. The shapes of the first box part 101 and the second box part 102 can be determined according to the shapes of the components contained therein, for example, according to the shapes of the combination of the plurality of battery monomers 20, at least one of the first box part 101 and the second box part 102 has an opening. For example, the first box part 101 and the second box part 102 can each be a hollow cuboid and each have an opening face, the opening of the first box part 101 and the opening of the second box part 102 are oppositely arranged, and the first box part 101 and the second box part 102 are buckled to each other to form a box 10 having a closed cavity, which can be used to contain the plurality of battery monomers 20. The plurality of battery monomers 20 are combined in parallel or in series or in a hybrid combination and placed in the box 10 formed by buckling the first box part 101 and the second box part 102.

[0072] For another example, only one of the first box part 101 and the second box part 102 can be a hollow cuboid with an opening, and the other can be a plate to cover the opening. Taking the second box part 102 as a hollow cuboid with an opening and the first box part 101 as a plate as an example, the first box part 101 covers the opening of the second box part 102 to form a box 10 having a closed cavity, which can be used to contain the plurality of battery monomers 20.

[0073] Figure 3 A structural diagram of a battery monomer of an embodiment of the present application, Figure 4 An exploded view of a battery monomer of an embodiment of the present application. As Figure 3 As shown in Figure 4 The battery monomer 20 of the embodiment of the present application can include a shell 21, an end cover 22, an electrode terminal 23, a pressure relief mechanism 24, and an electrode assembly 25.

[0074] The shell 21 is a hollow structure with an opening 211, and the electrode assembly 25 is contained in the shell 21. The shape of the shell 21 can be determined according to the specific shape of the electrode assembly 25. For example, if the electrode assembly 25 is a cuboid structure, the shell 21 can also be a cuboid structure. Figure 3 and Figure 4 An example is shown in which the shell 21 and the electrode assembly 25 are square.

[0075] The material of the shell 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and the embodiment of the present application does not limit this.

[0076] End cap 22 is used to seal opening 211 to form a sealed mounting space for accommodating electrode assembly 25. The mounting space is also used to accommodate electrolyte, such as electrolyte solution. Electrode terminals 23 are mounted on end cap 22 for connection to electrode assembly 25, i.e., electrode terminals 23 are connected to tabs 251 of electrode assembly 25.

[0077] The end cap 22 is also equipped 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 the battery cell 20 exploding.

[0078] It should be understood that the shape of the battery cell 20 in this application embodiment can be flexibly set according to actual application, that is, the outer shell 21 of the battery cell 20 can be any polyhedral structure, for example, it can be set as a cuboid or a cylinder, etc.

[0079] Figure 5 This is a structural diagram of the box body according to an embodiment of this application. Figure 6 This is a partial top view of the box body according to an embodiment of this application. Figure 7 This is a partial cross-sectional view of the housing according to an embodiment of this application. Figure 5 to Figure 7 As shown, the battery device 100 includes a housing 10, a high-voltage electrical component 30, and a battery cell 20. The housing 10 includes a frame 11, which 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, with the first wall 12 closer to the second beam than 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 receiving space 141, and the first wall 12 and the second beam form a second receiving space 142. The support structure 13 has a heat exchange channel 131 extending along a second direction inside. The high-voltage electrical component 30 is received in the first receiving space 141. The battery cell 20 is received in the second receiving space 142 and is electrically connected to the high-voltage electrical component 30. The first direction is perpendicular to the thickness direction of the housing 10, and the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the housing 10.

[0080] The housing 10, serving as the load-bearing structure of the battery device 100, is mainly composed of a frame 11. The frame 11 forms an accommodating space through integral molding or splicing, providing an installation base and protective shell for the internal components.

[0081] In some embodiments, the frame 11 is provided with a first beam 110 and a second beam opposite to each other along a first direction, which together constitute the support frame of the frame 11, and the frame forms an accommodating space.

[0082] In some embodiments, the first beam 110 and the second beam can be distributed in parallel and at intervals to form a square frame 11.

[0083] For ease of description, the embodiments of the present application define three reference directions based on the box 10. The direction perpendicular to the top or bottom of the box 10 is the Z direction, i.e., the thickness direction of the box 10, which is the third direction. The top refers to the top cover of the box 10, i.e., the uppermost panel of the box 10 in the use state of the battery device 100. The bottom refers to the bottom plate of the box 10, i.e., the lowermost panel of the box 10 in the use state of the battery device 100. The direction perpendicular to the extension direction of the first beam 110 of the box 10 is the X direction, i.e., the first direction. The direction perpendicular to the X direction and perpendicular to the Z direction is the Y direction, i.e., the second direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0084] 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 together enclose a first containing space 141 through spatial layout. The first wall 12 and the second wall 111 are arranged in parallel along the first direction to constitute the two longitudinal boundaries of the first containing space 141. The support structure 13 is connected to the bottom of the first wall 12 and the second wall 111 to form the bottom bearing surface of the first containing space 141. The three together constitute a cavity space, i.e., the first beam 110 includes a groove for placing the high-voltage electrical component 30. This space serves as the installation area of the high-voltage electrical component 30, achieving physical separation of the high-voltage component and the second containing space 142 where the battery monomer 20 is located, reducing electromagnetic interference and safety risks.

[0085] In some embodiments, the support structure 13 can serve as a bearing component of the high-voltage electrical component 30. Its structure form can be designed according to the size, weight, and installation requirements of the high-voltage electrical component 30. The connection mode between the support structure 13, the first wall 12, and the second wall 111 can be selected according to the material and strength requirements of the box 10, such as welding, bolt locking, or integral molding, to ensure that there is no loosening or deformation under long-term vibration and impact conditions.

[0086] In some embodiments, the high-voltage electrical component 30 can be fixed to the first wall 12 and the second wall 111, i.e., using the first wall 12 and the second wall 111 as the bearing structure of the high-voltage electrical component 30, and fixedly connected through welding, bolt locking, etc.

[0087] The first wall 12 is located between the second wall 111 and the second beam, and the three are parallel. Through the partitioning effect of the first wall 12, the accommodating space formed by the frame 11 is divided into a first accommodating space 141 and a second accommodating space 142. Specifically, the space between the first wall 12, the second wall 111 and the support structure 13 forms the first accommodating space 141, and the space between the second wall 111 and the second beam forms the second accommodating space 142.

[0088] The high-voltage electrical components 30, such as high-voltage relays, fuses, high-voltage control modules of battery management systems, connectors, etc., are centrally accommodated in the first accommodating space 141. The electrical components can include high-voltage contactors, fuses, relays, etc. and electrical elements related to high-voltage transmission and control.

[0089] In some embodiments, the box 10 can also include a cover plate that covers the hollow structure, so that the hollow structure is a closed structure.

[0090] The first accommodating space 141 physically separates the high-voltage components from other areas, reducing the safety risk of high-voltage electric leakage and arc discharge to peripheral components. The first beam 110 not only serves as a support for the box 10, but also serves to accommodate the high-voltage electrical components 30, achieving an integrated fusion of structural function and protection function.

[0091] 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, accommodating the high-voltage electrical components 30, i.e. the high-voltage electrical components 30 do not need an external shell, but use the first accommodating space 141 of the first beam 110.

[0092] The first wall 12 and the second wall 111 are parallel and spaced apart along the first direction, and the opposite inner side surfaces thereof form the main protection boundary of the high-voltage electrical components 30, replacing the independent shell structure of the conventional high-voltage electrical components 30. In terms of structural form, the cross section of the first beam 110 can be designed as a groove with a certain depth or a closed profile, and the inner side surface thereof can be polished or coated to improve the flatness and insulation performance, ensuring the adaptability with the high-voltage electrical components 30.

[0093] As a shell, the first wall 12 and the second wall 111 can provide multi-dimensional protection for the high-voltage electrical components 30. On the one hand, the rigid structure itself resists external impact, vibration and other mechanical loads, avoiding deformation or displacement of the high-voltage electrical components 30 due to external forces; on the other hand, the closed space formed by the first beam 110 and the cover plate can effectively block the intrusion of external pollutants such as dust and water vapor, creating a stable working environment for the high-voltage electrical components 30. At the same time, the first beam 110 can be made of a composite material with insulation properties or a metal material with insulation treatment on the surface, directly forming an electrical isolation barrier between the high-voltage electrical components 30 and other metal structures of the box 10, reducing the risk of electric leakage and enhancing the safety of the device.

[0094] In some embodiments, the support structure 13 internally comprises a heat exchange channel 131 extending along the second direction, the support structure 13 extending along the second direction as the first wall 12, i.e. the heat exchange channel 131, the support structure 13 and the first wall 12 have the same extension direction, and the heat exchange channel 131 can pass through the support structure 13. The battery cell 20 or the battery cell assembly composed of a plurality of battery cells 20 is accommodated in the second accommodation space 142, which is designed according to the size and arrangement requirements of the battery cell 20, and 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 composed of the frame 11 and the beam body can also buffer external impact force and reduce the risk of damage to the battery cell 20.

[0095] In some embodiments, the space layout of the second accommodation space 142 can reserve a heat dissipation channel, such as an air flow channel or a liquid cooling pipe space, to facilitate the integration of a thermal management system and achieve uniform heat dissipation or heating of the battery cell 20 to maintain its optimal working temperature range.

[0096] In some embodiments, the high-voltage electrical component 30 is electrically connected to the battery cell 20 through an electrical connector, which can cross the first wall 12. The electrical connector can be a busbar module, a high-voltage connector, or a high-voltage cable, etc.

[0097] In the embodiments of the present application, the first accommodation space 141 formed by the first wall 12, the second wall 111 and the support structure 13 on the first beam 110 of the frame 11, and the second accommodation space 142 formed by the first wall 12 and the second beam, accommodate the high-voltage electrical component 30 and the battery cell 20 respectively, achieving physical separation and functional partitioning of the two, utilizing the space potential of the box 10, and accommodating the high-voltage electrical component 30 in the first accommodation space 141 formed by the first beam 110, improving the space utilization of the box 10 and making the overall structure of the battery device 100 more compact. The structure in the support structure 13 is reused as a heat exchange channel 131, without the need for additional heat dissipation or heating devices, simplifying the structure while avoiding performance degradation and failure of components due to overheating, prolonging the service life of the high-voltage electrical component 30 and enabling stable operation of the high-voltage system of the battery device 100.

[0098] In the embodiments 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.

[0099] In some embodiments, the surface of the support structure 13 facing the first accommodation space 141 is the mounting surface of the high-voltage electrical component 30, which can be designed with positioning features such as limiting grooves, protruding positioning columns or anti-slip patterns according to the bottom profile of the electrical component to achieve positioning of the high-voltage electrical component 30 and prevent displacement during installation.

[0100] In some embodiments, the high-voltage electrical component 30 is directly placed or attached to the surface of the support structure 13, which can be supplemented by a small amount of fasteners to enhance fixation.

[0101] The surface of the support structure 13 can be pre-processed with suitable mounting holes or clamping slots, and the high-voltage electrical component 30 is fastened to the support structure 13 by bolt connection, buckle fixation or adhesion, etc. For example, if bolt connection is used, threaded holes can 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 high-voltage electrical component 30 is fixed by tightening the bolts, so that the high-voltage electrical component 30 will not displace in the device running or vibration environment.

[0102] The support structure 13, as a component of the first beam 110, has high structural strength and can provide stable support for the high-voltage electrical component 30, reducing the problem of loose connection caused by vibration.

[0103] In the embodiments of the present application, the support structure 13 is a component of the first accommodating space 141 and directly provides support for the high-voltage electrical component 30 mounted on the surface of the first accommodating space 141. The fixation of the high-voltage electrical component 30 can be achieved without additional brackets, which not only adapts to the first accommodating space 141 to save space and improve the space utilization rate of the box 10, but also enhances the stability and safety of the installation of the high-voltage electrical component 30 with the support of the support structure 13.

[0104] In the embodiments of the present application, the first wall 12 is arranged on the surface of the heat exchange channel 131, and the support structure 13 extends along the second direction together with the first wall 12.

[0105] The extension direction of the heat exchange channel 131 is the same as the extension direction of the first wall 12, so that the heat exchange channel 131 and the first wall 12 can form corresponding coverage in the full length range, so that each section of the first wall 12 can fully contact the heat exchange channel 131, improving the overall heat exchange efficiency and the uniformity of temperature regulation.

[0106] The first wall 12 is arranged on the surface of the heat exchange channel 131 and can be connected by bonding, welding or integral molding, so that the heat exchange channel 131 can exchange heat with the first wall 12 through heat conduction. Specifically, when the heat exchange medium flows in the channel, heat exchange is carried out with the channel wall through convection, and then energy is transmitted to the first wall 12 through heat conduction, realizing the temperature regulation of the first wall 12.

[0107] The first wall 12 is in direct contact or close proximity to the high-voltage electrical component 30, forming a heat conduction path. When the high-voltage electrical component 30 is working, heat is generated due to resistance loss, electromagnetic induction, etc. If the heat accumulates, it may cause performance degradation or even failure of the component. At this time, the heat exchange channel 131 inside the support structure 13 indirectly achieves heat dissipation or heat preservation of the high-voltage electrical component 30 by adjusting the temperature of the first wall 12.

[0108] 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 carries it away, so that the first wall 12 is maintained at a low temperature, and the temperature of the high-voltage electrical component 30 is controlled to remain within an appropriate range.

[0109] In some embodiments, the heat exchange channel 131 also includes an inlet 1312 and an outlet 1313. The heat exchange medium enters the heat exchange channel 131 through the inlet 1312, and after heat exchange with the first wall 12 inside the heat exchange channel 131, it flows out through the outlet 1313.

[0110] In some embodiments, the support structure 13 can also include a heat exchange channel 131 that directly adjusts the temperature of the high-voltage electrical component 30, i.e., while directly heat exchanging with the high-voltage electrical component 30, the heat exchange of the high-voltage electrical component 30 is assisted by heat exchanging with the first wall 12.

[0111] In some embodiments, the support structure 13 can also include a heat exchange channel 131 of the second wall 111, i.e., the heat exchange of the high-voltage electrical component 30 is assisted by heat exchanging with the second wall 111.

[0112] In the embodiments 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 component 30 during operation is transferred to the heat exchange channel 131 through the first wall 12 and dissipated, thereby assisting the heat dissipation of the high-voltage electrical component 30 and improving the heat dissipation effect of the high-voltage electrical component 30.

[0113] Figure 8 Another partial cross-sectional view of the box of the embodiments of the present application is shown. As shown in Figure 8 The first wall 12 includes a main body portion 121 and a protruding portion 122. The main body portion 121 is arranged opposite to the second wall 111 along a first direction, and the protruding portion 122 extends towards the first containing space 141. A projection of the protruding portion 122 along a third direction falls on the surface of the heat exchange channel 131. The third direction is the thickness direction of the box 10.

[0114] The first wall 12 includes a main body portion 121 and a protruding portion 122. The main body portion 121 is arranged opposite to the second wall 111 along the first direction, and together with the second wall 111, forms a main boundary of the first accommodating space 141, providing a mounting space for the high-voltage electrical component 30.

[0115] In some embodiments, the protruding portion 122 extends from the main body portion 121 towards the inside of the first accommodating space 141, i.e. protrudes towards the area where the high-voltage electrical component 30 is located.

[0116] In terms of spatial projection relationship, the projection of the protruding portion 122 along the third direction towards the heat exchange channel 131 falls within the surface range of the heat exchange channel 131, i.e. the protruding portion 122 can be in full contact with the heat exchange channel 131 for sufficient heat exchange.

[0117] The arrangement of the protruding portion 122 can increase the contact area between the first wall 12 and the heat exchange channel 131, thereby strengthening the heat exchange efficiency. The heat can be directly transferred from the protruding portion 122 to the main body portion 121, and then to the high-voltage electrical component 30 for heat exchange.

[0118] In the embodiments of the present application, the main body portion 121 of the first wall 12 is arranged opposite to the second wall 111 along the first direction, the protruding portion 122 extends towards the first accommodating space 141, and the projection of the protruding portion 122 along the third direction towards the heat exchange channel 131 falls within the surface of the heat exchange channel 131. The contact area between the first wall 12 and the heat exchange channel 131 is increased, the heat conduction path between them is strengthened, and 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 protruding portion 122, thereby improving the heat exchange efficiency and the uniformity of temperature regulation.

[0119] Continuing to refer to Figure 8 , the support structure 13 further 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 is arranged spaced apart from the heat exchange channel 131 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.

[0120] In some embodiments, one end of the mounting plate 132 is connected to the protruding portion 122 of the first wall 12, and the other end is connected to the second wall 111, forming a continuous support of the second wall 111, the protruding portion 122, the mounting plate 132 and the main body portion 121.

[0121] In some embodiments, when the first wall 12 only includes the main body portion 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.

[0122] The mounting plate 132 is arranged spaced apart from the heat exchange channel 131 to form an isolation cavity, i.e. the isolation cavity isolates the heat exchange channel 131 from the high-voltage electrical component 30.

[0123] 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 is attached to the bottom or side of the high-voltage electrical component 30 by mechanical connection or adhesive bonding, achieving physical fixation.

[0124] In some embodiments, the shape of the mounting plate 132 can be designed to adapt 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.

[0125] In some embodiments, the shape of the mounting plate 132 can be the same as the shape of the first accommodating space 141 to isolate the high-voltage electrical component 30 from the rest of the space.

[0126] In some embodiments, the heat exchange channel 131 can be located below the mounting plate 132, while the high-voltage electrical component 30 is cooled by the mounting plate 132.

[0127] The isolation cavity extends along the second direction, forming an internal channel. The isolation cavity is located between the high-voltage electrical component 30 and possible sources of liquid leakage, such as the electrolyte of the battery cell 20 and the heat exchange channel 131, forming a physical barrier. Even if liquid leakage occurs, the liquid will first enter the isolation cavity rather than directly contacting the high-voltage electrical component 30.

[0128] In the embodiments of the present application, the mounting plate 132 of the support structure 13 and the isolation cavity formed by the heat exchange channel 131 separate the high-voltage electrical component 30 from the source of liquid leakage. The liquid leakage will first enter the isolation cavity, avoiding contact between the liquid and the high-voltage electrical component 30, and can block the invasion of liquid leakage, improving the liquid leakage protection level of the high-voltage electrical component 30, and making its insulation performance and working stability not affected by liquid leakage.

[0129] In the embodiments of the present application, the connection method of the high-voltage electrical component 30 and the mounting plate 132 includes locking or adhesive.

[0130] Locking connection is a connection method that fixes the high-voltage electrical component 30 to the mounting plate 132 by mechanical fasteners such as bolts, screws, nuts, etc.

[0131] When implementing, the type and size of the fastener should be selected to adapt to the structural characteristics of the high-voltage electrical component 30, the material and stress requirements of the mounting plate 132.

[0132] In some embodiments, mounting holes are pre-set at the housing or mounting ears of the high-voltage electrical component 30, and threaded holes or through holes are processed at the pre-set positions of the mounting plate 132. The mounting holes and threaded holes are fixed by screwing a bolt / screw through the mounting hole and the threaded hole, or a nut is used for fastening.

[0133] To improve the connection stability, a gasket can be added between the fastener and the contact surface to disperse the pressure and prevent loosening. For application scenarios in a vibrating environment, a check bolt or a thread locking glue can also be used to further enhance the anti-vibration performance of the locking.

[0134] The locking can provide stable fastening force, effectively withstand the weight of the high-voltage electrical component 30, vibration impact, and mechanical load during operation, and ensure that the high-voltage electrical component 30 does not displace or fall off during long-term use. It is convenient for later maintenance, repair, or component replacement. When the high-voltage electrical component 30 needs to be repaired or replaced, it can be quickly disassembled by removing the fastener, reducing maintenance costs. It is 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 different sizes and weights by adjusting the specifications of the fastener.

[0135] The adhesive connection is a connection method that fixes the high-voltage electrical component 30 and the mounting plate 132 by applying adhesive to the contact surface between them and using the adhesive force after the adhesive solidifies.

[0136] In some embodiments, the adhesive needs to meet the requirements of the working environment of the high-voltage electrical component 30, and is preferably a structural adhesive with excellent high-temperature resistance, vibration resistance, insulation performance, and a certain elasticity, such as epoxy resin glue and silicone rubber adhesive.

[0137] After the adhesive solidifies, it can fill the small gaps in the contact surface and form a sealed structure, which can prevent the intrusion of water vapor, dust, and other impurities, and most adhesives have good electrical insulation, which can enhance the insulation and protection between the high-voltage electrical component 30 and the mounting plate 132, reducing the risk of electric leakage. Without additional mechanical fasteners, the weight and volume of the connection components can be reduced, which is especially suitable for scenarios with high lightweight requirements.

[0138] In the embodiments of the present application, the high-voltage electrical component 30 and the mounting plate 132 are connected by locking or adhesive. The locking connection can provide high mechanical stability and convenient disassembly, which is suitable for heavy load and complex stress scenarios. The adhesive connection can enhance the insulation and sealing, achieve vibration and noise reduction, and achieve lightweight, which is suitable for lightweight protection requirements. Both methods can meet the connection strength requirements in long-term vibration, high and low temperature, etc. conditions, ensure stable insulation resistance, effectively avoid loosening and short circuit hazards, and balance maintenance convenience and structural optimization, providing key protection for safe and reliable operation of the battery device 100.

[0139] Figure 9 Another partial cross-sectional view of the box of the embodiments of the present application. As shown in Figure 9 The heat exchange channel 131 is internally provided with a plurality of partitions 1311 extending in the second direction, 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 communication hole that communicates adjacent two flow channels.

[0140] The heat exchange channel 131 is internally provided with a plurality of partitions 1311 extending in the second direction, which are connected with the inner wall of the heat exchange channel 131, for example, by welding, one-piece forming or the like, to divide the originally single heat exchange channel 131 into a plurality of independent flow channels. Among them, the plurality of flow channels can be arranged in the first direction or in the third direction.

[0141] The number of partitions 1311 can be flexibly set according to the heat exchange requirement, and the material thereof is consistent with the main body of the heat exchange channel 131, and the thickness is designed to take into account the structural strength and heat conduction performance.

[0142] At least one communication hole is formed on each partition 1311, which can be circular, oval or rectangular in shape, and the aperture size is designed according to the flow distribution requirement of the flow channel, and the distribution position of the communication hole on the partition 1311 can be staggered or located at the same position.

[0143] The medium between adjacent flow channels flows through the communication hole, and when the heat exchange medium enters the heat exchange channel 131, the medium can flow to the adjacent flow channel through the communication hole, avoiding the influence of the single flow channel on the heat exchange efficiency, and at the same time, the medium flow of each flow channel tends to be balanced.

[0144] The existence of the partition 1311 can cause differences in flow resistance along the flow channel, and the communication hole can balance the pressure of each flow channel through medium intercommunication, reduce the local high or low pressure phenomenon, and reduce the energy consumption of the heat exchange system.

[0145] In the embodiment of the application, the plurality of partitions 1311 extending in the second direction in the heat exchange channel 131 divides it into a plurality of flow channels, and the communication hole of each partition 1311 realizes the intercommunication of adjacent flow channels, which not only increases the heat exchange contact area through flow channel subdivision and strengthens heat conduction. With the help of the communication hole, the flow and pressure of each flow channel are balanced, the medium flow is promoted, the heat exchange efficiency and temperature regulation uniformity are improved, and the stability of the heat exchange system is improved.

[0146] In the embodiment of the application, the heat exchange medium in the heat exchange channel 131 is fluorinated liquid.

[0147] There is a high-voltage environment inside the battery device 100, and once the heat exchange medium leaks and contacts the live parts such as the high-voltage electrical component 30, if the heat exchange medium is conductive, it may cause a short circuit and other serious safety accidents. The fluorinated liquid has electrical insulation performance, and its insulation resistance is extremely high, which can ensure effective heat exchange while providing reliable electrical isolation for the battery device 100, reducing the risk of electrical failure caused by leakage of the heat exchange medium, and improving the safety and reliability of the battery device 100.

[0148] The fluorinated liquid also has thermal stability, can maintain the stability of its physical and chemical properties within a relatively wide temperature range, and can maintain stable heat exchange performance. The specific heat capacity is relatively large, that is, the temperature change is relatively small when the same heat is absorbed or released by unit mass of the fluorinated liquid, which can efficiently absorb the heat of the first wall 12 and further provide continuous and stable cooling effect for the high-voltage electrical component 30.

[0149] In the embodiments of the present application, the fluorinated liquid is selected as the heat exchange medium, which can reduce the risk of leakage and short circuit due to electrical insulation, and improve the safety of the battery device 100; the thermal stability and high specific heat capacity can realize continuous heat exchange, and the temperature of the first wall 12 can be stably controlled, so that the temperature of the high-voltage electrical component 30 is within a reasonable range.

[0150] In the embodiments of the present application, the first wall 12 includes a first side wall and a second side wall oppositely arranged along a first direction, and the first side wall is away from the first containing space 141 relative to the second side wall; the battery device 100 further includes a plurality of battery monomer assemblies arranged along a second direction, and each battery monomer assembly includes a plurality of battery monomers 20 arranged along the first direction, and at least one end of the plurality of battery monomer assemblies along the first direction abuts 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.

[0151] The first wall 12 extends along the second direction and includes a first side wall and a second side wall oppositely arranged along the first direction. Among them, the first side wall is away from the first containing space 141 relative to the second side wall, that is, the first side wall faces the battery monomer assembly, and the second side wall faces the first containing space 141.

[0152] The material of the first wall 12 can be selected from materials with strength and certain elastic deformation capacity, so that it does not deform when bearing the expansion load, and at the same time absorbs part of the expansion energy through its elastic deformation.

[0153] A plurality of battery monomer assemblies are arranged along the second direction in the battery device 100, and each battery monomer assembly is composed of a plurality of battery monomers 20 arranged along the first direction. The battery monomers 20 will generate expansion force due to the volume change of the electrode material during the charging and discharging cycle. After the expansion forces of the plurality of battery monomers 20 are superimposed, a significant lateral thrust will be generated on the surrounding structure. If there is no effective constraint, long-term expansion-shrinkage cycle may cause displacement of the battery monomer assembly, increase of the distance between the battery monomers, and even cause risks such as structural loosening and electrolyte leakage.

[0154] At least one end of the plurality of battery monomer assemblies along the first direction abuts against the first side wall, that is, the end of the battery monomer assembly is attached to the first side wall, so that the first wall 12 becomes an expansion beam directly bearing the expansion force of the battery monomer 20 in the first direction.

[0155] The first side wall can form a rigid support to the end of the battery cell assembly by surface contact, and the expansion force of the plurality of battery cells 20 can be concentrated and transmitted to the first wall 12. The overall structural strength of the first wall 12 can resist lateral loads in the first direction, control the maximum expansion displacement of the battery cell assembly within a smaller range, and reduce the possibility of structural damage of the battery cells 20 due to excessive expansion.

[0156] In some embodiments, the first wall 12 uniformly receives the expansion force through the first side wall, and disperses the load to the entire box 10 through the rigid connection with the frame 11, so that the stress distribution is more uniform. While the first wall 12 serves as an expansion beam to constrain the battery cells 20, its second side wall still provides protection and boundary support for the first containing space 141, realizing the functional reuse of battery cell constraint and high-voltage electrical component 30 isolation protection, without the need for additional independent expansion constraint beams or high-voltage boxes for high-voltage electrical components 30, simplifying the internal structure of the box 10 and improving space utilization.

[0157] In the embodiments of the present application, the first wall 12 serves as an expansion beam, and its first side wall abuts against the battery cell assembly to constrain the expansion displacement of the battery cells 20 in the first direction, controlling the expansion displacement within a lower range and avoiding structural damage of the battery cells 20. The first wall 12 can also realize the reuse of battery cell constraint and high-voltage area isolation function and protection, without the need for additional expansion beams or constraint beams, improving space utilization and enabling the battery device 100 to maintain structural stability.

[0158] Figure 10 A partial structure diagram of the box of the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the first wall 12, the second wall 111, and the support structure 13 are integrally formed. Figure 10

[0159] The support structure 13, in conjunction with the first wall 12, forms a complete frame based on the connection of the second wall 111. The integrally formed process can use injection molding and the like, directly forming a complete body of the first wall 12, the second wall 111, and the support structure 13 during the molding process, avoiding the connection steps between traditional independent components, and reducing the number of components.

[0160] In some embodiments, if the high-voltage electrical component 30 and the mounting plate 132 are connected by a locking connection, the mounting plate 132 will reserve mounting holes during the integrally formed process, so that the connecting member can connect the high-voltage electrical component 30 and the mounting plate 132 through the mounting holes.

[0161] ​In the embodiments of the present application, the first wall 12 is connected with the support structure 13 and integrally formed, which weakens the weak point of the split connection, improves the overall strength and anti-deformation ability of the box body 10, and reduces the number of parts and production processes, thereby reducing the cost of part procurement and the cost of manpower and material resources in the processing process, and helping to improve the market competitiveness of the product. The integrally formed structure avoids the connection gap between the parts, improves the sealing between the first wall 12, the second wall 111 and the support structure 13, reduces the influence of internal liquid leakage of the battery device 100 on the high-voltage electrical components 30, and improves the safety and reliability of the battery device 100.

[0162] In the embodiments of the present application, the frame 11 includes two third beams oppositely arranged along the first direction, and the third beams are connected with the first wall 12, the second wall 111 and the support structure 13.

[0163] The frame 11 includes two third beams oppositely arranged along the first direction, and the two third beams are parallel and spaced apart, and are perpendicular to the second wall 111 and the third beam, and together form a rectangular frame 11.

[0164] The third beam is a longitudinal support component of the box body 10, and the length of the third beam is adapted to the second direction size of the box body 10, and the material can be selected as the same metal material as the first wall 12 and the second wall 111.

[0165] In some embodiments, the two ends of the first wall 12, the second wall 111 and the support structure 13 can be fixedly connected with the two third beams by means of gluing, connecting pieces or the like.

[0166] In some embodiments, the two ends of the first wall 12, the second wall 111 and the support structure 13 are fixedly connected with the two third beams by welding, and the welding process can be selected according to the material properties.

[0167] The welding connection can eliminate the assembly gap and stress concentration problem 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 whole without gap, and the torsional stiffness and bending strength of the box body 10 are improved.

[0168] In some embodiments, the continuous weld can block the airflow or liquid channel between the inside and the outside of the box body 10, and cooperate with the sealing treatment of the weld area, such as coating sealant, to improve the protection performance of the box body 10.

[0169] In some embodiments, the welding connection does not need to reserve bolt holes and installation space, so that the parts are closely arranged, and the invalid space occupation of the box body 10 is reduced.

[0170] In the embodiments of the present application, the two third beams of the frame 11 are arranged opposite to each other along the first direction, and are connected with the first wall 12, the second wall 111 and the support structure 13, thereby eliminating the assembly gap, forming an integrated frame with each component, improving the overall torsional stiffness and bending strength of the box 10, and enhancing the anti-vibration impact capability. At the same time, the internal and external airflow and liquid channels are blocked, and the protection and sealing performance is improved. The welding connection does not require connecting parts, thereby saving the space of the battery device 100 and reducing the weight.

[0171] According to some embodiments of the present application, the present application also provides a box 10, which comprises 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 support 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 support structure 13 connecting the first wall 12 and the second wall 111, the first wall 12, the second wall 111 and the support structure 13 forming a first containing space 141, the first wall 12 and the second beam forming a second containing space 142; the first containing space 141 is used for containing a high-voltage electrical component 30, and the second containing space 142 is used for containing a battery monomer 20.

[0172] According to some embodiments of the present application, the present application also provides a power-consuming device, which can comprise a battery device 100 for providing electric energy.

[0173] In the embodiments of the present application, the battery device 100 comprises a box 10, a high-voltage electrical component 30 and a battery monomer 20, the box comprises 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 support structure 13, the first wall 12 and the second wall 111 being arranged opposite to each other along a first direction, the support structure 13 connecting the first wall 12 and the second wall 111, the first wall 12, the second wall 111 and the support structure 13 forming a first containing space 141, the first wall 12 and the second beam forming a second containing space 142, the support structure 13 having a heat exchange channel 131 extending along a second direction inside; the high-voltage electrical component 30 is contained in the first containing space 141; the battery monomer 20 is contained in the second containing space 142 and is electrically connected with the high-voltage electrical component 30; wherein the first direction is perpendicular to the thickness direction of the box 10, the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box 10.

[0174] It should be understood that the battery device 100 can also comprise the battery device 100 in any of the above-mentioned embodiments.

[0175] The power-consuming device can be any of the devices or systems using the battery device 100 as described above.

[0176] According to some embodiments of the present application, referring to Figure 5 to Figure 10The battery device 100 comprises a box body 10, a high-voltage electrical component 30 and a battery cell 20. The box body 10 comprises a frame 11, the frame 11 comprises a first beam 110 and a second beam arranged oppositely, the first beam 110 comprises a first wall 12, a second wall 111 and a support structure 13, the first wall 12 and the second wall 111 are arranged oppositely 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 containing space 141, and the first wall 12 and the second beam form a second containing space 142; the high-voltage electrical component 30 is contained in the first containing space 141; the battery cell 20 is contained in the second containing space 142 and is electrically connected with the high-voltage electrical component 30; wherein the first direction is perpendicular to the thickness direction of the box body 10.

[0177] The high-voltage electrical component 30 is installed on the surface of the support structure 13 facing the first containing space 141. The support structure 13 has a heat exchange channel 131 extending along a second direction inside, and the first wall 12 is arranged on the surface of the heat exchange channel 131; wherein the support structure 13 and the first wall 12 extend along the second direction, the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box body 10. The first wall 12, the second wall 111 and the support structure 13 are integrally formed. The frame 11 comprises two third beams arranged oppositely along the first direction, and the third beams are connected with the first wall 12, the second wall 111 and the support structure 13.

[0178] The first wall 12 comprises a main body part 121 and a protruding part 122, the main body part 121 is arranged oppositely along the first direction with the second wall 111, and the protruding part 122 extends towards the first containing space 141, and the projection of the protruding part 122 along a third direction towards 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.

[0179] The support structure 13 further comprises a mounting plate 132 extending along the second direction, the mounting plate 132 connects the first wall 12 and the second wall 111, and the mounting plate 132 and the heat exchange channel 131 are arranged with a spacing to form an isolation cavity, and the high-voltage electrical component 30 is arranged on the side of the mounting plate 132 away from the isolation cavity.

[0180] The heat exchange channel 131 is provided with a plurality of partitions 1311 extending along the second direction inside, and the plurality of partitions 1311 separate the heat exchange channel 131 into a plurality of flow channels, each partition 1311 comprises at least one communication hole, and the communication hole communicates two adjacent flow channels. The heat exchange medium in the heat exchange channel 131 is fluorinated liquid.

[0181] The first wall 12 comprises a first side wall and a second side wall oppositely arranged along a first direction, the first side wall being distanced from the first containing space 141 relative to the second side wall; the battery device 100 further comprises a plurality of battery cell assemblies arranged along a second direction, each of 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.

[0182] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, include: A housing (10) includes a frame (11), the frame (11) including a first beam (110) and a second beam disposed 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 disposed opposite to each other along a first direction. The first wall (12) is closer to the second beam than the second wall (111). The support structure (13) connects the first wall (12) and the second wall (111). 12) The second wall (111) and the supporting structure (13) form a first receiving space (141), and the first wall (12) and the second beam form a second receiving space (142). The supporting structure (13) has a heat exchange channel (131) extending in a second direction and an mounting plate (132) extending in the second direction. The mounting plate (132) connects the first wall (12) and the second wall (111). An isolation cavity is formed between the mounting plate (132) and the heat exchange channel (131). High-voltage electrical component (30), the high-voltage electrical component (30) is housed in the first accommodating space (141) and is disposed on the side of the mounting plate (132) away from the isolation cavity; A battery cell (20) is housed in the second housing 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 (10), and the second direction is perpendicular to the first direction and perpendicular to the thickness direction of the box (10).

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

3. The battery device of claim 1, wherein The first wall (12) is disposed 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 of claim 3, wherein The first wall (12) includes a main body (121) and a protrusion (122). The main body (121) and the second wall (111) are disposed opposite each other along the first direction. The protrusion (122) protrudes toward the first receiving space (141). The projection of the protrusion (122) toward the heat exchange channel (131) along the third direction falls onto the surface of the heat exchange channel (131). Wherein, the third direction is the thickness direction of the box (10).

5. The battery device according to any one of claims 3 to 4, characterized by, The heat exchange channel (131) is provided with a plurality of baffles (1311) extending along the second direction. The plurality of baffles (1311) divide the heat exchange channel (131) into a plurality of flow channels. Each baffle (1311) includes at least one connecting hole, which connects two adjacent flow channels.

6. The battery device according to any one of claims 3 to 4, wherein The heat exchange medium in the heat exchange channel (131) is a fluorinated liquid.

7. The battery device according to any one of claims 1 to 4, characterized by, The first wall (12) comprises a first side wall and a second side wall oppositely arranged along the first direction, the first side wall being away from the first accommodating space (141) relative to the second side wall; The battery device further comprises a plurality of battery cell assemblies arranged along a second direction, each of the battery cell assemblies comprising a plurality of battery cells (20) arranged along the first direction, at least one end of each of the battery cell assemblies along the first direction being abutted against the first side wall. The second direction is perpendicular to the first direction and perpendicular to a thickness direction of the box (10).

8. The battery device according to any one of claims 1 to 4, characterized by, The first wall (12), the second wall (111), and the support structure (13) are integrally formed.

9. The battery device according to any one of claims 1 to 4, characterized by, The frame (11) comprises two third beams oppositely arranged along the first direction, the third beams being connected with the first wall (12), the second wall (111), and the support structure (13).

10. An electric device, characterized by A battery device according to any one of claims 1 to 9, the battery device being used to provide electric energy.

Images