Battery device and electric equipment

Abstract

The utility model provides a battery device and electric equipment, the battery device comprises a box body, the box body comprises a bottom wall and side walls, the side walls are arranged around the bottom wall and define a containing cavity, and the side walls comprise first walls oppositely arranged along a first direction and second walls oppositely arranged along a second direction; the battery module is arranged in the accommodating cavity, the battery module comprises a battery monomer arrangement assembly and end plates, the battery monomer arrangement assembly comprises a plurality of battery monomers stacked in the first direction, and the end plates are arranged at the two ends, in the first direction, of the battery monomer arrangement assembly correspondingly; the battery monomer arrangement assembly and the second wall are arranged at intervals in the second direction, and a gap is formed; the buffer part is arranged in the gap, the relative position of the buffer part and at least one of the battery monomer arrangement assembly and the box body is fixed, and the orthographic projection of the buffer part in the second direction covers the plurality of battery monomers distributed in the first direction. The lateral extrusion resistance of the battery device can be effectively improved, and the reliability of the battery device is ensured.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a battery device and an electrical device. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] When a battery device in the related art is subjected to external pressure, there is a risk of short circuit between the conductive structure for connecting battery cells and connection terminals and the battery cell arrangement assembly, which affects the overall reliability of the battery device. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can effectively reduce the short circuit risk of the battery device when subjected to side extrusion force, thereby ensuring the reliability of the battery device.

[0005] In the first aspect, the present application provides a battery device, comprising: a box body, comprising a bottom wall and side walls, the side walls being arranged around the bottom wall and enclosing to form an accommodating cavity; a battery module, arranged in the accommodating cavity, the battery module comprising a battery cell arrangement assembly, an end plate and a connecting terminal, the battery cell arrangement assembly comprising a plurality of stacked battery cells, the battery cell arrangement assembly being respectively provided with end plates at both ends in a first direction, the battery cell arrangement assembly being spaced apart from the second wall in a second direction and forming a spacer cavity, and the connecting terminal being provided on the end plate; an insulating protective member, arranged in the spacer cavity and fixed relative to at least one of the battery cell arrangement assembly and the box body, a protective cavity being provided in the insulating protective member; a conductive connecting member, arranged in the protective cavity, the conductive connecting member having a first end and a second end protruding from the insulating protective member, the first end being electrically connected to the connecting terminal, and the second end being electrically connected to one of the battery cells.

[0006] The battery cell provided in one embodiment of the present application provides an overall installation space and protective shell for components such as battery modules through a box body. End plates are provided at both ends of the battery cell arrangement assembly in the battery module. This structure allows the battery cells to be arranged in an orderly and stable manner, and the end plates play a role in fixing and protecting the battery cell arrangement assembly. The battery cell arrangement assembly and the side wall of the box body are spaced apart to form a partition cavity, which provides space for the arrangement of insulating protective parts and conductive connectors. At the same time, the partition cavity can also play a certain buffering role, reducing the direct impact of external shocks on the battery module. The connecting terminal is provided on the end plate to facilitate electrical connection with the conductive connector, thereby realizing power transmission between the battery module and other components. The conductive connector has a first end and a second end protruding from the insulating protective part, which are electrically connected to the connecting terminal and the battery cell respectively, thereby realizing electrical connection between the battery module and a specific battery cell, enabling the battery device to transmit and distribute power as required, thereby ensuring the normal operation of the battery device. The insulating protective member is arranged in the partition cavity and is fixed relative to at least one of the battery cell and the box body, and can isolate the conductive connector from the battery cell and the box body. When there is an extrusion condition outside the battery device, the insulating protective member can ensure that the internal conductive connector and the battery cell are isolated, reducing the probability of insulation problems between the conductive connector and the battery cell during the extrusion process, thereby ensuring the reliability of the battery device.

[0007] In some embodiments, the conductive connector includes a main body section, a first bending section, and a second bending section. The main body section extends along a first direction and is arranged in the protective cavity. The first bending section and the second bending section are respectively located at both ends of the main body section in the first direction and are intersected with the main body section. The first bending section includes a first end section, and the second bending section includes a second end section.

[0008] The conductive connector's bending design allows it to better adapt to the spatial layout between the battery module, battery cell, and insulating protective member, achieving electrical connection within a limited compartment, and reducing the probability of space waste or interference problems caused by structural limitations. Furthermore, different bending angles and end structure designs can adapt to the position and shape of the connection terminals of various battery modules and battery cells, improving the versatility and assembly ease of the conductive connector. Furthermore, the above-mentioned structural form, while meeting the connection requirements of the connection terminals and the corresponding battery cells in the battery cell arrangement assembly, can also facilitate better deformation resistance when the battery device is subjected to external forces, reducing the risk of loose or broken connections due to vibration or extrusion, and ensuring the reliability of the electrical connection.

[0009] In some embodiments, a limiting member is provided in the protective cavity, and the conductive connecting member abuts against the limiting member on a side facing the battery cell arrangement assembly in the second direction.

[0010] The provision of a stopper facilitates contact between the stopper and the conductive connector. When the battery device is subjected to vibration or impact, the stopper can constrain the movable space of the conductive connector, preventing it from shaking internally. This prevents collision and friction between the conductive connector and the battery cell or other components caused by external forces such as vibration and compression, thereby reducing the risk of short circuits. Furthermore, the stable stopper structure ensures accurate connection between the first and second ends of the conductive connector and the connection terminals and battery cell, preventing poor contact or connection failure caused by positional deviation, and improving the reliability and stability of the electrical connection.

[0011] In some embodiments, the limiting member is provided with a slot, the slot is opened in a direction away from the bottom wall, and the conductive connecting member is provided in the slot.

[0012] By providing a slot on the retaining member, the slot structure can constrain the conductive connector in multiple directions compared to simple abutment, providing a stronger fixing force, keeping the conductive connector stable during battery device operation and effectively resisting external forces such as vibration and impact. Furthermore, this arrangement allows the battery device to be assembled by simply aligning the conductive connector with the slot and inserting it, reducing assembly difficulty and assembly precision requirements, improving production efficiency, and facilitating subsequent disassembly and maintenance.

[0013] In some embodiments, the limiting member includes a support plate and a limiting plate. The support plate is connected to the insulating protective member. The limiting plate is arranged on the support plate and protrudes from the support plate in a direction away from the bottom wall. The support plate and the limiting plate are combined to form a slot.

[0014] The position-limiting member adopts the above-mentioned structural form, which can limit the conductive connector through the position-limiting plate. Combined with the connection and fixation of the support plate, it can achieve precise positioning and all-round stable fixation of the conductive connector, effectively preventing displacement and shaking in the second direction, and ensuring the stability of the electrical connection. Moreover, compared with a single position-limiting structure, the combined structure of the support plate and position-limiting plate has higher structural strength and rigidity, can withstand greater external forces, and can still maintain effective fixation of the conductive connector when the battery device is subjected to vibration, compression, and other working conditions.

[0015] In some embodiments, the limiting member and the insulating protective member are an integrated structure.

[0016] The integrated structure reduces the number of components and assembly steps, eliminating the need for separate stoppers. This reduces assembly complexity and errors, improves production efficiency, and reduces the risk of failure due to poor assembly. Furthermore, the absence of an assembly interface eliminates the risk of stopper failure due to loose or falling interfaces. The stopper and insulation protection form a single unit, resulting in greater structural strength and stability, and enhanced protection for conductive connectors.

[0017] In some embodiments, the insulating protective member is provided separately from the box body, and the insulating protective member is connected and fixed to at least one of the box body and the battery cell arrangement assembly.

[0018] The separate insulating shield can be manufactured independently, reducing the complexity and cost of mold production. During assembly, the installation sequence and position can be flexibly adjusted according to actual needs, improving assembly convenience and production efficiency. Furthermore, this arrangement allows for direct removal and replacement of the insulating shield if it becomes damaged or requires upgrading, eliminating the need for extensive disassembly of the entire housing or battery module. This reduces maintenance costs and difficulty, and improves the maintainability of the battery assembly.

[0019] In some embodiments, the insulating protective member and the box body are an integrated structure.

[0020] This arrangement improves structural integrity and strength. The integrated structure eliminates assembly gaps and weak points between the insulating protective element and the housing, making the entire battery unit more compact and robust, enhancing its resistance to external impact and extrusion, and increasing its reliability and service life. Furthermore, the integrated structure helps improve the sealing of the battery unit, preventing dust, moisture, and other substances from entering the interior. It also makes better use of the internal space of the housing, achieving a smaller and lighter design for the battery unit.

[0021] In some embodiments, the box body includes a non-metal box body, and the non-metal box body includes a bottom wall and side walls.

[0022] By making the case comprise a non-metallic body, the non-metallic material itself is non-conductive, effectively preventing short circuits between the electrodes inside the battery device and the case, thereby improving the electrical reliability of the battery device. During use, even if abnormalities such as battery cell damage or electrolyte leakage occur, the non-metallic body can, to a certain extent, prevent current from flowing through the case, reducing the risk of safety incidents such as fires and explosions caused by short circuits. Furthermore, the use of a non-metallic body can significantly reduce the overall weight of the battery device. For applications such as electric vehicles, lightweight battery devices help increase vehicle range and reduce energy consumption. Furthermore, lightweight battery devices are more convenient to transport and install, reducing labor and material costs.

[0023] In some embodiments, the battery device further includes a heat exchange element, which is disposed in the accommodating cavity and between the bottom wall and the battery module.

[0024] Through this arrangement, the heat exchange component can quickly transfer heat generated by the battery cells to other parts, breaking the limitations of plastic or non-metallic enclosures that have limited heat dissipation. Whether dissipating heat through solid conduction, liquid circulation, or air convection, the heat exchange component effectively reduces the temperature of the battery cells, preventing overheating caused by heat accumulation. This ensures that the battery operates within an appropriate temperature range, improving its charge and discharge performance and reliability.

[0025] In some embodiments, the battery device also includes a metal component, which is arranged outside the accommodating cavity. The metal component includes a supporting member and a mounting member. The supporting member is supported on the side of the bottom wall facing away from the accommodating cavity, and the mounting member is protruding from the side of the side wall facing away from the accommodating cavity.

[0026] The above arrangement facilitates the connection of the battery device with other components of the electrical equipment through the mounting member, ensuring the mounting requirements. The supporting member can be supported on the side of the bottom wall away from the accommodating cavity, and together with the non-metallic box, it supports the battery cell, ensuring the supporting capacity of the battery cell.

[0027] In some embodiments, the non-metallic box body further includes an extension section, one end of the extension section is connected to the side wall and the other end extends away from the accommodating cavity, and the mounting member and the extension section are at least partially stacked and connected.

[0028] The above arrangement helps to ensure the connection strength requirements between the non-metallic box and the metal components, while also helping to meet the mounting requirements.

[0029] In some embodiments, the battery cell arrangement assembly includes multiple groups of battery packs distributed along the second direction, each group of battery packs includes multiple battery cells distributed along the first direction, the positive projection of the end plate in the first direction covers each battery pack, and in the second direction, an insulating protective member and a conductive connector are arranged between the outermost group of battery packs and the box body.

[0030] The battery device provided in one embodiment of the present application facilitates the arrangement and combination of multiple battery cells through the above-mentioned configuration. At the same time, it can effectively reduce the short circuit risk of the battery device when subjected to side extrusion force, thereby ensuring the reliability of the battery device.

[0031] In some embodiments, the battery cell includes a shell, an electrode assembly and an end cover assembly. The electrode assembly is arranged in the shell, and the end cover assembly is covered at the opening of the shell. The shell includes a first shell wall and a second shell wall arranged to intersect with each other. The area of ​​the first shell wall is larger than the area of ​​the second shell wall. The first shell wall is arranged toward the end plate, and the second shell wall is arranged toward the insulating protective member. Along the second direction, the insulating protective member covers the second shell wall of each battery cell of the outermost battery pack.

[0032] In a second aspect, the present application provides an electrical device comprising the above-mentioned battery device.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0035] Figure 1 is a structural schematic diagram of a vehicle provided in one embodiment of the present application;

[0036] Figure 2 is a structural diagram of a battery device provided in one embodiment of the present application;

[0037] Figure 3 This is a schematic diagram of a partial structure of a battery device provided in one embodiment of the present application;

[0038] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0039] Figure 5 This is a cross-sectional view of a partial structure of a battery device according to an embodiment of the present application;

[0040] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle;

[0041] Figure 7 This is a schematic structural diagram of the cooperation between the insulating protective member and the limiting member according to an embodiment of the present application;

[0042] Figure 8 This is a schematic structural diagram of a battery cell according to an embodiment of the present application;

[0043] Figure 9 It is a partial cross-sectional view of a battery device according to another embodiment of the present application.

[0044] Marking Description:

[0045] 1. Vehicle; 100. Battery device; 200. Motor; 300. Controller;

[0046] 10. Box body;

[0047] 11. Non-metallic box body; 111. Bottom wall; 112. Side wall; 1121. First wall; 1122. Second wall; 113. Accommodating cavity; 114. Extension section;

[0048] 12. Metal components; 121. Supporting parts; 122. Mounting parts;

[0049] 20. Battery module;

[0050] 21. Battery cell arrangement assembly;

[0051] 211. Battery pack;

[0052] 211a, battery cell; 2111, housing; 2111a, first housing wall; 2111b, second housing wall; 2112, electrode assembly; 2113, end cap assembly;

[0053] 22. End plate;

[0054] 23. Connecting terminals;

[0055] 30. Insulation protection part; 31. Protection cavity;

[0056] 40. Conductive connector; 41. Main body; 42. First bend section; 421. First end; 43. Second bend section; 431. Second end;

[0057] 50. Limiting member; 50a. Card slot; 51. Support plate; 52. Limiting plate;

[0058] 60. Heat exchange components;

[0059] 70. Upper cover;

[0060] 80, septal cavity;

[0061] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0062] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0063] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0064] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0065] In addition, the technical terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0066] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0067] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0068] 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.

[0069] With the rapid development of the new energy electric vehicle industry, market requirements for vehicle lightweighting and battery energy density are increasing year by year. In this context, the reliability of battery devices is receiving increasing attention.

[0070] In the field of new energy battery technology, battery devices are essential components of battery systems, and their internal structural design plays a key role in the safety and reliability of battery systems. In battery devices, because there is often a certain distance between the output electrodes of the battery cells corresponding to the battery module and the final output battery terminals, conductive connectors are usually required to achieve electrical connections to ensure a reasonable layout of the battery terminals.

[0071] The battery devices in the related art are at risk of short circuit when subjected to external force, especially side extrusion, which affects the reliability of the battery device itself. Studies have found that the conductive connectors of the battery devices in the related art are mostly arranged on the sides of the battery module and fixed by simple fixing methods such as bayonet and Velcro. However, when the battery device is subjected to external extrusion, this fixing method makes it easy for the conductive connector to come into direct contact with the battery cell under the action of the extrusion force. Since the conductive connectors usually carry high-voltage current, this direct contact will destroy the insulation protection of the battery device, bring serious high-voltage insulation risks, and may cause risks such as short circuit, leakage and even fire, which greatly affects the reliability of the battery device.

[0072] In order to alleviate the problem of low reliability of battery cells, the structure of the battery device can be improved, and an insulating protective part can be set on the outside of the conductive connector to isolate the conductive connector from the battery cell of the battery module. When there is an extrusion condition outside the battery device, the insulating protective part can ensure that the internal conductive connector and battery cell are isolated, reducing the probability of insulation problems between the conductive connector and the battery cell during the extrusion process, thereby ensuring the reliability of the battery device.

[0073] Based on the above considerations, in order to solve the problem of short circuit between the conductive connector and the battery cell when the battery device is subjected to external pressure, the inventors, after in-depth research, designed a battery device. The battery device includes a housing, a battery module, an insulating protective member, and a conductive connector. The housing includes a bottom wall and side walls. The side walls are arranged around the bottom wall and enclose a storage cavity. The battery module is disposed in the storage cavity. The battery module includes a battery cell arrangement assembly, an end plate, and a connection terminal. The battery cell arrangement assembly includes a plurality of stacked battery cells. The battery cell arrangement assembly is provided with end plates at both ends of the battery cell arrangement assembly in a first direction. The battery cell arrangement assembly is spaced apart from the housing in a second direction to form a spacer cavity. The connection terminal is provided on the end plate. The insulating protective member is disposed in the spacer cavity and fixed relative to at least one of the battery cell arrangement assembly and the housing. A protective cavity is provided within the insulating protective member. The conductive connector is disposed in the protective cavity. The conductive connector has a first end protruding from the insulating protective member and a second end. The first end is electrically connected to the connection terminal, and the second end is electrically connected to one of the battery cells.

[0074] In such a battery device, the box body provides an overall installation space and protective shell for components such as the battery module. End plates are provided at both ends of the battery cell arrangement assembly in the battery module. This structure allows the battery cells to be arranged in an orderly and stable manner, and the end plates play a role in fixing and protecting the battery cell arrangement assembly. The battery cell arrangement assembly and the side wall of the box body are spaced apart to form a partition cavity, which provides space for the arrangement of insulating protective parts and conductive connectors. At the same time, the partition cavity can also play a certain buffering role, reducing the direct impact of external shocks on the battery module. The connecting terminal is provided on the end plate to facilitate electrical connection with the conductive connector, thereby realizing power transmission between the battery module and other components. The conductive connector has a first end and a second end protruding from the insulating protective part, which are electrically connected to the connecting terminal and the battery cell respectively, thereby realizing electrical connection between the battery module and a specific battery cell, enabling the battery device to transmit and distribute power as required, and ensuring the normal operation of the battery device. The insulating shield is positioned within the compartment and fixed relative to at least one of the battery cell and the housing. This shield isolates the conductive connector from the battery cell and the housing. When the battery device is subjected to external compression, the insulating shield ensures that the conductive connector and battery cell remain separate, reducing the likelihood of insulation problems between the conductive connector and the battery cell during compression and ensuring the reliability of the battery device. Furthermore, the structural rigidity of the conductive connector further enhances resistance to lateral compression.

[0075] The technical solutions described in the embodiments of the present application are applicable to power-consuming devices or energy storage devices using battery devices.

[0076] The energy storage device includes one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices 100, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device. The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. The energy storage device can store electrical energy as needed and output it at the appropriate time. For example, the energy storage device can store electrical energy during low-consumption periods and provide electrical energy to relevant users or electrical equipment during peak usage periods.

[0077] Electrical devices may include vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may include fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles may include 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 electric tools, grinding electric tools, assembly electric tools, and railway electric 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 devices.

[0078] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery device 100 and energy storage device described above. For the sake of simplicity, the following embodiments are described using the electric vehicle 1 as an example.

[0079] For example, Figure 1 As shown, the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 200, a controller 300 and a battery device 100 can be provided inside the vehicle 1, and the controller 300 is used to control the battery device 100 to power the motor 200. For example, the battery device 100 can be provided at the bottom, front or rear of the vehicle 1. The battery device 100 can be used to power the vehicle 1, for example, the battery device 100 can be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements of the vehicle 1 during startup, navigation and operation. In another embodiment of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0080] It should be understood that the technical solutions described in the embodiments of the present application are not limited to being applicable to the above-mentioned vehicle 1, but can also be applied to energy storage devices.

[0081] like Figures 2 to 8 As shown, to meet different power requirements, the battery device 100 may include a housing 10, a battery module 20, an insulating protective member 30, and a conductive connector 40. The housing 10 includes a bottom wall 111 and side walls 112. The side walls 112 surround the bottom wall 111 and enclose a housing cavity 113. The battery module 20 is disposed in the housing cavity 113. The battery module 20 includes a battery cell arrangement assembly 21, end plates 22, and connection terminals 23. The battery cell arrangement assembly 21 is provided with end plates 22 at both ends in a first direction X. The battery cell arrangement assembly 21 is spaced apart from the housing 10 in a second direction Y, forming a spacer cavity 80. The connection terminals 23 are provided on the end plates 22. The insulating protective member 30 is disposed in the spacer cavity 80 and fixed relative to at least one of the battery cells 211a and the housing 10. A protective cavity 31 is provided within the insulating protective member 30. The conductive connector 40 is disposed in the protective cavity 31 and has a first end 421 and a second end 431 protruding from the insulating protective member 30 . The first end 421 is electrically connected to the connection terminal 23 , and the second end 431 is electrically connected to one of the battery cells 211 a .

[0082] The housing 10 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as rectangular parallelepiped, cylinder, or sphere, and the present embodiment is not limited thereto. The housing 10 may be made of an alloy material such as an aluminum alloy or an iron alloy, or a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin, and the present embodiment is not limited thereto.

[0083] The housing 10 is used to house the battery module 20 and can have various structures. Optionally, the battery device 100 can also include a top cover 70. The top cover 70 and the housing 10 cover each other, protecting the battery module 20 and reducing the risk of environmental corrosion to the battery cells 211a. The top cover 70 can be a plate-like structure or a hollow structure with one side open. The protective structure formed by the housing 10 and the top cover 70 can have various shapes, such as a rectangular parallelepiped or a cube.

[0084] The first direction X may be understood as the length direction of the battery device 100 , and the second direction Y may be understood as the width direction of the battery device 100 .

[0085] Optionally, the side wall 112 of the box body 10 may include a first wall 1121 arranged opposite to each other along the first direction X and a second wall 1122 arranged opposite to each other along the second direction. The first wall 1121 and the second wall 1122 may be alternately arranged around the bottom wall 111. The first wall 1121, the second wall 1122 and the bottom wall 111 may adopt an integrated structure, or may be connected and fixed by bonding, welding, or the like.

[0086] The battery module 20 is disposed in the housing 113 of the casing 10. Its battery cell arrangement assembly 21 may collectively refer to all battery cells 211a included in the battery module 20. The battery cell arrangement assembly 21 may include multiple battery cells 211a. If there are multiple battery cells 211a, the multiple battery cells 211a may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to multiple battery cells 211a being connected in both series and parallel. Multiple battery cells 211a may be directly connected in series, in parallel, or in a hybrid configuration, and then the assembly formed by the multiple battery cells 211a is mated to the end plate 22.

[0087] The battery cell arrangement assembly 21 comprises multiple battery cells 211a arranged in a specific manner, such as a linear arrangement or a matrix arrangement. Electrical connectivity is achieved between the battery cells 211a through welding (e.g., ultrasonic welding), conductive adhesive bonding, or bolt connections. Insulation is achieved between the battery cells 211a using insulating spacers, insulating tape, and the like.

[0088] The end plates 22 are arranged at both ends of the battery cell arrangement assembly 21 in the first direction X (which can be defined as the length direction of the battery module 20). The material can include metal (such as stainless steel) or insulating material (such as phenolic resin). The surface is provided with positioning grooves, clips or bolt holes for fixing the battery cell arrangement assembly 21, as well as mounting positions for installing the connection terminals 23.

[0089] The connection terminal 23 serves as the output electrode of the battery module 20. It can be made of metal materials such as copper or aluminum. The surface can be tin-plated, nickel-plated, etc. for anti-oxidation treatment. It is fixed to the surface of the end plate 22 by welding, crimping or bolting, and is used to achieve electrical connection with an external circuit or other modules.

[0090] The battery cell arrangement assembly 21 is secured by end plates 22, which are secured to the battery cell arrangement assembly 21 by means of clips inserted into positioning slots, bolts threaded through mounting holes, or adhesive bonding. Connecting terminals 23 are secured to the end plates 22 and electrically connected to conductive structures within the battery cell arrangement assembly 21, such as the busbars connecting the battery cells 211a. The battery module 20 is entirely mounted within the accommodating cavity 113 of the housing 10. The battery cell arrangement assembly 21 is spaced apart from the sidewall 112 in a second direction Y (which can be defined as a direction perpendicular to the first direction X and parallel to the sidewall 112), forming a spacer cavity 80.

[0091] The battery cell 211 a may be a secondary battery. A secondary battery refers to a battery cell 211 a that can be continuously used by activating active materials by charging after the battery cell 211 a is discharged.

[0092] The battery cell 211a 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 metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in this embodiment of the present application.

[0093] Battery cell 211a may include an outer shell and an electrode assembly 2112. The outer shell may be a steel shell, an aluminum shell, a plastic shell (e.g., polypropylene), a composite metal shell (e.g., a copper-aluminum composite shell), or an aluminum-plastic film. In some embodiments, the outer shell protects the electrode assembly 2112. A sealing bag is provided between the outer shell and the electrode assembly 2112 to encapsulate the electrode assembly 2112 and the electrolyte. Specifically, the sealing bag may be a bag-shaped buffer or an aluminum-plastic film. When the outer shell is a sealed structure, it encapsulates the electrode assembly 2112, the electrolyte, and other components.

[0094] As an example, the battery cell 211a can be a cylindrical battery cell 211a, a prismatic battery cell 211a, a soft-pack battery cell 211a or a battery cell 211a of other shapes. The prismatic battery cell 211a includes a square-shell battery cell 211a, a blade-shaped battery cell 211a, a polygonal battery, and the polygonal battery is, for example, a hexagonal battery, etc. There is no special limitation in this application.

[0095] A partition cavity 80 may be formed between the battery module 20 and one of the second walls 1122 of the battery cells. Accordingly, the number of the conductive connector 40 and the number of the insulating protective member 30 may both be one and disposed in the partition cavity 80 .

[0096] The insulating protective member 30 may include an independent component disposed within the compartment 80 or a structure integrally formed with the housing 10. The insulating protective member 30 may include an insulating material body, such as a fiber-reinforced composite material, which has good insulation properties and high bending stiffness (bending modulus ≥ GPa). The matrix resin may include a thermosetting resin such as epoxy or polyurethane, or may include thermoplastic PP, PA, etc. The fiber may include glass fiber, aramid fiber, or carbon fiber, etc. A protective cavity 31 is provided inside for accommodating the conductive connector 40. The shape of the protective cavity 31 can be designed to be an elongated strip, U-shaped, or other suitable shape according to the outer shape of the conductive connector 40. The inner wall may be provided with a slot 50a, groove, or protrusion for positioning the conductive connector 40.

[0097] The insulating protective member 30 can be connected and fixed to the outer battery cells 211a of the battery cell arrangement assembly 21 by bonding or other methods. At this time, the insulating protective member 30 and the box body 10 can be in contact with each other or a gap can be formed between them.

[0098] Of course, in some examples, the insulating protective member 30 can also be fixed to the housing 10 by providing positioning posts on the side wall 112 and corresponding positioning holes on the insulating protective member 30. During installation, the positioning posts are inserted into the positioning holes to achieve positioning, and then fixed with glue or small bolts. Alternatively, the insulating protective member 30 and the housing 10 can be integrally formed, and the fixed structure can be directly formed through mold design. The conductive connector 40 is disposed in the protective cavity 31, contacting the inner wall of the protective cavity 31 or being limited by the slot 50a.

[0099] The conductive connector 40 includes a metal conductor, such as a copper bar, an aluminum bar, etc., and has a first end 421 and a second end 431. The overall shape can be designed to be linear, L-shaped, U-shaped, etc. according to the positional relationship between the connecting terminal 23 and the battery cell 211a corresponding to the battery module 20.

[0100] Its first end 421 can be electrically connected to the connection terminal 23 of the battery module 20 by welding (such as argon arc welding), bolt connection (with a conductive gasket) or crimping; the second end 431 can be electrically connected to the electrode (positive or negative) of one of the battery cells 211a by welding, bolt connection, etc.; the conductive connector 40 is inserted into the protective cavity 31 of the insulating protective component 30.

[0101] The connection terminals 23 are interfaces for connecting the battery module 20 to external circuits or devices. Connecting the corresponding battery cells 211a to the connection terminals via the conductive connectors 40 enables the connection of multiple battery cells 211a in series or parallel. Furthermore, this facilitates power transmission and signal exchange between the battery module and other components.

[0102] In a battery device 100 provided by one embodiment of the present application, the housing 10 provides an overall installation space and protective shell for components such as a battery module 20. End plates 22 are provided at both ends of the battery cell arrangement assembly 21 in the battery module 20. This structure allows the battery cells 211a to be arranged in an orderly and stable manner, and the end plates 22 play a role in fixing and protecting the battery cell arrangement assembly 21. The battery cell arrangement assembly 21 is spaced apart from the side wall 112 of the housing 10 to form a partition cavity 80, which provides space for the arrangement of the insulating protective member 30 and the conductive connector 40. At the same time, the partition cavity 80 can also play a certain buffering role, reducing the direct impact of external shocks on the battery module 20. The connection terminal 23 is provided on the end plate 22 to facilitate electrical connection with the conductive connector 40. The conductive connector 40 has a first end 421 and a second end 431 that protrude from the insulating protective member 30. These are electrically connected to the connection terminal 23 and the battery cell 211a, respectively. This establishes an electrical connection between the battery module 20 and a specific battery cell 211a, enabling the battery device 100 to transmit and distribute power as required and ensuring proper operation of the battery device 100. The insulating protective member 30 is disposed within the compartment 80 and fixed relative to at least one of the battery cell 211a and the housing 10. This isolates the conductive connector 40 from the battery cell 211a and the housing 10. When the battery device 100 is subjected to external compression, the insulating protective member 30 ensures that the conductive connector 40 is isolated from the battery cell 211a, reducing the likelihood of insulation problems between the conductive connector 40 and the battery cell 211a during compression and ensuring the reliability of the battery device 100. Furthermore, the structural rigidity of the conductive connector 40 further enhances its resistance to lateral compression.

[0103] Continue to see Figures 2 to 8 As shown, in some embodiments, the conductive connector 40 includes a main body section 41, a first bending section 42 and a second bending section 43. The main body section 41 extends along the first direction X and is arranged in the protective cavity 31. The first bending section 42 and the second bending section 43 are respectively located at the two ends of the main body section 41 in the first direction X and are intersected with the main body section 41. The first bending section 42 includes a first end 421, and the second bending section 43 includes a second end 431.

[0104] The main section 41 can extend along the first direction X and is located in the protective cavity 31 of the insulating protective member 30. As the main conductive part, its cross-sectional shape can be rectangular, circular, or irregular, and its material is generally conductive metal such as copper and aluminum. The first bending section 42 and the second bending section 43 are respectively located at the two ends of the main section 41 in the first direction X, and intersect with the main section 41 to form a bending structure. The first bending section 42 includes a first end 421 electrically connected to the connection terminal 23 of the battery module 20, and the second bending section 43 includes a second end 431 electrically connected to the battery cell 211a. The bending angle can be designed according to the actual spatial layout, such as degrees, degrees, etc. The first end 421 and the second end 431 can be provided with holes, protrusions, planes and other structures for connection.

[0105] The main body section 41 is located in the protective cavity 31 and can have a certain gap or be tightly fitted with the inner wall of the protective cavity 31 in the second direction Y; the first bending section 42 can be bent toward the end plate 22 of the battery module 20, so that the first end 421 can be electrically connected to the connecting terminal 23 on the end plate 22; the second bending section 43 can be bent toward the battery cell 211a, so that the second end 431 is electrically connected to the electrode of a specific battery cell 211a.

[0106] In a battery device 100 provided by one embodiment of the present application, the conductive connector 40 is designed to be bent so that the conductive connector 40 can better adapt to the spatial layout between the battery module 20, the battery cell 211a and the insulating protective member 30, and realize electrical connection within the limited compartment 80, thereby reducing the probability of space waste or interference problems caused by structural limitations. In addition, different bending angles and end structure designs can adapt to the position and shape of the connection terminals 23 of various battery modules 20 and battery cells 211a, thereby improving the versatility and assembly convenience of the conductive connector 40. In addition, the above-mentioned structural form, on the basis of meeting the connection requirements between the connection terminal 23 and the corresponding battery cell 211a in the battery cell arrangement assembly 21, can also facilitate better deformation resistance when the battery device 100 is subjected to external force, reduce the risk of loose connection or breakage due to vibration or extrusion, and ensure the reliability of the electrical connection.

[0107] Continue to see Figures 2 to 8 As shown, in some embodiments, a limiting member 50 is disposed in the protective cavity 31 , and the conductive connecting member 40 abuts against the limiting member 50 on a side facing the battery cell arrangement assembly 21 in the second direction Y.

[0108] The limiting member 50 can be made of insulating plastic, rubber, or the same material as the insulating protective member 30. Its shape and structure are designed according to the appearance of the conductive connector 40 and are used to limit the conductive connector 40 in the second direction Y. It can be in the shape of a block, strip, or other suitable shape, and its surface can be provided with a flat surface, protrusions, or grooves for abutting the conductive connector 40.

[0109] The conductive connector 40 may abut against the limiting member 50 on one side of the battery cell arrangement assembly 21 in the second direction Y, thereby limiting the movement of the conductive connector 40 in this direction through the abutting force. The abutting manner may be surface contact, line contact, or point contact.

[0110] The battery device 100 provided in one embodiment of the present application, by providing a stopper 50, can facilitate the contact between the stopper 50 and the conductive connector 40. When the battery device 100 is subjected to vibration or impact, the stopper 50 can restrict the movable space of the conductive connector 40, preventing the conductive connector 40 from shaking internally, thereby preventing the conductive connector 40 from colliding or rubbing with the battery cell 211a or other components due to external forces such as vibration and extrusion, thereby reducing the risk of short circuits. In addition, the stable stopper structure ensures that the first end 421 and the second end 431 of the conductive connector 40 are accurately connected to the connection terminal 23 and the battery cell 211a, preventing poor contact or connection failure caused by positional offset, and improving the reliability and stability of the electrical connection.

[0111] Continue to see Figures 2 to 8 As shown, in some embodiments, the limiting member 50 is provided with a slot 50 a , the slot 50 a is opened in a direction away from the bottom wall 111 , and the conductive connecting member 40 is disposed in the slot 50 a .

[0112] The shape of the slot 50a is adapted to the outer shape of the conductive connector 40. For example, when the conductive connector 40 has a rectangular cross-section, the slot 50a can be a rectangular slot or an L-shaped slot. When the conductive connector 40 has a circular cross-section, the slot 50a can be a semicircular slot. The depth and width of the slot 50a are designed according to the size of the conductive connector 40 to ensure that the conductive connector 40 can be securely embedded in the slot 50a.

[0113] The opening direction of the slot 50 a may be a third direction Z perpendicular to the first direction X and the second direction Y, which may also be understood as the height direction of the battery device 100 .

[0114] The conductive connector 40 is disposed in the slot 50 a , and the inner wall of the slot 50 a limits the conductive connector 40 in multiple directions, restricting its movement and rotation, thereby achieving a more stable fixing effect.

[0115] The battery device 100 provided in one embodiment of the present application features a retaining member 50 provided with a slot 50a. Compared to a simple abutment structure, the slot 50a can constrain the conductive connector 40 in multiple directions, providing a stronger fixing force, thereby ensuring that the conductive connector 40 remains stable during operation of the battery device 100 and effectively resisting external forces such as vibration and impact. Furthermore, the above arrangement allows the battery device 100 to be assembled by simply aligning the conductive connector 40 with the slot 50a, inserting it, and then bending it to form the first and second ends. This reduces the difficulty of assembly and the requirements for assembly precision, improves production efficiency, and also facilitates subsequent disassembly and maintenance.

[0116] Continue to see Figures 2 to 8 As shown, in some embodiments, the limiting member 50 includes a support plate 51 and a limiting plate 52. The support plate 51 is connected to the insulating protective member 30. The limiting plate 52 is arranged on the support plate 51 and protrudes from the support plate 51 in a direction away from the bottom wall 111. The support plate 51 and the limiting plate 52 are combined to form a slot 50a. The conductive connector 40 can be located between the support plate 51 and the insulating protective member 30.

[0117] The limiting member 50 may optionally include a plate-like structure extending along the first direction X. The protective cavity 31 in the limiting member 50 may optionally match the shape of the limiting member 50 , for example, may be a rectangular cavity.

[0118] The support plate 51 is used to connect to the insulating protective member 30 and can be fixed by bonding, welding or snap connection. Its shape and size are designed according to the appearance and installation requirements of the conductive connector 40. The limiting plate 52 is provided on the support plate 51, protruding from the support plate 51 in a direction away from the bottom wall 111, and enclosing with the support plate 51 to form a card slot 50a. The number, shape and spacing of the limiting plates 52 are determined according to the size and fixing requirements of the conductive connector 40. Optionally, the number of support plates can be one, two or more, for example, two straight plates spaced and arranged parallel to each other along the second direction Y, or curved plates, etc.

[0119] The conductive connector 40 is located between the pair of limiting plates 52 and is surrounded by the card slot 50a. The support plate 51 can support the conductive connector 40 in the third direction Z. The limiting plates 52 can limit the conductive connector 40 from both sides to ensure its stability in the card slot 50a.

[0120] In a battery device 100 provided in one embodiment of the present application, the position-limiting member 50 adopts the aforementioned structural form, capable of limiting the conductive connector 40 via the position-limiting plate 52. Combined with the connection and fixation of the support plate 51, this allows for precise positioning and all-around stable fixation of the conductive connector 40, effectively preventing displacement and shaking in the second direction Y and ensuring the stability of the electrical connection. Furthermore, the combined structure of the support plate 51 and the position-limiting plate 52 has greater structural strength and rigidity than a single position-limiting structure, and can withstand greater external forces. This allows the conductive connector 40 to remain effectively fixed even when the battery device 100 is subjected to vibration, compression, and other operating conditions.

[0121] Continue to see Figures 2 to 8 As shown, in some embodiments, the limiting member 50 and the insulating protective member 30 are an integrated structure.

[0122] The stopper 50 and the insulating protective member 30 can be manufactured using a single-piece molding process (e.g., injection molding or compression molding), eliminating a noticeable assembly interface between the stopper 50 and the insulating protective member 30. The stopper 50 and the insulating protective member 30 can be made of the same insulating material. Optionally, the stopper 50 can be integrally connected to the insulating protective member 30 via its stopper plate 52.

[0123] The battery device 100 provided in one embodiment of the present application features an integrated structure that reduces the number of components and assembly steps. This eliminates the need for a separate retaining member 50, reduces assembly complexity and assembly errors, improves production efficiency, and reduces the risk of failure due to improper component assembly. Furthermore, the absence of an assembly interface eliminates the risk of retaining failure due to loose or detached interfaces. The retaining member 50 and the insulating protective member 30 form a single unit, providing greater structural strength and stability, and enhancing the protective effect on the conductive connector 40.

[0124] During specific assembly, the metal plate used to form the conductive connector 40 can be aligned with the slot 50 a and inserted, and then bent to form the first end and the second end.

[0125] Continue to see Figures 2 to 8 As shown, in some embodiments, the insulating protective member 30 is provided separately from the box body 10 , and the insulating protective member 30 is connected and fixed to at least one of the box body 10 and the battery cell arrangement assembly 21 .

[0126] The insulating protective member 30 is provided separately from the housing 10, that is, it is a component independent of the housing 10. Its shape and size are designed based on the space of the partition cavity 80 and the installation requirements of the conductive connector 40. The insulating protective member 30 may be provided with structures for connecting and fixing to the housing 10 or the battery cell arrangement assembly 21, such as clips, bolt holes, adhesive surfaces, etc.

[0127] The insulating protective member 30 is connected and fixed to at least one of the box body 10 and the battery cell arrangement assembly 21 by snap-fitting, bolting, gluing, etc., to ensure that its position in the compartment 80 is stable.

[0128] In one embodiment of the present application, the battery device 100 provided by the present invention has a separately mounted insulating protective member 30 that can be manufactured independently, reducing the complexity and cost of the production mold. During assembly, the installation sequence and position can be flexibly adjusted according to actual needs, thereby improving assembly convenience and production efficiency. Furthermore, this arrangement allows the insulating protective member 30 to be directly removed and replaced if damaged or requires upgrading, eliminating the need for large-scale disassembly of the entire housing 10 or battery module 20. This reduces maintenance costs and difficulty, and improves the maintainability of the battery device 100.

[0129] like Figure 9 As shown, in some embodiments, the insulating protective member 30 and the box body 10 are an integrated structure.

[0130] The insulating shield 30 is integrally formed with the housing 10, manufactured through a single-piece molding process (such as injection molding or die-casting). This process forms an integral part of the sidewall 112 of the housing 10, with no discernible interface between the two. The shield cavity 31 and internal retaining structure (if any) of the insulating shield 30 are integrally molded with the housing 10. Materials compatible with the housing 10 include insulating engineering plastics, composite materials, and other materials.

[0131] Optionally, the insulating protective member 30 may include a protective plate, which is connected to the side wall of the box body through a connecting plate or other structure to form a whole, and a protective cavity 31 is formed on the side of the insulating protective member 30 facing the box body 10. A limiter 50 may also be provided in the protective cavity 31, and a card slot 50a may be provided on the limiter 50. For details, see Figure 9 The structural form shown can also meet the limitation requirements for the conductive connector.

[0132] The battery device 100 provided in one embodiment of the present application, through the above-described configuration, can improve structural integrity and strength. The integrated structure eliminates assembly gaps and weak connection points between the insulating protective member 30 and the housing 10, making the entire battery device 100 more compact and robust, enhancing its resistance to external impact and extrusion, and improving the reliability and service life of the battery device 100. Furthermore, the integrated structure helps improve the sealing performance of the battery device 100, preventing dust, moisture, and the like from entering the interior, while more fully utilizing the internal space of the housing 10, achieving a miniaturized and lightweight design for the battery device 100.

[0133] Continue reading Figures 2 to 9As shown, in some embodiments, the box body 10 includes a non-metal box body 11 , and the non-metal box body 11 includes a bottom wall 111 and a side wall 112 .

[0134] The non-metallic box body 11 can be made of polymer materials, including plastic materials such as polypropylene (PP), polyethylene (PE), and polycarbonate (PC). These materials have excellent molding and processing properties and can be formed into various complex box body 10 structures through processes such as injection molding and blow molding. Composite materials can also be made, including fiber-reinforced composite materials such as glass fiber reinforced plastic (GFRP) and carbon fiber reinforced plastic (CFRP). These materials combine the high strength of fibers with the moldability of the matrix material, resulting in high specific strength and high specific modulus.

[0135] The non-metal box body 11 can be formed as a whole by integral injection molding.

[0136] The upper cover 70 can be connected and fixed to the non-metal box body 11 .

[0137] The battery device 100 provided in one embodiment of the present application has a non-metallic box body 11 as the box body 10 includes. The non-metallic material itself is non-conductive, which can effectively prevent short circuits between the battery cells 211a inside the battery device 100 and the box body 10, thereby improving the electrical reliability of the battery device 100. During the use of the battery device 100, even if abnormal conditions such as damage to the battery cells 211a or electrolyte leakage occur, the non-metallic box body 11 can prevent current from being conducted through the box body 10 to a certain extent, reducing the risk of safety accidents such as fire and explosion caused by short circuits. In addition, the use of the non-metallic box body 11 can significantly reduce the overall weight of the battery device 100. For application scenarios such as electric vehicles, the lightweight battery device 100 helps to increase the cruising range of the vehicle 1 and reduce energy consumption. At the same time, the lightweight battery device 100 is more convenient during transportation and installation, which can reduce manpower and material costs.

[0138] Continue reading Figures 2 to 9 As shown, in some embodiments, the battery device 100 further includes a heat exchange element 60 . The heat exchange element 60 is disposed in the accommodating cavity 113 , and the heat exchange element 60 is disposed between the bottom wall 111 and the battery module 20 .

[0139] The shape of the heat exchange element 60 can be flexibly designed according to the spatial layout of the battery module 20 and the bottom wall 111 of the box 10. It can optionally include a flat plate heat exchanger, which has a simple structure, is easy to install, and can fit evenly between the bottom wall 111 and the battery module 20; it can also include a serpentine-shaped heat exchanger.

[0140] The interior of the heat exchange element 60 may be designed as a hollow structure, filled with cooling liquid channels, and heat is removed through liquid circulation. This form has high heat dissipation efficiency and is suitable for high-power battery devices 100.

[0141] Optionally, to further enhance heat exchange performance, the surface of the heat exchange element 60 may be subjected to special treatments. For example, anodizing can be used to form a porous oxide film on the aluminum alloy surface, increasing the surface area and improving corrosion resistance. Surface coatings such as silver plating or nickel plating can also be used to reduce surface thermal resistance and improve heat transfer efficiency. Alternatively, a high-thermal-conductivity coating, such as graphene thermal conductive coating, can be applied to enhance surface heat transfer capabilities.

[0142] The heat exchange element 60 can be fixed between the bottom wall 111 of the box 10 and the battery module 20 by a highly thermally conductive adhesive, such as silicone thermal adhesive, which has good insulation and temperature resistance, ensuring firm fixation without affecting heat conduction.

[0143] Of course, a snap-fit ​​structure may also be provided on the heat exchange component 60, the bottom wall 111 of the box body 10 or the battery module 20 to enable quick installation and removal through the snap-fit, thereby facilitating maintenance and replacement and avoiding aging problems that may be caused by adhesives.

[0144] In a battery device 100 provided in one embodiment of the present application, a heat exchange element 60 can rapidly transfer heat generated by the battery cells 211a to other parts, overcoming the limitations of the plastic or non-metallic housing 10 in terms of poor heat dissipation. Whether removing heat through solid heat conduction, liquid circulation, or air convection, the heat exchange element 60 effectively reduces the temperature of the battery cells 211a, preventing battery overheating due to heat accumulation, ensuring that the battery operates within a suitable temperature range, and improving the battery's charge and discharge performance and reliability.

[0145] Continue reading Figures 2 to 9 As shown, in some embodiments, the battery device 100 also includes a metal component 12, which is arranged outside the accommodating cavity 113. The metal component 12 includes a supporting member 121 and a mounting member 122. The supporting member 121 is supported on the side of the bottom wall 111 away from the accommodating cavity 113, and the mounting member 122 is protruding from the side of the side wall 112 away from the accommodating cavity 113.

[0146] The supporting member 121 and the mounting member 122 of the metal component 12 can be directly connected or indirectly connected through other transition pieces. The supporting member 121 and the mounting member 122 can be formed by at least one of extruded profiles, sheet metal stamping and welding, etc.

[0147] The support member 121 is supported on the side of the bottom wall 111 facing away from the accommodating cavity 113, which can be understood as follows: the orthographic projection of the support member 121 on the bottom wall 111 can cover at least a portion of the bottom wall 111. In the first direction X, the weight of the non-metallic box 10 and its internal components, such as the battery cells 211a, can act on the support member 121, providing support and bearing capacity.

[0148] The support member 121 and the outer surface of the bottom wall 111 can be bonded to form a continuous support surface, evenly transferring the weight of the battery cell 211a to the external structure. The support member 121 includes but is not limited to a support plate, a support beam and other load-bearing structures.

[0149] The mounting part 122 is used to connect with a target device such as a chassis of the vehicle 1 or other structures. The mounting part 122 may be provided with a mounting position, which includes but is not limited to a mounting sleeve, a hook or other structural forms.

[0150] The mounting member 122 is protruding from the side of the side wall 112 away from the accommodating cavity 113 , which can be understood as follows: the mounting member 122 is disposed on the outer side of the side wall 112 away from the accommodating cavity 113 .

[0151] The mounting member 122 may extend outward from a side of the sidewall 112 away from the receiving cavity 113 to form a physical connection point, so that the battery device 100 can be stably installed on the target device.

[0152] The battery device 100 provided in one embodiment of the present application, through the above-described arrangement, facilitates connection of the battery device 100 with other components of an electrical device via the mounting member 122, thereby ensuring mounting requirements. The supporting member 121 can be supported on the side of the bottom wall 111 facing away from the accommodating cavity 113, and together with the non-metallic housing 10, supports the battery cell 211a, ensuring the supporting capacity of the battery cell 211a.

[0153] Continue reading Figures 2 to 9 As shown, in some embodiments, the non-metallic box body 11 further includes an extension section 114, one end of the extension section 114 is connected to the side wall 112 and the other end extends away from the accommodating cavity 113, and the mounting member 122 and the extension section 114 are at least partially stacked and connected.

[0154] The extension section 114 and the side wall 112 may be connected by bonding or an integral structure, and an integral structure may be selected.

[0155] Along the third direction Z, or in other words, along the height direction of the battery device 100 , the orthographic projection of the extension section 114 and the orthographic projection of the mounting component 122 may at least partially overlap.

[0156] A locking nut may be embedded in one of the mounting member 122 and the extension section 114. A blind hole may be provided in the other of the mounting member 122 and the extension section 114, and the locking nut may be embedded in the blind hole.

[0157] The screw rod may be provided with an end cap, which is inserted into the corresponding insertion hole and threadedly connected to the locking nut. The end cap of the screw rod may abut against the side of the metal component 12 facing away from the non-metallic box body 10 .

[0158] When the locking nut is embedded in the extension section 114 , a plug-in hole may be provided in a corresponding area of ​​the mounting member 122 .

[0159] The battery device 100 provided in one embodiment of the present application, through the above-mentioned configuration, helps to ensure the connection strength requirements between the non-metallic box 10 and the metal component 12, while also helping to meet the mounting requirements.

[0160] Continue reading Figures 2 to 9 As shown, in some embodiments, the battery cell 211a arrangement group includes multiple battery groups 211 distributed along the second direction Y, each battery group 211 includes multiple battery cells 211a distributed along the first direction X, and the orthographic projection of the end plate 22 in the first direction X covers each battery group 211. In the second direction Y, an insulating protective member 30 and a conductive connector 40 are arranged between the outermost group of battery groups 211 and the box body 10.

[0161] The number of battery packs 211 may be two, three, or more.

[0162] The number of battery cells 211 a included in each battery pack 211 may be the same and may be arranged in a one-to-one correspondence in the second direction Y. Optionally, a binding strap may be provided corresponding to each battery pack 211 .

[0163] In the second direction Y, an insulating protective member 30 and a conductive connector 40 are respectively provided between the outermost battery pack 211 and the corresponding second wall 1122. The orthographic projection of the insulating protective member 30 in the second direction Y can cover each battery cell 211a of the battery pack 211 on the corresponding side.

[0164] The battery device 100 provided in one embodiment of the present application facilitates the arrangement and combination of multiple battery cells 211 a through the above configuration, and can effectively reduce the short circuit risk of the battery device 100 when subjected to lateral extrusion force, thereby ensuring the reliability of the battery device 100.

[0165] Continue reading Figures 2 to 9As shown, in some embodiments, the battery cell 211a includes a shell 2111, an electrode assembly 2112 and an end cover assembly 2113, the electrode assembly 2112 is arranged in the shell 2111, and the end cover assembly 2113 is covered at the opening of the shell 2111, and the shell 2111 includes a first shell wall 2111a and a second shell wall 2111b arranged to intersect, the area of ​​the first shell wall 2111a is larger than the area of ​​the second shell wall 2111b, the first shell wall 2111a is arranged toward the end plate 22, and the second shell wall 2111b is arranged toward the insulating protective member 30, and along the second direction Y, the insulating protective member 30 covers the second shell wall 2111b of each battery cell 211a of the outermost battery group 211.

[0166] The first shell wall 2111 a may correspond to a wall surface in a large-surface direction of the battery cell 211 a or a wall surface in an expansion direction of the battery cell 211 a .

[0167] The battery cell 211a provided in one embodiment of the present application facilitates at least partial absorption of the lateral extrusion force exerted on the first wall 1121 by the end plate 22, thereby reducing damage to the battery cell 211a due to the lateral extrusion force exerted in the first direction X. Furthermore, when a side surface of the battery device 100, such as the second wall 1122, is compressed, the insulating protective member 30 can ensure that the internal conductive connector 40 is isolated from the battery cell 211a, reducing the probability of insulation problems between the conductive connector 40 and the battery cell 211a during compression, thereby ensuring the reliability of the battery device 100.

[0168] A battery device 100 provided in one embodiment of the present application includes a housing 10, a battery module 20, an insulating protective member 30, and a conductive connector 40. The housing 10 includes a non-metallic housing body 11 and a metal component 12. The non-metallic housing body 11 includes a bottom wall 111 and side walls 112. The side walls 112 are arranged around the bottom wall 111 and enclose a receiving cavity 113. The side walls 112 include a first wall 1121 arranged opposite to each other along a first direction X and a second wall 1122 arranged opposite to each other along a second direction Y. The first wall 1121 and the second wall 1122 intersect and are respectively connected to the bottom wall 111. The metal component 12 is arranged outside the receiving cavity 113 and includes a supporting member 121 and a mounting member 122. The supporting member 121 is supported on the side of the bottom wall 111 facing away from the receiving cavity 113, and the mounting member 122 is arranged protruding from the side of the side wall 112 facing away from the receiving cavity 113. The battery module 20 is disposed in the accommodating cavity 113. The battery cell arrangement assembly 21 includes four battery groups 211 distributed along the second direction Y. Each battery group 211 includes a plurality of battery cells 211a distributed along the first direction X. The orthographic projection of the end plate 22 in the first direction X covers each battery group 211. In the second direction Y, a spacer cavity 80 is formed between the outermost battery group 211 and the second wall 1122 corresponding to the box body 10. The conductive connector 40 and the insulating protective member 30 are disposed in the spacer cavity 80. The battery cells 211 are arranged in a spacer cavity 80. a includes a shell 2111, an electrode assembly 2112 and an end cover assembly 2113. The electrode assembly 2112 is arranged in the shell 2111, and the end cover assembly 2113 is covered at the opening of the shell 2111. The shell 2111 includes a first shell wall 2111a and a second shell wall 2111b arranged to intersect with each other. The area of ​​the first shell wall 2111a is larger than the area of ​​the second shell wall 2111b. The first shell wall 2111a is arranged toward the end plate 22, and the second shell wall 2111b is arranged toward the insulating protective member 30. A protective cavity 31 is arranged in the insulating protective member 30. The conductive connector 40 is disposed within the protective cavity 31 and includes a main body section 41, a first bend section 42, and a second bend section 43. The main body section 41 extends along the first direction X and is disposed within the protective cavity 31. The first bend section 42 and the second bend section 43 are located at opposite ends of the main body section 41 in the first direction X and intersect with the main body section 41. The first bend section 42 includes a first end 421, and the second bend section 43 includes a second end 431. The first end 421 and the second end 431 protrude beyond the insulating protective member 30. The first end 421 is electrically connected to the connection terminal 23, and the second end 431 is electrically connected to one of the battery cells 211a, thereby enabling the series and parallel connection of the battery cells in the battery module. A limit member 50 is disposed within the protective cavity 31, and the conductive connector 40 abuts against the limit member 50 on the side of the battery cell arrangement assembly 21 in the second direction Y.The limiting member 50 is provided with a slot 50a, which is open in a direction away from the bottom wall 111, and the conductive connector 40 is disposed in the slot 50a. The limiting member 50 includes a support plate 51 and a limiting plate 52. The support plate 51 is connected to the conductive connector 40, and the limiting plate 52 is disposed on the support plate 51 and protrudes from the support plate 51 in a direction away from the bottom wall 111. The support plate 51 and the limiting plate 52 enclose the slot 50a, and the conductive connector 40 is located between the support plate 51 and the insulating protective member 30. The limiting member 50 and the insulating protective member 30 are an integral structure. The insulating protective member 30 is provided separately from the housing 10 and is connected and fixed to at least one of the housing 10 and the battery cell arrangement assembly 21.

[0169] In a second aspect, the present application provides an electrical device including the above-mentioned battery device 100 .

[0170] 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: The box body comprises a bottom wall and side walls, wherein the side walls are arranged around the bottom wall and enclose a receiving cavity; a battery module disposed in the accommodating cavity, the battery module comprising a battery cell arrangement assembly, an end plate, and a connecting terminal; the battery cell arrangement assembly comprising a plurality of stacked battery cells; the end plates being disposed at both ends of the battery cell arrangement assembly in a first direction; the battery cell arrangement assembly being spaced apart from the box in a second direction to form a spacer cavity; the connecting terminal being disposed on the end plate; and the first and second directions intersecting. an insulating protective member disposed in the partition cavity and fixed relative to at least one of the battery cell arrangement assembly and the box body, wherein a protective cavity is provided in the insulating protective member; A conductive connector is provided in the protective cavity, and has a first end and a second end protruding from the insulating protective member. The first end is electrically connected to the connecting terminal, and the second end is electrically connected to one of the battery cells.

2. The battery device according to claim 1, wherein: The conductive connecting member includes a main body section, a first bending section and a second bending section. The main body section extends along the first direction and is arranged in the protective cavity. The first bending section and the second bending section are respectively located at the two ends of the main body section in the first direction and are intersected with the main body section. The first bending section includes the first end section, and the second bending section includes the second end section.

3. The battery device according to claim 1, wherein: A limiting member is provided in the protective cavity, and the conductive connecting member abuts against the limiting member on a side facing the battery cell arrangement assembly in the second direction.

4. The battery device according to claim 3, characterized in that The limiting member is provided with a slot, the slot is opened in a direction away from the bottom wall, and the conductive connecting member is provided in the slot.

5. The battery device according to claim 4, characterized in that The limiting member includes a support plate and a limiting plate. The support plate is connected to the insulating protective member. The limiting plate is arranged on the support plate and protrudes from the support plate in a direction away from the bottom wall. The support plate and the limiting plate enclose the slot.

6. The battery device according to claim 3, characterized in that The limiting component and the insulating protective component are an integrated structure.

7. The battery device according to any one of claims 1 to 6, characterized in that: The insulating protective member is separately provided from the box body, and the insulating protective member is connected and fixed to at least one of the box body and the battery cell arrangement assembly.

8. The battery device according to any one of claims 1 to 6, characterized in that: The insulating protective member and the box body are in an integrated structure.

9. The battery device according to any one of claims 1 to 6, characterized in that: The box body includes a non-metal box body, and the non-metal box body includes the bottom wall and the side wall.

10. The battery device according to claim 9, characterized in that The battery device further includes a heat exchange component, which is disposed in the accommodating cavity and between the bottom wall and the battery module.

11. The battery device according to claim 9, characterized in that The battery device also includes a metal component, which is arranged outside the accommodating cavity. The metal component includes a supporting member and a hanging member. The supporting member is supported on the side of the bottom wall away from the accommodating cavity, and the hanging member is arranged to protrude from the side of the side wall away from the accommodating cavity.

12. The battery device according to claim 11, wherein: The non-metal box body further includes an extension section, one end of which is connected to the side wall and the other end of which extends in a direction away from the accommodating cavity, and the mounting member and the extension section are at least partially stacked and connected.

13. The battery device according to any one of claims 1 to 6, characterized in that: The battery cell arrangement assembly includes multiple groups of battery packs distributed along the second direction, each group of battery packs includes multiple battery cells distributed along the first direction, the orthographic projection of the end plate in the first direction covers each of the battery packs, and in the second direction, the insulating protective member and the conductive connecting member are arranged between the outermost group of battery packs and the box body.

14. The battery device according to claim 13, wherein: The battery cell includes a shell, an electrode assembly and an end cover assembly. The electrode assembly is arranged in the shell, and the end cover assembly is covered at the opening of the shell. The shell includes a first shell wall and a second shell wall arranged to intersect each other. The area of ​​the first shell wall is larger than the area of ​​the second shell wall. The first shell wall is arranged toward the end plate, and the second shell wall is arranged toward the insulating protective member. Along the second direction, the insulating protective member covers the second shell wall of each battery cell of the outermost battery pack.

15. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 14.

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