Battery device and electric appliance

Abstract

The present disclosure relates to the technical field of batteries, and particularly relates to a battery device and a power consuming device. The battery device comprises a box body, at least one battery monomer and a mounting assembly. The box body has a containing space, the at least one battery monomer is located in the containing space, and the mounting assembly is arranged on the outer periphery of the box body and is used for mounting the box body to a bearing structure of the power consuming device. The mounting assembly comprises a first support and a second support. The first support is fixedly connected with the box body, the first support is provided with a hoisting structure, the hoisting structure is used for hoisting the box body, the second support is fixedly connected with the box body and the first support, and the second support is provided with a mounting piece. The present disclosure can improve the reliability of the battery device.

Description

TECHNICAL FIELD

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

[0002] With the increasing environmental pollution, new energy industry is attracting more and more attention. In the new energy industry, battery technology is an important factor for its development.

[0003] A rechargeable battery cell, which can also be referred to as a secondary battery cell, refers to a battery cell that can be activated by charging after discharging. Rechargeable battery cells are widely used in electronic devices such as mobile phones, laptops, electric cars, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes, and electric tools. Further improving the reliability of battery devices is one of the current research focuses. SUMMARY

[0004] In one aspect of the present disclosure, a battery device is provided, comprising:

[0005] a box body having a containing space;

[0006] at least one battery cell located in the containing space; and

[0007] a mounting assembly arranged on the outer periphery of the box body for mounting the box body to a load-bearing structure of an electric device;

[0008] wherein the mounting assembly comprises a first support and a second support, the first support is fixedly connected with the box body, the first support is provided with a hoisting structure, the hoisting structure is used for hoisting the box body, the second support is fixedly connected with the box body and the first support, and the second support is provided with a mounting piece.

[0009] According to the embodiment of the present disclosure, the mounting assembly can realize the hoisting function and the mounting function through the hoisting structure on the first support and the mounting piece on the second support respectively. Since the mounting assembly itself is a force-bearing structure and has high strength, the hoisting structure can effectively utilize the strength of the mounting assembly by being arranged on the first support of the mounting assembly. The first support is fixedly connected with the box body, has high stability and reliability, and is not easy to cause deformation of the side edge of the box body when the hoisting tool exerts force on the hoisting structure, which is beneficial to improve the reliability of the battery device. Moreover, the mounting assembly is arranged at the outer periphery of the box body, and such an arrangement position facilitates cooperation of the hoisting tool and the hoisting structure, and can meet the requirements of the hoisting operation. The second support is fixedly connected with the box body and the first support, and can share the stress of mounting through the box body and the first support. Compared with directly arranging the hoisting structure on the side beam of the box body, this is beneficial to make the mounting assembly bear the force exerted by the hoisting tool, reduce the influence of the force exerted by the hoisting tool on the box body, reduce the local stress borne by the side beam of the box body, thereby reducing the risk of deformation of the side beam of the box body during hoisting, improving the problem of strength reduction of the box body structure caused by deformation of the side beam of the box body, thereby reducing the influence on the overall sealing performance of the battery device and improving the reliability of the battery device.

[0010] In some embodiments, the mounting assembly is arranged at at least one corner of the box body.

[0011] In the present embodiment, the mounting assembly is arranged at at least one corner of the box body, which is beneficial to reduce the risk of bending deformation of the middle part of the side beam of the box body due to excessive bending moment during hoisting, thereby improving the reliability of the battery device. In addition, the mounting assembly can limit the displacement of the box body in the driving direction. When the speed of the vehicle changes, the battery device may shake in the driving direction due to inertia. Arranging the mounting assembly at the corner of the box body is beneficial to further limit such shaking at the edge of the box body, thereby improving the stability of the battery device during driving.

[0012] In some embodiments, the first support has a first surface and a second surface, and the outer normal of the first surface and the outer normal of the second surface intersect;

[0013] The second support is fixedly connected with the first surface, and the hoisting structure is arranged on the second surface.

[0014] In the present embodiment, the hoisting structure is arranged on the second surface, the second support is connected with the first surface, and the outer normal of the first surface and the outer normal of the second surface intersect, which can separate the hoisting structure and the second support and arrange them on two surfaces of the first support which have different orientations, thereby reducing the risk of damage of other functional structures by the hoisting tool during hoisting, and reducing the risk of interference and design difficulty of the hoisting structure and the second support.

[0015] In some embodiments, the hanging member is floatable relative to the box in a plane perpendicular to the extension direction of the second support relative to the box.

[0016] In the present embodiment, the hanging member is floatable relative to the box in a plane perpendicular to the extension direction of the second support relative to the box, which can improve the adaptability of the battery box to the load-carrying structure of the electrical equipment. In the context of automobile production, generally, the same series of vehicle models of an automobile manufacturer are based on the same platform, and specific to a certain model of vehicle under the same platform, sometimes only the length of the vehicle frame has a slight difference, that is, the position of the vehicle frame hanging point has a difference, that is, the hanging point has a difference in the first direction, and the rest of the interface is basically consistent. When the vehicle frame hanging point of the automobile has the above difference or deviation, the floatability of the second support in the plane perpendicular to the extension direction of the second support relative to the box can be used to match the vehicle frame hanging point, realizing the hanging of the battery device. Compared with the technical solution in which the position of the hanging support relative to the box is relatively fixed, this is conducive to improving the adaptability of the battery device to the electrical equipment, thereby improving the flexibility and standardization degree of design and production, facilitating design resources and reducing the research and development period and design difficulty. At the same time, it can also reduce the position accuracy requirement of the load-carrying structure of the electrical equipment during production, thereby reducing the production cost.

[0017] In some embodiments, the second support comprises:

[0018] a pair of ear plate members fixedly connected with the box and the first support respectively, the hanging member being clamped between the pair of ear plate members; and

[0019] a locking bolt penetrating the hanging member and the ear plate member, at least one of the hanging member and the ear plate member and the locking bolt being provided with a cooperation gap, the locking bolt having a locked state and an unlocked state;

[0020] In the locked state, the locking bolt extrudes the ear plate member to constrain the ear plate member, so as to lock the hanging member; in the unlocked state, the locking bolt releases the extrusion on the ear plate member, so that the hanging member is floatable relative to the box.

[0021] In the embodiment, the ear plate and the locking bolt are used to clamp and lock the mounting member on both sides, which is simple in structure and easy to realize. In the case of needing to adjust the position of the mounting member, for example, when another vehicle model is produced on the same platform, the locking bolt can be returned to the unlocked state by only releasing the constraint of the locking bolt. At the same time, the ear plate is arranged on both sides of the mounting member, which facilitates the matching operation of personnel or machines between the mounting member and the load-bearing structure of the electrical equipment, and is conducive to improving the convenience of floating adjustment of the mounting assembly.

[0022] The second bracket further comprises a connecting plate arranged between the pair of ear plates and integrally formed with the pair of ear plates.

[0023] In the embodiment, the ear plate and the connecting plate are integrally formed, which is conducive to the installation and positioning of the ear plate, and also facilitates the adjustment operation and assembly process of the mounting member.

[0024] In some embodiments, the mounting member is provided with a waist-shaped mounting hole, and the length direction of the waist-shaped mounting hole is arranged parallel to the extension direction of the second bracket relative to the box.

[0025] In the embodiment, on the basis that the mounting member can float in the plane perpendicular to the extension direction of the second bracket relative to the box, the mounting member is further provided with a waist-shaped mounting hole with the length direction parallel to the extension direction of the second bracket, so that the mounting member has degrees of freedom in the first direction, the second direction and the third direction. This can not only further improve the adaptability of the battery device to different electrical equipment, but also reduce the position accuracy requirements of the mounting member and the load-bearing structure of the electrical equipment during production, thereby reducing the cost.

[0026] In some embodiments, the first bracket is further provided with a bracket mounting portion for arranging a pipeline fixing bracket, for connecting with the fixing bracket of the external pipeline.

[0027] In the embodiment, the bracket mounting portion is arranged on the first bracket, which is conducive to the installation and arrangement of the pipeline at the first bracket, and makes the pipeline arrangement more reasonable and reduces the risk of interference with other structures.

[0028] In some embodiments, the first bracket is further provided with a grounding member for connecting with the grounding wire of the battery device.

[0029] In the embodiment, the grounding member is arranged on the first bracket, which is conducive to further utilizing the space of the first bracket. Moreover, it provides conditions for the grounding wire to be led out from the corner, which is conducive to improving the interference with other structures.

[0030] In some embodiments, the first support has a protrusion for fitting with the box, the protrusion comprising a part protruding from the opposite side surface of the first surface and / or a part protruding from the opposite side surface of the second surface.

[0031] In the embodiment, the protrusion fits with the box, and the mounting assembly has the functions of hoisting and mounting, and needs to bear a large force. The protrusion is beneficial to increase the connection strength between the first support and the box, thereby improving the connection reliability between the mounting assembly and the box. In addition, the presence of the protrusion reduces the difficulty of positioning when the first support and the box are assembled. Meanwhile, the protrusion comprises a part protruding from the opposite side surface of the first surface and / or a part protruding from the opposite side surface of the second surface. Compared with the scheme that the mounting assembly is connected with the box by using a plane, the protrusion can bear the force acting on the mounting assembly during mounting and hoisting by using the fitting connection relationship, thereby improving the stress condition of the mounting assembly, reducing the risk of damage of the mounting assembly, and improving the reliability of the battery device.

[0032] In some embodiments, the box comprises a first beam and a second beam connected with the mounting assembly, the first beam extends along a first direction, the second beam extends along a second direction, the outer normal of the first surface is parallel to the first direction, and the outer normal of the second surface is parallel to the second direction, wherein the first direction and the second direction are mutually perpendicular horizontal directions.

[0033] The protrusion fits with and is fixedly connected with at least one of the first beam and the second beam. The extension direction of the part of the protrusion protruding from the opposite side surface of the first surface is parallel to the extension direction of the first beam, and the extension direction of the part of the protrusion protruding from the opposite side surface of the second surface is parallel to the extension direction of the second beam.

[0034] In the embodiment, the first beam extends along the first direction, the second beam extends along the second direction, the extension direction of the part of the protrusion protruding from the opposite side surface of the first surface is parallel to the extension direction of the first beam, and the extension direction of the part of the protrusion protruding from the opposite side surface of the second surface is parallel to the extension direction of the second beam. In this way, the protrusion can be more easily assembled with the first beam and the second beam.

[0035] In another aspect of the present disclosure, a power utilization device is provided, comprising the aforementioned battery device.

[0036] The power utilization device adopting the embodiment of the battery device has good reliability. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0038] The present disclosure can be more clearly understood and appreciated from the following detailed description, taken in conjunction with the following drawings of which:

[0039] Figure 1 is a structural schematic diagram of some embodiments of the battery device according to the present disclosure;

[0040] Figure 2 is an exploded structural schematic diagram of some embodiments of the battery device according to the present disclosure;

[0041] Figure 3 is a structural schematic diagram of the connection structure of the box and the mounting assembly of some embodiments of the battery device according to the present disclosure;

[0042] Figure 4 is Figure 3 is a partial enlarged schematic diagram of the box part;

[0043] Figure 5 is an exploded schematic diagram of the connection structure of the box and the mounting assembly of some embodiments of the battery device according to the present disclosure;

[0044] Figure 6 is a partial sectional schematic diagram of the connection structure of some embodiments of the battery device according to the present disclosure and the bearing structure of the electric device;

[0045] Figure 7 is a partial top view schematic diagram of some embodiments of the battery device according to the present disclosure;

[0046] Figure 8 is a structural schematic diagram of the first bracket of some embodiments of the battery device according to the present disclosure.

[0047] It should be understood that the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components.

[0048] Explanation of reference numerals:

[0049] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 400, axle; 500, wheel;

[0050] 10, box; 20, battery cell;

[0051] 1, mounting assembly; 11, first bracket; 111, first surface; 112, second surface; 113, lifting structure; 114, bracket mounting portion; 115, grounding member; 116, protruding portion; 12, second bracket; 121, connecting plate; 122, mounting member; 1221, waist-shaped mounting hole; 123, ear plate member; 124, locking bolt; 2, tail mounting bracket; 3, middle mounting bracket; 4, front end mounting bracket;

[0052] X, first direction; Y, second direction; Z, third direction; H, lifting tool; C, connecting member; L, bearing structure. DETAILED DESCRIPTION

[0053] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses, except as described by the appended claims. The present disclosure can be implemented in numerous different forms, as is required, and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the relative arrangement of the components and steps set forth in these embodiments, the components of the materials, numerical expressions, and numerical values are to be interpreted as merely exemplary, rather than as a limitation unless specifically stated otherwise.

[0054] The "first", "second", and similar words used in the present disclosure do not indicate any order, number, or importance, but are only used to distinguish different parts. The "include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right", and the like are only used to indicate relative positional relationships, which may also change accordingly when the absolute position of the described object changes.

[0055] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to other devices, the specific device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0056] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by a person of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted in a manner consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise explicitly defined herein.

[0057] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered part of the specification.

[0058] In some related technologies, when the battery device is loaded or unloaded in the electrical equipment such as a car, a lifting tool is used to lift the box of the battery device. The lifting position is usually the side beam of the box, and the lifting tool applies a lifting force to the side beam of the box to realize the lifting of the battery device.

[0059] It is found through research that the side beam of the box is prone to deformation due to local stress during lifting, insufficient material strength or stiffness, and other factors, which leads to a decrease in the structural strength of the battery box and may damage the overall sealing performance of the battery box, thereby affecting the reliability of the battery device.

[0060] Therefore, the embodiments of the present disclosure provide a battery device capable of improving the reliability of the battery device.

[0061] In one aspect of the present disclosure, a battery device is provided, comprising: a box having a containing space;

[0062] at least one battery cell located in the containing space; and

[0063] a mounting assembly arranged on the outer periphery of the box, used to mount the box to the load-bearing structure of the electrical equipment;

[0064] The mounting assembly comprises a first support and a second support, the first support is fixedly connected with the box, the first support is provided with a lifting structure, the lifting structure is used to lift the box, the second support is fixedly connected with the box and the first support, and the second support is provided with a mounting piece.

[0065] According to the embodiments of the present disclosure, the mounting assembly can realize the hoisting function and the mounting function through the hoisting structure on the first support and the mounting piece on the second support respectively. Since the mounting assembly itself is a force-bearing structure and has high strength, the hoisting structure can effectively utilize the strength of the mounting assembly by being arranged on the first support of the mounting assembly. The first support is fixedly connected with the box body, and has high stability and reliability. When the hoisting tool exerts force on the hoisting structure, the deformation of the side edge of the box body is not easy to occur, which is beneficial to improve the reliability of the battery device. Moreover, the mounting assembly is arranged at the outer periphery of the box body, and such arrangement position facilitates the cooperation between the hoisting tool and the hoisting structure, and can meet the requirements of the hoisting operation. The second support is fixedly connected with the box body and the first support, and can share the stress of the mounting through the box body and the first support. Compared with directly arranging the hoisting structure on the side beam of the box body, this is beneficial to make the mounting assembly bear the force exerted by the hoisting tool, reduce the influence of the force exerted by the hoisting tool on the box body, reduce the local stress borne by the side beam of the box body, thereby reducing the risk of deformation of the side beam of the box body during hoisting, improving the problem of the decrease of the structural strength of the box body caused by the deformation of the side beam of the box body, thereby reducing the influence on the overall sealing performance of the battery device and improving the reliability of the battery device.

[0066] The battery device of the embodiments of the present disclosure can be applied to various types of electric equipment using the battery device. The electric equipment can be a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric automobile, a ship, a spacecraft, an electric toy and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game machine, an electric automobile toy, an electric ship toy and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator and an electric planer. The embodiments of the present disclosure do not particularly limit the above-mentioned electric equipment. The battery device can be used for power supply of electric equipment such as a vehicle, for example, to provide power for control or driving.

[0067] In some embodiments, the battery device can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0068] Figure 1 is a structural schematic diagram of some embodiments of the electric equipment according to the present disclosure. For convenience, the electric equipment is taken as a vehicle for example. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile or a hybrid electric automobile, etc. The battery device 100 can be arranged at the bottom, the front or the tail of the vehicle 1000.

[0069] The battery device 100 can be used to supply power for the vehicle 1000, for example, the battery device 100 can be used as the operating power source of the vehicle 1000, for example, for the circuit system of the vehicle 1000, for example, for the starting, navigation and working power requirements of the vehicle 1000. The battery device 100 can not only be used as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving force for the vehicle 1000.

[0070] The inside of the vehicle 1000 can also be provided with an axle 400, a wheel 500, a motor 300 and a controller 200, which is used to control the battery device 100 to supply power to the motor 300, for example, when the vehicle 1000 uses the battery device 100 as the driving power source, the controller 200 can provide the required power for the motor 300 at a uniform speed or acceleration. The motor 300 is used to drive the axle 400 to rotate, so as to drive the wheel 500 to rotate.

[0071] Figure 2 is a schematic diagram of the exploded structure according to some embodiments of the battery device of the present disclosure.

[0072] Reference Figure 2 In some embodiments, the battery device 100 includes a box 10, a box cover and one or more battery cells 20 arranged in the box 10. The box 10 not only contains the battery cells 20, but also provides functions such as cooling, sealing and impact protection for the battery cells 20, and can also avoid the adverse effects of liquid or other foreign matter on the charging and discharging or reliability of the battery cells 20. The box cover can be attached to the end of the box 10 to close the box 10.

[0073] The battery cells 20 can be electrically connected in series, parallel or mixed, for example, to achieve the required electrical performance parameters of the battery device 100. The plurality of battery cells 20 are arranged in rows, and one or more rows of battery cells 20 can be arranged in the box according to needs.

[0074] In some embodiments, the battery cells 20 of the battery device 100 can be arranged along at least one of the length and width directions of the box 10. According to actual needs, at least one row or column of battery cells 20 can be arranged. According to needs, one or more layers of battery cells 20 can also be arranged in the height direction of the battery device 100.

[0075] In some embodiments, a plurality of battery cells 20 can be first connected in series or in parallel or in a mixed connection to form a battery module, and then a plurality of battery modules are connected in series or in parallel or in a mixed connection to form a whole, which is accommodated in the box 10. In other embodiments, all battery cells 20 are directly connected in series or in parallel or in a mixed connection, and then the whole of all battery cells 20 is accommodated in the box 10. The electrode terminals of the battery cells 20 can be electrically connected to adjacent battery cells 20 through busbars.

[0076] Figure 3 is a structural schematic diagram of the connection structure of the box and the mounting assembly according to some embodiments of the battery device of the present disclosure. Figure 4 is Figure 3 is a partial enlarged schematic diagram of the box part in Figure 6 is a partial sectional view schematic diagram of the connection structure of the box and the mounting assembly according to some embodiments of the battery device of the present disclosure and the load-bearing structure of the electrical equipment.

[0077] With reference to Figure 3 , Figure 4 and Figure 6 , the embodiments of the present disclosure provide a battery device, which comprises a box 10, at least one battery cell 20 and a mounting assembly 1. The box 10 has an accommodation space, the at least one battery cell 20 is located in the accommodation space, and the mounting assembly 1 is arranged on the outer periphery of the box 10 and is used for mounting the box 10 to the load-bearing structure L of the electrical equipment. The mounting assembly 1 comprises a first support 11 and a second support 12, the first support 11 is fixedly connected with the box 10, the first support 11 is provided with a hoisting structure 113, the hoisting structure 113 is used for hoisting the box 10, and the second support 12 is fixedly connected with the box 10 and the first support 11, and the second support 12 is provided with a mounting piece 122.

[0078] In the embodiments of the present disclosure, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be activated by charging after discharging.

[0079] The battery cell 20 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-acid battery, etc., which is not limited by the embodiments of the present disclosure. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc., which is also not limited by the embodiments of the present disclosure. The battery cell 20 is generally packaged in a cylindrical battery cell, a square battery cell and a soft package battery cell, which is also not limited by the embodiments of the present disclosure.

[0080] The battery cell 20 of the embodiments of the present disclosure can be suitable for various battery devices. The battery device mentioned here refers to a physical module comprising one or more battery cells 20 to provide higher voltage and capacity.

[0081] As an example, the battery cell 20 includes an electrode assembly. The electrode assembly includes a positive electrode tab, a negative electrode tab, and a separator. The separator is located between the positive electrode tab and the negative electrode tab. The operation of the battery cell 20 is achieved by the movement of internal metal ions between the positive electrode tab and the negative electrode tab. During charging and discharging of the battery cell 20, active ions (e.g., lithium ions) are inserted and extracted between the positive electrode tab and the negative electrode tab. The separator, which is disposed between the positive electrode tab and the negative electrode tab, can function to prevent short-circuiting of the positive and negative electrodes while allowing the active ions to pass through.

[0082] The positive electrode tab includes a positive electrode active material layer. The positive electrode tab can further include a positive electrode current collector substrate, and the positive electrode active material layer can be disposed on a surface of the positive electrode current collector substrate. For example, the positive electrode active material layer can be disposed on one side surface or both side surfaces in the thickness direction of the positive electrode current collector substrate.

[0083] As an example, the positive electrode current collector substrate can employ a metal foil or a composite current collector. For example, as the metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, etc. can be employed. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by disposing a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (e.g., a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0084] As an example, the positive electrode active material layer can include at least one of a lithium-containing phosphate, a lithium transition metal oxide, and a modified compound of each thereof. However, the disclosure is not limited to these materials, and other conventional materials that can be used as a positive electrode active material layer can also be used. These positive electrode active material layers can be used alone or in combination with two or more. Among them, examples of the lithium-containing phosphate can include, but are not limited to, at least one of lithium iron phosphate (e.g., LiFePO4 (which can also be referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (e.g., LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium manganese iron phosphate, and a composite material of lithium manganese iron phosphate and carbon. Examples of the lithium transition metal oxide can include, but are not limited to, at least one of lithium cobalt oxide (e.g., LiCoO2), lithium nickel oxide (e.g., LiNiO2), lithium manganese oxide (e.g., LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (e.g., LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (which can also be referred to as NCM 333 ), LiNi 0.5 Co 0.2 Mn0.3 O2(also can be referred to as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O2(also can be referred to as NCM 211 ), LiNi 0.6 Co 0.2 Mn 0.2 O2(also can be referred to as NCM 622 ), LiNi 0.8 Co 0.1 Mn 0.1 O2(also can be referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O2), and modified compounds thereof.

[0085] The negative electrode tab includes a negative electrode active material layer. The negative electrode tab can further include a negative electrode current collector substrate, and the negative electrode active material layer can be disposed on a surface of the negative electrode current collector substrate. For example, the negative electrode active material layer can be disposed on one side surface or both side surfaces in the thickness direction of the negative electrode current collector substrate.

[0086] As an example, the negative electrode current collector substrate can employ a metal foil, a foamed metal, or a composite current collector. For example, as the metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, or the like can be employed. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, or the like. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by disposing a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, or the like) on a polymer material base (such as a base of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0087] As an example, the negative electrode active material layer can employ a negative electrode active material layer for a battery cell 20 known in the art. As an example, the negative electrode active material layer can include at least one of artificial graphite, natural graphite, soft carbon, hard carbon, a silicon-based material, a tin-based material, lithium titanate, or the like. The silicon-based material can be selected from at least one of elemental silicon, a silicon oxide compound, a silicon-carbon composite, a silicon-nitrogen composite, and a silicon alloy. The tin-based material can be selected from at least one of elemental tin, a tin oxide compound, and a tin alloy. However, the present disclosure is not limited to these materials, and other conventional materials that can be used as a negative electrode active material layer can also be used. These negative electrode active material layers can be used alone or in combination with two or more.

[0088] In some embodiments, the separator is a separator membrane. The type of separator membrane is not particularly limited in the present disclosure, and any known porous structure separator membrane having good chemical stability and mechanical stability can be used.

[0089] As an example, the main material of the separator membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator membrane can be a single layer film or a multi-layer composite film, and is not particularly limited. When the separator membrane is a multi-layer composite film, the materials of the respective layers can be the same or different, and are not particularly limited. The separator membrane can be a separate component located between the positive electrode sheet and the negative electrode sheet, or can be attached to the surface of the positive electrode sheet and / or the surface of the negative electrode sheet while being located between the positive electrode sheet and the negative electrode sheet.

[0090] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is disposed between the positive electrode sheet and the negative electrode sheet, and functions to transport ions and separate the positive and negative electrodes.

[0091] In some embodiments, the battery cell 20 further includes an electrolyte that functions to conduct ions between the positive and negative electrodes. The type of electrolyte is not particularly limited in the present disclosure, and can be selected as needed. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0092] As an example, the liquid electrolyte includes an electrolyte salt and a solvent.

[0093] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bisfluorosulfonylimide, lithium bis-trifluoromethanesulfonylimide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorobisoxalate borate, lithium bisoxalate borate, lithium difluorodioxalate phosphate, and lithium tetrafluorodioxalate phosphate.

[0094] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, butanediol sulfone, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent can also be an ether-based solvent. The ether-based solvent can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyl tetrahydrofuran, diphenyl ether, and crown ether.

[0095] As an example, the gel-state electrolyte includes a polymer as a backbone network of the electrolyte, in combination with an ionic liquid-lithium salt.

[0096] As an example, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0097] As an example, polymer solid electrolytes can be polyethers (polyoxyethylene), polysiloxanes, polycarbonates, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, monoionic polymers, polyionic liquids-lithium salts, cellulose, etc.

[0098] As an example, inorganic solid electrolytes can be one or more of the following: oxide solid electrolytes (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON thin film), sulfide solid electrolytes (crystalline lithium superconducting ion conductor (lithium germanium phosphorus sulfide, silver sulfide germanium ore), amorphous sulfides), halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0099] As an example, composite solid electrolytes are formed by adding inorganic solid electrolyte fillers to polymer solid electrolytes.

[0100] The mounting assembly 1 is disposed on the outer periphery of the housing 10. The mounting assembly 1 can be integrally formed with the housing 10 or mounted on the housing 10 as a separate component. The outer periphery of the housing 10 refers to the outer edge of the housing 10, such as the side beams and corners of the housing 10. The mounting assembly 1 is used to mount the housing 10 to the supporting structure of the electrical equipment, thereby enabling the connection between the battery device 100 and the electrical equipment. In the case where the electrical equipment is a vehicle 1000, its supporting structure can be a mounting point on the vehicle frame.

[0101] In addition to being connected to the load-bearing structure of the electrical equipment via the mounting assembly 1, the enclosure 10 may also have other structures for connecting to the load-bearing structure L of the electrical equipment. Figure 3 In the middle, the housing 10 is also equipped with a rear mounting bracket 2, a middle mounting bracket 3, and a front mounting bracket 4. The mounting holes on the rear mounting bracket 2, the middle mounting bracket 3, and the front mounting bracket 4 can be fixed or floating. The mounting assembly 1 can assist the above mounting assemblies in meeting the connection requirements.

[0102] exist Figure 4 In the mounting assembly 1, there is a first bracket 11, which is fixedly connected to the housing 10. The first bracket 11 is provided with a hoisting structure 113, which is used to hoist the housing 10. The hoisting structure 113 can cooperate with the hoisting fixture H and be relatively fixed to complete the hoisting of the housing 10.

[0103] The mounting assembly 1 also includes a second bracket 12, which is fixedly connected to the housing 10 and the first bracket 11. The second bracket 12 is provided with a mounting element 122. Figure 3As shown, the mounting member 122 can include a main body part which can be used for connection with the box body 10, and a plate-shaped structure extending away from the box body 10, and structures related to the mounting function can be provided on the plate-shaped structure, such as a waist-shaped mounting hole 1221. Figure 6 In the embodiment, the load-bearing structure L of the electrical equipment can be connected with the plate-shaped structure of the mounting member 122 through the connecting member C. The position of the load-bearing structure L can be lower than the plate-shaped structure of the mounting member 122, or higher than the plate-shaped structure of the mounting member 122. Figure 6 In the embodiment, the load-bearing structure L of the electrical equipment can be connected with the plate-shaped structure of the mounting member 122 through the connecting member C. The position of the load-bearing structure L can be lower than the plate-shaped structure of the mounting member 122, or higher than the plate-shaped structure of the mounting member 122.

[0104] According to the embodiment of the present disclosure, the mounting assembly 1 can realize the hoisting function and the mounting function through the hoisting structure 113 on the first support 11 and the mounting member 122 on the second support 12, respectively. Since the mounting assembly 1 itself is a force-bearing structure and has high strength, the hoisting structure 113 can effectively utilize the strength of the mounting assembly 1 by being arranged on the first support 11 of the mounting assembly 1. The first support 11 is fixedly connected with the box body 10 and has high stability and reliability, and when the hoisting tool exerts force on the hoisting structure 113, the side edge of the box body 10 is not easily deformed, which is beneficial to improve the reliability of the battery device. Moreover, the mounting assembly 1 is arranged at the outer periphery of the box body 10, and such arrangement position facilitates the cooperation of the hoisting tool H with the hoisting structure 113 and can meet the requirements of hoisting operation. The second support 12 is fixedly connected with the box body 10 and the first support 11 and can share the stress of mounting with the box body 10 and the first support 11. Compared with directly arranging the hoisting structure 113 on the side beam of the box body 10, this is beneficial to make the mounting assembly 1 bear the force exerted by the hoisting tool H, reduce the influence of the force exerted by the hoisting tool H on the box body 10, reduce the local stress on the side beam of the box body 10, thereby reducing the risk of deformation of the side beam of the box body 10 during hoisting, improving the problem of structural strength reduction of the box body 10 caused by the deformation of the side beam of the box body 10, thereby reducing the influence on the overall sealing performance of the battery device 100 and improving the reliability of the battery device 100.

[0105] Reference Figure 3 In some embodiments, the mounting assembly 1 is arranged at at least one corner of the box body 10.

[0106] The corner of the box body 10 refers to the junction of two adjacent side beams of the box body 10 which extend in different directions. At least one corner of the box body 10 can refer to one corner or multiple corners of the box body 10. As shown, Figure 3 The mounting assembly 1 can be arranged at two corners on the same side of the box body 10 along the first direction X.

[0107] In the present embodiment, the mounting assembly 1 is arranged at at least one corner of the box 10, which is advantageous for reducing the risk of bending deformation of the side beam of the box 10 at the middle part thereof due to excessive bending moment during hoisting, thereby improving the reliability of the battery device 100. In addition, the mounting assembly 1 can limit the displacement of the box 10 in the driving direction, and when the speed of the vehicle changes, the battery device 100 can sway in the driving direction due to inertia. Arranging the mounting assembly 1 at the corner of the box 10 is advantageous for further limiting such sway at the edge of the box 10, thereby improving the stability of the battery device 100 during driving.

[0108] Reference Figure 4 In some embodiments, the first bracket 11 has a first surface 111 and a second surface 112, and the outer normal of the first surface 111 and the outer normal of the second surface 112 intersect, wherein the second bracket 12 is fixedly connected to the first surface 111, and the hoisting structure 113 is arranged on the second surface 112.

[0109] The outer normal of the first surface 111 may, for example, be the first direction X, and the outer normal of the second surface 112 may, for example, be the second direction Y.

[0110] In the present embodiment, the hoisting structure 113 is arranged on the second surface 112, the second bracket 12 is connected to the first surface 111, and the outer normal of the first surface 111 and the outer normal of the second surface 112 intersect, which can separate the hoisting structure 113 and the second bracket 12 and arrange them on two surfaces of the first bracket 11 that face in different directions, thereby reducing the risk of damage to other functional structures by the hoisting tool H during hoisting, and reducing the risk of interference between the hoisting structure 113 and the second bracket 12 and the design difficulty.

[0111] Figure 5 is an exploded schematic view of the connection structure of the box and the mounting assembly according to some embodiments of the battery device of the present disclosure.

[0112] Reference Figure 4 , Figure 5 and Figure 6 In some embodiments, the mounting member 122 is floatable relative to the box 10 in a plane perpendicular to the extension direction of the second bracket 12 relative to the box 10.

[0113] The mounting member 122 is floatable relative to the box 10 in a plane perpendicular to the extension direction of the second bracket 12 relative to the box 10, and taking the electrically powered device for the vehicle 1000 as an example, the mounting member 122 can be arranged to be movable in the plane perpendicular to the extension direction of the second bracket 12 relative to the box 10, and the second bracket 12 can be arranged to be movable in the plane perpendicular to the extension direction of the second bracket 12 relative to the box 10. Figure 4In some embodiments, the extending direction of the second bracket 12 relative to the box 10 is the width direction of the vehicle (i.e., the second direction Y), so that the mounting member 122 is floatable in the driving direction of the vehicle 1000 (i.e., the first direction X) and the height direction (i.e., the third direction Z).

[0114] In the present embodiment, the mounting member 122 is floatable relative to the box 10 in a plane perpendicular to the extending direction of the second bracket 12 relative to the box 10, which can improve the adaptability of the battery device 100 to the load structure L of the electrical equipment. In the context of automobile production, generally, the same series of vehicle models of an automobile manufacturer are all based on the same platform, and as for a specific vehicle model under the same platform, sometimes only the length of the vehicle frame is slightly different, i.e., the positions of the mounting points of the vehicle frame are different, i.e., the mounting points are different in the first direction X, and the rest of the interfaces are basically the same. When the mounting points of the vehicle frame of the automobile have the above differences or deviations, the floatability of the second bracket 12 in the plane perpendicular to the extending direction of the second bracket 12 relative to the box 10 can be used to match the mounting points of the vehicle frame, so as to realize the mounting of the battery device 100. Compared with the technical solution in which the position of the mounting bracket relative to the box is fixed, this is conducive to improving the adaptability of the battery device 100 to the electrical equipment, thereby improving the flexibility and standardization degree of design and production, facilitating design resources and reducing the research and development period and the design difficulty. At the same time, it can also reduce the position accuracy requirement of the load structure of the electrical equipment during production, thereby reducing the production cost.

[0115] Figure 7 is a partial top view schematic diagram of some embodiments of the battery device according to the present disclosure.

[0116] Reference Figure 7 In some embodiments, the second bracket 12 includes a pair of ear plate members 123 and a locking bolt 124. The pair of ear plate members 123 are fixedly connected with the box 10 and the first bracket 11 respectively, and the mounting member 122 is clamped between the pair of ear plate members 123. The locking bolt 124 is arranged through the mounting member 122 and the ear plate members 123, and at least one of the mounting member 122 and the ear plate members 123 is provided with a cooperation gap with the locking bolt 124. The locking bolt 124 has a locked state and an unlocked state. In the locked state, the locking bolt 124 extrudes the ear plate members 123 to constrain the ear plate members 123, thereby locking the mounting member 122. In the unlocked state, the locking bolt 124 releases the extrusion of the ear plate members 123, so that the mounting member 122 is floatable relative to the box 10.

[0117] In Figure 7In the embodiment, the second support 12 comprises a pair of ear plate members 123. The ear plate members 123 can be L-shaped, and the pair of ear plate members can be oppositely L-shaped and fixedly connected with the box body 10 and the first support 11 respectively. The hanging member 122 is clamped between the two ear plate members 123.

[0118] The locking bolt 124 is arranged through the hanging member 122 and the ear plate member 123, and a cooperation gap is arranged between the locking bolt 124 and at least one of the hanging member 122 and the ear plate member 123. The cooperation gap can be provided by a hole arranged on the ear plate member 123 and / or the hanging member 122, so as to realize the floating of the hanging member 122. The locking bolt 124 has a locked state and an unlocked state. In the locked state, the locking bolt 124 extrudes the ear plate member 123 to constrain the ear plate member 123. The ear plate member 123 is deformed and extruded to the middle due to the extrusion of the locking bolt 124, so that a friction force is formed between the ear plate member 123 and the hanging member 122, and the hanging member 122 is clamped by the ear plate member 123, so that the hanging member 122 is relatively fixed with the box body 10. In the unlocked state, the locking bolt 124 is not locked, so as to release the extrusion on the ear plate member 123, so that the hanging member 122 can float relative to the box body 10. At this time, the position of the hanging member 122 can be adjusted to match the position of the load-bearing structure L of the electrical equipment.

[0119] The number of the locking bolts 124 can be two, for example, and arranged along the third direction Z (i.e. the height direction). Taking the electrical equipment as the vehicle 1000 for example, the outer diameter of the locking bolt 124 can be 10 mm, for example, and the hole diameter of the hole arranged on the ear plate member 123 and / or the hanging member 122 can be 15 mm, for example. In this way, the hanging member 122 has a floating space of 5 mm in the first direction X and the third direction Z.

[0120] In the embodiment, the ear plate member 123 and the locking bolt 124 are used to clamp and lock on both sides of the hanging member 122, which has a simple structure and is easy to realize. In the case where the position of the hanging member 122 needs to be adjusted, for example, when another vehicle model is produced on the same platform, the locking bolt 124 can be returned to the unlocked state by only releasing the constraint of the locking bolt 124. At the same time, the ear plate member 123 is arranged on both sides of the hanging member 122, which is convenient for personnel or machines to perform the matching operation between the hanging member 122 and the load-bearing structure L of the electrical equipment, and is conducive to improving the convenience of floating adjustment of the hanging assembly 1.

[0121] Reference Figure 5 In some embodiments, the second support 12 further comprises a connecting plate 121 arranged between the pair of ear plate members 123 and integrally formed with the pair of ear plate members 123.

[0122] The ear plate member 123 and the connecting plate 121 can be integrally formed by forging or casting, for example. In Figure 5In some embodiments, the connecting position of the connecting plate 121 and the lug plate member 123 can be a corner of the L-shaped lug plate member, and the connecting plate 121 and the lug plate member 123 together form a shape similar to Π.

[0123] In the present embodiment, the lug plate member 123 is integrally formed with the connecting plate 121, which is beneficial for the installation and positioning of the lug plate member 123, and is also beneficial for simplifying the adjustment operation and assembly process of the mounting member 122.

[0124] Reference Figure 6 and Figure 7 In some embodiments, the mounting member 122 is provided with a waist-shaped mounting hole 1221, and the length direction of the waist-shaped mounting hole 1221 is parallel to the extension direction of the second bracket 12 relative to the cabinet 10.

[0125] The waist-shaped mounting hole 1221 can be an oblong hole, so that when mounting, the length direction of the waist-shaped mounting hole 1221 can also provide a floating space. Figure 6 In some embodiments, taking the electrical equipment as an example, the load bearing structure L of the electrical equipment is arranged on the waist-shaped mounting hole 1221 through the connecting member C. The connecting member C can be a bolt, for example, and the outer diameter of the connecting member C can be 14 mm, for example. The size of the waist-shaped mounting hole 1221 in the length direction is, for example, 18 mm, so that the connecting member C has a floating space relative to the plane perpendicular to the extension direction of the second bracket 12 relative to the cabinet 10 (the plane in which the first direction X and the third direction Z are located in the present embodiment), and also has a floating space in the length direction of the waist-shaped mounting hole 1221 (i.e. parallel to the extension direction of the second bracket 12 relative to the cabinet 10, in the present embodiment, the second direction Y). Figure 7 Figure 7 In some embodiments, taking the electrical equipment as an example, the load bearing structure L of the electrical equipment is arranged on the waist-shaped mounting hole 1221 through the connecting member C. The connecting member C can be a bolt, for example, and the outer diameter of the connecting member C can be 14 mm, for example. The size of the waist-shaped mounting hole 1221 in the length direction is, for example, 18 mm, so that the connecting member C has a floating space relative to the plane perpendicular to the extension direction of the second bracket 12 relative to the cabinet 10 (the plane in which the first direction X and the third direction Z are located in the present embodiment), and also has a floating space in the length direction of the waist-shaped mounting hole 1221 (i.e. parallel to the extension direction of the second bracket 12 relative to the cabinet 10, in the present embodiment, the second direction Y).

[0126] In the present embodiment, on the basis of the floating of the mounting member 122 in the plane perpendicular to the extension direction of the second bracket 12 relative to the cabinet 10, the mounting member 122 is further provided with the waist-shaped mounting hole 1221 whose length direction is parallel to the extension direction of the second bracket 12 relative to the cabinet 10, so that the mounting member 122 has degrees of freedom in the first direction X, the second direction Y and the third direction Z. This can further improve the adaptability of the battery device 100 to different electrical equipment, and can also reduce the position accuracy requirements of the mounting member 122 and the load bearing structure L of the electrical equipment during production, thereby reducing costs.

[0127] Reference Figure 4 In some embodiments, the first bracket 11 is further provided with a bracket mounting portion 114 for arranging a pipeline fixing bracket, for connecting with the fixing bracket of the external pipeline.

[0128] ​The pipeline can refer to a pipe and / or a cable, for example, a pipe for refrigeration or heating and / or a cable for electrical connection. The pipeline can be led out from the corner via the pipeline fixing bracket mounted on the bracket mounting portion 114, or can be led out from other positions and be arranged at the pipeline fixing bracket. The bracket mounting portion 114 can be, for example, a protruding rivet stud.

[0129] In the present embodiment, the bracket mounting portion 114 is provided on the first bracket 11, which is conducive to the installation and arrangement of the pipeline at the first bracket 11 (i.e., the corner of the box 10), and makes the pipeline arrangement more reasonable and reduces the risk of interference with other structures.

[0130] Reference Figure 4 In some embodiments, the first bracket 11 is further provided with a grounding member 115 for connecting the grounding wire of the battery device.

[0131] The grounding member 115 can include a grounding nut for connecting the grounding wire of the battery device 100.

[0132] In the present embodiment, the grounding member 115 is provided on the first bracket 11, which is conducive to further utilizing the space of the first bracket 11. Moreover, it provides conditions for leading out the grounding wire from the corner, which is conducive to improving the interference with other structures.

[0133] As Figure 4 shown, the bracket mounting portion 114 and the grounding member 115 can be provided on the first surface 111 to reduce the possibility of interference with the hoisting tool H cooperating with the hoisting structure 113 provided on the second surface 112.

[0134] Figure 8 is a structural schematic view of the first bracket according to some embodiments of the battery device of the present disclosure.

[0135] Reference Figure 5 and Figure 8 In some embodiments, the first bracket 11 has a protruding portion 116 for fitting with the box 10, which includes a portion protruding on the opposite side surface of the first surface 111 and / or a portion protruding on the opposite side surface of the second surface 112.

[0136] The fitting of the protruding portion 116 with the box 10 means that the outer contour shape of the protruding portion 116 can match the outer contour shape of the box 10, so that the protruding portion 116 can function as a latch. The way of fixedly connecting the protruding portion 116 with the box 10 can be, for example, welding.

[0137] In the embodiment, the protruding portion 116 is embedded with the box body 10. Since the mounting assembly 1 has the functions of hoisting and mounting, it needs to bear a larger force, and the protruding portion 116 is beneficial to increase the connection strength between the first support 11 and the box body 10, thereby improving the connection reliability between the mounting assembly 1 and the box body 10, and the existence of the protruding portion 116 reduces the difficulty of positioning when the first support 11 and the box body 10 are assembled.

[0138] Meanwhile, the protruding portion 116 includes a portion protruding on the opposite side surface of the first surface 111 and / or a portion protruding on the opposite side surface of the second surface 112. Compared with the scheme that the mounting assembly 1 is connected with the box body 10 by using a plane, the protruding portion 116 can bear the force acting on the mounting assembly 1 during mounting and hoisting by using the embedded connection relationship, improve the stress condition of the mounting assembly 1, reduce the risk of damage of the mounting assembly 1, and improve the reliability of the battery device 100.

[0139] Reference Figure 3 , Figure 4 and Figure 8 In some embodiments, the box body 10 includes a first beam and a second beam connected with the mounting assembly 1, the first beam extends along a first direction X, the second beam extends along a second direction Y, an outer normal line of the first surface 111 is parallel to the first direction X, and an outer normal line of the second surface 112 is parallel to the second direction Y, wherein the first direction X and the second direction Y are mutually perpendicular horizontal directions, the protruding portion 116 is embedded with at least one of the first beam and the second beam and is fixedly connected with the first beam and the second beam, an extension direction of the portion of the protruding portion 116 protruding on the opposite side surface of the first surface 111 is parallel to an extension direction of the first beam, and an extension direction of the portion of the protruding portion 116 protruding on the opposite side surface of the second surface 112 is parallel to an extension direction of the second beam.

[0140] In the embodiment, the first beam extends along the first direction X, the second beam extends along the second direction Y, the extension direction of the portion of the protruding portion 116 protruding on the opposite side surface of the first surface 111 is parallel to the extension direction of the first beam, and the extension direction of the portion of the protruding portion 116 protruding on the opposite side surface of the second surface 112 is parallel to the extension direction of the second beam, so that the protruding portion 116 can be more easily assembled with the first beam and the second beam.

[0141] Based on the above various embodiments of the battery device 100, the embodiments of the present disclosure provide a power utilization device including the foregoing battery device 100. The power utilization device adopting the embodiments of the battery device 100 has good reliability.

[0142] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0143] The following is for reference. Figure 4 and Figure 8 A specific embodiment of the battery device disclosed herein will be described.

[0144] The battery device 100 includes a housing 10, at least one battery cell 20, and a mounting assembly 1. The housing 10 has a receiving space, within which at least one battery cell 20 is located. The mounting assembly 1 is disposed on the outer periphery of the housing 10 for mounting the housing 10 to a load-bearing structure L of an electrical device. The mounting assembly 1 includes a first bracket 11 and a second bracket 12. The first bracket 11 is fixedly connected to the housing 10 and has a lifting structure 113 for lifting the housing 10. The second bracket 12 is fixedly connected to both the housing 10 and the first bracket 11 and has a mounting element 122. The first bracket 11 has a first surface 111 and a second surface 112, where the outer normal of the first surface 111 intersects the outer normal of the second surface 112. The second bracket 12 is fixedly connected to the first surface 111, and the lifting structure 113 is disposed on the second surface 112. The mounting assembly 1 is disposed at two corners of the housing 10 on the same side along a first direction X.

[0145] In a plane perpendicular to the extension direction of the second bracket 12 relative to the housing 10, the mounting member 122 is floatable relative to the housing 10.

[0146] The second bracket 12 includes a pair of ear plates 123 and a locking bolt 124. The pair of ear plates 123 are fixedly connected to the housing 10 and the first bracket 11, respectively, and the mounting member 122 is sandwiched between the pair of ear plates 123. The locking bolt 124 passes through the mounting member 122 and the ear plates 123, and there is a fitting gap between the mounting member 122, the ear plates 123 and the locking bolt 124. The locking bolt 124 has a locked state and an unlocked state. In the locked state, the locking bolt 124 presses against the ear plates 123 to constrain the ear plates 123, thereby locking the mounting member 122. In the unlocked state, the locking bolt 124 releases the pressure on the ear plates 123, thereby allowing the mounting member 122 to float relative to the housing 10. The second bracket 12 also includes a connecting plate 121, which is disposed between the pair of ear plates 123 and is integrally formed with the pair of ear plates 123.

[0147] The mounting component 122 is provided with a waist-shaped mounting hole 1221, and the length direction of the waist-shaped mounting hole 1221 is set to be parallel to the extension direction of the second bracket 12 relative to the box 10.

[0148] The first bracket 11 is further provided with a bracket mounting portion 114 for mounting a pipeline fixing bracket, for connecting with a fixing bracket of an external pipeline. The first bracket 11 is further provided with a grounding member 115, for connecting with a grounding wire of the battery device.

[0149] The first bracket 11 has a protruding portion 116 for fitting with the box 10, the protruding portion 116 including a portion protruding from the opposite side surface of the first surface 111 and a portion protruding from the opposite side surface of the second surface 112.

[0150] The box 10 includes a first beam and a second beam connected with the mounting assembly 1, the first beam extending along a first direction X, and the second beam extending along a second direction Y, an outer normal line of the first surface 111 being parallel to the first direction X, and an outer normal line of the second surface 112 being parallel to the second direction Y, wherein the first direction X and the second direction Y are mutually perpendicular horizontal directions, the protruding portion 116 fitting with both the first beam and the second beam and being fixedly connected with the first beam and the second beam, an extension direction of the portion of the protruding portion 116 protruding from the opposite side surface of the first surface 111 being parallel to an extension direction of the first beam, and an extension direction of the portion of the protruding portion 116 protruding from the opposite side surface of the second surface 112 being parallel to an extension direction of the second beam.

[0151] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent replacements can be made to some technical features without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A battery device, characterized by, The battery pack includes: a box (10) having a containing space; at least one battery cell (20) located in the containing space; and a mounting assembly (1) provided on the outer periphery of the box (10) and used for mounting the box (10) to a load-bearing structure (L) of an electrical device; wherein the mounting assembly (1) includes a first bracket (11) and a second bracket (12), the first bracket (11) is fixedly connected with the box (10), the first bracket (11) is provided with a hoisting structure (113) used for hoisting the box (10), and the second bracket (12) is fixedly connected with the box (10) and the first bracket (11) and is provided with a mounting piece (122). The first bracket (11) has a first surface (111) and a second surface (112), an outer normal line of the first surface (111) and an outer normal line of the second surface (112) intersect, the second bracket (12) is fixedly connected with the first surface (111), and the hoisting structure (113) is arranged on the second surface (112). The first bracket (11) has a protruding portion (116) used for being embedded with the box (10), the protruding portion (116) includes a portion protruding on the opposite side surface of the first surface (111) and / or a portion protruding on the opposite side surface of the second surface (112). The mounting assembly (1) is arranged at at least one corner of the box (10).

2. The battery device of claim 1, wherein In a plane perpendicular to the extension direction of the second bracket (12) relative to the box (10), the mounting piece (122) is floatable relative to the box (10).

3. The battery device of claim 1, wherein The second bracket (12) includes:

4. The battery device of claim 3, wherein a pair of ear plate pieces (123) fixedly connected with the box (10) and the first bracket (11) respectively, and the mounting piece (122) is clamped between the pair of ear plate pieces (123); and a locking bolt (124) penetrating the mounting piece (122) and the ear plate piece (123), at least one of the mounting piece (122) and the ear plate piece (123) and the locking bolt (124) are provided with a matching gap, and the locking bolt (124) has a locked state and an unlocked state; wherein in the locked state, the locking bolt (124) extrudes the ear plate piece (123) to constrain the ear plate piece (123) to lock the mounting piece (122); and in the unlocked state, the locking bolt (124) releases the extrusion on the ear plate piece (123), so that the mounting piece (122) is floatable relative to the box (10). The second bracket (12) further includes a connecting plate (121) arranged between the pair of ear plate pieces (123) and integrally formed with the pair of ear plate pieces (123).

5. The battery device of claim 4, wherein ​ 6. The battery device of claim 3, wherein The mounting piece (122) is provided with a waist-shaped mounting hole (1221), a length direction of the waist-shaped mounting hole (1221) is arranged parallel to an extension direction of the second support (12) relative to the box body (10).

7. The battery device of claim 1, wherein The first support (11) is further provided with a support mounting portion (114) for arranging a pipeline fixing support, for connecting with a fixing support of an external pipeline.

8. The battery device of claim 1, wherein The first support (11) is further provided with a grounding piece (115), for connecting with a grounding wire of the battery device.

9. The battery device of claim 1, wherein, The box body (10) comprises a first beam and a second beam connected with the mounting assembly (1), the first beam extends along a first direction (X), the second beam extends along a second direction (Y), an outer normal line of the first surface (111) is parallel to the first direction (X), an outer normal line of the second surface (112) is parallel to the second direction (Y), wherein the first direction (X) and the second direction (Y) are mutually perpendicular horizontal directions; The protruding portion (116) is embedded with and fixedly connected with at least one of the first beam and the second beam, an extension direction of a portion of the protruding portion (116) protruding on an opposite side surface of the first surface (111) is parallel to an extension direction of the first beam, and an extension direction of a portion of the protruding portion (116) protruding on an opposite side surface of the second surface (112) is parallel to an extension direction of the second beam.

10. An electric device, characterized by A battery device comprising any one of claims 1-9.

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