Battery device and electric equipment

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a battery device and electric equipment.The battery device comprises a box body, a battery monomer assembly, a battery management device, a wire harness assembly and a support, the box body is provided with a containing space, and the battery monomer assembly and the battery management device are arranged in the containing space; the battery monomer assembly is electrically connected with the battery management device through the wire harness assembly, the bracket is fixed on the box body, the wire harness assembly comprises a plurality of first terminals, and the plurality of first terminals are fixed on the bracket and are electrically connected with the battery monomer assembly or the battery management device. During assembly, the support is connected with the box body, so that connection and fixation of the wire harness assembly and the box body are realized, the plurality of first terminals in the wire harness assembly are respectively fixed on the support, the procedure of fixing the first terminals one by one is reduced, the convenience in the assembly process is improved, and the assembly efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery device and electrical equipment. Background Technology

[0002] With the development of new energy sources, more and more fields are adopting new energy as a power source. Due to its advantages such as high energy density, rechargeability, safety, and environmental friendliness, battery devices are widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields.

[0003] The battery assembly includes a housing, individual battery cells, and a battery management device. During the assembly process, the individual battery cells are placed inside the housing, and the battery management device is then connected to the individual battery cells via multiple wiring harnesses. The terminals of each wiring harness need to be fixed one by one, making the entire assembly process cumbersome and inefficient. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and electrical equipment that solves the problem of cumbersome assembly process and low assembly efficiency.

[0005] The first aspect of this application discloses a battery device, the battery device comprising:

[0006] The container has storage space;

[0007] The battery cell assembly and the battery management device are respectively housed within the receiving space;

[0008] The wiring harness assembly and the battery cell assembly are electrically connected to the battery management device through the wiring harness assembly;

[0009] The bracket is fixed to the housing, and the wiring harness assembly includes multiple first terminals, which are fixed to the bracket and electrically connected to the battery cell assembly or battery management device.

[0010] During assembly, the wiring harness assembly is connected to the housing via a bracket, thus fixing the wiring harness assembly to the housing. Multiple first terminals in the wiring harness assembly are fixed on the bracket, reducing the need to fix each first terminal individually, improving the convenience of the assembly process, and increasing assembly efficiency.

[0011] In some embodiments of this application, the accommodating space includes a first subspace and a second subspace, and the box body includes a first part, a second part and a third part. The first part includes a communication port, the second part is fastened to the first part to enclose the first subspace, and the third part is fastened to the side of the first part away from the second part. The third part and the first part enclose the second subspace, and the first subspace is connected to the second subspace through the communication port.

[0012] The bracket is installed in the first subspace and fixedly connected to the first part or the second part, while the battery management device is installed in the second subspace.

[0013] The second subspace is used to house the battery management device. When the battery management device needs to be inspected or repaired, only the second space needs to be opened, which improves the convenience of the inspection or repair process.

[0014] In some embodiments of this application, along a first direction, the first portion is disposed on top of the second portion;

[0015] The battery cell assembly includes at least one battery cell. The battery cell includes a first surface and a pressure relief mechanism disposed on the first surface. The pressure relief mechanism is disposed toward the first part along a first direction. The bracket is connected to the second part. The arrangement direction of the first part and the second part is consistent with the first direction.

[0016] With this configuration, during assembly, multiple first terminals of the wiring harness assembly are simultaneously connected to the second part of the housing via brackets. This reduces the need to fix the first terminals one by one, thus improving assembly efficiency.

[0017] In some embodiments of this application, along a first direction, the first portion is disposed on top of the second portion;

[0018] The battery cell assembly includes at least one battery cell, the battery cell includes a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism is disposed toward a second part, and a bracket is connected to the first part.

[0019] With this configuration, during assembly, multiple first terminals of the wiring harness assembly are simultaneously connected to the first part of the housing via brackets. This reduces the need to fix the first terminals one by one, thus improving assembly efficiency.

[0020] In some embodiments of this application, the housing further includes first fasteners, and the first part and the second part are detachably connected by a plurality of first fasteners. This arrangement facilitates disassembly between the first part and the second part of the housing, thereby improving the convenience of maintenance and replacement.

[0021] In some embodiments of this application, the housing further includes second fasteners, and the first and third parts are detachably connected by a plurality of second fasteners. This arrangement facilitates disassembly between the first and third parts of the housing, thereby improving the convenience of maintenance and replacement.

[0022] In some embodiments of this application, the housing further includes a first seal, which is sealed at the junction of the first and second parts. This arrangement improves the sealing performance at the junction of the first and second parts, reducing the adverse effects of the external environment on the components within the first subspace.

[0023] In some embodiments of this application, the housing further includes a second seal, which is disposed at the joint between the first and third parts. This arrangement improves the sealing performance at the joint between the first and third parts, reducing the adverse effects of the external environment on the components within the second subspace.

[0024] In some embodiments of this application, the wire harness assembly includes:

[0025] The wiring harness body is fixed on the bracket or spaced apart from the bracket, and multiple first terminals are connected to one end of the wiring harness body and electrically connected to the battery management device.

[0026] Multiple second terminals are connected to the other end of the harness body and electrically connected to the battery cell assembly.

[0027] This design facilitates the connection between the battery management device and the wiring harness assembly, thereby improving assembly convenience and production efficiency.

[0028] In some embodiments of this application, the battery device further includes a flexible electrical connector, through which the battery management device is electrically connected to a plurality of first terminals. This arrangement allows the battery management device to effectively connect to the wiring harness assembly while enabling flexible layout and installation.

[0029] In some embodiments of this application, the flexible electrical connection includes:

[0030] main body;

[0031] The first connection terminal is located at one end of the main body and is plugged into the battery management device.

[0032] The second connecting terminal is located at the other end of the main body and is plugged into the first terminal.

[0033] This plug-in design improves the convenience of the assembly process and increases assembly efficiency.

[0034] In some embodiments of this application, the first terminal is a female connector and the second connection terminal is a male connector. This arrangement increases the contact area between the first terminal and the bracket, thereby increasing the strength of the connection between the first terminal and the bracket.

[0035] In some embodiments of this application, the second terminal is a female connector. This configuration facilitates the insertion and mating of the second terminal with the battery cell assembly, improving assembly convenience.

[0036] In some embodiments of this application, the first connection terminal is a male connector. This arrangement facilitates the insertion and mating of the flexible electrical connector with the battery management device, improving assembly convenience.

[0037] In some embodiments of this application, the flexible electrical connector is a flexible circuit board. This arrangement can adapt to the layout of the battery management device, facilitating the connection between the battery management device and the first terminal and improving the ease of connection.

[0038] In some embodiments of this application, multiple first terminals are connected to the bracket by adhesive bonding. This configuration is simple in structure, easy to implement, and improves the efficiency of fixing the first terminals to the bracket.

[0039] In some embodiments of this application, the bracket is an epoxy resin board. This arrangement increases the contact area between the first terminal and the bracket, thereby improving the fixing strength of the first terminal.

[0040] In some embodiments of this application, the epoxy resin board is a one-piece structure, with multiple first terminals disposed on the same side of the epoxy resin board or dispersed on opposite sides of the epoxy resin board. This arrangement allows for the simultaneous fixing of multiple first terminals by fixing the epoxy resin board, effectively improving assembly efficiency.

[0041] In some embodiments of this application, the epoxy resin board includes multiple board bodies, and multiple first terminals are distributed on the multiple board bodies. This arrangement facilitates adaptation to the installation location and improves the ease of installation.

[0042] In some embodiments of this application, the bracket is provided with a connection hole, and the battery device further includes a fastening component. The connecting end of the fastening component passes through the connection hole and connects to the housing to fix the bracket to the housing. This arrangement improves the connection strength between the bracket and the housing and enhances the stability of the wiring harness assembly.

[0043] A second aspect of this application provides an electrical device comprising a battery device as described above.

[0044] During battery assembly, the wiring harness assembly is connected to the housing via a bracket, which secures the wiring harness assembly to the housing. Multiple first terminals in the wiring harness assembly are fixed to the bracket, reducing the need to fix each first terminal individually, improving the convenience of the assembly process, and thus increasing assembly efficiency.

[0045] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0046] Figure 1 A schematic diagram of the structure of a vehicle according to one embodiment of this application is shown.

[0047] Figure 2 A schematic diagram of the structure of a battery device according to one embodiment of this application is shown.

[0048] Figure 3 A schematic diagram of the structure of a battery device according to one embodiment of this application is shown.

[0049] Figure 4 for Figure 3 An enlarged structural diagram of point A of the battery device shown;

[0050] Figure 5 for Figure 3 A schematic diagram of the exploded structure of the battery device shown;

[0051] Figure 6 for Figure 5 An enlarged structural diagram of the battery device at point B shown;

[0052] Figure 7 for Figure 6 A schematic diagram of the electrical connection assembly shown;

[0053] Figure 8 for Figure 7 The diagram shows a partial structural schematic of the electrical connection assembly.

[0054] The attached figures are labeled as follows:

[0055] 1000, vehicles;

[0056] 100. Battery assembly; 200. Controller; 300. Motor;

[0057] 10. Battery cell modules;

[0058] 11. Battery cell;

[0059] 20. Box body;

[0060] 21. First part; 211. Connecting port; 22. Second part; 23. Third part; 24. Containing space; 241. First subspace; 242. Second subspace;

[0061] 30. Battery management device;

[0062] 40. Flexible electrical connectors;

[0063] 41. First connecting terminal; 42. Main body; 43. Second connecting terminal;

[0064] 50. Wiring harness assembly;

[0065] 51. First terminal; 52. Wiring harness body; 53. Second terminal;

[0066] 60. Bracket;

[0067] 61. Connecting hole;

[0068] 70. Fastening components;

[0069] X, the first direction. Detailed Implementation

[0070] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0072] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0073] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0074] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0075] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0076] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0077] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0078] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0079] In related technologies, during the assembly of battery devices, individual battery cells are placed inside a housing, and the battery management device is connected to the individual battery cells via multiple wiring harnesses. The entire assembly process is cumbersome and inefficient.

[0080] In this application, the battery device includes a housing, a battery cell assembly, a battery management device, a wiring harness assembly, and a bracket. The housing has a receiving space, within which the battery cell assembly and the battery management device are respectively housed. The battery cell assembly is electrically connected to the battery management device via the wiring harness assembly. The bracket is fixed to the housing. The wiring harness assembly includes multiple first terminals, which are fixed to the bracket and electrically connected to either the battery cell assembly or the battery management device. During assembly, the connection between the bracket and the housing achieves the connection and fixation of the wiring harness assembly to the housing. The multiple first terminals in the wiring harness assembly are respectively fixed to the bracket, reducing the need for individual fixing of the first terminals, improving the convenience of the assembly process, and thus increasing assembly efficiency.

[0081] The technical solutions described in this application are not limited to the devices described above, but can also be applied to all devices that use battery devices. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0082] For example, such as Figure 1 The diagram shown is a structural schematic of a vehicle according to one embodiment of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle 1000 may contain a motor 300, a controller 200, and a battery device 100. The controller 200 controls the battery device 100 to supply power to the motor 300. For example, the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can serve as the operating power source for the vehicle 1000's electrical system, such as meeting the power requirements for starting, navigation, and operation of the vehicle 1000. In another embodiment of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to the vehicle 1000.

[0083] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 10 for providing voltage and capacity. The battery cell assembly 10 may include multiple battery cells 11, which are connected in series, parallel, or mixed connection via a busbar.

[0084] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0085] As an example, the battery cell assembly 10 can be a battery module, which is formed by arranging and fixing multiple battery cells 11 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 11 together with cable ties.

[0086] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which includes a housing 20 and one or more battery cell assemblies 10, with the battery cell assemblies 10 housed in the housing 20.

[0087] As an example, the battery cell assembly 10 can be a battery module, and the battery cell assembly 10 can be housed in the housing 20 by fixing the battery module in the housing 20.

[0088] As an example, the battery cell assembly 10 can also be housed in the housing 20 by directly fixing multiple battery cells 11 to the housing 20.

[0089] As an example, such as Figure 2 As shown, the housing 20 may include a first part 21 and a second part 22. The first part 21 and the second part 22 are fastened together to form a closed space inside the housing 20 to house the battery cell assembly 10. Here, "closed" refers to covering or closing, which can be sealed or unsealed. The first part 21 may be a top cover or a bottom plate.

[0090] As an example, the housing 20 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 20 forms an enclosed space to accommodate the battery cell assembly 10.

[0091] In some embodiments, the housing 20 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 20 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 20 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0092] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 11, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0093] In some embodiments of this application, the battery cell 11 can be a secondary battery, which refers to a battery cell 11 that can be used again after being discharged by recharging to activate the active material.

[0094] The battery cell 11 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0095] As an example, the battery cell 11 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0096] The electrode assembly includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the negative and positive electrodes. During the charging and discharging process of the battery cell 11, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, serves to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0097] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0098] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0099] As an example, the positive current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0100] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium phosphate include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium iron manganese phosphate, and lithium iron manganese phosphate and carbon composites. Examples of lithium transition metal oxides include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, and lithium nickel cobalt manganese oxide (such as LiNi). 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (also known as NCM) 333 LiNi 0.5 Co 0.2 Mn 0.3 O2 (also known as NCM) 523 LiNi 0.5 Co 0.25 Mn 0.25 O2 (also known as NCM) 211 LiNi 0.6 Co 0.2 Mn 0.2 O2 (also known as NCM) 622 LiNi 0.8 Co 0.1 Mn 0.1 O2 (also known as NCM) 811 ), lithium nickel cobalt aluminum oxide (such as LiNi) 0.8 Co 0.15 Al 0.05 At least one of O2 and its modified compounds. Modified compounds refer to substances obtained by modification methods such as doping or coating based on the above-mentioned substances.

[0101] In some embodiments, the positive electrode can be a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. When foamed metal is used as the positive electrode, the surface of the foamed metal may or may not contain a positive electrode active material. As an example, a positive electrode active material is filled and / or deposited within the foamed metal.

[0102] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0103] As an example, the negative electrode current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material substrate and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0104] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0105] As an example, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0106] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cell 11. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials for battery cell 11 may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0107] In some embodiments, the negative electrode can be a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. When foamed metal is used as the negative electrode sheet, the surface of the foamed metal may or may not have a negative electrode active material.

[0108] As an example, negative electrode active materials can be filled or / and deposited within the negative electrode current collector.

[0109] In some embodiments, the positive current collector can be made of aluminum, and the negative current collector can be made of copper.

[0110] In some embodiments, the electrode assembly further includes an isolator disposed between the positive and negative electrodes.

[0111] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0112] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a single component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes. An inorganic particle coating, an organic particle coating, or an organic / inorganic composite coating can also be applied to the surface of the separator.

[0113] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0114] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0115] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0116] In some implementations, the electrode assembly is a stacked structure.

[0117] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0118] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0119] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0120] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0121] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0122] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0123] In some embodiments, the electrode assembly has tabs on its plates that allow current to be drawn out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0124] In some embodiments, a pressure relief mechanism is provided on the casing. The pressure relief mechanism is used to release the internal gas of the battery cell 11.

[0125] As an example, the internal pressure or temperature of the battery cell 11 is actuated to release the internal pressure or temperature when it reaches a predetermined threshold. When the internal pressure or temperature of the battery cell 11 reaches the predetermined threshold, the pressure relief mechanism is activated or a weak structure in the pressure relief mechanism is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. The threshold design varies depending on the design requirements. The threshold may depend on the materials of one or more of the positive electrode, negative electrode, electrolyte, and separator in the battery cell 11.

[0126] As an example, the pressure relief mechanism can be integrally molded with the housing.

[0127] As an example, the pressure relief mechanism can also be separately installed and connected to the housing.

[0128] The term "actuation" as used in this application refers to the pressure relief mechanism being activated or undergoing a certain state, thereby releasing the internal pressure and temperature of the battery cell 11. The actions of the pressure relief mechanism may include, but are not limited to: movement of components within the pressure relief mechanism to form an exhaust channel, rupture, breakage, tearing, or opening of at least a portion of the pressure relief mechanism, etc. When the pressure relief mechanism is actuated, the high-temperature, high-pressure substances inside the battery cell 11 are discharged outwards from the actuated portion as waste. This method enables the battery cell 11 to release pressure and temperature under controllable pressure or temperature conditions, thereby reducing the potential for more serious accidents.

[0129] In some embodiments, when the housing is a non-sealed structure, the pressure relief mechanism can be configured as a through hole for discharging gas inside the battery cell 11.

[0130] The emissions from the battery cell 11 mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0131] The positive and negative electrodes can be drawn from the same end of the electrode plate, or they can be drawn from opposite ends of the electrode plate.

[0132] The structures of the positive and negative electrode tabs can be the same or different. Taking the positive electrode tab as an example, the positive electrode tab can include multiple positive electrode tab layers, which are stacked together to form the positive electrode tab. The positive electrode tab can include at least two parts: one part is located between the main body of the electrode sheet and the insulating component, and the other part is located between the insulating component and the electrode lead-out component.

[0133] The insulating component can insulate at least part of the tab from the end face of the main body, thereby reducing the risk of the tab being inserted into the main body when the battery cell 11 is affected by external impacts, vibrations, etc., thereby reducing the risk of short circuit in the battery cell 11 and improving the reliability of the battery cell 11.

[0134] The insulating component can be a one-piece structure or a modular structure. As one example, the insulating component is composed of multiple independently formed parts connected together. As another example, the insulating component is formed as a single piece by stamping.

[0135] For example, the insulating part is made of plastic. The insulating part is integrally molded by injection molding. Plastic parts are easy to process and have low manufacturing costs.

[0136] In some embodiments of this application, the housing includes a shell and an end cap, the shell having an opening, the end cap being connected to the shell and closing the opening, the end cap forming a first sidewall, and a pressure relief mechanism being disposed on the end cap.

[0137] In some embodiments of this application, the outer casing can be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc. In some embodiments, the outer casing can be a sealed structure or a non-sealed structure. As an example, when the outer casing is a non-sealed structure, the outer casing serves to protect the electrode assembly, and a sealing bag is included between the outer casing and the electrode assembly. The sealing bag is used to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag can be a bag-shaped insulating component or an aluminum-plastic film. When the outer casing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte. The casing may have one or more openings. End caps may also be provided one or more.

[0138] In addition, the connection methods between the end cap and the housing include, but are not limited to, snap-fit, adhesive, welding or connection via connectors.

[0139] In some embodiments of this application, the battery cell 11 further includes electrode terminals, which are disposed on the end cap and electrically connected to the electrode assembly. The electrode terminals are electrically connected to the tabs of the electrode assembly. The electrode terminals can be directly connected to the tabs or indirectly connected to the tabs through a current collector. The electrode terminals can be disposed on the end cap or on the housing. In the embodiments shown in this application, the electrode terminals are disposed on the end cap.

[0140] like Figures 3 to 8As shown, in some embodiments of this application, a battery device 100 is proposed. The battery device 100 includes a housing 20, a battery cell assembly 10, a battery management device 30, a wiring harness assembly 50, and a bracket 60. The housing 20 has a receiving space 24. The battery cell assembly 10 and the battery management device 30 are respectively disposed in the receiving space 24. The battery cell assembly 10 is electrically connected to the battery management device 30 through the wiring harness assembly 50. The bracket 60 is fixed on the housing 20. The wiring harness assembly 50 includes a plurality of first terminals 51. The plurality of first terminals 51 are fixed on the bracket 60 and electrically connected to the battery cell assembly 10 or the battery management device 30.

[0141] Specifically, the receiving space 24 is formed inside the housing 20. During the assembly process, the battery cell assembly 10 is placed inside the receiving space 24. The battery cell assembly 10 is fixed inside the receiving space 24. The fixing methods include, but are not limited to, adhesive fixing, snap-fit ​​fixing, or fixing through connectors.

[0142] The shape of the housing 24 is adapted to the shape of the battery cell assembly 10, thereby improving the space utilization within the housing 20 and increasing the energy density of the battery device 100.

[0143] The battery management device 30 can also be called a battery management system (BMS). For example, it can be a low-voltage circuit signal management device. The battery management device 30 is used to manage the battery device 100, such as safety protection (overcharge protection, over-discharge protection, overcurrent / short circuit protection, temperature protection, insulation monitoring), state estimation (state of charge (SOC), state of health (SOH), state of power (SOP), and remaining useful life (RUL)), charge and discharge control, thermal management coordination, and communication and diagnostics, etc.

[0144] The wiring harness assembly 50 electrically connects the battery management device 30 to the battery cell assembly 10, so that the battery management device 30 and the battery cell assembly 10 can obtain the current status information of the battery cell assembly 10, so as to realize the management of the battery cell assembly 10.

[0145] In the wiring harness assembly 50, a plurality of first terminals 51 are used for electrical connection with the battery cell assembly 10 or the battery management device 30. The number of first terminals 51 can be two, three, four, five, six, seven, eight, nine, ten, etc.

[0146] Among the multiple first terminals 51, different first terminals 51 may have the same function or different functions.

[0147] Multiple first terminals 51 are mounted on the same bracket 60. The bracket 60 serves as a carrier for the multiple first terminals 51. The bracket 60 is connected to the housing 20, which enables the multiple first terminals 51 to be connected and fixed to the housing 20 at the same time. This reduces the process of fixing the first terminals 51 one by one, improves the convenience of the assembly process, and enhances the assembly efficiency.

[0148] It should be understood that multiple first terminals 51 are connected to the bracket 60 respectively. The multiple first terminals 51 can be located on the same side of the bracket 60 or on different sides of the bracket 60.

[0149] Multiple first terminals 51 are arranged on the bracket 60 in a preset order so that the first terminals 51 can be distinguished, thereby further improving the efficiency of the connection of the first terminals 51.

[0150] In some embodiments of this application, such as Figures 3 to 6 As shown, the accommodating space 24 includes a first subspace 241 and a second subspace 242. The housing 20 includes a first part 21, a second part 22, and a third part 23. The first part 21 includes a connecting opening 211. The second part 22 is fastened to the first part 21 to enclose the first subspace 241. The third part 23 is fastened to the side of the first part 21 opposite to the second part 22, and the third part 23 and the first part 21 enclose the second subspace 242. The first subspace 241 is connected to the second subspace 242 through the connecting opening 211. A bracket 60 is installed inside the first subspace 241 and fixedly connected to either the first part 21 or the second part 22. The battery management device 30 is installed inside the second subspace 242.

[0151] Specifically, the second part 22 and the third part 23 are located on opposite sides of the first part 21. The second part 22 is interlocked with the first part 21, and the second part 22 and the first part 21 enclose a first subspace 241, within which the battery cell assembly 10 is disposed. The third part 23 is interlocked with the first part 21, and the third part 23 and the first part 21 enclose a second space, within which the battery management device 30 is disposed. At the connection port 211, the wiring harness assembly 50 electrically connects the battery management device 30 to the battery cell assembly 10.

[0152] The battery management device 30 and the battery cell assembly 10 are located in different spaces. The battery management device 30 is accommodated by the second subspace 242. When the battery management device 30 needs to be inspected or repaired, only the second subspace 242 needs to be opened, without disassembling the entire battery device 100, which improves the convenience of the inspection or repair process.

[0153] It should be noted that the connecting port 211 is opened on the first part 21, and the third part 23 is fastened to the first part 21. The orthographic projection of the third part 23 on the first part 21 is within the area of ​​the first part 21 and can cover the entire connecting port 211. In this way, the connecting port 211 can be closed.

[0154] For example, the first part 21 is a plate-shaped part, the second part 22 is a component with a first groove, and the third part 23 is a component with a second groove. The first part 21 is disposed on the side of the second part 22 with the first groove and closes the opening of the first groove. The side of the third part 23 with the second groove abuts against the first part 21 and closes the opening of the second groove through the first part 21.

[0155] In some embodiments of this application, such as Figures 3 to 6 As shown, along the first direction X, the first part 21 is disposed on top of the second part 22. The battery cell assembly 10 includes at least one battery cell, the battery cell includes a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism is disposed towards the first part 21 along the first direction X, the bracket 60 is connected to the second part 22, and the arrangement direction of the first part 21 and the second part 22 is consistent with the first direction X.

[0156] Specifically, when assembling the battery device 100, the battery cell assembly 10 is first placed in the second part 22 (the second part 22 has a first groove structure, and the battery cell assembly 10 is placed in the first groove assembly), then the wiring harness assembly 50 is connected to the battery cell assembly 10, then the bracket 60 is fixed in the second part 22, then the first part 21 is fixed to the second part 22 (the first part 21 closes the opening of the first groove) and the communication port 211 of the first part 21 is positioned opposite to the first terminal 51 of the wiring harness assembly 50, then the battery management device 30 is connected to the first terminal 51 at the communication port 211, and finally the third part 23 is connected to the first part 21 so that the battery management device 30 is placed in the second subspace 242.

[0157] During assembly, the bracket 60 is connected and fixed to the second part 22, and multiple first terminals 51 of the wire harness assembly 50 are simultaneously connected to the second part 22 of the housing 20 through the bracket 60. This reduces the process of fixing the first terminals 51 one by one, thereby improving the assembly efficiency.

[0158] In some embodiments of this application, such as Figures 3 to 6 As shown, along the first direction X, the first part 21 is disposed on top of the second part 22. The battery cell assembly 10 includes at least one battery cell, the battery cell includes a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism is disposed toward the second part 22, and the bracket 60 is connected to the first part 21.

[0159] Specifically, when assembling the battery device 100, the bracket 60 is first fixed to the first part 21, the battery cell assembly 10 is fixed to the first part 21 (the first part 21 is used to enclose the surface of the first subspace 241 with the second part 22), the wiring harness assembly 50 is connected to the battery cell assembly 10, the second part 22 is then fastened to the first part 21 (the first part 21 and the second part 22 enclose the first subspace 241, and the battery cell assembly 10 and the wiring harness assembly 50 are disposed in the first subspace 241), the first part 21 and the second part 22 are then flipped over as a whole, the battery management device 30 is then connected to the first terminal 51 at the position of the communication port 211, and finally the third part 23 is connected to the first part 21 so that the battery management device 30 is placed in the receiving space.

[0160] During assembly, the bracket 60 is connected and fixed to the second part 22, and multiple first terminals 51 of the wire harness assembly 50 are simultaneously connected to the first part 21 of the housing 20 through the bracket 60. This reduces the process of fixing the first terminals 51 one by one, thereby improving the efficiency of assembly.

[0161] In some embodiments of this application, the housing 20 further includes a first fastener (not shown in the figure), and the first part 21 and the second part 22 are detachably connected by a plurality of first fasteners.

[0162] Specifically, when assembling the first part 21 and the second part 22, the first part 21 and the second part 22 are fastened together, and then the first fastener is used to fasten the first part 21 and the second part 22 together to achieve the connection between the first part 21 and the second part 22.

[0163] The number of first fasteners is multiple, and the multiple first fasteners are arranged around the circumference of the first part 21 (i.e., along the extension direction of the joint position of the first part 21 and the second part 22). The first fasteners can be arranged at intervals or without intervals.

[0164] The first part 21 and the second part 22 are connected and fixed by the first fastener, which facilitates the disassembly of the first part 21 and the second part 22 of the housing 20, thereby improving the convenience of maintenance and replacement.

[0165] It should be noted that the first fastener can be a bolt or a fastening clip, etc.

[0166] For example, the first fastener is a bolt, and through holes are respectively opened on the first part 21 and the second part 22. After the bolt passes through the through hole, the nut is locked in place. In this way, the connection and fixation of the first part 21 and the second part 22 can be achieved.

[0167] In some embodiments of this application, the housing 20 further includes a second fastener (not shown in the figure), and the first part 21 and the third part 23 are detachably connected by a plurality of second fasteners.

[0168] Specifically, when assembling the first part 21 and the third part 23, the first part 21 and the third part 23 are fastened together, and then the first part 21 and the third part 23 are fastened together using a second fastener to achieve the connection between the first part 21 and the third part 23.

[0169] The number of second fasteners is multiple, and the multiple second fasteners are arranged around the circumference of the third part 23 (i.e., along the extension direction of the joint position of the third part 23 and the first part 21). The second fasteners can be arranged at intervals or without intervals.

[0170] The first part 21 and the third part 23 are connected and fixed by the second fastener, which facilitates the disassembly of the first part 21 and the third part 23 of the housing 20, thereby improving the convenience of maintenance and replacement.

[0171] It should be noted that the second fastener can be a bolt or a fastener clip, etc.

[0172] For example, the second fastener is a bolt, and through holes are respectively opened on the first part 21 and the third part 23. After the bolt passes through the through hole, the nut is locked in place. In this way, the connection and fixation of the first part 21 and the third part 23 can be achieved.

[0173] In some embodiments of this application, the housing 20 further includes a first seal (not shown in the figure), which is sealed at the junction of the first part 21 and the second part 22.

[0174] Specifically, placing the first seal at the junction of the first part 21 and the second part 22 can improve the sealing performance of the junction of the first part 21 and the second part 22 and reduce the adverse effects of the external environment on the components in the first subspace 241.

[0175] It should be noted that the first sealing element can be a sealing ring or sealant, etc.

[0176] For example, the first sealing element is a first sealing ring (e.g., a rubber ring or a silicone ring). The first sealing ring is an elastic structure. The first sealing ring is sandwiched between the first part 21 and the second part 22. The sealing between the first part 21 and the second part 22 is achieved through the elastic deformation of the first sealing ring.

[0177] In some embodiments of this application, the housing 20 further includes a second seal (not shown in the figure), which is sealed at the junction of the first part 21 and the third part 23.

[0178] Specifically, placing the second seal at the joint between the first part 21 and the third part 23 can improve the sealing performance at the joint between the first part 21 and the third part 23 and reduce the adverse effects of the external environment on the components within the containment space.

[0179] It should be noted that the second seal can be a sealing ring or sealant, etc.

[0180] For example, the second seal is a second sealing ring (e.g., a rubber ring or a silicone ring). The second sealing ring is an elastic structure and is sandwiched between the first part 21 and the third part 23. The seal between the first part 21 and the third part 23 is achieved through the elastic deformation of the second sealing ring.

[0181] In some embodiments of this application, such as Figure 7 and Figure 8 As shown, the wiring harness assembly 50 includes a wiring harness body 52 and a plurality of second terminals 53. The wiring harness body 52 is fixed on the bracket 60 or spaced apart from the bracket 60. A plurality of first terminals 51 are connected to one end of the wiring harness body 52 and electrically connected to the battery management device 30. A plurality of second terminals 53 are connected to the other end of the wiring harness body 52 and electrically connected to the battery cell assembly 10.

[0182] Specifically, the two ends of the wiring harness body 52 are respectively provided with a first terminal 51 and a second terminal 53. The first terminal 51 is electrically connected to the battery management device 30, and the second terminal 53 is electrically connected to the battery cell assembly 10. During assembly, the second terminal 53 can be used to first connect and fix the battery cell assembly 10, then the bracket 60 can be fixed to the housing 20, and finally the battery management device 30 can be connected to the first terminal 51. This arrangement facilitates the connection between the battery management device 30 and the wiring harness assembly 50, thereby improving assembly convenience and production efficiency.

[0183] In some embodiments of this application, such as Figure 4 , Figure 6 and Figure 7 As shown, the battery device 100 also includes a flexible electrical connector 40, through which the battery management device 30 is electrically connected to a plurality of first terminals 51.

[0184] Specifically, the flexible electrical connector 40 is flexible, meaning it can be bent without breaking. The flexible electrical connector 40 is used to electrically connect the first terminal 51 to the battery management device 30, allowing the battery management device 30 to be effectively connected to the wiring harness while enabling flexible layout and installation.

[0185] In some embodiments of this application, the flexible electrical connector 40 is a flexible printed circuit (FPC). A flexible printed circuit is a circuit board made of a flexible substrate (such as polyimide or polyester film), which is flexible, lightweight, and space-saving, and can adapt to scenarios requiring dynamic connections or complex spatial layouts. This configuration can adapt to the layout of the battery management device 30, facilitating the connection between the battery management device 30 and the first terminal 51, thus improving the ease of connection.

[0186] In some embodiments of this application, such as Figure 7 and Figure 8 As shown, the flexible electrical connector 40 includes a main body 42, a first connecting terminal 41 and a second connecting terminal 43. The first connecting terminal 41 is located at one end of the main body 42 and is plugged into the battery management device 30. The second connecting terminal 43 is located at the other end of the main body 42 and is plugged into the first terminal 51.

[0187] Specifically, a first connecting terminal 41 and a second connecting terminal 43 are respectively provided at both ends of the wire body, and the first connecting terminal 41 and the second connecting terminal 43 are electrically connected to other components. Among them, the first connecting terminal 41 is plugged into the battery management device 30 and electrically connected, and the second connecting terminal 43 is plugged into the first terminal 51 of the wire harness assembly 50 and electrically connected.

[0188] A first connecting terminal 41 and a second connecting terminal 43 are provided, and the first connecting terminal 41 and the second connecting terminal 43 are connected to other components by plugging in. The plugging in method improves the convenience of the assembly process and improves the assembly efficiency.

[0189] In some embodiments of this application, such as Figure 7 and Figure 8 As shown, the first terminal 51 is a female connector, and the second connection terminal 43 is a male connector.

[0190] Specifically, the first terminal 51 is configured as a female connector and connected to the bracket 60, thereby increasing the contact area between the first terminal 51 and the bracket 60 and increasing the strength of the connection between the wire harness assembly 50 and the bracket 60.

[0191] In some embodiments of this application, the second terminal 53 is a female connector.

[0192] Specifically, the second terminal 53 is configured as a female connector, and the connection end between the battery cell assembly 10 and the second terminal 53 is configured as a male connector. When the second terminal 53 is connected, it is sleeved on the male connector, which enables the wire harness to be inserted and mated with the battery cell assembly 10, thus improving the ease of assembly.

[0193] In some embodiments of this application, the first connection terminal 41 is a male connector.

[0194] Specifically, the first terminal 51 of the wiring harness assembly 50 is plugged into the second connection terminal 43 of the flexible electrical connector 40. The first terminal 51 is connected to the bracket 60 and is a female connector, while the second connection terminal 43 is set as a male connector. This arrangement enables the flexible electrical connector 40 to be plugged into the battery management device 30, improving the ease of assembly.

[0195] In some embodiments of this application, such as Figure 7 and Figure 8 As shown, multiple first terminals 51 are connected to the bracket 60 by adhesive bonding.

[0196] Specifically, the connection between the first terminal 51 and the bracket 60 is set to adhesive bonding. This setting is simple in structure, easy to implement, and improves the efficiency of fixing the first terminal 51 and the bracket 60.

[0197] In some embodiments of this application, the support 60 is an epoxy resin board.

[0198] Specifically, the bracket 60 is an epoxy resin board, and the first terminal 51 is a female connector. When fixing the first terminal 51, the first terminal 51 is attached to the surface of the epoxy resin board and fixed to the epoxy resin board by adhesive. Setting the bracket 60 as an epoxy resin board increases the contact area between the first terminal 51 and the bracket 60, thereby improving the fixing strength of the first terminal 51.

[0199] In some embodiments of this application, the epoxy resin board is an integral structure, and a plurality of first terminals 51 are disposed on the same side of the epoxy resin board or dispersedly disposed on opposite sides of the epoxy resin board.

[0200] This configuration allows for the simultaneous fixing of multiple first terminals 51 by fixing the epoxy resin board, effectively improving assembly efficiency.

[0201] In some embodiments of this application, the epoxy resin board includes multiple board bodies, and multiple first terminals 51 are distributed on the multiple board bodies. This arrangement facilitates adaptation to the installation location and improves the ease of installation.

[0202] It should be noted that the number of boards can be two, three, four, five, six, etc.

[0203] In some embodiments of this application, such as Figure 8 As shown, the bracket 60 is provided with a connection hole 61, and the battery device 100 also includes a fastening component 70. The connecting end of the fastening component 70 passes through the connection hole 61 and is connected to the housing 20 to fix the bracket 60 on the housing 20.

[0204] Specifically, the fastening component 70 is used to connect the bracket 60 to the housing 20, which improves the connection strength between the bracket 60 and the housing 20 and enhances the stability of the wire harness assembly 50.

[0205] It should be noted that the fastening component 70 can be a screw, which has high connection strength and good stability.

[0206] In addition, the bracket 60 can be a plate-shaped component, which can increase the contact area between the bracket and the housing 20, thereby improving the fixing strength and stability of the bracket 60.

[0207] like Figures 1 to 8 As shown, a second aspect of this application provides an electrical device comprising a battery device 100 as described above.

[0208] During assembly, the battery device 100 is connected to the housing 20 via the bracket 60, thereby connecting and fixing the wiring harness assembly 50 to the housing 20. Multiple first terminals 51 in the wiring harness assembly 50 are respectively fixed on the bracket 60, reducing the need to fix the first terminals 51 one by one, improving the convenience of the assembly process, and increasing the efficiency of the assembly.

[0209] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0210] In the embodiments of this application, such as Figures 3 to 8As shown, this application proposes a battery device 100, which includes a housing 20, a battery cell assembly 10, a battery management device 30, a wiring harness assembly 50, and a bracket 60. The housing 20 has a receiving space 24, in which the battery cell assembly 10 and the battery management device 30 are respectively disposed. The battery cell assembly 10 is electrically connected to the battery management device 30 through the wiring harness assembly 50. The bracket 60 is fixed on the housing 20, and the wiring harness assembly 50 includes a plurality of first terminals 51, which are fixed on the bracket 60 and electrically connected to the battery cell assembly 10 or the battery management device 30.

[0211] During assembly, the bracket 60 is connected to the housing 20, thereby connecting and fixing the wire harness assembly 50 to the housing 20. Multiple first terminals 51 in the wire harness assembly 50 are respectively fixed on the bracket 60, reducing the process of fixing the first terminals 51 one by one, improving the convenience of the assembly process, and thus improving the assembly efficiency.

[0212] Furthermore, the accommodating space 24 includes a first subspace 241 and a second subspace 242. The housing 20 includes a first part 21, a second part 22, and a third part 23. The first part 21 includes a connecting opening 211. The second part 22 is fastened to the first part 21 to enclose the first subspace 241. The third part 23 is fastened to the side of the first part 21 opposite to the second part 22, and the third part 23 and the first part 21 enclose the second subspace 242. The first subspace 241 is connected to the second subspace 242 through the connecting opening 211. A bracket 60 is installed inside the first subspace 241 and fixedly connected to either the first part 21 or the second part 22. The battery management device 30 is installed inside the second subspace 242.

[0213] In some example configurations, along the first direction X, the first portion 21 is positioned on top of the second portion 22. The battery cell assembly 10 includes at least one battery cell, the battery cell including a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism being disposed towards the first portion 21 along the first direction X, the bracket 60 being connected to the second portion 22, and the arrangement direction of the first portion 21 and the second portion 22 being consistent with the first direction X.

[0214] In some example configurations, along a first direction X, a first portion 21 is positioned on top of a second portion 22. The battery cell assembly 10 includes at least one battery cell, each battery cell including a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism being positioned toward the second portion 22, and a bracket 60 connected to the first portion 21.

[0215] Furthermore, the enclosure 20 also includes first fasteners, with the first part 21 and the second part 22 detachably connected by a plurality of first fasteners. The enclosure 20 also includes second fasteners, with the first part 21 and the third part 23 detachably connected by a plurality of second fasteners. This arrangement facilitates disassembly between the first part 21 and the third part 23 of the enclosure 20, thereby improving the convenience of maintenance and replacement. The enclosure 20 also includes a first seal, which seals the joint between the first part 21 and the second part 22. The enclosure 20 also includes a second seal, which seals the joint between the first part 21 and the third part 23.

[0216] Furthermore, the wiring harness assembly 50 also includes a wiring harness body 52 and a plurality of second terminals 53. The wiring harness body 52 is fixed on or spaced apart from the bracket 60. The plurality of first terminals 51 are connected to one end of the wiring harness body 52 and electrically connected to the battery management device 30. The plurality of second terminals 53 are connected to the other end of the wiring harness body 52 and electrically connected to the battery cell assembly 10.

[0217] Furthermore, the battery device 100 also includes a flexible electrical connector 40, through which the battery management device 30 is electrically connected to a plurality of first terminals 51. The flexible electrical connector 40 includes a main body 42, a first connecting terminal 41, and a second connecting terminal 43. The first connecting terminal 41 is located at one end of the main body 42 and is inserted into the battery management device 30, while the second connecting terminal 43 is located at the other end of the main body 42 and is inserted into the first terminal 51. The flexible electrical connector 40 is a flexible circuit board.

[0218] Furthermore, the first terminal 51 is a female connector, and the second connecting terminal 43 is a male connector.

[0219] In some embodiments of this application, a plurality of first terminals 51 are connected to the bracket 60 by adhesive bonding. The bracket 60 is an epoxy resin board.

[0220] In some example solutions, the epoxy resin board is a one-piece structure, and multiple first terminals 51 are disposed on the same side of the epoxy resin board or dispersedly disposed on opposite sides of the epoxy resin board.

[0221] In some example designs, the epoxy resin board comprises multiple board bodies, with multiple first terminals 51 distributed across these board bodies. This arrangement facilitates adaptation to the installation location and improves installation convenience.

[0222] Furthermore, the bracket 60 is provided with a connection hole 61, and the battery device 100 also includes a fastening component 70. The connecting end of the fastening component 70 passes through the connection hole 61 and is connected to the housing 20 to fix the bracket 60 on the housing 20.

[0223] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, The battery device includes: The box has a receiving space; A battery cell assembly and a battery management device are respectively disposed within the accommodating space; A wiring harness assembly, wherein the battery cell assembly is electrically connected to the battery management device via the wiring harness assembly; The bracket is fixed to the housing, and the wiring harness assembly includes a plurality of first terminals, which are fixed to the bracket and electrically connected to the battery cell assembly or the battery management device.

2. The battery device as claimed in claim 1, characterized in that, The accommodating space includes a first subspace and a second subspace. The box body includes a first part, a second part and a third part. The first part includes a communication opening. The second part is fastened to the first part to enclose the first subspace. The third part is fastened to the side of the first part away from the second part. The third part and the first part enclose the second subspace. The first subspace is connected to the second subspace through the communication opening. The bracket is installed in the first subspace and fixedly connected to the first part or the second part, and the battery management device is installed in the second subspace.

3. The battery device as claimed in claim 2, characterized in that, Along the first direction, the first portion is located on top of the second portion; The battery cell assembly includes at least one battery cell, the battery cell includes a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism is disposed toward the first part along the first direction, the bracket is connected to the second part, and the arrangement direction of the first part and the second part is consistent with the first direction.

4. The battery device as claimed in claim 2, characterized in that, Along the first direction, the first portion is located on top of the second portion; The battery cell assembly includes at least one battery cell, the battery cell includes a first surface and a pressure relief mechanism disposed on the first surface, the pressure relief mechanism is disposed toward the second portion, and the bracket is connected to the first portion.

5. The battery device as claimed in claim 2, characterized in that, The housing also includes a first fastener, and the first part and the second part are detachably connected by a plurality of the first fasteners; And / or, the housing further includes a second fastener, wherein the first portion and the third portion are detachably connected by a plurality of the second fasteners; And / or, the housing further includes a first seal, which is sealed at the junction of the first part and the second part; And / or, the housing further includes a second seal, which is disposed at the junction of the first part and the third part.

6. The battery device as claimed in claim 1, characterized in that, The wire harness assembly includes: A wiring harness body, the wiring harness body being fixed on the bracket or spaced apart from the bracket, and the plurality of first terminals being connected to one end of the wiring harness body and electrically connected to the battery management device; A plurality of second terminals are connected to the other end of the wiring harness body and electrically connected to the battery cell assembly.

7. The battery device as claimed in claim 6, characterized in that, The battery device further includes a flexible electrical connector, through which the battery management device is electrically connected to the plurality of first terminals.

8. The battery device as claimed in claim 7, characterized in that, The flexible electrical connection includes: main body; A first connection terminal is located at one end of the main body and is plugged into the battery management device. The second connection terminal is located at the other end of the main body and is plugged into the first terminal.

9. The battery device as claimed in claim 8, characterized in that, The first terminal is a female connector, and the second connection terminal is a male connector; And / or, the second terminal is a female connector; And / or, the first connection terminal is a male connector; And / or, the flexible electrical connector is a flexible circuit board.

10. The battery device as claimed in claim 1, characterized in that, The battery management device is plugged into and engaged with the plurality of first terminals.

11. The battery device as claimed in claim 1, characterized in that, The plurality of first terminals are connected to the bracket by adhesive bonding.

12. The battery device as claimed in claim 1, characterized in that, The support is made of epoxy resin board.

13. The battery device as claimed in claim 12, characterized in that, The epoxy resin board is an integral structure, and the plurality of first terminals are disposed on the same side of the epoxy resin board or dispersedly disposed on opposite sides of the epoxy resin board. Alternatively, the epoxy resin board may comprise a plurality of boards, with the plurality of first terminals dispersedly disposed on the plurality of boards.

14. The battery device according to any one of claims 1 to 13, characterized in that, The bracket is provided with a connection hole, and the battery device also includes a fastening component. The connecting end of the fastening component passes through the connection hole and is connected to the housing to fix the bracket to the housing.

15. An electrical appliance, characterized in that, The electrical equipment includes a battery device according to any one of claims 1 to 14.

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