Battery device, power utilization device and assembly method of battery device

Abstract

The embodiment of the invention provides a battery device, a power utilization device and an assembly method of the battery device. The battery device comprises a battery monomer group, an end plate, a circuit board, a connector, a battery management module and a first bracket, the end plate is arranged at one end of the battery monomer group, and the connector is electrically connected with the circuit board; the first support comprises a first part and a second part, the first part is connected with the end plate, and the second part is connected with the connector; the first part and the second part have a connection state and a separation state, in the connection state, the connector is fixed to the end plate through the first support, and the connector is separated from the battery management module; in the separated state, the connector is electrically connected with the battery management module. According to the technical scheme provided by the invention, the connector can be firmly fixed with the end plate in the transfer process of the connector, so that the transportation stability of the connector is improved, and the risk that the connector is damaged in the transportation process is reduced; moreover, the connector can be separated from the end plate when being assembled with the battery management module, so that the assembly of the connector is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and more particularly, to a battery device, an electrical device, and an assembly method for the battery device. Background Art

[0002] In recent years, new energy vehicles have witnessed a leapfrog development. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the strong promotion of new energy vehicles, the demand for power battery products is also increasing day by day. Among them, battery devices, as the core components of new energy vehicles, have relatively high requirements in terms of use stability and reliability.

[0003] During the assembly process of the battery device, after assembling and connecting the battery cell group, the circuit board, and the connector, it is necessary to transfer the battery cell group together with the connector over a certain distance to assemble and connect with the battery management module. During the transfer process of the connector, since the connector is not yet connected to the battery management module, the connector has a certain degree of freedom relative to the battery cell group. Conventionally, the connector is generally fixed by sticking it with electrical tape to reduce the risk of damage to the connector due to vibration during transportation. When the connector is transported to the target position for assembly with the battery management module, the electrical tape is then torn off. Since the electrical tape may stick to the circuit board while sticking to the connector, there is a risk of damaging the circuit board during the tape tearing process. Summary of the Invention

[0004] This application provides a battery device, an electrical device, and an assembly method for the battery device, which can firmly fix the connector to the end plate during the transfer process of the connector, improve the transportation stability of the connector, and reduce the risk of damage to the connector during transportation; moreover, when the connector is assembled with the battery management module, it can be separated from the end plate, which is conducive to the assembly of the connector.

[0005] This application is implemented through the following technical solutions: In a first aspect, an embodiment of this application provides a battery device, which includes a battery cell group, an end plate, a circuit board, a connector, a battery management module, and a first bracket. The end plate is disposed at one end of the battery cell group along a first direction; at least a part of the circuit board is disposed on one side of the battery cell group along a second direction, and the second direction is perpendicular to the first direction; the connector is disposed on the side of the end plate facing away from the battery cell group, and the connector is electrically connected to the circuit board; the first bracket includes a first part and a second part, the first part is connected to the end plate, and the second part is connected to the connector; the first part and the second part have a connected state and a separated state. In the connected state, the connector is fixed to the end plate through the first bracket, and the connector is separated from the battery management module; in the separated state, the connector is electrically connected to the battery management module.

[0006] In the technical solution of the embodiment of the present application, through the setting of the first bracket, the first part in the first bracket is connected to the end plate, and the second part is connected to the connector. When assembling the connector, the first part and the second part are in a connected state, so that the connector is fixed on the end plate through the first bracket, and the connector is firmly fixed, and the connector will not shake or vibrate during transportation. When transferring the battery cell group and the connector to the target position and assembling and connecting them to the battery management module, the first part and the second part are changed from the connected state to the separated state, so that the connector is separated from the end plate, and the connector resumes its freedom of movement. The connector can move relative to the end plate to adjust the position of the connector, which is convenient for quickly assembling and connecting the connector to the battery management module. It abandons the conventional method of using electrical tape to fix the connector on the end plate or the battery cell group, and when transferring the connector and the battery cell group to assemble with the battery management module, there is no need to perform the cumbersome operation of tearing the electrical tape, avoiding the risk of damaging the circuit board during the tape tearing process.

[0007] According to some embodiments of the present application, the first bracket further includes a weak part, and the first part is connected to the second part through the weak part. The weak part is configured to be able to break under an external force so that the first bracket is changed from the connected state to the separated state.

[0008] In the above solution, through the setting of the weak part between the first part and the second part, the weak part connects the first part and the second part. The weak part can not only effectively connect and fix the first part and the second part, but also when the first part and the second part need to be separated, the staff can more easily break or cut the weak part between the first part and the second part, so as to quickly separate the first part and the second part, with convenient and fast operation and less workload for the staff.

[0009] According to some embodiments of the present application, the number of the weak parts is multiple, and the multiple weak parts are arranged at intervals.

[0010] In the above solution, through the setting of the multiple weak parts, the multiple weak parts can increase the number of connection points between the first part and the second part, improve the connection stability between the first part and the second part, and ensure the transportation stability of the connector during transportation.

[0011] According to some embodiments of the present application, the first part and the second part are detachably connected.

[0012] In the above solution, the first part and the second part are detachably connected, enabling the first part and the second part to be connected and separated multiple times. In the state where the connector is not connected to the battery management module, the first part and the second part are connected to fix the connector to the end plate, thereby improving the position stability of the connector; when the connector needs to be connected to the battery management module, the first part and the second part are separated to facilitate the connection between the connector and the battery management module; in the state where the connector is connected to the battery management module, the first part and the second part can be reconnected to fix the connector to the end plate again, thereby improving the position stability of the connector and reducing the risk of disconnection between the connector and the battery management module.

[0013] According to some embodiments of the present application, the first part and the second part are snap-connected.

[0014] In the above solution, by snap-connecting the first part and the second part, it is easy to disassemble between the first part and the second part. When assembling and connecting the connector to the battery management module, only need to forcefully separate the buckle between the first part and the second part, which is convenient to operate and does not require other tools, reducing the workload of the staff.

[0015] According to some embodiments of the present application, the first bracket is an integrally formed structure.

[0016] In the above solution, by adopting the first bracket as an integrally formed structure, the integrity of the first bracket is better and the structural strength is higher. When the connector is transported, it can fix the connector more firmly. And the first bracket can be produced at one time, making the manufacturing more convenient.

[0017] According to some embodiments of the present application, the first part includes a first body and a fixing member. The first body is connected to the second part, and the fixing member is arranged on the first body and connected to the end plate.

[0018] In the above solution, the first body provides a bearing and installation function for the fixing member, enabling the fixing member to be stably installed on the first body. The first part is connected to the end plate through the fixing member to realize the connection and fixation between the connector and the end plate.

[0019] According to some embodiments of the present application, the fixing member is a rivet.

[0020] In the above solution, by adopting the fixing member as a rivet, the structure is simple. The first part is riveted to the end plate through the rivet. In this way, during the transportation process of the connector, the connector can be stably fixed on the end plate, restricting the displacement of the connector, improving the transportation stability of the connector, and effectively protecting the connector.

[0021] According to some embodiments of the present application, the first part further includes a restraint portion, the restraint portion is connected to the first body, and the restraint portion has a through hole; the battery device further includes a connecting member, and the connecting member passes through the through hole.

[0022] In the above solution, through the arrangement of the restraint portion, the restraint portion can be penetrated by the connecting member in the battery device, which plays a role in bundling and limiting the connecting member, improving the overall aesthetics and use convenience of the connecting member. The restraint portion can also fix the connecting member on one side of the end plate to prevent it from loosening or being damaged due to movement or vibration.

[0023] According to some embodiments of the present application, one end of the circuit board is clamped between the connector and the second part.

[0024] In the above solution, by clamping and fixing one end of the circuit board through the second part and the connector, the second part can play a strengthening role in the connection between the circuit board and the connector, enabling the circuit board to be more firmly connected and fixed to the connector, making the connection integrity between the connector and the circuit board better, and it is not easy for the connector to become loose from the circuit board.

[0025] According to some embodiments of the present application, a first rivet post is provided on one side of the connector facing the second part, and the second part is provided with a positioning hole for the first rivet post to pass through, and the first rivet post is thermally riveted and fixed on the second part.

[0026] In the above solution, by providing a first rivet post on one side of the connector, the connector is riveted to the second part through the first rivet post, so that the connector and the second part are connected as a whole, and one end of the circuit board is located between the connector and the second part, thereby clamping and fixing the circuit board, making the connection stability between the circuit board and the connector higher.

[0027] According to some embodiments of the present application, the second part is provided with a first window, and the first window is used to expose a part of the circuit board, and the first window is filled with a colloid.

[0028] In the above solution, by providing a first window on the second part, the first window can expose a part of the circuit board. By filling the first window with a colloid, on the one hand, the colloid can cover the area of the circuit board exposed relative to the second part, playing a role in shielding and a certain degree of protection for the circuit board. On the other hand, the colloid can fill the gaps between the circuit board, the second part and the connector, further bonding the circuit board, the second part and the connector firmly, and improving the connection stability between the circuit board and the connector.

[0029] According to some embodiments of the present application, the first bracket is an insulating member.

[0030] In the above solution, using the first bracket as an insulating member can reduce the risk of short circuit between the first bracket and the circuit board, and the battery device has higher safety.

[0031] In a second aspect, an embodiment of the present application further provides an electrical device, which includes the battery device of any of the foregoing embodiments.

[0032] In a third aspect, an embodiment of the present application further provides an assembly method for a battery device, which is applied to the battery device of any of the foregoing embodiments. The manufacturing method includes: fixing a connector to an end plate through a first bracket; separating a first part and a second part; and connecting the connector to a battery management module.

[0033] In the above solution, when assembling the connector, with the first part and the second part in a connected state, the connector can be fixed to the end plate through the first bracket, and the connector is firmly fixed, and there will be no shaking or jitter of the connector during transportation. When the connector is transferred to a target position and assembled and connected to the battery management module, the first part and the second part are separated, so that the connector is separated from the end plate, and the connector regains its freedom of movement. The connector can move relative to the end plate to adjust the position of the connector, facilitating the quick assembly and connection of the connector to the battery management module.

[0034] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 Structural schematic diagram of a vehicle provided by some embodiments of the present application; Figure 2 Exploded structural schematic diagram of a battery device provided by some embodiments of the present application; Figure 3 Structural schematic diagram of a connector in a battery device provided by some embodiments of the present application before being assembled with a battery management module; Figure 4 Partial schematic diagram of a battery device provided by some embodiments of the present application after the connector is assembled with the battery management module; Figure 5 Partial schematic diagram of a battery device provided by some embodiments of the present application before the connector is assembled with the battery management module; Figure 6 Structural schematic diagram of a first bracket in a battery device provided by some embodiments of the present application; Figure 7 Schematic structural diagram of the first bracket of the battery device provided in some embodiments of the present application from another angle; Figure 8 Schematic structural diagram of the wire tie of the first bracket of the battery device provided in some embodiments of the present application; Figure 9 Partial schematic diagram of another angle of the battery device provided in some embodiments of the present application before the connector and the battery management module are assembled; Figure 10 Schematic structural diagram of the end plate of the battery device provided in some embodiments of the present application.

[0037] Icons: 1000 - vehicle; 100 - battery device; 200 - controller; 300 - motor; 10 - box body; 11 - first sub - box body; 12 - second sub - box body; 20 - battery cell; 24 - battery cell group; 30 - end plate; 31 - connection hole; 40 - circuit board; 50 - connector; 60 - first bracket; 61 - first part; 611 - first body; 612 - fixing member; 613 - restraining part; 6131 - tie head; 61311 - locking hole; 6132 - wire tie; 6133 - convex tooth; 614 - first through - hole; 62 - second part; 621 - first window; 622 - positioning hole; 63 - weak part; 70 - battery management module; 80 - connecting member; X - first direction; Y - second direction. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above - mentioned drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above - mentioned drawings are used to distinguish different objects and are not used to describe a specific order or primary - secondary relationship.

[0040] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0041] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The term "and / or" in this application is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0043] The term "a plurality of" as used in this application refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of sheets" refers to two or more sheets (including two sheets).

[0044] The battery device (BatteryApparatus) mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (BatteryCellAssembly) may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0045] In some embodiments, the battery cell assembly (BatteryCellAssembly) is usually formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module (BatteryModule), and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with cable ties.

[0046] In some embodiments, the battery device can be a battery pack (BatteryPack), and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0047] As an example, the battery cell group can be a battery module, and the battery cell group can be accommodated in the box by fixing the battery module in the box.

[0048] As an example, the battery cell group can also be accommodated in the box by directly fixing a plurality of battery cells to the box.

[0049] In some embodiments, the box can be part of the chassis structure of a vehicle. For example, part of the box can become at least part of the vehicle floor, or part of the box can become at least part of the cross beams and longitudinal beams of the vehicle.

[0050] 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.

[0051] In the embodiments of the present application, the battery cell can be a secondary battery, and the secondary battery refers to a type of battery that can activate the active material through charging after the battery cell discharges and can continue to be used.

[0052] The battery cell can be, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc.

[0053] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0054] In some embodiments, the positive electrode can be a positive electrode sheet, and the positive electrode sheet can include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0055] As an example, the positive electrode current collector has two surfaces opposite to each other in its own thickness direction, and the positive electrode active material is disposed on any one or both of the two opposite surfaces of the positive electrode current collector.

[0056] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as the metal foil, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium with a silver-plated surface can be used. The composite current collector can include a polymer material substrate layer and a metal layer. The composite current collector can be formed by forming a metal material (such as aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0057] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphate, lithium transition metal oxide, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as the positive electrode active material of the battery cell can also be used.

[0058] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0059] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium, etc. may be used.

[0060] In some embodiments, the negative electrode current collector has two surfaces opposite to each other in its own thickness direction, and the negative electrode active material is disposed on any one or both of the two opposite surfaces of the negative electrode current collector.

[0061] As an example, the negative electrode active material may be a negative electrode active material for a battery cell well-known in the art. 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 material, tin-based material, and lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compound, silicon-carbon composite, silicon-nitrogen composite, and silicon alloy. The tin-based material may be selected from at least one of elemental tin, tin oxide compound, and tin alloy. However, the present application is not limited to these materials, and other conventional materials that can be used as the negative electrode active material of the battery cell can also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0062] In some embodiments, the separator is an isolation film. The present application has no particular limitation on the type of the isolation film, and any well-known porous structure isolation film with good chemical stability and mechanical stability can be selected.

[0063] As an example, the main material of the isolation film may be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The isolation film may be a single-layer film or a multi-layer composite film, without particular limitation. When the isolation film is a multi-layer composite film, the materials of each layer may be the same or different, without particular limitation. The separator may be a separate component located between the positive and negative electrodes, or may be attached to the surfaces of the positive and negative electrodes.

[0064] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode, and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0065] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0066] In some embodiments, the electrode assembly has a laminated structure.

[0067] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0068] In some embodiments, the housing includes an end cap and a housing body. The housing body is provided with an opening, and the end cap closes the opening to form a sealed space for accommodating substances such as the electrode assembly and the electrolyte. The housing body can be provided with one or more openings. One or more end caps can also be provided.

[0069] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab of the electrode assembly. The electrode terminal can be directly connected to the tab or indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing body.

[0070] In some embodiments, a pressure relief valve is provided on the housing. The pressure relief valve is used to release the internal pressure of the battery cell.

[0071] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc. There is no particular limitation in the embodiments of the present application.

[0072] During the assembly process of the battery device, after the battery cell group, the circuit board, and the connector are assembled and connected, since the connection ground of the battery management module and the connector may be different from the current assembly ground, there is a need to transfer the battery cell group, the circuit board, and the connector to complete the assembly connection with the battery management module. During the transfer of the connector, since the connector is not yet connected to the battery management module, the connector has a certain degree of freedom relative to the battery cell group. Generally, electrical tape is used to bond and fix the connector to reduce the risk of damage to the connector due to vibration during transportation. When the connector is transported to the target position for assembly with the battery management module, the electrical tape is then torn off. Since the electrical tape may bond the circuit board while bonding the connector, there is a risk of damaging the circuit board during the tape tearing process.

[0073] In view of this, some embodiments of the present application provide a battery device, which includes a battery cell group, an end plate, a circuit board, a connector, a battery management module, and a first bracket. The end plate is disposed at one end of the battery cell group along a first direction; at least a part of the circuit board is disposed on one side of the battery cell group along a second direction, and the second direction is perpendicular to the first direction; the connector is disposed on a side of the end plate facing away from the battery cell group, and the connector is electrically connected to the circuit board; the first bracket includes a first part and a second part, the first part is connected to the end plate, and the second part is connected to the connector; the first part and the second part have a connected state and a separated state. In the connected state, the connector is fixed to the end plate through the first bracket, and the connector is separated from the battery management module; in the separated state, the connector is electrically connected to the battery management module.

[0074] In the battery device provided by the embodiments of the present application, the first part of the first bracket is connected to the end plate, and the second part is connected to the connector. When assembling the connector, the first part and the second part are in the connected state, so that the connector is fixed to the end plate through the first bracket, and the connector is firmly fixed, and the connector will not shake or vibrate during transportation. When transferring the battery cell group and the connector to a target position and assembling and connecting them to the battery management module, the first part and the second part are changed from the connected state to the separated state, so that the connector is separated from the end plate, the connector resumes its freedom, and the connector can move relative to the end plate to adjust the position of the connector, facilitating the quick assembly and connection of the connector to the battery management module.

[0075] The battery device disclosed in the embodiments of the present application can be but is not limited to being used in electrical equipment such as vehicles, ships, or aircraft. The power supply system of the electrical equipment can be composed of the battery device disclosed in the present application.

[0076] The technical solutions described in the embodiments of the present application are applicable to various electrical equipment using battery cells and battery devices, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, electric tools, vehicles, ships, and spacecrafts. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc.

[0077] For the convenience of description, the following embodiments take a vehicle as an example of an electrical equipment in an embodiment of the present application for illustration.

[0078] Please refer to Figure 1 , Figure 1Schematic structural diagram of vehicle 1000 provided by some embodiments of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery device 100 is disposed inside vehicle 1000. The battery device 100 can be disposed at the bottom, the head, or the tail of vehicle 1000. The battery device 100 can be used for power supply of vehicle 1000. For example, the battery device 100 can serve as the operating power source of vehicle 1000 and be used for the circuit system of vehicle 1000, such as for the working power requirements during the start-up, navigation, and operation of vehicle 1000.

[0079] Vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start-up, navigation, and driving of vehicle 1000.

[0080] In some embodiments of the present application, the battery device 100 can not only serve as the operating power source of vehicle 1000, but also serve as the driving power source of vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1000.

[0081] Please refer to Figure 2 , Figure 2 Schematic exploded view of the structure of the battery device 100 provided by some embodiments of the present application. The battery device 100 includes a box body 10 and battery cells 20. The battery cells 20 are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation space for the battery cells 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a first sub-box body 11 and a second sub-box body 12. The first sub-box body 11 and the second sub-box body 12 are covered with each other, and the first sub-box body 11 and the second sub-box body 12 jointly define an accommodation space for accommodating the battery cells 20. The second sub-box body 12 can be a hollow structure with one end open. The first sub-box body 11 can be a plate-like structure. The first sub-box body 11 covers the open side of the second sub-box body 12 so that the first sub-box body 11 and the second sub-box body 12 jointly define an accommodation space; the first sub-box body 11 and the second sub-box body 12 can also both be hollow structures with one side open, and the open side of the first sub-box body 11 covers the open side of the second sub-box body 12.

[0082] In the battery device 100, there may be multiple battery cells 20. The multiple battery cells 20 can be connected in series, parallel, or in a combined series-parallel connection. A combined series-parallel connection means that among the multiple battery cells 20, there are both series and parallel connections. The multiple battery cells 20 can be directly connected in series, parallel, or in a combined series-parallel connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10. Of course, in the battery device 100, multiple battery cells 20 can also be first connected in series, parallel, or in a combined series-parallel connection to form a battery module, and then multiple battery modules are connected in series, parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box 10.

[0083] The battery device 100 may further include other structures. For example, the battery device 100 may further include a bus bar for realizing the electrical connection between the multiple battery cells 20.

[0084] An embodiment of the present application provides a battery device. Please refer to Figures 3 to 6 , the battery device 100 includes a battery cell group 24, an end plate 30, a circuit board 40, a connector 50, a battery management module 70, and a first bracket 60. The end plate 30 is disposed at one end of the battery cell group 24 along the first direction X. The circuit board 40 is at least partially disposed on one side of the battery cell group 24 along the second direction Y, and the second direction Y is perpendicular to the first direction X. The connector 50 is disposed on the side of the end plate 30 facing away from the battery cell group 24, and the connector 50 is electrically connected to the circuit board 40. The first bracket 60 includes a first part 61 and a second part 62. The first part 61 is connected to the end plate 30, and the second part 62 is connected to the connector 50. The first part 61 and the second part 62 have a connected state and a separated state. In the connected state, the connector 50 is fixed to the end plate 30 through the first bracket 60, and the connector 50 is separated from the battery management module 70. In the separated state, the connector 50 is electrically connected to the battery management module 70. The first part 61 and the second part 62 form the first bracket 60. The first part 61 and the second part 62 can be integrally formed, or the first part 61 and the second part 62 can be detachably connected, that is, the first part 61 and the second part 62 can be connected and separated multiple times. The first part 61 and the second part 62 having a connected state and a separated state means that the first part 61 and the second part 62 have two states. Before the connector 50 is assembled with the battery management module 70, that is, when the connector 50 is connected to the circuit board 40 but not assembled and connected to the battery management module 70, the first part 61 and the second part 62 of the first bracket 60 are in the connected state, and the first bracket 60 is a whole. The connector 50 can be fixed to the end plate 30 through the first bracket 60. When the connector 50 and the battery cell group 24 are transported together, the displacement of the connector 50 relative to the end plate 30 can be effectively restricted.

[0085] When transporting the connector 50 to be assembled and connected to the battery management module 70, the first part 61 and the second part 62 are separated, so that the connector 50 is separated from the end plate 30, which facilitates adjusting the position of the connector 50 to assemble and connect the connector 50 to the battery management module 70. After assembly, the battery management module 70 is connected to the end plate 30.

[0086] The connector 50 is mainly used to connect to the circuit board 40 on the battery cell group 24 in the battery device 100 to ensure stable transmission of current and signals. The connector 50 is electrically connected to the circuit board 40 to transmit the signals of the battery cell group 24 to the battery management module 70.

[0087] The battery management module 70 can be understood as a module for collecting information, controlling, providing safety protection, and external communication for the battery cell group 24. The battery management module 70 may include at least one of a cell monitor controller and a battery management unit.

[0088] The end plate 30 refers to the end plate 30 structure provided on one side of the battery cell group 24 along the first direction X. The first direction X may be perpendicular to the outer surface with the largest area of the battery cells in the battery cell group 24. The second direction Y may be the thickness direction of the battery cell group 24. Specifically, the end plate 30 may be a plate-like structure for fixing the battery cells 20 in a battery module, or the end plate 30 may also be a side wall of the box body 10 or a beam structure inside the box body 10. For example, the end plate 30 is provided inside the box body 10, and the end plate 30 divides the internal space of the box body 10 into a battery compartment and an electrical compartment. The battery cell group 24 is disposed in the battery compartment, and the battery management module 70 is disposed in the electrical compartment. At this time, the end plate 30 serves as a beam structure inside the box body 10. On the one hand, it can improve the structural strength of the box body 10, and on the other hand, it can resist the expansion of the battery cells 20 to extend the service life of the battery cells 20.

[0089] At least a part of the circuit board 40 is disposed on one side of the battery cell group 24 along the second direction Y, which means that a part of the circuit board 40 is disposed on one side of the battery cell group 24 along the second direction Y, and a part of the circuit board 40 is disposed on one side of the battery cell group 24 along the first direction X, so that the circuit board 40 is electrically connected to the connector 50. Of course, it is also possible that the entire circuit board 40 is located on one side of the battery cell group 24 along the second direction Y.

[0090] In the technical solution of the embodiment of the present application, through the setting of the first bracket 60, the first part 61 in the first bracket 60 is connected to the end plate 30, and the second part 62 is connected to the connector 50. When assembling the connector 50, the first part 61 and the second part 62 are in a connected state. In this way, the connector 50 is fixed to the end plate 30 through the first bracket 60, and the connector 50 is firmly fixed, and the connector 50 will not shake or vibrate during transportation. When transferring the battery cell group 24 and the connector 50 to the target position and assembling and connecting them to the battery management module 70, the first part 61 and the second part 62 are changed from the connected state to the separated state. In this way, the connector 50 is separated from the end plate 30, and the connector 50 resumes its freedom of movement. The connector 50 can move relative to the end plate 30 to adjust the position of the connector 50, which is convenient for quickly assembling and connecting the connector 50 to the battery management module 70. This abandons the conventional method of fixing the connector 50 to the end plate 30 or the battery cell group 24 with electrical tape. Moreover, when transferring the connector 50 and the battery cell group 24 to be assembled with the battery management module 70, there is no need to perform the operation of tearing the electrical tape, avoiding the risk of damaging the circuit board 40 during the tape tearing process.

[0091] According to some embodiments of the present application, please refer to Figure 6 and Figure 7 , the first bracket 60 further includes a weak part 63. The first part 61 is connected to the second part 62 through the weak part 63. The weak part 63 is configured to be able to break under the action of an external force, so that the first bracket 60 is changed from the connected state to the separated state.

[0092] The weak part 63 refers to the connection structure connected between the first part 61 and the second part 62. The weak part 63 is a region with relatively weak structural strength or stability in the first bracket 60. When the first bracket 60 is subjected to a certain external force, the weak part 63 is a vulnerable area, and the weak part 63 will break first. The strength of the weak part 63 is less than the strength of the first part 61, and the strength of the weak part 63 is also less than the strength of the second part 62. That is, the weak part 63 is the weak area in the first bracket 60. For example, the thickness of the weak part 63 can be less than the thickness of the first part 61 and the second part 62, or the material of the weak part 63 can be different from the materials of the first part 61 and the second part 62, that is, the strength of the weak part 63 is less than the strengths of the first part 61 and the second part 62. It can also be that the thickness of the weak part 63 is less than the thickness of the first part 61 and the second part 62, and the strength of the weak part 63 is less than the strengths of the first part 61 and the second part 62.

[0093] By providing a weak part 63 between the first part 61 and the second part 62, the weak part 63 connects the first part 61 and the second part 62. The weak part 63 can not only effectively connect and fix the first part 61 and the second part 62, but also enable the staff to break or cut the weak part 63 between the first part 61 and the second part 62 more easily when the first part 61 and the second part 62 need to be separated, so as to quickly separate the first part 61 and the second part 62. The operation is convenient and fast, and the workload of the staff is smaller.

[0094] According to some embodiments of the present application, please refer to Figure 6 and Figure 7 , the number of the weak parts 63 is multiple, and the multiple weak parts 63 are arranged at intervals.

[0095] The number of the weak parts 63 can be any integer value such as two, three or four, and the specific number of the weak parts 63 can be determined according to the actual situation. In this embodiment, the number of the weak parts 63 is three, and the three weak parts 63 are arranged at equal intervals along the extension direction of the first body 611.

[0096] The thickness of the weak part 63 is less than the thickness of the first part 61 and less than the thickness of the second part 62.

[0097] By providing multiple weak parts 63, the multiple weak parts 63 can increase the number of connection points between the first part 61 and the second part 62, improve the connection stability between the first part 61 and the second part 62, and ensure the transportation stability of the connector 50 during transportation.

[0098] According to some embodiments of the present application, the first part 61 and the second part 62 are detachably connected.

[0099] The detachable connection between the first part 61 and the second part 62 can be a connection method such as snap connection, screw connection or interference connection between the first part 61 and the second part 62, and the specific connection method between the first part 61 and the second part 62 can be determined according to the actual situation.

[0100] The first part 61 and the second part 62 are detachably connected so that the first part 61 and the second part 62 can be connected and separated multiple times. In a state where the connector 50 is not connected to the battery management module 70, the first part 61 and the second part 62 are connected to fix the connector 50 to the end plate 30, thereby improving the position stability of the connector 50; when the connector 50 needs to be connected to the battery management module 70, the first part 61 and the second part 62 are separated to facilitate the connection of the connector 50 to the battery management module 70; in a state where the connector 50 is connected to the battery management module 70, the first part 61 and the second part 62 can be reconnected to fix the connector 50 to the end plate 30 again, thereby improving the position stability of the connector 50 and reducing the risk of the connector 50 being disconnected from the battery management module 70.

[0101] According to some embodiments of the present application, the first part 61 is snap-connected to the second part 62.

[0102] A snap portion is provided on one side of the first part 61 facing the second part 62, and a slot is provided on one side of the second part 62 facing the first part 61, and the snap portion is snap-connected to the slot.

[0103] By snap-connecting the first part 61 and the second part 62, it is easy to disassemble between the first part 61 and the second part 62. When assembling and connecting the connector 50 to the battery management module 70, only the snap part between the first part 61 and the second part 62 needs to be separated by force, which is convenient to operate and does not require other tools, reducing the workload of the staff.

[0104] According to some embodiments of the present application, the first bracket 60 is an integrally formed structure.

[0105] The first bracket 60 being an integrally formed structure means that the first part 61 and the second part 62 in the first bracket 60 are processed at one time and do not require secondary connection or secondary assembly. In the case where the first bracket 60 further includes a weak part 63, the first part 61, the second part 62 and the weak part 63 are all integrally formed.

[0106] Adopting the first bracket 60 as an integrally formed structure, the integrity of the first bracket 60 is better and the structural strength is higher. When the connector 50 is transported, the connector 50 can be fixed more firmly. And the first bracket 60 can be produced at one time, and the processing and manufacturing are more convenient.

[0107] According to some embodiments of the present application, the first part 61 includes a first body 611 and a fixing member 612. The first body 611 is connected to the second part 62, the fixing member 612 is disposed on the first body 611, and the fixing member 612 is connected to the end plate 30.

[0108] The first body 611 refers to the structure that provides a bearing function for the fixing member 612, and the first body 611 and the fixing member 612 can be of the same material.

[0109] The fixing member 612 can be a fastener such as a bolt, a rivet or a pin shaft, etc., which can be determined according to the actual situation.

[0110] The first body 611 provides a bearing and installation function for the fixing member 612, enabling the fixing member 612 to be stably installed on the first body 611. The first part 61 is connected to the end plate 30 through the fixing member 612, realizing the connection and fixation of the connector 50 and the end plate 30.

[0111] According to some embodiments of the present application, please refer to Figure 6 and Figure 7 , the fixing member 612 is a rivet.

[0112] Please refer to Figure 10 , a connection hole 31 is correspondingly provided on the end plate 30, and the rivet is riveted to the connection hole 31. The material of the rivet can be plastic, that is, the fixing member 612 can be a plastic rivet. Of course, the material of the rivet can also be metal.

[0113] Adopting the fixing member 612 as a rivet has a simple structure. The first part 61 is riveted to the end plate 30 through the rivet. In this way, during the transportation process of the connector 50, the connector 50 can be stably fixed on the end plate 30, restricting the displacement of the connector 50, improving the transportation stability of the connector 50, and effectively protecting the connector 50.

[0114] According to some embodiments of the present application, please refer to Figure 6 and Figure 7 , the first part 61 further includes a restraint portion 613. The restraint portion 613 is connected to the first body 611, and the restraint portion 613 has a through hole; the battery device 100 further includes a connecting member 80, and the connecting member 80 passes through the through hole.

[0115] The restraint portion 613 can be a restraint structure such as a hoop or a wire harness tie. The restraint portion 613 is connected to the first body 611. The connecting member 80 can be a copper bar, an aluminum bar or a wire harness, etc. In this embodiment, the connecting member 80 is a wire harness.

[0116] When the restraint portion 613 is a wire harness tie, the material of the wire harness tie can be made of plastic or other flexible materials. For example, the material of the wire harness tie can be nylon, polyester, polypropylene, etc. The wire harness tie includes a tie head 6131 and a tie 6132. The first body 611 has a first through hole 614 for the tie 6132 to pass through. The tie head 6131 has a locking hole 61311 formed therethrough. One end of the tie 6132 is connected to the tie head 6131, and the other end of the tie 6132 passes through and is locked in the locking hole 61311. The first through hole 614 refers to a hole structure formed through the first body 611. The first through hole 614 allows the tie 6132 to pass through, and the tie 6132 can move relative to the first through hole 614. The tie head 6131 refers to the head structure on the tie 6132 that can perform a locking function on the tie 6132.

[0117] In some embodiments, the tie 6132 is provided with a plurality of convex teeth 6133 along its length direction. The locking hole 61311 is a serrated hole, and the serrated hole can be engaged with the convex teeth 6133. By pulling the tie 6132, the corresponding convex teeth 6133 on the tie 6132 are locked and engaged with the serrated hole.

[0118] Through the setting of the restraint portion 613, the restraint portion 613 can be penetrated by the connecting member 80 (such as a copper bar, an aluminum bar or a wire harness, etc.) in the battery device 100, which plays a role in bundling and limiting the connecting member 80, improves the overall aesthetics and use convenience of the connecting member 80. The restraint portion 613 can also fix the connecting member 80 on one side of the end plate 30 to prevent it from loosening or being damaged due to movement or vibration. And under the fastening action of the restraint portion 613, the risk of friction and impact on the connecting member 80 on one side of the end plate 30 in the battery device 100 during transportation and use can be effectively reduced, and the service life of the connecting member 80 can be extended.

[0119] According to some embodiments of the present application, please combine Figure 5 and Figure 9 , one end of the circuit board 40 is clamped between the connector 50 and the second part 62.

[0120] One end of the circuit board 40 is clamped between the connector 50 and the second part 62, which means that one end of the circuit board 40 is located between the connector 50 and the second part 62, that is, the connector 50 and the second part 62 are respectively located on both sides of the thickness direction of the circuit board 40, and the second part 62 and the connector 50 play a role in clamping and fixing one end of the circuit board 40.

[0121] One end of the circuit board 40 is clamped and fixed by the second part 62 and the connector 50. The second part 62 can strengthen the connection between the circuit board 40 and the connector 50, enabling the circuit board 40 to be more firmly connected and fixed to the connector 50, making the connection integrity between the connector 50 and the circuit board 40 better, and the connector 50 is not prone to loosening from the circuit board 40.

[0122] According to some embodiments of the present application, please refer to Figure 6 and Figure 9 On one side of the connector 50 facing the second part 62, a first rivet post is provided. The second part 62 is provided with a positioning hole 622 for the first rivet post to pass through, and the first rivet post is thermally riveted and fixed to the second part 62.

[0123] The first rivet post refers to a rivet post structure provided on the connector 50. One section of the first rivet post passes through the positioning hole 622 of the second part 62. By heating the first rivet post, the first rivet post is melted and deformed, and the second part 62 and the connector 50 are thermally riveted and fixed. The number of the first rivet posts can be multiple, and the multiple first rivet posts are arranged at intervals along the outer periphery of the second part 62.

[0124] By providing a first rivet post on one side of the connector 50, the connector 50 is riveted to the second part 62 through the first rivet post, making the connector 50 and the second part 62 connected as a whole. One end of the circuit board 40 is located between the connector 50 and the second part 62, thereby clamping and fixing the circuit board 40, making the connection stability between the circuit board 40 and the connector 50 higher.

[0125] According to some embodiments of the present application, please refer to Figure 9 The second part 62 is provided with a first window 621. The first window 621 is used to expose a part of the circuit board 40, and the first window 621 is filled with a colloid.

[0126] The first window 621 refers to a through-hole structure provided on the second part 62. The first window 621 penetrates the thickness direction of the second part 62. The shape of the first window 621 can be circular, square, triangular, etc. In this embodiment, the shape of the first window 621 is square.

[0127] By providing the first window 621 on the second part 62, the first window 621 can expose a part of the circuit board 40. When the first window 621 is filled with a colloid, on the one hand, the colloid can cover the area of the circuit board 40 exposed relative to the second part 62, playing a role of shielding and certain protection for the circuit board 40. On the other hand, the colloid can fill the gap between the circuit board 40, the second part 62 and the connector 50, further bonding the circuit board 40, the second part 62 and the connector 50 firmly, and improving the connection stability between the circuit board 40 and the connector 50.

[0128] According to some embodiments of the present application, the first bracket 60 is an insulating member.

[0129] The first bracket 60 being an insulating member may mean that the first bracket 60 is made of an insulating material; alternatively, the first bracket 60 is made of a non-insulating material, and an insulating layer is provided on the surface of the first bracket 60. When the first bracket 60 is made of an insulating material, the first bracket 60 may be made of an insulating material such as plastic or plastic. An insulating material refers to a material that can prevent the flow of current and is widely used in fields such as power transmission, electronic devices, insulating coatings, insulating pipes, and insulating boards.

[0130] Adopting the first bracket 60 as an insulating member can reduce the risk of short circuit between the first bracket 60 and the circuit board 40, and the battery device 100 has higher safety.

[0131] The embodiments of the present application further provide an electrical device, and the electrical device includes the battery device 100 of any one of the foregoing embodiments.

[0132] For the electrical device provided by the embodiments of the present application, since the battery device 100 provided by any one of the foregoing embodiments is adopted, it has the same technical effects and will not be elaborated herein.

[0133] The embodiments of the present application further provide an assembly method for a battery device, which is applied to the battery device 100 of any one of the foregoing embodiments, and includes: fixing the connector 50 to the end plate 30 through the first bracket 60; separating the first part 61 and the second part 62; connecting the connector 50 to the battery management module 70.

[0134] Separating the first part 61 and the second part 62 can break the weak part 63 connecting the first part 61 and the second part 62, for example, breaking or cutting the weak part 63.

[0135] When assembling the connector 50, with the first part 61 and the second part 62 in a connected state, the connector 50 can be fixed to the end plate 30 through the first bracket 60, and the connector 50 is firmly fixed, and the connector 50 will not shake or vibrate during transportation. When the connector 50 is transferred to the target position and assembled and connected to the battery management module 70, the first part 61 and the second part 62 are separated, so that the connector 50 is separated from the end plate 30, the connector 50 regains its freedom, the connector 50 can move relative to the end plate 30, and the position of the connector 50 can be adjusted to facilitate quickly assembling and connecting the connector 50 to the battery management module 70.

[0136] In some embodiments, please refer to Figures 3 to 10, the battery device 100 includes a battery cell group 24, an end plate 30, a circuit board 40, a battery management module 70, and a connector 50. The end plate 30 is disposed at one end of the battery cell group 24 along the first direction X; at least a part of the circuit board 40 is disposed on one side of the battery cell group 24 along the second direction Y, and the second direction Y is perpendicular to the first direction X; the connector 50 is disposed on the side of the end plate 30 facing away from the battery cell group 24, and the connector 50 is electrically connected to the circuit board 40. Wherein, the battery device further includes a first bracket 60, and the first bracket 60 includes a first part 61 and a second part 62. The first part 61 is connected to the end plate 30, and the second part 62 is connected to the connector 50. The first part 61 and the second part 62 have a connected state and a separated state. In the connected state, the connector 50 is fixed to the end plate 30 through the first bracket 60, and the connector 50 is separated from the battery management module 70. In the separated state, the connector 50 is electrically connected to the battery management module 70. The first bracket 60 further includes a weak part 63. The first part 61 is connected to the second part 62 through the weak part 63. When the weak part 63 breaks, the first part 61 is separated from the second part 62. The number of the weak parts 63 is multiple, and the multiple weak parts 63 are arranged at intervals.

[0137] The first part 61 in the first bracket 60 is connected to the end plate 30, and the second part 62 is connected to the connector 50. When assembling the connector 50, the first part 61 and the second part 62 are in the connected state, so that the connector 50 is fixed to the end plate 30 through the first bracket 60, and the connector 50 is firmly fixed, and the connector 50 will not shake or vibrate during transportation. When transferring the battery cell group 24 and the connector 50 to the target position and assembling and connecting them to the battery management module 70, the first part 61 and the second part 62 are changed from the connected state to the separated state, so that the connector 50 is separated from the end plate 30, the connector 50 resumes freedom of movement, the connector 50 can move relative to the end plate 30, and the position of the connector 50 can be adjusted to facilitate quickly assembling and connecting the connector 50 to the battery management module 70. This abandons the conventional method of fixing the connector 50 to the end plate 30 or the battery cell group 24 by using electrical tape. And when transferring the connector 50 and the battery cell group 24 to assemble with the battery management module 70, it is not necessary to tear the electrical tape when assembling the connector 50 and the battery management module 70, avoiding the risk of damaging the circuit board 40 during the tape tearing process. The weak part 63 connects the first part 61 and the second part 62. The weak part 63 can not only effectively connect and fix the first part 61 and the second part 62, but also when the first part 61 and the second part 62 need to be separated, the staff can more easily break or cut the weak part 63 between the first part 61 and the second part 62, so as to quickly separate the first part 61 and the second part 62, the operation is convenient and fast, and the workload of the staff is smaller.

[0138] In some embodiments, the first part 61 includes a first body 611 and a fixing member 612. The first body 611 is used to connect with the second part 62. The fixing member 612 is disposed on the first body 611 and is used to connect with the end plate 30. The fixing member 612 is a plastic rivet. The first part 61 further includes a constraining portion 613. The constraining portion 613 is connected to the first body 611 and has a through hole. The battery device 100 further includes a connecting member 80 which passes through the through hole.

[0139] The first body 611 provides a bearing and installation function for the fixing member 612, enabling the fixing member 612 to be stably installed on the first body 611. The first part 61 is connected to the end plate 30 through the fixing member 612, realizing the connection and fixation between the connector 50 and the end plate 30. Adopting the fixing member 612 as a plastic rivet has a simple structure. The first part 61 is riveted to the end plate 30 through the plastic rivet. In this way, during the transportation of the connector 50, the connector 50 can be stably fixed on the end plate 30, restricting the displacement of the connector 50 and improving the transportation stability of the connector 50. The plastic rivet effectively protects the connector 50. The constraining portion 613 can be penetrated by the connecting member 80 (such as a copper bar, an aluminum bar or a wire harness, etc.) in the battery device 100, playing a role in bundling and positioning the connecting member 80, improving the overall aesthetics and usability of the connecting member 80. The constraining portion 613 can also fix the connecting member 80 on one side of the end plate 30, preventing it from becoming loose or damaged due to movement or vibration.

[0140] In some embodiments, one end of the circuit board 40 is clamped between the connector 50 and the second part 62. A first riveting post is provided on the side of the connector 50 facing the second part 62. The second part 62 is provided with a positioning hole 622 for the first riveting post to pass through, and the first riveting post is thermally riveted and fixed on the second part 62. The second part 62 is provided with a first window 621 which is used to expose a part of the circuit board 40, and the first window 621 is filled with a colloid. The first bracket 60 is an integrally formed structure.

[0141] One end of the circuit board 40 is clamped and fixed by the second part 62 and the connector 50. The second part 62 can strengthen the connection between the circuit board 40 and the connector 50, enabling the circuit board 40 to be more firmly connected and fixed to the connector 50, making the connection integrity between the connector 50 and the circuit board 40 better, and it is not easy for the connector 50 to become loose from the circuit board 40. The connector 50 is riveted to the second part 62 through the first rivet post, making the connector 50 and the second part 62 connected as a whole, while one end of the circuit board 40 is located between the connector 50 and the second part 62, thereby clamping and fixing the circuit board 40, making the connection stability between the circuit board 40 and the connector 50 higher. The first window 621 can expose a part of the circuit board 40. By filling the colloid in the first window 621, on the one hand, the colloid can cover the area of the circuit board 40 exposed relative to the second part 62, providing a shielding and certain protection for the circuit board 40. On the other hand, the colloid can fill the gap between the circuit board 40, the second part 62 and the connector 50, further bonding the circuit board 40, the second part 62 and the connector 50 firmly, and improving the connection stability between the circuit board 40 and the connector 50. The first bracket 60 is adopted as an integrally formed structure, with better integrity and higher structural strength, and can fix the connector 50 more firmly during the transportation of the connector 50. And the first bracket 60 can be produced in one step, making the manufacturing and processing more convenient.

[0142] In some embodiments, the manufacturing method includes: fixing the connector 50 to the end plate 30 through the first bracket 60; breaking the weak part 63 connecting the first part 61 and the second part 62; connecting the connector 50 with the battery management module 70.

[0143] When assembling the connector 50, with the first part 61 and the second part 62 in a connected state, the connector 50 can be fixed to the end plate 30 through the first bracket 60, and the connector 50 is fixed firmly without shaking or jitter during transportation. When the connector 50 is transferred to the target position and assembled and connected with the battery management module 70, the first part 61 and the second part 62 are separated. In this way, the connector 50 is separated from the end plate 30, and the connector 50 regains its freedom of movement. The connector 50 can move relative to the end plate 30 to adjust the position of the connector 50, facilitating the quick assembly and connection of the connector 50 with the battery management module 70. The first part 61 and the second part 62 are separated by breaking, which is simple for the staff to operate. Only a little force is needed to bend the weak part 63, reducing the workload and improving the assembly efficiency of the battery device 100.

[0144] Although the present application has been described with reference to the preferred embodiments, various modifications can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell group; an end plate, disposed at one end of the battery cell group along a first direction; a circuit board, at least partially disposed on one side of the battery cell group along a second direction, the second direction being perpendicular to the first direction; a connector, disposed on a side of the end plate facing away from the battery cell group, the connector being electrically connected to the circuit board; Battery management module; The first bracket includes a first part and a second part, the first part is connected to the end plate, and the second part is connected to the connector; the first part and the second part have a connected state and a separated state, in which the connector is fixed to the end plate through the first bracket, and the connector is separated from the battery management module; in the separated state, the connector is electrically connected to the battery management module.

2. The battery device according to claim 1, wherein The first bracket further includes a weak portion, through which the first portion is connected to the second portion, and the weak portion is configured to be broken under an external force, so that the first bracket is transferred from the connected state to the separated state.

3. The battery device according to claim 2, wherein There are multiple weak parts, and the multiple weak parts are arranged at intervals.

4. The battery device according to claim 1, wherein, The first part and the second part are detachably connected.

5. The battery device according to claim 4, characterized in that, The first part is engaged with the second part.

6. The battery device according to any one of claims 1-3, characterized in that, The first bracket is an integrally formed structure.

7. The battery device according to any one of claims 1-5, characterized in that, The first part includes a first body and a fixing member, the first body is connected to the second part, the fixing member is provided on the first body, and the fixing member is connected to the end plate.

8. The battery device according to claim 7, wherein, The fixing piece is a rivet.

9. The battery device according to claim 7, characterized in that, The first part further includes a restraining portion connected to the first body, and the restraining portion has a through hole; The battery device includes a connecting piece, and the connecting piece is passed through the through hole.

10. The battery device according to any one of claims 1-5, characterized in that, One end of the circuit board is sandwiched between the connector and the second portion.

11. The battery device according to claim 10, characterized in that, A first rivet column is provided on a side of the connector facing the second part, and a positioning hole for the first rivet column to pass through is provided on the second part. The first rivet column is fixed to the second part by hot riveting.

12. The battery device according to claim 11, characterized in that, The second portion is provided with a first window, the first window is used to expose a portion of the circuit board, and the first window is filled with colloid.

13. The battery device according to claim 1, characterized in that, The first bracket is an insulating member.

14. An electrical device, characterized in that, A battery device comprising the battery device according to any one of claims 1 to 13.

15. An assembly method for a battery device, applied to the battery device according to any one of claims 1-13, characterized in that, include: fixing the connector to the end plate via the first bracket; separating the first portion and the second portion; Connect the connector to the battery management module.

Images