Battery device, power-consuming device, and battery device assembly method

Abstract

The embodiments of the present application provide a battery device, an electrical device, and an assembly method for a battery device. The battery device 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 arranged at one end of 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. The technical solution provided by the present application can be firmly fixed to the end plate during the transportation of the connector, thereby improving the transportation stability of the connector to reduce the risk of damage to the connector during transportation; and the connector can be separated from the end plate when assembled with the battery management module, which is beneficial to the assembly of the connector.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, 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 experienced rapid development. Within the electric vehicle sector, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also growing. As a core component of new energy vehicles, battery devices have high requirements for stability and reliability.

[0003] During the assembly process of the battery device, after the battery cell group, circuit board and connector are assembled and connected, the battery cell group and the connector need to be transported a certain distance to be assembled and connected with the battery management module. During the transportation process, since the connector has not yet been connected to the battery management module, the connector has a certain degree of freedom relative to the battery cell group. Conventional methods generally use electrical tape 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 location and assembled with the battery management module, the electrical tape is torn off. Since the electrical tape may bond to the circuit board while bonding the connector, there is a risk of damaging the circuit board during the tearing process. Summary of the Invention

[0004] The present application provides a battery device, an electrical device and an assembly method for a battery device, which can be firmly fixed to the end plate during the transportation of the connector, thereby improving the transportation stability of the connector and reducing the risk of damage to the connector during transportation; and, the connector can be separated from the end plate when assembled with the battery management module, which is conducive to the assembly of the connector.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present 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, wherein the end plate is arranged at one end of the battery cell group along a first direction; the circuit board is at least partially arranged 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 arranged on the side of the end plate 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 by 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.

[0007] In the technical solution of the embodiment of the present application, a first bracket is provided, wherein a first portion of the first bracket is connected to the end plate, and a second portion is connected to the connector. When assembling the connector, the first portion and the second portion are in a connected state, thereby securing the connector to the end plate via the first bracket. The connector is securely fixed and prevents shaking or jittering during transportation. When the battery pack and connector are transferred to a target location for assembly and connection with a battery management module, the first portion and the second portion are transferred from the connected state to a separated state. This separates the connector from the end plate, restoring its freedom of movement and allowing the connector to move relative to the end plate, allowing for adjustment of the connector's position and facilitating rapid assembly and connection of the connector to the battery management module. This eliminates the conventional method of securing the connector to the end plate or battery pack using electrical tape. Furthermore, when transferring the connector and battery pack to be assembled with the battery management module, the tedious operation of removing the electrical tape is eliminated, thereby avoiding the risk of damaging the circuit board during the tape removal process.

[0008] According to some embodiments of the present application, the first bracket further includes a weak portion, the first part is connected to the second part through the weak portion, and the weak portion is configured to be able to break under the action of an external force, so that the first bracket is changed from a connected state to a separated state.

[0009] In the above scheme, by setting a 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 break or cut the weak part between the first part and the second part more labor-savingly, thereby quickly separating the first part and the second part. The operation is convenient and quick, and the workload of the staff is reduced.

[0010] According to some embodiments of the present application, there are multiple weak parts, and the multiple weak parts are arranged at intervals.

[0011] In the above solution, by setting up 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 of the first part and the second part, and ensure the transportation stability of the connector during transportation.

[0012] According to some embodiments of the present application, the first part and the second part are detachably connected.

[0013] In the above solution, the first and second parts are detachably connected, allowing them to be connected and disconnected multiple times. When the connector is not connected to the battery management module, the first and second parts are connected to secure the connector to the end plate, thereby improving the connector's positional stability. When the connector needs to be connected to the battery management module, the first and second parts are separated to facilitate connection between the connector and the battery management module. When the connector is connected to the battery management module, the first and second parts can be reconnected to secure the connector to the end plate again, thereby improving the connector's positional stability and reducing the risk of the connector and battery management module becoming disconnected.

[0014] According to some embodiments of the present application, the first part is snap-connected with the second part.

[0015] In the above solution, by snapping the first part and the second part together, the first part and the second part are easy to disassemble. In this way, when assembling and connecting the connector with the battery management module, it is only necessary to use force to separate the snap part between the first part and the second part. The operation is convenient and no other tools are required, thereby reducing the workload of the staff.

[0016] According to some embodiments of the present application, the first bracket is an integrally formed structure.

[0017] In the above solution, the first bracket is an integrally formed structure, which has better integrity and higher structural strength, and can more firmly fix the connector during transportation. In addition, the first bracket can be produced in one go, making processing and manufacturing more convenient.

[0018] 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, the fixing member is arranged on the first body, and the fixing member is connected to the end plate.

[0019] In the above solution, the first body provides bearing and installation functions for the fixing member, so that the fixing member can be stably installed on the first body. The first part is connected to the end plate through the fixing member to achieve connection and fixation between the connector and the end plate.

[0020] According to some embodiments of the present application, the fixing member is a rivet.

[0021] In the above scheme, the fixing part is a rivet with a simple structure. The first part is riveted to the end plate through the rivet. In this way, during the transportation of the connector, the connector can be stably fixed on the end plate, limiting the displacement of the connector, improving the transportation stability of the connector, and effectively protecting the connector.

[0022] According to some embodiments of the present application, the first part further includes a restraining portion, which is connected to the first body and has a through hole; the battery device further includes a connecting member, which is passed through the through hole.

[0023] In the above scheme, through the setting of the constraint part, the constraint part can be used for the connector in the battery device to pass through, and play a role in bundling and limiting the connector, thereby improving the overall aesthetics and ease of use of the connector. The constraint part can also fix the connector on one side of the end plate to prevent it from loosening or being damaged due to movement or vibration.

[0024] According to some embodiments of the present application, one end of the circuit board is clamped between the connector and the second part.

[0025] In the above solution, one end of the circuit board is clamped and fixed by the second part and the connector. The second part can strengthen the connection between the circuit board and the connector, allowing the circuit board to be more firmly connected and fixed to the connector, making the connection between the connector and the circuit board more integrated and preventing the connector from loosening from the circuit board.

[0026] According to some embodiments of the present application, a first rivet column is provided on a side of the connector facing the second part, the second part is provided with a positioning hole for the first rivet column to pass through, and the first rivet column is fixed to the second part by hot riveting.

[0027] In the above solution, a first rivet column is provided on one side of the connector, and the connector is riveted to the second part through the first rivet column, 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.

[0028] According to some embodiments of the present application, 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.

[0029] In the above solution, the second portion is provided with a first window, which exposes a portion of the circuit board. The first window is filled with a colloid. On the one hand, the colloid covers the area of ​​the circuit board exposed relative to the second portion, providing shielding and a certain degree of protection for the circuit board. On the other hand, the colloid fills the gap between the circuit board, the second portion, and the connector, further firmly bonding the circuit board, the second portion, and the connector, and improving the stability of the connection between the circuit board and the connector.

[0030] According to some embodiments of the present application, the first bracket is an insulating member.

[0031] In the above solution, the first bracket is used as an insulating member, which can reduce the risk of short circuit between the first bracket and the circuit board, and the battery device is safer.

[0032] In a second aspect, an embodiment of the present application further provides an electrical device, which includes the battery device of any of the aforementioned embodiments.

[0033] 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 aforementioned embodiments. The manufacturing method includes: fixing the connector to the end plate through a first bracket; separating the first part and the second part; and connecting the connector to the battery management module.

[0034] In the above solution, when assembling the connector, the first and second parts are connected, and the connector can be fixed to the end plate via the first bracket. The connector is firmly fixed and will not shake or vibrate during transportation. When the connector is transferred to the target location and assembled with the battery management module, the first and second parts are separated. This separates the connector from the end plate, restoring the connector's freedom, allowing the connector to move relative to the end plate and adjust its position, facilitating quick assembly and connection of the connector to the battery management module.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0038] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0039] Figure 3 This is a schematic structural diagram of a connector in a battery device provided in some embodiments of the present application before being assembled with a battery management module;

[0040] Figure 4 A partial schematic diagram of the assembled connector and battery management module in a battery device provided in some embodiments of the present application;

[0041] Figure 5 A partial schematic diagram of a connector and a battery management module in a battery device provided in some embodiments of the present application before assembly;

[0042] Figure 6 A schematic structural diagram of a first bracket in a battery device provided in some embodiments of the present application;

[0043] Figure 7 A schematic structural diagram of another angle of view of the first bracket in the battery device provided in some embodiments of the present application;

[0044] Figure 8 A schematic diagram of the structure of a wire harness tie in a first bracket of a battery device provided in some embodiments of the present application;

[0045] Figure 9 A partial schematic diagram from another angle before the connector and the battery management module are assembled in the battery device according to some embodiments of the present application;

[0046] Figure 10 A schematic structural diagram of an end plate in a battery device provided in some embodiments of the present application.

[0047] Icon: 1000-vehicle; 100-battery device; 200-controller; 300-motor; 10-housing; 11-first sub-housing; 12-second sub-housing; 20-battery cell; 24-battery cell group; 30-end plate; 31-connecting hole; 40-circuit board; 50-connector; 60-first bracket; 61-first part; 611-first body; 612-fixing member; 613-constraint part; 6131-cable tie head; 61311-locking hole; 6132-cable 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-connector; X-first direction; Y-second direction. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0050] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0052] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. 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 indicates that the related objects are in an "or" relationship.

[0053] The term "multiple" used in this application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two (including two) groups, and the term "multiple sheets" refers to more than two (including two) sheets.

[0054] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell groups for providing voltage and capacity. A battery cell group may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0055] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is a battery module formed by arranging and fixing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0056] In some embodiments, the battery device may be a battery pack (BatteryPack), which includes a box and one or more battery cell groups, wherein the battery cell groups are accommodated in the box.

[0057] As an example, the battery cell group may be a battery module, and the battery cell group may be accommodated in the box by fixing the battery module in the box.

[0058] As an example, the battery cell group may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0059] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the bottom plate of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0060] In some embodiments, the battery device may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0061] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a type of battery that can be continuously used by activating the active material by charging the battery cell after discharge.

[0062] The battery cells may be, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.

[0063] A battery cell typically includes an electrode assembly. This assembly consists of a positive electrode, a negative electrode, and a separator. During the charge and discharge process, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, located between the positive and negative electrodes, prevents short circuits while allowing the active ions to pass through.

[0064] 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.

[0065] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0066] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, the metal foil can be made of silver-plated stainless steel, copper, aluminum, carbon electrodes, carbon, nickel, or titanium. A composite current collector can include a polymer base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as aluminum, aluminum alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys) onto a polymer substrate (such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0067] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for battery cells may also be used.

[0068] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0069] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, the metal foil may be silver-plated aluminum, silver-plated stainless steel, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium.

[0070] In some embodiments, the negative electrode current collector has two opposite surfaces in its 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.

[0071] As an example, the negative electrode active material may adopt the negative electrode active material for battery cells that is 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 materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for battery cells may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0072] In some embodiments, the diaphragm is an isolation membrane. The present application has no particular limitation on the type of isolation membrane, and any known isolation membrane with a porous structure having good chemical stability and mechanical stability can be selected.

[0073] As an example, the primary 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 separate component positioned between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0074] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode, and serves to transport ions and isolate the positive and negative electrodes.

[0075] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0076] In some embodiments, the electrode assembly is a laminate structure.

[0077] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0078] In some embodiments, the housing includes an end cap and a shell. The shell has an opening, and the end cap closes the opening to form a sealed space for accommodating the electrode assembly, electrolyte, and other substances. The shell may have one or more openings. One or more end caps may also be provided.

[0079] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to a tab of the electrode assembly. The electrode terminal may be directly connected to the tab or indirectly connected to the tab via a current collector. The electrode terminal may be provided on an end cap or on the housing.

[0080] In some embodiments, the housing is provided with an explosion-proof valve for releasing the internal pressure of the battery cell.

[0081] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, and a polygonal battery. The polygonal battery is, for example, a hexagonal battery, etc. There is no special limitation in the embodiments of the present application.

[0082] During the assembly process of the battery device, after the battery cell group, circuit board and connector are assembled and connected, since the connection location of the battery management module and the connector may be different from the current assembly location, there is a need to transport the battery cell group, circuit board and connector to complete the assembly connection with the battery management module. During the transportation of the connector, since the connector has not yet been 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 location and assembled with the battery management module, the electrical tape is torn off. Since the electrical tape may bond to the circuit board while bonding the connector, there is a risk of damaging the circuit board during the tearing process.

[0083] 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, wherein the end plate is arranged at one end of the battery cell group along the first direction; the circuit board is at least partially arranged on one side of the battery cell group along the second direction, and the second direction is perpendicular to the first direction; the connector is arranged on the side of the end plate 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 by 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.

[0084] In the battery device provided by the embodiment of the present application, the first portion of the first bracket is connected to the end plate, and the second portion is connected to the connector. When assembling the connector, the first portion and the second portion are in a connected state. In this way, the connector is fixed to the end plate via the first bracket, the connector is firmly fixed, and the connector does not shake or vibrate during transportation. When the battery cell group and the connector are transferred to the target location and assembled with the battery management module, the first portion and the second portion are switched from the connected state to the separated state. This separates the connector from the end plate, restores the connector's freedom, and allows the connector to move relative to the end plate. Adjusting the connector's position facilitates quick assembly and connection of the connector with the battery management module.

[0085] The battery device disclosed in the embodiments of the present application can be used, but is not limited to, in electrical equipment such as vehicles, ships, or aircraft. The battery device disclosed in the present application can be used to form a power supply system for the electrical equipment.

[0086] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0087] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0088] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of the vehicle 1000 provided for some embodiments of the present application. The 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 or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can be used as an operating power source for the vehicle 1000 and for the circuit system of the vehicle 1000, such as for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0089] The 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, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0090] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0091] Please refer to Figure 2 , Figure 2This is a schematic diagram of the structural decomposition of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes a housing 10 and a battery cell 20, and the battery cell 20 is accommodated in the housing 10. The housing 10 is used to provide a storage space for the battery cell 20, and the housing 10 can adopt a variety of structures. In some embodiments, the housing 10 may include a first sub-housing 11 and a second sub-housing 12, and the first sub-housing 11 and the second sub-housing 12 cover each other, and the first sub-housing 11 and the second sub-housing 12 jointly define a storage space for accommodating the battery cell 20. The second sub-housing 12 may be a hollow structure with one end open, and the first sub-housing 11 may be a plate-shaped structure, and the first sub-housing 11 covers the open side of the second sub-housing 12, so that the first sub-housing 11 and the second sub-housing 12 jointly define a storage space; the first sub-housing 11 and the second sub-housing 12 may also be hollow structures with one side open, and the open side of the first sub-housing 11 covers the open side of the second sub-housing 12.

[0092] In the battery device 100, there may be multiple battery cells 20, which may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel configurations within the battery device 10. The battery cells 20 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire battery device 20 may be housed within the housing 10. Alternatively, the battery device 100 may comprise a battery module formed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid configuration, and then the battery modules may be further connected in series, in parallel, or in a hybrid configuration to form a single unit housed within the housing 10.

[0093] The battery device 100 may further include other structures. For example, the battery device 100 may further include a busbar for achieving electrical connection between the plurality of battery cells 20 .

[0094] The present application provides a battery device. 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 arranged at one end of the battery cell group 24 along the first direction X; the circuit board 40 is at least partially arranged 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 arranged on the side of the end plate 30 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.

[0095] The first portion 61 and the second portion 62 constitute the first bracket 60. The first portion 61 and the second portion 62 can be integrally formed or detachably connected, meaning that the first portion 61 and the second portion 62 can be connected and disconnected multiple times. The first portion 61 and the second portion 62 have a connected state and a disconnected state, meaning that the first portion 61 and the second portion 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 yet assembled with the battery management module 70, the first portion 61 and the second portion 62 of the first bracket 60 are in the connected state. The first bracket 60 is a single unit, and the connector 50 can be fixed to the end plate 30 via 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 limited.

[0096] When the connector 50 is transferred to be assembled and connected with 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 makes it easy to adjust the position of the connector 50 and allow the connector 50 to be assembled and connected with the battery management module 70. After assembly, the battery management module 70 is connected to the end plate 30.

[0097] The connector 50 is mainly used to connect 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.

[0098] The battery management module 70 can be understood as a module that performs information collection, control, safety protection, and external communication on the battery cell group 24. The battery management module 70 can include at least one of a battery cell monitoring controller (Cell Monitor Controller) and a battery management unit (BMU).

[0099] The end plate 30 refers to an end plate 30 structure provided on one side of the battery cell group 24 along a first direction X. The first direction X may be perpendicular to the outer surface of the battery cell with the largest area 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 used to fix the battery cell 20 in a battery module. The end plate 30 may also be a side wall of the box body 10 or a beam structure within the box body 10. For example, an end plate 30 is provided within 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 provided in the battery compartment, and the battery management module 70 is provided in the electrical compartment. In this case, the end plate 30 acts as a beam structure within 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 cell 20, thereby improving the service life of the battery cell 20.

[0100] At least a portion 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 portion of the circuit board 40 is disposed on one side of the battery cell group 24 along the second direction Y, and a portion 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, the entire circuit board 40 may also be located on one side of the battery cell group 24 along the second direction Y.

[0101] 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, so that the connector 50 is fixed to the end plate 30 through the first bracket 60, the connector 50 is firmly fixed, and the connector 50 will not shake or vibrate during transportation. When the battery cell group 24 and the connector 50 are transferred to the target position and assembled with the battery management module 70, the first part 61 and the second part 62 are converted from a connected state to a separated state, so that the connector 50 is separated from the end plate 30, the connector 50 regains its freedom, and the connector 50 can move relative to the end plate 30 to adjust the position of the connector 50, so as to facilitate the rapid assembly and connection of the connector 50 with the battery management module 70, and abandon the conventional technology of using electrical tape to fix the connector 50 on the end plate 30 or the battery cell group 24. Moreover, when the connector 50 and the battery cell group 24 are transferred to be assembled with the battery management module 70, there is no need to tear off the electrical tape, thereby avoiding the risk of damaging the circuit board 40 during the tearing process.

[0102] According to some embodiments of this application, please combine Figure 6 and Figure 7The first bracket 60 also includes a weak portion 63, the first portion 61 is connected to the second portion 62 through the weak portion 63, and the weak portion 63 is configured to be broken under the action of an external force, so that the first bracket 60 is transferred from a connected state to a separated state.

[0103] The weak portion 63 refers to the connecting structure between the first portion 61 and the second portion 62. The weak portion 63 is a region of the first bracket 60 with relatively weak structural strength or stability. When the first bracket 60 is subjected to a certain external force, the weak portion 63 becomes a fragile area and is the first to fracture. The strength of the weak portion 63 is less than that of the first portion 61, and the strength of the weak portion 63 is also less than that of the second portion 62, meaning that the weak portion 63 is a weak area in the first bracket 60. For example, the thickness of the weak portion 63 may be less than that of the first portion 61 and the second portion 62, or the material of the weak portion 63 may be different from that of the first portion 61 and the second portion 62, meaning that the strength of the weak portion 63 is less than that of the first portion 61 and the second portion 62. Alternatively, the thickness of the weak portion 63 may be less than that of the first portion 61 and the second portion 62, and the strength of the weak portion 63 is less than that of the first portion 61 and the second portion 62.

[0104] By setting the weak portion 63 between the first part 61 and the second part 62, the weak portion 63 connects the first part 61 and the second part 62. The weak portion 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 portion 63 between the first part 61 and the second part 62, thereby quickly separating the first part 61 and the second part 62. The operation is convenient and quick, and the workload of the staff is reduced.

[0105] According to some embodiments of this application, please combine Figure 6 and Figure 7 There are multiple weak parts 63, and the multiple weak parts 63 are arranged at intervals.

[0106] The number of the weak portions 63 can be any integer value such as two, three or four, and the specific number of the weak portions 63 can be determined according to actual conditions. In this embodiment, the number of the weak portions 63 is three, and the three weak portions 63 are evenly spaced along the extension direction of the first body 611.

[0107] The thickness of the weak portion 63 is smaller than the thickness of the first portion 61 , and the thickness of the weak portion 63 is smaller than the thickness of the second portion 62 .

[0108] By providing multiple weak portions 63 , the multiple weak portions 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 the transit process.

[0109] According to some embodiments of the present application, the first part 61 and the second part 62 are detachably connected.

[0110] The first part 61 and the second part 62 are detachably connected, and the connection method between the first part 61 and the second part 62 can be a snap connection, a screw connection or an interference connection. The specific connection method of the first part 61 and the second part 62 can be determined according to actual conditions.

[0111] The first portion 61 and the second portion 62 are detachably connected so that the first portion 61 and the second portion 62 can be connected and separated multiple times. When the connector 50 is not connected to the battery management module 70, the first portion 61 and the second portion 62 are connected to fix the connector 50 to the end plate 30, thereby improving the positional stability of the connector 50. When the connector 50 needs to be connected to the battery management module 70, the first portion 61 and the second portion 62 are separated to facilitate the connection of the connector 50 to the battery management module 70. When the connector 50 is connected to the battery management module 70, the first portion 61 and the second portion 62 can be reconnected to fix the connector 50 to the end plate 30 again, thereby improving the positional stability of the connector 50 and reducing the risk of the connector 50 and the battery management module 70 becoming disconnected.

[0112] According to some embodiments of the present application, the first portion 61 is snap-connected with the second portion 62 .

[0113] A buckle portion is provided on one side of the first portion 61 facing the second portion 62 , and a slot is provided on one side of the second portion 62 facing the first portion 61 , and the buckle portion is engaged with the slot.

[0114] By snapping the first part 61 and the second part 62 together, the first part 61 and the second part 62 are easy to disassemble. In this way, when assembling and connecting the connector 50 with the battery management module 70, it is only necessary to use force to separate the snap part between the first part 61 and the second part 62. The operation is convenient and does not require other tools, thereby reducing the workload of the staff.

[0115] According to some embodiments of the present application, the first bracket 60 is an integrally formed structure.

[0116] The first bracket 60 is an integrally formed structure, meaning that the first portion 61 and the second portion 62 of the first bracket 60 are manufactured in one piece, and do not require secondary connection or assembly. If the first bracket 60 also includes a weakened portion 63, the first portion 61, the second portion 62, and the weakened portion 63 are all integrally formed.

[0117] The first bracket 60 is an integrally formed structure, which improves the integrity and structural strength of the first bracket 60, and can more firmly fix the connector 50 when the connector 50 is transported. In addition, the first bracket 60 can be produced in one go, making it more convenient to manufacture.

[0118] 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 .

[0119] The first body 611 is a structure that provides a bearing function for the fixing member 612 . The first body 611 and the fixing member 612 may be made of the same material.

[0120] The fixing member 612 may be a fastener such as a bolt, a rivet or a pin, and the specific method may be determined according to actual conditions.

[0121] The first body 611 provides bearing and installation functions for the fixing member 612 , allowing 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 , thereby achieving connection and fixation between the connector 50 and the end plate 30 .

[0122] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , the fixing member 612 is a rivet.

[0123] Please refer to Figure 10 The end plate 30 is provided with a corresponding connection hole 31, 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.

[0124] The fixing part 612 is a rivet with a simple structure. The first part 61 is riveted to the end plate 30 through the rivet. In this way, during the transportation of the connector 50, the connector 50 can be stably fixed on the end plate 30, limiting the displacement of the connector 50, improving the transportation stability of the connector 50, and effectively protecting the connector 50.

[0125] According to some embodiments of this application, please refer to Figure 6 and Figure 7The first portion 61 further includes a restraining portion 613 , which is connected to the first body 611 and has a through hole. The battery device 100 further includes a connecting member 80 , which is passed through the through hole.

[0126] The restraining portion 613 may be a restraining structure such as a clamp or a wire tie, and the restraining portion 613 is connected to the first body 611 . The connecting member 80 may be a copper bar, an aluminum bar, or a wire harness, etc. In this embodiment, the connecting member 80 is a wire harness.

[0127] When the restraining portion 613 is a cable tie, the cable tie can be made of plastic or other flexible materials, such as nylon, polyester, or polypropylene. The cable tie includes a cable tie head 6131 and a cable tie 6132. The first body 611 has a first through-hole 614 through which the cable tie 6132 passes. The cable tie head 6131 has a locking hole 61311 extending therethrough. One end of the cable tie 6132 is connected to the cable tie head 6131, and the other end of the cable tie 6132 is inserted into and locked in the locking hole 61311. The first through-hole 614 is a hole structure extending through the first body 611. The first through-hole 614 allows the cable tie 6132 to pass through, and the cable tie 6132 is movable relative to the first through-hole 614. The cable tie head 6131 is a head structure on the cable tie 6132 that performs a locking function on the cable tie 6132.

[0128] In some embodiments, the cable tie 6132 is provided with a plurality of protruding teeth 6133 along its length direction, and the locking hole 61311 is a serrated hole, which can be snap-fitted with the protruding teeth 6133. By pulling the cable tie 6132, the corresponding protruding teeth 6133 on the cable tie 6132 are locked and fitted with the serrated hole.

[0129] The restraining portion 613 allows for the insertion of connectors 80 (e.g., copper bars, aluminum bars, or wiring harnesses) within the battery assembly 100, providing a means of bundling and retaining the connectors 80, enhancing their overall aesthetics and ease of use. The restraining portion 613 also secures the connectors 80 to the side of the end plate 30, preventing them from becoming loose or damaged due to movement or vibration. Furthermore, the tightening action of the restraining portion 613 effectively reduces the risk of friction and impact on the connectors 80 on the side of the end plate 30 of the battery assembly 100 during transportation and use, thereby extending the service life of the connectors 80.

[0130] According to some embodiments of this application, please combine Figure 5 and Figure 9 One end of the circuit board 40 is clamped between the connector 50 and the second portion 62 .

[0131] 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.

[0132] 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, so that the circuit board 40 can be more firmly connected and fixed to the connector 50, making the connection between the connector 50 and the circuit board 40 more integrated and preventing the connector 50 from loosening from the circuit board 40.

[0133] According to some embodiments of this application, please combine Figure 6 and Figure 9 A first rivet post is provided on a side of the connector 50 facing the second portion 62 , and a positioning hole 622 is provided on the second portion 62 for the first rivet post to pass through. The first rivet post is fixed to the second portion 62 by hot riveting.

[0134] The first rivet stud is a rivet stud structure provided on the connector 50. A section of the first rivet stud extends through the positioning hole 622 of the second portion 62. The first rivet stud can be heated to cause thermal melting and deformation, thereby thermally riveting the second portion 62 to the connector 50. There can be multiple first rivet studs, which are spaced apart along the periphery of the second portion 62.

[0135] By providing a first rivet column on one side of the connector 50, the connector 50 is riveted to the second part 62 through the first rivet column, so that the connector 50 and the second part 62 are connected as a whole, and 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, so that the connection stability between the circuit board 40 and the connector 50 is higher.

[0136] According to some embodiments of this application, please refer to Figure 9 The second portion 62 is provided with a first window 621 . The first window 621 is used to expose a portion of the circuit board 40 . The first window 621 is filled with colloid.

[0137] The first window 621 refers to a through-hole structure provided on the second portion 62. The first window 621 extends through the thickness direction of the second portion 62. The shape of the first window 621 can be circular, square, or triangular, etc. In this embodiment, the shape of the first window 621 is square.

[0138] The first window 621 is provided in the second portion 62, exposing a portion of the circuit board 40. The first window 621 is filled with a colloid. On the one hand, the colloid covers the area of ​​the circuit board 40 exposed relative to the second portion 62, providing shielding and a certain degree of protection for the circuit board 40. On the other hand, the colloid fills the gap between the circuit board 40, the second portion 62, and the connector 50, further firmly bonding the circuit board 40, the second portion 62, and the connector 50, and improving the stability of the connection between the circuit board 40 and the connector 50.

[0139] According to some embodiments of the present application, the first bracket 60 is an insulating member.

[0140] The first bracket 60 is an insulating member. It can be made of an insulating material; or it can be made of a non-insulating material with an insulating layer provided on its surface. In the case where the first bracket 60 is made of an insulating material, it can be made of an insulating material such as plastic or plastic. Insulating materials are materials that can prevent the flow of electric current and are widely used in power transmission, electronic equipment, insulating coatings, insulating pipes, insulating panels, and other fields.

[0141] Using 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 , thereby improving the safety of the battery device 100 .

[0142] An embodiment of the present application further provides an electrical device, which includes the battery device 100 of any of the aforementioned embodiments.

[0143] The electric device provided in the embodiment of the present application has the same technical effects as the battery device 100 provided in any of the above embodiments, and thus will not be described in detail here.

[0144] An embodiment of the present application also provides an assembly method for a battery device, which is applied to the battery device 100 of any of the aforementioned embodiments, including: fixing the connector 50 to the end plate 30 through the first bracket 60; separating the first part 61 and the second part 62; and connecting the connector 50 to the battery management module 70.

[0145] Separating the first portion 61 from the second portion 62 may cause the weak portion 63 connecting the first portion 61 and the second portion 62 to break, for example, by breaking or shearing the weak portion 63 .

[0146] When assembling the connector 50, the first portion 61 and the second portion 62 are connected, and the connector 50 can be fixed to the end plate 30 via the first bracket 60. The connector 50 is firmly fixed and will not shake or vibrate during transportation. When the connector 50 is transferred to the target location and assembled with the battery management module 70, the first portion 61 and the second portion 62 are separated. This separates the connector 50 from the end plate 30, restoring the connector 50's freedom and allowing it to move relative to the end plate 30. Adjusting the position of the connector 50 facilitates quick assembly and connection of the connector 50 with the battery management module 70.

[0147] 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 arranged at one end of the battery cell group 24 along the first direction X; the circuit board 40 is at least partially arranged 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 arranged on the side of the end plate 30 away from the battery cell group 24, and the connector 50 is electrically connected to the circuit board 40; wherein, the battery device also includes a first bracket 60, 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 by 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 portion 63, through which the first portion 61 is connected to the second portion 62. When the weak portion 63 breaks, the first portion 61 is separated from the second portion 62. There are multiple weak portions 63, which are arranged at intervals.

[0148] 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, so that the connector 50 is fixed to the end plate 30 through the first bracket 60. The connector 50 is firmly fixed and will not shake or vibrate during transportation. When the battery cell group 24 and the connector 50 are 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 converted from a connected state to a separated state, so that the connector 50 is separated from the end plate 30, the connector 50 regains its freedom, and the connector 50 can move relative to the end plate 30 to adjust the position of the connector 50, so as to facilitate the rapid assembly and connection of the connector 50 with the battery management module 70, and abandon the conventional technology of using electrical tape to fix the connector 50 on the end plate 30 or the battery cell group 24. Moreover, when the connector 50 and the battery cell group 24 are transferred to be assembled with the battery management module 70, there is no need to tear off the electrical tape when assembling the connector 50 with the battery management module 70, thereby avoiding the risk of damaging the circuit board 40 during the tearing process. The weak portion 63 connects the first part 61 and the second part 62. The weak portion 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 portion 63 between the first part 61 and the second part 62, thereby quickly separating the first part 61 and the second part 62. The operation is convenient and quick, and the workload of the staff is reduced.

[0149] In some embodiments, the first portion 61 includes a first body 611 and a fixing member 612. The first body 611 is used to connect to the second portion 62. The fixing member 612 is disposed on the first body 611 and is used to connect to the end plate 30. The fixing member 612 is a plastic rivet. The first portion 61 also includes a restraining portion 613, which is connected to the first body 611 and has a through hole. The battery device 100 also includes a connector 80, which is inserted into the through hole.

[0150] The first body 611 provides support and mounting functions for the fixing member 612, allowing the fixing member 612 to be stably mounted on the first body 611. The first portion 61 is connected to the end plate 30 via the fixing member 612, thereby securing the connector 50 to the end plate 30. The fixing member 612 is a plastic rivet, which simplifies the structure. The first portion 61 is riveted to the end plate 30 via the plastic rivet. This allows the connector 50 to be stably secured to the end plate 30 during transportation, limiting displacement and improving transport stability. The plastic rivet also effectively protects the connector 50. The restraining portion 613 allows the connector 80 (e.g., copper bar, aluminum bar, or wiring harness) in the battery device 100 to pass through, bundling and retaining the connector 80, improving its overall aesthetics and ease of use. The restraining portion 613 also secures the connector 80 to one side of the end plate 30, preventing it from loosening or being damaged due to movement or vibration.

[0151] In some embodiments, one end of the circuit board 40 is sandwiched between the connector 50 and the second portion 62. A first rivet stud is provided on the side of the connector 50 facing the second portion 62. The second portion 62 is provided with a positioning hole 622 for the first rivet stud to pass through. The first rivet stud is heat-riveted to the second portion 62. The second portion 62 is provided with a first window 621, which is used to expose a portion of the circuit board 40 and is filled with colloid. The first bracket 60 is an integrally molded structure.

[0152] The second portion 62 and the connector 50 clamp one end of the circuit board 40, securing it. The second portion 62 strengthens the connection between the circuit board 40 and the connector 50, ensuring a more secure connection between the circuit board 40 and the connector 50. This enhances the integrity of the connection between the connector 50 and the circuit board 40 and prevents the connector 50 from loosening. The connector 50 is riveted to the second portion 62 via a first rivet stud, forming a single unitary connection between the connector 50 and the second portion 62. One end of the circuit board 40 is positioned between the connector 50 and the second portion 62, thereby clamping and securing the circuit board 40 and enhancing the stability of the connection between the circuit board 40 and the connector 50. The first window 621 exposes a portion of the circuit board 40. The first window 621 is filled with a colloid. The colloid covers the area of ​​the circuit board 40 exposed by the second portion 62, providing some shielding and protection. Furthermore, the colloid fills the gap between the circuit board 40, the second portion 62, and the connector 50, further securing the connection and improving the stability of the connection between the circuit board 40 and the connector 50. The first bracket 60 is an integrally formed structure, which improves the integrity and structural strength of the first bracket 60, and can more firmly fix the connector 50 when the connector 50 is transported. In addition, the first bracket 60 can be produced in one go, making it more convenient to manufacture.

[0153] In some embodiments, the manufacturing method includes: fixing the connector 50 to the end plate 30 via the first bracket 60 ; breaking the weak portion 63 connecting the first portion 61 and the second portion 62 ; and connecting the connector 50 to the battery management module 70 .

[0154] When assembling the connector 50, the first part 61 and the second part 62 are connected, and the connector 50 can be fixed to the end plate 30 through the first bracket 60. The connector 50 is firmly fixed and will not shake or vibrate during transportation. When the connector 50 is transferred to the target position and assembled 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. The connector 50 can move relative to the end plate 30, and the position of the connector 50 can be adjusted to facilitate 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 operator to operate. The weak part 63 only needs to bend with a little force, which reduces the workload and improves the assembly efficiency of the battery device 100.

[0155] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions 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; a first bracket comprising a first portion and a second portion, wherein the first portion is connected to the end plate, and the second portion is connected to the connector; the first portion and the second portion have a connected state and a disconnected state, wherein in the connected state, the connector is fixed to the end plate via the first bracket, and the connector is disconnected from the battery management module; and in the disconnected state, the connector is electrically connected to the battery management module; 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.

2. The battery device according to claim 1, wherein: There are multiple weak parts, and the multiple weak parts are arranged at intervals.

3. The battery device according to claim 1, wherein: The first bracket is an integrally formed structure.

4. The battery device according to claim 1, wherein: 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.

5. The battery device according to claim 4, characterized in that The fixing piece is a rivet.

6. The battery device according to claim 4, 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.

7. The battery device according to claim 1, wherein: One end of the circuit board is sandwiched between the connector and the second portion.

8. The battery device according to claim 7, 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.

9. The battery device according to claim 8, 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.

10. The battery device according to claim 1, wherein: The first bracket is an insulating member.

11. An electrical device, characterized in that: A battery device comprising the battery device according to any one of claims 1 to 10.

12. A method for assembling a battery device, applied to the battery device according to any one of claims 1 to 10, 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.

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