Battery device and electric appliance

Abstract

This application relates to the field of battery device technology, specifically to a battery device and an electrical appliance. The battery device of this application includes at least one battery cell and a distribution box electrically connected to the battery cell. The distribution box includes a support frame, a circuit board, a conductive connector, and at least one relay. The circuit board and the at least one relay are disposed on the support frame. The relay includes a first side and a second side. The first side is used to receive signals from the circuit board, and the second side is electrically connected to the battery cell. The first side is electrically connected to the circuit board via the conductive connector. The conductive connector has a connection terminal at one end facing the circuit board, which is inserted into and electrically connected to the circuit board. According to the battery device of this application, the first side of the relay can be easily electrically connected to the circuit board at different locations via the conductive connector, facilitating the adjustment of the circuit board's position. Furthermore, the connection between the conductive connector and the circuit board via the connection terminal facilitates stable transmission of electrical signals.

Description

Technical Field

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

[0002] With the development of technology, electric vehicles and other electrical equipment are becoming increasingly popular. In the battery system of electrical equipment, the battery distribution box is generally equipped with relays and circuit boards. The circuit board is fixed on the low-voltage side of the relay and plugs into it, which restricts the installation position of the circuit board and makes it inconvenient to adjust its position. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the purpose of this application is to provide a battery device and electrical equipment that can effectively solve the problem of inconvenient adjustment of the installation position of the circuit board in the power distribution box.

[0004] In a first aspect, this application provides a battery device, including at least one battery cell and a power distribution box electrically connected to the battery cell, the power distribution box comprising:

[0005] Supporting framework;

[0006] The circuit board is mounted on the supporting frame.

[0007] At least one relay is provided on the support frame. The relay includes a first side and a second side. The first side is used to receive signals from the circuit board, and the second side is electrically connected to a battery cell.

[0008] The conductive connector has a first side that is electrically connected to the circuit board. The end of the conductive connector facing the circuit board has a connection terminal, which is inserted into the circuit board and electrically connected to the circuit board.

[0009] According to the battery device of this application, the relay and the circuit board are electrically connected through a conductive connector. When it is necessary to adjust the installation position of the circuit board, the position of the connection terminal can be adjusted accordingly, so that the first side of the relay can be electrically connected to the circuit board at different positions through the conductive connector, which facilitates the adjustment of the position of the circuit board. Furthermore, the conductive connector and the circuit board are connected by a connection terminal, which is easy to install and conducive to stable transmission of electrical signals.

[0010] In some embodiments of this application, at least one relay includes a plurality of relays, and the first sides of at least two of the plurality of relays are electrically connected to the circuit board via the same conductive connector.

[0011] By electrically connecting the first side of at least two relays to the circuit board via the same conductive connector, the number of conductive connectors can be reduced, thereby improving the space utilization inside the distribution box.

[0012] In some embodiments of this application, the plurality of relays includes at least two relays arranged along a first direction, and the first sides of two adjacent relays arranged along the first direction are disposed opposite each other and are electrically connected to the circuit board through the same conductive connector. The circuit board is disposed on the same side of the plurality of relays along a second direction, and the first direction and the second direction intersect.

[0013] By arranging the first sides of two adjacent relays arranged along the first direction opposite each other, and placing the circuit board along the second direction on the same side of the multiple relays, two adjacent relays can be connected to the circuit board along the second direction through the same conductive connector, thereby reducing the conduction path between the two adjacent relays and the circuit board, that is, reducing the size of the conductive connector, reducing costs, and improving the response speed of the circuit.

[0014] In some embodiments of this application, the plurality of relays includes at least a first relay and a second relay arranged along a first direction, with the first side of the first relay and the first side of the second relay disposed opposite to each other along the first direction, and electrically connected to the circuit board via the same conductive connector.

[0015] By connecting the first side of the first relay and the first side of the second relay to the circuit board through the same conductive connector, the number of conductive connectors can be reduced, thereby improving the space utilization rate inside the distribution box.

[0016] In some embodiments of this application, the plurality of relays includes at least a first relay, a second relay, a third relay, and a fourth relay arranged sequentially along a first direction, wherein the first side of the first relay and the first side of the second relay are disposed opposite to each other along the first direction, the first side of the third relay and the first side of the fourth relay are disposed opposite to each other along the first direction, and the conductive connector includes a first branch and a second branch that are electrically connected to the connection terminal respectively, the first side of the first relay and the first side of the second relay are electrically connected to the first branch respectively, and the first side of the third relay and the first side of the fourth relay are electrically connected to the second branch respectively.

[0017] By electrically connecting the first side of the first relay and the first side of the second relay to the first branch respectively, and electrically connecting the first side of the third relay and the first side of the fourth relay to the second branch respectively, and electrically connecting the first branch and the second branch to the connection terminal respectively, it is possible to simultaneously realize the electrical connection between the four relays and the circuit board through the same conductive connector, thereby reducing the number of conductive connectors and improving the space utilization inside the distribution box.

[0018] In some embodiments of this application, the second side and the first side are respectively disposed on opposite sides of the relay along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0019] By placing the second side and the first side on opposite sides of the relay along a third direction, and placing the circuit board on one side of multiple relays along a second direction, it is possible to reduce the number of times the second side and the circuit board are placed on the same side of the relay, thereby reducing the impact or damage of the second side on the circuit board.

[0020] In some embodiments of this application, the conductive connector includes a conductive busbar, and a first side is electrically connected to a connection terminal via the conductive busbar.

[0021] By connecting the connecting terminal and the first side through the conductive busbar, the current carrying capacity of the conductive connector can be improved, the current distribution is more uniform, and the reliability of current conduction is improved.

[0022] In some embodiments of this application, the conductive connector is further provided with a protective member, which covers the outer surface of the conductive busbar.

[0023] By covering the outer surface of the busbar with protective components, the electrical connection between the busbar and other conductive components can be reduced, thereby reducing the risk of short circuits.

[0024] In some embodiments of this application, the protective component is encapsulated on the outer surface of the conductive busbar by injection molding.

[0025] By using injection molding to cover the outer surface of the conductive busbar, the protective component is made easier to form the conductive connector, and the connection reliability between the protective component and the conductive busbar is improved, reducing the risk of the protective component falling off.

[0026] In some embodiments of this application, the conductive busbar is provided with a positioning hole, which is used to insert the positioning member during the process of injection molding the protective member onto the outer surface of the conductive busbar.

[0027] By setting positioning holes, positioning components can be inserted into the positioning holes during the injection molding process of the protective component onto the outer surface of the conductive busbar, thereby fixing the position of the conductive busbar, reducing the displacement of the conductive busbar during the injection molding process, and improving the connection reliability between the conductive busbar and the protective component.

[0028] In some embodiments of this application, a coil lead-out structure is provided on the first side, a coil is provided inside the relay, at least part of the coil lead-out structure is provided outside the relay, and the coil is electrically connected to the conductive connector through the coil lead-out structure.

[0029] By placing the coil lead-out structure on the outside of the relay, it is convenient to electrically connect the coil and conductive connector through the coil lead-out structure.

[0030] In some embodiments of this application, the coil lead-out structure includes a first connecting piece and a second connecting piece. One of the first connecting piece and the second connecting piece is electrically connected to the positive terminal of the coil, and the other is electrically connected to the negative terminal of the coil. The connecting terminals include a first connecting terminal and a second connecting terminal. The first connecting piece is electrically connected to the first connecting terminal, and the second connecting piece is electrically connected to the second connecting terminal. The first connecting terminal and the second connecting terminal are respectively inserted into the circuit board and electrically connected to the circuit board.

[0031] By electrically connecting the first connecting piece to the first connecting terminal, the first connecting piece can be electrically connected to the circuit board through the first terminal. By electrically connecting the second connecting piece to the second connecting terminal, the second connecting piece can be electrically connected to the circuit board through the second terminal. Thus, the circuit board sends control signals to the first connecting piece and the second connecting piece respectively, thereby controlling the energization of the coil.

[0032] In some embodiments of this application, a mounting cavity is formed inside the support frame, the relay is disposed inside the mounting cavity, the circuit board is disposed outside the support frame, and the conductive connector passes through the support frame and is inserted into the circuit board.

[0033] By placing the relay inside the support frame and the circuit board outside the support frame, the risk of the relay coming into contact with the circuit board and short-circuiting can be reduced.

[0034] In some embodiments of this application, a baffle is formed on at least one side of the support frame, and the relay and circuit board are respectively disposed on opposite sides of the baffle.

[0035] By placing the relay and circuit board on opposite sides of the baffle, the baffle can effectively reduce the possibility of the relay coming into contact with the circuit board and short-circuiting. At the same time, the baffle can also reduce the impact or damage of the electrical signals emitted by the relay on the circuit board.

[0036] In some embodiments of this application, the edge of the baffle is formed with a first clearance structure, and the conductive connector passes through the first clearance structure and is inserted into the circuit board.

[0037] By passing the conductive connector through the first clearance structure, it is easier for the conductive connector to be inserted into the circuit board, and the size of the conductive connector can be reduced.

[0038] In some embodiments of this application, the power distribution box further includes a pre-charge module, which is disposed on the side of the circuit board facing the relay. The pre-charge module is plugged into and electrically connected to the circuit board, and the baffle forms a second clearance structure for accommodating at least part of the pre-charge module.

[0039] By placing the pre-charge module within the second clearance structure of the baffle, the installation between the circuit board and the support frame is facilitated, and the maximum gap between the circuit board and the baffle can be reduced.

[0040] Secondly, this application proposes an electrical device having a battery device as described above.

[0041] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0043] Figure 1 This is a structural schematic diagram of a vehicle provided in one embodiment of this application;

[0044] Figure 2 This is a schematic diagram of the structure of a battery device provided in one embodiment of this application;

[0045] Figure 3 This is a schematic diagram of the structure of a battery cell assembly provided in one embodiment of this application;

[0046] Figure 4 This is an exploded structural diagram of a battery cell provided in one embodiment of this application;

[0047] Figure 5 This is a partial structural schematic diagram of the power distribution box provided in one embodiment of this application;

[0048] Figure 6 yes Figure 5 A schematic diagram of the structure after the conductive plate and supporting frame are separated.

[0049] Figure 7 yes Figure 6 A schematic diagram of the structure in which the conductive plate faces the relay side;

[0050] Figure 8 yes Figure 7 A magnified structural diagram of part A in the diagram;

[0051] Figure 9 yes Figure 5 A schematic diagram of the connection structure between the first and second relays in the diagram;

[0052] Figure 10 yes Figure 9A schematic diagram of the connection structure between the first and second relays from another angle;

[0053] Figure 11 This is a partial structural schematic diagram of a power distribution box provided in another embodiment of this application.

[0054] The reference numerals in the detailed embodiments are as follows:

[0055] 1. Vehicles;

[0056] 10. Battery assembly; 11. Controller; 12. Motor;

[0057] 20. Battery cell assembly; 21. Battery cell; 211. End cap; 212. Housing; 213. Electrode assembly; 214. Electrode terminal;

[0058] 30. Box; 301. First box; 302. Second box;

[0059] 40. Distribution box;

[0060] 41. Support frame; 411. Baffle; 412. Fixing bolt; 413. Mounting column; 414. First clearance structure; 415. Second clearance structure; 4151. First recess; 4152. Second recess;

[0061] 42. Relay; 421. First relay; 4211. First side; 4212. Coil lead-out structure; 4213. First connecting piece; 4214. Second connecting piece; 4215. Second side; 4216. Stationary contact; 4217. Marking part; 422. Second relay; 423. Third relay; 424. Fourth relay;

[0062] 43. Circuit board; 431. Plug-in hole; 432. Mounting hole; 433. Mounting hole; 434. Precharge module; 4341. Precharge resistor; 4342. Precharge relay;

[0063] 44. Conductive connector; 441. Connecting terminal; 442. First connecting terminal; 443. Second connecting terminal; 444. Conductive busbar; 445. Protective component; 446. Positioning hole; 447. First branch; 448. Second branch; 449. Connecting part;

[0064] X, the first direction; Y, the second direction. Detailed Implementation

[0065] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0066] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application shall have the ordinary meaning as understood by those skilled in the art to which the embodiments of this application pertain.

[0067] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0068] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of embodiments of this application, "a plurality of" means including two or more, unless otherwise explicitly defined.

[0069] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0070] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. Lithium-ion batteries, due to their high energy density, high average open-circuit voltage, and long cycle life, are widely used in mobile and portable electronic devices.

[0072] With the development of technology, electric vehicles and other electrical equipment are becoming increasingly popular. In the battery system of electrical equipment, the battery distribution box is generally equipped with a relay and a circuit board. The circuit board is fixed on the first side of the relay and plugs into it, which restricts the installation position of the circuit board and makes it inconvenient to adjust its position.

[0073] To address the problem of inconvenient adjustment of the installation position of circuit boards within a distribution box, this application proposes a battery device and an electrical appliance incorporating the battery device. According to the battery device of this application, the first side of the relay can be electrically connected to circuit boards at different locations via conductive connectors, facilitating circuit board position adjustment. Furthermore, the conductive connectors and circuit boards are connected via connector terminals, simplifying installation and promoting stable signal transmission.

[0074] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0075] In some implementations, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0076] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0077] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0078] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0079] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0080] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0081] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0082] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0083] In some embodiments, the energy storage device includes one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery modules connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0084] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application can be any power system that requires energy storage devices.

[0085] The technical solutions described in this application are applicable to various electrical devices and energy storage devices that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, spacecraft and energy storage containers, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0086] Figure 1 This is a structural schematic diagram of vehicle 1 provided for some embodiments of this application. For example... Figure 1As shown, vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 10 is installed inside vehicle 1, and the battery device 10 can be located at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1; for example, the battery device 10 can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 11 and a motor 12. The controller 11 is used to control the battery device 10 to supply power to the motor 12, for example, to meet the power needs of vehicle 1 during starting, navigation, and driving.

[0087] In some embodiments of this application, the battery device 10 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0088] Figure 2 This is a schematic diagram of the structure of a battery device 10 according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of a battery cell assembly 20 according to one embodiment of this application. (In conjunction with...) Figure 2 and Figure 3 As shown, to meet different power demands, the battery device 10 may include multiple battery cells 21, where each battery cell 21 is the smallest unit constituting the battery device 10. Multiple battery cells 21 can be connected in series and / or in parallel via electrode terminals for various applications. Furthermore, the multiple battery cells 21 can be connected in series, in parallel, or in a mixed configuration, where a mixed configuration refers to a combination of series and parallel connections.

[0089] Combination Figure 2 and Figure 3 As shown, the battery device 10 may include multiple battery cell assemblies 20 and a housing 30, with the multiple battery cell assemblies 20 housed inside the housing 30. The housing 30 is used to house the battery cells 21 or battery cell assemblies 20 to reduce the impact of liquids or other foreign objects on the charging or discharging of the battery cells 21. The housing 30 may be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres. The material of the housing 30 may be an alloy material such as aluminum alloy or iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0090] In some embodiments, the housing 30 may include a first housing 301 and a second housing 302, which overlap each other, and together define a space for accommodating the battery cell 21. The second housing 302 may be a hollow structure with one end open, and the first housing 301 may be a plate-like structure, with the first housing 301 covering the open side of the second housing 302 so that the first housing 301 and the second housing 302 together define a space for accommodating the battery cell 21; alternatively, the first housing 301 and the second housing 302 may both be hollow structures with one side open, with the open side of the first housing 301 covering the open side of the second housing 302.

[0091] The battery cell assembly 20 may include multiple battery cells 21. These battery cells 21 may be connected in series, parallel, or a combination thereof to form the battery cell assembly 20. The multiple battery cell assemblies 20 may then be connected in series, parallel, or a combination thereof to form the battery device 10. The battery cell 21 may be cylindrical, flat, cuboid, or other shapes, and this application does not limit this. Battery cells 21 are generally classified into three types according to their packaging method: cylindrical battery cells, cuboid battery cells, and pouch battery cells, and this application does not limit this either. However, for the sake of brevity, the following embodiments will use a cuboid lithium-ion battery cell 21 as an example for explanation.

[0092] Figure 4 This is an exploded structural diagram of a battery cell 21 provided for some embodiments of this application. The battery cell 21 refers to the smallest unit constituting the battery device 10. For example... Figure 4 The battery cell 21 includes an end cap 211, a housing 212, and an electrode assembly 213.

[0093] End cap 211 refers to a component that covers the opening of housing 212 to isolate the internal environment of battery cell 21 from the external environment. The shape of end cap 211 can be adapted to the shape of housing 212 to fit it. Optionally, end cap 211 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 211 is not easily deformed under pressure and impact, giving battery cell 21 higher structural strength and improved safety performance. Functional components such as electrode terminals 214 can be provided on end cap 211. Electrode terminals 214 can be used for electrical connection with electrode assembly 213 to output or input electrical energy to battery cell 21. In some embodiments, end cap 211 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 21 reaches a threshold. In some embodiments, an insulating element may be provided on the inner side of the end cap 211. The insulating element can be used to isolate the electrical connection components inside the housing 212 from the end cap 211 to reduce the risk of short circuit. For example, the insulating element may be made of plastic, rubber, etc.

[0094] The housing 212 is a component used to cooperate with the end cap 211 to form the internal environment of the battery cell 21. This internal environment can accommodate the electrode assembly 213, electrolyte (not shown in the figure), and other components. The housing 212 and the end cap 211 can be independent components. An opening can be provided on the housing 212, and the end cap 211 can be used to close the opening to form the internal environment of the battery cell 21. Alternatively, the end cap 211 and the housing 212 can be integrated. Specifically, the end cap 211 and the housing 212 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 212, the end cap 211 closes the housing 212. The housing 212 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 212 can be determined according to the specific shape and size of the electrode assembly 213. The housing 212 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0095] Electrode assembly 213 is the component in the battery cell 21 where the electrochemical reaction occurs. The casing 212 may contain one or more electrode assemblies 213. Electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of electrode assembly 213, while the portions of the positive and negative electrode sheets without active material each constitute a tab (not shown in the figure). The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 214 to form a current loop.

[0096] Combination Figure 2 , Figures 5 to 10 As shown, in some embodiments of this application, the battery device 10 includes at least one battery cell 21 and a power distribution box 40 electrically connected to the battery cell 21. The power distribution box 40 includes a support frame 41, a circuit board 43, a conductive connector 44, and at least one relay 42. The circuit board 43 is disposed on the support frame 41, and at least one relay 42 is disposed on the support frame 41. The relay 42 includes a first side 4211 and a second side 4215. The first side 4211 is used to receive signals from the circuit board 43, and the second side 4215 is electrically connected to the battery cell 21. The first side 4211 is electrically connected to the circuit board 43 through the conductive connector 44. The conductive connector 44 has a connection terminal 441 at one end facing the circuit board 43. The connection terminal 441 is inserted into the circuit board 43 and electrically connected to the circuit board 43.

[0097] Specifically, there can be multiple battery cells 21, which together form a battery cell assembly 20 and are electrically connected to a relay 42 via at least one battery cell 21, thereby increasing the output voltage or output current of the battery device 10.

[0098] The power distribution box 40 is mainly used to control and distribute power to various electrical components of the vehicle, including external electrical appliances such as ECU (Electronic Control Unit), headlights, ABS (Anti-lock Braking System), etc. The power distribution box 40 can be located inside the housing 30. The second side 4215 is provided with a stationary contact 4216. The stationary contact 4216 can be directly connected to the battery cell 21 through a conductive element, such as a conductive pad. Alternatively, the stationary contact 4216 can be electrically connected to the battery cell 21 through a fuse.

[0099] The support frame 41 forms the overall support structure of the distribution box 40, and can be a frame structure or a box structure. The support frame 41 can be additionally covered with a shell, so that the support frame 41, relay 42, circuit board 43 and conductive connector 44 are all housed inside the shell, reducing the possibility of short circuits in the distribution box 40 due to accidental contact with other conductive components.

[0100] The relay 42 can be one or more, and the relay 42 is connected to the support frame 41, including direct connection or connection via a connector. The relay 42 includes a first side 4211 and a second side 4215, wherein the first side 4211 is used for electrical connection with a control signal, and the second side 4215 is used for conducting the battery cell 21 and the electrical device. By controlling the input / output signals of the first side 4211, the conductive connection between the battery cell 21 and the electrical device can be controlled via the second side 4215. Optionally, the first side 4211 can be the low-voltage side of the relay 42, and the second side 4215 can be the high-voltage side of the relay 42.

[0101] The number of circuit boards 43 can be one or more, and the circuit boards 43 are connected to the support frame 41, including direct connection or connection via connectors. Depending on the number of relays 42, multiple relays 42 can be electrically connected to the same circuit board 43, or multiple relays 42 can be connected to multiple circuit boards 43 in a one-to-one correspondence. Optionally, the circuit board 43 is a PCB (Printed Circuit Board). Optionally, the circuit board 43 can also be an FPC (Flexible Printed Circuit) board or a ceramic circuit board, etc. For ease of description, this application only uses a PCB board as an example for the circuit board 43.

[0102] The conductive connector 44 is used to connect the first side 4211 and the circuit board 43. One end of the conductive connector 44 facing the circuit board 43 has a connection terminal 441, and the interior of the conductive connector 44 forms a conductive line electrically connected to the connection terminal 441. The connection terminal 441 can be inserted into the circuit board 43, thereby connecting the first side 4211 and the circuit board 43 through the conductive connector 44. Optionally, the circuit board 43 has a insertion hole 431, and the connection terminal 441 can be a pin structure, which can be inserted into the insertion hole 431 and electrically connected to the circuit board 43. Optionally, to improve the connection strength between the connection terminal 441 and the circuit board 43, after the connection terminal 441 is inserted into the insertion hole 431, the edge of the connection terminal 441 can be soldered to the edge of the insertion hole 431, thereby soldering the connection terminal 441 to the circuit board 43. Optionally, the conductive connector 44 has a generally plate-like structure, which facilitates insertion and reduces circuit tangle.

[0103] According to the battery device 10 of this application, the relay 42 and the circuit board 43 are electrically connected through a conductive connector 44. When it is necessary to adjust the installation position of the circuit board 43, the position of the connection terminal 441 can be adjusted accordingly, so that the first side 4211 of the relay 42 can be electrically connected to the circuit board 43 at different positions through the conductive connector 44, which facilitates the adjustment of the position of the circuit board 43. The conductive connector 44 and the circuit board 43 are connected by the connection terminal 441, which is easy to install and conducive to stable transmission of electrical signals.

[0104] Combination Figures 5 to 10 As shown, in some embodiments of this application, at least one relay 42 includes a plurality of relays 42, and the first sides 4211 of at least two of the plurality of relays 42 are electrically connected to the circuit board 43 via the same conductive connector 44.

[0105] Specifically, the plurality of relays 42 includes at least two relays, wherein the first side 4211 of the two relays 42 is electrically connected to the same conductive connector 44, and the conductive connector 44 is plugged into the circuit board 43 for conduction, and at least two relays 42 and the circuit board 43 are connected simultaneously through the same conductive connector 44.

[0106] By electrically connecting the first side 4211 of at least two relays 42 to the circuit board 43 through the same conductive connector 44, the number of conductive connectors 44 can be reduced, thereby improving the space utilization inside the distribution box 40.

[0107] Combination Figures 5 to 10As shown, in some embodiments of this application, the plurality of relays 42 includes at least two relays 42 arranged along a first direction X, and the first sides 4211 of two adjacent relays 42 arranged along the first direction X are disposed opposite each other and are electrically connected to the circuit board 43 through the same conductive connector 44. The circuit board 43 is disposed on the same side of the plurality of relays 42 along a second direction Y, and the first direction X and the second direction Y intersect.

[0108] Specifically, at least two relays 42 are arranged along the first direction X and electrically connected to the circuit board 43 via the same conductive connector 44. To facilitate the electrical connection of the two relays 42 to the same conductive connector 44, the first sides 4211 of the two relays 42 are arranged opposite each other along the first direction X, and at least part of the conductive connector 44 is located between the two relays 42 along the first direction X, thereby reducing the conduction path between the first side 4211 and the conductive connector 44 and improving the response speed of the control signal. To facilitate the insertion of the conductive connector 44 into the circuit board 43 and reduce interference between the circuit board 43 and the relays 42, the circuit board 43 is located on the same side of the multiple relays 42 along the second direction Y, and the first direction X and the second direction Y intersect. Optionally, the first direction X can be the same as the length direction of the circuit board 43, so that at least two relays 42 are within the length range of the circuit board 43 along the first direction X, facilitating the insertion of the conductive connector 44 into the circuit board 43. Optionally, the first direction X is perpendicular to the second direction Y. The second direction Y can be the thickness direction of the board surface of the circuit board 43, so that the board surface of the circuit board 43 is perpendicular to the second direction Y, which facilitates the connection terminal 441 to be inserted into the circuit board 43 along the second direction Y.

[0109] By arranging the first sides 4211 of two adjacent relays 42 arranged along the first direction X opposite each other, and placing the circuit board 43 along the second direction Y on the same side of the multiple relays 42, two adjacent relays 42 can be connected to the circuit board 43 along the second direction Y through the same conductive connector 44. This reduces the conduction path between the two adjacent relays 42 and the circuit board 43 respectively, thereby reducing the size of the conductive connector 44, reducing costs, and improving the response speed of the circuit.

[0110] Combination Figures 5 to 10 As shown, in some embodiments of this application, the plurality of relays 42 include at least a first relay 421 and a second relay 422 arranged along the first direction X. The first side 4211 of the first relay 421 and the first side 4211 of the second relay 422 are arranged opposite to each other along the first direction X and are electrically connected to the circuit board 43 through the same conductive connector 44.

[0111] For ease of description, the embodiments of this application are described using only the structure of the first relay 421 as an example. Other relays, such as the second relay 422, can have the same structure as the first relay 421.

[0112] Specifically, the first side 4211 of the first relay 421 is located on the side facing the second relay 422, and the first side 4211 of the second relay 422 is located on the side facing the first relay 421, so that the first sides 4211 of the two relays are arranged opposite to each other. A conductive connector 44 is provided between the first relay 421 and the second relay 422, and the first side 4211 of the first relay 421 and the first side 4211 of the second relay 422 are respectively electrically connected to the circuit board 43 through the same conductive connector 44.

[0113] By electrically connecting the first side 4211 of the first relay 421 and the first side 4211 of the second relay 422 to the circuit board 43 through the same conductive connector 44, the number of conductive connectors 44 can be reduced, thereby improving the space utilization rate inside the distribution box 40.

[0114] Optionally, the plurality of relays 42 may also include a third relay 423 and a fourth relay 424, wherein the first side 4211 of the third relay 423 is disposed on the side facing the fourth relay 424, and the first side 4211 of the fourth relay 424 is disposed on the side facing the third relay 423, so that the first sides 4211 of the two are arranged opposite to each other. Another conductive connector 44 is provided between the third relay 423 and the fourth relay 424, and the first side 4211 of the third relay 423 and the first side 4211 of the fourth relay 424 are respectively electrically connected to the circuit board 43 through the other conductive connector 44.

[0115] Combination Figures 7 to 11 As shown, in some embodiments of this application, the plurality of relays 42 include at least a first relay 421, a second relay 422, a third relay 423, and a fourth relay 424 arranged sequentially along a first direction X. The first side 4211 of the first relay 421 and the first side 4211 of the second relay 422 are disposed opposite to each other along the first direction X. The first side 4211 of the third relay 423 and the first side 4211 of the fourth relay 424 are disposed opposite to each other along the first direction X. The conductive connector 44 includes a first branch 447 and a second branch 448 that are electrically connected to the connection terminal 441 respectively. The first side 4211 of the first relay 421 and the first side 4211 of the second relay 422 are electrically connected to the first branch 447 respectively. The first side 4211 of the third relay 423 and the first side 4211 of the fourth relay 424 are electrically connected to the second branch 448 respectively.

[0116] Specifically, the first relay 421, the second relay 422, the third relay 423, and the fourth relay 424 are arranged sequentially along the first direction X. The conductive connector 44 includes a first branch 447 and a second branch 448 that are electrically connected to the connecting terminal 441. The first branch 447 is located between the first relay 421 and the second relay 422, and is electrically connected to the first side 4211 of the first relay 421 and the first side 4211 of the second relay 422. The second branch 448 is located between the third relay 423 and the fourth relay 424, and is electrically connected to the first side 4211 of both the third relay 423 and the fourth relay 424. Optionally, the conductive connector 44 further includes a connecting portion 449, which is disposed between the relay 42 and the circuit board 43 along the second direction Y. A connecting terminal 441 is provided on the side of the connecting portion 449 facing the circuit board 43 along the second direction Y. A first branch 447 and a second branch 448 are respectively disposed along the second direction Y on the side of the connecting portion 449 away from the connecting terminal 441. The first branch 447 and the second branch 448 are electrically connected to the connecting terminal via the connecting portion. Optionally, the first branch 447, the second branch 448, and the connecting portion 449 are generally plate-shaped structures, with the connecting portion 449 extending along the first direction X, and the first branch 447 and the second branch 448 extending along the second direction Y, thereby facilitating the connection of the connecting portion 449 to the first branch 447 and the second branch 448 respectively.

[0117] By electrically connecting the first side 4211 of the first relay 421 and the first side 4211 of the second relay 422 to the first branch 447 respectively, and electrically connecting the first side 4211 of the third relay 423 and the first side 4211 of the fourth relay 424 to the second branch 448 respectively, and electrically connecting the first branch 447 and the second branch 448 to the connection terminal 441 respectively, the electrical connection between the four relays 42 and the circuit board 43 can be realized simultaneously through the same conductive connector 44, thereby reducing the number of conductive connectors 44 and improving the space utilization rate inside the distribution box 40.

[0118] Combination Figures 5 to 10 As shown, in some embodiments of this application, the second side 4215 and the first side 4211 are respectively disposed on opposite sides of the relay 42 along a third direction, with the first direction X, the second direction Y and the third direction being perpendicular to each other.

[0119] Specifically, the circuit board 43 is disposed on the same side of multiple relays 42 along the second direction Y, and the second side 4215 and the first side 4211 of the same relay 42 are disposed on opposite sides of the relay 42 along the third direction, so that the second side 4215 and the circuit board 43 are disposed on different sides of the relay 42, thereby reducing the impact or damage of the second side 4215 on the circuit board 43.

[0120] Meanwhile, since at least two relays 42 are arranged along the first direction X, the second side 4215 and the first side 4211 of the same relay 42 are respectively arranged on opposite sides of the relay 42 along the third direction. This makes it convenient to arrange the second side 4215 of at least two relays 42 on the same side along the second direction Y, thereby facilitating the electrical connection of the second side 4215 of different relays 42 with the battery cell 21 or other electrical devices along the same side.

[0121] Combination Figures 5 to 10 As shown, in some embodiments of this application, the conductive connector 44 includes a conductive busbar 444, and the first side 4211 is electrically connected to the connection terminal 441 through the conductive busbar 444.

[0122] Specifically, a conductive busbar 444 is formed inside the conductive connector 444. The conductive busbar 444 forms a conductive line for connecting the connecting terminal 441 and the first side 4211. The end of the conductive busbar 444 facing the circuit board 43 is processed to form the connecting terminal 441. Alternatively, the connecting terminal 441 can be formed separately and then soldered or snapped onto the end of the conductive busbar 444. Optionally, the conductive busbar 444 can be a copper busbar, an aluminum busbar, or other metal conductive busbars.

[0123] By connecting the connecting terminal 441 and the first side 4211 through the conductive bus 444, the current carrying capacity of the conductive connector 44 can be improved, the current distribution is more uniform, and the reliability of current conduction is improved.

[0124] Combination Figures 5 to 10 As shown, in some embodiments of this application, the conductive connector 44 is further provided with a protective member 445, which covers the outer surface of the conductive busbar 444.

[0125] Specifically, the protective component 445 can be an insulating component and covers the entire outer surface of the conductive busbar 444. Optionally, the protective component 445 can be an insulating material such as polyester film or polytetrafluoroethylene film.

[0126] By covering the outer surface of the conductive busbar 444 with the protective element 445, the electrical connection between the conductive busbar 444 and other conductive elements can be reduced, thereby reducing the risk of short circuits.

[0127] Combination Figures 5 to 10 As shown, in some embodiments of this application, the protective element 445 is coated on the outer surface of the conductive busbar 444 by injection molding.

[0128] Specifically, the protective component 445 is injection molded onto the outer surface of the conductive busbar 444. In other embodiments of this application, the protective component 445 can also be manufactured separately and then fitted onto the outside of the conductive busbar 444.

[0129] The protective component 445 is encapsulated on the outer surface of the conductive busbar 444 by injection molding, which facilitates the molding of the conductive connector 44 and improves the connection reliability between the protective component 445 and the conductive busbar 444, reducing the risk of the protective component 445 falling off.

[0130] Combination Figures 5 to 10 As shown, in some embodiments of this application, the conductive bus 444 is provided with a positioning hole 446, which is used to pass a positioning member through the protective member 445 during the injection molding process to the outer surface of the conductive bus 444.

[0131] Specifically, during the injection molding process, the conductive busbar 444 is prone to displacement under the impact of the protective component 445 during injection molding, which can lead to changes in the shape of the finished product after injection molding. Therefore, a positioning hole 446 is provided through the conductive busbar 444. During the injection molding process of the protective component 445, the positioning component is inserted through the positioning hole 446 to fix the position of the conductive busbar 444. Then, the protective component 445 is wrapped around the outer surface of the fixed conductive busbar 444 through the injection molding process.

[0132] By setting the positioning hole 446, the positioning element can be inserted into the positioning hole 446 during the process of injection molding the protective component 445 onto the outer surface of the conductive bus 444, thereby fixing the position of the conductive bus 444, reducing the displacement of the conductive bus 444 during the injection molding process, and improving the connection reliability between the conductive bus 444 and the protective component 445.

[0133] Combination Figures 5 to 10 As shown, in some embodiments of this application, the first side 4211 is provided with a coil lead-out structure 4212, the relay 42 is provided with a coil inside, at least part of the coil lead-out structure 4212 is provided outside the relay 42, and the coil is electrically connected to the conductive connector 44 through the coil lead-out structure 4212.

[0134] Specifically, at least a portion of the coil lead-out structure 4212 is located outside the relay 42 and is electrically connected to the internal coil of the relay 42. Simultaneously, the coil lead-out structure 4212 is electrically connected to the circuit board 43 via a conductive connector 44, thereby controlling the energization state of the coil. Optionally, the relay 42 also includes a magnetic circuit assembly and a moving contact on the magnetic circuit assembly. The magnetic circuit assembly can be driven when the coil is energized, thereby causing the moving contact to contact or separate from the stationary contact 4216 on the second side 4215. When the moving contact is in contact with the stationary contact 4216, the relay 42 connects the battery cell 21 and the electrical device. When the moving contact separates from the stationary contact 4216, the battery cell 21 and the electrical device are intermittently connected.

[0135] By placing the coil lead-out structure 4212 on the outside of the relay 42, it is convenient to electrically connect the coil and the conductive connector 44 through the coil lead-out structure 4212, thereby controlling the conduction state of the relay 42.

[0136] Combination Figures 5 to 10 As shown, in some embodiments of this application, the coil lead-out structure 4212 includes a first connecting piece 4213 and a second connecting piece 4214. One of the first connecting piece 4213 and the second connecting piece 4214 is electrically connected to the positive terminal of the coil, and the other is electrically connected to the negative terminal of the coil. The connecting terminal 441 includes a first connecting terminal 442 and a second connecting terminal 443. The first connecting piece 4213 is electrically connected to the first connecting terminal 442, and the second connecting piece 4214 is electrically connected to the second connecting terminal 443. The first connecting terminal 442 and the second connecting terminal 443 are respectively inserted into the circuit board 43 and electrically connected to the circuit board 43.

[0137] Specifically, the coil includes a positive terminal and a negative terminal, and the coil lead-out structure 4212 includes a first connecting piece 4213 and a second connecting piece 4214. One of the first connecting piece 4213 and the second connecting piece 4214 is connected to the positive terminal, and the other is electrically connected to the negative terminal. For ease of description, this application only uses the example of the first connecting piece 4213 being electrically connected to the positive terminal and the second connecting piece 4214 being electrically connected to the negative terminal. The connecting terminal 441 includes a first connecting terminal 442 and a second connecting terminal 443. The first connecting piece 4213 is electrically connected to the first connecting terminal 442, and the second connecting piece 4214 is electrically connected to the second connecting terminal 443. The conductive connector 44 has multiple conductive lines inside. The first connecting piece 4213 and the second connecting piece 4214 are respectively connected to their corresponding connecting terminals 441 through these conductive lines, and the conductive lines are spaced apart along the first direction Y.

[0138] Optionally, to reduce the possibility of misconnection between the coil lead-out structure 4212 and the connecting terminal 441, a marking portion 4217 is provided on the outer surface of the relay 42. The marking portion 4217 is used to mark the positions of the positive and negative terminals of the coil, that is, to mark the positions of the first connecting piece 4213 and the second connecting piece 4214. Optionally, the marking portion 4217 can be C-shaped. The opening of the C-shape faces the direction of the second connecting piece 4214, and the side of the C-shape away from the opening faces the direction of the first connecting piece 4213. Optionally, when the first relay 421 and the second relay 422 are electrically connected to the same conductive connector 44, the conductive connector 44 includes two connecting terminals 441, and each connecting terminal 441 includes a first connecting terminal 442 and a second connecting terminal 443. The first connecting terminals 442 and the second connecting terminals 443 are arranged alternately along the first direction X, and the corresponding conductive lines are arranged at intervals along the first direction X.

[0139] By electrically connecting the first connecting piece 4213 to the first connecting terminal 442, the first connecting piece 4213 can be electrically connected to the circuit board 43 through the first connecting terminal 442. By electrically connecting the second connecting piece 4214 to the second connecting terminal 443, the second connecting piece 4214 can be electrically connected to the circuit board 43 through the second connecting terminal 443. Thus, the circuit board 43 sends control signals to the first connecting piece 4213 and the second connecting piece 4214 respectively, thereby controlling the energization of the coil.

[0140] Combination Figures 5 to 10 As shown, in some embodiments of this application, a mounting cavity is formed inside the support frame 41, the relay 42 is disposed in the mounting cavity, the circuit board 43 is disposed outside the support frame 41, and the conductive connector 44 passes through the support frame 41 and is inserted into the circuit board 43.

[0141] Specifically, the relay 42 is located inside the support frame 41, and the circuit board 43 is located outside the support frame 41, thereby spacing the relay 42 and the circuit board 43 apart.

[0142] By placing the relay 42 inside the support frame 41 and the circuit board 43 outside the support frame 41, the possibility of the relay 42 and the circuit board 43 coming into contact and short-circuiting can be reduced.

[0143] Combination Figures 5 to 10 As shown, in some embodiments of this application, a baffle 411 is formed on at least one side of the support frame 41, and the relay 42 and the circuit board 43 are respectively disposed on opposite sides of the baffle 411.

[0144] Specifically, the baffle 411 has a generally plate-like structure and is used to space the relay 42 and the circuit board 43. Optionally, the support frame 41 has a baffle 411 formed on one side along the second direction Y, so that the relay 42 and the circuit board 43 are respectively disposed on opposite sides of the baffle 411 along the second direction Y.

[0145] Optionally, a fixing bolt 412 is provided on the side of the baffle 411 facing the circuit board 43, and a fixing hole 432 is provided through the circuit board 43 at the corresponding position. The fixing bolt 412 can pass through the fixing hole 432 and connect with the baffle 411, thereby fixing the circuit board 43 on the side of the baffle 411 away from the relay 42. Optionally, a mounting post 413 is provided on the side of the baffle 411 facing the circuit board 43, and a mounting hole 433 is provided through the circuit board 43 at the corresponding position. When the circuit board 43 and the baffle 411 are connected by the fixing bolt 412, the mounting post 413 can be inserted into the mounting hole 433 first, thereby pre-positioning the circuit board 43 before installation.

[0146] By placing the relay 42 and the circuit board 43 on opposite sides of the baffle 411, the baffle 411 can effectively reduce the possibility of the relay 42 and the circuit board 43 coming into contact and short-circuiting. At the same time, the baffle 411 can also reduce the impact or damage of the electrical signal emitted by the relay 42 on the circuit board 43.

[0147] Combination Figures 5 to 10 As shown, in some embodiments of this application, the edge of the baffle 411 is formed with a first clearance structure 414, and the conductive connector 44 passes through the first clearance structure 414 and is inserted into the circuit board 43.

[0148] Specifically, to reduce the obstruction of the circuit board 43 by the baffle 411, a first clearance structure 414 is formed on the edge of the baffle 411, and the conductive connector 44 passes through the first clearance structure 414 and is inserted into the circuit board 43. Optionally, the first clearance structure 414 is a notch formed on the edge of the baffle 411.

[0149] By passing the conductive connector 44 through the first clearance structure 414, it is easy for the conductive connector 44 to be inserted into the circuit board 43, and the size of the conductive connector 44 can be reduced.

[0150] Combination Figures 5 to 10 As shown, in some embodiments of this application, the power distribution box 40 further includes a pre-charge module 434, which is disposed on the side of the circuit board 43 facing the relay 42. The pre-charge module 434 is plugged into and electrically connected to the circuit board 43, and the baffle 411 is formed with a second clearance structure 415 for accommodating at least part of the pre-charge module 434.

[0151] Specifically, the precharge module 434 is used to limit the impact of the initial current on the relay 42, reducing damage to the relay 42. The precharge module 434 is located on the side of the circuit board 43 facing the relay 42, and the baffle 411 has a second clearance structure 415 for accommodating at least a portion of the precharge module 434, thereby reducing the maximum gap between the circuit board 43 and the baffle 411, and consequently reducing the overall size of the distribution box 40 along the second direction Y.

[0152] Optionally, the pre-charge module 434 includes a pre-charge resistor 4341 and a pre-charge relay 4342, which are connected in series or in parallel in the circuit. Optionally, the second clearance structure 415 includes a first recess 4151 and a second recess 4152, which are respectively formed by the baffle 411 recessed in a direction away from the circuit board 43. The first recess 4151 is used to accommodate the pre-charge resistor 4341, and the second recess 4152 is used to accommodate the pre-charge relay 4342. Optionally, the first recess 4151 and the second recess 4152 are slot-shaped structures with openings only at one end facing the circuit board 43, thereby isolating the pre-charge resistor 4341 and the pre-charge relay 4342 from the interior of the support frame 41, reducing the heat generated by the pre-charge resistor 4341 and the pre-charge relay 4342 during operation from dissipating into the interior of the support frame 41 and affecting the operation of the relay 42.

[0153] like Figure 1 As shown, a second aspect of this application provides an electrical device that includes the battery device 10 described above.

[0154] Since the electrical device in this application has the same technical features as the battery device 10 in any of the above embodiments and can achieve the same technical effect, it will not be described again here.

[0155] like Figure 1 As shown, in some embodiments of this application, the electrical device can be a vehicle 1, which includes a battery device 10 according to any of the above embodiments. The battery device 10 is used to provide electrical energy to the vehicle 1 and to drive the vehicle 1 to move.

[0156] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0157] Combination Figure 2 , Figures 5 to 10As shown, in some embodiments of this application, the battery device 10 includes at least one battery cell 21 and a power distribution box 40 electrically connected to the battery cell 21. The power distribution box 40 includes a support frame 41, a circuit board 43, a conductive connector 44, and at least one relay 42. The circuit board 43 is disposed on the support frame 41, and the relay 42 is disposed on the support frame 41. The relay 42 includes a first side 4211 and a second side 4215. The first side 4211 is used to receive signals from the circuit board 43, and the second side 4215 is electrically connected to the battery cell 21. The first side 4211 is electrically connected to the circuit board 43 through the conductive connector 44. The conductive connector 44 has a connection terminal 441 at one end facing the circuit board 43. The connection terminal 441 is inserted into the circuit board 43 and electrically connected to the circuit board 43.

[0158] Optionally, at least one relay 42 may include a plurality of relays 42, and at least two of the relays 42 have their first sides 4211 electrically connected to the circuit board 43 via the same conductive connector 44.

[0159] Optionally, the plurality of relays 42 includes at least two relays 42 arranged along the first direction X, and the first sides 4211 of two adjacent relays 42 arranged along the first direction X are arranged opposite each other and are electrically connected to the circuit board 43 through the same conductive connector 44. The circuit board 43 is located on the same side of the plurality of relays 42 along the second direction Y, and the first direction X and the second direction Y intersect.

[0160] Optionally, the second side 4215 and the first side 4211 are respectively disposed on opposite sides of the relay 42 along a third direction, with the first direction X, the second direction Y and the third direction being perpendicular to each other.

[0161] Optionally, the conductive connector 44 includes a conductive bus 444, and the first side 4211 is electrically connected to the connection terminal 441 through the conductive bus 444.

[0162] Optionally, the conductive connector 44 may also be provided with a protective component 445, which is encapsulated on the outer surface of the conductive busbar 444 by injection molding.

[0163] Optionally, the conductive bus 444 is provided with a positioning hole 446, which is used to insert the positioning member during the process of injection molding the protective member 445 onto the outer surface of the conductive bus 444.

[0164] Optionally, the first side 4211 is provided with a coil lead-out structure 4212, the relay 42 is provided with a coil inside, at least part of the coil lead-out structure 4212 is provided outside the relay 42, and the coil is electrically connected to the conductive connector 44 through the coil lead-out structure 4212.

[0165] Optionally, the coil lead-out structure 4212 includes a first connecting piece 4213 and a second connecting piece 4214. One of the first connecting piece 4213 and the second connecting piece 4214 is electrically connected to the positive terminal of the coil, and the other is electrically connected to the negative terminal of the coil. The connecting terminal 441 includes a first connecting terminal 442 and a second connecting terminal 443. The first connecting piece 4213 is electrically connected to the first connecting terminal 442, and the second connecting piece 4214 is electrically connected to the second connecting terminal 443. The first connecting terminal 442 and the second connecting terminal 443 are respectively inserted into the circuit board 43 and electrically connected to the circuit board 43.

[0166] Optionally, the support frame 41 has an internal mounting cavity, the relay 42 is located inside the mounting cavity, the circuit board 43 is located outside the support frame 41, and the conductive connector 44 passes through the support frame 41 and is inserted into the circuit board 43.

[0167] Optionally, a baffle 411 is formed on at least one side of the support frame 41, and the relay 42 and the circuit board 43 are respectively disposed on opposite sides of the baffle 411.

[0168] Optionally, the edge of the baffle 411 is formed with a first clearance structure 414, and the conductive connector 44 passes through the first clearance structure 414 and is inserted into the circuit board 43.

[0169] Optionally, the power distribution box 40 also includes a pre-charge module 434, which is located on the side of the circuit board 43 facing the relay 42. The pre-charge module 434 is plugged into and electrically connected to the circuit board 43, and the baffle 411 forms a second clearance structure 415 for accommodating at least part of the pre-charge module 434.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, It includes at least one battery cell and a power distribution box electrically connected to the battery cell, the power distribution box comprising: Supporting framework; A circuit board is disposed on the support frame; at least one relay is disposed on the support frame, the relay including a first side and a second side, the first side being used to receive signals from the circuit board, and the second side being electrically connected to the battery cell; A conductive connector is provided, wherein the first side is electrically connected to the circuit board through the conductive connector, and the conductive connector has a connection terminal at one end facing the circuit board, the connection terminal being inserted into the circuit board and electrically connected to the circuit board; The plurality of relays includes at least two relays arranged along a first direction, and the first sides of two adjacent relays arranged along the first direction are arranged opposite each other and are electrically connected to the circuit board through the same conductive connector. The circuit board is located on the same side of the plurality of relays along a second direction, and the first direction intersects the second direction.

2. The battery device according to claim 1, characterized in that, The plurality of relays includes at least a first relay, a second relay, a third relay, and a fourth relay arranged sequentially along the first direction, wherein a first side of the first relay and a first side of the second relay are disposed opposite to each other along the first direction, and a first side of the third relay and a first side of the fourth relay are disposed opposite to each other along the first direction. The conductive connector includes a first branch and a second branch that are electrically connected to the connection terminal respectively. The first side of the first relay and the first side of the second relay are respectively electrically connected to the first branch, and the first side of the third relay and the first side of the fourth relay are respectively electrically connected to the second branch.

3. The battery device according to claim 1, characterized in that, The second side and the first side are respectively located on opposite sides of the relay along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

4. The battery device according to any one of claims 1 to 3, characterized in that, The conductive connector includes a conductive busbar, and the first side is electrically connected to the connection terminal through the conductive busbar.

5. The battery device according to claim 4, characterized in that, The conductive connector is further provided with a protective component, which covers the outer surface of the conductive busbar.

6. The battery device according to claim 5, characterized in that, The protective component is encapsulated on the outer surface of the conductive busbar by injection molding.

7. The battery device according to claim 6, characterized in that, The conductive busbar is provided with a positioning hole, which is used to insert a positioning element during the process of injection molding the protective component onto the outer surface of the conductive busbar.

8. The battery device according to any one of claims 1 to 3, characterized in that, The first side is provided with a coil lead-out structure, the relay is provided with a coil inside, at least part of the coil lead-out structure is provided outside the relay, and the coil is electrically connected to the conductive connector through the coil lead-out structure.

9. The battery device according to claim 8, characterized in that, The coil lead-out structure includes a first connecting piece and a second connecting piece. One of the first connecting piece and the second connecting piece is electrically connected to the positive terminal of the coil, and the other is electrically connected to the negative terminal of the coil. The connecting terminal includes a first connecting terminal and a second connecting terminal. The first connecting piece is electrically connected to the first connecting terminal, and the second connecting piece is electrically connected to the second connecting terminal. The first connecting terminal and the second connecting terminal are respectively inserted into the circuit board and electrically connected to the circuit board.

10. The battery device according to any one of claims 1 to 3, characterized in that, The support frame has an internal mounting cavity, the relay is located inside the mounting cavity, the circuit board is located outside the support frame, and the conductive connector passes through the support frame and is inserted into the circuit board.

11. The battery device according to claim 10, characterized in that, A baffle is formed on at least one side of the support frame, and the relay and the circuit board are respectively disposed on opposite sides of the baffle.

12. The battery device according to claim 11, characterized in that, The edge of the baffle has a first clearance structure, and the conductive connector passes through the first clearance structure and is inserted into the circuit board.

13. The battery device according to claim 11, characterized in that, The power distribution box also includes a pre-charge module, which is located on the side of the circuit board facing the relay. The pre-charge module is plugged into and electrically connected to the circuit board. The baffle forms a second clearance structure for accommodating at least part of the pre-charge module.

14. An electrical appliance, characterized in that, A battery device having any one of claims 1 to 13.

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