Battery devices and electrical equipment

Abstract

This disclosure provides a battery device and an electrical device. The battery device includes: a main body to be connected; and an electrical connection assembly, including a first electrical connector (1) and a second electrical connector (2). The first electrical connector (1) is connected to the main body to be connected via a welding part (10), and the second electrical connector (2) is detachably connected to the first electrical connector (1) and achieves electrical connection in the connected state to obtain electrical signals from the main body to be connected or to perform equipotential connection between the main body to be connected. The first electrical connector (1) and the second electrical connector (2) are inserted into each other, and the extension direction of the welding part (10) is consistent with the insertion direction of the second electrical connector (2). The battery device can flexibly select the connection position of the electrical connection assembly, reduce the differentiation of the electrical connection assembly, improve the versatility and assembly efficiency of the electrical connection assembly, thereby helping to reduce production costs.

Description

Technical Field

[0001] This disclosure relates to the field of power battery technology, and in particular to a battery device and an electrical appliance. Background Technology

[0002] To achieve functions such as voltage signal acquisition and grounding protection, electrical connection components are typically installed in different locations, such as battery modules, high-voltage boxes, and battery enclosures.

[0003] Currently, these electrical connection components (such as sampling harness terminals and grounding terminals) mainly rely on bolt fastening to connect to busbars (e.g., copper busbars), sheet metal brackets, or box beams. However, this method of electrical connection has poor versatility across different application scenarios and low operational efficiency. Utility Model Content

[0004] The purpose of this disclosure is to provide a battery device and electrical equipment that improves the versatility and assembly efficiency of electrical connection components.

[0005] The first aspect of this disclosure provides a battery device, comprising:

[0006] The main body to be connected; and

[0007] An electrical connection assembly includes a first electrical connector and a second electrical connector, wherein the second electrical connector is detachably connected to the first electrical connector and achieves electrical connection in the connected state to obtain an electrical signal of the subject to be connected or to connect the subject to be connected in an equipotential manner.

[0008] The first electrical connector and the second electrical connector are inserted into each other, and the extension direction of the welded part is consistent with the insertion direction of the second electrical connector.

[0009] Based on the battery device provided in this disclosure, the electrical connection assembly of the battery device includes a first electrical connector welded and fixed to a body to be connected, and a second electrical connector that is separate from or connected to the first electrical connector, so as to realize signal acquisition or equipotential connection of the body to be connected when the first electrical connector and the second electrical connector are in a connected state. The first electrical connector can be connected to different bodies to be connected through a welding part, which is beneficial for flexibly selecting the connection position of the electrical connection assembly, reducing the differentiation of the electrical connection assembly, improving the versatility and assembly efficiency of the electrical connection assembly, thereby helping to reduce production costs.

[0010] The first and second electrical connectors are plugged into each other, allowing them to be installed and removed by plugging and unplugging. This simplifies the assembly and maintenance process, eliminates the need for additional assembly tools, and improves operational efficiency.

[0011] During the insertion and removal process, the direction of the tensile or compressive stress generated on the weld is consistent with the extension direction of the weld, which helps to reduce the shear force or bending moment on the weld, thereby reducing the risk of weld breakage and ensuring the connection reliability of the electrical connection assembly.

[0012] In some embodiments, the first electrical connector includes a main body portion and a first electrical connection portion connected to each other. The main body portion is connected to one side of the body to be connected along the thickness direction via a welding portion. The first electrical connection portion extends out of the edge of the body to be connected and is electrically connected to the second electrical connector.

[0013] The first electrical connector includes a main body and a first electrical connection portion that are interconnected. The main body is welded to the body to be connected, and the first electrical connection portion is electrically connected to a second electrical connector. This arrangement helps to spatially separate the electrical connection area and the welding area between the first electrical connection portion and the second electrical connector, thereby avoiding contamination or damage to the electrical contact surface caused by high temperatures and weld slag generated during welding, and ensuring the stability and reliability of the electrical connection. Furthermore, since the main body is connected to one side of the body to be connected along its thickness direction, it provides ample welding space, which helps to increase the length or area of ​​the welding area, improving the strength and reliability of the welded connection.

[0014] In addition, the battery has a complex internal structure and a compact space, and the installation space for electrical connection components is limited. Setting the first electrical connection part to extend out of the edge of the main body to be connected and to be electrically connected to the second electrical connection part is beneficial for flexibly selecting the installation position of the first electrical connection part, and also helps to reduce space occupation and improve structural compactness.

[0015] In some embodiments, the second electrical connector has a wiring port configured to connect a wire to the second electrical connector;

[0016] The orientation of the wiring port is set at an angle to the insertion direction of the second electrical connector.

[0017] The orientation of the wiring port is set at an angle to the insertion direction of the second electrical connector, which can guide the wire to extend in a direction at an angle to the insertion direction, thereby reducing the space occupied by the wire along the insertion direction of the second electrical connector, making the structure of the electrical connection assembly compact, and facilitating flexible selection of the installation space of the electrical connection assembly.

[0018] In some embodiments, the second electrical connector has a wiring port configured to connect a wire to the second electrical connector;

[0019] The battery device includes multiple electrical connection components, in at least two of which the wiring ports of the second electrical connection member face different directions.

[0020] By orienting the wiring ports of the second electrical connectors of at least two electrical connection components in different directions, operators can quickly identify and match the corresponding connection positions by the orientation of the wiring ports during installation or maintenance. This avoids mis-insertion or reverse connection and improves the safety and reliability of battery assembly operations.

[0021] In some embodiments, the second electrical connector includes a second electrical connection portion, and the electrical connection assembly further includes a sheath covering the second electrical connection portion.

[0022] The sheath protects the connection between the first and second electrical connectors, thus helping to prevent dust and other impurities from affecting the stability of the electrical connection.

[0023] In some embodiments, the battery device further includes:

[0024] The high-voltage box assembly includes a relay and a busbar, with the busbar electrically connected to the relay and serving as the main body to be connected;

[0025] The electrical connection component is configured to acquire electrical signals from the busbar.

[0026] As the main component to be connected, the busbar can achieve functions such as signal acquisition through electrical connection components of the same specifications. This realizes the universal design of electrical connection components, which helps to simplify the electrical connection and assembly process of the busbar with battery cells of different specifications, reduce the use of electrical connection components of different specifications, and thus help to reduce the overall production cost and maintenance difficulty of the battery module.

[0027] In some embodiments, the high-voltage box assembly includes a plurality of busbars, two of which are electrically connected to the first and second contacts of the same relay, respectively.

[0028] The two busbars connected to the same relay are respectively configured with two electrical connection components, which are used to acquire electrical signals from the busbars connected to the first contact and the second contact.

[0029] The electrical connection components can collect and transmit the voltage signals of the main positive and main negative relays to the BMU, enabling real-time monitoring and fault diagnosis of the relay contact status. For example, it can determine whether the relay is properly closed or open, and detect whether the contacts are stuck or open, thereby ensuring the safety and reliability of the high-voltage circuit.

[0030] In some embodiments, the battery device further includes:

[0031] The bracket, as the main body to be connected, is connected to the first electrical connector; and

[0032] The battery control unit has a grounding port, which is connected to a second electrical connector via a wire to connect the grounding port to the bracket at equipotential.

[0033] The electrical connection components enable an equipotential connection between the support and the BMU, ensuring no potential difference between them, avoiding signal interference, and improving the stability and reliability of the battery device.

[0034] In some embodiments, the support surface is provided with a coating that covers the area of ​​the support surface other than the first electrical connector.

[0035] Covering the area of ​​the bracket surface outside the first electrical connector with a coating helps to avoid poor welding.

[0036] In some embodiments, the battery device further includes:

[0037] The housing, as the main body to be connected, is connected to the first electrical connector;

[0038] The second electrical connector, which is connected to the first electrical connector located on the enclosure, is connected to the grounding terminal at the same potential, so that the enclosure is connected to the grounding terminal at the same potential.

[0039] The enclosure can be grounded through the electrical connection components, which can safely conduct leakage current or induced charge of the enclosure and internal high-voltage components to the ground, preventing electric shock accidents and ensuring the use of the battery device and the safety of personnel.

[0040] A second aspect of this disclosure provides an electrical device including the battery device described in the above embodiments.

[0041] The electrical equipment disclosed herein includes the embodiments described above, and thus has the advantages of the embodiments described above.

[0042] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of some embodiments of the battery device installed in a vehicle according to this application.

[0045] Figure 2 This is a schematic diagram of the structure of a battery device according to some embodiments of this application.

[0046] Figure 3 This is a schematic diagram of the structure of the battery device in some embodiments of this application, in which the bracket is mounted on the box beam and the BMU is mounted on the bracket.

[0047] Figure 4 This is a schematic diagram of the high-voltage box structure of a battery device according to some embodiments of this application.

[0048] Figure 5 This is a schematic diagram of the structure of a battery device according to some embodiments of this application, which is equipotentially connected to a support and a BMU via an electrical connection component.

[0049] Figure 6 This is a schematic diagram of the structure of the battery device BMU mounted on the box beam in some embodiments of this application.

[0050] Figure 7 This is a schematic diagram of the structure of the second electrical connector with its opening facing the first direction, according to some embodiments of this application.

[0051] Figure 8 This is a schematic diagram of the structure of the second electrical connector with its opening facing a second direction, according to some embodiments of this application.

[0052] Figure 9 This is a schematic diagram of the structure of a first electrical connector and a busbar being welded together according to some embodiments of this application.

[0053] Figure 10 This is a schematic diagram of the structure of two first electrical connectors and a busbar being welded together according to some embodiments of this application.

[0054] Figure 11 This is a schematic diagram of the connection between the second electrical connector and the wire in some embodiments of this application.

[0055] Figure 12 This is a schematic diagram of the structure of the sheath in some embodiments of this application.

[0056] The accompanying drawings are not drawn to scale.

[0057] Marker explanation:

[0058] 1. First electrical connector; 2. Second electrical connector; 3. Sheath; 6. Wire; 7. Housing; 8. Busbar; 9. Relay; 10. Welded part; 11. Main body; 12. First electrical connector; 13. Enclosure; 13A. Enclosure part; 13B. Cover part; 14. Bracket; 15. Fuse; 19. High voltage box; 20. Wiring port; 21. Second electrical connector; 30. Opening; 31. First sheath part; 32. Second sheath part; 81. First busbar; 82. Second busbar; 83. Third busbar; 211. Slot;

[0059] 100. Battery cell;

[0060] 200. Battery device;

[0061] 300. Vehicle; 301. Cabin; 302. Floor. Detailed Implementation

[0062] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0063] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0064] This application uses terms such as "upper," "lower," "top," "bottom," "front," "back," "inner," and "outer" to indicate orientation or positional relationships. This is only for the convenience of describing this application and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this application.

[0065] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" does not mean strictly vertical, but rather within the permissible range of error. "Parallel" does not mean strictly parallel, but rather within the permissible range of error. The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application.

[0066] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances.

[0067] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least some of the embodiments of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0068] A power battery typically includes a casing, battery modules, a high-voltage box, and a battery management system (BMS). The battery modules, high-voltage box, and BMS are all located inside the casing.

[0069] A battery module is composed of multiple battery cells connected in series and parallel. Battery cells may include lithium-ion rechargeable batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this application embodiment is not limited to these. Battery cells may be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to these shapes either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to these types either.

[0070] Current battery cells typically consist of a casing and an electrode assembly housed within the casing, with an electrolyte filled inside. The electrode assembly is mainly formed by stacking or winding a first electrode and a second electrode with opposite polarities, and a separator is usually provided between the first and second electrodes. The portions of the first and second electrodes coated with active material constitute the main body of the electrode assembly, while the portions of the first and second electrodes not coated with active material constitute the first tab and the second tab, respectively. In lithium-ion batteries, the first electrode can be a positive electrode, including a positive current collector and a positive electrode coating layer disposed on both sides of the positive current collector. The material of the positive current collector can be, for example, aluminum, and the positive electrode coating layer can be, for example, lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide; the second electrode can be a negative electrode, including a negative current collector and a negative electrode coating layer disposed on both sides of the negative current collector. The material of the negative current collector can be, for example, copper, and the negative electrode coating layer can be, for example, graphite or silicon. The first tab and the second tab can be located together at one end of the main body or at opposite ends of the main body. During the charging and discharging process of a single battery cell, the positive electrode coating and the negative electrode coating react with the electrolyte, and the tabs connect to the electrode leads to form a current loop.

[0071] The BMS issues commands and processes data. The high-voltage box precisely controls the on / off state of its internal relays according to the BMS's commands, and simultaneously collects data such as total voltage, total current, and insulation status in real time, feeding it back to the BMS to jointly ensure the safety of the high-voltage circuit's on / off state and power distribution. The BMS includes a Battery Management Unit (BMU), which is electrically connected to the battery module and can collect real-time data on the voltage and temperature of individual battery cells.

[0072] The high-voltage box contains relays and busbars. The relays and busbars are physically fixed and electrically connected by bolts or welding. The busbars, acting as a conductive medium, connect relays, fuses, and other components in series to form a high-voltage circuit for transmitting and distributing current. Combined with the switching action of the relays, this enables the delivery of battery power to the external load. Additionally, to monitor the voltage difference across the relays, voltage sampling points are led out from the busbars at the front end (near the battery side) and the rear end (near the load side) of the relays. The acquisition harness of the electrical connection assembly is electrically connected to these voltage sampling points to transmit the voltage signal to the BMU.

[0073] To prevent insulation failure or short circuits within the power battery, equipotential bonding is necessary to ensure that all accessible metal parts maintain the same potential as the vehicle body ground, thereby eliminating potential differences and preventing current from being generated upon human contact. Simultaneously, equipotential bonding also prevents damage to the delicate electronic components inside the BMS from static electricity buildup caused by friction or induction.

[0074] However, functions such as voltage signal acquisition, equipotential bonding, and grounding protection all require electrical connection components. In related technologies, these electrical connection components primarily rely on bolt fastening to connect to busbars, sheet metal supports, or box beams. This method of electrical connection has poor versatility and low operational efficiency. The main reason is that in different application scenarios such as relay sampling, cell sampling, sheet metal supports, and box grounding within high-voltage boxes, the materials, thicknesses, and installation spaces of the entities to be connected vary, requiring the design of electrical connection components of different specifications. The poor versatility of these components leads to a wide variety of parts, increasing the difficulty of manufacturing. Furthermore, bolt fastening requires additional tightening processes and anti-loosening measures. This electrical connection method makes rapid and convenient assembly difficult, thus limiting production efficiency.

[0075] To address the aforementioned shortcomings, this application aims to improve the versatility and assembly efficiency of electrical connection components by reducing the differentiation of electrical connection components.

[0076] Based on this improvement idea, this application provides a battery device 200 for providing electrical energy to electrical devices.

[0077] Electrical equipment can include mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0078] In the following description, "left" and "right" correspond to Figures 3 to 8 The left and right directions.

[0079] like Figure 1 As shown, the electrical equipment can be a vehicle 300, such as a new energy vehicle, which can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle; or the electrical equipment can be a drone or a ship. The vehicle 300 may include a cabin 301 and a vehicle floor 302, with a battery device 200 located between the cabin 301 and the vehicle floor 302. The battery device 200 can be located at the bottom, front, or rear of the vehicle 300, and is used to provide electrical power for the motor and other components in the vehicle.

[0080] Battery assembly 200 includes housing 13. For example... Figure 2 As shown, the housing 13 is hollow inside, used to accommodate one or more battery cells 100. Depending on the shape, number, arrangement, and other requirements of the battery cells 100, the housing 13 may also have different shapes and sizes. For example, the housing 13 may include a housing portion 13A and a cover portion 13B. The end of the housing portion 13A has an opening, and the cover portion 13B is used to close the opening of the housing portion 13A. For example, depending on the arrangement of the multiple battery cells 100, the housing portion 13A may have a rectangular cylindrical structure. To facilitate maintenance of the battery device 200, the housing 13 is detachably installed on the electrical equipment.

[0081] Optionally, the structural components of the electrical equipment form a space for accommodating the battery cell 100, which functions as the housing 13 in the battery device 200. For example, when the battery cell 100 is used in a vehicle 300, the vehicle frame forms a space for accommodating the battery cell 100.

[0082] In some embodiments, such as Figures 3 to 12 As shown, the battery device 200 of this application includes:

[0083] The main body to be connected; and

[0084] An electrical connection assembly includes a first electrical connector 1 and a second electrical connector 2, wherein the second electrical connector 2 is detachably connected to the first electrical connector 1 and achieves electrical connection in the connected state to obtain an electrical signal of the subject to be connected or to connect the subject to be connected in an equipotential manner.

[0085] The first electrical connector 1 and the second electrical connector 2 are plugged into each other. The first electrical connection part 12 is connected to the main body to be connected through the welding part 10. The extension direction of the welding part 10 is consistent with the insertion direction of the second electrical connector 2.

[0086] Among them, the main body to be connected can be the busbar 8, the bracket 14, and the box beam of the box 13, etc.

[0087] Optionally, such as Figure 3 As shown, the battery device 200 may include multiple BMUs. Each BMU includes a housing 7 and a circuit board. The housing 7 is attached to a bracket 14. The circuit board is located within the housing 7 and includes a grounding port.

[0088] Optionally, such as Figure 3 As shown, bracket 14 is supported between the box beams of box body 13. Bracket 14 can be a sheet metal bracket.

[0089] The welded part 10 can be formed using welding methods such as laser welding, ultrasonic welding, or resistance welding. Figures 4 to 10 As shown, the welding part 10 may include at least one welding wire. For example, the welding part 10 may have two welding wires, which are arranged relatively alternately. This welding method has a high connection strength and helps to prevent the first electrical connector 1 from detaching from the body to be connected, thereby extending the service life of the battery device 200.

[0090] Optionally, the welding part 10 may also include at least one weld point.

[0091] Optionally, such as Figure 4 As shown, the main component to be connected can be busbar 8, and the second electrical connector 2 is electrically connected to the BMU. Busbar 8 is electrically connected to relay 9. In the connected state, the electrical connection assembly transmits the signals acquired from busbar 8 to the BMU.

[0092] Optionally, such as Figure 5 As shown, the main body to be connected can be the bracket 14, and the second electrical connector 2 is electrically connected to the BMU. In the connected state, the bracket 14 can be equipotentially connected to the grounding port of the circuit board inside the BMU through the electrical connection component, thereby preventing the risk of electric shock or electromagnetic interference caused by potential difference, which is beneficial to improving the safety and electromagnetic compatibility of the battery device 200.

[0093] Optionally, such as Figure 6 As shown, the main body to be connected can be the enclosure 13, and the BMU can be installed on the enclosure 13. The second electrical connector 2 is electrically connected to the grounding terminal of the battery device 200. In the connected state, the electrical connection assembly grounds the enclosure 13, so that in the event of insulation failure or high-voltage leakage fault, the fault current can be quickly discharged, preventing electric shock accidents caused by the enclosure 13 being energized, and also improving electromagnetic compatibility.

[0094] For example, such as Figure 11As shown, the second electrical connector 2 may include a second electrical connection portion 21, which includes a slot 211. The slot 211 can cooperate with the first electrical connection portion 12. When the first electrical connector 1 and the second electrical connector 2 are plugged into each other, the first electrical connection portion 12 is accommodated in the slot 211.

[0095] The insertion direction of the second electrical connector 2 is the insertion direction between the second electrical connector 21 and the first electrical connector 12.

[0096] For example, such as Figures 4 to 10 As shown, the welding part 10 may include two welding wires.

[0097] Based on the battery device 200 provided in this embodiment, the electrical connection assembly of the battery device 200 includes a first electrical connector 1 welded and fixed to the body to be connected, and a second electrical connector 2 separated from or connected to the first electrical connector 1, so as to realize signal acquisition or equipotential connection of the body to be connected when the first electrical connector 1 and the second electrical connector 2 are in a connected state. The first electrical connector 1 can be connected to different bodies to be connected through the welding part 10, which is beneficial for flexibly selecting the connection position of the electrical connection assembly, reducing the differentiation of the electrical connection assembly, improving the versatility and assembly efficiency of the electrical connection assembly, thereby helping to reduce production costs.

[0098] The first electrical connector 1 and the second electrical connector 2 are plugged into each other, allowing for installation and removal of both components via a plug-and-play method. This simplifies assembly and maintenance processes, eliminates the need for additional assembly tools, and improves operational efficiency. During the plugging and unplugging process, the tensile or compressive stress generated on the welded portion 10 is in the same direction as the extension direction of the welded portion 10. This helps reduce shear force or bending moment on the welded portion 10, thereby lowering the risk of breakage and ensuring the reliability of the electrical connection assembly.

[0099] like Figure 9 and Figure 10 As shown, in some embodiments, the first electrical connector 1 includes a main body portion 11 and a first electrical connector portion 12 connected to each other. The main body portion 11 is connected to one side of the body to be connected along the thickness direction via a welding portion 10. The first electrical connector portion 12 extends out of the edge of the body to be connected and is electrically connected to the second electrical connector 2.

[0100] The main body to be connected can be a copper busbar, sheet metal bracket, or box beam, etc. For example, the part to be connected is plate-shaped.

[0101] The first electrical connector 1 includes a main body 11 and a first electrical connection 12 that are interconnected. The main body 11 is welded to the body to be connected, and the first electrical connection 12 is electrically connected to the second electrical connector 2. This arrangement helps to spatially separate the electrical connection area and the welding area between the first electrical connection 12 and the second electrical connector 2, thereby avoiding contamination or damage to the electrical contact surface caused by high temperatures and welding slag generated during the welding process, which helps to ensure the stability and reliability of the electrical connection. In addition, the main body 11 is connected to one side of the body to be connected along the thickness direction, which provides sufficient welding space, thereby increasing the length or area of ​​the welding area and improving the strength and reliability of the welded connection.

[0102] In addition, the battery has a complex internal structure and a compact space, and the installation space for electrical connection components is limited. Setting the first electrical connection part 12 to extend out of the edge of the main body to be connected and to be electrically connected to the second electrical connection part 2 is beneficial for flexibly selecting the installation position of the first electrical connection part 1, and also helps to reduce space occupation and improve structural compactness.

[0103] In some embodiments (not shown), the first electrical connector 1 may include a first limiting portion, and the second electrical connector 2 may include a second limiting portion. The second limiting portion and the first limiting portion cooperate with each other to limit the relative position of the first electrical connector 1 and the second electrical connector 2. For example, one of the first limiting portion and the second limiting portion includes a protrusion, and the other of the first limiting portion and the second limiting portion includes a hole or groove that mates with the protrusion.

[0104] This configuration enables the first electrical connector 1 and the second electrical connector 2 to be snapped together, thereby improving the structural connection stability and ensuring the electrical connection stability.

[0105] like Figure 7 and Figure 8 As shown, in some embodiments, the second electrical connector 2 has a wiring port 20, which is configured to connect the wire 6 to the second electrical connector 2;

[0106] The orientation of the wiring port 20 is set at an angle to the insertion direction of the second electrical connector 2.

[0107] For example, further such as Figure 7 and Figure 8 As shown, the wiring port 20 can be oriented in a direction perpendicular to the insertion direction.

[0108] For example (not shown), the wiring port 20 can also be oriented at an acute angle to the plugging direction.

[0109] The orientation of the wiring port 20 is set at an angle to the insertion direction of the second electrical connector 2, which can guide the wire 6 to extend in a direction at an angle to the insertion direction, thereby reducing the space occupied by the wire 6 along the insertion direction of the second electrical connector 2, making the structure of the electrical connection assembly compact, and facilitating flexible selection of the installation space of the electrical connection assembly.

[0110] In some implementations (not shown), the battery device 200 includes multiple electrical connection components, in at least two of which the wiring port 20 of the second electrical connector 2 faces different directions.

[0111] For example, such as Figure 5 As shown, the wiring port 20 is oriented in a first direction perpendicular to the insertion direction of the second electrical connector 2.

[0112] For example, such as Figure 6 As shown, the wiring port 20 is oriented in a second direction that is perpendicular to the insertion direction of the second electrical connector 2, and the second direction is opposite to the first direction.

[0113] By orienting the wiring ports 20 of the second electrical connectors 2 of at least two electrical connection components in different directions, operators can quickly identify and match the corresponding connection positions by the orientation of the wiring ports 20 during installation or maintenance, thereby avoiding mis-insertion or reverse connection and improving the safety and reliability of battery device 200 assembly operations.

[0114] like Figures 4 to 6 , Figure 12 As shown, in some embodiments, the electrical connection assembly further includes a sheath 3, which covers the second electrical connection portion 21.

[0115] For example, such as Figure 12 As shown, the sheath 3 includes a first sheath portion 31 and a second sheath portion 32. The first sheath portion 31 has the same shape as the second electrical connection portion 21 and covers the second electrical connection portion 21. The second sheath portion 32 covers the wiring area between the second electrical connector 2 and the wire 6.

[0116] For example, tape can be wrapped around the opening 30 of the second sheath 32. On the one hand, this helps to connect the wire 6 to the sheath 3 and supports the connection between the wire 6 and the second electrical connection 21. On the other hand, it also helps to seal the opening 30 and prevent dust and other impurities from affecting the stability of the electrical connection.

[0117] The sheath 3 can protect the connection between the first electrical connector 1 and the second electrical connector 2, thereby helping to prevent dust and other impurities from affecting the stability of the electrical connection.

[0118] like Figure 4 As shown, in some embodiments, the battery device 200 further includes:

[0119] The high-voltage box assembly includes a relay 9 and a busbar 8, which is electrically connected to the relay 9 and serves as the main body to be connected.

[0120] The electrical connection component is configured to acquire the electrical signal of the busbar 8.

[0121] For example, further such as Figure 4 As shown, the busbar 8 can be electrically connected to an electrical connection assembly for signal acquisition.

[0122] For example, such as Figure 10 As shown, the busbar 8 can also be electrically connected to two electrical connection assemblies to collect voltage signals at the relay 9 and fuse 15, respectively. The first electrical connectors 1 of the two electrical connection assemblies are installed at different positions, and the two welded parts 10 extend in different directions. The electrical connection assemblies allow for flexible selection of installation position and direction based on the structural shape of the body to be connected and the installation space.

[0123] As the main body to be connected, the busbar 8 can achieve functions such as signal acquisition through electrical connection components of the same specifications. This realizes the universal design of electrical connection components, which helps to simplify the electrical connection assembly process of the busbar 8 and battery cells of different specifications, reduce the use of electrical connection components of different specifications, and thus help to reduce the overall production cost and maintenance difficulty of the battery module.

[0124] like Figure 2 As shown, in some embodiments, the high-voltage box assembly includes a plurality of busbars 8, two of which are electrically connected to the first and second contacts of the same relay 9, respectively.

[0125] Among them, two busbars 8 connected to the same relay 9 are respectively configured with two electrical connection components, and the two electrical connection components are respectively used to obtain the electrical signals of the busbars 8 connected to the first contact and the second contact.

[0126] For example, such as Figure 4As shown, the high-voltage box 19 includes multiple busbars 8 and relays 9. The multiple busbars 8 extend along the length of the high-voltage box 19 and are spaced apart from each other, including a first busbar 81, a second busbar 82, and a third busbar 83 from left to right. The relays 9 include a main positive relay and a main negative relay. The main positive relay includes a first contact, and the main negative relay includes a second contact. A first end of the first busbar 81 is electrically connected to the first contact, and a second end is electrically connected to one terminal of a fuse 15. The other terminal of the fuse 15 is electrically connected to the main positive output interface of the high-voltage box 19, thus connecting it in series in the main positive circuit. An electrical connection assembly is electrically connected to the first busbar 81 to acquire the voltage signal of the main positive relay and transmit it to the BMU. A first end of the second busbar 82 is electrically connected to the second contact, and a second end is electrically connected to the main negative output interface of the high-voltage box 19. An electrical connection assembly is electrically connected to the second busbar 82 to acquire the voltage signal of the main negative relay and transmit it to the BMU.

[0127] The electrical connection component can collect and transmit the voltage signals of the main positive and main negative relays to the BMU, enabling real-time monitoring and fault diagnosis of the contact status of relay 9. For example, it can determine whether relay 9 is normally closed or open, and detect whether the contacts are stuck or open, thereby ensuring the safety and reliability of the high-voltage circuit.

[0128] like Figure 5 As shown, in some embodiments, the battery device 200 further includes:

[0129] The bracket 14, as the main body to be connected, is connected to the first electrical connector 1; and

[0130] The battery control unit has a grounding port, which is connected to the second electrical connector 2 via a wire 6 to connect the grounding port to the bracket 14 at equipotential.

[0131] The first end of the conductor 6 is electrically connected to the second electrical connector 2, and the second end is electrically connected to the grounding port of the BMU. The BMU includes a circuit board, which includes a grounding port.

[0132] Optionally, such as Figure 5 As shown, the circuit board may include multiple signal transmission ports, one of which is a ground port, and the other signal transmission ports are used to realize functions such as voltage signal acquisition and temperature signal acquisition.

[0133] The electrical connection component enables the bracket 14 to be connected to the BMU at the same potential, thereby ensuring that there is no potential difference between the two, avoiding signal interference, and improving the stability and reliability of the battery device 200.

[0134] like Figure 5As shown, in some embodiments, the surface of the bracket 14 is provided with a coating that covers the area of ​​the surface of the bracket 14 other than the first electrical connector 1.

[0135] Among them, the area on the surface of the bracket 14 other than the first electrical connector 1 is the area that is not opposite to the main body 11 along the thickness direction of the bracket 14.

[0136] The coating covering the area of ​​the support 14 outside the first electrical connector 1 helps to avoid poor welding.

[0137] like Figure 6 As shown, in some embodiments, the battery device 200 further includes:

[0138] The housing 13 serves as the main body to be connected and is connected to the first electrical connector 1;

[0139] Among them, the second electrical connector 2, which is connected to the first electrical connector 1 located on the housing 13, is connected to the grounding terminal at the same potential, so that the housing 13 is connected to the grounding terminal at the same potential.

[0140] Optionally, the grounding terminal can be the vehicle frame, etc.

[0141] The enclosure 13 can be grounded through the electrical connection components, thereby safely conducting the leakage current or induced charge of the enclosure 13 and the internal high-voltage components to the ground, preventing electric shock accidents and ensuring the use of the battery device 200 and the safety of personnel.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A battery device, characterized by, include: Subject to be connected; and An electrical connection assembly includes a first electrical connector (1) and a second electrical connector (2). The first electrical connector (1) is connected to the body to be connected via a welding part (10). The second electrical connector (2) is detachably connected to the first electrical connector (1) and achieves electrical connection in the connected state to obtain the electrical signal of the body to be connected or to connect the body to be connected at equipotential. The first electrical connector (1) and the second electrical connector (2) are plugged into each other, and the extension direction of the welding part (10) is consistent with the insertion direction of the second electrical connector (2).

2. The battery device according to claim 1, characterized by The first electrical connector (1) includes a main body (11) and a first electrical connector (12) connected to each other. The main body (11) is connected to one side of the body to be connected along the thickness direction through the welding part (10). The first electrical connector (12) extends out of the edge of the body to be connected and is electrically connected to the second electrical connector (2).

3. The battery device of claim 1, wherein The second electrical connector (2) has a wiring port (20) configured to connect a wire (6) to the second electrical connector (2); The orientation of the wiring port (20) is set at an angle to the insertion direction of the second electrical connector (2).

4. The battery device of claim 1, wherein The second electrical connector (2) has a wiring port (20) configured to connect a wire (6) to the second electrical connector (2); The battery device includes a plurality of the electrical connection components, in at least two of the electrical connection components, the wiring port (20) of the second electrical connector (2) faces different directions.

5. The battery device according to any one of claims 1 to 4, characterized by, The second electrical connector (2) includes a second electrical connection portion, and the electrical connection assembly further includes a sheath (3) which covers the second electrical connection portion.

6. The battery device according to any one of claims 1 to 4, wherein Also includes: The high-voltage box assembly includes a relay (9) and a busbar (8), the busbar (8) being electrically connected to the relay (9), and the busbar (8) serving as the main body to be connected; The electrical connection component is configured to acquire the electrical signal of the bus (8).

7. The battery device of claim 6, wherein The high-voltage box assembly includes a plurality of busbars (8), and two of the busbars (8) are electrically connected to the first contact and the second contact of the same relay (9), respectively. Among them, the two busbars (8) connected to the same relay (9) are respectively provided with two electrical connection components, and the two electrical connection components are respectively used to obtain the electrical signals of the busbars (8) connected to the first contact and the second contact.

8. The battery device of any one of claims 1-4, wherein, Also includes: The bracket (14) is connected to the first electrical connector (1) as the main body to be connected; and The battery control unit has a ground port, which is connected to the second electrical connector (2) via a wire (6) to connect the ground port to the bracket (14) at equipotential.

9. The battery device of claim 8, wherein, The surface of the bracket (14) is provided with a coating that covers the area of ​​the surface of the bracket (14) other than the first electrical connector (1).

10. The battery device according to any one of claims 1-4, characterized in that, Also includes: The housing (13) is connected to the first electrical connector (1) as the main body to be connected; The second electrical connector (2), which is connected to the first electrical connector (1) located on the housing (13), is connected to the grounding terminal at the same potential, so that the housing (13) is connected to the grounding terminal at the same potential.

11. An electrical device, characterized by The battery device (200) includes any one of claims 1 to 10.

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