Battery device, high-voltage box and electric equipment

Abstract

The invention relates to the technical field of electrical connection, and provides a battery device, a high-voltage box and electric equipment. The battery device comprises a single battery and a high-voltage box, the high-voltage box is electrically connected with the single battery, the high-voltage box comprises a sampling assembly and a circuit board, and the sampling assembly comprises an electric connecting piece and a sampling terminal. The electric connecting sheet is provided with a plug-in channel; the sampling terminal comprises a connecting piece and a plug connector which are connected with each other, the connecting piece is connected with the circuit board, and the plug connector is at least partially inserted into the plug channel; and at least part of the plug connector can be deformed, so that the plug connector is in interference fit with the plug channel. The sampling terminal and the electric connecting sheet are connected in a plug-in mode, the plug-in channel is arranged on the electric connecting sheet, and the plug-in piece of the sampling terminal is inserted into the plug-in channel of the electric connecting sheet, so that the sampling terminal and the electric connecting sheet can be conveniently and quickly assembled by adopting the connecting mode, the assembly steps can be reduced, and the assembly efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of electrical connection technology, and more particularly to a battery device, a high-voltage box, and an electrical appliance. Background Technology

[0002] In related technologies, the high-voltage box of a battery device typically includes various electrical connection components. To sample these components, sampling terminals are generally connected to corresponding electrical connection plates. The sampling terminals and connection plates are connected via ultrasonic welding or bolt tightening, but this method is costly, inefficient, and prone to loosening under vibration, leading to sampling failure. Therefore, the high-voltage box of the battery device in these technologies still requires improvement. Summary of the Invention

[0003] In view of this, embodiments of this application provide a battery device, a high-voltage box, and an electrical device, which can improve the reliability of the connection between the sampling terminal and the electrical connector and improve assembly efficiency.

[0004] The technical solution of this application embodiment is implemented as follows: A first aspect of this application provides a battery device, including a battery cell and a high-voltage box, wherein the high-voltage box is electrically connected to the battery cell, and the high-voltage box includes a circuit board and a sampling component, the sampling component including: Electrical connector with insertion channel; The sampling terminal includes a connector and a plug-in connected to each other, the connector being connected to the circuit board, and the plug-in being at least partially inserted into the plug-in channel; Wherein, at least a portion of the connector is capable of deformation so that the connector is interference-fitted with the connector channel; The connector includes: The main body is connected to the connecting member; An elastic portion is disposed on the main body and protrudes from the main body in a first direction, at least partially located in the insertion channel, and abuts against the electrical connection piece; the elastic portion is a spring arm structure, and both ends of the elastic portion are connected to the main body in the insertion direction; Wherein, the first direction intersects with the insertion direction.

[0005] In this embodiment, the sampling terminal and the electrical connector are connected by a plug-in connection. By providing a plug-in channel in the electrical connector, the connector of the sampling terminal is inserted into the plug-in channel. This connection method is convenient and quick during installation, facilitating rapid assembly of the sampling terminal and the electrical connector, reducing assembly steps, and improving assembly efficiency. Simultaneously, the deformable portion of the connector is interference-fitted with the plug-in channel, allowing the plug-in channel to exert a clamping force on the connector. The plug-in channel limits and fixes the connector, reducing the possibility of the sampling terminal falling out of the plug-in channel, improving the connection reliability between the sampling terminal and the electrical connector, and enhancing sampling stability during the sampling process. The main body is used to connect with the connector and also provides a fulcrum for the elastic part. When the elastic part is compressed by the plug-in channel, the elastic part can undergo elastic deformation. The spring arm structure connects to the main body at both ends along the insertion direction. After the electrical connection piece and sampling terminal are installed, the spring arm structure can continuously maintain elastic tension on the insertion channel, ensuring a stable force between the spring arm structure and the insertion channel. This reduces the possibility of relative movement between the electrical connection piece and sampling terminal when the battery device vibrates during vehicle operation. Furthermore, the spring arm structure exhibits good toughness and resistance to bending fatigue, extending its service life. Compared to related technologies that use welding or fastener connections, the high-voltage box provided in this application eliminates welding and bolt tightening steps, reducing assembly steps, improving assembly efficiency, saving labor costs, reducing sampling failures caused by improper operation, and also improving connection strength and signal transmission stability.

[0006] In some embodiments, the main body includes: The first main body segment is connected at one end to the connector; The second main body segment is connected to the other end of the first main body segment, and the elastic part is located in the second main body segment.

[0007] For example, the first main paragraph is located above the second main paragraph.

[0008] In some embodiments, the cross-sectional area of ​​the first main body segment perpendicular to the axial direction of the first main body segment is greater than the cross-sectional area of ​​the connector perpendicular to the axial direction of the connector.

[0009] The first main body segment can be positioned and engaged with the side of the circuit board facing the connector, such as the lower end face of the circuit board. When the circuit board and the connector are assembled, the force exerted during the insertion of the sampling terminal is transferred to the circuit board by the contact between the first main body segment and the circuit board, reducing damage to the connector.

[0010] In some embodiments, the cross-sectional area of ​​the first main body segment perpendicular to the axial direction of the first main body segment is greater than the cross-sectional area of ​​the second main body segment perpendicular to the axial direction of the second main body segment.

[0011] The first main body segment can be positioned and engaged with the side of the electrical connector facing the connector, for example, by positioning and engaging with the upper end face of the electrical connector. When the sampling terminal is assembled with the electrical connector, and the elastic part moves relative to the insertion channel to a preset position, the first main body segment can restrict further relative movement between the elastic part and the insertion channel.

[0012] In some embodiments, the cross-sectional area of ​​the first main body segment perpendicular to the axial direction of the first main body segment is greater than the cross-sectional area of ​​the connector perpendicular to the axial direction of the connector; the cross-sectional area of ​​the first main body segment perpendicular to the axial direction of the first main body segment is greater than the cross-sectional area of ​​the second main body segment perpendicular to the axial direction of the second main body segment.

[0013] The first main body segment can be positioned and engaged with the side of the circuit board facing the connector, such as the lower end face of the circuit board. When the circuit board and connector are assembled, the force exerted during the sampling terminal insertion process is transferred to the circuit board by the first main body segment abutting against the circuit board, reducing damage to the connector. The first main body segment can also be positioned and engaged with the side of the electrical connecting piece facing the connector, such as the upper end face of the electrical connecting piece. When the sampling terminal and electrical connecting piece are assembled, and the elastic part moves relative to the insertion channel to a preset position, the first main body segment can restrict further relative movement between the elastic part and the insertion channel.

[0014] In some embodiments, the elastic portion is located in the middle of the second main body segment.

[0015] In this way, the interference fit between the elastic part located in the middle and the insertion channel can reduce the fitting length between the insertion part and the insertion channel along the insertion direction, thus reducing the difficulty of insertion. Moreover, the elastic part is located in the middle of the second main body section, which facilitates the installation of other structures, such as snap-fit ​​parts and guide parts, at the end of the second main body section away from the first main body section.

[0016] In some embodiments, the elastic portion is located at the end of the second body segment away from the first body segment.

[0017] The elastic part is located at the end of the sampling terminal away from the connector. When the sampling terminal is inserted into the insertion channel, the elastic part enters the insertion channel first.

[0018] In some embodiments, the portion of the second main body segment located in the elastic portion protrudes in the first direction.

[0019] In this way, the elastic tension of the elastic part relative to the first main body can be increased, the interaction force between the elastic part and the insertion channel can be increased, and the connection strength between the elastic part and the insertion channel can be improved.

[0020] In some embodiments, the elastic portion is a single element.

[0021] When there is only one elastic part, the width of the elastic part along the circumference of the main body and the length along the insertion direction can be designed according to the requirements to improve the interference fit between the elastic part and the insertion channel and improve the connection strength between the elastic part and the insertion channel.

[0022] In some embodiments, there are at least two elastic portions, which are spaced apart and connected to the periphery of the main body.

[0023] In this way, the insertion channel can apply force to the elastic part along the circumference of the main body, which can improve the uniformity of the force exerted by the insertion channel on the elastic part, improve the effect of the interference fit, and improve the connection strength between the elastic part and the insertion channel.

[0024] In some embodiments, the sampling terminal further includes: A snap-fit ​​element is disposed on the main body portion and protrudes from the main body portion along the first direction, the snap-fit ​​element being located on the side of the elastic portion away from the connector; The snap-fit ​​component is deformable so that it can pass through the insertion channel and snap onto the side of the electrical connector away from the circuit board.

[0025] By setting a snap-fit ​​component, it can be limited and engaged with the side of the electrical connector away from the connector, such as the lower end face of the electrical connector, reducing the possibility that the connector will come off the electrical connector when the high voltage box is subjected to external vibration.

[0026] In some embodiments, the snap-fit ​​element is a resilient snap-fit.

[0027] Thus, during the assembly of the sampling terminal and the electrical connector, the elastic clip returns to its original position after passing through the insertion channel, and the elastic clip can engage with the electrical connector for limiting. Furthermore, the elastic clip's return to its original position and collision with the electrical connector produces a "click" sound, indicating that the connection is complete, making it easy to determine proper connection during assembly.

[0028] In some embodiments, the snap-fit ​​element is a protrusion.

[0029] When the sampling terminal is assembled with the electrical connector, the protrusion passes through the insertion channel and then deforms and resets, allowing it to engage with the electrical connector for positioning.

[0030] In some embodiments, the snap-fit ​​connector is a single unit.

[0031] When there is only one snap-fit ​​component, the length of the snap-fit ​​component along the circumference of the main body can be designed according to the limiting requirements to improve the limiting fit between the snap-fit ​​component and the electrical connector and reduce the possibility that the limiting fit area between the snap-fit ​​component and the electrical connector is too small and affects the limiting effect.

[0032] In some embodiments, there are at least two snap-fit ​​members, which are spaced apart and connected to the periphery of the main body.

[0033] This improves the uniformity of the locking fit between the snap-fit ​​component and the electrical connector, thus enhancing the effectiveness of the locking fit.

[0034] In some embodiments, the connector further includes: The guide portion is connected to the main body portion and is located at the end of the main body portion away from the connector.

[0035] The guide section guides the relative insertion movement of the sampling terminal and the electrical connection piece, making it easier for the connector to be inserted into the insertion channel.

[0036] In some embodiments, the connector is an arc-shaped component; the plug is a tubular component connected to the arc-shaped component, and the tubular component has a splice seam.

[0037] In other words, the sampling terminal can be formed by stamping and winding a sheet-like substrate. One part of the substrate is wound into an arc shape, and another part of the substrate is wound into a tubular shape. The joints formed by the enclosed parts are then joined together.

[0038] In some embodiments, both the elastic portion and the snap-fit ​​component are formed by punching the base material of the main body portion.

[0039] Using punching and forming is beneficial for mass production, and can reduce the number of parts, improve production efficiency, and reduce manufacturing costs.

[0040] In some embodiments, the elastic part and the snap-fit ​​member are both elastic arm structures formed by punching the base material of the main body. The tubular member has a first punched opening and a second punched opening. The elastic part is located at the first punched opening, and the snap-fit ​​member is located at the second punched opening.

[0041] The elastic arm structure has good toughness and resistance to bending fatigue. For example, when the elastic part is an elastic arm structure, the insertion channel exerts a clamping force on the elastic part. Setting the elastic part as an elastic arm structure is beneficial to ensure that the insertion channel continuously exerts a clamping force on the elastic part.

[0042] In some embodiments, the tubular member is welded or bonded along the joint.

[0043] This allows for the sealing of the seams, improving the structural strength and reliability of the tubular components, i.e., the connectors, reducing the possibility of deformation along the seams during sampling, and improving sampling accuracy.

[0044] In some embodiments, the sampling terminal is a one-piece molded part.

[0045] This improves the overall structural strength of the sampling terminals, reduces manufacturing steps, and simplifies the production process.

[0046] In some embodiments, the sampling terminal further includes: A conductive plating layer covers at least the area where the connector and the connector channel are in an interference fit.

[0047] The conductivity of the conductive plating layer can be greater than that of the connector. This improves the conductivity of the sampling terminal. For example, the conductive plating layer can be a metallic layer, such as a tin plating layer, a gold plating layer, a silver plating layer, or a nickel plating layer, etc.

[0048] A second aspect of this application provides a high-voltage box, the high-voltage box including a circuit board and a sampling component, the sampling component including: Electrical connector with insertion channel; The sampling terminal includes a connector and a plug-in connected to each other, the connector being connected to the circuit board, and the plug-in being at least partially inserted into the plug-in channel; At least a portion of the connector is capable of deformation to allow the connector to be interference-fitted with the connector channel.

[0049] A third aspect of this application provides an electrical appliance, including: The battery device described in any one of the embodiments of this application is used to store or provide electrical energy; or, The battery device described in the embodiments of this application.

[0050] The embodiments of this application have the following beneficial effects: The battery device, high-voltage box, and electrical equipment provided in this application embodiment are connected to the sampling terminal and the electrical connection piece by a plug-in method. By providing a plug-in channel in the electrical connection piece, the plug of the sampling terminal is inserted into the plug-in channel of the electrical connection piece. This connection method is convenient and quick to install, facilitating rapid assembly of the sampling terminal and the electrical connection piece, reducing assembly steps, and improving assembly efficiency. Simultaneously, the deformable part of the plug-in is interference-fitted with the plug-in channel, allowing the plug-in channel to exert a clamping force on the plug-in. The plug-in channel limits and fixes the plug-in, reducing the possibility of the sampling terminal falling out of the plug-in channel, improving the connection reliability between the sampling terminal and the electrical connection piece, and enhancing the sampling stability during the sampling process. The main body is used to connect with the connector and also provides a fulcrum for the elastic part. When the elastic part is compressed by the plug-in channel, the elastic part can undergo elastic deformation. The spring arm structure connects to the main body at both ends along the insertion direction. After the electrical connection piece and sampling terminal are installed, the spring arm structure can continuously maintain elastic tension on the insertion channel, ensuring a stable force between the spring arm structure and the insertion channel. This reduces the possibility of relative movement of the electrical connection piece and sampling terminal when the battery device vibrates during vehicle operation. Furthermore, the spring arm structure has good toughness and resistance to bending fatigue, extending its service life. Compared to the welding or fastener connections used in related technologies, the battery device, high-voltage box, and electrical equipment provided in this application can omit welding and bolt tightening steps, reducing assembly steps, improving assembly efficiency, saving labor costs, reducing sampling failures caused by improper operation, and also improving connection strength and signal transmission stability. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the structure of an electrical device in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of a battery device according to an embodiment of this application; Figure 3 This is a partially enlarged structural diagram of the high-voltage box in one embodiment of this application; Figure 4 This is a schematic diagram of a partial explosion of the high-voltage box in one embodiment of this application; Figure 5 for Figure 4 Enlarged view of point A; Figure 6 This is a schematic diagram of another partial exploded structure of the high-voltage box in one embodiment of this application; Figure 7 This is a partial front view of the high-voltage box in one embodiment of this application; Figure 8 for Figure 7 A partial structural schematic diagram of the BB cross section; Figure 9This is a schematic diagram of the sampling terminal in one embodiment of this application.

[0052] Explanation of reference numerals in the attached figures 100. High-voltage box; 10. Sampling assembly; 11. Electrical connector; 11a. Insertion channel; 12. Sampling terminal; 121. Connector; 122. Insertion piece; 1221. Main body; 1201. First main body section; 1202. Second main body section; 1222. Elastic part; 1223. Guide part; 122a. Splicing seam; 122b. First punched notch; 122c. Second punched notch; 125. Snap-fit ​​piece; 20. Circuit board; 30. Box body; 1000. Electrical equipment; 200. Battery device; 210. Battery box; 211. Box body; 212. Cover; 220. Battery cell; 300. Controller; 400. Motor; X. Insertion direction. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0055] It should be noted that in the embodiments of this application, the orientation or positional relationship such as "insertion direction" and "first direction" are based on the orientation or positional relationship shown in the accompanying drawings. It should be understood that these orientational terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be 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 the embodiments of this application based on the specific circumstances.

[0057] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above" the second feature 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" 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.

[0058] In the description of this specification, the references to terms such as "some embodiments" and "some specific embodiments" refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0059] Unless otherwise defined, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the embodiments of this application is for the purpose of describing the embodiments of this application only and is not intended to limit this application.

[0060] In the implementation of this application, the collection and processing of relevant data should strictly comply with the requirements of relevant laws and regulations, obtain the informed consent or separate consent of the personal information subject, and carry out subsequent data use and processing within the scope of laws and regulations and the authorization of the personal information subject.

[0061] Before providing a further detailed description of the embodiments of this application, the nouns and terms involved in the embodiments of this application will be explained, and the nouns and terms involved in the embodiments of this application shall be interpreted as follows.

[0062] In related technologies, high-voltage boxes typically include various electrical connection components. To sample these components, sampling terminals are generally connected to corresponding electrical connection plates. The sampling terminals and connection plates are connected via ultrasonic welding or bolt tightening, but this method is costly, inefficient, and prone to loosening under vibration, leading to sampling failure. Existing technologies still have room for improvement.

[0063] In view of this, embodiments of this application provide a battery device that can improve the reliability of the connection between the sampling terminal and the electrical connector, and improve assembly efficiency. The battery device includes a battery cell and a high-voltage box, the high-voltage box being electrically connected to the battery cell.

[0064] This application provides a high-voltage box, which is the high-voltage box in the battery device of any embodiment of this application.

[0065] In some embodiments, the battery device includes a battery case, with individual battery cells and a high-voltage box located inside the battery case.

[0066] This application also provides an electrical device including a high-voltage box according to any of the embodiments of this application. The high-voltage box may be located inside the battery compartment of the battery device or outside the battery device. For example, the battery device may have its own high-voltage box, or the battery device may not have a high-voltage box.

[0067] This application also provides an electrical device, including a battery device according to embodiments of this application, for storing or providing electrical energy. The battery device includes a high-voltage box according to any one of the embodiments of this application.

[0068] Electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0069] For ease of explanation, please refer to the following examples. Figure 1 This application will use a vehicle as an example to illustrate an embodiment of an electrical device 1000. The vehicle 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 200 is installed inside the vehicle, and the battery device 200 can be located at the bottom, front, or rear of the vehicle. The battery device 200 can be used to power the vehicle; for example, the battery device 200 can serve as the vehicle's operating power source. The vehicle may also include a controller 300 and a motor 400. The controller 300 controls the battery device 200 to supply power to the motor 400, for example, to meet the power needs of the vehicle during starting, navigation, and driving.

[0070] In some embodiments of this application, the battery device 200 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0071] Please refer to Figure 2This is an exploded view of a battery device 200 provided in some embodiments of this application. The battery device 200 includes a battery case 210 and battery cells 220, with the battery cells 220 housed within the battery case 210. The battery case 210 provides space for the battery cells 220 and can have various structures. For example, the battery case 210 includes a case body 211 and a cover 212, with the cover 212 covering the case body 211 to form a housing space, within which the battery cells 220 are disposed.

[0072] In the battery device 200, there can be multiple battery cells 220, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 220 are connected in both series and parallel connections. Multiple battery cells 220 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 220 is housed within the battery box 210. Alternatively, the battery device 200 can also consist of multiple battery cells 220 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the battery box 210. The battery device 200 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 220.

[0073] Each battery cell 220 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 220 can be cylindrical, flat, cuboid, or other shapes.

[0074] The battery unit 200 is generally used in conjunction with a high-voltage power distribution device. The high-voltage power distribution device can be installed either externally or internally of the battery unit 200. It couples the output power of the battery unit 200, distributing it to systems requiring high-voltage power, such as motor controllers, electric compressors, and PTC heaters. The high-voltage power distribution device typically has current and voltage acquisition capabilities, enabling safe management of the battery unit 200 and providing overvoltage, overcurrent, and overtemperature protection. It also provides real-time monitoring of high-voltage connection and insulation status.

[0075] High-voltage power distribution equipment typically includes a high-voltage box and low-voltage connectors. For example, the high-voltage box includes the main body, current sensors, and a battery management unit (BMU). Both the current sensors and the BMU are housed within the main body. The current sensors collect current parameters from each battery compartment, while the BMU aggregates and analyzes information from the entire electric vehicle's battery system, monitors and manages it, and interacts with external systems.

[0076] This application also provides a high-voltage box 100, please refer to [link / reference]. Figures 3 to 9 The high-voltage box 100 includes a sampling assembly 10 and a circuit board 20. The sampling assembly 10 includes an electrical connector 11 and a sampling terminal 12. The electrical connector 11 has a insertion channel 11a; the sampling terminal 12 includes a connector 121 and a plug 122 connected to each other. The connector 121 is connected to the circuit board 20, and the plug 122 is at least partially inserted into the insertion channel 11a; wherein at least a portion of the plug 122 is deformable to allow the plug 122 to be interference-fitted with the insertion channel 11a.

[0077] The high-voltage box 100 includes a box body 30, and an electrical connection piece 11 is disposed on the box body 30. The box body 30 is used to install the circuit board 20, the sampling component 10, and other structures.

[0078] The sampling component 10 is used to sample the electrical connection components inside the high-voltage box 100, such as resistors, positive relays, negative relays, shunts, pre-charge relays, etc. The sampling terminal 12 extracts voltage or current signals through the electrical connection piece 11 and transmits them to the circuit board 20.

[0079] The circuit board 20, for example, is a PCB board, used to receive and process the raw data of the sampling component 10 and convert the analog signal output by the sampling component 10 into a digital signal that can be recognized by the controller.

[0080] The connector 121 of the sampling terminal 12 is fixedly connected to the circuit board 20. For example, the connector 121 is soldered to the circuit board 20 to improve the connection strength. In other embodiments, the connector 121 and the circuit board 20 are bonded with structural adhesive, which can reduce processing costs. Alternatively, the connector 121 and the circuit board 20 are interference-fitted. As an example, the sampling terminal 12 is a metal part, and the material can be metal or metal alloy, such as copper, copper alloy, or aluminum alloy.

[0081] The electrical connector 11 is used to connect the various electrical connection components inside the high voltage box 100, or to connect the electrical connection components inside the high voltage box 100 with other components outside the high voltage box 100. For example, the electrical connector 11 is used to connect the electrical connection components inside the high voltage box 100 with other sampling devices of the battery device.

[0082] The electrical connector 11 can be a metal sheet, made of metal or metal alloy, such as copper, copper alloy, or aluminum alloy, which can achieve conductivity and have good structural strength. For example, the electrical connector 11 can be a stamped metal sheet, which has high material utilization, strong batch consistency, and fast forming speed, thus improving production efficiency.

[0083] The connector 122 is connected to the electrical connector 11 to sample the electrical connection components connected to the electrical connector 11. The connector 122 contacts the insertion channel 11a of the electrical connector 11, forming a point current path to achieve signal transmission.

[0084] At least a portion of the connector 122 is capable of deformation, for example, at least a portion of the connector 122 may undergo elastic deformation. Specifically, the connector 122, when compressed by the insertion channel 11a, undergoes elastic deformation and possesses elastic potential energy, resulting in an interference fit between the connector 122 and the insertion channel 11a. This improves the electrical contact performance between the sampling terminal 12 and the electrical connector 11, increases the interaction force between the connector 122 and the insertion channel 11a, and increases the clamping force of the insertion channel 11a on the connector 122.

[0085] It should be noted that before the connector 122 is inserted into the insertion channel 11a, at least part of its projection along the insertion direction X is located outside the insertion channel 11a. After the connector 122 enters the insertion channel 11a, there is an interference between this part and the insertion channel 11a. The insertion channel 11a exerts a squeezing effect on this part of the connector 122, and the connector 122 also exerts a force on the insertion channel 11a. The insertion channel 11a and the connector 122 form an interference fit.

[0086] The insertion direction X refers to the direction of movement of the connector 122 when it is inserted into the insertion channel 11a. For example, the insertion direction X is the same as the extension direction of the insertion channel 11a.

[0087] The battery device 200, high-voltage box 100, and electrical equipment provided in this application embodiment are connected to the sampling terminal 12 and the electrical connector 11 by a plug-in connection. By providing a plug-in channel 11a in the electrical connector 11, the plug 122 of the sampling terminal 12 is inserted into the plug-in channel 11a of the electrical connector 11. This connection method is convenient and quick to install, facilitating rapid assembly of the sampling terminal 12 and the electrical connector 11, reducing assembly steps and improving assembly efficiency. Simultaneously, the deformed portion of the plug 122 is interference-fitted with the plug-in channel 11a, allowing the plug-in channel 11a to exert a clamping force on the plug 122. The plug-in channel 11a limits and fixes the plug 122, reducing the possibility of the sampling terminal 12 falling out of the plug-in channel 11a, improving the connection reliability between the sampling terminal 12 and the electrical connector 11, and enhancing the sampling stability during the sampling process. Compared with the welding or fastener connection methods used in related technologies, the battery device 200, high-voltage box 100 and electrical equipment provided in this application can omit welding and bolt tightening steps, reduce assembly steps, improve assembly efficiency, save labor costs, reduce sampling failure problems caused by improper operation, and also improve connection strength and signal transmission stability.

[0088] In some embodiments, the insertion channel 11a is a through hole, and the insertion member 122 is interference-fitted with the inner wall of the insertion channel 11a. This simplifies the component structure and reduces manufacturing difficulty.

[0089] Furthermore, the inner diameter of the insertion channel 11a is consistent along the insertion direction X.

[0090] Furthermore, the insertion channel 11a is generally cylindrical, and the insertion piece 122 is generally tubular.

[0091] In other embodiments, the electrical connector 11 has a guide groove that communicates with the insertion channel 11a. The diameter of the guide groove is larger than that of the insertion channel 11a, which can guide the connector 122 and facilitate assembly.

[0092] It is understandable that when the sampling terminal 12 and the electrical connector 11 are plugged in, the sampling terminal 12 can move toward the electrical connector 11 so that the connector 122 is inserted into the plugging channel 11a; or, the electrical connector 11 can move toward the sampling terminal 12 so that the connector 122 is inserted into the plugging channel 11a; or, the sampling terminal 12 and the electrical connector 11 can move toward each other at the same time so that the connector 122 is inserted into the plugging channel 11a.

[0093] In some embodiments, the circuit board 20 is located above the electrical connector 11. The sampling terminal 12 is located on the circuit board 20 and can be inserted from top to bottom into the insertion channel 11a of the electrical connector 11.

[0094] As an optional implementation, the insertion channel 11a extends through both sides of the electrical connector 11 along the insertion direction X.

[0095] Furthermore, the two ends of the connector 122 along the insertion direction X are located on the outer sides of the electrical connection piece 11.

[0096] In some embodiments, the sampling terminal 12 further includes a conductive plating layer, covering at least the portion where the connector 122 and the insertion channel 11a are interference-fitted. The conductivity of the conductive plating layer may be greater than the conductivity of the connector 122.

[0097] This improves the conductivity of the sampling terminal 12. For example, the conductive plating can be a metal layer, such as a tin plating, gold plating, silver plating, or nickel plating, etc.

[0098] In some embodiments, please refer to Figure 8 and Figure 9The connector 122 includes a main body 1221 and an elastic part 1222. The main body 1221 is connected to the connector 121; the elastic part 1222 is disposed on the main body 1221 and protrudes from the main body 1221 along a first direction, at least partially located in the insertion channel 11a, and abuts against the electrical connecting piece 11; wherein, the first direction intersects the insertion direction X. Further, a conductive plating layer covers the elastic part 1222.

[0099] The main body 1221 is used to connect with the connector 121 and also provides a fulcrum for the elastic part 1222. When the elastic part 1222 is pressed by the insertion channel 11a, the elastic part 1222 can generate elastic deformation. For example, the elastic part 1222 is a spring arm structure, with both ends of the spring arm structure connected to the main body 1221 along the insertion direction X. After the electrical connector 11 and the sampling terminal 12 are installed, the spring arm structure can continuously maintain elastic tension on the insertion channel 11a, so that a stable force can be maintained between the spring arm structure and the insertion channel 11a, reducing the possibility of relative movement of the electrical connector 11 and the sampling terminal 12 when the battery device 200 vibrates during vehicle operation. Moreover, the spring arm structure has good toughness and resistance to bending fatigue, which can extend its service life.

[0100] The shape of the elastic part 1222 is not limited; for example, please refer to [reference needed]. Figure 8 and Figure 9 The elastic portion 1222 has a sheet-like elastic arm structure, and a portion of the elastic portion 1222 is elongated. Further, the width of the elastic portion 1222 along the circumference of the main body 1221 is less than the length of the elastic portion 1222 along the insertion direction X. In other embodiments, the elastic portion 1222 can also be an elastic buckle or a protrusion. The shape of the protrusion is not limited; for example, it can be dot-shaped, block-shaped, strip-shaped, irregularly shaped, etc.

[0101] In other embodiments, the cross-section of a portion of the elastic part 1222 may also be circular, trapezoidal, or irregular, etc.

[0102] As an optional embodiment, the insertion channel 11a is cylindrical, with the first direction located from the axis of the insertion channel 11a toward the inner wall of the insertion channel 11a. This improves the connection strength of the interference fit between the insertion member 122 and the insertion channel 11a.

[0103] Furthermore, the first direction is perpendicular to the insertion direction X, which can further increase the interaction force between the insertion channel 11a and the insertion member 122, and improve the connection strength of the interference fit between the insertion member 122 and the insertion channel 11a.

[0104] In some embodiments, please refer to Figure 8 and Figure 9The main body 1221 includes a first main body segment 1201 and a second main body segment 1202. One end of the first main body segment 1201 is connected to the connector 121; the second main body segment 1202 is connected to the other end of the first main body segment 1201, and the elastic part 1222 is located in the second main body segment 1202.

[0105] In some embodiments, the first body segment 1201 is located above the second body segment 1202.

[0106] As an optional implementation, please refer to Figure 8 and Figure 9 The first main body segment 1201 has a larger cross-sectional area perpendicular to its axial direction than the second main body segment 1202. The first main body segment 1201 can engage with the side of the electrical connector 11 facing the connector 121, for example, with the upper end face of the electrical connector 11. When the sampling terminal 12 is assembled with the electrical connector 11, and the elastic part 1222 moves relative to the insertion channel 11a to a preset position, the first main body segment 1201 can restrict further relative movement between the elastic part 1222 and the insertion channel 11a. For example, when the sampling terminal 12 is inserted downwards into the insertion channel 11a, the first main body segment 1201 can limit the downward movement of the elastic part 1222.

[0107] As an optional implementation, please refer to Figure 8 and Figure 9 The cross-sectional area of ​​the first main body segment 1201 perpendicular to its axial direction is larger than that of the connector 121 perpendicular to its axial direction. The first main body segment 1201 can be positioned and engaged with the side of the circuit board 20 facing the connector 122, for example, with the lower end face of the circuit board 20. When the circuit board 20 and the connector 121 are assembled, the force exerted during the insertion of the sampling terminal 12 is transmitted to the circuit board 20 through the contact between the first main body segment 1201 and the circuit board 20, reducing damage to the connector 121.

[0108] As an optional implementation, the cross-sectional area of ​​the first main body segment 1201 perpendicular to the axial direction of the first main body segment 1201 is greater than the cross-sectional area of ​​the second main body segment 1202 perpendicular to the axial direction of the second main body segment 1202; the cross-sectional area of ​​the first main body segment 1201 perpendicular to the axial direction of the first main body segment 1201 is greater than the cross-sectional area of ​​the connector 121 perpendicular to the axial direction of the connector 121.

[0109] In some embodiments, please refer to Figure 8 and Figure 9The elastic portion 1222 is located in the middle of the second main body segment 1202. Thus, only the elastic portion 1222 in the middle has an interference fit with the insertion channel 11a, which reduces the fitting length between the insertion member 122 and the insertion channel 11a along the insertion direction X, reducing the difficulty of insertion. Furthermore, the location of the elastic portion 1222 in the middle of the second main body segment 1202 facilitates the installation of other structures, such as the snap-fit ​​member 125 and the guide portion 1223, at the end of the second main body segment 1202 away from the first main body segment 1201.

[0110] In other embodiments not shown, the elastic portion 1222 is located at the end of the second main body segment 1202 away from the first main body segment 1201. That is, the elastic portion 1222 is located at the end of the sampling terminal 12 away from the connector 121, and when the sampling terminal 12 is inserted into the insertion channel 11a, the elastic portion 1222 enters the insertion channel 11a first.

[0111] In some embodiments, please refer to Figure 8 and Figure 9 The portion of the second main body segment 1202 located at the elastic portion 1222 protrudes in the first direction. For example, the portion of the second main body segment 1202 located at the elastic portion 1222 protrudes in the first direction in a drum shape. In this way, the elastic tension of the elastic portion 1222 relative to the first main body segment 1221 can be increased, the interaction force between the elastic portion 1222 and the insertion channel 11a can be increased, and the connection strength between the elastic portion 1222 and the insertion channel 11a can be improved.

[0112] The number of elastic portions 1222 can be set to one, two, or more, etc., as needed. In some embodiments, there is only one elastic portion 1222. It is understood that when there is only one elastic portion 1222, the width of the elastic portion 1222 along the circumference of the main body portion 1221 and the length along the insertion direction X can be designed as needed to improve the interference fit effect between the elastic portion 1222 and the insertion channel 11a, and to improve the connection strength between the elastic portion 1222 and the insertion channel 11a. For example, the elastic portion 1222 is disposed around the periphery of the second main body segment 1202, that is, the elastic portion 1222 is formed in a ring shape. Alternatively, the elastic portion 1222 only occupies a portion of the periphery of the second main body segment 1202.

[0113] In some embodiments, please refer to Figure 9 There are at least two elastic portions 1222, which are connected at intervals to the periphery of the main body portion 1221, so that the insertion channel 11a can apply force to the elastic portion 1222 along the circumferential direction of the main body portion, thereby improving the uniformity of the force exerted by the insertion channel 11a on the elastic portion 1222, improving the effect of interference fit, and improving the connection strength between the elastic portion 1222 and the insertion channel 11a.

[0114] In some embodiments, please refer to Figure 9The sampling terminal 12 also includes a snap-fit ​​member 125, which is disposed on the main body 1221 and protrudes from the main body 1221 in a first direction. The snap-fit ​​member 125 is located on the side of the elastic part 1222 away from the connector 121. The snap-fit ​​member 125 is deformable so that it can pass through the insertion channel 11a and snap onto the side of the electrical connector 11 away from the circuit board 20.

[0115] The snap-fit ​​125 can deform in an elastic manner. After the snap-fit ​​125 passes through the insertion channel 11a, the insertion channel 11a does not exert any pressure on the snap-fit ​​125, and the snap-fit ​​125 returns to its original shape.

[0116] By providing the snap-fit ​​component 125, it can be positioned and engaged with the side of the electrical connecting piece 11 away from the connector 121, such as the lower end face of the electrical connecting piece 11. This means the snap-fit ​​component 125 can abut against the lower end face of the electrical connecting piece 11, reducing the possibility of the connector 122 dislodging from the electrical connecting piece 11 when the high-voltage box 100 is subjected to external vibration. It should be noted that after the sampling terminal 12 is inserted into the electrical connecting piece 11, the snap-fit ​​component 125 may not be positioned and engaged with the side of the electrical connecting piece 11 away from the connector 121, meaning there may be a gap between the snap-fit ​​component 125 and the side of the electrical connecting piece 11 away from the connector 121.

[0117] Furthermore, after the sampling terminal 12 is inserted into the electrical connection piece 11, the snap-fit ​​member 125 abuts against the electrical connection piece 11. In this way, the snap-fit ​​member 125 can engage with the electrical connection piece 11 to prevent loosening and relative displacement when the high-voltage box 100 is subjected to external vibration.

[0118] In some embodiments, the snap-fit ​​element 125 is a resilient snap-fit. Thus, when the sampling terminal 12 is assembled with the electrical connector 11, the resilient snap-fit ​​passes through the insertion channel 11a and then resets, allowing it to engage with the electrical connector 11 for a limiting fit. Furthermore, the snap-fit's reset and collision with the electrical connector 11 produce a "click" sound, indicating proper insertion, facilitating confirmation of correct insertion during assembly. For example, the "click" sound can be used to control the stopping of the insertion process between the sampling terminal 12 and the electrical connector 11.

[0119] In other embodiments, the snap-fit ​​member 125 is a protrusion. When the sampling terminal 12 is assembled with the electrical connector 11, after the protrusion passes through the insertion channel 11a, the protrusion deforms and returns to its original position, and the protrusion can be positioned and engaged with the electrical connector 11. The shape of the protrusion is not limited, and it can be, for example, dot-shaped, block-shaped, strip-shaped, irregularly shaped, etc.

[0120] The number of snap-fit ​​pieces 125 can be set to one, two, or more as needed. In some embodiments, there is only one snap-fit ​​piece 125. When there is only one snap-fit ​​piece 125, the length of the snap-fit ​​piece 125 along the circumference of the main body 1221 can be designed according to the limiting requirements to improve the limiting engagement effect between the snap-fit ​​piece 125 and the electrical connecting piece 11, and reduce the possibility that the limiting engagement area between the snap-fit ​​piece 125 and the electrical connecting piece 11 is too small, which may affect the limiting effect.

[0121] In some embodiments, there are at least two snap-fit ​​pieces 125, which are spaced apart and connected to the periphery of the main body 1221. This can improve the uniformity of the limiting fit between the snap-fit ​​pieces 125 and the electrical connection piece 11, and improve the limiting fit effect.

[0122] In some embodiments, please refer to Figure 9 The connector 122 also includes a guide portion 1223, which is connected to the main body 1221 and located at the end of the main body 1221 away from the connector 121.

[0123] The guide part 1223 can guide the relative insertion movement of the sampling terminal 12 and the electrical connection piece 11, so as to facilitate the insertion of the connector 122 into the insertion channel 11a.

[0124] As an example, the outer diameter of the guide portion 1223 gradually decreases from the end closer to the connector 121 toward the end farther away from the connector 121.

[0125] Furthermore, the outer surface of the guide portion 1223 is curved, which can further reduce the difficulty of insertion.

[0126] In some embodiments, the sampling terminal 12 is a one-piece molded part, which can improve the overall structural strength of the sampling terminal 12, reduce manufacturing steps, and simplify the production process.

[0127] In some embodiments, the connector 121 is an arc-shaped member; the plug-in member 122 is a tubular member connected to the arc-shaped member, and the tubular member has a splice seam 122a. The tubular member can be in a disconnected state or a connected state at the splice seam 122a.

[0128] In other words, the sampling terminal 12 is constructed as a wound structure, which includes an arc-shaped part and a tubular part. The sampling terminal 12 can be formed by stamping and winding a sheet-like substrate. One part of the substrate is wound into an arc-shaped part, and another part of the substrate is wound into a tubular part. The part that is joined together after being enclosed forms a splice seam 122a.

[0129] In some embodiments, both the elastic part 1222 and the snap-fit ​​part 125 are formed by blanking from the base material of the main body 1221. Blanking is a stamping process that uses a die to separate sheet metal along a closed or open contour line on a press. It includes processes such as blanking, punching, and trimming, and can directly produce planar parts or prepare materials for other stamping processes. Blanking is beneficial for mass production, and can reduce the number of parts, improve production efficiency, and reduce manufacturing costs.

[0130] Understandably, during manufacturing, in order to facilitate the formation of the elastic part 1222 and the snap-fit ​​part 125, the substrate can be first punched to form the elastic part 1222 and the snap-fit ​​part 125, and then wound to form the arc-shaped part and the tubular part.

[0131] In some embodiments, the elastic part 1222 is a spring sheet structure. The spring sheet structure has better rebound force. For example, when the snap-fit ​​member 125 is a spring sheet structure, it is beneficial for the snap-fit ​​member 125 to be reset after passing through the insertion channel 11a and to cooperate with the electrical connection piece 11 for limiting.

[0132] In some embodiments, the elastic part 1222 is a spring arm structure. The spring arm structure has good toughness and resistance to bending fatigue. For example, when the elastic part 1222 is a spring arm structure, when the insertion channel 11a exerts a clamping force on the elastic part 1222, setting the elastic part 1222 as a spring arm structure is beneficial to ensure that the insertion channel 11a continuously exerts a clamping force on the elastic part 1222.

[0133] In some embodiments, the elastic portion 1222 and the snap-fit ​​member 125 are both spring sheet structures or spring arm structures formed by punching the base material of the main body 1221. The tubular member has a first punched opening 122b and a second punched opening 122c. The elastic portion 1222 is located at the first punched opening 122b, and the snap-fit ​​member 125 is located at the second punched opening 122c. The elastic portion 1222 can be a spring sheet structure or a spring arm structure, and the tubular member can be a spring sheet structure or a spring arm structure. For example, both the elastic portion 1222 and the tubular member are spring sheet structures; or, the elastic portion 1222 is a spring sheet structure, and the tubular member is a spring arm structure; or, both the elastic portion 1222 and the tubular member are spring arm structures; or, the elastic portion 1222 is a spring arm structure, and the tubular member is a spring sheet structure.

[0134] The elastic part 1222 and the snap-fit ​​part 125 are formed by punching the base material of the main body part 1221, which can reduce manufacturing processes, save materials, improve the overall structural integrity, and improve production efficiency.

[0135] The spring-loaded structure has one end connected to the substrate and the other end suspended. The spring-loaded structure has good resilience. For example, when the snap-fit ​​125 is a spring-loaded structure, it is beneficial for the snap-fit ​​125 to return to its original position after passing through the insertion channel 11a and to engage with the electrical connection piece 11.

[0136] Furthermore, the snap-fit ​​125 is a spring-shaped structure formed by punching the base material of the main body 1221. One end of the snap-fit ​​125 is connected to the main body 1221, and the other end of the snap-fit ​​125 is a free end. When the snap-fit ​​125 passes through the insertion channel 11a, the free end can be reset and cooperate with the electrical connection piece 11 for limiting.

[0137] The elastic arm structure is connected to the substrate at both ends and disconnected from the substrate on both sides in the middle. The elastic arm structure has good toughness and resistance to bending fatigue. For example, when the elastic part 1222 is an elastic arm structure, the insertion channel 11a exerts a clamping force on the elastic part 1222. Setting the elastic part 1222 as an elastic arm structure is beneficial to ensure that the insertion channel 11a continuously exerts a clamping force on the elastic part 1222.

[0138] In some embodiments, the tubular component is welded or bonded along the splice seam 122a. This seals the splice seam 122a, improving the structural strength and reliability of the tubular component, i.e., the connector 122, reducing the possibility of deformation of the connector 122 along the splice seam 122a during sampling, and improving sampling accuracy.

[0139] In some embodiments, please refer to Figures 3 to 9The battery device 200 includes a battery cell 220 and a high-voltage box 100, which is electrically connected to the battery cell 220. The high-voltage box 100 includes a sampling component 10 and a circuit board 20, which is a PCB board. The sampling component 10 includes an electrical connection piece 11 and a sampling terminal 12, and the electrical connection piece 11 is a metal sheet. The electrical connector 11 has a plug-in channel 11a, which is a through hole and is generally cylindrical. The sampling terminal 12 is an integrally molded part, including a connector 121 and a plug 122 connected to each other. The sampling terminal 12 also includes a conductive plating layer, the conductivity of which is greater than that of the plug 122. The connector 121 is connected to the circuit board 20, and the plug 122 is at least partially inserted into the plug-in channel 11a. The plug 122 includes a main body 1221 and an elastic part 1222. The main body 1221 is connected to the connector 121. The elastic part 1222 is a sheet-like spring arm structure, which can deform to allow the plug 122 to be interference-fitted with the plug channel 11a. Four elastic portions 1222 are spaced apart and connected to the periphery of the main body portion 1221. Each elastic portion 1222 protrudes from the main body portion 1221 along a first direction, at least partially located in the insertion channel 11a, and abuts against the electrical connector 11; wherein the first direction intersects the insertion direction X. The main body portion 1221 includes a first main body segment 1201 and a second main body segment 1202. One end of the first main body segment 1201 is connected to the connector 121; the second main body segment 1202 is connected to the other end of the first main body segment 1201, and the elastic portion 1222 is located in the middle of the second main body segment 1202, with the portion of the second main body segment 1202 protruding in the first direction at the location of the elastic portion 1222. The cross-sectional area of ​​the first main body segment 1201 perpendicular to the axial direction of the first main body segment 1201 is greater than the cross-sectional area of ​​the second main body segment 1202 perpendicular to the axial direction of the second main body segment 1202; the cross-sectional area of ​​the first main body segment 1201 perpendicular to the axial direction of the first main body segment 1201 is greater than the cross-sectional area of ​​the connector 121 perpendicular to the axial direction of the connector 121. The sampling terminal 12 also includes a snap-fit ​​member 125, which is an elastic snap-fit ​​with a spring-loaded structure. The snap-fit ​​member 125 is disposed on the main body portion 1221 and protrudes from the main body portion 1221 along the first direction. There are two snap-fit ​​members 125, which are spaced apart and connected to the periphery of the main body portion 1221. The snap-fit ​​member 125 is located on the side of the elastic portion 1222 away from the connector 121. The snap-fit ​​member 125 can deform so that it can pass through the insertion channel 11a and snap onto the side of the electrical connector 11 away from the circuit board 20. The connector 121 is an arc-shaped part, and the plug-in part 122 is a tubular part. The tubular part is connected to the arc-shaped part, and the tubular part has a splice seam 122a. The tubular part is welded along the splice seam 122a.

[0140] The high-voltage box 100 provided in this embodiment connects the sampling terminal 12 to the electrical connecting piece 11 via a plug-in connection. By providing a plug-in channel 11a in the electrical connecting piece 11, the plug 122 of the sampling terminal 12 is inserted into the plug-in channel 11a. This connection method is convenient and quick to install, facilitating rapid assembly of the sampling terminal 12 and the electrical connecting piece 11, reducing assembly steps and improving assembly efficiency. Simultaneously, the deformable portion of the plug 122 is interference-fitted with the plug-in channel 11a, allowing the plug-in channel 11a to exert a clamping force on the plug 122. The plug-in channel 11a limits and fixes the plug 122, reducing the possibility of the sampling terminal 12 falling out of the plug-in channel 11a, improving the connection reliability between the sampling terminal 12 and the electrical connecting piece 11, and enhancing the sampling stability during the sampling process. Compared to the welding or fastener connection methods used in related technologies, the high-voltage box 100 provided in this application can omit welding and bolt tightening steps, reduce assembly steps, improve assembly efficiency, save labor costs, reduce sampling failures caused by improper operation, and improve connection strength and signal transmission stability. The sampling terminal 12 is a one-piece molded part, which can improve the overall structural strength of the sampling terminal 12, reduce manufacturing steps, and simplify the production process. The conductive plating layer can improve the conductivity of the sampling terminal 12. The elastic part 1222 is located in the middle of the second main body section 1202. Only the elastic part 1222 located in the middle has an interference fit with the insertion channel 11a, which can reduce the fit length between the insertion part 122 and the insertion channel 11a along the insertion direction X, reduce the insertion difficulty, and the elastic part 1222 is located in the middle of the second main body section 1202, which facilitates the setting of other structures, such as the snap-fit ​​part 125 and the guide part 1223, at the end of the second main body section 1202 away from the first main body section 1201. The second main body segment 1202 protrudes in the first direction at the portion of the elastic part 1222, which increases the elastic tension of the elastic part 1222 relative to the first main body segment 1221, increases the force between the elastic part 1222 and the insertion channel 11a, and improves the connection strength between the elastic part 1222 and the insertion channel 11a. The elastic part 1222 has a spring-arm structure; when the insertion channel 11a exerts a pressing force on the elastic part 1222, the spring-arm structure of the elastic part 1222 helps to ensure that the insertion channel 11a maintains a continuous pressing force on the elastic part 1222. There are four elastic parts 1222, spaced apart and connected to the periphery of the main body segment 1221, allowing the insertion channel 11a to apply force to the elastic part 1222 along the circumference of the main body segment. This improves the uniformity of the force exerted by the insertion channel 11a on the elastic part 1222, enhances the interference fit effect, and improves the connection strength between the elastic part 1222 and the insertion channel 11a. The snap-fit ​​125 can be engaged with the side of the electrical connector 11 away from the connector 121, such as the lower end face of the electrical connector 11, to reduce the possibility that the plug 122 will come off the electrical connector 11 when the high voltage box 100 is subjected to external vibration.The snap-fit ​​component 125 is an elastic snap-fit. During assembly of the sampling terminal 12 and the electrical connection piece 11, the elastic snap-fit ​​passes through the insertion channel 11a and then resets, allowing for a limiting engagement with the electrical connection piece 11. The snap-fit's reset and collision with the electrical connection piece 11 produce a "click" sound, indicating proper insertion, facilitating accurate alignment during assembly. Two snap-fit ​​components 125 are spaced apart on the periphery of the main body 1221, improving the uniformity of the limiting engagement between the snap-fit ​​component 125 and the electrical connection piece 11, thus enhancing the effectiveness of the limiting engagement. The snap-fit ​​component 125 has a spring-loaded structure, which facilitates its reset after passing through the insertion channel 11a and its limiting engagement with the electrical connection piece 11. The tubular component is welded along the splice seam 122a, which can seal the splice seam 122a, improve the structural strength and structural reliability of the tubular component, i.e. the connector 122, reduce the possibility of the connector 122 deforming along the splice seam 122a during the sampling process, and improve the sampling accuracy.

[0141] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery device, characterized by, The battery cell and a high-voltage box electrically connected with the battery cell, the high-voltage box comprising a circuit board and a sampling assembly, the sampling assembly comprising: An electrically connecting sheet having a plug-in channel; A sampling terminal comprising a connecting piece and a plug-in piece connected with each other, the connecting piece being connected with the circuit board, and the plug-in piece being at least partially inserted into the plug-in channel; At least a part of the plug-in piece is capable of being deformed to make the plug-in piece and the plug-in channel in interference fit; The plug-in piece comprises: A main body part connected with the connecting piece; An elastic part provided on the main body part and protruding from the main body part in a first direction, at least partially located in the plug-in channel and abutting against the electrically connecting sheet; the elastic part is a spring arm structure, and both ends of the elastic part in a plug-in direction are connected with the main body part; The first direction intersects with the plug-in direction.

2. The battery device according to claim 1, characterized by The main body part comprises: A first main body segment having one end connected with the connecting piece; A second main body segment connected with the other end of the first main body segment, and the elastic part is located in the second main body segment.

3. The battery device of claim 2, wherein The cross-sectional area of the first main body segment perpendicular to the axial direction of the first main body segment is greater than the cross-sectional area of the connecting piece perpendicular to the axial direction of the connecting piece; and / or The cross-sectional area of the first main body segment perpendicular to the axial direction of the first main body segment is greater than the cross-sectional area of the second main body segment perpendicular to the axial direction of the second main body segment.

4. The battery device of claim 2, wherein The elastic part is located in the middle of the second main body segment; or The elastic part is located at one end of the second main body segment away from the first main body segment.

5. The battery device of claim 2, wherein The second main body segment protrudes in the first direction at the part where the elastic part is located.

6. The battery device of claim 1, wherein The elastic part is one; or The elastic part is at least two, and is connected with the circumferential side of the main body part at intervals.

7. The battery device of claim 1, wherein The sampling terminal further comprises: A clamping piece provided on the main body part and protruding from the main body part in the first direction, the clamping piece being located on the side of the elastic part away from the connecting piece; The clamping piece is capable of being deformed to enable the clamping piece to be inserted into the plug-in channel and clamped on the side of the electrically connecting sheet away from the circuit board.

8. The battery device of claim 7, wherein, The clamping piece is a spring buckle or a protruding part.

9. The battery device of claim 7, wherein, The clamping piece is one; or The clamping piece is at least two, and is connected with the circumferential side of the main body part at intervals.

10. The battery device of claim 1, wherein, The plug-in piece further comprises: A guide part connected with the main body part and located at one end of the main body part away from the connecting piece.

11. The battery device of claim 7, wherein, The connecting piece is an arc-shaped piece; the plug-in piece is a tubular piece, the tubular piece is connected with the arc-shaped piece, and the tubular piece has a splicing seam.

12. The battery device of claim 7, wherein, The elastic part and the clamping piece are both spring arm structures formed by blanking the base material of the main body part.

13. The battery device of claim 11, wherein, The elastic part and the clamping piece are both spring arm structures formed by blanking the base material of the main body part, the tubular piece has a first blanking opening and a second blanking opening, the elastic part is located in the first blanking opening, and the clamping piece is located in the second blanking opening.

14. The battery device of claim 11, wherein, The tubular piece is welded or bonded along the splicing seam.

15. The battery device according to any one of claims 1 to 10, wherein The sampling terminal is an integrally formed piece.

16. The battery device according to any one of claims 1 to 14, wherein The sampling terminal further comprises: A conductive plating layer covering at least the part where the plug-in piece and the plug-in channel are in interference fit.

17. A high pressure cell characterized by, The high-voltage box comprises a circuit board and a sampling assembly, the sampling assembly comprising: an electric connecting sheet having a plug channel; a sampling terminal comprising a connecting piece and a plug piece connected to each other, the connecting piece being connected to the circuit board, and the plug piece being at least partially inserted into the plug channel; wherein at least a part of the plug piece is capable of being deformed to make the plug piece and the plug channel fit together with interference.

18. An electrical device, characterized by comprising: the battery device of any one of claims 1 to 16, for storing or providing electric energy; or, the high-voltage box of claim 17.

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