Battery device and electric device

Abstract

The utility model discloses a battery device and an electric device. The battery device comprises a battery box, and at least one battery monomer and a sampling assembly which are arranged in the battery box. The sampling assembly comprises a circuit board and a connector arranged on the supporting plate, and the circuit board is used for being electrically connected with the battery monomers. The connector comprises a shell, a supporting plate and a connecting terminal, the circuit board is electrically connected with the connecting terminal and erected on the supporting plate, and the supporting plate and the shell are integrally formed. The supporting plate can increase the tensile strength of the joint of the circuit board and the connecting terminal of the connector, prevents the connection between the circuit board and the connecting terminal from loosening under the action of external force, improves the working reliability of the sampling assembly, and further improves the working reliability of the battery device. The supporting plate and the shell are integrally formed, so that a supporting plate does not need to be additionally arranged when the connector and the circuit board are connected, the assembly process is simplified, and the assembly cost and the maintenance cost are reduced.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a battery device and an electrical device. Background Art

[0002] Batteries are widely used in the field of new energy, and electric vehicles have become a new development trend in the automotive industry. As the power source of electric vehicles, batteries are the core components of electric vehicles.

[0003] In order to facilitate battery management, it is necessary to collect information such as voltage and temperature of each battery cell in the battery through a sampling component. Therefore, the working reliability of the sampling component is crucial to battery management. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device to improve the working reliability of the battery device.

[0005] In a first aspect, the present application provides a battery device comprising a battery box, at least one battery cell disposed within the battery box, and a sampling assembly. The sampling assembly comprises a circuit board and a connector, the circuit board being electrically connected to the at least one battery cell. The connector comprises a housing, a support plate, and connection terminals disposed on the support plate. The circuit board is electrically connected to the connection terminals and is mounted on the support plate, with the support plate being integrally formed with the housing.

[0006] The support plate increases the tensile strength of the connection between the circuit board and the connector terminals, preventing the connection between the circuit board and the connector terminals from loosening due to external forces, thereby improving the operational reliability of the sampling assembly and, consequently, the battery device. Furthermore, the support plate is integrally formed with the housing, i.e., by integrating the support plate with the connector, eliminating the need for a separate support plate when connecting the connector and the circuit board. This simplifies the assembly process, reduces assembly and maintenance costs, and improves the operational reliability of the sampling assembly.

[0007] In some embodiments, the support plate and the housing are injection molded.

[0008] The support plate is integrally formed at the first end of the shell by injection molding, which has simple process, high production efficiency and strong reliability.

[0009] In some embodiments, the connector further includes a first positioning structure provided on the support plate and a second positioning structure provided on the circuit board, and the positions of the first positioning structure and the second positioning structure correspond to and cooperate with each other.

[0010] By setting up a positioning structure, the risk of deviation and misalignment between the circuit board and the support plate can be reduced, and the phenomenon of misalignment when the circuit board and the connector are connected can be reduced, so that the circuit board and the support plate are in a better alignment state, which is beneficial to improving the connection reliability of the electrical connection between the circuit board and the connecting terminal, and improving the structural stability after the circuit board and the support plate are connected.

[0011] In some embodiments, one of the first positioning structure and the second positioning structure includes a positioning protrusion, and the other of the first positioning structure and the second positioning structure includes a positioning hole, and the positioning protrusion and the positioning hole are in concave-convex fit.

[0012] This solution can quickly and accurately locate the positions of the circuit board and the connector, and increase the tensile strength of the circuit board and the connector.

[0013] In some embodiments, ends of the connecting terminals penetrate through the support plate in a thickness direction of the support plate to form terminal pins, and the terminal pins are electrically connected to the circuit board.

[0014] The support plate can stabilize the connecting terminal and improve the structural stability of the connecting terminal.

[0015] In some embodiments, the connector includes a plurality of connecting terminals so that a plurality of terminal pins are distributed on the support plate, and the plurality of terminal pins form at least two terminal pin groups spaced apart in a first direction, and each terminal pin group includes at least two terminal pins spaced apart in a second direction, and the first direction and the second direction are perpendicular to each other.

[0016] Multiple terminal pins are arranged in multiple rows on the support plate. Compared to the traditional single-row arrangement of terminal pins, this approach allows for increased spacing between adjacent terminal pins within a limited space (i.e., the width of the circuit board) while ensuring the number of terminal pins remains unchanged. This increases the creepage distance between adjacent terminal pins, making the sampling assembly suitable for high-voltage applications. Furthermore, increasing the creepage distance between adjacent terminal pins in this manner eliminates the need to increase the width of the circuit board, thereby saving material costs. Furthermore, it eliminates the need to reduce the number of terminal pins, thus ensuring the sampling assembly's signal transmission capability.

[0017] In some embodiments, the terminal pins of at least two terminal pin groups are staggered in the second direction.

[0018] The advantage of this setting is that it can not only increase the creepage distance between adjacent terminal pins in a terminal pin group, but also increase the creepage distance between terminal pins between two terminal pin groups, further improving the applicability of the sampling component in high-voltage scenarios.

[0019] In some embodiments, the support plate includes insulating material, and two adjacent terminal pins are isolated from each other by the support plate.

[0020] The gaps between the terminal pins are filled with insulating material, or in other words, adjacent terminal pins are isolated. The support plate itself forms an insulating barrier between the terminal pins, which can effectively block the current between adjacent terminal pins, reduce arc discharge or short circuit caused by potential difference, ensure the electrical performance of the sampling component, improve the safety and reliability of the sampling component, and also reduce the risk of the terminal pins being deformed by direct external force, resulting in a smaller distance between adjacent terminal pins.

[0021] In some embodiments, the terminal pins are connected to the circuit board by soldering.

[0022] Through welding connection, electrical connection can be achieved and stability after connection can be guaranteed.

[0023] In some embodiments, the terminal pins are welded to the circuit board by through-hole welding and / or bonding welding.

[0024] When using through-hole soldering, holes are drilled in the circuit board to allow the terminal pins to pass through the board before being soldered to the board, creating a physical anchoring structure that can withstand high-intensity mechanical stress (such as vehicle vibration and equipment drops). When using bonded soldering, the terminal pins are directly attached to the surface of the circuit board and soldered, eliminating the need for drilling. This simplifies the soldering process and reduces production costs. Using both soldering methods simultaneously can combine the advantages of both methods.

[0025] In some embodiments, the connector includes multiple connecting terminals so that multiple terminal pins are distributed on the support plate, wherein the multiple terminal pins include a first terminal pin, the first terminal pin extends in the thickness direction of the support plate, and the part of the first terminal pin passing through the support plate is welded to the circuit board by through-hole welding; and / or, the multiple terminal pins include a second terminal pin, the second terminal pin extends along the first direction, and the part of the second terminal pin passes through the support plate in the thickness direction of the support plate, and the part of the second terminal pin passing through the support plate is welded to the circuit board by fitting welding.

[0026] The first terminal pin has an extension in the thickness direction of the support plate, which facilitates through-hole welding; the second terminal pin extends in the first direction, which can increase the area of ​​the second terminal pin and the circuit board for bonding welding, which is beneficial for bonding welding and improves the stability after welding. Moreover, the extension of the second terminal pin in the first direction is also beneficial to reduce the space occupied by the terminal pin in the second direction, thereby increasing the number of terminal pins in a limited area and improving the ability of the connector to transmit information.

[0027] A second aspect of the present application provides an electrical device, comprising the battery device as described above, and the battery device is used to provide electrical energy.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0030] Figure 1 It is a schematic structural diagram of a vehicle in some embodiments of the present application.

[0031] Figure 2 Schematic diagram of the structure of the battery device of some embodiments of the present application.

[0032] Figure 3 This is a schematic diagram of the structure of the connection between the sampling component and the battery module in some embodiments of the present application.

[0033] Figure 4 It is a schematic diagram of the structure of the sampling component of some embodiments of the present application.

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the connector of the sampling assembly in some embodiments of the present application.

[0035] Figure 6 This is a schematic diagram of the top view of the connector in some embodiments of the present application.

[0036] Figure 7 This is a schematic diagram of the top view of the circuit board in some embodiments of the present application.

[0037] Figure 8 This is a schematic diagram of the structure after the circuit board and connector are connected in some embodiments of the present application.

[0038] Figure 9 yes Figure 8 A partial cross-sectional structural diagram of the connection between the connecting terminal and the circuit board.

[0039] Figure 10 It is a schematic cross-sectional structural diagram of the sampling assembly of some embodiments of the present application.

[0040] Figure 11 It is a schematic structural diagram of the connection terminal (bonding welding connection terminal) of some embodiments of the present application.

[0041] Figure 12It is a schematic diagram of the three-dimensional structure of a connector with through-hole welding connection terminals in some embodiments of the present application.

[0042] Figure 13 yes Figure 12 A schematic diagram of the three-dimensional structure of the connector from another angle is shown.

[0043] Figure 14 yes Figure 13 The connector shown is connected to the circuit board to form a three-dimensional structural diagram of the sampling component.

[0044] Figure 15 yes Figure 14 The schematic diagram of the side view of the sampling component is shown.

[0045] Figure 16 yes Figure 14 Schematic diagram of the cross-sectional structure of the sampling component shown.

[0046] Figure 17 Schematic diagram of a connector having both through-hole solder connection terminals and bonded solder connection terminals according to some embodiments of the present application.

[0047] Figure 18 It is a schematic cross-sectional structural diagram of the sampling assembly of some embodiments of the present application.

[0048] Figure 19 Schematic diagram of a connector with two aligned terminal pin groups according to some embodiments of the present application.

[0049] Figure 20 Schematic diagram of a connector with three terminal pin groups staggered with each other according to some embodiments of the present application.

[0050] The accompanying drawings are numbered as follows: 1000, battery device; 100, battery module; 200, battery box; 210, lower box body; 220, upper box body; A, battery cell; 2000, vehicle; 1, circuit board; 11, circuit board body; 12, sampling end; 2, connector; 21, shell; 22, support plate; 23, first positioning structure; 24, connecting terminal; 241, terminal foot; 25, second positioning structure; 24a, through-hole welding connecting terminal; 24a1, first extension section; 24a2, second extension section; 24b, bonding welding connecting terminal; 24b1, first straight extension section; 24b2, inclined extension section; 24b3, third straight extension section; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0052] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0053] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0055] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0056] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0057] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0058] Currently, market developments indicate that power batteries are becoming increasingly widely used. Power batteries are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in aerospace and other fields. As power battery applications continue to expand, market demand is also growing.

[0059] During battery use, the sampling assembly collects information such as voltage and temperature from each battery cell to achieve effective battery management. The sampling assembly includes a circuit board and a connector connected to the circuit board. The circuit board is electrically connected to each battery cell to collect information, and the connector is electrically connected to the circuit board to transmit the collected information to the battery management system. A loose connection between the connector and the circuit board can seriously affect the real-time transmission of information. Therefore, the reliability of the connection between the connector and the circuit board is crucial to the operational reliability of the sampling assembly.

[0060] Based on the above considerations, an embodiment of the present application provides a battery device, which includes a battery box, at least one battery cell arranged in the battery box, and a sampling assembly. The sampling assembly includes a circuit board and a connector. The connector includes a support plate. The circuit board is connected to the connecting terminal of the connector and the circuit board is overlapped on the support plate, thereby increasing the tensile strength of the connection between the circuit board and the connecting terminal of the connector, preventing the connection between the circuit board and the connecting terminal from loosening due to external force, thereby improving the working reliability of the sampling assembly.

[0061] An embodiment of the present application further provides a battery comprising a battery module and the above-mentioned sampling assembly, wherein a circuit board of the sampling assembly is electrically connected to each battery cell of the battery module.

[0062] The present application also provides an electrical device comprising the aforementioned battery. The electrical device may be a mobile device such as a vehicle, a ship, or a small aircraft. For example, the vehicle in the present application may be a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle.

[0063] For the convenience of explanation, an electric device according to an embodiment of the present application is described as a vehicle. Figure 1 , Figure 1 A vehicle 2000 is shown using a battery device 1000 as a power source. Battery device 1000 is disposed within vehicle 2000. A drive motor is provided within vehicle 2000, electrically connected to battery device 1000. Battery device 1000 provides electrical energy to the drive motor, which is then connected to the wheels via a transmission mechanism to propel the vehicle forward. Specifically, battery device 1000 can be disposed horizontally at the bottom of vehicle 2000.

[0064] The battery device 1000 of the embodiment of the present application includes at least one battery module 100. Specifically in this embodiment, Figure 2 As shown, the battery device 1000 of this embodiment includes a battery module 100 and a battery box 200 for accommodating the battery module 100. The battery box 200 has an accommodating cavity, and the battery module 100 is arranged in the accommodating cavity. Figure 2 In the illustrated embodiment, the battery case 200 includes a lower case 210 and an upper case 220 that cover each other. The upper case 220 and the lower case 210 together define a storage space for the battery module 100. Of course, in other embodiments, the battery assembly 1000 may also include a cover that covers the lower case 210. The cover may, for example, be a plate-shaped structure. Of course, the battery case 200 may have a variety of shapes, such as a rectangular parallelepiped or a cylinder.

[0065] The battery module 100 includes a plurality of battery cells A. The plurality of battery cells A can be connected in series, in parallel or in a mixed connection. Mixed connection means that the plurality of battery cells A are connected in series and in parallel. The plurality of battery cells A can be directly connected in series, in parallel or in a mixed connection, and then the whole composed of the plurality of battery cells A is accommodated in a battery box. Each battery cell A 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 thereto. The battery cell A can be in the shape of a cuboid, a cylinder, a prism or other shapes. For example, in Figure 3 In the figure, the battery cell A is a rectangular parallelepiped structure.

[0066] refer to Figures 3 to 5 Some embodiments of the present application provide a battery device including a battery box 200, at least one battery cell A disposed within the battery box 200, and a sampling assembly. The sampling assembly includes a circuit board 1 and a connector 2. The circuit board 1 is configured to electrically connect to the at least one battery cell A. The connector 2 includes a housing 21, a support plate 22, and connection terminals 24 disposed on the support plate 22. The circuit board 1 is mounted on the support plate 22 and electrically connected to the connection terminals 24. The support plate 22 is integrally formed with the housing 21.

[0067] refer to Figure 3 and Figure 4 The circuit board 1 of the sampling assembly of the present embodiment includes a circuit board body 11 and a plurality of sampling terminals 12 spaced apart along the extension direction of the circuit board body 11. The circuit board body 11 extends along the direction in which the plurality of battery cells A are arranged. The connector 2 is connected to the end of the circuit board body 11.

[0068] refer to Figure 5 The connector 2 includes a housing 21, a support plate 22 and a connection terminal 24. The support plate 22 and the housing 21 are integrally formed. Figure 8 In some embodiments, the housing 21 is a hollow structure with one end open. Its first end is closed and formed with a support plate 22, while its second end is open. The first end of the connection terminal 24 extends through the thickness of the support plate 22 to form a terminal pin 241 that is electrically connected to the circuit board 1. The second end of the connection terminal 24 is located within the cavity of the housing 21 and is used to connect to a battery management system (BMS). The BMS detects and samples the operating status, voltage, and charge / discharge operating temperature of the battery cells by connecting to the connection terminal 24 of the connector 2.

[0069] refer to Figures 8 to 10 The circuit board 1 is electrically connected to the connection terminals 24 (e.g., by welding), and the circuit board 1 is overlapped on the support plate 22. In this way, the support plate 22 provides support and stability for the circuit board 1. In the embodiment of the present application, the circuit board 1 is overlapped on the support plate 22. Specifically, the support plate 22 has two surfaces in the thickness direction. The terminal pins 241 of the connection terminals 24 are provided on one surface of the support plate 22. Therefore, the circuit board 1 is overlapped on the side of the support plate 22 where the terminal pins 241 are provided.

[0070] In some embodiments, the circuit board 1 may be a flexible printed circuit board (FPC).

[0071] The connector 2 of the sampling assembly of the embodiment of the present application includes a support plate 22. The circuit board 1 is connected to the connection terminal 24 of the connector 2 and overlaps the support plate 22. The support plate 22 can increase the tensile strength of the connection between the circuit board 1 and the connection terminal 24 of the connector 2, preventing the connection between the circuit board 1 and the connection terminal 24 from loosening under the action of external forces, thereby improving the operating reliability of the sampling assembly and, in turn, the operating reliability of the battery device. Furthermore, the support plate 22 of the embodiment of the present application is integrally formed with the housing 21, that is, by integrating the support plate 22 on the connector 2, there is no need to add a separate support plate when connecting the connector 2 and the circuit board 1, thereby simplifying the assembly process and reducing assembly costs and maintenance costs.

[0072] refer to Figure 5 The height of the housing 21 is aligned with the thickness of the support plate 22, and the support plate 22 is disposed in the middle of the first end of the housing 21. In some embodiments not shown in the figures, the support plate 22 is disposed at the end of the first end of the housing 21, or in other words, the support plate 22 is substantially flush with the upper or lower end surface of the housing 21. These arrangements of the support plate 22 can all improve the reliability of the sampling assembly and are not specifically limited.

[0073] In some embodiments, the support plate 22 and the housing 21 are formed by injection molding.

[0074] For example, a specific mold with a cavity can be manufactured, and then a plurality of connection terminals 24 can be fixed in the cavity of the mold. Then, the target material (which can be an insulating material) can be poured to form the shell 21 and the support plate 22 and wrap the connection terminals 24 at the same time, and finally a mold as shown in FIG. Figure 5 In the state shown, the end portion of the connecting terminal 24 is exposed on the surface of the support plate 22 to form a terminal pin 241 , and the remaining portion is buried inside the support plate 22 or hidden in the housing 21 .

[0075] The support plate 22 is integrally formed at the first end of the housing 21 by injection molding, which has a simple process, high production efficiency and strong reliability.

[0076] refer to Figure 6 and Figure 7 In some embodiments, the connector 2 further includes a first positioning structure 23 provided on the support plate 22 and a second positioning structure 25 provided on the circuit board 1. The first positioning structure 23 and the second positioning structure 25 correspond to each other and cooperate with each other.

[0077] refer to Figure 5 and 6 , the support plate 22 of the connector 2 is provided with a plurality of terminal pins 241, and the plurality of terminal pins 241 are used to connect with the circuit board 1, accordingly, reference Figure 7The end of the circuit board 1 is also provided with a plurality of connecting parts corresponding to the plurality of terminal pins 241. When connecting the circuit board 1 and the connector 2, it is necessary to make the positions of the plurality of terminal pins 241 and the plurality of connecting parts correspond one to one to achieve connection. Therefore, when connecting, the positions of the circuit board 1 and the support plate 22 need to be precisely controlled. In order to achieve this purpose, a first positioning structure 23 is provided on the support plate 22, and correspondingly, a second positioning structure 25 is provided on the circuit board 1. The positions of the first positioning structure 23 and the second positioning structure 25 correspond and cooperate with each other. In this way, when connecting, as long as the positions of the first positioning structure 23 and the second positioning structure 25 correspond and cooperate, the position correspondence between the entire circuit board 1 and the support plate 22 can be achieved, thereby making the positions of the plurality of terminal pins 241 and the plurality of connecting parts correspond, avoiding the low efficiency problem caused by repeated adjustment of the position of the circuit board during the production process.

[0078] Specifically, the surface of the support plate 22 used to mount the circuit board 1 is defined as the upper surface, and the surface of the support plate 22 opposite to the upper surface is defined as the lower surface. The first positioning structure 23 is provided on the upper surface of the support plate 22. Thus, when the circuit board 1 is mounted on the upper surface of the support plate 22, positioning can be achieved through the first positioning structure 23.

[0079] By setting up a positioning structure, the risk of deviation and misalignment between the circuit board 1 and the support plate 22 can be reduced, and the phenomenon of misalignment when the circuit board 1 and the connector 2 are connected can be reduced, so that the circuit board 1 and the support plate 22 are in a better alignment state, which is beneficial to improving the connection reliability of the electrical connection between the circuit board 1 and the connecting terminal 24, and improving the structural stability after the circuit board and the support plate 22 are connected.

[0080] refer to Figure 5 In some embodiments, one of the first positioning structure 23 and the second positioning structure 25 includes a positioning protrusion, and the other of the first positioning structure 23 and the second positioning structure 25 includes a positioning hole. The positioning protrusion and the positioning hole are matched in a concave-convex manner.

[0081] Specifically in Figure 5 In the illustrated embodiment, the first positioning structure 23 comprises a positioning protrusion, and the second positioning structure 25 comprises a positioning hole. The positioning protrusion protrudes relative to the upper surface of the support plate 22 along the thickness direction of the support plate 22, and the positioning hole penetrates the circuit board 1 along the thickness direction of the circuit board. The positioning protrusion penetrates the positioning hole to achieve a concave-convex fit. In other embodiments, the first positioning structure 23 may also comprise a positioning hole, and the second positioning structure 25 may comprise a positioning protrusion.

[0082] The positioning protrusions can be injection-molded onto the housing 21 along with the support plate 22. The positioning protrusions are positioned on the edge of the support plate 22 to minimize interference with the connecting terminals 24. Accordingly, positioning holes are positioned on the edge of the circuit board 1 to align with the positioning protrusions. This approach allows for quick and precise positioning of the circuit board 1 and connector 2, while also increasing the tensile strength of the two components.

[0083] In some embodiments, the positioning protrusion can also be set in the middle area of ​​the support plate 22 in the width direction of the support plate 22. Correspondingly, the positioning hole is also set in the middle area of ​​the circuit board 1 in the width direction of the circuit board 1 to adapt to the positioning protrusion.

[0084] In some embodiments, the number of positioning protrusions is configured to be multiple. For example, the first positioning structure 23 includes at least two positioning protrusions symmetrically arranged on the support plate 22. Accordingly, the second positioning structure 25 includes two positioning holes symmetrically arranged on the circuit board 1. This arrangement is more conducive to aligning the circuit board 1 with the support plate 22 and improving structural stability.

[0085] Furthermore, in some embodiments, the shape of the positioning protrusion can be configured as at least one of a circle, a cone, and an ellipse.

[0086] The circuit board 1 of the technical solution of the embodiment of the present application and the support plate 22 of the connector 2 are positioned by the concave-convex cooperation between the positioning protrusion and the positioning hole. During operation, accurate positioning can be achieved by simply inserting the positioning protrusion into the positioning hole, without the need for additional tools, thereby reducing the difficulty of operation.

[0087] refer to Figure 5 and Figure 12 In some embodiments, the end of the connecting terminal 24 passes through the support plate 22 in the thickness direction of the support plate 22 to form a terminal pin 241. The terminal pin 241 is electrically connected to the circuit board 1.

[0088] refer to Figure 11 The connecting terminal 24 is an elongated structure. The first end of the connecting terminal 24 extends through the thickness of the support plate 22 and forms a terminal pin 241 that is electrically connected to the circuit board 1. The second end of the connecting terminal 24 is located within the cavity of the housing 21 and is used to connect to the battery management system. In other words, the connecting terminal 24 passes through the end wall of the first end of the housing 21 and extends into the housing 21 for electrical connection to the battery management system. The end area of ​​the circuit board 1 is provided with a connection area for electrically connecting to the terminal pin 241 of the connecting terminal 24. This connection area is electrically connected to the terminal pin 241.

[0089] The end of the connecting terminal 24 in the embodiment of the present application passes through the support plate 22 in the thickness direction of the support plate 22 to form a terminal foot 241, so the support plate 22 can stabilize the connecting terminal 24 and improve the structural stability of the connecting terminal 24.

[0090] refer to Figure 5 、 Figure 6 、 Figure 11 In some embodiments, the connector 2 includes a plurality of connection terminals 24 such that a plurality of terminal pins 241 are distributed on the support plate 22. The plurality of terminal pins 241 form at least two terminal pin groups spaced apart in a first direction X, and each terminal pin group includes at least two terminal pins 241 spaced apart in a second direction Y. The first direction X and the second direction Y are perpendicular to each other.

[0091] refer to Figure 6 , a plurality of terminal pins 241 are distributed on the support plate 22, and the plurality of terminal pins 241 are formed into two terminal pin groups spaced apart in a first direction X, and each terminal pin group includes a plurality of terminal pins 241 spaced apart in a second direction Y. Each terminal pin group forms a row. Specifically, the first direction X is parallel to the length direction of the circuit board 1, and the second direction Y is parallel to the width direction of the circuit board 1. In other embodiments, reference Figure 20 The multiple terminal pins 241 distributed on the support plate 22 can also be formed into three or more terminal pin groups, that is, arranged in multiple rows.

[0092] It is worth noting that the terminal pin 241 refers to the part that connects the connecting terminal 24 to the circuit board 1. That is to say, as long as the part exposed on the outside of the support plate 22 forms the above-mentioned multi-row arrangement, it is not necessary to arrange the other parts of the connecting terminal 24, that is, the other sections except the terminal pin 241, into two groups in the first direction X. The advantage of such an arrangement is that the space can be fully utilized.

[0093] The multiple terminal pins 241 of the embodiment of the present application are arranged in multiple rows on the support plate 22. Compared with the traditional solution of arranging the terminal pins 241 in a single row, within a limited space (i.e., the width of the circuit board 1), while ensuring that the number of terminal pins 241 is not reduced, the spacing between adjacent terminal pins 241 in each row of terminal pins 241 can be increased, thereby increasing the creepage distance between adjacent terminal pins 241, making the sampling component suitable for high-voltage application scenarios. On the other hand, using this method to increase the creepage distance between adjacent terminal pins 241 does not require increasing the width of the circuit board 1, thereby saving material costs. It is also unnecessary to reduce the number of terminal pins 241, thereby ensuring the sampling component's ability to transmit signals.

[0094] refer to Figure 5In some embodiments, the terminal pins 241 of at least two terminal pin groups are staggered in the second direction Y.

[0095] Specifically, for example, in the second direction Y, the terminal pins 241 in each terminal pin group are sequentially called the first terminal pin, the second terminal pin to the Nth terminal pin, then the first terminal pin in the first terminal pin group and the first terminal pin in the second terminal pin group are in different positions in the second direction Y, and the remaining terminal pins 241 are also arranged in a staggered manner.

[0096] Optionally, in the second direction Y, the multiple terminal pins 241 in each terminal pin group are evenly spaced, the first terminal pin in the second terminal pin group is located at the center of the first terminal pin and the second terminal pin in the first terminal pin group, the second terminal pin in the second terminal pin group is located at the center of the second terminal pin and the third terminal pin in the first terminal pin group, and the remaining terminal pins 241 in the second terminal pin group are also arranged in this manner, which will not be repeated.

[0097] In this embodiment, the number of terminal pins 241 in the two terminal pin groups is different, and the terminal pins 241 in the two terminal pin groups are staggered in the second direction Y. The advantage of this arrangement is that it can not only increase the creepage distance between adjacent terminal pins 241 in a terminal pin group, but also increase the creepage distance between the terminal pins 241 between the two terminal pin groups, further improving the applicability of the sampling component in high-voltage scenarios.

[0098] refer to Figure 17 and 19 In other embodiments, the two terminal pin groups are aligned in the second direction Y. In this embodiment, the number of terminal pins 241 in the two terminal pin groups is the same and corresponds one to one in the second direction Y. This can increase the number of terminal pins 241 in the connector 2 while ensuring a larger creepage distance, thereby improving the information transmission capability of the connector 2.

[0099] In some embodiments, the support plate 22 comprises insulating material, and two adjacent terminal pins 241 are isolated from each other by the support plate 22 .

[0100] Specifically, polyamide fiber (i.e., nylon) can be selected as the manufacturing material of the support plate 22. By filling the gaps between the terminal pins 241 with insulating material, or in other words, isolating adjacent terminal pins 241, the support plate 22 itself forms an insulating barrier between the terminal pins 241, effectively blocking the current between adjacent terminal pins 241, reducing arc discharge or short circuits caused by potential differences, ensuring the electrical performance of the sampling assembly, and improving the safety and reliability of the sampling assembly. It also reduces the risk of the terminal pins 241 being deformed by direct external forces, resulting in a smaller spacing between adjacent terminal pins 241.

[0101] In some embodiments, the terminal pin 241 is connected to the circuit board 1 by welding.

[0102] Specifically, the connection area at the end of the circuit board 1 is configured as a welding area. The welding area is an exposed metallized area located at one end of the circuit board 1 near the support plate 22. The welding area is also commonly referred to as a pad. The welding area, or pad, is specifically used for soldering to the terminal pins 241. The welding connection between the circuit board 1 and the terminal pins 241 not only achieves an electrical connection but also ensures stability after the connection. Furthermore, for embodiments in which multiple terminal pins 241 are arranged in multiple rows, after the multiple terminal pins 241 are soldered to the circuit board 1, the welding stress can be further dispersed, improving the mechanical properties of the solder joints, reducing the risk of cracking of the circuit board 1, and reducing the risk of loosening of the solder area of ​​the circuit board 1.

[0103] In some embodiments, the terminal pins 241 are welded to the circuit board 1 by through-hole welding or by bonding welding. Alternatively, some of the terminal pins 241 are welded to the circuit board 1 by through-hole welding, and the rest of the terminal pins 241 are welded to the circuit board 1 by bonding welding.

[0104] Specifically, for example, all of the terminal pins 241 can be connected to the circuit board 1 using through-hole soldering. In this case, the circuit board 1 is provided with through-holes, allowing the terminal pins 241 to pass through the through-holes in the circuit board 1 and then be soldered to the circuit board 1, forming a physical anchoring structure that can withstand high-intensity mechanical stress (such as vehicle vibration or equipment drops). Alternatively, all of the terminal pins 241 can be soldered to the circuit board 1 using bonding soldering. In this case, the terminal pins 241 are directly attached to the surface of the circuit board 1 and soldered, eliminating the need for pre-drilling holes in the circuit board 1, resulting in lower production costs. Of course, it is also possible to use both soldering methods simultaneously, taking into account the advantages of both methods.

[0105] It is worth noting that when perforation welding is used, the creepage distance between adjacent terminal pins 241 is greater than when bonding welding is used. Regardless of the welding method, when multiple terminal pins 241 are arranged in multiple rows, when the sampling assembly is subjected to external force, the force area of ​​the solution with multiple rows of welding is dispersed compared to welding multiple terminal pins 241 concentrated in a single row, which can increase the tensile strength. In particular, when multiple terminal pins 241 are perforated, the force dispersion effect combined with the physical anchoring structure of the terminal pins 241 can further enhance the overall structural strength.

[0106] refer to Figures 12 to 15In some embodiments, the connector 2 includes a plurality of connecting terminals 24 so that a plurality of terminal pins 241 are distributed on the support plate 22, wherein the plurality of terminal pins 241 include a first terminal pin, the first terminal pin extends in the thickness direction of the support plate 22, and the portion of the first terminal pin that passes through the support plate 22 is welded to the circuit board 1 by through-hole welding.

[0107] Specifically, the first terminal pin is constructed as a slender rod-shaped structure, and the first terminal pin only needs to have an extension in the thickness direction of the support plate 22. In other words, the first terminal pin can pass through the support plate 22 vertically (parallel to the thickness direction of the support plate 22) or pass through the support plate 22 at an angle (at an angle to the thickness direction of the support plate 22) without specific restrictions, which facilitates through-hole welding.

[0108] refer to Figures 5 to 11 In some embodiments, the plurality of terminal pins 241 include a second terminal pin, which extends along the first direction X, and a portion of the second terminal pin passes through the support plate 22 in the thickness direction of the support plate 22, and the portion of the second terminal pin passing through the support plate 22 is welded to the circuit board 1 by bonding welding.

[0109] Specifically, the second terminal pin is constructed as a slender rod-shaped structure, and the second terminal pin extends in the first direction X, which can increase the area of ​​the second terminal pin and the circuit board 1 for bonding and welding, which is conducive to bonding welding and improves the stability after welding. In addition, extending the second terminal pin in the first direction X is also conducive to reducing the space occupied by the terminal pin 241 in the second direction Y, thereby increasing the number of terminal pins 241 in a limited area and improving the ability of the connector 2 to transmit information.

[0110] refer to Figure 17 and 18In some embodiments, the plurality of connection terminals 24 are respectively configured as through-hole welding connection terminals 24a and pasted welding connection terminals 24b. The terminal pin 241 of the through-hole welding connection terminal 24a is a first terminal pin, and the terminal pin 241 of the pasted welding connection terminal 24b is a second terminal pin. The through-hole welding connection terminal 24a includes a first extension section 24a1 and a second extension section 24a2 (the second extension section 24a2 is the first terminal pin) connected in sequence. The first extension section 24a1 and the second extension section 24a2 are slender rod-shaped structures. The first extension section 24a1 extends from the inside of the shell 21 along the first direction X through the end wall of the first end of the shell 21. The second extension section 24a2 is arranged on the outside of the shell 21 and extends from the end of the first extension section 24a1 perpendicularly to the support plate 22 and out of the support plate 22. The bonding welding terminal includes a first straight extension section 24b1, an inclined extension section 24b2 and a third straight extension section 24b3 (the third straight extension section 24b3 is the second terminal foot) connected in sequence. The first straight extension section 24b1, the inclined extension section 24b2 and the third straight extension section 24b3 are slender rod-like structures. The first straight extension section 24b1 extends from the inside of the shell 21 along the first direction X to the end wall of the first end of the shell 21. The inclined extension section 24b2 extends obliquely from the end of the first straight extension section 24b1 relative to the support plate 22, passes through the end wall of the first end of the shell 21 and extends into the support plate 22. The third straight extension section 24b3 extends from the end of the inclined extension section 24b2 along the first direction X, and the surface of the third straight extension section 24b3 is exposed from the surface of the support plate 22.

[0111] The present application further provides an electrical device, comprising the battery device 1000 as described above. The battery device 1000 is used to provide electrical energy.

[0112] The following combination Figures 3 to 11 A specific embodiment of the present application is introduced.

[0113] The battery pack 1000 includes a battery case 200, a plurality of battery cells A disposed within the battery case 200, and a sampling assembly. The sampling assembly includes a circuit board 1 and a connector 2. The circuit board 1 is arranged longitudinally along a first direction X and widthwise along a second direction Y. The circuit board 1 includes a circuit board body 11 and a plurality of sampling terminals 12 extending outward from the circuit board body 11 in the second direction Y. The sampling terminals 12 are spaced apart on the circuit board body 11 and are each configured to electrically connect to the plurality of battery cells A in the battery pack.

[0114] The connector 2 includes a housing 21, a support plate 22, and multiple connection terminals 24. The housing 21 has a closed first end and an open second end. The connection terminals 24 are located at the first end of the housing 21, and the second end of the housing 21 is electrically connected to the battery management system. The support plate 22 is located in the middle of the end wall of the first end of the housing 21. The support plate 22 is provided with positioning protrusions, and the circuit board 1 has corresponding positioning holes. The circuit board 1 is mounted on the support plate 22, and the positioning protrusions penetrate the positioning holes.

[0115] The multiple connection terminals 24 form a plurality of terminal pins 241 on the support plate 22. The plurality of terminal pins 241 pass through the support plate 22 in the thickness direction and are soldered to the circuit board. The plurality of terminal pins 241 are formed into at least two terminal pin groups spaced apart in a first direction X, and each terminal pin group includes at least two terminal pins 241 spaced apart in a second direction Y. The first direction X, the second direction Y, and the thickness direction of the support plate 22 are perpendicular to each other.

[0116] A soldering area is provided at the end of the circuit board 1. The connecting terminal 24 includes a first straight extension section 24b1, an inclined extension section 24b2, and a third straight extension section 24b3 (the third straight extension section 24b3 is the terminal pin 241), which are connected in sequence. The first straight extension section 24b1, the inclined extension section 24b2, and the third straight extension section 24b3 are elongated rod-shaped structures. The first straight extension section 24b1 extends from the interior of the housing 21 along the first direction X to the end wall of the first end of the housing 21. The inclined extension section 24b2 extends from the end of the first straight extension section 24b1 at an angle relative to the support plate 22, passes through the end wall of the first end of the housing 21, and extends into the support plate 22. The third straight extension section 24b3 extends from the end of the inclined extension section 24b2 along the first direction X, with the surface of the third straight extension section 24b3 exposed from the surface of the support plate 22. The third straight extension section 24b3 is bonded to the soldering area on the circuit board 1 by bonding welding.

[0117] The housing 21 , the support plate 22 , and the positioning protrusions are all made of insulating materials, and the support plate 22 , the positioning protrusions, and the housing 21 are integrally formed.

[0118] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery device (1000), characterized in that: It comprises a battery box (200), at least one battery cell (A) arranged in the battery box (200), and a sampling assembly, wherein the sampling assembly comprises: A circuit board (1) for electrically connecting to the at least one battery cell (A); and A connector (2) comprises a housing (21), a support plate (22), and connection terminals (24) arranged on the support plate (22); the circuit board (1) is electrically connected to the connection terminals (24) and is mounted on the support plate (22); and the support plate (22) and the housing (21) are integrally formed.

2. The battery device (1000) according to claim 1, characterized in that The support plate (22) and the housing (21) are formed by injection molding.

3. The battery device (1000) according to claim 1, characterized in that The connector (2) further comprises a first positioning structure (23) provided on the support plate (22) and a second positioning structure (25) provided on the circuit board (1), wherein the positions of the first positioning structure (23) and the second positioning structure (25) correspond to and cooperate with each other.

4. The battery device (1000) according to claim 3, characterized in that One of the first positioning structure (23) and the second positioning structure (25) comprises a positioning protrusion, and the other of the first positioning structure (23) and the second positioning structure (25) comprises a positioning hole, wherein the positioning protrusion is in concave-convex fit with the positioning hole.

5. The battery device (1000) according to any one of claims 1 to 4, characterized in that: The end of the connecting terminal (24) passes through the support plate (22) in the thickness direction of the support plate (22) to form a terminal foot (241), and the terminal foot (241) is electrically connected to the circuit board (1).

6. The battery device (1000) according to claim 5, characterized in that The connector (2) includes a plurality of connecting terminals (24) such that a plurality of terminal pins (241) are distributed on the support plate (22), the plurality of terminal pins (241) forming at least two terminal pin groups spaced apart in a first direction (X), and each terminal pin group includes at least two terminal pins (241) spaced apart in a second direction (Y), the first direction (X) and the second direction (Y) being perpendicular to each other.

7. The battery device (1000) according to claim 6, characterized in that The terminal pins (241) of the at least two terminal pin groups are staggered in the second direction (Y).

8. The battery device (1000) according to claim 6, characterized in that The support plate (22) comprises insulating material, and two adjacent terminal pins (241) are isolated from each other by the support plate (22).

9. The battery device (1000) according to claim 5, characterized in that The terminal pin (241) is connected to the circuit board (1) by welding.

10. The battery device (1000) according to claim 9, characterized in that The terminal pin (241) is welded to the circuit board (1) by means of through-hole welding and / or bonding welding.

11. The battery device (1000) according to claim 10, characterized in that The connector (2) includes a plurality of connecting terminals (24) so ​​that a plurality of terminal pins (241) are distributed on the support plate (22), wherein the plurality of terminal pins (241) include a first terminal pin, the first terminal pin extends in the thickness direction of the support plate (22), and the portion of the first terminal pin that passes through the support plate (22) is welded to the circuit board (1) in a through-hole welding manner; and / or the plurality of terminal pins (241) include a second terminal pin, the second terminal pin extends along a first direction (X), and the portion of the second terminal pin passes through the support plate (22) in the thickness direction of the support plate (22), and the portion of the second terminal pin that passes through the support plate (22) is welded to the circuit board (1) in a bonding welding manner.

12. An electrical device, characterized in that: Comprising a battery device (1000) according to any one of claims 1 to 11, the battery device (1000) is used to provide electrical energy.

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