Electric control device, battery device and electric device

Abstract

The utility model relates to battery device technical field provides a kind of electric control device, battery device and electric device, the electric control device includes base subassembly, battery management main control board and high voltage sampling piece, base subassembly includes base shell, at least part high voltage bar is embedded in base shell, high voltage bar is used to be electrically connected with peripheral device;Battery management main control board is located on base subassembly, one end of high voltage sampling piece is connected with high voltage bar, and, the other end of high voltage sampling piece is connected with battery management main control board. By embedding high voltage bar into base shell, the integration of high voltage bar and base shell is realized, thereby the space utilization is improved, and high voltage bar and base shell are integrally injection molded, the assembly efficiency of electric control assembly is improved;In addition, high voltage sampling piece is used instead of wiring harness, terminal and connector, the refinement of parts is realized, the element failure probability is reduced, and the space utilization is improved simultaneously.

Description

[0001] This application incorporates, in its entirety, International Patent Application No. PCT / CN2024 / 131851, filed on November 13, 2024, entitled “Electrical Control Device, Battery Device and Electrical Device”. Technical Field

[0002] This utility model relates to the field of battery device technology, and in particular to an electronic control device, a battery device, and an electrical device. Background Technology

[0003] The electronic control device includes multiple high-voltage switches, which are used to realize the electrical connection between electrical components in the electronic control device. The high-voltage switches can be connected to high-voltage relays, shunts, fuses, and pre-charge relays to form a high-voltage discharge circuit, a high-voltage charging circuit, and a pre-charge circuit for the battery device. The battery management main control board monitors the total voltage of the battery pack by collecting the voltage signals on the high-voltage switches, thereby determining the charging and discharging status of the battery pack and estimating the SOC.

[0004] In related products, the voltage signal of the high-voltage bar is generally transmitted by connecting the wire harness and terminals connected to the high-voltage bar to the connector installed on the battery management main control board. This transmission method results in high maintenance costs and a high failure probability due to the large number of parts. In addition, the wire harness and connector occupy a lot of space, resulting in low assembly efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an electronic control device, a battery device, and an electrical device, which aims to improve the connection efficiency between the high-voltage switch and the battery management main control board in the electronic control device, reduce the probability of component failure, and improve space utilization.

[0006] The technical solution adopted in the embodiments of this application is:

[0007] In a first aspect, this application provides an electronic control device, comprising:

[0008] A base assembly, the base assembly including a base housing, in which at least a portion of a high-voltage switch is embedded, the high-voltage switch being used for electrical connection with a peripheral device;

[0009] A battery management main control board, which is mounted on the base assembly.

[0010] A high-voltage sampling device, one end of which is connected to the high-voltage switch, and the other end of which is connected to the battery management main control board.

[0011] The beneficial effects of the embodiments of this application are as follows: The electronic control device provided by this application integrates the high-voltage switch with the base housing by embedding the high-voltage switch into the base housing. The part of the high-voltage switch embedded in the base housing directly utilizes the thickness space of the base housing, thereby improving space utilization. In addition, the high-voltage switch and the base housing are integrally injection molded, which improves the assembly efficiency of the electronic control components. Furthermore, the use of high-voltage sampling components to replace wire harnesses, terminals and connectors simplifies the parts, reduces the probability of component failure, and improves space utilization.

[0012] In some embodiments, the high-voltage sampling device is integrated into the battery management main control board; or...

[0013] The high-pressure sampling component and the high-pressure plate are integrated into the base housing.

[0014] In some embodiments, the high-pressure sampling element includes an embedded sampling element, at least a portion of which is embedded in the base housing.

[0015] In some embodiments, the effective length M of the embedded sampling element within the base housing is greater than or equal to 15 mm.

[0016] In some embodiments, the base housing is provided with at least two core holes, each core hole corresponding to the embedded sampling element, and the core holes are spaced apart along the length direction of the embedded sampling element.

[0017] In some embodiments, the distance between two adjacent core holes is N, where 10mm ≤ N ≤ 30mm.

[0018] In some embodiments, the embedded sampling element includes a fifth end and a sixth end, the fifth end being connected to the high-voltage bar plate and injection molded together with the base housing, and the sixth end extending to the outside of the base housing for connection with the battery management main control board.

[0019] In some embodiments, the high-pressure plate and the fifth end are connected by at least two fasteners, and the high-pressure plate and the fifth end are integrally formed into the base housing after being connected.

[0020] In some embodiments, the spacing K between two adjacent fasteners is greater than or equal to 3 mm.

[0021] In some embodiments, the length of the sixth end extending away from the fifth end is L, where 8mm ≤ L ≤ 15mm.

[0022] In some embodiments, a support member is provided between the sixth end and the battery management main control board, and the support member is used to connect the sixth end to the battery management main control board.

[0023] In some embodiments, the buried sampling element is bent, and the buried sampling element includes a bent portion located between the fifth end and the sixth end.

[0024] In some embodiments, the opposite ends of the bent portion are perpendicular to the fifth end and the sixth end, respectively.

[0025] In some embodiments, the high-voltage switch includes an embedded switch, which includes a first end, an embedded connecting section, and a second end. The first end is used to connect to the high-voltage terminal line of the high-voltage relay, the embedded connecting section is embedded in the base housing, and the second end is used to electrically connect to an external device.

[0026] In some embodiments, the first end is located on one side of the base housing along the height direction of the base housing, and the second end is located on the other side of the base housing along the height direction of the base housing.

[0027] In some embodiments, the direction from the second end to the first end is the direction in which the electronic control device is installed in the housing of the battery device.

[0028] In some embodiments, the first end portion includes a first side and a second side along its own thickness direction, and both the first side and the second side portion have at least some metal exposed on the outer surface of the base housing;

[0029] The exposed metal on the first side abuts against the high-voltage terminal of the high-voltage relay, while the metal on the second side is exposed on the outer surface of the base housing.

[0030] In some embodiments, the height of the second side of the first end exposed above the plastic of the base housing in the thickness direction of the first end is G, where G > 0.5 mm.

[0031] In some embodiments, the first side also includes a metal exposed surface and a metal embedded surface. The metal exposed surface of the first side is used to abut against the high-voltage terminal of the high-voltage relay. The metal embedded surface of the first side is embedded in the base housing. The base housing is provided with a terminal connection hole. The metal exposed surface is located in the terminal connection hole. The high-voltage terminal is connected to the metal exposed surface at the terminal connection hole.

[0032] In some embodiments, the embedded sampling element includes a fifth end, which is stacked on the first side surface, and the fifth end is embedded together with the metal embedded surface in the base housing.

[0033] In some embodiments, the second end includes a third side and a fourth side along the thickness direction of the creaking sound, the third side being exposed on the outer surface of the base housing, and the fourth side being embedded in the base housing.

[0034] In some embodiments, the height at which the third side of the second end protrudes from the base housing plastic along the thickness direction of the second end is J, where J > 0.5 mm.

[0035] In some embodiments, the embedded connecting segment is embedded in the base housing, and the opposite ends of the embedded connecting segment are perpendicular to the first end and the second end, respectively.

[0036] In some embodiments, the high-voltage relay includes a loose relay, which includes a third end, an intermediate connecting section, and a fourth end. The third end is used to connect to the high-voltage terminal of the high-voltage relay, the fourth end is connected to the base housing, and the intermediate connecting section is connected to the third end and the fourth end.

[0037] In some embodiments, the high-pressure bridge includes an embedded bridge and a loose bridge. The embedded bridge includes a first end, an embedded connecting section, and a second end. The loose bridge includes a third end, an intermediate connecting section, and a fourth end.

[0038] The high-voltage relay includes two high-voltage terminals, one of which is connected to the first end of the embedded pad, and the other high-voltage terminal is connected to the third end of the pad.

[0039] In some embodiments, the first end includes a first side and a second side along its own thickness direction, the first side being used to abut against the high-voltage terminal of the high-voltage relay, and the metal of the second side being exposed on the outer surface of the base housing;

[0040] The third end face includes a fifth side and a sixth side along its own thickness direction. The fifth side is used to abut against the high-voltage terminal of the high-voltage relay. The sixth side is on the same plane as the second side, or the height difference between the sixth side and the second side on the thickness of the base housing is ≤1mm.

[0041] In some embodiments, when there is a height difference between the sixth side and the second side in the thickness direction of the base housing, the height difference between the sixth side and the second side is ≤0.5mm.

[0042] Secondly, this application provides a battery device, including the aforementioned electronic control device and battery cell assembly, wherein the battery cell assembly and electronic control device are electrically connected.

[0043] Thirdly, this application provides an electrical device, including a battery device as described in any of the above, the battery device being used to store or provide electrical energy.

[0044] It is understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0047] Figure 2 An exploded view of the battery device provided in the embodiments of this application;

[0048] Figure 3 Exploded view of the electronic control device and heat exchanger provided in the embodiments of this application;

[0049] Figure 4 An exploded view of the electronic control device provided in the embodiments of this application;

[0050] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0051] Figure 6 A schematic diagram of the structure of the electronic control device provided in the embodiment of this application after removing the bottom shell and top cover;

[0052] Figure 7 A schematic diagram of the electronic control device provided in this application embodiment from another angle after removing the bottom shell and top cover;

[0053] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0054] Figure 9This is a schematic diagram of the battery management main control board of the electronic control device provided in the embodiments of this application;

[0055] Figure 10 for Figure 9 Enlarged view of point C in the middle;

[0056] Figure 11 This is a schematic diagram of the structure of the relay in the electronic control device provided in Embodiment 1 of this application;

[0057] Figure 12 An exploded view of the relay of the electronic control device provided in Embodiment 1 of this application;

[0058] Figure 13 for Figure 12 Enlarged view of point D in the middle;

[0059] Figure 14 A top view of the relay of the electronic control device provided in Embodiment 1 of this application;

[0060] Figure 15 A top view of the relay in the electronic control device provided in Embodiment 2 of this application;

[0061] Figure 16 A top view of the relay of the electronic control device provided in Embodiment 3 of this application;

[0062] Figure 17 An exploded view of the high-voltage switch in the electrical control device provided in Embodiment 1 of this application, showing the switch installation scheme.

[0063] Figure 18 This is a front view of the embedded pad in the electronic control device provided in Embodiment 1 of this application;

[0064] Figure 19 A partial cross-sectional view of the electronic control device provided in the embodiments of this application;

[0065] Figure 20 A partial cross-sectional view from another angle of the electronic control device provided in the embodiments of this application;

[0066] Figure 21 An exploded view of the high-voltage switch in the electrical control device provided in Embodiment 2 of this application, which uses a dispersed switch scheme;

[0067] Figure 22 This is a front view of the shampoos in the electronic control device provided in Embodiment 2 of this application;

[0068] Figure 23 A schematic diagram of the structure of the high-voltage switch in the electrical control device provided in Embodiment 1 of this application, which adopts a switch-embedded scheme (excluding the base assembly);

[0069] Figure 24 for Figure 23Enlarged view at point E in the middle;

[0070] Figure 25 This is a front view of the high-voltage sampling plate in the electronic control device provided in Embodiment 1 of this application;

[0071] Figure 26 An exploded view of the high-voltage switch in the electrical control device provided in Embodiment 1 of this application, using a switch-embedded scheme (excluding the base assembly);

[0072] Figure 27 for Figure 26 Enlarged view at point F;

[0073] Figure 28 This is a schematic diagram of the structure of the base assembly of the electronic control device provided in the embodiments of this application;

[0074] Figure 29 This is a structural schematic diagram of the base assembly of the electronic control device provided in an embodiment of this application from another perspective;

[0075] Figure 30 for Figure 29 Enlarged view of point G in the middle;

[0076] Figure 31 Another structural schematic diagram of the base assembly of the electronic control device provided in the embodiments of this application;

[0077] Figure 32 for Figure 31 Enlarged view of point H in the middle;

[0078] Figure 33 An exploded view of the electrical control device electrodes and heat exchanger provided in the embodiments of this application;

[0079] Figure 34 A cross-sectional view of the electronic control device provided in the embodiments of this application;

[0080] Figure 35 A cross-sectional view of the electronic control device provided in the embodiments of this application from another angle.

[0081] Explanation of reference numerals in the attached figures:

[0082] 1000, Vehicle; 100, Electronic control device; 1001, Battery device; 200, Battery cell assembly; 300, Housing; 400, Heat exchanger;

[0083] 10. Base assembly; 10a. Mounting groove; 10b. Core hole; 10c. Support structure; 10d. Enclosure; 10e. Mounting post; 10f. Insertion hole; 10g. First cavity; 10h. Second cavity; 10i. Third cavity; 10j. Clearance notch; 10k. Glue; 10p. Base housing; 10r. Terminal connection hole;

[0084] 20. High-voltage relay; 21. Low-voltage terminal; 20a. Peripheral sidewall; 211. Main body; 212. Separator; 213. Connection point; 22. Outer fillet of yoke; 23. High-voltage terminal; 24. Relay body; 25. Upper housing assembly; 251. Magnet frame; 252. Magnetic component; 2511. First plate; 2512. Second plate; 2513. Support arm; 2513a. Long sidewall; 2513b. Short sidewall;

[0085] 30. Battery management main control board; 31. Low-voltage transmission component; 32. Support component; 321. First part; 322. Second part;

[0086] 40. Bottom shell; 40a. First opening; 40b. Sealing groove; 41. Heat-conducting component; 42. Insulating component; 421. Insulating sheet; 422. Insulating flange; 43. Abutment component;

[0087] 50. Cover plate; 51. Top cover; 52. Side cover; 53. Supporting rib; 54. Sloping platform;

[0088] 60. Battery cell monitoring circuit board; 61. Top cover; 62. Second opening;

[0089] 70. Shunt unit; 71. Metal terminal section; 72. Signal transmission section;

[0090] 80. Pre-charge relay; 81. Pre-charge resistor;

[0091] 90. Fuse; 91. Fuse busbar;

[0092] 101. High-pressure sampling device; 102. Embedded sampling device; 1021. First end; 1022. Embedded connecting section; 1023. Second end; 1021a. First side; 1021a1. Exposed metal surface; 1021a2. Embedded metal surface; 1021b. Second side; 1023a. Third side; 1023b. Fourth side; 103. Scattered sampling device; 1031. Third end; 1032. Intermediate connecting section; 1033. Fourth end; 1031a. Fifth side; 1031b. Sixth side; 104. High-pressure sampling component; 105. Embedded sampling component; 105a. Fifth end; 105b. Sixth end; 106. Flat head bolt. Detailed Implementation

[0093] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0094] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0095] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0096] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0097] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0098] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0099] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0100] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0101] A battery apparatus may include one or more battery cell assemblies to provide voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via busbars. The battery apparatus also includes a high-voltage distribution unit (BDU) and a battery management system (BMS). The high-voltage distribution unit primarily controls the smooth operation of the battery's charging and discharging circuits, while the battery management system is responsible for intelligent management and maintenance of the battery system, monitoring battery status, and ensuring safe battery operation. A battery apparatus may be a battery pack, which typically includes a housing and one or more battery cell assemblies housed within the housing. Power from the battery cell assemblies is transmitted to the high-voltage distribution unit, and then to the electrical equipment. The voltage, current, and temperature parameters of the battery cell assemblies are collected and monitored by the battery management system, which controls the on / off state of the circuits in the high-voltage distribution unit, thereby controlling the power transmission from the battery cell assemblies to the electrical equipment's battery management system.

[0102] In battery devices, the high-voltage power distribution unit primarily controls the smooth operation of the battery charging and discharging circuits. It is responsible for controlling the power-on / off process, pre-charging process, and charging process of the high-voltage electrical circuit. The high-voltage power distribution unit includes various electrical components, electrical connectors that realize circuit connections, sampling components for collecting circuit signals, and connectors for transmitting electrical signals. For example, electrical components include high-voltage relays, shunts, pre-charge relays, pre-charge resistors, and fuses; electrical connectors include copper busbars, aluminum busbars, and wire harnesses; sampling components include low-voltage sampling lines and sampling terminals; and connectors include low-voltage connectors and high-voltage connectors.

[0103] The main functions of a battery management system include data acquisition, status detection, safety protection, charging control, energy management, and equalization management. It includes a master control unit, the Battery Management Unit (BMU), which comprises data acquisition circuitry, sensors, and a microcontroller (MCU) to process the acquired data and communicate with other vehicle systems. In a distributed architecture, the battery management system may also include slave control units (CSCs). The CSC is responsible for detecting a certain number of battery cells or modules, collecting voltage, current, and temperature data, and sending this information to the BMU. The CSC mainly includes sensors for detecting battery cells and data acquisition circuitry.

[0104] However, in the high-voltage power distribution equipment of related products, electrical components, electrical connections, sampling components, and connectors are either scattered or integrated into one housing. The BMU integrates its functional module circuits via a PCB board and then installs them into another housing. Similarly, the CSC integrates its own functional module circuits via a PCB board and then installs them into a third housing. Furthermore, all three are installed in the battery unit, where they communicate via low-voltage wiring harnesses and low-voltage connectors. This results in a significant space occupation for the battery unit, thus affecting its energy storage capacity.

[0105] In view of this, the present application provides an electronic control device that integrates at least a part of a high-voltage power distribution device and a battery management system. After removing the shell of the PCB board of the battery management system, it is integrated on the base assembly. In this way, the overall integration of the electronic control device is higher, the arrangement of various electrical components is more compact, and the space occupied in the battery device is smaller, which can provide more space for the battery cell assembly and thus increase the capacity of the battery device.

[0106] Please refer to Figures 3 to 7 This application provides an electronic control device 100, including a base assembly 10 and a battery management main control board 30, wherein the battery management main control board 30 is disposed on the base assembly 10.

[0107] Understandably, the base assembly 10 is the main part of the electronic control device 100, used to support and fix the various components; that is, the base assembly 10 is a load-bearing structure.

[0108] The battery management main control board 30 is the main component in the battery management system. Here, the battery management main control board 30 can be the circuit board of the BMU, or it can be the circuit board after the BMU circuit and the CSC circuit are integrated. The battery management system should have a corresponding protective shell to protect the internal components such as the battery management main control board 30. Therefore, by removing the protective shell and placing the battery management main control board 30 on the base assembly 10, the space occupied by the protective shell can be saved. That is, the various components in the battery management system and the high-voltage power distribution device are all positioned according to the support carrier of the base assembly 10.

[0109] Here, placing the battery management main control board 30 on the base assembly 10 can mean that the battery management main control board 30 is directly placed on the base assembly 10, for example, by connecting the two through corresponding connection structures, such as screws, rivets, and snap-fit ​​structures; or it can mean that the battery management main control board 30 is placed on the base assembly 10 through an intermediate structure, for example, the intermediate structure can be a bracket, a fixing plate, etc., that is, the battery management main control board 30 can also be indirectly placed on the base assembly 10.

[0110] Thus, the overall integration of the electronic control device 100 provided in this application embodiment is higher, the arrangement of each device can be more compact, the space it occupies in the battery device is smaller, and it can provide more space for the battery cell assembly, thereby increasing the capacity of the battery device.

[0111] Please refer to Figure 3 and Figure 4 In one embodiment, the electronic control device 100 includes electrical components mounted on the base assembly 10 and connected to the battery management main control board 30.

[0112] Understandably, electrical components are the working elements in the electronic control device 100. For example, electrical components may be high-voltage relays, shunts, pre-charge relays, pre-charge resistors, and fuses. Due to differences in shape and structure, the electrical components can be directly connected to the base assembly 10, for example, by screws, snap-fit ​​structures, etc., and installed at the stepped structure of the base assembly; or, corresponding slot structures or cavities can be formed in the base assembly 10 to accommodate the electrical components.

[0113] The connection between each electrical component and the battery management main control board 30 can be direct or indirect. "Direct connection" means that there is no need for complicated wiring harness connection between the two, but rather they are connected by short-distance plugging, bonding, welding, bolting, snap-fitting, etc. "Indirect connection" means that the two need to be connected over a longer distance through wiring harnesses, etc.

[0114] Of course, in other embodiments, a portion of each electrical component may be directly connected to the battery management main control board 30, while another portion of each electrical component may be indirectly connected to the battery management main control board 30.

[0115] In this way, the battery management main control board 30 can collect the high voltage signals of the corresponding electrical components, as well as the low voltage signals of the electrical components, and transmit them to the battery management main control board 30. In particular, the direct connection between each electrical component and the battery management main control board 30 can further improve the integration level.

[0116] The electronic control unit includes high-voltage relays, which are used to control the on / off state of the circuit. These relays typically include a high-voltage main positive relay and a high-voltage main negative relay, and may also include a fast-charging relay. The battery management main control board needs to transmit low-voltage control signals to the high-voltage relays. Signals sent from the battery management main control board to the high-voltage relays control their on / off state. In related technologies, a connector socket is usually provided on the high-voltage relay, and at least one connector receptacle is provided on the battery management main control board. A wire harness with plugs at both ends is also required; one end connects to the connector socket on the high-voltage relay, and the other end connects to the connector receptacle on the battery management main control board. This transmits the control signals from the battery management main control board to the high-voltage relay, enabling low-voltage control signal transmission from the battery management main control board to the high-voltage relay. This transmission method, due to the large number of wire harnesses and their complex arrangement, occupies a significant amount of space in the electronic control unit, reduces the unit's assembly efficiency, and increases maintenance difficulty. Furthermore, the high usage of wire harnesses, connector receptacles, and connector plugs increases the probability of component failure.

[0117] Therefore, please refer to Figures 4 to 14 In this embodiment, a low-voltage transmission component 31 is provided on the battery management main control board 30, and a low-voltage terminal 21 is provided on the high-voltage relay 20. One end of the low-voltage transmission component 31 is connected to the battery management main control board 30, and the other end extends out of the battery management main control board 30 and connects to the low-voltage terminal 21 on the high-voltage relay 20. Thus, the low-voltage transmission component 31 replaces the socket and the wire harness with plugs at both ends on the battery management main control board in the related technology, and the low-voltage terminal 21 replaces the connector socket on the high-voltage relay 20, thereby simplifying the parts, reducing the probability of component failure, and greatly improving the space utilization rate.

[0118] The low-voltage transmission component 31 can be a sheet, wire, or wire-shaped metal component capable of transmitting electrical signals, such as a copper sheet, nickel sheet, copper wire, or aluminum wire.

[0119] One end of the low-voltage transmission component 31 is fixedly connected to the battery management main control board 30 by welding, bonding, or threaded connection. Copper sheet can be used as the low-voltage transmission component 31, and one end is fixed to the battery management main control board 30 by welding. The other end of the low-voltage transmission component 31 extends out of the battery management main control board 30, and a pad area or mounting hole, mounting groove, or other structure is provided at the end to connect to the low-voltage terminal 21 on the high-voltage relay 20.

[0120] The low-voltage transmission component 31 can be located at the edge of the battery management main control board 30. Optionally, multiple low-voltage transmission components 31 can be arranged sequentially along the edge of the longest side of the battery management main control board 30 to facilitate connection with the low-voltage terminal 21 of the high-voltage relay 20. When multiple high-voltage relays 20 are located on one side of the battery management main control board 30 along the thickness direction, the low-voltage transmission components 31 can also be concentrated on one side of the battery management main control board along the thickness direction. Preferably, the low-voltage transmission component 31 extends toward the high-voltage relay 20.

[0121] Optionally, such as Figure 9 , 10 As shown, the low-voltage transmission component 31 is sheet-shaped. The length A of the low-voltage transmission component 31 extending out of the battery management main control board 30 ranges from 10mm to 20mm. For example, the length A of the low-voltage transmission component 31 extending out of the battery management main control board 30 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc. Meanwhile, the thickness B of the low-voltage transmission component 31 ranges from 0.5mm to 1.0mm to ensure that the low-voltage transmission component does not deform or bend; for example, the thickness B of the low-voltage transmission component 31 can be 0.5mm, 0.64mm, 0.8mm, 1.0mm, etc. Furthermore, the width C of the low-voltage transmission component is controlled within the range of 6mm to 10mm. For example, the width C of the low-voltage transmission component 31 can be 6mm, 7mm, 8mm, 9mm, 10mm, etc., to ensure the current-carrying area and the locking area of ​​the low-voltage transmission component 31. For example, a hole structure with a diameter of 4 mm can be opened on the low-voltage transmission component 31, and a screw with a diameter of M3 can be used to lock it to the low-voltage terminal 21.

[0122] The high-voltage relay 20 used in the battery device 1001 is usually an electromagnetic relay. The two low-voltage terminals 21 on the high-voltage relay 20 are respectively the two ends of the electromagnetic coil inside the high-voltage relay 20. At least part of the metal of the two low-voltage terminals 21 is exposed on the high-voltage relay 20.

[0123] The low-voltage terminal 21 can be a sheet-like metal part, a column-like metal part, or a boss-like metal part, such as a copper sheet, an aluminum column, or a copper column.

[0124] The low-voltage terminal 21 and the low-voltage transmission component 31 can be electrically connected by means of welding, screwing, snap-fitting, plugging, etc. For example, a solder pad area can be provided on the low-voltage terminal 21, and the low-voltage transmission component 31 and the low-voltage terminal 21 can be connected by welding; optionally, such as Figure 7 As shown, a crimp nut or weld nut is crimped to the bottom of the low-voltage terminal 21, and a hole structure is provided at one end of the low-voltage transmission component 31. A screw passes through the hole structure and is threadedly connected to the crimp nut or weld nut. Alternatively, the low-voltage transmission component 31 is a female terminal and the low-voltage terminal 21 is a male terminal, in which case the two can be connected by plugging in.

[0125] The low-voltage terminal 21 can extend outward from the end face of the high-voltage relay 20, or it can extend outward from the peripheral side of the high-voltage relay 20, or it can be directly disposed on the end face or the peripheral side. Specifically, the two low-voltage terminals 21 can extend side by side with a narrow gap, such as... Figure 14 The two low-voltage terminals 21 in the middle; or they can be wide-spaced extensions on the same side, such as Figure 15 As shown; it can also extend to the opposite side, such as Figure 16 As shown.

[0126] Please refer to Figure 14 The length D of the low-voltage terminal 21 ranges from 5mm to 10mm, and the length D of the low-voltage terminal 21 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., and the width E of the low-voltage terminal 21 ranges from 5mm to 10mm, and the width D of the low-voltage terminal 21 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., so as to ensure that a certain connection area and current carrying area are provided without occupying too much space.

[0127] Additionally, please refer to the figure. The minimum distance F (i.e., electrical clearance) between the exposed metal of the two low-voltage terminals 21 on the same high-voltage relay 20 must be controlled to be greater than 3.0 mm to ensure that electrical safety requirements are met.

[0128] Understandably, the high-voltage relay 20 can be a cubic structure or a similar cubic structure, therefore, as Figure 11 As shown, in the XYZ spatial coordinate system, the X-axis direction is the width direction of the high-voltage relay 20, the Y-axis direction is the length direction of the high-voltage relay 20, and the Z-axis direction is the height direction of the high-voltage relay 20. Therefore, the top or bottom end of the high-voltage relay 20 refers to the surface structure perpendicular to the Z-axis direction (or, it can also be called the top or bottom, or end face), and the peripheral sidewall of the high-voltage relay 20 refers to the surface structure perpendicular to the XY plane (or, it can also be called the peripheral side).

[0129] Optionally, the extension direction of the low-voltage terminal 21 of the high-voltage relay 20 can be selected according to actual usage requirements. The high-voltage relay 20 has a cubic or near-cubic structure, with two oppositely arranged end faces and a peripheral side connecting the two end faces. Therefore, the low-voltage terminal 21 can extend outward from the end face of the high-voltage relay 20, or it can extend outward from the peripheral side of the high-voltage relay 20, or it can be directly disposed on the end face or the peripheral side. Furthermore, the base assembly 10 can be a cubic or near-cubic structure; therefore, if... Figure 7 As shown, in the XYZ spatial coordinate system, the X-axis direction is the width direction of the base assembly 10, the Y-axis direction is the length direction of the base assembly 10, and the Z-axis direction is the height direction of the base assembly 10. Therefore, the end face of the base assembly 10 refers to the top or bottom surface perpendicular to the Z-axis direction (or, it can also be called the top or bottom); the peripheral side surface of the base assembly 10 refers to the surface structure perpendicular to the XY plane; according to the extension direction of the low-voltage terminal 21 of the high-voltage relay 20, the battery management main control board 30 can be set on the peripheral side surface of the base assembly 10, or the battery management main board can also be set on the end face of the base assembly 10.

[0130] Here, the low-voltage terminal 21 of the high-voltage relay 20 and the low-voltage transmission component 31 of the battery management main control board 30 can be connected by thread, welding, snap-fit, bonding, or plugging. For example, if the low-voltage transmission component 31 of the battery management main control board 30 is a sampling copper sheet, mounting holes or threaded holes are provided on both the sampling copper sheet and the low-voltage terminal 21. A screw is used to pass through the two mounting holes or threaded holes to connect the sampling copper sheet and the low-voltage terminal 21. As another example, if the low-voltage transmission component 31 of the battery management main control board 30 is a female terminal and the low-voltage terminal 21 is a male terminal, then the two can be connected by plugging.

[0131] For example, such as Figure 4 and Figure 8 As shown, a mounting groove 10a is provided on one end face of the base assembly 10, and a high-voltage relay 20 is disposed in the mounting groove 10a. Two low-voltage terminals 21 are provided on the peripheral side of the high-voltage relay 20, extending out side by side with a narrow gap. A press-fit nut or a welding nut is pressed onto the bottom of the low-voltage terminals 21. A battery management main control board 30 is disposed on the peripheral side of the base assembly 10. A low-voltage transmission component 31 extends from the battery management main control board 30. One end of the low-voltage transmission component 31 is welded to the battery management main control board 30, and the other end is provided with a mounting hole. A screw passes through the mounting hole and is threadedly connected to the press-fit nut or the welding nut.

[0132] The electronic control device 100 provided in this embodiment integrates the battery management main control board 30 directly onto the base assembly 10 after removing its casing, and directly connects it to the high-voltage relay 20 on the base assembly 10. Specifically, the low-voltage terminal 21 is connected to the low-voltage transmission component 31 of the battery management main control board 30. This results in higher overall integration of the electronic control device 100, a more compact arrangement of electrical components, and a smaller footprint. When this electronic control device 100 is used in a battery device, it provides more space for individual battery cells, thereby increasing the capacity of the battery device.

[0133] Please refer to Figures 7 to 12 In one embodiment, the high-voltage relay 20 has a peripheral sidewall 20a, and the low-voltage terminal 21 extends outward from the peripheral sidewall 20a of the high-voltage relay 20. The low-voltage transmission element 31 is a sampling copper sheet, and the sampling copper sheet is connected to the low-voltage terminal 21 by fasteners.

[0134] Understandably, the peripheral wall 20a is the outer peripheral surface of the high-voltage relay 20, and a surface structure perpendicular to the XY plane. When the high-voltage relay 20 is installed in the mounting groove 10a, a portion of the peripheral wall 20a should be exposed outside the mounting groove 10a. At this time, the low-voltage terminal 21 is connected to this exposed portion of the peripheral wall 20a to allow the low-voltage terminal 21 to extend outward. The sampling copper sheet is electrically connected to the battery management main control board 30. A first through hole is opened on the sampling copper sheet, and a second through hole is opened on the low-voltage terminal 21. Screws, pins, and other fasteners are sequentially inserted through the through holes to achieve a locking connection between the sampling copper sheet and the low-voltage terminal 21.

[0135] In this way, extending the low-voltage terminal 21 outward from the peripheral sidewall 20a of the high-voltage relay 20 provides a wider installation angle, making it easier for operators to install. At the same time, connecting the low-voltage terminal 21 and the sampling copper plate with fasteners provides higher reliability and relatively lower connection accuracy, making it easier to operate.

[0136] In other embodiments, the high-voltage relay 20 has a peripheral sidewall 20a, a low-voltage terminal 21 extends outward from the peripheral sidewall 20a of the high-voltage relay 20, and the low-voltage transmission member 31 is a female terminal, with the low-voltage terminal 21 plugged into the female terminal.

[0137] Understandably, in this embodiment, the low-voltage terminal 21 and the low-voltage transmission component 31 are connected by a plug-in connection. Specifically, the low-voltage transmission component 31 is a female terminal, and the low-voltage terminal 21 is a male terminal or a similar male terminal. The two are plugged into each other to insert the low-voltage terminal 21 into the female terminal.

[0138] This plug-in connection method is suitable for applications where the number of high-voltage relays 20 is small and the plug-in position accuracy is high.

[0139] Of course, in other embodiments, the low-voltage terminal 21 can also be welded to the low-voltage transmission component 31, and the welding connection method has higher connection reliability.

[0140] In one embodiment, the high-voltage relay 20 has a top portion, and the low-voltage terminal 21 extends outward from the top portion of the high-voltage relay 20. Then, the battery management main control board 30 can be disposed on the base assembly 10 and covered in the mounting groove 10a, and the low-voltage terminal 21 is connected to the low-voltage transmission component 31.

[0141] Understandably, the top part is the end of the high-voltage relay 20 that extends out of the mounting groove 10a to the outside, that is, the surface structure perpendicular to the Z-axis direction. The low-voltage terminal 21 extends outward from the top part to the outside of the mounting groove 10a, which corresponds exactly to the battery management main control board 30 covering the mounting groove 10a. At this time, the low-voltage transmission component 31 can be a sampling hole formed on the battery management main control board 30, and the low-voltage terminal 21 is inserted into the sampling hole to achieve electrical connection.

[0142] Similarly, extending the low-voltage terminal 21 from the top of the high-voltage relay 20 can also satisfy the need to connect to the low-voltage transmission component 31 on the battery management main control board 30, and the degree of integration is also relatively high.

[0143] Of course, in other embodiments, when the low-voltage terminal 21 extends outward from the top of the high-voltage relay 20, the battery management main control board 30 may also be disposed on the peripheral side of the base assembly 10, that is, the plane where the battery management main control board 30 is located is parallel or approximately parallel to the peripheral side wall 20a of the high-voltage relay 20, and then the low-voltage terminal 21 is connected to the low-voltage transmission component 31.

[0144] Please refer to Figure 7 and Figure 8 In one embodiment, the low-voltage terminal 21 extends in a direction perpendicular to the plane of the battery management main control board 30.

[0145] Understandably, the extension direction of the low-voltage terminal 21 refers to the direction in which the low-voltage terminal 21 is exposed to the high-voltage relay 20. For example, the extension direction of the low-voltage terminal 21 can be perpendicular to the peripheral sidewall 20a of the high-voltage relay 20, or it can be perpendicular to the top end of the high-voltage relay 20. The plane where the battery management main control board 30 is located refers to the plane where the surface with the largest area of ​​the battery management main control board 30 is located, for example, the plane where the large surface of the battery management main control board 30 is located.

[0146] Setting the low-voltage terminal 21 to extend perpendicularly to the plane of the battery management main control board 30 minimizes the distance between the low-voltage terminal 21 and the surface of the battery management main control board 30. It also provides a better installation perspective, which is beneficial for operators to perform plug-in and bolt-locking connection methods.

[0147] For example, such as Figure 7 As shown, the battery management main control board 30 is disposed on the peripheral side of the base assembly 10 and extends along the length of the base assembly 10. The extension direction of the low-voltage terminal 21 is perpendicular to the plane where the battery management main control board 30 is located. Here, the extension direction of the low-voltage terminal 21 is perpendicular to the length direction of the base assembly 10 and also perpendicular to the Y-axis direction. That is, the extension direction of the low-voltage terminal 21 is parallel to the width direction of the base assembly 10 and also parallel to the X-axis direction. Therefore, the low-voltage terminal 21 will not encroach on the length dimension of the base assembly 10, so that the length of the base assembly 10 can be smaller, that is, the overall length of the electronic control device 100 is more compact.

[0148] Of course, in other embodiments, the extension direction of the low-voltage terminal 21 may also be parallel to the plane where the battery management main control board 30 is located. Then, the shape and structure of the low-voltage terminal 21 can be adjusted to meet the corresponding connection requirements; for example, the shape of the low-voltage terminal 21 can be set to L-shape or U-shape, etc. Therefore, while satisfying the connection with the low-voltage transmission component 31 of the battery management main control board 30, the extension direction of the low-voltage terminal 21 requires an increase in the length or height of the base assembly 10, that is, the overall length of the electronic control device 100 is relatively longer or the height is relatively higher. However, this may reduce the overall width of the electronic control device.

[0149] Please refer to Figures 11 to 14 In one embodiment, the low-voltage terminal 21 extends outward from the peripheral sidewall 20a of the high-voltage relay 20. The low-voltage terminal 21 includes a main body 211 connected to two adjacent peripheral sidewalls 20a of the high-voltage relay 20 and a partition 212 provided on the main body 211. The main body 211 is provided with two connection points 213 connected to the low-voltage transmission member 31, and the partition 212 is located between the two connection points 213.

[0150] Understandably, connection point 213 is a structure used to connect with low-voltage transmission component 31. For example, connection point 213 can be a hole structure formed on the main body 211. This hole structure can be a through hole, a blind hole, or a threaded hole, etc., to correspond to the through hole structure on the low-voltage transmission component 31. Finally, two through hole structures are passed through by bolts to achieve the purpose of locking connection. Alternatively, connection point 213 can be a protrusion formed on the main body 211. This protrusion is adapted to the female head structure of the low-voltage transmission component 31 to achieve plug-in connection. Alternatively, connection point 213 can also be a weld point formed on the main body 211 to correspond to the one on the low-voltage transmission component. Finally, two weld points are connected by welding.

[0151] The main body 211 is connected to the yoke inside the high-voltage relay 20. The main body 211 extends outward to transmit the corresponding electrical signal to the battery management main control board 30. The separator 212 is used to separate the two connection points 213 and increase the creepage distance of the two connection points 213.

[0152] Thus, by extending the two connection points 213 of the low-voltage terminal 21 on the same side, it is easier to assemble the high-voltage relay 20.

[0153] In this embodiment, the two connection points 213 of the low-voltage terminal 21 extend outward from both sides of the high-voltage relay 20, and the distance between the two connection points 213 is greater, providing sufficient creepage distance, thus eliminating the need for the separator 212.

[0154] In this way, the two connection points 213 of the low-voltage terminal 21 are separately set on the high-voltage relay 20, eliminating the need for... Figure 5 and Figure 7 The main body 211 extends beyond the peripheral wall of the high-voltage relay 20 in the length direction of the base assembly 10, which saves space in the length direction of the base assembly 10.

[0155] Please refer to Figure 14 In one embodiment, the distance H from the low-voltage terminal 21 to the outer fillet 22 of the yoke of the high-voltage relay 20 is greater than or equal to 3 mm.

[0156] Understandably, the outer fillet 22 of the yoke of the high-voltage relay 20 refers to the fillet formed between the peripheral wall 20a of the high-voltage relay 20 to which the low-voltage terminal 21 extends outward and the top end. In other words, the outer fillet 22 of the yoke of the high-voltage relay 20 is the edge formed by the connection between the top end of the high-voltage relay 20 and the peripheral wall 20a.

[0157] The distance H between the low-voltage terminal 21 and the outer fillet 22 of the yoke of the high-voltage relay 20 refers to the minimum distance between the low-voltage terminal 21 and the outer fillet of the yoke of the high-voltage relay 20, which is also called the electrical clearance.

[0158] Thus, when the minimum distance H from the edge of the low-voltage terminal 21 to the outer fillet 22 of the yoke of the high-voltage relay 20 is greater than or equal to 3mm, electrical safety can be satisfied.

[0159] Please refer to Figure 8 In one embodiment, the low-voltage transmission element 31 includes a sampling copper strip for connection to the low-voltage terminal 21.

[0160] Understandably, one end of the sampling copper plate is connected to the battery management main control board 30, and the other end extends outward to connect to the low-voltage terminal 21. The structure of the sampling copper plate can be adjusted accordingly based on the actual connection method with the low-voltage terminal 21.

[0161] For example, when the low-voltage terminal 21 is bolted to the sampling copper sheet, through holes or threaded holes are made on both the low-voltage terminal 21 and the sampling terminal for the bolt to pass through. Alternatively, when the low-voltage terminal 21 is plugged into the sampling copper sheet, the sampling copper sheet is rolled to form a female terminal or a similar structure for the low-voltage terminal 21 to plug into.

[0162] The electronic control unit also includes multiple high-voltage switches. These switches are used to connect electrical components within the control unit. They can connect to high-voltage relays 20, shunts, fuses, and pre-charge relays to form high-voltage discharge and charging circuits for the battery pack, as well as a pre-charge circuit. The battery management main control board monitors the total voltage of the battery pack by collecting voltage signals from the high-voltage switches, determining the charging and discharging status of the battery pack, and estimating the State of Charge (SOC). In related products, high-voltage switches are typically fixed to electrical components and the housing of the electronic control unit using bolts. This fixing method results in low assembly efficiency. Furthermore, the voltage signals from the high-voltage switches are generally transmitted via wiring harnesses and terminals connected to the high-voltage switches and connectors mounted on the battery management main control board. This transmission method leads to a large number of parts, resulting in high maintenance costs and a high probability of failure. Additionally, the wiring harnesses and connectors occupy a significant amount of space, reducing assembly efficiency.

[0163] In view of this, in the embodiments of this application, the electronic control device includes a base assembly, which includes a base housing. At least a portion of the high-voltage switch is embedded in the base housing. The portion of the high-voltage switch embedded in the base housing for electrical connection is exposed on the surface of the base housing, for forming an electrical connection with electrical components, battery packs, power circuits, etc. The electronic control device also includes a high-voltage sampling component. One end of the high-voltage sampling component is connected to the high-voltage switch, and the other end is directly or indirectly connected to the battery management main control board, so that the battery management main control board can collect the voltage signal on the high-voltage switch through the high-voltage sampling component. By embedding the high-voltage switch into the base housing, the high-voltage switch and the base housing are integrated. The portion of the high-voltage switch embedded in the base housing directly utilizes the thickness space of the base housing, thereby improving space utilization. Furthermore, the high-voltage switch and the base housing are integrally injection molded, improving the assembly efficiency of the electronic control component. In addition, using the high-voltage sampling component to replace wire harnesses, terminals, and connectors simplifies the parts, reduces the probability of component failure, and improves space utilization.

[0164] Please refer to Figure 17 and Figure 18 In this embodiment of the application, the high-voltage switch 101 includes an embedded switch 102. The embedded switch 102 includes a first end 1021, an embedded connecting section 1022, and a second end 1023. The first end 1021 is connected to the high-voltage terminal 23 of the high-voltage relay 20. The embedded connecting section 1022 is embedded in the plastic of the base housing 10p. The second end 1023 is electrically connected to other electrical components, battery packs, or power circuits.

[0165] Understandably, the embedded bar plate 102 should be integrally formed with the base housing 10p, that is, the embedded bar plate 102 is first placed in the mold, and then injection molded together with the base housing 10p to demold, so that the embedded connecting section is located in the plastic of the base housing 10p.

[0166] In this way, the embedded pad 102 is manufactured simultaneously with the base housing 10p, eliminating the need for manual installation of the pads, further improving production efficiency, and enabling the transition from electronic control devices to fully automated mechanical production.

[0167] For example, such as Figure 17 The high-voltage terminal 23 of the high-voltage relay 20 is located at the bottom of the base housing 10p. The first end 1021 is located at the high-voltage terminal 23 and connected to the high-voltage terminal 23. The embedded connection section 1022 is embedded in the side wall of the base housing 10p, while the second end 1023 extends out of the base housing 10p to allow for connection with other electrical components, battery packs, or power circuits.

[0168] Here, the first end 1021 is connected to the high-voltage terminal 23 by fasteners such as screws or pins, and the second end 1023 can also be connected to other electrical components, battery packs or power circuits by fasteners such as screws or pins.

[0169] Please refer to Figure 17 and Figure 18 In one embodiment, the first end 1021 is located on one side of the base housing 10p along its own height direction (i.e., the Z direction), and the second end 1023 is located on the other side of the base housing 10p along its own height direction. Optionally, the direction from the second end 1023 to the first end 1021 is the direction in which the electronic control device 100 is installed in the housing of the battery device 1001.

[0170] Understandably, the first end 1021 is adjacent to the bottom of the housing of the battery device 1001. With a heat exchanger installed at the bottom of the housing, the first end 1021 can easily exchange heat with the heat exchanger at the bottom of the housing. Since the second end 1023 needs to be connected to other electrical components, battery packs, or power circuits, the second end 1023 faces the opening side of the housing to facilitate assembly operations. The high-voltage terminal 23 of the high-voltage relay 20 is connected to the first end 1021. Therefore, the high-voltage terminal 23 of the high-voltage relay 20 also faces the bottom of the housing and can also exchange heat with the heat exchanger at the bottom of the housing.

[0171] Further, please refer to Figure 17 and Figure 18 In one embodiment, the first end 1021 includes a first side 1021a and a second side 1021b along its own thickness direction. At least part of the metal of both the first side 1021a and the second side 1021b is exposed on the outer surface of the base housing 10p. The exposed metal of the first side 1021a abuts against the high-voltage terminal 23 of the high-voltage relay 20 to achieve electrical connection. The metal of the second side 1021b is exposed on the outer surface of the base housing 10p to facilitate heat dissipation through the exposed portion.

[0172] Understandably, the first side 1021a is the surface structure of the first end 1021 facing the high-voltage terminal 23; the second side 1021b is the surface structure of the first end 1021 facing away from the high-voltage terminal 23. Therefore, when connecting to the high-voltage terminal 23, the first side 1021a should be at least partially exposed on the outer surface of the base housing 10p. At the same time, in order to meet the corresponding heat dissipation requirements, the second side 1021b should also be at least partially exposed on the outer surface of the base housing 10p.

[0173] Further, please refer to Figure 3A heat exchanger 400 can be installed on the second side 1021b to conduct heat out of the high-pressure bar 101; a thermally conductive pad can also be sandwiched between the high-pressure bar 101 and the heat exchanger 400 to improve the insulation performance between the high-pressure bar 101 and the heat exchanger 400, and at the same time improve the heat transfer performance through the thermally conductive pad.

[0174] Understandably, the heat exchanger 400 here can be a heat exchanger for the battery pack, meaning that each battery pack and the electronic control device use the same heat exchange system. This saves internal space in the battery pack housing and further increases the energy density of the battery pack. Alternatively, the heat exchanger 400 can be an independent heat exchanger. Since the high-voltage relay 20 of the electronic control device is a major heat-generating electrical component with significant heat output, independent heat exchange via a separate heat exchanger 400 can further improve the stability of the electronic control device during operation.

[0175] Further, please refer to Figure 19 In the direction along the thickness of the first end 1021, the height G of the second side 1021b of the first end 1021 exposed above the plastic of the base housing 10p is greater than 0.5mm.

[0176] Understandably, the height of the second side 1021b protruding from the plastic of the base housing 10p refers to the height of the second side 1021b extending from the plastic of the base housing 10p to the surface of the plastic of the base housing 10p. By adjusting the height of the second side 1021b protruding from the plastic of the base housing 10p at the first end 1021, the degree of contact between the second side 1021b and the heat exchanger 400 can be achieved, thereby improving the heat exchange efficiency between the high-pressure fin 101 and the heat exchanger 400.

[0177] Optionally, the height of the second side 1021b of the first end 1021 protruding from the plastic base housing 10p is set to 1.0 mm. Here, it is possible to achieve contact between the second side 1021b of the first end 1021 and the heat exchanger 400, and to provide sufficient contact reliability between the two.

[0178] Further, please refer to Figure 19The first side surface 1021a also includes a bare metal surface 1021a1 and a embedded metal surface 1021a2. The bare metal surface 1021a1 of the first side surface 1021a abuts against the high-voltage terminal 23 of the high-voltage relay 20. The embedded metal surface 1021a2 of the first side surface 1021a is embedded in the plastic of the base housing 10p. The base housing 10p is provided with a terminal connection hole 10r. The bare metal surface 1021a1 is located in the terminal connection hole 10r. The high-voltage terminal 23 is connected to the bare metal surface 1021a1 at the terminal connection hole 10r, thereby realizing the electrical connection between the two. The embedded metal surface 1021a2, that is, the part not connected to the high-voltage terminal 23, is embedded in the plastic housing, which can improve the insulation reliability of the electrical control device 100.

[0179] Please refer to Figure 18 In one embodiment, the second end 1023 includes a third side 1023a and a fourth side 1023b along its own thickness direction. The third side 1023a is exposed on the outer surface of the base housing 10p, and the fourth side 1023b is embedded in the base housing 10p.

[0180] Understandably, the third side 1023a is a surface structure facing away from the base housing 10p, and the fourth side 1023b is a surface structure facing the base housing 10p.

[0181] Furthermore, a hole structure is provided at the second end 1023, and the hole structure may be threaded inside, so that fasteners such as screws and pins can be passed through the hole structure to achieve connection with electrical components, battery packs or power circuits.

[0182] Optionally, two hole structures may be provided at the second end 1023 to prevent the hand parts from rotating and shifting during the connection process, thereby improving the reliability of the connection.

[0183] Further, please refer to Figure 19 Along the thickness direction of the second end 1023, the height J of the third side 1023a of the second end 1023 exposed above the plastic of the base housing 10p is greater than 0.5mm.

[0184] Understandably, the height of the third side 1023a protruding from the plastic of the base housing 10p refers to the height of the third side 1023a extending from the plastic of the base housing 10p to the surface of the plastic of the base housing 10p. The third side 1023a is mainly used for electrical connection with other electrical components, battery packs, and power circuits. Therefore, raising the height of the third side 1023a protruding from the plastic of the base housing 10p facilitates operation by the operator.

[0185] Optionally, the height of the third side 1023a of the second end 1023 protruding from the plastic base housing 10p is set to 1.0 mm. Here, it is possible to enable the third side 1023a of the second end 1023 to abut against other electrical components, battery packs, and power circuits, and to provide sufficient abutment reliability between them.

[0186] Further, please refer to Figure 17 and Figure 18 The embedded connecting section 1022 is embedded in the plastic of the base housing 10p, and the opposite ends of the embedded connecting section 1022 are perpendicular to the first end 1021 and the second end 1023, respectively.

[0187] Understandably, the perpendicularity between the buried connecting section 1022 and the first end 1021 means that the angle between the extension direction of the first end 1021 and the extension direction of the buried connecting section 1022 can be regarded as 90 degrees, and the perpendicularity between the buried connecting section 1022 and the second end 1023 means that the angle between the second end and the buried connecting section 1022 can be regarded as 90 degrees.

[0188] Thus, the two ends of the buried connecting section 1022 are perpendicularly connected to the first end 1021 and the second end 1023 respectively, which can further shorten the wiring distance between the high voltage terminal 23 of the high voltage relay 20 and other electrical components, battery packs and power circuits. In other words, the overall material used for the high voltage bar 101 can be reduced.

[0189] Please refer to Figure 21 and Figure 22 In one embodiment, the high-voltage relay 101 includes a loose relay 103, which includes a third end 1031, an intermediate connecting section 1032 and a fourth end 1033. The third end 1031 is connected to the high-voltage terminal 23 of the high-voltage relay 20, the fourth end 1033 is connected to the base housing 10p, and the intermediate connecting section 1032 connects the third end 1031 and the fourth end 1033.

[0190] Understandably, the loose connector 103 is a connector not embedded in the base housing 10p. It is more flexible than the embedded connector 102 and also requires manual installation. The third end 1031 is for connecting to the high-voltage terminal 23, the fourth end 1033 is for connecting to the base housing 10p, and the intermediate connecting section 1032 is the intermediate wiring section. Furthermore, the intermediate connecting section 1032 is completely exposed outside the plastic of the base housing 10p, that is, the intermediate connecting section 1032 is not connected to the base housing 10p.

[0191] Compared to integrally molding at least a portion of the embedded strip 102 into the base assembly, the loose strip 103 improves the effectiveness of the high-voltage relay 20 during installation. Specifically, when the embedded connection section 1022 of the embedded strip 102 is integrally molded within the base assembly 10, its overall position is fixed, and the adjustable range is small. Therefore, during installation, the position of the high-voltage terminal 23 of the high-voltage relay 20 needs to be adjusted to match the connection position on the first end 1021 of the high-voltage strip 101. This causes a corresponding deformation of the high-voltage terminal 23 of the high-voltage relay 20, increasing the probability of failure during subsequent use. However, the loose strip 103 has its fourth end 1033 connected to the base assembly, and its third end 1031 connected to the high-voltage terminal 23 of the high-voltage relay 20. Therefore, the deformable range of the third end 1031 of the loose strip 103 is significantly larger. Within the deformable range of the first end 1021 of the embedded copper busbar, the deformation of the third end 1031 of the strip 103 can be increased to adapt to the connection requirements with the high-voltage terminal 23 of the high-voltage relay 20. In particular, after the high-voltage strip 101 is fixed, if it needs to be connected to other electrical components, battery packs or power circuits later, the high-voltage strip 101 will be reinstalled. In this case, the torsional force will be transmitted along the high-voltage strip 101 to the connection of the high-voltage terminal 23 of the high-voltage relay 20, thereby causing the high-voltage terminal 23 to twist. The strip 103 can absorb this torsional force well. Since the strip 103 is not bound by the plastic of the base assembly, it can deform with the torsional force, thereby offsetting the torsion caused by the secondary installation.

[0192] Thus, the sampling plate 103 can further improve the stability of the connection with the high voltage terminal 23 of the high voltage relay 20.

[0193] Optionally, the fourth end 1033 is connected to the base housing 10p by fasteners. Further, the base housing 10p can be provided with threaded holes, and the fourth end 1033 is provided with through holes. Bolts are used to pass through the through holes and fix them to the threaded holes of the base housing 10p. Two through holes can be provided to improve the reliability of the connection.

[0194] Furthermore, in one embodiment, the high-voltage relay 20 includes two high-voltage terminals 23, one of which is connected to the first end 1021 of the embedded plate 102, and the other high-voltage terminal 23 is connected to the third end 1031 of the loose plate 103.

[0195] Understandably, since the embedded plate 102 has a small degree of deformation, after connecting one of the high-voltage terminals 23 to the embedded plate 102, the high-voltage relay 20 is initially positioned. At the same time, the loose plate 103 has a large degree of deformation. Therefore, when connecting the other high-voltage terminal 23 to the third end 1031 of the loose plate 103, the tolerance gap between the high-voltage terminal 23 and the plate can be absorbed by adjusting the setting position of the third end 1031 of the loose plate 103.

[0196] Further, please refer to Figure 21 and Figure 22 In one embodiment, the third end 1031 includes a fifth side 1031a and a sixth side 1031b along the thickness direction. The fifth side 1031a abuts against the high-voltage terminal 23 of the high-voltage relay 20 to achieve electrical connection. The sixth side 1031b is approximately in the same plane as the second side 1021b, or the height difference between the sixth side 1031b and the second side 1021b in the thickness of the base housing 10p is ≤1mm.

[0197] Understandably, the fifth side 1031a is the surface structure facing the high-voltage terminal 23 of the high-voltage relay 20, while the sixth side 1031b is the surface structure facing away from the high-voltage terminal 23 of the high-voltage relay 20. Since the second side 1021b of the first end 1021 of the embedded bar plate 102 is also the surface structure facing away from the high-voltage terminal 23 of the high-voltage relay 20, when the high-voltage relay 20 uses both the embedded bar plate 102 and the loose bar plate 103, the sixth side 1031b and the second side 1021b are approximately in the same plane, both facing the heat exchanger 400 and exchanging heat with the heat exchanger 400. This is beneficial for the two high-voltage terminals 23 of the high-voltage relay 20 to meet the same frequency heat exchange, thereby significantly reducing the operating temperature difference between the two high-voltage terminals 23.

[0198] Optionally, the height difference between the sixth side 1031b and the second side 1021b in terms of the thickness of the base housing 10p is ≤0.5mm.

[0199] Understandably, the smaller the height difference between the two sides, the more likely they are to be in the same plane. Consequently, the contact area between the two sides and the heat exchanger 400 can be controlled within the same or similar range, further enabling the two high-voltage terminals 23 of the high-voltage relay 20 to exchange heat at the same frequency and reducing the operating temperature difference between the two high-voltage terminals 23.

[0200] Please refer to Figures 23 to 26In the electronic control device 100, the high-voltage electrical signal from the high-voltage relay 20 is output to the battery management main control board 30 through the high-voltage sampling component 104. One end of the high-voltage sampling component 104 is connected to the high-voltage switch 101, and the other end is connected to the battery management main control board 30, thus playing the role of signal transmission. The high-voltage sampling component 104 can be integrated on the battery management main control board 30, or it can be integrated with the high-voltage switch 101 into the base housing.

[0201] Optionally, the high-pressure sampling component 104 and the high-pressure switch 101 are connected by fasteners such as pins and rivets. The pins and rivets pass sequentially through the high-pressure sampling component 104 and the high-pressure switch 101 to achieve the connection. Generally, two fasteners are used to connect the high-pressure switch 101 and the high-pressure sampling component 104 to prevent the high-pressure sampling component 104 from deflecting during the connection process. Figure 24 As shown, when the high-voltage bar 101 and the high-voltage sampling component 104 are connected by at least two fasteners, the distance K between two adjacent fasteners is greater than or equal to 3mm.

[0202] For example, the high-pressure sampling component 104 and the high-pressure bar 101 can be connected by at least two fasteners, and after the two are connected, the high-pressure sampling component 104 and the high-pressure bar 101 are integrally formed into the base assembly 10.

[0203] Please refer to Figures 23 to 26 In one embodiment, the high-voltage sampling component 104 includes an embedded sampling component 105, at least a portion of which is embedded in the base housing 10p. The embedded sampling component 105 includes a fifth end 105a and a sixth end 105b. The fifth end 105a is connected to the high-voltage switch 101 and is injection molded together with the base housing 10p, and is fixedly connected to the base housing 10p by embedding. Meanwhile, the sixth end 105b of the high-voltage sampling component 104 extends to the outside of the base assembly 10 for connection with the battery management main control board 30.

[0204] Understandably, the embedded sampling component 105 is partly injection molded together with the base housing 10p. For example, its fifth end 105a is embedded in the base housing 10p, while its sixth end 105b is located on the outside of the base housing 10p for connection with the battery management main control board 30.

[0205] Optionally, the fifth end 105a is connected to the high-pressure plate 101, and the two can be connected by welding, riveting, screwing, pressing, bonding, or other methods. For example, the fifth end 105a and the high-pressure plate 101 can be connected by at least two fasteners to reduce the angular displacement between the fifth end 105a and the high-pressure plate 101, thereby ensuring the reliability of the connection; and after the two are connected, the embedded sampling component 105 and the high-pressure plate 101 are integrally formed into the base housing 10p.

[0206] Thus, the high-pressure sampling component 104 is fixed in an integral manner with the base housing 10p, which can reduce the corresponding installation process, save more space, and improve the connection reliability.

[0207] Please refer to Figure 26 , Figure 31 and Figure 32 In one embodiment, when the effective length M of the embedded sampling element 105 in the base assembly 10 is greater than or equal to 15 mm, at least two core holes 10b need to be provided on the base assembly 10. Each core hole 10b corresponds to the embedded sampling element 105 and is spaced apart along the length direction of the embedded sampling element 105. The distance between two adjacent core holes 10b is N, where 10 mm ≤ N ≤ 30 mm.

[0208] Understandably, the embedded sampling element 105 is typically a relatively long and thin copper foil. When the copper foil is injection molded together with the base assembly 10, it is easily deformed by the impact of the injection fluid, especially when the copper foil is long. Here, the effective length of the embedded sampling element 105 is its length injected into the base assembly 10. When the effective length M of the embedded sampling element 105 embedded in the base assembly 10 is greater than or equal to 15 mm, the degree of deformation due to the impact of the injection fluid is greater. Therefore, when the base assembly 10 is injection molded, a core is set at the corresponding position in the injection mold to support the embedded sampling element 105. After the injection molding is completed, the core is pulled out, thus forming core holes 10b on the base assembly 10. The core holes 10b are spaced apart along the length direction of the embedded sampling element 105.

[0209] Furthermore, based on the effective length M of the embedded sampling element 105, the spacing N of each core hole 10b can be set, and the spacing N of each core hole 10b can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, or 30mm. Moreover, when the effective length M of the embedded sampling element 105 is large, two or more core holes 10b can be provided along the insertion length direction of the embedded sampling element 105.

[0210] Thus, in order to accommodate the battery management main control board 30 being far from the high voltage bar 101, the effective length M of the embedded sampling component 105 can be increased accordingly. At the same time, a corresponding number of core holes 10b are provided on the base assembly 10 to ensure that the longer embedded sampling component 105 receives the corresponding support force during the injection molding process, thereby reducing the risk of deformation.

[0211] In this embodiment, the high-voltage sampling component 104 can be a sheet-like, wire-like, or filament-like metal component capable of transmitting electrical signals, such as a copper sheet, nickel sheet, or copper wire. Preferably, the high-voltage sampling component 104 can be a copper sheet, using the same material as the high-voltage bar sheet 101 for easy connection.

[0212] Furthermore, the high-pressure sampling component 104 can be bent into shape to facilitate assembly and connection. In one embodiment, the embedded sampling component 105 is a copper sheet, and a bending portion is provided between the fifth end 105a and the sixth end 105b of the embedded sampling component 105, the bending portion making the fifth end 105a and the sixth end 105b approximately perpendicular.

[0213] Understandably, the two opposite ends of the bend are perpendicularly connected to or approximately perpendicularly connected to the fifth end 105a and the sixth end 105b, respectively. This can effectively shorten the wiring length and reduce the length of the buried sampling component 105.

[0214] Please refer to Figures 23 to 26 In one embodiment, the high-voltage switch 101 includes an embedded switch 102, which includes a first end 1021, an embedded connecting section 1022, and a second end 1023. The first end 1021 is connected to the high-voltage terminal 23 of the high-voltage relay 20. The embedded connecting section 1022 is embedded in the plastic of the base housing 10p. The second end 1023 is electrically connected to other electrical components, battery packs, or power circuits. The first end 1021 is located on one side of the base assembly along the height direction of the base assembly 10, and the second end 1023 is located on the other side of the base assembly 10 along the height direction of the base assembly 10.

[0215] Optionally, the direction from the second end 1023 to the first end 1021 is the direction in which the electronic control device is installed in the housing; the fifth end 105a of the buried sampling component 105 is connected to the buried connecting section 1022 of the buried bar sheet 102, and is located on the same side of the base assembly along the height direction of the base assembly as the first end 1021.

[0216] Further, please refer to Figures 17 to 20The first end 1021 includes a first side surface 1021a and a second side surface 1021b along its thickness direction. The first side surface 1021a includes a metal exposed surface 1021a1 and a metal embedded surface 1021a2. The metal exposed surface 1021a1 of the first side surface 1021a abuts against the high voltage terminal 23 of the high voltage relay 20. The metal embedded surface 1021a2 of the first side surface 1021a is embedded in the plastic of the base housing 10p. The base housing 10p is provided with a terminal connection hole 10r. The metal exposed surface 1021a1 is located in the terminal connection hole 10r. The high voltage terminal 23 is connected to the metal exposed surface 1021a1 at the terminal connection hole 10r, thereby realizing the electrical connection between the two. The fifth end 105a of the embedded sampling component 105 is stacked on the first side 102a and is embedded in the plastic of the base housing 10p together with the metal embedded surface 1021a2, that is, the fifth end 105a is stacked on the metal embedded surface 1021a2.

[0217] Understandably, the fifth end 105a of the embedded sampling component 105 is connected to the metal embedded surface 1021a2. Therefore, placing the fifth end 105a on the inner side of the embedded bar plate 102 can improve the connection reliability of the fifth end 105a. Furthermore, the fifth end 105a and the metal embedded surface 1021a2 are embedded together in the plastic of the base housing 10p. The plastic of the base housing 10p can be used to protect the connection surface between the embedded sampling component 105 and the embedded bar plate 102, thereby improving the connection effect. At the same time, in the scheme where the second side 1021b needs to be cooled, the fifth end 105a is not connected to the surface of the second side 1021b, so it will not affect the heat exchange area between the second side 1021b and the heat exchanger 400, which is beneficial to improving the heat exchange efficiency of the second side 1021b.

[0218] Simultaneously, the sixth end 105b is located on one side of the electronic control device along the width direction, and along the width direction of the electronic control device, the battery management main control board, the sixth end 105b, and the high-voltage relay 20 are arranged in sequence.

[0219] Please refer to this. Figure 20 and Figure 25 The length L of the sixth end 105b ranges from 8 to 15 mm. The length L of the sixth end 105b is the length of the sixth end 105b extending in the direction away from the fifth end 105a. Controlling the length within 15 mm can prevent the sixth end 105b from being too long and causing deformation. At the same time, having a length greater than 8 mm can facilitate connection with the battery management main control board 30. Optionally, the length of the sixth end 105b can be 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, or 15 mm, and can also be adjusted according to actual usage requirements.

[0220] Please refer to Figure 25 and Figure 26 In one embodiment, a support member 32 is provided between the sixth end 105b of the embedded sampling member 105 and the battery management main control board 30. The battery management main control board 30 and the support member 32 are sequentially inserted through screws, pins and other fasteners to connect with the sixth end 105b.

[0221] Understandably, the support member 32 can be installed on the battery management main control board 30 by welding, bonding, pressing, etc., thereby forming a connection with the battery management main control board 30. Then, fasteners are used to lock the sixth end 105b, the support member 32, and the battery management main control board 30 to achieve high-voltage sampling.

[0222] For example, the support member 32 includes a first part 321 and a second part 322 disposed on the first part 321. The outer diameter of the second part 322 is smaller than the outer diameter of the first part 321. The second part 322 is connected to the battery management main control board 30, while the first part 321 abuts against the sixth end 105b.

[0223] In this way, by sequentially fastening the battery management main control board 30, the support 32, and the embedded sampling component 105 with fasteners, the connection stability is higher and it can better meet the requirements of automated assembly.

[0224] In electronic control devices, high-voltage relays are typically mounted facing upwards on the base assembly. "Facing upwards" means that the high-voltage terminals of the high-voltage relay face the same direction as the top of the base assembly. In other words, when the electronic control device is placed inside the battery compartment, the high-voltage terminals of the facing high-voltage relay are away from the bottom of the battery compartment. This makes heat exchange for the high-voltage relay a significant problem.

[0225] In view of this, this application provides an electronic control device including a base assembly and a high-voltage relay 20. A mounting groove is formed on the base assembly, the bottom end of the mounting groove corresponds to the bottom end of the base assembly, and the opening end of the mounting groove corresponds to the top end of the base assembly. The high-voltage terminal 23 of the high-voltage relay 20 is placed at the bottom end of the mounting groove, thereby forming the high-voltage relay 20 upside down on the base assembly. This satisfies the requirement that the high-voltage terminal 23 of the high-voltage relay 20 and the bottom end of the base assembly face the same direction, thereby satisfying the requirement that the high-voltage relay 20 is heat-exchanged by the bottom end of the base assembly.

[0226] Please refer to Figure 4 , Figures 28 to 32In one embodiment, the base assembly 10 has a mounting groove 10a, the bottom end of the mounting groove 10a corresponds to the bottom end of the base assembly 10, the opening end of the mounting groove 10a corresponds to the top end of the base assembly 10, the high voltage relay 20 is placed upside down in the mounting groove 10a, the high voltage terminal 23 of the high voltage relay 20 is oriented towards the bottom end of the mounting groove 10a, and the high voltage terminal 23 is connected to the high voltage switch 101.

[0227] Understandably, the high-voltage terminal 23 of the high-voltage relay 20 and the high-voltage switch 101 are the locations in the electrical control device 100 where the heat generation is the greatest. Therefore, by inverting the high-voltage relay 20 so that its high-voltage terminal 23 faces downward, the heat generation can be concentrated at the bottom of the base assembly 10. Thus, the heat generation of the electrical control device 100 is concentrated at the bottom of the base assembly 10, providing structural design convenience for centralized heat exchange.

[0228] Please refer to Figures 28 to 32 In one embodiment, a support structure 10c is provided on the wall of the mounting groove 10a. The support structure 10c extends toward the high voltage relay 20. Two adjacent support structures 10c, the wall of the mounting groove 10a and the surface of the high voltage relay 20 enclose a receiving space, and the receiving space is filled with colloid 10k.

[0229] Understandably, the structural form of the support structure 10c includes, but is not limited to, protruding ribs, protruding pillars, and protrusions formed on the groove wall of the mounting groove 10a. Furthermore, depending on actual usage requirements, the accommodating spaces may or may not be interconnected. The colloid 10k, when uncured, is a fluid that can fill the accommodating spaces, ensuring no gap between the surface of the high-voltage relay 20 and the groove wall of the mounting groove 10a. After filling the accommodating spaces for a period of time, it will cure and solidify into a non-flowing colloid 10k.

[0230] For example, the support structure 10c consists of multiple ribs formed on the wall of the mounting groove 10a. The end of each rib away from the wall of the mounting groove 10a is used to limit the outline of the high-voltage relay 20 to achieve initial positioning. At the same time, two adjacent ribs, the wall of the mounting groove 10a, and the surface of the high-voltage relay 20 enclose a receiving space. The operator can insert the glue injection end of the glue injection structure into the groove of the mounting groove 10a and inject glue into the receiving space, thereby ensuring that the high-voltage relay 20 does not move or moves relatively little within the mounting groove 10a.

[0231] Of course, in other implementations, the ribs can be non-connected structures, or corresponding notches or openings can be made on the ribs to connect the various accommodating spaces, thereby improving the efficiency of glue injection.

[0232] In this way, the initial positioning can be achieved using each support structure 10c to meet the installation requirements of the high-voltage relay 20. At the same time, colloid 10k is injected into the accommodating space to fix the high-voltage relay 20 a second time, thereby reducing the probability of relative movement of the high-voltage relay 20 in the mounting groove 10a, thus improving the connection stability of the high-voltage relay 20 on the base assembly 10, and also making the connection between the high-voltage terminal 23 of the high-voltage relay 20 and the high-voltage plate 101 more stable.

[0233] Alternatively, in addition to good flowability, colloid 10k may also have good thermal conductivity and insulation properties.

[0234] Understandably, the colloid 10k can also be used to carry away some of the heat generated by the high-voltage relay 20. Compared with using air for heat conduction, the colloid 10k is more efficient at conducting heat, which helps to reduce the temperature rise of the high-voltage relay 20.

[0235] In other embodiments, depending on actual usage requirements, adhesive can be applied to at least two outer surfaces of the high-voltage relay 20 that are opposite to the mounting groove 10a to form an adhesive layer.

[0236] Optionally, the injection height of the adhesive in the mounting groove 10a is 20mm to 35mm. Here, the injection height of the adhesive in the mounting groove 10a can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, etc.

[0237] For example, the high-voltage relay 20 has a hexahedral structure. In addition to the surface that extends out of the mounting groove 10a, there are a total of five surfaces that can be placed in the mounting groove 10a. Therefore, when applying adhesive, at least two surfaces should be selected for adhesive application.

[0238] In one embodiment, one end of the support structure 10c that is away from the groove wall of the mounting groove 10a is in clearance fit with the surface of the high-voltage relay 20.

[0239] Understandably, clearance fit means that there is still a certain rotational margin between the high-voltage relay 20 and the base assembly 10. In particular, when the high-voltage relay 20 is connected to the high-voltage switch 101 by screws, the screws will inevitably drive the high-voltage relay 20 to rotate synchronously during the tightening process. Therefore, the two are in clearance fit, which can just meet the high-precision alignment requirements between the high-voltage relay 20 and the high-voltage switch 101.

[0240] Of course, in other embodiments, the end of the support structure 10c that is away from the groove wall of the mounting groove 10a is in an interference fit with the surface of the high-voltage relay 20.

[0241] Understandably, interference fit means that there is no space between the high-voltage relay 20 and the base assembly 10. That is, once the high-voltage relay 20 is installed in the mounting groove 10a, it is limited by the support structures 10c and the high-voltage relay 20 cannot rotate relative to the base assembly 10. This installation method is suitable for situations where the alignment accuracy requirements between the high-voltage terminal 23 of the high-voltage relay 20 and the high-voltage plate 101 are relatively low. For example, the high-voltage terminal 23 of the high-voltage relay 20 is welded to the welding plane of the high-voltage plate 101.

[0242] Please refer to Figure 29 and Figure 30 In one embodiment, a barrier 10d is provided on the bottom wall of the mounting groove 10a. The barrier 10d surrounds the high-voltage terminal 23 of the high-voltage relay 20, and one end of the barrier 10d away from the bottom wall of the mounting groove 10a abuts against the high-voltage relay 20.

[0243] Understandably, when the high-voltage switch 101 is connected to the high-voltage terminal 23 of the high-voltage relay 20 via fasteners such as screws and pins, a corresponding hole will be formed in the base assembly 10. However, this hole is connected to the accommodating space. Therefore, before the adhesive 10k solidifies, there is a risk of overflowing from the hole in the base assembly 10. Thus, it is necessary to install a barrier 10d on the base assembly 10 to block the adhesive 10k and reduce the probability of overflow. In this way, by adding the barrier 10d, the risk of overflow can be reduced, thereby improving the cleanliness of the connection between the high-voltage terminal 23 of the high-voltage relay 20 and the high-voltage switch 101.

[0244] Please refer to Figure 12 , Figure 13 and Figure 30 In one embodiment, the high-voltage relay 20 includes a relay body 24 and an upper housing assembly 25. The upper housing assembly 25 includes a magnet frame 251 and a magnetic element 252 disposed on the magnet frame 251. A mounting post 10e is provided on the bottom wall of the mounting groove 10a. A plug hole 10f is provided in the mounting post 10e. The magnet frame 251 is inserted into the plug hole 10f and surrounds the periphery of the relay body 24. The magnetic element 252 and the relay body 24 are in clearance fit.

[0245] Understandably, the high-voltage relay 20 provided in this embodiment is a high-voltage relay 20 after the casing has been removed. Therefore, the relay body 24 and the upper housing assembly 25 of the high-voltage relay 20 are exposed. Specifically, the magnet frame 251 is used to fix the magnetic component 252, and the magnet frame 251 is fixed to the insertion hole 10f of the mounting post 10e so that the magnetic component 252 and the relay body 24 are in clearance fit.

[0246] Thus, the high-voltage relay 20 after being unpacked is lighter, which in turn makes the overall weight of the electronic control device 100 lighter and its size smaller.

[0247] For example, the magnetic steel frame 251 includes a first plate 2511 and second plates 2512 disposed on opposite sides of the first plate 2511. The two second plates 2512 are bent toward each other. A magnetic element 252 is disposed on the first plate 2511. Each of the two second plates 2512 is provided with a support arm 2513. The support arm 2513 is inserted into the insertion hole 10f on the mounting post 10e. The support arm 2513 and the insertion hole 10f are in an interference fit.

[0248] In the actual installation process, the magnetic component 252 is first placed on the first plate 2511, and then the entire magnetic steel frame 251 is placed on the installation mechanism. Then, the support arm 2513 of the magnetic steel frame 251 is inserted into the corresponding insertion hole 10f by mechanical force. Since the support arm 2513 and the insertion hole 10f are in an interference fit, it is difficult to pull the support arm 2513 out of the insertion hole 10f.

[0249] Specifically, the support arm 2513 has a square cross-section and has two long side walls 2513a and two short side walls 2513b. Similarly, the insertion hole 10f is a square insertion hole 10f that is adapted to it. Therefore, it is possible to choose an interference fit between the two long side walls 2513a and the inner wall of the square insertion hole 10f, or it is possible to choose an interference fit between the two short side walls 2513b and the inner wall of the square insertion hole 10f.

[0250] Please refer to Figure 29 and Figure 30 In one embodiment, a clearance notch 10j is provided on the mounting post 10e to avoid the end face of the relay body 24, thereby reducing the probability of the end face of the relay body 24 colliding with the mounting post 10e.

[0251] Understandably, the mounting post 10e is located on the bottom wall of the mounting groove 10a, and will interfere with the relay body 24 in its height direction. In order to reduce the probability of such interference, an avoidance notch 10j can be provided on the mounting post 10e to reduce part of the height of the mounting post 10e.

[0252] Of course, in other embodiments, while ensuring that the insertion hole 10f has sufficient depth, the overall height of the mounting post 10e can also be reduced to avoid this obstacle.

[0253] Please refer to Figure 3 , Figure 4 and Figure 33In one embodiment, the electronic control device 100 includes a heat-conducting element 41, which is disposed at the bottom end of the base assembly 10. The heat-conducting element 41 is used to conduct the heat of the high-pressure plate 101 to the heat exchanger 400 for heat dissipation.

[0254] Understandably, the heat-conducting component 41 is a structural component with good thermal conductivity, and the material of the heat-conducting component 41 can be resin, rubber, silicone, etc. Furthermore, the function of the heat-conducting component 41 is to transfer the working heat generated by the high-pressure bar 101 in order to improve the heat exchange efficiency of the high-pressure bar 101.

[0255] Thus, the addition of the heat-conducting component 41 facilitates centralized heat exchange in the high-pressure bar 101, improves heat exchange efficiency, and provides structural support for the electronic control device 100 to directly use the heat exchange mechanism of the battery device. This allows the side of the electronic control device 100 with the heat-conducting component 41 to be directly placed on the heat exchange mechanism of the battery device for heat exchange processing.

[0256] Please refer to Figure 4 , Figure 33 , Figure 34 and Figure 35 In one embodiment, the electronic control device 100 further includes a bottom shell 40, which covers the bottom end of the base assembly 10, and a heat-conducting element 41 is disposed on the side of the bottom shell 40 away from the base assembly 10; the high-pressure plate 101 is at least partially exposed at the bottom end of the base assembly 10, and the bottom shell 40 has a first opening 40a so that the high-pressure plate 101 at least partially abuts against the heat-conducting element 41.

[0257] Understandably, since the high-pressure heat exchanger 101 is partially exposed at the bottom of the base assembly 10, the exposed portion of the high-pressure heat exchanger 101 is susceptible to moisture corrosion. Therefore, the high-pressure heat exchanger 101 located on the base assembly 10 can be raised via the base shell 40 to reduce the risk of direct moisture corrosion. Furthermore, the first opening 40a on the base shell 40 allows the high-pressure heat exchanger 101 to directly contact the heat-conducting element 41, thereby improving the heat transfer efficiency between the high-pressure heat exchanger 101 and the heat-conducting element 41. Thus, adding the base shell 40 improves the waterproof performance of the high-pressure heat exchanger 101.

[0258] Please refer to Figure 34 and Figure 35 In one embodiment, the high-voltage switch 101 is connected to the high-voltage terminal 23 of the high-voltage relay 20 by a flat-head bolt 106, forming a recess on the end face of the high-voltage switch 101, wherein the end face of the flat-head bolt 106 is smaller than or equal to the end face of the high-voltage switch 101.

[0259] Understandably, the end face of the flat-head bolt 106 refers to the exposed portion of the flat-head bolt 106 after it is tightened, and the end face of the high-pressure plate 101 refers to the portion of the high-pressure plate 101 exposed on the base assembly 10. When the end face of the flat-head bolt 106 is less than or equal to the end face of the high-pressure plate 101, the tightness of the contact between the end face of the high-pressure plate 101 and the heat-conducting element 41 is improved.

[0260] Of course, in other embodiments, the high-voltage plate 101 can also be connected to the high-voltage terminal 23 of the high-voltage relay 20 by bolts, and the head of such bolts is placed in the recess, which can also improve the tightness of the contact between the end face of the high-voltage plate 101 and the heat-conducting element 41.

[0261] In the electrical control device, the bottom shell is connected to the base assembly by means of plug-in, snap-fit ​​or screw connection. In order to meet certain heat exchange requirements, the bottom shell should have a corresponding opening to allow the exposed high-pressure bar 101 to exchange heat with the heat exchanger 400. However, this also allows external moisture to enter the bottom shell through the opening, thereby affecting the insulation of the high-pressure bar 101.

[0262] In view of this, the electronic control device provided in the embodiments of this application adds an insulating member 42 to the bottom shell, which is used to seal the opening on the bottom shell, while also satisfying the function of heat conduction.

[0263] Please refer to Figure 4 and Figure 33 In one embodiment, the electronic control device 100 includes an insulating member 42 disposed between the bottom shell 40 and the heat-conducting member 41. The insulating member 42 is used to provide corresponding insulation protection for the high-voltage plate 101.

[0264] Understandably, gaps may exist between the bottom shell 40 and the heat-conducting component 41, allowing external moisture to enter the bottom shell 40 through these gaps and subsequently corrode the exposed portion of the high-voltage transformer 101. Therefore, adding an insulating component 42 between the bottom shell 40 and the heat-conducting component 41 can effectively improve the insulation and protection performance of the high-voltage transformer 101.

[0265] For example, such as Figure 4 As shown, the insulating component 42 includes an insulating sheet 421 and an insulating flange 422 disposed on the edge of the insulating sheet 421. The insulating sheet 421 is disposed between the bottom shell 40 and the heat-conducting component 41, and the insulating flange 422 surrounds the side wall of the bottom shell 40. In this way, the insulating component 42 is similar to a box-shaped structure with an open end. By sleeved, it achieves insulation treatment of the high-voltage transformer 101. At the same time, the insulating flange 422 can also achieve a certain waterproof function. That is, the waterproof height of the bottom shell 40 is the height from the insulating flange 422 to the insulating sheet 421.

[0266] Please refer to Figure 30 In other embodiments, a sealing groove 40b is formed on the end of the bottom shell 40 facing the heat conduction element 41. A sealing element is provided in the sealing groove 40b. The sealing element can be a rubber ring, glue, etc. Optionally, sealant can be filled in the sealing groove 40b to waterproof the bottom shell 40 and the heat conduction element 41. In this case, the insulating element 42 is not required.

[0267] Please refer to Figure 3 and Figure 4 In one embodiment, the electronic control device 100 includes a cover plate 50, which includes a top cover portion 51 and may further include a side cover portion 52 connected to the top cover portion 51. The top cover portion 51 covers the top of the base assembly 10 and abuts against the high voltage relay 20, while the side cover portion 52 covers the battery management main control board 30.

[0268] Understandably, the connection between the top cover 51 of the cover plate 50 and the base assembly 10 may include, but is not limited to, threaded connection, snap-fit, plug-in connection, etc., and the connection between the side cover 52 of the cover plate 50 and the battery management main control board 30 may be threaded connection, snap-fit, etc.

[0269] Here, the top of the cover plate 50 is placed on the top of the base assembly 10 to apply a downward force to the high-voltage relay 20, thereby improving the stability of the high-voltage relay 20 within the mounting groove 10a. The side wall of the cover plate 50 is placed on the periphery of the base assembly 10 to protect the battery management main control board 30.

[0270] Please refer to Figure 4 In one embodiment, an abutment 43 is also provided between the top cover 51 and the high-voltage relay 20.

[0271] Understandably, the abutment 43 has a certain deformation capacity or a certain elasticity. For example, the abutment 43 may be made of hard rubber, silicone, or plastic.

[0272] The function of the abutment 43 is to fill the gap between the cover plate 50 and the top of the high-voltage relay 20, thereby allowing the cover plate 50 to apply pressure to the high-voltage relay 20 more stably and improving the stability of the high-voltage relay 20 fixed to the base assembly 10. At the same time, the abutment 43 can reduce hard contact between the top cover 51 and the high-voltage relay 20, providing a certain buffering effect.

[0273] Furthermore, a support rib 53 is provided on the cover plate 50, and the support rib 53 is disposed opposite to the abutment member 43; the support rib 53 is disposed on the side of the cover plate 50 away from the abutment member 43.

[0274] The cover plate 50 is also provided with a through hole, and the base assembly 10 is correspondingly provided with a mounting hole. It also includes a fastener, which is threaded through the through hole and connected to the mounting hole. The mounting hole is provided on both sides of the high voltage relay 20 along the width and / or length direction. Furthermore, the cover plate 50 is provided with a countersunk plate 54, and the mounting hole is provided in the countersunk plate 54, so that at least a portion of the head of the fastener is recessed into the countersunk plate 54, so as to avoid affecting the assembly of other parts in terms of height.

[0275] In the aforementioned related products, the housing of the CSC (Cell Supervisory Circuit) also occupies space inside the battery device. Based on this, in the embodiments of this application, the electronic control device 100 also includes a battery cell monitoring circuit board 60, which is electrically connected to the battery management main control board 30.

[0276] Understandably, the battery cell monitoring circuit board 60 is used to monitor the working status of the battery cells, including parameters such as voltage and temperature. The battery cell monitoring circuit board 60 can be connected to the top of the cover plate 50 via fasteners such as screws and pins. The battery cell monitoring circuit board 60 and the battery management main control board 30 can be electrically connected via a wiring harness, or connected via direct connection methods such as terminal plug-in or bolt fastening.

[0277] The battery cell monitoring circuit board can be placed on the periphery of the electronic control device, or it can be installed on the top surface of the electronic control device along the height direction. Optionally, the battery cell monitoring circuit board and the battery management main control board are located on two adjacent sides of the electronic control device, or on two opposite sides of the electronic control device.

[0278] Please refer to Figure 3 and Figure 4 In one embodiment, the electronic control device 100 can be a cuboid or approximately a cuboid, wherein the cuboid includes four sides with a larger area. The battery cell monitoring circuit board 60 and the battery management main control board 30 are respectively located on two adjacent sides of the four sides with a larger area. The battery cell monitoring circuit board 60 is provided with a first connector, the plug of the first connector facing the side of the battery management main control board 30; the battery management main control board 30 is provided with a second connector, the plug of the second connector facing the side of the battery cell monitoring circuit board 60; thereby facilitating the communication connection between the two circuit boards.

[0279] Furthermore, the interface of the first connector faces the side of the battery cell pack inside the battery device, thereby facilitating communication connection with the battery cell pack.

[0280] In the embodiments of this application, the electronic control device 100 also includes a cover plate 50. Along the height direction of the electronic control device 100, a battery cell monitoring circuit board 60, a cover plate 50, and a high-voltage relay 20 are arranged in sequence. In this way, the high-voltage electrical components and the low-voltage sampling components are arranged separately, thereby avoiding the influence of high and low voltage.

[0281] Furthermore, the battery cell monitoring circuit board 60 can be integrated on the cover plate 50, which can further reduce the overall size of the electrical system and obtain a more integrated electronic control device 100, thereby freeing up more space for battery cell components within the battery device.

[0282] In one embodiment, a nut post is provided on the cover plate 50, and the battery cell monitoring circuit board 60 is mounted on the nut post.

[0283] Optionally, such as Figure 4 As shown, in one embodiment, the electronic control device 100 further includes a top cover 61, which covers the battery cell monitoring circuit board 60. The battery cell monitoring circuit board 60 is located between the top cover 61 and the cover plate 50. The top cover 61 is connected to the cover plate 50, and a second opening 62 is provided on the top cover 61 for each connector to be exposed.

[0284] Here, the top cover 61 is used to protect the battery cell monitoring circuit board 60, and the connection method between the top cover 61 and the cover plate 50 includes, but is not limited to, threaded connection, plug-in, snap-fit, etc. The plug of the peripheral device can be plugged into the connector on the battery cell monitoring circuit board 60 through the second opening 62.

[0285] Electrical control devices also include shunts, which are also called shunt resistors and are electronic devices used to measure current in a circuit. In related products, shunts are connected to the BMU and relays via corresponding wiring harnesses, leading to low integration.

[0286] Please refer to Figures 4 to 6 In one embodiment, the electronic control device 100 includes a shunt 70, which includes a metal terminal section 71 and a signal transmission section 72. The metal terminal section 71 includes metal terminals at both ends and a shunt resistor section. The shunt resistor section is disposed between the two metal terminals and soldered to the two metal terminals. The signal transmission section 72 is used to transmit electrical signals from both ends of the shunt 70 to the battery management main control board 30. One end of the metal terminal section 71 is electrically connected to the high-voltage relay 20, and the other end of the metal terminal section 71 is electrically connected to the battery cell group, thereby collecting the current output by the battery group. The signal transmission section 72 and the battery management main control board 30 can be soldered together to realize signal transmission.

[0287] Furthermore, the circuitry of the signal transmission section 72 of the shunt 70 is integrated onto the battery management main control board 30. That is, this circuitry is directly mounted on the battery management main control board 30, or it can share circuitry with the battery management main control board 30. Optionally, the metal terminal section 71 is connected to the base assembly 10 via a copper busbar. A portion of the copper busbar is threadedly connected to the metal terminal section 71, and another portion of the copper busbar is connected to the battery cell group via other copper busbars, and is also threadedly connected to the base assembly 10.

[0288] Of course, in other embodiments, the shunt 70 includes a metal terminal portion 71 and a signal transmission portion 72, the signal transmission portion 72 being integrated on the battery cell monitoring circuit board 60.

[0289] Please refer to Figure 4 , Figure 28 and Figure 35 In one embodiment, the electronic control device 100 includes a pre-charge relay 80 and a pre-charge resistor 81. The pre-charge relay 80 is disposed on the battery management main control board 30, and the position of the pre-charge relay 80 on the battery management main control board 30 is far away from each low-voltage transmission component 31. The pre-charge resistor 81 is electrically connected to the battery management main control board 30 through one of the high-voltage sampling components 104. The base assembly 10 is provided with a first cavity 10g for accommodating the pre-charge relay 80 and a second cavity 10h for accommodating the pre-charge resistor 81.

[0290] Understandably, the terminals of the precharge relay 80 and the precharge resistor 81 are both integrated on the battery management main control board 30 to form a precharge circuit. At the same time, the precharge relay 80 and the precharge resistor 81 are respectively housed in the cavity on the base assembly 10 to achieve spatial overlap, thereby improving the integration of the electronic control device 100 and enabling the overall size of the electronic control device 100 to be miniaturized.

[0291] Optionally, such as Figure 4 and Figure 9 As shown, the precharge relay 80 can be placed at one end of the battery management main control board 30 in the length direction, thus keeping it away from other sampling terminals. At the same time, since no other components are placed around the precharge relay 80, the high-voltage sampling component 104, which is electrically connected to the precharge resistor 81, has little impact on the low voltage of the main positive and main negative high-voltage relays 20.

[0292] Optionally, such as Figure 32 As shown, the pre-charge resistor 81 is at least partially exposed at the bottom end of the base assembly 10, and the exposed portion of the pre-charge resistor 81 abuts against the heat-conducting element 41. In this way, the heat exchange efficiency of the pre-charge resistor 81 can be increased by the heat-conducting element 41, and at the same time, centralized heat exchange can be achieved on the pre-charge resistor 81.

[0293] Please refer to Figure 4 , Figure 28 , Figure 33 and Figure 35 In one embodiment, the electronic control device 100 includes a fuse 90 and a fusible copper busbar 91. The base assembly 10 is provided with a third cavity 10i for accommodating the fuse 90 and the fusible copper busbar 91. At least a portion of the fusible copper busbar 91 is exposed at the bottom end of the base assembly 10, and the exposed portion of the fusible copper busbar 91 abuts against the heat-conducting element 41.

[0294] In this way, the heat exchange efficiency of the pre-charge resistor 81 can be increased by the heat-conducting component 41, and at the same time, centralized heat exchange can be achieved on the pre-charge resistor 81.

[0295] In one specific embodiment, refer to Figures 3 to 35 As shown, the electronic control device 100 provided in this application includes a base assembly 10, a high-voltage relay 20, a battery management main control board 30, a bottom shell 40, an insulating component 42, a cover plate 50, a top cover 61, a battery cell monitoring circuit board 60, a shunt 70, a pre-charge relay 80, a pre-charge resistor 81, a fuse 90, a fusible copper busbar 91, a high-voltage switch 101, and a high-voltage sampling component 104.

[0296] A low-voltage transmission component 31 is provided on the battery management main control board 30, and a low-voltage terminal 21 is provided on the high-voltage relay 20. One end of the low-voltage transmission component 31 is connected to the battery management main control board 30, and the other end extends out of the battery management main control board 30 and connects to the low-voltage terminal 21 on the high-voltage relay 20. Thus, the low-voltage transmission component 31 replaces the socket and the wire harness with plugs at both ends on the battery management main control board in related technologies, and the low-voltage terminal 21 replaces the connector socket on the high-voltage relay 20, thereby simplifying the parts, reducing the probability of component failure, and greatly improving the space utilization rate.

[0297] The low-voltage transmission component 31 can be a sheet, wire, or wire-shaped metal component capable of transmitting electrical signals, such as a copper sheet, nickel sheet, copper wire, or aluminum wire.

[0298] One end of the low-voltage transmission component 31 is fixedly connected to the battery management main control board 30 by welding, bonding, or threaded connection. Copper sheet can be used as the low-voltage transmission component 31, and one end is fixed to the battery management main control board 30 by welding. The other end of the low-voltage transmission component 31 extends out of the battery management main control board 30, and a pad area or mounting hole, mounting groove, or other structure is provided at the end to connect to the low-voltage terminal 21 on the high-voltage relay 20.

[0299] The low-voltage transmission component 31 can be located at the edge of the battery management main control board 30. Optionally, multiple low-voltage transmission components 31 can be arranged sequentially along the edge of the longest side of the battery management main control board 30 to facilitate connection with the low-voltage terminal 21 of the high-voltage relay 20. When multiple high-voltage relays 20 are located on one side of the battery management main control board 30 along the thickness direction, the low-voltage transmission components 31 can also be concentrated on one side of the battery management main control board along the thickness direction. Preferably, the low-voltage transmission component 31 extends toward the high-voltage relay 20.

[0300] The low-voltage transmission component 31 is sheet-shaped, and its length A extending out of the battery management main control board 30 ranges from 10mm to 20mm. For example, the length A of the low-voltage transmission component 31 extending out of the battery management main control board 30 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc. Meanwhile, the thickness B of the low-voltage transmission component 31 ranges from 0.5mm to 1.0mm to ensure that the low-voltage transmission component does not deform or bend; for example, the thickness B of the low-voltage transmission component 31 can be 0.5mm, 0.64mm, 0.8mm, 1.0mm, etc. Furthermore, the width C of the low-voltage transmission component is controlled within the range of 6mm to 10mm. For example, the width C of the low-voltage transmission component 31 can be 6mm, 7mm, 8mm, 9mm, 10mm, etc., to ensure the current-carrying area and the latching area of ​​the low-voltage transmission component 31. For example, a hole structure with a diameter of 4 mm can be opened on the low-voltage transmission component 31, and a screw with a diameter of M3 can be used to lock it to the low-voltage terminal 21.

[0301] The high-voltage relay 20 used in the battery device 1001 is usually an electromagnetic relay. The two low-voltage terminals 21 on the high-voltage relay 20 are respectively the two ends of the electromagnetic coil inside the high-voltage relay 20. At least part of the metal of the two low-voltage terminals 21 is exposed on the high-voltage relay 20.

[0302] The low-voltage terminal 21 can be a sheet-like metal part, a column-like metal part, or a boss-like metal part, such as a copper sheet, an aluminum column, or a copper column.

[0303] The low-voltage terminal 21 and the low-voltage transmission component 31 can be electrically connected by means of welding, screwing, snap-fitting, plugging, etc. For example, a solder pad area can be provided on the low-voltage terminal 21, and the low-voltage transmission component 31 and the low-voltage terminal 21 can be connected by welding; optionally, such as Figure 7As shown, a crimp nut or weld nut is crimped to the bottom of the low-voltage terminal 21, and a hole structure is provided at one end of the low-voltage transmission component 31. A screw passes through the hole structure and is threadedly connected to the crimp nut or weld nut. Alternatively, the low-voltage transmission component 31 is a female terminal and the low-voltage terminal 21 is a male terminal, in which case the two can be connected by plugging in.

[0304] The low-voltage terminal 21 can extend outward from the end face of the high-voltage relay 20, or it can extend outward from the peripheral side of the high-voltage relay 20, or it can be directly disposed on the end face or the peripheral side. Specifically, the two low-voltage terminals 21 can extend side by side with a narrow gap, such as... Figure 9 The two low-voltage terminals 21 in the middle; or they can be wide-spaced extensions on the same side, such as Figure 12 As shown; it can also extend to the opposite side, such as Figure 13 As shown.

[0305] The exposed metal area of ​​the low-voltage terminal 21 can be controlled within 7.5 mm² to 8.5 mm². For example, the exposed metal area of ​​the low-voltage terminal 21 can be 7.5 mm², 7.6 mm², 7.7 mm², 7.8 mm², 7.9 mm², 8.0 mm², 8.1 mm², 8.2 mm², 8.3 mm², 8.4 mm², 8.5 mm², etc. Alternatively, the length D of the low-voltage terminal 21 can be 5 mm to 10 mm, and the length D of the low-voltage terminal 21 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc., and the width E of the low-voltage terminal 21 can be 5 mm to 10 mm, and the width D of the low-voltage terminal 21 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc., thereby ensuring that a certain connection area and current-carrying area are provided without occupying too much space. In addition, the minimum distance F (or creepage distance) between the exposed metal of the two low-voltage terminals 21 on the same high-voltage relay 20 must be controlled within the range of F > 3.0 mm to ensure that the electrical clearance requirements are met.

[0306] The direction of the low-voltage terminal 21 of the high-voltage relay 20 can be selected according to actual usage requirements. The high-voltage relay 20 has a cubic or near-cubic structure and should have two opposite end faces and a peripheral side connecting the two end faces. Therefore, the low-voltage terminal 21 can extend outward from the end face of the high-voltage relay 20, or the low-voltage terminal 21 can extend outward from the peripheral side of the high-voltage relay 20, or the low-voltage terminal can be directly set on the end face or the peripheral side. Furthermore, the base assembly 10 can be a cubic structure or a similar cubic structure. Therefore, as shown in the figure, in the XYZ spatial coordinate system, the X-axis direction is the width direction of the base assembly 10, the Y-axis direction is the length direction of the base assembly 10, and the Z-axis direction is the height direction of the base assembly 10. Then, the end face of the base assembly 10 refers to the top or bottom face perpendicular to the Z-axis direction (or, it can also be called the top or bottom); the peripheral side face of the base assembly 10 refers to the surface structure perpendicular to the XY plane; according to the extension direction of the low-voltage terminal 21 of the high-voltage relay 20, the battery management main control board 30 can be set on the peripheral side face of the base assembly 10, or the battery management main board can also be set on the end face of the base assembly 10.

[0307] The high-voltage relay 20 has a peripheral sidewall 20a, and the low-voltage terminal 21 extends outward from the peripheral sidewall 20a of the high-voltage relay 20. The low-voltage transmission component 31 is a sampling copper sheet, and the sampling copper sheet is connected to the low-voltage terminal 21 by fasteners.

[0308] Setting the low-voltage terminal 21 to extend perpendicularly to the plane of the battery management main control board 30 minimizes the distance between the low-voltage terminal 21 and the surface of the battery management main control board 30. It also provides a better installation perspective, which is beneficial for operators to perform plug-in and bolt-locking connection methods.

[0309] The low-voltage terminal 21 extends outward from the peripheral sidewall 20a of the high-voltage relay 20. The low-voltage terminal 21 includes a main body 211 connected to two adjacent peripheral sidewalls 20a of the high-voltage relay 20 and a partition 212 provided on the main body 211. The main body 211 is provided with two connection points 213 connected to the low-voltage transmission component 31, and the partition 212 is located between the two connection points 213.

[0310] The main body 211 is connected to the yoke inside the high-voltage relay 20. The main body 211 extends outward to transmit the corresponding electrical signal to the battery management main control board 30. The separator 212 is used to separate the two connection points 213 and increase the creepage distance of the two connection points 213.

[0311] The distance H from the low-voltage terminal 21 to the outer fillet 22 of the yoke of the high-voltage relay 20 is greater than or equal to 3mm.

[0312] The high-voltage switch 101 includes an embedded switch 102, which includes a first end 1021, an embedded connecting section 1022, and a second end 1023. The first end 1021 is connected to the high-voltage terminal 23 of the high-voltage relay 20. The embedded connecting section 1022 is embedded in the plastic of the base housing 10p and connects the first end 1021 and the second end 1023. The second end 1023 is electrically connected to other electrical components, battery packs, or power circuits.

[0313] The first end 1021 is located on one side of the base housing 10p along its own height direction (i.e., the Z direction), and the second end 1023 is located on the other side of the base housing 10p along its own height direction. Optionally, the direction from the second end 1023 to the first end 1021 is the direction in which the electronic control device 100 is installed in the housing of the battery device 1001.

[0314] The first end 1021 includes a first side 1021a and a second side 1021b along its own thickness direction. At least part of the metal of both the first side 1021a and the second side 1021b is exposed on the outer surface of the base housing 10p. The exposed metal of the first side 1021a abuts against the high-voltage terminal 23 of the high-voltage relay 20 to achieve electrical connection. The metal of the second side 1021b is exposed on the outer surface of the base housing 10p to facilitate heat dissipation through the exposed part.

[0315] A heat exchanger 400 can be installed on the second side 1021b to conduct heat from the high-pressure bar 101. A thermally conductive pad can also be sandwiched between the high-pressure bar 101 and the heat exchanger 400 to improve the insulation performance between the high-pressure bar 101 and the heat exchanger 400, while also improving the heat transfer performance.

[0316] Along the thickness of the first end 1021, the second side 1021b of the first end 1021 protrudes from the plastic base housing 10p by a height greater than 0.5mm.

[0317] The height of the second side 1021b of the first end 1021 protruding from the plastic base housing 10p is set to 1.0 mm. Here, it is possible to achieve contact between the second side 1021b of the first end 1021 and the heat exchanger 400, and to provide sufficient contact reliability between the two.

[0318] The second end 1023 includes a third side 1023a and a fourth side 1023b along its own thickness direction. The third side 1023a is exposed on the outer surface of the base housing 10p, and the fourth side 1023b is embedded in the base housing 10p.

[0319] A hole structure is provided at the second end 1023. The hole structure may be threaded inside, and fasteners such as screws and pins are passed through the hole structure to achieve connection with electrical components, battery packs or power circuits.

[0320] Along the thickness direction of the second end 1023, the height of the third side 1023a of the second end 1023 exposed above the plastic of the base housing 10p is >0.5mm.

[0321] The height of the third side 1023a of the second end 1023 protruding from the plastic base housing 10p is set to 1.0 mm. Here, the third side 1023a of the second end 1023 is able to come into contact with other electrical components, battery packs, and power circuits, and sufficient contact reliability is provided.

[0322] The embedded connecting section 1022 is embedded in the plastic of the base housing 10p, and the opposite ends of the embedded connecting section 1022 are perpendicular to the first end 1021 and the second end 1023, respectively.

[0323] The high-voltage relay 101 includes a loose relay 103, which includes a third end 1031, an intermediate connecting section 1032 and a fourth end 1033. The third end 1031 is connected to the high-voltage terminal 23 of the high-voltage relay 20, the fourth end 1033 is connected to the base housing 10p, and the intermediate connecting section 1032 connects the third end 1031 and the fourth end 1033.

[0324] The fourth end 1033 is connected to the base housing 10p by fasteners. Furthermore, the base housing 10p can be provided with threaded holes, and the fourth end 1033 is provided with through holes. Bolts are used to pass through the through holes and fix them to the threaded holes of the base housing 10p. Two through holes can be provided to improve the reliability of the connection.

[0325] The high-voltage relay 20 includes two high-voltage terminals 23, one of which is connected to the first end 1021 of the embedded plate 102, and the other high-voltage terminal 23 is connected to the third end 1031 of the loose plate 103.

[0326] The third end 1031 includes a fifth side 1031a and a sixth side 1031b along the thickness direction. The fifth side 1031a abuts against the high-voltage terminal 23 of the high-voltage relay 20 to achieve electrical connection. The sixth side 1031b is approximately in the same plane as the second side 1021b, or the height difference between the sixth side 1031b and the second side 1021b in the thickness of the base housing 10p is ≤1mm.

[0327] The height difference between the sixth side 1031b and the second side 1021b in terms of the thickness of the base housing 10p is ≤0.5mm.

[0328] The battery management main control board 30 is equipped with a high-voltage sampling component 104, and the high-voltage bar 101 is connected to the high-voltage sampling component 104.

[0329] The high-voltage sampling component 104 includes an embedded sampling component 105, at least a portion of which is embedded in the base housing 10p. The embedded sampling component 105 includes a fifth end 105a and a sixth end 105b. The fifth end 105a is connected to the high-voltage switch 101 and is injection molded together with the base housing 10p, and is fixedly connected to the base housing 10p by embedding. Meanwhile, the sixth end 105b of the high-voltage sampling component 104 extends to the outside of the base assembly 10 for connection with the battery management main control board 30.

[0330] The fifth end 105a is connected to the high-pressure plate 101, and the two can be connected by welding, riveting, screwing, pressing, bonding, etc. For example, the fifth end 105a and the high-pressure plate 101 can be connected by at least two fasteners to reduce the angular displacement between the fifth end 105a and the high-pressure plate 101, thereby ensuring the reliability of the connection; and after the two are connected, the embedded sampling component 105 and the high-pressure plate 101 are integrally formed into the base housing 10p.

[0331] When the effective length M of the embedded sampling element 105 is greater than or equal to 15mm, at least two core holes 10b need to be provided on the base assembly 10. Each core hole 10b corresponds to the embedded sampling element 105 and is spaced apart along the length direction of the embedded sampling element 105. The distance between two adjacent core holes 10b is N, where 10mm≤N≤30mm.

[0332] Furthermore, based on the effective length M of the embedded sampling element 105, the spacing N of each core hole 10b can be set, and the spacing N of each core hole 10b can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, or 30mm. Moreover, when the effective length M of the embedded sampling element 105 is large, two or more core holes 10b can be provided along the insertion length direction of the embedded sampling element 105.

[0333] The high-voltage sampling component 104 can be a sheet, wire, or filament metal component capable of transmitting electrical signals, such as a copper sheet, nickel sheet, or copper wire. Preferably, the high-voltage sampling component 104 can be a copper sheet, using the same material as the high-voltage bar 101 for easy connection.

[0334] The high-pressure sampling component 104 can be bent into shape to facilitate assembly and connection. In one embodiment, the embedded sampling component 105 is a copper sheet, and a bending portion is provided between the fifth end 105a and the sixth end 105b of the embedded sampling component 105, the bending portion making the fifth end 105a and the sixth end 105b approximately perpendicular.

[0335] A support member 32 is provided between the sixth end 105b of the embedded sampling component 105 and the battery management main control board 30. The battery management main control board 30 and the support member 32 are sequentially inserted through screws, pins and other fasteners to connect with the sixth end 105b.

[0336] The support member 32 includes a first part 321 and a second part 322 disposed on the first part 321. The outer diameter of the second part 322 is smaller than the outer diameter of the first part 321. The second part 322 is connected to the battery management main control board 30, while the first part 321 abuts against the sixth end 105b.

[0337] The base assembly 10 has a mounting groove 10a. The bottom end of the mounting groove 10a corresponds to the bottom end of the base assembly 10, and the opening end of the mounting groove 10a corresponds to the top end of the base assembly 10. The high-voltage relay 20 is placed upside down in the mounting groove 10a. The high-voltage terminal 23 of the high-voltage relay 20 is oriented towards the bottom end of the mounting groove 10a, and the high-voltage terminal 23 is connected to the high-voltage switch 101.

[0338] Please refer to Figure 14 , Figure 15 , Figure 24 and Figure 25 In one embodiment, a support structure 10c is provided on the wall of the mounting groove 10a. The support structure 10c extends toward the high voltage relay 20. Two adjacent support structures 10c, the wall of the mounting groove 10a and the surface of the high voltage relay 20 enclose a receiving space, and the receiving space is filled with colloid 10k.

[0339] The support structure 10c consists of multiple protruding ribs formed on the groove wall of the mounting groove 10a. The end of each rib away from the groove wall of the mounting groove 10a is used to limit the outline of the high-voltage relay 20 to achieve initial positioning. At the same time, two adjacent ribs, the groove wall of the mounting groove 10a, and the surface of the high-voltage relay 20 enclose a receiving space. The operator can insert the glue injection end of the glue injection structure into the groove opening of the mounting groove 10a and inject glue into the receiving space, thereby ensuring that the high-voltage relay 20 does not move or moves relatively little within the mounting groove 10a.

[0340] Alternatively, in addition to good flowability, colloid 10k may also have good thermal conductivity and insulation properties.

[0341] In other embodiments, depending on actual usage requirements, adhesive can be applied to at least two outer surfaces of the high-voltage relay 20 that are opposite to the mounting groove 10a to form an adhesive layer.

[0342] Optionally, the injection height of the adhesive in the mounting groove 10a is 20mm to 35mm. Here, the injection height of the adhesive in the mounting groove 10a can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, etc.

[0343] The end of the support structure 10c that is away from the groove wall of the mounting groove 10a is in clearance fit with the surface of the high voltage relay 20.

[0344] A barrier 10d is provided on the bottom wall of the mounting groove 10a. The barrier 10d surrounds the high-voltage terminal 23 of the high-voltage relay 20, and the end of the barrier 10d away from the bottom wall of the mounting groove 10a abuts against the high-voltage relay 20.

[0345] The high-voltage relay 20 includes a relay body 24 and an upper housing assembly 25. The upper housing assembly 25 includes a magnet frame 251 and a magnetic element 252 disposed on the magnet frame 251. A mounting post 10e is provided on the bottom wall of the mounting groove 10a. A plug hole 10f is provided in the mounting post 10e. The magnet frame 251 is inserted into the plug hole 10f and surrounds the periphery of the relay body 24. The magnetic element 252 and the relay body 24 are in clearance fit.

[0346] Understandably, the high-voltage relay 20 provided in this embodiment is a high-voltage relay 20 after the casing has been removed. Therefore, the relay body 24 and the upper housing assembly 25 of the high-voltage relay 20 are exposed. Specifically, the magnet frame 251 is used to fix the magnetic component 252, and the magnet frame 251 is fixed to the insertion hole 10f of the mounting post 10e so that the magnetic component 252 and the relay body 24 are in clearance fit.

[0347] The magnetic steel frame 251 includes a first plate 2511 and second plates 2512 disposed on opposite sides of the first plate 2511. The two second plates 2512 are bent toward each other. A magnetic element 252 is disposed on the first plate 2511. Each of the two second plates 2512 is provided with a support arm 2513. The support arm 2513 is inserted into the insertion hole 10f on the mounting post 10e. The support arm 2513 and the insertion hole 10f are in an interference fit.

[0348] In the actual installation process, the magnetic component 252 is first placed on the first plate 2511, and then the entire magnetic steel frame 251 is placed on the installation mechanism. Then, the support arm 2513 of the magnetic steel frame 251 is inserted into the corresponding insertion hole 10f by mechanical force. Since the support arm 2513 and the insertion hole 10f are in an interference fit, it is difficult to pull the support arm 2513 out of the insertion hole 10f.

[0349] Specifically, the support arm 2513 has a square cross-section and has two long side walls 2513a and two short side walls 2513b. Similarly, the insertion hole 10f is a square insertion hole 10f that is adapted to it. Therefore, it is possible to choose an interference fit between the two long side walls 2513a and the inner wall of the square insertion hole 10f, or it is possible to choose an interference fit between the two short side walls 2513b and the inner wall of the square insertion hole 10f.

[0350] An avoidance notch 10j is provided on the mounting post 10e. The avoidance notch 10j is used to avoid the end face of the relay body 24, so as to reduce the probability of the end face of the relay body 24 colliding with the mounting post 10e.

[0351] The electrical control device 100 includes a heat-conducting element 41, which is located at the bottom of the base assembly 10. The heat-conducting element 41 is used to conduct the heat of the high-pressure plate 101 to the heat exchanger 400 for heat dissipation.

[0352] The bottom shell 40 is disposed on the bottom end of the base assembly 10, and the heat-conducting element 41 is disposed on the side of the bottom shell 40 away from the base assembly 10; the high-pressure plate 101 is at least partially exposed on the bottom end of the base assembly 10, and the bottom shell 40 is provided with a first opening 40a so that the high-pressure plate 101 at least partially abuts against the heat-conducting element 41.

[0353] The high-voltage switch 101 is connected to the high-voltage terminal 23 of the high-voltage relay 20 by a flat-head bolt 106, forming a countersunk plate on the end face of the high-voltage switch 101. The end face of the flat-head bolt 106 is smaller than or equal to the end face of the high-voltage switch 101.

[0354] An insulating component 42 is disposed between the bottom shell 40 and the heat-conducting component 41. The insulating component 42 is used to provide corresponding insulation protection for the high-voltage transformer 101.

[0355] The insulating component 42 includes an insulating sheet 421 and an insulating flange 422 disposed on the edge of the insulating sheet 421. The insulating sheet 421 is located between the bottom shell 40 and the heat-conducting component 41, while the insulating flange 422 surrounds the side wall of the bottom shell 40. In this way, the insulating component 42 is similar to a box-shaped structure with an open end. By fitting it in a sleeved manner, it achieves insulation treatment for the high-voltage transformer 101. At the same time, the insulating flange 422 also provides a certain waterproof function. That is, the waterproof height of the bottom shell 40 is the height from the insulating flange 422 to the insulating sheet 421.

[0356] A sealing groove 40b is formed on the end of the bottom shell 40 facing the heat conduction element 41. A sealing element is provided in the sealing groove 40b. The sealing element can be a rubber ring, glue, etc. Optionally, sealant can be filled in the sealing groove 40b to waterproof the bottom shell 40 and the heat conduction element 41. In this case, the insulating element 42 is not required.

[0357] The cover plate 50 includes a top cover portion 51 and may further include a side cover portion 52 connected to the top cover portion 51. The top cover portion 51 covers the top of the base assembly 10 and abuts against the high voltage relay 20, while the side cover portion 52 covers the battery management main control board 30.

[0358] An abutment 43 is also provided between the top cover 51 and the high-voltage relay 20.

[0359] The electronic control device 100 can be a cuboid or approximately a cuboid, wherein the cuboid includes four sides with a larger area. The battery cell monitoring circuit board 60 and the battery management main control board 30 are respectively located on two adjacent sides of the four sides with a larger area. The battery cell monitoring circuit board 60 is provided with a first connector, the interface of which faces the side of the battery management main control board 30. The battery management main control board 30 is provided with a second connector, the interface of which faces the side of the battery cell monitoring circuit board 60. This facilitates the communication connection between the two circuit boards.

[0360] The first connector's interface faces the side of the battery cell pack inside the battery device, thereby facilitating communication with the battery cell pack.

[0361] The electronic control device 100 also includes a cover plate 50. Along the height direction of the electronic control device 100, a battery cell monitoring circuit board 60, a cover plate 50, and a high-voltage relay 20 are arranged in sequence. In this way, the high-voltage electrical components and the low-voltage sampling components are set separately, thereby avoiding interference between high and low voltage.

[0362] The battery cell monitoring circuit board 60 can be integrated on the cover plate 50, which can further reduce the overall size of the electrical system and obtain a more integrated electronic control device 100, thereby freeing up more space for battery cell components within the battery device.

[0363] A nut post is provided on the cover plate 50, and the battery cell monitoring circuit board 60 is mounted on the nut post.

[0364] The top cover 61 covers the battery cell monitoring circuit board 60, which is located between the top cover 61 and the cover plate 50. The top cover 61 is connected to the cover plate 50, and a second opening 62 is provided on the top cover 61 to expose each connector.

[0365] The electronic control device 100 includes a shunt 70, which includes a metal terminal section 71 and a signal transmission section 72. The metal terminal section 71 includes metal terminals at both ends and a shunt resistor section. The shunt resistor section is disposed between the two metal terminals and is soldered to the two metal terminals. The signal transmission section 72 is used to transmit electrical signals from both ends of the shunt to the battery management main control board 30. One end of the metal terminal section 71 is electrically connected to the high-voltage relay 20, and the other end of the metal terminal section 71 is electrically connected to the battery cell group, thereby collecting the current output by the battery group. The signal transmission section 72 and the battery management main control board 30 can be soldered together to realize signal transmission.

[0366] The electronic control device 100 includes a pre-charge relay 80 and a pre-charge resistor 81. The pre-charge relay 80 is located on the battery management main control board 30, and the position of the pre-charge relay 80 on the battery management main control board 30 is far away from each low-voltage transmission component 31. The pre-charge resistor 81 is electrically connected to the battery management main control board 30 through one of the high-voltage sampling components 104. The base assembly 10 is provided with a first cavity 10g for accommodating the pre-charge relay 80 and a second cavity 10h for accommodating the pre-charge resistor 81.

[0367] The pre-charge resistor 81 is at least partially exposed at the bottom end of the base assembly 10, and the exposed portion of the pre-charge resistor 81 abuts against the heat-conducting element 41. In this way, the heat exchange efficiency of the pre-charge resistor 81 can be increased through the heat-conducting element 41, and at the same time, centralized heat exchange can be achieved on the pre-charge resistor 81.

[0368] The electronic control device 100 includes a fuse 90 and a fusible copper busbar 91. The base assembly 10 is provided with a third cavity 10i for accommodating the fuse 90 and the fusible copper busbar 91. At least a portion of the fusible copper busbar 91 is exposed at the bottom end of the base assembly 10, and the exposed portion of the fusible copper busbar 91 abuts against the heat-conducting element 41.

[0369] Reference Figure 2As shown in the illustration, this application provides a battery device 1001, which includes one or more battery cell components 200. The battery device 1001 disclosed in this application can be used in electrical devices that use the battery device 1001 as a power source or in various energy storage devices and systems that use the battery device 1001 as an energy storage element. Electrical devices can be, but are not limited to, mobile phones, portable devices, laptops, electric toys, power tools, electric vehicles, vehicles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0370] In some embodiments, the battery cell assembly 200 is typically formed by arranging a plurality of battery cells.

[0371] As an example, the battery cell assembly 200 can be a battery module, which is composed of multiple battery cells arranged and fixed to form an independent module.

[0372] In some embodiments, the battery device 1001 may be a battery pack, which includes a housing and one or more battery cell assemblies 200, the battery cell assemblies 200 being housed within the housing.

[0373] As an example, the battery cell assembly 200 can be a battery module, which can be housed in the housing 300 by fixing the battery module in the housing 300.

[0374] As an example, the battery cell assembly 200 can also be housed in the housing 300 by directly fixing multiple battery cells to the housing 300.

[0375] As an example, the housing 300 may include a first sub-housing and a second sub-housing. The first sub-housing and the second sub-housing are fastened together to form a closed space inside the housing 300 to house the battery cell assembly 200. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first sub-housing 300 may be a top cover or a bottom plate.

[0376] As an example, the housing 300 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 300 forms an enclosed space to house the battery cell assembly 200.

[0377] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0378] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 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 1001 is disposed inside the vehicle 1000, and the battery device 1001 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 1001 can be used to power the vehicle 1000; for example, the battery device 1001 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller and a motor. The controller is used to control the battery device 1001 to supply power to the motor, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0379] In some embodiments of this application, the battery device 1001 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0380] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. An electronic control device, characterized in that, include: A base assembly, the base assembly including a base housing, in which at least a portion of a high-voltage switch is embedded, the high-voltage switch being used for electrical connection with a peripheral device; A battery management main control board, which is mounted on the base assembly. A high-voltage sampling device, one end of which is connected to the high-voltage switch, and the other end of which is connected to the battery management main control board.

2. The electronic control device as described in claim 1, characterized in that, The high-voltage sampling device is integrated into the battery management main control board; or... The high-pressure sampling component and the high-pressure plate are integrated into the base housing.

3. The electronic control device as described in claim 1, characterized in that, The high-pressure sampling component includes an embedded sampling component, at least a portion of which is embedded in the base housing.

4. The electronic control device as described in claim 3, characterized in that, The effective length M of the embedded sampling component within the base housing is greater than or equal to 15 mm.

5. The electronic control device as described in claim 4, characterized in that, The base housing is provided with at least two core holes, each core hole corresponding to the embedded sampling component, and the core holes are spaced apart along the length direction of the embedded sampling component.

6. The electronic control device as described in claim 5, characterized in that, The distance between two adjacent core holes is N, where 10mm ≤ N ≤ 30mm.

7. The electronic control device as described in claim 3, characterized in that, The embedded sampling component includes a fifth end and a sixth end. The fifth end is connected to the high-voltage bar plate and is injection molded together with the base housing. The sixth end extends to the outside of the base housing for connection with the battery management main control board.

8. The electronic control device as described in claim 7, characterized in that, The high-pressure plate is connected to the fifth end by at least two fasteners, and the high-pressure plate is integrally formed into the base housing after being connected to the fifth end.

9. The electronic control device as described in claim 8, characterized in that, The spacing K between two adjacent fasteners is greater than or equal to 3 mm.

10. The electronic control device as described in claim 7, characterized in that, The length of the sixth end extending away from the fifth end is L, where 8mm ≤ L ≤ 15mm.

11. The electronic control device as described in claim 7, characterized in that, A support member is provided between the sixth end and the battery management main control board, and the support member is used to connect the sixth end to the battery management main control board.

12. The electronic control device as described in claim 7, characterized in that, The buried sampling component is bent, and the buried sampling component includes a bent portion, which is located between the fifth end and the sixth end.

13. The electronic control device as described in claim 12, characterized in that, The two opposite ends of the bent portion are perpendicular to the fifth end and the sixth end, respectively.

14. The electronic control device according to any one of claims 3 to 13, characterized in that, The high-voltage switch includes an embedded switch, which includes a first end, an embedded connecting section, and a second end. The first end is used to connect to the high-voltage terminal line of the high-voltage relay, the embedded connecting section is embedded in the base housing, and the second end is used to electrically connect to external devices.

15. The electronic control device as described in claim 14, characterized in that, The first end is located on one side of the base housing along the height direction of the base housing, and the second end is located on the other side of the base housing along the height direction of the base housing.

16. The electronic control device as described in claim 15, characterized in that, The direction from the second end to the first end is the direction in which the electronic control device is installed inside the battery pack.

17. The electronic control device as described in claim 14, characterized in that, The first end portion includes a first side and a second side along its own thickness direction, and at least part of the metal of both the first side and the second side is exposed on the outer surface of the base housing; The exposed metal on the first side abuts against the high-voltage terminal of the high-voltage relay, while the metal on the second side is exposed on the outer surface of the base housing.

18. The electronic control device as described in claim 17, characterized in that, Along the thickness direction of the first end, the height of the second side of the first end protruding from the plastic of the base housing is G, where G > 0.5 mm.

19. The electronic control device as described in claim 17, characterized in that, The first side also includes a bare metal surface and a embedded metal surface. The bare metal surface of the first side is used to abut against the high-voltage terminal of the high-voltage relay. The embedded metal surface of the first side is embedded in the base housing. The base housing is provided with a terminal connection hole. The bare metal surface is located in the terminal connection hole. The high-voltage terminal is connected to the bare metal surface at the terminal connection hole.

20. The electronic control device as described in claim 19, characterized in that, The embedded sampling component includes a fifth end, which is stacked on the first side surface, and the fifth end and the metal embedded surface are embedded together in the middle of the base housing.

21. The electronic control device as described in claim 17, characterized in that, The second end includes a third side and a fourth side along the thickness direction of the creaking sound. The third side is exposed on the outer surface of the base housing, and the fourth side is embedded in the base housing.

22. The electronic control device as described in claim 21, characterized in that, Along the thickness direction of the second end, the height of the third side of the second end protruding from the plastic of the base housing is J, where J > 0.5 mm.

23. The electronic control device as described in claim 14, characterized in that, The embedded connecting section is embedded in the base housing, and the two opposite ends of the embedded connecting section are perpendicular to the first end and the second end, respectively.

24. The electronic control device according to any one of claims 1 to 13, characterized in that, The high-voltage switch includes a loose switch, which includes a third end, an intermediate connecting section and a fourth end. The third end is used to connect to the high-voltage terminal of the high-voltage relay, the fourth end is connected to the base housing, and the intermediate connecting section is connected to the third end and the fourth end.

25. The electronic control device according to any one of claims 1 to 13, characterized in that, The high-pressure transformer includes embedded transformers and loose transformers. The embedded transformer includes a first end, an embedded connecting section and a second end, and the loose transformer includes a third end, an intermediate connecting section and a fourth end. The high-voltage relay includes two high-voltage terminals, one of which is connected to the first end of the embedded pad, and the other high-voltage terminal is connected to the third end of the pad.

26. The electronic control device as described in claim 25, characterized in that, The first end portion includes a first side and a second side along its own thickness direction. The first side is used to abut against the high-voltage terminal of the high-voltage relay, and the metal of the second side is exposed on the outer surface of the base housing. The third end includes a fifth side and a sixth side along its own thickness direction. The fifth side is used to abut against the high-voltage terminal of the high-voltage relay. The sixth side is in the same plane as the second side, or the height difference between the sixth side and the second side in the thickness of the base housing is ≤1mm.

27. The electronic control device as described in claim 26, characterized in that, When there is a height difference between the sixth side and the second side in the thickness direction of the base housing, the height difference between the sixth side and the second side is ≤0.5mm.

28. A battery device, characterized in that, It includes the electronic control device and battery cell assembly as described in any one of claims 1 to 27, wherein the battery cell assembly is electrically connected to the electronic control device.

29. An electrical appliance, characterized in that, Includes the battery device as described in claim 28, the battery device being used to store or provide electrical energy.

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