Electronic control device, battery device and electric device

Abstract

The present application discloses an electronic control device (100), a battery device (1001), and an electric device. The electronic control device (100) comprises busbars (20c), sampling members (21), a battery cell monitoring circuit board (30), and a battery management main control board (40); at least some of the busbars (20c) are provided with the sampling members (21), and the sampling members (21) are used for collecting a first electric signal on the at least some of the busbars (20c); the battery cell monitoring circuit board (40) is provided with an electric signal processing chip (41); and the battery management main control board (30) is provided with a transmission circuit, and the transmission circuit is used for forming a path between the battery cell monitoring circuit board (40) and the sampling members (21), so as to transmit the first electric signal from the busbars (20c) to the electric signal processing chip (41). In this way, the circuit design difficulty on the battery management main control board can be greatly reduced.

Description

Electrical control devices, battery devices, and electrical appliances

[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 application relates to the field of battery device technology, specifically to an electronic control device, a battery device, and an electrical device. Background Technology

[0003] 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.

[0004] However, the electrical components, electrical connections, sampling components, and connectors in the high-voltage power distribution equipment of related products are scattered or integrated into a single housing. In addition, the BMU needs to collect and monitor various electrical signal data, which also results in a large overall size of the BMU board and a high degree of circuit complexity. Technical issues

[0005] One of the objectives of this application is to provide an electronic control device, a battery device, and an electrical device, which aims to improve the problem that the BMU board in a high-voltage power distribution device has a large overall volume and a high degree of circuit complexity. Technical solutions

[0006] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of this application is as follows:

[0007] In a first aspect, an electronic control device is provided, comprising:

[0008] A connecting plate is used to connect the power battery system and the load in the power supply circuit.

[0009] The sampling element is provided on at least a portion of the connecting bar, and the sampling element is used to collect a first electrical signal on at least a portion of the connecting bar;

[0010] A battery cell monitoring circuit board, wherein the battery cell monitoring circuit board is equipped with an electrical signal processing chip;

[0011] A battery management main control board; the battery management main control board is provided with a transmission circuit, which is used to form a path between the battery cell monitoring circuit board and the sampling device, so as to transmit the first electrical signal from the connecting plate to the electrical signal processing chip.

[0012] In some embodiments, the electronic control device includes an adapter for electrically connecting the battery management main control board to the battery cell monitoring circuit board, and connecting the transmission circuit and the electrical signal processing chip.

[0013] In some embodiments, the battery management main control board is provided with a sampling terminal connection position and a first adapter terminal connection position, the transmission circuit connects the sampling terminal connection position and the first adapter terminal connection position, the sampling component is connected to the sampling terminal connection position, and the adapter component is connected to the first adapter terminal connection position.

[0014] In some embodiments, the base assembly has a side surface and a top surface connected to the side surface; the battery cell monitoring circuit board is disposed on the top surface, and the battery management main control board is disposed on the side surface.

[0015] In some embodiments, the electronic control device includes a first locking accessory and a second locking accessory. The first locking accessory is disposed at one end of the adapter and connected to the battery management main control board; the second locking accessory is disposed at the other end of the adapter and connected to the battery cell monitoring circuit board.

[0016] In some embodiments, the adapter includes a first adapter piece that is bent, the first adapter piece including a first adapter segment and a second adapter segment connected to the first adapter segment, the first adapter segment being connected to the first lock accessory, and the second adapter segment being connected to the second lock accessory.

[0017] In some embodiments, the first lock accessory is connected to the base assembly; the second lock accessory is connected to the base assembly.

[0018] In some embodiments, the base assembly includes a bottom shell and a middle shell disposed on the bottom shell, the first adapter section and the battery management main control board are connected to the bottom shell through the first locking accessory; the second adapter section and the battery cell monitoring circuit board are connected to the middle shell through the second locking accessory.

[0019] In some embodiments, the bottom shell is provided with a first boss structure, and the first locking accessory is connected to the first boss structure.

[0020] In some embodiments, the second adapter section is integrally injection molded with the middle shell.

[0021] In some embodiments, the middle shell is provided with a second boss structure, the second adapter section is located at the second boss structure and integrally injection molded onto the second boss structure, and the second locking accessory is connected to the second boss structure.

[0022] In some embodiments, the sampling terminal connection bit and the first adapter terminal connection bit are located on opposite sides of the battery management main control board.

[0023] In some embodiments, the battery management main control board has long edge sides that are disposed opposite each other along the width direction, and the sampling terminal connection position and the first adapter terminal connection position are respectively disposed on the corresponding long edge sides.

[0024] In some embodiments, the electronic control device includes a relay, the relay includes a high-voltage terminal, the high-voltage terminal is connected to the connection bar, and the sampling terminal connection position is located at the edge of the battery management main control board on one side along a first direction, the first direction being the extension direction of the high-voltage terminal of the relay.

[0025] In some embodiments, the electronic control device includes a relay, the relay includes a high-voltage terminal and a low-voltage terminal, the high-voltage terminal is connected to the connecting bar, the battery management main control board is also provided with a low-voltage terminal connection position, the battery management main control board outputs a low-voltage control signal, the low-voltage control signal is transmitted to the low-voltage terminal through the low-voltage terminal connection position.

[0026] In some embodiments, both the low-voltage terminal connection position and the first adapter terminal connection position are disposed opposite to the sampling terminal connection position; and / or,

[0027] Both the low-voltage terminal connection position and the sampling terminal connection position are positioned opposite to the first adapter terminal connection position.

[0028] In some embodiments, along the length of the battery management main control board, the battery management main control board has a first region and a second region, at least a portion of the low-voltage terminal connection positions are located in the first region, and at least a portion of the first adapter terminal connection positions and at least a portion of the sampling terminal connection positions are located in the second region.

[0029] In some embodiments, a first creepage structure is provided between at least two adjacent sampling terminal connections; and / or,

[0030] A first creepage structure is provided between at least two adjacent first adapter terminal connection positions.

[0031] In some embodiments, the first creepage structure includes an opening structure formed on the battery management main board.

[0032] In some embodiments, the battery cell monitoring circuit board is provided with a second adapter terminal connection position, the second adapter terminal connection position is connected to the adapter, and a second creepage structure is provided between at least two adjacent second adapter terminal connection positions.

[0033] In some embodiments, a second electrical signal is further included between the battery management main control board and the battery cell monitoring circuit board. The adapter includes a second adapter piece that is bent, and the second electrical signal is transmitted between the battery management main control board and the battery cell monitoring circuit board through the second adapter piece.

[0034] In a second aspect, a battery device is provided, including the aforementioned electronic control device and a battery cell assembly, wherein the battery cell assembly is electrically connected to the electronic control device.

[0035] Thirdly, an electrical device is provided, including the battery device described above, the battery device being used to store or provide electrical energy.

[0036] The beneficial effects of the electronic control device provided in this application embodiment are as follows: the first electrical signal on the connecting plate is transmitted to the electrical signal processing chip on the battery cell monitoring circuit board after passing through the battery management main control board and the sampling device, so as to realize the monitoring and processing of the first electrical signal from the connecting plate on the battery cell monitoring circuit board. In this way, the circuit design difficulty on the battery management main control board can be greatly reduced, and the physical size of the battery management main control board can also be reduced to a certain extent.

[0037] Understandably, the beneficial effects of the second and third aspects can be referred to the relevant statements on the beneficial effects of the first aspect, and will not be repeated here. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 is a structural schematic diagram of the vehicle provided in an embodiment of this application;

[0040] Figure 2 is an exploded view of the battery device provided in an embodiment of this application;

[0041] Figure 3 is an exploded view of the electronic control device provided in an embodiment of this application;

[0042] Figure 4 is an exploded view of the electronic control device provided in the embodiment of this application from another angle;

[0043] Figure 5 is an enlarged view of point A in Figure 4;

[0044] Figure 6 is an enlarged view of point B in Figure 4;

[0045] Figure 7 is a front view of the battery management main control board of the electronic control device provided in the embodiment of this application;

[0046] Figure 8 is a schematic diagram of the bottom shell of the electronic control device provided in an embodiment of this application;

[0047] Figure 9 is a schematic diagram of the structure of the middle shell of the electronic control device provided in the embodiment of this application;

[0048] Figure 10 is a schematic diagram of the structure of the high-voltage relay of the electronic control device provided in the embodiment of this application;

[0049] Figure 11 is a schematic diagram of the electronic control device provided in the embodiment of this application, excluding the base assembly;

[0050] Figure 12 is an enlarged view of point C in Figure 11.

[0051] Explanation of reference numerals in the attached drawings: 1000, Vehicle; 100, Electronic control device; 1001, Battery device; 200, Battery cell assembly; 300, Housing; 10, Base assembly; 11, Bottom shell; 12, Middle shell; 111, First boss structure; 121, Second boss structure; 112, Third boss structure; 122, Fourth boss structure; 10a, Side; 10b, Top surface; 20, Relay; 20a, High-voltage terminal; 20b, Low-voltage terminal; 20c, Connecting plate; 21, Sampling component; 30, Battery management main control board; 30a, First creepage structure; 30b, Second area; 30c, First area; 30d, Long edge side; 30e, Wide edge; 31, Sampling terminal connection position; 32, First adapter terminal connection position; 33, Low-voltage terminal connection position; 40. Battery cell monitoring circuit board; 41. Electrical signal processing chip; 42. Second adapter terminal connection position; 40a. Second creepage structure; 50. First adapter piece; 51. First adapter segment; 52. Second adapter segment; 60. Second adapter piece; 61. Third adapter segment; 62. Fourth adapter segment; 71. First lock accessory; 72. Second lock accessory; 73. Third lock accessory; 74. Fourth lock accessory. Embodiments of the present invention

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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).

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] However, the battery management unit in the high-voltage power distribution equipment of related products is mainly responsible for various signal processing and monitoring, which also increases the complexity of the circuit design of the battery management unit and even requires a larger overall physical size.

[0063] In view of this, embodiments of this application provide an electronic control device, which includes an electrical signal processing chip on a battery cell monitoring circuit board and a transmission circuit on a battery management main control board. The transmission circuit forms a path between the battery cell monitoring circuit board and the sampling device, so that a first electrical signal is transmitted from the connecting plate to the electrical signal processing chip. This significantly reduces the circuit design complexity on the battery management main control board and also reduces the physical size of the battery management main control board to a certain extent.

[0064] Please refer to Figures 3 to 6 and Figures 10 to 12. This application provides an electronic control device 100, including a connecting plate 20c, a sampling component 21, a battery management main control board 30, and a battery cell monitoring circuit board 40.

[0065] The connecting plate 20c is used to connect the power supply circuit between the power battery system and the load; at least a portion of the connecting plate 20c is provided with a sampling element 21, which is used to collect the first electrical signal on at least a portion of the connecting plate 20c; the battery cell monitoring circuit board 40 is provided with an electrical signal processing chip 41; the battery management main control board 30 is provided with a transmission circuit, which is used to form a path between the battery cell monitoring circuit board 40 and the sampling element 21, so as to transmit the first electrical signal from the connecting plate 20c to the electrical signal processing chip 41.

[0066] Understandably, the battery management main control board 30 is a key component in the battery management system. Here, the battery management main control board 30 can be the circuit board of the BMU. The battery management system should have a corresponding protective casing to protect the internal components such as the battery management main control board 30. The transmission circuit is a circuit structure that ensures the transmission of the first electrical signal to the electrical signal processing chip 41.

[0067] The battery cell monitoring circuit board 40 is used to monitor the working status of the battery cells, including parameters such as voltage and temperature.

[0068] The connecting plate 20c is a conductive structural component used to form a power supply circuit between the power battery system and the load. Typically, the connecting plate 20c can be a copper busbar, an aluminum busbar, or other metal conductive components.

[0069] The sampling component 21 is used to establish an electrical connection between the connecting plate 20c and the battery management main control board 30. Here, the first electrical signal should be a voltage signal. For example, the sampling component 21 can collect the total voltage of the power battery to monitor the total voltage of the power battery, determine the charging and discharging status of the battery pack and the remaining capacity; it can also collect the positive and negative voltages of the high-voltage bus between the power battery and the load to monitor the bus voltage, ensure that the bus voltage is within the normal range, and reduce the probability of failures caused by overvoltage or undervoltage; it can also collect the voltage output to the load side to ensure that the input voltage of the load equipment is within the normal range; and it can collect the voltage between the positive or negative terminal of the power battery pack and ground to monitor the insulation status of the power battery pack to determine whether there is a risk of leakage.

[0070] Specifically, the first electrical signal connected to the battery plate 20c is transmitted to the transmission circuit of the battery management main control board 30 via the sampling element 21, and then transmitted to the electrical signal processing chip 41 of the battery cell monitoring circuit board 40 via the transmission circuit. The battery management main control board 30 and the battery cell monitoring circuit board 40 can be electrically connected via wire harnesses, copper busbars, etc.

[0071] The electronic control device 100 provided in this application transmits the first electrical signal from the connected pad 20c to the electrical signal processing chip 41 on the battery cell monitoring circuit board 40 after passing through the battery management main control board 30 and the sampling device 21. This enables the battery cell monitoring circuit board 40 to monitor and process the first electrical signal from the connected pad 20c. This significantly reduces the circuit design difficulty on the battery management main control board 30 and also reduces the physical size of the battery management main control board 30 to a certain extent.

[0072] Please refer to Figures 3 to 6. In some embodiments, the electronic control device 100 includes an adapter for electrically connecting the battery management main control board 30 to the battery cell monitoring circuit board 40, and connecting the transmission circuit and the electrical signal processing chip 41.

[0073] Understandably, the adapter is a conductive structural component used to enable the transmission of the first electrical signal between the battery management main control board 30 and the battery cell monitoring circuit board 40. Here, the structural form of the adapter includes, but is not limited to, wire harnesses, copper busbars, and the structure of both.

[0074] Furthermore, the electrical connection between the adapter and the battery management main control board 30 can be welding, plugging, snap-fitting, or threaded connection, etc.; the electrical connection between the adapter and the battery cell monitoring circuit board 40 can be welding, plugging, snap-fitting, or threaded connection, etc.

[0075] For example, screws, pins and other fasteners are provided at one end of the adapter, and it is connected to the battery management main control board 30 by means of locking connection. Similarly, screws, pins and other fasteners are also provided at the other end of the adapter, and it is also connected to the battery cell monitoring circuit board 40 by means of locking connection.

[0076] In this way, an electrical path is established between the battery management main control board 30 and the battery cell monitoring circuit board 40 using the adapter, so as to ensure that the first electrical signal is transmitted from the transmission circuit to the electrical signal processing chip 41.

[0077] Please refer to Figures 3 to 7. In some embodiments, the battery management main control board 30 is provided with a sampling terminal connection position 31 and a first adapter terminal connection position 32. The transmission circuit connects the sampling terminal connection position 31 and the first adapter terminal connection position 32. The sampling component 21 is connected to the sampling terminal connection position 31, and the adapter is connected to the first adapter terminal connection position 32.

[0078] Understandably, the sampling terminal connection position 31 is the point where the battery management main control board 30 and the sampling component 21 are electrically connected. The electrical connection between the sampling terminal connection position 31 and the sampling component 21 can be welding, plugging, snap-fitting, or threaded connection, etc. For example, if the two are connected by welding, the sampling terminal connection position 31 is a solder joint, and if the two are connected by thread, the sampling terminal connection position 31 is a through hole or a threaded hole.

[0079] Furthermore, the first adapter terminal connection position 32 is the point where the battery management main control board 30 is electrically connected to the adapter. The electrical connection between the first adapter terminal connection position 32 and the adapter can be welding, plugging, snap-fitting, or threaded connection. For example, if the two are connected by welding, the first adapter terminal connection position 32 is a solder joint, and if the two are connected by thread, the first adapter terminal connection position 32 is a through hole or a threaded hole.

[0080] Of course, the specific structural form and quantity of the sampling terminal connection position 31 and the first adapter terminal connection position 32 can be set according to actual usage requirements.

[0081] Thus, by setting a sampling terminal connection position 31 and a first adapter terminal connection position 32 on the battery management main control board 30, the battery management main control board 30 can be electrically connected to the sampling component 21 and the adapter respectively.

[0082] Please refer to Figure 3. In one embodiment, the electronic control device 100 includes a base assembly 10, which has a side surface 10a and a top surface 10b connected to the side surface 10a; a battery cell monitoring circuit board 40 is disposed on the top surface 10b, and a battery management main control board 30 is disposed on the side surface 10a.

[0083] 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.

[0084] The base assembly 10 should be a cubic structure, having circumferentially arranged side surfaces 10a and a top surface 10b connected to the side surfaces 10a and arranged along the direction of gravity. Here, the top surface 10b is the end face of the base assembly 10. Of course, the base assembly 10 should also have a bottom surface opposite to the top surface 10b. Thus, the base assembly 10 should have four side surfaces 10a, one top surface 10b, and one bottom surface.

[0085] As shown in Figure 3, in the XYZ coordinate system, the X-axis represents the width of the base assembly 10, the Y-axis represents the length of the base assembly 10, and the Z-axis represents the height of the base assembly 10. Therefore, the top surface 10b or bottom surface of the base assembly 10 refers to the end face perpendicular to the Z-axis (or, alternatively, the top or bottom); the side surface 10a of the base assembly 10 refers to the surface structure perpendicular to the XY plane. Thus, depending on actual usage requirements, a battery management control board 30 can be installed on the side surface 10a and / or the top surface 10b of the base assembly 10, and a battery cell monitoring circuit board 40 can also be installed on the side surface 10a and / or the top surface 10b of the base assembly 10.

[0086] For example, a battery cell monitoring circuit board 40 is provided on the top surface 10b of the base assembly 10, and a battery management main control board 30 is provided on one of the side surfaces 10a. Thus, the plane where the battery cell monitoring circuit board 40 is located is perpendicular to the plane where the battery management main control board 30 is located. At this time, the battery cell monitoring circuit board 40 and the battery management main control board 30 can be connected by an L-shaped adapter. In addition, a connector for connecting to the battery cell assembly can be provided on the battery cell monitoring circuit board 40 so that each connector is at the same horizontal height as the electrical signal data transmission line of the battery cell assembly, which facilitates wiring.

[0087] Of course, in other embodiments, a battery cell monitoring circuit board 40 is disposed on one side 10a of the base assembly 10, and a battery management main control board 30 is disposed on the other side 10a. The battery management main control board 30 and the battery cell monitoring circuit board 40 are disposed opposite each other. In this case, they can be connected by a U-shaped adapter. Furthermore, the overall height of the electronic control device 100 is relatively low, making it suitable for applications where the installation space is relatively small in the height direction. Alternatively, the battery management main control board 30 can also be disposed adjacent to the battery cell monitoring circuit board 40.

[0088] Alternatively, the battery management main control board 30 and the battery cell monitoring circuit board 40 can be stacked on the top surface 10b of the base assembly 10. In this case, the two can be connected by a U-shaped adapter. Furthermore, the overall thickness of the electronic control device 100 can be thinner, making it suitable for applications where the installation space is relatively small in the width direction.

[0089] Thus, by placing the battery management main control board 30 and the battery cell monitoring circuit board 40 on the side 10a and top 10b of the base assembly 10 respectively, the wiring terminals on their surfaces can be exposed, facilitating wiring. At the same time, it also facilitates the connection of the adapter to the battery management main control board 30 and the battery cell monitoring circuit board 40.

[0090] Please refer to Figures 3 to 5. In one embodiment, the electronic control device 100 includes a first locking accessory 71 and a second locking accessory 72. The first locking accessory 71 is inserted through one end of the adapter and connected to the battery management main control board 30; the second locking accessory 72 is inserted through the other end of the adapter and connected to the battery cell monitoring circuit board 40.

[0091] Understandably, depending on actual usage requirements, the connection methods between the adapter and the battery management main control board 30 include, but are not limited to, welding, plugging, and threaded connection. In this embodiment, the adapter is locked to the battery management main control board 30 through the first locking accessory 71. The structure of the first locking accessory 71 includes bolt-like structural components such as screws, pins, and rivets, and it can be connected to the battery management main control board 30 by screwing, plugging, riveting, etc.

[0092] Similarly, the connection methods between the adapter and the battery cell monitoring circuit board 40 include, but are not limited to, welding, plugging, and threaded connection. In this embodiment, the adapter is locked to the battery cell monitoring circuit board 40 through the second locking attachment 72. The structure of the second locking attachment 72 includes bolt-like structural components such as screws, pins, and rivets, which can be connected to the battery cell monitoring circuit board 40 by screwing, plugging, riveting, etc.

[0093] For example, the first lock accessory 71 is a bolt. A threaded hole is provided on the battery management main control board 30, and a through hole is provided on the adapter for the bolt to pass through. The adapter is placed on the battery management main control board so that the through hole corresponds to the threaded hole. The bolt is passed through the through hole and the threaded hole in sequence to connect the adapter to the battery management main control board 30. Here, the adapter is physically connected to the battery management main control board 30 and also electrically connected to it.

[0094] For example, the second locking accessory 72 is a bolt. A threaded hole is provided on the battery cell monitoring circuit board 40, and a through hole is provided on the adapter for the bolt to pass through. The adapter is placed on the battery cell monitoring circuit board 40 so that the through hole corresponds to the threaded hole. The bolt is passed through the through hole and the threaded hole in sequence to connect the adapter to the battery cell monitoring circuit board 40. Here, the adapter is physically connected to the battery cell monitoring circuit board 40 and also electrically connected to it.

[0095] Thus, the adapter can be quickly connected to the battery management main control board 30 and the battery cell monitoring circuit board 40 respectively through the first locking accessory 71 and the second locking accessory 72, making the assembly process simple and more efficient.

[0096] Please refer to Figure 5. In one embodiment, the adapter includes a first adapter piece 50 that is bent. The first adapter piece 50 includes a first adapter segment 51 and a second adapter segment 52 connected to the first adapter segment 51. The first adapter segment 51 is connected to the first lock accessory 71, and the second adapter segment 52 is connected to the second lock accessory 72.

[0097] Understandably, the first adapter segment 51 and the second adapter segment 52 are structural parts that connect the first adapter piece 50 to the first locking accessory 71 and the second locking accessory 72, respectively. Depending on the positions of the battery management main control board 30 and the battery cell monitoring circuit board 40 on the base assembly, the first adapter segment 51 can be bent at 90° or approximately 90° relative to the second adapter segment 52, or it can be folded at 180° or approximately 180° relative to the second adapter segment 52. Each adapter segment should have the same shape and structure as the first adapter piece 50, also being a sheet structure, and the first adapter segment 51 and the second adapter segment 52 can be directly or indirectly connected. For example, the first adapter segment 51 and the second adapter segment 52 can be directly connected through integral molding; or, the first adapter segment 51 and the second adapter segment 52 can be indirectly connected through other adapter segments.

[0098] For example, after being bent at 90°, the first adapter piece 50 is arranged in an L-shape. The first adapter segment 51 and the second adapter segment 52 are integrally formed. Furthermore, the first adapter segment 51 and the second adapter segment 52 are arranged at right angles or approximately at right angles to facilitate connection between the battery management main control board 30 and the battery cell monitoring circuit board 40 when they are arranged perpendicularly.

[0099] For example, after being folded 180°, the first adapter piece 50 is U-shaped, the first adapter segment 51 and the second adapter segment 52 are integrally formed, and the first adapter segment 51 and the second adapter segment 52 are arranged in parallel or nearly parallel, so as to facilitate the connection between the battery management main control board 30 and the battery cell monitoring circuit board 40 when they are arranged in parallel straight.

[0100] Meanwhile, the shape, location, and connection method of the first adapter section 51 and the second adapter section 52 are adjusted according to actual assembly requirements to adapt to various scenarios.

[0101] By segmenting the first adapter piece 50, it is better able to adapt to the assembly needs of different scenarios and improve assembly efficiency.

[0102] Please refer to Figures 3 and 4. In one embodiment, a first lock accessory 71 is connected to the base assembly 10; a second lock accessory 72 is connected to the base assembly 10.

[0103] Understandably, the battery management main control board 30 is mounted on the base assembly 10, and the first adapter piece 50 is connected to the battery management main control board 30 via the first locking accessory 71. Therefore, during assembly, screws, pins, and other fasteners are needed to fix the battery management main control board 30 to the base assembly 10, and the first locking accessory 71 is used to fix the first adapter piece 50 to the battery management main control board 30. This increases both the number of processes and the number of components used for fixing. To solve this problem, the first locking accessory 71 is connected to the base assembly 10. That is, the first locking accessory 71 is used to sequentially pass through the first adapter piece 50 and the battery management main control board 30, and finally connects to the base assembly 10. Here, the first locking accessory 71 can complete the connection requirements between the first adapter piece 50 and the battery management main control board 30, and between the battery management main control board 30 and the base assembly 10, in a single installation. For example, threaded holes or mounting holes can be provided on the base assembly 10 to meet the connection requirements between the first lock accessory 71 and the base assembly 10.

[0104] Similarly, the battery cell monitoring circuit board 40 is mounted on the base assembly 10, and the first adapter piece 50 is connected to the battery cell monitoring circuit board 40 via the second locking attachment 72. Therefore, during assembly, screws, pins, and other fasteners are needed to fix the battery cell monitoring circuit board 40 to the base assembly 10, and the second locking attachment 72 is used to fix the first adapter piece 50 to the battery cell monitoring circuit board 40. This results in more steps and more components used for fixing. To solve this problem, the second locking attachment 72 is connected to the base assembly 10. That is, the second locking attachment 72 is used to sequentially pass through the first adapter piece 50 and the battery cell monitoring circuit board 40, ultimately connecting to the base assembly 10. Here, the second locking attachment 72 can complete the connection requirements between the second adapter piece and the battery cell monitoring circuit board 40, and between the battery cell monitoring circuit board 40 and the base assembly 10, in a single installation. For example, threaded holes or mounting holes can be provided on the base assembly 10 to meet the connection requirements between the second lock accessory 72 and the base assembly 10.

[0105] Thus, by connecting the first locking accessory 71 to the base assembly 10, the installation process of the battery management main control board 30 and the first adapter piece 50 is simplified, and the number of installation parts is also reduced; and by connecting the second locking accessory 72 to the base assembly 10, the installation process of the battery cell monitoring circuit board 40 and the first adapter piece 50 is simplified, and the number of installation parts is also reduced.

[0106] In other embodiments, only the first locking accessory 71 may be connected to the base assembly 10, while the second locking accessory 72 may not be connected to the base assembly 10. That is, only the first locking accessory 71 secures the first adapter piece 50 and the battery management main control board 30 together to the base assembly 10. Alternatively, only the second locking accessory 72 may be connected to the base assembly 10, while the first locking accessory 71 may not be connected to the base assembly 10. That is, only the second locking accessory 72 secures the first adapter piece 50 and the battery cell monitoring circuit board 40 together to the base assembly 10.

[0107] Please refer to Figures 3 and 4. In one embodiment, the base assembly 10 includes a bottom shell 11 and a middle shell 12 disposed on the bottom shell 11. The first adapter section 51 and the battery management main control board 30 are connected to the bottom shell 11 through the first locking accessory 71; the second adapter section 52 and the battery cell monitoring circuit board 40 are connected to the middle shell 12 through the second locking accessory 72.

[0108] Understandably, the base shell 11 is the main structure of the base assembly 10, used to support and house various electrical components, such as relays 20, precharge relays, precharge resistors, shunts, fuses, etc., which can all be mounted on the base shell 11. It can also be used to fix the battery management main control board 30 or the battery cell monitoring circuit board 40.

[0109] The middle shell 12 is part of the base assembly 10 and is connected to the bottom shell 11 to form a corresponding placement space.

[0110] For example, several mounting slots are opened on the top surface 10b of the bottom shell 11, and various electrical components are installed into the mounting slots from top to bottom. The battery management main control board 30 is set on the side surface 10a of the bottom shell 11, and the first adapter section 51 is placed on the battery management main control board 30 so that the first locking accessory 71 connects the first adapter section 51 and the battery management main control board 30 to the bottom shell 11.

[0111] For example, the middle shell 12 includes a horizontal portion and a vertical portion connected to the horizontal portion. The horizontal portion covers the top surface 10b of the bottom shell 11, and the vertical portion extends to the side surface 10a of the bottom shell 11 to enclose the side surface 10a of the bottom shell 11, thereby protecting the battery management main control board 30 located on the side surface 10a of the bottom shell 11. The battery cell monitoring circuit board 40 is placed on the horizontal portion, and the second adapter section 52 is placed on the battery cell monitoring circuit board 40 so that the second locking accessory 72 connects the second adapter section 52 and the battery cell monitoring circuit board 40 to the middle shell 12.

[0112] In this way, the battery management main control board 30 and the battery cell monitoring circuit board 40 are respectively set on the bottom shell 11 and the middle shell 12, which facilitates disassembly and assembly as well as subsequent maintenance.

[0113] Please refer to Figure 8. In one embodiment, the bottom shell 11 is provided with a first boss structure 111, and the first lock accessory 71 is connected to the first boss structure 111.

[0114] Understandably, the first boss structure 111 is a structural part that protrudes from the surface of the bottom shell 11, and the first boss structure 111 is a structural part for cooperating with the first lock attachment 71.

[0115] For example, when the first locking accessory 71 is a bolt, a threaded hole adapted to the bolt is provided on the first boss structure 111; or, when the first locking accessory 71 is a pin, a insertion hole adapted to the pin is provided on the first boss structure 111.

[0116] Thus, by adding a first boss structure 111 to the bottom shell 11, the connection strength between the first lock accessory 71 and the bottom shell 11 can be improved.

[0117] In one embodiment, the second transition section 52 is integrally injection molded with the middle shell 12.

[0118] Understandably, since the battery cell monitoring circuit board 40 and the battery management main control board 30 are separately mounted on the base assembly 10, that is, the battery cell monitoring circuit board 40 and the battery management main control board 30 have a specific installation order, it is difficult to operate when the two are connected through the first adapter piece 50. The main reason is that the first adapter piece 50 has a small structural volume, is easy to lose when placed alone in the assembly process, and is also inconvenient for operators to pick up alone, resulting in a high wear and tear rate.

[0119] To solve the above problems, the second adapter segment 52 of the first adapter piece 50 is integrally injection molded with the middle shell 12. Specifically, the second adapter segment 52 and the middle shell 12 can be injection molded together by in-mold injection molding. In this way, the first adapter piece 50 is connected to the middle shell 12 through the second adapter segment 52. Then, during material transfer, it moves synchronously with the middle shell 12. Furthermore, by passing the second locking accessory 72 through the connection between the second adapter segment 52 and the middle shell 12, the connection between the middle shell 12 and the battery cell monitoring circuit board 40 can be satisfied, as can the connection between the second adapter segment 52 and the battery cell monitoring circuit board 40.

[0120] In this way, by integrally injection molding the second adapter section 52 with the middle shell 12, the material preparation and transfer process in the assembly process can be simplified, and the wear of the first adapter piece 50 can be reduced.

[0121] Please refer to Figure 9. In one embodiment, the middle shell 12 is provided with a second boss structure 121, the second transition section 52 is placed at the second boss structure 121 and integrally injection molded on the second boss structure 121, and the second locking accessory 72 is connected to the second boss structure 121.

[0122] Understandably, the second boss structure 121 is a structural part that protrudes from the surface of the middle shell 12, and the second boss structure 121 is a structural part for cooperating with the second locking attachment 72.

[0123] Since the second transition section 52 is integrally injection molded at the second boss structure 121, and the second transition section 52 and the middle shell 12 are connected, in order to facilitate the insertion of the second locking accessory 72, through holes are provided at the second transition section 52 and the second boss structure 121 so that the second locking accessory 72 can be adapted to the through holes.

[0124] Thus, by adding a second boss structure 121 to the bottom shell 11, the connection strength between the second lock accessory 72 and the middle shell 12 can be improved.

[0125] Please refer to Figure 7. In some embodiments, the sampling terminal connection 31 and the first adapter terminal connection 32 are located on opposite sides of the battery management main control board 30.

[0126] Understandably, the battery management main control board 30 should have a square structure to meet the wiring and connection requirements of various electrical components. Therefore, the battery management main control board 30 should have a wide edge side 30e arranged opposite each other along its own length direction and a long edge side 30d arranged opposite each other along its own width direction. Then, according to actual usage requirements, sampling terminal connection positions 31 and first adapter terminal connection positions 32 can be respectively provided on the two wide edge sides 30e or the two long edge sides 30d.

[0127] In this way, by using the width or length of the battery management main control board 30 to adapt to the setting position of the sampling component 21 and the adapter, the wiring length of the sampling component 21 and the adapter can be shortened to the greatest extent.

[0128] Please refer to Figure 7. In some embodiments, the battery management main control board 30 has a long edge side 30d that is disposed opposite to each other in the width direction, and the sampling terminal connection position 31 and the first adapter terminal connection position 32 are respectively disposed on the corresponding long edge side 30d.

[0129] Understandably, the long edge side 30d refers to the two edge sides of the battery management main control board 30 along its own length direction. That is, there is at least a distance between the sampling terminal connection position 31 and the first adapter terminal connection position 32, which is equivalent to the width of the battery management main control board 30.

[0130] For example, as shown in Figure 7, when the battery management main control board 30 is disposed on the side of the base assembly and the battery cell monitoring circuit board 40 is disposed on the top surface of the base assembly, the first adapter terminal connection position 32 can be disposed on the long edge side 30d of the battery management main control board 30 away from the battery cell monitoring circuit board 40, and the sampling terminal connection position 31 can be disposed on the long edge side 30d of the battery management main control board 30 close to the battery cell monitoring circuit board 40. Here, the wiring is arranged using the width of the battery management main control board 30, so the transmission circuit can be disposed between the sampling terminal connection position 31 and the first adapter terminal connection position 32.

[0131] Thus, by placing the sampling terminal connection 31 and the first adapter terminal connection 32 on the corresponding long edge side 30d, the width of the battery management main control board 30 can be fully utilized for wiring.

[0132] Please refer to Figures 3 to 6 and Figures 10 to 12. In some embodiments, the electronic control device 100 includes a relay 20, which includes a high-voltage terminal 20a. The high-voltage terminal 20a is connected to a connecting plate 20c. The sampling terminal connection position 31 is located at the edge of the battery management main control board 30 along a first direction, which is the direction in which the high-voltage terminal 20a of the relay 20 extends.

[0133] Understandably, relay 20 is used to control the on / off state of the circuit and is an electrical component in the electronic control device 100. Other electrical components may include shunts, precharge relays 20, and fuses. Typically, relay 20 may include a high-voltage main positive relay 20 and a high-voltage main negative relay 20, and may also include a fast-charging relay 20. The high-voltage terminal 20a of relay 20 is the high-voltage output terminal. The battery management main control board 30 can be directly connected to the high-voltage terminal 20a, or indirectly connected through the sampling component 21, to transmit the high-voltage signal to the battery management main control board 30, that is, to monitor the high-voltage signal of relay 20.

[0134] For example, in the electronic control device 100, the high-voltage switch is a type of connecting switch 20c. The high-voltage switch is used to realize the electrical connection between electrical components in the electronic control device 100. The high-voltage switch can be connected to the relay 20, shunt, fuse, and pre-charge relay 20 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 30 monitors the total voltage of the battery pack by collecting the voltage signal on the high-voltage switch, thereby determining the charging and discharging status of the battery pack and performing SOC estimation. Specifically, the high-voltage switch is connected to the high-voltage terminal 20a of the relay 20 by fasteners such as bolts and pins. The battery management main control board 30 is connected to the high-voltage switch through a high-voltage sampling component 2121. That is, one end of the high-voltage sampling component 2121 is connected to the high-voltage switch, and the other end is directly or indirectly connected to the battery management main control board 30, so that the battery management main control board 30 collects the voltage signal on the high-voltage switch through the high-voltage sampling component 2121.

[0135] Here, the sampling terminal connection position should be set close to the high voltage terminal 20a. Normally, the relay 20 is inserted into the base assembly from the top surface of the base assembly along the direction of gravity. Therefore, the high voltage terminal 20a of the relay 20 faces the bottom surface of the base assembly. When the battery management main control board 30 is set on the side of the base assembly, the sampling terminal connection position 31 is located at the edge of the battery management main control board 30 along the first direction. The protruding direction of the high voltage terminal 20a of the relay 20 in the first direction can also be the standing direction of the battery management main control board 30 relative to the base assembly.

[0136] By positioning the sampling terminal connection 31 on the battery management main control board 30 close to the high-voltage terminal 20a of the relay 20, the wiring length of the sampling component 21 can be further optimized and shortened.

[0137] Please refer to Figures 3 to 6 and Figures 10 to 12. In some embodiments, the electronic control device includes a relay 20. The relay 20 includes a high-voltage terminal 20a and a low-voltage terminal. The high-voltage terminal 20a is connected to the connecting plate 20c. The battery management main control board 30 is also provided with a low-voltage terminal connection position 33. The battery management main control board 30 outputs a low-voltage control signal, which is transmitted to the low-voltage terminal through the low-voltage terminal connection position 33.

[0138] Understandably, in addition to transmitting the high-voltage signal from the high-voltage terminal 20a to the electrical signal processing chip 41 of the battery cell monitoring circuit board 40, the battery management main control board 30 also needs to output a low-voltage control signal to the low-voltage terminal of the relay 20.

[0139] Specifically, an electrical connection between the low-voltage terminal connection point 33 and the low-voltage terminal can be achieved using a low-voltage transmission component. That is, one end of the low-voltage transmission component is connected to the battery management main control board 30 and the other end is connected to the low-voltage terminal.

[0140] Low-voltage transmission components can be sheet-like, wire-like, or wire-like metal components capable of transmitting electrical signals, such as copper sheets, nickel sheets, copper wires, and aluminum wires.

[0141] The low-voltage terminal 20b and the low-voltage transmission component can be electrically connected through welding, screwing, snap-fitting, or plugging. For example, a solder pad area can be provided on the low-voltage terminal 20b, and the low-voltage transmission component and the low-voltage terminal 20b can be connected by welding. Optionally, a crimp nut or welding nut can be crimped to the bottom of the low-voltage terminal 20b, and a hole structure can be provided at one end of the low-voltage transmission component, through which a screw is threaded to the crimp nut or welding nut. Alternatively, if the low-voltage transmission component is a female terminal and the low-voltage terminal 20b is a male terminal, then the two can be connected by plugging.

[0142] Thus, the battery management main control board 30 can also be connected to the low-voltage terminal via the low-voltage terminal connection position 33 to output a low-voltage control signal to the relay 20.

[0143] Please refer to Figure 7. In some embodiments, both the low-voltage terminal connection 33 and the first adapter terminal connection 32 are positioned opposite to the sampling terminal connection 31; and / or...

[0144] Both the low-voltage terminal connection position 33 and the sampling terminal connection position 31 are positioned opposite to the first adapter terminal connection position 32.

[0145] Understandably, the battery management main control board 30 should be a rectangular board structure. Therefore, the battery management main control board 30 should have a length direction and a width direction. Here, the battery management main control board 30 has a long edge side 30d that extends along the length direction and a wide edge side 30e that extends along the width direction.

[0146] Therefore, the low-voltage terminal connection 33 and the first adapter terminal connection 32 are both positioned opposite to the sampling terminal connection 31 on the long edge side 30d of the battery management main control board 30; or, the low-voltage terminal connection 33 and the first adapter terminal connection 32 are both positioned opposite to the sampling terminal connection 31 on the wide edge side 30e of the battery management main control board 30; or, the low-voltage terminal connection 33 and the sampling terminal connection 31 are both positioned opposite to the first adapter terminal connection 32 on the long edge side 30d of the battery management main control board 30; or, the low-voltage terminal connection 33 and the sampling terminal connection 31 are both positioned opposite to the first adapter terminal connection 32 on the wide edge side 30e of the battery management main control board 30.

[0147] In this way, the low-voltage terminal connection position 33 is positioned differently from the sampling terminal connection position 31 or the first adapter terminal connection position 32, thereby meeting the transmission requirements of different electrical signals.

[0148] Please refer to Figure 7. In some embodiments, the battery management main control board 30 has a first region 30c and a second region 30b along its length. At least a portion of the low-voltage terminal connection 33 is located in the first region 30c, and at least a portion of the first adapter terminal connection 32 and at least a portion of the sampling terminal connection 31 are located in the second region 30b.

[0149] Understandably, the first region 30c is the area where the battery management main control board 30 mainly implements low-voltage signal transmission, while the second region 30b is the area where the battery management main control board 30 mainly implements first electrical signal transmission. Therefore, the first region 30c and the second region 30b are set on the long edge side 30d to take advantage of the relatively long length of the long edge side 30d of the battery management main control board 30, thus dividing the first region 30c and the second region 30b into separate areas.

[0150] Furthermore, at least a portion of the low-voltage terminal connection positions 33 refer to most or all of the low-voltage terminal connection positions 33 within the first region 30c; at least a portion of the first transition terminal connection positions 32 and at least a portion of the sampling terminal connection positions 31 refer to most or all of the first transition terminal connection positions 32 and most or all of the sampling terminal connection positions 31 within the second region 30b.

[0151] This improves the reliability of signal transmission in the battery management main control board 30 and makes full use of the structural characteristics of the battery management main control board 30 itself.

[0152] Please refer to Figure 7. In some embodiments, a first creepage structure 30a is provided between at least two adjacent sampling terminal connections 31; and / or,

[0153] A first creepage structure 30a is provided between at least two adjacent first adapter terminal connection positions 32.

[0154] Understandably, the first creepage structure 30a is a structure used to increase the creepage distance between two adjacent sampling terminal connections 31, or to increase the creepage distance between two adjacent first adapter terminal connections 32. Here, creepage distance refers to the minimum distance between two adjacent sampling terminal connections 31, or the minimum distance between two adjacent first adapter terminal connections. For example, in some application scenarios, such as in a 500V system, when the minimum distance between two adjacent sampling terminal connections 31 is less than 12.7mm, the first creepage structure 30a needs to be set.

[0155] The first creepage structure 30a can be a hole structure formed on the battery management main control board 30, which increases the creepage distance between the connection points 31 of two adjacent sampling terminals. Alternatively, the first creepage structure 30a can also be a rib structure formed on the battery management main control board 30. Of course, the first creepage structure 30a can also be a combination of a hole structure and a rib structure, that is, both a hole structure and a rib structure are provided between two adjacent first locking accessories 71.

[0156] Furthermore, in actual use, a first creepage structure 30a can be provided between two adjacent sampling terminal connections 31 in one group, or the first creepage structure 30a can be provided between two adjacent sampling terminal connections 31 in each group.

[0157] Thus, adding the first creepage structure 30a can improve the connection reliability between two adjacent sampling terminal connections 31, or between two adjacent first adapter terminals, especially when the space distance is insufficient, further satisfying the relatively compact installation space, which is conducive to the overall miniaturization design of the electronic control device 100.

[0158] Please refer to Figure 7. In some embodiments, the first creepage structure 30a includes an opening structure formed on the battery management main board 30.

[0159] Understandably, the opening structure is a through hole or groove recessed on the battery management main control board 30. The opening structure can directly increase the distance between the connection points 31 of two adjacent sampling terminals, or directly increase the distance between the connection points of two adjacent first adapter terminals, thereby increasing the creepage distance.

[0160] Please refer to Figure 4. In one embodiment, the battery cell monitoring circuit board 40 is provided with a second adapter terminal connection position 42, which is connected to the adapter. A second creepage structure 40a is provided between at least two adjacent second adapter terminal connection positions 42.

[0161] Understandably, the second adapter terminal connection is the point where the battery cell monitoring circuit board 40 connects to the adapter. The second creepage structure 40a is a structure used to increase the creepage distance between two adjacent second adapter terminal connection positions 42. Here, the creepage distance refers to the minimum distance between two adjacent second adapter terminal connection positions 42. For example, in some application scenarios, such as in a 500V system, when the minimum distance between two adjacent second locking accessories 72 is less than 12.7mm, the second creepage structure 40a needs to be set.

[0162] The second creepage structure 40a can be a hole structure formed on the battery cell monitoring circuit board 40, which increases the creepage distance between two adjacent second adapter terminal connection positions 42. Alternatively, the second creepage structure 40a can also be a raised rib structure formed on the battery cell monitoring circuit board 40. Of course, the second creepage structure 40a can also be a combination of a hole structure and a raised rib structure, that is, both a hole structure and a raised rib structure are provided between two adjacent second adapter terminal connection positions 42.

[0163] Furthermore, in actual use, a second creepage structure 40a can be provided between two adjacent second adapter terminal connection positions 42 in one group, or a second creepage structure 40a can be provided between two adjacent second adapter terminal connection positions 42 in each group.

[0164] Thus, adding a second creepage structure 40a can improve the connection reliability between two adjacent second adapter terminal connection positions 42, especially when the space distance is insufficient, further meet the relatively compact installation space, and is conducive to the overall miniaturization design of the electrical control device 100.

[0165] Please refer to Figures 3 to 6. In one embodiment, a second electrical signal is also included between the battery management main control board 30 and the battery cell monitoring circuit board 40. The adapter includes a second adapter piece 60 that is bent, and the second electrical signal is transmitted between the battery management main control board 30 and the battery cell monitoring circuit board 40 through the second adapter piece 60.

[0166] Understandably, in addition to the first electrical signal transmission, a second electrical signal, i.e., a communication signal, is also transmitted between the battery management main control board 30 and the battery cell monitoring circuit board 40. Therefore, the second adapter 60 is used to realize the communication signal transmission between the battery management main control board 30 and the battery cell monitoring circuit board 40.

[0167] Similarly, the second adapter piece 60 should be a sheet-like structure with thinness and a large contact surface. The connection methods between the second adapter piece 60 and the battery management main control board 30 include, but are not limited to, threaded connection, welding, riveting, and plug-in. Similarly, the connection methods between the second adapter piece 60 and the battery cell monitoring circuit board 40 include, but are not limited to, threaded connection, welding, riveting, and plug-in. In this way, the sheet-like structure of the second adapter piece 60 can meet the requirements of small space occupation and convenient assembly.

[0168] In this way, by using a second adapter plate 60 that is not a wire harness or wire, the space occupied by the wiring can be reduced, the space utilization rate within the base assembly 10 of the electronic control device 100 can be improved, the assembly efficiency of the electronic control device 100 can be improved, and the overall integration of the electronic control device 100 can be improved.

[0169] Please refer to Figures 3 to 9. In one embodiment, the electronic control device 100 includes a third locking accessory 73 and a fourth locking accessory 74. The third locking accessory 73 passes through the second adapter plate 60 and is connected to the battery management main control board 30; the fourth locking accessory 74 passes through the second adapter plate 60 and is connected to the battery cell monitoring circuit board 40.

[0170] Understandably, depending on actual usage requirements, the connection methods between the second adapter piece 60 and the battery management main control board 30 include, but are not limited to, welding, plugging, and threaded connection. In this embodiment, the second adapter piece 60 is locked to the battery management main control board 30 through the third locking accessory 73. The structure of the third locking accessory 73 includes bolt-like structural components such as screws, pins, and rivets, and it can be connected to the battery management main control board 30 by screwing, plugging, riveting, etc.

[0171] Similarly, the connection methods between the second adapter piece 60 and the battery cell monitoring circuit board 40 include, but are not limited to, welding, plugging, and threaded connection. In this embodiment, the second adapter piece 60 is locked to the battery cell monitoring circuit board 40 through the fourth locking accessory 74. The fourth locking accessory 74 includes bolt-like structural components such as screws, pins, and rivets, and can be connected to the battery cell monitoring circuit board 40 by screwing, plugging, riveting, etc.

[0172] For example, the third locking accessory 73 is a bolt. A threaded hole is provided on the battery management main control board 30, and a through hole for the bolt to pass through is provided on the second adapter piece 60. The second adapter piece 60 is placed on the battery management main control board so that the through hole corresponds to the threaded hole. The bolt is passed through the through hole and the threaded hole in sequence to connect the second adapter piece 60 to the battery management main control board 30. Here, the second adapter piece 60 is physically connected to the battery management main control board 30 and also electrically connected to it.

[0173] For example, the fourth locking accessory 74 is a bolt. A threaded hole is provided on the battery cell monitoring circuit board 40, and a through hole for the bolt to pass through is provided on the second adapter piece 60. The second adapter piece 60 is placed on the battery cell monitoring circuit board 40 so that the through hole corresponds to the threaded hole. The bolt is passed through the through hole and the threaded hole in sequence to connect the second adapter piece 60 to the battery cell monitoring circuit board 40. Here, the second adapter piece 60 is both physically connected to the battery cell monitoring circuit board 40 and electrically connected to it.

[0174] Thus, the second adapter plate 60 can be quickly connected to the battery management main control board 30 and the battery cell monitoring circuit board 40 respectively through the third locking accessory 73 and the fourth locking accessory 74, making the assembly process simple and more efficient.

[0175] Please refer to Figure 6. In one embodiment, the second adapter piece 60 includes a third adapter segment 61 and a fourth adapter segment 62 connected to the third adapter segment 61. The third adapter segment 61 is connected to the third lock accessory 73, and the fourth adapter segment 62 is connected to the fourth lock accessory 74.

[0176] Understandably, the third transition segment 61 and the fourth transition segment 62 are structural parts that connect the second transition piece 60 to the third locking accessory 73 and the fourth locking accessory 74, respectively. Each transition segment should have the same shape and structure as the second transition piece 60, also being a sheet-like structure. Furthermore, the third transition segment 61 and the fourth transition segment 62 can be directly or indirectly connected. For example, the third transition segment 61 and the fourth transition segment 62 can be directly connected by integral molding; or, the third transition segment 61 and the fourth transition segment 62 can be indirectly connected by other transition segments.

[0177] For example, the third adapter piece is L-shaped, the third adapter segment 61 and the fourth adapter segment 62 are integrally formed, and the third adapter segment 61 and the fourth adapter segment 62 are set at right angles or approximately right angles to facilitate connection between the battery management main control board 30 and the battery cell monitoring circuit board 40 when they are set perpendicularly to each other.

[0178] For example, the third adapter piece is U-shaped, the third adapter segment 61 and the fourth adapter segment 62 are integrally formed, and the third adapter segment 61 and the fourth adapter segment 62 are arranged in parallel or nearly parallel to suit the connection between the battery management main control board 30 and the battery cell monitoring circuit board 40 when they are arranged in parallel.

[0179] Meanwhile, based on actual assembly requirements, the shape, location, and connection method of the third adapter section 61 and the fourth adapter section 62 were adjusted to adapt to various scenarios.

[0180] By segmenting the second adapter piece 60, it is better able to adapt to assembly needs in different scenarios and improve assembly efficiency.

[0181] Please refer to Figure 8. In one embodiment, the bottom shell 11 is provided with a third boss structure 112, and the third lock attachment 73 is connected to the third boss structure 112.

[0182] Understandably, the third boss structure 112 is a structural part that protrudes from the surface of the bottom shell 11, and the third boss structure 112 is a structural part for cooperating with the third lock attachment 73.

[0183] For example, when the third locking accessory 73 is a bolt, the third boss structure 112 is provided with a threaded hole adapted to the bolt; or, when the third locking accessory 73 is a pin, the third boss structure 112 is provided with a insertion hole adapted to the pin.

[0184] Thus, by adding a third boss structure 112 to the bottom shell 11, the connection strength between the third lock accessory 73 and the bottom shell 11 can be improved.

[0185] In one embodiment, the fourth transition section 62 is integrally injection molded with the middle shell 12.

[0186] Understandably, since the battery cell monitoring circuit board 40 and the battery management main control board 30 are separately mounted on the base assembly 10, that is, the battery cell monitoring circuit board 40 and the battery management main control board 30 have a specific installation order, it is difficult to connect the two through the second adapter piece 60. The main reason is that the second adapter piece 60 has a small structural volume, is easy to lose when placed alone in the assembly process, and is also inconvenient for operators to pick up alone, resulting in a high wear and tear rate.

[0187] To solve the above problems, the fourth adapter segment 62 of the second adapter piece 60 is integrally injection molded with the middle shell 12. Specifically, the fourth adapter segment 62 and the middle shell 12 can be injection molded together by in-mold injection molding. In this way, the second adapter piece 60 is connected to the middle shell 12 through the fourth adapter segment 62. Then, during material transfer, it moves synchronously with the middle shell 12. Furthermore, by passing the fourth locking accessory 74 through the connection between the fourth adapter segment 62 and the middle shell 12, the connection between the middle shell 12 and the battery cell monitoring circuit board 40 can be satisfied, as can the connection between the fourth adapter segment 62 and the battery cell monitoring circuit board 40.

[0188] In this way, the fourth adapter section 62 and the middle shell 12 are integrally injection molded, which simplifies the material preparation and transfer process in the assembly process, and reduces the wear and tear of the second adapter piece 60.

[0189] Please refer to Figure 9. In one embodiment, the middle shell 12 is provided with a fourth boss structure 122, the fourth adapter section 62 is placed at the fourth boss structure 122 and integrally injection molded on the fourth boss structure, and the fourth lock accessory 74 is connected to the fourth boss structure 122.

[0190] Understandably, the fourth boss structure 122 is a structural part that protrudes from the surface of the middle shell 12, and the fourth boss structure 122 is a structural part for cooperating with the fourth lock attachment 74.

[0191] Since the fourth transition section 62 is integrally injection molded at the fourth boss structure 122, and the fourth transition section 62 and the middle shell 12 are connected, in order to facilitate the installation of the fourth locking accessory 74, through holes are provided at the fourth transition section 62 and the fourth boss structure 122 so that the fourth locking accessory 74 can be adapted to the through holes.

[0192] Thus, the addition of a fourth boss structure 122 to the bottom shell 11 can improve the connection strength between the fourth lock accessory 74 and the middle shell 12.

[0193] Please refer to Figures 3 to 12. In one specific embodiment, the electronic control device 100 includes a connecting plate 20c, a sampling component 21, an adapter, a first lock accessory 71, a second lock accessory 72, a battery management main control board 30, and a battery cell monitoring circuit board 40.

[0194] The connecting plate 20c is used to connect the power supply circuit between the power battery system and the load; at least a portion of the connecting plate 20c is provided with a sampling element 21, which is used to collect the first electrical signal on at least a portion of the connecting plate 20c; the battery cell monitoring circuit board 40 is provided with an electrical signal processing chip 41; the battery management main control board 30 is provided with a transmission circuit, which is used to form a path between the battery cell monitoring circuit board 40 and the sampling element 21, so as to transmit the first electrical signal from the connecting plate 20c to the electrical signal processing chip 41.

[0195] The adapter is used to electrically connect the battery management main control board 30 and the battery cell monitoring circuit board 40, and to connect the transmission circuit and the electrical signal processing chip 41.

[0196] The battery management main control board 30 is provided with a sampling terminal connection position 31 and a first adapter terminal connection position 32. The transmission circuit connects the sampling terminal connection position 31 and the first adapter terminal connection position 32. The sampling component 21 is connected to the sampling terminal connection position 31, and the adapter is connected to the first adapter terminal connection position 32.

[0197] The battery management main control board 30 has a long edge side 30d that is arranged opposite to each other along the width direction, and the sampling terminal connection position 31 and the first adapter terminal connection position 32 are respectively provided on the corresponding long edge side 30d.

[0198] The relay 20 includes a high-voltage terminal 20a and a low-voltage terminal. The high-voltage terminal 20a is connected to the connecting plate 20c. The battery management main control board 30 also has a low-voltage terminal connection position 33. The battery management main control board 30 outputs a low-voltage control signal, which is transmitted to the low-voltage terminal via the low-voltage terminal connection position 33. The low-voltage terminal connection position 33 and the first adapter terminal connection position 32 are both positioned opposite to the sampling terminal connection position 31.

[0199] Along the length of the battery management main control board 30, the battery management main control board 30 has a first region 30c and a second region 30b, at least a portion of the low-voltage terminal connection position 33 is located in the first region 30c, and at least a portion of the first adapter terminal connection position 32 and at least a portion of the sampling terminal connection position 31 are located in the second region 30b.

[0200] A first creepage structure 30a is provided between at least two adjacent sampling terminal connection points 31; a first creepage structure 30a is provided between at least two adjacent first adapter terminal connection points 32. The battery cell monitoring circuit board 40 is provided with a second adapter terminal connection point 42, which is connected to the adapter, and a second creepage structure is provided between at least two adjacent second adapter terminal connection points 42.

[0201] The electronic control device 100 includes a base assembly 10, which has a side surface 10a and a top surface 10b connected to the side surface 10a; a battery cell monitoring circuit board 40 is disposed on the top surface 10b, and a battery management main control board 30 is disposed on the side surface 10a. A first locking accessory 71 passes through one end of the adapter and is connected to the battery management main control board 30; a second locking accessory 72 passes through the other end of the adapter and is connected to the battery cell monitoring circuit board 40.

[0202] The adapter includes a first adapter piece 50 that is bent. The first adapter piece 50 includes a first adapter segment 51 and a second adapter segment 52 connected to the first adapter segment 51. The first adapter segment 51 is connected to a first locking accessory 71, and the second adapter segment 52 is connected to the second locking accessory 72. The first locking accessory 71 is connected to the base assembly 10; the second locking accessory 72 is connected to the base assembly 10. The base assembly 10 includes a bottom shell 11 and a middle shell 12 disposed on the bottom shell 11. The first adapter segment 51 and the battery management main control board 30 are connected to the bottom shell 11 through the first locking accessory 71; the second adapter segment 52 and the battery cell monitoring circuit board 40 are connected to the middle shell 12 through the second locking accessory 72. The bottom shell 11 is provided with a first boss structure 111, and the first locking accessory 71 is connected to the first boss structure 111. The middle shell 12 is provided with a second boss structure 121, and a second adapter section 52 is placed at the second boss structure 121 and integrally injection molded onto the second boss structure 121. A second locking accessory 72 is connected to the second boss structure 121. Referring to FIG2, this application embodiment provides a battery device 1001, which includes one or more battery cell assemblies 200. The battery device 1001 disclosed in this application embodiment can be used in electrical devices that use the battery device 1001 as a power source or in various energy storage devices and energy storage 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. Among them, electric toys can include fixed 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.

[0203] In some embodiments, the battery cell assembly 200 is typically formed by arranging a plurality of battery cells.

[0204] 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.

[0205] In some embodiments, the battery device 1001 may be a battery pack, which includes a housing 300 and one or more battery cell assemblies 200, the battery cell assemblies 200 being housed in the housing 300.

[0206] As an example, the battery cell assembly 200 can be a battery module, and the battery cell assembly 200 can be housed in the housing 300 by fixing the battery module in the housing 300.

[0207] 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.

[0208] As an example, the housing 300 may include a first sub-housing 300 and a second sub-housing 300. The first sub-housing 300 and the second sub-housing 300 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, which can be sealed or unsealed. The first sub-housing 300 may be a top cover or a bottom plate.

[0209] 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.

[0210] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0211] Please refer to Figure 1, which is a structural schematic diagram 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 provided 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.

[0212] 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 electrically controlled device for monitoring a power battery system and a load, characterized in that, include: A connecting plate is used to connect the power battery system and the load in the power supply circuit. The sampling element is provided on at least a portion of the connecting bar, and the sampling element is used to collect a first electrical signal on at least a portion of the connecting bar; A battery cell monitoring circuit board, wherein the battery cell monitoring circuit board is equipped with an electrical signal processing chip; A battery management main control board; the battery management main control board is provided with a transmission circuit, which is used to form a path between the battery cell monitoring circuit board and the sampling device, so as to transmit the first electrical signal from the connecting plate to the electrical signal processing chip.

2. The electrically controlled device according to claim 1, wherein The electronic control device includes an adapter, which is used to electrically connect the battery management main control board and the battery cell monitoring circuit board, and to connect the transmission circuit and the electrical signal processing chip.

3. The electrically controlled device of claim 2, wherein, The battery management main control board is provided with a sampling terminal connection position and a first adapter terminal connection position. The transmission circuit connects the sampling terminal connection position and the first adapter terminal connection position. The sampling component is connected to the sampling terminal connection position, and the adapter component is connected to the first adapter terminal connection position.

4. The electrically controlled device of claim 2, wherein, The electronic control device includes a base assembly having a side surface and a top surface connected to the side surface; the battery cell monitoring circuit board is located on the top surface, and the battery management main control board is located on the side surface.

5. The electrically controlled device according to claim 4, wherein The electronic control device includes a first locking accessory and a second locking accessory. The first locking accessory is inserted through one end of the adapter and connected to the battery management main control board. The second locking accessory is inserted through the other end of the adapter and connected to the battery cell monitoring circuit board.

6. The electrically controlled device according to claim 5, wherein The adapter includes a first adapter piece that is bent, the first adapter piece includes a first adapter segment and a second adapter segment connected to the first adapter segment, the first adapter segment is connected to the first lock accessory, and the second adapter segment is connected to the second lock accessory.

7. The electrically controlled device according to claim 6, wherein The first lock accessory is connected to the base assembly; the second lock accessory is connected to the base assembly.

8. The electrically controlled device according to claim 7, wherein The base assembly includes a bottom shell and a middle shell disposed on the bottom shell. The first adapter section and the battery management main control board are connected to the bottom shell through the first locking accessory; the second adapter section and the battery cell monitoring circuit board are connected to the middle shell through the second locking accessory.

9. The electrically controlled device of claim 8, wherein, The bottom shell is provided with a first boss structure, and the first lock accessory is connected to the first boss structure.

10. The electrically controlled device of claim 8, wherein, The second transition section is integrally injection molded with the middle shell.

11. The electrically controlled device according to claim 10, wherein The middle shell is provided with a second boss structure, the second adapter section is placed at the second boss structure and integrally injection molded on the second boss structure, and the second locking accessory is connected to the second boss structure.

12. The electrically controlled device according to any one of claims 3 to 11, wherein The sampling terminal connection and the first adapter terminal connection are located on opposite sides of the battery management main control board.

13. The electrically controlled device according to claim 12, wherein The battery management main control board has long edge sides that are arranged opposite each other along the width direction, and the sampling terminal connection position and the first adapter terminal connection position are respectively located on the corresponding long edge sides.

14. The electrically controlled device of claim 12, wherein, The electric control device comprises a relay, the relay comprises a high-voltage terminal, the high-voltage terminal is connected with the connecting bar, the sampling terminal connection position is located at the edge of the battery management main control board along the first direction, and the first direction is the extension direction of the high-voltage terminal of the relay.

15. An electrically controlled device according to any one of claims 3 to 11, wherein The electric control device comprises a relay, the relay comprises a high-voltage terminal and a low-voltage terminal, the high-voltage terminal is connected with the connecting bar, the battery management main control board is also provided with a low-voltage terminal connection position, the battery management main control board outputs a low-voltage control signal, and the low-voltage control signal is transmitted to the low-voltage terminal through the low-voltage terminal connection position.

16. The electrically controlled device of claim 15, wherein, The low-voltage terminal connection position and the first adapter terminal connection position are arranged opposite to the sampling terminal connection position; and / or, The low-voltage terminal connection position and the sampling terminal connection position are arranged opposite to the first adapter terminal connection position.

17. The electrically controlled device of claim 15, wherein, In the length direction of the battery management main control board, the battery management main control board has a first region and a second region, at least part of the low-voltage terminal connection position is located in the first region, at least part of the first adapter terminal connection position and at least part of the sampling terminal connection position are located in the second region.

18. The electrically controlled device according to any one of claims 3 to 17, wherein First creeping structures are arranged between at least two adjacent sampling terminal connection positions; and / or, First creeping structures are arranged between at least two adjacent first adapter terminal connection positions.

19. The electrically controlled device according to claim 18, wherein, The first creeping structure comprises an opening structure formed on the battery management main control board.

20. The electrically controlled device according to any one of claims 3 to 17, wherein The battery monomer monitoring circuit board is provided with a second adapter terminal connection position, the second adapter terminal connection position is connected with the adapter, and second creeping structures are arranged between at least two adjacent second adapter terminal connection positions.

21. The electrically controlled device according to any one of claims 1 to 20, wherein The battery management main control board and the battery monomer monitoring circuit board further comprise a second electric signal, the adapter comprises a second adapter sheet arranged in a bending mode, and the second electric signal is transmitted between the battery management main control board and the battery monomer monitoring circuit board through the second adapter sheet.

22. A battery device, characterized by The electric control device comprises a relay, the relay comprises a high-voltage terminal, the high-voltage terminal is connected with the connecting bar, the sampling terminal connection position is located at the edge of the battery management main control board along the first direction, and the first direction is the extension direction of the high-voltage terminal of the relay.

23. An electrical device, comprising: The electric control device comprises a relay, the relay comprises a high-voltage terminal and a low-voltage terminal, the high-voltage terminal is connected with the connecting bar, the battery management main control board is also provided with a low-voltage terminal connection position, the battery management main control board outputs a low-voltage control signal, and the low-voltage control signal is transmitted to the low-voltage terminal through the low-voltage terminal connection position. The low-voltage terminal connection position and the first adapter terminal connection position are arranged opposite to the sampling terminal connection position; and / or, The low-voltage terminal connection position and the sampling terminal connection position are arranged opposite to the first adapter terminal connection position. In the length direction of the battery management main control board, the battery management main control board has a first region and a second region, at least part of the low-voltage terminal connection position is located in the first region, at least part of the first adapter terminal connection position and at least part of the sampling terminal connection position are located in the second region. First creeping structures are arranged between at least First creeping structures are arranged between at least two adjacent first adapter terminal connection positions. The first creeping structures comprise opening structures formed on the battery management main control board. The battery monomer monitoring circuit board is provided with The battery management main control board and the battery monomer monitoring circuit board further comprise a second electric The electric control device comprises a relay, the relay comprises a high-voltage terminal, the high-

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