Electric control apparatus, battery apparatus and electric apparatus

Abstract

Disclosed in the present application are an electric control apparatus (100), a battery apparatus (1001), and an electric apparatus. The electric control apparatus (100) comprises: a base assembly (10), a battery management main control board (40), a plurality of high-voltage relays (20), a first low-voltage transmission member (31) and a second low-voltage transmission member (32), wherein one end of the first low-voltage transmission member (31) is connected to low-voltage terminals (20a) of some of the high-voltage relays (20), and the other end is connected to a low-voltage transfer region (40a) of the battery management main control board (40); and one end of the second low-voltage transmission member (32) is connected to low-voltage terminals (20a) of the remaining high-voltage relays (20), and the other end is connected to the low-voltage transfer region (40a) of the battery management main control board (40), the effective length of the first low-voltage transmission member (31) being greater than the effective length of the second low-voltage transmission member (32).

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, in related products, after multiple relays are arranged, the low-voltage terminals of the first relay are far apart. If they are directly connected to the BMU, it will be difficult to centrally set the low-voltage modules on the BMU. In addition, if the circuit on the BMU is modified, it will also cause the high and low voltage lines to cross, affecting the electrical performance of the BMU. 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 relatively poor electrical performance of the BMU board in the electronic control device. 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] Base assembly;

[0009] A battery management main control board is disposed on the base assembly, and the battery management main control board has a low-voltage conversion area;

[0010] Multiple high-voltage relays are arranged side by side on the base assembly, and each high-voltage relay is provided with a low-voltage terminal, with each low-voltage terminal facing the battery management main control board.

[0011] A first low-voltage transmission component, one end of which is connected to the low-voltage terminal of a portion of the high-voltage relay, and the other end of which is connected to the low-voltage switching area of ​​the battery management main control board;

[0012] The second low-voltage transmission component has one end connected to the low-voltage terminal of the remaining high-voltage relay, and the other end connected to the low-voltage switching area of ​​the battery management main control board.

[0013] Wherein, the effective length of the first low-voltage transmission component is greater than the effective length of the second low-voltage transmission component.

[0014] In some embodiments, the first low-voltage transmission component includes a first connection portion, a second connection portion, and a third connection portion connected to the first connection portion and the second connection portion, wherein the first connection portion is connected to the low-voltage terminal of a portion of the high-voltage relay, and the second connection portion is connected to the low-voltage switching area of ​​the battery management main control board.

[0015] In some embodiments, there are two third connecting parts, each of which is arranged side by side, and a pre-connection structure is provided between the two third connecting parts.

[0016] In some embodiments, the electronic control device includes a first locking attachment, and the first connection portion is locked to the low-voltage terminal via the first locking attachment.

[0017] In some embodiments, the electronic control device includes a second locking attachment, and the second connection portion is locked to the battery management main control board via the second locking attachment.

[0018] In some embodiments, the base assembly includes a base shell, to which the second locking accessory is attached.

[0019] In some embodiments, the bottom shell is provided with a boss structure, the battery management main control board is disposed on the bottom shell and covers the boss structure, and the second lock accessory is connected to the bottom shell through the boss structure.

[0020] In some embodiments, the base assembly includes a middle shell, and the third connecting portion is integrally injection molded with the middle shell.

[0021] In some embodiments, the middle shell has an opening for exposing the pre-connected structure, so that the pre-connected structure can be disconnected through the opening.

[0022] In some embodiments, the second low-voltage transmission component includes a fourth connection portion and a fifth connection portion connected to the fourth connection portion, the fourth connection portion being connected to the low-voltage terminal of the remaining portion of the high-voltage relay, and the fifth connection portion being connected to the low-voltage switching area of ​​the battery management main control board.

[0023] In some embodiments, the electronic control device includes a third locking accessory, and the fourth connection portion is locked to the low-voltage terminal via the third locking accessory.

[0024] In some embodiments, the fifth connection portion is plugged into and connected to the battery management main control board.

[0025] 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.

[0026] Thirdly, an electrical device is provided, including the battery device described above, the battery device being used to store or provide electrical energy.

[0027] The beneficial effect of the electronic control device provided in this application embodiment is that: for each high-voltage relay with different installation positions, the distance between its low-voltage terminal and the low-voltage transfer area of ​​the battery management main control board is different. Therefore, according to the different distances between the low-voltage terminal and the low-voltage transfer area, low-voltage transmission components with different effective lengths can be selected. That is, the low-voltage terminal that is far from the low-voltage transfer area is connected through the first low-voltage transmission component, and the low-voltage terminal that is closer to the low-voltage transfer area is connected through the second low-voltage transmission component. Thus, there is no need to modify the circuit of the battery management main control board to ensure the electrical performance of the battery management main control board.

[0028] The beneficial effects of the second and third aspects can be referred to the beneficial effects of the first aspect, and will not be elaborated here. Attached Figure Description

[0029] 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.

[0030] Figure 1 is a structural schematic diagram of the vehicle provided in an embodiment of this application;

[0031] Figure 2 is an exploded view of the battery device provided in an embodiment of this application;

[0032] Figure 3 is a schematic diagram of the structure of the electronic control device provided in the embodiment of this application after removing the middle shell;

[0033] Figure 4 is a schematic diagram of the structure of the first low-voltage transmission component of the electronic control device provided in the embodiment of this application;

[0034] Figure 5 is a schematic diagram of the structure of the first low-voltage transmission component of the electronic control device provided in the embodiment of this application;

[0035] Figure 6 is a front view of the battery management main control board of the electronic control device provided in the embodiment of this application;

[0036] Figure 7 is a schematic diagram of the bottom shell of the electronic control device provided in the embodiment of this application;

[0037] Figure 8 is a schematic diagram of the structure of the middle shell of the electronic control device provided in the embodiment of this application;

[0038] Figure 9 is a schematic diagram of the structure of the high-voltage relay of the electronic control device provided in the embodiment of this application.

[0039] 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, boss structure; 121, opening; 20, high-voltage relay; 20a, low-voltage terminal; 31, first low-voltage transmission component; 311, first connecting part; 312, second connecting part; 313, third connecting part; 314, pre-connection structure; 32, second low-voltage transmission component; 321, fourth connecting part; 322, fifth connecting part; 40, battery management main control board; 40a, low-voltage transfer area; 51, first locking accessory; 52, second locking accessory; 53, third locking accessory. Embodiments of the present invention

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0045] 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).

[0046] 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.

[0047] 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.

[0048] A battery apparatus may include one or more battery cell assemblies to provide voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via busbars. The battery apparatus also includes a high-voltage distribution unit (BDU) and a battery management system (BMS). The BDU primarily controls the smooth operation of the battery's charging and discharging circuits, while the BMS is responsible for intelligent management and maintenance of the battery system, monitoring battery status, and ensuring safe battery operation. A battery apparatus may be a battery pack, which typically includes a housing and one or more battery cell assemblies housed within the housing. Power from the battery cell assemblies is transmitted to the high-voltage distribution unit, and then to the electrical equipment. The voltage, current, and temperature parameters of the battery cell assemblies are collected and monitored by the BMS, which controls the on / off state of the circuits in the high-voltage distribution unit, thereby controlling the power transmission from the battery cell assemblies to the electrical equipment's BMS.

[0049] 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.

[0050] 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.

[0051] However, in the high-voltage power distribution equipment of related products, the relays are usually arranged side by side along the length of the high-voltage power distribution equipment. Therefore, the distance between the low-voltage terminals of each relay and the low-voltage transfer area of ​​the BMU board is different. In order to meet the connection requirements, the low-voltage transfer area of ​​the BMU board needs to be adjusted, that is, its circuit is modified. This is the main reason why the high and low voltage lines in the BMU board cross and affect the electrical performance of the BMU.

[0052] In view of this, the present application provides an electronic control device having two low-voltage transmission components with different effective lengths: a first low-voltage transmission component and a second low-voltage transmission component. Thus, the effective length of the low-voltage transmission component can be selected based on the distance between the low-voltage terminal of the current high-voltage relay and the low-voltage transfer area of ​​the battery management main control board. This ensures that the end of each low-voltage transmission component furthest from the low-voltage terminal of the high-voltage relay can be connected to the low-voltage transfer area of ​​the battery management main control board. This reduces or even eliminates the need for circuit modifications to the battery management main control board, thereby ensuring its electrical performance.

[0053] Please refer to Figures 3 to 6 and Figure 9. This application provides an electronic control device 100, including a base assembly 10, a battery management main control board 40, multiple high-voltage relays 20, a first low-voltage transmission component 31, and a second low-voltage transmission component 32.

[0054] The battery management main control board 40 is located on the base assembly 10, and the battery management main control board 40 has a low voltage transfer area 40a;

[0055] Each high-voltage relay 20 is arranged side by side on the base assembly 10, and each high-voltage relay 20 is provided with a low-voltage terminal 20a, and each low-voltage terminal 20a faces the battery management main control board 40.

[0056] One end of the first low-voltage transmission component 31 is connected to the low-voltage terminal 20a of a portion of the high-voltage relay 20, and the other end is connected to the low-voltage transfer area 40a of the battery management main control board 40.

[0057] One end of the second low-voltage transmission component 32 is connected to the low-voltage terminal 20a of the remaining high-voltage relay 20, and the other end is connected to the low-voltage transfer area 40a of the battery management main control board 40.

[0058] The effective length of the first low-voltage transmission component 31 is greater than the effective length of the second low-voltage transmission component 32.

[0059] 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.

[0060] The battery management main control board 40 is the main component in the battery management system. Here, the battery management main control board 40 can be the circuit board of the BMU. The battery management system should have a corresponding protective shell to protect the internal components such as the battery management main control board 40. Therefore, by removing the protective shell and placing the battery management main control board 40 on the base assembly 10, the space occupied by the protective shell can be saved. That is, the various components in the battery management system and the high-voltage power distribution device are all positioned according to the base assembly 10 as the supporting carrier.

[0061] The high-voltage 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, and fuses. Typically, the high-voltage relay 20 may include a high-voltage main positive relay and a high-voltage main negative relay, and may also include a fast-charging relay. The low-voltage terminal 20a of the high-voltage relay 20 is the low-voltage output terminal. The battery management main control board 40 is connected to the low-voltage terminal 20a through a low-voltage transmission component to transmit the low-voltage signal to the battery management main control board 40, that is, to monitor the low-voltage signal of the high-voltage relay 20.

[0062] The low-voltage transmission component is used to transmit the low-voltage terminal 20a of the high-voltage relay 20 to the battery management main control board 40. The low-voltage transmission component can be a sheet, wire, or wire-like metal component capable of transmitting electrical signals, such as copper sheet, nickel sheet, copper wire, or aluminum wire.

[0063] The effective length of the low-voltage transmission component refers to the length from the end of the low-voltage transmission component connected to the low-voltage terminal 20a to the end of the low-voltage transmission component connected to the battery management main control board 40. Here, when measuring the effective length of the low-voltage transmission component, a measuring tape can be used to measure it close to the low-voltage transmission component along the extension direction of the low-voltage transmission component, rather than the shortest distance from one end of the low-voltage transmission component to the other end.

[0064] Here, the connection between the low-voltage transmission component and the low-voltage terminal 20a includes, but is not limited to, plug-in, snap-in, welding, threaded connection, etc.; and the connection between the low-voltage transmission component and the battery management main control board 40 includes, but is not limited to, plug-in, snap-in, welding, threaded connection, etc.

[0065] For example, as shown in Figure 3, there are three high-voltage relays 20. For ease of explanation, the three high-voltage relays 20 arranged side by side along the length of the base assembly 10 are named the first high-voltage relay, the middle high-voltage relay, and the last high-voltage relay, respectively. The battery management main control board 40 is located on the side of the low-voltage terminal 20a of each high-voltage relay 20. The low-voltage terminal 20a of the middle high-voltage relay and the low-voltage terminal 20a of the last high-voltage relay correspond to the low-voltage transfer area 40a of the battery management main control board 40. That is, these two high-voltage relays... The low-voltage terminal 20a of the electrical appliance 20 is close to the low-voltage transfer area 40a, which meets the requirements for direct plug-in and soldering. In this case, it can be electrically connected to the battery management main control board 40 through the second low-voltage transmission component 32. However, the low-voltage terminal 20a of the first high-voltage relay is far from the low-voltage transfer area 40a. In this case, it needs to be electrically connected to the battery management main control board 40 through the first low-voltage transmission component 31. Finally, the end of each low-voltage transmission component that is far from the low-voltage terminal 20a can be sequentially connected to the low-voltage transfer area 40a of the battery management main control board 40.

[0066] The electronic control device 100 provided in this application embodiment has different distances between the low-voltage terminals 20a and the low-voltage transfer area 40a of the battery management main control board 40 for each high-voltage relay 20 with different installation positions. Therefore, according to the different distances between the low-voltage terminals 20a and the low-voltage transfer area 40a, low-voltage transmission components with different effective lengths can be selected. That is, the low-voltage terminals 20a that are far away from the low-voltage transfer area 40a are connected through the first low-voltage transmission component 31, and the low-voltage terminals 20a that are closer to the low-voltage transfer area 40a are connected through the second low-voltage transmission component 32. Thus, there is no need to modify the circuit of the battery management main control board 40 to ensure the electrical performance of the battery management main control board 40.

[0067] Please refer to Figures 3 and 4. In some embodiments, the first low-voltage transmission component 31 includes a first connection portion 311, a second connection portion 312, and a third connection portion 313 connected to the first connection portion 311 and the second connection portion 312. The first connection portion 311 is connected to the low-voltage terminal 20a of a portion of the high-voltage relay 20, and the second connection portion 312 is connected to the low-voltage transfer area 40a of the battery management main control board 40.

[0068] Understandably, the first connecting part 311, the third connecting part 313, and the second connecting part 312 are sequentially connected to form the first low-voltage transmission component 31. The first connecting part 311 is used to connect to the low-voltage terminal 20a of the high-voltage relay 20. The connection between the first connecting part 311 and the low-voltage terminal 20a can be, but is not limited to, plug-in, snap-in, welding, or threaded connection. The second connecting part 312 is used to connect to the low-voltage transfer area 40a of the battery management main control board 40. The connection between the second connecting part 312 and the low-voltage transfer area 40a can be, but is not limited to, plug-in, snap-in, welding, or threaded connection. The third connecting part 313 is suitable for connecting the first connecting part 311 and the second connecting part 312. Therefore, the shape of the third connecting part 313 can be adaptively adjusted according to actual wiring or reversal requirements. For example, the third connecting part 313 can be L-shaped, U-shaped, or irregularly shaped.

[0069] Here, the effective length of the first low-voltage transmission component 31 should be the sum of the effective lengths of the three connecting parts, especially the third connecting part 313. The effective length of the third connecting part 313 can be appropriately increased or decreased according to the wiring or reversing requirements.

[0070] Thus, the effective length of each connection part of the first low-voltage transmission component 31 can be adjusted according to the actual wiring or reversal requirements to adapt to the connection requirements between the low-voltage terminal 20a of the current high-voltage relay 20 and the battery management main control board 40.

[0071] Please refer to Figure 4. In some embodiments, there are two third connecting parts 313, which are arranged side by side, and a pre-connection structure 314 is provided between the two third connecting parts 313.

[0072] Understandably, the high-voltage relay 20 typically has two low-voltage terminals 20a. Therefore, the low-voltage transmission element formed by the two first connecting parts 311, the two second connecting parts 312, and the two third connecting parts 313 can be referred to as the first low-voltage transmission element 31. That is, the number of third connecting parts 313 is also two, to match the two low-voltage terminals 20a of the high-voltage relay 20.

[0073] However, in actual installation, the effective length of the third connection part 313 is usually quite long in order to adapt to the corresponding wiring or reversing requirements. This affects the assembly efficiency of the first low-voltage transmission component 31. Without the pre-connection structure 314, two third connection parts 313 need to be installed separately. However, with the pre-connection structure 314, both third connection parts 313 can be installed at once. Therefore, the pre-connection structure 314 is a structural component used to improve the assembly efficiency of the first low-voltage transmission component 31.

[0074] Here, depending on the application scenario, the material of the pre-connection structure 314 can be the same as that of the third connection part 313, that is, the pre-connection structure 314 can also be made of metal. In this case, the pre-connection structure 314 can be integrally formed with the third connection part 313, and the pre-connection structure 314 can be removed or disconnected after the first low-voltage transmission component 31 is assembled, so as to ensure that the two third connection parts 313 are connected without short-circuiting. Alternatively, the material of the pre-connection structure 314 can also be different from that of the third connection part 313. For example, the material of the pre-connection structure 314 can be an insulating material, such as resin or rubber. In this case, the pre-connection structure 314 does not need to be removed or disconnected after the first low-voltage transmission component 31 is assembled.

[0075] The pre-connection structure 314 can be in the form of a strip structure, a sheet structure, or a block structure. When the effective length of the third connection part 313 is long, the number of pre-connection structures 314 can be multiple. Furthermore, they are spaced apart in the extension direction of the third connection part 313 to achieve the integration of the two third connection parts 313, thereby improving the assembly efficiency of the first low-voltage transmission component 31.

[0076] Thus, by setting the pre-connection structure 314, the assembly efficiency of the first low-voltage transmission component 31 can be effectively improved.

[0077] Please refer to Figures 3 and 9. In some embodiments, the electronic control device 100 includes a first locking attachment 51, and the first connection portion 311 is locked and connected to the low-voltage terminal 20a through the first locking attachment 51.

[0078] Understandably, the structure of the first locking accessory 51 includes screws, pins, and rivets, etc., and the first locking accessory 51 enables the first connecting part 311 to be locked and connected to the low-voltage terminal 20a.

[0079] For example, the first locking accessory 51 is a bolt, which has a threaded hole on the low-voltage terminal 20a and a through hole for the bolt to pass through on the first connecting part 311. The first connecting part 311 is placed on the low-voltage terminal 20a such that the through hole corresponds to the threaded hole. The bolt passes through the through hole and the threaded hole in sequence to connect the first connecting part 311 to the low-voltage terminal 20a. Here, the first connecting part 311 is both physically connected to the low-voltage terminal 20a and electrically connected to it.

[0080] Thus, the first connecting part 311 can be quickly connected to the low-voltage terminal 20a through the first locking accessory 51, and the assembly process is simple and more efficient.

[0081] Please refer to Figures 3 and 9. In some embodiments, the electronic control device 100 includes a second locking attachment 52, and the second connection part 312 is locked and connected to the battery management main control board 40 through the second locking attachment 52.

[0082] Understandably, the structure of the second locking accessory 52 includes screws, pins, and rivets, etc., and the second connecting part 312 is locked and connected to the battery management main control board 40 through the second locking accessory 52.

[0083] For example, the second lock accessory 52 is a bolt. A threaded hole is provided on the battery management main control board 40, and a through hole for the bolt to pass through is provided on the second connecting part 312. The second connecting part 312 is placed on the battery management main control 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 connecting part 312 to the battery management main control board 40. Here, the second connecting part 312 is physically connected to the battery management main control board 40 and also electrically connected.

[0084] Thus, the second connecting part 312 can be quickly connected to the battery management main control board 40 through the second locking attachment 52, which simplifies the assembly process and increases efficiency.

[0085] Please refer to Figures 3 and 7. In some embodiments, the base assembly 10 includes a base shell 11, and a second locking attachment 52 is connected to the base shell 11.

[0086] Understandably, the battery management main control board 40 is mounted on the base assembly 10, and the second connecting part 312 is connected to the battery management main control board 40 via the second locking attachment 52. Therefore, during assembly, screws, pins, and other fasteners are needed to fix the battery management main control board 40 to the base assembly 10, and the second locking attachment 52 is needed to fix the second connecting part 312 to the battery management main control board 40. This results in a greater number of steps and components used for fixing. To solve this problem, the second locking attachment 52 is connected to the bottom shell 11 of the base assembly 10. That is, the second locking attachment 52 is sequentially inserted through the second connecting part 312 and the battery management main control board 40, and finally connected to the bottom shell 11 of the base assembly 10. Here, the second locking attachment 52 can complete the connection requirements between the second connecting part 312 and the battery management main control board 40, and between the battery management main control board 40 and the bottom shell 11 of the base assembly 10, in a single installation. For example, threaded holes or mounting holes can be provided on the bottom shell 11 of the base assembly 10 to meet the connection requirements between the second lock accessory 52 and the bottom shell 11 of the base assembly 10.

[0087] Here, the bottom shell 11 is the main body of the base assembly 10, which is used to connect various electrical components, the battery management main control board 40, etc.

[0088] Thus, by connecting the second locking attachment 52 to the bottom shell 11 of the base assembly 10, the installation process of the battery management main control board 40 and the second connecting part 312 is simplified, and the number of installation parts can also be reduced.

[0089] Please refer to Figure 7. In some embodiments, the bottom shell 11 is provided with a boss structure 111, the battery management main control board 40 is provided on the bottom shell 11 and covers the boss structure 111, and the second lock accessory 52 is connected to the bottom shell 11 through the boss structure 111.

[0090] Understandably, the boss structure 111 is a structural part that protrudes from the surface of the bottom shell 11, and the boss structure 111 is a structural part for cooperating with the second locking attachment 52.

[0091] For example, when the second locking accessory 52 is a bolt, the boss structure 111 is provided with a threaded hole adapted to the bolt; or, when the second locking accessory 52 is a pin, the boss structure 111 is provided with a plug hole adapted to the pin.

[0092] Thus, by adding a boss structure 111 to the bottom shell 11, the connection strength between the second lock accessory 52 and the bottom shell 11 can be improved.

[0093] Please refer to Figures 3 and 8. In some embodiments, the base assembly 10 includes a middle shell 12, and the third connecting part 313 is integrally injection molded with the middle shell 12.

[0094] Understandably, 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.

[0095] For example, several mounting slots are opened on the top surface 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 40 is set on the side of the bottom shell 11, and the second connecting part 312 is placed on the battery management main control board 40 so that the second locking accessory 52 connects the second connecting part 312 and the battery management main control board 40 to the bottom shell 11.

[0096] For example, the middle shell 12 includes a horizontal part and a vertical part connected to the horizontal part. The horizontal part covers the top surface of the bottom shell 11 to cover and enclose each high-voltage relay 20. Then, there is spatial interference between the horizontal part and the third connection part 313 of the first low-voltage transmission member 31. The vertical part extends to the side of the bottom shell 11 to enclose the side of the bottom shell 11, thereby protecting the battery management main control board 40 located on the side of the bottom shell 11.

[0097] The third connecting part 313 is integrally injection molded with the middle shell 12, and is directly fixed to the middle shell 12, specifically, to the horizontal part of the middle shell 12. Therefore, when the middle shell 12 is placed on the high-voltage relay 20, the positioning requirements for assembly are met. Then, the first connecting part 311 of the first low-voltage transmission component 31 is connected to the low-voltage terminal 20a, and the second connecting part 312 is connected to the battery management main control board 40.

[0098] Thus, by fixing the third connecting part 313 to the middle shell 12, the assembly efficiency of the first low-pressure transmission is further improved, the material storage and transfer problem of the first low-pressure transmission component 31 is eliminated, and the assembly yield of the first low-pressure transmission component 31 is improved.

[0099] Please refer to Figure 8. In some embodiments, the middle shell 12 has an opening 121 for exposing the pre-connected structure 314, so that the pre-connected structure 314 can be disconnected through the opening 121.

[0100] Understandably, when the material of the pre-connection structure 314 is the same as that of the third connection part 313, and the two are made in one piece, then the pre-connection structure 314 needs to be disconnected. Therefore, an opening 121 can be made in the middle shell 12 at the position corresponding to the pre-connection structure 314. After the middle shell 12 is installed, the pre-connection structure 314 can be disconnected through the opening 121.

[0101] Thus, by providing an opening 121 on the middle shell 12 to expose the pre-connection structure 314, and by disconnecting the pre-connection structure 314 through the opening 121, the two third connection parts 313 are in a passable state.

[0102] In other embodiments, a first through hole may be formed on the middle shell 12, the position of which corresponds to the first connecting part 311 and the low-voltage terminal 20a, so that the first locking attachment 51 passes through the first through hole to achieve a locking connection between the first connecting part 311 and the low-voltage terminal 20a. Similarly, a second through hole may also be formed on the middle shell 12, the position of which corresponds to the second connecting part 312 and the battery management main control board 40, so that the second locking attachment 52 passes through the second through hole to achieve a locking connection between the second connecting part 312 and the battery management main control board 40.

[0103] Please refer to Figures 3 and 5. In some embodiments, the second low-voltage transmission component 32 includes a fourth connection portion 321 and a fifth connection portion 322 connected to the fourth connection portion 321. The fourth connection portion 321 is connected to the low-voltage terminal 20a of the remaining high-voltage relay 20, and the fifth connection portion 322 is connected to the low-voltage transfer area 40a of the battery management main control board 40.

[0104] Understandably, the fourth connecting part 321 and the fifth connecting part 322 are sequentially connected to form the second low-voltage transmission component 32. The fourth connecting part 321 is used to connect to the low-voltage terminal 20a of the high-voltage relay 20. The connection method between the fourth connecting part 321 and the low-voltage terminal 20a includes, but is not limited to, plug-in, snap-in, welding, and threaded connection. The fifth connecting part 322 is used to connect to the low-voltage transfer area 40a of the battery management main control board 40. The connection method between the fifth connecting part 322 and the low-voltage transfer area 40a includes, but is not limited to, plug-in, snap-in, welding, and threaded connection. Since the second low-voltage transmission component 32 includes only two connecting parts, its effective length can be relatively short, especially when the distance between the low-voltage terminal 20a of the high-voltage relay 20 and the low-voltage transfer area 40a of the battery management main control board 40 is close.

[0105] Please refer to Figures 3 and 9. In some embodiments, the electronic control device 100 includes a third locking attachment 53, and the fourth connection portion 321 is locked to the low-voltage terminal 20a via the third locking attachment 53.

[0106] Understandably, the structure of the third locking accessory 53 includes screws, pins, and rivets, and the fourth connecting part 321 is locked to the low-voltage terminal 20a through the third locking accessory 53.

[0107] For example, the third locking accessory 53 is a bolt, with a threaded hole on the low-voltage terminal 20a and a through hole on the fourth connecting part 321 for the bolt to pass through. The fourth connecting part 321 is placed on the low-voltage terminal 20a such that the through hole corresponds to the threaded hole. The bolt passes through the through hole and the threaded hole in sequence to connect the fourth connecting part 321 to the low-voltage terminal 20a. Here, the fourth connecting part 321 is both physically connected to the low-voltage terminal 20a and electrically connected to it.

[0108] Thus, the fourth connecting part 321 can be quickly connected to the low-voltage terminal 20a through the third locking attachment 53, making the assembly process simple and more efficient.

[0109] Please refer to Figures 3 and 5. In some embodiments, the fifth connection part 322 is plugged into and connected to the battery management main control board 40.

[0110] Understandably, the connection between the fifth connection part 322 and the battery management main control board 40 can be either a direct connection or an indirect connection. A direct connection means that the fifth connection part 322 is connected to the battery management main control board 40 without the aid of other structures; conversely, an indirect connection means that the fifth connection part 322 is connected to the battery management main control board 40 with the aid of other structures.

[0111] In this way, the second low-voltage transmission component 32 can be directly connected to the battery management main control board 40, simplifying the assembly process and improving assembly efficiency.

[0112] In other embodiments, the fifth connection portion 322 may also be connected to the battery management main control board 40 by a locking connection.

[0113] Please refer to Figures 3 to 9. In a specific embodiment, the electronic control device 100 provided in this application includes a base assembly 10, a battery management main control board 40, multiple high-voltage relays 20, a first low-voltage transmission component 31, a second low-voltage transmission component 32, a first lock accessory 51, a second lock accessory 52, and a third lock accessory 53. A battery management main control board 40 is disposed on the base assembly 10, and the battery management main control board 40 has a low-voltage transfer area 40a; each high-voltage relay 20 is disposed side by side on the base assembly 10, and each high-voltage relay 20 is provided with a low-voltage terminal 20a, and each low-voltage terminal 20a faces the battery management main control board 40; one end of a first low-voltage transmission member 31 is connected to the low-voltage terminal 20a of a portion of the high-voltage relays 20, and the other end is connected to the low-voltage transfer area 40a of the battery management main control board 40; one end of a second low-voltage transmission member 32 is connected to the low-voltage terminal 20a of the remaining high-voltage relays 20, and the other end is connected to the low-voltage transfer area 40a of the battery management main control board 40; wherein, the effective length of the first low-voltage transmission member 31 is greater than the effective length of the second low-voltage transmission member 32.

[0114] The first low-voltage transmission component 31 includes a first connecting part 311, a second connecting part 312, and a third connecting part 313 connected to the first connecting part 311 and the second connecting part 312. The first connecting part 311 is connected to the low-voltage terminal 20a of a portion of the high-voltage relay 20, and the second connecting part 312 is connected to the low-voltage transfer area 40a of the battery management main control board 40. There are two third connecting parts 313, which are arranged side by side, and a pre-connection structure 314 is provided between the two third connecting parts 313. The first connecting part 311 is locked to the low-voltage terminal 20a by a first locking attachment 51. The second connecting part 312 is locked to the battery management main control board 40 by a second locking attachment 52. The base assembly 10 includes a bottom shell 11, and the second locking attachment 52 is connected to the bottom shell 11. The bottom shell 11 has a boss structure 111. The battery management main control board 40 is located on the bottom shell 11 and covers the boss structure 111. The second locking accessory 52 is connected to the bottom shell 11 through the boss structure 111. The base assembly 10 includes a middle shell 12, and a third connecting part 313 is integrally injection molded with the middle shell 12. The middle shell 12 has an opening 121 for exposing the pre-connected structure 314, so that the pre-connected structure 314 can be disconnected through the opening 121.

[0115] The second low-voltage transmission component 32 includes a fourth connection portion 321 and a fifth connection portion 322 connected to the fourth connection portion 321. The fourth connection portion 321 is connected to the low-voltage terminal 20a of the remaining high-voltage relay 20, and the fifth connection portion 322 is connected to the low-voltage switching area 40a of the battery management main control board 40. The fourth connection portion 321 is locked to the low-voltage terminal 20a via a third locking attachment 53. The fifth connection portion 322 is plugged into the battery management main control board 40.

[0116] Referring to Figure 2, this application embodiment provides a battery device 1001, which includes one or more battery cell components 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 systems that use the battery device 1001 as an energy storage element. Electrical devices can be, but are not limited to, mobile phones, portable devices, laptops, electric toys, power tools, electric vehicles, vehicles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0117] In some embodiments, the battery cell assembly 200 is typically formed by arranging a plurality of battery cells.

[0118] 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.

[0119] 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.

[0120] As an example, the battery cell assembly 200 can be a battery module, which can be housed in the housing 300 by fixing the battery module in the housing 300.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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, characterized by, include: Base assembly; A battery management main control board is disposed on the base assembly, and the battery management main control board has a low-voltage conversion area; Multiple high-voltage relays are arranged side by side on the base assembly, and each high-voltage relay is provided with a low-voltage terminal, with each low-voltage terminal facing the battery management main control board. A first low-voltage transmission component, one end of which is connected to the low-voltage terminal of a portion of the high-voltage relay, and the other end of which is connected to the low-voltage switching area of ​​the battery management main control board; The second low-voltage transmission component has one end connected to the low-voltage terminal of the remaining high-voltage relay, and the other end connected to the low-voltage switching area of ​​the battery management main control board. Wherein, the effective length of the first low-voltage transmission component is greater than the effective length of the second low-voltage transmission component.

2. The electrically controlled device according to claim 1, wherein The first low-voltage transmission component includes a first connecting part, a second connecting part, and a third connecting part connected to the first connecting part and the second connecting part. The first connecting part is connected to the low-voltage terminal of a portion of the high-voltage relay, and the second connecting part is connected to the low-voltage switching area of ​​the battery management main control board.

3. The electrically controlled device of claim 2, wherein, There are two third connecting parts, which are arranged side by side, and a pre-connection structure is provided between the two third connecting parts.

4. The electrically controlled device of claim 2, wherein, The electrical control device includes a first locking accessory, and the first connecting part is locked to the low-voltage terminal through the first locking accessory.

5. The electrically controlled device of claim 2, wherein, The electronic control device includes a second locking accessory, and the second connecting part is locked to the battery management main control board through the second locking accessory.

6. The electrically controlled device according to claim 5, wherein The base assembly includes a bottom shell, and the second locking accessory is connected to the bottom shell.

7. The electrically controlled device according to claim 6, wherein The bottom shell is provided with a boss structure, the battery management main control board is located on the bottom shell and covers the boss structure, and the second lock accessory is connected to the bottom shell through the boss structure.

8. The electrically controlled device of claim 3, wherein, The base assembly includes a middle shell, and the third connecting part is integrally injection molded with the middle shell.

9. The electrically controlled device according to claim 8, wherein The middle shell has an opening for exposing the pre-connected structure, so that the pre-connected structure can be disconnected through the opening.

10. The electrically controlled device of claim 1, wherein, The second low-voltage transmission component includes a fourth connection portion and a fifth connection portion connected to the fourth connection portion. The fourth connection portion is connected to the low-voltage terminal of the remaining high-voltage relay, and the fifth connection portion is connected to the low-voltage switching area of ​​the battery management main control board.

11. The electrically controlled device according to claim 10, wherein The electrical control device includes a third locking accessory, and the fourth connection part is locked to the low-voltage terminal through the third locking accessory.

12. The electrically controlled device of claim 10, wherein, The fifth connection part is plugged into and connected to the battery management main control board.

13. A battery device characterized by comprising: It includes an electronic control device and a battery cell assembly as described in any one of claims 1 to 12, wherein the battery cell assembly is electrically connected to the electronic control device.

14. An electrical device, comprising: Includes the battery device as described in claim 13, the battery device being used to store or provide electrical energy.

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