Battery control device and electric equipment

Abstract

The utility model relates to the technical field of relays, in particular to a battery control device and electric equipment. The battery control device comprises a solid-state relay module; the battery management module is electrically connected with the solid-state relay module; the solid-state relay module and the battery management module are integrated on the control circuit board; the heat dissipation assembly is arranged on one side of the control circuit board and attached to the control circuit board; heat of the solid-state relay module and / or the battery management module is transmitted to the heat dissipation assembly through the control circuit board; the temperature sensor is arranged on the control circuit board, and the temperature sensor is electrically connected with the battery management module; the solid-state relay module connects or disconnects the load unit and the power supply unit, and the battery management module receives an external control signal and controls the solid-state relay module to execute connection and disconnection. By controlling the temperature, the high-voltage over-current capability of the battery control device can be improved while the use of the wire harness is reduced.

Description

Technical Field

[0001] This application relates to the field of relay technology, and more particularly to a battery control device and electrical equipment. Background Technology

[0002] When using battery packs, relays are typically required as circuit breakers for high-voltage transmission. Traditional relays usually utilize wiring harnesses to connect to the battery control system, battery pack, load, and other units. This consumes significant external space and introduces substantial wiring harness costs. Furthermore, wiring harness connections carry a high risk of failure, potentially affecting the reliability of connections between relays and other units. Using solid-state relays instead of traditional relays can reduce wiring harness usage; however, solid-state relays generate more heat and have poorer high-voltage overcurrent capability. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a battery control device and an electrical appliance.

[0004] In a first aspect, this application provides a battery control device, which includes:

[0005] Solid-state relay module;

[0006] A battery management module, which is electrically connected to the solid-state relay module;

[0007] A control circuit board, wherein the solid-state relay module and the battery management module are integrated on one side of the control circuit board;

[0008] A heat dissipation component is disposed on the side of the control circuit board facing away from the solid-state relay module and the battery management module, and the heat dissipation component is in contact with the control circuit board; the heat from the solid-state relay module and / or the battery management module is transferred to the heat dissipation component through the control circuit board;

[0009] A temperature sensor is disposed on the side of the control circuit board facing away from the heat dissipation assembly, and the temperature sensor is electrically connected to the battery management module;

[0010] The solid-state relay module is used to connect or disconnect the load unit and the power supply unit, and the battery management module is used to receive external control signals and control the solid-state relay module to perform on / off operations.

[0011] Optionally, the battery control device includes:

[0012] An input copper busbar is electrically connected to the input terminal of the solid-state relay module;

[0013] An output copper busbar is electrically connected to the output terminal of the solid-state relay module.

[0014] Optionally, the input copper busbar and the output copper busbar are located on the side of the control circuit board facing the heat dissipation component; the heat dissipation component is in contact with the input copper busbar and the output copper busbar.

[0015] Optionally, the heat dissipation component includes:

[0016] Liquid cooling plate;

[0017] An insulating thermally conductive pad is disposed on the side of the liquid cooling plate facing the control circuit board. The first side of the insulating thermally conductive pad is in contact with the control circuit board, and the second side of the insulating thermally conductive pad is in contact with the liquid cooling plate.

[0018] Optionally, the heat dissipation component includes a heat-conducting strip;

[0019] The heat-conducting strip is connected between the input copper busbar and the liquid cooling plate, and / or between the output copper busbar and the liquid cooling plate.

[0020] Optionally, the liquid cooling plate includes an inlet and an outlet; the inlet and the outlet are located on the side of the liquid cooling plate facing the control circuit board.

[0021] Optionally, the temperature sensor includes a thermistor.

[0022] Optionally, the battery management module includes a communication connector for receiving external control signals.

[0023] Optionally, the solid-state relay module includes a high-voltage detection unit;

[0024] The high-voltage detection unit is electrically connected to the input copper busbar, the output copper busbar, and the battery management module, respectively. The high-voltage detection unit is used to detect the continuity between the input copper busbar and the output copper busbar and to send a continuity signal to the battery management module.

[0025] Secondly, this application also provides an electrical device, which includes any of the battery control devices described above.

[0026] In some implementations of this application, the battery control device includes a solid-state relay module for connecting or disconnecting the connection between the load unit and the power supply unit, and a battery management module for receiving external control signals and controlling the solid-state relay module to perform on / off operations. The solid-state relay module and the battery management module are integrated on a control circuit board, which reduces the use of wiring harnesses, lowers costs, and reduces the risk of wiring harness failure.

[0027] Because solid-state relay modules generate a significant amount of heat, a temperature sensor is installed on the control circuit board; and the heat sink is in contact with the control circuit board for heat exchange. This allows technicians to control the temperature of the solid-state relay components, thereby reducing wiring harness usage while improving the high-voltage overcurrent capability of the battery control device.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is an isometric view of the battery control device described in this application;

[0031] Figure 2 yes Figure 1 Exploded view;

[0032] Reference numerals: 1. Solid-state relay module; 11. High-voltage detection unit; 2. Battery management module; 21. Communication connector; 3. Control circuit board; 4. Heat dissipation component; 41. Liquid cooling plate; 411. Water inlet; 412. Water outlet; 42. Insulating thermal pad; 43. Thermal strip; 5. Temperature sensor; 6. Input copper busbar; 7. Output copper busbar. Detailed Implementation

[0033] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0034] When a battery pack acts as a power supply unit to power large loads, the electricity transferred between the battery pack and the load is typically high-voltage. High-voltage electricity refers to voltages exceeding 220 volts and currents ranging from a few amperes to hundreds of amperes. To ensure safety, the connection between the battery pack and the load is usually established using relays. Relays can control large currents with small currents, facilitating automated and remote control of the electrical connection between the battery pack and the load.

[0035] Relays used between battery packs and loads are typically traditional electromagnetic relays. These relays have a basic structure including a coil, armature, contact switch, and spring. When the coil is energized, it generates a magnetic field, which drives the armature. The movement of the armature triggers the contact switch, thus opening or closing the electrical connection between the battery pack and the load. The spring returns the armature to its original position when the coil is de-energized.

[0036] Traditional relays require extensive wiring harnesses for connection, necessitating sufficient space between the battery pack and the load for cabling. This increases the overall footprint of the battery pack, load, and relay, while also raising the cost of the wiring harnesses. Furthermore, the connection between the wiring harness and electronic components is susceptible to failure due to environmental factors such as vibration, further increasing the risk of connection failure between the battery pack and the load.

[0037] A solid-state relay is an electronic switching device without mechanical contacts, which uses semiconductor components to connect and disconnect circuits. The electronic components in a solid-state relay are integrated on a single circuit board, reducing or even eliminating the need for wiring harnesses compared to traditional relays. However, solid-state relays are prone to overheating and have poor current-carrying capacity, making them more difficult to use between battery packs and loads.

[0038] Therefore, this application provides a battery control device and an electrical appliance to overcome many problems existing in the prior art. (See reference...) Figure 1 , Figure 2 The battery control device described in this application includes a solid-state relay module 1, a battery management module 2, and a control circuit board 3. The solid-state relay module 1 comprises the electronic components and interconnecting circuitry within the solid-state relay, while the battery management module 2 comprises the electronic components and interconnecting circuitry within the existing battery pack's BMS (Battery Management System). The battery management module 2 and the solid-state relay module 1 are integrated onto the same control circuit board 3, and the solid-state relay module 1 and the battery management module 2 are electrically connected to each other.

[0039] For reference Figure 1 , Figure 2The battery control device also includes a heat dissipation assembly 4 and a temperature sensor 5. The temperature sensor 5 is mounted on the control circuit board 3 and electrically connected to the battery management module 2. The temperature sensor 5 can collect the temperature on the control circuit board 3 and feed the temperature data back to the battery management module 2. The heat dissipation assembly 4 is located on one side of the control circuit board 3 and is in contact with it. Heat from the solid-state relay module 1 and / or the battery management module 2 is transferred to the heat dissipation assembly 4 through the control circuit board 3. In this embodiment, the temperature sensor 5, the solid-state relay module 1, and the battery management module 2 are all located on the same side of the control circuit board 3; the heat dissipation assembly 4 is located on the other side of the control circuit board 3, i.e., the side facing away from the temperature sensor 5, the solid-state relay module 1, and the battery management module 2, and is in contact with the control circuit board 3. The battery management module 2 can control the heat dissipation assembly 4 to exchange heat with the control circuit board 3 and remove the heat dissipated by the solid-state relay module 1 and the battery management module 2 during operation.

[0040] In use, the input terminal of solid-state relay module 1 is electrically connected to the load unit, and the output terminal is electrically connected to the power supply unit to control the on / off connection between the load unit and the power supply unit. The power supply unit is an electronic device that provides electrical energy, which can be an energy storage device such as a battery pack. The load unit is an electronic device that consumes electrical energy and performs related actions, which can be a power device such as a motor. Battery management module 2 can receive external control signals and control solid-state relay module 1 to connect or disconnect the electrical connection between the load unit and the power supply unit according to the external control signals.

[0041] In this application, a solid-state relay module 1 is mounted on the control circuit board 3, and a battery management module 2, which is electrically connected to the solid-state relay module 1, is also integrated on the control circuit board 3. This avoids the need to use cables to connect the solid-state relay and the battery management module 2, thus saving wiring space and reducing wiring harness costs. At the same time, this also reduces the risk of wiring harness failure.

[0042] The temperature sensor 5 allows the battery management module 2 to monitor the temperature data on the control circuit board 3 in a timely manner. This enables the battery management module 2 to control the heat dissipation component 4 to cool the solid-state relay module 1 and the battery management module 2 on the control circuit board 3 as needed. This effectively removes the heat generated by the solid-state relay module 1 during operation and improves its overcurrent capacity, ensuring that the solid-state relay module 1 can fully meet the connection requirements between the battery pack and large loads.

[0043] For reference Figure 1 , Figure 2In some embodiments of this application, the battery control device further includes an input copper busbar 6 and an output copper busbar 7. The input copper busbar 6 is electrically connected to the input terminal of the solid-state relay module 1, and the output copper busbar 7 is electrically connected to the output terminal of the solid-state relay module 1. During use, the power supply unit is electrically connected to the input copper busbar 6, and the load unit is electrically connected to the output copper busbar 7. Generally, two input copper busbars 6 and two output copper busbars 7 are provided, with one input copper busbar 6 used as a positive input and the other as a positive output; one output copper busbar 7 is used as a positive input, and the other as a positive output. The input copper busbar 6 and the output copper busbar 7 can both be soldered to corresponding positions on the control circuit board 3 to ensure the connection strength between the solid-state relay module 1 and the input copper busbar 6 and the output copper busbar 7. The copper busbar has good conductivity and heat dissipation performance, and strong current carrying capacity. The copper busbar also has good mechanical strength and is not easily damaged by mechanical stress or environmental vibration. Therefore, by connecting the input copper busbar 6 to the input terminal of the solid-state relay module 1 and the output copper busbar 7 to the output terminal of the solid-state relay module 1, it is possible to ensure that the connection points between the battery control device and the power supply unit and load unit have good overcurrent and heat dissipation capabilities. At the same time, it also reduces the risk of connection failure at the connection points between the battery control device and the power supply unit and load unit.

[0044] For reference Figure 1 , Figure 2 In some embodiments of this application, the input copper busbar 6 and the output copper busbar 7 are both located on the side of the control circuit board 3 facing the heat dissipation assembly 4. The heat dissipation assembly 4 is in contact with the input copper busbar 6 and the output copper busbar 7, so that the heat dissipation assembly 4 can also dissipate heat from the input copper busbar 6 and the output copper busbar 7, thereby reducing the heat generation at the connection points between the battery control device and the power supply unit and the load unit, and improving the overcurrent capacity between the battery control device and the power supply unit, and between the battery control device and the load unit.

[0045] In some embodiments of this application, the heat dissipation assembly 4 specifically includes a liquid cooling plate 41 and an insulating thermally conductive pad 42. The liquid cooling plate 41 contains coolant, and the insulating thermally conductive pad 42 is disposed on the side of the liquid cooling plate 41 facing the control circuit board 3 to achieve insulation protection between the liquid cooling plate 41 and the control circuit board 3. The first side of the insulating thermally conductive pad 42 is in contact with the control circuit board 3, and the second side of the insulating thermally conductive pad 42 is in contact with the liquid cooling plate 41. The insulating thermally conductive pad 42 and the control circuit board 3, as well as the insulating thermally conductive pad 42 and the liquid cooling plate 41, can be bonded and fixed using thermally conductive adhesive. The liquid cooling plate 41 has strong heat dissipation capacity, which can further improve the heat exchange capacity and efficiency between the heat dissipation assembly 4 and the control circuit board 3, thereby improving the heat dissipation efficiency and overcurrent capacity of the solid-state relay module 1 on the control circuit board 3.

[0046] For reference Figure 2In some embodiments of this application, the heat dissipation assembly 4 includes a heat-conducting strip 43. The heat-conducting strip 43 can be connected between the input copper busbar 6 and the liquid cooling plate 41, so that the heat dissipated by the input copper busbar 6 during operation can be carried away by the heat dissipation assembly 4 via the heat-conducting strip 43. The heat-conducting strip 43 can also be connected between the output copper busbar 7 and the liquid cooling plate 41, so that the heat dissipated by the output copper busbar 7 during operation can be carried away by the heat dissipation assembly 4 via the heat-conducting strip 43. Multiple heat-conducting strips 43 can also be provided, respectively connected between the input copper busbar 6 and the liquid cooling plate 41 and between the output copper busbar 7 and the liquid cooling plate 41. By dissipating heat from the input copper busbar 6 and the output copper busbar 7 through the heat dissipation assembly 4 and the heat-conducting strip 43, it is beneficial to further reduce the heat generation at the connection points between the battery control device and the power supply unit and the load unit, and to further improve the overcurrent capacity between the battery control device and the power supply unit, and between the battery control device and the load unit.

[0047] For reference Figure 2 In some embodiments of this application, the liquid cooling plate 41 includes an inlet 411 and an outlet 412. Both the inlet 411 and the outlet 412 are located on the side of the liquid cooling plate 41 facing the control circuit board 3; that is, the inlet 411, outlet 412, and control circuit board 3 are arranged on the same side of the liquid cooling plate 41. Compared to an arrangement where the inlet 411 and outlet 412 are located on the side of the liquid cooling plate 41 facing away from the control circuit board 3, this arrangement allows for a more regular shape of the battery control device and a more rational allocation of space on the battery control device.

[0048] In some embodiments of this application, the temperature sensor 5 specifically includes a thermistor. A thermistor is an electronic component whose resistance changes significantly with temperature and is widely used in temperature measurement, control, and compensation. In this application, the thermistor is mounted on the control circuit board 3 and electrically connected to the battery control module. When the temperature of the environment in which the thermistor is located changes, the resistance of the thermistor also changes. The battery control module can determine the temperature of the environment in which the thermistor is located, i.e., the actual temperature on the control circuit board 3, by detecting the change in the thermistor's resistance. The thermistor's resistance reacts rapidly to temperature changes, providing timely feedback on the real-time temperature on the control circuit board 3, which is beneficial for the battery control module to make timely judgments and responses. Furthermore, the thermistor is small in size, easy to manufacture, and convenient to use, reducing the space occupied by the battery control device while lowering its hardware cost. Of course, other temperature sensors 5, such as infrared temperature sensors 5, can also be used in this application.

[0049] For reference Figure 1 , Figure 2In some embodiments of this application, the battery management module 2 includes a communication connector 21. The communication connector 21 is used to receive external control signals. Specifically, the external control signal is a low-voltage signal. The communication connector 21 in the battery management module 2 can be connected to an external controller via a compatible connector. When the external controller sends an external control signal, the signal can be transmitted to the battery management module 2 via the communication connector 21, so that the battery management module 2 can control the solid-state relay module 1 to open or close the circuit as needed. Using the communication connector 21 as the receiving structure for the battery management module 2 to receive external control signals avoids the need for wiring harnesses to connect the battery management module 2 and the external controller. This further reduces the wiring space requirements of the battery control device and lowers wiring harness costs and failure risks.

[0050] For reference Figure 1 , Figure 2 In some embodiments of this application, the solid-state relay module 1 includes a high-voltage detection unit 11. The high-voltage detection unit 11 is electrically connected to the input copper busbar 6, the output copper busbar 7, and the battery management module 2, respectively. When the input copper busbar 6 is electrically connected to the output copper busbar 7, the high-voltage detection unit 11 can send a first signal to the battery management module 2. Upon receiving the first signal, the battery management module 2 determines that the solid-state relay module 1 is in a closed-loop state. At this time, the battery management module 2 can activate the temperature sensor 5 to detect the temperature on the control circuit board 3 and control the heat dissipation component 4 to cool the control circuit board 3 and the solid-state relay module 1 and battery management module 2 on the control circuit board 3.

[0051] When the input copper busbar 6 is electrically disconnected from the input copper busbar 6, the high-voltage detection unit 11 can send a second signal to the battery management module 2. Upon receiving the second signal, the battery management module 2 determines that the solid-state relay module 1 is in a closed-loop state. At this time, the high-voltage detection unit 11 monitors the voltage change between the input copper busbar 6 and the input copper busbar 6 in real time, and the power-down task is completed. The first and second signals are the aforementioned on / off signals. The high-voltage monitoring unit can help the battery management module 2 to grasp the closed and open state of the circuit in the solid-state relay module 1 in real time, thus enabling the battery management module 2 to make real-time control based on the state of the circuit in the solid-state relay module 1, thereby improving the timeliness and accuracy of the battery control device.

[0052] Secondly, this application also provides an electrical device, which includes any of the battery control devices described above, and further includes a power supply unit and a load unit. The electrical device described in this application can be a new energy vehicle or other large equipment that requires power from a battery pack. The battery control device can control the on / off connection between the power supply unit and the load unit in the electrical device. For example, when the electrical device is a new energy vehicle, the power supply unit is the battery pack of the new energy vehicle, and the load unit is the motor of the new energy vehicle; the battery control device can control the on / off connection between the battery pack and the motor.

[0053] The electrical equipment described in this application overcomes many problems existing in the prior art. (See also...) Figure 1 The battery control device described in this application includes a solid-state relay module 1, a battery management module 2, and a control circuit board 3. The battery management module 2 and the solid-state relay module 1 are integrated on the same control circuit board 3, and the solid-state relay module 1 and the battery management module 2 are electrically connected to each other. The battery control device also includes a heat dissipation component 4 and a temperature sensor 5. The temperature sensor 5 is disposed on the control circuit board 3 and electrically connected to the battery management module 2. The temperature sensor 5 can collect the temperature on the control circuit board 3 and feed the temperature data back to the battery management module 2. The heat dissipation component 4 is disposed on one side of the control circuit board 3 and is in contact with the control circuit board 3. The battery management module 2 can control the heat dissipation component 4 to exchange heat with the control circuit board 3, and remove the heat dissipated by the solid-state relay module 1 and the battery management module 2 during operation.

[0054] In use, the input terminal of solid-state relay module 1 is electrically connected to the load unit, and the output terminal is electrically connected to the power supply unit to control the on / off connection between the load unit and the power supply unit. Battery management module 2 can receive external control signals and control solid-state relay module 1 to connect or disconnect the electrical connection between the load unit and the power supply unit according to the external control signals. Since solid-state relay module 1 is mounted on control circuit board 3, and battery management module 2, which is electrically connected to solid-state relay module 1, is also integrated on control circuit board 3, this avoids the need for cables to connect solid-state relay and battery management module 2, thus saving wiring space and reducing wiring harness costs. It also reduces the risk of wiring harness failure. The temperature sensor 5 allows battery management module 2 to promptly monitor the temperature data on control circuit board 3, enabling battery management module 2 to control heat dissipation component 4 to cool solid-state relay module 1 and battery management module 2 on control circuit board 3 as needed. This effectively removes heat generated by solid-state relay module 1 during operation and improves its overcurrent capacity, allowing solid-state relay module 1 to fully meet the connection requirements between the battery pack and large loads.

[0055] For reference Figure 1 , Figure 2 The battery control device also includes an input copper busbar 6 and an output copper busbar 7. The input copper busbar 6 is electrically connected to the input terminal of the solid-state relay module 1, and the output copper busbar 7 is electrically connected to the output terminal of the solid-state relay module 1. During use, the power supply unit is electrically connected to the input copper busbar 6, and the load unit is electrically connected to the output copper busbar 7. Both the input copper busbar 6 and the output copper busbar 7 are located on the side of the control circuit board 3 facing the heat dissipation assembly 4. The heat dissipation assembly 4 is in contact with the input copper busbar 6 and the output copper busbar 7, so that the heat dissipation assembly 4 can also dissipate heat from the input copper busbar 6 and the output copper busbar 7, thereby reducing heat generation at the connection points between the battery control device and the power supply unit and the load unit, and improving the overcurrent capacity between the battery control device and the power supply unit, and between the battery control device and the load unit.

[0056] For reference Figure 1 , Figure 2 The heat dissipation assembly 4 specifically includes a liquid cooling plate 41 and an insulating thermally conductive pad 42. The insulating thermally conductive pad 42 is disposed on the side of the liquid cooling plate 41 facing the control circuit board 3 to provide insulation between the liquid cooling plate 41 and the control circuit board 3. The first side of the insulating thermally conductive pad 42 is in contact with the control circuit board 3, and the second side of the insulating thermally conductive pad 42 is in contact with the liquid cooling plate 41. The inlet 411 and outlet 412 of the liquid cooling plate 41 are both disposed on the side of the liquid cooling plate 41 facing the control circuit board 3; that is, the inlet 411 and outlet 412 are located on the same side of the liquid cooling plate 41 as the control circuit board 3. The insulating thermally conductive pad 42 and the control circuit board 3, as well as the insulating thermally conductive pad 42 and the liquid cooling plate 41, can be bonded and fixed together using thermally conductive adhesive. The heat dissipation assembly 4 also includes a thermally conductive strip 43. The thermally conductive strip 43 can be connected between the input copper busbar 6 and the liquid cooling plate 41 so that the heat dissipated by the input copper busbar 6 during operation can be carried away by the heat dissipation assembly 4 via the thermally conductive strip 43. The heat-conducting strip 43 can also be connected between the output copper busbar 7 and the liquid cooling plate 41, so that the heat dissipated by the output copper busbar 7 during operation can be carried away by the heat dissipation assembly 4 through the heat-conducting strip 43. Multiple heat-conducting strips 43 can also be provided, and connected between the input copper busbar 6 and the liquid cooling plate 41 and between the output copper busbar 7 and the liquid cooling plate 41, respectively.

[0057] The temperature sensor 5 specifically includes a thermistor. In this embodiment, the thermistor is mounted on the control circuit board 3 and electrically connected to the battery control module. When the temperature of the environment in which the thermistor is located changes, the resistance of the thermistor also changes. The battery control module can determine the temperature of the environment in which the thermistor is located, i.e., the actual temperature on the control circuit board 3, by detecting the change in the resistance of the thermistor.

[0058] For reference Figure 1 , Figure 2The battery management module 2 includes a communication connector 21. The communication connector 21 is used to receive external control signals. Specifically, the external control signal is a low-voltage signal. The communication connector 21 in the battery management module 2 can be connected to an external controller via a compatible connector. When the external controller sends an external control signal, the signal can be transmitted to the battery management module 2 via the communication connector 21, so that the battery management module 2 can control the solid-state relay module 1 to open or close the circuit as needed.

[0059] For reference Figure 1 , Figure 2 The solid-state relay module 1 includes a high-voltage detection unit 11. The high-voltage detection unit 11 is electrically connected to the input copper busbar 6, the output copper busbar 7, and the battery management module 2. When the input copper busbar 6 is electrically connected to the output copper busbar 7, the high-voltage detection unit 11 sends a first signal to the battery management module 2. Upon receiving the first signal, the battery management module 2 determines that the solid-state relay module 1 is in a closed-loop state. At this time, the battery management module 2 can activate the temperature sensor 5 to detect the temperature on the control circuit board 3 and control the heat dissipation component 4 to cool the control circuit board 3 and the solid-state relay module 1 and battery management module 2 on it.

[0060] When the input copper busbar 6 is electrically disconnected from the input copper busbar 6, the high-voltage detection unit 11 can send a second signal to the battery management module 2. Upon receiving the second signal, the battery management module 2 determines that the solid-state relay module 1 is in a closed-loop state. At this time, the high-voltage detection unit 11 monitors the voltage change between the input copper busbar 6 and the input copper busbar 6 in real time, and the power-down task is completed. The first and second signals are the aforementioned on / off signals.

[0061] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0062] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or at least two of the features. In the description of this utility model, unless otherwise stated, "at least two" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0063] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "left", "right", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0064] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or at least two embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A battery control device characterized by comprising: The battery control device comprises: a solid-state relay module (1); a battery management module (2) electrically connected with the solid-state relay module (1); a control circuit board (3), the solid-state relay module (1) and the battery management module (2) are integrated on one side of the control circuit board (3); a heat dissipation assembly (4) arranged on the side of the control circuit board (3) away from the solid-state relay module (1) and the battery management module (2), the heat dissipation assembly (4) is attached to the control circuit board (3); a temperature sensor (5) arranged on the side of the control circuit board (3) away from the heat dissipation assembly (4), the temperature sensor (5) is electrically connected with the battery management module (2); the solid-state relay module (1) is used for turning on or off the connection between a load unit and a power supply unit, and the battery management module (2) is used for receiving an external control signal and controlling the solid-state relay module (1) to perform on-off.

2. The battery control device according to claim 1, characterized by The battery control device comprises: an input copper bar (6) electrically connected with the input end of the solid-state relay module (1); an output copper bar (7) electrically connected with the output end of the solid-state relay module (1).

3. The battery control device according to claim 2, characterized by The input copper bar (6) and the output copper bar (7) are located on the side of the control circuit board (3) facing the heat dissipation assembly (4); the heat dissipation assembly (4) is attached to the input copper bar (6) and the output copper bar (7).

4. The battery control device according to claim 2, characterized by The heat dissipation assembly (4) comprises: a liquid cooling plate (41); an insulating heat-conducting pad (42) arranged on the side of the liquid cooling plate (41) facing the control circuit board (3), the first surface of the insulating heat-conducting pad (42) is in contact with the control circuit board (3), and the second surface of the insulating heat-conducting pad (42) is in contact with the liquid cooling plate (41).

5. The battery control device according to claim 4, characterized by The heat dissipation assembly (4) comprises a heat-conducting strip (43); the heat-conducting strip (43) is connected between the input copper bar (6) and the liquid cooling plate (41), and / or connected between the output copper bar (7) and the liquid cooling plate (41).

6. The battery control device according to claim 4, wherein The liquid cooling plate (41) comprises an inlet (411) and an outlet (412); the inlet (411) and the outlet (412) are arranged on the side of the liquid cooling plate (41) facing the control circuit board (3).

7. The battery control device according to any one of claims 1 to 3, characterized by The temperature sensor (5) comprises a thermistor.

8. The battery control device according to any one of claims 1 to 3, characterized by The battery management module (2) comprises a communication connector (21) for receiving an external control signal.

9. The battery control device according to claim 2, wherein The solid-state relay module (1) comprises a high-voltage detection unit (11); the high-voltage detection unit (11) is electrically connected with the input copper bar (6), the output copper bar (7) and the battery management module (2) respectively, and is used for detecting the on-off between the input copper bar (6) and the output copper bar (7) and sending an on-off signal to the battery management module (2).

10. An electric device, characterized by The power-using device comprises the battery control device according to any one of claims 1-9.

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