Thermal management unit and thermal management system

Abstract

The utility model relates to a thermal management unit, the thermal management unit comprises a liquid cooling unit and an electric control box, the liquid cooling unit comprises a power element and a data acquisition module, the electric control box comprises a box body and a control assembly, the box body comprises a back plate and a side plate, the side plate is adjacent to the back plate, the control assembly is located on the back plate, and the power element is connected with the power element. The side plate is provided with a first communication port and a second communication port, the data acquisition module is connected with the first communication port, the control assembly comprises a controller and a frequency converter, the frequency converter is connected with the second communication port, the controller is connected with the first communication port and the second communication port, and the backboard is provided with an interface module. The interface module is connected with the power element, and the frequency converter is connected with the interface module. The controller and the frequency converter are integrated in the electric control box, so that the working efficiency of the liquid cooling unit can be improved, the cost is saved, and more convenient system control and management are provided.

Description

Technical Field

[0001] The present disclosure relates to the field of thermal management technology, and in particular to a thermal management unit and a thermal management system. Background Art

[0002] With the development of science and technology, the integration of electronic equipment is getting higher and higher, and the power consumption is also increasing, which puts higher requirements on the thermal management of equipment. Liquid cooling unit is an effective thermal management device. Its main function is to take away the heat generated by the equipment through the circulation of liquid, so as to ensure the normal operation of the equipment.

[0003] The liquid cooling unit includes power components such as a compressor, a fan and a water pump. The power components are usually equipped with internal drivers and controllers, which leads to high system complexity, high cost, low reliability and efficiency. Therefore, it is urgent to provide a solution that can reduce the complexity and cost of the liquid cooling unit, improve its efficiency and reliability, and achieve the effect of reducing costs and increasing efficiency. Utility Model Content

[0004] In order to solve the above-mentioned technical problems of high cost and low efficiency of current liquid cooling units, the utility model proposes a thermal management unit.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A thermal management unit, comprising:

[0007] A liquid cooling unit, the liquid cooling unit comprising a power element and a data acquisition module;

[0008] An electric control box, the electric control box comprising a box body and a control assembly, the box body comprising a back plate and a side plate, the side plate is arranged adjacent to the back plate, and the control assembly is located on the back plate;

[0009] The side panel is provided with a first communication port and a second communication port, the data acquisition module is connected to the first communication port, the control component includes a controller and a frequency converter, the frequency converter is connected to the second communication port, and the controller is connected to the first communication port and the second communication port to control the frequency converter;

[0010] The backplane is provided with an interface module, the interface module is connected to the power element, and the frequency converter is connected to the interface module.

[0011] In a further embodiment, the power element includes a compressor, a fan and a water pump, the inverter includes a compressor inverter, a fan inverter and a water pump inverter, the interface module includes a compressor interface, a fan interface and a water pump interface, the compressor inverter is connected to the compressor via the compressor interface, the fan inverter is connected to the fan via the fan interface, and the water pump inverter is connected to the water pump via the water pump interface.

[0012] In a further embodiment, the liquid cooling unit also includes a coolant pipeline, which is used to transport coolant. A three-way ball valve and a heating belt are provided in the coolant pipeline. The three-way ball valve is used to switch the flow direction of the coolant, and the heating belt is used to provide heat to the coolant pipeline.

[0013] In a further embodiment, the data acquisition module includes a temperature sensor, a pressure sensor and a flow meter, the temperature sensor and the pressure sensor are installed on the coolant pipeline, and the flow meter is installed at the outlet or inlet of the water pump.

[0014] In a further embodiment, the electric control box further comprises a shielding cover, and the shielding cover is used to shield the controller to block external signals from interfering with the controller.

[0015] In a further embodiment, a filter board, a high-voltage auxiliary source and a relay board are also provided in the electrical control box, the filter board is connected to the output end of the inverter, the high-voltage auxiliary source is connected to the input end of the inverter, and the relay board is connected to the second communication port.

[0016] In a further embodiment, the box body also includes a box door, the box door and the back panel are arranged opposite to each other, the box door is provided with a display screen, and the display screen is connected to the controller for displaying the information of the data acquisition module in real time and for controlling the operation of the liquid cooling unit.

[0017] In a further embodiment, the box body further comprises a hinge, wherein the hinge is located on a side of the box body opposite to the side panel and is used to connect the door and the box body, and the interface module is located adjacent to the hinge.

[0018] In a further embodiment, the backplane includes a heat dissipation module, the heat dissipation module includes heat dissipation fins and fans that are evenly distributed at equal distances, the heat dissipation fins form a heat dissipation air duct, and the fan is located at either end of the heat dissipation air duct.

[0019] The utility model also provides a thermal management system, which comprises the thermal management unit mentioned above.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0021] The implementation of this disclosure has the following beneficial effects:

[0022] The utility model installs the control component in the electric control box, and the control component can simultaneously control power components such as compressors, fans and water pumps and other components that need to be controlled, thereby saving additional installation space and related wiring costs. The control component includes a controller and a frequency converter. The frequency converter changes the power frequency according to the control instructions issued by the controller, thereby realizing the control of the power components. The controller and the frequency converter exchange data through the internal communication port of the electric control box, which has a shorter signal transmission distance and fewer interference sources, and helps to improve the reliability and response speed of communication. Therefore, the implementation of the utility model can not only improve the system integration and communication reliability of the liquid cooling unit, but also help to simplify the maintenance process, improve the control accuracy, and reduce the overall cost of the system.

[0023] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions and advantages in the embodiments of this specification or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A working principle diagram according to an embodiment of the present disclosure is shown;

[0026] Figure 2 A schematic diagram showing the inner structure of the back plate of the electric control box according to an embodiment of the present disclosure is shown;

[0027] Figure 3 A schematic diagram showing the outer structure of the back plate of the electric control box according to an embodiment of the present disclosure is shown;

[0028] Among them: 1. Back panel; 11. Controller; 120. Compressor A inverter; 121. Compressor B inverter; 122. Fan A inverter; 123. Fan B inverter; 124. Water pump inverter; 125. Make-up water pump inverter; 13. Interface module; 14. Filter board; 15. Relay board; 16. Hinge; 2. Side panel; 21. First communication port; 22. Second communication port; 23. External power port; 3. Cooling module. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0031] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0032] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0033] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0034] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0035] Figure 1 A working principle diagram of a thermal management unit according to an embodiment of the present disclosure is shown as follows: Figure 1 , the above-mentioned thermal management unit comprises:

[0036] Liquid cooling unit, the liquid cooling unit includes a power element and a data acquisition module. The power element is the core driving force of the refrigeration cycle system, responsible for driving the refrigerant to flow in the system, and providing the necessary compression and cooling functions to achieve efficient heat transfer and control. The power element includes a compressor, a fan, a water pump, etc. The data acquisition module includes a temperature sensor, a pressure sensor, a flow meter, etc., which are used to collect and process various data during the operation of the liquid cooling unit. In some embodiments, the data acquisition module may also include a data recorder and an alarm. The data recorder is used to record the operating data of the liquid cooling unit, such as temperature, pressure, flow, etc., for analysis and optimization. The alarm is used to sound an alarm when an abnormal situation is detected, reminding the operator to deal with it in time.

[0037] An electric control box comprises a box body and a control assembly. The box body comprises a back plate 1 and a side plate 2. The side plate 2 is arranged adjacent to the back plate 1.

[0038] Figure 2 The schematic diagram of the inner structure of the back plate of the electric control box according to the embodiment of the present disclosure is shown as follows: Figure 2 As shown, the control component is located on the back panel 1. The control component is usually installed on the inner side of the back panel 1. The control component can be fixed in the electric control box with screws by reserving fixing holes on the back panel 1. The back panel 1 can also be equipped with a guide rail, and the control component can be installed on the bracket or base on the guide rail to facilitate installation and disassembly. The control component can also be fixed in the electric control box using a special mounting base according to the design of the electric control box and the size requirements of the control component. The specific installation method selected can be determined according to the specific conditions of the equipment and the electric control box, and the embodiments of the present disclosure do not limit this.

[0039] The side panel 2 is provided with a first communication port 21, a second communication port 22 and an external power port 23. The first communication port 21 is the external communication port of the electric control box, and the first communication port 21 is used to realize data exchange and communication between the electric control box and other devices or systems. The second communication port 22 is the internal communication port of the electric control box, and the second communication port 22 is used to realize information exchange and control command transmission between various components inside the electric control box. Common interface types in the first communication port 21 and the second communication port 22 include common interface types such as RJ45 interface, RS232 interface, RS485 interface, USB interface, etc., and appropriate communication cables can be selected according to the communication method adopted in the specific embodiment to connect the corresponding interfaces. In order to reduce electromagnetic interference, shielded twisted pair cables can be used for connection. In some embodiments, the data acquisition module and the first communication port 21 can also be connected by wireless connection, bridge connection and middleware connection.

[0040] In the embodiment of the present disclosure, the data acquisition module is connected to the first communication port 21, the control component includes a controller 11 and a frequency converter 120, the frequency converter 120 is connected to the second communication port 22, and the controller 11 is connected to the first communication port 21 and the second communication port 22 to control the frequency converter 120;

[0041] The controller 11 communicates with the data acquisition module by connecting to the first communication port 21, and communicates with the inverter 120 by connecting to the second communication port 22. Specifically, the controller 11 receives data from the data acquisition module, performs data analysis and processing on the data, and then issues a control instruction to the inverter 120. For example, the controller 11 can obtain data from the water inlet and outlet temperature sensors, the air intake and exhaust sensors, and the high-pressure and low-pressure sensors in the data acquisition module in real time. When it is detected that all sensors meet the start-up conditions of the liquid cooling unit, the controller 11 can issue a control instruction to the inverter through RS485 communication or CAN communication. The inverter can adjust to the corresponding frequency conversion frequency according to the control instruction. Common inverters include vector control inverters, closed-loop control inverters, open-loop control inverters, PID control inverters, and servo inverters.

[0042] The back panel 1 is provided with an interface module 13, the interface module 13 is connected to the power element, and the frequency converter is connected to the interface module 13. Specifically, the power element includes a corresponding motor, the power element is driven by the motor, the frequency converter is connected to the motor through the interface module 13, and the frequency converter adjusts the speed of the motor by changing the frequency of the power supply, thereby realizing the control of the power element.

[0043] The disclosed embodiment saves additional installation space and related wiring costs by installing the control component in the electric control box. The control component includes a controller 11 and a frequency converter. The frequency converter changes the power frequency according to the control instruction issued by the controller 11, thereby realizing the control of the power element. The controller 11 and the frequency converter exchange data through the internal communication port of the electric control box, which has a shorter signal transmission distance and fewer interference sources, and helps to improve the reliability and response speed of communication. Therefore, the implementation of the disclosed embodiment can not only improve the system integration and communication reliability, but also help to simplify the maintenance process, improve the control accuracy, and reduce the overall cost of the system.

[0044] The power element includes a compressor, a fan and a water pump. Specifically, the compressor is responsible for compressing the refrigerant to high pressure, so that it becomes a high-temperature and high-pressure gas. The compressor can be of the following types: a centrifugal compressor, a screw compressor, a scroll compressor and a reciprocating compressor. The fan is responsible for delivering cooling air to the condenser for cooling. The fan can be selected from a variety of types such as a centrifugal fan, an axial flow fan, and a mixed flow fan. The water pump is responsible for delivering cooling water to the condenser for cooling. Common types include centrifugal water pumps, centrifugal booster pumps, centrifugal circulation pumps, etc. The inverter includes a compressor inverter, a fan inverter and a water pump inverter. The interface module 13 includes a compressor interface, a fan interface and a water pump interface, etc. The compressor inverter is connected to the compressor through the compressor interface, the fan inverter is connected to the fan through the fan interface, and the water pump inverter is connected to the water pump through the water pump interface. It is understandable that each power element in the disclosed embodiment is equipped with a corresponding frequency converter to achieve independent control and regulation, so that the liquid cooling unit can better adapt to the changes in demand in different scenarios, improve operating efficiency and energy-saving performance, and each power element can be accurately controlled according to specific operating requirements. It should be noted that there is no strict limit on the number of the compressor, the fan and the water pump, which can be determined according to actual needs and designs. In addition, when designing the interface module 13, more interfaces can be designed according to specific application requirements. For example: PTC interface, main power interface, other types of sensor interfaces, communication interface, etc.

[0045] For example, the power element in the embodiment of the present disclosure includes a compressor A, a compressor B, a fan A, a fan B, a water pump and a water supply pump, such as Figure 2As shown, the inverter includes a compressor A inverter 120, a compressor B inverter 121, a fan A inverter 122, a fan B inverter 123, a water pump inverter 123 and a make-up water pump inverter 125. When arranging the above-mentioned inverters in the electric control box, factors such as space layout, heat dissipation, power supply and interface, and safety need to be considered to ensure that the inverters can work stably in the electric control box and achieve the expected performance. The interface module 13 includes a compressor A interface, a compressor B interface, a fan A interface, a fan B interface, a water pump interface and a make-up water pump interface. The power element and the inverter are connected through corresponding interfaces respectively. In addition, two PTCs (positive temperature coefficient thermistors) are also provided in the liquid cooling unit of the embodiment of the present disclosure for overload protection and temperature control. Accordingly, the interface module 13 includes a PTC1 interface and a PTC2 interface. The PTC is controlled by the controller 11. Through the PTC, precise temperature control and overload protection can be achieved, thereby ensuring the safe and efficient operation of the liquid cooling unit.

[0046] The liquid cooling unit also includes a coolant pipeline, which is used to transport coolant and is responsible for transferring heat from the heat source to the radiator, and then dissipating the heat to the outside. The coolant pipeline is usually made of materials with good thermal conductivity, such as copper or aluminum, which can effectively conduct heat. A three-way ball valve and a heating belt are arranged in the coolant pipeline. The three-way ball valve is used to switch the flow direction of the coolant. By adjusting the switch state of the three-way valve, the coolant can be guided to a specific device or refluxed into the system to achieve heat management of different devices. The liquid cooling unit can be flexibly adjusted and optimized according to different workloads and equipment requirements, improve the overall efficiency of the system, and the switching function of the three-way valve can avoid unnecessary coolant flow, thereby saving energy. When a certain device does not need cooling, the coolant can be redirected to other devices that need cooling to reduce energy waste. The heating belt is used to provide heat to the coolant pipeline to maintain or increase the temperature of specific components in the system. The heating belt can be placed at the inlet or outlet of the coolant circulation, or near a specific heat source, so as to provide local heating. The three-way valve and the heating belt are both electronically controlled devices, and the controller 11 in the electronic control box provides control instructions. The electronic control box can control the three-way valve to switch the flow direction of the coolant as needed, thereby achieving thermal management of different equipment and improving the flexibility and efficiency of the liquid cooling unit. When the ambient temperature is low, the electronic control box can automatically start the heating belt to ensure the normal operation of the liquid cooling unit.

[0047] The data acquisition module includes a temperature sensor, a pressure sensor and a flow meter. The temperature sensor and the pressure sensor are installed on the coolant pipeline. Specifically, the temperature sensor can be installed at the coolant inlet and outlet, as well as possible hot spots, such as near the water pump and the heat exchanger, to monitor the temperature change of the coolant. The pressure sensor can be installed in the high-pressure area and low-pressure area of ​​the coolant pipeline, such as the outlet and inlet of the water pump, and the highest point and the lowest point of the system, so as to monitor the pressure distribution of the entire system. The flow meter is installed at the outlet or inlet of the water pump to measure the flow rate and flow of the coolant. In addition, the data acquisition module can also include other types of sensors and devices to further monitor and control the working status of the liquid cooling unit, such as humidity sensors, noise sensors and vibration sensors, etc. The data acquisition module can help to fully understand the working status of the liquid cooling unit, so as to better control and maintain the liquid cooling unit.

[0048] The electrical control box also includes a shielding cover, which is used to shield the controller 11 to block external signals from interfering with the controller 11. The shape and size of the shielding cover are usually customized according to the size and shape of the controller 11 to ensure that the controller 11 is completely covered and will not affect its operation. The material of the shielding cover is usually metal, such as aluminum or copper, etc. These materials have good electromagnetic shielding properties and can effectively block various types of electromagnetic interference, including radio frequency interference (RFI) and electromagnetic interference (EMI). The power elements in current liquid cooling units are usually equipped with internal drivers and controllers 11. Due to the electromagnetic compatibility (EMC) problems caused by the high current operation of the power elements, the normal operation of the controller 11 is affected. In order to prevent EMC interference, the controller 11 is usually installed outside the electrical control box, and the system complexity and cost are high. The controller 11 of the embodiment of the present disclosure is an integrated controller 11, which can control various power elements at the same time, and the controller 11 is covered with the above-mentioned shielding cover, so that the controller 11 is integrated into the electrical control box, which simplifies the complexity of the system and improves the operating efficiency of the system. The shielding cover can also reduce the impact of electromagnetic interference and environmental factors, thereby improving the stability and accuracy of the controller 11.

[0049] The electric control box is also provided with a filter board, a high-voltage auxiliary source and a relay board, the filter board is connected to the output end of the frequency converter, the high-voltage auxiliary source is connected to the input end of the frequency converter, and the relay board is connected to the second communication port 22. By integrating the filter board, the high-voltage auxiliary source and the relay board into the electric control box, it is helpful to centrally monitor and manage, improve work efficiency, reduce the connection between components, reduce the failure rate, and improve the stability and reliability of the system.

[0050] The box body also includes a door, and the door and the back panel 1 are arranged opposite to each other. The door is provided with a display screen. The size and type of the display screen can be selected according to actual needs, such as a liquid crystal display screen, an OLED display screen, etc. The display screen is connected to the controller 11, and is used to display the information of the data acquisition module in real time, and to control the operation of the liquid cooling unit. The display screen is usually connected to the controller 11 via a cable, and the other end of the cable is connected to the corresponding interface on the controller 11. The specific connection method can be hard wiring or wireless connection. Through the display screen, the operator can understand the operating status of the liquid cooling unit at any time, discover and solve problems in time. In addition, various operations can be performed through the display screen without opening the electrical control box, which greatly improves work efficiency.

[0051] The box body also includes a hinge 16, which is located on the side of the box body opposite to the side panel 2, and is used to connect the box door and the box body so that the box door can be smoothly opened and closed. The hinge 16 allows the box door to rotate relative to the box body, so that the operator can easily access and maintain the equipment and electrical components in the electric control box. The hinge 16 is generally made of metal, such as stainless steel or aluminum alloy, to ensure its durability and stability. Its shape and size can be customized according to the specific requirements of the electric control box. Common types of hinges 16 include hinge hinges, pin hinges, and ball hinges. The interface module 13 is located near the hinge 16, which can reduce the length of the line, reduce the possibility of electromagnetic interference, improve the stability and reliability of the system, and make it more convenient to route and connect power lines and signal lines, reduce the spanning distance and vertical lifting of cables, and improve the convenience of installation and maintenance.

[0052] The back panel 1 includes a heat dissipation module 3, which includes equidistant and evenly distributed heat sinks and fans. The heat sink is a metal sheet with high thermal conductivity, usually made of aluminum alloy or copper, which can effectively increase the contact area between heat and surrounding air, thereby improving the heat dissipation effect. The heat sink can be a parallel fin structure, or can be designed in a spiral or other form to increase the surface area for heat dissipation. The heat sink forms a heat dissipation duct, and the fan is located at either end of the heat dissipation duct. The fan generates airflow, sucks surrounding air into the heat dissipation duct, and accelerates the flow, which can effectively increase the contact between the air and the heat sink, take away the heat on the heat sink, and discharge the hot air out of the system, thereby achieving heat dissipation.

[0053] This embodiment also provides a thermal management system, which includes the thermal management unit mentioned above.

[0054] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A thermal management unit, characterized in that: include: A liquid cooling unit, the liquid cooling unit comprising a power element and a data acquisition module; An electric control box, the electric control box comprising a box body and a control assembly, the box body comprising a back panel (1) and a side panel (2), the side panel (2) being arranged adjacent to the back panel (1), and the control assembly being located on the back panel (1); The side panel (2) is provided with a first communication port (21) and a second communication port (22), the data acquisition module is connected to the first communication port (21), the control component comprises a controller (11) and a frequency converter, the frequency converter is connected to the second communication port (22), and the controller (11) is connected to the first communication port (21) and the second communication port (22) to control the frequency converter; The back panel (1) is provided with an interface module (13), the interface module (13) is connected to the power element, and the frequency converter is connected to the interface module (13).

2. The thermal management unit according to claim 1, characterized in that: The power element comprises a compressor, a fan and a water pump, the frequency converter comprises a compressor frequency converter, a fan frequency converter and a water pump frequency converter, the interface module (13) comprises a compressor interface, a fan interface and a water pump interface, the compressor frequency converter is connected to the compressor via the compressor interface, the fan frequency converter is connected to the fan via the fan interface, and the water pump frequency converter is connected to the water pump via the water pump interface.

3. The thermal management unit according to claim 2, characterized in that: The liquid cooling unit also includes a coolant pipeline, which is used to transport coolant. A three-way ball valve and a heating belt are provided in the coolant pipeline. The three-way ball valve is used to switch the flow direction of the coolant, and the heating belt is used to provide heat to the coolant pipeline.

4. The thermal management unit according to claim 3, characterized in that: The data acquisition module comprises a temperature sensor, a pressure sensor and a flow meter. The temperature sensor and the pressure sensor are installed on the coolant pipeline, and the flow meter is installed at the outlet or inlet of the water pump.

5. The thermal management unit according to claim 1, characterized in that: The electric control box also includes a shielding cover, which is used to shield the controller (11) to block external signals from interfering with the controller (11).

6. The thermal management unit according to claim 1, characterized in that: The electric control box is also provided with a filter board, a high-voltage auxiliary source and a relay board, the filter board is connected to the output end of the frequency converter, the high-voltage auxiliary source is connected to the input end of the frequency converter (120), and the relay board is connected to the second communication port (22).

7. The thermal management unit according to claim 1, characterized in that: The box body also includes a box door, which is arranged opposite to the back panel (1). The box door is provided with a display screen, which is connected to the controller (11) and is used to display the information of the data acquisition module in real time and to control the operation of the liquid cooling unit.

8. The thermal management unit according to claim 7, characterized in that: The box body further comprises a hinge (16), wherein the hinge (16) is located on a side of the box body opposite to the side panel (2) and is used to connect the box door and the box body, and the interface module (13) is located adjacent to the hinge (16).

9. The thermal management unit according to claim 1, characterized in that: The back plate (1) comprises a heat dissipation module (3), the heat dissipation module (3) comprises heat dissipation fins and a fan which are evenly distributed at equal distances, the heat dissipation fins forming a heat dissipation air duct, and the fan is located at any end of the heat dissipation air duct.

10. A thermal management system, characterized in that: A thermal management unit comprising any one of claims 1 to 9.

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