Liquid cooling device

Abstract

The utility model discloses a liquid cooling device. The liquid cooling device comprises a high-voltage direct-current power supply, a low-voltage power supply port, a cooling module, a DCDC module, a bus, a control unit and a heat exchange module, the high-voltage direct-current power supply is connected with the cooling module and used for outputting first direct-current voltage; the DCDC module is connected with a high-voltage direct-current power supply and a bus, the control unit is connected with the heat exchange module, the cooling module and the bus, and the DCDC module is used for reducing first direct-current voltage of the high-voltage direct-current power supply into second direct-current voltage; the low-voltage power supply port is connected with the bus. The reliability of the liquid cooling device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of temperature control technology, and in particular to a liquid cooling device. Background Technology

[0002] Liquid cooling devices are widely used in various scenarios such as automotive refrigeration and power equipment cooling due to their high efficiency, low energy consumption, and ability to adapt to high-temperature environments.

[0003] Traditional liquid cooling devices typically use an external power supply of 220V or 380V. However, if the external power supply is unstable or experiences a power outage, the entire liquid cooling device will malfunction, preventing effective heat dissipation and potentially damaging the cooled equipment. In other words, existing liquid cooling devices suffer from low reliability. Utility Model Content

[0004] This invention provides a liquid cooling device to solve the problem of low reliability in existing liquid cooling devices.

[0005] According to one aspect of the present invention, a liquid cooling device is provided, the liquid cooling device comprising: a high-voltage DC power supply, a low-voltage power supply port, a cooling module, a DC-DC module, a busbar, a control unit, and a heat exchange module;

[0006] The high-voltage DC power supply is connected to the cooling module and is used to output a first DC voltage;

[0007] The DC-DC module is connected to the high-voltage DC power supply and the bus, and the control unit is connected to the heat exchange module, the cooling module and the bus respectively. The DC-DC module is used to step down the first DC voltage of the high-voltage DC power supply to the second DC voltage.

[0008] The low-voltage power supply port is connected to the busbar.

[0009] Optionally, the busbar includes a first busbar and a second busbar, the first busbar being connected to the control unit and the second busbar being connected to the heat exchange module.

[0010] Optionally, the DC-DC module includes a first DC-DC unit and a second DC-DC unit;

[0011] The first DC-DC unit is connected to the first bus, and the second DC-DC unit is connected to the second bus;

[0012] The rated power of the first DC-DC unit is the first power, and the rated power of the second DC-DC unit is the second power.

[0013] Optionally, the cooling module includes a compressor driver and a compressor;

[0014] The input terminal of the compressor driver is connected to the high-voltage DC power supply, the output terminal of the compressor driver is connected to the compressor, and the control terminal of the compressor driver is connected to the first output terminal of the control unit, for driving the compressor to work.

[0015] Optionally, the compressor driver includes: a pre-charge unit, an inverter unit, and a filter unit;

[0016] The pre-charging unit is connected to the high-voltage DC power supply and is used to limit the inrush current generated by the high-voltage DC power supply.

[0017] The inverter unit is connected to the pre-charge unit and is used to invert the first DC voltage into the first AC voltage.

[0018] The filter unit is connected between the inverter unit and the compressor to suppress harmonics.

[0019] Optionally, the heat exchange module includes a water pump and a fan;

[0020] The input end of the water pump is connected to the second busbar, and the control end of the water pump is connected to the second output end of the control unit. The water pump is used to circulate liquid.

[0021] The input terminal of the fan is connected to the second bus, and the control terminal of the fan is connected to the fourth output terminal of the control unit. The fan is used for heat dissipation.

[0022] Optionally, the number of fans is at least two.

[0023] Optionally, the liquid cooling device further includes: a water replenishment pump;

[0024] The input end of the water replenishment pump is connected to the second bus, and the control end of the water replenishment pump is connected to the third output end of the control unit. The water replenishment pump is used for replenishing liquid.

[0025] Optionally, the liquid cooling device further includes an overheat protection module, the input terminal of which is connected to the high-voltage DC power supply, and the control terminal of which is connected to the first input terminal of the control unit, for monitoring temperature and overheat protection.

[0026] Optionally, the overheat protection module includes: a contactor and a positive temperature coefficient heater;

[0027] The input terminal of the contactor is connected to the high-voltage DC power supply, the control terminal of the contactor is connected to the first input terminal of the control unit, and the output terminal of the contactor is connected to the positive temperature coefficient heater.

[0028] The technical solution of this utility model embodiment, by setting a low-voltage power supply port connected to the busbar, allows power to be supplied to the busbar through the low-voltage power supply port in the event of a high-voltage DC power failure, ensuring that the heat exchange module and control unit connected to the busbar do not experience power outages. The control unit can control the normal operation of the low-voltage components of the liquid cooling device connected to the busbar; the heat exchange module can continue to circulate heat from the liquid cooling device to the outside, ensuring it remains within its normal operating temperature range. In other words, this utility model improves the reliability of the liquid cooling device.

[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the structure of a liquid cooling device provided in an embodiment of this utility model;

[0032] Figure 2 A schematic diagram of another liquid cooling device provided in an embodiment of this utility model;

[0033] Figure 3 A schematic diagram of the structure of another liquid cooling device provided in this embodiment of the utility model;

[0034] Figure 4 A schematic diagram of another liquid cooling device provided in this embodiment of the present utility model;

[0035] Figure 5 This is a schematic diagram of the connection relationship of a liquid cooling device provided in an embodiment of the present utility model. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Figure 1 This is a schematic diagram of a liquid cooling device provided in an embodiment of the present invention. This embodiment can be applied to cooling various industrial equipment. Figure 1 As shown, the liquid cooling device includes: a high-voltage DC power supply 110, a low-voltage power supply port 120, a cooling module 130, a DC-DC converter module 140, a bus 150, a control unit 160, and a heat exchange module 170; the high-voltage DC power supply 110 is connected to the cooling module 130 and is used to output a first DC voltage; the DC-DC converter module 140 is connected to the high-voltage DC power supply 110 and the bus 150; the control unit 160 is connected to the heat exchange module 170, the cooling module 130, and the bus 150 respectively; the DC-DC converter module 140 is used to step down the first DC voltage of the high-voltage DC power supply 110 to a second DC voltage; the low-voltage power supply port 120 is connected to the bus 150.

[0039] Specifically, the high-voltage DC power supply 110 refers to a power supply unit capable of providing high-voltage DC output. The first DC voltage refers to the voltage output by the high-voltage DC power supply 110; for example, the first DC voltage can be a high-voltage DC of 600V to 900V. The low-voltage power supply port 120 refers to an interface or port used to supply power to low-voltage equipment, typically providing a lower DC voltage. For example, the voltage output by the low-voltage power supply port 120 can be 12V or 24V. The cooling module 130 refers to the cooling component in the liquid cooling system. The DC-DC converter module 140 refers to a DC-DC converter module capable of converting the first DC voltage to a second DC voltage; for example, the DC-DC converter module 140 can convert 900V to 24V. The bus 150 refers to the wire used to connect the power supply and the load, capable of carrying current and distributing electrical energy to various devices or modules. The control unit 160 refers to the control component of the liquid cooling system, which may include circuitry and software for monitoring and controlling the operation of the entire liquid cooling system, including functions such as power management, temperature control, and fault detection. The heat exchange module 170 refers to a component used to improve heat exchange efficiency, which typically achieves heat transfer through the circulation of liquid or gas to maintain the system's temperature stability.

[0040] In this embodiment of the invention, the high-voltage DC power supply 110 outputs a first DC voltage to provide power to the cooling module 130; simultaneously, the DC-DC module 140 converts the first DC voltage into a second DC voltage to power the heat exchange module 170 and the control unit 160 connected to the bus 150. If the high-voltage DC power supply 110 fails, the second DC voltage can be input through the low-voltage power supply port 120 to power the heat exchange module 170 and the control unit 160 connected to the bus 150, ensuring that the equipment connected to the bus 150 will not experience power outages.

[0041] The technical solution of this utility model embodiment ensures that the heat exchange module and control unit connected to the busbar do not lose power in the event of a high-voltage DC power supply failure by supplying power to the busbar through the low-voltage power supply port. The control unit can control the normal operation of the low-voltage components connected to the busbar in the liquid cooling device; the heat exchange module can continue to circulate the heat from the liquid cooling device to the outside, ensuring that it remains within its normal operating temperature range. In other words, this utility model improves the reliability of the liquid cooling device.

[0042] Figure 2 This is a schematic diagram of another liquid cooling device provided in an embodiment of the present invention. Based on the above embodiments, as follows... Figure 2 As shown, optionally, bus 150 includes a first bus 151 and a second bus 152. The first bus 151 is connected to the control unit 160, and the second bus 152 is connected to the heat exchange module 170.

[0043] Specifically, the first busbar 151 refers to the busbar connected to the control unit 160. The second busbar 152 refers to the busbar connected to the heat exchange module 170.

[0044] In this embodiment of the invention, the power requirements of the control unit 160 and the heat exchange module 170 are different, therefore the maximum power that the first busbar 151 and the second busbar 152 can withstand are different. Since the control unit 160 has a lower power requirement, the first busbar 151 can use a thinner wire specification, thereby saving material costs and reducing system weight. However, the heat exchange module 170 requires a higher power, so the second busbar 152 can use a thicker wire specification. Furthermore, the heat exchange module 170 generates heat during operation, so the second busbar 152 also needs to ensure reliable heat dissipation to avoid equipment failure caused by overload.

[0045] Based on the above embodiments, continue to refer to Figure 2 Optionally, the DC-DC module includes a first DC-DC unit 141 and a second DC-DC unit 142; the first DC-DC unit 141 is connected to the first bus 151, and the second DC-DC unit 142 is connected to the second bus 152; the rated power of the first DC-DC unit 141 is the first power, and the rated power of the second DC-DC unit 142 is the second power.

[0046] Specifically, the first DC-DC unit 141 refers to a DC-DC converter connected to the first bus 151, which can step down the first DC voltage output from the high-voltage DC power supply 110 to a second DC voltage, ensuring the stable operation of the control unit 160. The second DC-DC unit 142 refers to a DC-DC converter connected to the second bus 152, which can step down the first DC voltage output from the high-voltage DC power supply 110 to a second DC voltage, ensuring the stable operation of the heat exchange module 170. Since the control unit 160 and the heat exchange module 170 require different power, the rated power of the first DC-DC unit 141 and the rated power of the second DC-DC unit 142 are also different. For example, the rated power of the first DC-DC unit 141, i.e., the first power, can be 75W, and the rated power of the second DC-DC unit 142, i.e., the second power, can be 1500W.

[0047] In this embodiment of the invention, the control unit 160 typically performs data processing, monitoring, and control functions, requiring relatively low power. The heat exchange module 170 is mainly responsible for heat transfer during the liquid cooling process, requiring higher power and needing to be designed to withstand high power loads. Therefore, the first DC-DC unit 141 connected to the control unit 160 has a lower rated power, while the second DC-DC unit 142 connected to the heat exchange module 170 has a higher rated power.

[0048] In this embodiment of the invention, because the control unit requires less power and the heat exchange module requires more power, both the first bus and the first DC-DC unit connected to the control unit are selected with lower power ratings, while both the second bus and the second DC-DC unit connected to the heat exchange module are selected with higher power ratings. By matching different buses and DC-DC units to different loads, this invention not only improves the efficiency of electrical energy utilization but also enhances the flexibility and adaptability of the liquid cooling device, thereby further improving the overall performance and efficiency of the liquid cooling device.

[0049] Figure 3 This is a schematic diagram of another liquid cooling device provided as an embodiment of the present utility model. Based on the above embodiments, as follows... Figure 3 As shown, optionally, the cooling module 130 includes a compressor driver 131 and a compressor 132; the input terminal of the compressor driver 131 is connected to the high-voltage DC power supply 110, the output terminal of the compressor driver 131 is connected to the compressor 132, and the control terminal of the compressor driver 131 is connected to the first output terminal of the control unit 160 for driving the compressor 132 to work.

[0050] Specifically, compressor driver 131 refers to the electrical equipment responsible for controlling and driving the operation of compressor 132. Compressor driver 131 can receive instructions from control unit 160 and adjust the operating state of compressor 132 according to the current temperature of the liquid cooling system and set conditions, including starting / stopping, speed adjustment, etc. Compressor 132 refers to the core component in the liquid cooling system, responsible for compressing the refrigerant to a high-pressure state and driving its circulation.

[0051] In this embodiment of the invention, under the control of the control unit 160, the compressor driver 131 drives the compressor 132 to work, effectively promoting the circulation of refrigerant in the entire liquid cooling device, thereby completing the absorption and release of heat and realizing the cooling function.

[0052] Optionally, the compressor driver 131 includes: a pre-charging unit, an inverter unit, and a filter unit; the pre-charging unit is connected to a high-voltage DC power supply and is used to limit the inrush current generated by the high-voltage DC power supply; the inverter unit is connected to the pre-charging unit and is used to invert the first DC voltage into a first AC voltage; the filter unit is connected between the inverter unit and the compressor and is used to suppress harmonics.

[0053] Specifically, the pre-charge unit is the component in the compressor driver 131 responsible for charging the high-voltage DC power supply before the liquid cooling unit starts. Pre-charging reduces the electrical shock caused by current surges, protecting the safety and stability of the entire liquid cooling unit. The inverter unit refers to the component in the compressor driver 131 used to convert DC voltage to AC voltage. Its main function is to invert the first DC voltage provided by the pre-charge unit into a first AC voltage to drive the compressor 132 to operate normally. The filter unit is the component connected between the inverter unit and the compressor 132 to improve power quality. Through filtering, the filter unit can reduce the high-frequency noise and electromagnetic interference generated by the inverter unit, improving the stability and reliability of the liquid cooling unit. At the same time, the filter unit can also protect the compressor 132 from the effects of fluctuating current.

[0054] In this embodiment of the invention, the pre-charging unit can pre-charge the high-voltage DC power supply 110 before the liquid cooling device is started, the inverter unit converts the DC power into AC power, and the filter unit is responsible for suppressing harmonics.

[0055] Based on the above embodiments, continue to refer to Figure 3 Optionally, the heat exchange module 170 includes a water pump 171 and a fan 173; the input terminal of the water pump 171 is connected to the second bus 152, and the control terminal of the water pump 171 is connected to the second output terminal of the control unit 160. The water pump 171 is used to circulate liquid; the input terminal of the fan 173 is connected to the second bus 152, and the control terminal of the fan 173 is connected to the fourth output terminal of the control unit 160. The fan 173 is used for heat dissipation.

[0056] Specifically, water pump 171 refers to a mechanical device used to circulate liquid to cool a liquid cooling device. For example, water pump 171 can drive the circulation of condensate in the liquid cooling device and can also discharge the condensate. Fan 173 refers to a component used to promote airflow and achieve heat dissipation.

[0057] In this embodiment of the invention, the water pump 171 and the fan 173 are connected not only to the second DC-DC unit 142, but also to the low-voltage power supply port 120. Even if the high-voltage DC power supply 110 stops supplying power due to faults or other factors, the low-voltage power supply port 120 can still provide power, thereby enabling the water pump 171 to drive the circulation of condensate in the liquid cooling device to achieve a cooling effect, and the fan 173 to dissipate heat.

[0058] Optionally, the number of fans 173 is at least two.

[0059] For example, the number of fans 173 can be two, three, or four, etc. In this embodiment of the invention, multiple fans 173 can increase the airflow rate and promote rapid heat dissipation, which helps to more effectively reduce the temperature of the equipment or system and ensure its operation within a safe operating range. Furthermore, multiple fans 173 can serve as a redundant design, ensuring that even if one or more of the fans 173 fail, the liquid cooling device can still maintain its cooling effect by relying on the other fans 173. This redundancy can improve the overall reliability and stability of the system.

[0060] Based on the above real-time examples, continue to refer to Figure 3 Optionally, the liquid cooling device also includes a water replenishment pump 172, the input end of which is connected to the second bus 152, and the control end of which is connected to the third output end of the control unit 160. The water replenishment pump 172 is used for replenishing liquid.

[0061] Specifically, the water pump 172 refers to a mechanical device for replenishing liquid to a device. For example, the water pump 172 can replenish external liquid to a liquid cooling device.

[0062] In this embodiment of the invention, the water replenishment pump 172 is connected not only to the second DC-DC unit 142, but also to the low-voltage power supply port 120. Even if the high-voltage DC power supply 110 stops supplying power due to faults or other factors, the low-voltage power supply port 120 can still provide power, and the water replenishment pump 172 can still replenish the liquid, ensuring that there is enough liquid in the liquid cooling device.

[0063] The technical solution of this utility model embodiment, in the event of a high-voltage DC power supply failure, supplies power to the water pump, replenishment pump, fan, and control unit through the low-voltage power supply port, ensuring that the liquid cooling device can normally perform liquid replenishment, liquid circulation, liquid drainage, and heat dissipation operations, thereby absorbing and dissipating heat and ensuring that the liquid cooling device can maintain its normal operating temperature. In other words, this utility model can improve the reliability of the liquid cooling device.

[0064] Figure 4 This is a schematic diagram of another liquid cooling device provided as an embodiment of the present utility model. Based on the above embodiments, as follows... Figure 4 As shown, optionally, the liquid cooling device also includes: an overheat protection module 180, the input terminal of which is connected to the high-voltage DC power supply 110, and the control terminal of which is connected to the first input terminal of the control unit 160, for monitoring temperature and overheat protection.

[0065] Specifically, the overheat protection module 180 refers to a device used to monitor the temperature of the liquid cooling unit and provide safety protection, designed to prevent equipment damage or safety hazards caused by excessive temperature.

[0066] In this embodiment of the utility model, the overheat protection module 180 is responsible for monitoring the temperature inside the liquid cooling device and taking necessary protective measures to prevent accidental overheating events and ensure that the stability and safety of the liquid cooling device can be maintained under any working conditions.

[0067] Based on the above embodiments, continue to refer to Figure 4 Optionally, the overheat protection module 180 includes: a contactor 181 and a positive temperature coefficient heater 182; the input terminal of the contactor 181 is connected to the high voltage DC power supply 110, the control terminal of the contactor 181 is connected to the first input terminal of the control unit 160, and the output terminal of the contactor 181 is connected to the positive temperature coefficient heater 182.

[0068] Specifically, contactor 181 refers to an electrical control device used to implement switching control in a circuit. Contactor 181 can close or open a circuit via a control signal, thereby controlling the power supply. Positive temperature coefficient heater 182 refers to an electric heating element whose resistance increases with increasing temperature, used to heat or maintain a specific temperature.

[0069] In this embodiment of the utility model, if the internal temperature of the liquid cooling device is too high, the resistance of the positive temperature coefficient heater 182 gradually increases, and the current flowing through the contactor 181 gradually decreases. When the current flowing through the contactor 181 is less than the set value, the contactor 181 disconnects and sends an alarm signal to the control unit 160.

[0070] The technical solution of this utility model embodiment monitors the temperature of the liquid cooling device through a positive temperature coefficient heater, thereby achieving temperature protection of the liquid cooling device and effectively improving the reliability of the liquid cooling device.

[0071] Figure 5 This is a schematic diagram illustrating the connection relationship of a liquid cooling device provided in an embodiment of the present invention. Figure 5 As shown, at temperatures above 0°C, the internal circulation of this liquid cooling device is as follows: When the liquid cooling device starts working, the compressor 132 starts operating, compressing the low-pressure gaseous refrigerant into a high-pressure gaseous refrigerant. The high-pressure gaseous refrigerant enters the condenser 214 and becomes liquid refrigerant. After passing through the plate heat exchanger 224, the liquid refrigerant flows into the liquid receiver-dryer 215, which removes moisture from the liquid refrigerant. Then, the liquid refrigerant enters the cooler 210 through the electronic expansion valve 216, where it begins to absorb heat from the surrounding medium, completing the cooling process. Simultaneously, the liquid refrigerant in the cooler gradually evaporates into a gaseous state and re-enters the compressor 132 for circulation. The fan 173 is located near the plate heat exchanger 224, which accelerates airflow and improves the heat dissipation efficiency of the liquid cooling device.

[0072] Below 0℃, the internal circulation of the liquid cooling device is as follows: When the water supply pump 172 starts, water in the water tank 219 is pumped into the water pump 171 through the one-way valve 218 and the expansion tank 217. The water pump 171 enables water circulation in the liquid-cooled air conditioner. Specifically, the water pump 171, through the three-way valve 212, allows a portion of the water to flow into the cooler 210 via the automatic vent valve 211, which automatically removes air or gas present in the cooling circulation. The other portion of the water flows into the low-temperature heat dissipation tank 213. The water in the low-temperature heat dissipation tank 213 has a lower temperature, which can effectively absorb heat from the cooler 210, further reducing the temperature around the liquid cooling device. The water in the cooler 210 passes through the positive temperature coefficient heater 182 and, together with the water in the low-temperature heat dissipation tank 213, enters the water tank 219 through the ball valve 220, thus achieving water circulation. The positive temperature coefficient heater 182 raises the temperature of the water flowing out of the cooler 210, thereby preventing freezing or low-temperature failure.

[0073] In addition, battery 223 is connected to cryogenic water tank 213, positive temperature coefficient heater 182, and expansion valve 217 to provide power. Temperature sensor 221 and pressure sensor 222 are responsible for detecting temperature and pressure, respectively, to ensure the normal operation of the entire liquid cooling system.

[0074] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0075] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A liquid cooling device, characterized by, The liquid cooling device includes: a high-voltage DC power supply, a low-voltage power supply port, a cooling module, a DC-DC module, a busbar, a control unit, and a heat exchange module; The high-voltage DC power supply is connected to the cooling module and is used to output a first DC voltage; The DC-DC module is connected to the high-voltage DC power supply and the bus, and the control unit is connected to the heat exchange module, the cooling module and the bus respectively. The DC-DC module is used to step down the first DC voltage of the high-voltage DC power supply to the second DC voltage. The low-voltage power supply port is connected to the busbar.

2. The liquid cooling device of claim 1, wherein, The busbar includes a first busbar and a second busbar, the first busbar being connected to the control unit and the second busbar being connected to the heat exchange module.

3. The liquid cooling device of claim 2, wherein, The DC-DC module includes a first DC-DC unit and a second DC-DC unit; The first DC-DC unit is connected to the first bus, and the second DC-DC unit is connected to the second bus; The rated power of the first DC-DC unit is the first power, and the rated power of the second DC-DC unit is the second power.

4. The liquid cooling device of claim 1, wherein, The cooling module includes a compressor driver and a compressor; The input terminal of the compressor driver is connected to the high-voltage DC power supply, the output terminal of the compressor driver is connected to the compressor, and the control terminal of the compressor driver is connected to the first output terminal of the control unit, for driving the compressor to work.

5. The liquid cooling device of claim 4, wherein, The compressor driver includes: a pre-charge unit, an inverter unit, and a filter unit; The pre-charging unit is connected to the high-voltage DC power supply and is used to limit the inrush current generated by the high-voltage DC power supply. The inverter unit is connected to the pre-charge unit and is used to invert the first DC voltage into the first AC voltage. The filter unit is connected between the inverter unit and the compressor to suppress harmonics.

6. The liquid cooling device of claim 2, wherein, The heat exchange module includes a water pump and a fan; The input end of the water pump is connected to the second busbar, and the control end of the water pump is connected to the second output end of the control unit. The water pump is used to circulate liquid. The input terminal of the fan is connected to the second bus, and the control terminal of the fan is connected to the fourth output terminal of the control unit. The fan is used for heat dissipation.

7. The liquid cooling device of claim 6, wherein, The number of fans is at least two.

8. The liquid cooling device of claim 6, wherein, The liquid cooling device also includes: a water supply pump; The input end of the water replenishment pump is connected to the second bus, and the control end of the water replenishment pump is connected to the third output end of the control unit. The water replenishment pump is used for replenishing liquid.

9. The liquid cooling device of claim 1, wherein, The liquid cooling device further includes an overheat protection module, the input terminal of which is connected to the high-voltage DC power supply, and the control terminal of which is connected to the first input terminal of the control unit, for monitoring temperature and overheat protection.

10. The liquid cooling device of claim 9, wherein, The overheat protection module includes: a contactor and a positive temperature coefficient heater; The input terminal of the contactor is connected to the high-voltage DC power supply, the control terminal of the contactor is connected to the first input terminal of the control unit, and the output terminal of the contactor is connected to the positive temperature coefficient heater.

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