Liquid cooling heat dissipation micro-grid

Abstract

The utility model relates to a liquid cooling heat dissipation micro-grid in the micro-grid field, which comprises a control system, the control system is electrically connected with an energy storage unit, a photovoltaic inversion unit and a charging unit, and the energy storage unit, the photovoltaic inversion unit and the charging unit are respectively connected with a first heat exchange device, a second heat exchange device and a third heat exchange device. The first heat exchange device, the second heat exchange device and the third heat exchange device are all communicated and connected through a heat dissipation circulating pipeline, the heat dissipation circulating pipeline is communicated and connected with a liquid cooling heat dissipation device, and cooling liquid is arranged in the liquid cooling heat dissipation device. And cooling liquid is connected with the liquid cooling heat dissipation device through a heat dissipation circulating pipeline and circularly flows among the first heat exchange device, the second heat exchange device and the third heat exchange device, so that high-efficiency heat exchange is realized, the heat dissipation efficiency is improved, and the service life of the photovoltaic power generation system is prolonged. And the stability and reliability of the micro-grid are improved.

Description

Technical Field

[0001] The utility model relates to the field of microgrids, and particularly to a microgrid with liquid cooling heat dissipation. Background Art

[0002] With the continuous growth of energy demand and the increasing emphasis on environmental protection, microgrids, as an efficient, reliable, and flexible energy supply system, have received extensive attention and application. This includes, but is not limited to, residential communities, commercial parks, industrial parks, remote rural areas, medical institutions, communication centers, and renewable energy communities, etc.

[0003] A microgrid forms a power supply system that can operate independently or interact with the main grid by integrating multiple distributed power sources, combined with energy storage devices, control equipment, and loads. Such a system can not only provide reliable and clean power for various users, but also effectively optimize energy management, reduce energy waste, and improve energy utilization efficiency.

[0004] However, although existing microgrids perform well in energy supply and management, there are still some defects. During the operation of a microgrid system, the heat dissipation problem of electronic devices has always been an important factor affecting the system performance and stability. The traditional air-cooling heat dissipation method has been difficult to meet the requirements in some high-power and high-density application scenarios, and thus it is often difficult to dissipate heat effectively, resulting in too high device temperature, affecting the stability and service life of the microgrid system. In addition, the traditional air-cooling heat dissipation needs to consume additional electric energy to drive heat dissipation devices such as fans, increasing the overall energy consumption of the microgrid and affecting the user experience. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above defects and provide a microgrid with liquid cooling heat dissipation to solve the technical problem that the air-cooling heat dissipation of electronic devices in the existing microgrid in the above background art has a poor effect and is difficult to meet high-power and high-density application scenarios, thus affecting the stability and heat dissipation performance of the microgrid.

[0006] The purpose of the utility model is achieved in the following way:

[0007] A microgrid with liquid cooling heat dissipation, comprising a control system, which is electrically connected to an energy storage unit, a photovoltaic inverter unit and a charging unit. The energy storage unit, the photovoltaic inverter unit and the charging unit are respectively connected to a first heat exchange device, a second heat exchange device and a third heat exchange device. The first heat exchange device, the second heat exchange device and the third heat exchange device are all connected through a heat dissipation circulation pipeline. The heat dissipation circulation pipeline is connected to a liquid cooling heat dissipation device. A coolant is provided in the liquid cooling heat dissipation device. The coolant is respectively introduced into the first heat exchange device, the second heat exchange device and the third heat exchange device through the heat dissipation circulation pipeline by the liquid cooling heat dissipation device for heat exchange, and liquid cooling heat dissipation is carried out on the energy storage unit, the photovoltaic inverter unit and the charging unit respectively.

[0008] Further in the above description, the heat dissipation circulation pipeline includes a heat dissipation inlet pipe and a heat dissipation return pipe. One end of each of the heat dissipation inlet pipe and the heat dissipation return pipe is connected to the liquid cooling heat dissipation device, and the other ends of the heat dissipation inlet pipe and the heat dissipation return pipe are respectively connected to the first heat exchange device, the second heat exchange device and the third heat exchange device.

[0009] Specifically, the liquid cooling heat dissipation device is connected to an external cooling device for supplying coolant, so that the coolant is introduced into the heat dissipation inlet pipe through the liquid cooling heat dissipation device, and the coolant enters the corresponding first heat exchange device, second heat exchange device and third heat exchange device through the heat dissipation inlet pipe for heat exchange cooling. By means of liquid cooling heat exchange and heat dissipation, the heat dissipation efficiency is further improved.

[0010] Further in the above description, the first heat exchange device includes an energy storage liquid cooling control valve, an energy storage liquid cooling heat exchanger, an energy storage liquid cooling circulation pump, an energy storage liquid cooling inlet pipe and an energy storage liquid cooling return pipe. The energy storage liquid cooling control valve is installed between the heat dissipation inlet pipe and the energy storage liquid cooling heat exchanger. The energy storage liquid cooling circulation pump is installed on the energy storage liquid cooling heat exchanger and is connected to the energy storage liquid cooling inlet pipe through an energy storage distributor. The end of the energy storage liquid cooling inlet pipe is connected to the energy storage unit, and the energy storage liquid cooling return pipe is used to connect the energy storage liquid cooling heat exchanger and the energy storage unit.

[0011] Further in the above description, the second heat exchange device includes a photovoltaic liquid cooling control valve, a photovoltaic liquid cooling heat exchanger, a photovoltaic liquid cooling circulation pump, a photovoltaic liquid cooling inlet pipe and a photovoltaic liquid cooling return pipe. The photovoltaic liquid cooling control valve is installed between the heat dissipation inlet pipe and the photovoltaic liquid cooling heat exchanger. The photovoltaic liquid cooling circulation pump is installed on the photovoltaic liquid cooling heat exchanger and is connected to the photovoltaic liquid cooling inlet pipe through a photovoltaic distributor. The end of the photovoltaic liquid cooling inlet pipe is connected to the photovoltaic inverter unit, and the photovoltaic liquid cooling return pipe is used to connect the photovoltaic liquid cooling heat exchanger and the photovoltaic unit.

[0012] Further in the above description, the third heat exchange device includes a charging liquid cooling control valve, a charging liquid cooling heat exchanger, a charging liquid cooling circulation pump, a charging liquid cooling inlet pipe, and a charging liquid cooling return pipe. The charging liquid cooling control valve is installed between the heat dissipation inlet pipe and the charging liquid cooling heat exchanger. The charging liquid cooling circulation pump is installed on the charging liquid cooling heat exchanger and is connected to the charging liquid cooling inlet pipe through a charging distributor. The end of the charging liquid cooling inlet pipe is connected to the charging unit, and the charging liquid cooling return pipe is used to connect the charging liquid cooling heat exchanger and the charging unit.

[0013] Further in the above description, the energy storage unit includes an energy storage PCS module and an energy storage battery PACK. Both the energy storage PCS module and the energy storage battery PACK are provided with an energy storage liquid cooling inlet and an energy storage liquid cooling return port for connecting the energy storage liquid cooling inlet pipe and the energy storage liquid cooling return pipe.

[0014] Specifically, corresponding energy storage liquid cooling inlets and energy storage liquid cooling return ports are provided so that the heat inside the energy storage PCS module and the energy storage battery PACK can be absorbed and carried out by the coolant, further improving the heat dissipation efficiency of the energy storage PCS module and the energy storage battery PACK, and enhancing the service life and stability.

[0015] Further in the above description, the photovoltaic inversion unit includes a photovoltaic inversion module. The photovoltaic inversion module is provided with a photovoltaic liquid cooling inlet and a photovoltaic liquid cooling return port for connecting the photovoltaic liquid cooling inlet pipe and the photovoltaic liquid cooling return pipe.

[0016] Specifically, corresponding photovoltaic liquid cooling inlets and photovoltaic liquid cooling return ports are provided so that the heat inside the photovoltaic inversion module can be absorbed and carried out by the coolant, further improving the heat dissipation efficiency of the photovoltaic inversion module, and enhancing the service life and stability.

[0017] Further in the above description, the charging unit includes a liquid cooling charging gun and a charging module. Both the liquid cooling charging gun and the charging module are provided with a charging liquid cooling inlet and a charging liquid cooling return port for connecting the charging liquid cooling inlet pipe and the charging liquid cooling return pipe.

[0018] Specifically, corresponding charging liquid cooling inlets and charging liquid cooling return ports are provided so that the heat inside the liquid cooling charging gun and the charging module can be absorbed and carried out by the coolant, further improving the heat dissipation efficiency of the liquid cooling charging gun and the charging module, and enhancing the service life and stability.

[0019] Further in the above description, the coolant is a water-based coolant or an oil-based coolant.

[0020] Optionally, the corresponding water-based coolant or oil-based coolant can be selected according to different application scenarios to improve the heat dissipation efficiency of the electronic components inside the microgrid.

[0021] Further in the above description, the control system is also electrically connected with a number of temperature control sensors and a number of pressure sensors for detecting the temperature and pressure of the coolant flowing to the heat dissipation circulation pipeline, the first heat exchange device, the second heat exchange device and the third heat exchange device.

[0022] The temperature control sensors and pressure sensors respectively collect the temperature and pressure of the corresponding pipelines and upload them to the control system. The control system controls the opening size of the corresponding control valve and the frequency of the circulation pump to determine the cooling medium flowing through the pipeline, precisely taking away the heat of the system without generating excessive power consumption.

[0023] Advantages of the present utility model: By adopting the liquid cooling heat dissipation technology, compared with the traditional air cooling heat dissipation method, it can quickly dissipate the heat generated during the operation of the energy storage unit, photovoltaic inverter unit and charging unit. The coolant is connected to the liquid cooling heat dissipation device through the heat dissipation circulation pipeline and circulates between the first heat exchange device, the second heat exchange device and the third heat exchange device to achieve efficient heat exchange, improve the heat dissipation efficiency, thereby effectively reducing the working temperature of the equipment, and enhancing the stability and reliability of the microgrid system. And due to the high heat dissipation efficiency and temperature control ability of the liquid cooling heat dissipation method, the microgrid system can better adapt to complex environments and working conditions. During the operation of the liquid cooling heat dissipation system, due to the recycling of the coolant, the heat emission to the external environment is reduced, and at the same time, the noise pollution and energy consumption that may be brought by air cooling equipment such as fans are avoided, which is beneficial to improving the stability and service life of the microgrid. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall planar structure of this embodiment;

[0025] Figure 2 It is a schematic diagram of the installation and use of this embodiment in the first direction;

[0026] Figure 3 It is a schematic diagram of the installation and use of this embodiment in the second direction;

[0027] Figure 4 It is a schematic diagram of the flow direction of the coolant in the use state of this embodiment;

[0028] The reference numerals in the drawings are respectively: 1 - control system, 2 - energy storage unit, 21 - energy storage PCS module, 22 - energy storage battery PACK, 3 - photovoltaic inverter unit, 31 - photovoltaic inverter module, 4 - charging unit, 41 - liquid cooling charging gun, 42 - charging module, 5 - heat dissipation circulation pipeline, 51 - heat dissipation inlet pipe, 52 - heat dissipation return pipe, 6 - liquid cooling heat dissipation device;

[0029] 200 - First heat exchange device, 201 - Energy storage liquid cooling control valve, 202 - Energy storage liquid cooling heat exchanger, 203 - Energy storage liquid cooling circulation pump, 204 - Energy storage liquid cooling inlet pipe, 205 - Energy storage liquid cooling return pipe, 206 - Energy storage liquid distributor;

[0030] 300 - Second heat exchange device, 301 - Photovoltaic liquid cooling control valve, 302 - Photovoltaic liquid cooling heat exchanger, 303 - Photovoltaic liquid cooling circulation pump, 304 - Photovoltaic liquid cooling inlet pipe, 305 - Photovoltaic liquid cooling return pipe, 306 - Photovoltaic liquid distributor;

[0031] 400 - Third heat exchange device, 401 - Charging liquid cooling control valve, 402 - Charging liquid cooling heat exchanger, 403 - Charging liquid cooling circulation pump, 404 - Charging liquid cooling inlet pipe, 405 - Charging liquid cooling return pipe, 406 - Charging liquid distributor. Specific embodiments

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] In this embodiment, referring to Figures 1-4 , a micro - grid with liquid - cooled heat dissipation specifically implemented includes a control system 1. The control system 1 is electrically connected to an energy storage unit 2, a photovoltaic inverter unit 3, and a charging unit 4. The energy storage unit 2, the photovoltaic inverter unit 3, and the charging unit 4 are respectively connected to a first heat exchange device 200, a second heat exchange device 300, and a third heat exchange device 400. The first heat exchange device 200, the second heat exchange device 300, and the third heat exchange device 400 are all connected through a heat dissipation circulation pipeline 5. The heat dissipation circulation pipeline 5 is connected to a liquid - cooled heat dissipation device 6. A coolant is provided in the liquid - cooled heat dissipation device 6. The coolant is respectively introduced from the liquid - cooled heat dissipation device 6 into the first heat exchange device 200, the second heat exchange device 300, and the third heat exchange device 400 through the heat dissipation circulation pipeline 5 for heat exchange, and liquid - cooled heat dissipation is performed on the energy storage unit 2, the photovoltaic inverter unit 3, and the charging unit 4 respectively.

[0034] In this embodiment, the heat dissipation circulation pipeline 5 includes a heat dissipation inlet pipe 51 and a heat dissipation return pipe 52. One end of the heat dissipation inlet pipe 51 and the heat dissipation return pipe 52 is connected to the liquid - cooled heat dissipation device 6, and the other ends of the heat dissipation inlet pipe 51 and the heat dissipation return pipe 52 are respectively connected to the first heat exchange device 200, the second heat exchange device 300, and the third heat exchange device 400.

[0035] Specifically, the liquid - cooled heat dissipation device 6 is connected to an external cooling device for supplying coolant, so that the coolant is introduced into the heat dissipation inlet pipe 51 through the liquid - cooled heat dissipation device 6, and the coolant enters the corresponding first heat exchange device 200, second heat exchange device 300, and third heat exchange device 400 through the heat dissipation inlet pipe 51 for heat exchange cooling. Through liquid - cooled heat exchange and heat dissipation, the heat dissipation efficiency is further improved.

[0036] In this embodiment, the first heat exchange device 200 includes a storage energy liquid cooling control valve 201, a storage energy liquid cooling heat exchanger 202, a storage energy liquid cooling circulation pump 203, a storage energy liquid cooling inlet pipe 204, and a storage energy liquid cooling return pipe 205. The storage energy liquid cooling control valve 201 is installed between the heat dissipation inlet pipe 51 and the storage energy liquid cooling heat exchanger 202. The storage energy liquid cooling circulation pump 203 is installed on the storage energy liquid cooling heat exchanger 202 and is conductively connected to the storage energy liquid cooling inlet pipe 204 through a storage energy distributor 206. The end of the storage energy liquid cooling inlet pipe 204 is conductively connected to the energy storage unit 2. The storage energy liquid cooling return pipe 205 is used to conductively connect the storage energy liquid cooling heat exchanger 202 and the energy storage unit 2.

[0037] Specifically, the energy storage unit 2 includes an energy storage PCS module 21 and three or more energy storage battery PACKs 22. The three or more energy storage battery PACKs 22 are connected by a BMS master control. Both the energy storage PCS module 21 and the energy storage battery PACK 22 are provided with an energy storage liquid cooling inlet and an energy storage liquid cooling return port for connecting the energy storage liquid cooling inlet pipe 204 and the energy storage liquid cooling return pipe 205. The corresponding energy storage liquid cooling inlet and the energy storage liquid cooling return port are arranged so that the heat inside the energy storage PCS module 21 and the energy storage battery PACK 22 can be absorbed and carried out by the coolant, further improving the heat dissipation efficiency of the energy storage PCS module 21 and the energy storage battery PACK 22, and enhancing the service life and stability.

[0038] The specific liquid cooling circulation process is as follows: The coolant enters the storage energy liquid cooling heat exchanger 202 through the heat dissipation inlet pipe 51 for heat exchange, then passes through the storage energy liquid cooling circulation pump 203, is pressurized by the storage energy liquid cooling circulation pump 203, and then is evenly distributed to the storage energy liquid cooling inlet pipe 204 through the storage energy distributor 206, and then flows into the energy storage PCS module 21 and the energy storage battery PACK 22. The heat in the energy storage PCS module 21 and the energy storage battery PACK 22 is taken away by the coolant, and then returns to the storage energy liquid cooling heat exchanger 202 through the storage energy liquid cooling return pipe 205 for heat exchange, so as to continue to circulate into the next cycle.

[0039] In this embodiment, the second heat exchange device 300 includes a photovoltaic liquid cooling control valve 301, a photovoltaic liquid cooling heat exchanger 302, a photovoltaic liquid cooling circulation pump 303, a photovoltaic liquid cooling inlet pipe 304, and a photovoltaic liquid cooling return pipe 305. The photovoltaic liquid cooling control valve 301 is installed between the heat dissipation inlet pipe 51 and the photovoltaic liquid cooling heat exchanger 302. The photovoltaic liquid cooling circulation pump 303 is installed on the photovoltaic liquid cooling heat exchanger 302 and is conductively connected to the photovoltaic liquid cooling inlet pipe 304 through a photovoltaic distributor 306. The end of the photovoltaic liquid cooling inlet pipe 304 is conductively connected to the photovoltaic inverter unit 3. The photovoltaic liquid cooling return pipe 305 is used to conductively connect the photovoltaic liquid cooling heat exchanger 302 and the photovoltaic unit.

[0040] Specifically, the photovoltaic inverter unit 3 includes three or more photovoltaic inverter modules 31. The photovoltaic inverter module 31 is provided with a photovoltaic liquid cooling inlet and a photovoltaic liquid cooling outlet for connecting the photovoltaic liquid cooling inlet pipe 304 and the photovoltaic liquid cooling return pipe 305. By setting the corresponding photovoltaic liquid cooling inlet and outlet, the heat inside the photovoltaic inverter module 31 can be absorbed and carried out by the coolant, further improving the heat dissipation efficiency of the photovoltaic inverter module 31 and enhancing the service life and stability.

[0041] Specifically, the liquid cooling circulation process is as follows: The coolant enters the photovoltaic liquid cooling heat exchanger 302 through the heat dissipation inlet pipe 51 for heat exchange, then passes through the photovoltaic liquid cooling circulation pump 303. After being pressurized by the photovoltaic liquid cooling circulation pump 303, it passes through the photovoltaic liquid distributor 306 and is evenly distributed to the photovoltaic liquid cooling inlet pipe 304, and then flows into the photovoltaic inverter module 31. The heat in the photovoltaic inverter module 31 is taken away by the coolant, and then it flows back to the photovoltaic liquid cooling heat exchanger 302 through the photovoltaic liquid cooling return pipe 305 for heat exchange, and thus continues to circulate into the next cycle.

[0042] In this embodiment, the third heat exchange device 400 includes a charging liquid cooling control valve 401, a charging liquid cooling heat exchanger 402, a charging liquid cooling circulation pump 403, a charging liquid cooling inlet pipe 404 and a charging liquid cooling return pipe 405. The charging liquid cooling control valve 401 is installed between the heat dissipation inlet pipe 51 and the charging liquid cooling heat exchanger 402. The charging liquid cooling circulation pump 403 is installed on the charging liquid cooling heat exchanger 402 and is conductively connected to the charging liquid cooling inlet pipe 404 through the charging liquid distributor 406. The end of the charging liquid cooling inlet pipe 404 is conductively connected to the charging unit 4, and the charging liquid cooling return pipe 405 is used for conductive connection between the charging liquid cooling heat exchanger 402 and the charging unit 4.

[0043] Specifically, the charging unit 4 includes a liquid cooling charging gun 41 and three or more charging modules 42. The liquid cooling charging gun 41 and the charging module 42 are both provided with a charging liquid cooling inlet and a charging liquid cooling outlet for connecting the charging liquid cooling inlet pipe 404 and the charging liquid cooling return pipe 405. By setting the corresponding charging liquid cooling inlet and outlet, the heat inside the liquid cooling charging gun 41 and the charging module 42 can be absorbed and carried out by the coolant, further improving the heat dissipation efficiency of the liquid cooling charging gun 41 and the charging module 42 and enhancing the service life and stability.

[0044] The specific liquid cooling cycle process is as follows: The coolant enters the charging liquid cooling heat exchanger 402 through the heat dissipation liquid inlet pipe 51 for heat exchange, then passes through the charging liquid cooling circulation pump 403. After being pressurized by the charging liquid cooling circulation pump 403, it is evenly distributed to the charging liquid cooling inlet pipe 404 through the charging liquid distributor 406, and then flows into the liquid cooling charging gun 41 and the charging module 42. The heat in the liquid cooling charging gun 41 and the charging module 42 is carried away by the coolant, and then it flows back to the charging liquid cooling heat exchanger 402 through the charging liquid cooling return pipe 405 for heat exchange, so as to continue to circulate into the next cycle.

[0045] In this embodiment, the coolant adopts a water-based coolant or an oil-based coolant.

[0046] Optionally, corresponding water-based coolants or oil-based coolants can be selected according to different application scenarios to improve the heat dissipation efficiency of the electronic components inside the microgrid.

[0047] In this embodiment, the control system 1 is also electrically connected to a temperature control sensor (not shown) and a pressure sensor (not shown) for detecting the temperature and pressure of the coolant flowing through the heat dissipation circulation pipeline 5, the first heat exchange device 200, the second heat exchange device 300, and the third heat exchange device 400. The temperature control sensor and the pressure sensor respectively collect the temperature and pressure of the corresponding pipeline and upload them to the control system 1. The control system 1 controls the opening size of the corresponding control valve and the frequency of the circulation pump to determine the cooling medium passing through the pipeline, accurately taking away the heat of the system without generating excessive power consumption.

[0048] The specific installation and use structure in this embodiment is as follows: The control system 1, the energy storage unit 2, the photovoltaic inverter unit 3, the charging unit 4, the first heat exchange device 200, the second heat exchange device 300, the third heat exchange device 400, the heat dissipation circulation pipeline 5, and the liquid cooling heat dissipation device 6 are installed on the chassis. The entire microgrid system includes the control system 1, the energy storage unit 2, the photovoltaic inverter unit 3, and the charging unit 4. The heat dissipation circulation pipeline 5 is connected to the liquid cooling heat dissipation device 6 to form a primary side refrigeration system. The coolant for the primary refrigeration cycle of the refrigeration system can be a refrigerant cycle or a cooling water cycle. The coolant in this embodiment is a cooling water cycle. The first heat exchange device 200, the second heat exchange device 300, and the third heat exchange device 400 are all plate heat exchangers for heat exchange. The first heat exchange device 200, the second heat exchange device 300, and the third heat exchange device 400 form a secondary side refrigeration system with the corresponding energy storage unit 2, photovoltaic inverter unit 3, and charging unit 4, exchanging the secondary side heat to the heat exchange device and dissipating the heat of the electronic components in each unit to the outside through the primary side.

[0049] In summary, in this embodiment, by adopting the liquid cooling technology, compared with the traditional air cooling method, the heat generated during the operation of the energy storage unit 2, the photovoltaic inverter unit 3 and the charging unit 4 is quickly dissipated. The coolant is connected to the liquid cooling device 6 through the heat dissipation circulation pipeline 5 and circulates between the first heat exchange device 200, the second heat exchange device 300 and the third heat exchange device 400 to achieve efficient heat exchange, improve the heat dissipation efficiency, thereby effectively reducing the working temperature of the equipment and enhancing the stability and reliability of the microgrid system.

[0050] The above are only the preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention is disclosed above in preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent changed equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical meaning of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A microgrid with liquid cooling heat dissipation, including a control system, the control system is electrically connected to an energy storage unit, a photovoltaic inverter unit and a charging unit, and is characterized in that: The energy storage unit, photovoltaic inverter unit, and charging unit are respectively connected to a first heat exchange device, a second heat exchange device, and a third heat exchange device. The first heat exchange device, the second heat exchange device, and the third heat exchange device are all connected through a heat dissipation circulation pipeline. The heat dissipation circulation pipeline is connected to a liquid cooling heat dissipation device. A coolant is provided in the liquid cooling heat dissipation device. The coolant is introduced from the liquid cooling heat dissipation device into the first heat exchange device, the second heat exchange device, and the third heat exchange device respectively through the heat dissipation circulation pipeline for heat exchange, and liquid cooling heat dissipation is carried out on the energy storage unit, the photovoltaic inverter unit, and the charging unit respectively.

2. The microgrid with liquid cooling heat dissipation according to claim 1, characterized in that: The heat dissipation circulation pipeline includes a heat dissipation inlet pipe and a heat dissipation return pipe. One end of each of the heat dissipation inlet pipe and the heat dissipation return pipe is connected to the liquid cooling heat dissipation device in a conducting manner, and the other ends of the heat dissipation inlet pipe and the heat dissipation return pipe are respectively connected to the first heat exchange device, the second heat exchange device, and the third heat exchange device in a conducting manner.

3. The microgrid with liquid cooling heat dissipation according to claim 2, wherein: The first heat exchange device includes an energy storage liquid cooling control valve, an energy storage liquid cooling heat exchanger, an energy storage liquid cooling circulation pump, an energy storage liquid cooling inlet pipe, and an energy storage liquid cooling return pipe. The energy storage liquid cooling control valve is installed between the heat dissipation inlet pipe and the energy storage liquid cooling heat exchanger. The energy storage liquid cooling circulation pump is installed on the energy storage liquid cooling heat exchanger and is connected to the energy storage liquid cooling inlet pipe through an energy storage distributor. The end of the energy storage liquid cooling inlet pipe is connected to the energy storage unit, and the energy storage liquid cooling return pipe is used to connect the energy storage liquid cooling heat exchanger and the energy storage unit in a conducting manner.

4. The microgrid with liquid cooling heat dissipation according to claim 2, characterized in that: The second heat exchange device includes a photovoltaic liquid cooling control valve, a photovoltaic liquid cooling heat exchanger, a photovoltaic liquid cooling circulation pump, a photovoltaic liquid cooling inlet pipe, and a photovoltaic liquid cooling return pipe. The photovoltaic liquid cooling control valve is installed between the heat dissipation inlet pipe and the photovoltaic liquid cooling heat exchanger. The photovoltaic liquid cooling circulation pump is installed on the photovoltaic liquid cooling heat exchanger and is connected to the photovoltaic liquid cooling inlet pipe through a photovoltaic distributor. The end of the photovoltaic liquid cooling inlet pipe is connected to the photovoltaic inverter unit, and the photovoltaic liquid cooling return pipe is used to connect the photovoltaic liquid cooling heat exchanger and the photovoltaic unit in a conducting manner.

5. The microgrid with liquid cooling heat dissipation according to claim 2, wherein: The third heat exchange device includes a charging liquid cooling control valve, a charging liquid cooling heat exchanger, a charging liquid cooling circulation pump, a charging liquid cooling inlet pipe, and a charging liquid cooling return pipe. The charging liquid cooling control valve is installed between the heat dissipation inlet pipe and the charging liquid cooling heat exchanger. The charging liquid cooling circulation pump is installed on the charging liquid cooling heat exchanger and is connected to the charging liquid cooling inlet pipe through a charging distributor. The end of the charging liquid cooling inlet pipe is connected to the charging unit, and the charging liquid cooling return pipe is used to connect the charging liquid cooling heat exchanger and the charging unit in a conducting manner.

6. The microgrid with liquid cooling heat dissipation according to claim 3, characterized in that: The energy storage unit includes an energy storage PCS module and an energy storage battery PACK. Energy storage liquid cooling inlets and energy storage liquid cooling outlets for connecting the energy storage liquid cooling inlet pipe and the energy storage liquid cooling return pipe are provided on both the energy storage PCS module and the energy storage battery PACK.

7. The microgrid with liquid cooling heat dissipation according to claim 4, characterized in that: The photovoltaic inverter unit includes a photovoltaic inverter module. Photovoltaic liquid cooling inlets and photovoltaic liquid cooling outlets for connecting the photovoltaic liquid cooling inlet pipe and the photovoltaic liquid cooling return pipe are provided on the photovoltaic inverter module.

8. The microgrid with liquid cooling heat dissipation according to claim 5, characterized in that: The charging unit includes a liquid cooling charging gun and a charging module. Charging liquid cooling inlets and charging liquid cooling outlets for connecting the charging liquid cooling inlet pipe and the charging liquid cooling return pipe are provided on both the liquid cooling charging gun and the charging module.

9. A microgrid with liquid cooling heat dissipation according to any one of claims 1-8, characterized in that: The coolant is a water-based coolant or an oil-based coolant.

10. A microgrid with liquid cooling heat dissipation according to any one of claims 1-8, characterized in that: The control system is also electrically connected with a plurality of temperature control sensors and a plurality of pressure sensors for detecting the temperature and pressure of the coolant flowing to the heat dissipation circulation pipeline, the first heat exchange device, the second heat exchange device and the third heat exchange device.

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