A liquid cooling system for charging piles

Abstract

The present application relates to liquid cooling heat dissipation technical field, specifically propose a kind of liquid cooling cooling system of charging pile, comprising: liquid cooling part, transfer part and heat removal part;Liquid cooling part is set on power module, and it is provided with flow channel for fluid passing in it;Transfer part is provided with transfer cavity for fluid passing, and the water inlet of flow channel is communicated with transfer cavity, and the water outlet of flow channel and transfer cavity are connected in parallel with first channel and second channel;Heating assembly is provided in transfer cavity;Heat removal part is set on first channel;When the temperature of fluid is higher than first preset temperature, first channel opens, and second channel closes;When the temperature of fluid is lower than second preset temperature, second channel opens, and first channel closes.Overcome the problem of waiting for temperature to rise, avoid the temperature of power module too low and cannot normally start, improve cooling efficiency, also can avoid temperature too low, so as to maintain the temperature of power module in normal range, to ensure charging efficiency.

Description

Technical Field

[0001] This invention belongs to the field of liquid cooling technology, and specifically relates to a liquid cooling system for a charging pile. Background Technology

[0002] Currently, as the proportion of new energy vehicles in the automotive market increases year by year, the supporting equipment such as charging piles is also gradually developing. Among them, how to effectively ensure that the temperature of the charging pile is maintained within the normal range is one of the important indicators for measuring performance.

[0003] Existing charging stations typically achieve heat dissipation and temperature control by installing air-cooling or liquid-cooling structures near the heat-generating power modules. However, with the significant increase in charging power and speed, the corresponding power density and heat flux density have also increased substantially. This makes it highly susceptible to overheating in localized areas such as the power modules due to heat concentration. In such cases, simply installing air-cooling or liquid-cooling structures is insufficient to quickly cool the equipment and may even affect power density due to inadequate heat dissipation, thus impacting charging efficiency. While simultaneously using both air-cooling and liquid-cooling structures can cool the equipment, there is a high probability that the temperature of localized areas such as the power modules may become too low, preventing the equipment from starting normally. The waiting period for the temperature to rise will also affect charging efficiency. Summary of the Invention

[0004] To address the above problems, this invention proposes a liquid cooling system for charging piles, comprising:

[0005] A liquid cooling section is mounted on the power module, and the liquid cooling section is provided with a flow channel for fluid to pass through;

[0006] The transfer unit has a transfer chamber for fluid to pass through. The inlet of the flow channel is connected to the transfer chamber, and a first channel and a second channel are connected in parallel between the outlet of the flow channel and the transfer chamber.

[0007] A heating component is installed inside the transfer chamber;

[0008] A heat dissipation section is disposed on the first channel;

[0009] When the temperature of the fluid is higher than a first preset temperature, the first channel opens and the second channel closes.

[0010] When the temperature of the fluid is lower than the second preset temperature, the second channel is opened and the first channel is closed.

[0011] In some specific embodiments, the transfer unit includes:

[0012] The first water tank has a hollow interior forming the transfer cavity. The outlet of the first water tank is connected to the inlet of the flow channel. The first inlet of the first water tank is connected to the outlet of the flow channel through the first channel. The second inlet of the first water tank is connected to the outlet of the flow channel through the second channel.

[0013] The first water pump is located at the outlet of the first water tank.

[0014] In some specific embodiments, the heating assembly includes:

[0015] A thermometer, which is installed inside the transfer chamber, is used to detect the temperature of the fluid;

[0016] A heater, which is disposed within the transfer chamber, is used to heat the fluid.

[0017] In some specific embodiments, the heat dissipation section includes:

[0018] A heat exchanger having a heat exchange channel inside, the heat exchange channel being connected to the first channel;

[0019] The fan has its output end facing the heat exchange channel.

[0020] In some specific embodiments, a water channel is also provided inside the liquid cooling section;

[0021] The water intake channel is connected to the flow channel, and an overflow outlet is provided on one side of the water intake channel in the radial direction;

[0022] The water intake channel is equipped with a drainage mechanism that guides fluid into the water intake channel until it is discharged through the overflow outlet.

[0023] In some specific embodiments, the drainage mechanism includes:

[0024] A piston, which is slidably inserted into the water channel;

[0025] An electric motor, the output of which is connected to the piston, drives the piston to move axially along the water channel.

[0026] In some specific embodiments, a sealing ring is provided at one end of the water inlet channel near the flow channel for contacting the piston.

[0027] In some specific embodiments, the transfer unit further includes:

[0028] The second water tank has a hollow interior forming a cavity for storing fluid, and the third inlet of the first water tank is connected to the outlet of the second water tank.

[0029] The second water pump and the one-way valve are sequentially installed at the outlet of the second water tank.

[0030] In some specific embodiments, an air vent valve is provided between the outlet of the first water tank and the inlet of the flow channel.

[0031] In some specific embodiments, the fluid is characterized as an electronic cleaning agent.

[0032] Compared with existing technologies, the liquid cooling system of the charging pile of the present invention has at least the following advantages: A heat dissipation section and a transfer section are sequentially connected between the outlet and inlet of the flow channel via a first channel, forming a cooling cycle. This allows the fluid that has exchanged heat with the power module in the flow channel to discharge heat after reaching the heat dissipation section, and then re-enter the flow channel under the action of the transfer section to exchange heat with the power module, thereby achieving rapid cooling of the power module and preventing the power density from being affected by excessively high power module temperatures. Simultaneously, a transfer section is also connected between the outlet and inlet of the flow channel via a second channel, and a heating component is installed in the transfer section, forming a heating cycle. This allows the fluid that has exchanged heat with the power module in the flow channel to be heated by the heating component after reaching the transfer section, and then re-enter the flow channel under the action of the transfer section to exchange heat with the power module, thereby driving the power module to heat up. This overcomes the problem of waiting for the temperature to rise and avoids the inability to start normally due to excessively low power module temperatures. While improving cooling efficiency, it can also prevent the temperature from getting too low, thus maintaining the temperature of the power module within a normal range and ensuring charging efficiency.

[0033] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the liquid cooling system of the charging pile in an embodiment of the present invention is shown;

[0036] Figure 2 A schematic diagram of the liquid cooling section in an embodiment of the present invention is shown;

[0037] Figure 3A schematic diagram showing another state of the liquid cooling section in an embodiment of the present invention is shown.

[0038] In the diagram, 100 is the liquid cooling section; 110 is the flow channel; 120 is the water intake channel; 121 is the overflow port; 122 is the sealing ring; 130 is the drainage mechanism; 131 is the piston; 132 is the motor; 200 is the transfer section; 210 is the first water tank; 211 is the first water pump; 212 is the heater; 213 is the thermometer; 214 is the level gauge; 215 is the exhaust valve; 216 is the flow meter; 220 is the second water tank; 221 is the second water pump; 222 is the check valve; 300 is the heat dissipation section; 310 is the heat exchange chamber; 320 is the fan; 400 is the reversing valve; and 500 is the power module. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Reference Figure 1 This invention provides a liquid cooling system for a charging pile, comprising: a liquid cooling section 100, a transfer section 200, and a heat dissipation section 300. The liquid cooling section 100 is mounted on a power module 500 and has a flow channel 110 for fluid passage. The transfer section 200 has a transfer chamber for fluid passage; the inlet of the flow channel 110 communicates with the transfer chamber, and a first channel and a second channel are connected in parallel between the outlet of the flow channel 110 and the transfer chamber. A heating component is disposed within the transfer chamber. The heat dissipation section 300 is disposed on the first channel. When the fluid temperature is higher than a first preset temperature, the first channel opens and the second channel closes. When the fluid temperature is lower than the second preset temperature, the second channel opens and the first channel closes.

[0041] Specifically, a liquid cooling section 100 is mounted on the power module 500. The liquid cooling section 100 contains a flow channel 110, whose outlet, first channel, transfer section 200, and inlet are sequentially connected. A heat dissipation section 300 is mounted on the first channel, forming a cooling circulation path. The transfer section 200 firstly supplies fluid into the flow channel 110, allowing the fluid to exchange heat with the power module 500, thereby absorbing the heat generated during the operation of the power module 500. The fluid, after absorbing heat, then passes through the first channel... During the flow of fluid into the transfer chamber of the transfer unit 200, it passes through the heat dissipation unit 300. Under the action of the heat dissipation unit 300, the heat absorbed by the fluid is discharged to the outside, thereby completing heat dissipation. After flowing into the transfer chamber, it is transported back into the flow channel 110 under the action of the transfer unit 200 and exchanges heat with the power module 500 again, realizing cooling cycle and continuous heat dissipation and cooling of the power module 500, so as to achieve the purpose of rapid cooling of the power module 500, avoiding the power density being affected by the excessive temperature of the power module 500, and ensuring charging efficiency. Simultaneously, the outlet of flow channel 110, the second channel, the transfer unit 200, and the inlet of flow channel 110 are connected in sequence. The transfer chamber of transfer unit 200 is equipped with a heating component, thus forming a heating circulation path. The heating component in the transfer chamber of transfer unit 200 heats the fluid first, and under the action of transfer unit 200, the heated fluid is transported to flow channel 110, allowing the fluid transported to flow channel 110 to exchange heat with the power module 500, thereby transferring heat to the power module 500. This process completes the heating, and the fluid after heat transfer is directly transported to the transfer chamber of the transfer unit 200 through the second channel. Under the action of the heating component in the transfer chamber, it is reheated. After the fluid is heated, it is transported back into the flow channel 110 under the action of the transfer unit 200 and exchanges heat with the power module 500 again, realizing the heating cycle and continuous heating of the power module 500. This overcomes the problem of waiting for the temperature to rise and avoids the inability to start normally due to the low temperature of the power module 500, thus ensuring charging efficiency.

[0042] During the initial operation of the charging pile and its liquid cooling system, the temperature of the power module 500 is generally lower than the normal temperature range. At this time, the fluid temperature is also lower than the second preset temperature. To ensure the normal startup of the power module 500, the second channel is opened, the first channel is closed, the heat dissipation section 300 is closed, and the heating component is turned on, thus forming a heating circulation path. The heating component continuously heats the fluid, raising its temperature to at least the second preset temperature. This allows the heated fluid to exchange heat with the power module 500 upon reaching the flow channel 110, driving the power module 500 to rapidly heat up until its temperature reaches the normal temperature range. This prevents the power module 500 from failing to start due to excessively low temperature, ensuring charging efficiency. Once the power module 500 reaches the normal temperature range, the heating component is turned off, and heat exchange occurs solely between the fluid and the power module 500, thereby reducing energy loss. As the charging pile continues to operate, the temperature of the power module 500 continues to rise, which gradually drives the temperature of the fluid exchanging heat with the power module 500 to rise as well. This affects the cooling effect of the fluid on the power module 500. Under normal circumstances, when the temperature of the power module 500 exceeds the normal temperature range, the temperature of the fluid will also be higher than the first preset temperature. In order to ensure the safe operation of the charging pile, the first channel is opened, the second channel is closed, and the heat dissipation section 300 is opened, thus forming a cooling circulation path. The heat dissipation section 300 continuously discharges the heat of the fluid, cooling the temperature of the fluid to at least the first preset temperature. Then, the cooled fluid exchanges heat with the power module 500 after reaching the flow channel 110, driving the power module 500 to cool down rapidly until the temperature of the power module 500 reaches the normal temperature range. This avoids affecting the power density due to the excessive temperature of the power module 500 and ensures charging efficiency.

[0043] In some specific embodiments of the present invention, reference is made to... Figure 1 The transfer unit 200 includes a first water tank 210 and a first water pump 211. The first water tank 210 is hollow, forming a transfer cavity. The outlet of the first water tank 210 is connected to the inlet of the flow channel 110. The first inlet of the first water tank 210 is connected to the outlet of the flow channel 110 through a first channel, and the second inlet of the first water tank 210 is connected to the outlet of the flow channel 110 through a second channel. The first water pump 211 is located at the outlet of the first water tank 210.

[0044] Specifically, the first water tank 210 is hollow, forming a transfer chamber. When the charging pile is not charging, the fluid is stored in the transfer chamber, ensuring sufficient fluid capacity. An outlet is located on one side of the first water tank 210, and a first water pump 211 is positioned at the outlet, connecting the outlet of the first water tank 210 to the inlet of the flow channel 110 for fluid transport. A first inlet and a second inlet are located on the other side of the first water tank 210. A first channel is positioned between the outlet of the flow channel 110 and the first inlet of the first water tank 210, connecting the first inlet of the first water tank 210 to the outlet of the flow channel 110. A second channel is positioned between the outlet of the flow channel 110 and the second inlet of the first water tank 210, connecting the second inlet of the first water tank 210 to the outlet of the flow channel 110. When the first channel or the second channel is opened, the fluid in the flow channel 110 can be transported into the transfer chamber of the transfer unit 200, thereby ensuring the normal operation of the circulation.

[0045] Furthermore, a branch pipe is provided between the outlet of the flow channel 110 and the transfer unit 200. This branch pipe includes a main pipe and two branch pipes. One end of the main pipe is connected to the outlet of the flow channel 110, and the other end of the main pipe is equipped with a reversing valve 400. The two ends of one branch pipe are respectively connected to the reversing valve 400 and the first inlet of the first water tank 210, thereby forming a first channel. The two ends of the other branch pipe are respectively connected to the reversing valve 400 and the second inlet of the first water tank 210, thereby forming a second channel. The structure is simple and flexible, and the opening and closing of the first or second channel can be quickly completed by adjusting the reversing valve 400, making operation simple and convenient.

[0046] It should be noted that in actual use, multiple charging piles are installed, and each charging pile contains at least one power module 500. Therefore, there are multiple liquid cooling units 100, each corresponding to one power module 500. Each liquid cooling unit 100 is equipped with a flow channel 110. The inlets of the multiple flow channels 110 are connected to the inlet of the first water tank 210 through a manifold, and the outlets of the multiple flow channels 110 are connected to the main pipe through another manifold. This achieves parallel connection between the multiple liquid cooling units 100 and the flow channels 110 of the liquid cooling units 100, thereby enabling heat exchange and temperature control of the power modules 500 of multiple charging piles, reducing costs.

[0047] In some specific embodiments of the present invention, reference is made to... Figure 1 The heating assembly includes a thermometer 213 and a heater 212. The thermometer 213 is disposed within the transfer chamber and is used to detect the temperature of the fluid. The heater 212 is disposed within the transfer chamber and is used to heat the fluid.

[0048] Specifically, a thermometer 213 is installed inside the transfer chamber of the first water tank 210, which can detect the temperature of the fluid inside the transfer chamber. A heater 212 is also installed inside the transfer chamber of the first water tank 210, which can heat the fluid inside the transfer chamber.

[0049] Furthermore, thermometer 213 is electrically connected to the controller, enabling it to send the detected temperature data of the fluid in the transfer chamber to the controller. The controller is also electrically connected to the reversing valve 400, the heat dissipation section 300, and the heater 212, respectively, allowing it to send a reversing command to the reversing valve 400 and an opening or closing command to the heat dissipation section 300 and the heater 212 based on the received temperature data. When the temperature of the fluid in the transfer chamber detected by thermometer 213 is lower than the second preset temperature, the controller controls the reversing valve 400 to turn to the second channel, thereby opening the second channel, closing the first channel, and controlling the heat dissipation section 300 to close, while turning on the heating assembly, thus forming a heating circulation path. When the temperature of the fluid in the transfer chamber detected by thermometer 213 is between the first and second preset temperatures, the controller maintains the reversing valve 400 continuing to turn to the second channel, thereby keeping the second channel open and the first channel closed, and controlling the heating assembly to close. When the temperature of the fluid in the transfer chamber detected by the thermometer 213 is higher than the first preset temperature, the controller will control the reversing valve 400 to turn to the first channel, thereby closing the second channel, opening the first channel, and controlling the heat dissipation section 300 to open, thereby forming a cooling circulation path.

[0050] In some specific embodiments of the present invention, reference is made to... Figure 1 The heat dissipation section 300 includes a heat exchanger and a fan 320. The heat exchanger has heat exchange channels connected to the first channel. The output end of the fan 320 faces the heat exchange channels.

[0051] Specifically, the heat exchange channel of the heat exchanger is embedded in the branch pipe used to form the first channel, and the output end of the fan 320 is set towards the heat exchange channel, so that after the fluid flows into the heat exchange channel, the heat of the fluid can be blown to the outside by the fan 320. The structure is simple and flexible and easy to operate.

[0052] In some specific embodiments of the present invention, reference is made to... Figure 2 and Figure 3 The liquid cooling section 100 is also provided with a water inlet channel 120. The water inlet channel 120 is connected to the flow channel 110, and an overflow port 121 is provided on one side of the water inlet channel 120 in the radial direction. A drainage mechanism 130 is provided in the water inlet channel 120, which guides the fluid into the water inlet channel 120 until it is discharged through the overflow port 121.

[0053] Specifically, the liquid cooling section 100 has a water inlet channel 120 inside, which is arranged radially along and communicates with the flow channel 110. An overflow outlet 121 is provided on one side wall of the water inlet channel 120 in the radial direction, and the overflow outlet 121 is oriented towards the components of the power module 500. (Refer to...) Figure 2 The drainage mechanism 130 is installed inside the water inlet channel 120. The drainage mechanism 130 can block the water inlet channel 120 and its overflow outlet 121, thereby preventing fluid in the flow channel 110 from flowing into the water inlet channel 120 and being discharged through the overflow outlet 121. Simultaneously, referring to... Figure 3 The drainage mechanism 130 can also unblock the water inlet channel 120 and its overflow outlet 121, thereby allowing fluid in the flow channel 110 to be introduced into the water inlet channel 120 and discharged from the overflow outlet 121 towards the components of the power module 500. When the temperature of the power module 500 reaches a preset danger temperature or when the power module 500 catches fire, the drainage mechanism 130 can be driven to introduce fluid in the flow channel 110 into the water inlet channel 120 and discharge it from the overflow outlet 121 towards the components of the power module 500, thereby filling the power module 500 with fluid, directly cooling or even extinguishing the components inside the power module 500, ensuring safety and preventing greater danger.

[0054] Furthermore, the power module 500 is equipped with a fire detector and a temperature detector. The temperature detector can detect the temperature inside the power module 500, and the fire detector can determine whether a fire has occurred inside the power module 500. Both the fire detector and the temperature detector are electrically connected to the controller, and can send the detection results to the controller. The controller is electrically connected to the drainage mechanism 130, and can control the operation of the drainage mechanism 130 as needed.

[0055] In some specific embodiments of the present invention, reference is made to... Figure 2 and Figure 3 The drainage mechanism 130 includes a piston 131 and a motor 132. The piston 131 is slidably inserted into the water inlet channel 120. The output end of the motor 132 is connected to the piston 131 to drive the piston 131 to move axially along the water inlet channel 120.

[0056] Specifically, the piston 131 is slidably inserted into the water inlet channel 120 from the end of the water inlet channel 120 away from the flow channel 110, as shown in the reference. Figure 2 When the piston 131 moves axially along the water inlet channel 120 towards the flow channel 110 until the sidewall of the piston 131 completely overlaps and covers the overflow port 121, the sealing of the water inlet channel 120 and the overflow port 121 is completed. This prevents fluid in the flow channel 110 from flowing into the water inlet channel 120 and being discharged from the overflow port 121. (Refer to...) Figure 3When the piston 131 moves axially away from the flow channel 110 along the water inlet channel 120 until the sidewall of the piston 131 no longer completely overlaps and covers the overflow port 121, the overflow port 121, the water inlet channel 120, and the flow channel 110 can be connected in sequence, thereby releasing the blockage of the water inlet channel 120 and the overflow port 121. This allows fluid in the flow channel 110 to be introduced into the water inlet channel 120 and discharged from the overflow port 121 towards the components of the power module 500. The motor 132 is located at the end of the piston 131 away from the flow channel 110 and is fixedly connected to the water inlet channel 120. The output end of the motor 132 is connected to the piston 131, allowing the output end of the motor 132 to drive the piston 131 to move axially along the water inlet channel 120, thus facilitating the sealing or unsealing of the water inlet channel 120 and the overflow port 121.

[0057] In some specific embodiments of the present invention, reference is made to... Figure 2 and Figure 3 A sealing ring 122 is provided at one end of the water channel 120 near the flow channel 110 for contacting the piston 131.

[0058] Specifically, the sealing ring 122 is disposed at one end of the water inlet channel 120 near the flow channel 110, and the outer ring surface of the sealing ring 122 is fitted and fixedly connected to the inner ring surface of the water inlet channel 120, as shown in the figure. Figure 2 When the piston 131 moves axially along the water inlet channel 120 towards the flow channel 110, it eventually drives the end face of the piston 131 near the flow channel 110 to abut against the end face of the sealing ring 122 away from the flow channel 110, thereby improving the sealing performance of the piston 131 when blocking the water inlet channel 120 and the overflow port 121. Furthermore, referring to... Figure 3 When the piston 131 moves away from the flow channel 110 along the axial direction of the water inlet 120 until the side wall of the piston 131 no longer completely overlaps and covers the overflow port 121, the overflow port 121, the water inlet 120, the middle opening of the sealing ring 122 and the flow channel 110 are connected in sequence, and the fluid in the flow channel 110 is still guaranteed to be introduced into the water inlet 120 and discharged from the overflow port 121.

[0059] In some specific embodiments of the present invention, reference is made to... Figure 1 The transfer unit 200 also includes a second water tank 220, a second water pump 221, and a one-way valve 222. The second water tank 220 is hollow, forming a cavity for storing fluid. The third inlet of the first water tank 210 is connected to the outlet of the second water tank 220. The second water pump 221 and the one-way valve 222 are sequentially arranged at the outlet of the second water tank 220.

[0060] Specifically, the second water tank 220 is hollow, forming a cavity for storing fluid. An outlet is located on one side of the second water tank 220, and a third inlet is located on one side of the first water tank 210. A second water pump 221 and a one-way valve 222 are sequentially positioned at the outlet of the second water tank 220, connecting the outlet of the second water tank 220 to the third inlet of the first water tank 210 via the one-way valve 222 and the second water pump 221. As the liquid cooling system of the charging pile continues to operate, the circulating fluid will decrease due to leakage and evaporation. When the flow rate of the circulating fluid is less than a preset value, the second water pump 221 can transfer the fluid stored in the cavity of the second water tank 220 to the first water tank 210, ensuring a sufficient flow rate of circulating fluid and thus guaranteeing the heat exchange effect on the power module 500. Meanwhile, the one-way valve 222 prevents the fluid in the transfer chamber of the first water tank 210 from flowing back into the receiving chamber of the second water tank 220.

[0061] Furthermore, the one-way valve 222 is located between the outlet of the second water pump 221 and the second water tank 220. Even if the fluid in the transfer chamber of the first water tank 210 flows back into the receiving chamber of the second water tank 220, the one-way valve 222 can block the backflowing fluid and transport it back to the transfer chamber of the first water tank 210 through the second water pump 221.

[0062] Furthermore, a level gauge 214 is installed inside the transfer chamber of the first water tank 210, which can detect the liquid level of the fluid in the transfer chamber. The level gauge 214 is electrically connected to a controller, capable of sending liquid level data to the controller. The controller is connected to the second water pump 221, thereby controlling the operation of the second water pump 221 based on the received liquid level data. When the liquid level of the fluid in the transfer chamber is lower than a preset height, the controller's judgment module determines that the flow rate of the circulating fluid is insufficient, and thus controls the second water pump 221 to operate, thereby replenishing the fluid.

[0063] In some specific embodiments of the present invention, reference is made to... Figure 1 An air vent valve 215 is provided between the outlet of the first water tank 210 and the inlet of the flow channel 110. Specifically, the air vent valve 215 is located between the first water pump 211 and the inlet of the flow channel 110, and can discharge air in the path during the fluid circulation process to avoid affecting the heat exchange effect with the power module 500.

[0064] Furthermore, a flow meter 216 is installed between the exhaust valve 215 and the inlet of the flow channel 110. The flow meter 216 can detect the flow rate of the circulating fluid in order to monitor and control the flow of the fluid, and can provide auxiliary reference for whether fluid needs to be replenished.

[0065] In some specific embodiments of the present invention, the fluid is an electronic cleaning agent.

[0066] Specifically, the fluid is a fluorinated liquid or other electronic cleaning agents with similar properties. Due to its good chemical inertness, electrical insulation, thermal conductivity, and unique low surface tension, it will not cause damage to precision electronic instruments and equipment when it comes into contact with them. Therefore, when the power module 500 is too hot or catches fire, the fluid can be continuously supplied to the components of the power module 500 through the overflow port 121 until the power module 500 is completely filled with fluid. This ensures that all components of the power module 500 are completely immersed in the fluid, which can greatly improve cooling efficiency and ensure safety while avoiding damage to the power module 500.

[0067] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid cooling system for a charging pile, characterized in that, include: A liquid cooling section (100) is disposed on the power module (500), and the liquid cooling section (100) is provided with a flow channel (110) for fluid to pass through; The transfer unit (200) is provided with a transfer chamber for fluid to pass through. The inlet of the flow channel (110) is connected to the transfer chamber, and a first channel and a second channel are provided in parallel between the outlet of the flow channel (110) and the transfer chamber. A heating component is installed inside the transfer chamber; A heat dissipation section (300) is disposed on the first channel; When the temperature of the fluid is higher than a first preset temperature, the first channel opens and the second channel closes. When the temperature of the fluid is lower than the second preset temperature, the second channel opens and the first channel closes. The liquid cooling section (100) is also provided with a water channel (120); The water intake channel (120) is connected to the flow channel (110), and an overflow outlet (121) is provided on one side of the water intake channel (120) in the radial direction; The water intake channel (120) is provided with a drainage mechanism (130), which guides fluid into the water intake channel (120) until it is discharged through the overflow port (121); The drainage mechanism (130) includes: Piston (131), which is slidably inserted into the water channel (120); An electric motor (132) is connected to the piston (131) at its output end to drive the piston (131) to move axially along the water channel (120).

2. The liquid cooling system for the charging pile according to claim 1, characterized in that, The transfer unit (200) includes: The first water tank (210) is hollow inside to form the transfer cavity. The outlet of the first water tank (210) is connected to the inlet of the flow channel (110). The first inlet of the first water tank (210) is connected to the outlet of the flow channel (110) through the first channel. The second inlet of the first water tank (210) is connected to the outlet of the flow channel (110) through the second channel. The first water pump (211) is located at the outlet of the first water tank (210).

3. The liquid cooling system for the charging pile according to claim 1, characterized in that, The heating component includes: A thermometer (213) is disposed in the transfer chamber for detecting the temperature of the fluid; A heater (212) is disposed within the transfer chamber for heating the fluid.

4. The liquid cooling system for the charging pile according to claim 1, characterized in that, The heat dissipation section (300) includes: A heat exchanger having a heat exchange channel inside, the heat exchange channel being connected to the first channel; A fan (320) is positioned with its output end facing the heat exchange channel.

5. The liquid cooling system for the charging pile according to claim 1, characterized in that, A sealing ring (122) is provided at one end of the water channel (120) near the flow channel (110) for contacting the piston (131).

6. The liquid cooling system for the charging pile according to claim 2, characterized in that, The transfer unit (200) also includes: The second water tank (220) is hollow inside to form a cavity for storing fluid, and the third water inlet of the first water tank (210) is connected to the water outlet of the second water tank (220). The second water pump (221) and the one-way valve (222) are sequentially installed at the outlet of the second water tank (220).

7. The liquid cooling system for the charging pile according to claim 2, characterized in that, An air vent valve (215) is provided between the outlet of the first water tank (210) and the inlet of the flow channel (110).

8. The liquid cooling system for a charging pile according to any one of claims 1 to 7, characterized in that, The fluid is an electronic cleaning agent.

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