Liquid-cooled charging pile

Abstract

A liquid-cooled charging pile, wherein a charging cable (4) of the liquid-cooled charging pile comprises a first cooling tube (41) and a second cooling tube (42), the first cooling tube (41) and the second cooling tube (42) respectively accommodate a positive conductor (43) and a negative conductor (44). The liquid-cooled charging pile alternately operates between a first mode and a second mode. In the first mode, the coolant in the first cooling tube (41) circulates, and the coolant in the second cooling tube (42) is enclosed within the second cooling tube (42). In the second mode, the coolant in the second cooling tube (42) circulates, and the coolant in the first cooling tube (41) is enclosed within the first cooling tube (41). The liquid-cooled charging pile achieves heat dissipation of the entire charging cable by alternately operating between the first mode and the second mode. In addition, since there is no risk of conduction between the positive conductor and the negative conductor by means of the coolant, the liquid-cooled charging pile does not need to be provided with a deionizer and a conductivity sensor, thereby reducing the complexity of the liquid-cooled charging pile, lowering costs and failure rates, and decreasing the maintenance requirements of the liquid-cooled charging pile.

Description

Liquid-cooled charging pile

[0001] This application claims priority to Chinese patent application No. 202411768057.6, filed on November 30, 2024, entitled "Liquid-cooled charging pile", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of charging technology, and in particular to a liquid-cooled charging pile. Background Technology

[0003] Charging stations charge vehicles and other devices via charging cables. During charging, these cables generate a significant amount of heat. Current heat dissipation solutions for charging cables include water-immersion liquid cooling technology. In this technology, the charging cable includes cooling pipes filled with coolant that also houses the wires. The wires and coolant are in direct contact, eliminating any intermediate thermal resistance and resulting in high heat dissipation capacity.

[0004] In water-immersion liquid cooling systems, the positive and negative conductors may be connected by the coolant. To meet insulation requirements, the coolant's conductivity must be maintained at a low level over a long period. However, the coolant's conductivity tends to increase over time because it readily absorbs ions from metals and other sources. This necessitates the use of a deionizer to remove ions from the coolant and a conductivity sensor to monitor its conductivity.

[0005] However, the installation of deionizers and conductivity sensors increases the complexity of charging stations, leading to higher costs and failure rates, as well as increased maintenance requirements. Summary of the Invention

[0006] This application provides a liquid-cooled charging pile. The positive and negative wires of the liquid-cooled charging pile are not connected by coolant. The technical solution of the liquid-cooled charging pile is described below.

[0007] This application provides a liquid-cooled charging pile. The liquid-cooled charging pile includes a charging pile body and a charging cable. The charging pile body includes a liquid cooling source, which includes a supply port and a return port. The charging cable includes a first cooling pipe and a second cooling pipe, which are used to accommodate the positive electrode wire and the negative electrode wire, respectively. The liquid-cooled charging pile is used to alternately operate in a first mode and a second mode. In the first mode, the supply port, the first cooling pipe, and the return port are connected, and the two ends of the second cooling pipe are separated from the supply port and the return port, respectively. In the second mode, the supply port, the second cooling pipe, and the return port are connected, and the two ends of the first cooling pipe are separated from the supply port and the return port, respectively.

[0008] In the first mode of the technical solution provided in this application, the coolant in the first cooling pipe where the positive electrode wire is located circulates, so the heat of the positive electrode wire is continuously carried away by the coolant, thus achieving heat dissipation of the positive electrode wire. Furthermore, since the two ends of the second cooling pipe are separated from the supply port and the return port respectively, the coolant in the second cooling pipe is sealed in the second cooling pipe, and there is no connection between the negative electrode wire and the positive electrode wire in the second cooling pipe through the coolant.

[0009] In the second mode, the coolant in the second cooling pipe where the negative electrode wire is located circulates, so the heat of the negative electrode wire is continuously carried away by the coolant, thus achieving heat dissipation of the negative electrode wire. Furthermore, since the two ends of the first cooling pipe are separated from the supply port and the return port respectively, the coolant in the first cooling pipe is sealed in the first cooling pipe, and there is no connection between the positive electrode wire and the negative electrode wire in the first cooling pipe through the coolant.

[0010] In summary, liquid-cooled charging stations achieve heat dissipation for the entire charging cable by alternating between first and second modes. Furthermore, since there is no risk of continuity between the positive and negative wires via the coolant, liquid-cooled charging stations do not require deionizers or conductivity sensors, reducing complexity, cost, and failure rate, and minimizing maintenance requirements.

[0011] In one implementation, the liquid-cooled charging pile further includes a shunt component and a merging component. The shunt component includes a common liquid inlet, a first liquid outlet, and a second liquid outlet. The merging component includes a first liquid inlet, a second liquid inlet, and a common liquid outlet. The common liquid inlet is connected to the liquid supply port, and the first and second liquid outlets are respectively connected to the liquid inlets of the first and second cooling pipes. The liquid outlets of the first and second cooling pipes are respectively connected to the first and second liquid inlets, and the common liquid outlet is connected to the return port.

[0012] In the first configuration, the common inlet, the first outlet, the first cooling pipe, and the common outlet are sequentially connected. This allows the coolant in the first cooling pipe, where the positive electrode wire is located, to circulate, continuously carrying away heat from the positive electrode wire and achieving heat dissipation. Furthermore, the inlet of the second cooling pipe is separated from the common inlet, and the outlet of the second cooling pipe is also separated from the common outlet. This confines the coolant within the second cooling pipe, preventing any connection between the negative and positive electrode wires through the coolant.

[0013] In the second configuration, the common inlet, the second outlet, the second cooling pipe, the second inlet, and the common outlet are sequentially connected. This allows the coolant in the second cooling pipe, where the negative electrode wire is located, to circulate, continuously carrying away heat from the negative electrode wire and achieving heat dissipation. Furthermore, the inlet of the first cooling pipe is separated from the common inlet, and the outlet of the first cooling pipe is also separated from the common outlet. This confines the coolant within the first cooling pipe, preventing any connection between the positive and negative electrode wires through the coolant.

[0014] In one implementation, the diverting component includes a first three-way valve, which connects the common inlet to the first outlet and separates the common inlet from the second outlet; or connects the common inlet to the second outlet and separates the common inlet from the first outlet. The merging component includes a second three-way valve, which connects the common outlet to the first inlet and separates the common outlet from the second inlet; or connects the common outlet to the second inlet and separates the common outlet from the first inlet. By using three-way valves for both the diverting and merging components, their implementation is simplified, reducing costs and improving reliability.

[0015] In one implementation, the diversion component includes a diversion box and a first separator. The diversion box includes a common inlet, a first outlet, and a second outlet. The first separator is located inside the diversion box and is movable such that one of the first outlet and the second outlet is connected to the common inlet, while the other is separated from the common inlet. The merging component includes a merging box and a second separator. The merging box includes a first inlet, a second inlet, and a common outlet. The second separator is located inside the merging box and is movable such that one of the first inlet and the second inlet is connected to the common outlet, while the other is separated from the common outlet.

[0016] In the first configuration, a common inlet is connected to a first outlet and separated from a second outlet. Conversely, a common outlet is connected to a first inlet and separated from a second inlet. This establishes a connection between the common inlet, the first outlet, the first cooling pipe, and the common outlet, allowing coolant circulation within the first cooling pipe. The inlet (or outlet) of the second cooling pipe is separated from the common inlet, and the outlet (or inlet) of the second cooling pipe is also separated from the common outlet, confining the coolant within the second cooling pipe. Consequently, the coolant in the second cooling pipe cannot come into contact with the coolant in the first cooling pipe.

[0017] In the second mode, the common inlet is connected to the second outlet and is separated from the first outlet. The common outlet is connected to the second inlet and is separated from the first inlet. Thus, the common inlet, the second outlet, the second cooling pipe, and the common outlet are interconnected, allowing the coolant in the second cooling pipe to circulate. The inlet (or outlet) of the first cooling pipe is separated from the common inlet, and the outlet (or inlet) of the first cooling pipe is separated from the common outlet, confining the coolant in the first cooling pipe. Therefore, the coolant in the first cooling pipe cannot come into contact with the coolant in the second cooling pipe.

[0018] In one implementation, a first partition divides the interior of the diverter box into a first chamber and a second chamber, which are respectively connected to a first liquid outlet and a second liquid outlet. The first partition is movable such that one of the first and second chambers is connected to a common liquid inlet, while the other is separated from the common liquid inlet. A second partition divides the interior of the merging box into a third chamber and a fourth chamber, which are respectively connected to a first liquid inlet and a second liquid inlet. The second partition is movable such that one of the third and fourth chambers is connected to a common liquid outlet, while the other is separated from the common liquid outlet.

[0019] In the first configuration, a common inlet connects to the first chamber and is separated from the second chamber. A common outlet connects to the third chamber and is separated from the fourth chamber. Thus, the common inlet, the first chamber, the first outlet, the first cooling pipe, the first inlet, the third chamber, and the common outlet are interconnected, allowing the coolant in the first cooling pipe to circulate. The inlet (or outlet) of the second cooling pipe is separated from the common inlet by a first separator, and the outlet (or inlet) of the second cooling pipe is separated from the common outlet by a second separator. The coolant in the second cooling pipe is confined within the second cooling pipe, or confined between the first and second separators. Therefore, the coolant in the second cooling pipe cannot come into contact with the coolant in the first cooling pipe.

[0020] In the second configuration, the common inlet connects to the second chamber and is separated from the first chamber. The common outlet connects to the fourth chamber and is separated from the third chamber. Thus, the common inlet, second chamber, second outlet, second cooling pipe, second inlet, fourth chamber, and common outlet are interconnected, allowing coolant circulation in the second cooling pipe. The inlet (or outlet) of the first cooling pipe is separated from the common inlet by a first separator, and the outlet (or inlet) of the first cooling pipe is separated from the common outlet by a second separator. The coolant in the first cooling pipe is confined within the first cooling pipe, or confined between the first and second separators. Therefore, the coolant in the first cooling pipe cannot come into contact with the coolant in the second cooling pipe.

[0021] In one implementation, the diverter further includes a first buffer and a second buffer. The first buffer is located in the first chamber and is configured to contract when the first chamber shrinks and expand when the first chamber expands. The second buffer is located in the second chamber and is configured to contract when the second chamber shrinks and expand when the second chamber expands.

[0022] The technical solution provided in this application addresses the issue that when the first chamber shrinks and the second chamber expands, the pressure in the first chamber increases while the pressure in the second chamber decreases. This means the first partition needs to overcome an increasingly larger pressure difference to continue shrinking the first chamber. By contracting the first buffer in the first chamber, the pressure in that chamber decreases; conversely, by expanding the second buffer in the second chamber, the pressure in that chamber increases. This brings the pressure on both sides of the first partition closer to uniformity, preventing the first partition from being unable to move smoothly due to the pressure difference.

[0023] Similarly, when the first chamber expands and the second chamber shrinks, the pressure in the first chamber decreases while the pressure in the second chamber increases. This means the pressure difference the first separator needs to overcome becomes increasingly greater in order to continue shrinking the second chamber. By expanding the first buffer in the first chamber, the pressure in that chamber increases; conversely, by contracting the second buffer in the second chamber, the pressure in that chamber decreases. This brings the pressure on both sides of the first separator closer to uniformity, preventing the first separator from being unable to move smoothly due to the pressure difference.

[0024] In one implementation, the merging element further includes a third buffer and a fourth buffer. The third buffer is located in the third chamber and is used to contract when the third chamber shrinks and expand when the third chamber expands. The fourth buffer is located in the fourth chamber and is used to contract when the fourth chamber shrinks and expand when the fourth chamber expands.

[0025] The technical solution provided in this application addresses the issue that when the third chamber shrinks and the fourth chamber expands, the pressure in the third chamber increases while the pressure in the fourth chamber decreases. This means the second partition needs to overcome an increasingly larger pressure difference to continue reducing the size of the third chamber. By contracting the third buffer in the third chamber, the pressure in that chamber decreases; conversely, by expanding the fourth buffer in the fourth chamber, the pressure in that chamber increases. This brings the pressure on both sides of the second partition closer to uniformity, preventing the second partition from failing to move smoothly due to the pressure difference.

[0026] Similarly, when the third chamber expands and the fourth chamber shrinks, the pressure in the third chamber decreases while the pressure in the fourth chamber increases. This means the second partition needs to overcome an increasingly larger pressure difference to continue shrinking the fourth chamber. By expanding the third buffer in the third chamber, the pressure in that chamber increases; conversely, by contracting the fourth buffer in the fourth chamber, the pressure in that chamber decreases. This brings the pressure on both sides of the second partition closer to uniformity, preventing the second partition from being unable to move smoothly due to the pressure difference.

[0027] In one implementation, the first, second, third, and fourth buffers are airbags, which expand by inflating and contract by deflating.

[0028] In one implementation, the first partition includes a fifth chamber connected to a common inlet. The first partition is movable such that one of a first outlet and a second outlet is connected to the fifth chamber, while the other is separated from the fifth chamber. The second partition includes a sixth chamber connected to the common outlet. The second partition is movable such that one of the first inlet and the second inlet is connected to the sixth chamber, while the other is separated from the sixth chamber.

[0029] In the first configuration, the fifth chamber is connected to the first liquid outlet and separated from the second liquid outlet. The sixth chamber is connected to the first liquid inlet and separated from the second liquid inlet. Thus, the common liquid inlet, the fifth chamber, the first liquid outlet, the first cooling pipe, the first liquid inlet, the sixth chamber, and the common liquid outlet are interconnected, allowing the coolant in the first cooling pipe to circulate. The inlet (or outlet) of the second cooling pipe is separated from the common liquid inlet, and the outlet (or inlet) of the second cooling pipe is separated from the common liquid outlet, confining the coolant in the second cooling pipe. Consequently, the coolant in the second cooling pipe cannot come into contact with the coolant in the first cooling pipe.

[0030] In the second configuration, the fifth chamber is connected to the second liquid outlet and separated from the first liquid outlet. The sixth chamber is connected to the second liquid inlet and separated from the first liquid inlet. Thus, the common liquid inlet, the fifth chamber, the second liquid outlet, the second cooling pipe, the second liquid inlet, the sixth chamber, and the common liquid outlet are interconnected, allowing the coolant in the second cooling pipe to circulate. The liquid inlet (or first liquid outlet) of the first cooling pipe is separated from the common liquid inlet, and the liquid outlet (or first liquid inlet) of the first cooling pipe is separated from the common liquid outlet, confining the coolant in the first cooling pipe. Consequently, the coolant in the first cooling pipe cannot come into contact with the coolant in the second cooling pipe.

[0031] The technical solution provided in this application, by setting the first and second partitions to have a fifth and a sixth chamber, ensures that the first and second partitions are not affected by pressure difference during movement, thus making the movement of the first and second partitions smoother.

[0032] In one implementation, the liquid-cooled charging station further includes a charging gun, a first liquid inlet pipe, a second liquid inlet pipe, a first liquid cooling component, and a second liquid cooling component. The inlet of the first liquid inlet pipe is connected to a first liquid outlet, and the outlet of the first liquid inlet pipe is connected to the inlet of a first cooling pipe via the first liquid cooling component. The inlet of the second liquid inlet pipe is connected to a second liquid outlet, and the outlet of the second liquid inlet pipe is connected to the inlet of a second cooling pipe via the second liquid cooling component. The charging gun is connected to the end of the charging cable furthest from the charging station body, and the first and second liquid cooling components are used to cool the terminals of the charging gun.

[0033] In one implementation, the first separator is slidably or rotatably connected to the separator box. The second separator is slidably or rotatably connected to the merging box.

[0034] In one implementation, the coolant is a water-based coolant. Water-based coolants have favorable thermodynamic properties, which is beneficial for improving the heat dissipation of the liquid-cooled charging pile. The positive and negative electrode wires are bare wires.

[0035] In one implementation, the liquid-cooled charging pile further includes a first valve, a second valve, a third valve, and a fourth valve. The first valve is located between the liquid inlet and the first liquid outlet of the first cooling pipe, and the second valve is located between the liquid outlet and the first liquid inlet of the first cooling pipe. The third valve is located between the liquid inlet and the second liquid outlet of the second cooling pipe, and the fourth valve is located between the liquid outlet and the second liquid inlet of the second cooling pipe.

[0036] In the first mode, the first and second valves are open. This connects the common inlet, the first outlet, the first cooling pipe, and the common outlet, allowing the coolant in the first cooling pipe to circulate. The third and fourth valves are closed. This confines the coolant in the second cooling pipe between the third and fourth valves, preventing it from contacting the coolant in the first cooling pipe.

[0037] In the second mode, the third and fourth valves are open. This connects the common inlet, the second outlet, the second cooling pipe, and the common outlet, allowing coolant to circulate in the second cooling pipe. The first and second valves are closed. This seals the coolant in the first cooling pipe between the first and third valves, preventing it from contacting the coolant in the second cooling pipe.

[0038] In one implementation, the liquid-cooled charging pile further includes a charging gun, a first liquid inlet pipe, a second liquid inlet pipe, a first liquid cooling component, and a second liquid cooling component. The inlet of the first liquid inlet pipe is connected to a first liquid outlet, and the outlet of the first liquid inlet pipe is connected to the inlet of a first cooling pipe via the first liquid cooling component. The inlet of the second liquid inlet pipe is connected to a second liquid outlet, and the outlet of the second liquid inlet pipe is connected to the inlet of a second cooling pipe via the second liquid cooling component. The charging gun is connected to the end of the charging cable furthest from the charging pile body. The first and second liquid cooling components are used to cool the terminals of the charging gun. A first valve is located between the inlet and the first outlet of the first liquid inlet pipe, or between the outlet of the first liquid inlet pipe and the inlet of the first cooling pipe. A third valve is located between the inlet and the second outlet of the second liquid inlet pipe, or between the outlet of the second liquid inlet pipe and the inlet of the second cooling pipe.

[0039] In one implementation, the liquid coolant source has a first liquid supply port and a second liquid supply port. The liquid coolant source also has a first liquid return port and a second liquid return port. The first liquid supply port and the second liquid supply port are respectively connected to the liquid inlet of the first cooling pipe and the liquid inlet of the second cooling pipe, and the first liquid return port and the second liquid return port are respectively connected to the liquid outlet of the first cooling pipe and the liquid outlet of the second cooling pipe.

[0040] In the first configuration, the first supply port, the first cooling pipe, and the first return port are connected. This allows the coolant in the first cooling pipe to circulate, continuously carrying away heat from the positive electrode wire and achieving heat dissipation. Furthermore, the inlet of the second cooling pipe is separated from the second supply port, and the outlet of the second cooling pipe is separated from the second return port. This seals off the coolant in the second cooling pipe, preventing it from contacting the coolant in the first cooling pipe, thus preventing any connection between the negative electrode wire and the positive electrode wire in the first cooling pipe via coolant.

[0041] In the second mode, the second supply port, the second cooling pipe, and the second return port are connected. This allows the coolant in the second cooling pipe to circulate, continuously carrying away heat from the negative electrode wire, thus achieving heat dissipation. Furthermore, the inlet of the first cooling pipe is separated from the first supply port, and the outlet of the first cooling pipe is separated from the first return port. This seals off the coolant in the first cooling pipe, preventing it from contacting the coolant in the second cooling pipe, thus preventing any connection between the positive electrode wire and the negative electrode wire in the second cooling pipe via coolant.

[0042] In one implementation, the liquid-cooled charging pile further includes a first valve, a second valve, a third valve, and a fourth valve. The first valve is located between the first liquid supply port and the liquid inlet of the first cooling pipe, and the second valve is located between the first liquid return port and the liquid outlet of the first cooling pipe. The third valve is located between the second liquid supply port and the liquid inlet of the second cooling pipe, and the fourth valve is located between the second liquid return port and the liquid outlet of the second cooling pipe.

[0043] In the first mode, when the first and second valves are open, the first supply port, the first cooling pipe, and the first return port are connected. When the third and fourth valves are closed, the coolant in the second cooling pipe is sealed between the third and fourth valves, preventing the coolant in the second cooling pipe from contacting the coolant in the first cooling pipe. Therefore, the positive and negative wires will not be connected by coolant.

[0044] In the second mode, when the third and fourth valves are open, the second supply port, the second cooling pipe, and the second return port are connected. When the first and second valves are closed, the coolant in the first cooling pipe is sealed between the first and second valves, preventing the coolant in the first cooling pipe from contacting the coolant in the second cooling pipe. Therefore, the positive and negative wires will not be connected by coolant.

[0045] In one implementation, the liquid-cooled charging pile further includes a charging gun, a first liquid inlet pipe, a second liquid inlet pipe, a first liquid cooling component, and a second liquid cooling component. The inlet of the first liquid inlet pipe is connected to a first liquid supply port, and the outlet of the first liquid inlet pipe is connected to the inlet of a first cooling pipe via the first liquid cooling component. The inlet of the second liquid inlet pipe is connected to a second liquid supply port, and the outlet of the second liquid inlet pipe is connected to the inlet of a second cooling pipe via the second liquid cooling component. The charging gun is connected to the end of the charging cable furthest from the charging pile body. The first and second liquid cooling components are used to cool the terminals of the charging gun. A first valve is located between the inlet of the first liquid inlet pipe and the first liquid supply port, or between the outlet of the first liquid inlet pipe and the inlet of the first cooling pipe. A third valve is located between the inlet of the second liquid inlet pipe and the second liquid supply port, or between the outlet of the second liquid inlet pipe and the inlet of the second cooling pipe. Attached Figure Description

[0046] Figure 1 is a schematic diagram of an application scenario of a charging pile provided in an embodiment of this application;

[0047] Figure 2 is a schematic diagram of the liquid cooling circulation of the coolant in a liquid-cooled charging pile in the related technology;

[0048] Figure 3 is a schematic diagram of the end of a charging cable away from the charging gun provided in an embodiment of this application;

[0049] Figure 4 is a schematic diagram of the conductive circuit of the positive and negative wires of a liquid-cooled charging pile in the related technology;

[0050] Figure 5 is a schematic diagram of a first mode and a second mode of a liquid-cooled charging pile provided in an embodiment of this application;

[0051] Figure 6 is a schematic diagram of a first mode and a second mode of another liquid-cooled charging pile provided in the embodiments of this application;

[0052] Figure 7 is a schematic diagram of a diverter or merging component provided in an embodiment of this application;

[0053] Figure 8 is a schematic diagram of another diverter or merging component provided in an embodiment of this application;

[0054] Figure 9 is a schematic diagram of another diverter or merging component provided in an embodiment of this application;

[0055] Figure 10 is a schematic diagram of a first mode and a second mode of another liquid-cooled charging pile provided in the embodiments of this application;

[0056] Figure 11 is a schematic diagram of a first partition or a second partition provided in an embodiment of this application;

[0057] Figure 12 is a schematic diagram of a first mode and a second mode of another liquid-cooled charging pile provided in the embodiments of this application;

[0058] Figure 13 is a schematic diagram of a first mode and a second mode of another liquid-cooled charging pile provided in the embodiments of this application;

[0059] Figure 14 is a schematic diagram of a first mode and a second mode of another liquid-cooled charging pile provided in the embodiments of this application;

[0060] Figure 15 is a schematic diagram of the first and second modes of another liquid-cooled charging pile provided in the embodiments of this application.

[0061] Legend: 1. Charging pile body, 10. Liquid cooling source, 11. Water pump, 12. Heat exchanger, 13. Water tank; 2. Diverter, 201. Common liquid inlet, 202. First liquid outlet, 203. Second liquid outlet, 21. Diverter box, 211. First chamber, 212. Second chamber, 22. First partition, 221. Fifth chamber, 23. First buffer, 24. Second buffer; 3. Merging component, 301. First liquid inlet, 302. Second liquid inlet, 303. Common liquid outlet, 31. Merging box, 311. Third chamber, 312. Fourth chamber, 32. Second partition, 321. Sixth chamber, 33. Third buffer, 34. Fourth buffer; 4. Charging cable; 40. Charging gun; 41. First cooling pipe; 42. Second cooling pipe; 43. Positive wire; 44. Negative wire; 45. First liquid inlet pipe; 46. Second liquid inlet pipe; 47. First liquid cooling assembly; 48. Second liquid cooling assembly; 5. First valve; 6. Second valve; 7. Third valve; 8. Fourth valve. Detailed Implementation

[0062] Figure 1 illustrates a schematic diagram of a charging pile application scenario. As shown in Figure 1, the charging pile charges vehicles and other devices via a charging cable 4. One end of the charging cable 4 is equipped with a charging gun 40, which is plugged into a socket in the vehicle. During the charging process, the charging cable 4 generates a significant amount of heat.

[0063] Currently, heat dissipation solutions for charging cables include natural cooling, air cooling, indirect liquid cooling, and immersion liquid cooling. Among these, liquid cooling (including indirect liquid cooling and immersion liquid cooling) has significantly stronger heat dissipation capabilities than natural cooling and air cooling. In the two liquid cooling methods, indirect liquid cooling has higher thermal resistance due to the insulation layer and conduit between the cable and the coolant. Immersion liquid cooling, on the other hand, eliminates all intermediate thermal resistance through direct contact between the cable (or conductor) and the coolant, resulting in stronger heat dissipation capabilities than indirect liquid cooling. Furthermore, for immersion liquid cooling, there are three technical routes: water-based working fluid (usually deionized water + alcohol), oil, and fluorinated liquid. Among these, oil and fluorinated liquid have relatively poor thermodynamic and physical properties, and their heat dissipation capabilities are not as good as immersion liquid cooling solutions using water-based working fluids (hereinafter referred to as water immersion). Therefore, water immersion liquid cooling technology is currently one of the most superior heat dissipation solutions for high-current charging cables such as charging piles.

[0064] In water-immersion liquid cooling technology, the cables (bare conductors) are in direct contact with the coolant, so there is a risk of continuity between the positive and negative conductors of the charging cable through the coolant (the specific conduction principle will be explained below). To meet the system's insulation requirements and hydrogen safety, the coolant's conductivity must be maintained at a low level over a long period. However, the conductivity of water-based working fluids tends to increase over time because they readily absorb ions from metals and other sources. Related technologies use deionizers to remove ions from the coolant and conductivity sensors to monitor the coolant's conductivity. However, this increases the complexity of liquid-cooled charging stations, leading to increased costs and failure rates. Furthermore, deionizers need to be replaced periodically, increasing the system's maintenance requirements.

[0065] The principle of the positive and negative wires of a liquid-cooled charging pile being connected by coolant will be explained below with reference to Figures 2-4. Figure 2 shows a schematic diagram of the coolant circulation loop of a liquid-cooled charging pile in the related technology. Figure 3 shows a schematic diagram of the end of the charging cable 4 away from the charging gun 40. As shown in Figure 2, the liquid-cooled charging pile includes a charging pile body 1, a shunt box 21, a merging box 31, and a charging cable 4. The charging pile body 1 includes a liquid cooling source 10, which includes a supply port and a return port. The shunt box 21 and the merging box 31 can also be considered as a three-way pipe. The shunt box 21 includes a common inlet 201, a first outlet 202, and a second outlet 203. The merging box 31 includes a first inlet 301, a second inlet 302, and a common outlet 303.

[0066] As shown in Figure 3, the charging cable 4 includes a first cooling pipe 41, a second cooling pipe 42, a first liquid inlet pipe 45, and a second liquid inlet pipe 46. The first cooling pipe 41 can also be referred to as the first liquid return pipe, and the second cooling pipe 42 can also be referred to as the second liquid return pipe. As shown in Figures 2 and 3, the first cooling pipe 41 is used to accommodate the positive electrode wire 43. One end of the first liquid inlet pipe 45 and one end of the first cooling pipe 41 are connected inside the charging gun 40. The second cooling pipe 42 is used to accommodate the negative electrode wire 44. One end of the second liquid inlet pipe 46 and one end of the second cooling pipe 42 are connected inside the charging gun 40.

[0067] As shown in Figure 2, the supply port of the liquid coolant source 10 is connected to the common inlet 201 of the distribution box 21, and supplies coolant into the distribution box 21. The coolant inside the distribution box 21 is divided into two paths, which are respectively supplied to the first inlet pipe 45 and the second inlet pipe 46 through the first outlet 202 and the second outlet 203. The coolant in the first inlet pipe 45 and the second inlet pipe 46 flows to the first cooling pipe 41 and the second cooling pipe 42. The coolant in the first cooling pipe 41 and the second cooling pipe 42 flows into the interior of the confluence box 31 through the first inlet 301 and the second inlet 302, respectively. The confluence box 31 supplies coolant to the return port of the liquid coolant source 10 through the common outlet 303. After being cooled by the liquid coolant source 10, the coolant flows back into the distribution box 21 through the supply port, thus achieving coolant circulation.

[0068] Figure 4 shows a schematic diagram of the conductive circuit of the liquid-cooled charging pile. As shown by the dashed line in Figure 4, if the conductivity of the coolant is too high, the positive electrode wire 43 and the negative electrode wire 44 will be connected through the coolant, causing leakage or even arcing in the liquid-cooled charging pile.

[0069] In view of the above-mentioned technical problems, this application provides a liquid-cooled charging pile. As shown in Figure 5, the liquid-cooled charging pile includes a charging pile body 1 and a charging cable 4. The charging pile body 1 includes a liquid cooling source 10, which includes a liquid supply port and a liquid return port. The charging cable 4 includes a first cooling pipe 41 and a second cooling pipe 42, which are used to accommodate a positive electrode wire 43 and a negative electrode wire 44, respectively. The coolant in the liquid-cooled charging pile can be a water-based coolant, and the positive electrode wire 43 and the negative electrode wire 44 can be bare wires.

[0070] The liquid-cooled charging pile is used to alternate between the first mode and the second mode. The upper part of Figure 5 shows a schematic diagram of the liquid-cooled charging pile operating in the first mode, and the lower part of Figure 5 shows a schematic diagram of the liquid-cooled charging pile operating in the second mode.

[0071] As shown in the upper part of Figure 5, in the first mode, the supply port, the first cooling pipe 41, and the return port are connected. This allows the coolant in the first cooling pipe 41, where the positive electrode wire 43 is located, to circulate, continuously carrying away heat from the positive electrode wire 43 and achieving heat dissipation. Furthermore, continuing to refer to the upper part of Figure 5, in the first mode, the two ends of the second cooling pipe 42 are separated from the supply port and the return port, respectively. This separates the coolant in the second cooling pipe 42 from the coolant in the first cooling pipe 41, preventing a connection between the positive electrode wire 43 and the negative electrode wire 44 through the coolant.

[0072] As shown in the lower part of Figure 5, in the second mode, the supply port, the second cooling pipe 42, and the return port are connected. This allows the coolant in the second cooling pipe 42, where the negative electrode wire 44 is located, to circulate, continuously carrying away heat from the negative electrode wire 44 and achieving heat dissipation. Furthermore, continuing to refer to the lower part of Figure 5, in the second mode, the two ends of the first cooling pipe 41 are separated from the supply port and the return port, respectively. This separates the coolant in the second cooling pipe 42 from the coolant in the first cooling pipe 41, preventing a connection between the positive electrode wire 43 and the negative electrode wire 44 through the coolant.

[0073] In summary, the liquid-cooled charging station achieves heat dissipation for the entire charging cable 4 by alternating between the first and second operating modes. Furthermore, since there is no risk of continuity between the positive and negative conductors 43 and 44 via the coolant, the liquid-cooled charging station eliminates the need for a deionizer and conductivity sensor, reducing its complexity, cost, failure rate, and maintenance requirements.

[0074] In some examples, as shown in Figure 5, the charging cable 4 further includes a first liquid inlet pipe 45, a second liquid inlet pipe 46, a first liquid cooling assembly 47, and a second liquid cooling assembly 48. One end of the first liquid inlet pipe 45 is connected to the liquid supply port of the liquid cooling source 10, and one end of the first cooling pipe 41 is connected to the liquid return port of the liquid cooling source 10. The other ends of the first liquid inlet pipe 45 and the other ends of the first cooling pipe 41 are connected through the first liquid cooling assembly 47. One end of the second liquid inlet pipe 46 is connected to the liquid supply port of the liquid cooling source 10, and one end of the second cooling pipe 42 is connected to the liquid return port of the liquid cooling source 10. The other ends of the second liquid inlet pipe 46 and the other ends of the second cooling pipe 42 are connected through the second liquid cooling assembly 48.

[0075] The first liquid cooling assembly 47 and the second liquid cooling assembly 48 are located inside the charging gun 40 and are used to cool the positive and negative terminals. In some examples, a portion of the positive and negative terminals may be located within the first and second liquid cooling assemblies. In other examples, the first liquid cooling assembly 47 and the second liquid cooling assembly 48 are respectively attached to the positive and negative terminals and are insulated from each other.

[0076] In some examples, as shown in Figure 5, the liquid cooling source 10 includes a water pump 11 and a heat exchanger 12. The water pump 11 drives the coolant circulation. The heat exchanger 12 dissipates the heat carried in the coolant and may include a radiator and a fan. Driven by the water pump 11, heat is continuously transferred from the charging cable 4 to the charging pile body 1, and then discharged to the atmosphere through the heat exchanger 12. Additionally, as shown in Figure 5, the charging pile body 1 also includes a water tank 13, which replenishes the coolant circulation loop.

[0077] In the first mode, when the first cooling pipe 41 is turned on, the coolant in the first cooling pipe 41 circulates under the drive of the water pump 11. In the second mode, when the second cooling pipe 42 is turned on, the coolant in the second cooling pipe 42 circulates under the drive of the water pump 11.

[0078] In some examples, as shown in Figure 5, the liquid-cooled charging pile also includes a shunt component 2 and a merging component 3. The shunt component 2 includes a common liquid inlet 201, a first liquid outlet 202, and a second liquid outlet 203. The merging component 3 includes a first liquid inlet 301, a second liquid inlet 302, and a common liquid outlet 303. The common liquid inlet 201 is connected to the liquid supply port of the liquid cooling source 10. The first liquid outlet 202 and the second liquid outlet 203 are respectively connected to the liquid inlets of the first cooling pipe 41 and the second cooling pipe 42. The liquid outlets of the first cooling pipe 41 and the second cooling pipe 42 are respectively connected to the first liquid inlet 301 and the second liquid inlet 302. The common liquid outlet 303 is connected to the return port of the liquid cooling source 10.

[0079] As shown in the upper part of Figure 5, in the first mode, the common inlet 201, the first outlet 202, the first cooling pipe 41, the first inlet 301, and the common outlet 303 are connected. This allows the coolant in the first cooling pipe 41, where the positive electrode wire 43 is located, to circulate, continuously carrying away heat from the positive electrode wire 43 and achieving heat dissipation. Furthermore, continuing to refer to the upper part of Figure 5, in the first mode, the inlet of the second cooling pipe 42 is separated from the common inlet 201, and the outlet of the second cooling pipe 42 is separated from the common outlet 303. This seals the coolant in the second cooling pipe 42, preventing contact between the coolant in the second cooling pipe 42 and the coolant in the first cooling pipe 41, thus preventing conduction between the positive electrode wire 43 and the negative electrode wire 44 through the coolant.

[0080] As shown in the lower part of Figure 5, in the second mode, the common inlet 201, the second outlet 203, the second cooling pipe 42, the second inlet 302, and the common outlet 303 are connected. This allows the coolant in the second cooling pipe 42, where the negative electrode wire 44 is located, to circulate, continuously carrying away the heat from the negative electrode wire 44, thus achieving heat dissipation. Furthermore, continuing to refer to the lower part of Figure 5, in the second mode, the inlet of the first cooling pipe 41 is separated from the common inlet 201, and the outlet of the first cooling pipe 41 is separated from the common outlet 303. This seals off the coolant in the first cooling pipe 41, preventing contact between the coolant in the first cooling pipe 41 and the coolant in the second cooling pipe 42, thus preventing conduction between the positive electrode wire 43 and the negative electrode wire 44 through the coolant.

[0081] The following provides an exemplary description of possible implementations of the diverter 2 and the merging device 3.

[0082] (1) In some examples, the diverter 2 includes a first three-way valve. The first three-way valve is used to connect the common inlet 201 and the first outlet 202 and separate the common inlet 201 and the second outlet 203; or to connect the common inlet 201 and the second outlet 203 and separate the common inlet 201 and the first outlet 202.

[0083] In some examples, the confluence element 3 includes a second three-way valve. The second three-way valve is used to connect the common outlet 303 with the first inlet 301 and separate the common outlet 303 from the second inlet 302; or to connect the common outlet 303 with the second inlet 302 and separate the common outlet 303 from the first inlet 301.

[0084] The structure of the aforementioned three-way valve can adopt the structure of an existing three-way valve. The three-way valve can be an insulating component. Alternatively, the valve core of the three-way valve can be an insulating component. This application simplifies the implementation of the flow divider 2 and the flow combiner 3 by setting them as three-way valves, thus ensuring high reliability.

[0085] (2) In some examples, as shown in Figure 6 or Figure 10, the diverter 2 includes a diverter box 21 and a first separator 22. The first separator 22 is located inside the diverter box 21. The first separator 22 is movable such that one of the first outlet 202 and the second outlet 203 is connected to the common inlet 201, and the other is separated from the common inlet 201.

[0086] In some examples, as shown in Figure 6 or Figure 10, the confluence member 3 includes a confluence box 31 and a second separator 32. The second separator 32 is located inside the confluence box 31. The second separator 32 is movable such that one of the first inlet 301 and the second inlet 302 is connected to a common outlet 303, and the other is separated from the common outlet 303.

[0087] As shown in the upper part of Figures 6 and 10, in the first mode, the common inlet 201 is connected to the first outlet 202 and separated from the second outlet 203, and the common outlet 303 is connected to the first inlet 301 and separated from the second inlet 302.

[0088] As shown in the lower part of Figures 6 and 10, in the second mode, the common inlet 201 is connected to the second outlet 203 and separated from the first outlet 202, and the common outlet 303 is connected to the second inlet 302 and separated from the first inlet 301.

[0089] Among them, the diverter 2 and the merging element 3 shown in Figure 6 can be considered as a three-way valve.

[0090] The following, with reference to Figures 6 and 10, provides an exemplary description of possible implementations of the first separator 22.

[0091] In some examples, as shown in Figure 6, the first partition 22 divides the interior of the diversion box 21 into a first chamber 211 and a second chamber 212, which are respectively connected to a first outlet 202 and a second outlet 203. The first partition 22 is movable so that one of the first chamber 211 and the second chamber 212 is connected to a common inlet 201, while the other is separated from the common inlet 201.

[0092] In some examples, as shown in Figure 6, the second partition 32 divides the interior of the confluence box 31 into a third chamber 311 and a fourth chamber 312, which are respectively connected to the first inlet 301 and the second inlet 302. The second partition 32 is movable so that one of the third chamber 311 and the fourth chamber 312 is connected to a common outlet 303, while the other is separated from the common outlet 303.

[0093] As shown in the upper part of Figure 6, in the first mode, the common inlet 201 is connected to the first outlet 202 through the first chamber 211, and the common outlet 303 is connected to the first inlet 301 through the third chamber 311. Thus, the common inlet 201, the first chamber 211, the first outlet 202, the first cooling pipe 41, the first inlet 301, the third chamber 311, and the common outlet 303 are interconnected, and the coolant in the first cooling pipe 41 circulates. The inlet (or second outlet 203) of the second cooling pipe 42 is separated from the common inlet 201 by the first separator 22, and the outlet (or second inlet 302) of the second cooling pipe 42 is separated from the common outlet 303 by the second separator 32. The coolant in the second cooling pipe 42 is sealed within the second cooling pipe 42, or, as some might say, sealed between the first separator 22 and the second separator 32. Therefore, the coolant in the second cooling pipe 42 cannot come into contact with the coolant in the first cooling pipe 41.

[0094] As shown in the lower part of Figure 6, in the second mode, the common inlet 201 is connected to the second outlet 203 through the second chamber 212, and the common outlet 303 is connected to the second inlet 302 through the fourth chamber 312. Thus, the common inlet 201, the second chamber 212, the second outlet 203, the second cooling pipe 42, the second inlet 302, the fourth chamber 312, and the common outlet 303 are sequentially connected, and the coolant in the second cooling pipe 42 circulates. The inlet (or first outlet 202) of the first cooling pipe 41 is separated from the common inlet 201 by the first separator 22, and the outlet (or first inlet 301) of the first cooling pipe 41 is separated from the common outlet 303 by the second separator 32. The coolant in the first cooling pipe 41 is sealed within the first cooling pipe 41, or, as some might say, sealed between the first separator 22 and the second separator 32. Therefore, the coolant in the first cooling pipe 41 cannot come into contact with the coolant in the second cooling pipe 42.

[0095] The first separator 22 and the second separator 32 shown in Figure 6 can also be referred to as the first separator plate and the second separator plate.

[0096] During the movement of the first partition 22, the volumes of the first chamber 211 and the second chamber 212 change. For example, when the volume of the first chamber 211 decreases and the volume of the second chamber 212 increases, the pressure in the first chamber 211 increases and the pressure in the second chamber 212 decreases. Therefore, as the first partition 22 moves, the pressure difference it needs to overcome increases. Similarly, when the volume of the first chamber 211 increases and the volume of the second chamber 212 decreases, the pressure difference it needs to overcome also increases.

[0097] To reduce the resistance encountered by the first separator 22 during movement, in some examples, as shown in Figures 7 and 8, the diverter 2 further includes a first buffer 23 and a second buffer 24. The first buffer 23 is located in the first chamber 211 and is used to contract (i.e., release space) when the first chamber 211 shrinks and expands (i.e., absorb space) when the first chamber 211 expands. The second buffer 24 is located in the second chamber 212 and is used to contract (i.e., expand) when the second chamber 212 expands.

[0098] Thus, as shown in Figure 7, when the first chamber 211 decreases in size and the second chamber 212 increases in size, the pressure in the first chamber 211 increases, and the pressure in the second chamber 212 decreases. Conversely, the contraction of the first buffer 23 in the first chamber 211 reduces its pressure, while the expansion of the second buffer 24 in the second chamber 212 increases its pressure. This ensures that the pressure on both sides of the first separator 22 becomes more even, preventing the first separator 22 from being unable to move smoothly due to pressure differences.

[0099] Similarly, as shown in Figure 8, when the first chamber 211 expands and the second chamber 212 shrinks, the pressure in the first chamber 211 decreases, while the pressure in the second chamber 212 increases. Furthermore, the expansion of the first buffer 23 in the first chamber 211 increases the pressure there, while the contraction of the second buffer 24 in the second chamber 212 decreases the pressure there. This ensures that the pressure on both sides of the first separator 22 becomes more even, preventing the first separator 22 from being unable to move smoothly due to the pressure difference.

[0100] In Figures 7 and 8, the solid lines of the first buffer 23 represent its current form, while the dashed lines represent the form it will transform into. Similarly, the solid lines of the second buffer 24 represent its current form, while the dashed lines represent the form it will transform into.

[0101] For the same reason, in some examples, as shown in Figures 7 and 8, the merging member 3 also includes a third buffer 33 and a fourth buffer 34. The third buffer 33 is located in the third chamber 311 and is used to contract when the third chamber 311 decreases in size and to expand when the third chamber 311 increases in size. The fourth buffer 34 is located in the fourth chamber 312 and is used to contract when the fourth chamber 312 decreases in size and to expand when the fourth chamber 312 increases in size.

[0102] The embodiments of this application do not limit the implementation of the first buffer 23, the second buffer 24, the third buffer 33, and the fourth buffer 34. In some examples, the above-mentioned buffers are airbags, which can expand by inflating and contract by deflating. Of course, in other examples, the above-mentioned buffers can also be cavities with switches, etc.

[0103] The embodiments of this application do not limit the connection method between the first partition 22 and the diversion box 21. In some examples, as shown in Figures 7 and 8, the first partition 22 and the diversion box 21 are slidably connected. In other examples, as shown in Figure 9, the first partition 22 and the diversion box 21 are rotatably connected.

[0104] Accordingly, in some examples, as shown in Figures 7 and 8, the second separator 32 is slidably connected to the confluence box 31. In other examples, as shown in Figure 9, the second separator 32 is rotatably connected to the confluence box 31.

[0105] In addition, the diverter 2 and the merging member 3 may also include a power component (such as a motor) for driving the first separator 22 or the second separator 32 to move.

[0106] Figure 10 illustrates another implementation of the first partition 22. In some examples, as shown in Figure 10, the first partition 22 includes a fifth chamber 221 connected to a common inlet 201. The first partition 22 is movable such that one of the first outlet 202 and the second outlet 203 is connected to the fifth chamber 221, while the other is separated from the fifth chamber 221.

[0107] In some examples, as shown in Figure 10, the second partition 32 includes a sixth chamber 321 connected to a common outlet 303. The second partition 32 is movable such that one of the first inlet 301 and the second inlet 302 is connected to the sixth chamber 321, while the other is separated from the sixth chamber 321.

[0108] As shown in the upper part of Figure 10, in the first mode, the first liquid outlet 202 is connected to the fifth chamber 221, and the first liquid inlet 301 is connected to the sixth chamber 321. Thus, the common liquid inlet 201, the fifth chamber 221, the first liquid outlet 202, the first cooling pipe 41, the first liquid inlet 301, the sixth chamber 321, and the common liquid outlet 303 are interconnected, allowing the coolant in the first cooling pipe 41 to circulate. The liquid inlet (or second liquid outlet 203) of the second cooling pipe 42 is separated from the common liquid inlet 201, and the liquid outlet (or second liquid inlet 302) of the second cooling pipe 42 is separated from the common liquid outlet 303, confining the coolant in the second cooling pipe 42. This prevents the coolant in the second cooling pipe 42 from contacting the coolant in the first cooling pipe 41.

[0109] As shown in the lower part of Figure 10, in the second mode, the second liquid outlet 203 is connected to the fifth chamber 221, and the second liquid inlet 302 is connected to the sixth chamber 321. Thus, the common liquid inlet 201, the fifth chamber 221, the second liquid outlet 203, the second cooling pipe 42, the second liquid inlet 302, the sixth chamber 321, and the common liquid outlet 303 are interconnected, and the coolant in the second cooling pipe 42 circulates. The liquid inlet (or first liquid outlet 202) of the first cooling pipe 41 is separated from the common liquid inlet 201, and the liquid outlet (or first liquid inlet 301) of the first cooling pipe 41 is separated from the common liquid outlet 303, thus sealing the coolant in the first cooling pipe 41. This prevents the coolant in the first cooling pipe 41 from contacting the coolant in the second cooling pipe 41.

[0110] The first separator 22 and the second separator 32 shown in Figure 10 can also be considered as separator boxes. For example, Figure 11 shows a schematic diagram of either the first separator 22 or the second separator 32. As shown in Figure 11, the first separator 22 includes a fifth chamber 221 with openings at both ends. One opening connects to a common inlet 201, and the other opening connects to one of the first outlet 202 and the second outlet 203. The second separator 32 includes a sixth chamber 321 with openings at both ends. One opening connects to a common outlet 303, and the other opening connects to one of the first inlet 301 and the second inlet 302.

[0111] The technical solution provided in this application embodiment, by setting the first separator 22 and the second separator 32 to have accommodating cavities, ensures that the first separator 22 and the second separator 32 are not subject to pressure difference resistance during movement. This eliminates the need for buffer components in the diverter 2 and the merging member 3.

[0112] In other examples, as shown in Figures 12 and 13, the liquid-cooled charging pile also includes a first valve 5, a second valve 6, a third valve 7, and a fourth valve 8. The first valve 5 is located between the inlet and outlet 202 of the first cooling pipe 41, and the second valve 6 is located between the outlet and inlet 301 of the first cooling pipe 41. The third valve 7 is located between the inlet and outlet 203 of the second cooling pipe 42, and the fourth valve 8 is located between the outlet and inlet 302 of the second cooling pipe 42. The diverter 2 and merging member 3 in Figures 12 and 13 can be a three-way pipe structure. The first valve 5, second valve 6, third valve 7, and fourth valve 8 can be electrically controlled valves. The first valve 5, second valve 6, third valve 7, and fourth valve 8 can be insulating components.

[0113] As shown in the upper parts of Figures 12 and 13, in the first mode, the first valve 5 and the second valve 6 are open. The third valve 7 and the fourth valve 8 are closed. This connects the common inlet 201, the first outlet 202, the first cooling pipe 41, the first inlet 301, and the common outlet 303, allowing the coolant in the first cooling pipe 41 to circulate. The coolant in the second cooling pipe 42 is confined between the third valve 7 and the fourth valve 8. Consequently, the coolant in the second cooling pipe 42 cannot come into contact with the coolant in the first cooling pipe 41.

[0114] As shown in the lower parts of Figures 12 and 13, in the second mode, the third valve 7 and the fourth valve 8 are open. The first valve 5 and the second valve 6 are closed. This connects the common inlet 201, the second outlet 203, the second cooling pipe 42, the second inlet 302, and the common outlet 303, allowing the coolant in the second cooling pipe 42 to circulate. The coolant in the first cooling pipe 41 is sealed between the first valve 5 and the third valve 7. Therefore, the coolant in the first cooling pipe 41 cannot come into contact with the coolant in the second cooling pipe 42.

[0115] The embodiments of this application do not limit the positions of the first valve 5 and the third valve 7. In some examples, as shown in FIG12, the first valve 5 is located between the inlet of the first inlet pipe 45 and the first outlet 202. The third valve 7 is located between the inlet of the second inlet pipe 46 and the second outlet 203.

[0116] In other examples, as shown in Figure 13, the first valve 5 is located between the outlet of the first inlet pipe 45 and the inlet of the first cooling pipe 41. The third valve 7 is located between the outlet of the second inlet pipe 46 and the inlet of the second cooling pipe 42.

[0117] For example, as shown in FIG13, the first valve 5 is located between the liquid inlet of the first liquid cooling assembly 47 and the first cooling pipe 41. The third valve 7 is located between the liquid inlet of the second liquid cooling assembly 48 and the second cooling pipe 42.

[0118] Of course, in other examples, the first valve 5 may also be located between the outlet of the first liquid cooling assembly 47 and the first inlet pipe 45. The third valve 7 is located between the outlet of the second liquid cooling assembly 48 and the second inlet pipe 46.

[0119] Besides the technical solution of setting the diverter 2 and the merging component 3, in other examples, as shown in Figures 14 and 15, the liquid supply port of the liquid cooling source 10 includes a first liquid supply port and a second liquid supply port. The return port of the liquid cooling source 10 includes a first return port and a second return port. The first liquid supply port and the second liquid supply port are respectively connected to the liquid inlet of the first cooling pipe 41 and the liquid inlet of the second cooling pipe 42, and the first return port and the second return port are respectively connected to the liquid outlet of the first cooling pipe 41 and the liquid outlet of the second cooling pipe 42.

[0120] As shown in the upper parts of Figures 14 and 15, in the first mode, the first liquid supply port, the first cooling pipe 41, and the first liquid return port are connected. This allows the coolant in the first cooling pipe 41 to circulate, continuously carrying away heat from the positive electrode wire 43. Furthermore, the inlet of the second cooling pipe 42 is separated from the second liquid supply port, and the outlet of the second cooling pipe 42 is separated from the second liquid return port, ensuring that the negative electrode wire 44 and the positive electrode wire 43 are not connected by coolant.

[0121] As shown in the lower parts of Figures 14 and 15, in the second mode, the second liquid supply port, the second cooling pipe 42, and the second liquid return port are connected. This allows the coolant in the second cooling pipe 42 to circulate, continuously carrying away heat from the negative electrode wire 44. Furthermore, the inlet of the first cooling pipe 41 is separated from the first liquid supply port, and the outlet of the first cooling pipe 41 is separated from the first liquid return port, ensuring that the positive electrode wire 43 and the negative electrode wire 44 are not connected by coolant.

[0122] In some examples, as shown in Figures 14 and 15, the liquid cooling source 10 includes two water pumps 11, each corresponding to one of the two first liquid supply ports. Of course, in other examples, it may include only one water pump 11, which corresponds to both first liquid supply ports.

[0123] In some examples, as shown in Figures 14 and 15, the liquid-cooled charging pile also includes a first valve 5, a second valve 6, a third valve 7, and a fourth valve 8. The first valve 5 is located between the first liquid supply port and the liquid inlet of the first cooling pipe 41, and the second valve 6 is located between the first liquid return port and the liquid outlet of the first cooling pipe 41. The third valve 7 is located between the second liquid supply port and the liquid inlet of the second cooling pipe 42, and the fourth valve 8 is located between the second liquid return port and the liquid outlet of the second cooling pipe 42.

[0124] As shown in the upper parts of Figures 14 and 15, in the first mode, the first valve 5 and the second valve 6 are open. This connects the first inlet, the first cooling pipe 41, and the first return port. The third valve 7 and the fourth valve 8 are closed. This seals the coolant in the second cooling pipe 42 between the third valve 7 and the fourth valve 8, preventing it from contacting the coolant in the first cooling pipe 41.

[0125] As shown in the lower parts of Figures 14 and 15, in the second mode, the third valve 7 and the fourth valve 8 are open. This connects the second inlet, the second cooling pipe 42, and the second return port. The first valve 5 and the second valve 6 are closed. This seals the coolant in the first cooling pipe 41 between the first valve 5 and the second valve 6, preventing the coolant in the first cooling pipe 41 from contacting the coolant in the second cooling pipe 42.

[0126] In some examples, as shown in Figure 14, the first valve 5 is located between the inlet and the first supply port of the first inlet pipe 45. The third valve 7 is located between the inlet and the second supply port of the second inlet pipe 46.

[0127] In other examples, as shown in Figure 15, the first valve 5 is located between the outlet of the first inlet pipe 45 and the inlet of the first cooling pipe 41. The third valve 7 is located between the outlet of the second inlet pipe 46 and the inlet of the second cooling pipe 42.

[0128] For example, as shown in FIG15, the first valve 5 is located between the liquid inlet of the first liquid cooling assembly 47 and the first cooling pipe 41. The third valve 7 is located between the liquid inlet of the second liquid cooling assembly 48 and the second cooling pipe 42.

[0129] Of course, in other examples, the first valve 5 may also be located between the outlet of the first liquid cooling assembly 47 and the first inlet pipe 45. The third valve 7 is located between the outlet of the second liquid cooling assembly 48 and the second inlet pipe 46.

[0130] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A liquid-cooled charging pile, characterized in that, The liquid-cooled charging pile includes a charging pile body (1) and a charging cable (4); The charging pile body (1) includes a liquid cooling source (10), and the liquid cooling source (10) includes a liquid supply port and a liquid return port; The charging cable (4) includes a first cooling pipe (41) and a second cooling pipe (42), which are used to accommodate the positive electrode wire (43) and the negative electrode wire (44), respectively. The liquid-cooled charging pile is used to alternate between the first mode and the second mode. In the first mode, the liquid supply port, the first cooling pipe (41) and the liquid return port are connected, and the two ends of the second cooling pipe (42) are separated from the liquid supply port and the liquid return port, respectively. In the second mode, the liquid supply port, the second cooling pipe (42) and the liquid return port are connected, and the two ends of the first cooling pipe (41) are separated from the liquid supply port and the liquid return port, respectively.

2. The liquid-cooled charging pile according to claim 1, characterized in that, The liquid-cooled charging pile also includes a shunt component (2) and a merging component (3). The shunt component (2) includes a common liquid inlet (201), a first liquid outlet (202) and a second liquid outlet (203). The merging component (3) includes a first liquid inlet (301), a second liquid inlet (302) and a common liquid outlet (303). The common liquid inlet (201) is connected to the liquid supply port, the first liquid outlet (202) and the second liquid outlet (203) are respectively connected to the liquid inlet of the first cooling pipe (41) and the liquid inlet of the second cooling pipe (42), the liquid outlet of the first cooling pipe (41) and the liquid outlet of the second cooling pipe (42) are respectively connected to the first liquid inlet (301) and the second liquid inlet (302), and the common liquid outlet (303) is connected to the liquid return port; In the first mode, the common liquid inlet (201), the first liquid outlet (202), the first cooling pipe (41), the first liquid inlet (301) and the common liquid outlet (303) are connected, the liquid inlet of the second cooling pipe (42) is separated from the common liquid inlet (201), and the liquid outlet of the second cooling pipe (42) is separated from the common liquid outlet (303); In the second mode, the common liquid inlet (201), the second liquid outlet (203), the second cooling pipe (42), the second liquid inlet (302), and the common liquid outlet (303) are connected. The liquid inlet of the first cooling pipe (41) is separated from the common liquid inlet (201), and the liquid outlet of the first cooling pipe (41) is separated from the common liquid outlet (303).

3. The liquid-cooled charging pile according to claim 2, characterized in that, The diverter (2) includes a first three-way valve, which is used to connect the common inlet (201) and the first outlet (202) and separate the common inlet (201) and the second outlet (203); or connect the common inlet (201) and the second outlet (203) and separate the common inlet (201) and the first outlet (202); The merging component (3) includes a second three-way valve, which is used to connect the common outlet (303) with the first inlet (301) and separate the common outlet (303) from the second inlet (302); or connect the common outlet (303) with the second inlet (302) and separate the common outlet (303) from the first inlet (301).

4. The liquid-cooled charging pile according to claim 2, characterized in that, The diversion component (2) includes a diversion box (21) and a first partition (22). The diversion box (21) includes a common inlet (201), a first outlet (202) and a second outlet (203). The first partition (22) is located inside the diversion box (21). The first partition (22) is movable so that one of the first outlet (202) and the second outlet (203) is connected to the common inlet (201), and the other is separated from the common inlet (201). The merging component (3) includes a merging box (31) and a second separator (32). The merging box (31) includes a first inlet (301), a second inlet (302), and a common outlet (303). The second separator (32) is located inside the merging box (31). The second separator (32) is movable so that one of the first inlet (301) and the second inlet (302) is connected to the common outlet (303), and the other is separated from the common outlet (303). In the first mode, the common inlet (201) is connected to the first outlet (202) and separated from the second outlet (203), and the common outlet (303) is connected to the first inlet (301) and separated from the second inlet (302); In the second mode, the common inlet (201) is connected to the second outlet (203) and separated from the first outlet (202), and the common outlet (303) is connected to the second inlet (302) and separated from the first inlet (301).

5. The liquid-cooled charging pile according to claim 4, characterized in that, The first partition (22) divides the interior of the diversion box (21) into a first chamber (211) and a second chamber (212). The first chamber (211) and the second chamber (212) are respectively connected to the first liquid outlet (202) and the second liquid outlet (203). The first partition (22) is movable so that one of the first chamber (211) and the second chamber (212) is connected to the common liquid inlet (201), and the other is separated from the common liquid inlet (201). The second separator (32) divides the interior of the merging box (31) into a third chamber (311) and a fourth chamber (312). The third chamber (311) and the fourth chamber (312) are respectively connected to the first liquid inlet (301) and the second liquid inlet (302). The second separator (32) is movable so that one of the third chamber (311) and the fourth chamber (312) is connected to the common liquid outlet (303), and the other is separated from the common liquid outlet (303). In the first mode, the common inlet (201) is connected to the first chamber (211) and separated from the second chamber (212), and the common outlet (303) is connected to the third chamber (311) and separated from the fourth chamber (312); In the second mode, the common inlet (201) is connected to the second chamber (212) and separated from the first chamber (211), and the common outlet (303) is connected to the fourth chamber (312) and separated from the third chamber (311).

6. The liquid-cooled charging pile according to claim 5, characterized in that, The diversion component (2) further includes a first buffer (23) and a second buffer (24). The first buffer (23) is located in the first chamber (211) and is used to contract when the first chamber (211) becomes smaller and to expand when the first chamber (211) becomes larger. The second buffer (24) is located in the second chamber (212) and is used to contract when the second chamber (212) becomes smaller and to expand when the second chamber (212) becomes larger. The merging member (3) further includes a third buffer (33) and a fourth buffer (34). The third buffer (33) is located in the third chamber (311) and is used to contract when the third chamber (311) becomes smaller and to expand when the third chamber (311) becomes larger. The fourth buffer (34) is located in the fourth chamber (312) and is used to contract when the fourth chamber (312) becomes smaller and to expand when the fourth chamber (312) becomes larger.

7. The liquid-cooled charging pile according to claim 4, characterized in that, The first partition (22) includes a fifth chamber (221) which is connected to the common inlet (201). The first partition (22) is movable so that one of the first outlet (202) and the second outlet (203) is connected to the fifth chamber (221) and the other is separated from the fifth chamber (221). The second partition (32) includes a sixth chamber (321) that is connected to the common outlet (303). The second partition (32) is movable such that one of the first inlet (301) and the second inlet (302) is connected to the sixth chamber (321) and the other is separated from the sixth chamber (321). In the first mode, the fifth chamber (221) is connected to the first liquid outlet (202) and separated from the second liquid outlet (203), and the sixth chamber (321) is connected to the first liquid inlet (301) and separated from the second liquid inlet (302); In the second mode, the fifth chamber (221) is connected to the second liquid outlet (203) and separated from the first liquid outlet (202), and the sixth chamber (321) is connected to the second liquid inlet (302) and separated from the first liquid inlet (301).

8. The liquid-cooled charging pile according to any one of claims 2-7, characterized in that, The liquid-cooled charging pile also includes a charging gun (40), a first liquid inlet pipe (45), a second liquid inlet pipe (46), a first liquid cooling component (47), and a second liquid cooling component (48); The inlet of the first liquid inlet pipe (45) is used to connect to the first liquid outlet (202), and the outlet of the first liquid inlet pipe (45) is connected to the inlet of the first cooling pipe (41) through the first liquid cooling component (47). The inlet of the second liquid inlet pipe (46) is used to connect to the second liquid outlet (203), and the outlet of the second liquid inlet pipe (46) is connected to the inlet of the second cooling pipe (42) through the second liquid cooling component (48); The charging gun (40) is connected to one end of the charging cable (4) away from the charging pile body (1), and the first liquid cooling component (47) and the second liquid cooling component (48) are used to cool the terminals of the charging gun (40).

9. The liquid-cooled charging pile according to claim 2, characterized in that, The liquid-cooled charging pile also includes a first valve (5), a second valve (6), a third valve (7), and a fourth valve (8); The first valve (5) is located between the liquid inlet and the first liquid outlet (202) of the first cooling pipe (41), and the second valve (6) is located between the liquid outlet and the first liquid inlet (301) of the first cooling pipe (41). The third valve (7) is located between the liquid inlet and the second liquid outlet (203) of the second cooling pipe (42), and the fourth valve (8) is located between the liquid outlet and the second liquid inlet (302) of the second cooling pipe (42). In the first mode, the first valve (5) and the second valve (6) are open, and the third valve (7) and the fourth valve (8) are closed; In the second mode, the third valve (7) and the fourth valve (8) are open, and the first valve (5) and the second valve (6) are closed.

10. The liquid-cooled charging pile according to claim 9, characterized in that, The liquid-cooled charging pile also includes a charging gun (40), a first liquid inlet pipe (45), a second liquid inlet pipe (46), a first liquid cooling component (47), and a second liquid cooling component (48); The inlet of the first liquid inlet pipe (45) is used to connect to the first liquid outlet (202), the outlet of the first liquid inlet pipe (45) is connected to the inlet of the first cooling pipe (41) through the first liquid cooling component (47), the inlet of the second liquid inlet pipe (46) is used to connect to the second liquid outlet (203), the outlet of the second liquid inlet pipe (46) is connected to the inlet of the second cooling pipe (42) through the second liquid cooling component (48), the charging gun (40) is connected to the end of the charging cable (4) away from the charging pile body (1), and the first liquid cooling component (47) and the second liquid cooling component (48) are used to cool the terminals of the charging gun (40); The first valve (5) is located between the inlet of the first liquid inlet pipe (45) and the first liquid outlet (202), or between the outlet of the first liquid inlet pipe (45) and the inlet of the first cooling pipe (41). The third valve (7) is located between the inlet of the second inlet pipe (46) and the second outlet (203), or between the outlet of the second inlet pipe (46) and the inlet of the second cooling pipe (42).

11. The liquid-cooled charging pile according to claim 1, characterized in that, The liquid supply port of the liquid cooling source (10) includes a first liquid supply port and a second liquid supply port, and the liquid return port of the liquid cooling source (10) includes a first liquid return port and a second liquid return port. The first liquid supply port and the second liquid supply port are respectively connected to the liquid inlet of the first cooling pipe (41) and the liquid inlet of the second cooling pipe (42), and the first liquid return port and the second liquid return port are respectively connected to the liquid outlet of the first cooling pipe (41) and the liquid outlet of the second cooling pipe (42). In the first mode, the first liquid supply port, the first cooling pipe (41) and the first liquid return port are connected, the liquid inlet of the second cooling pipe (42) is separated from the second liquid supply port, and the liquid outlet of the second cooling pipe (42) is separated from the second liquid return port. In the second mode, the second liquid supply port, the second cooling pipe (42) and the second liquid return port are connected, the liquid inlet of the first cooling pipe (41) is separated from the first liquid supply port, and the liquid outlet of the first cooling pipe (41) is separated from the first liquid return port.

12. The liquid-cooled charging pile according to claim 11, characterized in that, The liquid-cooled charging pile also includes a first valve (5), a second valve (6), a third valve (7), and a fourth valve (8); The first valve (5) is located between the liquid inlet and the first liquid supply port of the first cooling pipe (41), and the second valve (6) is located between the liquid outlet and the first liquid return port of the first cooling pipe (41). The third valve (7) is located between the liquid inlet and the second liquid supply port of the second cooling pipe (42), and the fourth valve (8) is located between the liquid outlet and the second liquid return port of the second cooling pipe (42). In the first mode, the first valve (5) and the second valve (6) are open, and the third valve (7) and the fourth valve (8) are closed; In the second mode, the third valve (7) and the fourth valve (8) are open, and the first valve (5) and the second valve (6) are closed.

13. The liquid-cooled charging pile according to claim 12, characterized in that, The liquid-cooled charging pile also includes a charging gun (40), a first liquid inlet pipe (45), a second liquid inlet pipe (46), a first liquid cooling component (47), and a second liquid cooling component (48); The inlet of the first liquid inlet pipe (45) is used to connect to the first liquid supply port. The outlet of the first liquid inlet pipe (45) is connected to the inlet of the first cooling pipe (41) through the first liquid cooling component (47). The inlet of the second liquid inlet pipe (46) is used to connect to the second liquid supply port. The outlet of the second liquid inlet pipe (46) is connected to the inlet of the second cooling pipe (42) through the second liquid cooling component (48). The charging gun (40) is connected to one end of the charging cable (4) away from the charging pile body (1). The first liquid cooling component (47) and the second liquid cooling component (48) are used to cool the terminals of the charging gun (40). The first valve (5) is located between the inlet of the first liquid inlet pipe (45) and the first liquid supply port, or between the outlet of the first liquid inlet pipe (45) and the inlet of the first cooling pipe (41). The third valve (7) is located between the inlet of the second liquid inlet pipe (46) and the second liquid supply port, or between the outlet of the second liquid inlet pipe (46) and the inlet of the second cooling pipe (42).

Images