Charging pile

Abstract

The present application provides a charging pile. The charging pile comprises a charging gun, a heat exchanger, and a deionizer. A wire in the charging gun is immersed in a cooling liquid of a liquid cooling channel. A heat exchange channel of the heat exchanger is used for cooling the cooling liquid outputted from the liquid cooling channel, and delivering the cooled cooling liquid to the liquid cooling channel. A liquid outlet of the liquid cooling channel is connected to a liquid inlet of the heat exchange channel by means of the deionizer to form a deionization channel, or a liquid outlet of the heat exchange channel is connected to a liquid inlet of the liquid cooling channel by means of the deionizer to form a deionization channel. The present application can improve the heat dissipation efficiency of the wire, and can also prevent the problems of increased ion concentration of the cooling liquid, susceptibility to electrolysis of the cooling liquid, and decreased insulation performance of the cooling liquid which are caused by direct contact between the wire and the cooling liquid.

Description

charging pile

[0001] This application claims priority to Chinese Patent Application No. 202411555855.0, filed with the China National Intellectual Property Administration on October 31, 2024, entitled "Charging Pile", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of charging, and more specifically, to a charging pile. Background Technology

[0003] With the acceleration of the dual-carbon strategy and the increasing popularity of electric vehicles, more and more cities are starting to build supercharging cities. This is prompting the development of charging piles towards high-power supercharging piles, in order to achieve rapid charging of electric vehicles at "one kilometer per second", thereby pursuing a brand-new charging experience of "a cup of coffee, a full charge and off to go".

[0004] Currently, charging stations deliver charging power to electric vehicles via charging guns. However, as charging power continues to increase, the heat generated by the charging gun cables will also increase significantly. If this heat cannot be dissipated in time, it can easily affect the normal delivery of high power by the charging gun, leading to a decrease in the safety of charging electric vehicles. Summary of the Invention

[0005] This application provides a charging station that allows the wires in the charging gun to directly contact the coolant, thereby improving the heat dissipation efficiency of the wires while preventing problems such as increased ion concentration in the coolant, easy electrolysis of the coolant, and decreased insulation performance of the coolant caused by direct contact between the wires and the coolant. Furthermore, this satisfies the heat dissipation requirements of the charging gun during high-power charging and improves the operational safety of the charging station.

[0006] Firstly, a charging station is provided, comprising a charging gun, a heat exchanger, and a deionizer. The charging gun includes a wire and a liquid-cooled channel, the wire being immersed in coolant in the liquid-cooled channel. The wire is used to output electrical energy to an electric vehicle, and the coolant in the liquid-cooled channel is used to exchange heat with the wire. The heat exchanger's heat exchange channel is used to cool the coolant output from the liquid-cooled channel and to transport the cooled coolant back to the liquid-cooled channel. The outlet of the liquid-cooled channel is connected to the inlet of the heat exchange channel via the deionizer to form a deionized channel, or the outlet of the heat exchange channel is connected to the inlet of the liquid-cooled channel via the deionizer to form a deionized channel.

[0007] In the above technical solution, the wires in the charging gun can directly contact the coolant in the liquid cooling channel, thereby accelerating the transfer of heat from the wires to the coolant and improving the heat dissipation efficiency of the wires. Furthermore, a deionizer forms a deionization channel between the liquid cooling channel and the heat exchanger's heat exchange channel. This allows the coolant to circulate between the liquid cooling channel, the heat exchanger's heat exchange channel, and any deionizer-formed deionization channel when the heat exchanger is operating, thus reducing the ion concentration of the coolant. This prevents the increase in coolant ion concentration caused by direct contact between the wires and the coolant, the potential for hydrogen electrolysis, and the degradation of the coolant's insulation properties. This helps meet the heat dissipation requirements of the charging gun during high-power charging and improves the operational safety of the charging station.

[0008] In one embodiment, the charging pile further includes an outlet channel and an inlet channel. The outlet channel is connected between the outlet of the liquid cooling channel and the inlet of the heat exchange channel, and the inlet channel is connected between the outlet of the heat exchange channel and the inlet of the liquid cooling channel. There are one or more deionizers, wherein the outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel through each of the one or more deionizers, and the outlet channel is connected in parallel with the deionization channel formed by each deionizer. Alternatively, the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel through each deionizer, and the inlet channel is connected in parallel with the deionization channel formed by each deionizer.

[0009] In the above technical solution, the deionization channel formed by each deionizer in the charging pile is connected in parallel with either the liquid outlet channel or the liquid inlet channel. Thus, when the ion concentration of the coolant flowing between the liquid cooling channel and the heat exchange channel is low, the charging pile can disconnect the deionization channel formed by each deionizer. At this time, the coolant can circulate between the liquid cooling channel and the heat exchange channel through the liquid outlet channel and the liquid inlet channel. Conversely, when the ion concentration of the coolant flowing between the liquid cooling channel and the heat exchange channel is high, the charging pile can activate the deionization channel formed by at least one deionizer. This allows each deionizer to operate only when the ion concentration of the coolant is high, thereby reducing the ion concentration of the coolant and shortening the operating time of the deionizer. Furthermore, this helps to extend the overall service life of one or more deionizers in the charging pile.

[0010] In one embodiment, the charging pile is used to activate at least one deionization channel formed by a deionizer when the heat exchanger is operating and the coolant flowing between the heat exchange channel and the liquid cooling channel meets preset conditions. The preset conditions include at least one of the following: the conductivity of the flowing coolant is greater than a first preset conductivity, and the leakage current of the flowing coolant is greater than a first preset leakage current.

[0011] In the above technical solution, when the conductivity or leakage current of the coolant in the charging pile exceeds a preset value, at least one deionizer channel is activated. This allows the deionizer to only begin operation when the ion concentration of the coolant flowing between the liquid-cooling channel and the heat exchange channel is relatively high, thereby reducing the ion concentration of the coolant and shortening the operating time of the deionizer. Consequently, this helps extend the overall service life of one or more deionizers in the charging pile.

[0012] In one embodiment, the charging pile is further configured to: disconnect the deion channel formed by at least one deionizer when the conductivity of the flowing coolant is less than or equal to a second preset conductivity, wherein the second preset conductivity is less than or equal to a first preset conductivity; or disconnect the deion channel formed by at least one deionizer when the leakage current of the flowing coolant is less than or equal to a second preset leakage current, wherein the second preset leakage current is less than or equal to the first preset leakage current.

[0013] In the above technical solution, when the conductivity or leakage current of the coolant decreases from a high value to a low value, by disconnecting the already conductive deionization channel of the charging pile, the deionizer can be prevented from operating when the ion concentration of the coolant flowing between the liquid cooling channel and the heat exchange channel is low. This can shorten the operating time of the deionizer, thereby extending the overall service life of one or more deionizers in the charging pile.

[0014] In one embodiment, one or more deionizers include a plurality of deionizers. The charging station is used when the heat exchanger is operating and the conductivity of the flowing coolant is greater than a first preset conductivity: when the difference between the conductivity of the flowing coolant and the first preset conductivity is less than a preset conductivity difference, the deionization channel formed by one of the plurality of deionizers is activated; or, when the difference between the conductivity of the flowing coolant and the first preset conductivity is greater than or equal to the preset conductivity difference, the deionization channel formed by at least two of the plurality of deionizers is activated.

[0015] In the above technical solution, when the conductivity of the coolant flowing between the heat exchange channel and the liquid cooling channel is greater than a preset value and the difference is significant, at least two deionizers can absorb ions from the coolant to more quickly reduce the ion concentration of the coolant. Conversely, when the conductivity of the coolant flowing between the heat exchange channel and the liquid cooling channel is greater than a preset value and the difference is small, only one deionizer can absorb ions from the coolant. This reduces the number of deionizers in operation while lowering the ion concentration of the coolant, thus helping to extend the overall service life of one or more deionizers in the charging pile.

[0016] In one embodiment, one or more deionizers include multiple deionizers. The charging pile is configured to, when the heat exchanger is operating, the wires are outputting electrical energy to the electric vehicle, and the leakage current of the flowing coolant is greater than a first preset leakage current: when the difference between the leakage current of the flowing coolant and the first preset leakage current is less than a preset leakage current difference, activate the deionization channel formed by one of the multiple deionizers; or, when the difference between the leakage current of the flowing coolant and the first preset leakage current is greater than or equal to the preset leakage current difference, activate the deionization channel formed by at least two of the multiple deionizers.

[0017] In the above technical solution, when the leakage current of the coolant flowing between the heat exchange channel and the liquid cooling channel is greater than a preset value and the difference is significant, at least two deionizers can absorb ions from the coolant to more quickly reduce the ion concentration of the coolant. Conversely, when the leakage current of the coolant flowing between the heat exchange channel and the liquid cooling channel is less than a preset value and the difference is small, one deionizer can absorb ions from the coolant. This reduces the number of deionizers in operation while lowering the ion concentration of the coolant, thus helping to extend the overall service life of one or more deionizers in the charging pile.

[0018] In one embodiment, one or more deionizers include a deionizer, and the deionization channel formed by the deionizer is in a conductive state. The charging pile is used to increase the coolant flow rate of the deionization channel formed by the deionizer when the heat exchanger is operating and the coolant flowing between the heat exchange channel and the liquid cooling channel meets preset conditions. The preset conditions include at least one condition: the conductivity of the flowing coolant is greater than a first preset conductivity, and the leakage current of the flowing coolant is greater than a first preset leakage current.

[0019] In the above technical solution, when the heat exchanger is operating, the coolant circulates between the heat exchange channel, the liquid cooling channel, and the deionization channel formed by a deionizer. In practical applications, when the ion concentration of the coolant is low, the charging station can initially control the coolant flow through the deionizer at a lower flow rate to reduce both the ion concentration and the physical impact of the coolant on the deionizer. Conversely, when the coolant's conductivity or leakage current is high, i.e., when the ion concentration is high, the charging station can increase the coolant flow rate through the deionizer to reduce the ion concentration more quickly. This not only maintains a relatively low ion concentration in the coolant circulating between the heat exchange channel and the liquid cooling channel but also reduces the aging rate of the deionizer, thereby extending its service life.

[0020] In one embodiment, the charging pile is further configured to: reduce the coolant flow rate of the deion channel formed by a deionizer when the conductivity of the flowing coolant is less than or equal to a second preset conductivity, wherein the second preset conductivity is less than or equal to a first preset conductivity; or, reduce the coolant flow rate of the deion channel formed by a deionizer when the leakage current of the flowing coolant is less than or equal to a second preset leakage current, wherein the second preset leakage current is less than or equal to the first preset leakage current.

[0021] In the above technical solution, when the conductivity or leakage current of the coolant circulating between the heat exchange channel, the liquid cooling channel, and the deionization channel formed by the deionizer decreases from a high value to a low value, that is, when the ion concentration of the coolant decreases from a high value to a low value, the charging pile can reduce the flow rate of the coolant through the deionizer, so that the coolant flows through the deionizer again at a lower flow rate. This not only maintains the ion concentration of the coolant at a relatively low level, but also reduces the aging rate of the deionizer, thereby helping to extend its service life.

[0022] In one embodiment, the charging pile further includes a multi-way valve and a conductivity sensor. Where the outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel via each deionizer, the coolant flowing out of the outlet of the liquid cooling channel flows into the outlet channel and each deionizer through the multi-way valve. Alternatively, where the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel via each deionizer, the coolant flowing out of the outlet of the heat exchange channel flows into the inlet channel and each deionizer through the multi-way valve. The conductivity sensor is used to detect the conductivity of the coolant flowing out of the outlet of the liquid cooling channel but not into the multi-way valve.

[0023] In the above technical solution, the conductivity sensor can detect the conductivity of the coolant flowing out of the liquid cooling channel and not diverted to the deionization channel. This improves the accuracy of the conductivity sensor in detecting the coolant conductivity, thereby enhancing the accuracy of the charging pile's determination of whether the deionization channel is open based on the coolant conductivity detected by the conductivity sensor.

[0024] In one embodiment, there are multiple deionizers connected in parallel. These parallel deionizers are connected between the liquid outlet of the liquid cooling channel and the liquid inlet of the heat exchange channel, or between the liquid outlet of the heat exchange channel and the liquid inlet of the liquid cooling channel. The charging station is used to: when the heat exchanger is operating, open the deion channel formed by at least one of the multiple deionizers and close the deion channels formed by the other deionizers (excluding the at least one deionizer).

[0025] In the above technical solution, the liquid cooling channel is connected in series with the heat exchange channel via multiple deionizers connected in parallel. Thus, when the heat exchanger is operating, the coolant flowing between the liquid cooling channel and the heat exchange channel can flow through at least one of the multiple deionizers, but not through the others. In other words, at least one deionizer is operational, while the others are inactive. This not only maintains the ion concentration of the coolant at a relatively low level but also reduces the aging rate of the inactive deionizers. Consequently, it helps extend the overall service life of the multiple deionizers in the charging pile.

[0026] In one embodiment, the charging pile is further configured to, when at least one of the deionizers in a plurality of deionizers is open and the deionizers formed by the other deionizers are closed: when the coolant flowing between the heat exchange channel and the liquid cooling channel meets preset conditions, disconnect the deionizers formed by at least one of the deionizers and open the deionizers formed by at least one of the other deionizers, wherein the preset conditions include at least one of the following conditions: the conductivity of the flowing coolant is greater than a first preset conductivity, and the leakage current of the flowing coolant is greater than a first preset leakage current.

[0027] In the above technical solution, when the conductivity or leakage current of the coolant exceeds a preset value, the charging pile confirms that the service life of the currently operating deionizer has been exhausted. In this case, the charging pile can activate the deionization channel formed by the currently non-operating deionizer, allowing it to start working. This reduces the ion concentration in the coolant flowing between the liquid cooling channel and the heat exchange channel, resulting in a relatively low ion concentration in the coolant. Furthermore, having some deionizers in the charging pile operate first, and then having the others start operating when those few deionizers reach the end of their service life, helps extend the overall service life of the multiple deionizers.

[0028] In one embodiment, the charging pile further includes a multi-way valve and a conductivity sensor. When multiple deionizers are connected in parallel between the outlet of the liquid cooling channel and the inlet of the heat exchange channel, the coolant flowing from the outlet of the liquid cooling channel flows into the multiple deionizers in parallel through the multi-way valve. Alternatively, when multiple deionizers are connected in parallel between the outlet of the heat exchange channel and the inlet of the liquid cooling channel, the coolant flowing from the outlet of the heat exchange channel flows into the multiple deionizers in parallel through the multi-way valve. The conductivity sensor is used to detect the conductivity of the coolant flowing from the outlet of the liquid cooling channel that does not flow into the multi-way valve.

[0029] In the above technical solution, the conductivity sensor can detect the conductivity of the coolant flowing out of the liquid cooling channel and not diverted to the deionization channel. This improves the accuracy of the conductivity sensor in detecting the coolant conductivity, thereby enhancing the accuracy of the charging pile's determination of whether the deionization channel is open based on the coolant conductivity detected by the conductivity sensor.

[0030] In one embodiment, the charging pile further includes a two-way valve. Where the outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel via a deionizer, the two-way valve is used to open the channel between the outlet of the liquid cooling channel and the deionizer, or the two-way valve is used to open the channel between the deionizer and the inlet of the heat exchange channel. Alternatively, where the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel via a deionizer, the two-way valve is used to open the channel between the outlet of the heat exchange channel and the deionizer, or the two-way valve is used to open the channel between the deionizer and the inlet of the liquid cooling channel. Thus, the on / off state of the deionization channel formed by the deionizer can be adjusted using the two-way valve. Attached Figure Description

[0031] Figure 1 is a schematic diagram of a charging pile charging an electric vehicle according to an embodiment of this application.

[0032] Figures 2 to 4 are schematic diagrams of the structure of a charging pile provided in the embodiments of this application.

[0033] Figure 5 is a schematic diagram of the specific structure of a charging pile shown in Figure 2 provided in an embodiment of this application.

[0034] Figure 6 is a schematic diagram of the specific structure of a charging pile shown in Figure 3 provided in an embodiment of this application.

[0035] Figure 7 is a schematic diagram of the process of connecting the deionization channel in a charging pile according to an embodiment of this application.

[0036] Figure 8 is a schematic diagram of the specific structure of the charging pile shown in Figure 3, provided in another embodiment of this application.

[0037] Figure 9 is a schematic diagram of the process for adjusting the coolant flow rate of the deionization channel in a charging pile according to an embodiment of this application.

[0038] Figures 10 and 11 are schematic diagrams of another charging pile provided in the embodiments of this application.

[0039] Figure 12 is a schematic diagram of the specific structure of a charging pile shown in Figure 10 provided in an embodiment of this application.

[0040] Figure 13 is a schematic diagram of the specific structure of a charging pile shown in Figure 11 provided in an embodiment of this application.

[0041] Figure 14 is a schematic diagram of another example of the deionization channel in a charging pile provided in the embodiments of this application. Detailed Implementation

[0042] To facilitate understanding of the embodiments of this application, the following points will be explained before introducing the embodiments of this application.

[0043] In the description of the embodiments of this application, "connection" can refer to either an electrical connection or a channel connection for the flow of coolant, refrigerant, etc. An electrical connection can be understood as the transmission of signals between two electrical components through direct or indirect electrical connections. For example, an electrical connection between A and B can be understood as a direct electrical connection between A and B, or as an electrical connection between A and B through one or more other electrical components.

[0044] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. Furthermore, in the description of the embodiments of this application, "one or more" and "at least one" both refer to one or more features, and "multiple" refers to two or more features.

[0045] In the description of the embodiments of this application, "and / or" is merely a way of describing the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0046] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0047] First, to facilitate understanding of the technical solutions provided in the embodiments of this application, the application scenarios applicable to the embodiments of this application will be introduced below.

[0048] Figure 1 is a schematic diagram of a scenario in which a charging pile 10 charges an electric vehicle 20, according to an embodiment of this application.

[0049] Referring to Figures 1(a) and 1(b), the charging pile 10 is used to receive the alternating current output from the power grid 30, convert the alternating current into stable direct current, and then supply it to the electric vehicle 20 to charge the electric vehicle 20. Alternatively, in some other embodiments, the electric vehicle 20 can also output electrical energy back to the power grid 30 through the charging pile 10.

[0050] In some embodiments, as shown in FIG1(a), the charging pile 10 is a split-type charging pile. Specifically, the charging pile 10 includes a charging host 11, one or more charging terminals 12, and one or more charging guns 13. The charging host 11 includes a charging host cabinet and multiple power converters (not shown in the figure) housed within the cabinet. Each charging terminal 12 is fixed with at least one of the one or more charging guns 13. The output terminals of the multiple power converters are connected to the charging gun 13 fixed to each charging terminal 12.

[0051] It should be understood that, in the embodiments of this application, the multiple power converters may include one or more alternating current-to-direct current (AC-DC) converters and one or more direct current-to-direct current (DC-DC) converters. The output terminal of each AC-DC converter is connected to the input terminal of each DC-DC converter via a DC bus, and the output terminal of each DC-DC converter is connected to the charging gun 13 via the charging terminal 12.

[0052] In practical implementation, each AC-DC converter converts the alternating current from the power grid 30 into direct current and outputs it to the DC bus. Each DC-DC converter further converts the DC power obtained from the DC bus and then delivers it to the charging gun 13 fixed to the charging terminal 12. The charging gun 13 delivers the received DC power to the electric vehicle 20 to charge the electric vehicle 20. For example, an electric vehicle 20 can simultaneously receive DC power from one or more charging guns 13.

[0053] It should also be understood that, in the embodiments of this application, the charging terminal 12 includes a charging terminal cabinet, a human-machine interface, a charging control unit, and a metering and billing unit, etc., for information interaction, energy transmission, and metering and billing with the electric vehicle 20.

[0054] Electric vehicle 20 is a means of transportation that is powered by electricity. Electric vehicle 20 includes pure electric vehicle (pure electric vehicle / battery electric vehicle, pure EV / battery EV), hybrid electric vehicle (HEV), range-extended electric vehicle (REEV), or plug-in hybrid electric vehicle (PHEV), etc.

[0055] In other embodiments, as shown in (b) of (1), the charging pile 10 is an integrated charging device. Specifically, the human-machine interface, charging control unit, metering and billing unit, and power distribution devices in the charging terminal 12 can be housed together with multiple power converters inside the charging host cabinet. In this case, the charging pile 10 may only include the charging host 11 and one or more charging guns 13 fixed to the charging host 11, without including the charging terminal 12.

[0056] Further referring to Figure 1(b), the charging gun 13 includes a cable 131 and a charging head 132. One end of the cable 131 is connected to the output of multiple power converters in the charging host 11, and the other end of the cable 131 is connected to the charging head 132, which is used to connect to the charging socket of the electric vehicle 20.

[0057] As described in the background section above, as the charging pile 10 continues to evolve into a supercharging charging pile, the charging power delivered by the charging pile 10 to the electric vehicle 20 through the charging gun 13 is constantly increasing. Consequently, the heat generated by the cable 131 also increases significantly, resulting in an increase in the overall heat dissipation of the charging gun 13. Some traditional heat dissipation methods, such as air cooling through fans and heat sinks, have very limited effectiveness and can no longer adequately meet the heat dissipation requirements of the cable 131.

[0058] Based on the above, this application provides a charging pile, which includes a charging gun, a heat exchanger, and a deionizer. The charging gun includes a wire and a liquid cooling channel. The wire is immersed in the coolant in the liquid cooling channel and is used to output electrical energy to an electric vehicle. The coolant in the liquid cooling channel is used to exchange heat with the wire. The heat exchanger's heat exchange channel is used to cool the coolant output from the liquid cooling channel and to transport the cooled coolant back to the liquid cooling channel. The outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel via the deionizer to form a deionization channel, or the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel via the deionizer to form a deionization channel.

[0059] In the charging pile provided in this embodiment, the wires in the charging gun can directly contact the coolant in the liquid cooling channel, thereby accelerating the transfer of heat from the wires to the coolant and improving the heat dissipation efficiency of the wires. Furthermore, a deionization channel is formed between the liquid cooling channel and the heat exchange channel of the heat exchanger via a deionizer. This allows the coolant to circulate among the liquid cooling channel, the heat exchange channel of the heat exchanger, and the deionization channel formed by the deionizer when the heat exchanger is operating, thereby reducing the ion concentration of the coolant. This prevents the increase in ion concentration of the coolant caused by direct contact between the wires and the coolant, the easy electrolysis of the coolant to produce hydrogen gas, and the decrease in the insulation performance of the coolant. This helps meet the heat dissipation requirements of the charging gun during high-power charging and improves the operational safety of the charging pile.

[0060] The charging pile provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0061] Figures 2 to 4 are schematic diagrams of the structure of a charging pile 40 provided in the embodiments of this application.

[0062] Referring to Figures 2 to 4, in some embodiments, the charging pile 40 includes a charging gun 41, which includes a wire 411 and a liquid cooling channel 412. The wire 411 is immersed in the coolant in the liquid cooling channel 412. The wire 411 is used to output electrical energy to an electric vehicle, and the coolant in the liquid cooling channel 412 is used for heat exchange with the wire 411.

[0063] In some embodiments, the charging pile 40 further includes a power converter 42, and the charging gun 41 further includes a charging gun head 413. The two ends of the wire 411 extend out of the liquid cooling channel 412 and are connected to the power converter 42 and the charging gun head 413 respectively. Thus, the wire 411 can be used to transmit the electrical energy output from the power converter 42 to the charging gun head 413, thereby charging the electric vehicle through the charging gun head 413. The wire 411 can be, for example, a copper wire formed by twisting together multiple single-core wires.

[0064] For example, the charging gun 41 also includes an insulating layer, which is sleeved on the outer periphery of the wire 411. The insulating layer forms a liquid cooling channel 412 for the flow of coolant between its inner circumferential surface facing the wire 411 and the wire 411. The coolant in the liquid cooling channel 412 is in direct contact with the wire 411. In this way, the speed at which heat is transferred from the wire 411 to the coolant can be accelerated, thereby improving the heat dissipation efficiency of the wire 411.

[0065] It should be understood that in this embodiment, the charging gun 41 may have multiple wires 411, which serve as positive and negative wires respectively. For example, Figures 2 to 4 exemplarily show that the charging gun 41 has two wires 411, one serving as the positive wire and the other as the negative wire. Correspondingly, as shown in Figure 2, the charging gun 41 may have two liquid cooling channels 412, with the positive and negative wires located in two liquid cooling channels 412 respectively.

[0066] In some embodiments, the charging gun 41 further includes a water-electricity separation device (not shown in the figure), and the end of the wire 411 can be separated from the liquid cooling channel 412 through the water-electricity separation device so as to be connected to the power converter 42 or the charging gun head 413.

[0067] It should also be understood that, in the embodiments of this application, the charging pile 40 can be a split charging pile as shown in Figure 1(a), or it can be an integrated charging pile as shown in Figure 1(b). For a detailed description of the charging pile 40, please refer to the relevant description of the embodiment shown in Figure 1, which will not be repeated here.

[0068] Referring again to Figures 2 to 4, in some embodiments, the charging pile 40 further includes a heat exchanger 43. The first heat exchange channel 431 of the heat exchanger 43 is used to cool the coolant output from the liquid cooling channel 412 and to transport the cooled coolant to the liquid cooling channel 412.

[0069] Specifically, as shown in Figures 2 to 4, the liquid inlet 4311 of the first heat exchange channel 431 is connected to the liquid outlet 4121 of the liquid cooling channel 412, and the liquid outlet 4312 of the first heat exchange channel 431 is connected to the liquid inlet 4122 of the liquid cooling channel 412. Furthermore, the heat exchanger 43 also includes a second heat exchange channel 432, which is used for heat exchange with the first heat exchange channel 431.

[0070] In one example, the charging station 40 also includes a compressor, an expansion valve, and a condenser (not shown in the figure), with the compressor, condenser, expansion valve, and second heat exchange channel 432 connected in sequence. Thus, by circulating the refrigerant between the compressor, condenser, expansion valve, and second heat exchange channel 432, the second heat exchange channel 432 can cool the coolant in the first heat exchange channel 431.

[0071] In another example, the second heat exchange channel 432 can be connected to the air in the environment where the heat exchanger 43 is located. In this way, the heat from the coolant flowing through the first heat exchange channel 431 can be transferred to the gas flowing through the second heat exchange channel 432, thereby achieving cooling of the coolant in the first heat exchange channel 431 by the second heat exchange channel 432. That is, the heat exchanger 43 can be an air-liquid heat exchanger.

[0072] Based on the above design, the coolant can circulate between the liquid cooling channel 412 and the first heat exchange channel 431. When the coolant flows in the liquid cooling channel 412, it can absorb the heat from the wire 411, and then the coolant carrying the heat flows into the first heat exchange channel 431. At the same time, the second heat exchange channel 432 can cool the coolant flowing in the first heat exchange channel 431, and the cooled coolant flows back into the liquid cooling channel 412, thereby achieving liquid cooling of the wire 411.

[0073] Referring again to Figures 2 to 4, in some embodiments, the charging pile 40 further includes a deionizer 44. As shown in Figure 2, the outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 via the deionizer 44 to form a deionization channel M1. Alternatively, as shown in Figures 3 and 4, the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via the deionizer 44 to form a deionization channel M1.

[0074] Based on the above design, the first heat exchange channel 431 and the liquid cooling channel 412 can be connected by a deionization channel M1 formed by the deionizer 44. In this way, the coolant flowing out of the liquid cooling channel 412 can flow into the first heat exchange channel 431 through the deionization channel M1, or the coolant flowing out of the first heat exchange channel 431 can flow into the liquid cooling channel 412 through the deionization channel M1. Furthermore, the anion exchange resin and cation exchange resin of the deionizer 44 in the deionization channel M1 can adsorb ions in the flowing coolant, thereby reducing the ion concentration of the coolant and thus reducing the conductivity of the coolant.

[0075] It should be understood that in practical applications, the direct contact between the wire 411 in the charging gun 41 and the coolant can cause ions from the wire 411 to enter the coolant through galvanic cells, electrolytic cells, etc., resulting in an increase in the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431, and consequently, an increase in the conductivity of the coolant. On the one hand, during the process of the wire 411 transmitting charging power to the electric vehicle, the coolant in the liquid cooling channel 412 is also subjected to a high voltage of hundreds or thousands of volts. The high conductivity makes the coolant prone to electrolysis under high voltage, producing a large amount of hydrogen gas. The presence of hydrogen gas may cause excessive pressure in the cooling system of the charging pile 40, affecting the normal operation of the cooling system. Furthermore, the presence of hydrogen gas also increases the risk of corrosion of metal components and system explosion. On the other hand, the high conductivity also causes a decrease in the insulation performance of the coolant. All of these factors affect the operational safety of the charging pile 40.

[0076] Therefore, in this embodiment, when the heat exchanger 43 is operating, by allowing the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431 to flow through the deionization channel M1 formed by the deionizer 44, the ion concentration of the coolant can be reduced, thereby decreasing the conductivity of the coolant. This prevents the problems of increased ion concentration in the coolant due to direct contact between the wire 411 and the coolant, easy electrolysis of the coolant, and decreased insulation performance of the coolant. Furthermore, this helps meet the heat dissipation requirements of the charging gun 41 during high-power charging and improves the operational safety of the charging pile 40.

[0077] It should be understood that, in specific implementation, the number of deionizers 44 in the charging pile 40 may be one or more. These one or more deionizers 44 may be connected in parallel with the channel between the liquid cooling channel 412 and the first heat exchange channel 431. Alternatively, these one or more deionizers 44 may also be directly connected in series between the liquid cooling channel 412 and the first heat exchange channel 431.

[0078] For example, in some embodiments, referring to Figures 2 to 4, the charging pile 40 further includes an outlet channel M2 and an inlet channel M3. The outlet channel M2 is connected between the outlet 4121 of the liquid cooling channel 412 and the inlet 4311 of the first heat exchange channel 431, and the inlet channel M3 is connected between the outlet 4312 of the first heat exchange channel 431 and the inlet 4122 of the liquid cooling channel 412.

[0079] Furthermore, the number of deionizers 44 in the charging pile 40 can be one or more. The outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 through each of the one or more deionizers 44, and the deion channel M1 formed by each deionizer 44 is connected to the outlet channel M2. Alternatively, the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 through each of the one or more deionizers 44, and the deion channel M1 formed by each deionizer 44 is connected in parallel to the inlet channel M3. In other words, when the charging pile 40 includes multiple deionizers 44, the multiple deionizers 44 can form multiple deion channels M1, and these multiple deion channels M1 are connected in parallel and then connected in parallel to the outlet channel M2 or the inlet channel M3.

[0080] For example, as shown in Figures 2 and 3, the charging pile 40 includes a deionizer 44. As shown in Figure 2, the outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 via the deionizer 44 to form a deionization channel M1, and this deionization channel M1 is connected in parallel with the outlet channel M2. Alternatively, as shown in Figure 3, the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via the deionizer 44 to form a deionization channel M1, and this deionization channel M1 is connected in parallel with the inlet channel M3.

[0081] For example, as shown in Figure 4, the charging pile 40 includes two deionizers 44. The outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 through the two deionizers 44 to form two deion channels M1. The two deion channels M1 are connected in parallel and then connected in parallel with the inlet channel M3.

[0082] In the above technical solution, each deionizer 44 in the charging pile 40 forms a deionization channel M1 connected in parallel with either an outlet channel M2 or an inlet channel M3. When the ion concentration of the coolant flowing between the liquid cooling channel 412 and the heat exchange channel 431 is low, the charging pile 40 can disconnect the deionization channel M1 formed by each deionizer 44. At this time, the coolant can circulate between the liquid cooling channel 412 and the first heat exchange channel 431 through the outlet channel M2 and the inlet channel M3. Conversely, when the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431 is high, the charging pile 40 can activate at least one deionization channel M1 formed by a deionizer 44. This allows each deionizer 44 to operate only when the ion concentration of the coolant is high, thereby reducing the ion concentration of the coolant and shortening the operating time of the deionizer 44. Furthermore, this helps to extend the overall service life of one or more deionizers 44 in the charging pile 40.

[0083] The following section uses the charging pile 40 shown in Figures 2 and 3, which includes a deionizer 44, as an example to further describe the other structures in the charging pile 40.

[0084] Figure 5 is a schematic diagram of the specific structure of the charging pile 40 shown in Figure 2, provided in an embodiment of this application. Figure 6 is a schematic diagram of the specific structure of the charging pile 40 shown in Figure 3, provided in an embodiment of this application.

[0085] Referring to Figures 5 and 6, in some embodiments, the charging pile 40 also includes two multi-way valves, namely multi-way valve 45 and multi-way valve 46.

[0086] As shown in Figure 5, when the outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 via each deionizer 44 in the charging pile 40, the coolant flowing out of the outlet 4121 of the liquid cooling channel 412 flows into the outlet channel M2 and each deionizer 44 through the multi-way valve 45, and the coolant flowing out of the outlet channel M2 and each deionizer 44 flows into the inlet 4311 of the first heat exchange channel 431 through the multi-way valve 46. In other words, the multi-way valve 45 is used to achieve a flow-diverting connection between the liquid cooling channel 412 and the outlet channel M2 and each deionizer 44, and the multi-way valve 46 is used to achieve a flow-collecting connection between the outlet channel M2 and each deionizer 44 and the first heat exchange channel 431.

[0087] Alternatively, as shown in Figure 6, when the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via each deionizer 44, the coolant flowing out of the outlet 4312 of the first heat exchange channel 431 flows into the inlet channel M3 and each deionizer 44 via the multi-way valve 45, and the coolant flowing out of the inlet channel M3 and each deionizer 44 flows into the inlet 4122 of the liquid cooling channel 412 via the multi-way valve 46. In other words, the multi-way valve 45 is used to achieve a split connection between the first heat exchange channel 431 and the inlet channel M3 and each deionizer 44, and the multi-way valve 46 is used to achieve a combined connection between the inlet channel M3 and each deionizer 44 and the liquid cooling channel 412.

[0088] Specifically, taking the example shown in Figure 6, where the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via a deionizer 44, the multi-way valves 45 and 46 are three-way valves. Specifically, the first valve port 451 of the multi-way valve 45 is connected to the outlet 4312 of the first heat exchange channel 431, the second valve port 452 is connected to the inlet of the deionizer 44, and the third valve port 453 is connected to the inlet of the inlet channel M3. Similarly, the first valve port 461 of the multi-way valve 46 is connected to the outlet of the inlet channel M3, the second valve port 462 is connected to the outlet of the deionizer 44, and the third valve port 463 is connected to the inlet 4122 of the liquid cooling channel 412.

[0089] It should be understood that the three-way valves 45 and 46 described above are merely examples. For instance, in some other embodiments, when the outlet 4312 of the first heat exchange channel 431 shown in Figure 6 is connected to the inlet 4122 of the liquid cooling channel 412 via two deionizers 44, both the multi-way valves 45 and 46 are four-way valves. Specifically, the four ports of the multi-way valve 45 are connected one-to-one with the outlet 4312 of the first heat exchange channel 431, the inlet of the liquid inlet channel M3, and the inlets of the two deionizers 44; similarly, the four ports of the multi-way valve 46 are connected one-to-one with the inlet 4122 of the liquid cooling channel 412, the outlet of the liquid inlet channel M3, and the outlets of the two deionizers 44.

[0090] Based on the above design, the multi-way valves 45 and 46 can be used to achieve the diversion and collection of coolant between the liquid cooling channel 412 and the first heat exchange channel 431, thereby realizing the parallel connection of the deionization channel M1 with the liquid outlet channel M2 or the liquid inlet channel M3.

[0091] In some embodiments, when the multi-way valves 45 and 46 have the function of adjusting the on / off state of the channel between any two of their valve ports according to the control of the charging pile 40, the charging pile 40 can also switch the flow channel of the coolant between the liquid cooling channel 412 and the first heat exchange channel 431 by adjusting the on / off state of the channel between different valve ports in the multi-way valves 45 and 46.

[0092] For example, taking the example of the outlet 4312 of the first heat exchange channel 431 connected to the inlet 4122 of the liquid cooling channel 412 via a deionizer 44, when the ion concentration of the coolant is high, the charging pile 40 can open the channels between the first valve port 451 and the third valve port 453 of the multi-way valve 45, as well as between the first valve port 451 and the second valve port 452, and also open the channels between the first valve port 461 and the third valve port 463 of the multi-way valve 46, as well as between the first valve port 461 and the second valve port 462. In this way, the coolant can circulate between the liquid cooling channel 412 and the first heat exchange channel 431 through the outlet channel M2, the inlet channel M3, and the deionizer M1. This, in turn, can reduce the ion concentration of the coolant.

[0093] In other embodiments, referring to Figures 5 and 6, when the multi-way valves 45 and 46 do not have the function of adjusting the on / off state of the channel between any two of their valve ports according to the control of the charging pile 40, that is, when the multi-way valves 45 and 46 are only used to realize the diversion and collection of coolant, the charging pile 40 may also include a two-way valve 47.

[0094] As shown in Figure 5, when the outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 via the deionizer 44, the two-way valve 47 is used to open the channel between the outlet 4121 of the liquid cooling channel 412 and the deionizer 44, or the two-way valve 47 is used to open the channel between the deionizer 44 and the inlet 4311 of the first heat exchange channel 431. Alternatively, as shown in Figure 6, when the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via the deionizer 44, the two-way valve 47 is used to open the channel between the outlet 4312 of the first heat exchange channel 431 and the deionizer 44, or the two-way valve 47 is used to open the channel between the deionizer 44 and the inlet 4122 of the liquid cooling channel 412.

[0095] It should be understood that, in specific implementation, when there are one or more deionizers 44 in the charging pile 40, there can also be one or more two-way valves 47. Each of the one or more two-way valves 47 is connected to one or more deionizers 44 in the charging pile 40 in a one-to-one correspondence, and each two-way valve 47 is used to open the deionization channel M1 formed by the corresponding deionizer 44.

[0096] Specifically, taking the example shown in Figure 6, where the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via a deionizer 44, the charging pile 40 includes a two-way valve 47. The two ports of the two-way valve 47 are respectively connected to the outlet 4312 of the first heat exchange channel 431 and the inlet of the deionizer 44. Thus, the deion channel M1 formed by the deionizer 44 includes a passage from the third port 453 of the multi-way valve 45, the two-way valve 47, the deionizer 44, to the second port 462 of the multi-way valve 46. Alternatively, the two ports of the two-way valve 47 are respectively connected to the outlet of the deionizer 44 and the inlet 4122 of the liquid cooling channel 412. Thus, the deion channel M1 formed by the deionizer 44 includes a passage from the third valve port 453 of the multi-way valve 45, the deionizer 44, the two-way valve 47 to the second valve port 462 of the multi-way valve 46.

[0097] Based on the above design, the charging pile 40 can adjust the on / off state of the deion channel M1 formed by each deionizer 44 by adjusting the on / off state of the channel between the two valve ports of the two-way valve 47 corresponding to each deionizer 44.

[0098] For example, taking the example of the outlet 4312 of the first heat exchange channel 431 connected to the inlet 4122 of the liquid cooling channel 412 via a deionizer 44, when the ion concentration of the coolant is high, the charging pile 40 can open the channel between the two ports of the two-way valve 47. In this way, the coolant can circulate between the liquid cooling channel 412 and the first heat exchange channel 431 through the outlet channel M2, the inlet channel M3, and the deionizer M1, thereby reducing the ion concentration of the coolant.

[0099] In some embodiments, continuing with Figures 5 and 6, in order for the charging pile 40 to acquire the ion concentration of the coolant between the liquid cooling channel 412 and the first heat exchange channel 431 in real time, the charging pile 40 may also include at least one of a conductivity sensor 48 and a leakage current detection device 49.

[0100] The conductivity sensor 48 is used to detect the conductivity of the coolant between the liquid cooling channel 412 and the first heat exchange channel 431, and the leakage current detection device 49 is used to detect the leakage current of the coolant between the liquid cooling channel 412 and the first heat exchange channel 431 when the wire 411 outputs electrical energy to the electric vehicle, that is, when the wire 411 is energized.

[0101] It should be understood that the conductivity of the coolant is positively correlated with its ion concentration. That is, as the ion concentration of the coolant increases, its conductivity increases, and as the ion concentration decreases, its conductivity decreases. Furthermore, when the wire 411 outputs electrical energy to the electric vehicle, the leakage current in the coolant is also positively correlated with its ion concentration. Therefore, in this embodiment, the charging pile 40 can determine the level of the coolant's ion concentration based on the coolant conductivity detected by the conductivity sensor 48 and / or the coolant leakage current detected by the leakage current detection device 49.

[0102] In a specific implementation, in one example, referring to Figures 5 and 6, the conductivity sensor 48 is used to detect the conductivity of the coolant flowing out of the outlet 4121 of the cold channel 412 and not flowing into the multi-way valve 45.

[0103] For example, as shown in Figure 5, when the outlet 4121 of the liquid cooling channel 412 is connected to the outlet channel M2 and each deionizer 44 via the multi-way valve 45, the conductivity sensor 48 is used to detect the conductivity of the coolant in the channel between the outlet 4121 of the liquid cooling channel 412 and the first valve port 451 of the multi-way valve 45.

[0104] For example, as shown in Figure 6, when the outlet 4312 of the first heat exchange channel 431 is connected to the inlet channel M3 and each deionizer 44 via the multi-way valve 45, the conductivity sensor 48 is used to detect the conductivity of the coolant in the channel between the outlet 4121 of the liquid cooling channel 412 and the inlet 4311 of the first heat exchange channel 431, or in the channel between the outlet 4312 of the first heat exchange channel 431 and the first valve port 451 of the multi-way valve 45.

[0105] Based on the above design, the conductivity sensor 48 can detect the conductivity of the coolant flowing out of the liquid cooling channel 412 and not diverted to the deionization channel M1. This improves the accuracy of the conductivity sensor 48 in detecting the coolant conductivity, thereby enhancing the accuracy of the charging pile 40 in determining whether the deionization channel M1 is open based on the coolant conductivity detected by the conductivity sensor 48.

[0106] In another example, referring to Figures 5 and 6, the outlets 4121 of the two liquid cooling channels 412 containing the positive and negative wires in the charging gun 41 can be connected to the inlet 4311 of the first heat exchange channel 431 via a three-way valve, and the inlets 4122 of the two liquid cooling channels 412 can be connected to the outlet 4312 of the first heat exchange channel 431 via another three-way valve. That is, the coolant flowing out of the two liquid cooling channels 412 is collected into one channel by a three-way valve and flows into the first heat exchange channel 431, while the coolant flowing out of the first heat exchange channel 431 is diverted to the two liquid cooling channels 412 via another three-way valve.

[0107] Furthermore, in order for the leakage current detection device 49 to detect the leakage current of the coolant during the process of the wire 411 outputting electrical energy to the electric vehicle, when the positive and negative wires output electrical energy to the electric vehicle, the leakage current detection device 49 can be used to detect the leakage current of the coolant in the channel between the outlet 4121 of the two liquid cooling channels 412 and a three-way valve, or in the channel between the inlet 4122 of the two liquid cooling channels 412 and another three-way valve.

[0108] Based on the above design, the leakage current detection device 49 can detect the leakage current of the coolant in the circuit formed by the positive and negative wires. This improves the accuracy of the coolant leakage current detection device 49 in detecting the leakage current during the process of the wire 411 outputting electrical energy to the electric vehicle, thereby improving the accuracy of the charging pile 40 in determining whether the deionization channel M1 is open based on the coolant leakage current detected by the leakage current detection device 49.

[0109] In some embodiments, continuing with Figures 5 and 6, the charging pile 40 also includes a liquid storage tank 410. The liquid storage tank 410 can be connected to the liquid inlet channel M3, or it can be connected in series with the liquid inlet channel M3.

[0110] For example, as shown in Figure 5, the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via a liquid storage tank 410 to form an inlet channel M3. Specifically, the inlet 4101 of the liquid storage tank 410 is connected to the outlet 4312 of the first heat exchange channel 431, and the outlet 4102 of the liquid storage tank 410 is connected to the inlet 4122 of the liquid cooling channel 412. That is, the liquid storage tank 410 is connected within the inlet channel M3.

[0111] For example, as shown in Figure 6, the third valve port 453 of the multi-way valve 45 is connected to the first valve port 461 of the multi-way valve 46 via the liquid storage tank 410 to form an inlet channel M3. The inlet port 4101 of the liquid storage tank 410 is connected to the third valve port 453 of the multi-way valve 45, and the outlet port 4102 of the liquid storage tank 410 is connected to the first valve port 461 of the multi-way valve 46. That is, the liquid storage tank 410 is also connected in the inlet channel M3, and at this time, the liquid storage tank 410 is also connected in parallel with the deionizer 44.

[0112] For example, as shown in Figure 6, the third valve port 463 of the multi-way valve 46 can be connected to the inlet port 4122 of the liquid cooling channel 412 through the liquid storage tank 410. In this case, the liquid inlet channel M3 connecting the third valve port 453 of the multi-way valve 45 and the first valve port 461 of the multi-way valve 46 is connected in series with the liquid storage tank 410.

[0113] Based on the above design, the liquid storage tank 410 can serve as a cold water tank in the charging pile 40. The coolant, after being cooled by the first heat exchange channel 431, can flow into the liquid storage tank 410 in advance for storage. Then, when the wire 411 of the charging gun 41 needs to dissipate heat, the coolant stored in the liquid storage tank 410 can quickly flow into the liquid cooling channel 412 through the outlet 4102 of the liquid storage tank 410, thereby increasing the rate at which the liquid cooling channel 412 dissipates heat from the wire 411.

[0114] In some embodiments, continuing with Figures 5 and 6, the charging pile 40 also includes a water pump 420. As shown in Figures 5 and 6, the water pump 420 can be connected to the liquid inlet channel M3, or the water pump 420 can be connected in series with the liquid inlet channel M3.

[0115] For example, as shown in Figure 5, the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 via a storage tank 410 and a water pump 420 to form an inlet channel M3. That is, the water pump 420 is connected in the inlet channel M3. As another example, as shown in Figure 6, the water pump 420 is connected between the third valve port 463 of the multi-way valve 46 and the inlet 4122 of the liquid cooling channel 412. That is, the water pump 420 is connected in series with the inlet channel M3.

[0116] Based on the above design, the coolant output from the liquid storage tank 410 can be driven by the water pump 420 to circulate between the liquid cooling channel 412 and the first heat exchange channel 431, thereby achieving liquid cooling heat dissipation for the wire 411.

[0117] It should be understood that the specific location of the water pump 420 described above is only illustrative. For example, in some other embodiments, the water pump 420 may also be connected to the outlet channel M2 between the liquid outlet 4121 of the liquid cooling channel 412 and the liquid inlet 4311 of the first heat exchange channel 431.

[0118] The above describes the specific structure of the charging pile 40. The following describes the specific process of the charging pile 40 connecting the deion channel M1 and the liquid outlet channel M2 or the liquid inlet channel M3 in the charging pile 40 as an example.

[0119] In some embodiments, the charging pile 40 is used to activate the deion channel M1 formed by at least one of the one or more deionizers 44 of the charging pile 40 when the heat exchanger 43 is operating and the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 meets preset conditions. The preset conditions include at least one of the following: the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset conductivity; and the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset leakage current.

[0120] Specifically, referring to Figures 5 and 6, when the heat exchanger 43 is operating, the charging pile 40 can detect the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 in real time through the conductivity sensor 48. Alternatively, when the charging gun 41 is powered on, the charging pile 40 can also detect the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 in real time through the leakage current detection device 49. In this way, the charging pile 40 can determine the ion concentration of the coolant based on its conductivity or conductivity, and thus activate at least one deion channel M1 formed by the deionizer 44 when the ion concentration of the coolant is high.

[0121] For example, referring to Figure 7, which is a schematic diagram of the process of the charging pile 40 using the conductivity of the coolant as a criterion to activate the deionization channel M1 in the charging pile 40. When the heat exchanger 43 is working, the coolant circulates between the first heat exchange channel 431 and the liquid cooling channel 412, and the charging pile 40 can perform the following steps.

[0122] In step S51, the charging pile 40 is used to detect the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412.

[0123] Specifically, referring to Figures 5 and 6, the charging pile 40 can detect the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 in real time through the conductivity sensor 48.

[0124] In step S52, the charging pile 40 determines whether the conductivity of the detected coolant is greater than a first preset conductivity. Further, if the charging pile 40 confirms that the conductivity of the detected coolant is not greater than the first preset conductivity, the charging pile 40 executes step S53. Alternatively, if the charging pile 40 confirms that the conductivity of the detected coolant is greater than the first preset conductivity, the charging pile 40 executes step S54.

[0125] In step S53, if the detected conductivity of the coolant is not greater than the first preset conductivity, the charging pile 40 is used to disconnect the deion channel M1 formed by one or more deionizers 44 in the charging pile 40.

[0126] Specifically, if the conductivity of the coolant detected by the conductivity sensor 48 is not greater than a first preset conductivity, that is, if the detected conductivity of the coolant is less than or equal to the first preset conductivity, the charging pile 40 confirms that the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is low, that is, the ion concentration of the coolant is low, thereby confirming that the deionizer 44 in the charging pile 40 does not need to operate. In this case, the charging pile 40 can disconnect the deion channel M1 formed by each deionizer 44.

[0127] For example, taking the charging pile 40 shown in Figures 5 and 6 as an example, which includes a deionizer 44, the charging pile 40 can disconnect the deionization channel M1 formed by the deionizer 44 by disconnecting the passage between the two valve ports of the two-way valve 47 corresponding to the deionizer 44. At this time, the coolant can circulate only through the outlet channel M2 and the inlet channel M3 between the liquid cooling channel 412 and the first heat exchange channel 431, without flowing through the deionizer 44 in the charging pile 40.

[0128] In step S54, if the detected conductivity of the coolant is greater than the first preset conductivity, the charging pile 40 is used to activate the deion channel M1 formed by at least one of the one or more deionizers 44 in the charging pile 40.

[0129] Specifically, if the conductivity of the coolant detected by the conductivity sensor 48 is greater than a first preset conductivity, the charging pile 40 confirms that the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is high, meaning the ion concentration of the coolant is high. Therefore, the charging pile 40 confirms that the deionizer 44 in the charging pile 40 needs to operate. In this case, the charging pile 40 can activate the deion channel M1 formed by at least one deionizer 44.

[0130] For example, taking the charging pile 40 shown in Figures 5 and 6 as an example that includes a deionizer 44, the charging pile 40 can open the deion channel M1 formed by the deionizer 44 by connecting the channel between the two valve ports of the two-way valve 47 corresponding to the deionizer 44. Alternatively, referring to Figures 4 to 6, when the charging pile 40 includes two deionizers 44, the charging pile 40 can also open the two deion channels M1 formed by the two deionizers 44 by connecting the two two-way valves 47 corresponding to the two deionizers 44.

[0131] Therefore, the coolant can circulate between the liquid cooling channel 412 and the first heat exchange channel 431 through the outlet channel M2, the inlet channel M3 and the open deion channel M1, so as to reduce the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431 through the deionizer 44 in the open deion channel M1, thereby reducing the conductivity of the coolant.

[0132] It should be understood that the charging pile 40 can also, when the wire 411 is supplying electrical energy to the electric vehicle, i.e., when the charging gun 41 is energized, conduct the deionization channel M1 formed by at least one deionizer 44 in the charging pile 40 according to the leakage current of the coolant. The specific process is similar to the process described above where the charging pile 40 conducts the deionization channel M1 formed by at least one deionizer 44 according to the conductivity of the coolant, and will not be repeated here.

[0133] In the above technical solution, when the conductivity or leakage current of the coolant in the charging pile exceeds a preset value, the deionization channel M1 formed by at least one deionizer 44 in the charging pile 40 is activated. This allows the deionizer 44 to operate only when the ion concentration of the coolant flowing between the liquid-cooled channel 412 and the first heat exchange channel 431 is high, thereby reducing the ion concentration of the coolant and shortening the operating time of the deionizer 44. Furthermore, this helps to extend the overall service life of one or more deionizers 44 in the charging pile 40.

[0134] Furthermore, in some embodiments, one or more deionizers 44 of the charging pile 40 include multiple deionizers 44. Specifically, the charging pile 40 is used when the heat exchanger 43 is operating and the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset conductivity: when the difference between the conductivity of the flowing coolant and the first preset conductivity is less than the preset conductivity difference, the deion channel M1 formed by one of the multiple deionizers 44 is activated; or, when the difference between the conductivity of the flowing coolant and the first preset conductivity is greater than or equal to the preset conductivity difference, the deion channel M1 formed by at least two of the multiple deionizers 44 is activated.

[0135] Based on the above design, when the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a preset value and the difference is significant, ions in the coolant can be absorbed by at least two deionizers 44 to more quickly reduce the ion concentration of the coolant. Conversely, when the conductivity of the flowing coolant is greater than the preset value and the difference is small, ions in the coolant can be absorbed by one deionizer 44. This reduces the number of deionizers 44 in operation while lowering the ion concentration of the coolant, thereby improving the overall service life of one or more deionizers 44 in the charging pile 40.

[0136] In other embodiments, one or more deionizers 44 of the charging pile 40 include a plurality of deionizers 44. Specifically, the charging pile 40 is used to conduct a deion channel M1 formed by one of the multiple deionizers 44 when the heat exchanger 43 is working, the wire 411 outputs electrical energy to the electric vehicle, and the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset leakage current, and the difference between the leakage current of the flowing coolant and the first preset leakage current is less than a preset leakage current difference; or, when the difference between the conductivity of the flowing coolant and the first preset leakage current is greater than or equal to the preset leakage current difference, the deion channel M1 formed by at least two of the multiple deionizers 44 is conducted.

[0137] Based on the above design, when the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a preset value and the difference is significant, at least two deionizers 44 can absorb ions from the coolant to more quickly reduce the ion concentration of the coolant. Conversely, when the leakage current of the flowing coolant is greater than the preset value and the difference is small, one deionizer 44 can absorb ions from the coolant. This reduces the number of deionizers 44 in operation while lowering the ion concentration of the coolant, thereby improving the overall service life of one or more deionizers 44 in the charging pile 40.

[0138] In some embodiments, the charging pile 40 is further configured to disconnect the deion channel M1 formed by at least one deionizer 44 when the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to a second preset conductivity, provided that the deion channel M1 formed by at least one deionizer 44 in one or more deionizers 44 of the charging pile 40 is already open. Alternatively, the charging pile 40 is configured to disconnect the deion channel M1 formed by at least one deionizer 44 when the heat exchanger 43 is operating, the wire 411 outputs electrical energy to the electric vehicle, and the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to a second preset leakage current. Wherein, the second preset conductivity is less than or equal to the first preset conductivity, and the second preset leakage current is less than or equal to the first preset leakage current.

[0139] Specifically, referring to Figure 7, after the charging pile 40 executes step S54, the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 flows through the deionizer 44 in the already connected deionization channel M1. In this way, the deionizer 44 can absorb ions from the coolant, thereby reducing the ion concentration of the coolant. Under these circumstances, the charging pile 40 can continue to execute step S55.

[0140] In step S55, the charging pile 40 is used to determine whether the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to the second preset conductivity.

[0141] Specifically, during the ion adsorption process of the deionizer 44, the charging pile 40 can detect the conductivity of the coolant in real time via the conductivity sensor 48. Furthermore, if the detected coolant conductivity is greater than a second preset conductivity, the charging pile 40 confirms that the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 remains high, indicating a high ion concentration in the coolant. At this time, the charging pile 40 confirms that the already conductive deionization channel M1 remains conductive to continue absorbing ions from the coolant through the deionizer 44. Conversely, if the detected coolant conductivity is less than or equal to the second preset conductivity, the charging pile 40 confirms that the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is low, indicating a low ion concentration in the coolant. At this time, the charging pile 40 executes step S56.

[0142] In step S56, if the detected conductivity of the coolant is less than or equal to the second preset conductivity, the charging pile 40 is used to disconnect the deion channel M1 formed by at least one deionizer 44 that has been connected.

[0143] Specifically, taking the charging pile 40 shown in Figures 5 and 6 as an example, which includes a deionizer 44, the charging pile 40 can disconnect the deionization channel M1 formed by the deionizer 44 by disconnecting the passage between the two valve ports of the two-way valve 47 corresponding to the deionizer 44. In this way, the coolant can circulate only through the outlet channel M2 and the inlet channel M3 between the liquid cooling channel 412 and the first heat exchange channel 431, without flowing through the deionizer 44.

[0144] It should be understood that the process by which the charging pile 40 disconnects the deion channel M1 formed by at least one deionizer 44 that has been turned on based on the leakage current of the coolant is similar to the process by which the charging pile 40 disconnects the deion channel M1 based on the conductivity of the coolant, and will not be described again here.

[0145] In the above technical solution, when the conductivity or leakage current of the coolant decreases from a large value to a small value, by disconnecting the already connected deionization channel M1 of the charging pile 40, the deionizer 44 can be prevented from operating when the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431 is low. This can shorten the operating time of the deionizer 44, thereby extending the overall service life of one or more deionizers 44 in the charging pile 40.

[0146] Furthermore, by setting a second preset conductivity lower than a first preset conductivity, frequent on / off switching of the deionization channel M1 can be prevented when the conductivity of the coolant decreases from greater than the first preset conductivity to equal to the first preset conductivity. Similarly, by setting a second preset leakage current lower than a first preset leakage current, frequent on / off switching of the deionization channel M1 can be prevented when the conductivity of the coolant decreases from greater than the first preset leakage current to equal to the first preset leakage current.

[0147] Figure 8 is a schematic diagram of the specific structure of the charging pile 40 shown in Figure 3, provided in another embodiment of this application.

[0148] Referring to Figure 8, in some embodiments, the number of deionizers 44 in the charging pile 40 may be one. Similar to the embodiments shown in Figures 5 and 6, this single deionizer 44 forms a deion channel M1 connected in parallel with either an outlet channel M2 or an inlet channel M3. For example, Figure 8 exemplarily illustrates this parallel connection of the single deion channel M1 and the inlet channel M3.

[0149] Unlike the embodiments shown in Figures 5 and 6, in the charging pile 40 shown in Figure 8, the deionization channel M1 formed by the deionizer 44 can always be in a conductive state. Thus, the multi-way valves 45 and 46 can be used only for the diversion and collection of coolant, and the two-way valve 47 corresponding to the deionizer 44 may not be provided in the charging pile 40. In this way, when the heat exchanger 43 is operating, the coolant can continuously flow through the deionization channel M1 formed by the deionizer 44, thereby reducing the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431, and maintaining the ion concentration of the coolant at a relatively low level.

[0150] In some embodiments, continuing to refer to FIG8, the charging pile 40 also includes a flow regulating valve 430, which is used to regulate the coolant flow rate of the deion channel M1 formed by a deionizer 44 in the charging pile 40.

[0151] In a specific implementation, as shown in Figure 8, the third port 453 of the multi-way valve 45 is connected to the first port 461 of the multi-way valve 46 via a flow regulating valve 430 to form an inlet channel M3. That is, the flow regulating valve 430 is connected in the inlet channel M3. Thus, the flow regulating valve 430 can be used to regulate the flow rate of the coolant diverted from the first heat exchange channel 431 to the inlet channel M3. Since the flow rate of the coolant diverted from the first heat exchange channel 431 to the deionization channel M1 is negatively correlated with the flow rate of the coolant diverted from the first heat exchange channel 431 to the inlet channel M3, the flow regulating valve 430 can be used to regulate the flow rate of the coolant in the deionization channel M1.

[0152] For example, as the flow regulating valve 430 increases the flow rate of coolant diverted from the first heat exchange channel 431 to the liquid inlet channel M3, the flow rate of coolant diverted from the first heat exchange channel 431 to the liquid inlet channel M3 decreases accordingly. Alternatively, as the flow regulating valve 430 decreases the flow rate of coolant diverted from the first heat exchange channel 431 to the liquid inlet channel M3, the flow rate of coolant diverted from the first heat exchange channel 431 to the liquid inlet channel M3 increases accordingly. This, in turn, achieves the regulation of the coolant flow rate in the deionization channel M1.

[0153] In the above technical solution, by connecting the flow regulating valve 430 to the liquid inlet channel M3, not only can the flow rate of the coolant in the deion channel M1 connected in parallel with the liquid inlet channel M3 be regulated, but the flow resistance of the coolant in the deion channel M1 can also be reduced.

[0154] It should be understood that the above-described flow control valve 430 connected to the inlet channel M3 is merely an example. For instance, in some other embodiments, the flow control valve 430 may also be directly connected to the deionization channel M1, i.e., the flow control valve 430 is connected in series with the deionizer 44.

[0155] It should also be understood that any details regarding the charging pile 40 not described above can be found in the relevant descriptions of the embodiments shown in Figures 5 and 6, and will not be repeated here.

[0156] The following describes the specific working process of the charging pile 40 mentioned above, which includes a deionizer 44, and the deion channel formed by the deionizer 44 is always in a conductive state.

[0157] In some embodiments, the number of deionizers 44 in the charging pile 40 can be one, and the deion channel M1 formed by this one deionizer 44 is in a conductive state. That is, the one deionizer 44 can be one deionizer 44 in the charging pile 40 shown in FIG8.

[0158] The charging pile 40 is used to increase the coolant flow rate of the deion channel M1 formed by the deionizer 44 when the heat exchanger 43 is operating and the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 meets preset conditions. The preset conditions include at least one of the following: the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset conductivity; and the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset leakage current.

[0159] Specifically, in one example, referring to Figure 9, which is a flowchart illustrating how the charging pile 40 adjusts the coolant flow rate in the deionization channel M1 formed by a deionizer 44 based on the conductivity of the coolant. With the heat exchanger 43 operating, the coolant circulates between the first heat exchange channel 431, the liquid cooling channel 412, and the deionization channel M1 formed by the deionizer 44, and the charging pile 40 can perform the following steps.

[0160] In step S61, the charging pile 40 controls the coolant flow rate of the deion channel M1 formed by the deionizer 44 to be less than or equal to the preset coolant flow rate.

[0161] Specifically, referring to Figures 8 and 9, when the heat exchanger 43 starts operating, the charging pile 40 can first adjust the coolant flow rate of the deion channel M1 formed by the deionizer 44 to be less than or equal to the preset coolant flow rate via the flow regulating valve 430. In this way, the coolant can flow through the deionizer 44 at a smaller flow rate, thereby reducing the ion concentration of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412, while also reducing the physical impact of the coolant on the deionizer 44.

[0162] In step S62, the charging pile 40 is used to determine whether the conductivity of the detected coolant is greater than the first preset conductivity.

[0163] Furthermore, if the conductivity of the coolant detected by the charging pile 40 is not greater than the first preset conductivity, the charging pile 40 confirms that the ion concentration of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is low. Thus, the flow rate of the coolant flowing through the deionizer 44 can continue to be less than or equal to the preset coolant flow rate. Alternatively, if the conductivity of the coolant detected by the charging pile 40 is greater than the first preset conductivity, the charging pile 40 executes step S63.

[0164] In step S63, the charging pile 40 is used to increase the coolant flow rate of the deion channel M1 formed by the deionizer 44, so that the coolant flow rate is greater than the preset coolant flow rate.

[0165] Specifically, referring to Figures 8 and 9, when the conductivity of the coolant detected by the conductivity sensor 48 is greater than the first preset conductivity, the charging pile 40 confirms that the ion concentration of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is high. At this time, the charging pile 40 can increase the coolant flow rate of the deion channel M1 formed by the deionizer 44 to be greater than the preset coolant flow rate through the flow regulating valve 430, so as to reduce the ion concentration of the coolant more quickly.

[0166] It should be understood that the process by which the charging pile 40 adjusts the coolant flow rate of the deion channel M1 formed by the deionizer 44 according to the leakage current of the coolant is similar to the process by which the charging pile 40 adjusts the coolant flow rate according to the conductivity of the coolant, and will not be described again here.

[0167] In the above technical solution, when the heat exchanger 43 is operating, the coolant circulates between the first heat exchange channel 431, the liquid cooling channel 412, and the deionization channel M1 formed by the deionizer 44. In practical applications, when the ion concentration of the coolant is low, the charging pile 40 can initially control the coolant to flow through the deionizer 44 at a lower flow rate, thereby reducing the ion concentration of the coolant and minimizing the physical impact of the coolant on the deionizer 44. Conversely, when the conductivity or leakage current of the coolant is high, i.e., when the ion concentration of the coolant is high, the charging pile 40 can increase the flow rate of the coolant through the deionizer 44 to reduce the ion concentration of the coolant more quickly. This not only maintains the ion concentration of the coolant at a relatively low level but also reduces the aging rate of the deionizer 44, thus extending its service life.

[0168] Furthermore, in some embodiments, the charging pile 40 is also used to reduce the coolant flow rate of the deion channel M1 formed by the deionizer 44 when the coolant conductivity flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to a second preset conductivity; or, when the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to a second preset leakage current, the coolant flow rate of the deion channel M1 formed by the deionizer 44 is reduced. Wherein, the second preset conductivity is less than or equal to the first preset conductivity, and the second preset leakage current is less than or equal to the first preset leakage current.

[0169] Specifically, referring to Figure 9, after the charging pile 40 executes step S63, the coolant can flow through the deionization channel M1 at a larger flow rate, thereby increasing the rate at which the deionizer 44 reduces the ion concentration of the coolant. In this case, the charging pile 40 can continue to execute step S64.

[0170] In step S64, the charging pile 40 is used to determine whether the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to the second preset conductivity.

[0171] Specifically, referring to Figures 8 and 9, during the ion adsorption process of a deionizer 44 in the charging pile 40, the charging pile 40 can detect the conductivity of the coolant in real time through a conductivity sensor 48. If the detected conductivity of the coolant is greater than a second preset conductivity, the charging pile 40 confirms that the ion concentration of the coolant is high. At this time, the coolant continues to flow through the deionizer 44 at a larger flow rate. Furthermore, if the conductivity of the coolant does not decrease to less than or equal to the second preset conductivity within a preset time, or if the conductivity of the coolant continues to rise, the charging pile 40 can confirm that the service life of the deionizer 44 has been exhausted. At this time, the charging pile 40 confirms that the deionizer 44 in the charging pile 40 needs to be replaced.

[0172] If the conductivity of the detected coolant is less than or equal to the second preset conductivity, the charging pile 40 executes step S65.

[0173] In step S65, if the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is less than or equal to the second preset conductivity, the charging pile 40 is used to reduce the coolant flow rate of the deion channel M1 formed by the deionizer 44 so that the coolant flow rate is less than or equal to the preset coolant flow rate.

[0174] Specifically, referring to Figures 8 and 9, when the conductivity of the coolant decreases from greater than a first preset conductivity to less than or equal to a second preset conductivity, the charging pile 40 confirms that the ion concentration of the coolant is low. In this case, the charging pile 40 can further reduce the coolant flow rate of the deion channel M1 formed by the deionizer 44 to less than or equal to the preset coolant flow rate through the flow regulating valve 430, in order to reduce the physical impact of the coolant on the deionizer 44.

[0175] It should be understood that the process by which the charging pile 40 readjusts the coolant flow rate of the deion channel M1 formed by the deionizer 44 to less than or equal to the preset coolant flow rate based on the leakage current of the coolant is similar to the process by which the charging pile 40 adjusts the coolant flow rate based on the conductivity of the coolant, and will not be described again here.

[0176] In the above technical solution, when the conductivity or leakage current of the coolant flowing between the first heat exchange channel 431, the deionizer 44, and the liquid cooling channel 412 decreases from a large value to a small value, that is, when the ion concentration of the coolant decreases from a large value to a small value, the charging pile 40 can again control the coolant to flow through the deionizer 44 at a small flow rate. In this way, not only can the ion concentration of the coolant be maintained at a relatively low level, but the aging rate of the deionizer 44 can also be reduced, thereby helping to extend the service life of the deionizer 44.

[0177] Figures 10 and 11 are schematic diagrams of another charging pile 40 provided in the embodiments of this application.

[0178] Unlike the charging pile 40 shown in Figures 2 to 8, which includes an outlet channel M2 and an inlet channel M3, and the outlet channel M2 or the inlet channel M3 is connected in parallel with the deion channel M1 formed by each deionizer 44 in the charging pile 40, the charging pile 40 shown in Figures 10 and 11 only includes one of the outlet channel M2 and the inlet channel M3, and the included outlet channel M2 or the inlet channel M3 is not connected in parallel with the deion channel M1 formed by each deionizer 44 in the charging pile 40.

[0179] Specifically, referring to Figures 10 and 11, the charging pile 40 includes multiple deionizers 44. These multiple deionizers 44 are connected in parallel, either between the liquid outlet 4121 of the liquid cooling channel 412 and the liquid inlet 4311 of the first heat exchange channel 431, or between the liquid outlet 4312 of the first heat exchange channel 431 and the liquid inlet 4122 of the liquid cooling channel 412.

[0180] Furthermore, when multiple deionizers 44 are connected in parallel between the outlet 4121 of the liquid cooling channel 412 and the inlet 4311 of the first heat exchange channel 431, the charging pile 40 includes an inlet channel M3, and the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 through the inlet channel M3. Alternatively, when multiple deionizers 44 are connected in parallel between the outlet 4312 of the first heat exchange channel 431 and the inlet 4122 of the liquid cooling channel 412, the charging pile 40 includes an outlet channel M2, and the outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 through the outlet channel M2.

[0181] For example, as shown in Figure 10, the charging pile 40 includes a liquid inlet channel M3, a deionizer 44a, and a deionizer 44b. The outlet 4121 of the liquid cooling channel 412 is connected to the inlet 4311 of the first heat exchange channel 431 via the deionizer 44a to form a deionizer channel M1a. The outlet 4121 of the liquid cooling channel 412 is also connected to the inlet 4311 of the first heat exchange channel 431 via the deionizer 44b to form a deionizer channel M1b. That is, deionizer channels M1a and M1b are connected in parallel and then in series between the outlet 4121 of the liquid cooling channel 412 and the inlet 4311 of the first heat exchange channel 431. The liquid inlet channel M3 is connected between the outlet 4312 of the first heat exchange channel 431 and the inlet 4122 of the liquid cooling channel 412.

[0182] For example, as shown in Figure 11, the charging pile 40 includes a liquid outlet channel M2, a deionizer 44a, and a deionizer 44b. The liquid outlet 4121 of the liquid cooling channel 412 is connected to the liquid inlet 4311 of the first heat exchange channel 431 via the liquid outlet channel M2. The liquid outlet 4312 of the first heat exchange channel 431 is connected to the liquid inlet 4122 of the liquid cooling channel 412 via the deionizer 44a to form a deionizer channel M1a. The liquid outlet 4312 of the first heat exchange channel 431 is also connected to the liquid inlet 4122 of the liquid cooling channel 412 via the deionizer 44b to form a deionizer channel M1b. That is, the deionizer channels M1a and M1b are connected in parallel and then in series between the liquid outlet 4312 of the first heat exchange channel 431 and the liquid inlet 4122 of the liquid cooling channel 412. The liquid outlet channel M2 is connected between the liquid outlet 4121 of the liquid cooling channel 412 and the liquid inlet 4311 of the first heat exchange channel 431.

[0183] In the above technical solution, the liquid cooling channel 412 is connected in series with the first heat exchange channel 431 through multiple parallel deionization channels M1. Thus, when the heat exchanger 43 is operating, the charging pile 40 can only activate a portion of the deionization channels M1 formed by the deionizers 44. That is, only a portion of the multiple deionizers 44 are operational. On the one hand, this not only achieves liquid cooling of the wire 411 but also reduces the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431. On the other hand, this reduces the aging rate of the non-operating deionizers 44, thereby extending the overall service life of the multiple deionizers 44.

[0184] The following section uses the charging pile 40 shown in Figures 10 and 11, which includes deionizers 44a and 44b, as an example to further describe the other structures in the charging pile 40.

[0185] Figure 12 is a schematic diagram of the specific structure of the charging pile 40 shown in Figure 10 provided in an embodiment of this application. Figure 13 is a schematic diagram of the specific structure of the charging pile 40 shown in Figure 11 provided in an embodiment of this application.

[0186] In some embodiments, referring to Figures 12 and 13, the charging pile 40 further includes a multi-way valve 45 and a multi-way valve 46. Specifically, when multiple deionizers 44 connected in parallel are connected between the outlet 4121 of the liquid cooling channel 412 and the inlet 4311 of the first heat exchange channel 431, the coolant flowing from the outlet 4121 of the liquid cooling channel 412 flows into the multiple deionizers 44 connected in parallel through the multi-way valve 45, and the coolant flowing from the multiple deionizers 44 flows into the inlet 4311 of the first heat exchange channel 431 through the multi-way valve 46. Alternatively, when multiple deionizers 44 are connected in parallel between the outlet 4312 of the first heat exchange channel 431 and the inlet 4122 of the liquid cooling channel 412, the coolant flowing out of the outlet 4312 of the first heat exchange channel 431 flows into the multiple deionizers 44 in parallel through the multi-way valve 45, and the coolant flowing out of the multiple deionizers 44 in parallel flows into the inlet 4122 of the liquid cooling channel 412 through the multi-way valve 46.

[0187] For example, as shown in Figure 12, when deionizers 44a and 44b are connected to the inlet 4311 of the first heat exchange channel 431, the coolant flowing out of the outlet 4121 of the liquid cooling channel 412 flows into deionizers 44a and 44b respectively through the multi-way valve 45, and the coolant flowing out of deionizers 44a and 44b flows into the inlet 4311 of the first heat exchange channel 431 respectively through the multi-way valve 46.

[0188] For example, as shown in Figure 13, when the outlet 4312 of the first heat exchange channel 431 is connected to the inlet 4122 of the liquid cooling channel 412 through deionizers 44a and 44b, the coolant flowing out of the outlet 4312 of the first heat exchange channel 431 flows into deionizers 44a and 44b respectively through multi-way valves 45, and the coolant flowing out of deionizers 44a and 44b flows into the inlet 4122 of the liquid cooling channel 412 respectively through multi-way valves 46.

[0189] It should be understood that, in practical implementation, both multi-port valves 45 and 46 are three-way valves. For example, taking the liquid outlet 4312 of the first heat exchange channel 431 shown in Figure 13 as an example, which is connected to the liquid inlet 4122 of the liquid cooling channel 412 via deionizers 44a and 44b, the first valve port 451 of multi-port valve 45 is connected to the liquid outlet 4312 of the first heat exchange channel 431, the second valve port 452 of multi-port valve 45 is connected to the inlet of deionizer 44b, and the third valve port 453 of multi-port valve 45 is connected to the inlet of deionizer 44a. Similarly, the first valve port 461 of multi-port valve 46 is connected to the outlet of deionizer 44a, the second valve port 462 of multi-port valve 46 is connected to the outlet of deionizer 44b, and the third valve port 463 of multi-port valve 46 is connected to the liquid inlet 4122 of the liquid cooling channel 412.

[0190] Based on the above design, the multi-way valves 45 and 46 can be used to split and collect the coolant between the liquid cooling channel 412 and the first heat exchange channel 431, thereby enabling the outlet 4312 of the first heat exchange channel 431 to be connected to the inlet 4122 of the liquid cooling channel 412 through multiple parallel deionization channels M1, or enabling the outlet 4121 of the liquid cooling channel 412 to be connected to the inlet 4311 of the first heat exchange channel 431 through multiple parallel deionization channels M1.

[0191] It should be understood that, in specific implementation, the charging pile 40 can also adjust the on / off state of multiple deionization channels M1 in the charging pile 40 by adjusting the on / off state of the channels between different valve ports of each multi-port valve in the multi-port valve 45 and multi-port valve 46. Alternatively, the charging pile 40 can also adjust the on / off state of the deionization channel M1 formed by each deionizer 44 through the two-port valve 47 corresponding to each deionizer 44.

[0192] For example, as shown in Figures 12 and 13, the charging pile 40 also includes two-way valves 47a and 47b. The charging pile 40 can adjust the on / off state of the deionization channel M1a formed by the deionizer 44a corresponding to the two-way valve 47a by adjusting the on / off state of the channel between the two valve ports of the two-way valve 47a. Furthermore, the charging pile 40 can adjust the on / off state of the deionization channel M1b formed by the deionizer 44b corresponding to the two-way valve 47b by adjusting the on / off state of the channel between the two valve ports of the two-way valve 47b. For a detailed description, please refer to the relevant descriptions of the embodiments shown in Figures 5 and 6, which will not be repeated here.

[0193] It should be understood that any details regarding the charging pile 40 not described above can be found in the relevant descriptions of the embodiments shown in Figures 5 and 6, and will not be repeated here.

[0194] The following describes the specific process by which the charging pile 40 mentioned above can, while the heat exchanger 43 is working, only conduct the deion channels M1 formed by a portion of the deionizers 44 in the multiple deion channels M1.

[0195] In some embodiments, the charging pile 40 is used to open the deion channel formed by at least one of the plurality of deionizers 44 when the heat exchanger 43 is working, and to disconnect the deion channel M1 formed by the other deionizers 44 besides the at least one deionizer 44.

[0196] Specifically, taking the charging pile 40 shown in Figures 12 and 13, which includes deionizers 44a and 44b, as an example, when the heat exchanger 43 is working, the charging pile 40 can open the deion channel M1a formed by the deionizer 44a through the two-way valve 47a, and close the deion channel M1b formed by the deionizer 44b through the two-way valve 47b. At this time, the coolant can circulate between the liquid cooling channel 412, the first heat exchange channel 431, and the deion channel M1a.

[0197] This not only achieves liquid cooling of the wire 411, but also reduces the ion concentration of the coolant through the deionizer 44a in the deionization channel M1a, thereby maintaining the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431 at a relatively low level. Furthermore, since the deionization channel M1b is disconnected, the deionizer 44b is not in operation during the time that the deionizer 44a is working. This reduces the aging rate of the deionizer 44b, thereby extending the overall service life of both the deionizer 44a and the deionizer 44b.

[0198] Furthermore, in some embodiments, the charging pile 40 is also used to: when at least one deionizer 44 among the plurality of deionizers 44 of the charging pile 40 is turned on and the deionizer channels M1 formed by the other deionizers 44 besides the at least one deionizer 44 are turned off: when the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 meets a preset condition, disconnect the deionizer channel M1 formed by the at least one deionizer 44 and turn on the deionizer channels M1 formed by the at least one deionizer 44 among the other deionizers 44. The preset condition includes at least one of the following conditions: the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset conductivity; and the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset leakage current.

[0199] Specifically, taking the charging pile 40 shown in Figures 12 and 13, which includes deionizers 44a and 44b, as an example, when the heat exchanger 43 is working, the charging pile 40 can first open the deion channel M1a and then close the deion channel M1b, so that the coolant circulates between the liquid cooling channel 412, the first heat exchange channel 431, and the deion channel M1a. During the above-mentioned coolant circulation process, the deionizer 44a in the deion channel M1a absorbs ions in the coolant, which can keep the ion concentration of the coolant relatively low.

[0200] However, as the ion absorption process continues, the deionizer 44a will age continuously, and its service life will be shortened. When the service life of the deionizer 44a is exhausted, it will no longer be able to absorb ions from the coolant. This leads to an increase in the ion concentration of the coolant. Correspondingly, the conductivity of the coolant increases, or the leakage current of the coolant increases when the wire 411 is energized. Therefore, when the heat exchanger 43 is working, the charging pile 40 can monitor the conductivity of the coolant in real time through the conductivity sensor 48, or monitor the leakage current of the coolant in real time through the leakage current detection device 49 when the wire 411 is energized, thereby determining whether the service life of the currently operating deionizer 44a has been exhausted.

[0201] For example, if the detected conductivity of the coolant is greater than a first preset conductivity, the charging pile 40 can confirm that the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is high, meaning the ion concentration of the coolant is high, thus confirming that the service life of the deionizer 44a has been exhausted. Alternatively, if the detected leakage current of the coolant is greater than a third preset leakage current, the charging pile 40 can confirm that the leakage current of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is high, meaning the ion concentration of the coolant is high, thus confirming that the service life of the deionizer 44a has been exhausted.

[0202] Furthermore, the charging pile 40 can disconnect the deionization channel M1a formed by the deionizer 44a and open the deionization channel M1b formed by the deionizer 44b when it is confirmed that the deionizer 44a has exhausted its service life. In this way, the coolant can circulate among the liquid cooling channel 412, the first heat exchange channel 431 and the deionization channel M1b. During the above-mentioned coolant circulation process, the deionizer 44b in the deionization channel M1b absorbs ions in the coolant, so that the ion concentration of the coolant can be reduced to a relatively low state again.

[0203] In the above technical solution, when the conductivity or leakage current of the coolant exceeds a preset value, the charging pile 40 confirms that the service life of the currently operating deionizer 44 has been exhausted. In this case, the charging pile 40 can activate the deionization channel M1 formed by the currently non-operating deionizer 44, so that the currently non-operating deionizer 44 can start working, thereby reducing the ion concentration of the coolant flowing between the liquid cooling channel 412 and the first heat exchange channel 431, so that the ion concentration of the coolant is relatively low. In addition, some of the multiple deionizers 44 in the charging pile 40 start working first, and when the service life of these partial deionizers 44 is exhausted, the other deionizers 44 start working, which helps to extend the service life of the multiple deionizers 44.

[0204] It should be understood that, in practice, the number of deion channels M1 activated by the charging pile 40 each time may not be equal. Alternatively, the charging pile 40 may activate an equal number of deion channels M1 formed by the deionizers 44 each time.

[0205] For example, referring to Figure 14, Figure 14 is a schematic diagram of the process of connecting the deionization channel M1 in the charging pile 40 using the conductivity of the coolant as a criterion. The charging pile 40 includes multiple deionizers 44, which can be numbered in the order of 1, 2, 3… When the heat exchanger 43 is operating, the coolant circulates between the first heat exchange channel 431 and the liquid cooling channel 412, and the charging pile 40 can perform the following steps.

[0206] In step S71, when the heat exchanger 43 is operating, the charging pile 40 is used to connect the deionization channel M1 formed by the i-th deionizer 44 and disconnect the deionization channels M1 formed by the other deionizers 44 besides the i-th deionizer 44. Here, i is a positive integer greater than or equal to 1.

[0207] Specifically, taking the charging pile 40, which includes three deionizers 44, as an example, the three deionizers 44 can be numbered in the order of 1, 2, and 3. Referring to Figures 10 to 13, when the heat exchanger 43 is working, the charging pile 40 can open the deion channel M1 formed by the first deionizer 44 and close the deion channel M1 formed by the second and third deionizers 44.

[0208] In this way, the coolant can circulate between the liquid cooling channel 412, the first heat exchange channel 431, and the deionization channel M1 formed by the first deionizer 44. During the above process, the first deionizer 44 is used to adsorb ions in the coolant to maintain a reduced ion concentration in the circulating coolant.

[0209] In step S72, the charging pile 40 is used to detect whether the conductivity of the coolant flowing between the first heat exchange channel 431 and the liquid cooling channel 412 is greater than a first preset conductivity when the deion channel M1 formed by the first deionizer 44 is turned on and the deion channel M1 formed by the second deionizer 44 and the third deionizer 44 is turned off.

[0210] Furthermore, when the conductivity of the coolant detected by the charging pile 40 is less than or equal to the first preset conductivity, the charging pile 40 confirms that the ion concentration of the coolant is low, thereby confirming that the service life of the first deionizer 44 has not been exhausted and the first deionizer can still be used to absorb ions in the coolant.

[0211] When the conductivity of the coolant detected by the charging pile 40 is greater than the first preset conductivity, the charging pile 40 confirms that the ion concentration of the coolant is high. At this time, the charging pile 40 executes step S73.

[0212] In step S73, if the conductivity of the detected coolant is greater than the first preset conductivity, the charging pile 40 is used to disconnect the deion channel M1 formed by the i-th deionizer 44 and connect the deion channel M1 formed by the (i+1)-th deionizer 44.

[0213] Specifically, taking the charging pile 40, which includes three deionizers 44, as an example, and referring to Figures 10 to 13, when the heat exchanger 43 is working, and the charging pile 40 confirms that the service life of the first deionizer 44 has been exhausted, the charging pile 40 can disconnect the deion channel M1 formed by the first deionizer 44 and open the deion channel M1 formed by the second deionizer 44.

[0214] In this way, the coolant can circulate between the liquid cooling channel 412, the first heat exchange channel 431, and the deionization channel M1 formed by the second deionizer 44. During the above process, the second deionizer 44 is used to adsorb ions in the coolant so that the ion concentration of the circulating coolant is maintained at a reduced concentration again.

[0215] Similarly, when the service life of the second deionizer 44 is exhausted, the charging pile 40 can be used to disconnect the deion channel M1 formed by the second deionizer 44 and connect the deion channel M1 formed by the third deionizer 44.

[0216] In the above technical solution, when the heat exchanger 43 is operating, the charging pile 40 can first activate one of the multiple deionizers 44, while deactivating the remaining deionizers 44, thereby reducing the aging rate of the remaining deionizers 44. Furthermore, when the service life of the first deionizer 44 is exhausted, then the remaining deionizer 44 is activated. This extends the overall service life of the multiple deionizers 44.

[0217] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging pile, characterized in that, The charging pile includes a charging gun, a heat exchanger, and a deionizer. The charging gun includes a wire and a liquid cooling channel. The wire is immersed in the coolant in the liquid cooling channel. The wire is used to output electrical energy to the electric vehicle. The coolant in the liquid cooling channel is used to exchange heat with the wire. The heat exchanger's heat exchange channel is used to cool the coolant output from the liquid cooling channel and to transport the cooled coolant back to the liquid cooling channel. The outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel through the deionizer to form a deionization channel, or the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel through the deionizer to form a deionization channel.

2. The charging pile according to claim 1, characterized in that, The charging pile further includes a liquid outlet channel and a liquid inlet channel. The liquid outlet channel is connected between the liquid outlet of the liquid cooling channel and the liquid inlet of the heat exchange channel, and the liquid inlet channel is connected between the liquid outlet of the heat exchange channel and the liquid inlet of the liquid cooling channel. The number of deionizers is one or more, wherein... The liquid outlet of the liquid cooling channel is connected to the liquid inlet of the heat exchange channel through one or more of the deionizers, and the deion channel formed by each deionizer is connected in parallel with the liquid outlet channel; or, The outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel through each deionizer, and the deion channel formed by each deionizer is connected in parallel with the inlet channel.

3. The charging pile according to claim 2, characterized in that, The charging pile is used for: When the heat exchanger is operating and the coolant flowing between the heat exchange channel and the liquid cooling channel meets preset conditions, at least one deionization channel formed by the deionizer is opened, wherein the preset conditions include at least one of the following conditions: The conductivity of the circulating coolant is greater than a first preset conductivity, and the leakage current of the circulating coolant is greater than a first preset leakage current.

4. The charging pile according to claim 3, characterized in that, The charging pile is also used when the deion channel formed by the at least one deionizer is open: When the conductivity of the circulating coolant is less than or equal to a second preset conductivity, the deion channel formed by the at least one deionizer is disconnected, where the second preset conductivity is less than the first preset conductivity. or, When the leakage current of the circulating coolant is less than or equal to a second preset leakage current, the deionization channel formed by the at least one deionizer is disconnected, and the second preset leakage current is less than the first preset leakage current.

5. The charging pile according to claim 3 or 4, characterized in that, The one or more deionizers include a plurality of deionizers; The charging pile is used when the heat exchanger is operating and the conductivity of the flowing coolant is greater than the first preset conductivity: When the difference between the conductivity of the circulating coolant and the first preset conductivity is less than the preset conductivity difference, the deion channel formed by one of the plurality of deionizers is opened. or, When the difference between the conductivity of the circulating coolant and the first preset conductivity is greater than or equal to the preset conductivity difference, the deionization channel formed by at least two of the plurality of deionizers is opened.

6. The charging pile according to claim 3 or 4, characterized in that, The one or more deionizers include a plurality of deionizers; The charging pile is used when the heat exchanger is working, the wires output electrical energy to the electric vehicle, and the leakage current of the flowing coolant is greater than the first preset leakage current: When the difference between the leakage current of the circulating coolant and the first preset leakage current is less than the preset leakage current difference, the deion channel formed by one of the plurality of deionizers is turned on. or, When the difference between the leakage current of the circulating coolant and the first preset leakage current is greater than or equal to the preset leakage current difference, the deion channel formed by at least two of the plurality of deionizers is activated.

7. The charging pile according to claim 2, characterized in that, The one or more deionizers include a deionizer, and the deion channel formed by the one deionizer is in a conductive state. The charging pile is used for: When the heat exchanger is operating and the coolant flowing between the heat exchange channel and the liquid cooling channel meets preset conditions, the coolant flow rate of the deionization channel formed by the deionizer is increased, wherein the preset conditions include at least one of the following conditions: The conductivity of the circulating coolant is greater than a first preset conductivity, and the leakage current of the circulating coolant is greater than a first preset leakage current.

8. The charging pile according to claim 7, characterized in that, The charging pile is also used when the coolant flow rate of the deionization channel formed by the deionizer has been increased: When the conductivity of the circulating coolant is less than or equal to a second preset conductivity, the coolant flow rate of the deion channel formed by the deionizer is reduced, and the second preset conductivity is less than or equal to the first preset conductivity. or, When the leakage current of the circulating coolant is less than or equal to a second preset leakage current, the coolant flow rate of the deion channel formed by the deionizer is reduced, and the second preset leakage current is less than or equal to the first preset leakage current.

9. The charging pile according to any one of claims 2 to 8, characterized in that, The charging pile also includes a multi-way valve and a conductivity sensor; wherein... When the outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel through each deionizer, the coolant flowing out of the outlet of the liquid cooling channel flows into the outlet channel and each deionizer through the multi-way valve; or, When the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel through each deionizer, the coolant flowing out of the outlet of the heat exchange channel flows into the inlet channel and each deionizer through the multi-way valve. The conductivity sensor is used to detect the conductivity of the coolant flowing out of the outlet of the liquid cooling channel and not flowing into the multi-way valve.

10. The charging pile according to claim 1, characterized in that, The number of deionizers is multiple, and the multiple deionizers are connected in parallel. The multiple deionizers connected in parallel are connected between the liquid outlet of the liquid cooling channel and the liquid inlet of the heat exchange channel, or the multiple deionizers connected in parallel are connected between the liquid outlet of the heat exchange channel and the liquid inlet of the liquid cooling channel. The charging pile is used for: When the heat exchanger is in operation, the deion channel formed by at least one of the plurality of deionizers is opened, and the deion channels formed by the other deionizers besides the at least one deionizer are closed.

11. The charging pile according to claim 10, characterized in that, The charging pile is also used when the deionization channel formed by at least one of the plurality of deionizers is turned on and the deionization channels formed by the other deionizers are turned off: When the coolant flowing between the heat exchange channel and the liquid cooling channel meets a preset condition, the deionization channel formed by at least one of the plurality of deionizers is disconnected, and the deionization channel formed by at least one of the other deionizers is opened, wherein the preset condition includes at least one of the following conditions: The conductivity of the circulating coolant is greater than a first preset conductivity, and the leakage current of the circulating coolant is greater than a first preset leakage current.

12. The charging pile according to claim 10 or 11, characterized in that, The charging pile also includes a multi-way valve and a conductivity sensor; wherein... When the plurality of deionizers connected in parallel are positioned between the outlet of the liquid cooling channel and the inlet of the heat exchange channel, the coolant flowing out of the outlet of the liquid cooling channel flows into the plurality of deionizers connected in parallel through the multi-way valve; or, When the plurality of deionizers connected in parallel are connected between the outlet of the heat exchange channel and the inlet of the liquid cooling channel, the coolant flowing out of the outlet of the heat exchange channel flows into the plurality of deionizers connected in parallel through the multi-way valve. The conductivity sensor is used to detect the conductivity of the coolant flowing out of the outlet of the liquid cooling channel and not flowing into the multi-way valve.

13. The charging pile according to any one of claims 1 to 6, 10 to 12, characterized in that, The charging pile also includes a two-way valve; wherein... When the outlet of the liquid cooling channel is connected to the inlet of the heat exchange channel via the deionizer, the two-way valve is used to open the channel between the outlet of the liquid cooling channel and the deionizer, or the two-way valve is used to open the channel between the deionizer and the inlet of the heat exchange channel; or, When the outlet of the heat exchange channel is connected to the inlet of the liquid cooling channel through the deionizer, the two-way valve is used to open the channel between the outlet of the heat exchange channel and the deionizer, or the two-way valve is used to open the channel between the deionizer and the inlet of the liquid cooling channel.

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