WO-2026091615-A1 - CHARGING PILE

WO2026091615A1WO 2026091615 A1WO2026091615 A1WO 2026091615A1WO-2026091615-A1

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.

Inventors

FAN, JING
FAN, Simiao
WANG, DONGYU
HONG, FANGJUN
WANG, JIANGANG

Assignees

华为数字能源技术有限公司

Dates

Publication Date: 20260507
Application Date: 20250628
Priority Date: 20241031

Claims (13)

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 of the liquid cooling channel; the wire is used to output electrical energy to an electric vehicle; the coolant of the liquid cooling channel is used to exchange heat with the wire; the heat exchange channel of the heat exchanger 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.
According to claim 1, the charging pile is characterized in that it further includes an outlet channel and an inlet channel, the outlet channel being connected between the outlet of the liquid cooling channel and the inlet of the heat exchange channel, and the inlet channel being connected between the outlet of the heat exchange channel and the 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.
According to claim 2, the charging pile is characterized in that it 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.
According to claim 3, the charging pile is further configured to, when the deionization channel formed by the at least one deionizer is already open: When the conductivity of the circulating coolant is less than or equal to a second preset conductivity, the deionization 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.
According to claim 3 or 4, the charging pile is 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 deionization channel formed by one of the plurality of deionizers is activated; 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.
According to claim 3 or 4, the charging pile is 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 deionization channel formed by one of the plurality of deionizers is activated; 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.
According to claim 2, the charging pile is 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.
According to claim 7, the charging pile is further characterized in that, 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 in the deionization channel formed by the deionizer is reduced, where 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.
The charging pile according to any one of claims 2 to 8, characterized in that the charging pile further 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.
According to claim 1, the charging pile is characterized in that the number of deionizers is multiple, 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.
According to claim 10, the charging pile is further configured to operate when the deionization channel formed by at least one of the plurality of deionizers is open and the deionization channels formed by the other deionizers are closed: 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.
According to claim 10 or 11, the charging pile is characterized in that it further 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.
The charging pile according to any one of claims 1 to 6, 10 to 12, is characterized in that the charging pile further 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.

Description

charging pile 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 This application relates to the field of charging, and more specifically, to a charging pile. Background Technology 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". 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 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. 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. 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. 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. 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 forme