Charging pile

Abstract

The invention provides a charging pile which comprises liquid cooling equipment and charging equipment, the liquid cooling equipment comprises a heat exchanger, a liquid inlet and a liquid outlet of the heat exchanger are connected with a liquid cooling channel of a to-be-cooled component in the charging equipment to form a liquid supply loop, the liquid cooling equipment further comprises a liquid cooling connector, and the liquid cooling connector is used for being connected with a liquid cooling interface of an electric vehicle. The liquid cooling equipment is used for outputting cooling liquid to the electric vehicle through the liquid cooling connector. And the charging equipment is used for transmitting electric energy to the electric vehicle under the condition of receiving a message for indicating that the liquid cooling equipment has transmitted the cooling liquid to the electric vehicle. The charging efficiency and safety of the electric vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the field of charging, and in particular to a charging pile. Background Art

[0002] As charging equipment continues to evolve towards supercharging type charging equipment, the charging power output from multiple charging modules in the charging host to electric vehicles through charging guns continues to increase, so as to be able to supercharge the power battery of the electric vehicle. However, as the charging power continues to increase, the heat generated by the electric vehicle increases accordingly. If this heat cannot be discharged in time, it will cause the temperature of the electric vehicle to rise. Excessive temperature can easily affect the normal high-power charging of electric vehicles, resulting in a decrease in the efficiency and safety of electric vehicle charging. Summary of the invention

[0003] The present application provides a charging pile that can improve the efficiency and safety of charging electric vehicles.

[0004] In a first aspect, a charging pile is provided, the charging pile includes a liquid cooling device and a charging device, the liquid cooling device includes a heat exchanger, the liquid inlet and the liquid outlet of the heat exchanger are connected to the liquid cooling channel of the component to be cooled in the charging device to form a liquid supply circuit, the liquid cooling device also includes a liquid cooling connector, the liquid cooling connector is used to connect to the liquid cooling interface of the electric vehicle, and the liquid cooling device is used to output the coolant to the electric vehicle through the liquid cooling connector. The charging device is used to: when receiving a message indicating that the liquid cooling device has delivered the coolant to the electric vehicle, deliver electric energy to the electric vehicle.

[0005] In an embodiment of the present application, during the process of the charging device charging the electric vehicle, the liquid cooling device can deliver coolant to the electric vehicle through the liquid cooling joint. The coolant can absorb the heat generated during the charging process of the electric vehicle, thereby realizing liquid cooling of the electric vehicle, thereby meeting the heat dissipation requirements of high-power charging of the electric vehicle, which is beneficial to the normal high-power charging of the electric vehicle, thereby improving the efficiency and safety of charging of the electric vehicle.

[0006] Moreover, when the charging device receives a message indicating that the liquid cooling device has delivered coolant to the electric vehicle, it then delivers electric energy to the electric vehicle, which can ensure that the electric vehicle is charged under the condition that it has the ability to dissipate heat, thereby preventing charging anomalies that may occur when the electric vehicle is already in a charging state but the liquid cooling device is unable to deliver coolant to the electric vehicle in time, thereby further improving the efficiency and safety of electric vehicle charging.

[0007] In combination with the first aspect, in a possible design, the charging device is used to: when the liquid cooling device delivers coolant to the charging device, when the pressure of the liquid cooling channel is less than the first preset required pressure, or the flow rate of the liquid cooling channel is less than the first preset required flow rate, reduce the power delivered to the electric vehicle and send a message to the liquid cooling device to instruct to stop delivering coolant. The first preset required pressure is the pressure of the liquid cooling channel when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the charging device at the flow rate of the coolant required by the charging device; the first preset required flow rate is the flow rate of the liquid cooling channel when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the charging device at the flow rate of the coolant required by the charging device.

[0008] In an embodiment of the present application, when the pressure of the liquid cooling channel is less than the first preset required pressure of the liquid cooling channel, or the flow rate of the liquid cooling channel is less than the first preset required flow rate of the liquid cooling device, it indicates that there is a coolant leak in the process of the liquid cooling device delivering coolant to the charging device. In this case, the charging device can reduce the power delivered to the electric vehicle and send a message to the liquid cooling device to instruct to stop delivering coolant. As the power decreases, the heat dissipation demand of the charging device decreases. The charging device can send a message to the liquid cooling device to instruct to stop delivering coolant. As a result, the liquid cooling device stops delivering coolant to the charging device, and the heat of the charging device is naturally discharged to the current environment to achieve heat dissipation of the liquid cooling device. For electric vehicles, since the charging power of the electric vehicle is reduced, the electric vehicle's own thermal management system can be relied on to dissipate heat to meet the heat dissipation needs of the electric vehicle, thereby ensuring the normal charging of the electric vehicle by the charging device as much as possible, improving the reliability of the charging device charging the electric vehicle, and thus improving the user experience.

[0009] Moreover, when there is a coolant leak during the process of the liquid cooling device delivering coolant to the charging device, the specific location of the coolant leak is not determined at this time. There may be a coolant leak in the liquid cooling channel of the liquid cooling device, there may be a coolant leak in the liquid cooling channel of the charging device, or there may be a coolant leak in the liquid cooling channel of both the liquid cooling device and the charging device. The present application designs the liquid cooling device to stop delivering coolant to the charging device, so that the liquid cooling channels of the liquid cooling device and the charging device can be detected to determine the specific location of the coolant leak, and they can be repaired or replaced to ensure that the charging device can subsequently charge the electric vehicle at high power normally, thereby further improving the reliability of the charging device charging the electric vehicle, and thus improving the user experience. In addition, when there is a coolant leak, there may be a coolant leak in the liquid cooling device. At this time, the liquid cooling device can stop delivering coolant to the electric vehicle to prevent further leakage of the coolant in the liquid cooling device.

[0010] In combination with the first aspect, in a possible design, the charging pile is used to: when the liquid cooling device delivers coolant to the electric vehicle, when the pressure of the liquid cooling channel between the liquid cooling device and the electric vehicle is less than the second preset required pressure, or the flow rate of the liquid cooling channel between the liquid cooling device and the electric vehicle is less than the second preset required flow rate, stop delivering electric energy to the electric vehicle. The second preset required pressure is the pressure corresponding to the liquid cooling channel between the liquid cooling device and the electric vehicle when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the electric vehicle at the flow rate of the coolant required by the electric vehicle; the second preset required flow rate is the flow rate corresponding to the liquid cooling channel between the liquid cooling device and the electric vehicle when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the electric vehicle at the flow rate of the coolant required by the electric vehicle.

[0011] In the embodiment of the present application, when the pressure of the liquid cooling channel is less than the second preset required pressure, or the flow rate of the liquid cooling channel is less than the second preset required flow rate, it indicates that there is a coolant leak in the process of the liquid cooling device delivering coolant to the electric vehicle. In this case, the charging device can stop delivering electric energy to the electric vehicle to prevent the coolant from flowing into the power battery and causing damage to the power battery, thereby extending the life of the power battery. In addition, the design of the present application can also prevent the coolant from flowing into other components of the electric vehicle and causing damage to other components, thereby reducing the possibility of damage to the electric vehicle, extending the service life of the electric vehicle, and thus improving the user experience.

[0012] It should be noted that when there is a coolant leak during the process of the liquid cooling device conveying coolant to the electric vehicle, the specific location of the coolant leak is not certain at this time. There may be a coolant leak in the liquid cooling channel of the liquid cooling device, there may be a coolant leak in the liquid cooling channel of the electric vehicle, or there may be a coolant leak in both the liquid cooling device and the liquid cooling channel of the electric vehicle. The present application designs the charging device to stop conveying electric energy to the electric vehicle, so as to facilitate the detection of the liquid cooling device and the liquid cooling channel of the electric vehicle to determine the specific location of the coolant leak, and to repair or replace it, so as to ensure the normal subsequent high-power charging of the electric vehicle by the charging device, thereby further improving the reliability of the charging device charging the electric vehicle, and thus improving the user experience.

[0013] In combination with the first aspect, in one possible design, when the charging device is connected to the electric vehicle, the charging device is also used to: receive a message for requesting the liquid cooling device to output coolant for the electric vehicle; send a message to the liquid cooling device for requesting the liquid cooling device to output coolant for the electric vehicle, and a message for requesting the liquid cooling device to output coolant for the charging device.

[0014] Based on the above scheme, the message for requesting the liquid cooling device to output coolant for the electric vehicle and the message for requesting the liquid cooling device to output coolant for the electric vehicle are both managed by the charging device. In this way, the communication between the liquid cooling device and the electric vehicle can be reduced, thereby simplifying the process design of the liquid cooling device.

[0015] In combination with the first aspect, in a possible design, the liquid cooling device includes M liquid inlets and M liquid outlets, the charging device includes M charging terminals, and the components to be cooled of each charging terminal include N charging guns, where M and N are both integers greater than or greater than 1. The M liquid outlets are connected one-to-one with the liquid injection ports of the M charging terminals, and the M liquid inlets are connected one-to-one with the liquid return ports of the M charging terminals. The liquid injection port of the charging terminal is connected to the liquid inlet of the liquid cooling channel of each of the N charging guns; the liquid return port of the charging terminal is connected to the liquid outlet of the liquid cooling channel of each of the N charging guns.

[0016] Based on the above scheme, since the M liquid outlets are connected one-to-one with the liquid filling ports of the M charging terminals, and the M liquid inlets are connected one-to-one with the liquid return ports of the M charging terminals, when one charging terminal or at least part of the charging guns of multiple charging terminals are connected to the electric vehicle, the liquid cooling device can transport coolant to the corresponding charging terminal through the liquid outlet connected to the liquid filling port of the one or more charging terminals, thereby meeting the heat dissipation requirements of each charging terminal. In this way, the normal charging of the electric vehicle by each charging terminal can be guaranteed as much as possible, the reliability of the charging terminal charging the electric vehicle can be improved, and the user experience can be improved.

[0017] Furthermore, since the liquid cooling device includes M liquid outlets and M liquid inlets, the number of liquid outlets is small, the design is simple, and it is easy to implement.

[0018] In combination with the first aspect, in a possible design, each charging terminal includes N two-way valves, and the N two-way valves are connected to the liquid cooling channels of the N charging guns in a one-to-one correspondence. One valve port of each of the N two-way valves is connected to the liquid inlet of the corresponding liquid cooling channel, and the other valve port of each of the N two-way valves is connected to the liquid injection port of the corresponding charging terminal.

[0019] Based on the above scheme, since each charging terminal includes N two-way valves and the N two-way valves are connected one-to-one with the liquid cooling channels of N charging guns, it is equivalent to that the liquid cooling device and the liquid cooling channel of each charging gun are individually controlled by a two-way valve. When the charging gun of one of the M charging terminals is connected to the electric vehicle, the charging terminal can control the two-way valve connected to the liquid cooling channel of the charging gun to open the liquid cooling channel between the liquid cooling device and the charging gun. The control is simple and easy to implement.

[0020] In addition, the present application designs a two-way valve to connect the liquid injection port of the charging terminal and the liquid inlet of the liquid cooling channel of each charging gun, which can reduce costs. Moreover, compared with using a multi-way valve to connect the liquid injection port of the charging terminal and the liquid inlet of the liquid cooling channel of each charging gun, the solution of the present application can solve the problem of valve loosening or damage caused by repeated switching of different valve ports of the multi-way valve, which can further reduce

[0021] In combination with the first aspect, in a possible design, the liquid cooling device includes M groups of liquid inlets and M groups of liquid outlets, each group of liquid inlets includes N liquid inlets, each group of liquid outlets includes N liquid outlets, the charging device includes M charging terminals, and the components to be cooled of each charging terminal include N charging guns, and M and N are both integers greater than or equal to 1. The M groups of liquid outlets are connected to the M charging terminals in a one-to-one correspondence, the M groups of liquid inlets are connected to the M charging terminals in a one-to-one correspondence, the N liquid outlets of each group of liquid outlets are connected to the N liquid injection ports of a charging terminal in a one-to-one correspondence, and the N liquid inlets of each group of liquid inlets are connected to the N liquid return ports of a charging terminal; the N liquid injection ports are connected to the liquid inlets of the liquid cooling channels of the corresponding N charging guns in a one-to-one correspondence, and the N liquid return ports are connected to the liquid outlets of the liquid cooling channels of the corresponding N charging guns in a one-to-one correspondence.

[0022] Based on the above scheme, since the M groups of liquid outlets are connected one-to-one with the M charging terminals, and the M groups of liquid inlets are connected one-to-one with the M charging terminals, when the charging guns of one charging terminal or multiple charging terminals are connected to the electric vehicle, a group of liquid outlets in the liquid cooling device connected to the one or more charging terminals transport coolant to the corresponding charging terminal, thereby meeting the heat dissipation requirements of each charging terminal. In this way, the normal charging of the electric vehicle by each charging terminal can be guaranteed as much as possible, the reliability of the charging terminal charging the electric vehicle can be improved, and the user experience can be improved.

[0023] In addition, since the M groups of liquid outlets of the liquid cooling device include N liquid outlets, the M groups of liquid inlets include N liquid inlets, and the N liquid outlets of each group of liquid outlets are connected one-to-one with the N liquid filling ports of a charging terminal, and the N liquid inlets of each group of liquid inlets are connected with the N liquid return ports of a charging terminal, in this way, the liquid cooling device transports coolant to the liquid inlets of liquid cooling channels of different liquid cooling guns through different liquid outlets, and the coolant flowing out of the liquid outlet of the liquid cooling channel of each liquid cooling gun flows into the liquid cooling device through different liquid inlets of the liquid cooling device. Even if a liquid port of the liquid cooling device or a liquid port of the charging device leaks, it does not affect the liquid cooling device from transporting coolant to the liquid cooling channels of other charging guns of the charging device through other liquid ports, thereby improving the reliability of the overall heat dissipation of the M charging terminals by the liquid cooling device.

[0024] In combination with the first aspect, in a possible design, a two-way valve is connected to the liquid outlet of the heat exchanger and each liquid outlet of the liquid cooling device.

[0025] In the embodiment of the present application, since the liquid outlet of the heat exchanger of the liquid cooling device is connected to each liquid outlet of the liquid cooling device by a two-way valve, the liquid cooling device can control the liquid cooling device to transport coolant to the corresponding charging device through different liquid outlets of the liquid cooling device by controlling different two-way valves. The control is simple and easy to implement.

[0026] Moreover, the present application designs a two-way valve to connect each liquid outlet of the liquid cooling device and the liquid outlet of the heat exchanger of the liquid cooling device, which can reduce costs. Moreover, compared with using a multi-way valve to connect the liquid outlet of the heat exchanger of the liquid cooling device and each liquid outlet of the liquid cooling device, the solution of the present application can solve the problem of valve loosening or damage caused by repeated switching of different valve ports of the multi-way valve, thereby further reducing costs.

[0027] In addition, a two-way valve is connected to the liquid outlet of the heat exchanger of the liquid cooling device and each liquid outlet of the liquid cooling device. By controlling these two-way valves, the channel between the liquid cooling device and the charging terminal can be disconnected, which is beneficial to the maintenance of the liquid cooling device, thereby improving the reliability of the liquid cooling device in delivering coolant to the charging terminal, thereby improving the reliability of the charging terminal in high-power charging of electric vehicles, and thus improving the user experience.

[0028] In combination with the first aspect, in one possible design, N is an integer greater than or equal to 2. When multiple charging guns among the N charging guns are connected to electric vehicles, the charging terminal is used to send at least one of the following messages to the liquid cooling device: a message requesting the liquid cooling device to output coolant, a message indicating the total coolant flow required by multiple charging guns, and a message indicating the minimum temperature of the coolant required by multiple charging guns.

[0029] Based on the above scheme, the charging terminal sends at least one of the above messages to the liquid cooling device. The liquid cooling device can deliver coolant with corresponding parameters to the charging terminal according to the content of the message, which is conducive to meeting the heat dissipation requirements of each charging gun, and further helps to ensure the normal high-power charging of electric vehicles by the charging terminal, thereby improving the user experience.

[0030] Moreover, in an embodiment of the present application, the message sent by the charging terminal to the liquid cooling device includes a message for indicating the total coolant flow required by multiple charging guns, that is, the charging terminal only needs to send a message of the total coolant flow to the liquid cooling device, which can reduce the complexity of the message and improve transmission efficiency.

[0031] In addition, the message sent by the charging terminal to the liquid cooling device includes a message for indicating the minimum temperature of the coolant required by multiple charging guns. That is, the charging terminal only needs to send a message of the minimum temperature of the coolant required by multiple charging guns to the liquid cooling device. In this way, the temperature of the coolant output by the liquid cooling device to the charging terminal can meet the heat dissipation requirements of each charging gun, and can ensure that the charging terminal can perform high-power charging on the electric vehicle normally, thereby improving the user experience.

[0032] In combination with the first aspect, in one possible design, the charging device is also used to: control the valve opening of the two-way valve corresponding to the liquid cooling channel of each charging gun among the multiple charging guns, so that the flow rate of the coolant flowing into the liquid cooling channel of each charging gun meets the flow requirement of each charging gun.

[0033] Based on the above scheme, the charging equipment can control the valve opening of the two-way valve corresponding to the liquid cooling channel of each charging gun among multiple charging guns, so that the flow rate of coolant flowing into the liquid cooling channel of each charging gun meets the flow requirement of each charging gun, thereby meeting the heat dissipation requirements of each charging gun, and further ensuring that the charging terminal can perform high-power charging of electric vehicles normally, thereby improving the user experience.

[0034] In combination with the first aspect, in one possible design, N is an integer greater than or equal to 2. When multiple charging guns among the N charging guns are connected to electric vehicles, the charging terminal is used to send at least one of the following messages to the liquid cooling device: a message requesting the liquid cooling device to output coolant, a message indicating the coolant flow rate required by each of the multiple charging guns, and a message indicating the minimum temperature of the coolant required by the multiple charging guns.

[0035] Based on the above scheme, the charging terminal sends at least one of the above messages to the liquid cooling device. The liquid cooling device can deliver coolant with corresponding parameters to the charging terminal according to the content of the message, which is conducive to meeting the heat dissipation requirements of each charging gun, and further helps to ensure the normal high-power charging of electric vehicles by the charging terminal, thereby improving the user experience.

[0036] Moreover, in an embodiment of the present application, the message sent by the charging terminal to the liquid cooling device includes a message for indicating the coolant flow rate required by each of the multiple charging guns, that is, the charging terminal sends a message of the coolant flow rate required by each charging gun to the liquid cooling device. In this way, the liquid cooling device can deliver the corresponding flow rate of coolant according to the coolant required by each charging gun, which is simple to implement.

[0037] In addition, the message sent by the charging terminal to the liquid cooling device includes a message for indicating the minimum temperature of the coolant required by multiple charging guns. That is, the charging terminal only needs to send a message of the minimum temperature of the coolant required by multiple charging guns to the liquid cooling device. In this way, the temperature of the coolant output by the liquid cooling device to the charging terminal can meet the heat dissipation requirements of each charging gun, and can ensure that the charging terminal can perform high-power charging on the electric vehicle normally, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a charging system provided in an embodiment of the present application.

[0039] Figure 2 A schematic diagram of an application scenario of a charging pile provided in an embodiment of the present application.

[0040] Figures 3 to 9 A schematic diagram of a charging pile provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0042] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in this article is merely a way to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0043] In the embodiments of the present application, prefixes such as "first" and "second" are used only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present application does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "multiple" is two or more.

[0044] With the development of new energy vehicle technology, many automobile manufacturers have gradually launched electric vehicles. Electric vehicles have become the choice of many users because of their energy saving and environmental protection as well as relatively mature technology.

[0045] The present application can be applied to a system in which a power supply device and a load charge each other through a power distribution matrix, especially for a system including a charging pile and an electric vehicle, the charging pile can use the electric energy from the power grid to charge the electric vehicle, and the electric vehicle can also output its own electric energy back to the power grid.

[0046] Figure 1 The structural diagram of the charging system 10 provided in the embodiment of the present application is exemplified.

[0047] Combination Figure 1 (a) and Figure 1 In (b), the charging system 10 may include a charging device 11 and an electric vehicle 12. The charging device 11 may be used to receive the AC power outputted by the external power grid 20, and convert the AC power into stable DC power and then transmit it to the electric vehicle 12 to charge the electric vehicle 12. Alternatively, the electric vehicle 12 may also output electric energy to the external power grid 20 in reverse.

[0048] In some embodiments, Figure 1 As shown in (a), the charging device 11 is a split-type charging pile. Specifically, the charging device 11 may include a charging host 111, at least one charging terminal 112 and at least one charging gun 113. Among them, the charging host 111 includes multiple charging modules (not shown in the figure), the output ends of the multiple charging modules are connected to the at least one charging terminal 112, the at least one charging terminal 112 is connected to the at least one charging gun 113, and each charging gun 113 is used to connect to the electric vehicle 12. Exemplarily, one charging terminal 112 can be connected to one or more charging guns 113, and one or more charging guns 113 can be connected to the same electric vehicle 12.

[0049] The charging module may include, for example, a plurality of power conversion devices, which may convert the AC power from the external power grid 20 into stable DC power and then transmit it to the charging terminal 112. The plurality of power conversion devices may include, for example, an alternating current-direct current (AC-DC) conversion device and a direct current-direct current (DC-DC) conversion device. The charging terminal 112 transmits the stable DC power to the electric vehicle 12 through the charging gun 113 to charge the electric vehicle.

[0050] In one example, the charging terminal 112 also includes a power distribution component (not shown in the figure), and the charging gun 113 includes a charging cable and a charging gun head. Among them, the output ends of the multiple charging modules in the charging host 111 are connected to one end of the charging cable through the power distribution component, and the other end of the charging cable is connected to the charging gun head. The charging gun head is used to connect to the charging interface of the electric vehicle 12. In addition, the DC power output by the multiple charging modules is delivered to the electric vehicle 12 through the charging gun 113.

[0051] Exemplarily, the power distribution assembly includes contactors, shunts, and fuses, etc., for on-off control of the circuit, current detection, overcurrent protection, etc. In addition, the power distribution assembly may also include a copper busbar, which is connected to the output ends of the multiple charging modules in the charging host 111 and one end of the charging cable in the charging gun 113 to achieve electrical connection between the multiple charging modules and the charging gun 113.

[0052] The charging terminal 112 may include a housing, a human-machine interaction interface, a charging control unit, a metering and billing unit, etc., and is used for information exchange, energy transmission, metering and billing, etc. with the electric vehicle 12.

[0053] The electric vehicle 12 may be a vehicle driven by electric energy, such as a pure electric vehicle / battery electric vehicle (pure EV / battery EV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), or a plug-in hybrid electric vehicle (PHEV).

[0054] In other embodiments, Figure 1 As shown in (b), the charging device 11 is an integrated charging pile. Specifically, the charging device 11 can directly set the human-machine interface, charging control unit and metering and billing unit in the charging host 111, so that the charging device 11 can only include the charging host 111 and at least one charging gun 113 electrically connected to the charging host 111, but not the charging terminal 112. The multiple power conversion devices in the charging host 111 can convert the AC power from the external power grid 20 into stable DC power, and then directly transmit it to the electric vehicle 12 through the charging gun 113.

[0055] As described above, as the charging device 11 continues to evolve into a supercharging type charging device, the charging power output from the multiple charging modules in the charging host 111 to the electric vehicle 12 through the charging gun 113 continues to increase, so as to be able to supercharge the power battery of the electric vehicle 12. However, as the charging power continues to increase, the heat generated by the electric vehicle 12 increases accordingly. If this heat cannot be discharged in time, it will cause the temperature of the electric vehicle 12 to rise. Excessive temperature can easily affect the normal high-power charging of the electric vehicle 12, resulting in a decrease in the charging efficiency and safety of the electric vehicle 12.

[0056] Based on this, the present application provides a charging pile, in which the liquid cooling equipment can provide the required coolant for the electric vehicle to dissipate the heat of the electric vehicle, thereby meeting the heat dissipation requirements of the electric vehicle during high-power charging, thereby improving the efficiency and safety of charging of the electric vehicle.

[0057] The charging pile provided in the embodiment of the present application is introduced below with reference to the accompanying drawings.

[0058] Figure 2 30 is a schematic diagram of an application scenario of a charging pile 30 provided in an embodiment of the present application. It should be noted that, for ease of understanding, Figure 2 In the figure, solid lines represent liquid cooling channel connections, and dashed lines represent power connections.

[0059] See also Figure 2 The charging pile 30 includes a charging device 40 and a liquid cooling device 50 . The charging device 40 is used to charge the electric vehicle 60 . The liquid cooling device 50 is used to dissipate heat from the charging device 40 and the electric vehicle 60 when the charging device 40 charges the electric vehicle 60 .

[0060] It should be understood that in the embodiment of the present application, the charging device 40 may be Figure 1 The split type charging device shown in (a) in FIG. That is, the charging device 40 includes Figure 2 The charging host 41, charging terminal 42 and charging gun 43 are shown. Alternatively, the charging device 40 may also be Figure 1 The integrated charging device shown in (b) in FIG. That is, the charging terminal 42 can be integrated into the charging host 41, so that the charging device 40 only includes the charging host 41 and the charging gun 43. For a detailed description of the charging device 40, please refer to Figure 1 The relevant description of the embodiment will not be repeated here.

[0061] It should also be understood that in the embodiment of the present application, the liquid cooling device 50 can also be separately arranged outside the charging device 40, such as Figure 2 Alternatively, the liquid cooling device may be disposed in the charging device 40, for example, in the charging terminal 42 of the charging device 40 (not shown in the figure).

[0062] In one embodiment, referring to the above Figure 2 The liquid cooling device 50 includes a heat exchanger 51, and the liquid inlet and liquid outlet of the heat exchanger 51 are connected to the liquid cooling channel of the component to be cooled in the charging device 40 to form a liquid supply circuit. The liquid cooling device 50 also includes a liquid cooling connector, which is used to connect to the liquid cooling interface of the electric vehicle 60. The liquid cooling device 50 is used to output coolant to the electric vehicle 60 through the liquid cooling connector.

[0063] In the embodiment of the present application, during the process of the charging device 40 charging the electric vehicle 60, the liquid cooling device 50 can deliver coolant to the electric vehicle 60 through the liquid cooling joint. The coolant can absorb the heat generated during the charging process of the electric vehicle 60, thereby realizing liquid cooling of the electric vehicle 60, thereby meeting the heat dissipation requirements of high-power charging of the electric vehicle 60, which is beneficial to the normal high-power charging of the electric vehicle 60, thereby improving the efficiency and safety of charging of the electric vehicle 60.

[0064] The charging device 40 is used to deliver electric energy to the electric vehicle 60 upon receiving a message indicating that the liquid cooling device 50 has delivered the cooling liquid to the electric vehicle 60 .

[0065] In the embodiment of the present application, after the charging gun 43 is connected to the electric vehicle 60 and the electric vehicle 60 completes a series of preparatory actions before charging, the electric vehicle 60 and the charging device 40 both send messages of the coolant they need to the liquid cooling device 50. After receiving the corresponding message, the liquid cooling device 50 can first deliver the coolant of the corresponding parameters to the electric vehicle 60, and send a message to the charging device 40 indicating that the liquid cooling device 50 has delivered the coolant to the electric vehicle 60. When the charging device 40 receives the message indicating that the liquid cooling device 50 has delivered the coolant to the electric vehicle 60, it delivers electric energy to the electric vehicle 60, which can ensure that the electric vehicle 60 is charged under the condition of having the heat dissipation capability, and can prevent the electric vehicle 60 from being in a charging state but the liquid cooling device 50 cannot deliver the coolant to the electric vehicle 60 in time, which may cause the abnormal charging, thereby further improving the efficiency and safety of the charging of the electric vehicle 60.

[0066] Specifically, if the liquid cooling device 50 delivers coolant to the electric vehicle 60 after the charging device 40 has delivered electric energy to the electric vehicle 60, the coolant may not be delivered in time. In this case, the charging device 40 continues to deliver electric energy to the electric vehicle 60, and the heat generated by the power battery of the electric vehicle continues to increase. Since the liquid cooling device 50 fails to deliver coolant to the electric vehicle 60 in time, the temperature of the power battery continues to rise, thereby affecting the normal high-power charging of the electric vehicle 60. Therefore, the present application is designed to improve the efficiency and safety of electric vehicle charging by having the charging device 40 deliver electric energy to the electric vehicle 60 after receiving a message indicating that the electric vehicle 60 has delivered coolant.

[0067] It can be understood that in the embodiment of the present application, the charging device 40 can also be used to: deliver electric energy to the electric vehicle 60 when it is detected that the charging device 40 has passed through the coolant, which can ensure that the charging device 40 delivers electric energy to the electric vehicle under the condition of having the heat dissipation capability, thereby preventing the charging device 40 from delivering electric energy to the electric vehicle but the liquid cooling device 50 is unable to deliver coolant to the charging device in time, which may cause charging anomalies. This can improve the charging efficiency and safety of the charging device 40.

[0068] Specifically, if the liquid cooling device 50 delivers coolant to the charging device 40 after the charging device 40 has delivered electric energy to the electric vehicle 60, the coolant may not be delivered in time. In this case, the charging device 40 continues to deliver electric energy to the electric vehicle 60, and the heat generated by the charging device 40 continues to increase. Since the liquid cooling device 50 fails to deliver coolant to the charging device 40 in time, the temperature of the charging device 40 continues to rise, thereby affecting the normal high-power charging of the charging device 40. Therefore, the present application is designed to deliver electric energy to the electric vehicle 60 after detecting that the coolant has flowed through the charging device 40, so as to improve the efficiency and safety of charging the charging device 40.

[0069] In order to further improve the reliability of the charging device 40 charging the electric vehicle 60, the present application can also detect the pressure or flow rate of the liquid cooling channel, and perform corresponding actions based on whether the pressure or flow rate of the liquid cooling channel reaches the corresponding preset demand parameters.

[0070] In one embodiment, when the liquid cooling device 50 delivers coolant to the charging device 40, when the pressure of the liquid cooling channel is less than the first preset required pressure, or the flow rate of the liquid cooling channel is less than the first preset required flow rate, the power delivered to the electric vehicle 60 is reduced and a message is sent to the liquid cooling device 50 to instruct to stop delivering coolant.

[0071] Among them, the first preset required pressure is the pressure corresponding to the liquid cooling channel when the charging device 40 charges the electric vehicle 60 at the required power of the electric vehicle 60 and the liquid cooling device 50 transports coolant to the charging device 40 at the flow rate of coolant required by the charging device 40; the first preset required flow rate is the flow rate corresponding to the liquid cooling channel when the charging device 40 charges the electric vehicle 60 at the required power of the electric vehicle 60 and the liquid cooling device 50 transports coolant to the charging device 40 at the flow rate of coolant required by the charging device 40.

[0072] Taking the pressure of the liquid cooling channel as an example, assuming that the charging device 40 charges the electric vehicle 60 with a power of W, and the liquid cooling device 50 delivers coolant to the charging device 40 at the flow rate of coolant required by the charging device 40, the pressure of the liquid cooling channel is the first preset required pressure P1. When the pressure of the liquid cooling channel is P1', and P1'<P1, it means that there is a coolant leakage in the process of the liquid cooling device 50 delivering coolant to the charging device 40. If the charging device 40 continues to charge the electric vehicle 60 with a power of W, the coolant delivered by the liquid cooling device 50 cannot meet the heat dissipation requirements of the charging device 40 due to the leakage of the coolant, thereby affecting the normal charging of the electric vehicle 60 by the charging device 40, and in severe cases, may cause damage to the charging device 40.

[0073] Therefore, when the pressure of the liquid cooling channel is less than the first preset required pressure of the liquid cooling channel, or the flow rate of the liquid cooling channel is less than the first preset required flow rate of the liquid cooling device, the charging device 40 can reduce the power delivered to the electric vehicle 60 and send a message to the liquid cooling device 50 for instructing to stop delivering the coolant. As the power decreases, the heat dissipation demand of the charging device 40 decreases. The charging device 40 can send a message to the liquid cooling device 50 for instructing to stop delivering the coolant, so that the liquid cooling device 50 stops delivering the coolant to the charging device 40. In this case, the heat of the charging device 40 is naturally discharged to the current environment, and the heat dissipation of the liquid cooling device 50 can be achieved. For the electric vehicle 60, since the charging power of the electric vehicle 60 is reduced, the electric vehicle's own thermal management system can be relied on to dissipate heat to meet the heat dissipation demand of the electric vehicle 60, thereby ensuring the normal charging of the electric vehicle 60 by the charging device 40 as much as possible, improving the reliability of the charging device 40 charging the electric vehicle 60, and thus improving the user experience.

[0074] Moreover, when there is a coolant leak during the process of the liquid cooling device 50 delivering coolant to the charging device 40, the specific location of the coolant leak is not determined at this time. The present application designs the liquid cooling device 50 to stop delivering coolant to the charging device 40, so that the liquid cooling channels of the liquid cooling device 50 and the charging device 40 can be detected to determine the specific location of the coolant leak, and repair or replace it to ensure that the charging device 40 can subsequently charge the electric vehicle 60 with high power normally, thereby further improving the reliability of the charging device 40 charging the electric vehicle 60, and thus improving the user experience. In addition, when there is a coolant leak, the coolant of the liquid cooling device 50 may leak. At this time, the liquid cooling device 50 can stop delivering coolant to the electric vehicle 60 to prevent further leakage of the coolant of the liquid cooling device 50.

[0075] Taking into account the user's charging needs, the liquid cooling channels of the liquid cooling device 50 and the charging device 40 can be inspected after the current charging is completed. On the one hand, it can meet the user's charging needs this time, and on the other hand, it can solve the coolant leakage problem caused by the inspection of the liquid cooling channel during the charging process of the electric vehicle 60, thereby further ensuring the normal charging of the electric vehicle 60, improving the reliability of the charging device 40 charging the electric vehicle 60, and thus improving the user experience.

[0076] In specific implementation, a water pump can be arranged between the liquid cooling device 50 and the liquid cooling channel of the component to be cooled in the charging device 40. By detecting the pressure or flow rate of the water pump, it can be determined whether there is a leak in the liquid cooling channel that transports coolant to the component to be cooled. Therefore, when the liquid cooling channel leaks, the charging device 40 can reduce the power transported to the electric vehicle 60 and send a message to the liquid cooling device 50 to instruct to stop transporting coolant, so as to ensure the normal charging of the electric vehicle 60 by the charging device 40 as much as possible, improve the reliability of the charging of the electric vehicle 60 by the charging device 40, and thus improve the user experience.

[0077] In one embodiment, the charging pile 30 is used to: when the liquid cooling device 50 delivers coolant to the electric vehicle 60, when the pressure of the liquid cooling channel between the liquid cooling device 50 and the electric vehicle 60 is less than the second preset required pressure, or the flow rate of the liquid cooling channel between the liquid cooling device 50 and the electric vehicle 60 is less than the second preset required flow rate, stop delivering electric energy to the electric vehicle 60.

[0078] Among them, the second preset required pressure is the pressure corresponding to the liquid cooling channel between the liquid cooling device 50 and the electric vehicle 60 when the charging device 40 charges the electric vehicle 60 with the required power of the electric vehicle 60 and the liquid cooling device 50 transports coolant to the electric vehicle 60 at the flow rate of coolant required by the electric vehicle 60; the second preset required flow rate is the flow rate corresponding to the liquid cooling channel between the liquid cooling device 50 and the electric vehicle 60 when the charging device 40 charges the electric vehicle 60 with the required power of the electric vehicle 60 and the liquid cooling device 50 transports coolant to the electric vehicle 60 at the flow rate of coolant required by the electric vehicle 60.

[0079] Taking the flow rate of the liquid cooling channel as an example, assuming that the charging device 40 charges the electric vehicle 60 with a power of W, and the liquid cooling device 50 delivers coolant to the electric vehicle 60 at the flow rate of coolant required by the electric vehicle 60, the flow rate of the liquid cooling channel is the second preset required flow rate V2. When the flow rate of the liquid cooling channel is V2', and V2'<V2, it means that there is a coolant leakage in the process of the liquid cooling device 50 delivering coolant to the electric vehicle 60. If the charging device 40 continues to charge the electric vehicle 60 with a power of W, the coolant delivered by the liquid cooling device 50 cannot meet the heat dissipation requirements of the electric vehicle 60 due to the leakage of the coolant. Severely, when the liquid cooling channel inside the electric vehicle is damaged, the leakage of the coolant may also cause damage to the power battery, resulting in a reduction in the life of the power battery.

[0080] It should be noted that when there is a coolant leak during the process of the liquid cooling device 50 conveying coolant to the electric vehicle 60, the specific location of the coolant leak is not determined at this time. There may be a coolant leak in the liquid cooling channel of the liquid cooling device 50, there may be a coolant leak in the liquid cooling channel of the electric vehicle 60, or there may be a coolant leak in the liquid cooling channel of both the liquid cooling device 50 and the electric vehicle 60. The present application designs the charging device 40 to stop conveying electrical energy to the electric vehicle 60, thereby preventing the problem of damage to the components of the electric vehicle caused by the leakage of coolant in the electric vehicle.

[0081] In specific implementation, a water pump can be arranged between the liquid cooling device 50 and the electric vehicle 60. By detecting the pressure or flow rate of the water pump, it can be determined whether there is a leak in the liquid cooling channel that transports coolant to the electric vehicle. Therefore, when the liquid cooling channel leaks, the charging device 40 can stop supplying electric energy to the electric vehicle 60 to prevent the coolant from flowing into the power battery and causing damage to the power battery, thereby extending the life of the power battery.

[0082] As mentioned above, the electric vehicle 60 and the charging device 40 can both send messages of the coolant they need to the liquid cooling device 50, and the liquid cooling device 50 performs corresponding actions after receiving the corresponding messages. Among them, the coolant message sent by the electric vehicle 60 can be forwarded to the liquid cooling device 50 through the charging device 40.

[0083] In one embodiment, when the charging device 40 is connected to the electric vehicle 60, the charging device 40 is also used to: receive a message for requesting the liquid cooling device 50 to output coolant for the electric vehicle 60, and send a message to the liquid cooling device 50 for requesting the liquid cooling device 50 to output coolant for the electric vehicle 60, and a message for requesting the liquid cooling device 50 to output coolant for the charging device 40.

[0084] Specifically, if the electric vehicle 60 needs to request the liquid cooling device 50 to deliver coolant for it, the electric vehicle 60 can send a message for requesting the liquid cooling device 50 to output coolant for it to the charging device 40, and the charging device 40 then forwards the message to the liquid cooling device 50, so that the liquid cooling device 50 delivers the corresponding coolant to the electric vehicle 60 according to the coolant requested in the message. Since the charging device 40 also sends a message for requesting coolant for the charging device 40 to the liquid cooling device 50, it is equivalent to that the message for requesting coolant for the electric vehicle 60 and the message for requesting coolant for the charging device 40 are both managed by the charging device 40, so that the communication between the liquid cooling device 50 and the electric vehicle 60 can be reduced, thereby simplifying the process design of the liquid cooling device 50.

[0085] The specific connection between the liquid cooling device 50 and the charging terminal will be introduced below.

[0086] In one embodiment, the liquid cooling device includes M liquid inlets and M liquid outlets, the charging device includes M charging terminals, the components to be cooled of each charging terminal include N charging guns, and M and N are both integers greater than or equal to 1.

[0087] The M liquid outlets are connected to the liquid injection ports of the M charging terminals in a one-to-one correspondence, and the M liquid inlets are connected to the liquid return ports of the M charging terminals in a one-to-one correspondence. Figure 3 The liquid cooling device 50 includes two liquid inlets and two liquid outlets, the two liquid outlets are respectively liquid outlets 511a and 511b, and the two liquid inlets are respectively liquid inlets 512a and 512b. The charging device 40 includes two charging terminals, the two charging terminals are respectively charging terminals 42a and 42b. The liquid outlet 511a is connected to the liquid injection port 311a of the charging terminal 42a, and the liquid inlet 512a is connected to the liquid return port 312a of the charging terminal 42a. The liquid outlet 511b is connected to the liquid injection port 311b of the charging terminal 42b, and the liquid inlet 512b is connected to the liquid return port 312b of the charging terminal 42b.

[0088] In the embodiment of the present application, the liquid filling port of the charging terminal 42 is connected to the liquid inlet of the liquid cooling channel of each of the N charging guns 43, and the liquid return port of the charging terminal 42 is connected to the liquid outlet of the liquid cooling channel of each of the N charging guns 43.

[0089] Continue to refer Figure 3The charging terminal 42a includes two charging guns 420a and 430a. The liquid injection port 311a of the charging terminal 42a is connected to the liquid inlet 421a1 of the liquid cooling channel of the charging gun 420a and the liquid inlet 431a1 of the liquid cooling channel of the charging gun 430a. The liquid return port 312a of the charging terminal 42a is connected to the liquid outlet 421a2 of the liquid cooling channel of the charging gun 420a and the liquid outlet 431a2 of the liquid cooling channel of the charging gun 430a.

[0090] The charging terminal 42b includes two charging guns 420b and 430b. The liquid injection port 311b of the charging terminal 42b is connected to the liquid inlet 421b1 of the liquid cooling channel of the charging gun 420b and the liquid inlet 431b1 of the liquid cooling channel of the charging gun 430b. The liquid return port 312b of the charging terminal 42b is connected to the liquid outlet 421b2 of the liquid cooling channel of the charging gun 420b and the liquid outlet 431b2 of the liquid cooling channel of the charging gun 430b.

[0091] In the embodiment of the present application, during the process of charging the electric vehicle by the charging device 40, the liquid cooling device 50 can deliver cooling liquid to the charging terminal of the charging device 40. Taking the example of the charging gun 420a of the charging terminal 42a being connected to the electric vehicle, in this example, the charging gun 420a can deliver electric energy to the electric vehicle, and the liquid cooling device 50 can deliver cooling liquid to the liquid cooling channel of the charging gun 420a, and deliver the cooling liquid that absorbs the heat of the charging terminal 42a through the liquid inlet 512a connected to the liquid return port 312a of the charging terminal 42a, and the cooling liquid that absorbs the heat flows into the liquid cooling device 50, and the cooling liquid that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled cooling liquid flows into the charging terminal 42a through the liquid outlet 511a of the liquid cooling device 50, thereby realizing the cooling of the charging terminal 42a.

[0092] Specifically, in the process of the liquid cooling device 50 transporting coolant to the liquid cooling channel of the charging gun 420a, the flow direction of the coolant can be: liquid outlet 511a - liquid filling port 311a of the charging terminal 42a - liquid inlet 421a1 of the liquid cooling channel of the charging gun 420a - liquid outlet 421a2 of the liquid cooling channel of the charging gun 420a - liquid return port 312a of the charging terminal 42a - liquid inlet 512a.

[0093] When the charging guns 420a and 430a of the charging terminal 42a are connected to the electric vehicle, the liquid cooling device 50 can transport coolant to the liquid cooling channels of the charging guns 420a and 430a. The flow direction of the coolant transported by the liquid cooling device 50 to the liquid cooling channel of the charging gun 420a refers to the above. The flow direction of the coolant transported by the liquid cooling device 50 to the liquid cooling channel of the charging gun 430a can be: liquid outlet 511a - liquid filling port 311a of the charging terminal 42a - liquid inlet 431a1 of the liquid cooling channel of the charging gun 430a - liquid outlet 431a2 of the liquid cooling channel of the charging gun 430a - liquid return port 312a of the charging terminal 42a - liquid inlet 512a.

[0094] In a possible implementation, the charging gun 420a of the charging terminal 42a and the charging gun 420b of the charging terminal 42b are connected to the electric vehicle, that is, the charging guns 420a and 420b both transmit electric energy to the electric vehicle, and the liquid cooling device 50 can transmit coolant to the liquid cooling channels of the charging guns 420a and 420b. For the liquid cooling device 50 to transmit coolant to the liquid cooling channel of the charging gun 420a, the coolant that absorbs the heat of the charging terminal 42a is transmitted through the liquid inlet 512a connected to the liquid return port 312a of the charging terminal 42a, and the coolant that absorbs the heat flows into the liquid cooling device 50. The coolant that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled coolant flows into the charging terminal 42a through the liquid outlet 511a of the liquid cooling device 50, thereby realizing the cooling of the charging terminal 42a. The liquid cooling device 50 transports coolant to the liquid cooling channel of the charging gun 420b, and transports the coolant after absorbing the heat of the charging terminal 42b through the liquid inlet 512b connected to the liquid return port 312b of the charging terminal 42b. The coolant after absorbing the heat flows into the liquid cooling device 50. The coolant after absorbing the heat can be cooled inside the liquid cooling device 50. The cooled coolant flows into the charging terminal 42b through the liquid outlet 511b of the liquid cooling device 50, thereby realizing cooling of the charging terminal 42b.

[0095] Specifically, in the process of the liquid cooling device 50 delivering the coolant to the liquid cooling channel 420a of the charging gun, the flow direction of the coolant can be referred to above and will not be described in detail.

[0096] In the process of the liquid cooling device 50 transporting coolant to the liquid cooling channel of the charging gun 420b, the flow direction of the coolant can be: liquid outlet 511b - liquid filling port 311b of the charging terminal 42b - liquid inlet 421b1 of the liquid cooling channel of the charging gun 420b - liquid outlet 421b2 of the liquid cooling channel of the charging gun 420b - liquid return port 312b of the charging terminal 42b - liquid inlet 512b.

[0097] Based on the above scheme, since the M liquid outlets are connected one-to-one with the liquid filling ports of the M charging terminals, and the M liquid inlets are connected one-to-one with the liquid return ports of the M charging terminals, when one charging terminal or at least part of the charging guns of multiple charging terminals are connected to the electric vehicle, the liquid cooling device 50 can transport cooling liquid to the corresponding charging terminal through the liquid outlet connected to the liquid filling port of the one or more charging terminals, thereby meeting the heat dissipation requirements of each charging terminal. In this way, the normal charging of the electric vehicle by each charging terminal can be guaranteed as much as possible, the reliability of the charging terminal charging the electric vehicle can be improved, and the user experience can be improved.

[0098] In addition, since the liquid cooling device includes M liquid outlets and M liquid inlets, the number of liquid outlets is small, the design is simple, and it is easy to implement.

[0099] It should be understood that in some possible implementations, the liquid cooling device may also include a liquid outlet and a liquid inlet, wherein the liquid outlet is connected to the liquid injection ports of multiple charging terminals through a multi-way valve, and the liquid inlet is connected to the liquid return ports of multiple charging terminals through a multi-way valve. When the charging gun of a charging terminal is connected to an electric vehicle, the valve port of the charging terminal connected to the valve port of the liquid cooling device is controlled to be connected, so that the liquid cooling device can deliver coolant to the charging terminal to dissipate heat for the charging terminal.

[0100] It should be noted that, in one embodiment, Figure 4 As shown, each charging terminal also includes a power distribution component and a heat exchanger. The power distribution component is connected between the charging gun and the charging module. The heat exchanger of the charging terminal includes a liquid cooling channel and a gas channel. The liquid cooling channel of the heat exchanger of the charging terminal is used for heat exchange with the gas channel.

[0101] Specifically, refer to Figure 4 The charging terminal 42a also includes a power distribution component 440a and a heat exchanger 441a, and the liquid cooling channel of the heat exchanger 441a is used to dissipate heat for the gas in the power distribution component 440a. The liquid injection port 311a of the charging terminal 42a is also connected to the liquid inlet 441a1 of the liquid cooling channel of the heat exchanger 441a. The liquid return port 312a of the charging terminal 42a is also connected to the liquid outlet 441a2 of the liquid cooling channel of the heat exchanger 441a.

[0102] The charging terminal 42b also includes a power distribution component 440b and a heat exchanger 441b. The heat exchanger 441b includes a liquid cooling channel and a gas channel. The liquid cooling channel is used to exchange heat with the gas channel. The liquid injection port 311b of the charging terminal 42b is also connected to the liquid inlet 441b1 of the liquid cooling channel of the heat exchanger 441b. The liquid return port 312b of the charging terminal 42b is also connected to the liquid outlet 441b2 of the liquid cooling channel of the heat exchanger 441b.

[0103] In the embodiment of the present application, during the process of charging the electric vehicle by the charging device 40, the liquid cooling device 50 can deliver cooling liquid to the charging terminal of the charging device 40. Taking the charging gun 420a of the charging terminal 42a connected to the electric vehicle as an example, in this example, the charging gun 420a can deliver electric energy to the electric vehicle, and the liquid cooling device 50 can deliver cooling liquid to the liquid cooling channel of the charging gun 420a and the liquid cooling channel of the heat exchanger 441a, and deliver the cooling liquid that absorbs the heat of the charging terminal 42a through the liquid inlet 512a connected to the liquid return port 312a of the charging terminal 42a, and the cooling liquid that absorbs the heat flows into the liquid cooling device 50, and the cooling liquid that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled cooling liquid flows into the charging terminal 42a through the liquid outlet 511a of the liquid cooling device 50, thereby realizing the cooling of the charging terminal 42a.

[0104] Specifically, in the process of the liquid cooling device 50 delivering the coolant to the liquid cooling channel 420a of the charging gun, the flow direction of the coolant can be referred to above and will not be described in detail.

[0105] In the process of the liquid cooling device 50 transporting coolant to the liquid cooling channel of the heat exchanger 441a, the flow direction of the coolant can be: liquid outlet 511a - liquid filling port 311a of the charging terminal 42a - liquid inlet 441a1 of the liquid cooling channel of the heat exchanger 441a - liquid outlet 441a2 of the liquid cooling channel of the heat exchanger 441a - liquid return port 312a of the charging terminal 42a - liquid inlet 512a.

[0106] In an embodiment of the present application, each charging terminal also includes a power distribution component and a heat exchanger. The heat exchanger of the charging terminal includes a liquid cooling channel and a gas channel. In this way, the liquid cooling device 50 can transport coolant to the liquid cooling channel of the heat exchanger of the charging terminal. The coolant can take away the heat of the gas channel of the heat exchanger of the charging terminal, thereby achieving heat dissipation of the power distribution component, preventing damage to the power distribution component caused by excessive temperature of the power distribution component, thereby extending the life of the power distribution component.

[0107] In one embodiment, each charging terminal includes N two-way valves, and the N two-way valves are connected to the liquid cooling channels of the N charging guns in a one-to-one correspondence. One valve port of each of the N two-way valves is connected to the liquid inlet of the corresponding liquid cooling channel, and the other valve port of each of the N two-way valves is connected to the liquid injection port of the corresponding charging terminal.

[0108] refer to Figure 5, the charging terminals 42a and 42b each include two two-way valves, and the two two-way valves included in the charging terminal 42a are two-way valves 450a1 and 450a2. Among them, one valve port of the two-way valve 450a1 is connected to the liquid inlet 421a1 of the liquid cooling channel of the charging gun 420a, and the other valve port of the two-way valve 450a1 is connected to the liquid injection port 311a, that is, the two-way valve 450a1 is connected between the liquid injection port 311a and the liquid inlet 421a1 of the liquid cooling channel of the charging gun 420a; one valve port of the two-way valve 450a2 is connected to the liquid inlet 431a1 of the liquid cooling channel of the charging gun 430a, and the other valve port of the two-way valve 450a2 is connected to the liquid injection port 311a, that is, the two-way valve 450a2 is connected between the liquid injection port 311a and the liquid inlet 431a1 of the liquid cooling channel of the charging gun 430a.

[0109] The two two-way valves included in the charging terminal 42b are two-way valves 450b1 and 450b2 respectively, wherein one valve port of the two-way valve 450b1 is connected to the liquid inlet 421b1 of the liquid cooling channel of the charging gun 420b, and the other valve port of the two-way valve 450b1 is connected to the liquid injection port 311b, that is, the two-way valve 450b1 is connected between the liquid injection port 311b and the liquid inlet 421b1 of the liquid cooling channel of the charging gun 420b; one valve port of the two-way valve 450b2 is connected to the liquid inlet 431b1 of the liquid cooling channel of the charging gun 430b, and the other valve port of the two-way valve 450b2 is connected to the liquid injection port 311b, that is, the two-way valve 450b2 is connected between the liquid injection port 311b and the liquid inlet 431b1 of the liquid cooling channel of the charging gun 430b.

[0110] In the embodiment of the present application, since each charging terminal includes N two-way valves and the N two-way valves are connected one-to-one with the liquid cooling channels of N charging guns, it is equivalent to that the liquid cooling device 50 and the liquid cooling channel of each charging gun are individually controlled by a two-way valve. When the charging gun of one of the M charging terminals is connected to the electric vehicle, the charging terminal can control the two-way valve connected to the liquid cooling channel of the charging gun to open the liquid cooling channel between the liquid cooling device 50 and the charging gun. The control is simple and easy to implement.

[0111] For example, when the charging gun 420a of the charging terminal 42a is connected to the electric vehicle, that is, the charging gun 420a transmits electric energy to the electric vehicle, the charging terminal 42a controls the two-way valve 450a1 to open the liquid cooling channel between the liquid cooling device 50 and the charging gun 420a, so that the liquid cooling device 50 can transmit coolant to the liquid cooling channel of the charging gun 420a, and transmit the coolant that absorbs the heat of the charging terminal 42a through the liquid inlet 512a connected to the return liquid port 312a of the charging terminal 42a. The coolant that absorbs the heat flows into the liquid cooling device 50. The coolant that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled coolant flows into the charging terminal 42a through the liquid outlet 511a of the liquid cooling device 50, thereby realizing the cooling of the charging gun 420a of the charging terminal 42a.

[0112] In addition, the present application is designed to connect a two-way valve between the liquid filling port of the charging terminal and the liquid inlet of the liquid cooling channel of each charging gun, which can reduce costs. Moreover, compared with using a multi-way valve to connect the liquid filling port of the charging terminal and the liquid inlet of the liquid cooling channel of each charging gun, the solution of the present application can solve the problem of valve loosening or damage caused by repeated switching of different valve ports of the multi-way valve, which can further reduce costs.

[0113] Continue to refer Figure 5 In one embodiment, the liquid outlet 513 of the heat exchanger 51 and each liquid outlet of the liquid cooling device 50 are connected to a two-way valve.

[0114] Specifically, the liquid outlet 513 of the heat exchanger 51 and the liquid outlet 511a of the liquid cooling device 50 are connected to a two-way valve 520a, and the liquid outlet 513 of the heat exchanger 51 and the liquid outlet 511b of the liquid cooling device 50 are connected to a two-way valve 520b. In other words, one valve port of the two-way valve 520a is connected to the liquid outlet 511a, and the other valve port of the two-way valve 520b is connected to the liquid outlet 513 of the heat exchanger 51. Since the liquid outlet 511a is connected to the charging terminal 42a, it is equivalent to that the two-way valve 520a is connected between the heat exchanger 51 and the charging terminal 42a. One valve port of the two-way valve 520b is connected to the liquid outlet 511b, and the other valve port of the two-way valve 520b is connected to the liquid outlet 513 of the heat exchanger 51. Since the liquid outlet 511b is connected to the charging terminal 42b, it is equivalent to that the two-way valve 520b is connected between the heat exchanger 51 and the charging terminal 42b.

[0115] In the embodiment of the present application, the liquid cooling passages between the liquid cooling device 50 and the charging terminals 42a and 42b can be controlled respectively by controlling the two-way valves 520a and 520b. Specifically, when the charging gun of the charging terminal 42a is connected to the electric vehicle, the liquid cooling passage between the liquid cooling device 50 and the charging terminal 42a can be opened by controlling the two-way valve 520a; when the charging gun of the charging terminal 42b is connected to the electric vehicle, the liquid cooling passage between the liquid cooling device 50 and the charging terminal 42b can be opened by controlling the two-way valve 520b; the control is simple and easy to implement.

[0116] Moreover, the present application designs a two-way valve to connect each liquid outlet of the liquid cooling device 50 and the liquid outlet of the heat exchanger 51 of the liquid cooling device 50, which can reduce costs. Moreover, compared with using a multi-way valve to connect the liquid outlet of the heat exchanger 51 of the liquid cooling device 50 and each liquid outlet of the liquid cooling device 50, the solution of the present application can solve the problem of valve loosening or damage caused by repeated switching of different valve ports of the multi-way valve, thereby further reducing costs.

[0117] In addition, by controlling the two-way valves 520a and 520b, the liquid cooling channel between the liquid cooling device 50 and the charging terminal 42 can be disconnected, which is beneficial to the maintenance of the liquid cooling device 50, thereby improving the reliability of the liquid cooling device 50 in delivering coolant to the charging terminal 42, thereby improving the reliability of the charging terminal 42 in high-power charging of the electric vehicle 60, thereby improving the user experience.

[0118] Above Figure 4 It is pointed out that each liquid cooling device may also include a power distribution component and a heat exchanger, and accordingly, Figure 6 As shown, each charging terminal also includes a two-way valve, one valve port of which is connected to the liquid inlet of the liquid cooling channel of the heat exchanger of the charging terminal, and the other valve port of which is connected to the liquid filling port of the corresponding charging terminal.

[0119] Specifically, refer to Figure 6 The charging terminal 42a also includes a two-way valve 450a3, wherein one valve port of the two-way valve 450a3 is connected to the liquid inlet 441a1 of the liquid cooling channel of the heat exchanger 441a, and the other valve port of the two-way valve 450a3 is connected to the liquid injection port 311a, that is, the two-way valve 450a3 is connected between the liquid injection port 311a and the liquid inlet 441a1 of the liquid cooling channel of the heat exchanger 441a.

[0120] The charging terminal 42b also includes a two-way valve 450b3, wherein one valve port of the two-way valve 450b3 is connected to the liquid inlet 441b1 of the liquid cooling channel of the heat exchanger 441b, and the other valve port of the two-way valve 450b3 is connected to the liquid injection port 311b, that is, the two-way valve 450b3 is connected between the liquid injection port 311b and the liquid inlet 441b1 of the liquid cooling channel of the heat exchanger 441b.

[0121] In an embodiment of the present application, when a charging gun of a charging terminal is connected to an electric vehicle, the charging terminal can control the two-way valve connected to the charging gun to open the liquid cooling channel between the liquid cooling device and the charging gun, and control the two-way valve connected to the heat exchanger of the charging terminal to open the liquid cooling channel between the liquid cooling device and the heat exchanger of the charging terminal. This is equivalent to each liquid cooling channel between the liquid cooling device and the charging terminal being individually controlled by a two-way valve, which is simple to control and easy to implement.

[0122] For example, when the charging gun 420a of the charging terminal 42a is connected to the electric vehicle, that is, the charging gun 420a transmits electric energy to the electric vehicle, the charging terminal 42a controls the two-way valve 450a1 to open the liquid cooling channel between the liquid cooling device 50 and the charging gun 420a, and controls the two-way valve 450a3 to open the liquid cooling channel between the liquid cooling device 50 and the heat exchanger, so that the liquid cooling device 50 can transport coolant to the liquid cooling channel of the charging gun 420a and the liquid cooling channel of the heat exchanger 441a, and transport the coolant that absorbs the heat of the charging terminal 42a through the liquid inlet 512a connected to the liquid return port 312a of the charging terminal 42a. The coolant that absorbs the heat flows into the liquid cooling device 50. The coolant that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled coolant flows into the charging terminal 42a through the liquid outlet 511a of the liquid cooling device 50, thereby realizing the cooling of the charging gun 420a and the distribution component 440a of the charging terminal 42a.

[0123] In one embodiment, the liquid cooling device includes M groups of liquid inlets and M groups of liquid outlets, each group of liquid inlets includes N liquid inlets, and each group of liquid outlets includes N liquid outlets. The charging device includes M charging terminals, and the components to be cooled of each charging terminal include N charging guns, and M and N are both integers greater than or equal to 1.

[0124] Furthermore, the M groups of liquid outlets are connected one-to-one with the M charging terminals, the M groups of liquid inlets are connected one-to-one with the M charging terminals, the N liquid outlets of each group of liquid outlets are connected one-to-one with the N liquid injection ports of a charging terminal, and the N liquid inlets of each group of liquid inlets are connected with the N liquid return ports of a charging terminal.

[0125] Take M as 2 and N as 2 as an example, refer to Figure 7The liquid cooling device 50 includes two groups of liquid outlets and two groups of liquid inlets, each group of liquid outlets includes two liquid outlets, and each group of liquid inlets includes two liquid inlets. One group of liquid outlets includes liquid outlets 511a1 and 511a2, and one group of liquid inlets includes 512a1 and 512a2. Another group of liquid outlets includes liquid outlets 511b1 and 511b2, and another group of liquid inlets includes liquid inlets 512b1 and 512b2.

[0126] The charging device 40 includes two charging terminals, which are charging terminals 42a and 42b. One group of liquid outlets is connected to the liquid injection port of the charging terminal 42a, and one group of liquid inlets is connected to the liquid return port of the charging terminal 42a. Specifically, the liquid outlet 511a1 is connected to the liquid injection port 311a1 of the charging terminal 42a, and the liquid outlet 511a2 is connected to the liquid injection port 311a2 of the charging terminal 42a. The liquid inlet 512a1 is connected to the liquid return port 312a1 of the charging terminal 42a, and the liquid inlet 512a2 is connected to the liquid return port 312a2 of the charging terminal 42a.

[0127] Another set of liquid outlets is connected to the liquid injection port of the charging terminal 42b, and another set of liquid inlets is connected to the liquid return port of the charging terminal 42b. Specifically, the liquid outlet 511b1 is connected to the liquid injection port 311b1 of the charging terminal 42b, and the liquid outlet 511b2 is connected to the liquid injection port 311b2 of the charging terminal 42b. The liquid inlet 512b1 is connected to the liquid return port 312b1 of the charging terminal 42b, and the liquid inlet 512b2 is connected to the liquid return port 312b2 of the charging terminal 42b.

[0128] In the embodiment of the present application, the N liquid filling ports are connected one-to-one with the liquid inlets of the liquid cooling channels of the N charging guns, and the N liquid return ports are connected one-to-one with the liquid outlets of the liquid cooling channels of the N charging guns.

[0129] Continue to refer Figure 7 The charging terminal 42a includes two charging guns 420a and 430a. The liquid injection port 311a1 of the charging terminal 42a is connected to the liquid inlet 421a1 of the liquid cooling channel of the charging gun 420a, and the liquid injection port 311a2 of the charging terminal 42a is connected to the liquid inlet 431a1 of the liquid cooling channel of the charging gun 430a. The liquid return port 312a1 of the charging terminal 42a is connected to the liquid outlet 421a2 of the liquid cooling channel of the charging gun 420a, and the liquid return port 312a2 of the charging terminal 42a is connected to the liquid outlet 431a2 of the liquid cooling channel of the charging gun 430a.

[0130] The charging terminal 42b includes two charging guns 420b and 430b. The liquid injection port 311b1 of the charging terminal 42b is connected to the liquid inlet 421b1 of the liquid cooling channel of the charging gun 420b, and the liquid injection port 311b2 of the charging terminal 42b is connected to the liquid inlet 431b1 of the liquid cooling channel of the charging gun 430b. The liquid return port 312b1 of the charging terminal 42b is connected to the liquid outlet 421b2 of the liquid cooling channel of the charging gun 420b, and the liquid return port 312b2 of the charging terminal 42b is connected to the liquid outlet 431b2 of the liquid cooling channel of the charging gun 430b.

[0131] In the embodiment of the present application, during the process of charging the electric vehicle by the charging device 40, the liquid cooling device 50 can deliver cooling liquid to the charging terminal of the charging device 40. Taking the charging gun 420a of the charging terminal 42a connected to the electric vehicle as an example, in this example, the charging gun 420a delivers electric energy to the electric vehicle, and the liquid cooling device 50 can deliver cooling liquid to the liquid cooling channel of the charging gun 420a, and deliver the cooling liquid that absorbs the heat of the charging terminal 42a through the liquid inlet 512a1 connected to the liquid return port 312a1 of the charging terminal 42a, and the cooling liquid that absorbs the heat flows into the liquid cooling device 50, and the cooling liquid that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled cooling liquid flows into the charging terminal 42a through the liquid outlet 511a1 of the liquid cooling device 50, thereby realizing the cooling of the charging terminal 42a.

[0132] Specifically, in the process of the liquid cooling device 50 transporting coolant to the liquid cooling channel of the charging gun 420a, the flow direction of the coolant can be: liquid outlet 511a1 - liquid filling port 311a1 of the charging terminal 42a - liquid inlet 421a1 of the liquid cooling channel of the charging gun 420a - liquid outlet 421a2 of the liquid cooling channel of the charging gun 420a - liquid return port 312a1 of the charging terminal 42a - liquid inlet 512a1.

[0133] When the charging guns 420a and 430a of the charging terminal 42a are connected to the electric vehicle, the liquid cooling device 50 can transport coolant to the liquid cooling channels of the charging guns 420a and 430a. The flow direction of the coolant transported by the liquid cooling device 50 to the liquid cooling channel of the charging gun 420a refers to the above. The flow direction of the coolant transported by the liquid cooling device 50 to the liquid cooling channel of the charging gun 430a can be: liquid outlet 511a2 - liquid filling port 311a2 of the charging terminal 42a - liquid inlet 431a1 of the liquid cooling channel of the charging gun 430a - liquid outlet 431a2 of the liquid cooling channel of the charging gun 430a - liquid return port 312a2 of the charging terminal 42a - liquid inlet 512a2. In one example, the charging gun 420a of the charging terminal 42a and the charging gun 420b of the charging terminal 42b are connected to an electric vehicle, and the charging guns 420a and 420b both deliver electric energy to the electric vehicle, and the liquid cooling device 50 can deliver coolant to the liquid cooling channels of the charging guns 420a and 420b. For the liquid cooling device 50 to deliver coolant to the liquid cooling channel of the charging gun 420a, the coolant that absorbs the heat of the charging terminal 42a is delivered through the liquid inlet 512a1 connected to the liquid return port 312a1 of the charging terminal 42a, and the liquid inlet 512a1 connected to the liquid return port 312a1 of the charging terminal 42a, and the coolant that absorbs the heat flows into the liquid cooling device 50, and the liquid cooling device 50 can cool the coolant that absorbs the heat inside, and the cooled coolant flows into the charging terminal 42a through the liquid outlet 511a1 of the liquid cooling device 50, thereby achieving cooling and cooling of the charging terminal 42a. The liquid cooling device 50 transports coolant to the liquid cooling channel of the charging gun 420b, and transports the coolant that absorbs the heat of the charging terminal 42b through the liquid inlet 512b1 connected to the liquid return port 312b1 of the charging terminal 42b. The coolant that absorbs the heat flows into the liquid cooling device 50. The coolant that absorbs the heat can be cooled inside the liquid cooling device 50. The cooled coolant flows into the charging terminal 42b through the liquid outlet 511b1 of the liquid cooling device 50, thereby realizing cooling of the charging terminal 42b.

[0134] Specifically, in the process of the liquid cooling device 50 delivering the coolant to the liquid cooling channel 420a of the charging gun, the flow direction of the coolant can be referred to above and will not be described in detail.

[0135] In the process of the liquid cooling device 50 transporting coolant to the liquid cooling channel of the charging gun 420b, the flow direction of the coolant can be: liquid outlet 511b1 - liquid filling port 311b1 of the charging terminal 42b - liquid inlet 421b1 of the liquid cooling channel of the charging gun 420b - liquid outlet 421b2 of the liquid cooling channel of the charging gun 420b - liquid return port 312b1 of the charging terminal 42b - liquid inlet 512b1.

[0136] Based on the above scheme, since the M groups of liquid outlets are connected one-to-one with the M charging terminals, and the M groups of liquid inlets are connected one-to-one with the M charging terminals, when the charging guns of one charging terminal or multiple charging terminals are connected to the electric vehicle, a group of liquid outlets in the liquid cooling device 50 connected to the one or more charging terminals transport coolant to the corresponding charging terminal, thereby meeting the heat dissipation requirements of each charging terminal. In this way, it is possible to ensure that each charging terminal charges the electric vehicle normally, improve the reliability of the charging terminal charging the electric vehicle, and thus enhance the user experience.

[0137] In addition, the M groups of liquid outlets of the liquid cooling device 50 include N liquid outlets, and the M groups of liquid inlets include N liquid inlets, and the N liquid outlets of each group of liquid outlets are connected one-to-one with the N liquid filling ports of a charging terminal, and the N liquid inlets of each group of liquid inlets are connected with the N liquid return ports of a charging terminal. In this way, the liquid cooling device 50 transports coolant to the liquid inlets of the liquid cooling channels of different liquid cooling guns through different liquid outlets, and the coolant flowing out of the liquid outlet of the liquid cooling channel of each liquid cooling gun flows into the liquid cooling device through different liquid inlets of the liquid cooling device 50. Even if a liquid port of the liquid cooling device 50 or a liquid port of the charging device leaks, it does not affect the liquid cooling device 50 from transporting coolant to the liquid cooling channels of other charging guns of the charging device through other liquid ports, thereby improving the reliability of the overall heat dissipation of the M charging terminals by the liquid cooling device 50.

[0138] In one embodiment, continue to refer to Figure 8 The liquid outlet 513 of the heat exchanger 51 and each liquid outlet of the liquid cooling device 50 are connected to a two-way valve.

[0139] refer to Figure 8 The liquid cooling device 50 includes four liquid outlets 511a1, 511a2, 520b1, and 520b2. The liquid outlet 513 of the heat exchanger 51 and the four liquid outlets 511a1 of the liquid cooling device 50 are connected to two-way valves 520a1, 520a2, 520b1, and 520b2 in sequence.

[0140] Specifically, the liquid outlet 513 of the heat exchanger 51 and the liquid outlet 511a1 of the liquid cooling device 50 are connected to a two-way valve 520a1, and the liquid outlet 513 of the heat exchanger 51 and the liquid outlet 511a2 of the liquid cooling device 50 are connected to a two-way valve 520a2. In other words, one valve port of the two-way valve 520a1 is connected to the liquid outlet 511a1, and the other valve port of the two-way valve 520a1 is connected to the liquid outlet 513 of the heat exchanger 51, that is, the two-way valve 520a1 is connected between the liquid outlet 511a1 and the liquid outlet 513 of the heat exchanger 51; one valve port of the two-way valve 520a2 is connected to the liquid outlet 511a2, and the other valve port of the two-way valve 520a2 is connected to the liquid outlet 513 of the heat exchanger 51, that is, the two-way valve 520a2 is connected between the liquid outlet 511a2 and the liquid outlet 513 of the heat exchanger 51.

[0141] The liquid outlet 513 of the heat exchanger 51 and the liquid outlet 511b1 of the liquid cooling device 50 are connected to a two-way valve 520b1, and the liquid outlet 513 of the heat exchanger 51 and the liquid outlet 511b2 of the liquid cooling device 50 are connected to a two-way valve 520b2. In other words, one valve port of the two-way valve 520b1 is connected to the liquid outlet 511b1, and the other valve port of the two-way valve 520b1 is connected to the liquid outlet 513 of the heat exchanger 51, that is, the two-way valve 520b1 is connected between the liquid outlet 511b1 and the liquid outlet 513 of the heat exchanger 51; one valve port of the two-way valve 520b2 is connected to the liquid outlet 511b2, and the other valve port of the two-way valve 520b2 is connected to the liquid outlet 513 of the heat exchanger 51, that is, the two-way valve 520b2 is connected between the liquid outlet 511b2 and the liquid outlet 513 of the heat exchanger 51.

[0142] From the above, it can be seen that the liquid cooling device 50 and the liquid cooling channel of each charging gun are individually controlled by a two-way valve. When the charging gun of a charging terminal is connected to an electric vehicle, the liquid cooling device 50 can control the two-way valve connected to the liquid cooling channel of the charging gun of the charging terminal to open the liquid cooling channel between the liquid cooling device and the charging gun. The control is simple and easy to implement.

[0143] For example, when the charging gun 420a of the charging terminal 42a is connected to the electric vehicle, that is, the charging gun 420a transmits electric energy to the electric vehicle, the liquid cooling device 50 controls the two-way valve 520a1 to open the liquid cooling channel between the liquid cooling device 50 and the charging gun 420a, so that the liquid cooling device 50 can transmit coolant to the liquid cooling channel of the charging gun 420a, and transmit the coolant that absorbs the heat of the charging terminal 42a through the liquid inlet 512a1 connected to the return liquid port 312a1 of the charging terminal 42a, and the coolant that absorbs the heat flows into the liquid cooling device 50. The coolant that absorbs the heat can be cooled inside the liquid cooling device 50, and the cooled coolant flows into the charging terminal 42a through the liquid outlet 511a1 of the liquid cooling device 50, thereby realizing the cooling of the charging gun 420a of the charging terminal 42a.

[0144] Moreover, the present application designs a two-way valve to connect each liquid outlet of the liquid cooling device 50 and the liquid outlet of the heat exchanger of the liquid cooling device 50, which can reduce costs. Moreover, compared with using a multi-way valve to connect the liquid outlet of the heat exchanger of the liquid cooling device 50 and each liquid outlet of the liquid cooling device, the solution of the present application can solve the problem of valve loosening or damage caused by repeated switching of different valve ports of the multi-way valve, which can further reduce costs.

[0145] In addition, a two-way valve is connected to the liquid outlet of the heat exchanger of the liquid cooling device 50 and each liquid outlet of the liquid cooling device 50. By controlling these two-way valves, the channel between the liquid cooling device and the charging terminal can be disconnected, which is conducive to the maintenance of the liquid cooling device, thereby improving the reliability of the liquid cooling device to deliver coolant to the charging terminal, thereby improving the reliability of the charging terminal to charge the electric vehicle with high power, thereby improving

[0146] It should be noted that, in one embodiment, Fig. 9 As shown, each charging terminal also includes a power distribution component and a heat exchanger. The power distribution component is connected between the charging gun and the charging module. The heat exchanger of the charging terminal includes a liquid cooling channel and a gas channel. The liquid cooling channel of the heat exchanger of the charging terminal is used for heat exchange with the gas channel.

[0147] Specifically, refer to Fig. 9 The charging terminal 42a also includes a power distribution component 440a and a heat exchanger 441a, and the liquid cooling channel of the heat exchanger 441a is used to dissipate heat for the gas in the power distribution component 440a. The liquid injection port 311a3 of the charging terminal 42a is also connected to the liquid inlet 441a1 of the liquid cooling channel of the heat exchanger 441a. The liquid return port 312a3 of the charging terminal 42a is also connected to the liquid outlet 441a2 of the liquid cooling channel of the heat exchanger 441a.

[0148] The charging terminal 42b also includes a power distribution component 440b and a heat exchanger 441b, and the liquid cooling channel of the heat exchanger 441b is used to dissipate heat for the gas in the power distribution component 440b. The liquid injection port 311b3 of the charging terminal 42b is also connected to the liquid inlet 441b1 of the liquid cooling channel of the heat exchanger 441b. The liquid return port 312b3 of the charging terminal 42b is also connected to the liquid outlet 441b2 of the liquid cooling channel of the heat exchanger 441b.

[0149] The specific functions of the power distribution components and heat exchangers of the charging terminal can be referred to above. Figure 4 For the sake of brevity, the relevant content will not be repeated here.

[0150] In addition, in the above Fig. 9In the embodiment, the liquid cooling device 50 further includes two two-way valves 520a3 and 520b3, wherein one valve port of the two-way valve 520a3 is connected to the liquid outlet 513 of the liquid cooling channel of the heat exchanger 51, and the other valve port of the two-way valve 520a3 is connected to the liquid outlet 511a3 of the liquid cooling device 50. One valve port of the two-way valve 520b3 is connected to the liquid outlet 513 of the liquid cooling channel of the heat exchanger 51, and the other valve port of the two-way valve 520b3 is connected to the liquid outlet 511b3 of the liquid cooling device 50.

[0151] The functions of the two two-way valves 520a3 and 520b3 are the same as those described above. Figure 6 The two-way valves 520a1, 520a2, 520b1, and 520b2 are similar. For details, please refer to the above Figure 6 For the sake of brevity, the relevant content will not be repeated here.

[0152] The following will introduce the content of the message sent by the charging device 40 to the liquid cooling device 50. The content of the message sent by the charging device 40 to the liquid cooling device 50 is related to the connection relationship between the two. Please see below for details.

[0153] In one embodiment, the connection relationship between the liquid cooling device 50 and the charging device 40 is as described above. Figures 3 to 6 In any of the embodiments, N is an integer greater than or equal to 2, and when multiple charging guns among the N charging guns are connected to electric vehicles, the charging terminal is used to send at least one of the following messages to the liquid cooling device: a message for requesting the liquid cooling device to output coolant, a message for indicating the total coolant flow required by the multiple charging guns, and a message for indicating the minimum temperature of the coolant required by the multiple charging guns.

[0154] Refer to the above Figure 5 Assuming that the charging guns 420a and 430a of the charging terminal 42a of the two charging terminals 42a and 42b are connected to the electric vehicle, the charging device can send a message to the liquid cooling device to request coolant for one charging terminal 42a, and the message includes at least one of the following: a message for requesting the liquid cooling device 50 to output coolant, a message for indicating the total coolant flow rate required by the charging guns 420a and 430a, and a message for indicating the minimum temperature of the coolant required by the charging guns 420a and 430a.

[0155] For example, when the flow rate of the coolant required by the charging gun 420a is F1 and the temperature is T1, the flow rate of the coolant required by the charging gun 430a is F2 and the temperature is T2, and T1 < T2, the message sent by the charging device 40 to the liquid cooling device 50 may include at least one of the following: a message for requesting the liquid cooling device 50 to output the coolant, a message for indicating the total flow rate (F1 + F2) of the coolant required by the charging guns 420a and 430a, and a message for indicating the temperature T1 of the coolant required by the charging guns 420a and 430a. Thus, the liquid cooling device 50 can deliver the coolant with a flow rate of (F1 + F2) and a temperature of T1 to the charging terminal 42a according to the received message, which is beneficial to meeting the heat dissipation requirements of the charging guns 420a and 430a, and further beneficial to ensuring the normal high-power charging of the charging terminal 42 to the electric vehicle, improving the user experience.

[0156] In the embodiment of the present application, the charging terminal 42 sends at least one of the above messages to the liquid cooling device 50, and the liquid cooling device 50 can deliver the coolant with corresponding parameters to the charging terminal 42 according to the content of the message, which is beneficial to meeting the heat dissipation requirements of each charging gun, and further beneficial to ensuring the normal high-power charging of the charging terminal 42 to the electric vehicle 60, improving the user experience.

[0157] Moreover, in the embodiment of the present application, the message sent by the charging terminal 42 to the liquid cooling device 50 includes a message for indicating the total flow rate of the coolant required by multiple charging guns. That is, the charging terminal 42 only needs to send a message of the total flow rate of the coolant to the liquid cooling device 50, which can reduce the complexity of the message and improve the transmission efficiency.

[0158] In addition, the message sent by the charging terminal 42 to the liquid cooling device 50 includes a message for indicating the lowest temperature of the coolant required by multiple charging guns. That is, the charging terminal 42 only needs to send a message of the lowest temperature of the coolant required by multiple charging guns to the liquid cooling device 50. In this way, the coolant output by the liquid cooling device to the charging terminal can meet the heat dissipation requirements of each charging gun, which can ensure the normal high-power charging of the charging terminal 42 to the electric vehicle 60, and further improve the user experience.

[0159] In one embodiment, the charging device 40 is further configured to: control the valve opening of the two-way valve corresponding to the liquid cooling channel of each charging gun among multiple charging guns, so that the flow rate of the coolant flowing into the liquid cooling channel of each charging gun meets the flow rate requirement of each charging gun.

[0160] In the embodiment of the present application, continue to refer to Figure 5, as described above, the liquid cooling device 50 delivers the coolant with a flow rate of (F1 + F2) and a temperature of T1 to the charging terminal 42a. For the charging device 40, the charging device 40 receives the coolant with a flow rate of (F1 + F2). In this case, the charging device 40 can control the valve opening degrees of the two-way valves 450a1 and 450a2 to make the flow rate of the coolant in the liquid cooling channel of the charging gun 420a reach F1 and the flow rate of the coolant in the liquid cooling channel of the charging gun 430a reach F2, so as to meet the heat dissipation requirements of the charging guns 420a and 430a, and further ensure the normal high-power charging of the charging terminal 42a to the electric vehicle, improving the user experience.

[0161] It should be understood that in some possible implementation manners, when the connection relationship between the liquid cooling device 50 and the charging device 40 is as described in any of the above Figures 3 to 6 embodiments, the message sent by the charging device 40 to the liquid cooling device 50 may also include at least one of the following: a message for requesting the liquid cooling device 50 to output the coolant, a message for indicating the coolant flow rate required for each charging gun among a plurality of charging guns, and a message for indicating the temperature of the coolant required for each charging gun among the plurality of charging guns.

[0162] For example, referring to the above Figure 5 , when the required coolant flow rate of the charging gun 420a is F1 and the temperature is T1, the required coolant flow rate of the charging gun 430a is F2 and the temperature is T2, and T1 < T2, the message sent by the charging device 40 to the liquid cooling device 50 may include at least one of the following: a message for requesting the liquid cooling device 50 to output the coolant, a message for indicating the required coolant flow rate F1 of the charging gun 420a and the required coolant flow rate F2 of the charging gun 430a, and a message for indicating the required coolant temperature T1 of the charging gun 420a and the required coolant temperature T2 of the charging gun 430a. Thus, the liquid cooling device 50 can deliver the coolant with a flow rate of (F1 + F2) and a temperature of T1 to the charging terminal 42a according to the received message. When the liquid cooling device 50 receives this message, it can deliver the coolant with a flow rate of (F1 + F2) and a temperature of T1 to the charging device 40. The charging device 40 can control the valve opening degrees of the two-way valves 450a1 and 450a2 to make the flow rate of the coolant in the liquid cooling channel of the charging gun 420a reach F1 and the flow rate of the coolant in the liquid cooling channel of the charging gun 430a reach F2, so as to meet the heat dissipation requirements of the charging guns 420a and 430a, and further ensure the normal high-power charging of the charging terminal 42a to the electric vehicle, improving the user experience.

[0163] In one embodiment, when the connection relationship between the liquid cooling device 50 and the charging device 40 is as described in the above Figures 7 to 9In any of the embodiments, N is an integer greater than or equal to 2. When multiple charging guns among the N charging guns are connected to an electric vehicle, the charging terminal 42 is configured to send at least one of the following messages to the liquid cooling device 50: a message for requesting the liquid cooling device 50 to output coolant, a message for indicating the coolant flow rate required for each charging gun among the multiple charging guns, and a message for indicating the minimum temperature of the coolant required by the multiple charging guns.

[0164] Referring to the above Figure 8 , assuming that among the two charging terminals 42a and 42b, the charging guns 420a and 430a of the charging terminal 42a are connected to an electric vehicle, the charging device may send a message to the liquid cooling device to request coolant for one charging terminal 42a. The message includes at least one of the following: a message for requesting the liquid cooling device 50 to output coolant, a message for indicating the coolant flow rate required for each of the charging guns 420a and 430a, and a message for indicating the minimum temperature of the coolant required by the charging guns 420a and 430a.

[0165] For example, when the coolant flow rate required by the charging gun 420a is F1 and the temperature is T1, the coolant flow rate required by the charging gun 430a is F2 and the temperature is T2, and T1 < T2, the message sent by the charging device 40 to the liquid cooling device 50 may include at least one of the following: a message for requesting the liquid cooling device 50 to output coolant, a message for indicating the coolant flow rate F1 required by the charging gun 420a and the coolant flow rate F2 required by the charging gun 430a, and a message for indicating the temperature T1 of the coolant required by the charging guns 420a and 430a. Thus, the liquid cooling device 50 can deliver coolant with a flow rate of F1 and a temperature of T1 to the charging gun 420a, and deliver coolant with a flow rate of F2 and a temperature of T1 to the charging gun 430a, thereby meeting the heat dissipation requirements of the charging guns 420a and 430a, and further ensuring the normal high-power charging of the charging terminal 42a to the electric vehicle and improving the user experience.

[0166] It should be understood that in some possible implementation manners, when the connection relationship between the liquid cooling device 50 and the charging device 40 is any of the above Figures 7 to 9 embodiments, the charging terminal 42 is configured to send at least one of the following messages to the liquid cooling device 50: a message for requesting the liquid cooling device 50 to output coolant, a message for indicating the coolant flow rate required for each charging gun among the multiple charging guns, and a message for indicating the coolant temperature required for each charging gun among the multiple charging guns.

[0167] For example, when the flow rate of the coolant required by the charging gun 420a is F1 and the temperature is T1, the flow rate of the coolant required by the charging gun 430a is F2 and the temperature is T2, and T1 < T2, the message sent by the charging device 40 to the liquid cooling device 50 may include at least one of the following: a message for requesting the liquid cooling device 50 to output the coolant, a message for indicating the flow rates F1 of the coolant required by the charging gun 420a and F2 of the coolant required by the charging gun 430a, and a message for indicating the temperature T1 of the coolant required by the charging gun 420a and the temperature T2 of the coolant required by the charging gun 430a. Thus, the liquid cooling device 50 can deliver the coolant with a flow rate of F1 and a temperature of T1 to the charging gun 420a and the coolant with a flow rate of F2 and a temperature of T1 to the charging gun 430a according to the received message. Alternatively, the liquid cooling device 50 can deliver the coolant with a flow rate of F1 and a temperature of T1 to the charging gun 420a and the coolant with a flow rate of F2 and a temperature of T2 to the charging gun 430a according to the received message, so as to meet the heat dissipation requirements of the charging guns 420a and 430a, and further ensure the normal high-power charging of the charging terminal 42a to the electric vehicle, improving the user experience.

[0168] In the embodiment of the present application, the charging terminal 42 sends at least one of the above messages to the liquid cooling device 50, and the liquid cooling device 50 can deliver the coolant with corresponding parameters to the charging terminal 42 according to the content of the message, which is beneficial to meeting the heat dissipation requirements of each charging gun, and further beneficial to ensuring the normal high-power charging of the charging terminal 42 to the electric vehicle 60, improving the user experience.

[0169] Moreover, in the embodiment of the present application, the message sent by the charging terminal 42 to the liquid cooling device 50 includes a message for indicating the flow rate of the coolant required by each charging gun among multiple charging guns, that is, the charging terminal 42 sends the message of the flow rate of the coolant required by each charging gun to the liquid cooling device 50. In this way, the liquid cooling device 50 can deliver the coolant with the corresponding flow rate according to the coolant required by each charging gun, and the implementation is simple.

[0170] In addition, the message sent by the charging terminal 42 to the liquid cooling device 50 includes a message for indicating the lowest temperature of the coolant required by multiple charging guns, that is, the charging terminal 42 only needs to send the message of the lowest temperature of the coolant required by multiple charging guns to the liquid cooling device 50. In this way, the temperature of the coolant output by the liquid cooling device to the charging terminal can meet the heat dissipation requirements of each charging gun, ensuring the normal high-power charging of the charging terminal 42 to the electric vehicle 60, and further improving the user experience.

[0171] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A charging pile, characterized in that: The charging pile includes a liquid cooling device and a charging device, the liquid cooling device includes a heat exchanger, the liquid inlet and the liquid outlet of the heat exchanger are connected to the liquid cooling channel of the component to be cooled in the charging device to form a liquid supply circuit, the liquid cooling device also includes a liquid cooling joint, the liquid cooling joint is used to connect to the liquid cooling interface of the electric vehicle, and the liquid cooling device is used to output the coolant to the electric vehicle through the liquid cooling joint; The charging device is used for: When a message indicating that the liquid cooling device has delivered cooling liquid to the electric vehicle is received, electric energy is delivered to the electric vehicle.

2. The charging pile according to claim 1, characterized in that: The charging device is used for: In the case where the liquid cooling device delivers coolant to the charging device, when the pressure of the liquid cooling channel is less than a first preset required pressure, or the flow rate of the liquid cooling channel is less than a first preset required flow rate, reducing the power delivered to the electric vehicle and sending a message to the liquid cooling device for instructing to stop delivering coolant; The first preset required pressure is the pressure of the liquid cooling channel when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the charging device at the flow rate of coolant required by the charging device; The first preset required flow rate is the flow rate corresponding to the liquid cooling channel when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the charging device at the flow rate of coolant required by the charging device.

3. The charging pile according to claim 1 or 2, characterized in that: The charging device is used for: When the liquid cooling device delivers coolant to the electric vehicle, if the pressure of the liquid cooling channel between the liquid cooling device and the electric vehicle is less than a second preset required pressure, or the flow rate of the liquid cooling channel between the liquid cooling device and the electric vehicle is less than a second preset required flow rate, stop delivering electric energy to the electric vehicle; The second preset required pressure is the pressure corresponding to the liquid cooling channel between the liquid cooling device and the electric vehicle when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the electric vehicle at the flow rate of coolant required by the electric vehicle; The second preset required flow rate is the flow rate corresponding to the liquid cooling channel between the liquid cooling device and the electric vehicle when the charging device charges the electric vehicle at the required power of the electric vehicle and the liquid cooling device delivers coolant to the electric vehicle at the flow rate of coolant required by the electric vehicle.

4. The charging pile according to any one of claims 1 to 3, characterized in that: When the charging device is connected to the electric vehicle, the charging device is further used for: receiving a message for requesting the liquid cooling device to output cooling liquid for the electric vehicle; A message for requesting the liquid cooling device to output cooling liquid for the electric vehicle and a message for requesting the liquid cooling device to output cooling liquid for the charging device are sent to the liquid cooling device.

5. The charging pile according to any one of claims 1 to 4, characterized in that: The liquid cooling device includes M liquid inlets and M liquid outlets, the charging device includes M charging terminals, the components to be cooled of each charging terminal include N charging guns, and M and N are both integers greater than or equal to 1; The M liquid outlets are connected to the liquid injection ports of the M charging terminals in a one-to-one correspondence, and the M liquid inlets are connected to the liquid return ports of the M charging terminals in a one-to-one correspondence; The liquid filling port of the charging terminal is connected to the liquid inlet of the liquid cooling channel of each of the N charging guns; The liquid return port of the charging terminal is connected to the liquid outlet of the liquid cooling channel of each of the N charging guns.

6. The charging pile according to claim 5, characterized in that: Each of the charging terminals comprises N two-way valves, and the N two-way valves are connected to the liquid cooling channels of the N charging guns in a one-to-one correspondence; One valve port of each of the N two-way valves is connected to the liquid inlet of the corresponding liquid cooling channel, and another valve port of each of the N two-way valves is connected to the liquid injection port of the corresponding charging terminal.

7. The charging pile according to any one of claims 1 to 4, characterized in that: The liquid cooling device includes M groups of liquid inlets and M groups of liquid outlets, each group of the liquid inlets includes N liquid inlets, and each group of the liquid outlets includes N liquid outlets, the charging device includes M charging terminals, and the components to be cooled of each charging terminal include N charging guns, and M and N are both integers greater than or equal to 1; The M groups of liquid outlets are connected to the M charging terminals in a one-to-one correspondence, the M groups of liquid inlets are connected to the M charging terminals in a one-to-one correspondence, the N liquid outlets of each group of liquid outlets are connected to the N liquid injection ports of a charging terminal in a one-to-one correspondence, and the N liquid inlets of each group of liquid inlets are connected to the N liquid return ports of a charging terminal; The N liquid filling ports are connected one-to-one with the liquid inlets of the liquid cooling channels of the corresponding N charging guns, and the N liquid return ports are connected one-to-one with the liquid outlets of the liquid cooling channels of the corresponding N charging guns.

8. The charging pile according to any one of claims 5 to 7, characterized in that: The liquid outlet of the heat exchanger and each of the liquid outlets of the liquid cooling device are connected to a two-way valve.

9. The charging pile according to claim 5 or 6, characterized in that: N is an integer greater than or equal to 2. When multiple charging guns among the N charging guns are connected to electric vehicles, the charging terminal is used to send at least one of the following messages to the liquid cooling device: A message for requesting the liquid cooling device to output coolant, a message for indicating the total coolant flow required by the multiple charging guns, and a message for indicating the minimum temperature of the coolant required by the multiple charging guns.

10. The charging pile according to claim 9, characterized in that: The charging device is also used for: The valve opening of the two-way valve corresponding to the liquid cooling channel of each charging gun among the multiple charging guns is controlled so that the flow rate of the coolant flowing into the liquid cooling channel of each charging gun meets the flow rate requirement of each charging gun.

11. The charging pile according to claim 7, characterized in that: N is an integer greater than or equal to 2. When multiple charging guns among the N charging guns are connected to electric vehicles, the charging terminal is used to send at least one of the following messages to the liquid cooling device: A message for requesting the liquid cooling device to output coolant, a message for indicating the coolant flow rate required by each of the multiple charging guns, and a message for indicating the minimum temperature of the coolant required by the multiple charging guns.

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