Charging station purge system and vehicle

Abstract

The application provides a charging seat purging system and a vehicle, the charging seat purging system comprising a charging main body and a gas storage part, the charging main body defining a charging bin for accommodating a plug of a charging gun, a plurality of power connection parts being arranged in the charging bin, a first power connection terminal being arranged in each power connection part, a purging opening being arranged on the power connection part, the gas storage part being used for storing purging gas, the gas storage part being connected with the purging openings of the plurality of power connection parts respectively, and the purging gas being discharged into the power connection part through the purging opening to purge the first power connection terminal. The charging seat purging system provided by the application purges the first power connection terminal in the power connection part by using the purging gas, guarantees that the first power connection terminal is in a clean state, enables the first power connection terminal and a second power connection terminal on the plug of the charging gun to be tightly and stably electrically connected, avoids dangerous situations such as arc drawing during charging, and improves charging safety.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, and in particular relates to a charging dock purging system and a vehicle. Background Technology

[0002] With the increasing prevalence of intelligent and electric vehicles, pure electric trucks are accounting for a growing proportion of the commercial vehicle sector. All electric trucks powered by batteries are equipped with charging docks to connect to charging stations and recharge their batteries.

[0003] Because the charging conditions for commercial vehicles are much harsher than those for passenger vehicles, many charging scenarios are filled with dust, coal dust, and other substances in the air, and commercial vehicle charging sockets are used more frequently. Under these harsh conditions, dust and sometimes coal dust and gravel easily accumulate inside the charging sockets of commercial vehicles. When the charging gun and socket are connected to recharge new energy vehicles, arcing can easily occur, causing the inner wall of the charging socket to burn and become unusable. This results in a double waste of time and cost, seriously affecting the customer experience. Utility Model Content

[0004] This application provides a charging dock purging system and a vehicle. The charging dock purging system uses purging gas to purge the first electrical terminal inside the electrical part, ensuring that the first electrical terminal is in a clean state, so that the first electrical terminal can be tightly and stably electrically connected to the second electrical terminal on the charging gun plug, avoiding dangerous situations such as arcing during charging and improving charging safety.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a charging dock purging system, comprising: a charging body defining a charging compartment for accommodating a charging gun plug, the charging compartment having at least two electrical connection parts, each electrical connection part having a first electrical terminal for electrical connection to a second electrical terminal on the plug, and the electrical connection part having a purging port; and a gas storage part for storing purging gas, the gas storage part being connected to the purging ports of the plurality of electrical connection parts respectively, for discharging the purging gas into the interior of the electrical connection parts through the purging ports to purify the first electrical terminal.

[0007] As an optional implementation, the power receiving part is columnar, with its first end connected to the inner bottom wall of the charging compartment, and the interior of the power receiving part having a plug-in cavity open toward the second end of the power receiving part; the purge port is disposed on the inner bottom wall of the plug-in cavity.

[0008] As an optional implementation, the charging body is provided with multiple air intake channels, and each of the multiple air intake channels is connected to a purge port of the power receiving part; the gas storage part is connected to each of the multiple air intake channels.

[0009] As an optional implementation, there are two electrical connection parts; and the first electrical connection terminals in the two electrical connection parts serve as the positive terminal and the negative terminal of the DC power supply, respectively.

[0010] As an optional implementation, the charging dock purging system further includes: a control valve having an inlet and multiple outlets, the inlet being connected to a gas storage unit, and the multiple outlets being connected one-to-one with the purging ports of multiple electrical connections; the control valve being used to control the flow of purging gas by controlling the opening and closing of the inlet and the multiple outlets; and a control element electrically connected to the control valve for controlling the flow between the inlet and the multiple outlets.

[0011] As an alternative implementation, there are two charging compartments arranged side by side.

[0012] As an optional implementation, the charging dock purging system further includes a gas supply unit for generating purging gas, the gas supply unit being connected to a gas storage unit to discharge the purging gas into the gas storage unit.

[0013] As an optional implementation, the gas supply unit further includes: an air compressor for generating compressed air; and a gas processing unit connected to the air compressor for processing the compressed air to obtain purge gas.

[0014] As an optional implementation, the gas processing unit is a dryer for drying the compressed air. The gas processing unit is also a filter for filtering the compressed air.

[0015] Secondly, this application provides a vehicle including a charging dock purging system according to any of the above claims.

[0016] The charging dock purging system of this application includes a first electrical terminal inside the electrical connection section, a purging port on the electrical connection section, and a gas storage section for storing purging gas. The gas storage section is connected to the purging ports of multiple electrical connections, allowing the purging gas to be discharged into the interior of the electrical connection section through the purging ports to purge the first electrical terminal. This method uses purging gas to quickly remove impurities from the first electrical terminal, ensuring it is clean and enabling a tight and stable electrical connection between the first electrical terminal and the second electrical terminal on the charging gun plug. This avoids dangerous situations such as arcing during charging and improves charging safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic block diagram of the charging dock purging system provided in the embodiments of this application;

[0019] Figure 2 A schematic diagram of the connection relationship between the charging body and the control valve in the charging dock purging system provided in this application embodiment. Figure 1 ;

[0020] Figure 3 A schematic diagram of the connection relationship between the charging body and the control valve in the charging dock purging system provided in this application embodiment. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the charging body in the charging dock purging system provided in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Charging main body; 110. Charging compartment; 120. Power connection part; 122. First power connection terminal; 124. Purge port; 126. Insertion cavity; 130. Air inlet channel; 200. Gas storage part; 300. Control valve; 310. Switch; 400. Gas supply part; 410. Air compressor; 420. Gas processing unit. Detailed Implementation

[0024] In existing technologies, the charging sockets of commercial vehicles are prone to accumulating dust and grime, and sometimes coal dust, sand and gravel can also accumulate inside. When the charging gun and socket are connected to recharge new energy vehicles, arcing is very likely to occur, causing the inner wall of the charging socket to burn and become unusable. This results in a double waste of time and cost, and seriously affects the customer experience.

[0025] To overcome the shortcomings of existing technologies, this application provides a charging dock purging system. A first electrical terminal is disposed within the electrical contact section, and a purging port is provided on the electrical contact section. A gas storage section stores purging gas and is connected to the purging ports of multiple electrical contact sections. The purging gas is discharged into the interior of the electrical contact section through the purging ports to purge the first electrical terminal. This method utilizes purging gas to quickly remove impurities from the first electrical terminal, ensuring it remains clean. This allows for a tight and stable electrical connection between the first electrical terminal and the second electrical terminal on the charging gun plug, preventing dangerous situations such as arcing during charging and improving charging safety.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] This application provides a vehicle that can be a passenger car or a commercial vehicle (such as a bus, truck, or semi-trailer tractor). Furthermore, the vehicle may also include a power battery, which serves as at least a partial drive mechanism to propel the vehicle.

[0028] See Figures 1 to 4 In some embodiments, the vehicle may further include a charging dock purging system, which includes a charging body 100 and an air storage section 200. The charging body 100 defines a charging compartment 110 for accommodating the plug of a charging gun. At least two electrical connection sections 120 are provided within the charging compartment 110, each with a first electrical terminal 122 for electrical connection to a second electrical terminal on the plug. A purging port 124 is provided on the electrical connection section 120. The air storage section 200 stores purging gas and is connected to the purging ports 124 of the multiple electrical connection sections 120, allowing the purging gas to be discharged into the interior of the electrical connection section 120 through the purging ports 124 to purge the first electrical terminal 122.

[0029] In this embodiment, the charging body 100 can be installed on a vehicle to connect to a charging gun for charging the vehicle's power battery.

[0030] Specifically, the charging body 100 defines two charging compartments 110, which are arranged side by side. The two charging compartments 110 are a DC charging compartment 110 (fast charging compartment) and an AC charging compartment 110 (slow charging compartment). The charging compartment 110 is generally concave in shape. During charging, the plug of the charging gun can be inserted into the charging compartment 110, and the peripheral wall of the charging compartment 110 limits the plug of the charging gun.

[0031] See Figure 4 Each charging compartment 110 may be provided with at least two power receiving parts 120. Each power receiving part 120 is provided with a first power receiving terminal 122. When the plug of the charging gun is inserted into the charging compartment 110, the second power receiving terminal on the plug is electrically connected to the first power receiving terminal 122 in the power receiving part 120, thus realizing the charging connection.

[0032] In some exemplary embodiments, one of the charging compartments 110 has two power receiving parts 120, and the first power receiving terminals 122 in the two power receiving parts 120 serve as the positive terminal (DC+) and the negative terminal (DC-) of the DC power supply, respectively. In addition, the charging compartment 110 may also be provided with a grounding terminal, a low-voltage auxiliary power supply positive terminal, a low-voltage auxiliary power supply negative terminal, a CAN-H terminal for charging communication, a CAN-L terminal for charging communication, a charging connection confirmation terminal 1, and a charging connection confirmation terminal 2.

[0033] In this embodiment, the power receiving part 120 is provided with a purge port 124, and the gas storage part 200 is connected to the purge ports 124 of the multiple power receiving parts 120 respectively, so as to discharge the purge gas into the interior of the power receiving part 120 through the purge port 124 to purge the first power receiving terminal 122.

[0034] During long-term use of the charging dock, dust, debris, and other impurities easily accumulate on the power connection terminals. By directly opening the blow port 124 on the power connection part 120, the blow gas from the air storage part 200 can reach the surface of the first power connection terminal 122 directly through the blow port 124, achieving precise cleaning.

[0035] The purging gas acts on the first electrical terminal 122 with a more direct path and a higher flow rate, quickly removing impurities and greatly improving cleaning efficiency. This ensures that the first electrical terminal 122 is in a clean state, allowing the first electrical terminal 122 to be tightly and stably electrically connected to the second electrical terminal on the charging gun plug, avoiding dangerous situations such as arcing during charging and improving charging safety.

[0036] Furthermore, continuous accumulation of impurities and unstable charging connections accelerate the wear and aging of the first power terminal 122, shortening the lifespan of the charging base. This embodiment reduces the erosion and physical damage to the first power terminal 122 caused by impurities through regular blowing and cleaning, thus slowing down the aging rate of the terminal. At the same time, a stable charging connection reduces the heat generated by abnormal current, further protecting the power terminal and other internal components of the charging base, thereby extending the overall lifespan of the charging base and reducing equipment maintenance and replacement costs.

[0037] See Figure 4 Furthermore, the power receiving part 120 is columnar, with its first end connected to the inner bottom wall of the charging compartment 110, and the interior of the power receiving part 120 having a plug-in cavity 126 that opens toward the second end of the power receiving part 120. A purge port 124 is disposed on the inner bottom wall of the plug-in cavity 126.

[0038] The first end of the power receiving part 120 is connected to the inner bottom wall of the charging compartment 110. The interior of the power receiving part 120 has a plug-in cavity 126 that opens towards the second end, and a first power receiving terminal 122 is disposed in the plug-in cavity 126. Correspondingly, the plug of the charging gun has a second power receiving terminal, which can be inserted into the plug-in cavity 126 from the opening and then electrically connected with the first power receiving terminal 122 in the plug-in cavity 126.

[0039] In this embodiment, the purge port 124 is disposed on the inner bottom wall of the insertion cavity 126, that is, the purge port 124 faces the opening of the insertion cavity 126. After the purge gas is ejected from the purge port 124 at the bottom, it will pass through the entire peripheral wall of the insertion cavity 126 along the axial direction to thoroughly purge the insertion cavity 126, so that the purge gas can cover all areas of the surface of the first electrical terminal 122, avoiding cleaning dead corners and effectively removing dust and contaminants from the surface of the first electrical terminal 122.

[0040] Furthermore, since the purge port 124 faces the opening of the insertion cavity 126, the impurities blown out can be discharged from the insertion cavity 126 through the opening of the insertion cavity 126 and then discharged into the external environment, so that the impurities are removed from the insertion cavity 126.

[0041] In some exemplary embodiments, the contact part 120 is cylindrical, the insertion cavity 126 is cylindrical, and the purge port 124 is disposed at the center of the inner bottom wall of the insertion cavity 126. The ratio of the diameter of the purge port 124 to the inner diameter of the insertion cavity 126 is set between 1:5 and 1:10, which can ensure that the airflow maintains an appropriate speed when it reaches the terminal surface, so as to ensure sufficient impact force to remove stubborn impurities, while avoiding turbulence and energy loss caused by excessive flow velocity.

[0042] See Figures 1 to 4 In some embodiments, the charging body 100 is provided with multiple air intake channels 130, and each air intake channel is connected to a corresponding purge port 124. The gas storage unit 200 is connected to each of the multiple air intake channels.

[0043] In this embodiment, the charging body 100 defines a charging chamber 110, a power receiving part 120 is disposed inside the charging chamber 110, and a purge port 124 is disposed on the power receiving part 120. An air intake channel 130 is provided on the charging body 100. The inlet of the air intake channel 130 can be disposed on the outer surface of the charging body 100, and the air intake channel 130 extends from the outer surface of the charging body 100 to the interior. The outlet of the air intake channel 130 can serve as the purge port 124, or the outlet of the air intake channel 130 can be connected to the purge port 124 via a pipeline.

[0044] The gas storage unit 200 can be connected to the inlet of multiple air inlet channels 130 through multiple connecting pipes. The outlet of the multiple air inlet channels 130 can be used as a purge port 124 or connected to the purge port 124. In this way, the purge gas in the gas storage unit 200 can enter the plug-in cavity 126 through the multiple air inlet channels 130 to purge the first electrical terminal 122.

[0045] Since there can be multiple electrical contact sections 120, the charging main body 100 also has multiple air intake channels 130. These multiple air intake channels 130 respectively connect the electrical contact section 120 to the air storage section 200. This allows the purge gas from the air storage section 200 to be precisely delivered to each electrical contact section 120. Different electrical contact sections 120 may be contaminated with impurities to varying degrees during charging; this one-to-one correspondence design ensures that each electrical contact section 120 receives targeted cleaning.

[0046] Furthermore, since the air intake channels and purge ports 124 correspond one-to-one, when a certain electrical contact 120 experiences poor cleaning performance, maintenance personnel can quickly locate the corresponding air intake channel to check for blockages, leaks, or other problems, significantly improving maintenance efficiency. Moreover, the independent channel design ensures that repairing a faulty channel will not affect the normal cleaning operation of other electrical contact 120s, minimizing the impact of the fault on the entire charging dock cleaning system and guaranteeing that the charging dock can maintain basic cleaning functions and charging performance even when some channels malfunction.

[0047] See Figures 1 to 3 In some embodiments, the charging dock purging system may further include a control valve 300, which has an inlet and multiple outlets. The inlet is connected to the gas storage section 200, and the multiple outlets are connected one-to-one with the purging ports 124 of the multiple power connection sections 120. The control valve 300 is used to control the flow of purging gas by controlling the opening and closing of the inlet and the multiple outlets.

[0048] In some exemplary embodiments, the charging compartment 110 is provided with at least two power receiving parts 120, each power receiving part 120 having a purge port 124. The charging body 100 has two air intake channels 130, and the outlets 130 of the two air intake channels are respectively connected to the two purge ports 124. The control valve 300 may include a valve body, which has one inlet and two outlets. The inlet of the valve body is connected to the air storage part 200 through a connecting pipe, and the two outlets of the valve body are connected to the inlets of the two air intake channels 130 through two connecting pipes. A valve core is provided in the valve body. The valve core can connect or block the inlet of the valve body from any one of the outlets of the valve body by movement. That is, the inlet of the valve body can be connected to or blocked from both outlets of the valve body at the same time, or the inlet of the valve body can be connected to one outlet of the valve body and blocked from the other outlet. In this way, the operator can control the control valve 300 to stop the purge of all first power receiving terminals 122, or to purge all first power receiving terminals 122 at the same time, or to purge only one of the first power receiving terminals 122.

[0049] Furthermore, the control valve 300 can also be configured as a solenoid valve. The solenoid valve operates based on the principle of electromagnetic induction; the electromagnetic coil generates a magnetic field the instant it is energized, driving the valve core to move rapidly, thus switching the airflow on and off. Its response time is typically as low as tens of milliseconds. In the charging dock purging system, this allows the purging gas to quickly reach the contact part 120 and clean the first contact terminal 122. For example, when dust accumulation on the charging dock is detected and cleaning is needed, the solenoid valve can open in a very short time, greatly improving cleaning efficiency and ensuring that the charging dock can quickly return to a clean state when needed, guaranteeing timely charging connection.

[0050] Furthermore, the solenoid valve can also be configured as a single-unit solenoid valve with a single-inlet and double-outlet structure design, which enables the single-unit solenoid valve to stably and evenly distribute the purge gas input from the gas storage section 200 to two independent gas paths, which are respectively connected to two electrical connection sections 120.

[0051] Furthermore, the charging dock purging system may also include a control element 310, which is electrically connected to a control valve 300 for controlling the on / off state between the inlet and multiple outlets.

[0052] Switch 310 is electrically connected to control valve 300. Operators can easily control the flow of purging gas between the inlet and multiple outlets of control valve 300 by simply operating switch 310. Whether for routine cleaning and maintenance or immediate cleaning of obvious impurities at the charging terminal, users can quickly turn on switch 310 to initiate the purging process. For example, before charging the vehicle, the driver can activate switch 310 to purge the charging terminal, ensuring a reliable charging connection. After cleaning, turning off switch 310 stops the gas supply. The operation is simple and intuitive, improving the convenience and flexibility of cleaning operations.

[0053] In some exemplary embodiments, the control unit 310 and the control valve 300 are electrically connected to the vehicle's microcontroller unit (MCU). The control unit 310 may be installed on the vehicle to receive purging commands from the operator and transmit the purging commands to the vehicle's MCU. The vehicle's MCU controls the control valve 300 to implement various purging functions.

[0054] In some exemplary embodiments, the control unit 310 and the control valve 300 are electrically connected to a separate controller (e.g., a programmable logic controller, PLC). The control unit 310 is used to receive the purging command from the operator and transmit the purging command to the controller. The controller implements each purging function by controlling the control valve 300.

[0055] In some specific embodiments, the control element 310 may also be a physical switch or may be integrated into the vehicle's control panel.

[0056] In some embodiments, the charging dock purging system may further include a gas supply unit 400 for generating purging gas. The gas supply unit 400 is connected to a gas storage unit 200 to discharge the purging gas into the gas storage unit 200.

[0057] In this embodiment, the gas supply unit 400 continuously generates purging gas and discharges it into the gas storage unit 200, ensuring that the gas storage unit 200 always maintains a certain gas reserve. This ensures a sufficient gas supply during the purging and cleaning of the charging dock, preventing the cleaning process from being forced to stop due to gas supply interruption and affecting the cleaning effect. For example, when cleaning and maintaining multiple charging docks sequentially, the gas stored in the gas storage unit 200 can ensure that the cleaning work can be carried out without interruption, greatly improving cleaning efficiency and continuity.

[0058] The gas storage unit 200 serves as an intermediate storage link, buffering and stabilizing the gas generated by the gas supply unit 400. The gas pressure generated by the gas supply unit 400 may fluctuate; by adjusting the gas storage unit 200, the gas pressure output to the purge port 124 of the electrical connection unit 120 can be kept stable. This ensures that the purge gas acts on the first electrical connection terminal 122 with a stable flow rate and impact force, effectively removing impurities and preventing incomplete cleaning of certain areas due to pressure fluctuations.

[0059] Furthermore, since the gas storage unit 200 stores a certain amount of purge gas, the gas supply unit 400 does not need to operate continuously to meet immediate cleaning needs. When the gas level in the gas storage unit 200 falls below a set threshold, the gas supply unit 400 is activated to replenish the gas in the gas storage unit 200.

[0060] Furthermore, the gas supply unit 400 may also include an air compressor 410 and a gas processing unit 420. The air compressor 410 is used to generate compressed air, and the gas processing unit 420 is connected to the air compressor 410 to generate and process the compressed air to obtain purge gas.

[0061] The air compressor 410 is able to draw in air and then compress the air to produce compressed air with a certain pressure (e.g., 0.2MPa-0.5MPa).

[0062] Furthermore, since commercial vehicles are typically equipped with high-power electric compressors to meet the needs of systems such as braking and air suspension, this embodiment can also be used together with the vehicle's existing electric compressor as the gas supply for the charging dock purging system, eliminating the need to purchase separate gas generating equipment, saving installation space, and significantly reducing hardware costs.

[0063] The gas processing unit 420 is connected to the air compressor 410 and can dehumidify and filter the air generated by the air compressor 410. This avoids increasing the humidity of the first electrical terminal 122 during the purging process, which would affect charging safety, and also prevents impurities in the compressed air from secondary contaminating the first electrical terminal 122.

[0064] In some specific embodiments, the gas processing unit 420 may also include a filter that can effectively remove dust, oil and other impurities from the compressed air to obtain cleaner purging gas and improve the safety of the first electrical terminal 122 after purging.

[0065] In some specific embodiments, the gas processing unit 420 may also include a dryer (such as a refrigerated dryer or an adsorption dryer) to dry the compressed air, reduce the humidity of the compressed air, obtain a purge gas with higher dryness, and improve the safety of the first electrical terminal 122 after purging.

[0066] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0067] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0068] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0069] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A charging dock cleaning system, characterized in that, include: A charging body defines a charging compartment for accommodating the plug of a charging gun. The charging compartment has at least two electrical connection parts, each of which has a first electrical terminal for electrical connection with a second electrical terminal on the plug. A purge port is provided on the electrical connection part. The gas storage section is used to store purge gas. The gas storage section is connected to the purge ports of the plurality of electrical terminals respectively, and is used to discharge the purge gas into the interior of the electrical terminals through the purge ports to purge the first electrical terminals.

2. The charging dock cleaning system according to claim 1, characterized in that, The power receiving part is columnar, and the first end of the power receiving part is connected to the inner bottom wall of the charging compartment. The interior of the power receiving part has a plug-in cavity that opens toward the second end of the power receiving part. The purge port is located on the inner bottom wall of the insertion cavity.

3. The charging dock cleaning system according to claim 1, characterized in that, The charging body is provided with multiple air intake channels, and each of the multiple air intake channels is connected to a purge port of the multiple electrical connection parts in a one-to-one correspondence. The gas storage unit is connected to the plurality of air intake channels respectively.

4. The charging dock cleaning system according to claim 1, characterized in that, There are two electrical contacts; and... The first terminals in the two electrical connection parts serve as the positive terminal and the negative terminal of the DC power supply, respectively.

5. The charging dock purging system according to any one of claims 1 to 4, characterized in that, Also includes: A control valve having an inlet and multiple outlets, the inlet being connected to the gas storage section, and the multiple outlets being connected one-to-one with the purge ports of the multiple electrical connections, the control valve being used to control the flow of the purge gas by controlling the opening and closing of the inlet and the multiple outlets; A control element, electrically connected to the control valve, is used to control the on / off connection between the inlet and the plurality of outlets.

6. The charging dock purging system according to any one of claims 1 to 4, characterized in that, There are two charging compartments, which are arranged side by side.

7. The charging dock purging system according to any one of claims 1 to 4, characterized in that, Also includes: A gas supply unit is provided for generating the purge gas. The gas supply unit is connected to the gas storage unit to discharge the purge gas into the gas storage unit.

8. The charging dock cleaning system according to claim 7, characterized in that, The gas supply unit also includes: An air compressor is used to produce compressed air. A gas processing unit, connected to the air compressor, is used to process the compressed air to obtain the purge gas.

9. The charging dock purging system according to claim 8, characterized in that, The gas processing unit is a dryer for drying the compressed air; and / or, The gas processing unit is a filter used to filter the compressed air.

10. A vehicle, characterized in that, Includes the charging dock cleaning system according to any one of claims 1 to 9.

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