Charging device

Abstract

The embodiment of the utility model provides charging equipment, and relates to the technical field of electric vehicle charging. The charging equipment comprises an equipment cabinet, a first cabinet door, a display screen, a first switching device, a charging connector and a first cable, wherein the equipment cabinet comprises a first side wall and a second side wall; the first cabinet door is located between the first side wall and the second side wall and connected to the first side wall or the second side wall, the first cabinet door can move relative to the equipment cabinet, and the first cabinet door is used for opening or blocking the equipment cabinet; the display screen is fixed on the first side wall, and a display area of the display screen is exposed outside the equipment cabinet; the first switching device is located in the equipment cabinet and fixed on the second side wall, and the input end of the first switching device is used for being electrically connected with a power supply; the charging connector is located outside the equipment cabinet and used for being connected with to-be-charged equipment. One part of the first cable is located in the equipment cabinet and electrically connected with the output end of the first switching device, and the other part of the first cable is located outside the equipment cabinet and electrically connected with the charging connector.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle charging, in particular to a charging device. BACKGROUND

[0002] With the development of electric vehicles, the construction of charging facilities matched with the electric vehicles also rises, among which, the charging device (for example, charging pile) can provide charging service for the electric vehicles, and therefore is installed in charging stations in large quantities. In the related art, the power distribution device in the charging device needs to be connected with multiple cables, in addition, the display screen of the charging device also needs to be connected with multiple wires. In order to avoid interference between the wires connected with the display screen and the cables connected with the power distribution device, the positions of the display screen and the power distribution device are usually far apart in the equipment cabinet (the cabinet of the charging device), for example, the power distribution device is arranged on the back plate of the equipment cabinet, and the display screen is usually located on the front of the equipment cabinet, so as to fully utilize the internal space of the equipment cabinet. In addition, the maintenance door of the charging device is usually located on the front of the equipment cabinet, so as to facilitate the maintenance of the device (for example, the power distribution device) in the equipment cabinet by personnel. Therefore, the display screen is usually arranged on the maintenance door.

[0003] However, some wires connected with the display screen need to be connected with other devices in the charging device. In the case that the power distribution device needs to be maintained, after the maintenance door is opened, the display screen will move together with the maintenance door, and the wires connected with the display screen will be pulled out in large quantities, which increases the difficulty of maintenance by personnel. UTILITY MODEL CONTENT

[0004] The present application provides a charging device, which facilitates the maintenance of the internal part of the equipment cabinet of the charging device by personnel.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The present application provides a charging device, which comprises an equipment cabinet, a first cabinet door, a display screen, a first switching device, a charging connector and a first cable. The equipment cabinet comprises a first side wall and a second side wall arranged oppositely. The first cabinet door is connected to the first side wall or the second side wall. The display screen is fixed to the first side wall, and a display area of the display screen is exposed outside the equipment cabinet. The first switching device is located in the equipment cabinet and is fixed to the second side wall. An input end of the first switching device is electrically connected to a power supply. The charging connector is located outside the equipment cabinet and is used to be connected to a device to be charged. The second side wall has a wire outlet hole through which the first cable passes. A part of the first cable is located in the equipment cabinet and is electrically connected to an output end of the first switching device. Another part of the first cable is located outside the equipment cabinet and is electrically connected to the charging connector.

[0007] The display screen is fixed on the first side wall, and after the installation of the equipment cabinet, the display screen can face the personnel to observe the content on the display screen. The first switch device is located in the equipment cabinet and is fixed on the second side wall of the equipment cabinet. The input end of the first switch device is connected with a power supply (for example, a power grid). The current provided by the power supply is input into the first switch device through the input end of the first switch device. When the first switch device is closed, the first switch device allows the current to be output from the output end of the first switch device. The current output from the output end of the first switch device is transmitted to the charging connector through the first cable, and then the charging connector is used to charge the to-be-charged equipment (for example, an electric vehicle).

[0008] The first cabinet door as an access door is located on the side of the equipment cabinet. The display screen is not arranged on the first cabinet door, but is arranged on the equipment cabinet. When the device in the equipment cabinet needs to be maintained, the position of the display screen does not change (the display screen does not move with the first cabinet door) during the opening of the first cabinet door. Therefore, the wires connected to the display screen are not pulled out due to the movement of the first cabinet door, and the difficulty of the personnel in maintaining the equipment cabinet is reduced. In addition, in the present application, the power distribution device (including the first switch device) and the display screen in the equipment cabinet are located on different sides of the first cabinet door. After the first cabinet door is opened, the display screen can be maintained towards the first side wall, and the first switch device can be maintained towards the second side wall, thereby improving the maintenance efficiency of the personnel.

[0009] In an embodiment of the present application, the charging device further comprises a cooling device located in the equipment cabinet. The cooling device comprises a heat exchanger and a heat exchanger fan. The first cable has a heat dissipation channel. The heat exchanger channel of the heat exchanger is in communication with the heat dissipation channel. The heat exchanger fan is located on the side of the heat exchanger facing the first cabinet door. The first cabinet door is provided with a first air inlet facing the heat exchanger fan.

[0010] Cooling medium is introduced into the heat dissipation channel and the heat exchanger channel of the heat exchanger, so that the cooling medium flows between the heat dissipation channel and the heat exchanger channel. The cooling medium in the heat dissipation channel can cool the first cable. After the cooling medium absorbs the heat of the first cable in the heat dissipation channel, the cooling medium flows into the heat exchanger channel. Under the action of the heat exchanger fan, the cooling medium exchanges heat with the air through the heat exchanger. The temperature of the cooling medium after heat exchange in the heat exchanger is reduced, and then the cooling medium flows back into the heat dissipation channel to cool the first cable.

[0011] Since the heat exchanger fan is located on the side of the heat exchanger facing the first cabinet door, that is, the heat exchanger is located on the side of the heat exchanger away from the first cabinet door, so that the heat exchanger is far away from the first cabinet door. During the maintenance of the device in the equipment cabinet by opening the first cabinet door, since the heat exchanger is far away from the first cabinet door, the possibility of damage to the heat exchanger is reduced under the protection of the heat exchanger fan.

[0012] In an embodiment of the present application, the charging device further comprises a second cable, a part of the second cable is located outside the device cabinet and is used for electrical connection with the power supply, and another part of the second cable is located inside the device cabinet and is electrically connected with the input end of the first switching device; the part of the second cable inside the device cabinet is at least partially located at the side of the heat exchange fan facing the first cabinet door.

[0013] The second cable delivers the current from the power supply to the input end of the first switching device, and delivers the current to the charging connector through the output end of the first switching device, so that the charging connector can charge the device to be charged. The part of the second cable inside the device cabinet is located at the side of the heat exchange fan facing the first cabinet door, that is, the part of the second cable inside the device cabinet is closer to the first cabinet door, so that the personnel can conveniently install, dismount or maintain the second cable after opening the first cabinet door.

[0014] In an embodiment of the present application, the charging device further comprises a second cabinet door, which is oppositely arranged with the first cabinet door and is connected to the first side wall or the second side wall, the heat exchanger is located at the side of the heat exchange fan facing the second cabinet door, and the second cabinet door is provided with a second air outlet facing the heat exchanger.

[0015] Since the heat exchanger is located at the side of the heat exchange fan facing the second cabinet door, that is, the heat exchanger is closer to the second cabinet door, the second cabinet door can be opened to expose the heat exchanger when the heat exchanger needs to be maintained, so that the personnel can conveniently maintain the heat exchanger. In addition, the first air outlet on the first cabinet door and the second air outlet on the second cabinet door are conducive to heat exchange between the heat exchanger and the air.

[0016] In an embodiment of the present application, the charging device further comprises a partition plate fixed in the device cabinet, the partition plate divides the internal space of the device cabinet into a first chamber and a second chamber, the first switching device is located in the first chamber, and the heat exchanger and the heat exchange fan are located in the second chamber; the cooling device further comprises a liquid inlet pipe and a liquid outlet pipe, both the liquid inlet pipe and the liquid outlet pipe pass through the partition plate, the part of the liquid inlet pipe located in the first chamber and the part of the liquid outlet pipe located in the first chamber are in communication with the heat dissipation channel, and the part of the liquid inlet pipe located in the second chamber and the part of the liquid outlet pipe located in the second chamber are in communication with the heat exchange channel of the heat exchanger.

[0017] The internal space of the device cabinet is divided by the partition plate, so that the cooling device and the power distribution device (including the first switching device) in the device cabinet are separated from each other, water and electricity are isolated, the possibility of liquid splashing on the power distribution device in the case of cooling device liquid leakage (for example, cooling medium leakage) is reduced, and the safety hazard is reduced. In addition, the heat dissipation channel and the heat exchange channel of the heat exchanger are communicated through the liquid inlet pipe and the liquid outlet pipe, so that the cooling medium flows between the heat dissipation channel and the heat exchange channel of the heat exchanger.

[0018] In an embodiment of the present application, the first switching device is located above the heat exchanger and the heat exchanger fan.

[0019] In the case of natural disasters such as floods, the power distribution device (including the first switching device) in the equipment cabinet is arranged above the cooling device, which can delay the risk of short circuit of the power distribution device. In addition, it also reduces the possibility of liquid splashing on the power distribution device in the case of cooling device liquid leakage (such as cooling medium leakage), prolonging the service life of the power distribution device.

[0020] In an embodiment of the present application, the charging device further comprises a control device, the control device comprising a circuit board and a plurality of electronic components, the circuit board being fixed in the equipment cabinet, the circuit board being located on the side of the first switching device away from the first cabinet door, one board surface of the circuit board facing the first cabinet door, and the plurality of electronic components being fixed on the board surface of the circuit board facing the first cabinet door.

[0021] The circuit board is arranged on the side of the first switching device away from the first cabinet door, which reduces the interference of the circuit board on the maintenance of the first switching device in the case of needing to maintain the first switching device. Moreover, the circuit board is far away from the first cabinet door, which can reduce the possibility of damage to the circuit board in the process of opening the first cabinet door to maintain other devices (devices other than the control device) in the equipment cabinet, thereby protecting the circuit board. In addition, the plurality of electronic components (including control chips) on the circuit board are fixed on the side of the circuit board facing the first cabinet door, so that the plurality of electronic components on the circuit board face the personnel after the first cabinet door is opened, facilitating the maintenance of the circuit board and the electronic components thereon in the case of needing to maintain the control device.

[0022] In an embodiment of the present application, the charging device further comprises a power supply device, the power supply device being electrically connected to the power source and the circuit board, and the power supply device being configured to convert the power input by the power source and output the converted power to the circuit board to supply power to the circuit board; the power supply device is located in the equipment cabinet and connected to the first side wall, and the power supply device is capable of sliding relative to the first side wall in the direction of approaching or moving away from the first cabinet door.

[0023] The power supply device is an auxiliary power supply, and the power supply device is arranged in a form capable of sliding relative to the equipment cabinet, facilitating the installation and disassembly of the power supply device. In the process of pulling out the power supply device, the power supply device is caused to slide in the direction of approaching or moving away from the first cabinet door, and after the first cabinet door is opened, the internal space of the equipment cabinet is communicated with the external space, the power supply device is pulled out to the outside of the equipment cabinet by the personnel, and the disassembly of the power supply device is realized. In the case of needing to install the power supply device, the power supply device is pushed towards the inside of the equipment cabinet, and after the power supply device is located in the inside of the equipment cabinet, the power supply device is continuously pushed in the direction of moving away from the first cabinet door, thereby completing the installation of the power supply device.

[0024] In addition, since the first switch device on the second side wall needs a connecting cable, in the present application, the power supply device is arranged on the first side wall, the power supply device is capable of sliding relative to the first side wall, the power supply device can be disassembled, the influence of the power supply device on the wiring of the first switch device is reduced, and the internal layout of the equipment cabinet is more reasonable.

[0025] In an embodiment of the present application, the charging device further comprises a second switch device and a first mounting seat, an input end of the second switch device is electrically connected with the power supply, and an output end of the second switch device is electrically connected with the power supply device; the circuit board and the second switch device are fixed on the first mounting seat, the first mounting seat is fixed in the equipment cabinet, and the first mounting seat is located on a side of the first switch device away from the first cabinet door.

[0026] The second switch device (for example, a circuit breaker, a contactor, etc.) is a power distribution device of the power supply device, and the second switch device is capable of controlling the on-off of the circuit between the power supply device and the power supply. The second switch device and the circuit board are fixed on the first mounting seat, the integration of the control device and the second switch device is realized, the integrated control device and the second switch device are conveniently installed as a whole, for example, the control device and the second switch device are first fixed on the first mounting seat, and then the first mounting seat carrying the control device and the second switch device is fixed in the equipment cabinet as a whole, and the production efficiency of the charging device is improved.

[0027] In an embodiment of the present application, the charging device further comprises a gun seat, the gun seat is fixed on the first side wall, the gun seat and the display screen are arranged in a vertical direction, and the gun seat is used for inserting the charging connector.

[0028] The gun seat is fixed on the first side wall, in the case that the first cabinet door is opened, the gun seat and the charging connector arranged thereon will not move with the movement of the first cabinet door. In addition, the gun seat and the display screen are arranged in a vertical direction, the width of the equipment cabinet can be reduced, and the floor area of the equipment cabinet is reduced.

[0029] In an embodiment of the present application, the charging device further comprises a card reading device, the card reading device is fixed on the first side wall, the card reading device is exposed outside the equipment cabinet, and the card reading device and the display screen are arranged in a vertical direction.

[0030] The card reading device is used for identifying an IC card (Integrated Circuit Card), so that the charging device can identify the IC card (a bank card, a charging card, etc.) of a user through the card reading device and perform corresponding charging deduction. The card reading device and the display screen are arranged in a vertical direction, the width of the equipment cabinet can be reduced, and the floor area of the equipment cabinet is reduced.

[0031] In an embodiment of the present application, the charging device further comprises a second mounting base, an input metal strip and an output metal strip. The second mounting base is fixed to the second side wall. The first switching device, the input metal strip and the output metal strip are all fixed to the second mounting base. The input end of the first switching device is connected to the power supply through the input metal strip. The output metal strip is connected to the output end of the first switching device. The part of the first cable located in the equipment cabinet is connected to the output metal strip.

[0032] Fixing the first switching device, the input metal strip and the output metal strip to the second mounting base makes the power distribution device (including the first switching device, the input metal strip and the output metal strip) in the equipment cabinet have a higher integration degree. This facilitates the overall installation, overall disassembly and overall replacement of the power distribution device, and greatly improves the installation efficiency (for example, the power distribution device is installed first, and then the installed power distribution device is installed in the equipment cabinet as a whole) and the later maintenance efficiency of the charging device.

[0033] In an embodiment of the present application, the charging device further comprises a power meter. The power meter is located in the equipment cabinet and fixed to the first cabinet door. The first cabinet door has a window. The display area of the power meter is exposed outside the equipment cabinet through the window.

[0034] The power meter can detect the current flowing through the input end of the first switching device or the current flowing through the output end of the first switching device, thereby realizing the metering of the amount of charge of the charging device. Since the display area of the power meter is exposed outside the equipment cabinet through the window, it is convenient for personnel to observe the value of the power meter. In addition, since the first cabinet door where the power meter is located is adjacent to the first side wall where the display screen is located, the display screen of the power meter is exposed outside the equipment cabinet from the first cabinet door. This also facilitates personnel to compare the data displayed by the display screen and the power meter.

[0035] In an embodiment of the present application, the charging device further comprises a functional component. The functional component comprises at least one of a heating device, a turbulence fan or an emergency stop button. The functional component is located in the equipment cabinet and fixed to the first cabinet door. The heating device is used to heat the internal space of the equipment cabinet. The turbulence fan is used to blow air into the equipment cabinet. The emergency stop button is used to control the first switching device to disconnect the circuit between the power supply and the charging connector.

[0036] At least one of the heating device, the turbulence fan or the emergency stop button is arranged on the first cabinet door, and after the first cabinet door is opened, the function part (the heating device, the turbulence fan or the emergency stop button) on the first cabinet door is exposed outside, so that personnel can maintain the function part. After the first cabinet door is opened, the device on the first cabinet door will inevitably collide with personnel or maintenance tools. The heating device, the turbulence fan or the emergency stop button are all devices that are not easy to damage. By arranging the function part on the first cabinet door, more space is provided on the first side wall and the second side wall for devices (for example, circuit boards, electronic components and the like) that are easy to damage. After the first cabinet door is opened, some devices that are not easy to damage (for example, the function part) are exposed outside with the first cabinet door, and some devices that are easy to damage are still located in the equipment cabinet, so that the layout of the devices in the equipment cabinet is more reasonable, and the overall service life of the charging equipment is prolonged.

[0037] In an embodiment of the present application, the charging equipment further comprises a baffle, the baffle is fixed on the first cabinet door, the baffle extends towards the internal space of the equipment cabinet, and the baffle is located above the function part.

[0038] After the first cabinet door is opened, due to the existence of the baffle, the liquid dripping on the top of the first cabinet door can be blocked to a certain extent, and the possibility of short circuit between the devices on the first cabinet door caused by the liquid dripping on the top of the first cabinet door is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A structural schematic diagram of a charging equipment provided by an embodiment of the present application is provided;

[0040] Figure 2 A structural schematic diagram of another charging equipment provided by an embodiment of the present application is provided;

[0041] Figure 3 A partial structural schematic diagram of a charging equipment provided by an embodiment of the present application is provided;

[0042] Figure 4 A schematic diagram of the internal structure of a charging equipment provided by an embodiment of the present application is provided under a first perspective;

[0043] Figure 5 A schematic diagram of the internal structure of a charging equipment provided by an embodiment of the present application is provided under a second perspective;

[0044] Figure 6 A structural schematic diagram of a heat dissipation channel provided by an embodiment of the present application is provided;

[0045] Figure 7 A schematic diagram of the internal structure of a charging equipment provided by an embodiment of the present application is provided under a third perspective;

[0046] Figure 8 AFigure 7 a cross-sectional view of the charging device in the A-A direction;

[0047] Figure 9 a structural schematic view of a second opening provided for an embodiment of the present application;

[0048] Figure 10 directional schematic views of four air flows for heat exchange with a heat exchanger provided for an embodiment of the present application;

[0049] Figure 11 position example views of two gun seats provided for an embodiment of the present application;

[0050] Figure 12 a structural schematic view of a gun line pipe device provided for an embodiment of the present application.

[0051] Reference Signs:

[0052] 100 - charging device; 1 - device cabinet; 11 - first opening; 12 - first side wall; 121 - display screen; 122 - card reading device; 1221 - radio frequency identification card reader; 1222 - point of sale terminal; 123 - mounting plate; 124 - gun seat; 1241 - homing switch; 125 - power supply device; 126 - mounting shell; 1261 - mounting port; 13 - second side wall; 131 - wire outlet hole; 14 - first cabinet door; 141 - first air outlet; 142 - electric meter; 1421 - window; 143 - turbulence fan; 1431 - first turbulence fan; 1432 - second turbulence fan; 144 - emergency stop button; 145 - heating device; 146 - baffle; 147 - function piece; 15 - second opening; 16 - second cabinet door; 161 - second air outlet; 17 - partition; 171 - first chamber; 172 - second chamber; 18 - first mounting seat; 181 - control device; 1811 - circuit board; 1812 - electronic component; 1813 - control chip; 182 - second switching device; 19 - display lamp; 2 - power conversion device; 3 - alternating current power distribution device; 4 - first direct current power distribution device; 41 - first switching device; 42 - input metal row; 43 - output metal row; 44 - protection device; 45 - second mounting seat; 46 - shunt; 5 - main cabinet; 6 - second direct current power distribution device; 7 - second cable; 8 - charging connector; 9 - first cable; 91 - heat dissipation channel; 92 - protective sleeve; 93 - positive electrode line; 94 - negative electrode line; 10 - cooling device; 101 - heat exchanger; 1011 - heat exchange channel; 102 - heat exchange fan; 1021 - first heat exchange fan; 1022 - second heat exchange fan; 103 - drive pump; 104 - liquid inlet pipe; 105 - liquid outlet pipe; 106 - expansion water tank; 107 - liquid level temperature sensor; 110 - water immersion sensor; 120 - gun line management device; 200 - power supply. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0054] In the present application, unless specifically defined and limited otherwise, the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship as shown in the figures, which can include but not limited to the orientation of the components shown in the figures, wherein these directional terms can be relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components shown in the figures, and cannot be understood as a limitation on the present application.

[0055] In the present application, the terms "first", "second", and the like are only for descriptive purposes, and are used to distinguish one element from another element, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0056] In the present application, unless specifically defined and limited otherwise, the meaning of "multiple" is two or more.

[0057] In addition, in the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present relevant concepts in a concrete manner.

[0058] In the drawings of the embodiments of the present application, the entity structures of components, assemblies, etc. are represented by guide lines; the structures composed of multiple components are represented by guide lines in parentheses or with solid arrows; the hollow structures such as openings, holes, spaces, cavities, etc. are represented by guide lines with hollow arrows.

[0059] The embodiments of the present application provide a charging device 100, Figure 1 An exemplary structure of a charging device 100 is shown, referring to Figure 1 The charging device 100 is an integrated charging pile, wherein the charging device 100 comprises a device cabinet 1, a power conversion device 2, an alternating current power distribution device 3 and a first direct current power distribution device 4, wherein the power conversion device 2, the alternating current power distribution device 3 and the first direct current power distribution device 4 are all installed in the device cabinet 1.

[0060] The input end of the alternating current power distribution device 3 is used to connect a power source 200, which can be a power grid. The output end of the alternating current power distribution device 3 is connected to the input end of the power conversion device 2, which is used to convert alternating current input from the power source 200 through the alternating current power distribution device 3 into direct current and then output. The output end of the power conversion device 2 is connected to the input end of the first direct current power distribution device 4.

[0061] In addition, referring to Figure 1 , the charging device 100 further comprises a charging connector 8 (for example, a charging gun) and a first cable 9 (for example, a charging gun cable), the charging connector 8 is located outside the cabinet, and is used to connect a device to be charged 100 (for example, an electric vehicle). The charging connector 8 is connected to the first direct current power distribution device 4 through the first cable 9. The first direct current power distribution device 4 comprises a first switching device 41 (for example, an air switch, a relay, or a contactor, etc.), the output end of the power conversion device 2 is electrically connected to the input end of the first switching device 41, and the output end of the first switching device 41 is electrically connected to the first cable 9. When the first switching device 41 turns on the circuit between the output end of the power conversion device 2 and the first cable 9, the power output by the power conversion device 2 can be transmitted to the charging connector 8 through the first cable 9. When the first switching device 41 turns off the circuit between the output end of the power conversion device 2 and the first cable 9, the charging connector 8 cannot call the power output by the power conversion device 2.

[0062] Figure 2 Another example of the structure of the charging device 100 is shown, referring to Figure 2 , the charging device 100 is a split charging pile, wherein the charging device 100 comprises a host part and a plurality of terminal parts, wherein the host part of the charging device 100 comprises a host cabinet 5, a power conversion device 2, an alternating current power distribution device 3, and a second direct current power distribution device 6, wherein the power conversion device 2, the alternating current power distribution device 3, and the second direct current power distribution device 6 are all installed in the host cabinet 5. The input end of the alternating current power distribution device 3 is used to connect a power source 200 (for example, a power grid), and the power conversion device 2 is used to convert alternating current input from the power source 200 through the alternating current power distribution device 3 into direct current and then output. The second direct current power distribution device 6 can distribute the direct current output by the power conversion device 2 to one or more terminal parts.

[0063] Each terminal part of the charging device 100 includes a cabinet 1, a first DC power distribution device 4, a charging connector 8, and a first cable 9. The first DC power distribution device 4 is installed inside the cabinet 1, and the charging connector 8 is located outside the cabinet 1. The first DC power distribution device 4 includes a first switching device 41. The input terminal of the first switching device 41 is electrically connected to a second DC power distribution device 6, and the output terminal of the first switching device 41 is electrically connected to the charging connector 8 through the first cable 9. In this way, the charging connector 8 can output the current (which comes from the power supply 200) after power conversion by the power conversion device 2.

[0064] by Figure 2 Taking the charging device 100 in the example, Figure 3 An example is shown Figure 2 A partial structure of the charging device 100 (the terminal part of the charging device 100). Figure 4 An example is shown Figure 3 The internal structure of the charging device 100 is referenced. Figure 3 and Figure 4 The charging device 100 includes a cabinet 1 and a first cabinet door 14. The cabinet 1 has a first opening 11 (access panel) communicating with its internal space. The walls of the cabinet 1 that enclose its internal space include a first side wall 12 and a second side wall 13, which are arranged opposite to each other. The first opening 11 is located between the first side wall 12 and the second side wall 13. For example, after the cabinet 1 is installed, the first side wall 12 and the second side wall 13 can be the front panel of the cabinet 1 and the rear panel of the cabinet 1, respectively. Alternatively, after the cabinet 1 is installed, the first side wall 12 and the second side wall 13 can be the left side panel of the cabinet 1 and the right side panel of the cabinet 1, respectively.

[0065] In the closed state, the first cabinet door 14 is located between the first side wall 12 and the second side wall 13, and the first cabinet door 14 is connected to either the first side wall 12 or the second side wall 13, as shown in the reference. Figure 3 and Figure 4 Taking the first cabinet door 14 connected to the second side wall 13 as an example, the first cabinet door 14 can move relative to the equipment cabinet 1 (including rotation, sliding, etc.). For example, the first cabinet door 14 is hinged to the second side wall 13 (connected by a hinge). The first cabinet door 14 can open or close the equipment cabinet 1. For example, when the first cabinet door 14 closes the first opening 11, the first cabinet door 14 also closes the equipment cabinet 1. When the first cabinet door 14 opens the first opening 11, the first cabinet door 14 also opens the equipment cabinet 1. Figure 3 This illustrates the situation where the first cabinet door 14 blocks the first opening 11 (the first cabinet door 14 is in a closed state and blocks the equipment cabinet 1). Figure 4The first cabinet door 14 is shown in an open state, and the first cabinet door 14 opens the first opening 11.

[0066] Referring to Figure 3 The charging device 100 further comprises a display screen 121, the display screen 121 is fixed on the first side wall 12, and a display area of the display screen 121 is exposed outside the device cabinet 1, for example, the display area of the display screen 121 is exposed outside the device cabinet 1 through an opening on the first side wall 12. The display area of the display screen 121 exposed outside the device cabinet 1 is used for a user to observe the content displayed on the display screen 121 (for example, the display screen 121 can display charging information, charging status, etc.). After the device cabinet 1 is installed, the display screen 121 can be directed towards the user so that the user can observe the content on the display screen 121.

[0067] The display screen 121 is not arranged on the first cabinet door 14 which is a maintenance door, but is installed on the first side wall 12 of the device cabinet 1. When the device cabinet 1 needs to be maintained, the position of the display screen 121 will not change (the display screen 121 will not move with the first cabinet door 14) during the opening of the first cabinet door 14. In this way, the wires connected to the display screen 121 will not be pulled out due to the movement of the first cabinet door 14, and the difficulty of maintaining the device cabinet 1 is reduced.

[0068] In some examples, the charging device 100 further comprises a card reading device 122, the card reading device 122 is fixed on the first side wall 12, and the card reading device 122 is exposed outside the device cabinet 1. In some examples, the card reading device 122 is arranged on the first side wall 12. Figure 3 In the example shown, the card reading device 122 comprises a radio frequency identification card reader 1221 (RFID card reader) and a point of sale terminal 1222 (POS terminal), an identification area of the radio frequency identification card reader 1221 is exposed outside the device cabinet 1, and a card insertion area and a password input area of the point of sale terminal 1222 are exposed outside the device cabinet 1. In other examples, only the radio frequency identification card reader 1221 can be arranged on the first side wall 12 without the point of sale terminal 1222, or only the point of sale terminal 1222 can be arranged on the first side wall 12 without the radio frequency identification card reader 1221. In other examples, the card reading device 122 can also be other card reading devices other than the two card reading devices described above. The card reading device 122 is used to identify an integrated circuit card (IC card), so that the charging device 100 can identify an IC card (bank card, charging card, etc.) of a user through the card reading device 122 and perform corresponding charging and deduction.

[0069] In Figure 3 and Figure 4In the shown example, the card reading device 122 and the display screen 121 are arranged in a vertical direction. By this arrangement, the size of the equipment cabinet 1 in the width direction can be reduced, and the floor area of the equipment cabinet 1 can be reduced. In other examples, the card reading device 122 can also be arranged at other suitable positions. The height direction of the equipment cabinet 1 refers to the direction of the gravity of the equipment cabinet 1 after installation. The thickness direction of the equipment cabinet 1 refers to the distribution direction of the first side wall 12 and the second side wall 13. The width direction of the equipment cabinet 1 is perpendicular to the thickness direction and the height direction of the equipment cabinet 1. It can be understood that the width direction of the equipment cabinet 1 and the thickness direction of the equipment cabinet 1 are two related vertical horizontal directions.

[0070] In some examples, the display screen 121 and the card reading device 122 can be integrated into one module. In this way, the integration of the display screen 121 and the card reading device 122 can be improved, and the module formed by the integrated display screen 121 and card reading device 122 can be installed or disassembled as a whole. For example, referring to Figure 3 The charging device 100 further includes a mounting plate 123. The display screen 121 and the card reading device 122 are fixed on the mounting plate 123. Before assembling the charging device 100, the display screen 121 and the card reading device 122 can be fixed on the mounting plate 123 in advance. Then, the mounting plate 123 is fixed on the first side wall 12, so that the mounting plate 123 carries the display screen 121 and the card reading device 122 to be fixed on the first side wall 12. In this way, the assembly efficiency of the charging device 100 is improved.

[0071] In addition, referring to Figure 4 The first DC power distribution device 4 of the charging device 100 includes a first switching device 41. The first switching device 41 is located in the equipment cabinet 1 and is fixed on the second side wall 13. The input end of the first switching device 41 is configured to be electrically connected to the power supply 200. For example, the charging device 100 further includes a second cable 7. A part of the second cable 7 is located in the equipment cabinet 1 and is electrically connected to the input end of the first switching device 41. Another part of the second cable 7 is located outside the equipment cabinet 1 and is configured to be electrically connected to the power supply 200. Referring back to Figure 2 The part of the second cable 7 outside the equipment cabinet 1 is electrically connected to the second DC power distribution device 6. The second DC power distribution device 6 is electrically connected to the power conversion device 2. The power conversion device 2 is electrically connected to the AC power distribution device 3. The AC power distribution device 3 is electrically connected to the power supply 200. In this way, the second cable 7 is electrically connected to the power supply 200 and the first switching device 41. The current of the power supply 200 is converted by the power conversion device 2 and then transmitted to the input end of the first switching device 41 through the second cable 7. If the first switching device 41 is replaced by Figure 1The charging device 100 is shown, the input end of the first switching device 41 is electrically connected with the power conversion device 2, the power conversion device 2 is electrically connected with the AC power distribution device 3, the AC power distribution device 3 is electrically connected with the power supply 200 through the second cable 7, in this way, the second cable 7 is electrically connected with the power supply 200 and the first switching device 41, the current of the power supply 200 is transmitted to the AC power distribution device 3 through the second cable 7, and then transmitted to the input end of the first switching device 41 after power conversion by the power conversion device 2.

[0072] Continuing to refer to Figure 3 and Figure 4 , the charging device 100 further comprises a charging connector 8, the charging connector 8 is located outside the equipment cabinet 1 and is used to connect with the device 100 to be charged, in the case that the charging connector 8 is not used, the charging connector 8 can be placed on the equipment cabinet 1. For example, the charging device 100 further comprises a holster 124, in the example shown in Figure 3 and Figure 4 , the holster 124 is fixed on the first side wall 12, the holster 124 is used for the charging connector 8 to be inserted, that is, in the case that the charging connector 8 is not used, the charging connector 8 can be inserted into the holster 124. Among them, in the example shown in Figure 3 and Figure 4 , the holster 124 is fixed on the first side wall 12, in the case that the first cabinet door 14 is opened, the holster 124 and the charging connector 8 placed thereon will not move with the movement of the first cabinet door 14.

[0073] Figure 5 The example shows the internal structure of the equipment cabinet 1 from another perspective Figure 5 and Figure 4 are the equipment cabinet 1 from two different perspectives), referring to Figure 5 , the holster 124 is provided with a homing switch 1241 (for example, a micro switch), after the charging connector 8 is inserted into the holster 124, the homing switch 1241 will be triggered, and after the charging connector 8 is pulled out of the holster 124, the homing switch 1241 will be released. The charging device 100 can judge whether the charging connector 8 is inserted into the holster 124 by detecting whether the homing switch 1241 is triggered.

[0074] In addition, in the example that the holster 124 is fixed on the first side wall 12, the arrangement mode of the holster 124 and the display screen 121 can be set according to requirements, for example, referring to Figure 5 , the holster 124 and the display screen 121 are arranged in the vertical direction, and the holster 124 is located below the display screen 121, through this arrangement mode, the size of the equipment cabinet 1 in the width direction can be reduced, and the floor area of the equipment cabinet 1 can be reduced.

[0075] In order to connect the first switching device 41 with the charging connector 8, referring toFigure 4 The charging device 100 also includes a first cable 9, wherein the second sidewall 13 has an outlet hole 131 for the first cable 9 to pass through. A portion of the first cable 9 is located inside the equipment cabinet 1 and electrically connected to the output terminal of the first switching device 41, and the other portion of the first cable 9 is located outside the equipment cabinet 1 and connected to the charging connector 8. The input terminal of the first switching device 41 is electrically connected to the power supply 200. The current provided by the power supply 200 is converted and then delivered to the first switching device 41 through the input terminal. When the first switching device 41 is closed, the first switching device 41 allows current to be output from the output terminal of the first switching device 41. The current output from the output terminal of the first switching device 41 is delivered to the charging connector 8 via the first cable 9, and then the charging connector 8 charges the device 100 to be charged.

[0076] In this application, the first switch device 41 is disposed on the second side wall 13. The first switch device 41 and the display screen 121 are located on different sides of the first opening 11. After opening the first cabinet door 14, the display screen 121 can be maintained facing the first side wall 12, and the first switch device 41 can be maintained facing the second side wall 13, thereby improving the maintenance efficiency of personnel.

[0077] Furthermore, both the outlet hole 131 of the first cable 9 and the first switching device 41 are located on the second side wall 13, allowing the first cable 9 to exit nearby and shortening its length within the equipment cabinet 1. Moreover, in Figure 4 In the example shown, the cable outlet 131 is located above the first switching device 41, allowing the first cable 9 to extend from the top of the equipment cabinet 1. This effectively reduces the weight of the first cable 9, making it easier and more convenient for the user to use the charging connector 8.

[0078] In some examples, refer to Figure 4 The first DC power distribution device 4 of the charging equipment 100 further includes an input metal busbar 42 (e.g., copper or aluminum busbar) and an output metal busbar 43 (e.g., copper or aluminum busbar). The input metal busbar 42 is connected to the input terminal of the first switching device 41, and the output metal busbar 43 is connected to the output terminal of the first switching device 41. The portion of the first cable 9 located inside the equipment cabinet 1 is electrically connected to the output metal busbar 43, and the portion of the second cable 7 located inside the equipment cabinet 1 is electrically connected to the input metal busbar 42. Wherein, Figure 4 In the example shown, one end of the second cable 7 is fixedly connected to the input metal busbar 42 to achieve an electrical connection between the second cable 7 and the input metal busbar 42. In some other examples (e.g.) Figure 1In the case of the integrated charging pile shown, the second cable 7 is connected to the input end of the alternating power distribution device 3, the output end of the alternating power distribution device 3 is electrically connected to the input end of the power conversion device 2 through copper bars or wires, and the output end of the power conversion device 2 is connected to the input metal bar 42 through copper bars or wires, so as to realize the electrical connection between the second cable 7 and the input metal bar 42.

[0079] In some examples, with reference to Figure 4 The first direct current power distribution device 4 of the charging device 100 can further include a protection device 44, which can be a fuse or a surge protector, etc. The protection device 44 is connected to the input metal bar 42 or the output metal bar 43. For example, in the case where the protection device 44 is a fuse, the protection device 44 is fixedly connected between the input end of the switching device 23 and the input metal bar 42, or the protection device 44 is fixedly connected between the output end of the switching device 23 and the output metal bar 43, and the protection device 44 is used to break the circuit between the switching device 23 and the input metal bar 42 (or the output metal bar 43). For another example, in the case where the protection device 44 is a surge protector, for example, the input end of the protection device 44 is electrically connected to the input metal bar 42 through a wire, or the input end of the protection device 44 is electrically connected to the output metal bar 43 through a wire, and in addition, the output end of the protection device 44 is grounded. In the case where a sharp peak current or voltage occurs in the circuit, the protection device 44 shunts the current flowing through the input metal bar 42 or the current flowing through the output metal bar 43, thereby reducing the risk of damage to other devices in the power circuit caused by surges. The plurality of devices or components included in the first direct current power distribution device 4 of the charging device 100 (for example, the first switching device 41, the protection device 44, the input metal bar 42, the output metal bar 43, etc.) can be installed on the second side wall 13 one by one, or can be integrated and installed on the second side wall 13. For example, the first direct current power distribution device 4 of the charging device 100 can further include a second mounting seat 45 fixed on the second side wall 13, and the first switching device 41, the protection device 44, the input metal bar 42, and the output metal bar 43 are fixed on the second mounting seat 45, so that the power distribution device (the first direct current power distribution device 4) in the equipment cabinet 1 has a higher integration, and the installation efficiency and the later maintenance efficiency of the charging device 100 are greatly improved.

[0080] For example, during installation of the first DC power distribution device 4, the first DC power distribution device 4 can be installed independently, that is, the first switch device 41, the protection device 44, the input metal bar 42 and the output metal bar 43 are all fixed on the second mounting seat 45, and then the mounting plate 123 is installed on the second side wall 13, so that the first DC power distribution device 4 can be installed on the second side wall 13 as a whole. For example, during maintenance of the first DC power distribution device 4, the first DC power distribution device 4 can be disassembled and replaced as a whole by disassembling the second mounting seat 45.

[0081] Referring to Figure 4 , the second mounting seat 45 can be a metal plate. In other examples, the second mounting seat 45 can also be a support frame or other structure capable of serving as a base or a bottom plate, which is not limited in the present application.

[0082] In some examples, the first cable 9 can be cooled, for example, referring to Figure 5 The charging device 100 can further include a cooling device 10 located in the equipment cabinet 1, and the cooling device 10 includes a heat exchanger 101, a heat exchanger fan 102 and a driving pump 103. In addition, the first cable 9 has a heat dissipation channel 91, Figure 6 An example shows a structure of the heat dissipation channel 91, referring to Figure 6 The heat exchanger 101 communicates with the heat dissipation channel 91, for example, the cooling device 10 further includes a liquid inlet pipe 104 and a liquid outlet pipe 105, one end of the liquid inlet pipe 104 communicates with the inlet of the heat exchanger 101, the other end of the liquid inlet pipe 104 communicates with the outlet of the heat dissipation channel 91, one end of the liquid outlet pipe 105 communicates with the outlet of the heat exchanger 101, the other end of the liquid outlet pipe 105 communicates with the inlet of the heat dissipation channel 91, and the cooling medium (for example, water-based solution or oil-based solution) flows out from the outlet of the heat exchanger 101 and flows into the liquid outlet pipe 105 under the driving of the driving pump 103, the cooling medium in the liquid outlet pipe 105 flows into the heat dissipation channel 91 to cool the first cable 9, and then flows from the heat dissipation channel 91 to the liquid inlet pipe 104 and returns to the heat exchanger 101 through the liquid inlet pipe 104, realizing the circulation of the cooling medium between the heat exchanger 101 and the heat dissipation channel 91.

[0083] The cooling medium in the heat dissipation channel 91 can cool the first cable 9, and after the cooling medium absorbs the heat of the first cable 9 in the heat dissipation channel 91, it flows into the heat exchanger 101 of the heat exchanger 101, and the heat exchanger fan 102 blows air towards the heat exchanger 101, and under the action of the heat exchanger fan 102, the cooling medium exchanges heat with the air through the heat exchanger 101, and the cooling medium exchanges heat in the heat exchanger 101, and then flows back into the heat dissipation channel 91 to cool the first cable 9.

[0084] Figure 7 An illustrative view shows the internal structure of equipment cabinet 1 from another perspective. Figure 7 , Figure 5 and Figure 4 These are three different perspectives on the equipment cabinet 1). Figure 8 yes Figure 7 The cross-sectional view of the charging device 100 after being cut along AA, refer to... Figure 8 The heat exchange fan 102 is located on the side of the heat exchanger 101 facing the first cabinet door 14 (with the first cabinet door 14 in its closed state as a reference). That is, the heat exchange fan 102 is located on the side of the heat exchanger 101 facing the first opening 11, so that the heat exchanger 101 is far away from the first opening 11. During the maintenance of the components inside the equipment cabinet 1 when the first cabinet door 14 is opened, the possibility of damage to the heat exchanger 101 is reduced due to the distance between the heat exchanger 101 and the first opening 11, protected by the heat exchange fan 102. In addition, an air guide shroud (not shown in the attached figure) can be installed between the heat exchanger 101 and the heat exchange fan 102 to concentrate and guide the airflow between the heat exchanger 101 and the heat exchange fan 102.

[0085] Among them, return reference Figure 7 In order to allow outside air to enter the equipment cabinet 1 and exchange heat with the heat exchanger 101, the first cabinet door 14 has a first air vent 141. The first air vent 141 faces the heat exchange fan 102 (when the first cabinet door 14 is closed). Under the action of the heat exchange fan 102, the air outside the equipment cabinet 1 enters the equipment cabinet 1 through the first air vent 141 and exchanges heat with the heat exchanger 101 to cool the cooling medium inside the heat exchanger 101.

[0086] In some examples, the equipment cabinet 1 also has another access panel; for example, the equipment cabinet 1 has a second opening 15 that communicates with its internal space. Figure 9 An exemplary structure of the second opening 15 is shown. (Refer to...) Figure 9 The second opening 15 is located between the first side wall 12 and the second side wall 13. The distribution direction of the second opening 15 and the first opening 11 is perpendicular to the distribution direction of the first side wall 12 and the second side wall 13. That is, the first side wall 12 and the second side wall 13 are distributed along the thickness direction of the equipment cabinet 1, and the first opening 11 and the second opening 15 are distributed along the width direction of the cabinet. Furthermore, the charging equipment 100 also includes a second cabinet door 16, which is located between the first side wall 12 and the second side wall 13. The first cabinet door 14 and the second cabinet door 16 are arranged opposite to each other. Figure 9In the shown example, the second cabinet door 16 is connected to the first side wall 12, in other examples, the second cabinet door 16 is connected to the second side wall 13, the second cabinet door 16 is movable relative to the equipment cabinet 1 (for example, the second cabinet door 16 is connected to the equipment cabinet 1 by a hinge), and the second cabinet door 16 is used to open or close the equipment cabinet 1, for example, when the second cabinet door 16 closes the second opening 15, the second cabinet door 16 also closes the equipment cabinet 1, and when the second cabinet door 16 opens the second opening 15, the second cabinet door 16 also opens the equipment cabinet 1.

[0087] With reference to Figure 8 and Figure 9 , the heat exchanger 101 is located on the side of the heat exchange fan 102 facing the second cabinet door 16 (with reference to the second cabinet door 16 in the closed state), that is, the heat exchanger 101 is relatively close to the second cabinet door 16, and in the case of needing to maintain the heat exchanger 101, the second cabinet door 16 can be opened to expose the heat exchanger 101 to the outside through the second opening 15, thereby facilitating personnel to maintain the heat exchanger 101. In the case that the equipment cabinet 1 has both the first opening 11 and the second opening 15, the functions of the first opening 11 and the second opening 15 can be divided, for example, the first opening 11 can be a commonly used maintenance opening (used for maintaining the display screen 121, the first direct current power distribution device 4, etc.), and the second opening 15 can be a less commonly used maintenance opening (used for maintaining the heat exchanger 101).

[0088] In order to facilitate the heat exchange between the heat exchanger 101 and the air, with reference to Figure 9 , the second cabinet door 16 has a second air port 161, the second air port 161 faces the heat exchanger 101 (in the closed state of the second cabinet door 16), the heat exchange fan 102 makes the airflow flow between the first air port 141 and the second air port 161, and through the cooperation of the first air port 141 on the first cabinet door 14 and the second air port 161 on the second cabinet door 16, the air outside the equipment cabinet 1 enters the equipment cabinet 1 through one of the first air port 141 and the second air port 161 to exchange heat with the heat exchanger 101, and the air after heat exchange is discharged to the outside of the equipment cabinet 1 through the other one of the first air port 141 and the second air port 161, which is conducive to the heat exchange between the heat exchanger 101 and the air.

[0089] Figure 10 Exemplarily, four directions of the airflow for heat exchange with the heat exchanger 101 are shown, in Figure 9 the shown charging equipment 100, if the first air port 141 is an air inlet and the second air port 161 is an air outlet, then the direction of the airflow for heat exchange with the heat exchanger 101 is as shown in (a) of Figure 10 In Figure 9In the charging device 100 shown, if the first air outlet 141 is the air outlet and the second air outlet 161 is the air inlet, then the direction of the airflow that exchanges heat with the heat exchanger 101 is as follows: Figure 10 As shown in (b) above. In some other examples, a first air vent 141 is disposed on the first side wall 12, and a second air vent 161 is disposed on the second side wall 13. The heat exchange fan 102 causes airflow to flow between the first air vent 141 and the second air vent 161. If the first air vent 141 is an air inlet and the second air vent 161 is an air outlet, then the direction of the airflow exchanging heat with the heat exchanger 101 is as follows: Figure 10 As shown in (c); if the first air outlet 141 is the air outlet and the second air outlet 161 is the air inlet, then the direction of the airflow exchanging heat with the heat exchanger 101 is as follows: Figure 10 As shown in (d) in the figure.

[0090] In the example where a cooling device 10 is installed inside equipment cabinet 1, refer back to the example. Figure 7 The first DC power distribution device 4 (including at least the first switching device 41) can be positioned above the cooling device 10. In the event of natural disasters such as floods or heavy rains, if water accumulates inside the equipment cabinet 1, the higher installation position of the first DC power distribution device 4 can delay the risk of short circuits. Furthermore, it reduces the likelihood of liquid splashing onto the first DC power distribution device 4 in the event of leakage from the cooling device 10 (e.g., leakage of cooling medium), thus extending the lifespan of the first DC power distribution device 4. In other examples, the first DC power distribution device 4 can also be positioned below the cooling device 10.

[0091] Furthermore, when both the first DC power distribution device 4 and the cooling device 10 are installed inside the equipment cabinet 1, the internal space of the equipment cabinet 1 can be partitioned, for example, referring to... Figure 7 The charging device 100 may further include a partition 17, which is fixed inside the equipment cabinet 1. The partition 17 divides the internal space of the equipment cabinet 1 into a first chamber 171 and a second chamber 172. The first DC power distribution device 4 (including at least a first switching device 41) is located in the first chamber 171, which can also be referred to as the electrical chamber. The cooling device 10 (including at least a heat exchanger 101 and a heat exchange fan 102) is located in the second chamber 172, which can also be referred to as the cold source chamber. This separation of the cooling device 10 and the power distribution device (first DC power distribution device 4) within the equipment cabinet 1 achieves water and electricity isolation, reducing safety hazards.

[0092] exist Figure 7In the illustrated example, since the first DC power distribution device 4 is arranged above the cooling device 10, the first chamber 171 is located above the second chamber 172. In other examples, if the first DC power distribution device 4 is arranged below the cooling device 10, the first chamber 171 is located below the second chamber 172.

[0093] Further, in the case that the equipment cabinet 1 has a liquid inlet pipe 104 and a liquid outlet pipe 105 inside, referring back to Figure 6 , the liquid inlet pipe 104 and the liquid outlet pipe 105 both pass through the partition 17, the part of the liquid inlet pipe 104 located inside the first chamber 171 and the part of the liquid outlet pipe 105 located inside the first chamber 171 both communicate with the heat dissipation channel 91, and the part of the liquid inlet pipe 104 located inside the second chamber 172 and the part of the liquid outlet pipe 105 located inside the second chamber 172 both communicate with the heat exchange channel 1011 of the heat exchanger 101.

[0094] In some examples, referring back to Figure 5 and Figure 6 , the cooling device 10 further comprises an expansion tank 106 and a liquid level temperature sensor 107, wherein the expansion tank 106 communicates the heat dissipation channel 91 and the heat exchange channel 1011, and the expansion tank 106 is used to regulate the pressure of the pipeline (e.g. the liquid inlet pipe 104 and the liquid outlet pipe 105) between the heat exchange channel 1011 and the heat dissipation channel 91. The liquid level temperature sensor 107 extends into the expansion tank 106 and is used to detect the temperature and the liquid level of the liquid inside the expansion tank 106. In the case that the internal space of the equipment cabinet 1 is divided into the first chamber 171 and the second chamber 172, the expansion tank 106 is located inside the second chamber 172.

[0095] In some examples, in order to detect the water ingress inside the charging equipment 100, referring back to Figure 7 , the charging equipment 100 further comprises a water immersion sensor 110, which can be arranged at any suitable position inside the equipment cabinet 1. For example, the heat exchange fan 102 comprises a first heat exchange fan 1021 and a second heat exchange fan 1022, both of which comprise a motor (not shown in the drawings) and a fan blade (not shown in the drawings), the motor of the first heat exchange fan 1021 is capable of driving the fan blade of the first heat exchange fan 1021 to rotate, and the motor of the second heat exchange fan 1022 is capable of driving the fan blade of the second heat exchange fan 1022 to rotate, wherein the first heat exchange fan 1021 is located above the second heat exchange fan 1022, since the motor is easily damaged by water immersion, the height of the water immersion sensor 110 is not higher than the height of the motor of the second heat exchange fan 1022. In the case that the internal space of the equipment cabinet 1 is divided into the first chamber 171 and the second chamber 172, the water immersion sensor 110 is located inside the second chamber 172.

[0096] In the case where the cooling device 10 is arranged in the equipment cabinet 1, it is referred back to Figure 4 The second cable 7 in the equipment cabinet 1 is at least partially located at the side of the heat exchange fan 102 facing the first cabinet door 14 (with reference to the first cabinet door 14 in the closed state), that is, the part of the second cable 7 in the equipment cabinet 1 is located at the side of the heat exchange fan 102 facing the first cabinet door 14, for example, the part of the second cable 7 extending into the second chamber 172 is located at the side of the heat exchange fan 102 facing the first cabinet door 14. That is, the part of the second cable 7 in the equipment cabinet 1 is at least partially closer to the first opening 11, which is convenient for personnel to install, disassemble or maintain the second cable 7 from the first opening 11 after the first cabinet door 14 is opened.

[0097] In addition, in some examples, it is referred back to Figure 4 The charging device 100 can further include a control device 181, which includes a circuit board 1811 and a plurality of electronic components 1812 fixed on the circuit board 1811. The circuit board 1811 is fixed in the equipment cabinet 1, for example, the edge of the circuit board 1811 close to the first side wall 12 is fixed on the first side wall 12 through flanges and screws, and the edge of the circuit board 1811 close to the second side wall 13 is fixed on the second side wall 13 through flanges and screws; for another example, the circuit board 1811 is fixed on a plate structure, which is fixed on the first side wall 12 through flanges and screws at the edge close to the first side wall 12, and is fixed on the second side wall 13 through flanges and screws at the edge close to the second side wall 13. Wherein, the circuit board 1811 is located at the side of the first switch device 41 away from the first cabinet door 14, that is, the circuit board 1811 is arranged away from the first cabinet door 14 and the first opening 11, which reduces the interference of the circuit board 1811 on the maintenance of the first switch device 41 in the case of needing to maintain the first switch device 41. Moreover, since the circuit board 1811 is far away from the first opening 11, the possibility of damage to the circuit board 1811 can be reduced during the maintenance of other devices (devices other than the control device 181) in the equipment cabinet 1 by opening the first opening 11, thereby protecting the circuit board 1811.

[0098] It is referred back to Figure 4, one of the board faces of the circuit board 1811 faces the first cabinet door 14 (with reference to the first cabinet door 14 in the closed state), and a plurality of electronic components 1812 are fixed on the board face of the circuit board 1811 facing the first cabinet door 14. After the first cabinet door 14 is opened, one of the board faces of the circuit board 1811 faces the first opening 11, and a plurality of electronic components 1812 are fixed on the board face of the circuit board 1811 facing the first opening 11. In the case of needing to maintain the control device 181, after the first cabinet door 14 is opened, the plurality of electronic components 1812 on the circuit board 1811 face the person, so that the person can maintain the circuit board 1811 and the electronic components 1812 thereon. Among them, the plurality of electronic components 1812 include a control chip 1813, the control chip 1813 is electrically connected with the display screen 121, and the control chip 1813 is used to control the display screen 121. In addition, in some examples, the control chip 1813 can also be electrically connected with the first switching device 41, and the control chip 1813 is used to control the on-off of the first switching device 41, or the control chip 1813 can also be electrically connected with the driving pump 103, and the control chip 1813 is used to control.

[0099] In some examples, the control device 181 can include a plurality of circuit boards 1811, for example, the plurality of circuit boards 1811 include a main control board and a charging control board, and a plurality of electronic components 1812 are arranged on the main control board and the charging control board. The plurality of electronic components 1812 on the main control board include a control chip 1813, and the plurality of electronic components 1812 on the charging control board also include a control chip 1813. Among them, the main control board is used to control the input of the power supply 200, the display content of the display screen 121, etc., and the charging control board is used to control the charging of the charging connector 8 to the device to be charged.

[0100] In some examples, with reference to Figure 4 , the charging device 100 can also include a power supply device 125 (auxiliary power supply), the power supply device 125 is electrically connected with the power supply 200 and the circuit board 1811, and the power supply device 125 is used to convert the alternating current input by the power supply 200 into direct current to supply power to the circuit board 1811, that is, the power supply device 125 is a small power conversion device.

[0101] The power supply device 125 can be fixed at any suitable position, for example, with reference to Figure 5 , the power supply device 125 is located in the device cabinet 1 and connected on the first side wall 12, and the power supply device 125 can slide relative to the first side wall 12 in the direction approaching or away from the first cabinet door 14, that is, after the first cabinet door 14 is opened, the power supply device 125 can be pulled out in the width direction of the device cabinet 1. Among them, any connection structure capable of realizing the sliding of the power supply device 125 relative to the first side wall 12 can be used to connect the power supply device 125 and the first side wall 12. InFigure 5 In the shown example, the first side wall 12 is provided with a mounting shell 126, the mounting shell 126 is provided with a mounting opening 1261 facing the first opening 11, the power supply device 125 can be inserted into the mounting shell 126 from the mounting opening 1261 along the width direction of the equipment cabinet 1, and the power supply device 125 can also be pulled out of the mounting shell 126 from the mounting opening 1261 along the width direction of the equipment cabinet 1.

[0102] In other examples, the first side wall 12 is provided with a sliding groove, and the power supply device 125 is provided with a sliding block, the sliding block on the power supply device 125 can slide in the sliding groove on the first side wall 12, and the sliding block and the sliding groove are matched to realize the sliding connection between the power supply device 125 and the first side wall 12. The power supply device 125 is arranged in a form capable of sliding relative to the equipment cabinet 1, which facilitates the installation and disassembly of the power supply device 125.

[0103] After opening the first cabinet door 14, the power supply device 125 is pulled out, and the power supply device 125 is slid in a direction close to or away from the first opening 11, the first opening 11 is communicated with the outside space, in the case of disassembling the power supply device 125, the personnel pulls the power supply device 125 outward at the first opening 11, moves the power supply device 125 close to the first opening 11, and gradually pulls the power supply device 125 out of the equipment cabinet 1, so as to realize the disassembly of the power supply device 125. In the case of installing the power supply device 125, the power supply device 125 is pushed towards the inside of the equipment cabinet 1, and after the power supply device 125 is located in the equipment cabinet 1, the power supply device 125 is continuously pushed away from the first opening 11, so as to complete the installation of the power supply device 125.

[0104] Referring to Figure 4 and Figure 5 Since the first switch device 41 on the second side wall 13 needs to be connected with a cable, in the present application, the power supply device 125 is arranged on the first side wall 12, and the power supply device 125 can slide relative to the first side wall 12, which can not only disassemble the power supply device 125 through the first opening 11, but also reduces the influence of the power supply device 125 on the wiring of the first switch device 41, so that the internal layout of the equipment cabinet 1 is more reasonable.

[0105] In other examples, the power supply device 125 can also be arranged on the first cabinet door 14 or the second cabinet door 16.

[0106] In addition, referring to Figure 7The charging device 100 further comprises a second switching device 182 (for example, an air switch, a circuit breaker, a contactor, etc.), an input end of the second switching device 182 is electrically connected to the power supply 200 through a wire, and an output end of the second switching device 182 is electrically connected to the power supply device 125 through a wire, wherein the second switching device 182 is a power distribution device of the power supply device 125, and the second switching device 182 can control the on-off of the circuit between the power supply device 125 and the power supply 200.

[0107] In the case where the charging device 100 further comprises the second switching device 182, the second switching device 182 can also be fixed on the first side wall 12. However, in some examples, since there are many devices installed on the first side wall 12, the second switching device 182 can be fixed between the first side wall 12 and the second side wall 13 through a support. In some examples, the control device 181 and the second switching device 182 can also be integrated together, for example, refer to Figure 7 The charging device 100 can further comprise a first mounting seat 18 (for example, a metal plate, a support, etc.), the circuit board 1811 (one or more) of the control device 181 and the second switching device 182 are all fixed on the first mounting seat 18, the first mounting seat 18 is fixed in the device cabinet 1 (for example, the first mounting seat 18 is fixed on the first side wall 12 and the second side wall 13 through a flange or a support), and the first mounting seat 18 is located on the side of the first DC power distribution device 4 away from the first opening 11, so as to realize the integration of the control device 181 and the second switching device 182, facilitate the overall installation of the integrated control device 181 and the second switching device 182, for example, the control device 181 and the second switching device 182 are first fixed on the first mounting seat 18, and then the control device 181 and the second switching device 182 are fixed in the device cabinet 1 through the first mounting seat 18, thereby improving the production efficiency of the charging device 100.

[0108] In some examples, refer back to Figure 4 The charging device 100 further comprises an electric meter 142, the electric meter 142 is located in the device cabinet 1 and is fixed on the first cabinet door 14, and the electric meter 142 is used to detect the current value flowing through the input end or the output end of the first switching device 41, so as to realize the metering of the charged amount of the charging device 100. Wherein the electric meter 142 can detect the current value of the input end or the output end of the first switching device 41 in any suitable manner, for example, refer to Figure 4 The first DC power distribution device 4 of the charging device 100 further comprises a shunt 46, the shunt 46 can be a metal bar (for example, a copper bar or an aluminum bar), and the shunt 46 is fixed on the input metal bar 42 or the output metal bar 43 Figure 4The shunt 46 is fixed to the input metal row 42, and the shunt 46 is electrically connected to the ammeter 142. The ammeter 142 can determine the current flowing through the input metal row 42 by detecting the current flowing through the shunt 46.

[0109] In some examples, the display area of the ammeter 142 (for example, the screen of the ammeter 142) is exposed outside the equipment cabinet 1. For example, the first cabinet door 14 is provided with a window 1421 capable of exposing the screen of the ammeter 142. The screen of the ammeter 142 is exposed outside the equipment cabinet 1 through the window 1421 of the first cabinet door 14, so that personnel can observe the value of the ammeter 142. In addition, since the first cabinet door 14 where the window 1421 is located is adjacent to the first side wall 12 where the display screen 121 is located, it is also convenient for personnel to compare the data displayed by the display screen 121 and the data displayed by the ammeter 142. In other examples, the first cabinet door 14 can also not be provided with a window 1421 capable of exposing the screen of the ammeter 142, that is, the value of the ammeter 142 cannot be observed without opening the first cabinet door 14. In other examples, the charging device 100 can also not be provided with the ammeter 142.

[0110] In some examples, the charging device 100 further comprises a functional part 147 for realizing a specific function. For example, referring to Figure 4 The charging device 100 further comprises a turbulence fan 143 (belonging to the functional part 147). The turbulence fan 143 can be arranged at any suitable position. For example, the turbulence fan 143 is fixed to the first cabinet door 14, and the turbulence fan 143 is used to blow air into the equipment cabinet 1. For example, the turbulence fan 143 can blow air to the part of the equipment cabinet 1 where heat is relatively serious, so as to eliminate the local hot spots in the equipment cabinet 1 and make the temperature inside the equipment cabinet 1 more uniform.

[0111] The part of the equipment cabinet 1 where heat is relatively serious can be the part of the first cable 9 that cannot be cooled through the cooling channel 91. For example, referring to Figure 6 The first cable 9 comprises a protective sleeve 92, a positive electrode wire 93, and a negative electrode wire 94. The cooling channel 91 is located in the protective sleeve 92. The positive electrode wire 93 and the negative electrode wire 94 each have a part located in the protective sleeve 92 and in heat exchange with the cooling channel 91. The positive electrode wire 93 and the negative electrode wire 94 each have a part located outside the protective sleeve 92. The part of the positive electrode wire 93 located outside the protective sleeve 92 is connected to the output metal row 43 (positive electrode). The part of the negative electrode wire 94 located outside the protective sleeve 92 is connected to the output metal row 43 (negative electrode). Since the parts of the positive electrode wire 93 and the negative electrode wire 94 located outside the protective sleeve 92 cannot be cooled through the cooling channel 91, the parts of the positive electrode wire 93 and the negative electrode wire 94 located outside the protective sleeve 92 have relatively high heat.

[0112] Referring back to Figure 4The turbulence fan 143 can include a first turbulence fan 1431 located in the equipment cabinet 1 and fixed on the first cabinet door 14, and an air outlet end of the first turbulence fan 1431 faces the positive line 93 and the negative line 94 located outside the protective sleeve 92. The first turbulence fan 1431 blows air to the positive line 93 and the negative line 94 located outside the protective sleeve 92, and then the heat on the positive line 93 and the negative line 94 located outside the protective sleeve 92 is blown to the equipment cabinet 1, and then heat dissipation is achieved by heat exchange between the equipment cabinet 1 and the outside air.

[0113] In addition, in some examples, since the output metal row 43 generates heat for a long time, the air outlet end of the first turbulence fan 1431 can blow air to the output metal row 43 (both to the positive line 93 and the negative line 94 located outside the protective sleeve 92 and to the output metal row 43, or not to the positive line 93 and the negative line 94 located outside the protective sleeve 92 and only to the output metal row 43), and then the heat on the output metal row 43 is blown to the equipment cabinet 1, and then heat dissipation is achieved by heat exchange between the equipment cabinet 1 and the outside air.

[0114] In some examples, referring to Figure 4 The turbulence fan 143 can further include a second turbulence fan 1432 located in the equipment cabinet 1 and fixed on the first cabinet door 14, and an air outlet end of the second turbulence fan 1432 faces the first switching device 41, or the air outlet end of the second turbulence fan 1432 faces the input metal row 42. Since the input metal row 42 and the first switching device 41 generate heat for a long time, the second turbulence fan 1432 blows air to the input metal row 42 or the first switching device 41, and then the heat on the input metal row 42 and the first switching device 41 is blown to the equipment cabinet 1, and then heat dissipation is achieved by heat exchange between the equipment cabinet 1 and the outside air.

[0115] In Figure 4 the example shown, the ammeter 142 is located between the first turbulence fan 1431 and the second turbulence fan 1432. In other examples, only one turbulence fan 143 (for example, only the first turbulence fan 1431 or only the second turbulence fan 1432) can be provided in the equipment cabinet 1. In other examples, no turbulence fan 143 can be provided in the equipment cabinet 1.

[0116] In some examples, referring to Figure 4 The charging device 100 can further include an emergency stop button 144 (belonging to the functional part 147), which can control the first switching device 41 to disconnect the circuit between the power supply 200 and the charging connector 8 in the case of an emergency during use of the charging device 100. The emergency stop button 144 can be provided at any suitable position, and inFigure 4 In the shown example, the emergency stop button 144 is fixed on the first cabinet door 14, and the emergency stop button 144 is located on the side of the second turbulence fan 1432 facing away from the first turbulence fan 1431. In other examples, the emergency stop button 144 is fixed on the first cabinet door 14, and the emergency stop button 144 is located between the first turbulence fan 1431 and the second turbulence fan 1432. In other examples, the emergency stop button 144 can be fixed on the second cabinet door 16 in the case that the charging device 100 is provided with the second cabinet door 16. In other examples, the charging device 100 can also not include the emergency stop button 144.

[0117] Referring to Figure 4 The charging device 100 can also include a heating device 145 (belonging to the functional part 147) for heating the internal space of the equipment cabinet 1 in the case of low ambient temperature, so that part of the devices or components that are not resistant to low temperature (for example, the display screen 121) can operate normally. The heating device 145 can be any device capable of generating heat, for example, the heating device 145 includes a resistance wire and a fan, and the fan blows the heat generated by the resistance wire into the equipment cabinet 1. The heating device 145 can be arranged at any suitable position in the equipment cabinet 1, and the heating device 145 can be arranged on the first cabinet door 14 or the second cabinet door 16. Figure 4 In the shown example, the heating device 145 is fixed on the first cabinet door 14, and the heating device 145 is located on the side of the second turbulence fan 1432 facing away from the first turbulence fan 1431. In other examples, the heating device 145 is fixed on the first cabinet door 14, and the heating device 145 is located between the first turbulence fan 1431 and the second turbulence fan 1432. In other examples, the charging device 100 can also not include the heating device 145.

[0118] In the case that the personnel need to maintain the internal devices of the equipment cabinet 1, after opening the first cabinet door 14, the devices on the first cabinet door 14 will inevitably collide with the personnel or the maintenance tools. The heating device 145, the turbulence fan 143 or the emergency stop button 144 all belong to the functional part 147 which is not easy to be damaged. By arranging the functional part 147 (including at least one of the heating device 145, the turbulence fan 143 or the emergency stop button 144) on the first cabinet door 14, there is more space on the first side wall 12 and the second side wall 13 for the devices which are easy to be damaged (for example, the circuit board 1811, the electronic components 1812, etc.) to be installed. After opening the first cabinet door 14, some devices which are not easy to be damaged (for example, the functional part 147) are exposed outside with the first cabinet door 14, and some devices which are easy to be damaged are still located in the equipment cabinet 1, so that the layout of the devices in the equipment cabinet 1 is more reasonable, and the overall life of the charging device 100 is prolonged.

[0119] In addition, in the case of water accumulation on the top of the first cabinet door 14, a water blocking structure can also be provided on the first cabinet door 14, for example, referring to Figure 4 The charging device 100 can further include a baffle 146 fixed on the first cabinet door 14, the baffle 146 extending towards the internal space of the device cabinet 1 (in the state that the first cabinet door 14 is closed), and in the case that functional components 147 (including at least one of the heating device 145, the turbulence fan 143 or the emergency stop button 144) are provided on the first cabinet door 14, the baffle 146 is located above the functional components 147. For example, in the example shown in Figure 3 , the heating device 145, the electricity meter 142, the turbulence fan 143 and the emergency stop button 144 are provided on the first cabinet door 14, and the heating device 145, the electricity meter 142, the turbulence fan 143 and the emergency stop button 144 are all located below the baffle 146. After opening the first cabinet door 14, due to the existence of the baffle 146, the liquid dripping on the top of the first cabinet door 14 can be blocked to a certain extent, reducing the possibility of short circuit between multiple devices on the first cabinet door 14 caused by the liquid dripping on the top of the first cabinet door 14. In some other examples, the baffle 146 can also not be provided on the first cabinet door 14.

[0120] In some examples, referring to Figure 11 The charging device 100 can further include a display lamp 19 located above the display screen 121, wherein the display lamp 19 is used to display the charging state of the charging device 100, for example, the display lamp 19 expresses the information of charging, standby, failure, reservation, charged amount, etc. through the change of color or shape.

[0121] In addition, Figure 11 Two other positions of the gun seat 124 are exemplarily shown, in the example shown in (a) in Figure 11 , the gun seat 124 is fixed on the first cabinet door 14, and in the example shown in (b) in Figure 12 , the gun seat 124 is fixed on the second cabinet door 16.

[0122] In some examples, the charging device 100 can further include a gun line management device 120, ​ An example of the structure of the gun line management device 120 is exemplarily shown, wherein the gun line management device 120 is fixed on the top of the device cabinet 1, and the gun line management device 120 can lift the first cable 9 and share part of the weight of the first cable 9, so as to make the process of using the charging connector 8 by the user more labor-saving.

[0123] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A charging device, characterized by, The charging device comprises: a device cabinet comprising first and second oppositely arranged side walls; a first cabinet door connected to the first or second side wall; a display screen fixed to the first side wall, with a display area exposed outside the device cabinet; a first switching device located inside the device cabinet and fixed to the second side wall, with an input end electrically connected to a power supply; a charging connector located outside the device cabinet and configured to be connected to a device to be charged; a first cable, the second side wall having a cable outlet hole for the first cable to pass through, one part of the first cable being located inside the device cabinet and electrically connected to an output end of the first switching device, and another part of the first cable being located outside the device cabinet and electrically connected to the charging connector.

2. The charging device according to claim 1, characterized in that, The charging device further comprises a cooling device located inside the device cabinet, the cooling device comprising a heat exchanger and a heat exchanger fan, the first cable having a heat dissipation channel, a heat dissipation channel of the heat exchanger being in communication with the heat dissipation channel, the heat exchanger fan being located on a side of the heat exchanger facing the first cabinet door, the first cabinet door being provided with a first air outlet facing the heat exchanger fan.

3. The charging device according to claim 2, characterized in that, The charging device further comprises a second cable, one part of the second cable being located outside the device cabinet and configured to be electrically connected to the power supply, and another part of the second cable being located inside the device cabinet and electrically connected to the input end of the first switching device; The second cable inside the device cabinet is at least partially located on a side of the heat exchanger fan facing the first cabinet door.

4. The charging apparatus according to claim 2, characterized by, The charging device further comprises a second cabinet door oppositely arranged with the first cabinet door, the second cabinet door being connected to the first or second side wall, the heat exchanger being located on a side of the heat exchanger fan facing the second cabinet door, and the second cabinet door being provided with a second air outlet facing the heat exchanger.

5. The charging device according to any one of claims 2-4, characterized in that, The charging device further comprises a partition fixed inside the device cabinet, the partition dividing an internal space of the device cabinet into a first chamber and a second chamber, the first switching device being located in the first chamber, and the heat exchanger and the heat exchanger fan being located in the second chamber; The cooling device further comprises a liquid inlet pipe and a liquid outlet pipe, both the liquid inlet pipe and the liquid outlet pipe passing through the partition, a part of the liquid inlet pipe located in the first chamber and a part of the liquid outlet pipe located in the first chamber being in communication with the heat dissipation channel, and a part of the liquid inlet pipe located in the second chamber and a part of the liquid outlet pipe located in the second chamber being in communication with the heat dissipation channel of the heat exchanger.

6. The charging device according to any one of claims 2-4, characterized in that, The first switching device is located above the heat exchanger and the heat exchanger fan.

7. The charging device according to any one of claims 1 to 4, characterized by, The charging device further comprises a control device, the control device comprises a circuit board and a plurality of electronic components, the circuit board is fixed in the device cabinet, one side of the circuit board away from the first cabinet door, one plate surface of the circuit board faces the first cabinet door, and the plurality of electronic components are fixed on the plate surface of the circuit board facing the first cabinet door.

8. The charging apparatus according to claim 7, characterized by, The charging device further comprises a power supply device, the power supply device is electrically connected with the power supply and the circuit board, and the power supply device is used for converting the power input by the power supply and outputting the converted power to the circuit board to supply power to the circuit board. The power supply device is located in the device cabinet and connected to the first side wall, and the power supply device can slide relative to the first side wall in the direction close to or away from the first cabinet door.

9. The charging apparatus according to claim 8, characterized by, The charging device further comprises a second switch device and a first mounting seat, the input end of the second switch device is electrically connected with the power supply, and the output end of the second switch device is electrically connected with the power supply device. The circuit board and the second switch device are fixed on the first mounting seat, the first mounting seat is fixed in the device cabinet, and the first mounting seat is located on the side of the first switch device away from the first cabinet door.

10. The charging device according to any one of claims 1-4, characterized by, The charging device further comprises a second mounting seat, an input metal row and an output metal row, the second mounting seat is fixed on the second side wall, the first switch device, the input metal row and the output metal row are fixed on the second mounting seat, the input end of the first switch device is connected with the power supply through the input metal row, the output metal row is connected with the output end of the first switch device, and the part of the first cable in the device cabinet is connected with the output metal row.

11. The charging device according to any one of claims 1 to 4, characterized by, The charging device further comprises an ammeter, the ammeter is located in the device cabinet and fixed on the first cabinet door, the first cabinet door has a window, and a display area of the ammeter is exposed outside the device cabinet through the window.

12. The charging device according to any one of claims 1-4, characterized by, The charging device further comprises a functional part, the functional part comprises at least one of a heating device, a spoiler fan or an emergency stop button, the functional part is located in the device cabinet and fixed on the first cabinet door. The heating device is used for heating the internal space of the device cabinet, the spoiler fan is used for blowing air into the device cabinet, and the emergency stop button is used for controlling the first switch device to disconnect the circuit between the power supply and the charging connector.

13. The charging apparatus according to claim 12, characterized by, The charging device further comprises a baffle, the baffle is fixed on the first cabinet door and located above the functional part.

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