Charging System

Abstract

The present application relates to a charging system. The system includes: a phase-shifting transformer, wherein the first end of the phase-shifting transformer is connected to a power source, and the second end of the phase-shifting transformer is connected to a conversion module; the phase-shifting transformer is used to convert the first target electricity received from the power source into the second target electricity, and transmit the second target electricity to the conversion module; the conversion module is used to convert the second target electricity into the third target electricity, and transmit the third target electricity to the switching unit; the switching unit is connected to the conversion module, and is used to receive the third target electricity from the conversion module, and output the third target electricity to the charging terminal. The present charging system can be directly connected to a high-voltage power grid, and convert high-voltage alternating current into electricity suitable for charging electric vehicles, which improves the power density and charging conversion efficiency of the charging system, reduces the charging power loss, reduces the complexity of the charging system architecture, and reduces the operation and maintenance cost of the charging system.

Description

Technical Field

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

[0002] With the rapid popularization of electric vehicles, the demand for charging facilities continues to increase, especially high-power, high-efficiency, and low-cost charging systems have become an inevitable trend in the development of the industry. In electric vehicle charging systems, distribution transformers are usually used to convert high-voltage AC power into low-voltage DC power. In order to convert the high-voltage AC power of the power grid into DC power suitable for electric vehicle charging, high-voltage direct-drop charging systems came into being.

[0003] In the traditional high-voltage direct-drop charging system, a three-phase interleaved three-level VIENNA topology is used to convert the high-voltage AC power of the power grid into DC power suitable for charging electric vehicles.

[0004] However, in traditional high-voltage direct-step charging systems, multiple modules are connected in series or in parallel to achieve the required power output, which increases the complexity of the high-voltage direct-step charging system architecture, thereby increasing the difficulty of installation and commissioning of the high-voltage direct-step charging system and increasing operation and maintenance costs. Summary of the invention

[0005] Based on this, it is necessary to provide a charging system that can reduce the complexity of the direct-drop charging system architecture and reduce operation and maintenance costs in response to the above technical problems.

[0006] In a first aspect, the present application provides a charging system, the system comprising:

[0007] A phase-shifting transformer, wherein a first end of the phase-shifting transformer is connected to a power source, and a second end of the phase-shifting transformer is connected to a conversion module; the phase-shifting transformer is used to convert a first target electricity received from the power source into a second target electricity, and transmit the second target electricity to the conversion module;

[0008] A conversion module, used for converting the second target electricity into a third target electricity, and transmitting the third target electricity to the switching unit;

[0009] The switching unit is connected to the conversion module, and is used to receive the third target electricity from the conversion module and output the third target electricity to the charging terminal.

[0010] In one embodiment, the system further comprises:

[0011] The heat dissipation module includes a top ventilation duct, a first heat dissipation unit and a second heat dissipation unit. The top ventilation duct is used to receive hot air from the first heat dissipation unit and the second heat dissipation unit, and discharge the hot air out of the charging system.

[0012] In one embodiment, the heat dissipation module further includes:

[0013] The heat exchange system is connected to the top ventilation duct, the first heat dissipation unit and the second heat dissipation unit, and is used to pre-treat the hot air of the first heat dissipation unit and the second heat dissipation unit to obtain pre-treated hot air, and transmit the pre-treated hot air to the top ventilation duct.

[0014] In one embodiment, the first heat dissipation unit includes:

[0015] The transformer air inlet is used to provide cold air to the phase-shifting transformer, thereby cooling the phase-shifting transformer;

[0016] The transformer air outlet is used to discharge the hot air of the phase-shifting transformer to the top ventilation duct.

[0017] In one embodiment, the second heat dissipation unit includes:

[0018] The conversion module air inlet includes an upper conversion module air inlet and a lower conversion module air inlet, and the conversion module air inlet is used to provide cold air to the conversion module, thereby cooling the conversion module;

[0019] The conversion module air outlet includes an upper air outlet of the left conversion module, a lower air outlet of the left conversion module, an upper air outlet of the right conversion module and a lower air outlet of the right conversion module. The conversion module air outlet is used to discharge the hot air of the conversion module to the top ventilation duct.

[0020] In one embodiment, the heat dissipation module further includes:

[0021] The transformer heat sink is connected to the phase-shifting transformer and is used for dissipating heat for the phase-shifting transformer.

[0022] In one embodiment, the system further comprises:

[0023] Temporary power supply, located inside the charging system, is used to provide backup power for the charging system.

[0024] In one embodiment, the system further comprises:

[0025] A base, located at the bottom of the charging system, used to provide support for the charging system;

[0026] The roof is located on the top of the charging system and is used to provide external protection for the charging system.

[0027] In one embodiment, the system further comprises:

[0028] Status light, used to display the operating status of the charging system.

[0029] In one embodiment, the system further comprises:

[0030] The emergency stop switch is used to ensure that the charging system stops quickly when an emergency occurs in the charging system.

[0031] The above-mentioned charging system includes: a phase-shifting transformer, wherein the first end of the phase-shifting transformer is connected to the power supply, and the second end of the phase-shifting transformer is connected to the conversion module; the phase-shifting transformer is used to convert the first target electricity received from the power supply into the second target electricity, and transmit the second target electricity to the conversion module; the conversion module is used to convert the second target electricity into the third target electricity, and transmit the third target electricity to the switching unit; the switching unit is connected to the conversion module, and is used to receive the third target electricity from the conversion module, and output the third target electricity to the charging terminal. In the present application, the charging system can be directly connected to the high-voltage power grid through the phase-shifting transformer, the conversion module and the switching unit, and the high-voltage AC power can be converted into electricity suitable for charging electric vehicles, which improves the power density of the charging system, reduces the complexity of the charging system architecture, and reduces the operation and maintenance cost of the charging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the internal structure of a charging system in one embodiment;

[0034] Figure 2 It is a schematic diagram of the left part of the charging system in one embodiment;

[0035] Figure 3 It is a schematic diagram of the right part of the charging system in one embodiment;

[0036] Figure 4 It is a schematic diagram of the external structure of a charging system in another embodiment;

[0037] Figure 5 FIG. 4 is a schematic diagram of the structure of a charging terminal in an embodiment.

[0038] 10. Charging system; 20. Charging terminal; 100. Phase-shifting transformer; 200. Conversion module; 300. Switching unit; 400. Cooling module; 500. Temporary power supply; 600. Base; 700. Ceiling; 800. Status light; 900. Emergency stop switch; 801. Machine indicator light; 802. Left power conversion cabinet indicator light; 803. Right power conversion cabinet indicator light; 901. Machine emergency stop button; 902. Left power conversion cabinet emergency stop button; 903. Right power conversion cabinet emergency stop button;

[0039] 401, top ventilation duct; 402, first heat dissipation unit; 404, heat exchange system; 405, transformer radiator; 406, top left air outlet; 407, top right air outlet;

[0040] 4021, transformer air inlet; 4022, transformer air outlet; 4031, conversion module air inlet; 4032, conversion module air outlet; 4311, conversion module upper air inlet; 4312, conversion module lower air inlet; 4321, left conversion module upper air outlet; 4322, left conversion module lower air outlet; 4323, right conversion module upper air outlet; 4324, right conversion module lower air outlet. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0047] In an exemplary embodiment, see Figures 1 to 5 , a charging system 10 is provided, Figure 1 is a schematic diagram of the internal structure of the charging system 10, Figure 2 It is a schematic diagram of the left part of the charging system 10. Figure 3 It is a schematic diagram of the right part of the charging system 10. Figure 4 is a schematic diagram of the external structure of the charging system 10, Figure 5Schematic diagram of the structure of the charging terminal 20. The charging system 10 includes: a phase-shifting transformer 100, a first end of the phase-shifting transformer 100 is connected to a power source, and a second end of the phase-shifting transformer 100 is connected to a conversion module 200; the phase-shifting transformer 100 is used to convert a first target electricity received from a power source into a second target electricity, and transmit the second target electricity to the conversion module 200; the conversion module 200 is used to convert the second target electricity into a third target electricity, and transmit the third target electricity to the switching unit 300; the switching unit 300 is connected to the conversion module 200, and is used to receive the third target electricity from the conversion module 200, and output the third target electricity to the charging terminal 20.

[0048] The conversion module 200 is an AC / DC (Alternating Current / Direct Current, AC / DC) high-efficiency module, and the switching unit 300 is a power switching unit. The power supply is a high-voltage AC power supply, which can be AC10kV (10 kilovolts AC). The first target voltage is AC10kV, the second target voltage is AC460V, and the third target voltage is DC200-1000V (200 to 1000 volts DC).

[0049] Optionally, the phase-shifting transformer 100 is arranged on the base 600 inside the charging system 10, close to the front area of ​​the charging system 10, and the bottom of the phase-shifting transformer 100 can be fixed on the base 600 through a support frame or a mounting plate, and a shock-absorbing pad can be arranged at the bottom of the phase-shifting transformer 100 to reduce the vibration generated during operation. The first end of the phase-shifting transformer 100 is connected to the grid power supply, which is used to connect the first target power (AC10kV) from the grid; the second end of the phase-shifting transformer 100 is connected to the conversion module 200, which is used to convert the first target power (AC10kV) received by its first end into the second target power (low-voltage alternating current, AC460V) through the phase-shifting transformer technology. Among them, the second end of the phase-shifting transformer 100 can be connected to the conversion module 200 through a high-voltage low-loss cable, which can ensure the stable transmission of AC460V low-voltage alternating current. The shape of the phase-shifting transformer 100 is not specifically limited here, and can be a rectangular parallelepiped or a cube. The shell of the phase-shifting transformer 100 can be made of metal and have an insulating paint coating. A heat sink may be installed at the bottom or side of the phase-shifting transformer 100 for efficient heat dissipation of the phase-shifting transformer 100 . High-voltage input terminals and low-voltage output terminals may be provided on both sides thereof, and the output terminals are provided with insulating protective covers.

[0050] The conversion module 200 is located in the middle of the charging system 10, close to the heat dissipation duct area formed by the upper air outlet 4321 of the left conversion module, the lower air outlet 4322 of the left conversion module, the upper air outlet 4323 of the right conversion module, and the lower air outlet 4324 of the right conversion module of the charging system 10, which is convenient for heat dissipation of the conversion module 200. The input end of the conversion module 200 is connected to the output end of the phase-shifting transformer 100, and the output end of the conversion module 200 is connected to the switching unit 300. The conversion module 200 is used to rectify the second target power (AC460V low-voltage alternating current) output by the phase-shifting transformer 100 into the third target power (DC200-1000V direct current). The shape of the conversion module 200 is not specifically limited here, and can be a flattened rectangular parallelepiped shape. The shell of the conversion module 200 is made of metal material, and the surface of the conversion module 200 can be provided with a plurality of heat dissipation holes or heat sinks to support efficient heat discharge of the conversion module 200. The conversion module 200 can provide efficient power conversion, reduce energy loss, and improve the overall efficiency of the charging system 10 .

[0051] The switching unit 300 can be arranged at the rear side of the charging system 10 and close to the charging terminal 20. A maintenance space can be reserved at the front of the switching unit 300 to facilitate the maintenance of the switching unit 300. The input end of the switching unit 300 can be connected to the output end of the conversion module 200 through a cable, and the output end of the switching unit 300 is connected to the charging terminal 20. The switching unit 300 is used to receive the third target power (DC200-1000V direct current) from the conversion module 200, and control the output of direct current according to demand to achieve efficient interaction with the charging terminal 20. The switching unit 300 can also provide functions such as overload protection and switching control to ensure the safety and reliability of the charging process. The shape of the switching unit 300 is not specifically limited here, and can be in the shape of a cube or a cuboid, and the volume is usually small.

[0052] Exemplarily, the charging system 10 uses a phase-shifting transformer 100 as an input device. The first end of the phase-shifting transformer 100 is connected to the input end of the power grid, receives AC10kV high-voltage alternating current (first target power), and steps down the first target power to AC460V low-voltage alternating current (second target power), which is then output to the conversion module 200 through the second end of the phase-shifting transformer 100. The conversion module 200 rectifies and converts the second target power into DC200-1000V direct current (third target power). The output end of the conversion module 200 is connected to the input end of the switching unit 300 through a cable. The switching unit 300 receives the third target power and controls the output of the third target power according to the charging demand, and is finally connected to the charging terminal 20 through the output end of the switching unit 300. The charging terminal 20 is further connected to the charging vehicle to realize the interaction and management of the charging process of the charging system 10.

[0053] In this embodiment, the charging system 10 realizes two-stage energy conversion from high-voltage AC (i.e., the first target electricity) to low-voltage AC (i.e., the second target electricity) and then to DC (i.e., the third target electricity) through the cooperation of the phase-shifting transformer 100 and the conversion module 200, thereby reducing unnecessary energy loss, improving the overall conversion efficiency of the system, and avoiding the complexity of multi-stage equipment. Moreover, the charging system 10 can be directly connected to the 10kV high-voltage power grid without the need for additional step-down facilities, which significantly simplifies the design and deployment of the charging system 10 and reduces the complexity of the charging system 10. Furthermore, the charging system 10 improves the overall conversion efficiency of the system, while avoiding the complexity of multi-stage equipment, can reduce the maintenance frequency and maintenance cost of the charging system 10, and can reduce the long-term operating cost caused by the energy loss of the charging system 10.

[0054] In addition, the charging system 10 can be directly connected to the high-voltage power grid through the cooperation of the phase-shifting transformer 100 and the conversion module 200, so that the charging system 10 has electromagnetic isolation, reactive power compensation and harmonic suppression functions, and realizes high-power flexible charging of the charging system 10. The charging system 10 supports dual-gun charging, providing a one-stop distribution and charging solution, which increases the charging efficiency of the charging system 10 to more than 95%, and can also reduce the cost of the charging system 10 by more than 10%, reduce the difficulty of operation and maintenance of the charging system 10, and improve the stability of the charging system 10, ensuring that the charging process is safe and reliable. Furthermore, the cooperation of the phase-shifting transformer 100 and the conversion module 200 can shorten the construction period of the charging station project and reduce the floor space. The charging system 10 can also improve the charging efficiency, greatly shorten the charging time of electric vehicles, and bring convenience to users.

[0055] In an exemplary embodiment, the system also includes: a heat dissipation module 400, including a top ventilation duct 401, a first heat dissipation unit 402 and a second heat dissipation unit, the top ventilation duct 401 is used to receive hot air from the first heat dissipation unit 402 and the second heat dissipation unit, and discharge the hot air out of the charging system 10.

[0056] Exemplarily, the charging system 10 includes a heat dissipation module 400, which includes a top ventilation duct 401, a first heat dissipation unit 402, and a second heat dissipation unit. The top ventilation duct 401 is located at the top of the charging system 10, and is used to collect and discharge hot air generated during the operation of the charging system 10 to ensure the normal operation and efficient heat dissipation of the internal equipment of the charging system 10. The first heat dissipation unit 402 is connected to the phase-shifting transformer 100, and the first heat dissipation unit 402 is used to dissipate the heat generated by the phase-shifting transformer 100 during operation, thereby avoiding the influence of high temperature on the performance of the phase-shifting transformer 100. The phase-shifting transformer 100 inevitably generates a large amount of heat through the high-voltage current conversion process, and the first heat dissipation unit 402 can quickly and effectively absorb the heat and discharge it outside the system through the top ventilation duct 401, thereby maintaining the safe temperature of the charging system 10. The second heat dissipation unit (not shown in the figure) is used to dissipate the heat of the conversion module 200, and the conversion module 200 generates heat due to efficient power processing during the conversion process of AC to DC. The second heat dissipation unit is used to quickly transfer the heat generated by the conversion module 200 to the top ventilation duct 401 and discharge it outside the charging system 10 .

[0057] In this embodiment, the first heat dissipation unit 402 and the second heat dissipation unit respectively concentrate the heat of the phase-shifting transformer 100 and the conversion module 200 through the convergence effect of the top ventilation duct 401, so that an independent heat dissipation loop is formed inside the charging system 10, which not only improves the heat dissipation efficiency but also avoids the accumulation of heat inside the device, thereby ensuring the long-term stable and reliable operation of the charging system 10 and reducing the frequency and cost of maintenance of the charging system 10.

[0058] In an exemplary embodiment, the first heat dissipation unit 402 includes: a transformer air inlet 4021 for providing cold air to the phase-shifting transformer 100 to cool the phase-shifting transformer 100; and a transformer air outlet 4022 for discharging hot air from the phase-shifting transformer 100 to the top ventilation duct 401.

[0059] The first heat dissipation unit 402 is used to effectively provide cooling for the phase-shifting transformer 100 to ensure that the phase-shifting transformer 100 will not be overheated during operation, resulting in reduced efficiency or damage. The first heat dissipation unit 402 includes a transformer air inlet 4021 and a transformer air outlet 4022 .

[0060] Optionally, the transformer air inlet 4021 is used to introduce cold air from outside the charging system 10, so that the cold air enters the charging system 10 through the transformer air inlet 4021, and flows into the heat dissipation area of ​​the phase-shifting transformer 100, thereby cooling the phase-shifting transformer 100, ensuring that the phase-shifting transformer 100 can be maintained within an ideal operating temperature range during operation. Furthermore, through the continuous circulation of the cold air, the internal temperature of the phase-shifting transformer 100 is effectively controlled, avoiding overheating of the phase-shifting transformer 100, thereby improving the working efficiency and life of the phase-shifting transformer 100. The transformer air outlet 4022 is used to discharge the hot air generated by the phase-shifting transformer 100 during operation, and the hot air is guided to the top ventilation duct 401 through the transformer air outlet 4022, so that the hot air is quickly discharged from the charging system 10.

[0061] In this embodiment, through the coordinated operation of the transformer air inlet 4021 and the transformer air outlet 4022, the charging system 10 realizes the introduction of cold air and the discharge of hot air, and provides an efficient heat dissipation channel for the phase-shifting transformer 100, which can not only effectively reduce the operating temperature of the phase-shifting transformer 100, but also improve the heat dissipation efficiency of the entire charging system 10, so that the charging system 10 can continue to operate stably under high power load, avoiding the risk of failure caused by overheating of the charging system 10.

[0062] In an exemplary embodiment, the heat dissipation module 400 further includes: a transformer heat sink 405 connected to the phase-shifting transformer 100 for dissipating heat for the phase-shifting transformer 100 .

[0063] Exemplarily, the phase-shifting transformer 100 is used to convert high voltage alternating current (AC10kV) into lower voltage alternating current (AC460V). During this process, the phase-shifting transformer 100 consumes a large amount of electrical energy and converts it into heat. If the phase-shifting transformer 100 cannot dissipate heat in time, overheating may cause aging or damage to the internal components of the phase-shifting transformer 100, affecting the long-term operation and safety of the charging system 10. Therefore, a transformer radiator 405 can be provided on one side of the phase-shifting transformer 100. The transformer radiator 405 is connected to the phase-shifting transformer 100 to absorb heat from the heat source area of ​​the phase-shifting transformer 100 and dissipate heat for the phase-shifting transformer 100 to ensure that the phase-shifting transformer 100 will not affect the stability and working efficiency of the charging system 10 due to excessive temperature during operation. The transformer radiator 405 can be a forced air cooling radiator or an oil cooling radiator, etc.

[0064] In this embodiment, the heat dissipation module 400 also includes a transformer heat sink 405, which can effectively reduce the operating temperature of the phase-shifting transformer 100, improve the safety and stability of the phase-shifting transformer 100, thereby reducing the failure rate of the phase-shifting transformer 100, reducing the maintenance cost of the charging system 10, and ensuring that the charging system 10 still maintains excellent performance under long-term, high-load operating conditions.

[0065] In an exemplary embodiment, the second heat dissipation unit includes: a conversion module air inlet 4031, including an upper air inlet 4311 of the conversion module and a lower air inlet 4312 of the conversion module, the conversion module air inlet 4031 is used to provide cold air to the conversion module 200, thereby cooling the conversion module 200; a conversion module air outlet 4032, including an upper air outlet 4321 of the left conversion module, a lower air outlet 4322 of the left conversion module, an upper air outlet 4323 of the right conversion module and a lower air outlet 4324 of the right conversion module, the conversion module air outlet 4032 is used to discharge the hot air of the conversion module 200 to the top ventilation duct 401.

[0066] The second heat dissipation unit is used to dissipate heat for the conversion module 200. The second heat dissipation unit is composed of a plurality of air inlets and air outlets, and is used to effectively cool and remove heat, thereby ensuring that the conversion module 200 remains within an optimal operating temperature range during operation.

[0067] Optionally, the conversion module air inlet 4031 includes an upper conversion module air inlet 4311 and a lower conversion module air inlet 4312. The upper conversion module air inlet 4311 is located in the upper region of the conversion module 200, and cold air can enter the conversion module 200 from the upper conversion module air inlet 4311 to absorb the heat generated inside the conversion module 200. The lower conversion module air inlet 4312 is located in the bottom region of the conversion module 200, and cold air can enter the conversion module 200 from the lower conversion module air inlet 4312 to absorb the heat generated inside the conversion module 200. The upper conversion module air inlet 4311 and the lower conversion module air inlet 4312 can be located at different vertical positions of the conversion module 200 to ensure that cold air can enter the conversion module 200 from two different directions of the conversion module 200, forming a convection flow of cold air, and ensuring that the cold air can evenly cover the conversion module 200, thereby maximizing the cooling effect on the conversion module 200.

[0068] The conversion module air outlet 4032 includes an upper air outlet 4321 of the left conversion module, a lower air outlet 4322 of the left conversion module, an upper air outlet 4323 of the right conversion module, and a lower air outlet 4324 of the right conversion module, which are respectively located in the upper left region, the lower left region, the upper right region, and the lower right region of the conversion module 200. The conversion module air outlet 4032 is distributed on the left and right sides of the conversion module 200, and is respectively located in the upper and lower parts of the conversion module 200. Through this design, hot air can flow out of the conversion module 200 from four different directions, ensuring that heat can be evenly discharged from different regions of the conversion module 200, and avoiding the accumulation of hot air on one side to cause local overheating.

[0069] In this embodiment, the conversion module air inlet 4031 is used to achieve simultaneous air intake at the upper and lower parts, which can increase the efficiency of air flow and allow cold air to enter the conversion module 200 from different directions at the same time, thereby ensuring that the cold air can evenly cover all parts of the module, reduce the phenomenon of excessively high local temperatures, and avoid overheating problems caused by heat accumulation. If there is only a single air inlet, the cold air may not be able to effectively cover the entire conversion module 200, resulting in poor heat dissipation in certain areas, thereby affecting the stability of the module. The conversion module air outlet 4032 can help hot air to be effectively discharged from different areas, ensuring that the heat of the entire module is evenly taken away. If there is only a single air outlet, the hot air in certain areas may not be discharged in time, resulting in heat accumulation, affecting the normal operation of the conversion module 200. At the same time, when the charging system 10 needs to increase the load or work in a higher power mode, the multiple air outlet design provides more heat dissipation channels, so that the charging system 10 can cope with higher heat loads, ensuring that the charging system 10 can work stably without being affected by excessive heat.

[0070] In an exemplary embodiment, the heat dissipation module 400 also includes: a heat exchange system 404, which is connected to the top ventilation duct 401, the first heat dissipation unit 402 and the second heat dissipation unit, and is used to pre-treat the hot air of the first heat dissipation unit 402 and the second heat dissipation unit to obtain pre-treated hot air, and transmit the pre-treated hot air to the top ventilation duct 401.

[0071] The heat dissipation module 400 also includes a heat exchange system 404, which is connected to the top ventilation duct 401, the first heat dissipation unit 402 and the second heat dissipation unit, and is used to pre-treat the hot air passing through the first heat dissipation unit 402 and the second heat dissipation unit. Specifically, when the hot air is discharged from the phase-shifting transformer 100 through the first heat dissipation unit 402 and from the conversion module 200 through the second heat dissipation unit, the hot air will be processed by the heat exchange system 404 before entering the top ventilation duct 401. The heat exchange system 404 exchanges heat with the external cold air or the low-temperature part of the air to reduce the temperature of the hot air. Through this pretreatment process, the temperature of the hot air is significantly reduced, so that after entering the top ventilation duct 401, the hot air will not generate an excessively high temperature burden on the entire charging system 10. The pretreated hot air, after the temperature is reduced, becomes more suitable for being discharged from the charging system 10, thereby effectively protecting other sensitive components in the charging system 10 and avoiding overheating.

[0072] In this embodiment, the heat exchange system 404 is used to pre-treat the hot air of the first heat dissipation unit 402 and the second heat dissipation unit to obtain pre-treated hot air, rather than directly discharging the hot air, which can avoid the impact of hot air on the outside or surrounding environment of the charging system 10, especially in the high-density heat dissipation environment of the charging system 10, it can prevent the hot air from flowing back into the charging system 10, thereby causing the heat load to be unable to be effectively dissipated, affecting the heat dissipation efficiency of the charging system 10. The pre-treated hot air is transmitted to the top ventilation duct 401, which can reduce the overall heat dissipation burden of the charging system 10, ensure that the inside of the charging system 10 can be maintained within the normal operating temperature range, and further improve the service life and operation efficiency of the charging system 10. In addition, the present application forms an independent air duct through the convergence of the first heat dissipation unit 402 and the second heat dissipation unit through the top ventilation duct 401. The independent air duct and the heat exchange system 404 enable the overall charging system 10 to reach IP65 (protection level standard), and can achieve high anti-pollution and high reliability of the charging system 10.

[0073] In an exemplary embodiment, the system further includes: a temporary power supply 500 located inside the charging system 10 and configured to provide backup power for the charging system 10 .

[0074] The temporary power supply 500 is an uninterruptible power supply (UPS).

[0075] Optionally, the temporary power supply 500 is used to provide a backup power supply for the charging system 10 to ensure that the charging system 10 can continue to operate normally when the main power supply fails or the power is cut off. The temporary power supply 500 can be composed of a battery pack, a charging circuit, an inverter, etc., and can realize an automatic switching function. When the main power supply of the charging system 10 fails or the voltage fluctuates, the temporary power supply 500 will immediately take over the power supply to ensure the continuous operation of the charging system 10, avoid the power failure affecting the charging process or causing the charging system 10 to shut down, and can improve the stability and reliability of the charging system 10.

[0076] In this embodiment, the temporary power supply 500 can protect sensitive electronic equipment in the charging system 10 from external interference such as power fluctuations and lightning, extend the service life of the charging system 10, reduce the maintenance cost of the charging system 10, and thereby ensure the stability and reliability of the charging system 10, further enhancing the user experience.

[0077] In an exemplary embodiment, the system further includes: a base 600 located at the bottom of the charging system 10 for providing support for the charging system 10 ; and a roof 700 located at the top of the charging system 10 for providing external protection for the charging system 10 .

[0078] Exemplarily, the base 600 is located at the bottom of the charging system 10. The base 600 can be closely matched with the phase-shifting transformer 100, the conversion module 200, and the switching unit 300 through structural connection to ensure the balance of the center of gravity of all components inside the charging system 10, and is used to provide a solid support for the charging system 10 to prevent the charging system 10 from tilting or becoming unstable during operation, thereby ensuring the overall structural stability of the charging system 10. The base 600 can be made of durable metal or other solid materials to carry the various components in the charging system 10. The base 600 may also include a fixing device or a tripod to firmly fix the entire charging system 10 on the ground or a platform, thereby improving the shock resistance and stability of the charging system 10.

[0079] The roof 700 is located on the top of the charging system 10 and is used to provide external protection for the charging system 10 to prevent sensitive devices inside the charging system 10 from being affected by external environmental factors (such as rain, dust, direct sunlight, etc.). The roof 700 can be made of waterproof, dustproof and high temperature resistant materials, which can effectively prevent external weather conditions from causing damage to the electrical devices inside the charging system 10, ensuring that the charging system 10 can work stably in various environments.

[0080] The ceiling 700 and the base 600 can be connected by a frame structure, bolted or welded, so that the base 600 and the ceiling 700 jointly support the overall structure of the charging system 10, ensuring that the various modules and components inside the charging system 10 can operate safely and reliably. In addition, the structural design of the ceiling 700 can also provide protection and isolation for the charging system 10, preventing external objects or personnel from contacting the electrical components inside the charging system 10, thereby improving the safety of the equipment.

[0081] In this embodiment, the ceiling 700 and the base 600 can ensure the stability of the overall structure of the charging system 10, and can ensure that the charging system 10 can work stably in various environments, thereby improving the stability and reliability of the charging system 10.

[0082] In an exemplary embodiment, the system further includes: a status light 800 for displaying the operating status of the charging system 10 .

[0083] The charging system 10 further includes a status light 800 for displaying the operating status of the charging system 10 in real time, so that an operator can promptly understand the working status of the charging system 10 and make necessary adjustments or maintenance.

[0084] Optionally, the status light 800 includes a whole machine indicator light 801, a left power conversion cabinet indicator light 802, and a right power conversion cabinet indicator light 803. The whole machine indicator light 801 can be located in a prominent position of the charging system 10 to display the overall working status of the charging system 10. The whole machine indicator light 801 can indicate different operating states through different colors or flashing modes. For example, when the charging system 10 is operating normally, the whole machine indicator light 801 may display green. If the charging system 10 fails or requires maintenance, the whole machine indicator light 801 may display red or flash so that the operator can take timely measures. The whole machine status indicator light can help maintenance personnel quickly determine the health status of the charging system 10, reduce downtime and improve the reliability of the charging system 10.

[0085] The left power conversion cabinet indicator light 802 and the right power conversion cabinet indicator light 803 can be located on the left power conversion cabinet and the right power conversion cabinet of the charging system 10, respectively, and are specifically used to display the charging status of each power conversion cabinet. The power conversion cabinet may include a conversion module 200 and a switching unit 300, which are used to realize multiple functions such as conversion, regulation and protection of electric energy. The left power conversion cabinet indicator light 802 and the right power conversion cabinet indicator light 803 can display different colors or flashing modes according to the working status of the power conversion cabinet. For example, during the normal charging process of the power conversion cabinet, the power conversion cabinet indicator light can display green, indicating that the charging unit is working smoothly; if the power conversion cabinet has an abnormal situation, such as unstable voltage or charging interruption, the power conversion cabinet indicator light can display yellow or red, reminding the operator to check and deal with the problem.

[0086] In this embodiment, the operating status of the charging system 10 is displayed in real time through the status light 800, so that the operator can quickly locate the problem according to the status of the indicator lights in different areas and take corresponding measures to improve the maintainability and reliability of the charging system 10.

[0087] In an exemplary embodiment, the system further includes an emergency stop switch 900 for ensuring that the charging system 10 is shut down quickly when an emergency occurs in the charging system 10 .

[0088] The charging system 10 further includes an emergency stop switch 900 , which is used to ensure that the charging system 10 can be quickly shut down and power supply can be cut off when an emergency occurs in the charging system 10 , thereby ensuring the safe operation of the charging system 10 .

[0089] Optionally, the emergency stop switch 900 may include a whole machine emergency stop button 901, a left power conversion cabinet emergency stop button 902, and a right power conversion cabinet emergency stop button 903. The whole machine emergency stop button 901 may be located on the main control panel of the charging system 10, and the operator may quickly disconnect the power supply of the entire charging system 10 by pressing the whole machine emergency stop button 901 to achieve the purpose of emergency shutdown.

[0090] The emergency stop button 902 of the left power conversion cabinet can be located on the front panel or operation panel of the left power conversion cabinet of the charging system 10, so that the operator can press it quickly in an emergency. The emergency stop button 902 of the left power conversion cabinet is used to stop the power conversion operation of the left power conversion cabinet in an emergency. When the left power conversion cabinet fails, or the power supply of this part needs to be cut off separately for maintenance, the operator can press the emergency stop button 902 of the left power conversion cabinet to perform a partial shutdown to avoid affecting the normal operation of other parts. Similarly, the emergency stop button 903 of the right power conversion cabinet can be located on the front panel or operation panel of the right power conversion cabinet of the charging system 10, so that the operator can press it quickly in an emergency. The emergency stop button 903 of the right power conversion cabinet is used to stop the power conversion operation of the right power conversion cabinet in an emergency.

[0091] In this embodiment, the emergency stop switch 900 can realize the global or local emergency shutdown of the charging system 10, thereby improving the safety of the charging system 10 and ensuring that when a fault or abnormality occurs in the charging system 10, countermeasures can be taken more quickly and effectively to minimize the harm to the charging system 10 and the operator. At the same time, the emergency stop switch 900 can realize the local emergency shutdown of the charging system 10, which can improve the flexibility of the emergency stop operation and avoid excessive shutdown.

[0092] In another embodiment, a charging system 10 is provided, the charging system 10 comprising:

[0093] The phase-shifting transformer 100 has a first end connected to a power source, and a second end connected to a conversion module 200; the phase-shifting transformer 100 is used to convert a first target electricity received from a power source into a second target electricity, and transmit the second target electricity to the conversion module 200.

[0094] The conversion module 200 is used to convert the second target electricity into the third target electricity, and transmit the third target electricity to the switching unit 300 .

[0095] The switching unit 300 is connected to the conversion module 200 , and is used to receive the third target power from the conversion module 200 , and output the third target power to the charging terminal 20 .

[0096] The heat dissipation module 400 includes a top ventilation duct 401 , a first heat dissipation unit 402 and a second heat dissipation unit. The top ventilation duct 401 is used to receive hot air from the first heat dissipation unit 402 and the second heat dissipation unit, and discharge the hot air out of the charging system 10 .

[0097] The first heat dissipation unit 402 includes: a transformer air inlet 4021 for providing cold air to the phase-shifting transformer 100 to cool the phase-shifting transformer 100 ; and a transformer air outlet 4022 for discharging hot air from the phase-shifting transformer 100 to the top ventilation duct 401 .

[0098] The second heat dissipation unit includes: a conversion module air inlet 4031, including an upper air inlet 4311 of the conversion module and a lower air inlet 4312 of the conversion module, the conversion module air inlet 4031 is used to provide cold air for the conversion module 200, thereby cooling the conversion module 200; a conversion module air outlet 4032, including an upper air outlet 4321 of the left conversion module, a lower air outlet 4322 of the left conversion module, an upper air outlet 4323 of the right conversion module and a lower air outlet 4324 of the right conversion module, the conversion module air outlet 4032 is used to discharge the hot air of the conversion module 200 to the top ventilation duct 401.

[0099] The heat dissipation module 400 further includes: a transformer heat sink 405 connected to the phase-shifting transformer 100 for dissipating heat for the phase-shifting transformer 100 .

[0100] The heat dissipation module 400 also includes: a heat exchange system 404, which is connected to the top ventilation duct 401, the first heat dissipation unit 402 and the second heat dissipation unit, and is used to pre-treat the hot air of the first heat dissipation unit 402 and the second heat dissipation unit to obtain pre-treated hot air, and transmit the pre-treated hot air to the top ventilation duct 401.

[0101] The charging system 10 further includes: a temporary power supply 500 , which is located inside the charging system 10 and is used to provide backup power for the charging system 10 .

[0102] The charging system 10 further includes: a base 600 , located at the bottom of the charging system 10 , for providing support for the charging system 10 ; and a roof 700 , located at the top of the charging system 10 , for providing external protection for the charging system 10 .

[0103] The charging system 10 further includes a status light 800 for displaying the operating status of the charging system 10 .

[0104] The charging system 10 further includes an emergency stop switch 900 , which is used to ensure that the charging system 10 is shut down quickly when an emergency occurs in the charging system 10 .

[0105] In this embodiment, the first heat dissipation unit 402 and the second heat dissipation unit respectively concentrate the heat of the phase-shifting transformer 100 and the conversion module 200 through the convergence effect of the top ventilation duct 401, so that an independent heat dissipation loop is formed inside the charging system 10, which not only improves the heat dissipation efficiency, but also avoids the accumulation of heat inside the device, thereby ensuring the long-term stable and reliable operation of the charging system 10 and reducing the frequency and cost of maintenance of the charging system 10. The conversion module air inlet 4031 is used to achieve simultaneous air intake from the upper and lower parts, which can increase the efficiency of air flow and allow cold air to enter the conversion module 200 from different directions at the same time, thereby ensuring that the cold air can evenly cover all parts of the module, reduce the phenomenon of excessive local temperature, and avoid overheating caused by heat accumulation. The conversion module air outlet 4032 can help hot air to be effectively discharged from different areas, ensuring that the heat of the entire module is evenly taken away. If there is only a single air outlet, the hot air in some areas may not be discharged in time, resulting in heat accumulation, affecting the normal operation of the conversion module 200. At the same time, when the charging system 10 needs to increase the load or work in a higher power mode, the multiple air outlet design provides more heat dissipation channels, so that the charging system 10 can cope with higher heat loads, ensuring that the charging system 10 can work stably without being affected by excessive heat. The temporary power supply 500 can protect sensitive electronic devices in the charging system 10 from external interference such as power fluctuations and lightning, extend the service life of the charging system 10, reduce the maintenance cost of the charging system 10, and thus ensure the stability and reliability of the charging system 10, further enhancing the user experience.

[0106] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0107] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0108] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A charging system, characterized in that: The system comprises: A phase-shifting transformer, wherein a first end of the phase-shifting transformer is connected to a power source, and a second end of the phase-shifting transformer is connected to a conversion module; the phase-shifting transformer is used to convert a first target electricity received from the power source into a second target electricity, and transmit the second target electricity to the conversion module; A conversion module, used for converting the second target electricity into a third target electricity, and transmitting the third target electricity to a switching unit; The switching unit is connected to the conversion module, and is used to receive the third target power from the conversion module and output the third target power to the charging terminal.

2. The system according to claim 1, characterized in that The system further comprises: The heat dissipation module includes a top ventilation duct, a first heat dissipation unit and a second heat dissipation unit. The top ventilation duct is used to receive hot air from the first heat dissipation unit and the second heat dissipation unit, and discharge the hot air from the charging system.

3. The system according to claim 2, characterized in that The heat dissipation module also includes: The heat exchange system is connected to the top ventilation duct, the first heat dissipation unit and the second heat dissipation unit, and is used to pre-treat the hot air of the first heat dissipation unit and the second heat dissipation unit to obtain pre-treated hot air, and transmit the pre-treated hot air to the top ventilation duct.

4. The system according to claim 2, characterized in that The first heat dissipation unit comprises: A transformer air inlet, used to provide cold air to the phase-shifting transformer, thereby cooling the phase-shifting transformer; The transformer air outlet is used to discharge the hot air of the phase-shifting transformer to the top ventilation duct.

5. The system according to claim 2, characterized in that The second heat dissipation unit comprises: The conversion module air inlet includes an upper conversion module air inlet and a lower conversion module air inlet, wherein the conversion module air inlet is used to provide cold air to the conversion module, thereby cooling the conversion module; The conversion module air outlet includes an upper air outlet of the left conversion module, a lower air outlet of the left conversion module, an upper air outlet of the right conversion module and a lower air outlet of the right conversion module. The conversion module air outlet is used to discharge the hot air of the conversion module to the top ventilation duct.

6. The system according to claim 2, characterized in that The heat dissipation module also includes: A transformer heat sink is connected to the phase-shifting transformer and is used to dissipate heat for the phase-shifting transformer.

7. The system according to claim 1, characterized in that The system further comprises: A temporary power supply is located inside the charging system and is used to provide backup power for the charging system.

8. The system according to claim 1, characterized in that The system further comprises: A base, located at the bottom of the charging system, used to provide support for the charging system; A roof is located on the top of the charging system and is used to provide external protection for the charging system.

9. The system according to claim 1, characterized in that The system further comprises: The status light is used to display the operating status of the charging system.

10. The system according to claim 1, characterized in that The system further comprises: The emergency stop switch is used to ensure that the charging system is shut down quickly when an emergency occurs in the charging system.

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