Charging host and charging equipment

Abstract

The invention discloses a charging host and charging equipment. The charging host comprises a power conversion module and a power distribution module, the first input end of the power conversion module is suitable for being connected with alternating current, the second input end of the power conversion module is suitable for being connected with direct current, and the power conversion module is used for converting the direct current and / or the alternating current into direct current required by electric equipment; the input end of the power distribution module is connected with the output end of the power conversion module; the output end of the power distribution module is suitable for being connected with electric equipment. Therefore, the power conversion module can convert the alternating current into the direct current required by the electric equipment, and also can convert the direct current in the energy storage power station into the direct current required by the electric equipment, so that the high-power charging requirement of the electric equipment is met.

Description

Technical Field

[0001] The present application belongs to the field of energy technology, and specifically relates to a charging host and a charging device. Background Art

[0002] With the widespread adoption of electric vehicles, the industry's requirements for charging station configurations are becoming increasingly stringent. A charging station primarily consists of a power distribution cabinet, a power conversion cabinet, and a charging terminal, all connected in sequence. The power distribution cabinet's input is connected to the grid, and its output is connected to the power conversion cabinet. The power distribution cabinet typically includes devices such as circuit breakers, which cut off power in the event of an overload or short circuit at the load end, protecting the load and the circuit. The power conversion cabinet converts AC power into DC power and supplies it to the charging terminal, which then delivers the energy to the load.

[0003] In the related art, a charging host usually converts AC power into DC power to charge electrical devices. However, the charging power of the charging host is limited by the size of the AC power and cannot meet the needs of high-power electrical devices. Summary of the Invention

[0004] The present application aims to provide a charging host and a charging device that can solve the problem in the related art that the charging host cannot meet the needs of high-power electrical equipment.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application proposes a charging host, comprising: a power conversion module and a power distribution module; the first input end of the power conversion module is suitable for connecting to alternating current, the second input end of the power conversion module is suitable for connecting to direct current, and the power conversion module is used to convert the direct current and / or the alternating current into direct current required by the electrical equipment; the input end of the power distribution module is connected to the output end of the power conversion module; the output end of the power distribution module is suitable for connecting to the electrical equipment.

[0007] Optionally, the power conversion module includes a plurality of power conversion components connected in parallel and / or in series, and the power conversion components are used to convert the direct current and / or the alternating current into the direct current required by the electrical equipment.

[0008] Optionally, the power conversion component includes a first power converter and a second power converter; the first power converter is connected to the first input end, and the first power converter is used to convert the alternating current into direct current; the input end of the second power converter is connected to the first power converter, and the output end of the second power converter is connected to the input end of the power distribution module, and the second power converter is used to convert the direct current flowing through.

[0009] Optionally, the power conversion component also includes a third power converter, which is used to convert the direct current flowing through it; the third power converter is connected to the second input end, the output end of the third power converter is connected to the input end of the second power converter, and / or the output end of the third power converter is connected to the input end of the power distribution module.

[0010] Optionally, the first power converter includes an AC-DC conversion device; and / or, the second power converter includes a DC-DC conversion device; and / or, the third power converter is a DC-DC conversion device.

[0011] Optionally, it further includes a main cabinet; the main cabinet has a accommodating cavity; the power conversion module and the power distribution module are both arranged in the accommodating cavity.

[0012] Optionally, the accommodating cavity has two sides arranged opposite to each other; the power conversion module is arranged on one side thereof, and the power distribution module is arranged on the other side thereof.

[0013] Optionally, the first power converter and the third power converter are stacked along a first direction, and the first power converter and the third power converter are arranged on at least one side of the second power converter along a second direction, and the first direction and the second direction are perpendicular to each other.

[0014] Optionally, the first power converter is arranged along the first direction; the third power converter is arranged along the first direction; and the second power converter is arranged along the second direction.

[0015] Optionally, a distribution module is also included; the distribution module is arranged in the accommodating cavity, the input end of the distribution module is suitable for connecting to the alternating current and / or the direct current, and the output end of the distribution module is connected to the first input end of the power conversion module and the second input end of the power conversion module.

[0016] Optionally, an arc detection device is further included; the arc detection device is arranged in the accommodating cavity, and the arc detection device is used to detect arc light in the accommodating cavity.

[0017] Optionally, a fire extinguishing device is further included; the fire extinguishing device is arranged in the accommodating cavity and is used to extinguish a fire in the accommodating cavity.

[0018] Optionally, a heat dissipation device is further included; the heat dissipation device is arranged in the accommodating cavity, the power conversion module includes multiple power converters, and the power converter includes a power conversion module and a cooling channel; the cooling channel is arranged corresponding to the power conversion module, and the heat dissipation device is connected to the cooling channel for dissipating heat for each power converter.

[0019] Optionally, the heat dissipation device includes a heat dissipation assembly and a plurality of connecting pipes; the connecting pipes connect the heat dissipation assembly and the power converter, and the heat dissipation assembly dissipates heat from the power converter through the connecting pipes.

[0020] Optionally, the accommodating cavity includes a heat exchange chamber and an equipment chamber, the heat exchange chamber is located on one side of the equipment chamber; the heat dissipation device is arranged in the heat exchange chamber, and the power conversion module and the power distribution module are both arranged in the equipment chamber.

[0021] Optionally, the heat dissipation assembly includes a heat dissipation cabinet and a coolant tank; the heat dissipation cabinet is arranged in the heat exchange chamber, the coolant tank is arranged in the heat dissipation cabinet, and the coolant tank is connected to the connecting pipeline.

[0022] Optionally, the heat dissipation assembly further includes a pressure relief valve; the pressure relief valve is provided on the coolant tank and is in communication with the coolant tank, for relieving pressure from the coolant tank.

[0023] Optionally, the heat dissipation assembly further includes a pump; the pump is connected to the coolant tank and the power converter, and the pump is used to pump the coolant in the coolant tank into the cooling channel of the power converter.

[0024] Optionally, the heat dissipation assembly further includes a radiator; the radiator is disposed in the heat dissipation cabinet; the radiator is connected to the power converter and the coolant tank, and the radiator is used to dissipate heat from the cooling medium flowing out of the power converter.

[0025] Optionally, the heat dissipation assembly further includes a regulating valve; the regulating valve is provided in the connecting pipeline and is used to adjust the flow rate of the cooling medium flowing into the power converter.

[0026] Optionally, the heat dissipation assembly also includes a quick connector; the power converter has a water inlet and a water outlet; the water inlet and the water outlet are respectively connected to the cooling channel, and the quick connector is arranged at the water inlet and / or water outlet of the power converter.

[0027] In a second aspect, an embodiment of the present application proposes a charging device, including the charging host described in the above embodiment.

[0028] Optionally, it includes multiple charging hosts; multiple charging hosts are connected in series and / or in parallel; the second input ends of at least some of the multiple charging hosts are suitable for connecting to an energy storage power station, and the output ends of at least some of the multiple charging hosts are suitable for connecting to a charging terminal.

[0029] In an embodiment of the present application, the power conversion module is adapted to receive AC power at its first input terminal and DC power at its second input terminal, thereby converting DC power and / or AC power into DC power required by a power-consuming device. The input terminal of the power distribution module is connected to the output terminal of the power conversion module, and the output terminal of the power distribution module is adapted to be connected to the power-consuming device. In this way, the power conversion module can convert AC power into DC power required by the power-consuming device, and can also convert DC power from the energy storage station into DC power required by the power-consuming device, thereby meeting the high-power charging requirements of the power-consuming device.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a simplified diagram of the architecture of a charging host according to an embodiment of the present application;

[0033] Figure 2 This is a connection diagram between various modules in a charging host according to an embodiment of the present application;

[0034] Figure 3 This is a simplified diagram of the arrangement of a charging host according to an embodiment of the present application;

[0035] Figure 4 is another simplified diagram of the arrangement of a charging host according to an embodiment of the present application;

[0036] Figure 5 This is another schematic diagram of the arrangement of the charging host according to an embodiment of the present application;

[0037] Figure 6 Schematic diagram of current conversion between a charging host and an energy storage power station, a power grid, and a charging terminal according to an embodiment of the present application;

[0038] Figure 7 This is a schematic diagram of an application scenario of a charging host according to an embodiment of the present application;

[0039] Figure 8This is a schematic diagram of the connection between the charging host and the energy storage power station according to an embodiment of the present application;

[0040] Figure 9 This is a schematic diagram of the connection between each module and the heat dissipation device in the charging host according to an embodiment of the present application;

[0041] Figure 10 This is a cooling principle diagram of a heat dissipation device in a charging host according to an embodiment of the present application;

[0042] Figure 11 is a schematic diagram of a heat dissipation device according to an embodiment of the present application;

[0043] Figure 12 is another schematic diagram of a heat dissipation device according to an embodiment of the present application;

[0044] Figure 13 This is a schematic diagram of the assembly of the regulating valve and the connecting pipeline according to an embodiment of the present application;

[0045] Figure 14 1 is a simplified diagram of the interconnection of multiple charging hosts according to an embodiment of the present application.

[0046] Reference numerals:

[0047] 1-Electrical equipment; 2-Grid side; 3-Energy storage power station;

[0048] 4-Charging host; 41-Power conversion module; 411-First power converter; 412-Second power converter; 413-Third power converter; 42-Power distribution module; 421-Power distributor; 43-Power distribution module; 44-Arc detection device; 45-Fire extinguishing device; 46-Heat dissipation device; 461-Heat dissipation assembly; 4611-Heat dissipation cabinet; 4612-Coolant tank; 4613-Pressure relief valve; 4614-Pump; 4615-Radiator; 4616-Regulating valve; 4618-Quick connector; 4619-Fan; 4620-Pressure sensor; 4621-Liquid level sensor; 4622-Liquid temperature sensor;

[0049] 463-connecting pipeline; 4631-first pipeline; 4632-second pipeline; 4633-third pipeline; 4624-fourth pipeline; 47-controller; 48-contactor; 49-host cabinet;

[0050] 5-Charging terminal; 6-Charging gun; 7-Cable; 8-AC; 9-DC; 10-Accommodation chamber; 101-Heat exchange chamber; 102-Equipment compartment. DETAILED DESCRIPTION

[0051] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0053] 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 device or element referred to 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.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0055] The following describes in detail the charging host and charging device provided in the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0056] like Figures 1 to 5As shown, an embodiment of the present application proposes a charging host 4, comprising: a power conversion module 41 and a power distribution module 42; the first input end of the power conversion module 41 is suitable for connecting to AC power 8, and the second input end of the power conversion module 41 is suitable for connecting to DC power 9, and the power conversion module 41 is used to convert DC power 9 and / or AC power 8 into DC power required by the electrical device 1; the input end of the power distribution module 42 is connected to the output end of the power conversion module 41; the output end of the power distribution module 42 is suitable for connecting to the electrical device 1.

[0057] In the embodiment of the present application, the first input terminal of the power conversion module 41 is adapted to receive the AC power 8, and the second input terminal of the power conversion module 41 is adapted to receive the DC power 9. The power conversion module 41 is configured to convert the DC power 9 and / or the AC power 8 into the DC power required by the power consumer 1. The input terminal of the power distribution module 42 is connected to the output terminal of the power conversion module 41; and the output terminal of the power distribution module 42 is adapted to be connected to the power consumer 1. In this way, the power conversion module 41 can convert the AC power 8 into the DC power required by the power consumer 1, and can also convert the DC power 9 in the energy storage station 3 into the DC power required by the power consumer 1, thereby meeting the high-power charging requirements of the power consumer 1.

[0058] In some embodiments, as Figure 1 As shown, the power distribution module 42 is composed of multiple power distributors 421. Each power distributor 421 is connected to the power conversion module 41. Each power distributor 421 has at least one output port. The power distributor 421 can distribute the output power of each output port, thereby fully utilizing the power of the charging host 4. When the number of charging terminals 5 needs to be expanded, it is only necessary to increase the number of output ports and adjust the power distributor 421, thereby improving the scalability of the charging host 4.

[0059] It should be noted that the electrical equipment 1 can be a new energy vehicle, such as a bridge vehicle, a passenger car, a large truck, a bus, an engineering vehicle and other high-power new energy vehicles; it can also be other energy equipment, such as a portable power supply, a mobile power station, and electricity generated by a generator.

[0060] In some embodiments, as Figure 7The figure shows a schematic diagram of the application scenario of the charging host 4 of the present application. The charging host 4 of the present application can simultaneously connect to the DC power 9 of the energy storage power station 3 and the AC power 8 of the grid side 2, and convert them into the DC power required by the charging terminal 5. The charging terminal 5 transmits the DC current to the car. Therefore, the charging host 4 of the present application is compatible with the direct input and conversion of AC and DC power 9, and has more application scenarios. Among them, the energy storage power station 3 has a variety of sources, which can be wind power generation, photovoltaic power generation, and tidal power generation. The energy storage power station 3 that matches wind power generation, photovoltaic power generation, and tidal power generation outputs DC power 9, and the grid side 2 outputs AC power 8. The charging host 4 is compatible with both DC power 9 and AC power 8 inputs, achieving balanced and complementary power consumption between the energy storage power station 3 and the grid side 2, solving problems such as peak power consumption, ultra-high power consumption, and power limitation on the grid side 2.

[0061] Application Scenario 1: This application can take advantage of the price difference between the grid side 2 during the day and night, as well as the price difference between peak and low electricity consumption, to charge and store electricity in the energy storage station 3. Through this model, the price difference can be used to reduce operating expenses and increase operating income. In addition, when the price on the grid side 2 is high, the energy storage cabinet is preferentially used to achieve the goal of low-cost electricity.

[0062] Application scenario two: The charging host 4 can simultaneously input and convert the AC and DC inputs according to the power required by the charging terminal 5 to meet the ultra-high power requirements of the charging terminal 5, while reducing the impact on the grid side 2 during high-power charging. For example, during the daytime, when the input power of the grid side 2 is limited or cannot meet the power requirements of the charging terminal 5, the charging host 4 of this application can output the DC power 9 transmitted from the energy storage power station 3 to the charging terminal 5 after internal power conversion of the charging host 4. It can continuously output high power to the charging terminal 5 without being affected by the power of the grid side 2, meeting the needs of high-power fast charging and supercharging of the car, and greatly shortening the charging time of the terminal.

[0063] Application scenario three: The charging host 4 can pre-charge the power from the grid side 2 to the energy storage station 3 for storage before the peak charging period according to the user's charging peak period. When the grid side 2 cannot provide sufficient power during the peak power consumption period of the charging terminal 5, the charging host 4 will simultaneously dispatch the power of the energy storage station 3 to provide sufficient power for the charging terminal 5.

[0064] like Figure 7As shown, the charging host 4 is connected to the grid 2 via cable 7. The charging host 4 is also connected to the energy storage station 3 via cable 7. The charging host 4 is also connected to the charging terminal 5 via cable 7. The charging terminal 5 is connected to one end of the cable 7, and the other end of the cable 7 is connected to the charging gun 6. During charging, the charging gun 6 is connected to the vehicle. The charging host 4 can convert the AC power 8 transmitted from the grid 2 into DC power 9 and transmit it to the charging terminal 5. The charging host 4 can also convert the DC power 9 transmitted from the energy storage station 3 into the DC power required by the power consumer 1 and transmit it to the charging terminal 5. The charging host 4 can also simultaneously convert the current transmitted from the grid 2 and the energy storage station 3 into the DC power required by the power consumer 1 and transmit it to the charging terminal 5. When the charging host 4 uses the current transmitted from the grid 2 and the energy storage station 3 simultaneously, the output power can exceed 1000 kW. Since the charging power of the grid side 2 is determined by the current of the grid side 2, the charging power of the grid side 2 is difficult to increase. The charging host 4 of the present application transmits the output power of the energy storage power station 3 to the charging terminal 5 through a compatible design, and supplies high power to the car for charging.

[0065] Charging mode 1: Figure 2 and Figure 7 As shown, when the output power of charging host 4 is 1200KW, its power sources can be the 700KW output power of energy storage station 3 and the 500KW output power of grid side 2. At this time, charging host 4 can give all the output power of 1200KW to charging terminal 5 or distribute it according to the power requirements of different charging terminals 5.

[0066] Charging mode 2: Figure 2 and Figure 7 As shown, if the output power of the grid side 2 is limited to 400KW, when the output power of the charging host 4 is still 1200KW, the output power of the energy storage power station 3 increases to 800KW, thereby being free from the power limit of the grid side 2 and ensuring that the charging host 4 can continue to output high power.

[0067] Charging mode three: Figure 7 and Figure 8 As shown, the charging host 4 can convert the electric energy from the grid side 2 into the energy storage station 3. The charging host 4 switches the current path by controlling the internal contactor 48, allowing the circuit to achieve bidirectional charging and discharging between the grid side 2 and the energy storage station 3.

[0068] Charging mode 4: Figure 7 As shown, the charging gun 6 is connected to the car, and the charging host 4 controls the internal contactor 48 to switch the current path to charge the electric energy in one or more cars to the energy storage station 3. In this charging mode, the car is the carrier of electric energy.

[0069] Charging mode 5: Figure 7As shown, the charging gun 6 is connected to the car; when there are multiple cars connected to the charging terminal 5, the charging host 4 can set one or more of the cars as the power input source; the charging host 4 converts and distributes the power output by one or more cars to another one or more cars for charging.

[0070] Alternatively, as Figure 2 As shown, the power conversion module 41 includes a plurality of power conversion components connected in parallel and / or in series, and the power conversion components are used to convert direct current 9 and / or alternating current 8 into direct current required by the electrical device 1.

[0071] In the embodiment of the present application, the power conversion components are connected in series or in parallel, so that the direct current 9 or the alternating current 8 can be converted by the power conversion components to meet the charging power requirements of different electrical devices 1.

[0072] In some embodiments, as Figure 2 As shown, the power conversion component includes a first power conversion component, a second power conversion component and a third power conversion component; the first power conversion component and the second power conversion component are connected in series, and the third power conversion component is connected in parallel to the first power conversion component and / or the second power conversion component.

[0073] In addition, if Figure 2 As shown, the first power conversion assembly includes a plurality of first power converters 411 connected in parallel, the second power conversion assembly includes a plurality of second power converters 412 connected in parallel, and the third power conversion assembly includes a plurality of third power converters 413 connected in parallel.

[0074] Alternatively, as Figure 2 As shown, the power conversion component includes a first power converter 411 and a second power converter 412; the first power converter 411 is connected to the first input end, and the first power converter 411 is used to convert the alternating current 8 into direct current 9; the input end of the second power converter 412 is connected to the first power converter 411, and the output end of the second power converter 412 is connected to the input end of the power distribution module 42, and the second power converter 412 is used to convert the direct current 9 flowing through.

[0075] In the embodiment of the present application, the first power converter 411 is used to convert the AC power 8 into the DC power 9; the input end of the second power converter 412 is connected to the first power converter 411, and the output end of the second power converter 412 is connected to the input end of the power distribution module 42. In this way, the AC power 8 is first converted into the DC power 9 by the first power converter 411, and then the DC power 9 is converted up and down by the second power converter 412 to output the DC power 9 required by the power consumption device 1, thereby meeting the charging requirements of the power consumption device 1.

[0076] In some embodiments, the first power converter 411 and the second power converter 412 can be connected using a copper busbar. For example, the first power converter 411 and the second power converter 412 can be connected using a copper busbar, and the second power converter 412 and the power distributor 421 can also be connected using a copper busbar. Thus, by using a copper busbar connection, the various components of the charging host 4 can be arranged more closely together, and the overcurrent paths between the various components can be shortened.

[0077] It should be noted that the first power converter 411 and the second power converter 412 can be set to one or more, and the number of settings is flexibly configured according to the rated power of the AC power 8 on the grid side 2, so that the charging power of the charging host 4 can be flexibly set.

[0078] Alternatively, as Figure 2 As shown, the power conversion component also includes a third power converter 413, which is used to convert the direct current 9 flowing through it; the third power converter 413 is connected to the second input end, and the output end of the third power converter 413 is connected to the input end of the second power converter 412.

[0079] In the embodiment of the present application, a third power converter 413 is provided for converting the DC power 9 flowing therethrough, and the output end of the third power converter 413 is connected to the input end of the second power converter 412. In this way, the DC power 9 of the energy storage station 3 converted by the third power converter 413 is output together with the current converted by the first power converter 411 to the second power converter 412, and then output to the power distribution module 42, thereby increasing the charging power of the power distribution module 42 in a short period of time and improving the charging efficiency.

[0080] Alternatively, as Figure 2 As shown, the output end of the third power converter 413 is connected to the input end of the power distribution module 42 .

[0081] In the embodiment of the present application, the output end of the third power converter 413 is connected to the input end of the power distribution module 42. In this way, the third power converter 413 converts the DC power 9 of the energy storage station 3 and directly outputs it to the power distribution module 42, thereby avoiding the current from passing through the second power converter 412 and reducing current loss.

[0082] In some embodiments, as Figure 2As shown, the power distribution module 42 further includes a contactor 48, which is used to connect the power distribution module 42 and the third power converter 413, as well as the second power converter 412 and the third power converter 413. Therefore, the third power converter 413 can be switched through the contactor 48 to connect to the second power converter 412, or to the power distributor 421 in the power distribution module 42, or to connect to the second power converter 412 and the power distributor 421 at the same time.

[0083] It should be noted that the present application can control the direction of current flow by increasing the number of contactors 48, allowing the above two charging modes to be performed independently or simultaneously. For example, if the required power of the charging terminal 5 is 1200KW, the power distribution module 42 can call for 700KW of charging power converted by the second power conversion component and 500KW of charging power converted by the first power conversion component.

[0084] Alternatively, as Figure 2 As shown, the first power converter 411 includes an AC-DC conversion device.

[0085] In the embodiment of the present application, the first power converter 411 includes an AC-DC converter, so that the AC power 8 can be converted into the DC power 9 through the first power converter 411 .

[0086] In some embodiments, the first power converter 411 may further include a DC-DC converter. Thus, the second power converter 412 is not required, and the charging host 4 can directly convert the AC power 8 into the DC power 9 required by the power-consuming device 1 through the first power converter 411.

[0087] Alternatively, as Figure 2 As shown, the second power converter 412 includes a DC-DC converter device.

[0088] In the embodiment of the present application, the second power converter 412 includes a DC-DC converter device, so that the DC power 9 converted by the first power converter 411 can be converted by the second power converter 412 into the DC power 9 required by the power consumption device 1 through step-up and step-down conversion.

[0089] Alternatively, as Figure 2 As shown, the third power converter 413 is a DC-DC conversion device.

[0090] In the embodiment of the present application, the third power converter 413 includes a DC-DC converter device, so that the DC power 9 of the energy storage station 3 is converted by the third power converter 413 into the DC power 9 required by the power consumption device 1.

[0091] It should be noted that the second power converter 412 and the third power converter 413 are DC-DC converter devices with bidirectional conversion capabilities.

[0092] Alternatively, as Figure 3 As shown, the main cabinet 49 is also included; the main cabinet 49 has a receiving cavity 10; the power conversion module 41 and the power distribution module 42 are both arranged in the receiving cavity 10.

[0093] In the embodiment of the present application, a housing cavity 10 is provided in the main cabinet 49; the power conversion module 41 and the power distribution module 42 are both provided in the housing cavity 10. In this way, the main cabinet 49 can protect the power conversion module 41 and the power distribution module 42.

[0094] Alternatively, as Figure 3 As shown, the accommodating cavity 10 has two oppositely arranged sides; the power conversion module 41 is arranged on one side thereof, and the power distribution module 42 is arranged on the other side thereof.

[0095] In the embodiment of the present application, the accommodating chamber 10 is provided with two opposite sides, with the power conversion module 41 being provided on one side and the power distribution module 42 being provided on the other side. This facilitates separating the power conversion module 41 from the power distribution module 42, thereby making the power conversion module 41 and the power distribution module 42 more closely arranged, thereby improving the space utilization of the accommodating chamber 10.

[0096] In some embodiments, as Figure 1 and Figure 3 As shown, the power conversion module 41 is arranged on the right side of the accommodating cavity 10, and the power distribution module 42 is arranged on the left side of the accommodating cavity 10; wherein, the second power converter 412 is arranged at intervals up and down at the bottom of the accommodating cavity 10, the first power converter 411 and the third power converter 413 are arranged on the upper side of the second power converter 412, and the first power converter 411 and the third power converter 413 are arranged at intervals left and right.

[0097] In some other embodiments, Figure 4 As shown, the power conversion module 41 is disposed in the middle portion of the accommodating cavity 10, and the power distribution module 42 is disposed at the bottom of the accommodating cavity 10. The first power converter 411, the third power converter 413, and the second power converter 412 are disposed above the power distribution module 42, and the first power converter 411, the third power converter 413, and the second power converter 412 are sequentially spaced from right to left.

[0098] In some embodiments, the equipment compartment 102 in the accommodating chamber 10 can be divided into a first sub-compartment, a second sub-compartment, a third sub-compartment, a fourth sub-compartment, a fifth sub-compartment, and a sixth sub-compartment. The first sub-compartment is used to place the first power converter 411. The first sub-compartment is provided with multiple positioning slots, each of which is used to place a first power converter 411. The second sub-compartment is used to place the second power converter 412. The second sub-compartment is provided with multiple positioning slots, each of which is used to place a second power converter 412. The third sub-compartment is used to place the third power converter 413. The second sub-compartment is provided with multiple positioning slots, each of which is used to place a third power converter 413. The fourth sub-compartment is used to place the power distributor 421. The fourth sub-compartment is provided with multiple positioning slots, each of which is used to place a fourth power converter. It should be noted that the number of positioning slots can be selected according to actual needs.

[0099] In addition, the fifth sub-compartment is used to place the controller 47 and the arc detection device 44, and the second sub-compartment is used to place the power distribution module 43.

[0100] Alternatively, as Figure 1 and Figure 3 As shown, the first power converter 411 and the third power converter 413 are stacked along the first direction X, and the first power converter 411 and the third power converter 413 are arranged on at least one side of the second power converter 412 along the second direction Z, and the first direction X and the second direction Z are perpendicular to each other.

[0101] It should be noted that the first direction X is the length direction of the mainframe cabinet 49 , and the second direction Z is the height direction of the mainframe cabinet 49 .

[0102] In the embodiment of the present application, the first power converter 411 and the third power converter 413 are stacked along the first direction X, and the first power converter 411 and the third power converter 413 are arranged on at least one side of the second power converter 412 along the second direction Z. In this way, the second power converter 412, the first power converter 411, and the third power converter 413 are rationally spatially arranged, thereby reducing the length of the connection between the pipeline and the copper busbar.

[0103] In some embodiments, the first power converter 411 and the third power converter 413 can be disposed on both sides of the second power converter 412 along the second direction. In this way, the number of the first power converter 411 and the third power converter 413 can be flexibly set according to actual needs to meet different charging power requirements.

[0104] In some embodiments, as Figure 1As shown, the first power converter 411 and the third power converter 413 are set as a layer, and the second power converter 412 is set at the bottom of the first power converter 411 and the third power converter 413; of course, the number of the third power converter 413 can be appropriately reduced, and the first power converter 411 and the third power converter 413 can be set as the same two layers to meet different needs.

[0105] Alternatively, as Figure 1 and Figure 3 As shown, the first power converter 411 is arranged along the first direction X; the third power converter 413 is arranged along the first direction X; and the second power converter 412 is arranged along the second direction Z.

[0106] In the embodiment of the present application, the first power converter 411 is arranged along the first direction X; the third power converter 413 is arranged along the first direction X; and the second power converter 412 is arranged along the second direction Z. In this way, the size of the receiving cavity 10 is matched, and the layout is more reasonable.

[0107] In some embodiments, as Figure 9 As shown, there may be a certain gap between two adjacent first power converters 411, a certain gap between two adjacent second power converters 412, and a certain gap between two adjacent third power converters 413. In this way, the gaps can be used to dissipate heat between the two adjacent power converters.

[0108] Alternatively, as Figure 3 and Figure 4 As shown, it also includes a distribution module 43; the distribution module 43 is arranged in the accommodating cavity 10, the input end of the distribution module 43 is suitable for connecting to AC power 8 and / or DC power 9, and the output end of the distribution module 43 is connected to the first input end of the power conversion module 41 and the second input end of the power conversion module 41.

[0109] In the embodiment of the present application, the power distribution module 43 is disposed in the accommodating cavity 10, the input end of the power distribution module 43 is adapted to receive the alternating current 8 and / or the direct current 9, and the output end of the power distribution module 43 is connected to the first input end and the second input end of the power conversion module 41. In this way, the direct current 9 and / or the direct current 9 can be output to the power conversion module 41 through the power distribution module 43.

[0110] In some embodiments, as Figure 3 and Figure 4 As shown, the power distribution module 43 is arranged on the side of the main cabinet 49 to facilitate the connection between the power distribution module 43 and the power grid and the energy storage power station 3.

[0111] In some other embodiments, the power distribution module 43 includes a water immersion sensor, a circuit breaker, a smart meter, a current transformer, a turbulence fan 4619, a temperature sensor, a detection and protection circuit, and a connecting copper busbar. The water immersion sensor is used to detect the water immersion of the charging host 4 and feedback it to the controller 47. When triggered, the power input is cut off. The circuit breaker is used to disconnect the input power to avoid overload. The smart meter and the current transformer can respectively detect the amount of input power and the size of the input current. The turbulence fan 4619 is used to dissipate heat to prevent the local temperature of the power distribution module 43 from being too high. The temperature sensor can collect the ambient temperature and provide it to the controller 47. The detection and protection circuit is used to detect the current size of the AC input and DC input, the temperature of the copper busbar, etc., and is used to provide overload protection, overtemperature protection, and short-circuit protection.

[0112] Alternatively, as Figure 3 and Figure 4 As shown, an arc detection device 44 is also included; the arc detection device 44 is arranged in the accommodating cavity 10, and the arc detection device 44 is used to detect arc in the accommodating cavity 10.

[0113] In the embodiment of the present application, the arc detection device 44 is disposed in the accommodating cavity 10. In this way, the arc detection device 44 can be used to detect the arc phenomenon in the accommodating cavity 10, thereby avoiding damage to the charging host 4.

[0114] In some embodiments, as Figure 3 and Figure 4 As shown, it also includes a controller 47, which is electrically connected to the arc detection device 44; the arc detection device 44 includes a detection circuit board and multiple detection probes, and the multiple detection probes are respectively electrically connected to the detection circuit board. The multiple detection probes are arranged in the power distributor 421, the first power converter, the second power converter and the third power converter, and are used to detect the arc conditions of these devices and feed back to the controller 47. The controller 47 cuts off the input power in time according to the data fed back by the arc detection device 44.

[0115] Alternatively, as Figure 3 and Figure 4 As shown, a fire extinguishing device 45 is also included; the fire extinguishing device 45 is arranged in the accommodating cavity 10 and is used to extinguish a fire in the accommodating cavity 10.

[0116] In the embodiment of the present application, the fire extinguishing device 45 is provided in the accommodating chamber 10 to extinguish the fire in the accommodating chamber 10. In this way, when a component in the charging host 4 catches fire, the fire extinguishing device 45 can be used to extinguish the burning component, thereby protecting property safety.

[0117] In some embodiments, the fire extinguishing device 45 can be arranged as follows: Figure 3between the power conversion module 41 and the power distribution module 42 shown; or, the fire extinguishing device 45 can also be arranged as shown in FIG. Figure 4 In this way, the fire extinguishing range of the fire extinguishing device 45 can cover the power conversion module 41 and the power distribution module 42 to the greatest extent.

[0118] In some embodiments, the fire extinguishing device 45 is also electrically connected to the controller 47; thus, when a fire occurs inside the charging host 4, the fire extinguishing device 45 will be triggered to spray a fire extinguishing agent to extinguish the fire and prevent the fire from spreading.

[0119] Alternatively, as Figure 3 、 Figure 4 Figure 9 As shown, it also includes a heat dissipation device 46; the heat dissipation device 46 is arranged in the accommodating cavity 10, the power conversion module 41 includes multiple power converters, and the power converter includes a power conversion module and a cooling channel; the cooling channel is arranged corresponding to the power conversion module, and the heat dissipation device 46 is connected to the cooling channel for dissipating heat for each power converter.

[0120] In the embodiment of the present application, the heat sink 46 is disposed within the accommodating cavity 10. The power conversion module 41 includes multiple power converters, each of which includes a power conversion module and a cooling channel. The cooling channel is provided corresponding to the power conversion module, and the heat sink 46 is connected to the cooling channel to dissipate heat from each power converter. In this way, the heat sink 46 dissipates heat for each power converter, thereby reducing the temperature of the power converter and improving the conversion efficiency of the power converter.

[0121] Alternatively, as Figure 3 、 Figure 4 Figure 9 As shown, the heat dissipation device 46 includes a heat dissipation assembly 461 and a plurality of connecting pipes 463 ; the connecting pipes 463 connect the heat dissipation assembly 461 and the power converter, and the heat dissipation assembly 461 dissipates heat from the power converter through the connecting pipes 463 .

[0122] In the embodiment of the present application, the heat dissipation assembly 461 and the power converter are connected by providing a connecting pipe 463. In this way, the heat dissipation assembly 461 dissipates heat from the power converter through the connecting pipe 463, thereby reducing the operating temperature of the power converter.

[0123] Alternatively, as Figure 3 and Figure 4 The accommodating chamber 10 includes a heat exchange chamber 101 and an equipment chamber 102. The heat exchange chamber 101 is located on one side of the equipment chamber 102. The heat dissipation device 46 is arranged in the heat exchange chamber 101, and the power conversion module 41 and the power distribution module 42 are both arranged in the equipment chamber 102.

[0124] In the embodiment of the present application, the heat exchange chamber 101 is located on one side of the equipment chamber 102; the heat dissipation device 46 is installed in the heat exchange chamber 101, and the power conversion module 41 and the power distribution module 42 are both installed in the equipment chamber 102. In this way, by stacking the heat exchange chamber 101 and the equipment chamber 102 on top of each other, the floor space of the host cabinet 49 can be effectively reduced, making it easier to deploy the charging host 4 in environments with relatively cramped installation space.

[0125] In some embodiments, when the power conversion module 41, the power distribution module 42, or the power distribution module 43 needs to be replaced, expanded, or updated, the heat dissipation assembly 461 can remain in its original state, or the heat dissipation assembly 461 can be simply adapted and modified, which can reduce the modification cost and construction difficulty. Alternatively, when the heat dissipation assembly 461 needs to be replaced, expanded, or updated, the power conversion module 41, the power distribution module 42, and the power distribution module 43 located in the equipment compartment 102 can remain in their original state, or the power conversion module 41, the power distribution module 42, or the power distribution module 43 can be simply adapted and modified, which can reduce the modification cost and construction difficulty, thereby improving the scalability of the charging host 4.

[0126] In some embodiments, as Figure 5 As shown, the charging unit 4 and heat sink 46 can be independent. As the total power and power density of the charging unit 4 increase, the cabinet size also increases, requiring a higher power output from the heat sink 46. Placing the heat sink 46 separately from the charging unit 4 frees up more space for components such as the power conversion module 41, power distribution module 42, and power distribution module 43. The charging unit 4 and heat sink 46 are connected via connecting pipes 463 and cables 7. The heat sink 46 can be configured to dissipate heat from the side, top, or at an angle.

[0127] Alternatively, as Figures 10 to 12 As shown, the heat dissipation assembly 461 includes a heat dissipation cabinet 4611 and a coolant tank 4612 ; the heat dissipation cabinet 4611 is disposed in the heat exchange chamber 101 , the coolant tank 4612 is disposed in the heat dissipation cabinet 4611 , and the coolant tank 4612 is connected to the connecting pipe 463 .

[0128] In the embodiment of the present application, the heat dissipation cabinet 4611 is disposed within the heat exchange chamber 101, the coolant tank 4612 is disposed within the heat dissipation cabinet 4611, and the coolant tank 4612 is connected to the connecting pipe 463. This facilitates the installation of the heat dissipation assembly 461 within the heat exchange chamber 101 via the heat dissipation cabinet 4611. Furthermore, a certain amount of cooling medium can be stored in the coolant tank 4612, thereby ensuring that the heat dissipation device 46 continuously and stably dissipates heat from the power converter.

[0129] In some embodiments, as Figure 9、 Figure 11 and Figure 12 As shown, connecting pipeline 463 includes a first pipeline 4631, a second pipeline 4632, a third pipeline 4633, and a fourth pipeline 4624. One end of first pipeline 4631 is connected to coolant tank 4612, and the other end of first pipeline 4631 is connected to third pipeline 4633. Third pipeline 4633 is provided with multiple connection ports, and fourth pipeline 4624 is used to connect the connection ports to the water inlet of each power converter. Fourth pipeline 4624 is also used to connect the water outlet of each power converter to second pipeline 4632. In this way, the cooling medium in coolant tank 4612 flows out of first pipeline 4631, passes through third pipeline 4633, flows into the water inlet of the power converter through fourth pipeline 4624, then flows out of the water outlet of the power converter, passes through third pipeline 4633, flows into second pipeline 4632, and returns to coolant tank 4612, thus forming a cooling circuit.

[0130] Alternatively, as Figure 11 and Figure 12 As shown, the heat dissipation assembly 461 further includes a pressure relief valve 4613 ; the pressure relief valve 4613 is disposed on the coolant tank 4612 and is in communication with the coolant tank 4612 for relieving pressure in the coolant tank 4612 .

[0131] In the embodiment of the present application, the pressure relief valve 4613 is connected to the coolant tank 4612. In this way, when the pressure in the coolant tank 4612 exceeds the pressure relief value of the pressure relief valve 4613, the pressure can be unloaded through the pressure relief valve 4613, so that the coolant tank 4612 returns to normal pressure.

[0132] In some embodiments, as Figure 11 As shown, the heat dissipation assembly 461 also includes a pressure sensor 4620; the pressure sensor 4620 is arranged in the first pipeline 4631 and is electrically connected to the controller 47; the pressure sensor 4620 can detect the pipeline pressure and feed back the collected pressure information to the controller 47, and the controller 47 adjusts the output power of the pump 4614 according to the pressure information.

[0133] In some embodiments, as Figure 11 As shown, the heat dissipation assembly 461 also includes a liquid level sensor 4621; the liquid level sensor 4621 is arranged on the coolant tank 4612 and is electrically connected to the controller 47; the liquid level sensor 4621 can detect the liquid level height of the cooling medium in the coolant tank 4612 and feed back the collected information to the controller 47, and the controller 47 can display the amount of cooling medium in the coolant tank 4612, thereby reminding the user to add cooling medium in time.

[0134] Alternatively, as Figure 11 and Figure 12As shown, the heat dissipation assembly 461 further includes a pump 4614 ; the pump 4614 is connected to the coolant tank 4612 and the power converter, and the pump 4614 is used to pump the coolant in the coolant tank 4612 into the cooling channel of the power converter.

[0135] In the embodiment of the present application, pump 4614 is connected to coolant tank 4612 and the power converter, and pump 4614 is used to pump coolant in coolant tank 4612 into the cooling channel of the power converter. In this way, pump 4614 can increase the output flow rate and improve cooling efficiency.

[0136] In some embodiments, as Figure 11 and Figure 12 As shown, the number of pumps 4614 can be two, and the two pumps 4614 are connected in parallel to the first pipeline 4631, thereby further increasing the output flow rate of the cooling medium.

[0137] Optionally, the heat dissipation assembly 461 further includes a radiator 4615 ; the radiator 4615 is disposed in the heat dissipation cabinet 4611 ; the radiator 4615 is connected to the power converter and the coolant tank 4612 , and the radiator 4615 is used to dissipate the cooling medium flowing out of the power converter.

[0138] In the embodiment of the present application, the radiator 4615 is disposed in the heat dissipation cabinet 4611; the radiator 4615 is connected to the power converter and the coolant tank 4612. In this way, the cooling medium flowing out of the power converter is dissipated through the radiator 4615, thereby improving the heat dissipation efficiency of the heat dissipation device 46.

[0139] In some embodiments, as Figure 11 As shown, the heat dissipation assembly 461 further includes a fan 4619. The fan 4619 is disposed on the heat dissipation cabinet 4611 and is located on top of the radiator 4615. The fan 4619 is used to remove heat from the radiator 4615. The number of fans 4619 can be one or more.

[0140] In some embodiments, as Figure 11 As shown, the heat dissipation assembly 461 also includes a liquid temperature sensor 4622; the liquid level sensor 4621 is arranged on the coolant tank 4612 and is electrically connected to the controller 47; the liquid temperature sensor 4622 can detect the temperature of the cooling medium in the coolant tank 4612 and feed back the collected information to the controller 47, and the controller 47 can adjust the speed of the fan 4619 according to the collected information.

[0141] Alternatively, as Figure 13 As shown, the heat dissipation assembly 461 further includes a regulating valve 4616 ; the regulating valve 4616 is provided in the connecting pipe 463 and is used to adjust the flow rate of the cooling medium flowing into the power converter.

[0142] In the embodiment of the present application, the regulating valve 4616 is provided in the connecting pipe 463. In this way, the regulating valve 4616 is used to adjust the flow rate of the cooling medium flowing into the power converter, thereby matching the heat of different power converters.

[0143] In some embodiments, as Figure 9 As shown, a regulating valve 4616 can be provided at the connection between each third pipeline 4633 and the fourth pipeline 4624 to adjust the flow rate of the cooling medium flowing into each power converter.

[0144] Specifically, since the heat generation of the first power converter 411, the second power converter 412 and the third power converter 413 is different, a regulating valve 4616 is set corresponding to each power converter, so that the opening of each regulating valve 4616 can be adjusted according to the different heat generation.

[0145] Alternatively, as Figure 9 As shown, the heat dissipation assembly 461 also includes a quick connector 4618; the power converter has a water inlet and a water outlet; the water inlet and the water outlet are respectively connected to the cooling channel, and the quick connector 4618 is provided at the water inlet and / or water outlet of the power converter.

[0146] In the embodiment of the present application, the quick connector 4618 is provided at the water inlet and / or outlet of the power converter. In this way, the cut-off function of the quick connector 4618 is utilized to prevent the cooling medium between the fourth pipe 4624 and the power converter from flowing out during disassembly, thereby enabling quick maintenance and replacement.

[0147] It should be noted that the quick connector 4618 can be set as a two-way stop valve, a one-way stop valve, or other valves with a stop function.

[0148] In a second aspect, an embodiment of the present application proposes a charging device, including the charging host 4 in the above embodiment.

[0149] In the embodiment of the present application, the first input terminal of the power conversion module 41 is adapted to receive the AC power 8, and the second input terminal of the power conversion module 41 is adapted to receive the DC power 9. The power conversion module 41 is configured to convert the DC power 9 and / or the AC power 8 into the DC power 9 required by the power consumer 1. The input terminal of the power distribution module 42 is connected to the output terminal of the power conversion module 41; and the output terminal of the power distribution module 42 is adapted to be connected to the power consumer 1. In this way, the power conversion module 41 can convert the AC power 8 into the DC power 9 required by the power consumer 1, and can also convert the DC power 9 in the energy storage station 3 into the DC power 9 required by the power consumer 1, thereby meeting the high-power charging requirements of the power consumer 1.

[0150] Alternatively, as Figure 14 As shown, it includes multiple charging hosts 4; multiple charging hosts 4 are connected in series and / or in parallel; the second input ends of at least some of the multiple charging hosts 4 are suitable for connecting to the energy storage power station 3, and the output ends of at least some of the multiple charging hosts 4 are suitable for connecting to the charging terminal 5.

[0151] In this embodiment of the present application, multiple charging hosts 4 are connected in series and / or in parallel; the second input terminals of at least some of the multiple charging hosts 4 are connected to the energy storage power station 3, and the output terminals of at least some of the multiple charging hosts 4 are connected to the charging terminal 5. This allows the charging hosts 4 to convert and transfer current to each other. Furthermore, the interconnection of charging hosts 4 allows for flexible scheduling of the electrical energy and power of other charging hosts 4, thereby enabling power sharing between the charging hosts 4 and the charging terminal 5.

[0152] In some embodiments, as Figure 14 As shown, interconnecting multiple charging hosts 4 can easily double the power output to the charging terminal 5. For example, if the charging terminal 5 requires 2000KW of power, the charging terminal 5 can draw power from one or more charging hosts 4 for output, and the charging host 4 can draw power from one or more energy storage power stations 3 for output.

[0153] In some other embodiments, multiple charging hosts 4 share a heat dissipation device 46; the heat dissipation device 46 is connected to the charging hosts 4 through multiple pipes, so that multiple charging hosts 4 share a cooling system, so as to facilitate centralized control of the charging hosts 4 and improve the operating efficiency of the charging station.

[0154] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0155] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A charging host (4), characterized in that: include: A power conversion module (41) and a power distribution module (42); The first input end of the power conversion module (41) is suitable for receiving alternating current (8), and the second input end of the power conversion module (41) is suitable for receiving direct current (9). The power conversion module (41) is used to convert the direct current (9) and / or the alternating current (8) into direct current required by the power-consuming device (1); The input end of the power distribution module (42) is connected to the output end of the power conversion module (41); and the output end of the power distribution module (42) is suitable for being connected to the electrical equipment (1).

2. The charging host (4) according to claim 1, characterized in that: The power conversion module (41) includes a plurality of power conversion components connected in parallel and / or in series, and the power conversion components are used to convert the direct current (9) and / or the alternating current (8) into the direct current required by the electrical device (1).

3. The charging host (4) according to claim 2, characterized in that: The power conversion component comprises a first power converter (411) and a second power converter (412); the first power converter (411) is connected to the first input end, and the first power converter (411) is used to convert the alternating current (8) into direct current; The input end of the second power converter (412) is connected to the first power converter (411), the output end of the second power converter (412) is connected to the input end of the power distribution module (42), and the second power converter (412) is used to convert the direct current flowing through.

4. The charging host (4) according to claim 3, characterized in that: The power conversion component further includes a third power converter (413), and the third power converter (413) is used to convert the direct current flowing through the power converter; The third power converter (413) is connected to the second input end, the output end of the third power converter (413) is connected to the input end of the second power converter (412), and / or the output end of the third power converter (413) is connected to the input end of the power distribution module (42).

5. The charging host (4) according to claim 4, characterized in that: The first power converter (411) includes an AC-DC conversion device; and / or the second power converter (412) includes a DC-DC conversion device; and / or the third power converter (413) is a DC-DC conversion device.

6. The charging host (4) according to claim 5, characterized in that: Also includes a main cabinet (49); The main cabinet (49) has a receiving cavity (10); the power conversion module (41) and the power distribution module (42) are both arranged in the receiving cavity (10).

7. The charging host (4) according to claim 6, characterized in that: The accommodating cavity (10) has two sides arranged opposite to each other; the power conversion module (41) is arranged on one side thereof, and the power distribution module (42) is arranged on the other side thereof.

8. The charging host (4) according to claim 7, characterized in that: The first power converter (411) and the third power converter (413) are stacked along a first direction (X), and the first power converter (411) and the third power converter (413) are arranged on at least one side of the second power converter (412) along a second direction (Z), and the first direction (X) and the second direction (Z) are perpendicular to each other.

9. The charging host (4) according to claim 8, characterized in that: The first power converter (411) is arranged along the first direction (X); the third power converter (413) is arranged along the first direction (X); and the second power converter (412) is arranged along the second direction (Z).

10. The charging host (4) according to claim 6, characterized in that: Also included is a power distribution module (43); The power distribution module (43) is arranged in the accommodating cavity (10), the input end of the power distribution module (43) is suitable for receiving the alternating current (8) and / or the direct current (9), and the output end of the power distribution module (43) is connected to the first input end of the power conversion module (41) and the second input end of the power conversion module (41).

11. The charging host (4) according to claim 6, characterized in that: It also includes an arc detection device (44); the arc detection device (44) is arranged in the accommodating cavity (10), and the arc detection device (44) is used to detect arc light in the accommodating cavity (10).

12. The charging host (4) according to claim 6, characterized in that: It also includes a fire extinguishing device (45); the fire extinguishing device (45) is arranged in the accommodating cavity (10) and is used to extinguish a fire in the accommodating cavity (10).

13. The charging host (4) according to claim 6, characterized in that: Also included is a heat dissipation device (46); The heat dissipation device (46) is arranged in the accommodating cavity (10); the power conversion module (41) includes a plurality of power converters, and the power converter includes a power conversion module and a cooling channel; The cooling channel is provided corresponding to the power conversion module, and the heat dissipation device (46) is in communication with the cooling channel for dissipating heat for each power converter.

14. The charging host (4) according to claim 13, characterized in that: The heat dissipation device (46) includes a heat dissipation assembly (461) and a plurality of connecting pipes (463); The connecting pipe (463) connects the heat dissipation assembly (461) and the power converter, and the heat dissipation assembly (461) dissipates heat from the power converter via the connecting pipe (463).

15. The charging host (4) according to claim 14, characterized in that: The accommodating chamber (10) comprises a heat exchange chamber (101) and an equipment chamber (102), wherein the heat exchange chamber (101) is located on one side of the equipment chamber (102); The heat dissipation device (46) is arranged in the heat exchange chamber (101), and the power conversion module (41) and the power distribution module (42) are both arranged in the equipment chamber (102).

16. The charging host (4) according to claim 15, characterized in that: The heat dissipation assembly (461) includes a heat dissipation cabinet (4611) and a coolant tank (4612); The heat dissipation cabinet (4611) is arranged in the heat exchange chamber (101), the cooling liquid tank (4612) is arranged in the heat dissipation cabinet (4611), and the cooling liquid tank (4612) is communicated with the connecting pipe (463).

17. The charging host (4) according to claim 16, characterized in that: The heat dissipation assembly (461) further includes a pressure relief valve (4613); the pressure relief valve (4613) is provided on the coolant tank (4612) and is in communication with the coolant tank (4612) for relieving pressure from the coolant tank (4612).

18. The charging host (4) according to claim 16, characterized in that: The heat dissipation assembly (461) further includes a pump (4614); the pump (4614) is connected to the coolant tank (4612) and the power converter, and the pump (4614) is used to pump the coolant (4614) in the coolant tank (4612) into the cooling channel of the power converter.

19. The charging host (4) according to claim 16, characterized in that: The heat dissipation assembly (461) further includes a radiator (4615); the radiator (4615) is disposed in the heat dissipation cabinet (4611); the radiator (4615) is connected to the power converter and the coolant tank (4612), and the radiator (4615) is used to dissipate heat from the cooling medium flowing out of the power converter.

20. The charging host (4) according to claim 16, characterized in that: The heat dissipation assembly (461) further includes a regulating valve (4616); the regulating valve (4616) is provided in the connecting pipeline (463) and is used to adjust the flow rate of the cooling medium flowing into the power converter.

21. The charging host (4) according to any one of claims 14 to 20, characterized in that: The heat dissipation assembly (461) further includes a quick connector (4618); The power converter has a water inlet and a water outlet; the water inlet and the water outlet are respectively connected to the cooling channel, and the quick connector (4618) is provided at the water inlet and / or water outlet of the power converter.

22. A charging device, characterized in that: The charging host (4) comprises any one of claims 1-20.

23. The charging device according to claim 22, characterized in that The invention comprises a plurality of charging hosts (4); the plurality of charging hosts (4) are connected in series and / or in parallel; the second input ends of at least some of the charging hosts (4) among the plurality of charging hosts (4) are suitable for connecting to an energy storage power station (3), and the output ends of at least some of the charging hosts (4) among the plurality of charging hosts (4) are suitable for connecting to a charging terminal (5).

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