Charging device and power distribution method

Abstract

The embodiment of the present application discloses a charging device and a power distribution method, wherein the main controller is used to: obtain power information, which includes: the output power of each charging interface and the charging power required by each charging vehicle. Based on the power information obtained, the first target charging vehicle is stopped from charging, and the power distribution module is controlled to distribute the output power of the first target power module corresponding to the first target charging vehicle to the charging interface connected to the second target charging vehicle, wherein the charging power required by the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is allocated. Thereby, one or more charging vehicles are stopped from charging, the power modules occupied by these charging vehicles are released, and the released power modules are distributed to charging vehicles whose charging power requirements are not met, thereby improving power utilization.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging device and a power distribution method. Background Art

[0002] At present, the power requirements of charging vehicles vary more and more. Some models support a maximum charging power of 480KW, some support a maximum charging power of 180KW, and some support a maximum charging power of less than 60KW. In order to meet the power requirements of different charging vehicles, charging equipment that supports mixed charging with different charging powers has been launched on the market.

[0003] However, when multiple charging vehicles with different charging power requirements are charged by charging equipment at the same time, charging of slow-charging vehicles or low-power vehicles with high battery remaining capacity (State Of Charge, SOC) will occupy a certain number of power modules. When the charging power requirements of other charging vehicles are large (such as high-power fast charging), the charging utilization rate of the power modules occupied by slow-charging vehicles or low-power vehicles with high battery SOC may be low, resulting in insufficient maximum power that the charging equipment can output, thereby failing to improve power utilization. Summary of the invention

[0004] The embodiments of the present application provide a charging device and a power distribution method to improve power utilization.

[0005] In the first aspect, an embodiment of the present application provides a charging device, which may include: multiple power modules, a power distribution module, a main controller, and multiple charging interfaces. Among them, the output ends of the multiple power modules are connected to multiple charging interfaces through the power distribution module, and each charging interface is connected to the charging gun through a cable in a one-to-one correspondence. In addition, the power module is used to output direct current, the charging interface is used to connect the charging vehicle, and the power distribution module is used to distribute the power output by the power module to the charging interface. During operation, the power distribution module can distribute a certain number of power modules to the corresponding charging interface, so that the power output by the power module is output to the allocated charging interface, and the charging interface is then connected to the charging vehicle through the charging gun to charge the power battery of the charging vehicle.

[0006] In addition, the multiple power modules may include a first target power module and a second target power module, wherein the first target power module is used to charge the first target charging vehicle, and the second target power module is used to charge the second target charging vehicle. In addition, the main controller can obtain power information, which includes: the output power of each charging interface, and the charging demand power of each charging vehicle obtained by communicating with each vehicle. Therefore, based on the acquired power information, the first target charging vehicle can be stopped from charging, and the power allocation module can be controlled to allocate the power output of the first target power module corresponding to the first target charging vehicle to the charging interface connected to the second target charging vehicle, and the charging demand power of the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is allocated. With this setting, one or more charging vehicles can be stopped from charging, the power modules occupied by the part of the charging vehicles can be released, and the released power modules can be allocated to the charging vehicles whose charging demand power is not met, so that the power can be dispatched to the charging vehicles whose charging demand power is not met, thereby improving the power utilization rate.

[0007] Exemplarily, the charging device provided in the embodiments of the present application can be applied to a DC charging pile, for example, a split DC charging pile and an integrated DC charging pile, and can also be applied to a charging station.

[0008] Optionally, the power module can be connected to the AC power supply through multiple AC-DC (Alternating Current-DirectCurrent, AC-DC) modules. The input ends of the multiple AC-DC modules are connected to the AC power supply, the output ends of the multiple AC-DC modules are respectively connected to the positive DC bus and the negative DC bus, and the input ends of the multiple power modules are respectively connected to the positive DC bus and the negative DC bus. When the charging device is working, the AC-DC conversion circuit in the AC-DC module can convert the AC power (such as the mains) output by the AC power supply into DC power, and input the converted DC power to the positive DC bus and the negative DC bus. The power module regulates the voltage (such as boosting) of the DC power on the positive DC bus Bus+ and the negative DC bus Bus-. The power distribution module can distribute a certain number of power modules to the corresponding charging interface, so that the current output by the certain number of power modules is output to the charging interface, thereby outputting current to the charging vehicle through the charging gun to charge the power battery of the charging vehicle. Exemplarily, the power module may include a direct current-direct current (DC-DC) module, and the rated power of the power module may be the rated power of the DC-DC module.

[0009] Optionally, the power module may also be directly connected to an AC power source, convert the AC power (such as mains power) output by the AC power source into DC power, and output it to the corresponding charging interface through the power distribution module. Exemplarily, the power module may include an AC-DC module, and the rated power of the power module may be the rated power of the AC-DC module.

[0010] In addition, in the present application, the rated powers of different power modules may be the same, partially the same and partially different, or both different.

[0011] In the present application, the main controller can determine whether there is a problem of low power utilization of the power module based on the power information obtained. For example, the main controller can judge that there is a problem of low power utilization of the power module in response to the sum of the rated powers of the power modules corresponding to each charging interface being greater than the sum of the output powers of each charging interface, and the sum of the rated powers of the power modules corresponding to each charging interface being less than the sum of the charging demand powers of each charging vehicle, so that the first target charging vehicle can be stopped from charging. And after the first target charging vehicle stops charging, the main controller can control the power distribution module to disconnect the charging interface connected to the first target charging vehicle from the power module occupied by it, and release the power module corresponding to the charging interface connected to the first target charging vehicle, so that an unoccupied power module appears. And, after the first target charging vehicle stops charging, the power module is released again, which can also avoid the abnormal charging alarm of the first target charging vehicle.

[0012] In the present application, the first target charging vehicle may be determined from each charging vehicle by one or more determination methods. Exemplarily, the first target charging vehicle includes at least one of the following charging vehicles:

[0013] For a charging vehicle connected to a charging interface corresponding to the minimum output power, the minimum output power is the minimum value of the output powers of all charging interfaces;

[0014] The charging vehicle corresponding to the minimum charging demand power, the minimum charging demand power is the minimum value of the charging demand powers of all charging vehicles;

[0015] The charging vehicle corresponding to the maximum battery remaining capacity (State Of Charge, SOC), the maximum battery remaining capacity is the maximum value of the battery remaining capacity of each charging vehicle;

[0016] A charging vehicle connected to a charging interface corresponding to the first target output power, the first target output power is an output power of the output powers of the charging interfaces that is less than the first power threshold;

[0017] The charging vehicle corresponding to the first target charging requirement power, the first target charging requirement power is the charging requirement power of each charging vehicle that is less than the second power threshold;

[0018] The target battery remaining capacity corresponds to the charging vehicle, and the target battery remaining capacity is the battery remaining capacity of each charging vehicle that is greater than the battery remaining capacity threshold.

[0019] In the present application, the second target charging vehicle may be determined from each charging vehicle by one or more determination methods. Exemplarily, the second target charging vehicle includes at least one of the following charging vehicles:

[0020] The charging vehicle corresponding to the maximum charging demand power has the maximum charging demand power being the maximum value among the second target charging demand powers, and the second target charging demand power being the charging demand power among the charging vehicles that is greater than the output power of the corresponding charging interface;

[0021] The charging vehicle corresponding to the maximum demand value, the maximum demand value is the maximum value of the demand values ​​corresponding to each charging vehicle, the demand value corresponding to the charging vehicle is (BA) / C, A represents the output power of the charging interface corresponding to the charging vehicle before the first target power module is allocated, B represents the charging demand power of the charging vehicle, and C represents the rated power of the first target power module.

[0022] It is understandable that before allocating the first target power module, the first target power module occupied by the charging interface corresponding to the first target charging vehicle may be one or more. When there is one first target power module, the rated power of the first target power module can be determined as the rated power of the first target power module. When there are multiple first target power modules, the rated powers of the multiple first target power modules can be the same, so that the rated power can be determined as the rated power of one power module among the multiple first target power modules. Alternatively, the rated powers of the multiple first target power modules may also be different or partially the same and partially different. At this time, the rated power of the first target power module can be determined as the minimum value or maximum value or intermediate value or average value (such as arithmetic mean, weighted average, etc.) or any value of the rated power among the multiple first target power modules.

[0023] In the present application, the first target charging vehicle may also be determined from the remaining charging vehicles except the first target charging vehicle by one or more determination methods.

[0024] Exemplarily, the main controller can control the power distribution module to release all the power modules occupied by the charging interface connected to the first target charging vehicle. Alternatively, the main controller can also control the power distribution module to release the second number of power modules occupied by the charging interface connected to the first target charging vehicle, and make the second number less than or equal to the number of power modules still lacking in the second target charging vehicle, and make the second number less than or equal to the total number of power modules corresponding to the first target charging vehicle, thereby releasing the second number of power modules occupied by the charging interface connected to the first target charging vehicle. With this arrangement, it is possible to avoid too many released power modules. Based on this, the main controller can control the power distribution module to allocate the first number of first target power modules among the released power modules to the charging interface of the second target charging vehicle. Among them, the first number can be less than or equal to the total number of power modules corresponding to the first target charging vehicle, or the first number can be less than or equal to the second number. With this device, it is possible to avoid too many first target power modules allocated to the charging interface connected to the second target charging vehicle, resulting in power waste.

[0025] The main controller can also determine a third target charging vehicle from each charging vehicle, and the third target charging vehicle is a charging vehicle being charged. Among them, in the process of charging the third target charging vehicle, the required charging demand power will decrease with the increase of charging time. When the charging demand power is reduced by the rated power of a third target power module (the third target power module is one of the power modules occupied by the charging interface connected to the third target charging vehicle), the main controller will also control the power distribution module to disconnect the charging interface connected to the third target charging vehicle from a third target power module, so that the output power of the third target power module is zero. With this setting, there will be an unoccupied third target power module. Based on this, the main controller determines one or more third target power modules from the unoccupied third target power modules according to the charging demand power of the first target charging vehicle, and controls the power distribution module to distribute the determined third target power modules to the charging interface connected to the first target charging vehicle, so that the first target charging vehicle can resume charging. It is understandable that the third target charging vehicle can be one or more of the remaining charging vehicles except the first target charging vehicle. For example, the third target charging vehicle can be the second target charging vehicle. Then, the second target power module corresponding to the second target charging vehicle is released as the third target power module, and the third target power module is allocated to the charging interface connected to the first target charging vehicle. Alternatively, the third target charging vehicle can also be other charging vehicles except the first target charging vehicle and the second target charging vehicle.

[0026] In order to realize the allocation and release of the power modules, the power allocation module may include a plurality of switches, which are used to connect and disconnect the power modules with the corresponding charging interfaces. Based on this, the main controller is further used to control the plurality of switches to disconnect the power modules to be released from the corresponding charging interfaces, and connect the power modules to be allocated to the corresponding charging interfaces.

[0027] In the present application, the first target charging vehicle may be stopped and resumed charging by one or more methods.

[0028] For example, the main controller is further used to: send a charging pause instruction to the first target charging vehicle, and the first target charging vehicle can suspend charging in response to the charging pause instruction, so that the first target charging vehicle stops charging. And the main controller is also used to: send a suspension end instruction to the first target charging vehicle, and the first target charging vehicle can end the suspension charging in response to the suspension end instruction, so that the first target charging vehicle can resume charging.

[0029] For example, the charging device also includes: a plurality of contactors, which correspond one-to-one to the above-mentioned plurality of charging interfaces, and each charging interface is connected to the power distribution module through a contactor. Then, the main controller is also used to: control the contactor connected to the charging interface corresponding to the first target charging vehicle to be disconnected, so that the charging interface is disconnected from the power distribution module, so that the charging interface has no power input, and the charging interface has no current, voltage or power output, so that the first target charging vehicle stops charging. And, the main controller is also used to: control the contactor connected to the charging interface corresponding to the first target charging vehicle to be turned on, so as to connect the charging interface to the power distribution module, so that when the charging interface outputs current, voltage or power, the first target charging vehicle can be charged.

[0030] For example, the main controller is also used to: send a charging pause instruction to the first target charging vehicle, so that the first target charging vehicle stops charging, and then controls the contactor of the charging interface corresponding to the first target charging vehicle to disconnect, so that the first target charging vehicle stops charging. And the main controller is also used to: send a pause end instruction to the first target charging vehicle, and then controls the contactor of the charging interface corresponding to the first target charging vehicle to conduct, so that the first target charging vehicle resumes charging.

[0031] The above-mentioned method of stopping charging and resuming charging of the first target charging vehicle can be applied to an integrated DC charging pile and a split DC charging pile.

[0032] In a split DC charging pile, the charging device also includes: a plurality of terminal controllers, and the plurality of terminal controllers correspond one to one with the plurality of charging interfaces. For example, the main controller is also used to: control the terminal controller corresponding to the first target charging vehicle to send a charging pause instruction to the first target charging vehicle, and the first target charging vehicle suspends charging in response to the charging pause instruction, so that the first target charging vehicle stops charging. And the main controller is also used to: control the terminal controller corresponding to the first target charging vehicle to send a suspension end instruction to the first target charging vehicle, so that the first target charging vehicle ends the suspension charging, thereby charging the first target charging vehicle.

[0033] For example, the charging device also includes: a plurality of contactors, which correspond one-to-one to the above-mentioned plurality of charging interfaces, and each charging interface is connected to the power distribution module through a contactor. Then, the main controller is also used to: control the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the corresponding charging interface so that the charging interface is disconnected from the power distribution module, and the charging interface has no current, voltage or power output, so that the first target charging vehicle stops charging. And the main controller is also used to: control the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the corresponding charging interface so that the charging interface is connected to the power distribution module, and when the charging interface outputs current, voltage or power, the first target charging vehicle can be charged.

[0034] For example, the main controller is also used to: control the terminal controller corresponding to the first target charging vehicle to send a charging pause instruction to the first target charging vehicle, and then control the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the corresponding charging interface to stop charging the first target charging vehicle. And the main controller is also used to: control the terminal controller corresponding to the first target charging vehicle to send a pause end instruction to the first target charging vehicle, and then control the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the corresponding charging interface to resume charging the first target charging vehicle.

[0035] On the second aspect, the embodiment of the present application also provides a power allocation method, including: obtaining power information, and based on the power information, stopping charging of the first target charging vehicle, the power information includes: the output power of each charging interface and the charging demand power of each charging vehicle. And, controlling the power output of the first target power module corresponding to the first target charging vehicle to be allocated to the charging interface connected to the second target charging vehicle, the charging demand power of the second target charging vehicle being greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is allocated. With this arrangement, one or more charging vehicles can be stopped from charging, the power modules occupied by these charging vehicles can be released, and the released power modules can be allocated to charging vehicles whose charging demand power is not met, so that the power can be dispatched to the charging vehicles whose charging demand power is not met, thereby improving the power utilization rate.

[0036] Exemplarily, based on obtaining power information, stopping charging of the first target charging vehicle includes: in response to the sum of the rated powers of the power modules corresponding to the respective charging interfaces being greater than the sum of the output powers of the respective charging interfaces, and the sum of the rated powers of the power modules corresponding to the respective charging interfaces being less than the sum of the charging demand powers of the respective charging vehicles, stopping charging of the first target charging vehicle.

[0037] In the present application, the first target charging vehicle may be determined from each charging vehicle by one or more determination methods. Exemplarily, the first target charging vehicle includes at least one of the following charging vehicles:

[0038] For a charging vehicle connected to a charging interface corresponding to the minimum output power, the minimum output power is the minimum value of the output powers of all charging interfaces;

[0039] The charging vehicle corresponding to the minimum charging demand power, the minimum charging demand power is the minimum value of the charging demand powers of all charging vehicles;

[0040] The charging vehicle corresponding to the maximum battery remaining capacity, the maximum battery remaining capacity is the maximum value among the battery remaining capacities of the charging vehicles;

[0041] A charging vehicle connected to a charging interface corresponding to the first target output power, the first target output power is an output power of the output powers of the charging interfaces that is less than the first power threshold;

[0042] The charging vehicle corresponding to the first target charging requirement power, the first target charging requirement power is the charging requirement power of each charging vehicle that is less than the second power threshold;

[0043] The target battery remaining capacity corresponds to the charging vehicle, and the target battery remaining capacity is the battery remaining capacity of each charging vehicle that is greater than the battery remaining capacity threshold.

[0044] In the present application, the second target charging vehicle may be determined from each charging vehicle by one or more determination methods. Exemplarily, the second target charging vehicle includes at least one of the following charging vehicles:

[0045] The charging vehicle corresponding to the maximum charging demand power has the maximum charging demand power being the maximum charging demand power among the second target charging demand powers, and the second target charging demand power being the charging demand power among the charging vehicles that is greater than the corresponding output power;

[0046] The charging vehicle corresponding to the maximum demand value, the maximum demand value is the maximum value of the demand values ​​corresponding to each charging vehicle, the demand value corresponding to the charging vehicle is (BA) / C, A represents the output power of the charging vehicle before allocating the first target power module, B represents the charging demand power of the charging vehicle, and C represents the rated power of the first target power module.

[0047] It is understandable that before allocating the first target power module, the first target power module occupied by the charging interface corresponding to the first target charging vehicle may be one or more. When there is one first target power module, the rated power of the first target power module can be determined as the rated power of the first target power module. When there are multiple first target power modules, the rated powers of the multiple first target power modules can be the same, so that the rated power of the first target power module can be determined as the rated power of one power module among the multiple first target power modules. Alternatively, the rated powers of the multiple first target power modules may also be different or partially the same and partially different. At this time, the rated power of the first target power module can be determined as the minimum value or maximum value or intermediate value or average value (such as arithmetic mean, weighted average, etc.) or any value of the rated power among the multiple first target power modules.

[0048] In the present application, the first target charging vehicle may also be determined from the remaining charging vehicles except the first target charging vehicle by one or more determination methods.

[0049] Exemplarily, controlling the first target power module corresponding to the first target charging vehicle to be allocated to the charging interface connected to the second target charging vehicle may include: controlling a first number of first target power modules to be allocated to the charging interface connected to the second target charging vehicle, wherein the first number is less than or equal to the total number of power modules corresponding to the first target charging vehicle.

[0050] Exemplarily, the method may further include: controlling a third target power module to be allocated to a charging interface connected to the first target charging vehicle, and the output power of the third target power module is zero.

[0051] In the present application, the first target charging vehicle may be stopped and resumed charging by one or more methods.

[0052] Exemplarily, the method further includes: sending a charging pause instruction to the first target charging vehicle to stop charging the first target charging vehicle, and sending a pause end instruction to the first target charging vehicle to resume charging the first target charging vehicle.

[0053] Exemplarily, the method further includes: controlling the contactor connected to the charging interface corresponding to the first target charging vehicle to be disconnected, so that the first target charging vehicle stops charging, and controlling the contactor connected to the charging interface corresponding to the first target charging vehicle to be turned on, so that the first target charging vehicle resumes charging.

[0054] Exemplarily, it also includes: sending a charging pause instruction to the first target charging vehicle, then controlling the contactor connected to the charging interface corresponding to the first target charging vehicle to be disconnected, so that the first target charging vehicle stops charging. And sending a pause end instruction to the first target charging vehicle, then controlling the contactor connected to the charging interface corresponding to the first target charging vehicle to be turned on, so that the first target charging vehicle resumes charging.

[0055] The above-mentioned method of stopping charging and resuming charging of the first target charging vehicle can be applied to an integrated DC charging pile and a split DC charging pile.

[0056] In the split DC charging pile, the charging device also includes: multiple terminal controllers, and the multiple terminal controllers correspond to the multiple charging interfaces one by one. Exemplarily, it also includes: controlling the terminal controller corresponding to the first target charging vehicle to send a pause charging instruction to the first target charging vehicle, so that the first target charging vehicle stops charging. And controlling the terminal controller corresponding to the first target charging vehicle to send a pause end instruction to the first target charging vehicle, so that the first target charging vehicle resumes charging.

[0057] Exemplarily, the method further includes: controlling the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the corresponding charging interface, so that the first target charging vehicle stops charging. Also, controlling the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the corresponding charging interface, so that the first target charging vehicle is charged.

[0058] Exemplarily, it also includes: controlling the terminal controller corresponding to the first target charging vehicle to send a charging pause instruction to the first target charging vehicle, and then controlling the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the corresponding charging interface to stop charging the first target charging vehicle. And controlling the terminal controller corresponding to the first target charging vehicle to send a pause end instruction to the first target charging vehicle, and then controlling the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the corresponding charging interface to resume charging the first target charging vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 A schematic diagram of a charging scenario provided for an embodiment of the present application;

[0060] Figure 2 A schematic diagram of the structure of a charging device provided in one embodiment of the present application;

[0061] Figure 3 A schematic diagram of a charging scenario of a charging device provided in an embodiment of the present application;

[0062] Figure 4 A schematic diagram of the structure of a charging device in a charging scenario provided by yet another embodiment of the present application;

[0063] Figure 5 A schematic diagram of the structure of a charging device in a charging scenario provided by yet another embodiment of the present application;

[0064] Figure 6 A schematic diagram of the structure of a charging device provided in yet another embodiment of the present application;

[0065] Figure 7 A schematic diagram of the structure of a charging device provided in yet another embodiment of the present application;

[0066] Figure 8 A schematic diagram of the structure of a charging device provided in yet another embodiment of the present application;

[0067] Fig. 9 A flowchart of a power allocation method provided in one embodiment of the present application.

[0068] Reference numerals:

[0069] 100\100a\100b\100c-charging vehicle; 110-charging input interface; 120-power battery; 130-vehicle management system; 140-motor; 150-wheel; 200-charging equipment; 210-charging gun; 220-cable; 230-charging host; 240-charging terminal; 231-AC-DC module; Bus+-positive DC bus; Bus--negative DC bus; 232a\232b\232c\232d\232e\232f\232g\232h-power module; 233-power distribution module; 234a\234b\234c-contactor; 241a\241b\241c-charging interface; 242a\242b\242c-terminal controller; 250-main controller; 300-AC power supply. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. In the embodiments of the present application, "connection" refers to electrical connection, and the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, A and B are connected, which can be either A and B directly connected, or A and B are indirectly connected through one or more other electrical components. For example, A and B are connected, or A and C are directly connected, C and B are directly connected, and A and B are connected through C.

[0071] Figure 1 A schematic diagram of a charging scenario provided by an embodiment of the present application. Figure 1, the charging vehicle 100 is also called a new energy vehicle, which is a vehicle that can be driven by electric energy. It should be understood that the charging vehicle 100 can be a pure electric-powered electric vehicle or a hybrid-powered hybrid vehicle. Exemplarily, the charging vehicle 100 mainly includes: a charging input interface 110, a power battery 120, a vehicle management system 130, a motor 140 and a wheel 150, etc. Among them, the power battery 120 is a large-capacity, high-power battery. The power battery 120 can provide power to some or all components of the charging vehicle 100. In some examples, the power battery 120 can be composed of one or more rechargeable lithium-ion or lead-acid batteries. In addition, the power battery 120 can also use other battery materials and configurations, which are not limited here. When the charging vehicle 100 is driving, the power battery 120 supplies power to the motor 140, and the motor 140 converts the power energy provided by the power battery 120 into mechanical energy, drives the wheel 150 to rotate, and realizes the driving of the charging vehicle 100. And, when the charging vehicle 100 is charged, the power battery 120 of the charging vehicle 100 can be charged through the charging device 200. The charging device 200 is connected to an AC power source, and the charging device 200 is connected to a charging gun 210 through a cable 220. The operator can insert the charging gun 210 into the charging input interface 110 of the charging vehicle 100, and the charging device 200 then charges the power battery 120 through the charging gun 210. It is understood that the vehicle management system includes but is not limited to a battery management system (Battery Management System, BMS).

[0072] The charging device provided in the embodiment of the present application can be applied to a DC charging pile, for example, a split DC charging pile and an integrated DC charging pile, and can also be applied to a charging station. It is understandable that the charging device proposed in the embodiment of the present application is intended to include but is not limited to being applied to these and any other suitable types of equipment. The following takes the two application scenarios of the charging device being applied to a split DC charging pile and an integrated DC charging pile as examples to explain the technical solution of the present application.

[0073] Figure 2 This is a schematic diagram of the structure of a charging device provided by an embodiment of the present application. Figure 2In the embodiment of the present application, the charging device 200 can be set as a split DC charging pile. The charging device 200 includes: multiple alternating current-direct current (AC-DC) modules 231, a positive DC bus Bus+, a negative DC bus Bus-, multiple power modules 232a~232h, a power distribution module 233, multiple contactors 234a~234c, multiple charging interfaces 241a~241c, a main controller 250, multiple terminal controllers 242a~242c, a cable 220 and a charging gun 210. Among them, the input ends of the multiple AC-DC modules 231 are connected to the AC power supply 300, the output ends of the multiple AC-DC modules 231 are respectively connected to the positive DC bus Bus+ and the negative DC bus Bus-, the input ends of the multiple power modules are respectively connected to the positive DC bus Bus+ and the negative DC bus Bus-, and the output ends of the multiple power modules are connected to the power distribution module 233, the power distribution module 233 is connected to the charging interface 241a through the contactor 234a, the power distribution module 233 is connected to the charging interface 241b through the contactor 234b, and the power distribution module 233 is connected to the charging interface 241c through the contactor 234c. And, each charging interface 241a~241c is connected to the charging gun 210 one-to-one through the cable 220. In addition, the present application does not limit the number of AC-DC modules 231 and the number of power modules, which can be determined according to the needs of actual applications.

[0074] When the charging device 200 is working, the AC-DC conversion circuit in the AC-DC module 231 can convert the AC power (such as the mains) output by the AC power supply 300 into DC power, and input the converted DC power into the positive DC bus Bus+ and the negative DC bus Bus-. The power module regulates the voltage (such as boosting) of the DC power on the positive DC bus Bus+ and the negative DC bus Bus-. The power distribution module 233 distributes a certain number of power modules to the corresponding charging interface, and the contactor corresponding to the charging interface is turned on so that the current output by the certain number of power modules is output to the charging interface, thereby outputting the current to the charging vehicle through the charging gun 210. In addition, the AC-DC module 231 and the power module have rated powers respectively. The rated powers of different AC-DC modules 231 can be the same, partially the same and partially different, or all different. The main controller can communicate with the AC-DC module 231 to obtain the rated power, output power, etc. of the AC-DC module 231. In addition, the rated powers of different power modules can be the same, partially the same and partially different, or all different. The main controller 250 can communicate with the power modules 232a to 232h to obtain the rated power, output power, etc. of the power modules. Optionally, the power module includes a direct current-direct current (DC-DC) module, and the rated power of the power module can be the rated power of the DC-DC module, and the rated power of different DC-DC modules can be the same, partially the same and partially different, or all different. Among them, the DC-DC conversion circuit in the DC-DC module can adjust the voltage (for example, boost) of the DC power on the positive DC bus Bus+ and the negative DC bus Bus-, and then output it to the assigned charging interface.

[0075] It is understandable that, during the charging process of the charging vehicle, the contactor of the charging interface connected to the charging vehicle is turned on, so that the power output by the power module can be input to the charging interface.

[0076] Generally, the main structure of the split DC charging pile includes a charging host 230 and a charging terminal 240. Among them, the charging host 230 can be provided with the above-mentioned multiple AC-DC modules 231, the positive DC bus Bus+, the negative DC bus Bus-, multiple power modules 232a~232h, a power distribution module 233 and a main controller 250. The first charging terminal 240 is provided with the above-mentioned terminal controller 242a, contactor 234a, charging interface 241a, cable 220 and charging gun 210. The second charging terminal 240 is provided with the above-mentioned terminal controller 242b, contactor 234b, charging interface 241b, cable 220 and charging gun 210. The third charging terminal 240 is provided with the above-mentioned terminal controller 242c, contactor 234c, charging interface 241c, cable 220 and charging gun 210. It is understandable that, in addition to the above-mentioned structures, the charging host 230 and the charging terminal 240 may also be provided with other structures (for example, protection devices, heat dissipation devices, power distribution devices, etc.), which are not limited here. In addition, the present application does not limit the number of charging terminals 240. For example, two, three or more charging terminals 240 may be provided. In addition, the present application does not limit the number of charging guns 210 possessed by each charging terminal 240. For example, each charging terminal 240 may have one, two, three or more charging guns 210. The present application takes three charging terminals 240, each of which is provided with a charging gun 210 as an example.

[0077] The present application does not limit the specific implementation of the power distribution module. For example, the power distribution module may include multiple switches that can connect and disconnect the power module and the corresponding charging interface. With this arrangement, a path and a circuit can be formed between the power module and the corresponding charging interface. It is understandable that the switch in the embodiment of the present application may be a relay, a contactor, etc.

[0078] In addition to executing the functions in this application, the terminal controller and the main controller in this application can also execute the functions in the prior art, which will not be described in detail here. This application does not limit the specific implementation methods of the main controller and the terminal controller. For example, the main controller and the terminal controller can be a general central processing unit (CPU), a general processor, a digital signal processing (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The above-mentioned processor can also be a combination that realizes computing functions, such as a combination of one or more microprocessors, a combination of DSP and microprocessors, etc.

[0079] Figure 3 A schematic diagram of a charging scenario of a charging device provided in an embodiment of the present application, Figure 4 This is a schematic diagram of the structure of a charging device in a charging scenario provided by another embodiment of the present application. Figure 3 and Figure 4, taking three charging vehicles 100a~100c as an example, if the charging vehicle 100a is charged by connecting the charging port 241a through the charging gun 210, the charging vehicle 100b is charged by connecting the charging port 241b through the charging gun 210, and the charging vehicle 100c is charged by connecting the charging port 241c through the charging gun 210, the main controller 250 can communicate with the vehicle management system in each charging vehicle 100a~100c respectively, and the vehicle management system in each charging vehicle 100a~100c can report its charging demand power, battery remaining capacity (State Of Charge, SOC) and other data to the main controller 250, and the main controller 250 can obtain the charging demand power of each charging vehicle 100a~100c. And, the rated power of each power module 232a~232h can be stored in the main controller 250 in advance, or it can be obtained by communicating with the power controller in each power module 232a~232h. Based on this, the main controller 250 can obtain the rated power of the power module occupied by each charging interface 241a~241c. It can be understood that the power module occupied by the charging interface refers to the power module connected to the charging interface through the switch in the power distribution module 233. In addition, the terminal controllers 242a~242c can monitor the output power of the corresponding charging interface 241a~241c in real time or periodically, and report the output power of the corresponding charging interface 241a~241c to the main controller 250, and the main controller 250 can obtain the output power of each charging interface 241a~241c. Alternatively, the main controller 250 can also directly monitor the output power of the charging interface 241a~241c in real time or periodically to obtain the output power of each charging interface 241a~241c.

[0080] The main controller 250 can determine whether there is a problem of low power utilization rate of the power module based on the output power of each charging interface 241a-241c obtained, the rated power of the power module occupied by each charging interface 241a-241c, and the charging demand power of each charging vehicle 100a-100c. For example, when the condition M2<M1<M3 is satisfied (M1 represents the sum of the rated powers of the power modules occupied by each charging interface 241a-241c, M2 represents the sum of the output powers of each charging interface 241a-241c, and M3 represents the sum of the charging demand powers of each charging vehicle 100a-100c) or other possible conditions, it indicates that there is a problem of low power utilization rate of the power module, and thus the first target charging vehicle and the second target charging vehicle can be determined from the charging vehicles 100a-100c. Among them, the charging demand power of the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is allocated, that is, the second target charging vehicle is a vehicle whose actual charging power is less than the charging demand power. Based on this, the main controller 250 can stop the charging of the first target charging vehicle, and after the first target charging vehicle stops charging, control the switch in the power distribution module 233 to disconnect the path between the charging interface connected to the first target charging vehicle and the corresponding power module, and release the power module occupied by the charging interface connected to the first target charging vehicle. And, after the first target charging vehicle stops charging and then releases the power module, it can also prevent the first target charging vehicle from reporting an abnormal charging alarm.

[0081] Since the power module is released, the main controller 250 can also control the switch in the power distribution module 233 to conduct the first target power module among the released power modules with the charging interface connected to the second target charging vehicle, so as to allocate the power output by the first target power module to the charging interface connected to the second target charging vehicle. Among them, the charging demand power of the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is allocated, that is, the second target charging vehicle is a vehicle whose charging demand power is not satisfied. With this setting, in the embodiment of the present application, one or more charging vehicles can be paused from charging, the power modules occupied by these charging vehicles can be released, and the released power modules can be allocated to the charging vehicles whose charging demand powers are not satisfied, so that the power is scheduled to the charging vehicles whose charging demand powers are not satisfied, improving the power utilization rate of the power module and enhancing the overall charging utilization rate of the charging device.

[0082] In the present application, the first target charging vehicle can be determined from the charging vehicles 100a-100c through one or more determination methods. The following will be described in detail with examples. It can be understood that the following embodiments are for better explaining the present application, but not for limiting the present application.

[0083] Method 1: The main controller 250 can determine the minimum value from the output power SPa of the charging interface 241a, the output power SPb of the charging interface 241b, and the output power SPc of the charging interface 241b, and determine this minimum value as the minimum output power. For example, if SPc > SPa > SPb, then the output power SPb is the minimum output power. Thus, the charging vehicle 100b connected to the charging interface 241b corresponding to the minimum output power SPb can be determined as the first target charging vehicle, so that the charging vehicle 100b can stop charging. It can be understood that the output powers Spa to SPc are the output powers of the charging interfaces 241a to 241c before allocating the first target power module.

[0084] Method 2: The main controller 250 can compare the output power SPa of the charging interface 241a, the output power SPb of the charging interface 241b, and the output power SPc of the charging interface 241b with the first power threshold SPw. If Spa > Spw, Spc > Spw, and Spb < Spw, then the output power SPb can be determined as the first target output power. Thus, the charging vehicle 100b connected to the charging interface 241b corresponding to the output power SPb can be determined as the first target charging vehicle, so that the charging vehicle 100b can stop charging. Or, if Spa < Spw, Spc > Spw, and Spb < Spw, then the output powers SPa and SPb can be determined as the first target output powers. Thus, the charging vehicle 100a connected to the charging interface 241a corresponding to the output power SPa and the charging vehicle 100b connected to the charging interface 241b corresponding to the output power SPb can both be determined as the first target charging vehicles, so that both the charging vehicles 100a and 100b can stop charging. It can be understood that the present application does not limit the first power threshold SPw, and it can be determined according to the requirements of actual applications. Exemplarily, the first power threshold can be determined according to the rated power of the power module (i.e., the DC-DC module). For example, the first power threshold is Q * P, where 0 < Q ≤ 1 (or 0 < Q ≤ 0.5, 0 < Q ≤ 0.25, 0 < Q ≤ 0.1), and P represents the rated power of the power module (i.e., the DC-DC module).

[0085] Method 3: The main controller 250 can determine the minimum value from the charging demand power SQa of the charging vehicle 100a, the charging demand power SQb of the charging vehicle 100b, and the charging demand power SQc of the charging vehicle 100c, and determine this minimum value as the minimum charging demand power. For example, if SQc > SQa > SQb, then the charging demand power SQb is the minimum charging demand power. Thus, the charging vehicle 100b corresponding to the minimum charging demand power SQb can be determined as the first target charging vehicle, so that the charging vehicle 100b can stop charging.

[0086] Method 4: The master controller 250 can compare the charging demand power SQa of the charging vehicle 100a, the charging demand power SQb of the charging vehicle 100b, and the charging demand power SQc of the charging vehicle 100c with the second power threshold SQw. If SQa > SQw, SQc > SQw, and SQb < SQw, the charging demand power SQb can be determined as the first target charging demand power, and thus the charging vehicle 100b corresponding to the first target charging demand power SQb can be determined as the first target charging vehicle. Alternatively, if SQa < SQw, SQc > SQw, and SQb < SQw, the charging demand powers SQa and SQb can be determined as the first target charging demand power, and thus the charging vehicle 100a corresponding to the charging demand power SQa and the charging vehicle 100b corresponding to the charging demand power SQb can both be determined as the first target charging vehicles, so that the charging vehicles 100a and 100b can both stop charging. It can be understood that the second power threshold in this application is not limited and can be determined according to the actual application requirements. Exemplarily, the second power threshold can be determined according to the rated power of the power module (i.e., the DC-DC module). For example, the second power threshold is K*P, where 0 < K ≤ 1 (or 0 < K ≤ 0.5, 0 < K ≤ 0.25, 0 < K ≤ 0.1).

[0087] Method 5: The master controller 250 can determine the maximum value from the remaining battery capacity SCa of the charging vehicle 100a, the remaining battery capacity SCb of the charging vehicle 100b, and the remaining battery capacity SCc of the charging vehicle 100c, and determine this maximum value as the maximum remaining capacity. For example, if SCb > SCa > SCc, the remaining battery capacity SCb is the maximum remaining capacity. Thus, the charging vehicle 100b corresponding to the remaining battery capacity SCb can be determined as the first target charging vehicle, so that the charging vehicle 100b can stop charging.

[0088] Method 6: The master controller 250 can compare the remaining battery capacity SCa of the charging vehicle 100a, the remaining battery capacity SCb of the charging vehicle 100b, and the remaining battery capacity SCc of the charging vehicle 100c with the remaining battery capacity threshold SCw. If SCb > SCw, SCa < SCw, and SCc < SCw, then the remaining battery capacity SCb can be determined as the target remaining battery capacity. Thus, the charging vehicle 100b corresponding to the target remaining battery capacity SCb can be determined as the first target charging vehicle, and the charging vehicle 100b can be stopped from charging. Alternatively, if SCb > SCw, SCa > SCw, and SCc < SCw, then the remaining battery capacity SCa and the remaining battery capacity SCb can be determined as the target remaining battery capacity. Thus, the charging vehicle 100a corresponding to the target remaining battery capacity SCa and the charging vehicle 100b corresponding to the target remaining battery capacity SCb can be determined as the first target charging vehicles, and the charging vehicles 100a and 100b can be stopped from charging. It can be understood that the present application does not limit the remaining battery capacity threshold, which can be determined according to the requirements of actual applications. Exemplarily, the remaining battery capacity threshold range can be 55% - 85%. For example, the remaining battery capacity threshold can be 55%, 60%, 75%, 80%, 85%.

[0089] In the present application, the second target charging vehicle can be determined from the charging vehicles 100a to 100c through one or more determination methods. The following will be described in detail with examples. It can be understood that the following embodiments are for better explaining the present application, but not for limiting the present application.

[0090] Method 1: The master controller 250 can compare the charging demand power SQa of the charging vehicle 100a with the output power SPa of the charging interface 241a, compare the charging demand power SQb of the charging vehicle 100b with the output power SPb of the charging interface 241b, and compare the charging demand power SQc of the charging vehicle 100c with the output power SPc of the charging interface 241c. If SQa > SPa and SQc > SPc, then the charging demand powers SQa and SQc can be determined as the second target charging demand powers. If SQc > SQa, then the second target charging demand power SQc can be determined as the maximum charging demand power, and the charging vehicle 100c corresponding to the maximum charging demand power SQc can be determined as the second target charging vehicle, so that the first target power module can be allocated to the charging interface 241c connected to the charging vehicle 100c.

[0091] Method 2: The main controller 250 can determine the demand value (BA) / C=(SQa-Spa) / P0 corresponding to the charging vehicle 100a according to the output power Spa of the charging interface 241a (the output power of the charging interface 241a before the first target power module is allocated), the charging demand power SQa of the charging vehicle 100a, and the rated power P0 of the first target power module. According to the output power Spb of the charging interface 241b (the output power of the charging interface 241b before the first target power module is allocated), the charging demand power SQb of the charging vehicle 100b, and the rated power P0 of the first target power module, the demand value (BA) / C=(SQb-Spb) / P0 corresponding to the charging vehicle 100b is determined. And, according to the output power Spc of the charging interface 241c (the output power of the charging interface 241c before the first target power module is allocated), the charging demand power SQc of the charging vehicle 100c, and the rated power P0 of the first target power module, the demand value (BA) / C corresponding to the charging vehicle 100c is determined to be (SQc-Spc) / P0. If (SQb-Spb) / P0<(SQa-Spa) / P0<(SQc-Spc) / P0, the maximum demand value is (SQc-Spc) / P0, based on which the charging vehicle 100c can be determined as the second target charging vehicle, so that the first target power module can be allocated to the charging interface 241c connected to the charging vehicle 100c.

[0092] In the present application, the second target charging vehicle can be determined from the remaining charging vehicles except the first target charging vehicle by one or more determination methods. The following is a detailed description with examples. It is understandable that the following embodiments are intended to better explain the present application, but are not intended to limit the present application.

[0093] Method 1: If the charging vehicle 100b is determined as the first target charging vehicle, the second target charging vehicle can be determined from the charging vehicles 100a and 100c. For example, the main controller 250 can compare the charging demand power SQa of the charging vehicle 100a with the output power SPa of the charging interface 241a, and compare the charging demand power SQc of the charging vehicle 100c with the output power SPc of the charging interface 241c. If SQa>SPa, SQc>SPc, the charging demand powers SQa and SQc can be determined as the second target charging demand power. If SQc>SQa, the second target charging demand power SQc can be determined as the maximum charging demand power, and the charging vehicle 100c corresponding to the maximum charging demand power SQc can be determined as the second target charging vehicle, so that the first target power module can be allocated to the charging interface 241c connected to the charging vehicle 100c.

[0094] Method 2: If the charging vehicle 100b is determined as the first target charging vehicle, the main controller 250 can determine the demand value (BA) / C=(SQa-Spa) / P0 corresponding to the charging vehicle 100a according to the output power Spa of the charging interface 241a (the output power of the charging interface 241a before the first target power module is allocated), the charging demand power SQa of the charging vehicle 100a, and the rated power P0 of the first target power module. And, according to the output power Spc of the charging interface 241c (the output power of the charging interface 241c before the first target power module is allocated), the charging demand power SQc of the charging vehicle 100c, and the rated power P0 of the first target power module, determine the demand value (BA) / C=(SQc-Spc) / P0 corresponding to the charging vehicle 100c. If (SQa-Spa) / P0<(SQc-Spc) / P0, the maximum demand value is (SQc-Spc) / P0, based on which the charging vehicle 100c can be determined as the second target charging vehicle, so that the first target power module can be allocated to the charging interface 241c connected to the charging vehicle 100c.

[0095] It is understandable that before allocating the first target power module, the first target power module occupied by the charging interface corresponding to the first target charging vehicle may be one or more. When there is one first target power module, the above-mentioned P0 can be determined as the rated power of the first target power module. When there are multiple first target power modules, the rated powers of the multiple first target power modules may be the same, so that the above-mentioned P0 can be determined as the rated power of one power module among the multiple first target power modules. Alternatively, the rated powers of the multiple first target power modules may also be different or partially the same and partially different. At this time, the above-mentioned P0 can be determined as the minimum value or maximum value or intermediate value or average value (such as arithmetic mean, weighted average, etc.) or any one value of the rated power among the multiple first target power modules.

[0096] Exemplarily, the main controller 250 can control the switch in the power distribution module 233 to disconnect all power modules occupied by the charging interface connected to the first target charging vehicle, thereby releasing all power modules occupied by the charging interface connected to the first target charging vehicle. Alternatively, the main controller 250 can also control the switch in the power distribution module 233 to disconnect the second number of power modules occupied by the charging interface connected to the first target charging vehicle, and make the second number less than or equal to the number of power modules still lacking in the second target charging vehicle, and make the second number less than or equal to the total number of power modules corresponding to the first target charging vehicle, thereby releasing the second number of power modules occupied by the charging interface connected to the first target charging vehicle. With this arrangement, too many power modules can be released. Based on this, the main controller 250 can control the switch in the power distribution module 233 to distribute the first number of first target power modules in the released power modules to the charging interface of the second target charging vehicle. Among them, the first number can be less than or equal to the total number of power modules corresponding to the first target charging vehicle, and the first number can also be less than or equal to the second number. By using this device, it is possible to avoid too many first target power modules being allocated to the charging interface connected to the second target charging vehicle, thereby causing power waste.

[0097] In addition, the main controller 250 can also determine a third target charging vehicle from each charging vehicle 100a~100c, and the third target charging vehicle is a charging vehicle being charged. In the process of charging the third target charging vehicle, the required charging demand power will decrease as the charging time increases. When the charging demand power decreases by the rated power of a third target power module (the third target power module is one of the power modules occupied by the charging interface connected to the third target charging vehicle), the main controller 250 will also control the switch in the power distribution module 233 to disconnect the charging interface connected to the third target charging vehicle from a third target power module, so that the output power of the third target power module is zero. With this setting, there will be an unoccupied third target power module. Based on this, the main controller 250 determines one or more third target power modules from the unoccupied third target power modules according to the charging demand power of the first target charging vehicle, and controls the switch in the power distribution module 233 to allocate the determined third target power modules to the charging interface connected to the first target charging vehicle, so that the first target charging vehicle can resume charging. It is understandable that the third target charging vehicle can be one or more of the remaining charging vehicles except the first target charging vehicle. For example, the third target charging vehicle can be the second target charging vehicle. Then, the second target power module corresponding to the second target charging vehicle is released as the third target power module, and the third target power module is allocated to the charging interface connected to the first target charging vehicle. Alternatively, the third target charging vehicle can also be other charging vehicles except the first target charging vehicle and the second target charging vehicle.

[0098] In the present application, the first target charging vehicle can be stopped and resumed charging in one or more ways. The following is a detailed description with examples. It is understandable that the following embodiments are intended to better explain the present application, but are not intended to limit the present application.

[0099] Mode 1: The main controller 250 can send a charging suspension instruction to the first target charging vehicle, and the first target charging vehicle suspends charging in response to the charging suspension instruction. At this time, the charging gun 210 connected to the first target charging vehicle does not pop up, that is, the charging gun 210 is still connected to the charging input interface of the first target charging vehicle, but the output power of the charging interface connected to the first target charging vehicle is zero, so that the first target charging vehicle stops charging. The main controller 250 can send a suspension end instruction to the first target charging vehicle, and the first target charging vehicle ends the suspension charging in response to the suspension end instruction, so that the first target charging vehicle resumes charging. It can be understood that the process of the first target charging vehicle suspending charging in response to the charging suspension instruction includes but is not limited to: the vehicle management system communicates with the main controller, reduces the charging demand power of the first target charging vehicle, and sends the reduced current and voltage demand information to the main controller, and the main controller controls the current and voltage of the charging interface connected to the first target charging vehicle to decrease until the main controller controls the current and voltage of the charging interface connected to the first target charging vehicle to decrease to 0, so that the output power of the charging interface is zero, and the first target charging vehicle stops charging.

[0100] Method 2: The main controller 250 can control the contactor of the charging interface corresponding to the first target charging vehicle to be disconnected, so that the charging interface has no power input, and the charging interface has no current, voltage or power output, so that the first target charging vehicle stops charging. In addition, the main controller 250 can control the contactor of the charging interface corresponding to the first target charging vehicle to be turned on to connect the charging interface to the power distribution module, and when the charging interface outputs current, voltage or power, the first target charging vehicle can resume charging.

[0101] Method 3: The main controller 250 may send a charging suspension instruction to the first target charging vehicle, and the first target charging vehicle suspends charging in response to the charging suspension instruction. After that, the main controller 250 may control the contactor of the charging interface corresponding to the first target charging vehicle to disconnect, so that the first target charging vehicle stops charging. Also, the main controller 250 may send a suspension end instruction to the first target charging vehicle, and the first target charging vehicle ends the suspension charging in response to the suspension end instruction. After that, the main controller 250 may control the contactor of the charging interface corresponding to the first target charging vehicle to conduct, so that the first target charging vehicle can resume charging.

[0102] Method 4: The main controller 250 can send a charging end instruction to the first target charging vehicle, and the first target charging vehicle responds to the charging end instruction to end charging. At this time, the charging gun 210 connected to the first target charging vehicle is ejected, and the charging gun 210 and the charging input interface of the first target charging vehicle are disconnected, so that the first target charging vehicle stops charging. The operator inserts the charging gun 210 into the charging input interface of the charging vehicle again, and the main controller 250 can send a charging instruction to the first target charging vehicle, and the first target charging vehicle responds to the charging instruction to enter the charging mode and resume charging.

[0103] Method 5: The main controller 250 can send a charging end instruction to the first target charging vehicle, and the first target charging vehicle responds to the charging end instruction to end charging. After that, the main controller 250 can control the contactor of the charging interface corresponding to the first target charging vehicle to disconnect, so that the first target charging vehicle stops charging. The operator inserts the charging gun 210 into the charging input interface of the charging vehicle again, and the main controller 250 can send a charging instruction to the first target charging vehicle. The first target charging vehicle responds to the charging instruction and can communicate with the main controller 250 to send its required charging power and other information to the main controller 250. After that, the main controller 250 can control the contactor of the charging interface corresponding to the first target charging vehicle to turn on, so that the first target charging vehicle can resume charging.

[0104] Method 6: The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a charging pause instruction to the first target charging vehicle, and the first target charging vehicle suspends charging in response to the charging pause instruction. The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a suspension end instruction to the first target charging vehicle, and the first target charging vehicle ends the suspension charging in response to the suspension end instruction, so that the first target charging vehicle can resume charging.

[0105] Method 7: The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the charging interface corresponding to the first target charging vehicle, so that the first target charging vehicle stops charging. The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the charging interface corresponding to the first target charging vehicle, so that the first target charging vehicle can resume charging.

[0106] Method eight: The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a charging suspension instruction to the first target charging vehicle. The first target charging vehicle suspends charging in response to the charging suspension instruction. After that, the main controller 250 can control the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the charging interface corresponding to the first target charging vehicle, so that the first target charging vehicle stops charging. The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a suspension end instruction to the first target charging vehicle. The first target charging vehicle ends the suspension charging in response to the suspension end instruction. After that, the main controller 250 can control the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the charging interface corresponding to the first target charging vehicle, so that the first target charging vehicle can resume charging.

[0107] Mode 9: The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a charging end instruction to the first target charging vehicle, and the first target charging vehicle responds to the charging end instruction to end charging, so that the first target charging vehicle stops charging. The operator inserts the charging gun 210 into the charging input interface of the charging vehicle again, and the main controller 250 can send a charging instruction to the first target charging vehicle, and the first target charging vehicle responds to the charging instruction to enter the charging mode and resume charging.

[0108] Method 10: The main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a charging end instruction to the first target charging vehicle, and the first target charging vehicle ends charging in response to the charging end instruction. After that, the main controller 250 can control the terminal controller corresponding to the first target charging vehicle to disconnect the contactor of the charging interface corresponding to the first target charging vehicle, so that the first target charging vehicle stops charging. The operator inserts the charging gun 210 into the charging input interface of the charging vehicle again, and the main controller 250 can control the terminal controller corresponding to the first target charging vehicle to send a charging instruction to the first target charging vehicle, and the first target charging vehicle enters the charging mode in response to the charging instruction. After that, the main controller 250 can control the terminal controller corresponding to the first target charging vehicle to turn on the contactor of the charging interface corresponding to the first target charging vehicle, so that the first target charging vehicle can resume charging.

[0109] Figure 5 This is a schematic diagram of the structure of a charging device in a charging scenario provided by another embodiment of the present application. Figure 4 and Figure 5, with the dotted line in the power distribution module 233 indicating that the power module and the corresponding charging interface are connected. Among them, take 8 power modules and each power module has a rated power of 60kw, and the maximum output power of a charging interface is 480kw as an example. If the charging vehicle 100a is connected to the charging interface 241a through the charging gun 210 for charging, and the charging vehicle 100b is connected to the charging interface 241b through the charging gun 210 for charging. Among them, the charging demand power required by the charging vehicle 100a is 120kw, and the vehicle management system in the charging vehicle 100a reports the charging demand power of 120kw to the main controller 250. The main controller 250 can control the switch in the power distribution module 233 to connect the two power modules 232a, 232b with the charging interface 241a, so that the charging interface 241a occupies the two power modules 232a, 232b, and the charging interface 241a outputs a charging power of 120kw to charge the power battery in the charging vehicle 100a. The charging power required by the charging vehicle 100b is 20kw. The vehicle management system in the charging vehicle 100b reports the charging power requirement of 20kw to the main controller 250. The main controller 250 can control the switch in the power distribution module 233 to connect a power module 232c with the charging interface 241b, so that the charging interface 241b occupies one power module 232c and the charging interface 241b outputs a charging power of 20kw. Later, there comes the charging vehicle 100c, which requires a charging power of 380kw. The vehicle management system in the charging vehicle 100c reports the charging power requirement of 380kw to the main controller 250. However, at this time, there are 5 unoccupied power modules 232d~232h left in the charging device 200. Since other power modules are occupied by other charging interfaces, the main controller 250 can only preferentially control the switch in the power distribution module 233 to connect these 5 power modules 232d~232h with the charging interface 241c, so that the maximum output power of the charging interface 241c is 300kw, resulting in the charging power requirement of the charging vehicle 100c cannot be met. To this end, the main controller 250 can send a charging pause instruction to the charging vehicle 100b, and the charging vehicle 100b pauses charging. The main controller 250 also controls the contactor 234b to disconnect, and the charging vehicle 100 stops charging. Thereby, the switch in the power distribution module 233 can be controlled to disconnect the power module 232c from the charging interface 241b (for example Figure 5"×" indicates a disconnection), and the power module 232c is connected to the charging interface 241c, thereby increasing the charging power of the charging vehicle 100c and improving the power utilization of the power module. Subsequently, if the charging demand power of the charging vehicle 100c is reduced by 60kw, the main controller 250 can control the switch in the power distribution module 233 to disconnect one of the power modules 232c to 232h (for example, 232g) from the charging interface 241c, and connect the power module (for example, 232g) to the charging interface 241b. A pause end instruction is sent to the charging vehicle 100b, and the charging vehicle 100b ends the pause charging. The main controller 250 also controls the contactor 234b to be turned on, so that the power output by the power module (for example, 232g) can be output to the charging interface 241b through the switch in the power distribution module 233 and the contactor 234b, so that the charging vehicle 100b resumes charging.

[0110] Figure 6 This is a schematic diagram of the structure of a charging device provided in another embodiment of the present application. Figure 6 In the embodiment of the present application, the charging device 200 can be set as a split DC charging pile. The charging device 200 may include: multiple power modules 232a-232h, a power distribution module 233, multiple contactors 234a-234c, multiple charging interfaces 241a-241c, a main controller 250, multiple terminal controllers 242a-242c, a cable 220, and a charging gun 210. The embodiment of the present application is different from the above Figure 2 The difference between the illustrated embodiments is that the power modules 232a to 232h are directly connected to the AC power supply 300, convert the AC power (such as the mains) of the AC power supply 300 into DC power, and output it to the corresponding charging interface through the power distribution module 233. In addition, the power modules 232a to 232h may include an AC-DC module, and the rated power of the power modules 232a to 232h may be the rated power of the AC-DC module. In addition, the rated powers of the AC-DC modules in different power modules may be the same, partially the same and partially different, or all different. The rest of the contents in the embodiments of the present application may be basically the same as those in the above embodiments, and will not be elaborated here.

[0111] Figure 7 This is a schematic diagram of the structure of a charging device provided in another embodiment of the present application. Figure 7 In the embodiment of the present application, the charging device 200 can be configured as an integrated DC charging pile. The charging device 200 may include: multiple AC-DC modules 231, multiple power modules 232a to 232h, a power distribution module 233, multiple contactors 234a to 234c, multiple charging interfaces 241a to 241c, a main controller 250, a cable 220, and a charging gun 210. The embodiment of the present application is different from the above Figure 2 The difference between the embodiments shown is that the integrated DC charging pile is not provided with a charging terminal 240, but directly uses a cable 220 to connect the charging gun 210 to the charging host 230. The charging host 230 of the integrated DC charging pile is provided with the above-mentioned multiple AC-DC modules 231, the positive DC bus Bus+ and the negative DC bus Bus-, multiple power modules 232a~232h, a power distribution module 233, multiple charging interfaces 241a~241c, a main controller 250, a cable 220 and a charging gun 210. In addition, the number of charging guns 210 can be two, three or more, which is not limited here. The rest of the contents in the embodiments of the present application may be basically the same as those in the above embodiments, and will not be repeated here.

[0112] Figure 8 This is a schematic diagram of the structure of a charging device provided in another embodiment of the present application. Figure 8 In the embodiment of the present application, the charging device 200 can be configured as an integrated DC charging pile. The charging device 200 may include: multiple power modules 232a-232h, a power distribution module 233, multiple contactors 234a-234c, multiple charging interfaces 241a-241c, a main controller 250, a cable 220, and a charging gun 210. The embodiment of the present application is different from the above Figure 7 The difference between the illustrated embodiments is that the power modules 232a to 232h are directly connected to the AC power supply 300, convert the AC power (such as the mains) of the AC power supply 300 into DC power, and output it to the corresponding charging interface through the power distribution module 233. In addition, the power modules 232a to 232h may include an AC-DC module, and the rated power of the power modules 232a to 232h may be the rated power of the AC-DC module. In addition, the rated powers of the AC-DC modules in different power modules may be the same, partially the same and partially different, or all different. The rest of the contents in the embodiments of the present application may be basically the same as those in the above embodiments, and will not be elaborated here.

[0113] Based on this, refer to Fig. 9 , Fig. 9 A flowchart of a power allocation method provided by an embodiment of the present application. The present application embodiment also provides a power allocation method, which may include:

[0114] S100, acquiring power information, and stopping charging of the first target charging vehicle based on the acquired power information. The power information includes: the output power of each charging interface and the charging required power of each charging vehicle;

[0115] S200, controlling the output power of the first target power module corresponding to the first target charging vehicle to be distributed to the charging interface connected to the second target charging vehicle. The charging demand power of the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is distributed.

[0116] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A charging device, comprising: A plurality of power supply modules, a power distribution module, a main controller and a plurality of charging interfaces, wherein the plurality of power supply modules are connected to the plurality of charging interfaces through the power distribution module; The multiple power modules include a first target power module and a second target power module, the first target power module is used to charge a first target charging vehicle, and the second target power module is used to charge a second target charging vehicle; The charging interface is used to: connect to a charging vehicle; The power distribution module is used to distribute the power output by the power supply module to the charging interface; It is characterized in that The main controller is used for: Acquiring power information, the power information including the output power of each of the charging interfaces and the charging power required by each of the charging vehicles; In response to the sum of the rated powers of the power modules corresponding to the charging interfaces being greater than the sum of the output powers of the charging interfaces, and the sum of the rated powers of the power modules corresponding to the charging interfaces being less than the sum of the charging power requirements of the charging vehicles, stopping the charging of the first target charging vehicle; The power distribution module is controlled to distribute the power output by the first target power module corresponding to the first target charging vehicle to the charging interface connected to the second target charging vehicle, and the charging demand power of the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is distributed.

2. The charging device according to claim 1, characterized in that: The first target charging vehicle includes at least one of the following charging vehicles: A charging vehicle connected to a charging interface corresponding to a minimum output power, wherein the minimum output power is the minimum value of the output powers of the charging interfaces; A charging vehicle corresponding to a minimum charging requirement power, wherein the minimum charging requirement power is the minimum value of the charging requirement powers of the charging vehicles; a charging vehicle corresponding to a maximum battery remaining capacity, wherein the maximum battery remaining capacity is a maximum value among the battery remaining capacities of the charging vehicles; A charging vehicle connected to a charging interface corresponding to a first target output power, wherein the first target output power is an output power of the output powers of the charging interfaces that is less than a first power threshold; a charging vehicle corresponding to a first target charging requirement power, wherein the first target charging requirement power is a charging requirement power of each of the charging vehicles that is less than a second power threshold; The target battery remaining capacity corresponds to a charging vehicle, wherein the target battery remaining capacity is a battery remaining capacity greater than a threshold value of the battery remaining capacity among the remaining capacities of the batteries of the charging vehicles.

3. The charging device according to any one of claims 1 or 2, characterized in that: The second target charging vehicle includes at least one of the following charging vehicles: The charging vehicle corresponding to the maximum charging demand power, the maximum charging demand power is the maximum value of the second target charging demand power, and the second target charging demand power is the charging demand power of each charging vehicle that is greater than the output power of its corresponding charging interface; The charging vehicle corresponding to the maximum demand value, the maximum demand value is the maximum value of the demand values ​​corresponding to each of the charging vehicles, the demand value corresponding to the charging vehicle is (BA) / C, A represents the output power of the charging interface corresponding to the charging vehicle before the first target power module is allocated, B represents the charging demand power of the charging vehicle, and C represents the rated power of the first target power module.

4. The charging device according to any one of claims 1 to 3, characterized in that: The main controller is further configured to: The power distribution module is controlled to distribute a first number of first target power modules to a charging interface connected to a second target charging vehicle, wherein the first number is less than or equal to a total number of power modules corresponding to the first target charging vehicle.

5. The charging device according to any one of claims 1 to 4, characterized in that: The main controller is also used for: The power distribution module is controlled to distribute the third target power module to the charging interface connected to the first target charging vehicle, and the output power of the third target power module is zero.

6. The charging device according to any one of claims 1 to 5, characterized in that: The main controller is also used for: Sending a charging suspension instruction to the first target charging vehicle to stop charging the first target charging vehicle; A pause end instruction is sent to the first target charging vehicle, so that the first target charging vehicle resumes charging.

7. The charging device according to claim 6, characterized in that: The charging device further comprises: a plurality of contactors, each of the charging interfaces being connected to the power distribution module via the contactors; The main controller is also used for: The contactor connected to the charging interface corresponding to the first target charging vehicle is controlled to be disconnected or connected.

8. The charging device according to any one of claims 1 to 5, characterized in that: The charging device further includes: a plurality of terminal controllers, the plurality of terminal controllers corresponding one-to-one to the plurality of charging interfaces; The main controller is also used for: Controlling the terminal controller corresponding to the first target charging vehicle to send a charging suspension instruction to the first target charging vehicle, so that the first target charging vehicle stops charging; The terminal controller corresponding to the first target charging vehicle is controlled to send a pause end instruction to the first target charging vehicle, so that the first target charging vehicle is charged.

9. The charging device according to claim 8, characterized in that: The charging device further comprises: a plurality of contactors, each of the charging interfaces being connected to the power distribution module via the contactors; The main controller is also used for: The terminal controller corresponding to the first target charging vehicle is controlled to disconnect or connect the contactor of the corresponding charging interface.

10. A power distribution method, characterized in that: include: Acquire power information, the power information including: output power of each charging interface and charging power required by each charging vehicle; In response to the sum of the rated powers of the power modules corresponding to the charging interfaces being greater than the sum of the output powers of the charging interfaces, and the sum of the rated powers of the power modules corresponding to the charging interfaces being less than the sum of the charging demand powers of the charging vehicles, stopping the charging of the first target charging vehicle; Control the output power of the first target power module corresponding to the first target charging vehicle to be distributed to the charging interface connected to the second target charging vehicle, and the charging demand power of the second target charging vehicle is greater than the output power of the charging interface connected to the second target charging vehicle before the first target power module is distributed.

11. The power distribution method according to claim 10, characterized in that: The first target charging vehicle includes at least one of the following charging vehicles: A charging vehicle connected to a charging interface corresponding to a minimum output power, wherein the minimum output power is the minimum value of the output powers of the charging interfaces; A charging vehicle corresponding to a minimum charging requirement power, wherein the minimum charging requirement power is the minimum value of the charging requirement powers of the charging vehicles; a charging vehicle corresponding to a maximum battery remaining capacity, wherein the maximum battery remaining capacity is a maximum value among the battery remaining capacities of the charging vehicles; A charging vehicle connected to a charging interface corresponding to a first target output power, wherein the first target output power is an output power of the output powers of the charging interfaces that is less than a first power threshold; a charging vehicle corresponding to a first target charging requirement power, wherein the first target charging requirement power is a charging requirement power of each of the charging vehicles that is less than a second power threshold; The target battery remaining capacity corresponds to the charging vehicle, and the target battery remaining capacity is the battery remaining capacity of each of the charging vehicles that is greater than the battery remaining capacity threshold.

12. The power distribution method according to any one of claims 10 or 11, characterized in that: The second target charging vehicle includes at least one of the following charging vehicles: The charging vehicle corresponding to the maximum charging requirement power, the maximum charging requirement power is the maximum charging requirement power among the second target charging requirement powers, and the second target charging requirement power is the charging requirement power among the charging requirements of each of the charging vehicles that is greater than the output power of the corresponding charging interface; The charging vehicle corresponding to the maximum demand value, the maximum demand value is the maximum value of the demand values ​​corresponding to each of the charging vehicles, the demand value corresponding to the charging vehicle is (BA) / C, A represents the output power of the charging interface corresponding to the charging vehicle before the first target power module is allocated, B represents the charging demand power of the charging vehicle, and C represents the rated power of the first target power module.

13. The power allocation method according to any one of claims 10 to 12, characterized in that: The controlling the first target power module corresponding to the first target charging vehicle to be allocated to the charging interface connected to the second target charging vehicle includes: A first number of first target power modules is controlled to be allocated to a charging interface connected to a second target charging vehicle, wherein the first number is less than or equal to a total number of power modules corresponding to the first target charging vehicle.

14. The power allocation method according to any one of claims 10 to 13, characterized in that: Also includes: The third target power module is controlled to be allocated to the charging interface connected to the first target charging vehicle, and the output power of the third target power module is zero.

15. The power allocation method according to any one of claims 10 to 14, characterized in that: Also includes: Sending a charging suspension instruction to the first target charging vehicle to stop charging the first target charging vehicle; A pause end instruction is sent to the first target charging vehicle, so that the first target charging vehicle resumes charging.

16. The power distribution method according to claim 15, characterized in that: Also includes: The contactor connected to the charging interface corresponding to the first target charging vehicle is controlled to be disconnected or connected.

17. The power allocation method according to any one of claims 10 to 14, characterized in that: Also includes: Controlling the terminal controller corresponding to the first target charging vehicle to send a charging suspension instruction to the first target charging vehicle, so that the first target charging vehicle stops charging; The terminal controller corresponding to the first target charging vehicle is controlled to send a pause end instruction to the first target charging vehicle, so that the first target charging vehicle resumes charging.

18. The power distribution method according to claim 17, characterized in that: Also includes: The terminal controller corresponding to the first target charging vehicle is controlled to disconnect or connect the contactor of the corresponding charging interface.

Images