Electric vehicle charging device, system and method

Abstract

The present application provides an electric vehicle charging device, system and method, the device comprising: a power supply device, a control device, a charging device and a power distribution device; the power supply device is used to provide power to the electric vehicle charging device; the control device is used to obtain vehicle information of the currently charged vehicle from the power distribution device, and select at least one charging module required for charging from the charging device according to the vehicle information, the vehicle information includes the current charging current of the vehicle; the charging device is used to charge the vehicle according to the selected at least one charging module, the charging device includes multiple charging modules, and there are charging modules with different rated output currents; the power distribution device is used to adjust the output ends of the determined at least one charging module to one output end, so as to charge the vehicle through one output end. The electric vehicle charging device is provided with multiple charging modules, and there are charging modules with different rated output currents, which improves the utilization rate of the charging device.

Description

Technical Field

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

[0002] As environmental issues are increasingly valued, "carbon neutrality" has become a common goal of the world. Developing electric vehicles is an effective way to achieve "carbon neutrality", and charging piles, as supporting facilities for electric vehicles, have also become an indispensable part of achieving "carbon neutrality".

[0003] As the range of electric vehicles increases, battery capacity is getting larger and larger. To address the problem of long charging time, the development of high-power modules has become a major trend. Currently, vehicles are generally charged using the following methods and equipment: design multiple charging modules and allocate a corresponding number of charging modules to the vehicle to be charged according to its required current.

[0004] However, it can be seen from the above content that the prior art has at least the following problems: when the vehicle to be charged is charged with a small current or the required current is not an integer multiple of the module output current, the module power cannot be fully utilized, resulting in a waste of module power. Summary of the invention

[0005] The present application provides an electric vehicle charging device, system and method to solve the problem of low utilization rate of charging equipment.

[0006] In a first aspect, the present application provides an electric vehicle charging device, comprising: a power supply device, a control device, a charging device and a power distribution device; a first connection end of the control device is connected to the power supply device, a second connection end of the control device is connected to a first connection end of the charging device, and a third connection end of the control device is connected to a first connection end of the power distribution device; a second connection end of the charging device is connected to a second connection end of the power distribution device, and a third connection end of the power distribution device is connected to an electric vehicle;

[0007] The power supply device is used to provide power to the electric vehicle charging equipment;

[0008] The control device is used to obtain vehicle information of the currently charged vehicle from the power distribution device, and select at least one charging module required for charging from the charging device according to the vehicle information, wherein the vehicle information includes the current charging current of the vehicle;

[0009] The charging device is used to charge the vehicle according to the selected at least one charging module, and the charging device includes a plurality of charging modules, and there are charging modules with different rated output currents;

[0010] The power distribution device is used to adjust the output ends of at least one determined charging module into one output end, so as to charge the vehicle through the one output end.

[0011] Optionally, the charging device includes a high-power module, a medium-power module and a low-power module;

[0012] The high-power module includes a first preset number of charging units, the medium-power module includes a second preset number of charging units, and the low-power module includes a third preset number of charging units, and each charging unit is provided with a charging connection terminal, so that the power distribution device adjusts the output terminals of the at least one charging module determined to be one output terminal through the charging connection terminal;

[0013] The rated output power of each charging unit included in the high-power module, the medium-power module and the low-power module is the same;

[0014] The rated output power of each charging unit included in the high-power module is greater than the rated output power of each charging unit included in the medium-power module, and the rated output power of each charging unit included in the medium-power module is greater than the rated output power of each charging unit included in the low-power module.

[0015] Optionally, the electric vehicle charging device further comprises a plug gun, one end of which is connected to the output end adjusted by the power distribution device, and the other end of which is connected to the charging vehicle to realize charging of the vehicle.

[0016] Optionally, the control device includes a monitoring unit, which is used to determine the number of first modules in the high-power modules, the number of second modules in the medium-power modules, and the number of third modules in the low-power modules required for charging the vehicle based on vehicle information and charging device information.

[0017] Optionally, the monitoring unit is also used to detect the utilization rate of the charging module in real time. When the utilization rate is lower than a preset value, the first number of modules in the high-power modules, the second number of modules in the medium-power modules, and the third number of modules in the low-power modules required for the charging vehicle are re-determined.

[0018] In a second aspect, the present application provides an electric vehicle system, the system comprising an electric vehicle charging device and an electric vehicle;

[0019] The electric vehicle charging device includes any one of the electric vehicle charging devices described in the first aspect above.

[0020] In a third aspect, the present application provides an electric vehicle charging method, the method comprising:

[0021] Obtain the current demand current of the charging vehicle;

[0022] At least one charging module to be turned on is selected from the charging device according to the required current, wherein the charging device includes a plurality of charging modules, and there are charging modules with different single rated output currents;

[0023] Assign the selected charging module to the charging vehicle.

[0024] Optionally, assigning the selected charging module to the charging vehicle includes:

[0025] When the at least one charging module that needs to be turned on is different from the charging module that is currently turned on, a transition is made from the charging module that is currently turned on to the at least one charging module that needs to be turned on.

[0026] Optionally, the charging device includes a high-power module, a medium-power module and a low-power module, the rated output power of each charging module included in the high-power module is greater than the rated output power of each charging module included in the medium-power module, and the rated output power of each charging module included in the medium-power module is greater than the rated output power of each charging module included in the small-power module.

[0027] Optionally, selecting at least one charging module to be turned on from the charging device according to the required current includes:

[0028] Determining the number of first modules required in the high-power module according to the required current;

[0029] Determine a first remaining required power according to a first rated output current of the high-power module and the first number of modules;

[0030] Determine the number of second modules required in the medium power module according to the first remaining required power;

[0031] Determine a second remaining required power according to a second rated output current of the medium power module and the second number of modules;

[0032] The number of third modules required in the low-power module is determined according to the second remaining required power.

[0033] In a fourth aspect, the present application provides an electric vehicle charging device, comprising:

[0034] An acquisition module is used to obtain the current demand current of the charging vehicle;

[0035] A selection module, used for selecting at least one charging module to be turned on from the charging device according to the required current, wherein the charging device includes a plurality of charging modules, and there are charging modules with different single rated output currents;

[0036] The allocation module is used to allocate the selected charging module to the charging vehicle.

[0037] Optionally, the allocation module is further configured to:

[0038] When the selected at least one charging module that needs to be turned on is different from the charging module that is currently turned on, the charging module is turned back on from the charging module that is currently turned on to the at least one charging module that needs to be turned on.

[0039] Optionally, the charging device includes a high-power module, a medium-power module and a low-power module, the rated output power of each charging module included in the high-power module is greater than the rated output power of each charging module included in the medium-power module, and the rated output power of each charging module included in the medium-power module is greater than the rated output power of each charging module included in the small-power module.

[0040] Optionally, the selection module is also used to:

[0041] Determining the number of first modules required in the high-power module according to the required current;

[0042] Determine a first remaining required power according to a first rated output current of the high-power module and the first number of modules;

[0043] Determine the number of second modules required in the medium power module according to the first remaining required power;

[0044] Determine a second remaining required power according to a second rated output current of the medium power module and the second number of modules;

[0045] The number of third modules required in the low-power module is determined according to the second remaining required power.

[0046] In a fifth aspect, the present application provides yet another electric vehicle charging device, comprising one or more processors and a memory;

[0047] A memory for storing one or more programs;

[0048] When one or more programs are executed by one or more processors, the one or more processors execute the method for charging an electric vehicle involved in the third aspect.

[0049] In a sixth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method for charging an electric vehicle involved in the third aspect above.

[0050] In a seventh aspect, an embodiment of the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the method for charging an electric vehicle involved in the third aspect above.

[0051] The charging device of the electric vehicle charging equipment provided in the embodiment of the present application includes multiple charging modules, and different modules can provide different charging currents, and different charging modules can be selected for combination according to different charging vehicles. Compared with the prior art that can only use fixed charging modules to charge electric vehicles, the embodiment of the present application selects multiple modules with different output power for charging. When a high-power module is not needed, a low-power module can be selected, thereby reducing the waste of high-power modules, improving the utilization rate of the charging equipment, and reducing the waste of charging modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 A schematic diagram of the structure of an electric vehicle charging device provided in one embodiment of the present application;

[0054] Figure 2 A schematic diagram of an electric vehicle charging device allocation provided in another embodiment of the present application;

[0055] Figure 3 A schematic diagram of the distribution of electric vehicle charging equipment provided by the prior art;

[0056] Figure 4 A flow chart of an electric vehicle charging method provided in one embodiment of the present application;

[0057] Figure 5 A flow chart of another electric vehicle charging method provided in one embodiment of the present application;

[0058] Figure 6 A block diagram of an electric vehicle charging device provided in one embodiment of the present application;

[0059] Figure 7 A block diagram of another electric vehicle charging device provided in an embodiment of the present application.

[0060] In the figure: 100 power supply device, 200 control device, 300 power distribution device, 310 high-power module, 311 first charging unit, 312 second charging unit, 313 third charging unit, 314 fourth charging unit, 320 medium-power module, 321 fifth charging unit, 322 sixth charging unit, 323 seventh charging unit, 330 low-power module, 331 eighth charging unit, 332 ninth charging unit, 333 tenth charging unit, 400 power distribution device, 40 receiver, 41 transmitter, 42 processor, 43 memory. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0062] Figure 1 This is an electric vehicle charging device shown in an embodiment of the present application. Figure 1 As shown, the device includes: a power supply device 100, a control device 200, a charging device 300 and a power distribution device 400.

[0063] The first connection end of the control device 200 is connected to the power supply device 100, the second connection end of the control device 200 is connected to the first connection end of the charging device 300, and the third connection end of the control device 200 is connected to the first connection end of the power distribution device 400; the second connection end of the charging device 300 is connected to the second connection end of the power distribution device 400, and the third connection end of the power distribution device 400 is connected to the electric vehicle.

[0064] The power supply device 100 is used to provide power for the electric vehicle charging device.

[0065] The control device 200 is used to obtain vehicle information of the currently charged vehicle from the power distribution device 400, and select at least one charging module required for charging from the charging device 300 according to the vehicle information. The vehicle information includes the current charging current of the vehicle.

[0066] Of course, the control device 200 can also obtain other information of the charging vehicle from the power distribution device 400 as needed, for example, it can also obtain the voltage, state of charge, temperature, remaining power, etc. of the battery of the charging vehicle.

[0067] The charging device 300 includes a plurality of charging modules, and there are charging modules with different rated output currents. Furthermore, the charging device 300 is used to charge the vehicle according to at least one selected charging module.

[0068] The power distribution device 400 is used to adjust the output ends of at least one determined charging module into one output end, so as to charge the vehicle through one output end.

[0069] During use, when a vehicle needs to be charged, the power supply device 100 is first connected to the vehicle charging equipment to supply power to the vehicle charging equipment; then, the power distribution device 400 obtains the demand current of the vehicle to be charged, and sends the demand current to the control device 200. The control device 200 calculates the number of each charging module required by the vehicle to be charged according to the demand current, and sends the allocation result to the charging device 300 and the power distribution device 400. The control device 200 schedules the power modules that need to be turned on; the power distribution device 400 adjusts the various charging modules required by the vehicle to be charged to one output, and connects the one output to the vehicle to be charged, thereby charging the vehicle to be charged.

[0070] Furthermore, during the charging process, the control device 200 calculates the utilization rate of the charging device 300 in real time. When the utilization rate is low, the control device 200 recalculates the type of power module required and its corresponding quantity based on the current demand current of the charging vehicle, so as to improve the utilization rate of the charging device 300.

[0071] It can be seen from the above content that the charging device 300 in the electric vehicle charging equipment provided in the embodiment of the present application includes multiple charging modules, and different modules can provide different charging currents; and a power distribution device 400 is provided, which can select different charging modules according to different charging vehicles, and combine the different charging modules to output through one output end; compared with the prior art that can only use a fixed charging module to charge electric vehicles, the embodiment of the present application can select a variety of modules with different output powers for charging, so that high-power modules and low-power modules can be combined, thereby reducing the waste of high-power modules and improving the utilization rate of charging equipment.

[0072] Alternatively, see Figure 1 The charging device 300 includes a high-power module 310 , a medium-power module 320 and a low-power module 330 .

[0073] Further, the high-power module 310 may include a first preset number of charging units, the medium-power module 320 may include a second preset number of charging units, and the low-power module 330 may include a third preset number of charging units.

[0074] Furthermore, each charging unit included in the high-power module 310 , the medium-power module 320 , and the low-power module 330 has the same rated output power.

[0075] Furthermore, the rated output power of each charging unit included in the high-power module 310 is greater than the rated output power of each charging unit included in the medium-power module 320, and the rated output power of each charging unit included in the medium-power module 320 is greater than the rated output power of each charging unit included in the low-power module 330.

[0076] Furthermore, each charging unit is provided with a charging connection terminal, so that the power distribution device 400 adjusts the output terminals of at least one determined charging module into one output terminal through the charging connection terminal.

[0077] For example, Figure 1 As shown, the high-power module 310 includes four charging units, namely the first charging unit 311, the second charging unit 312, the third charging unit 313 and the fourth charging unit 314, and the rated output power of the four charging units is the same, for example, all are 40W; the medium-power module 320 includes three charging units, namely the fifth charging unit 321, the sixth charging unit 322 and the seventh charging unit 323, and the rated output power of the three charging units is the same, for example, all are 15W; the low-power module 330 includes three charging units, namely the eighth charging unit 331, the ninth charging unit 332 and the tenth charging unit 333, and the rated output power of the three charging units is the same, for example, all are 2.5W.

[0078] Of course, the charging device 300 may also be provided with power modules of other levels according to actual conditions, for example, modules of power levels between the above-mentioned levels, and the present application does not impose any limitation on this.

[0079] Optionally, the electric vehicle charging device also includes a plug gun, one end of the plug gun is connected to the adjusted output end of the power distribution device 400, and the other end of the plug gun is connected to the charging vehicle, that is, the vehicle charging device and the vehicle are connected through the plug gun to charge the vehicle.

[0080] After using the plug gun, the user only needs to connect the plug gun to the vehicle so that the vehicle is connected to the vehicle charging device, without having to pay attention to the connection relationship inside the power distribution device 400, which is convenient to operate.

[0081] Optionally, the power distribution device 400 is also used to obtain battery information of the vehicle battery in real time during charging, and the battery information includes the current charging current of the battery.

[0082] Of course, the power distribution device 400 can also obtain other information of the charging vehicle as needed, for example, it can also obtain the charge state, voltage, temperature, remaining power, etc. of the battery of the charging vehicle.

[0083] The battery information acquired by the power distribution device 400 may be stored in the memory of the power distribution device 400, and may also be sent to the control device 200 in a timely manner and stored in the memory of the control device 200, so that it can be directly used in data statistics later.

[0084] Optionally, the control device 200 includes a monitoring unit, which is used to determine the number of first modules in the high-power modules, the number of second modules in the medium-power modules, and the number of third modules in the low-power modules required for charging the vehicle based on vehicle information, such as charging demand current, and information of the charging device 300.

[0085] The monitoring unit is also used to detect in real time the utilization rate of the charging module or charging unit in use. When the utilization rate is lower than a preset value, the number of the first modules in the high-power modules, the number of the second modules in the medium-power modules, and the number of the third modules in the low-power modules required for the charging vehicle are re-determined.

[0086] When determining whether to turn on the high-power module, the following formula can be used for judgment:

[0087] I1-N*12>X / I2

[0088] Among them, I1 is the current demand of the charging vehicle, I2 is the rated output current of a single module, N is the number of high-power modules, and X is a fixed coefficient.

[0089] When the charging vehicle satisfies the above formula, it is determined to turn on N+1 high-power modules. When the above formula is not satisfied, it is determined to turn on N high-power modules and power modules smaller than the high-power modules.

[0090] Among them, X can be determined according to actual conditions. For example, according to long-term statistics, when there are more high-power vehicles charged at the charging place, X can be set to a smaller value so that the high-power module can be used by large vehicles as much as possible. When there are more low-power vehicles charged, thereby improving the utilization rate of the charging device, X can be set to a larger value so that each power module can be used as much as possible.

[0091] For example, the charging vehicle requires 208A, and one unit of the high-power module has a rated output of 150A, then N=208 / 150=1, and 58A remains after removing one high-power module. If X=15, then 150 / 15=10A, which satisfies the above formula, so two high-power modules are turned on.

[0092] When the vehicle is charging, the plug is turned on, and the vehicle's state of charge will change as the charging continues, which will in turn change the required voltage and current. The battery management module can detect the battery status in real time, and the monitoring unit will calculate the utilization rate of the charging module in real time according to the battery status. When a large module has a low power utilization rate, it will be transferred to a small power module for charging, and at the same time, the large power module will be released to other vehicles with a larger current demand. Or, when all the high-power modules are occupied, other levels of power modules are used to piece together. The principle is to go from large to small, and try to maximize the utilization rate of the modules in the system.

[0093] Of course, with the development of electric vehicles and the increase in battery capacity, module power can be more diversified. In one system, there can be 3 or 4 levels of power modules. Different levels of power modules can cope with different levels of charging requirements, thereby improving vehicle charging efficiency and the utilization rate of charging equipment.

[0094] For example, see Figure 2 and Figure 3 ,in Figure 2 An electric vehicle charging device is shown for the implementation of this application. Figure 3 Charging equipment for existing electric vehicles.

[0095] refer to Figure 2 The charging devices 300 configured for the electric vehicle charging equipment are divided into three types: the first type is a high-power module, which can output up to 150A and 40kW, with a total of 4; the second type is a medium-power module, which can output up to 50A and 15kW, with a total of 4; the last type is a low-power module, which can output up to 10A and 2.5kW, with a total of 8. The total output power of the system is 240kW.

[0096] refer to Figure 3 The module configuration of the charging device 300 has only one high-power module, which can output up to 150A and 40kW of power. There are 6 modules in total, and the total power output of the electric vehicle charging equipment is also 240kW.

[0097] contrast Figure 2 and Figure 3 ,The two electric vehicle charging equipment solutions have the same total output power, but different types of configuration modules.

[0098] Furthermore, assume that there are 10 charging plugs and 7 vehicles currently need to charge.

[0099] The first option can refer to Figure 2 , the module power is calculated and matched, which can meet the charging needs of 7 vehicles at the same time. The specific allocation plan is as follows:

[0100] Step 1: Car No. 1 requires 160A. At this time, a 40kW module and a 2.5kW module are allocated, and the maximum total output current is 160A, which meets the demand;

[0101] Step 2: Car No. 2 needs 180A. At this time, a 40kW and a 15kW module are allocated, and the maximum total output current is 200A, which meets the demand;

[0102] Step 3: Car No. 3 needs 208A. At this time, a 40kW, a 15kW and a 2.5kW module are allocated, and the maximum output is 210A, which meets the demand;

[0103] Step 4: Car No. 4 requires 200A. At this time, a 40kW and a 15kW module are allocated, which can output up to 200A to meet the demand;

[0104] Step 5: Car No. 5 is almost fully charged and requires 2A. At this time, a 2.5kW module is allocated, which can output up to 10A, meeting the requirement;

[0105] Step 6: Car No. 6 is the same as Car No. 5;

[0106] Step 7: Car No. 7 is the same as car No. 5.

[0107] The benefit of this solution is that after each vehicle is satisfied, there is still one 15kW and three 2.5kW modules left.

[0108] Of course, this is just one of the combinations. Other powers can also be used to piece together and release high-power modules. The ultimate goal is to maximize the utilization of the modules.

[0109] The second option, refer to Figure 3 First, car 1 needs 160A, one 40kW module is not enough, so two modules need to be allocated. Secondly, car 2 needs 180A, one 40kW module is not enough, so two modules also need to be allocated. Finally, car 3 needs 208A, so two modules need to be allocated.

[0110] Vehicles 4, 5, 6 and 7 have no available modules and cannot be charged.

[0111]

[0112] By comparison, it is obvious that the module power utilization rate of solution 1 is 94%, and it can meet the charging needs of more than 7 vehicles at the same time. However, the module power utilization rate of solution 2 is only 60%, which is extremely low, and it can only meet the charging needs of 3 vehicles, and other vehicles cannot be charged.

[0113] An embodiment of the present application also provides an electric vehicle system, which includes an electric vehicle charging device and an electric vehicle.

[0114] The electric vehicle charging device includes any one of the electric vehicle charging devices shown in the above embodiments.

[0115] It should be noted that the relevant description of the above-mentioned electric vehicle system embodiment refers to the above-mentioned electric vehicle charging device, which will not be repeated here.

[0116] Since the electric vehicle charging device in the electric vehicle system can be any one of the above-mentioned electric vehicle charging devices, the charging device in the electric vehicle system also includes multiple charging modules, and different modules can provide different charging currents; and a power distribution device is provided, which can select different charging modules according to different charging vehicles, and combine the different charging modules to output through one output end; compared with the prior art that can only use a fixed charging module to charge the electric vehicle, the embodiment of the present application can select a plurality of modules with different output powers for charging, so that high-power modules and low-power modules can be combined, thereby reducing the waste of high-power modules and improving the utilization rate of the charging equipment.

[0117] The present application also provides an electric vehicle charging method, which can be executed by the above-mentioned control device 200. Figure 4 As shown, combined with Figure 5 , the method comprising:

[0118] Step 101, obtaining the current demand current of the charging vehicle.

[0119] Step 102 : selecting at least one charging module to be turned on from the charging device according to the required current, wherein the charging device includes a plurality of charging modules, and there are charging modules with different single rated output currents.

[0120] Step 103: assigning the selected charging module to the charging vehicle.

[0121] Optionally, assigning the selected charging module to the charging vehicle includes:

[0122] When the at least one charging module that needs to be turned on is different from the charging module that is currently turned on, a transition is made from the charging module that is currently turned on to the at least one charging module that needs to be turned on.

[0123] Optionally, the charging device includes a high-power module, a medium-power module and a low-power module;

[0124] The high-power module includes a first preset number of charging units, the medium-power module includes a second preset number of charging units, and the low-power module includes a third preset number of charging units;

[0125] The rated output power of each charging unit included in each of the high-power module, the medium-power module and the low-power module is the same, and each charging unit is provided with a charging connection terminal, so that the power distribution device adjusts the output terminals of at least one determined charging module into one output terminal through the charging connection terminal;

[0126] The rated output power of each charging unit included in the high-power module is greater than the rated output power of each charging unit included in the medium-power module, and the rated output power of each charging unit included in the medium-power module is greater than the rated output power of each charging unit included in the low-power module.

[0127] Optionally, selecting at least one charging module to be turned on from the charging device according to the required current includes:

[0128] Determining the number of first modules required in the high-power module according to the required current;

[0129] Determine a first remaining required power according to a first rated output current of the high-power module and the first number of modules;

[0130] Determine the number of second modules required in the medium power module according to the first remaining required power;

[0131] Determine a second remaining required power according to a second rated output current of the medium power module and the second number of modules;

[0132] The number of third modules required in the low-power module is determined according to the second remaining required power.

[0133] In addition, it should be noted that Figure 5 The charging method flowchart shown is for the case where the charging device 300 includes a large power module and a small power module. Of course, the charging device may also include power modules of other sizes. This figure is only used as an example and is not a limitation thereto.

[0134] It should be noted that the relevant description of the above method embodiment refers to the above electric vehicle charging device and electric vehicle system, which will not be repeated here.

[0135] In summary, the electric vehicle charging method provided in the embodiment of the present application can detect the utilization rate of the vehicle charging equipment of each vehicle in real time. When the utilization rate is low, the charging module used for charging is adjusted in real time. The charging module can be a combination of charging modules with multiple rated output powers. Compared with the prior art that can only use fixed charging modules to charge electric vehicles, the embodiment of the present application selects multiple modules with different output powers for charging. When a high-power module is not needed, a low-power module can be selected, thereby reducing the waste of high-power modules, improving the utilization rate of the charging equipment, and reducing the waste of charging modules.

[0136] Figure 6 According to the present application, an electric vehicle charging device is provided, such as Figure 6 As shown, the charging device includes:

[0137] An acquisition module 601 is used to acquire the current demand current of the charging vehicle;

[0138] A selection module 602, configured to select at least one charging module to be turned on from the charging device according to the required current, wherein the charging device includes a plurality of charging modules, and there are charging modules with different single rated output currents;

[0139] The allocation module 603 is used to allocate the selected charging module to the charging vehicle.

[0140] Optionally, the allocation module 603 is further configured to:

[0141] When the at least one charging module that needs to be turned on is different from the charging module that is currently turned on, a transition is made from the charging module that is currently turned on to the at least one charging module that needs to be turned on.

[0142] Optionally, the charging device includes a high-power module, a medium-power module and a low-power module, the rated output power of each charging module included in the high-power module is greater than the rated output power of each charging module included in the medium-power module, and the rated output power of each charging module included in the medium-power module is greater than the rated output power of each charging module included in the small-power module.

[0143] Optionally, the selection module 602 is further configured to:

[0144] Determining the number of first modules required in the high-power module according to the required current;

[0145] Determine a first remaining required power according to a first rated output current of the high-power module and the first number of modules;

[0146] Determine the number of second modules required in the medium power module according to the first remaining required power;

[0147] Determine a second remaining required power according to a second rated output current of the medium power module and the second number of modules;

[0148] The number of third modules required in the low-power module is determined according to the second remaining required power.

[0149] It should be noted that the relevant description of the above-mentioned device embodiment refers to the above-mentioned electric vehicle charging equipment, electric vehicle system and method embodiments, which are not repeated here.

[0150] In summary, the electric vehicle charging device provided in the embodiment of the present application can detect the utilization rate of the vehicle charging equipment of each vehicle in real time. When the utilization rate is low, the charging module used for charging can be adjusted in real time. The charging module can be a combination of charging modules with multiple rated output powers. Compared with the prior art that can only use fixed charging modules to charge electric vehicles, the embodiment of the present application selects multiple modules with different output powers for charging. When a high-power module is not needed, a low-power module can be selected, thereby reducing the waste of high-power modules, improving the utilization rate of the charging equipment, and reducing the waste of charging modules.

[0151] The present application also provides a computer device, such as Figure 7 As shown, the computer device includes:

[0152] one or more processors 42;

[0153] A memory 43, used to store one or more programs;

[0154] When one or more programs are executed by one or more processors, the one or more processors execute the method for charging an electric vehicle involved in the above-mentioned device, system and method embodiments.

[0155] Furthermore, the computer device can exchange data with other devices through the receiver 40 and the transmitter 41 .

[0156] For example, a computer device may implement Figure 4 The method shown is as follows: Step 101, obtaining the current demand current of the charging vehicle; Step 102, selecting at least one charging module to be turned on from the charging device according to the demand current, wherein the charging device includes multiple charging modules, and there are charging modules with different single rated output currents; Step 103, allocating the selected charging module to the charging vehicle.

[0157] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, and the computer program is used to implement the method for charging an electric vehicle involved in the above-mentioned device, system and method embodiments.

[0158] For example, a computer program stored in a computer-readable storage medium may implement the following Figure 4 The method shown is as follows: Step 101, obtaining the current demand current of the charging vehicle; Step 102, selecting at least one charging module to be turned on from the charging device according to the demand current, wherein the charging device includes multiple charging modules, and there are charging modules with different single rated output currents; Step 103, allocating the selected charging module to the charging vehicle.

[0159] The application embodiment also provides a computer program product, including a computer program, which, when executed by a processor, implements the method for charging an electric vehicle involved in the third aspect above.

[0160] In addition, the computer program included in the above-mentioned computer device and computer-readable storage medium can detect the utilization rate of the vehicle charging equipment for each vehicle in real time. When the utilization rate is low, the charging module used for charging is adjusted in real time. The charging module can be a combination of charging modules with multiple rated output powers. Compared with the prior art that can only use fixed charging modules to charge electric vehicles, the embodiment of the present application selects multiple modules with different output powers for charging. When a high-power module is not needed, a low-power module can be selected, thereby reducing the waste of high-power modules, improving the utilization rate of the charging equipment, and reducing the waste of charging modules.

[0161] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0162] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0163] Through the description of the above implementations, those skilled in the art can easily understand that the example implementations described here can be implemented by software, or by combining software with necessary hardware.

[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric vehicle charging device, characterized in that: The device comprises: a power supply device, a control device, a charging device and a power distribution device; the first connection end of the control device is connected to the power supply device, the second connection end of the control device is connected to the first connection end of the charging device, and the third connection end of the control device is connected to the first connection end of the power distribution device; the second connection end of the charging device is connected to the second connection end of the power distribution device, and the third connection end of the power distribution device is connected to the electric vehicle; The power supply device is used to provide power to the electric vehicle charging equipment; The control device is used to obtain vehicle information of the current electric vehicle from the power distribution device, and select at least one charging module required for charging from the charging device according to the vehicle information, wherein the vehicle information includes the current required current for charging of the electric vehicle; The charging device is used to charge the electric vehicle according to the selected at least one charging module, and the charging device includes a plurality of charging modules, and there are charging modules with different rated output currents; The power distribution device is used to adjust the determined output ends of the at least one charging module into one output end, so as to charge the electric vehicle through one output end; The charging device includes a high-power module, a medium-power module and a low-power module; The high-power module includes a first preset number of charging units, the medium-power module includes a second preset number of charging units, and the low-power module includes a third preset number of charging units; The rated output power of each charging unit included in each of the high-power module, the medium-power module and the low-power module is the same, and each charging unit is provided with a charging connection terminal, so that the power distribution device adjusts the output terminals of the at least one charging module determined to be one output terminal through the charging connection terminal; The rated output power of each charging unit included in the high-power module is greater than the rated output power of each charging unit included in the medium-power module, and the rated output power of each charging unit included in the medium-power module is greater than the rated output power of each charging unit included in the low-power module; At least one charging module to be turned on is selected from the charging device according to the current charging demand current of the electric vehicle, including: determining the number of first modules required in the high-power module according to the current charging demand current of the electric vehicle; determining the first remaining required power according to the first rated output current of the high-power module and the first number of modules; determining the number of second modules required in the medium-power module according to the first remaining required power; determining the second remaining required power according to the second rated output current of the medium-power module and the second number of modules; determining the number of third modules required in the low-power module according to the second remaining required power; The control device is also used to detect the utilization rate of the charging module in real time. When the utilization rate is lower than a preset value, the first number of modules in the high-power modules, the second number of modules in the medium-power modules, and the third number of modules in the low-power modules required by the electric vehicle are re-executed; if the following formula (I) is satisfied, it is determined to start N+1 of the high-power modules; if the following formula (I) is not satisfied, it is determined to start N of the high-power modules and power modules smaller than the high-power modules; I1-N*I2>X / I2 Formula (I) Among them, I1 is the current demand for charging of the electric vehicle, N is the number of high-power modules, X is a fixed coefficient, and I2 is the rated output current of a single module.

2. The electric vehicle charging device according to claim 1, characterized in that: The electric vehicle charging device also includes a plug gun, one end of which is connected to the output end adjusted by the power distribution device, and the other end of which is connected to the electric vehicle to charge the vehicle.

3. An electric vehicle charging system, characterized in that: The system includes an electric vehicle charging device and an electric vehicle; The electric vehicle charging device comprises the electric vehicle charging device according to any one of claims 1 to 2.

4. A method for charging an electric vehicle, characterized in that: The method is implemented based on the electric vehicle charging device according to any one of claims 1 to 2, and the method includes: Obtaining the current charging demand current of the electric vehicle; Selecting at least one charging module to be turned on from the charging device according to the current charging demand current of the electric vehicle, wherein the charging device includes a plurality of charging modules, and there are charging modules with different single rated output currents; assigning the selected charging module to the electric vehicle; The charging device includes a high-power module, a medium-power module and a low-power module; The high-power module includes a first preset number of charging units, the medium-power module includes a second preset number of charging units, and the low-power module includes a third preset number of charging units; The rated output power of each charging unit included in each of the high-power module, the medium-power module and the low-power module is the same, and each charging unit is provided with a charging connection terminal, so that the power distribution device adjusts the output terminals of the at least one charging module determined to be one output terminal through the charging connection terminal; The rated output power of each charging unit included in the high-power module is greater than the rated output power of each charging unit included in the medium-power module, and the rated output power of each charging unit included in the medium-power module is greater than the rated output power of each charging unit included in the low-power module; At least one charging module to be turned on is selected from the charging device according to the current charging demand current of the electric vehicle, including: determining the number of first modules required in the high-power module according to the current charging demand current of the electric vehicle; determining the first remaining required power according to the first rated output current of the high-power module and the first number of modules; determining the number of second modules required in the medium-power module according to the first remaining required power; determining the second remaining required power according to the second rated output current of the medium-power module and the second number of modules; determining the number of third modules required in the low-power module according to the second remaining required power; The method further includes: detecting the utilization rate of the charging module in real time, and when the utilization rate is lower than a preset value, re-determining the number of the first modules in the high-power modules, the second modules in the medium-power modules, and the third modules in the low-power modules required by the electric vehicle; If the following formula (I) is satisfied, it is determined to start N+1 of the high-power modules; if the following formula (I) is not satisfied, it is determined to start N of the high-power modules and a power module smaller than the high-power module; I1-N*I2>X / I2 Formula (I) Among them, I1 is the current demand for charging of the electric vehicle, N is the number of high-power modules, X is a fixed coefficient, and I2 is the rated output current of a single module.

5. The electric vehicle charging method according to claim 4, characterized in that: The allocating the selected charging module to the electric vehicle comprises: When the selected at least one charging module that needs to be turned on is different from the charging module that is currently turned on, a transition is made from the charging module that is currently turned on to the at least one charging module that needs to be turned on.

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