Charging control method and device of electric vehicle, electric vehicle, medium and product

Abstract

The invention relates to the technical field of electric vehicle charging, and discloses a charging control method and device for an electric vehicle, the electric vehicle, a medium and a product, and the method comprises the steps: obtaining the electricity price information, the charging cut-off moment, the maximum allowable charging power and the current state of charge of the charging position of the electric vehicle; the target charge state of the electric vehicle is determined, and the target charge state is the charge state which the electric vehicle needs to reach at the charging cut-off moment; and according to the electricity price information, the charging cut-off moment, the maximum allowable charging power, the current charge state and the target charge state, the current charging power of the electric vehicle is adjusted, so that the charging cost required for completing charging of the electric vehicle is smaller than the charging cost required for constant-power charging. The charging cost can be reduced, and the load fluctuation of the power grid side can be stabilized.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and in particular to an electric vehicle charging control method, a device, an electric vehicle, a medium and a product. Background Art

[0002] Electric vehicles are vehicles powered by electric motors and powered by batteries. These vehicles are electrically powered and offer advantages such as environmental friendliness, energy efficiency, low operating costs, and low noise levels. With advances in battery technology and improvements in infrastructure such as charging stations, the market share of electric vehicles is rapidly increasing.

[0003] Because electric vehicles' batteries can only store a limited amount of energy, they require frequent charging. Current charging solutions typically rely on constant power. When charging an electric vehicle during peak hours, the power remains constant for extended periods, exacerbating grid pressure and potentially increasing charging costs. Summary of the Invention

[0004] In view of this, the present invention provides a charging control method and device for an electric vehicle, an electric vehicle, a medium and a product to reduce the charging cost and the operating pressure of the power grid during constant power charging.

[0005] In a first aspect, the present invention provides a charging control method for an electric vehicle, the method comprising: obtaining electricity price information, charging cutoff time, maximum allowable charging power and current state of charge of the charging location where the electric vehicle is located; determining a target state of charge of the electric vehicle, wherein the target state of charge is the state of charge that the electric vehicle needs to reach at the charging cutoff time; and adjusting the current charging power of the electric vehicle based on the electricity price information, charging cutoff time, maximum allowable charging power, current state of charge and target state of charge, so that the charging cost required for the electric vehicle to complete charging is less than the charging cost required for constant power charging.

[0006] The electric vehicle charging control method provided in this embodiment dynamically adjusts the electric vehicle's current charging power during charging based on electricity price information, charging cutoff time, maximum allowable charging power, current state of charge, and target state of charge. This not only reduces charging costs but also smooths grid load fluctuations and improves renewable energy absorption capacity. Furthermore, the smooth charging power fluctuations extend the battery pack's service life.

[0007] In an optional embodiment, the electricity price information includes the current electricity price, and the current charging power of the electric vehicle is adjusted according to the electricity price information, the charging cutoff time, the maximum allowable charging power, the current state of charge and the target state of charge, including: when the remaining charging time is greater than the minimum charging time, if the current electricity price is less than or equal to the first electricity price threshold, the current charging power is adjusted to the first charging power, wherein the remaining charging time is the difference between the charging cutoff time and the current charging time, the minimum charging time is the time required to increase the current state of charge to the target state of charge according to the maximum allowable charging power, and the first charging power is less than or equal to the maximum allowable charging power; when the remaining charging time is greater than the minimum charging time, the current electricity price is less than or equal to the first electricity price threshold, and the current charging power is adjusted to the first charging power. When the charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold, the current charging power is adjusted to the second charging power, wherein the second charging power is less than the first charging power, and the second electricity price threshold is greater than the first electricity price threshold; when the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than the first electricity price threshold and the current electricity price is less than the second electricity price threshold, the current charging power is adjusted to the third charging power, wherein the third charging power is less than the first charging power and the third charging power is greater than the second charging power; when the remaining charging time is less than or equal to the minimum charging time, the current charging power is adjusted to the maximum allowable charging power.

[0008] In this embodiment, the current electricity price fluctuation is determined by a threshold and then the current charging power is adjusted. This has high flexibility and adapts to dynamic changes in the power grid. It can not only control the charging cost more accurately, but also indirectly help the power grid balance supply and demand.

[0009] In an optional embodiment, before adjusting the current charging power of the electric vehicle according to the electricity price information, the charging cutoff time, the maximum allowable charging power, the current state of charge and the target state of charge, the method also includes: obtaining indication information, wherein the indication information is used to indicate whether the electric vehicle needs to supply electricity to the power grid; when the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold, then adjusting the current charging power to the second charging power, including: when the electric vehicle does not need to supply electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold, then adjusting the current charging power to the second charging power.

[0010] In an optional embodiment, the current charging power of the electric vehicle is adjusted according to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge and the target state of charge, and also includes: when the electric vehicle needs to supply electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold, the current charging power is adjusted to 0; the method also includes: controlling the electric vehicle to supply electricity to the power grid.

[0011] In an optional embodiment, the electricity price information also includes the electricity price trend of a future time period, the start time of the future time period is greater than or equal to the charging start time, and before adjusting the current charging power of the electric vehicle based on the electricity price information, the charging cutoff time, the maximum allowable charging power, the current state of charge and the target state of charge, the method also includes: determining a first electricity price threshold and a second electricity price threshold based on the average electricity price obtained based on the electricity price trend of the future time period.

[0012] In an optional embodiment, the electricity price information includes a valley electricity price time period and a peak electricity price time period, and the current charging power of the electric vehicle is adjusted according to the electricity price information, the charging cutoff time, the maximum allowable charging power, the current state of charge, and the target state of charge, including: if the charging time period and the valley electricity price time period overlap, and the valley electricity price time period included in the charging time period is greater than or equal to the minimum charging time, then in the valley electricity price time period included in the charging time period, the current charging power is adjusted to the maximum allowable charging power, and in the peak electricity price time period included in the charging time period, the current charging power is adjusted to 0, wherein the charging time period is the time period between the charging cutoff time and the current charging time, The minimum charging time is the time required to increase the current state of charge to the target state of charge at the maximum allowable charging power; if the charging time period overlaps with the valley electricity price time period, and the valley electricity price time period included in the charging time period is less than the minimum charging time, then the current charging power will be adjusted to the maximum allowable charging power during the valley electricity price time period included in the charging time period, and the current charging power will be adjusted to the fourth charging power during the peak electricity price time period included in the charging time period, where the fourth charging power is less than the maximum allowable charging power; if the charging time period does not overlap with the valley electricity price time period, then the current charging power will be adjusted to the fifth charging power, where the fifth charging power is less than or equal to the fourth charging power.

[0013] In this embodiment, the current charging power is adjusted according to the off-peak electricity price period and the peak electricity price period, which makes the operation simpler. Electric vehicles do not need high-frequency data interaction, which can reduce errors caused by communication failures and has lower hardware requirements for vehicles and charging piles.

[0014] In an optional embodiment, after adjusting the current charging power to 0 during the peak electricity price period included in the charging time period, the method further includes: controlling the electric vehicle to transmit electric energy to the power grid during the peak electricity price period included in the charging time period.

[0015] In an optional embodiment, before determining the target state of charge of the electric vehicle, the method further includes: obtaining a remaining mileage requirement of the electric vehicle; and determining the target state of charge of the electric vehicle, including: determining the target state of charge according to the remaining mileage requirement.

[0016] In a second aspect, the present invention provides a charging control device for an electric vehicle, the device comprising: an acquisition module for acquiring electricity price information, charging cutoff time, maximum allowable charging power and current state of charge of the charging location where the electric vehicle is located; a processing module for determining a target state of charge of the electric vehicle, wherein the target state of charge is the state of charge that the electric vehicle needs to reach at the charging cutoff time; and a charging adjustment module for adjusting the current charging power of the electric vehicle according to the electricity price information, charging cutoff time, maximum allowable charging power, current state of charge and target state of charge, so that the charging cost required for the electric vehicle to complete charging is less than the charging cost required for constant power charging.

[0017] In an optional embodiment, the charging adjustment module includes: a first adjustment unit, which is used to adjust the current charging power to the first charging power when the remaining charging time is greater than the minimum charging time and the current electricity price is less than or equal to the first electricity price threshold, wherein the remaining charging time is the difference between the charging cutoff time and the current charging time, the minimum charging time is the time required to increase the current state of charge to the target state of charge according to the maximum allowable charging power, and the first charging power is less than or equal to the maximum allowable charging power; a second adjustment unit, which is used to adjust the current charging power to the first charging power when the remaining charging time is greater than the minimum charging time and the current electricity price is greater than or equal to the second electricity price threshold. threshold, the current charging power is adjusted to a second charging power, wherein the second charging power is less than the first charging power, and the second electricity price threshold is greater than the first electricity price threshold; a third adjustment unit is used to, when the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than the first electricity price threshold and the current electricity price is less than the second electricity price threshold, adjust the current charging power to a third charging power, wherein the third charging power is less than the first charging power and the third charging power is greater than the second charging power; a fourth adjustment unit is used to adjust the current charging power to the maximum allowable charging power when the remaining charging time is less than or equal to the minimum charging time.

[0018] In an optional embodiment, the device also includes: a first acquisition unit, used to obtain indication information, wherein the indication information is used to indicate whether the electric vehicle needs to supply power to the power grid; the second adjustment unit includes: a first adjustment subunit, used to adjust the current charging power to the second charging power when the electric vehicle does not need to supply power to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold.

[0019] In an optional embodiment, the device includes: a fifth adjustment unit, which is used to adjust the current charging power to 0 when the electric vehicle needs to supply electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold; the device also includes: a first control module, which is used to control the electric vehicle to supply electricity to the power grid.

[0020] In an optional embodiment, the device further includes: a determination module, configured to determine a first electricity price threshold and a second electricity price threshold based on an average electricity price obtained from an electricity price trend in a future time period.

[0021] In an optional embodiment, the charging adjustment module includes: a sixth adjustment unit, which is used to adjust the current charging power to the maximum allowable charging power during the valley electricity price time period included in the charging time period if the charging time period overlaps with the valley electricity price time period, and the valley electricity price time period included in the charging time period is greater than or equal to the minimum charging time, and adjust the current charging power to 0 during the peak electricity price time period included in the charging time period, wherein the charging time period is the time period between the charging cutoff time and the current charging time, and the minimum charging time is the time required to increase the current state of charge to the target state of charge according to the maximum allowable charging power. ; The seventh adjustment unit is used to adjust the current charging power to the maximum allowable charging power during the valley electricity price period included in the charging time period if there is an overlap between the charging time period and the valley electricity price period, and to adjust the current charging power to the fourth charging power during the peak electricity price period included in the charging time period, wherein the fourth charging power is less than the maximum allowable charging power; The eighth adjustment unit is used to adjust the current charging power to the fifth charging power if there is no overlap between the charging time period and the valley electricity price period, wherein the fifth charging power is less than or equal to the fourth charging power.

[0022] In an optional embodiment, after the current charging power is adjusted to 0 during the peak electricity price time period included in the charging time period, the device also includes: a second control module for controlling the electric vehicle to transmit electricity to the power grid during the peak electricity price time period included in the charging time period.

[0023] In an optional embodiment, before determining the target state of charge of the electric vehicle, the device also includes: a second acquisition unit for acquiring the remaining mileage requirement of the electric vehicle; the processing module includes: a determination unit for determining the target state of charge based on the remaining mileage requirement.

[0024] In a third aspect, the present invention provides an electric vehicle comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to thereby execute the electric vehicle charging control method of the first aspect or any corresponding embodiment thereof.

[0025] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the electric vehicle charging control method of the first aspect or any corresponding embodiment thereof.

[0026] In a fifth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the electric vehicle charging control method of the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 is a schematic diagram of an application scenario architecture of a charging control method for an electric vehicle according to an embodiment of the present invention;

[0029] Figure 2 is a flow chart of a charging control method for an electric vehicle according to an embodiment of the present invention;

[0030] Figure 3 is a flow chart of another charging control method for an electric vehicle according to an embodiment of the present invention;

[0031] Figure 4 is a flow chart of another method for controlling charging of an electric vehicle according to an embodiment of the present invention;

[0032] Figure 5 This is a structural block diagram of a charging control method and apparatus for an electric vehicle according to an embodiment of the present invention;

[0033] Figure 6 1 is a schematic diagram of a partial hardware structure of an electric vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. According to the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present invention.

[0035] To facilitate understanding of the present invention, the charging process of an electric vehicle is first described in conjunction with a specific application scenario architecture on which the charging control method for an electric vehicle provided by the present invention depends.

[0036] like Figure 1As shown, the architecture of a specific application scenario may include electric vehicles, charging equipment and power grids. The power grid is the energy source for the charging process of electric vehicles, which is used to provide stable power and transmit electric energy to the charging equipment through the distribution network. The charging equipment is the intermediate hub connecting the power grid and electric vehicles, responsible for the conversion, metering and safety control of electric energy, and interacts with the electric vehicles to coordinate charging parameters (such as charging voltage, charging current and charging power, etc.), and provides electric energy to the electric vehicles according to the coordinated charging parameters.

[0037] Specifically, after the electric vehicle arrives near the charging device and establishes a connection with the charging device (such as the user inserts the charging gun on the charging device into the charging port of the electric vehicle), the electric vehicle can determine the charging requirements based on user needs and battery status (such as battery voltage and temperature, etc.), and send the charging requirements to the charging device to negotiate charging parameters. After that, the charging device transfers the electric energy provided by the power grid to the electric vehicle according to the negotiation results to charge the power battery in the electric vehicle.

[0038] At the same time, through vehicle to grid (V2G) technology, electric vehicles can also communicate with the power grid in both directions. When the power grid load is peak, electric vehicles can control the discharge of power batteries to provide electricity to the grid.

[0039] For example, the charging equipment can be a DC charging station or an AC charging station. An AC charging station provides AC power, which is then converted to DC power by the electric vehicle's built-in on-board charger (OBC) before being fed into the vehicle's power battery. A DC charging station has a built-in high-power rectifier module that can directly convert AC power from the grid into high-voltage DC power (e.g., 300V to 900V), bypassing the OBC and charging the power battery directly. Compared to AC charging stations, DC charging stations offer faster charging speeds.

[0040] The following is a detailed description of the charging control method for an electric vehicle provided by the present invention in conjunction with the accompanying drawings. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a controller such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that herein.

[0041] The controller that executes the method may be a vehicle control unit (VCU) of an electric vehicle, a controller in a power grid, or a controller in a charging device.

[0042] In this embodiment, a charging control method for an electric vehicle is provided, which can be used in the above-mentioned controller, such as a vehicle controller. Figure 2FIG. 1 is a flow chart of a charging control method for an electric vehicle according to an embodiment of the present invention. Figure 2 As shown, the method includes the following steps:

[0043] Step S201 : Obtain the electricity price information, charging cut-off time, maximum allowed charging power and current state of charge of the electric vehicle at the charging location.

[0044] Specifically, the electricity market generally includes two pricing mechanisms: time-of-use (TOU) and real-time (RT) electricity prices. TOU electricity prices are based on fixed time periods, with prices remaining constant. A day can be divided into valley and peak periods based on the peak, flat, and valley characteristics of electricity load. The valley period is associated with lower prices than the peak period. Real-time electricity prices are dynamically adjusted based on the supply and demand relationship in the electricity market and the real-time load on the power grid. Prices fluctuate with minute- and hour-level changes in electricity supply and demand.

[0045] When the electricity price mechanism is time-of-use electricity price, the electricity price information may include valley electricity price time period, valley electricity price, peak electricity price time period and peak electricity price; when the electricity price mechanism is real-time electricity price, the electricity price information may include the current electricity price or the electricity price at various times of the day. The current electricity price refers to the electricity price at the current time (the time when the controller obtains the electricity price).

[0046] For example, after triggering the charging process, the vehicle controller can use the electric vehicle's built-in positioning device to determine the geographic location of the connected charging device (i.e., the electric vehicle's charging location). It can then connect to the local power grid application programming interface (API) through the vehicle's intelligent cockpit system to obtain electricity price information. The vehicle controller can also obtain local electricity price information from a cloud server.

[0047] The charging end time can refer to the user-defined time to end charging, or it can be the time when the user expects the electric vehicle to leave the charging device. The vehicle controller can obtain the charging end time from a mobile terminal connected to the electric vehicle (such as a mobile phone or tablet).

[0048] The maximum allowable charging power may refer to the maximum charging power that an electric vehicle can actually perform, which may be determined by the vehicle controller or the on-board charger.

[0049] For example, the vehicle controller or on-board charger can determine the maximum allowable charging power based on the maximum allowable charging power of the battery pack, the current ambient temperature, the charging seat temperature and the status of the charging seat temperature sensor. The specific calculation method of the maximum allowable charging power can be a commonly used method in the field and is not described in detail here.

[0050] Among them, the maximum charging power allowed by the battery pack is the upper limit of the maximum charging power that the battery pack (power battery) can withstand. The vehicle controller or on-board charger can obtain the maximum charging power allowed by the battery pack from the battery management system (BMS). The maximum charging power allowed by the battery pack can be determined by the BMS based on the battery health (State of Health, SOH), battery temperature and current state of charge.

[0051] The State of Charge (SOC) refers to the percentage of a battery's current remaining charge to its total capacity, representing the remaining charge. The SOC can be calculated and determined in real time by the BMS. The current SOC refers to the SOC of the electric vehicle obtained by the vehicle controller from the BMS at the current moment during the charging process. For example, the BMS can determine the SOC using the ampere-hour integration method or the open-circuit voltage method.

[0052] It should be understood that when the controller is other than the vehicle controller, the electricity price information, charging cut-off time, maximum allowable charging power and current state of charge of the electric vehicle charging location can be obtained from the vehicle controller.

[0053] Step S202: determining the target state of charge of the electric vehicle.

[0054] The target state of charge is the state of charge that the electric vehicle needs to reach at the end of charging.

[0055] For example, the target state of charge may be set by a user, and the vehicle controller may determine the target state of charge of the electric vehicle based on the user input.

[0056] Step S203 , adjusting the current charging power of the electric vehicle according to the electricity price information, the charging deadline, the maximum allowable charging power, the current state of charge, and the target state of charge, so that the charging cost required to complete charging of the electric vehicle is less than the charging cost required for constant power charging.

[0057] Among them, during the charging process, the charging power of the electric vehicle is dynamically adjusted, for example, it is adjusted once every preset time period (such as 15 minutes, 30 minutes or 1 hour, etc.). The current charging power can refer to the charging power of the electric vehicle at the current moment, and the preset time period can be determined based on the time of electricity price fluctuations.

[0058] Specifically, during the charging process, the vehicle controller dynamically adjusts the charging power of the electric vehicle based on electricity price information, within the constraints of the maximum allowable charging power, target state of charge, and charging cutoff time, to reduce charging costs. For example, the charging power may be increased during periods of low electricity prices and decreased during periods of high electricity prices.

[0059] After determining the current charging power, the vehicle controller also controls the electric vehicle to charge at the adjusted current charging power. For example, the vehicle controller may send a charging instruction to the charging device, including the adjusted current charging power, instructing the charging device to supply power to the battery pack at the adjusted current charging power. The vehicle controller may also control the onboard charger to charge the battery pack at the adjusted current charging power.

[0060] The electric vehicle charging control method provided in this embodiment dynamically adjusts the electric vehicle's current charging power during charging based on electricity price information, charging cutoff time, maximum allowable charging power, current state of charge, and target state of charge. This not only reduces charging costs but also smooths grid load fluctuations and improves renewable energy absorption capacity. Furthermore, the smooth charging power fluctuations extend the battery pack's service life.

[0061] The method of adjusting the current charging power when the electricity price is a real-time electricity price is different from the method of adjusting the current charging power when the electricity price is a time-of-use electricity price. The following describes the two different adjustment methods in detail with specific embodiments.

[0062] In this embodiment, another charging control method for electric vehicles is provided, wherein the electricity price mechanism is a real-time electricity price. Figure 3 FIG. 1 is a flow chart of another method for controlling charging of an electric vehicle according to an embodiment of the present invention. Figure 3 As shown, the method includes the following steps:

[0063] Step S301 : Obtain the electricity price information, charging cut-off time, maximum allowed charging power and current state of charge of the electric vehicle at the charging location.

[0064] For details, please see Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0065] Step S302: determining the target state of charge of the electric vehicle.

[0066] In some embodiments, the electric vehicle charging control method further includes: obtaining the remaining range requirement of the electric vehicle. In this case, the above step S302 includes: determining the target state of charge according to the remaining range requirement.

[0067] Specifically, the vehicle controller obtains the remaining mileage requirement based on user input. After determining the remaining mileage requirement, the target state of charge can be determined based on the correspondence between mileage and energy consumption level, the remaining mileage requirement and the total battery capacity.

[0068] For example, the correspondence between mileage and energy consumption level is 15 kWh per 100 kilometers, the remaining mileage requirement is 200 kilometers, and the total battery capacity is 60 kWh, then the target state of charge = (2×15) / 60 = 50%.

[0069] Step S303 , adjusting the current charging power of the electric vehicle according to the electricity price information, the charging deadline, the maximum allowable charging power, the current state of charge, and the target state of charge, so that the charging cost required to complete charging of the electric vehicle is less than the charging cost required for constant power charging.

[0070] Specifically, the above step S303 includes:

[0071] Step S3031: When the remaining charging time is greater than the minimum charging time and the current electricity price is less than or equal to a first electricity price threshold, the current charging power is adjusted to the first charging power.

[0072] Among them, the remaining charging time is the difference between the charging cutoff time and the current charging time, the minimum charging time is the time required to increase the current state of charge to the target state of charge according to the maximum allowable charging power, and the first charging power is less than or equal to the maximum allowable charging power.

[0073] For example, if the current charging time is 22:00 and the charging deadline is 8:00 the next day, the remaining charging time is 10 hours. The minimum charging time can be calculated as ((target state of charge - current state of charge) × total battery capacity) / maximum allowed charging power.

[0074] Specifically, the first electricity price threshold K1 can be a defined low electricity price reference value, and the first charging power P1 can be a defined high charging power reference value. When the current electricity price (current_price) is less than or equal to the first electricity price threshold K1, that is, current_price≤K1, it means that the electricity price is low. At this time, when the remaining charging time is greater than the minimum charging time, the current charging power is increased.

[0075] For example, the first electricity price threshold K1 and the first charging power P1 may be determined by a designer and configured in advance in the vehicle controller.

[0076] Step S3032: When the remaining charging time is greater than the minimum charging time, and if the current electricity price is greater than or equal to the second electricity price threshold, the current charging power is adjusted to the second charging power.

[0077] The second charging power is less than the first charging power, and the second electricity price threshold is greater than the first electricity price threshold.

[0078] Specifically, the second electricity price threshold K2 can be a defined high electricity price reference value, and the second charging power P2 can be a defined low charging power reference value. When the current electricity price (current_price) is greater than or equal to the second electricity price threshold K2, that is, current_price ≥ K2, it means that the electricity price is high. At this time, when the remaining charging time is greater than the minimum charging time, the current charging power is reduced.

[0079] For example, the second electricity price threshold K2 and the second charging power P2 can be determined by a designer and configured in advance in the vehicle controller. The second charging power P2 can be the minimum charging power.

[0080] Optionally, the vehicle controller may determine the first electricity price threshold and the second electricity price threshold based on an average electricity price obtained according to an electricity price trend in a future time period.

[0081] The electricity price information also includes electricity price trends in future time periods.

[0082] Specifically, the future time period may refer to a preset time period after the charging start time, and the duration of the future time period may be 24 hours. The first electricity price threshold may be the product of the average electricity price avg_price and a first coefficient less than 1, and the second electricity price threshold may be the product of the average electricity price avg_price and a second coefficient greater than 1, for example, K1 = 0.8 × avg_price, and K2 = 1.2 × avg_price.

[0083] In this embodiment, the first electricity price threshold and the second electricity price threshold are determined based on the average electricity price obtained based on the electricity price trend in the future time period. The first electricity price threshold and the second electricity price threshold can be set more flexibly, thereby more accurately characterizing the fluctuation of electricity prices and better optimizing the charging cost.

[0084] Exemplarily, the first charging power may be the product of the maximum allowable charging power and a third coefficient, and the second charging power may be the product of the maximum allowable charging power and a fourth coefficient, 0.5<third coefficient≤1, 0.2<fourth coefficient<0.5. For example, the value of the third coefficient may be within 0.9 to 1, and the value of the fourth coefficient may be within 0.2 to 0.3.

[0085] Step S3033: When the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than the first electricity price threshold and the current electricity price is less than the second electricity price threshold, the current charging power is adjusted to the third charging power.

[0086] Specifically, when the remaining charging time is greater than the minimum charging time, if K1<current_price<K2, the current charging power is adjusted to the third charging power P3.

[0087] The third charging power is less than the first charging power and greater than the second charging power. For example, if the first charging power P1 is 10kW and the second charging power P2 is 2kW, the third charging power can be a value between 2kW and 10kW, for example, 3kW, 5kW, 6kW, or 8kW.

[0088] Exemplarily, the third charging power P3 may be (first charging power+second charging power) / 2, that is, P3=(P1+P2) / 2.

[0089] Step S3034: When the remaining charging time is less than or equal to the minimum charging time, the current charging power is adjusted to the maximum allowed charging power.

[0090] Specifically, when the remaining charging time is less than or equal to the minimum charging time, in order to avoid a large deviation between the state of charge at the charging cutoff time and the target state of charge, the vehicle controller enters the emergency charging mode.

[0091] In this embodiment, the current electricity price fluctuation is determined by a threshold and then the current charging power is adjusted. This has high flexibility and adapts to dynamic changes in the power grid. It can not only control the charging cost more accurately, but also indirectly help the power grid balance supply and demand.

[0092] In some embodiments, the electric vehicle is equipped with a V2G function, and the electric vehicle charging control method further includes: obtaining instruction information. The instruction information is used to indicate whether the electric vehicle needs to supply power to the power grid. Specifically, upon receiving the power grid dispatch instruction, the vehicle controller can determine that the electric vehicle needs to supply power to the power grid.

[0093] At this time, the above step S3032 can be specifically: when the electric vehicle does not need to supply electricity to the grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold, the current charging power is adjusted to the second charging power.

[0094] The above-mentioned step S303 further includes: when the electric vehicle needs to transmit electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold, adjusting the current charging power to 0. Based on this, the electric vehicle charging control method further includes: controlling the electric vehicle to transmit electricity to the power grid.

[0095] For example, electric vehicles can transmit electrical energy to the power grid through charging equipment.

[0096] Specifically, when the V2G function is turned on in an electric vehicle, if the remaining charging time is greater than the minimum charging time, it means that the charging has not entered the emergency charging mode. At this time, the current charging power can be adjusted to 0, so that the battery pack will suspend charging and reverse discharge to provide electricity to the grid in exchange for electricity price compensation.

[0097] In this embodiment, another charging control method for an electric vehicle is provided, wherein the electricity price mechanism is a time-of-use electricity price. Figure 4 FIG. 1 is a flow chart of another method for controlling charging of an electric vehicle according to an embodiment of the present invention. Figure 4 As shown, the method includes the following steps:

[0098] Step S401: Obtain the electricity price information, charging cut-off time, maximum allowed charging power and current state of charge of the electric vehicle at the charging location.

[0099] For details, please see Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0100] Step S402: determining the target state of charge of the electric vehicle.

[0101] For details, please see Figure 2 Step S202 of the embodiment shown or Figure 3 Step S302 of the illustrated embodiment will not be described in detail here.

[0102] Step S403 , adjusting the current charging power of the electric vehicle according to the electricity price information, the charging deadline, the maximum allowable charging power, the current state of charge, and the target state of charge, so that the charging cost required to complete charging of the electric vehicle is less than the charging cost required for constant power charging.

[0103] Specifically, the above step S403 includes:

[0104] Step S4031: If the charging time period overlaps with the off-peak electricity price time period, and the off-peak electricity price time period included in the charging time period is greater than or equal to the minimum charging time, then during the off-peak electricity price time period included in the charging time period, the current charging power is adjusted to the maximum allowed charging power, and during the peak electricity price time period included in the charging time period, the current charging power is adjusted to 0.

[0105] The charging time period is the period between the charging deadline and the current charging time, and the minimum charging time is the time required to raise the current state of charge to the target state of charge at the maximum allowed charging power. Off-peak pricing periods can be times when the power system's load is low and the power supply is sufficient, while peak pricing periods can be times when there are a high concentration of electricity users and the power supply is tight.

[0106] For example, if the current charging time is 20:00 and the charging deadline is 8:00 the next day, the charging time period is from 20:00 to 8:00 the next day. The off-peak price period can be from 23:00 to 7:00 the next day, and the peak price period can be from 7:00 to 23:00, excluding the two endpoints of 7:00 and 23:00.

[0107] In some embodiments, after step S4031, the charging control method for an electric vehicle may further include: controlling the electric vehicle to transmit electric energy to the power grid during a peak electricity price period included in the charging period.

[0108] Specifically, the current charging power is adjusted to 0, the battery pack is suspended from charging, and reverse discharge is performed to provide power to the grid in exchange for electricity price compensation.

[0109] Step S4032: If the charging time period overlaps with the off-peak electricity price time period, and the off-peak electricity price time period included in the charging time period is less than the minimum charging time, the current charging power is adjusted to the maximum allowable charging power during the off-peak electricity price time period included in the charging time period, and the current charging power is adjusted to the fourth charging power during the peak electricity price time period included in the charging time period.

[0110] The fourth charging power is less than the maximum allowable charging power, and the fourth charging power may be the same as the second charging power.

[0111] Step S4033: If the charging time period does not overlap with the off-peak electricity price time period, the current charging power is adjusted to the fifth charging power.

[0112] The fifth charging power is less than or equal to the fourth charging power, and the fifth charging power may also be equal to the third charging power.

[0113] Specifically, the time-of-use electricity price adjustment strategy is to charge at full power during the off-peak electricity price period when there is ample charging time, and suspend charging or discharge to the outside during the peak electricity price period.

[0114] In this embodiment, the current charging power is adjusted according to the off-peak electricity price period and the peak electricity price period, which makes the operation simpler. Electric vehicles do not need high-frequency data interaction, which can reduce errors caused by communication failures and has lower hardware requirements for vehicles and charging piles.

[0115] In this embodiment, a charging control device for an electric vehicle is also provided. The device is used to implement the above-mentioned embodiments and preferred embodiments. The details that have been described will not be repeated here. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

[0116] This embodiment provides a charging control device for an electric vehicle, such as Figure 5 Shown, including:

[0117] An acquisition module 501 is used to obtain the electricity price information, charging cut-off time, maximum allowed charging power and current state of charge of the electric vehicle at the charging location;

[0118] The processing module 502 is used to determine a target state of charge of the electric vehicle, wherein the target state of charge is the state of charge that the electric vehicle needs to reach at the charging cutoff time;

[0119] The charging adjustment module 503 is used to adjust the current charging power of the electric vehicle according to the electricity price information, the charging deadline, the maximum allowable charging power, the current state of charge and the target state of charge, so that the charging cost required for the electric vehicle to complete charging is less than the charging cost required for constant power charging.

[0120] In some optional implementations, adjusting the charging module 503 includes:

[0121] a first adjustment unit, configured to adjust the current charging power to a first charging power when the remaining charging time is greater than the minimum charging time and the current electricity price is less than or equal to a first electricity price threshold, wherein the remaining charging time is the difference between the charging cutoff time and the current charging time, the minimum charging time is the time required to increase the current state of charge to a target state of charge at the maximum allowable charging power, and the first charging power is less than or equal to the maximum allowable charging power;

[0122] a second adjustment unit, configured to adjust the current charging power to a second charging power when the remaining charging time is greater than the minimum charging time and the current electricity price is greater than or equal to a second electricity price threshold, wherein the second charging power is less than the first charging power and the second electricity price threshold is greater than the first electricity price threshold;

[0123] a third adjustment unit, configured to adjust the current charging power to a third charging power when the remaining charging time is greater than the minimum charging time and the current electricity price is greater than the first electricity price threshold and less than the second electricity price threshold, wherein the third charging power is less than the first charging power and greater than the second charging power;

[0124] The fourth adjusting unit is configured to adjust the current charging power to the maximum allowable charging power when the remaining charging time is less than or equal to the minimum charging time.

[0125] In some optional embodiments, the device further comprises:

[0126] A first acquiring unit is configured to acquire indication information, wherein the indication information is used to indicate whether the electric vehicle needs to supply power to the power grid;

[0127] The second adjustment unit includes:

[0128] The first adjustment subunit is used to adjust the current charging power to the second charging power when the electric vehicle does not need to supply electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to the second electricity price threshold.

[0129] In some optional embodiments, the device comprises:

[0130] a fifth adjustment unit, configured to adjust the current charging power to 0 when the electric vehicle needs to supply power to the power grid and the remaining charging time is greater than the minimum charging time and if the current electricity price is greater than or equal to a second electricity price threshold;

[0131] The device also includes: a first control module, which is used to control the electric vehicle to transmit electric energy to the power grid.

[0132] In some optional embodiments, the device further comprises:

[0133] The determination module is used to determine a first electricity price threshold and a second electricity price threshold according to an average electricity price obtained from an electricity price trend in a future time period.

[0134] In some optional implementations, adjusting the charging module 503 includes:

[0135] a sixth adjustment unit, configured to, if the charging time period overlaps with the off-peak electricity price time period, and the off-peak electricity price time period included in the charging time period is greater than or equal to the minimum charging time, adjust the current charging power to the maximum allowable charging power during the off-peak electricity price time period included in the charging time period, and adjust the current charging power to 0 during the peak electricity price time period included in the charging time period, wherein the charging time period is the time period between the charging cutoff time and the current charging time, and the minimum charging time is the time required to increase the current state of charge to the target state of charge at the maximum allowable charging power;

[0136] a seventh adjustment unit, configured to adjust the current charging power to the maximum allowable charging power during the valley electricity price period included in the charging time period, and to adjust the current charging power to a fourth charging power during the peak electricity price period included in the charging time period, if the charging time period overlaps with the valley electricity price period, and the valley electricity price period included in the charging time period is less than the minimum charging time, wherein the fourth charging power is less than the maximum allowable charging power;

[0137] an eighth adjusting unit, configured to adjust the current charging power to a fifth charging power if the charging time period does not overlap with the off-peak electricity price time period, wherein the fifth charging power is less than or equal to the fourth charging power.

[0138] In some optional embodiments, after adjusting the current charging power to 0 during a peak electricity price period included in the charging time period, the apparatus further includes:

[0139] The second control module is used to control the electric vehicle to transmit electric energy to the power grid through the charging pile during the peak electricity price period included in the charging period.

[0140] In some optional embodiments, before determining the target state of charge of the electric vehicle, the apparatus further includes:

[0141] A second acquisition unit is used to obtain the remaining mileage requirement of the electric vehicle;

[0142] The processing modules include:

[0143] The determination unit is used to determine the target state of charge according to the remaining mileage requirement.

[0144] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0145] The charging control device of the electric vehicle in this embodiment is presented in the form of a functional unit, where the unit refers to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0146] The embodiment of the present invention further provides an electric vehicle, such as Figure 6 As shown, the electric vehicle includes: one or more processors 610, a memory 620, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses and can be installed on a common motherboard or in other ways as needed. The processor can process instructions executed in the electric vehicle, including instructions stored in or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Figure 6 A processor 610 is taken as an example.

[0147] Processor 610 may be a central processing unit, a network processor, or a combination thereof. Processor 610 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0148] The memory 620 stores instructions that can be executed by at least one processor 610, so as to enable the at least one processor 610 to implement the method shown in the above embodiment.

[0149] The memory 620 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function; the data storage area may store data generated based on the use of the electric vehicle. Furthermore, the memory 620 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0150] The memory 620 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 620 may also include a combination of the above types of memory.

[0151] The electric vehicle further includes a communication interface 630 for the electric vehicle to communicate with other devices or a communication network.

[0152] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or downloaded through a network and originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0153] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0154] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0155] In the description of this specification, the reference terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0156] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0157] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall all fall within the scope defined by the present invention.

Claims

1. A charging control method for an electric vehicle, characterized in that: The method comprises: Obtain the electricity price information, charging cut-off time, maximum allowed charging power and current state of charge of the electric vehicle at the charging location; Determining a target state of charge of the electric vehicle, wherein the target state of charge is a state of charge that the electric vehicle needs to reach at the charging cut-off time; According to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge, and the target state of charge, the current charging power of the electric vehicle is adjusted so that the charging cost required to complete charging of the electric vehicle is less than the charging cost required for constant power charging.

2. The method according to claim 1, characterized in that The electricity price information includes a current electricity price, and adjusting the current charging power of the electric vehicle according to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge, and the target state of charge includes: When the remaining charging time is greater than the minimum charging time, if the current electricity price is less than or equal to a first electricity price threshold, adjusting the current charging power to a first charging power, where the remaining charging time is the difference between the charging cutoff time and the current charging time, the minimum charging time is the time required to increase the current state of charge to the target state of charge at the maximum allowable charging power, and the first charging power is less than or equal to the maximum allowable charging power; When the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to a second electricity price threshold, adjusting the current charging power to a second charging power, wherein the second charging power is less than the first charging power and the second electricity price threshold is greater than the first electricity price threshold; When the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than the first electricity price threshold and less than the second electricity price threshold, adjusting the current charging power to a third charging power, wherein the third charging power is less than the first charging power and greater than the second charging power; When the remaining charging time is less than or equal to the minimum charging time, the current charging power is adjusted to the maximum allowable charging power.

3. The method according to claim 2, characterized in that Before adjusting the current charging power of the electric vehicle according to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge, and the target state of charge, the method further includes: Acquiring indication information, wherein the indication information is used to indicate whether the electric vehicle needs to supply power to the power grid; When the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to a second electricity price threshold, adjusting the current charging power to a second charging power includes: When the electric vehicle does not need to supply electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to a second electricity price threshold, the current charging power is adjusted to a second charging power.

4. The method according to claim 3, characterized in that The adjusting the current charging power of the electric vehicle according to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge, and the target state of charge further includes: When the electric vehicle needs to supply electricity to the power grid and the remaining charging time is greater than the minimum charging time, if the current electricity price is greater than or equal to a second electricity price threshold, adjusting the current charging power to 0; The method further includes: controlling the electric vehicle to transmit electric energy to a power grid.

5. The method according to any one of claims 2 to 4, characterized in that The electricity price information further includes an electricity price trend for a future time period, the start time of the future time period being greater than or equal to the charging start time, and before adjusting the current charging power of the electric vehicle based on the electricity price information, the charging cutoff time, the maximum allowable charging power, the current state of charge, and the target state of charge, the method further includes: The first electricity price threshold and the second electricity price threshold are determined according to an average electricity price obtained according to the electricity price trend in the future time period.

6. The method according to claim 1, characterized in that The electricity price information includes a valley electricity price time period and a peak electricity price time period, and adjusting the current charging power of the electric vehicle according to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge, and the target state of charge includes: If the charging time period overlaps with the off-peak electricity price time period, and the off-peak electricity price time period included in the charging time period is greater than or equal to the minimum charging time, then during the off-peak electricity price time period included in the charging time period, the current charging power is adjusted to the maximum allowable charging power, and during the peak electricity price time period included in the charging time period, the current charging power is adjusted to 0, wherein the charging time period is the time period between the charging cutoff time and the current charging time, and the minimum charging time is the time required to increase the current state of charge to the target state of charge at the maximum allowable charging power; If the charging time period overlaps with the off-peak electricity price time period, and the off-peak electricity price time period included in the charging time period is less than the minimum charging duration, then the current charging power is adjusted to the maximum allowable charging power during the off-peak electricity price time period included in the charging time period, and the current charging power is adjusted to a fourth charging power during the peak electricity price time period included in the charging time period, wherein the fourth charging power is less than the maximum allowable charging power; If the charging time period does not overlap with the off-peak electricity price time period, the current charging power is adjusted to a fifth charging power, wherein the fifth charging power is less than or equal to the fourth charging power.

7. The method according to claim 6, characterized in that During a peak electricity price period included in the charging time period, after adjusting the current charging power to 0, the method further includes: During a peak electricity price time period included in the charging time period, the electric vehicle is controlled to transmit electric energy to a power grid.

8. The method according to any one of claims 1 to 4 or 6 or 7, characterized in that Before determining the target state of charge of the electric vehicle, the method further includes: Obtaining the remaining mileage requirement of the electric vehicle; Determining the target state of charge of the electric vehicle includes: The target state of charge is determined according to the remaining mileage requirement.

9. A charging control device for an electric vehicle, characterized in that: The device comprises: An acquisition module is used to obtain the electricity price information, charging cut-off time, maximum allowable charging power and current state of charge of the electric vehicle at the charging location; a processing module, configured to determine a target state of charge of the electric vehicle, wherein the target state of charge is a state of charge that the electric vehicle needs to reach at the charging cut-off time; and adjusting the charging module, for adjusting the current charging power of the electric vehicle according to the electricity price information, the charging cut-off time, the maximum allowable charging power, the current state of charge, and the target state of charge, so that the charging cost required to complete charging of the electric vehicle is less than the charging cost required for constant power charging.

10. An electric vehicle, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the charging control method for an electric vehicle according to any one of claims 1 to 8 by executing the computer instructions.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the electric vehicle to execute the charging control method for the electric vehicle according to any one of claims 1 to 8.

12. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the charging control method for an electric vehicle according to any one of claims 1 to 8.

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