Automatic control method for switching power supply

Abstract

The invention relates to the technical field of power supply, and discloses a switching power supply automatic control method, which comprises the following steps: acquiring charging information including charging interface power information and charging charge information, configuring a switching power supply for a charging interface for controlling the charging power and the starting and stopping of the charging power supply, and according to the charging interface power information and the charge information, controlling the charging power supply to start and stop. Dividing the power and charge of a charging interface, setting a first stage and a second stage of a vehicle charging process, ending the first stage and entering the second stage when the electric quantity of the vehicle reaches 90%, adjusting a power distribution strategy to protect a battery, and distributing the charging stages according to the residual electric quantity when the vehicle is connected to the charging interface, obtaining the time of accessing and taking out the vehicle by the user, calculating the actual time, setting a power distribution strategy, and if the actual time is greater than the target time, executing a first power distribution strategy; and if the actual time is less than the target time, executing a second power distribution strategy.

Description

Technical Field

[0001] The invention relates to the technical field of power supply, and in particular to an automatic control method for a switching power supply. Background Art

[0002] With the popularity of electric vehicles, shared charging stations have become an important part of urban infrastructure. However, the operation of charging stations faces many challenges, such as low charging efficiency, opaque charging fee calculation, and unreasonable allocation of charging resources. These problems not only affect the user's charging experience, but also increase the operating costs of charging stations.

[0003] Existing charging station management systems often lack intelligent charging power control and charging stage management, resulting in energy waste and battery damage risks during the charging process. In addition, the calculation of charging costs is usually based on simple power metering, without considering the impact of charging speed and charging time on costs, resulting in unreasonable charges.

[0004] Therefore, developing a method for automatic control of switching power supply is of great significance for improving the operational efficiency of charging stations, optimizing the allocation of charging resources, and enhancing the user charging experience. This new method needs to be able to intelligently control the charging power and charging stage based on the power information of the charging interface and the charging fee information, while providing transparent charging fee calculation to ensure that the charging process is both efficient and economical. Through this method, intelligent management of charging stations can be achieved, charging efficiency can be improved, operating costs can be reduced, and user satisfaction can be improved. Summary of the invention

[0005] The present invention provides a switching power supply automatic control method for facilitating solving the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a switching power supply automatic control method, comprising:

[0007] Obtaining charging information of a shared charging station, wherein the charging information includes charging interface power information and charging charge information;

[0008] Multiple charging ports are set up in the shared charging station, and a switching power supply is configured for each charging port;

[0009] The switching power supply is used to control the charging power and start and stop the charging power supply during the charging process of the vehicle;

[0010] According to the charging interface power information and charging charge information, the power of the charging interface and the corresponding charge at each power are divided;

[0011] Set the charging stage of the vehicle during the charging process, which is divided into the first stage and the second stage;

[0012] The charging phase of the vehicle is allocated according to the remaining power of the vehicle when the vehicle is connected to the charging port;

[0013] Through the shared charging station, the remaining power of the vehicle is obtained when the user connects the vehicle to the charging port;

[0014] According to the remaining power of the vehicle, the time required for the vehicle to be charged at the first-level power to the target power set by the user is obtained, which is recorded as the target time;

[0015] The target power level set by the user is that when the vehicle is charged to the target power level, the switch power supply turns off the charging power source and the vehicle stops charging;

[0016] Through the shared charging station, the time when the user connects the vehicle to the charging interface is obtained, which is recorded as the first time, and the time when the user sets to take out the vehicle is obtained, which is recorded as the second time;

[0017] According to the first moment and the second moment, the time interval between the two moments is obtained and recorded as the actual time;

[0018] Setting a power allocation strategy, which is divided into a first power allocation strategy and a second power allocation strategy;

[0019] If the actual time is greater than the target time, a first power allocation strategy is executed on the vehicle;

[0020] If the actual time is less than the target time, the second power distribution strategy is executed for the vehicle.

[0021] Optionally, the power information of the charging interface and the charging charge information are divided into the power of the charging interface and the corresponding charge, including:

[0022] Obtain the charging interface power information and divide the charging interface power in the shared charging station, specifically:

[0023] Level 1 power, power range is [0w, 200w];

[0024] Second level power, power range is [200w, 300w];

[0025] Three levels of power, power range is [300w, 500w];

[0026] During the charging process, charging is performed according to the maximum value of each power range;

[0027] In a unit of time, the charging charges corresponding to each level of power are different;

[0028] According to the divided charging interface power, the standard rate is set as follows:

[0029] The standard rate for level 1 power is set to Q, the standard rate for level 2 power is set to W, and the standard rate for level 3 power is set to E;

[0030] The standard rate is the fee charged for each kilowatt-hour that the vehicle is charged, in units of RMB per kilowatt-hour.

[0031] Furthermore, the setting of the charging stage of the vehicle during the charging process is divided into a first stage and a second stage, including:

[0032] The first stage is that after the vehicle is connected to the charging port, it is charged by the switching power supply according to the recommended charging port power. When the vehicle power reaches 90%, this time is recorded as the end time of the first stage;

[0033] According to the charging interface power, the target charging cost and corresponding charging time of the vehicle in the first stage are obtained;

[0034] The second stage is that when the current power of the vehicle is 90%, if the current power is less than the target power set by the user, the charging power is adjusted by the switching power supply to charge until the vehicle power reaches the target power.

[0035] Optionally, obtaining the target charging cost and the corresponding charging time of the vehicle in the first stage includes:

[0036] Calculate the charging costs of the vehicle during the first stage of charging at power levels 1 to 3 respectively;

[0037] Charging fee calculation formula: Charging fee = charging power (unit: kilowatt-hour / hour, kWh / h) × charging time (unit: hour, h) × standard rate corresponding to the power level (unit: yuan / kilowatt-hour, yuan / kWh);

[0038] According to the charging cost calculation formula, the charging cost corresponding to each level of power is calculated respectively, and recorded as the first cost, the second cost and the third cost respectively;

[0039] Arrange the first fee, the second fee and the third fee in ascending order to form a fee sorting sequence;

[0040] And select the charging cost that ranks first in the cost ranking and record it as the target charging cost;

[0041] The charging time corresponding to the target charging cost is obtained and recorded as the first time.

[0042] Furthermore, the allocating the charging stages of the vehicle according to the remaining power of the vehicle includes:

[0043] If the vehicle's remaining power does not reach 90%, the vehicle is set to charge in the first and second stages;

[0044] If the remaining power of the vehicle is more than 90% and less than 100%, the vehicle is set to charge in the second stage;

[0045] If the remaining power of the vehicle reaches 100%, the charging power supply is turned off by switching the power supply on and off.

[0046] Optionally, if the actual time is greater than the target time, executing a first power allocation strategy for the vehicle includes:

[0047] If the charging stage of the vehicle includes the first stage and the second stage, the vehicle is marked as a first-category vehicle;

[0048] Obtaining the time required for the first type of vehicle to charge using the first power in the second stage;

[0049] Obtain the target charging cost and corresponding charging time of the first type of vehicles in the first stage;

[0050] The charging time and the corresponding charging power of the first stage and the charging time and the corresponding charging power of the second stage are set as the power allocation strategy for the first type of vehicles during the charging process;

[0051] If the charging stage of the vehicle only includes the first stage, the vehicle is marked as a second-category vehicle;

[0052] Obtain the time required for the second type of vehicles to be charged in the first stage;

[0053] The charging time and the corresponding charging power of the first stage are set as the power allocation strategy for the second type of vehicles during the charging process;

[0054] If the charging stage of the vehicle only includes the second stage, the vehicle is marked as a third-category vehicle;

[0055] Obtaining the time required for the third type of vehicle to charge using the first power in the second stage;

[0056] The charging time and corresponding charging power of the second stage are set as the power allocation strategy for the third type of vehicles during the charging process.

[0057] Furthermore, if the actual time is less than the target time, executing a second power allocation strategy for the vehicle includes:

[0058] If the charging stage of the vehicle includes the first stage and the second stage, the vehicle is marked as a fourth category vehicle;

[0059] Obtain the time required for the fourth category vehicle to be charged to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the first and second stages of the fourth category vehicle.

[0060] If the charging stage of the vehicle only includes the first stage, the vehicle is marked as a fifth category vehicle;

[0061] Obtain the time required for the fifth category vehicle to charge to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the first stage of the fifth category vehicle. If it is shorter than the actual time, obtain the target charging cost and first time of the fifth category vehicle in the first stage;

[0062] If the first time of the fifth category vehicle is greater than the actual time, the third level power is selected for charging in the first stage of the fifth category vehicle;

[0063] If the first time of the fifth category vehicle is less than the actual time, then in the first stage of the fifth category vehicle, the charging power corresponding to the target charging cost is selected for charging;

[0064] If the vehicle's charging phase only includes the second phase, the vehicle is marked as a Class 6 vehicle;

[0065] Obtain the time required for the sixth category vehicle to charge to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the second stage of the sixth category vehicle. If it is shorter than the actual time, obtain the target charging cost and the first time of the sixth category vehicle in the second stage;

[0066] If the first time of the sixth category vehicle is greater than the actual time, the third level power is selected for charging in the second stage of the sixth category vehicle;

[0067] If the first time of the sixth category vehicle is less than the actual time, then in the second stage of the sixth category vehicle, the charging power corresponding to the target charging fee is selected for charging.

[0068] The present invention has the following beneficial effects:

[0069] 1. The automatic control method of the switching power supply configures a switching power supply for each charging interface by acquiring power information and charging information of the charging interface, and controls the charging power of the vehicle during the charging process through the switching power supply and charges at the lowest cost, so as to ensure the charging efficiency while taking the charging cost into consideration, and divide the charging process into two stages. In the first stage, the battery is quickly charged to 90%, and then the battery is switched to the trickle charge in the second stage according to the actual situation. This staged management helps to reduce damage to the battery. The charging stage is allocated according to the remaining power when the vehicle is connected and the target power set by the user, ensuring that the charging process meets the user's needs without over-consuming resources. According to the actual time and the target time, the first power allocation strategy or the second power allocation strategy is selected through the switching power supply to ensure the optimal charging effect within a limited time, allowing the user to set the time to remove the vehicle, and adjusting the charging plan according to the user's schedule to improve the user's charging experience. The trickle charge strategy in the second stage helps to protect the battery and avoid overcharging, thereby extending the battery life.

[0070] 2. The switching power supply automatic control method provides power management for different types of electric vehicles by clearly dividing the power of the charging interface into different levels, ensuring that the charging process is both efficient and safe, setting different standard rates for each level of power, and realizing a more flexible charging strategy. The switching power supply can select the corresponding power level for charging according to the user's charging demand time, and by charging according to the maximum value of each power range, it ensures that the charging capacity of the charging station is fully utilized during the charging process, thereby improving the utilization efficiency of charging resources.

[0071] 3. The switching power supply automatic control method can quickly charge the vehicle to 90% by providing the recommended charging interface power to the vehicle in the first stage, thereby providing a large amount of power to the vehicle in the shortest time and improving the charging efficiency. The charging process is divided into two specific stages. In the second stage, if the current power of the vehicle does not reach the target power set by the user, the charging power can be automatically adjusted to continue charging to ensure that the power meets the user's needs. The target charging cost and the corresponding charging time are obtained in the first stage. The charging power adjustment strategy in the second stage can adjust the charging speed according to the remaining power and the remaining charging time.

[0072] 2. The automatic control method of the switching power supply provides users with detailed charging costs by calculating the charging costs at different power levels respectively, helping users understand the charging costs under different charging options, and forming a cost ranking sequence. Users can see the cost comparison of charging at different power levels, and the switching power supply can make a charging option with lower costs, select the charging cost with the first cost ranking as the target charging cost, obtain the charging time corresponding to the target charging cost, and select the lowest cost option for charging in the first or second stage.

[0073] 3. The switching power supply automatic control method detects the remaining power of the vehicle and allocates the charging stage accordingly. For vehicles with less than 90% power, fast charging is arranged in the first stage and then trickle charging is entered in the second stage. For vehicles with more than 90% power, charging is entered in the second stage. When the vehicle power reaches 100%, the charging power supply is automatically turned off to prevent overcharging, protect the battery and extend its service life.

[0074] 2. The switching power supply automatic control method determines the charging strategy by judging whether the actual time is greater than the target time, ensures that the charging plan matches the user's needs and time limits, and optimizes the charging plan. The vehicles are divided into three categories according to the different needs of the charging stage, and a corresponding power allocation strategy is formulated for each type of vehicle. For the first type of vehicles, since there is enough time to reach the target power, a higher charging power can be used to improve the charging efficiency. For the second type of vehicles, since the target charging amount is less than 90%, it is ensured that the charging is completed within a limited time to meet the user's charging needs. For the third type of vehicles, that is, the remaining power is already high, it is ensured that the target power is charged.

[0075] 3. The switching power supply automatic control method evaluates whether the actual charging time is sufficient. For time-sensitive situations, the vehicle is divided into the fourth, fifth and sixth categories according to different charging requirements and time limits. For the fourth category of vehicles, charging is performed by using the third level of power to provide more power within a limited time. For the fifth and sixth categories of vehicles, a trade-off is made between charging cost and time, and the most appropriate charging power is selected to achieve the user's target charging cost and time requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 It is a flow chart of the steps of the present invention. DETAILED DESCRIPTION

[0077] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0078] Embodiment 1: acquiring charging information of a shared charging station, wherein the charging information includes charging interface power information and charging charge information;

[0079] Multiple charging ports are set up in the shared charging station, and a switching power supply is configured for each charging port;

[0080] The switching power supply is used to control the charging power and start and stop the charging power supply during the charging process of the vehicle;

[0081] According to the charging interface power information and charging charge information, the power of the charging interface and the corresponding charge at each power are divided;

[0082] Set the charging stage of the vehicle during the charging process, which is divided into the first stage and the second stage;

[0083] After the vehicle is connected to the charging port, the first stage of charging begins until the vehicle's charge reaches 90%. Once the vehicle's charge reaches 90%, this time point is recorded, marking the end of the first stage.

[0084] After the first stage, the vehicle enters the second stage of charging. In this stage, the switch power switches the power and controls the charging process to protect the battery and extend its life. This stage of charging will continue until the vehicle is fully charged, that is, it reaches 100%;

[0085] The charging phase of the vehicle is allocated according to the remaining power of the vehicle when the vehicle is connected to the charging port;

[0086] Through the shared charging station, the remaining power of the vehicle is obtained when the user connects the vehicle to the charging port;

[0087] According to the remaining power of the vehicle, the time required for the vehicle to be charged at the first-level power to the target power set by the user is obtained, which is recorded as the target time;

[0088] The power range of the first-level power is [0w, 200w];

[0089] The target power level set by the user is that when the vehicle is charged to the target power level, the switch power supply turns off the charging power source and the vehicle stops charging;

[0090] Through the shared charging station, the time when the user connects the vehicle to the charging interface is obtained, which is recorded as the first time, and the time when the user sets to take out the vehicle is obtained, which is recorded as the second time;

[0091] According to the first moment and the second moment, the time interval between the two moments is obtained and recorded as the actual time;

[0092] Setting a power allocation strategy, which is divided into a first power allocation strategy and a second power allocation strategy;

[0093] If the actual time is greater than the target time, a first power allocation strategy is executed on the vehicle;

[0094] If the actual time is less than the target time, a second power allocation strategy is executed for the vehicle;

[0095] Optionally, the power information of the charging interface and the charging charge information are divided into the power of the charging interface and the corresponding charge, including:

[0096] Obtain the charging interface power information and divide the charging interface power in the shared charging station, specifically:

[0097] Level 1 power, power range is [0w, 200w];

[0098] Second level power, power range is [200w, 300w];

[0099] Three levels of power, power range is [300w, 500w];

[0100] During the charging process, charging is performed according to the maximum value of each power range;

[0101] In a unit of time, the charging charges corresponding to each level of power are different;

[0102] According to the divided charging interface power, the standard rate is set as follows:

[0103] The standard rate for level 1 power is set to Q, the standard rate for level 2 power is set to W, and the standard rate for level 3 power is set to E;

[0104] The standard rate is the fee charged for each kilowatt-hour that the vehicle is charged, in units of RMB per kilowatt-hour.

[0105] Furthermore, the setting of the charging stage of the vehicle during the charging process is divided into a first stage and a second stage, including:

[0106] The first stage is that after the vehicle is connected to the charging port, it is charged by the switching power supply according to the recommended charging port power. When the vehicle power reaches 90%, this time is recorded as the end time of the first stage;

[0107] According to the charging interface power, the target charging cost and corresponding charging time of the vehicle in the first stage are obtained;

[0108] The second stage is that when the current power of the vehicle is 90%, if the current power is less than the target power set by the user, the charging power is adjusted by the switching power supply to charge until the vehicle power reaches the target power;

[0109] Optionally, obtaining the target charging cost and the corresponding charging time of the vehicle in the first stage includes:

[0110] Calculate the charging costs of the vehicle during the first stage of charging at power levels 1 to 3 respectively;

[0111] Charging fee calculation formula: Charging fee = charging power (unit: kilowatt-hour / hour, kWh / h) × charging time (unit: hour, h) × standard rate corresponding to the power level (unit: yuan / kilowatt-hour, yuan / kWh);

[0112] According to the charging cost calculation formula, the charging cost corresponding to each level of power is calculated respectively, and recorded as the first cost, the second cost and the third cost respectively;

[0113] Arrange the first fee, the second fee and the third fee in ascending order to form a fee sorting sequence;

[0114] And select the charging cost that ranks first in the cost ranking and record it as the target charging cost;

[0115] The charging time corresponding to the target charging cost is obtained and recorded as the first time.

[0116] Furthermore, the allocating the charging stages of the vehicle according to the remaining power of the vehicle includes:

[0117] If the vehicle's remaining power does not reach 90%, the vehicle is set to charge in the first and second stages;

[0118] If the remaining power of the vehicle is more than 90% and less than 100%, the vehicle is set to charge in the second stage;

[0119] If the remaining power of the vehicle reaches 100%, the charging power supply is turned off by switching the power supply on and off.

[0120] Optionally, if the actual time is greater than the target time, executing a first power allocation strategy for the vehicle includes:

[0121] If the actual time is greater than the target time, it means that there is enough time to charge to the power set by the user.

[0122] If the charging stage of the vehicle includes the first stage and the second stage, the vehicle is marked as a first-category vehicle;

[0123] The charging stage includes the first stage and the second stage, which means that the target charging amount set by the user exceeds 90%, and the remaining power of the vehicle is less than 90% when it is connected to the charging port;

[0124] Obtaining the time required for the first type of vehicle to charge using the first power in the second stage;

[0125] Obtain the target charging cost and corresponding charging time of the first type of vehicles in the first stage;

[0126] The charging time and the corresponding charging power of the first stage and the charging time and the corresponding charging power of the second stage are set as the power allocation strategy for the first type of vehicles during the charging process;

[0127] If the charging stage of the vehicle only includes the first stage, the vehicle is marked as a second-category vehicle;

[0128] The charging stage only includes the first stage, which means that the target charging amount set by the user is less than 90%, and the remaining power of the vehicle is less than 90% when it is connected to the charging port;

[0129] Obtain the time required for the second type of vehicles to be charged in the first stage;

[0130] The charging time and the corresponding charging power of the first stage are set as the power allocation strategy for the second type of vehicles during the charging process;

[0131] If the charging stage of the vehicle only includes the second stage, the vehicle is marked as a third-category vehicle;

[0132] The charging stage only includes the second stage, which means that the target charging amount set by the user is greater than 90%, and the remaining power of the vehicle is greater than 90% when it is connected to the charging port;

[0133] Obtaining the time required for the third type of vehicle to charge using the first power in the second stage;

[0134] The charging time and corresponding charging power of the second stage are set as the power allocation strategy for the third type of vehicles during the charging process.

[0135] Furthermore, if the actual time is less than the target time, executing a second power allocation strategy for the vehicle includes:

[0136] If the actual time is less than the target time, it means that the charging time is not enough to charge the vehicle to the target power set by the user, that is, when using the first-level power charging state, there is not enough time to charge to the power set by the user;

[0137] If the charging stage of the vehicle includes the first stage and the second stage, the vehicle is marked as a fourth category vehicle;

[0138] Obtain the time required for the fourth category vehicle to be charged to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the first and second stages of the fourth category vehicle.

[0139] If the charging stage of the vehicle only includes the first stage, the vehicle is marked as a fifth category vehicle;

[0140] Obtain the time required for the fifth category vehicle to charge to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the first stage of the fifth category vehicle. If it is shorter than the actual time, obtain the target charging cost and the first time of the fifth category vehicle in the first stage.

[0141] If the first time of the fifth category vehicle is greater than the actual time, the third level power is selected for charging in the first stage of the fifth category vehicle;

[0142] If the first time of the fifth category vehicle is less than the actual time, then in the first stage of the fifth category vehicle, the charging power corresponding to the target charging cost is selected for charging;

[0143] If the vehicle's charging phase only includes the second phase, the vehicle is marked as a Class 6 vehicle;

[0144] Obtain the time required for the sixth category vehicle to charge to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the second stage of the sixth category vehicle. If it is shorter than the actual time, obtain the target charging cost and the first time of the sixth category vehicle in the second stage;

[0145] If the first time of the sixth category vehicle is greater than the actual time, the third level power is selected for charging in the second stage of the sixth category vehicle;

[0146] If the first time of the sixth category vehicle is less than the actual time, then in the second stage of the sixth category vehicle, the charging power corresponding to the target charging cost is selected for charging;

[0147] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0148] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A switching power supply automatic control method, characterized in that: include: Obtaining charging information of a shared charging station, wherein the charging information includes charging interface power information and charging charge information; Multiple charging ports are set up in the shared charging station, and a switching power supply is configured for each charging port; The switching power supply is used to control the charging power and start and stop the charging power supply during the charging process of the vehicle; According to the charging interface power information and charging charge information, the power of the charging interface and the corresponding charge at each power are divided; Set the charging stage of the vehicle during the charging process, which is divided into the first stage and the second stage; The charging phase of the vehicle is allocated according to the remaining power of the vehicle when the vehicle is connected to the charging port; Through the shared charging station, the remaining power of the vehicle is obtained when the user connects the vehicle to the charging port; According to the remaining power of the vehicle, the time required for the vehicle to be charged at the first-level power to the target power set by the user is obtained, which is recorded as the target time; The target power level set by the user is that when the vehicle is charged to the target power level, the switch power supply turns off the charging power source and the vehicle stops charging; Through the shared charging station, the time when the user connects the vehicle to the charging interface is obtained, which is recorded as the first time, and the time when the user sets to take out the vehicle is obtained, which is recorded as the second time; According to the first moment and the second moment, the time interval between the two moments is obtained and recorded as the actual time; Setting a power allocation strategy, which is divided into a first power allocation strategy and a second power allocation strategy; If the actual time is greater than the target time, a first power allocation strategy is executed on the vehicle; If the actual time is less than the target time, the second power distribution strategy is executed for the vehicle.

2. The automatic control method for a switching power supply according to claim 1, characterized in that: The charging interface power information and charging charge information are divided into the power of the charging interface and the corresponding charge, including: Obtain the charging interface power information and divide the charging interface power in the shared charging station, specifically: Level 1 power, power range is [0w, 200w]; Second level power, power range is [200w, 300w]; Three levels of power, power range is [300w, 500w]; During the charging process, charging is performed according to the maximum value of each power range; In a unit of time, the charging charges corresponding to each level of power are different; According to the divided charging interface power, the standard rate is set as follows: The standard rate for level 1 power is set to Q, the standard rate for level 2 power is set to W, and the standard rate for level 3 power is set to E; The standard rate is the fee charged for each kilowatt-hour that the vehicle is charged, in units of RMB per kilowatt-hour.

3. The automatic control method for a switching power supply according to claim 1, characterized in that: The setting of the charging stage of the vehicle during the charging process is divided into the first stage and the second stage, including: The first stage is that after the vehicle is connected to the charging port, it is charged by the switching power supply according to the recommended charging port power. When the vehicle power reaches 90%, this time is recorded as the end time of the first stage; According to the charging interface power, the target charging cost and corresponding charging time of the vehicle in the first stage are obtained; The second stage is that when the current power of the vehicle is 90%, if the current power is less than the target power set by the user, the charging power is adjusted by the switching power supply to charge until the vehicle power reaches the target power.

4. The automatic control method for a switching power supply according to claim 3, characterized in that: The obtaining of the target charging cost and the corresponding charging time of the vehicle in the first stage includes: Calculate the charging costs of the vehicle during the first stage of charging at power levels 1 to 3 respectively; Charging fee calculation formula: Charging fee = charging power (unit: kilowatt-hour / hour, kWh / h) × charging time (unit: hour, h) × standard rate corresponding to the power level (unit: yuan / kilowatt-hour, yuan / kWh); According to the charging cost calculation formula, the charging cost corresponding to each level of power is calculated respectively, and recorded as the first cost, the second cost and the third cost respectively; Arrange the first fee, the second fee and the third fee in ascending order to form a fee sorting sequence; And select the charging cost that ranks first in the cost ranking and record it as the target charging cost; The charging time corresponding to the target charging cost is obtained and recorded as the first time.

5. The automatic control method for a switching power supply according to claim 1, characterized in that: The allocating the charging stages of the vehicle according to the remaining power of the vehicle includes: If the vehicle's remaining power does not reach 90%, the vehicle is set to charge in the first and second stages; If the remaining power of the vehicle is more than 90% and less than 100%, the vehicle is set to charge in the second stage; If the remaining power of the vehicle reaches 100%, the charging power supply is turned off by switching the power supply on and off.

6. The automatic control method for a switching power supply according to claim 1, characterized in that: If the actual time is greater than the target time, a first power allocation strategy is executed on the vehicle, including: If the charging stage of the vehicle includes the first stage and the second stage, the vehicle is marked as a first-category vehicle; Obtaining the time required for the first type of vehicle to charge using the first power in the second stage; Obtain the target charging cost and corresponding charging time of the first type of vehicles in the first stage; The charging time and the corresponding charging power of the first stage and the charging time and the corresponding charging power of the second stage are set as the power allocation strategy for the first type of vehicles during the charging process; If the charging stage of the vehicle only includes the first stage, the vehicle is marked as a second-category vehicle; Obtain the time required for the second type of vehicles to be charged in the first stage; The charging time and the corresponding charging power of the first stage are set as the power allocation strategy for the second type of vehicles during the charging process; If the charging stage of the vehicle only includes the second stage, the vehicle is marked as a third-category vehicle; Obtaining the time required for the third type of vehicle to charge using the first power in the second stage; The charging time and corresponding charging power of the second stage are set as the power allocation strategy for the third type of vehicles during the charging process.

7. The automatic control method for a switching power supply according to claim 1, characterized in that: If the actual time is less than the target time, a second power allocation strategy is executed on the vehicle, including: If the charging stage of the vehicle includes the first stage and the second stage, the vehicle is marked as a fourth category vehicle; Obtain the time required for the fourth category vehicle to be charged to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the first and second stages of the fourth category vehicle. If the charging stage of the vehicle only includes the first stage, the vehicle is marked as a fifth category vehicle; Obtain the time required for the fifth category vehicle to charge to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the first stage of the fifth category vehicle. If it is shorter than the actual time, obtain the target charging cost and the first time of the fifth category vehicle in the first stage. If the first time of the fifth category vehicle is greater than the actual time, the third level power is selected for charging in the first stage of the fifth category vehicle; If the first time of the fifth category vehicle is less than the actual time, then in the first stage of the fifth category vehicle, the charging power corresponding to the target charging cost is selected for charging; If the vehicle's charging phase only includes the second phase, the vehicle is marked as a Class 6 vehicle; Obtain the time required for the sixth category vehicle to charge to the target power using the third level power. If it is longer than the actual time, the third level power is selected for charging in the second stage of the sixth category vehicle. If it is shorter than the actual time, obtain the target charging cost and the first time of the sixth category vehicle in the second stage; If the first time of the sixth category vehicle is greater than the actual time, the third level power is selected for charging in the second stage of the sixth category vehicle; If the first time of the sixth category vehicle is less than the actual time, then in the second stage of the sixth category vehicle, the charging power corresponding to the target charging fee is selected for charging.

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