WO2015018270A1

WO2015018270A1 - Charging control method, in-car system of electric car, and charging control system

Info

Publication number: WO2015018270A1
Application number: PCT/CN2014/082381
Authority: WO
Inventors: 李军华
Original assignee: 奇瑞汽车股份有限公司; 芜湖普威技研有限公司
Priority date: 2013-08-06
Filing date: 2014-07-17
Publication date: 2015-02-12
Also published as: CN103441558A; CN103441558B

Abstract

The present invention relates to the field of electric cars, and provides a charging control method, an in-car system of an electric car, and a charging control system. The method comprises: receiving a charging control instruction, the charging control instruction comprising a charging stopping control instruction, an instruction that charging is performed at preset power, or a discharging instruction; determining, according to a preset charging/discharging condition, whether it is allowed to perform the charging control instruction; when the charging control instruction comprises the charging stopping control instruction and the charging/discharging condition indicates that it is allowed to stop charging, controlling a charging/discharging motor of the electric car to stop charging an in-car power source of the electric car; when the charging control instruction comprises the instruction that charging is performed at preset power and the charging/discharging condition indicates that it is allowed to charge at preset power, controlling the charging/discharging motor of the electric car to charge the in-car power source of the electric car at the preset power; and when the charging control instruction comprises the discharging instruction and the charging/discharging condition indicates that it is allowed to discharge, controlling the charging/discharging motor to discharge to a power grid. Therefore, the electric car can be intelligently charged.

Description

Charging control method, electric vehicle vehicle terminal and charging control system

This application claims priority from Chinese Patent Application No. 201310340024.7, entitled "Charge Control Method, Electric Vehicle Vehicle Terminal and Charging Control System" on August 6, 2013, the entire contents of which are hereby incorporated by reference. Combined in this application. Technical field

The present invention relates to the field of electric vehicles, and in particular, to a charging control method, an electric vehicle vehicle terminal, and a charging control system. Background technique

An electric vehicle is a vehicle that uses a vehicle power supply to power a motor to drive the wheels to rotate.

The biggest difference between electric vehicles and ordinary cars is that they use electric power and motors instead of gasoline and engines to save energy and protect the environment. At the same time, when the power of the vehicle power supply is low, it only needs to be charged in the parking lot with the charging device. It is more convenient and faster, and the cost is lower than when the ordinary car has no oil.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems: The charging time of electric vehicles is concentrated after work, and the simultaneous charging of large-scale electric vehicles brings great pressure to the power grid. Summary of the invention

In order to solve the problem that the large-scale electric vehicle charging in the prior art brings great pressure to the power grid, the embodiment of the invention provides a charging control method, an electric vehicle vehicle terminal and a charging control system. The technical solution is as follows:

In one aspect, an embodiment of the present invention provides a charging control method, the method comprising: receiving a charging control instruction, where the charging control instruction includes stopping a charging control instruction, pressing a preset power charging instruction or a discharging instruction, and the charging control The command is generated according to a grid load condition; when the charge control command includes a stop charge control command, and the charge and discharge condition indicates that the stop is allowed When the charging control command includes a preset power charging command, and the charging and discharging condition indicates that charging by the vehicle power source is allowed;

When the charge control command includes a discharge command, and the charge and discharge condition indicates that discharge is permitted, the charge and discharge device is controlled to discharge to the power grid.

In an implementation manner of the embodiment of the present invention, when the charging control instruction includes a discharging instruction, and the charging and discharging condition includes whether the discharging is allowed or the minimum battery level, the determining whether to permit execution is performed according to the set charging and discharging condition. The charging control instruction includes:

Determining a quantity of the vehicle power source when the charging and discharging condition is allowing discharge;

If the amount of power of the onboard power source is greater than the minimum amount of power of the battery, the discharging command is allowed to be executed.

In another implementation manner of the embodiment of the present invention, the charging control instruction further includes a discharge power, and the controlling the charging and discharging machine to discharge to the power grid includes:

Determining a maximum power that the onboard power supply is allowed to discharge, and controlling the charge and discharge machine to discharge the grid to a smaller one of the maximum power allowed to discharge and the discharge power.

In another implementation manner of the embodiment of the present invention, when the charging control instruction includes a preset power charging instruction, and the charging and discharging condition includes: an expected power value and a leaving time, the method further includes:

Calculating an estimated power amount of the vehicle power source when the vehicle power source is charged to the leaving time according to a preset power;

If the predicted power is greater than the expected power value, the predetermined power charging command is allowed to be executed.

In another aspect, the embodiment of the present invention further provides a charging control method, where the method includes: acquiring a grid load condition;

Generating a charging control command according to the grid load condition, the charging control command includes stopping a charging control command, pressing a preset power charging command or a discharging command;

Sending the charging control command.

In another aspect, an embodiment of the present invention further provides an electric vehicle vehicle terminal, the terminal comprising: a receiving module, configured to receive a charging control instruction, where the charging control instruction includes stopping a charging control instruction, and pressing a preset power charging instruction. Or a discharge command, the charge control command is based on a grid load Generated

Judgment module, control instruction;

a control module, configured to: when the charging control instruction includes stopping the charging control instruction, and charging the charging and discharging bar to the vehicle power source;

When the charging control command includes a preset power charging command, and the charging and discharging condition indicates that charging by the vehicle power source is allowed;

In an implementation manner of the embodiment of the present invention, when the charging control instruction includes a discharging instruction, and the charging and discharging condition includes whether the discharging is allowed or the minimum battery level, the determining module is configured to: when the charging and discharging condition is To allow discharge, determine the amount of power of the vehicle power source;

In another implementation manner of the embodiment of the present invention, the charging control instruction further includes a discharge power, and the control module is configured to determine, when the power of the vehicle power source is greater than the minimum power, The maximum power discharged is controlled to discharge the charge and discharge machine to the grid using a smaller one of the maximum power allowed to discharge and the discharge power.

In another implementation manner of the embodiment of the present invention, when the charging control instruction includes a preset power charging instruction, the charging and discharging condition includes: when the expected power value and the leaving time, the determining module is configured to:

On the other hand, an embodiment of the present invention further provides a charging control system, where the system includes: an acquiring module, configured to acquire a load condition of a power grid;

a generating module, configured to generate a charging control instruction according to the grid load condition, where the charging control instruction includes stopping a charging control instruction, pressing a preset power charging instruction or a discharging instruction; And a sending module, configured to send the charging control instruction generated by the generating module.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

By receiving an instruction sent by the charging control system during charging of the electric vehicle, when the instruction includes stopping charging, the charging and discharging machine controlling the electric vehicle stops charging the electric vehicle power supply of the electric vehicle; The grid has brought tremendous pressure to achieve smart charging. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a flowchart of a charging control method according to Embodiment 1 of the present invention;

2 is a flowchart of a charging control method according to Embodiment 2 of the present invention;

3 is a flowchart of a charging control method according to Embodiment 3 of the present invention;

4 is a schematic structural view of an electric vehicle vehicle terminal provided by Embodiment 4 of the present invention;

5 is a schematic structural diagram of an electric vehicle vehicle terminal provided in Embodiment 5 of the present invention;

FIG. 6 is a schematic structural diagram of a charging control system according to Embodiment 6 of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

An embodiment of the present invention provides a charging control method. Referring to FIG. 1, the method includes: Step 101: An electric vehicle vehicle terminal receives a charging control instruction, where the charging control instruction includes stopping a charging control command, a discharging command, or pressing a preset power charging control. The command, charge control command is generated based on the grid load condition.

Step 102: Determine whether the charging control command is allowed to be executed according to the set charging and discharging condition.

Step 103: When the charging control command includes stopping the charging control command, and the charging and discharging condition indicates that charging is allowed to stop, controlling the charging and discharging machine of the electric vehicle to stop charging the vehicle power source of the electric vehicle; when the charging control command includes charging the command according to the preset power And the charge and discharge condition indicates that the charging and discharging machine for controlling the electric vehicle is charged to the vehicle power supply of the electric vehicle according to the preset power when the charging is allowed to be performed according to the preset power. Electricity;

When the charge control command includes a discharge command, and the charge and discharge condition indicates that discharge is permitted, the charge and discharge motor is controlled to discharge to the grid.

In the embodiment of the present invention, during the charging process of the electric vehicle, the command sent by the receiving charging control system includes stopping the charging control command, and the charging and discharging condition indicates that the charging and discharging machine of the electric vehicle is stopped to stop charging the vehicle electric power of the electric vehicle. When the charging control command includes the charging command according to the preset power, and the charging and discharging condition indicates that the charging is allowed to be performed according to the preset power, the charging and discharging machine controlling the electric vehicle is charged to the vehicle power source of the electric vehicle according to the preset power; when the charging control instruction includes The discharge command, and the charge and discharge condition indicates that the discharge and discharge machine is controlled to discharge to the grid when the discharge is allowed; the charging of the electric vehicle at the peak of the electric power is reduced to bring great pressure to the power grid, and the smart charging is realized. Embodiment 2

The embodiment of the present invention provides a charging control method. Referring to FIG. 2, the method includes: Step 201: The electric vehicle vehicle terminal receives a charging control instruction, and the charging control instruction includes stopping the charging control instruction, discharging the command, or pressing the preset power charging control. The command, charge control command is generated based on the grid load condition.

Specifically, the electric vehicle vehicle terminal can receive the charging control command through a General Packet Radio Service ("GPRS").

The charging control command can be generated according to the following manner: When the charging control system detects that the grid load is large (for example, exceeds the set threshold), a preset power charging control command or a stop charging control command can be generated to limit the electric vehicle pressing Preset power charging or control the electric car to stop charging. After a period of time, if the charging is stopped and the grid power demand cannot be met (for example, the load is still large), a discharge command can be generated to request the electric vehicle to discharge to the grid.

For another example, the charging control command may also be generated according to the following manner: dividing the grid load into multiple levels, and generating a discharge command when the current level indicates a high load (above the set first threshold); when the current level indicates medium When the load (between the first threshold and the set second threshold, the first threshold is greater than the second threshold), a stop charging control command is generated; when the current level indicates a low load (below the second threshold) ), generates a charge control command by default power.

It is easy to know that before step 201, the electric vehicle vehicle terminal needs to be connected to the electric vehicle power source. Step 202: Determine whether the charging control command is allowed to be executed according to the set charging and discharging condition. Specifically, the step 202 may include:

Step 1: Obtain the charge and discharge conditions set by the user.

In a specific implementation, the user can set the charge and discharge mode to set the charge and discharge conditions. In other words, the charge/discharge mode set by the user can be obtained first, and then the charge/discharge conditions corresponding to the charge and discharge mode can be found based on the correspondence between the charge and discharge mode and the charge and discharge conditions. For example, the charging and discharging mode and charging and discharging conditions can be as follows: Normal mode, charging is allowed, discharge is not allowed; Economic mode, charging time is controlled according to electricity price information, discharge is not allowed; Remote mode, allowing discharge. Of course, users can also design custom modes by setting other conditions.

Specifically, in the normal mode, as long as the vehicle power source is connected to the grid, charging starts, and when it is full, it stops. However, charging will also stop when the charger or the charger malfunctions or the battery fails.

In the economic mode, charging is usually performed when the electricity price is low, such as starting charging at 11:00 in the evening and stopping after filling. Users can also modify the charging time based on local electricity price information.

In the remote mode and the custom mode, the electric vehicle vehicle terminal receives the charging control command, and determines whether the charging control command can be executed according to the charging and discharging conditions set by the current user. The charge and discharge condition is for indicating whether or not the execution of the charge control command is permitted, and the charge and discharge condition may include, in addition to a direct condition for directly indicating whether the charge control command is allowed to be executed, an indirect for indirectly indicating whether the charge control command is allowed to be executed. condition.

Direct conditions include whether to allow charging to stop, whether to allow charging at a preset power, and whether to allow discharging. Indirect conditions may include the minimum battery charge and the desired charge value.

In addition, in the custom mode, the user can also set the charging and discharging conditions such as the departure time and the expected power value. The electric vehicle vehicle terminal will judge whether the maximum power can be charged to the departure time set by the user, and whether the desired power value can be achieved. , prompts the user to set the settings unreasonable.

Step 2: Determine whether the charging control command is allowed to be executed according to the obtained charging and discharging conditions. In the judgment, it is first judged whether the direct condition allows the execution of the charging control command. When the direct condition allows the execution of the charge control command and the charge and discharge condition also includes an indirect condition, it is judged whether the indirect condition allows the execution of the charge control command.

Specifically, when the charging control command includes stopping the charging control command, if the charging and discharging condition is to allow the charging to be stopped, step 203 is performed.

When the charging control command includes the preset power charging command, if the charging and discharging condition is to allow charging according to the preset power, step 204 is performed. If the charge and discharge conditions include: Allow charging at the preset power, expected power value, and departure time, follow these steps:

Step 1: Calculate the estimated power of the vehicle power supply when the vehicle power source is charged to the departure time according to the preset power;

Step 2: If the expected power is greater than the expected power value, step 204 is performed.

When the charge control command includes the discharge control command, if the charge and discharge condition is allowable discharge, step 205 is performed. If the charge and discharge conditions include: Allow discharge and minimum battery charge, follow the steps below: Step 1: Determine if the user is allowed to discharge.

Step 2: When the user allows the discharge, determine the power of the vehicle power supply.

Among them, determining the amount of vehicle power supply can be obtained by a battery controller connected to the vehicle power source. Step 3: If the power of the vehicle power source is greater than the minimum battery power, go to step 205.

It is worth noting that after controlling the charging and discharging machine to discharge to the grid for a certain period of time, the power of the vehicle power supply reaches the minimum amount of electricity and stops discharging.

If the charge and discharge conditions include: Allow discharge, departure time, and expected charge value, follow these steps:

Step 1: Determine whether the current power value of the vehicle power supply is greater than the expected power value.

Step 2: When the current battery power value is greater than the expected power value, go to step 205. Further, after the second step, the maximum discharge power can be calculated according to the departure time. When the step 205 is performed, the discharge power is not greater than the maximum discharge power, so as to ensure that the vehicle power supply value at the departure time is not less than the expected power value.

Step 203: When the charging control command includes stopping the charging control command, and the charging/discharging condition indicates that the charging is stopped, the charging and discharging machine that controls the electric vehicle stops charging the vehicle-mounted power source of the electric vehicle.

Step 204: When the charging control command includes a preset power charging command, and the charging and discharging condition indicates that the power source is charged.

Step 205: When the charging control command includes a discharging command, and the charging and discharging condition indicates that the discharging is allowed, the charging and discharging device is controlled to discharge to the power grid.

Further, the charging control command further includes discharging power to control the charging and discharging machine to discharge to the grid, and includes:

Determine the maximum power that the vehicle power supply is allowed to discharge, and control the charging and discharging machine to discharge to the grid with the smaller of the maximum power and discharge power allowed to be discharged. In the embodiment of the present invention, during the charging process of the electric vehicle, the command sent by the receiving charging control system includes stopping the charging control command, and the charging and discharging condition indicates that the charging and discharging machine of the electric vehicle is stopped to stop charging the vehicle electric power of the electric vehicle. When the charging control command includes the charging command according to the preset power, and the charging and discharging condition indicates that the charging is allowed to be performed according to the preset power, the charging and discharging machine controlling the electric vehicle is charged to the vehicle power source of the electric vehicle according to the preset power; when the charging control instruction includes The discharge command, and the charge and discharge condition indicates that the discharge and discharge machine is controlled to discharge to the grid when the discharge is allowed; the charging of the electric vehicle at the peak of the electric power is reduced to bring great pressure to the power grid, and the smart charging is realized. Embodiment 3

An embodiment of the present invention provides a charging control method. Referring to FIG. 3, the method includes: Step 301: A charging control system acquires a grid load condition.

Step 302: Generate a charging control instruction according to a grid load condition, where the charging control instruction includes stopping a charging control instruction, a discharging instruction, or pressing a preset power charging control instruction.

For example, the charging control system may generate a charging control command according to the following manner: When the charging control system detects that the grid load is large (for example, exceeds a set threshold), a preset power charging control command or a stop charging control command may be generated. To limit the electric vehicle to charge at a preset power or to control the electric vehicle to stop charging. After a period of time, if the charging is stopped and the grid power demand cannot be met (for example, the load is still large), a discharge command can be generated to request the electric vehicle to discharge to the grid. When the grid load returns to normal, the normal charging process is resumed.

For another example, the charging control system may further generate a charging control command according to the following manner: dividing the grid load into a plurality of levels, and generating a discharge command when the current level indicates a high load (above the set first threshold); The level indicates a medium load (between the first threshold and the set second threshold, and the first threshold is greater than the second threshold), generating a stop charging control command; when the current level indicates a low load (below the first Two thresholds), generating a charging control command according to a preset power.

Step 303: Send a charging control command.

Specifically, the charging control command can be transmitted via GPRS.

According to the embodiment of the present invention, the charging control command is sent to the vehicle-mounted terminal of the electric vehicle according to the load condition of the power grid, so that the vehicle-mounted terminal of the electric vehicle controls the charging and discharging machine of the electric vehicle to stop charging the vehicle power source of the electric vehicle according to the charging control command, and presses the preset. Power charging or discharging to the grid reduces the pressure on the power grid to charge the power grid, and realizes smart charging. Embodiment 4

An embodiment of the present invention provides an electric vehicle vehicle terminal. Referring to FIG. 4, the terminal includes: a receiving module 401, configured to receive a charging control instruction, where the charging control instruction includes stopping a charging control instruction, a discharging instruction, or a preset power charging control. The command, the charging control command is generated according to the grid load condition; the command; ' : , , : , the control module 403 is configured to control the electric vehicle when the charging control command includes stopping the charging control command, and the charging and discharging condition indicates that the charging is allowed to stop. The charging and discharging machine stops charging the vehicle power supply of the electric vehicle;

When the charging control command includes the charging command according to the preset power, and the charging and discharging condition indicates that the charging is allowed to be performed according to the preset power, the charging and discharging machine controlling the electric vehicle is charged to the vehicle power source of the electric vehicle according to the preset power;

In the embodiment of the present invention, during the charging process of the electric vehicle, the command sent by the receiving charging control system includes stopping the charging control command, and the charging and discharging condition indicates that the charging and discharging machine of the electric vehicle is stopped to stop charging the vehicle electric power of the electric vehicle. When the charging control command includes the charging command according to the preset power, and the charging and discharging condition indicates that the charging is allowed to be performed according to the preset power, the charging and discharging machine controlling the electric vehicle is charged to the vehicle power source of the electric vehicle according to the preset power; when the charging control instruction includes The discharge command, and the charge and discharge condition indicates that the discharge and discharge machine is controlled to discharge to the grid when the discharge is allowed; the charging of the electric vehicle at the peak of the electric power is reduced to bring great pressure to the power grid, and the smart charging is realized. Embodiment 5

The embodiment of the present invention provides an electric vehicle vehicle terminal. Referring to FIG. 5, the terminal includes: a receiving module 501, a determining module 502, and a control module 503;

The receiving module 501 is configured to receive a charging control command sent by the charging control system, where the charging control command includes stopping the charging control command, the discharging command, or pressing the preset power charging control command, and the charging control command is generated according to a grid load condition. Specifically, the receiving module 501 includes a GPRS communication unit for communicating with the charging control system to receive the charging control command.

For another example, the charging control command may also be generated according to the following manner: dividing the grid load into multiple levels, and generating a discharge command when the current level indicates a high load (above the set first threshold); when the current level indicates medium When the load (between the first threshold and the set second threshold, the first threshold is greater than the second threshold), a stop charging control command is generated; when the current level indicates a low load (below the second threshold) ), generates a charge control command by default power. make. ' : , , , : ,

The control module 503 is configured to: when the charging control command includes stopping the charging control command, and the charging and discharging condition indicates that the charging is allowed to stop, controlling the charging and discharging machine of the electric vehicle to stop charging the vehicle power source of the electric vehicle;

The control module 503 is electrically connected to the battery controller and the charging and discharging device through the CAN bus to determine the power of the vehicle power source and control the charging or discharging of the charging and discharging machine.

Specifically, the determining module 502 can include:

The obtaining unit 5021 is configured to acquire a charging and discharging condition set by a user.

In a specific implementation, the user can set the charge and discharge mode to set the charge and discharge conditions. In other words, the charge/discharge mode set by the user can be acquired first, and then the charge/discharge conditions corresponding to the charge and discharge mode can be found based on the correspondence relationship between the charge and discharge mode and the charge and discharge conditions. For example, the charge and discharge mode and the charge and discharge conditions can be as follows: Normal mode, charging is allowed, discharge is not allowed; Economic mode, charging time is controlled according to electricity price information, discharge is not allowed; Remote mode, discharge is allowed. Of course, users can also pass Set other conditions to design a custom mode.

Direct conditions include allowing to stop charging, whether to allow charging at a preset power, and whether to allow discharging. Indirect conditions may include the minimum battery charge and the desired charge value.

The determining unit 5022 is configured to determine whether to permit execution of the charging control instruction according to the obtained charging and discharging condition.

In the judgment, the judging unit first judges whether the direct condition allows execution of the charging control command. When the direct condition allows the execution of the charge control command, and the charge and discharge condition also includes an indirect condition, it is judged whether the indirect condition allows the execution of the charge control command.

Specifically, when the charging control command includes the stop charging control command, if the determining unit 5022 determines that the charging and discharging condition is to allow the charging to stop, the control module 503 controls the charging and discharging machine of the electric vehicle to stop charging the vehicle power source of the electric vehicle.

When the charging control command includes the preset power charging command, if the determining unit 5022 determines that the charging and discharging condition is to allow charging according to the preset power, the control module 503 is configured to control the charging and discharging machine of the electric vehicle to the electric vehicle according to the preset power. The car power is charged. If the charging and discharging conditions include: allowing the charging according to the preset power, the expected power value, and the leaving time, the determining unit 5022 calculates the estimated power of the vehicle power source when the vehicle power is charged to the leaving time according to the preset power; if the determining unit 5022 determines the prediction The control module 503 is configured to control the charging and discharging machine of the electric vehicle to charge the vehicle power source of the electric vehicle according to a preset power.

When the charging control command includes a discharging control command, if the determining unit 5022 determines the charging and discharging condition To allow discharge, the control module 503 is configured to control the charging and discharging machine to discharge to the grid. If the charging and discharging conditions include: allowing the discharging and the minimum battery power, the determining unit 5022 determines the power of the vehicle power source; if the power of the vehicle power source is greater than the minimum battery power, the control module 503 is configured to control the charging and discharging machine to discharge to the power grid. If the charging and discharging conditions include: the allowable discharge, the departure time, and the expected power value, the determining unit 5022 determines whether the current power value of the vehicle power source is greater than the expected power value; if the current vehicle power value is greater than the expected power value, the control module 503, It is used to control the charging and discharging machine to discharge to the grid.

Further, after determining that the current power value of the vehicle power source is greater than the expected power value, the determining unit 5022 may further calculate the maximum discharge power according to the departure time, and when the control module 503 controls the charging and discharging machine to discharge to the grid, the discharging power is not greater than the maximum The power is discharged to ensure that the vehicle power supply value at the time of leaving is not less than the expected power value.

Among them, determining the amount of vehicle power supply can be obtained by a battery controller connected to the vehicle power source. Further, the charging control command further includes a discharging power, and the control module 503 is configured to: determine a maximum power that the vehicle power source is allowed to discharge, and control the charging and discharging machine to discharge the smaller one of the maximum power and the discharging power that is allowed to be discharged to the power grid.

In the embodiment of the present invention, during the charging process of the electric vehicle, the command sent by the receiving charging control system includes stopping the charging control command, and the charging and discharging condition indicates that the charging and discharging machine of the electric vehicle is stopped to stop charging the vehicle electric power of the electric vehicle. When the charging control command includes the charging command according to the preset power, and the charging and discharging condition indicates that the charging is allowed to be performed according to the preset power, the charging and discharging machine controlling the electric vehicle is charged to the vehicle power source of the electric vehicle according to the preset power; when the charging control instruction includes The discharge command, and the charge and discharge condition indicates that the discharge and discharge machine is controlled to discharge to the grid when the discharge is allowed; the charging of the electric vehicle at the peak of the electric power is reduced to bring great pressure to the power grid, and the smart charging is realized. Embodiment 6

The embodiment of the present invention provides a charging control system. Referring to FIG. 6, the system includes: an obtaining module 601, configured to acquire a grid load condition.

The generating module 602 is configured to generate a charging control instruction according to a grid load condition, where the charging control instruction includes stopping the charging control instruction, the discharging instruction, or pressing the preset power charging control instruction.

For example, the charging control system may generate a charging control command according to the following manner: When the charging control system detects that the grid load is large (for example, exceeds a set threshold), a preset power charging control command or a stop charging control command may be generated. To limit the electric vehicle to charge or control the electric motor according to the preset power The car stops charging. After a period of time, if the charging is stopped and the grid power demand cannot be met (for example, the load is still large), a discharge command can be generated to request the electric vehicle to discharge to the grid. When the grid load returns to normal, the normal charging process is resumed.

The sending module 603 is configured to send a charging control command generated by the generating module. Specifically, the transmitting module 603 includes a GPRS communication unit for communicating with the in-vehicle terminal.

According to the embodiment of the present invention, the charging control command is sent to the vehicle-mounted terminal of the electric vehicle according to the load condition of the power grid, so that the vehicle-mounted terminal of the electric vehicle controls the charging and discharging machine of the electric vehicle to stop charging the vehicle power source of the electric vehicle according to the charging control command, and presses the preset. Power charging or discharging to the grid reduces the pressure on the power grid to charge the power grid, and realizes smart charging. The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A charging control method, characterized in that the method includes:

Receive a charging control instruction, the charging control instruction includes a stop charging control instruction, a preset power charging instruction or a discharging instruction, the charging control instruction is generated according to the grid load condition; when the charging control instruction includes a stopping charging control instruction, and The charging and discharging conditions indicate that stopping is allowed when the charging control instruction includes a charging instruction with a preset power, and the charging and discharging conditions indicate that charging by the vehicle power supply is allowed;

When the charging control instruction includes a discharging instruction, and the charging and discharging conditions indicate that discharging is allowed, the charging and discharging machine is controlled to discharge to the power grid.

2. The method according to claim 1, characterized in that, when the charging control instruction includes a discharging instruction, and the charging and discharging conditions include whether discharging is allowed and the minimum battery capacity, the judgment is based on the set charging and discharging conditions. Whether to allow execution of the charging control instructions includes:

When the charging and discharging condition is to allow discharge, determine the power of the vehicle power supply;

If the power of the vehicle power supply is greater than the minimum power of the battery, the discharge instruction is allowed to be executed.

3. The method according to claim 2, characterized in that the charging control instruction also includes discharging power, and the controlling the charging and discharging machine to discharge to the power grid includes:

Determine the maximum power allowed to be discharged by the vehicle power supply, and control the charging and discharging machine to use the smaller of the maximum power allowed to be discharged and the discharge power to discharge to the power grid.

4. The method according to claim 2, characterized in that when the charging control instruction includes a charging instruction at a preset power, and the charging and discharging conditions include: an expected power value and a departure time, the method further includes:

Calculate the estimated power of the vehicle power supply when the vehicle power supply is charged at the preset power to the departure time;

If the expected electric power is greater than the expected electric power value, the charging instruction with preset power is allowed to be executed.

5. A charging control method, characterized in that the method includes:

Obtain the grid load status; Generate charging control instructions according to the grid load condition, the charging control instructions include stopping charging control instructions, charging instructions at preset power, or discharging instructions;

Send the charging control command.

6. An electric vehicle on-board terminal, characterized in that the terminal includes:

Receiving module, used to receive charging control instructions. The charging control instructions include stop charging control instructions, charging instructions according to preset power or discharging instructions. The charging control instructions are generated according to the load condition of the power grid; Order; ': , , : ,

A control module configured to charge the vehicle power supply when the charging control instruction includes a stop charging control instruction and the charging and discharging bar is used;

When the charging control instruction includes a charging instruction according to the preset power, and the charging and discharging conditions indicate that charging according to the vehicle power supply is allowed;

7. The terminal according to claim 6, characterized in that when the charging control instruction includes a discharge instruction, and the charging and discharging conditions include whether discharge is allowed and the minimum battery power, the judgment module is used to:

8. The terminal according to claim 7, wherein the charging control instruction further includes discharge power, and the control module is configured to determine the vehicle-mounted power supply when the power of the vehicle-mounted power supply is greater than the minimum power. The maximum power allowed to be discharged by the power supply is used to control the charging and discharging machine to use the smaller of the maximum power allowed to be discharged and the discharge power to discharge to the power grid.

9. The terminal according to claim 7, characterized in that, when the charging control instruction includes a charging instruction according to a preset power, and the charging and discharging conditions include: an expected power value and a departure time, the judgment module is used to :

Calculate the estimated power of the vehicle power supply when the vehicle power supply is charged with a preset power until the departure time; If the expected electric power is greater than the expected electric power value, the charging instruction with preset power is allowed to be executed.

10. A charging control system, characterized in that the system includes:

Acquisition module, used to obtain the grid load status;

A generation module configured to generate charging control instructions according to the power grid load condition. The charging control instructions include stop charging control instructions, charging instructions at preset power, or discharging instructions;

A sending module, configured to send the charging control instructions generated by the generating module.