阅读说明：本技术 一种控制方法、装置和车辆 (Control method and device and vehicle ) 是由 夏范昌 王光宇 任强 于 2020-12-22 设计创作，主要内容包括：本发明实施例提供了一种控制方法、装置和车辆,所述的方法应用于车辆中,所述车辆包括电机控制器的被动放电电路,所述的方法包括：判断所述车辆当前的状态是否满足预设条件；若确定所述车辆当前的状态满足预设条件,则闭合所述被动放电电路。相对现有技术中常闭电机控制器的被动放电电路而言,本发明实施例在满足预设条件时才闭合被动放电电路,缩短了电机控制器的被动放电电路的工作时长,进而能够减少被动放电电路的电量损耗,从而减少电力驱动系统的电量损耗,达到增加车辆续航的目的。(The embodiment of the invention provides a control method, a control device and a vehicle, wherein the method is applied to the vehicle, the vehicle comprises a passive discharge circuit of a motor controller, and the method comprises the following steps: judging whether the current state of the vehicle meets a preset condition or not; and if the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit. Compared with a passive discharge circuit of a normally closed motor controller in the prior art, the embodiment of the invention closes the passive discharge circuit when the preset condition is met, shortens the working time of the passive discharge circuit of the motor controller, and further can reduce the electric quantity loss of the passive discharge circuit, thereby reducing the electric quantity loss of an electric drive system and achieving the purpose of increasing the vehicle endurance.)

1. A control method for use in a vehicle including a passive discharge circuit of a motor controller, the method comprising:

judging whether the current state of the vehicle meets a preset condition or not;

and if the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit.

2. The method of claim 1, wherein the determining whether the current state of the vehicle satisfies a preset condition comprises:

judging whether the vehicle is collided or not;

and if the vehicle is determined to be collided, determining that the current state of the vehicle meets a preset condition.

3. The method of claim 2,

if the fact that the vehicle is not collided is determined, when the rotating speed of a motor of the vehicle is not larger than a preset rotating speed and the gear of the vehicle is a parking gear, it is determined that the current state of the vehicle meets a preset condition.

4. The method of claim 3, further comprising:

and if the vehicle is determined not to be collided, disconnecting the passive discharge circuit when the rotating speed of the motor of the vehicle is greater than the preset rotating speed or the gear of the vehicle is not the parking gear.

5. The method of claim 1, wherein the passive discharge circuit comprises: a first passive discharge circuit and a second passive discharge circuit;

the closing the passive discharge circuit includes:

closing the first passive discharge circuit;

judging whether the high-voltage drop speed of the motor controller is smaller than a preset speed or not;

and if the high-voltage drop speed of the motor controller is determined to be less than the preset speed, closing the second passive discharge circuit.

6. The method of claim 4, wherein the passive discharge circuit comprises: a first passive discharge circuit and a second passive discharge circuit, said opening said passive discharge circuit, comprising:

opening the first passive discharge circuit and/or the second passive discharge circuit.

7. A control device for use in a vehicle including a passive discharge circuit for a motor controller, the device comprising:

the judging module is used for judging whether the current state of the vehicle meets a preset condition or not;

and the closing module is used for closing the passive discharge circuit if the current state of the vehicle is determined to meet the preset condition.

8. The apparatus of claim 7, wherein the determining module comprises:

the collision judgment submodule is used for judging whether the vehicle collides;

and the determining submodule is used for determining that the current state of the vehicle meets a preset condition if the vehicle is determined to be collided.

9. A vehicle comprising a memory, and one or more programs, wherein the one or more programs are stored in the memory, and configured to be executed by the one or more processors comprises instructions for performing the control method of any of method claims 1-6.

10. A readable storage medium, characterized in that the instructions in the storage medium, when executed by a processor of a vehicle, enable the vehicle to carry out the control method according to any one of method claims 1-6.

Technical Field

The invention relates to the technical field of automobiles, in particular to a control method, a control device and a vehicle.

Background

With the development of the electric vehicle industry, the competition of electric vehicles is extremely intense; among them, the endurance of the battery car is one of the key factors influencing the competitiveness of each electric vehicle manufacturer, and increasing the endurance of the electric vehicle also becomes one of the problems being overcome by each manufacturer.

At present, the methods for increasing the endurance of the electric vehicle mainly include two methods: increase power battery capacity and reduce power consumption. Among them, reducing the power loss of the electric drive system is one of the methods for increasing the NEDC (New European Driving Cycle, a method with high industrial acceptance for evaluating the cruising of the electric vehicle).

The motor controller is used as a part of an electric drive system, a passive discharge circuit of the motor controller is made into a normally closed mode in the industry at present, and normal discharge of the whole vehicle can be guaranteed even under extreme working conditions such as collision and the like. However, as the voltage system of the electric vehicle increases, the passive discharge loss increases accordingly, and the influence on the NEDC endurance increases accordingly.

Disclosure of Invention

The embodiment of the invention provides a control method for increasing the vehicle endurance.

The embodiment of the invention also provides a control device and a vehicle, so as to ensure the implementation of the method.

The embodiment of the invention discloses a control method, which is applied to a vehicle, wherein the vehicle comprises a passive discharge circuit of a motor controller, and the method comprises the following steps: judging whether the current state of the vehicle meets a preset condition or not; and if the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit.

Optionally, the determining whether the current state of the vehicle meets a preset condition includes: judging whether the vehicle is collided or not; and if the vehicle is determined to be collided, determining that the current state of the vehicle meets a preset condition.

Optionally, if it is determined that the vehicle is not collided, when the rotation speed of the motor of the vehicle is not greater than a preset rotation speed and the gear of the vehicle is a parking gear, it is determined that the current state of the vehicle meets a preset condition.

Optionally, the method further comprises: if the fact that the vehicle is not collided is determined, when the fact that the rotating speed of a motor of the vehicle is larger than a preset rotating speed is determined, or the gear of the vehicle is not a parking gear is determined, the passive discharging circuit is disconnected.

Optionally, the passive discharge circuit comprises: a first passive discharge circuit and a second passive discharge circuit; the closing the passive discharge circuit includes: closing the first passive discharge circuit; judging whether the high-voltage drop speed of the motor controller is smaller than a preset speed or not; and if the high-voltage drop speed of the motor controller is determined to be less than the preset speed, closing the second passive discharge circuit.

Optionally, the passive discharge circuit comprises: a first passive discharge circuit and a second passive discharge circuit, said opening said passive discharge circuit, comprising: opening the first passive discharge circuit and/or the second passive discharge circuit.

The embodiment of the invention also discloses a control device, which comprises: for use in a vehicle including a passive discharge circuit for a motor controller, the apparatus comprising: the judging module is used for judging whether the current state of the vehicle meets a preset condition or not; and the closing module is used for closing the passive discharge circuit if the current state of the vehicle is determined to meet the preset condition.

Optionally, the determining module includes: the collision judgment submodule is used for judging whether the vehicle collides; and the determining submodule is used for determining that the current state of the vehicle meets a preset condition if the vehicle is determined to be collided.

Optionally, if it is determined that the vehicle is not collided, when the rotation speed of the motor of the vehicle is not greater than a preset rotation speed and the gear of the vehicle is a parking gear, it is determined that the current state of the vehicle meets a preset condition.

Optionally, the apparatus further comprises: and the disconnection module is used for disconnecting the passive discharge circuit when the rotation speed of the motor of the vehicle is determined to be greater than the preset rotation speed or the gear of the vehicle is not a parking gear if the vehicle is determined not to be collided.

Optionally, the passive discharge circuit comprises: a first passive discharge circuit and a second passive discharge circuit; the closing module includes: a first circuit closing submodule for closing the first passive discharge circuit; the speed judgment submodule is used for judging whether the high-voltage reduction speed of the motor controller is smaller than a preset speed or not; and the second circuit closing submodule is used for closing the second passive discharge circuit if the high-voltage drop speed of the motor controller is determined to be smaller than the preset speed.

Optionally, the passive discharge circuit comprises: the first passive discharge circuit and the second passive discharge circuit, and the disconnection module is used for disconnecting the first passive discharge circuit and/or the second passive discharge circuit.

Embodiments of the present invention also provide a vehicle, including a memory, and one or more programs, where the one or more programs are stored in the memory, and configured to be executed by one or more processors includes a control method for performing any of the above methods.

Embodiments of the present invention also provide a readable storage medium, and when instructions in the storage medium are executed by a processor of a vehicle, the vehicle is enabled to execute any one of the control methods described above.

Compared with the prior art, the embodiment of the invention has the following advantages:

in the embodiment of the invention, whether the current state of the vehicle meets the preset condition can be judged; and when the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit of the motor controller. Compared with a passive discharge circuit of a normally closed motor controller in the prior art, the embodiment of the invention closes the passive discharge circuit when the preset condition is met, shortens the working time of the passive discharge circuit of the motor controller, and further can reduce the electric quantity loss of the passive discharge circuit, thereby reducing the electric quantity loss of an electric drive system and achieving the purpose of increasing the vehicle endurance.

Drawings

FIG. 1 is a flow chart of the steps of one control method embodiment of the present invention;

FIG. 2 is a flow chart of the steps of an alternative embodiment of a control method of the present invention;

FIG. 3 is a flow chart of the steps of an alternative embodiment of the control method of the present invention;

FIG. 4 is a block diagram of a control apparatus according to an embodiment of the present invention;

fig. 5 is a block diagram of an alternative embodiment of a control apparatus of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The control method provided by the embodiment of the invention is applied to the vehicle, and the vehicle endurance can be increased.

In the embodiment of the invention, the vehicle can comprise an electric drive system, and the vehicle endurance can be increased by reducing the electric quantity loss of the electric drive system of the vehicle.

In the embodiment of the invention, the electric drive system can comprise a motor controller and a passive discharge circuit of the motor controller, wherein the passive discharge circuit is used for discharging high voltage in the motor controller under the extreme working conditions of vehicle collision and the like so as to ensure the safety of the whole vehicle. Wherein the power consumption of the electric drive system can be reduced by limiting the conditions for closing the passive discharge circuit of the motor controller; that is, when the condition is satisfied, the passive discharge circuit of the motor controller is closed; when the condition is not met, the passive discharge circuit of the motor controller is disconnected, and the working time of the passive discharge circuit is further shortened, so that the electric quantity loss of the electric drive system is reduced, and the purpose of increasing the vehicle endurance is achieved.

Referring to fig. 1, a flow chart of the steps of one control method embodiment of the present invention is shown.

And 102, judging whether the current state of the vehicle meets a preset condition or not.

And step 104, if the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit.

In an embodiment of the present invention, a preset condition for determining whether to close the passive discharge circuit of the motor controller may be preset. The preset conditions can be set on the premise of ensuring the high-voltage discharge safety of the whole vehicle.

In one example, the preset condition may include: the state information meets the preset information; the state information may be used to describe a state of the vehicle, and may include multiple types, such as a type of a collision signal, a motor rotation speed, a vehicle gear, and the like, and different types of state information may correspond to different preset information, and the preset information may be set as required, which is not limited in this embodiment of the present invention.

Then, the current state information of the vehicle can be acquired according to the state information in the preset condition; and then, comparing the current state information of the vehicle with preset information in preset conditions to judge whether the current state of the vehicle meets the preset conditions. When the current state of the vehicle is determined to meet the preset condition, closing a passive discharge circuit of the motor controller; the passive discharge circuit may be opened when it is determined that the current state of the vehicle does not satisfy the preset condition. Compared with a passive discharge circuit of a normally closed motor controller in the prior art, the embodiment of the invention closes the passive discharge circuit when the preset condition is met, shortens the working time of the passive discharge circuit of the motor controller, and further can reduce the electric quantity loss of the passive discharge circuit, thereby reducing the electric quantity loss of an electric drive system and achieving the purpose of increasing the vehicle endurance.

In summary, in the embodiment of the present invention, it may be determined whether the current state of the vehicle meets a preset condition; and when the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit of the motor controller. Compared with a passive discharge circuit of a normally closed motor controller in the prior art, the embodiment of the invention closes the passive discharge circuit when the preset condition is met, shortens the working time of the passive discharge circuit of the motor controller, and further can reduce the electric quantity loss of the passive discharge circuit, thereby reducing the electric quantity loss of an electric drive system and achieving the purpose of increasing the vehicle endurance.

In an optional embodiment of the invention, the passive discharge circuit can be closed when the vehicle is in collision or when the vehicle is not in collision but in a parking state; while in other states the passive discharge circuit may be opened. Correspondingly, the state information in the preset condition may include: the type of collision signal, the motor speed and the vehicle gear; correspondingly, the preset information in the preset condition may include: an abnormality type, a preset rotation speed, and a parking range. The preset condition may include: the type information of the collision signal is an abnormal type, or the type information of the collision signal is a normal type, the rotating speed of the motor is not more than a preset rotating speed, and the vehicle gear is a parking gear.

On the basis of the above-mentioned preset conditions, how to judge whether the current state of the vehicle satisfies the preset conditions will be described.

Referring to fig. 2, a flow chart of the steps of an alternative embodiment of a control method of the present invention is shown.

Step 202, judging whether the vehicle is collided.

In the embodiment of the invention, whether the vehicle collides can be judged firstly, and when the vehicle is determined to collide, step 210 can be executed, namely the passive discharge circuit of the motor controller is closed, so that the normal discharge of the whole vehicle is ensured under the working conditions of collision and the like at the extreme ends, and the safety of the whole vehicle is ensured. When it is determined that the vehicle is not in collision, step 204 may be performed; that is, when the vehicle does not collide, it is determined whether or not the passive discharge circuit is opened.

Wherein type information of the vehicle collision signal, which may include a normal type or an abnormal type, may be acquired. If the type information of the collision signal is a normal type, determining that the vehicle is not collided; if the type information of the collision signal is an abnormal type, it can be determined that the vehicle has collided.

And 204, judging whether the rotating speed of the motor of the vehicle is greater than a preset rotating speed.

In the embodiment of the invention, after the vehicle is determined not to be collided, the rotating speed of the motor of the vehicle can be acquired, and then whether the vehicle is in a parking state or not is preliminarily judged by judging whether the rotating speed of the motor of the vehicle is greater than the preset rotating speed or not. The preset rotation speed may be set to 0 as required, which is not limited in the embodiment of the present invention.

When it is determined that the motor speed of the vehicle is greater than the preset speed, it may be determined that the vehicle is not in the parking state, and at this time, it may be determined that the current state of the vehicle does not satisfy the preset condition, and step 208 may be performed. When it is determined that the motor speed of the vehicle is less than or equal to the predetermined speed, it may be preliminarily determined that the vehicle is in a parked state, at which time step 206 may be performed to further determine whether the vehicle is in a parked state.

And step 206, judging whether the gear of the vehicle is a parking gear.

In the embodiment of the invention, when the rotating speed of the motor of the vehicle is determined to be less than or equal to the preset rotating speed, the current gear of the vehicle can be obtained; and then, whether the vehicle is in a parking state or not is further judged by judging whether the current gear of the vehicle is in the parking position or not.

When the gear of the vehicle is a parking gear, the vehicle can be further determined to be in a parking state; at this time, it may be determined that the current state of the vehicle satisfies the preset condition, and step 210 may be performed. When the gear of the vehicle is not the parking gear, it may be determined that the vehicle is not in the parking state, at which time it may be determined that the current state of the vehicle does not satisfy the preset condition, step 208 may be performed.

It should be noted that the present invention is not limited to the order of step 204 and step 206, and step 204 may be executed first, and step 206 may be executed after the motor speed of the vehicle is determined to be less than or equal to the preset speed. Step 204 and step 206 may also be executed simultaneously, and then step 210 is executed when it is determined that the rotation speed of the motor of the vehicle is less than or equal to the preset rotation speed and the gear of the vehicle is the parking gear; and executing step 208 when the motor rotating speed of the vehicle is determined to be greater than the preset rotating speed or the gear position of the vehicle is not the parking gear. Of course, step 206 may be executed first, and step 204 may be executed when the gear of the vehicle is not the parking gear.

And step 208, disconnecting the passive discharge circuit.

In the embodiment of the invention, when the vehicle is determined not to be collided and the rotating speed of the motor of the vehicle is greater than the preset rotating speed, or the vehicle is determined not to be collided and the rotating speed of the motor of the vehicle is not greater than the preset rotating speed and the gear of the vehicle is not the parking gear, namely the current state of the vehicle does not meet the preset state, the passive discharge circuit can be disconnected. After the passive discharge circuit is disconnected, the passive discharge circuit is in a non-working state, and therefore electric energy loss can be reduced.

And step 210, closing the passive discharge circuit.

In the embodiment of the invention, when the vehicle is determined to be collided or the vehicle is not collided and the motor of the vehicle is not more than the preset rotating speed and the gear of the vehicle is the parking gear, namely the current state of the vehicle meets the preset state, the passive discharge circuit can be closed. After the passive discharge circuit is closed, the passive discharge circuit is in a working state, high voltage of the motor controller can be discharged, and safety of the whole vehicle is guaranteed.

In summary, in the embodiment of the present invention, on the premise that it is determined that the vehicle is not collided, it may be determined whether the rotation speed of the motor of the vehicle is greater than a preset rotation speed; if the rotating speed of the motor of the vehicle is greater than a preset rotating speed, determining that the current state of the vehicle does not meet a preset condition; if the rotating speed of a motor of the vehicle is not greater than a preset rotating speed, judging whether the gear of the vehicle is a parking gear or not; if the gear of the vehicle is not the parking gear, determining that the current state of the vehicle does not meet the preset condition; then, when the current state of the vehicle does not meet the preset condition, the passive discharge circuit is disconnected; when the vehicle is not collided and is not in a parking state, the passive discharge circuit is disconnected; therefore, on the premise of ensuring the discharge safety of the whole vehicle, the electric quantity loss of the electric drive system is reduced.

In an optional embodiment of the invention, a single passive discharge circuit can be added on the basis of the original single passive discharge circuit, so that high-voltage discharge can be carried out when the original single passive discharge circuit fails, such as device failure, and the safety of the whole vehicle is further ensured.

For convenience of subsequent description, the original passive discharge circuit may be referred to as a first passive discharge circuit, and the additional passive discharge circuit may be referred to as a second passive discharge circuit; the first passive discharge circuit is connected in parallel with the second passive discharge circuit.

On the basis of the two passive discharge circuits, how to open and close the two passive discharge circuits is explained.

Referring to fig. 3, a flow chart of steps of an alternative embodiment of a control method of the present invention is shown.

And step 302, judging whether the vehicle is collided.

When it is determined that the vehicle has collided, step 308 may be performed; when it is determined that the vehicle has not collided, step 304 may be performed.

And step 304, judging whether the rotating speed of the motor of the vehicle is greater than a preset rotating speed.

Step 314 may be performed when it is determined that the motor speed of the vehicle is greater than the preset speed. Step 306 may be performed when it is determined that the motor speed of the vehicle is less than or equal to the preset speed.

And step 306, judging whether the gear of the vehicle is a parking gear.

When the gear of the vehicle is the park gear, step 308 may be performed. When the gear of the vehicle is not park, step 314 may be performed.

Step 302 to step 306 are similar to step 202 to step 206, and are not described herein again.

And step 308, closing the first passive discharge circuit.

In the embodiment of the invention, when the current state of the vehicle is determined to meet the preset condition, the first passive discharge circuit can be closed.

In the embodiment of the invention, the first passive discharge circuit may have faults such as device failure, and at the moment, in order to perform high-voltage discharge, the safety of the whole vehicle is ensured; step 310 may be performed to determine whether the first passive discharge circuit is malfunctioning.

And 310, judging whether the high-voltage reduction speed of the motor controller is less than a preset speed or not.

In the embodiment of the invention, in the process of carrying out high-voltage discharge by adopting the first passive discharge circuit, if the first passive discharge circuit does not have a fault, the high-voltage is reduced at a certain speed; if the first passive discharge circuit fails, the speed of the high-voltage drop is slowed down. Therefore, the preset speed can be set in advance based on the descending speed of the high-voltage when the first passive discharge circuit does not have faults; and then judging whether the first passive discharge circuit has a fault or not by judging whether the high-voltage drop speed of the motor controller is less than a preset speed or not.

Since the dropping speeds of the high-voltage voltages of the motor controllers of different vehicles are different when the first passive discharge circuit is not in failure; it is therefore possible to obtain a large number of vehicle motor controllers, the speed of the drop of the high-voltage when the first passive discharge circuit is not malfunctioning. Then, based on a large number of vehicle motor controllers, the speed of decrease of the high-voltage when the first passive discharge circuit is not malfunctioning is determined as the preset speed.

In one example, a minimum value of a falling speed of the high voltage when the first passive discharge circuit is not failed may be selected as the preset speed. In another example, a number of vehicle motor controllers may also be determined, the average of the speed of fall of the high voltage when the first passive discharge circuit is not malfunctioning; then taking the average value as a preset speed; the embodiments of the present invention are not limited in this regard.

When it is determined that the high voltage drop rate of the motor controller is less than the preset rate, which indicates that the first passive discharge circuit is faulty, step 312 may be executed. When it is determined that the high-voltage drop speed of the motor controller is greater than or equal to the preset speed, it indicates that the first passive discharge circuit has not failed, and at this time, step 302 may be executed again, that is, it may be determined again whether to continue to close the passive discharge circuit or to open the passive discharge circuit.

Step 312, close the second passive discharge circuit.

In the embodiment of the invention, when the falling speed of the high-voltage of the motor controller is less than the preset speed, the second passive discharge circuit can be closed; and then high-voltage discharge can be carried out, and the safety of the whole vehicle is ensured.

The first passive discharge circuit can be opened or not while the second passive discharge circuit is closed; the embodiments of the present invention are not limited in this regard.

And step 314, opening the first passive discharge circuit and/or the second passive discharge circuit.

In one example of the present invention, the first passive discharge circuit and the second passive discharge circuit may respectively adopt a switch control. When the switch of the first passive discharge circuit is closed, the first passive discharge circuit is closed; when the switch of the first passive discharge circuit is turned off, the first passive discharge circuit is turned off. When the switch of the second passive discharge circuit is closed, the second passive discharge circuit is closed; when the switch of the second passive discharge circuit is turned off, the second passive discharge circuit is turned off.

When the current state of the vehicle does not meet the preset condition, if the first passive discharge circuit is closed and the second passive discharge circuit is opened, the first passive discharge circuit can be opened; if the first passive discharge circuit and the second passive discharge circuit are both closed, the first passive discharge circuit and the second passive discharge circuit can be disconnected, or the second passive discharge circuit can be disconnected; if the first passive discharge circuit is opened, the second passive discharge circuit is closed, and the second passive discharge circuit can be opened.

In summary, in the embodiment of the present invention, after the first passive discharge circuit is closed, it can be determined whether the high voltage drop speed of the motor controller is less than a preset speed; if the high-voltage drop speed of the motor controller is determined to be smaller than the preset speed, closing the second passive discharge circuit; and then when the original one-way passive discharge circuit breaks down, such as the device fails, high-voltage discharge can be carried out, and the safety of the whole vehicle is further ensured.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.

The embodiment of the invention also provides a control device which is applied to a vehicle, wherein the vehicle comprises a passive discharge circuit of the motor controller.

Referring to fig. 4, a block diagram of a control device according to an embodiment of the present invention is shown, which may specifically include the following modules:

a judging module 402, configured to judge whether a current state of the vehicle meets a preset condition;

and a closing module 404, configured to close the passive discharge circuit if it is determined that the current state of the vehicle meets a preset condition.

Referring to fig. 5, a block diagram of an alternative embodiment of a control device of the present invention is shown.

In an optional embodiment of the present invention, the determining module 402 includes:

the collision judgment sub-module 4022 is used for judging whether the vehicle collides;

the determining submodule 4024 is configured to determine that a current state of the vehicle meets a preset condition if it is determined that the vehicle collides.

In an optional embodiment of the present invention, if it is determined that the vehicle is not in collision, when the rotation speed of the motor of the vehicle is not greater than a preset rotation speed and the gear of the vehicle is a parking gear, it is determined that the current state of the vehicle meets a preset condition.

In an optional embodiment of the present invention, the apparatus further comprises:

a disconnection module 406, configured to disconnect the passive discharge circuit when the rotation speed of the motor of the vehicle is greater than a preset rotation speed or the gear of the vehicle is not a parking gear if it is determined that the vehicle is not in a collision.

In an alternative embodiment of the present invention, the passive discharge circuit includes: a first passive discharge circuit and a second passive discharge circuit;

the closing module 404 includes:

a first circuit closing submodule 4042 for closing the first passive discharge circuit;

the speed judgment submodule 4044 is used for judging whether the high-voltage reduction speed of the motor controller is smaller than a preset speed or not;

a second circuit closing submodule 4046, configured to close the second passive discharge circuit if it is determined that the high-voltage drop speed of the motor controller is smaller than a preset speed.

In an alternative embodiment of the present invention, the passive discharge circuit includes: a first passive discharge circuit and a second passive discharge circuit, and the disconnection module 406 is configured to disconnect the first passive discharge circuit and/or the second passive discharge circuit.

In summary, in the embodiment of the present invention, it may be determined whether the current state of the vehicle meets a preset condition; and when the current state of the vehicle is determined to meet the preset condition, closing the passive discharge circuit of the motor controller. Compared with a passive discharge circuit of a normally closed motor controller in the prior art, the embodiment of the invention closes the passive discharge circuit when the preset condition is met, shortens the working time of the passive discharge circuit of the motor controller, and further can reduce the electric quantity loss of the passive discharge circuit, thereby reducing the electric quantity loss of an electric drive system and achieving the purpose of increasing the vehicle endurance.

For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

Embodiments of the present invention also provide a vehicle, including a memory, and one or more programs, where the one or more programs are stored in the memory, and configured to be executed by one or more processors includes a control method for performing any of the above methods.

Embodiments of the present invention also provide a readable storage medium, and when instructions in the storage medium are executed by a processor of a vehicle, the vehicle is enabled to execute any one of the control methods described above.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The control method, the control device and the vehicle provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.