阅读说明：本技术 电动车的控制装置和方法 (Control device and method for electric vehicle ) 是由 李根深 杨万里 杨俊伟 肖冰 于 2021-08-13 设计创作，主要内容包括：本发明提供了电动车的控制装置和方法,该装置包括集成控制器和电池,集成控制器包括多个功率转换模块；电池的正极与集成控制器的一端相连接,电池的负极与集成控制器的另一端相连接；该方法包括通过集成控制器采集转把信号和当前车速；将转把信号和当前车速通过扭矩控制算法,得到需求电流；根据需求电流控制电机的电流；将电机控制器和功率转换器集成为集成控制器,减少了外壳和接插头,降低了成本,减少了高压线,并且实现了整车控制功能。(The invention provides a control device and a method of an electric vehicle, wherein the device comprises an integrated controller and a battery, the integrated controller comprises a plurality of power conversion modules; the positive electrode of the battery is connected with one end of the integrated controller, and the negative electrode of the battery is connected with the other end of the integrated controller; the method comprises the steps of collecting a handle transferring signal and the current vehicle speed through an integrated controller; passing the handle turning signal and the current vehicle speed through a torque control algorithm to obtain a required current; controlling the current of the motor according to the required current; the motor controller and the power converter are integrated into an integrated controller, so that the number of shells and plugs is reduced, the cost is reduced, high-voltage wires are reduced, and the control function of the whole vehicle is realized.)

1. A control apparatus of an electric vehicle, the apparatus comprising an integrated controller and a battery, the integrated controller comprising a plurality of power conversion modules;

the positive pole of the battery is connected with one end of the integrated controller, and the negative pole of the battery is connected with the other end of the integrated controller.

2. The control device of an electric vehicle according to claim 1, wherein the plurality of power conversion modules include a first power conversion module, a second power conversion module, and a third power conversion module;

the first power conversion module is used for converting 12V into 5V;

the second power conversion module is used for converting 5V into 3.3V;

the third power conversion module is used for converting 60V into 12V.

3. The control device of an electric vehicle according to claim 1, wherein the integrated controller is integrated by a motor controller and a power converter.

4. A control method of an electric vehicle, characterized by being applied to the control device of the electric vehicle of any one of claims 1 to 3, the control device of the electric vehicle including an integrated controller, the method comprising:

collecting a handle transferring signal and the current vehicle speed through the integrated controller;

the handle turning signal and the current vehicle speed are processed through a torque control algorithm through the integrated controller to obtain the required current;

and controlling the current of the motor according to the required current through the integrated controller.

5. The method of claim 4, wherein the integrated controller comprises an acquisition module, a base torque demand module, a torque arbitration power protection module, a drivability control module, a motor torque demand module, and a motor current demand module; the step of obtaining the required current by the integrated controller through the torque control algorithm by the handle signal and the current vehicle speed comprises the following steps:

the acquisition module acquires the handle transferring signal and the current vehicle speed;

the basic torque demand module obtains a first demand torque by looking up the handle signal and the current vehicle speed in a table look-up mode;

the torque arbitration power protection module judges whether the first required torque exceeds a boundary range;

the drivability control module analyzes the first required torque to obtain a second required torque when the first required torque does not exceed the boundary range;

the motor torque demand module converts the second demand torque into a motor output torque;

and the motor current demand module calculates the output torque of the motor to obtain the demand current.

6. The method of claim 5, wherein the torque arbitration power protection module determining whether the first requested torque is outside a boundary range comprises:

calculating the maximum discharge current of the battery, the maximum power of the motor and the maximum power of the motor controller;

selecting a minimum value from the maximum discharge current of the battery, the maximum power of the motor and the maximum power of the motor controller;

if the first required torque is less than the minimum value, the first required torque does not exceed the boundary range;

the first required torque exceeds the boundary range if the first required torque is greater than the minimum value.

7. The control method of an electric vehicle according to claim 5, characterized by further comprising:

the acquisition module acquires a brake signal.

8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any of the preceding claims 4 to 7 when executing the computer program.

9. A computer-readable medium having non-volatile program code executable by a processor, wherein the program code causes the processor to perform the method of any of claims 4 to 7.

Technical Field

The invention relates to the technical field of power control of electric vehicles, in particular to a control device and a control method of an electric vehicle.

Background

At present, two-wheeled electric vehicles are provided with a motor controller and an independent power converter in the field of power control.

The battery voltage needs to be simultaneously accessed to the motor controller and the power converter, so that the wiring harness is wasted; the motor controller and the power converter need two sets of connectors and two sets of structural members, so that the cost is high; and the motor controller does not have a torque control function, so that a powerful control function of the whole vehicle cannot be realized.

Disclosure of Invention

In view of this, the present invention provides a control device and method for an electric vehicle, which integrates a motor controller and a power converter into an integrated controller, reduces the number of cases and plugs, reduces the cost, reduces high-voltage cables, and implements the control function of the entire vehicle.

In a first aspect, an embodiment of the present invention provides a control apparatus for an electric vehicle, where the apparatus includes an integrated controller and a battery, where the integrated controller includes a plurality of power conversion modules;

the positive pole of the battery is connected with one end of the integrated controller, and the negative pole of the battery is connected with the other end of the integrated controller.

Further, the plurality of power conversion modules includes a first power conversion module, a second power conversion module, and a third power conversion module;

the first power conversion module is used for converting 12V into 5V;

the second power conversion module is used for converting 5V into 3.3V;

the third power conversion module is used for converting 60V into 12V.

Further, the integrated controller is integrated by the motor controller and the power converter.

In a second aspect, an embodiment of the present invention provides a control method for an electric vehicle, which is applied to the control device for an electric vehicle as described above, the control device for an electric vehicle including an integrated controller, the method including:

collecting a handle transferring signal and the current vehicle speed through the integrated controller;

the handle turning signal and the current vehicle speed are processed through a torque control algorithm through the integrated controller to obtain the required current;

and controlling the current of the motor according to the required current through the integrated controller.

Furthermore, the integrated controller comprises an acquisition module, a basic torque demand module, a torque arbitration power protection module, a drivability control module, a motor torque demand module and a motor current demand module; the step of obtaining the required current by the integrated controller through the torque control algorithm by the handle signal and the current vehicle speed comprises the following steps:

the acquisition module acquires the handle transferring signal and the current vehicle speed;

the basic torque demand module obtains a first demand torque by looking up the handle signal and the current vehicle speed in a table look-up mode;

the torque arbitration power protection module judges whether the first required torque exceeds a boundary range;

the drivability control module analyzes the first required torque to obtain a second required torque when the first required torque does not exceed the boundary range;

the motor torque demand module converts the second demand torque into a motor output torque;

and the motor current demand module calculates the output torque of the motor to obtain the demand current.

Further, the determining whether the first requested torque exceeds a boundary range by the torque arbitration power protection module includes:

calculating the maximum discharge current of the battery, the maximum power of the motor and the maximum power of the motor controller;

selecting a minimum value from the maximum discharge current of the battery, the maximum power of the motor and the maximum power of the motor controller;

if the first required torque is less than the minimum value, the first required torque does not exceed the boundary range;

the first required torque exceeds the boundary range if the first required torque is greater than the minimum value.

Further, the method further comprises:

the acquisition module acquires a brake signal.

In a third aspect, an embodiment of the present invention provides an electronic device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the method described above when executing the computer program.

In a fourth aspect, embodiments of the invention provide a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method as described above.

The embodiment of the invention provides a control device and a control method of an electric vehicle, wherein the control device comprises an integrated controller and a battery, and the integrated controller comprises a plurality of power conversion modules; the positive electrode of the battery is connected with one end of the integrated controller, and the negative electrode of the battery is connected with the other end of the integrated controller; the method comprises the steps of collecting a handle transferring signal and the current vehicle speed through an integrated controller; passing the handle turning signal and the current vehicle speed through a torque control algorithm to obtain a required current; controlling the current of the motor according to the required current; the motor controller and the power converter are integrated into an integrated controller, so that the number of shells and plugs is reduced, the cost is reduced, high-voltage wires are reduced, and the control function of the whole vehicle is realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

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

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a motor controller and power converter;

FIG. 2 is a schematic diagram of a battery in connection with a motor controller and a power converter;

fig. 3 is a schematic diagram of a control device of an electric vehicle according to a first embodiment of the present invention;

FIG. 4 is a diagram of an integrated controller according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a control method of an electric vehicle according to a second embodiment of the present invention;

fig. 6 is a schematic diagram of another integrated controller according to a second embodiment of the present invention.

Icon:

1-an integrated controller; 2-the battery.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For the understanding of the present embodiment, the following detailed description will be given of the embodiment of the present invention.

The first embodiment is as follows:

fig. 3 is a schematic diagram of a control device of an electric vehicle according to a first embodiment of the present invention.

Referring to fig. 3, the apparatus includes an integrated controller 1 and a battery 2, the integrated controller 1 including a plurality of power conversion modules;

the positive pole of the battery 2 is connected with one end of the integrated controller 1, and the negative pole of the battery 2 is connected with the other end of the integrated controller 1.

Specifically, referring to fig. 1, the motor controller includes a 60V to 12V power conversion module, a 12V to 5V power conversion module, and a 5V to 3.3V power conversion module; the power converter comprises a 60V to 12V power conversion module;

and after the motor controller and the power converter are integrated through high fusion of circuits, an integrated controller is obtained.

Referring to fig. 4, the integrated controller includes a plurality of power conversion modules including a first power conversion module, a second power conversion module, and a third power conversion module;

the first power conversion module is used for converting 12V into 5V;

the second power conversion module is used for converting 5V into 3.3V;

and the third power conversion module is used for converting 60V into 12V.

At the moment, 60V-to-12V power conversion modules in the motor controller are reduced, one power conversion circuit is omitted, the motor controller and the power converter are integrated into an integrated controller, a shell and a plug are omitted, the production and assembly processes are also reduced, and the cost is also reduced.

Referring to fig. 2, in a traditional electric vehicle routing distribution, the positive electrode of a battery is connected to one end of a motor controller and one end of a power converter, and the negative electrode of the battery is connected to the other end of the motor controller and the other end of the power converter. The high voltage line needs to feed both the motor controller and the power converter.

In fig. 3, the positive electrode of the battery is connected to one end of the integrated controller, and the negative electrode of the battery is connected to the other end of the integrated controller. The high-voltage line is changed into one line from two original lines, so that the high-voltage line is reduced, and the cost is saved.

Further, the integrated controller is integrated by the motor controller and the power converter.

In this embodiment, the integrated controller includes a plurality of power conversion modules; the positive electrode of the battery is connected with one end of the integrated controller, and the negative electrode of the battery is connected with the other end of the integrated controller; the motor controller and the power converter are integrated into an integrated controller, so that the number of shells and plugs is reduced, the cost is reduced, and high-voltage wires are reduced.

Example two:

fig. 5 is a schematic diagram of a control method of an electric vehicle according to a second embodiment of the present invention.

Referring to fig. 5, the control apparatus for an electric vehicle, which includes an integrated controller, applied to the control apparatus for an electric vehicle as described above, includes the steps of:

step S101, collecting a handle transferring signal and a current vehicle speed through an integrated controller;

step S102, a handle turning signal and the current vehicle speed are processed through a torque control algorithm through an integrated controller to obtain required current;

and step S103, controlling the current of the motor according to the required current through the integrated controller.

Specifically, an acquisition module of the integrated controller is used as input of a torque control algorithm after acquiring a handle turning signal and the current vehicle speed, and outputs the torque control algorithm to obtain the required current. The torque control algorithm can improve the power protection and limiting functions, output is smoother, driving control is better, and the whole vehicle control function is realized.

Further, referring to fig. 6, the integrated controller includes an acquisition module, a basic torque demand module, a torque arbitration power protection module, a drivability control module, a motor torque demand module, and a motor current demand module; step S102 includes the steps of:

step S201, an acquisition module acquires a handle transferring signal and a current vehicle speed;

step S202, a basic torque demand module obtains a first demand torque by looking up a table of a handle signal and the current vehicle speed;

step S203, the torque arbitration power protection module judges whether the first required torque exceeds a boundary range;

step S204, the drivability control module analyzes the first required torque to obtain a second required torque under the condition that the first required torque does not exceed the boundary range;

step S205, the motor torque demand module converts the second demand torque into a motor output torque;

and step S206, the motor current demand module calculates the output torque of the motor to obtain the demand current.

Further, step S203 includes the steps of:

step S301, calculating the maximum discharge current of the battery, the maximum power of the motor and the maximum power of the motor controller;

step S302, selecting a minimum value from the maximum discharge current of the battery, the maximum power of the motor and the maximum power of the motor controller;

step S303, if the first required torque is smaller than the minimum value, the first required torque does not exceed the boundary range;

in step S304, if the first required torque is greater than the minimum value, the first required torque exceeds the boundary range.

Further, the method further comprises:

the acquisition module acquires a brake signal.

The embodiment of the invention provides a control method of an electric vehicle, which comprises the following steps: collecting a handle transferring signal and the current vehicle speed through an integrated controller; the handle turning signal and the current vehicle speed are processed through a torque control algorithm through an integrated controller to obtain the required current; controlling the current of the motor according to the required current through the integrated controller; thereby realizing the control function of the whole vehicle.

The embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the steps of the method for controlling an electric vehicle provided in the above embodiment are implemented.

Embodiments of the present invention also provide a computer readable medium having non-volatile program codes executable by a processor, where the computer readable medium has a computer program stored thereon, and the computer program is executed by the processor to perform the steps of the control method of the electric vehicle according to the above embodiments.

The computer program product provided in the embodiment of the present invention includes a computer-readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, which is not described herein again.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.