WO2014029177A1

WO2014029177A1 - Control device used for electric vehicle

Info

Publication number: WO2014029177A1
Application number: PCT/CN2012/086013
Authority: WO
Inventors: 王野; 张春淮; 杜晓佳; 王春凤
Original assignee: 北汽福田汽车股份有限公司; 北京智科投资管理有限公司
Priority date: 2012-08-20
Filing date: 2012-12-06
Publication date: 2014-02-27
Also published as: CN103625304B; CN103625304A

Abstract

A control device used for an electric vehicle comprises a vehicle controller (110) and a motor controller (120), the motor controller (120) being connected to the vehicle controller (110), the motor controller (120) and the vehicle controller (110) being disposed on the same circuit board, the vehicle controller (110) implementing control to the vehicle and being used for performing safety performance monitoring and assistant management and control on the motor controller (120), and the motor controller (120) implementing control to a motor and being used for performing safety performance monitoring and assistant management and control on the vehicle controller (110); a bi-functional controller signal connector (130), used for electrically connecting the vehicle controller (110) and the motor controller (120) with wire harnesses of the vehicle; and a power supply module, used for supplying power for the vehicle controller (110) and the motor controller (120). The control device according to an embodiment of the present invention is safe and reliable in performance and is low in cost.

Description

Control device for electric vehicle This application claims priority to Chinese Patent Application No. 201210298156.3, entitled "Control Device for Electric Vehicles", filed on August 20, 2012, the entire contents of which is incorporated herein by reference. This is incorporated herein by reference. Technical field

The present invention relates to the field of automobile manufacturing technology, and more particularly to a control device for an electric vehicle.

Background technique

The advantages of high energy saving and low pollution of electric vehicles make it the main direction of the development of modern automobiles, so it is very important to develop and research the key technologies of electric vehicles. Vehicle controllers, motor controllers, battery management systems, etc., as the core components of electric vehicle electronic control systems, have become an important research content of electric vehicle technology. The vehicle controller, motor controller, battery management system, etc. of the electric vehicle are responsible for the comprehensive control of the entire electric vehicle, and its reliability directly affects the reliability of the electric vehicle and relates to the safety of the electric vehicle. Among them, as the development technology of various controllers matures, the integration of different function controllers on electric vehicles has become an inevitable trend, which will bring more benefits to the component layout and system cost of electric vehicles. .

In general, controllers with different functions on conventional vehicles are independently installed in different positions on the vehicle. In recent years, with the increasing definition of electric vehicle system, in order to more efficiently utilize the space on the vehicle and better control the system cost, some electric vehicle manufacturers can integrate different functions of the controller into one box, which can save The outer casing of some function controllers can effectively reduce the overall volume of the controller and reduce the number of assembly parts of the whole vehicle, improve the space utilization rate of the whole vehicle and improve the production efficiency. The integrated arrangement of different function controllers for electric vehicles The system cost optimization has 4 big help. Some electric vehicle manufacturers have begun to consider integrating controllers with different functions onto one circuit board. However, the above method only realizes the integration of the single level of the tube, and still has the integration level and the functional safety level of the integrated controller. Further research is needed. The disadvantages of the existing integration methods are: either the integration is not high enough, or the functional safety level still needs to be considered independently to reach the original level. Summary of the invention

The present invention aims to solve at least one of the above technical problems.

Accordingly, it is an object of the present invention to provide a control device for an electric vehicle that is safe and reliable in performance.

In order to achieve the above object, an embodiment of the present invention provides a control apparatus for an electric vehicle, including: a vehicle controller and a motor controller, wherein the vehicle controller and the motor controller each have a CAN communication interface The motor controller is connected to the vehicle controller and disposed on the same circuit board, and the vehicle controller realizes complete vehicle control and is used for detecting whether the motor controller is abnormal, and detecting the When there is an abnormality in the motor controller, the motor controller is assisted in management and control, and the motor controller realizes the motor control and is used to detect whether the vehicle controller is abnormal, and the vehicle is detected. When the controller has an abnormality, the vehicle controller is assisted in management and control; the dual-function controller signal connector is used to complete the electrical connection between the vehicle controller and the motor controller and the vehicle wiring harness; And a power module, wherein the power module is respectively connected to the vehicle controller and the motor controller, and is configured to supply power to the vehicle controller And supplying power to the motor controller.

Further, the control apparatus for an electric vehicle according to the above embodiment of the present invention may further have the following additional technical features:

In some examples, the power module includes: a first power module connected to the vehicle controller and the motor controller for supplying power to the vehicle controller; and a second power module, and The vehicle controller and the motor controller are both connected to supply power to the motor controller.

In some examples, the method further includes: a vehicle controller peripheral processing circuit, connected to the vehicle controller and the motor controller; a motor controller peripheral processing circuit, and the vehicle controller and the motor The controllers are all connected; In some examples, the vehicle controller has a plurality of pins and is connected to the second power module through a portion of pins, and the vehicle controller is further configured to perform an abnormality detection on the second power module. And auxiliary control.

In some examples, the vehicle controller is coupled to the motor controller peripheral processing circuit via another portion of a pin, and the vehicle controller is further configured to perform anomaly detection and assistance on the motor controller peripheral processing circuit. control.

In some examples, the motor controller has a plurality of pins and is connected to the first power module through a portion of pins, and the motor controller is further configured to perform anomaly detection and assistance on the first power module. control.

In some examples, the motor controller is coupled to the vehicle controller peripheral processing circuit via another portion of the pin, the motor controller further for detecting and controlling the vehicle controller peripheral processing circuitry.

In some examples, the motor controller is coupled to the vehicle controller via a serial peripheral interface SPI for completing between the motor controller and the vehicle controller Security monitoring information interaction.

In some examples, the vehicle controller includes a motor controller safety monitoring unit for separately performing safety performance monitoring and control of the motor controller.

In some examples, the motor controller includes a vehicle controller safety monitoring unit for separately performing safety performance monitoring and control of the vehicle controller.

In some examples, the vehicle controller and the motor controller are mounted in a control box.

According to the embodiment of the present invention, the functions and security levels necessary for the original two function controllers are retained, and the deep integration of the dual-function controller is maximized. The dual-function controller in the embodiment of the invention realizes comprehensive integration in mechanical structure, hardware circuit, software algorithm and the like, and realizes the maximum integration and control device cost while increasing the difficulty of the respective development of the dual-function controller. Optimization. In practical applications, better flexible application can be retained, and any one of the function controllers can be used alone or simultaneously. When the dual-function controller is assembled on the vehicle, it can also optimize the production process to reduce the number of controller assemblies. The additional aspects and advantages of the invention will be set forth in part in the description which follows. DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a structural view of a control device for an electric vehicle according to an embodiment of the present invention. detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "previous", "post", "left", "right", " The orientation or positional relationship of the indications of "", "horizontal", "top", "bottom", "inner", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and The description of the present invention is not intended to be a limitation of the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be either a fixed connection or a detachable, unless otherwise explicitly defined and defined. Connected, or connected integrally; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood by one of ordinary skill in the art in light of the circumstances.

A control apparatus for an electric vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Referring to FIG. 1, a control apparatus 100 for an electric vehicle according to an embodiment of the present invention includes a vehicle controller 110, a motor controller 120, a dual function controller signal connector 130, and a power module 140. among them:

The vehicle controller 110 and the motor controller 120 each have a CAN (Controller Area Network) communication interface, so that the vehicle controller 110 and the motor controller 120 pass through respective CAN communication interfaces and peripheral devices of the electric vehicle. For example, the motor controller 120 is connected to the vehicle controller 110 and disposed on the same circuit board (not shown), that is, the motor controller 120 and the vehicle controller 110 are integrated on the same circuit board. In an embodiment of the invention, the vehicle controller 110 and the motor controller 120 are also mounted in a control box. The vehicle controller 110 is configured to detect whether an abnormality has occurred in the motor controller 120, and to assist in the management and control of the motor controller 120 when it is detected that there is an abnormality in the motor controller 120. For example, the motor controller 120 performs safety monitoring on the vehicle controller 110. As a specific example, the motor controller 120 and the vehicle controller 110 are connected through a serial peripheral interface SPI (Serial Peripheral Interface). The SPI interface is used to complete the interaction of the safety monitoring information between the motor controller 120 and the vehicle controller 110. For example, the vehicle controller 110 acquires the algorithm logic information of the motor controller 120 through the SPI interface, and then the vehicle controller 110 The algorithm logic of the motor controller 120 is verified. If an error occurs in the algorithm logic of the motor controller 120, the motor controller 120 can be auxiliaryly managed and controlled through the SPI interface, so as to be in the motor controller 120. The algorithm logic error is corrected to continue normal operation, or, after detecting an abnormality in the motor controller 120, the control motor controller stops working and waits for maintenance by the maintenance personnel.

The motor controller 120 is configured to detect whether an abnormality has occurred in the vehicle controller 110, and assists in managing and controlling the vehicle controller 110 when it is detected that there is an abnormality in the vehicle controller 110. In this example, the safety monitoring of the vehicle controller 110 by the motor controller 120 is similar to the safety monitoring of the motor controller 120 by the vehicle controller 110 in the above example, and is not redundant, and will not be described again.

The dual function controller signal connector 130 is used to complete the electrical connection between the vehicle controller 110 and the motor controller 120 and the entire vehicle harness, that is, the vehicle controller 110 and the motor control The device 120 implements an electrical functional connection with the vehicle wiring harness through the dual function controller signal connector 130. The dual function controller signal connector 130 can be directly connected to the vehicle controller 110 and the motor controller 120. Of course, it can also be connected to the corresponding controller through the respective peripheral processing circuits of the two controllers.

The power module 140 is coupled to the vehicle controller 110 and the motor controller 120, respectively, for supplying power to the vehicle controller 110 and the motor controller 120. Further, in conjunction with FIG. 1, the power module 140 of the embodiment of the present invention includes a first power module 141 and a second power module 142. The first power module 141 is connected to the vehicle controller 110 and the motor controller 120 for supplying power to the vehicle controller 110. The second power module 142 is coupled to both the vehicle controller 110 and the motor controller 120 for powering the motor controller 120. That is, the first power module 141 independently supplies power to the vehicle controller 110, and the second power module 142 independently supplies power to the motor controller 120.

In addition, the control device 100 further includes a vehicle controller peripheral processing circuit 150 and a motor controller peripheral processing circuit 160. Wherein: the vehicle controller peripheral processing circuit 150 is connected to the vehicle controller 110 and the motor controller 120. The motor controller peripheral processing circuit 160 is coupled to both the vehicle controller 110 and the motor controller 120.

In an embodiment of the present invention, the vehicle controller 110 can perform not only safety performance monitoring of the motor controller 120 but also the second power module 142 and the motor controller peripheral processing circuit 160 that supply power to the motor controller 120. Safety performance monitoring and auxiliary control. Similarly, the motor controller 120 can not only perform safety performance monitoring on the vehicle controller 110, but also perform safety performance monitoring on the first power module 141 and the vehicle controller peripheral processing circuit 150 that supply power to the vehicle controller 110. The auxiliary control, specifically, is as follows: The vehicle controller 110 has a plurality of pins, such as pin 1 and pin 2 shown in FIG. 1, and passes through a part of the pins, as shown in FIG. The second power module 142 is connected, and the vehicle controller 110 is further configured to perform abnormality detection and auxiliary control on the second power module 142. For example, the second power module 142 and the watchdog (a type of chip dedicated to monitoring the running state of the microcontroller program, commonly known as a watchdog) are assisted in management and control. Further, the vehicle controller 110 is connected to the motor controller peripheral processing circuit 160 through another part of the pin, as shown in FIG. 1, and the vehicle controller 110 is also used to the periphery of the motor controller. The processing circuit 160 performs abnormality detection and auxiliary control, for example, assisting management and control of signals in the motor controller peripheral processing circuit 160, and the like.

The vehicle controller 110 performs abnormality detection and auxiliary control on the second power module 142 and the motor controller peripheral processing circuit 160 for abnormality detection and auxiliary control, and the vehicle controller 110 detects the motor controller 120 in the above example. The control method is similar and will not be described here.

The motor controller 120 has a plurality of pins, such as pin 3 and pin 4 shown in FIG. 1, and is connected to the first power module 141 through a part of pins, such as pin 3, and the motor controller 120 is also used for The first power module 141 performs abnormality detection and auxiliary control. Further, the motor controller 120 is connected to the vehicle controller peripheral processing circuit 150 via another portion of a pin, such as the pin 4, which is also used to detect and control the vehicle controller peripheral processing circuit 150.

The motor controller 120 performs abnormality detection and auxiliary control on the first power module 141 and the vehicle controller peripheral processing circuit 150 for abnormality detection and auxiliary control, and the detection of the motor controller 120 by the vehicle controller 110 in the above example. The control method is similar and will not be described here.

In practical applications, in order to ensure the safe operation of the vehicle controller 110 and the motor controller 120, an independent safety monitoring unit may be separately provided. For example, as shown in FIG. 1, the motor controller safety monitoring unit is set in the vehicle controller 110. SCU1 is used to separately monitor and control the safety performance of the motor controller 120. In addition, the vehicle controller 120 is provided with a vehicle controller safety monitoring unit SCU2 for separately performing safety performance monitoring and control on the vehicle controller 110.

The two function controllers of the control device 100 of the embodiment of the present invention, that is, the vehicle controller 110 and the motor controller 120, realize the safety monitoring function for another controller while realizing the respective main control functions, and two function controls The safety monitoring information of the device is transmitted through the SPI communication port between the two function controllers. In this example, the functions and safety monitoring performance of the two function controllers can reach the existing independent controller. Functional safety level.

[Examples] Taking the vehicle controller 110 as an example for detailed description of the detailed functions: The vehicle controller 110 is required to achieve the safety level required for the entire control device 100. In the conventional manner, a safety monitoring chip needs to be separately installed to control the entire vehicle. The algorithm logic of the device 110, the watchdog, the first power module 141 that supplies power to the vehicle controller 110, and the important peripheral signals in the vehicle controller peripheral processing circuit 150 are monitored. In the example of the present invention, the functional safety monitoring required for the vehicle controller system is implemented by the vehicle controller safety monitoring unit SCU2 in the motor controller 120. In this example, the vehicle controller safety monitoring unit SCU2 is a unit integrated in the motor controller 120 that implements safety performance monitoring with software functions, but the operation of the SCU2 software function unit is relatively independent of the main motor controller 120. Control software. The SCU2 software function unit performs algorithmic logic verification with the vehicle controller 110 through the SPI interface, and implements auxiliary management of the first power module 141 and the watchdog of the vehicle controller 110 through several pins of the motor controller 120. Controlling, monitoring and controlling important signals in the peripheral processing circuit 150 of the vehicle controller through the other pins of the motor controller 120, and interacting with the vehicle controller 110 through the SPI interface . Similarly, the motor controller 120 implements the primary functions of the motor controller 120 in the same manner and achieves the intended functional safety level by the SCU 1 in the vehicle controller 110.

In summary, the control device for an electric vehicle according to an embodiment of the present invention integrates the dual-function controller on the same circuit board, and adopts two independent function controllers to perform independent main function control, and at the same time, two Each of the processors is provided with a safety monitoring function module SCU1 and SCU2 to provide a safety monitoring function for another controller. Specifically, in the embodiment of the present invention, the security monitoring modules integrated into the two controllers, such as SCU1 and SCU2, perform algorithmic logic verification with another controller processor through the SPI port, through the control of SCU1 or SCU2. The processor manages and controls the power and watchdog of another controller, for example, by sending several pins of the controller processor where SCU1 or SCU2 are located to the power and watchdog of the other controller. In addition, the controller processor in which SCU1 or SCU2 is located monitors and controls important signals in the peripheral processing circuit of another controller, such as another pin of the controller processor where SCU1 or SCU2 is located. One control Important signals in the peripheral processing circuit of the controller; the security monitoring module in the two controllers also interacts with the other controller processor through the SPI. Has the following advantages:

By integrating the vehicle controller and the motor controller in the above manner, the functions and safety levels necessary for the original two function controllers are retained, and the deep integration of the dual function controllers is maximized. The dual-function controller in the embodiment of the invention realizes comprehensive integration in mechanical structure, hardware circuit, software algorithm and the like, and realizes maximum integration and optimization of control device cost. In practical applications, better flexible application can be retained, and any one of the function controllers can be used alone or simultaneously. When the dual-function controller is assembled on the whole vehicle, it can also optimize the production process and reduce the number of controller assemblies.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means specific features described in connection with the embodiments or examples. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

Rights request

1. A control device for an electric vehicle, characterized in that it includes: a vehicle controller and a motor controller, both the vehicle controller and the motor controller have CAN communication interfaces, and the motor controller Connected to the vehicle controller and disposed on the same circuit board, the vehicle controller is used to detect whether an abnormality occurs in the motor controller, and when an abnormality in the motor controller is detected, the motor The controller performs auxiliary management and control. The motor controller is used to detect whether an abnormality occurs in the vehicle controller. When an abnormality is detected in the vehicle controller, it performs auxiliary management and control on the vehicle controller. control;

Dual-function controller signal connector, used to complete the electrical connection between the vehicle controller and motor controller and the vehicle wiring harness; and

A power module, the power module is connected to the vehicle controller and the motor controller respectively, and is used to supply power to the vehicle controller and the motor controller.

2. The control device for electric vehicles according to claim 1, characterized in that the power module includes:

A first power module, connected to both the vehicle controller and the motor controller, is used to supply power to the vehicle controller; and

The second power module is connected to both the vehicle controller and the motor controller, and is used to supply power to the motor controller.

3. The control device for electric vehicles according to claim 1 or 2, further comprising:

The vehicle controller peripheral processing circuit is connected to both the vehicle controller and the motor controller;

A motor controller peripheral processing circuit is connected to both the vehicle controller and the motor controller.

4. The control device for electric vehicles according to claim 3, characterized in that the vehicle controller has a plurality of pins, and is connected to the second power module through a part of the pins, and the entire vehicle controller The vehicle controller is also used to perform abnormality detection and auxiliary control on the second power module.

5. The control device for electric vehicles according to claim 4, characterized in that the vehicle controller is connected to the motor controller peripheral processing circuit through another part of pins, and the vehicle controller further Used to perform abnormality detection and auxiliary control on the peripheral processing circuit of the motor controller.

6. The control device for electric vehicles according to claim 3, characterized in that, the motor controller has a plurality of pins, and is connected to the first power module through a part of the pins, and the motor controller The controller is also used to perform abnormality detection and auxiliary control on the first power module.

7. The control device for electric vehicles according to claim 6, characterized in that the motor controller is connected to the peripheral processing circuit of the vehicle controller through another part of pins, and the motor controller also uses It is used to detect and control the peripheral processing circuit of the vehicle controller.

8. The control device for electric vehicles according to claim 1 or 2, characterized in that the motor controller and the vehicle controller are connected through a serial peripheral interface SPI, and the serial peripheral interface SPI Used to complete the interaction of safety monitoring information between the motor controller and the vehicle controller.

9. The control device for electric vehicles according to claim 1 or 2, characterized in that the vehicle controller includes: a motor controller safety monitoring unit for individually performing safety checks on the motor controller. Performance monitoring and control.

10. The control device for electric vehicles according to claim 1 or 2, characterized in that the motor controller includes: a vehicle controller safety monitoring unit for individually monitoring the vehicle controller. Safety performance monitoring and control.

11. The control device for electric vehicles according to any one of claims 1 to 10, characterized in that the vehicle controller and the motor controller are installed in a control box.