Multiple-motor driving system for electric automobile and control method of multiple-motor driving system

A multi-motor drive, electric vehicle technology, applied in the direction of electric vehicle charging technology, electric vehicles, control drive, etc., can solve the problems of reducing the size of the entire drive system, the drive system is bulky, unfavorable to the flexible layout of the whole vehicle, and cost control , to achieve the effect of convenient and flexible layout, good control effect and fast transmission speed

Pending Publication Date: 2016-04-13
HANGZHOU BOTAN POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problem that the controllers and motors are configured in a one-to-one correspondence in the current electric vehicles, and multiple motors must be equipped with a corresponding number of controllers, resulting in a large volume of the entire drive system, which is not conducive to the flexible layout of the entire vehicle and the technology of cost control Problem: To provide a multi-motor drive system and its control method for electric vehicles, which can control multiple motors with only one control unit, effectively reducing the size of the entire drive system, facilitating flexible layout of the vehicle, and reducing costs

Method used

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  • Multiple-motor driving system for electric automobile and control method of multiple-motor driving system
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  • Multiple-motor driving system for electric automobile and control method of multiple-motor driving system

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Embodiment 1

[0022] Embodiment 1: the electric vehicle multi-motor drive system of the present embodiment, as figure 1 As shown, it includes a control unit 1, three drive units 3, three motors 4, a signal sensor 5 and a communication unit 2, the number of drive units 3 is the same as the number of motors 4, and the control unit 1 and drive unit 3 communicate through the communication unit 2 are connected, and the drive unit 3 and the motor 4 are connected in one-to-one correspondence. In this embodiment, the electric vehicle adopts the centralized drive mode of the whole vehicle, and the three motors 4 are connected in series in a serial shaft connection mode to form a motor combination to realize superimposed power output. The electric vehicle is driven by the motor combination, so only A signal sensor 5 is installed to collect the running state of the motor assembly, including the rotational position of the motor and the rotor speed, and the output end of the signal sensor 5 is connected...

Embodiment 2

[0024] Embodiment 2: the electric vehicle multi-motor drive system of the present embodiment, as figure 2As shown, it includes one control unit 1, four drive units 3, four motors 4, four signal sensors 5 and communication unit 2, the number of drive units 3 is the same as the number of motors 4, and the control unit 1 and drive unit 3 communicate through The units 2 are connected, and the drive unit 3 and the motor 4 are connected in one-to-one correspondence. In the present embodiment, the electric vehicle adopts the split-wheel independent drive mode, that is, each drive wheel of the electric vehicle is driven by its own motor 4, so each motor 4 needs to be equipped with a signal sensor 5, and the four signal sensors collect four signals respectively. The running state of the motor includes the rotational position of the motor and the rotational speed of the rotor. The output terminals of the four signal sensors 5 are respectively connected to the input terminals of the con...

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Abstract

The invention relates to a multiple-motor driving system for an electric automobile and a control method of the multiple-motor driving system. The multiple-motor driving system comprises only one control unit, a communication unit, at least two driving units, motors and a signal transducer which is used for collecting the running state of the motors, wherein the control unit is connected with the driving units through the communication unit; the driving units and the motors are in one-to-one correspondence and connection; an output terminal of the signal transducer is connected with the control unit. The control method comprises the following steps that the control unit receives operating instructions from a driver of the electric automobile and then sends out a control signal which is transmitted to the driving units through the communication unit, the driving units drive the motors to operate, and the signal transducer collects the running state of the motors in real-time and transmits information back to the control unit, so that the real-time monitoring of the motors is realized. According to the multiple-motor driving system and the control method thereof disclosed by the invention, one control unit can control a plurality of motors, so that the controlled run of the motors in serial shaft type connection and the controlled run of a plurality of separate wheel driving motors in the electric automobile are convenient to realize, the volume is reduced, the arrangement is flexible, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of electric vehicle manufacturing, in particular to an electric vehicle multi-motor drive system and a control method thereof. Background technique [0002] With the ever-changing types and forms of electric vehicles, the requirements for driving motors and their control systems are also getting higher and higher. New types of electric vehicles, such as modular combined motor drive and multi-wheel independent drive, have attracted widespread attention in the industry due to their ideal power combination, cost advantage, and good application background such as handling performance. [0003] In the prior art, electric vehicles generally use a single motor drive system for front-wheel drive or rear-wheel drive, and one controller matches one drive motor, that is, one controller controls one drive motor. If a vehicle is driven by multiple motors, a corresponding number of controllers needs to be configured, resulting in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/32
CPCY02T90/16
Inventor 聂亮厉蒋高涛刘一达
Owner HANGZHOU BOTAN POWER TECH CO LTD
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