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Automobile, and starting method and starting device of motor system under ultralow temperature environment

A motor starting and ultra-low temperature technology, which is applied in the direction of motor generator/starter, control system, motor control, etc., can solve the problem of high cost, achieve the effect of reducing product cost, expanding the range of low temperature operation, and reliable start and operation

Active Publication Date: 2019-06-11
深圳英驱新能源有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a starting method and device for motor systems in automobiles and ultra-low temperature environments in view of the defects of high cost in the prior art

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  • Automobile, and starting method and starting device of motor system under ultralow temperature environment
  • Automobile, and starting method and starting device of motor system under ultralow temperature environment
  • Automobile, and starting method and starting device of motor system under ultralow temperature environment

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] figure 2 It is a flow chart of Embodiment 1 of the start-up method of the motor system in an ultra-low temperature environment of the present invention. Firstly, the motor system is, for example, an electronic fan used to dissipate heat from an automobile engine, a drive motor of an electric vehicle, and the like. Moreover, the motor system includes a controller, a drive circuit and a motor, and of course it may further include a current sampling resis...

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Abstract

The invention relates to an automobile, and a starting method and a starting device of a motor system under an ultralow temperature environment. The starting method comprises the steps of judging whether the current environment is the ultralow temperature environment; if so, outputting a specific rotational voltage vector to a driving circuit to generate reactive power in a motor to preheat a controller, the driving circuit and the motor; judging whether a preheating termination condition is met; and if so, controlling starting of the motor by the driving circuit. With the adoption of the technical scheme, a low-temperature operation range of the motor system can be extended under the condition that a hardware circuit is not added or replaced. Therefore, the product cost is lowered.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a method and device for starting a motor system in an automobile and in an ultra-low temperature environment. Background technique [0002] The motor system is widely used, and its circuit structure is as follows: figure 1 As shown, it includes MCU, drive circuit, power electronic switching tube (such as MOS tube or IGBT), motor, electrolytic capacitor, temperature sampling circuit and other devices. In practical applications, the motor system must have the characteristics of operating in a wide temperature range. Generally, the motor system on the car requires a minimum operating temperature of -40°C, and the motor system on industrial products requires a minimum operating temperature of -20°C. Up and down, in this low temperature region, the motor system must have reliable starting and running characteristics. However, as the current global warming effect increases and other extr...

Claims

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Application Information

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IPC IPC(8): H02P1/16H02P29/62
Inventor 张晓东朱振宇钟宇明李祥生黄炎
Owner 深圳英驱新能源有限公司
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