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High-reliability electromobile adopting low-voltage large-torque coaxial motor power system

A coaxial motor and power system technology, applied in the direction of electric vehicles, electric power devices, electric traction, etc., can solve the problems of potential safety hazards, high system reliability requirements, and potential safety hazards of electric leakage and human contact, etc., so as to improve reliability Effects on Sexuality and Lifespan

Inactive Publication Date: 2016-02-03
李鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of system has the following disadvantages when it is used: 1. There are potential safety hazards in the high-voltage system, and there are potential safety hazards that may cause electric leakage to touch people; If there is a problem, it will easily lead to the practical problem of stopping the whole vehicle, so the reliability of the system is extremely high; 3. High voltage has high requirements for power electronic components, and the cost of the components is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0012] A high-reliability electric vehicle using a low-voltage, high-torque coaxial motor power system. The power system of the vehicle uses 3 sets of permanent magnet brushless DC single motors with coaxial parallel output, 3 sets of independent motor drivers, and 3 sets of 36 series -300Ah, ternary cathode material lithium-ion battery with working voltage range of 100-150V, each permanent magnet brushless DC single motor has a rated power of 15KW, a rated voltage of 150VDC, and a rated speed of 600RPM. The car can achieve a rated torque of 716N*M and a peak torque of 1500N*M under the condition of a rated power of 45KW. The vehicle can be driven by a single motor unit when it travels above 15km / h.

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PUM

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Abstract

The invention belongs to the technical field of electromobiles, and discloses a high-reliability electromobile adopting a low-voltage large-torque coaxial motor power system. The power system mainly comprises a main controller and 2 to 6 coaxial motor power units which output power separately or synchronously via one power output spindle; and each motor power unit comprises a permanent magnet brushless DC (direct current) single-body motor sharing the same power output spindle, a corresponding single-body motor driver and a corresponding lithium ion battery pack, wherein the rated power of the single-body motor is between 5 and 25 KW, the rated voltage is between 60 and 150 V DC, and the rated speed is between 500 and 1500 RPM (Revolutions Per Minute). The power system and the electromobile adopting the system provided by the invention have the advantages of good reliability and safety.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, in particular to the field of pure electric vehicles using lithium battery packs as power. technical background [0002] Electric vehicles use high-energy-density lithium-ion batteries as power sources. Compared with traditional internal combustion engine vehicles, electric vehicles have the advantages of approximately zero emissions, and the pollution source is convenient for centralized control at the power plant. [0003] Due to the control characteristics of large torque output required for starting, climbing, etc., low torque and constant power output at high speed, traditional pure electric vehicles usually use a single high-power high-voltage motor and a single motor in order to take into account different load requirements at low speed and high speed. The system control scheme of driver and single lithium-ion battery pack. Usually, the motor driver also plays the role of the mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B60K1/02
CPCY02T10/70
Inventor 李鑫刘海廷李东山王乔林
Owner 李鑫