CN213069104U

CN213069104U - Durable test system of electric automobile driving motor

Info

Publication number: CN213069104U
Application number: CN202021811866.8U
Authority: CN
Inventors: 袁文华; 谢勇辉; 杨东文
Original assignee: Hepu Power Co ltd
Current assignee: Hepu Power Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-27
Anticipated expiration: 2030-08-26

Abstract

The utility model provides an electric automobile driving motor endurance test system which characterized in that includes the rack bottom plate, sets up the bearing box on the rack bottom plate, sets up the motor of accompanying and testing on the bearing box that is connected with the motor under test, by motor controller, accompany and test motor controller, two sets of three-phase line, two sets of low-voltage wire harnesses, host computer, two sets of power cords, DC power supply cabinet. Compared with the prior art, the utility model, have and to realize a simple structure, with low costs, the energy consumption is little and can the durable test information's of automatic recording advantage.

Description

Durable test system of electric automobile driving motor

Technical Field

The utility model relates to a motor technology.

Background

With the vigorous development of electric automobiles, the driving motors of the electric automobiles are used more and more widely, and the safety of the driving motor system is particularly important as a power source of the electric automobiles. The national standard GB/T29307 and 2012 reliability test method for the drive motor system for the electric automobile makes requirements on the durability of the drive motor system, and the industrial standard and each whole automobile plant make higher requirements on the drive motor system than the national standard.

The performance test of the driving motor system of the electric automobile is mainly completed through a motor dynamometer, the existing endurance test system is basically a scheme of a dynamometer system which is continuously used, but the system is complex in structure and high in cost, for endurance test, the national standard requires 402 hours, some automobile factories require a test of a road spectrum for 800 hours or longer time, the long-time test is very large in abrasion and consumption of the test system in the province, and the energy consumption of the high-power dynamometer is very high, so that a special endurance test system which is simple in system, low in cost and small in energy consumption is required.

Disclosure of Invention

The utility model aims at providing a durable test system of electric automobile driving motor simple structure, use cost are low, the low power dissipation.

The utility model discloses a realize like this: the system comprises a rack bottom plate, a bearing box arranged on the rack bottom plate, an accompanying motor arranged on the bearing box connected with a tested motor, a tested motor controller, an accompanying motor controller, two groups of three-phase lines, two groups of low-voltage wire harnesses, an upper computer, two groups of power lines and a direct-current power supply cabinet, wherein the direct-current power supply cabinet for converting power taken by a power grid into direct current is respectively connected with the tested motor controller and the accompanying motor controller through respective power lines, the tested motor controller and the accompanying motor controller are respectively connected with the tested motor and the accompanying motor through respective three-phase lines, sensors including a rotating speed sensor and a temperature sensor on the tested motor and the accompanying motor are respectively connected with the electric signal input end of the tested motor controller and the electric signal input end of the accompanying motor controller through respective low-voltage wire harnesses, and the control signal output end of the upper computer is respectively connected with the control signal input end of the tested motor controller and the control end of the accompanying motor controller The signal input ends are connected.

During operation, the tested motor and the accompanying test motor are respectively arranged at two ends of the bearing box, so that the same rotating speed and load can be ensured by the same shaft. The accompanying motor can be the same as the tested motor, so that the durability test of the two motors can be completed through one-time test. In the test process, the tested motor and the accompanying motor are electrically driven by one motor and generate power by the other motor, and the actual energy consumption is low by circulating in the direct-current power supply cabinet.

Compared with the prior art, the utility model, have and to realize a simple structure, with low costs, the energy consumption is little and can the durable test information's of automatic recording advantage.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in the figure, the utility model comprises a rack bottom plate 1, a bearing box 2 arranged on the rack bottom plate 1, an accompanying motor 4 arranged on the bearing box 2 connected with a tested motor 3, a tested motor controller 5, an accompanying motor controller 6, two groups of three-phase wires 7, two groups of low-voltage wire harnesses 8, an upper computer 9, two groups of power wires 10 and a DC power cabinet 11, wherein the DC power cabinet 11 for converting the power from the power grid into DC power is respectively connected with the tested motor controller 5 and the accompanying motor controller 6 through respective power wires 10, the tested motor controller 5 and the accompanying motor controller 6 are respectively connected with the tested motor 3 and the accompanying motor 4 through respective three-phase wires 7, the rotating speed sensors and the temperature sensors on the tested motor 3 and the accompanying motor 4 are respectively connected with the corresponding electric signal input end of the tested motor controller 5 and the electric signal input end of the accompanying motor controller 6 through respective low-voltage wire harnesses 8, and the control signal output end of the upper computer 9 is respectively connected with the control signal input end of the tested motor controller 5 and the control signal input end of the accompanying motor controller 6.

The actual electric endurance test implementation process comprises the following steps: the method comprises the steps that information such as motor rotating speed, torque and switching time required to operate in an electric state is set in an upper computer 9, the upper computer 9 sends a motor control instruction (rotating speed and torque) to a tested motor controller 5, the tested motor controller 5 inverts direct current provided by a direct current power supply cabinet 11 into alternating current to drive a tested motor 3 to electrically operate through a three-phase line 7, meanwhile, the upper computer 9 sends the motor control instruction (rotating speed and torque) to an accompanying motor controller 6, the accompanying motor controller 6 controls an accompanying motor 4 to generate electricity to operate, the generated electricity is transmitted to the accompanying motor controller 6 through the three-phase line 7 and then fed back to the direct current power supply cabinet 11 after being rectified, and the upper computer 9 automatically reads and records information such as the motor rotating speed, the torque, the current and the temperature at the same time according to a certain time interval.

Claims

1. A durability test system for a driving motor of an electric automobile is characterized by comprising a rack bottom plate, a bearing box arranged on the rack bottom plate, an accompanying motor arranged on the bearing box connected with the tested motor, a tested motor controller, an accompanying motor controller, two groups of three-phase wires, two groups of low-voltage wire harnesses, an upper computer, two groups of power wires and a direct-current power cabinet, wherein the direct-current power cabinet for converting power taken by a power grid into direct current is respectively connected with the tested motor controller and the accompanying motor controller through respective power wires, the tested motor controller and the accompanying motor controller are respectively connected with the tested motor and the accompanying motor through respective three-phase wires, sensors including a rotating speed sensor and a temperature sensor on the tested motor and the accompanying motor are respectively connected with the electric signal input end of the corresponding tested motor controller and the electric signal input end of the accompanying motor controller through respective low-voltage wire harnesses, and the control signal output end of the upper computer is respectively connected with the control signal input end of the tested motor controller and the control signal input end of the accompanying motor controller.