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Backup power supply, drive controller and electric vehicle

A technology of backup power supply and driving voltage, applied in emergency power supply arrangement, electrical components, circuit devices, etc., can solve the problems of inability to meet the requirements of higher voltage applications, high cost of backup power supply, difficult selection, etc. The effect of thermal design, simple structure, and no power consumption

Active Publication Date: 2022-07-26
SUZHOU INOSA UNITED POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new backup power supply, drive controller and electric car

Method used

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  • Backup power supply, drive controller and electric vehicle
  • Backup power supply, drive controller and electric vehicle
  • Backup power supply, drive controller and electric vehicle

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Embodiment Construction

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0029] like Figure 4Shown is a schematic diagram of an embodiment of the backup power supply of the present invention, the backup power supply can be applied to the drive controller, and when the drive controller fails (such as a low-voltage battery failure), the drive circuit or the semiconductor switch tube of the inverter outputs the drive voltage, so that the switch tube of the lower bridge arm of the inverter is turned on at the same time, so as to actively short-circuit the motor and realize rapid shutdown. The backup power supply of this embodiment includes a positive input termin...

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Abstract

The invention provides a backup power supply, a drive controller and an electric vehicle. The backup power supply includes a positive input terminal, a negative input terminal, a positive output terminal, a negative output terminal, a first switch tube, a freewheeling branch, a driving unit and filter circuit; wherein: the positive input terminal is connected to the positive terminal of the filter circuit via the first switch tube, the negative input terminal is connected to the negative terminal of the filter circuit; the output terminal of the driving unit is connected to the The control terminal of the first switch tube, and the driving unit outputs a first driving voltage signal to the control terminal of the first switch tube according to the voltage of the positive output terminal, so that the voltage of the positive output terminal is maintained at a preset value. within the setting range. According to the load power condition of the backup power supply, the invention adaptively adjusts the working state of the backup power supply through the driving unit, so that the backup power supply is in the backup state and basically does not consume power, which is beneficial to the thermal design of the circuit.

Description

technical field [0001] The invention relates to the field of motor control, and more particularly, to a backup power supply, a drive controller and an electric vehicle. Background technique [0002] With the development of electric vehicle technology, electric vehicles are accepted by more and more people, and accordingly, the safety requirements for electric vehicles are getting higher and higher. like figure 1 As shown, in the existing electric vehicle, the high-voltage terminal 10 provides electrical energy for the operation of the motor. Specifically, the high-power DC conversion circuit 11 converts the high-voltage DC provided by the high-voltage terminal 10 into low-voltage DC and charges the low-voltage battery 12. The motor controls The inverter 15, the lower arm drive power 13, and the upper arm drive power 14 are powered by the low-voltage battery 12. The motor controller 15 generates a drive control signal according to the feedback voltage and feedback current ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H02M1/32
CPCH02J9/062H02M1/32Y04S20/20
Inventor 金茜
Owner SUZHOU INOSA UNITED POWER SYST CO LTD
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