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DC/DC converter conversion control system

A conversion control and converter technology, which is applied in the control/regulation system, output power conversion device, DC power input conversion to DC power output, etc., can solve the problems of not adapting to the integrated control environment, large volume, complex structure, etc. It achieves the effect of being conducive to integrated design, small system size and simple design structure

Pending Publication Date: 2022-02-01
DONGFENG AUTOMOBILE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems in the prior art that the DC-DC converter control system has a complex structure, a large volume and is not suitable for an integrated control environment, and provides a DC-DC converter that can meet the safety and functional requirements, and at the same time DC / DC Converter Conversion Control System and Control Method Easy to Integrate Arrangement and Control

Method used

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  • DC/DC converter conversion control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] A DC / DC converter conversion control system, the control system includes: a voltage stabilizing and filtering unit 1, a high-frequency transforming unit 2, a feedback circuit 3, a PWM control unit 4, a hard-wire enable switch 5, and a software enable switch 6;

[0098] The voltage stabilizing and filtering unit 1 supplies power to the high-frequency transformer unit 2 and the PWM control unit 4, the output terminal of the high-frequency transformer unit 2 is connected to the load, and the feedback terminal of the high-frequency transformer unit 2 is connected to the feedback circuit 3, the output end of the feedback circuit 3 is connected to the feedback signal input end of the PWM control unit 4, and the control signal output end of the PWM control unit 4 is connected to the control end of the high-frequency transformer unit 2. connected, the PWM control unit 4 obtains the feedback signal of the high-frequency transformer unit 2, and controls the output voltage of the ...

Embodiment 2

[0119] Embodiment 2 is basically the same as Embodiment 1, and its difference is:

[0120] The PWM control unit 4 includes a control chip U1, a current limiting resistor R201, a sixth voltage dividing resistor R202, a compensation capacitor C201, a gain resistor R203, a gain capacitor C202, a seventh filter capacitor C203, a timing resistor R204, a timing capacitor C204, a first Fifth filter capacitor C205, second bias resistor R205, fifth resistor R206;

[0121] The FB pin of the control chip U1 is connected to one end of the sixth voltage dividing resistor R202 and one end of the current limiting resistor R201 at the same time, the other end of the sixth voltage dividing resistor R202 is grounded, and the other end of the current limiting resistor R201 One end is connected to the cathode of the fourth diode D13;

[0122] The FB pin of the control chip U1 is connected to one end of the compensation capacitor C201, the other end of the compensation capacitor C201 is connected...

Embodiment 3

[0128] Embodiment 3 is basically the same as Embodiment 2, and its difference is:

[0129] The manual switch 7 is a vehicle ON switch, and the controller 8 is a vehicle controller.

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Abstract

The invention relates to a DC / DC converter conversion control system. The DC / DC converter conversion control system comprises a voltage stabilizing and filtering unit, a high-frequency voltage transformation unit, a feedback circuit, a PWM control unit, a hard wire enable switch and a software enable switch; the voltage stabilizing and filtering unit supplies power to the high-frequency voltage transformation unit and the PWM control unit; the output end of the high-frequency voltage transformation unit is connected with a load; the feedback end of the high-frequency voltage transformation unit is connected with the input end of the feedback circuit; the output end of the feedback circuit is connected with the feedback signal input end of the PWM control unit; the PWM control unit obtains a feedback signal of the high-frequency voltage transformation unit and controls the high-frequency voltage transformation unit to output voltage according to the feedback signal and the demand of the load; and the enable signal output end of the hard wire enable switch and the enable signal output end of the software enable switch are connected with the enable signal input end of the voltage stabilizing and filtering unit at the same time. The system is simple in structure, small in size, safe, reliable and more suitable for integrated design; and two enabling modes are standby for each other, and the system is stable and reliable.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a DC / DC converter conversion control system, which is particularly suitable for power supply of electric vehicle electric vehicles. Background technique [0002] In recent years, under the pressure of energy and environmental protection, new energy vehicles will undoubtedly become the development direction of future automobiles. The role of the DC / DC converter in an electric vehicle is to convert the high-voltage direct current from the vehicle battery pack into different voltages in order to supply power to various electrical devices on the vehicle. The current development trend of new energy vehicles is to adopt an all-in-one controller, and integrate the previous DC-DC converter, PDU distribution box and OBC into a whole charging and distribution module. This setting simplifies the layout and at the same time cut costs. [0003] Due to the integration of the entire charging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/08H02M1/14H02M1/32
CPCH02M7/48H02M3/155
Inventor 肖聪卞晓光徐远肖俊汪斌王金员汪西光苏磊於家华程林顾长治王界行
Owner DONGFENG AUTOMOBILE COMPANY
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