A digital vehicle power supply output soft start method

An on-board power supply and soft-start technology, which is applied in the field of on-board electronics to achieve the effects of improving operating efficiency, reducing volume, and reducing manufacturing costs.

Active Publication Date: 2020-08-21
南京桐润新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a digital vehicle power supply output soft start method, which solves the technical problem of vehicle power supply soft start

Method used

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  • A digital vehicle power supply output soft start method
  • A digital vehicle power supply output soft start method
  • A digital vehicle power supply output soft start method

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Experimental program
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Embodiment Construction

[0030] Such as Figure 2-Figure 4 A digital vehicle power supply output soft start method shown includes the following steps:

[0031] Step 1: Establish the main circuit of the vehicle power supply and the control unit of the vehicle power supply. The main circuit of the vehicle power supply includes a phase-shifted full-bridge circuit;

[0032] The vehicle power supply control unit includes a control circuit, a sampling and communication circuit, a protection circuit and a drive circuit. The control circuit includes a main control chip and its peripheral circuits. The sampling and communication circuit includes an ADC digital-to-analog conversion module and a communication module. The protection circuit includes an overcurrent The protection circuit, the drive circuit is used to provide 4 PWM drive signals to the phase-shifted full-bridge circuit;

[0033] The functions of the GPIO pin of the main control chip include: as a common GPIO port to realize the on-off control of t...

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PUM

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Abstract

The invention discloses a digital onboard power supply output soft start method and belongs to the field of onboard electronic technology. The method comprises establishing an onboard power supply main circuit and an onboard power supply control unit, initializing a configuration function, completing a performance function, comparing a soft start counter with a set voltage reference value in orderto select either of the soft start counter and the set voltage reference value as a voltage external-loop voltage reference to be substituted into the voltage outer-loop PID calculation, thereby realizing the soft start of the onboard power supply, solving the technical problem of the soft start of the onboard power supply, and eliminating the defect that the onboard power supply, which is a switching power supply, has over-high and sharply increased output-end voltage so as to cause an output-end capacitor to be unable to sustain the excessive surge current. The method avoids the use of a soft start circuit, thereby reducing the volume of the onboard power supply and the manufacturing cost, avoiding the power consumption of the soft start circuit, improving the operating efficiency of the onboard power supply and realizing the controllable soft start time.

Description

technical field [0001] The invention belongs to the technical field of vehicle electronics, and in particular relates to a digital vehicle power supply output soft start method. Background technique [0002] In order to alleviate energy consumption and environmental problems and realize the green and sustainable development of the automobile industry, the development of electric vehicles has become a common choice and research focus of the industry. An electric vehicle (BEV) refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. [0003] The vehicle power supply is a switching power supply. The soft start circuit of the switching power supply usually refers to the circuit that is set in the input circuit of the switching power supply to prevent the inrush current. Most of the input circuits of switching power supplies use rectification plus capacitor filter ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/36
CPCH02M1/36
Inventor 崔熠凡伍俊明陈歌
Owner 南京桐润新能源有限公司
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