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Power voltage automatic regulating circuit of electric vehicle

A technology of electric vehicles and circuits, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve problems such as changes, and achieve the effect of ensuring changes

Active Publication Date: 2018-04-06
芜湖瑞来电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an automatic regulation circuit for the power voltage of electric vehicles, which has the characteristics of ingenious design and humanized design, and effectively solves the problem of ensuring the output voltage of the power supply when the electric vehicle is running. stability, but also to ensure the change of its power supply

Method used

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  • Power voltage automatic regulating circuit of electric vehicle
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Effect test

Embodiment 1

[0014] Embodiment 1, an electric vehicle power voltage automatic regulation circuit, including a voltage signal acquisition circuit, an amplification and filtering circuit, a reference circuit, and an amplification and adjustment output circuit. The circuit uses the operational amplifier AR1 to amplify the signal input by the voltage signal acquisition circuit, and uses the triode Q1, Q2, capacitor C2 and triode Q3 to form a composite circuit filter. The rear control reference circuit provides the base voltage for the power output port of the electric vehicle, and the other control amplifier adjusts the output circuit to adjust the voltage by using the principle of resistance voltage division to control the output voltage of the power output port;

[0015] The amplification and filtering circuit uses the operational amplifier AR1 to proportionally amplify the signal input by the voltage signal acquisition circuit. When the signal contains clutter, the potential of the signal is...

Embodiment 2

[0016] Embodiment 2, on the basis of Embodiment 1, the voltage signal acquisition circuit selects the voltage transformer P1 model as PT202D to collect the output voltage of the power supply when the electric vehicle is running, and the power supply terminal of the voltage transformer P1 is connected to the power supply +10V. The ground terminal of the voltage transformer P1 is grounded, the output terminal of the voltage transformer P1 is connected to one end of the inductor L1, and the other end of the inductor L1 is connected to one end of the capacitor C1.

Embodiment 3

[0017] Embodiment 3, on the basis of Embodiment 1, the reference circuit uses the triode Q5 to receive the signal output by the amplifying and filtering circuit. When the electric vehicle starts normally, the signal output by the amplifying and filtering circuit can turn on the triode Q5. At this time, the power supply +200V flows into the output port of the power supply after being divided by the transistor Q5 and the resistor R10, which is to supply power for electric vehicles. The voltage received by the output port of the power supply is +200V from the power supply plus +100V from the input voltage signal of the amplifying and filtering circuit, which is actually an electric vehicle. The power supply takes +200V as an example. When the electric vehicle changes speed during driving, the voltage signal collected by the voltage signal acquisition circuit becomes abnormally large, the triode Q2 and Q1 are turned on, and the operational amplifier AR2 collects the signal of the vo...

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Abstract

The invention discloses a power voltage automatic regulating circuit of an electric vehicle. The circuit comprises a voltage signal acquisition circuit, an amplification filter circuit, a reference circuit, and an amplification adjusting output circuit. The voltage signal acquisition circuit acquires output voltage of a power supply when an electric vehicle runs. Through the amplification filter circuit, a signal input by the voltage signal acquisition circuit is amplified by an operational amplifier AR1, and audions Q1 and Q2, and a capacitor C2, and an audion Q3 form a composite circuit to filter. Signals output by the amplification filter circuit are divided in two paths, one path of signals are amplified by the operational amplifier AR1 and then control the reference circuit to providereference voltage for a power output port of an electric vehicle, and the other path of signals control the amplification adjusting output circuit to use a resistor voltage division principle to adjust voltage, and control output voltage of the power output port. The power voltage automatic regulating circuit achieves an effect of regulating voltage, and ensures stability of supply voltage.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an automatic regulation circuit for power voltage of electric vehicles. Background technique [0002] Electric vehicles are a major trend in the development of future vehicles. Due to the gradual depletion of energy and the trend of environmental protection, traditional vehicles urgently need the introduction of new energy sources. Electric vehicles are environmentally friendly vehicles, but compared with traditional vehicles, their power output The problem has always been the weakness. The speed of electric vehicles changes in real time during driving, so the power supply of electric vehicles also needs to change in real time. The power output must not only ensure the stability of the output voltage of the power supply, but also ensure the change of its power supply. The current Electric vehicles can only stably adjust the voltage of the power supply within a certain r...

Claims

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Application Information

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IPC IPC(8): G05F1/46H03H11/12
CPCG05F1/461H03H11/12
Inventor 杨欣褚慧
Owner 芜湖瑞来电子科技有限公司