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Converter

A conversion device and a technology for the end of conversion, which are applied to the conversion device of output power, the conversion of DC power input to DC power output, instruments, etc., can solve problems such as large power loss, and achieve the effect of small power loss and prevention of reverse current.

Active Publication Date: 2015-12-09
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the power loss due to the voltage drop of the parasitic diode is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0039] figure 1 It is a circuit diagram of the conversion device 1 in Embodiment 1. The conversion device 1 is properly mounted on the vehicle, and is connected to the positive and negative terminals of the battery 3 and the positive and negative terminals of the storage battery 4 , respectively. The conversion device 1 converts the voltage applied by the battery 3 by boosting and reducing the voltage, and applies the converted voltage to the storage battery 4 . Thus, the storage battery 4 is charged.

[0040] Conversion device 1 has N channel type FET (FieldEffectTransistor, Field Effect Transistor) 11, 12, 13, 14, differential amplifier 15, feedback circuit 16, control unit 17, inverter 18, 19, delayer 20, 21, 22, 23, AND circuit 24, capacitor C1, diodes D1, D2, D3, D4, coil L1 and resistor R1.

[0041] The drain of the FET11 is connected to the positive terminal of the battery 3 , and the source of the FET12 is connected to the negative terminal of the battery 3 . The s...

Embodiment approach 2

[0128] Figure 5 It is a circuit diagram of the conversion device 5 in Embodiment 2. Similar to the converter device 1 in the first embodiment, the converter device 5 is connected to the positive terminal and the negative terminal of the battery 3 and the positive terminal and the negative terminal of the storage battery 4 , respectively. The conversion device 5 converts the voltage applied from the battery 3 and applies the converted voltage to the storage battery 4 like the conversion device 1 in the first embodiment. Also, the conversion device 5 converts the voltage applied from the storage battery 4 and applies the converted voltage to the battery 3 .

[0129] Hereinafter, regarding the conversion device 5 in the second embodiment, the points different from the conversion device 1 in the first embodiment will be described. Components of the second embodiment that are the same as those of the first embodiment are denoted by the same reference numerals, and detailed descr...

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Abstract

A converter is provided which is capable of avoiding adverse flow of an electric current from an output side of a voltage to an inductor and having a small loss in the electric power. In a converter 1, the source of an FET 11 and the drain of an FET 12 are connected to one end of an inductor L1 while the source of an FET 13 and the drain of an FET 14 are connected to the other end of the inductor L1. The sources of the FETs 12 and 14 are connected to each other. The cathode and the anode of a diode D3 are connected respectively to the drain and the source of the FET 13. The FETs 11, 12, 13, and 14 serve as switches. Then, the FETs 11, 12, 13, and 14 are turned ON / OFF individually so that a voltage applied by a battery 3 is converted. When voltage conversion is to be terminated, OFF-state of the FET 13 is maintained. Then, during the time that the OFF-state of the FET 13 is maintained, an electric current is reduced that flows from the drain of the FET 13 through a storage battery 4 to the source of the FET 14.

Description

technical field [0001] The present invention relates to a conversion device that steps up and down an applied voltage and converts the voltage. Background technique [0002] Currently, vehicles equipped with batteries in addition to batteries are widespread. Such a vehicle is equipped with a conversion device that converts the output voltage by stepping up and down the output voltage of the battery, and applies the converted voltage to the battery. [0003] As a conventional switching device, there is a switching device having: a coil; a first switch and a second switch each having one end connected to one end of the coil; a third switch having one end connected to the other end of the coil; 4 switches, one end and the other end of which are connected to the other ends of the coil and the second switch respectively, by turning on / off the first switch, the second switch, the third switch, and the fourth switch, the first switch and the second switch The voltage between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02M3/158
CPCH02M1/38H02M1/36H02M3/1582H02M3/158
Inventor 西村次夫
Owner AUTONETWORKS TECH LTD