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Driving circuit of brushless controller power valve

A driving circuit and power tube technology, applied in the direction of power amplifiers, etc., to avoid short circuit, solve commutation freewheeling, and meet power requirements

Inactive Publication Date: 2009-08-05
TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a drive circuit for the power tube on the high-power controller, and to solve the problem of commutation and freewheeling.

Method used

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  • Driving circuit of brushless controller power valve

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Experimental program
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Effect test

Embodiment Construction

[0014] Embodiments of the present invention will be described below in conjunction with the specific circuit diagrams given in the accompanying drawings.

[0015] see figure 1 ,

[0016] The driving circuit of the power tube of the brushless controller is set between the upper power tube and the lower power tube, including a logic OR gate (U1A), a logic AND gate (U2A), a first transistor (Q1), and a second transistor (Q2), the third transistor (Q3), which is connected in the following way:

[0017] The first input terminal (1) of the logic OR gate (U1A) is respectively connected to the common terminal of the seventh capacitor (C7) and the first resistor (R1), and the second input terminal (2) of the logic OR gate (U1A) is connected to One end of the second resistor (R2), the node between the second resistor (R2) and the third resistor (R3) is connected to one end of the first capacitor (C1), and the output terminal (3) of the logic OR gate (U1A) is connected to It is the ot...

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Abstract

The invention belongs to the field of electric vehicle control equipment, and is especially applied to the drive circuit of a power tube in a brushless controller of an electric vehicle. The drive circuit of the power tube of the brushless controller of the present invention is arranged between the upper power tube and the lower power tube. Including a logical OR gate U1A, a logical AND gate U2A, the first transistor Q1, the second transistor Q2, and the third transistor Q3, the effect of the present invention not only uses two mutually delayed pulse signals to ensure that the upper and lower tubes Not conducting at the same time, it avoids the short circuit of the power supply, and solves the problem of increased driving capacity once it is stable; it also meets the power requirements of high-power products, and solves the problem of commutation freewheeling.

Description

technical field [0001] The invention belongs to the field of electric vehicle control equipment, in particular, it is applied to a power tube drive circuit in a brushless controller of an electric vehicle. Background technique [0002] Now the mainstream electric vehicles on the market are gradually developing towards high power. The power tube drive circuit used in commonly used low-power controllers can no longer meet the needs of high-power products. The specific performance is as follows: [0003] 1. As the power of the electric vehicle controller increases, the number of power tubes increases, and the original drive circuit cannot meet the needs of high-power products. [0004] 2. The original drive circuit cannot meet the needs of high-power products, and there is a problem of insufficient drive of the power tube of high-power products, which leads to the failure of the product to achieve the expected power. [0005] Among the above-mentioned technical problems, the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/20
Inventor 杨思平赵建虎蒋平
Owner TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD