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A kind of active discharge control circuit and automobile

A technology of discharge control and discharge control signal, which is applied in the field of automobiles and can solve problems such as poor safety

Active Publication Date: 2019-11-12
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide an active discharge control circuit and an automobile, which solves the problem of poor safety in the current method for actively discharging the MCU of an electric vehicle

Method used

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  • A kind of active discharge control circuit and automobile
  • A kind of active discharge control circuit and automobile
  • A kind of active discharge control circuit and automobile

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Embodiment Construction

[0044] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0045] like figure 1 As shown, the embodiment of the present invention provides an active discharge control circuit, including a charge control sub-circuit 1, an energy storage sub-circuit 2, a discharge control sub-circuit 3 and a discharge sub-circuit 4, wherein,

[0046] The output terminal of the charging control subcircuit 1 is connected to the energy storage subcircuit 2, and the charging control subcircuit 1 is used to receive a discharge signal through its input terminal, and after receiving the discharge signal, through the output The terminal provides a charging signal for the input terminal of the energy storage sub-circuit 2, so as to charge the energy storage sub-circuit 2, thereby increasing the voltage of the output terminal of the energy ...

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Abstract

The present invention provides an active discharge control circuit and an automobile, including a charge control subcircuit, an energy storage subcircuit, a discharge control subcircuit and a discharge subcircuit, wherein the output terminal of the charge control subcircuit is connected to the energy storage subcircuit connected, the charge control subcircuit is used to receive a discharge signal through its input terminal, and provide a charge signal to the input terminal of the energy storage subcircuit through the output terminal after receiving the discharge signal, so as to charge the The energy storage subcircuit is charged to increase the voltage at the output end of the energy storage subcircuit; the discharge control subcircuit is connected to the output end of the energy storage subcircuit for the voltage at the output end of the energy storage subcircuit Outputting a discharge control signal to the discharge sub-circuit after it is greater than a predetermined reference voltage; the discharge sub-circuit is used to control the device to be discharged to discharge after receiving the discharge control signal. In this way, the safety of the active discharge control circuit can be improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an active discharge control circuit and an automobile. Background technique [0002] In order to ensure personal safety, the Microcontroller Unit (MCU) needs to be actively discharged when the electric vehicle is parked and powered off, and the national standard requires that the charge stored in the DC_LINK of the motor controller be completely discharged within 3ms. freed. At present, most of the industry uses software to control the insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, referred to as IGBT) switch to complete the discharge through the motor winding. However, using this method requires precise control by the software, otherwise there is a risk of burning out the IGBTs, in addition to causing the motor to heat up. Therefore, the current method for actively discharging the MCU of the electric vehicle has poor safety. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/32
CPCH02M1/32H02M1/322
Inventor 武盼盼
Owner BEIJING ELECTRIC VEHICLE
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