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A starting signal acquisition circuit and acquisition method

A technology for obtaining circuits and starting signals, which is applied in the field of communication and can solve problems such as the failure of hybrid vehicles to start normally

Active Publication Date: 2019-03-08
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a starting signal acquisition circuit and acquisition method to solve the problem that the hybrid vehicle cannot be started normally when the high-voltage power battery leaks or the motor is damaged.

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  • A starting signal acquisition circuit and acquisition method
  • A starting signal acquisition circuit and acquisition method

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] An embodiment of the present invention provides a startup signal acquisition circuit, referring to figure 1 ,include:

[0034] first relay 103;

[0035] One end of the coil of the first relay 103 is connected to the positive pole Batt+ of the low-voltage storage battery, the other end of the coil of the first relay 103 is connected to the low-side drive pin of the HCU 101, and the movable contact 1 of the first relay 103 is connected to the START termi...

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Abstract

The invention provides a starting signal obtaining circuit and method. According to the starting signal obtaining circuit and method, when high-voltage power battery leakage or motor damage occurs on a hybrid power vehicle, by controlling the low-side driving pins of an HCU (hydraulic control unit) to be electrically neutral, the coil of a first relay is not electrified, and the movable contact of the first relay is in contact with the first fixed contact of the first relay, namely, the START end of a key is connected with the ECU; at the moment, when detecting that the key is at the START end, namely, receiving a start signal, the ECU can control the hybrid power vehicle to start. Therefore, the problem that the hybrid power vehicle fails to start when high-voltage power battery leakage or motor damage occurs can be solved.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to an acquisition circuit and an acquisition method of a starting signal. Background technique [0002] With the continuous development of technology, the utilization rate of hybrid vehicles is increasing year by year. A hybrid vehicle is a vehicle that uses two or more power sources. [0003] In the prior art, it is judged which way to start the hybrid vehicle according to whether the hybrid controller HCU is faulty. When the HCU is not faulty, the start signal will be sent to the HCU, and the HCU controls the hybrid vehicle to start, that is, the motor is used to start the engine. Working mode, when the HCU fails, the start signal will be sent to the electronic control unit ECU, and the ECU controls the start of the hybrid vehicle, that is, the working mode of using the starter to drive the engine. [0004] When the high-voltage power battery leaks or the motor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/50
CPCB60W20/50
Inventor 王德军徐守军娄丙民车文超李宗吉
Owner WEICHAI POWER CO LTD
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