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On-line state monitoring method for starting power supply of electric vehicle

A technology for starting the power supply and electric vehicles. It is applied to vehicle components, circuits or fluid pipelines, signal devices, etc. It can solve the problems of low-voltage control system shutdown and hidden safety hazards in normal vehicle operation, eliminate the shutdown of the low-voltage control system, and improve the overall performance. The effect of car safety

Pending Publication Date: 2018-02-23
OPTIMUM BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the vehicle is running, if the DC / DC fails and its output is turned off, the starting power supply can temporarily provide low-voltage power to the vehicle control system. However, if the starting power supply is in an abnormal state at this time, such as a disconnected state, it will cause The low-voltage control system is all shut down, which brings great safety hazards to the normal operation of the vehicle

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  • On-line state monitoring method for starting power supply of electric vehicle

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Embodiment Construction

[0013] In order to make the purpose, technical solution and beneficial technical effect of the invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0014] The invention provides an online state monitoring method for the starting power supply of an electric vehicle, the principle of which is: under normal conditions, after the electric vehicle is started by the starting power supply, the working voltage required by the vehicle control system is a low voltage output from a DC / DC (DC Converter) When the DC / DC fails to turn off the output, the starting power supply can temporarily provide the low-voltage power; if the starting power supply is in an abnormal state, the starting power supply cannot replace t...

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Abstract

The invention provides an online state monitoring method for the starting power supply of an electric vehicle. After the electric vehicle is started by the starting power supply, the working voltage required by the vehicle control system is provided by DC / DC or the low-voltage output of the starting power supply, and the starting power supply Provide the vehicle control system with the low-voltage power only when the DC / DC turns off the output; make the DC / DC turn off the output at regular intervals and detect the low-voltage power. If the voltage of the low-voltage power is lower than the set lower limit, it is determined that the starting power supply is in an abnormal state.

Description

【Technical field】 [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an online state monitoring method for starting power supplies of electric vehicles. 【Background technique】 [0002] In the prior art, after the vehicle is started by the starter power supply, the DC / DC starts to work, and the low voltage output by the DC / DC can provide the working voltage required by the vehicle control system and can also charge the starter power supply. When the vehicle is running, if the DC / DC fails and its output is turned off, the starting power supply can temporarily provide low-voltage power to the vehicle control system. However, if the starting power supply is in an abnormal state at this time, such as a disconnected state, it will cause The low-voltage control system is all shut down, which brings great safety hazards to the normal operation of the vehicle. In view of this, it is necessary to provide an online state monitoring m...

Claims

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Application Information

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IPC IPC(8): B60R16/02B60Q9/00
CPCB60R16/02B60Q9/00
Inventor 孔银龙李佳倩
Owner OPTIMUM BATTERY CO LTD