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Control method for high voltage electricity safety protection of passenger vehicle

A control method and safety protection technology, applied in the direction of electrical devices, electric vehicles, vehicle components, etc., can solve problems such as system failures that cannot be handled, cannot be reflected in time, on-off and state control methods are not perfect, etc. Fast dynamic response, stable work, and the effect of meeting real-time control requirements

Active Publication Date: 2012-06-20
苏州海格电控股份有限公司
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Problems solved by technology

[0003] However, with the increasing demand for high-voltage electricity when driving, the current on-off and state control methods of the high-voltage electrical system are not perfect, and cannot reflect the faults in the system in time, and cannot be ordered according to the degree of fault. Therefore, the safety of vehicles and personnel cannot be well guaranteed

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  • Control method for high voltage electricity safety protection of passenger vehicle
  • Control method for high voltage electricity safety protection of passenger vehicle
  • Control method for high voltage electricity safety protection of passenger vehicle

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

[0022] see figure 1 , the embodiment of the present invention includes: power-on self-test, high-voltage switch-on control, high-voltage circuit state detection and high-voltage power-off control, the powertrain controller supplies power to the high-voltage power management controller after completing the self-test, and when the high voltage When the level state of the low-voltage power supply pin of the piezoelectric management controller is saturated, its self-checking process starts, and at the same time, it performs insulation monitoring, grounding monitoring, interlock loop monitoring and system voltage monitoring on the high-voltage circuit...

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Abstract

The invention discloses a control method for high voltage electricity safety protection of a passenger vehicle. The control method comprises the following working processes of: power-on self-test, high voltage switch-on control, high voltage circuit state detection and high voltage electricity switch-off control; and a high voltage circuit is detected and controlled. In the mode, high voltage faults such as a high voltage circuit insulation fault, a high voltage interlocking fault, a grounding fault, a pre-charging fault and the like can be monitored by the control method; and the control method has the advantages that: working stability, accuracy and reliability are achieved, dynamic response speed is high, and the requirement of real-time control of a new energy passenger vehicle is well met.

Description

technical field [0001] The invention relates to the field of high-voltage electric safety of new energy passenger cars, in particular to a control method for high-voltage electric safety protection of passenger cars. Background technique [0002] The existing vehicle high-voltage circuit safety protection measures are equipped with manual high-voltage switches, which are used to disconnect high voltage during maintenance and inspection; automatic circuit breakers are used to automatically disconnect high-voltage electricity when the current is too large or short-circuited, and can be manually closed after disconnection. ; Fuse for short-circuit protection and severe overload protection; pre-charge function, in order to prevent high-voltage electrical shocks. [0003] However, as the demand for high-voltage electricity is getting higher and higher, the current on-off and state control methods of the high-voltage electrical system are not perfect. Therefore, the safety of veh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00
Inventor 魏长河
Owner 苏州海格电控股份有限公司
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