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Vehicle-mounted charger and charging method thereof

An on-board charger and charging method technology, applied in electric vehicle charging technology, charging stations, electric vehicles, etc., can solve the problems of damage to PFC, failure to distinguish lightning surge and real input overcurrent, etc., to avoid hardware damage, avoid Interruption or stop of charging, the effect of improving robustness

Active Publication Date: 2021-07-30
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Second: There is no distinction between lightning surges and real input overcurrent, causing PFC to enter an infinite loop of overcurrent and restart, which will damage PFC in the long run

Method used

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  • Vehicle-mounted charger and charging method thereof
  • Vehicle-mounted charger and charging method thereof
  • Vehicle-mounted charger and charging method thereof

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Embodiment Construction

[0052] The on-board charger and its charging method proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0053] refer to figure 1 , shows a schematic structural diagram of a conventional on-board charger, the on-board charger is composed of a PFC module (power factor correction), a DCDC module (power conversion), a driver chip, a latch module and an MCU, and the latch module includes a NOR gates and latches. After a fault occurs, the output of the driver chip is blocked through the NOR gate and the latch, so that the on-board charger stops working. refer to ...

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PUM

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Abstract

The invention provides a vehicle-mounted charger and a charging method thereof, and the charging method of the vehicle-mounted charger comprises the steps: capturing an input signal through a latch module and a control module; when the input signal comprises an overcurrent signal, the control module performs software diagnosis on the overcurrent signal so as to identify a lightning surge working condition and output a reset signal; the latch module resets parameters of the vehicle-mounted charger according to the reset signal, so that the PFC driving module and the DCDC driving module output a PFC driving signal and a DCDC driving signal; and the PFC module and the DCDC module are driven to work through the PFC driving signal and the DCDC driving signal. Through the charging method of the vehicle-mounted charger, the lightning stroke surge working condition and the non-lightning stroke surge working condition can be recognized, and the vehicle-mounted charger can continuously charge the power battery under the lightning stroke surge working condition and the non-lightning stroke surge working condition.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an on-board charger and a charging method thereof. Background technique [0002] With the rapid development and wider popularization of new energy vehicles, more and more electric vehicles or hybrid vehicles appear in the lives of ordinary consumers. On-board chargers are an essential part of electric vehicles / hybrid vehicles. The on-board charger converts the AC signal of the power grid into a DC signal to charge the power battery, but in some thunderstorm weather (that is, lightning surge conditions), the on-board charger may not be able to charge the power battery, or cause charging interruption, affecting The use of electric vehicles requires special treatment of lightning surges to meet the requirements of relevant regulations and improve the charging adaptability of on-board chargers. [0003] When the AC input side of the on-board charger is struck by a lightning surg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/00B60L53/60
CPCB60L53/00B60L53/60Y02T10/70Y02T10/7072Y02T90/12Y02T90/14
Inventor 李生超纪晓泳施向前张攀唐志俊
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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