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Title:
HIGH-VOLTAGE INTERLOCK DETECTION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/068544
Kind Code:
A1
Abstract:
A high-voltage interlock detection circuit, comprising: a high-voltage interlock loop having a loop input terminal and a loop output terminal; and a high-voltage interlock circuit, comprising a monitoring chip (U11) and a filter capacitor (C11) and having a pulse width modulation (PWM) signal output terminal and a signal back-check input terminal, the PWM signal output terminal being connected to the loop input terminal by means of a first current-limiting resistor (R11), and the loop output terminal being connected to the signal back-check input terminal by means of a second current-limiting resistor (R12). A PWM signal output from the PWM signal output terminal is returned back to the signal back-check input terminal by means of the high-voltage interlock loop, and is filtered by the filter capacitor (C11), and thereafter enters the monitoring chip (U11). Simplifying the high-voltage interlock detection circuit reduces occupation of MCU computing resources and reduces the requirements for MCU hardware port resources.

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Inventors:
AO XIANG (CN)
Application Number:
PCT/CN2017/093114
Publication Date:
April 19, 2018
Filing Date:
July 17, 2017
Export Citation:
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Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
G01R31/50
Foreign References:
CN106646076A2017-05-10
CN105313700A2016-02-10
CN104569656A2015-04-29
CN104377684A2015-02-25
CN105403784A2016-03-16
US7084361B12006-08-01
Attorney, Agent or Firm:
UNI-INTEL PATENT AND TRADEMARK LAW FIRM (CN)
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