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Patent Searching and Data


Title:
ELECTRIC VEHICLE, AND CONTROL METHOD AND SYSTEM FOR PTC ELECTRIC HEATER OF ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/018834
Kind Code:
A1
Abstract:
A control method for a PTC electric heater of an electric vehicle, comprising the following steps: detecting working currents of a PTC electric heater; sampling the working currents to obtain current sampling values, and performing integral calculation on the current sampling value of each sampling period to obtain calculated power of the PTC electric heater; determining, within each switching period of a power switching transistor, whether the calculated power reaches target power of the PTC electric heater; if the calculated power reaches the target power of the PTC electric heater, controlling the PTC electric heater to stop heating by controlling the power switching transistor so that the heating amount of the PTC electric heater within each switching period keeps consistent with the heating amount corresponding to the target power. Also disclosed are a control system for a PTC electric heater of an electric vehicle, and an electric vehicle.

Inventors:
LI QI (CN)
Application Number:
PCT/CN2016/111150
Publication Date:
February 01, 2018
Filing Date:
December 20, 2016
Export Citation:
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Assignee:
BEIJING ELECTRIC VEHICLE CO LTD (CN)
International Classes:
B60H1/22; F24H3/04; H05B3/14
Foreign References:
CN103597907A2014-02-19
CN105180345A2015-12-23
CN104964396A2015-10-07
CN102080866A2011-06-01
JP2010091155A2010-04-22
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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