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Patent Searching and Data


Title:
DCDC CONVERTER, VEHICLE-MOUNTED CHARGER AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/206231
Kind Code:
A1
Abstract:
Disclosed are a DCDC converter, a vehicle-mounted charger and an electric vehicle. The DCDC converter comprises a first three-phase bridge module, a resonance module, a second three-phase bridge module, and a controller. The first three-phase bridge module is used to adjust a frequency of an input signal when a charge operation is performed. The resonance module is used to perform resonance processing on an output signal of a first adjustment module when the charge operation is performed, and to perform resonance processing on an output signal of a second adjustment module when a discharge operation is performed. The second three-phase bridge module is used to adjust a frequency of an output signal of a battery module when the discharge operation is performed. The controller is used to control, in a light load mode, the first three-phase bridge module to be switched to two phase leg input or one phase leg input and the second three-phase bridge module to be switched to two phase leg output when the charge operation is performed, and to control the second three-phase bridge module to be switched to two phase leg input or one phase leg input and the first three-phase bridge module to be switched to three phase leg output when the discharge operation is performed. The above arrangement can reduce switching loss in a light load mode.

Inventors:
ZHANG XIAOBIN (CN)
Application Number:
PCT/CN2019/084329
Publication Date:
October 31, 2019
Filing Date:
April 25, 2019
Export Citation:
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Assignee:
BYD CO LTD (CN)
International Classes:
H02M3/335
Foreign References:
CN105871215A2016-08-17
CN203851025U2014-09-24
CN104506039A2015-04-08
CN202218161U2012-05-09
DE102016006549A12017-11-30
Other References:
See also references of EP 3787169A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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