Title:
HYBRID ELECTRIC VEHICLE AND POWER SYSTEM THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/177359
Kind Code:
A1
Abstract:
A hybrid electric vehicle and a power system thereof. The power system comprises: an engine (1) for outputting power to wheels (700) of the hybrid electric vehicle by means of a clutch (7); a power motor (2) for outputting driving force to the wheels (700) of the hybrid electric vehicle; a power battery (3) for powering the power motor (2); a DC-DC converter (4); a secondary motor (5) connected to the engine (1), the power motor (2), the DC-DC converter (4), and the power battery (3) separately; and a voltage stabilizing circuit (6) connected between the secondary motor (5) and the DC-DC converter (4) and used for performing voltage stabilization on a direct current output to the DC-DC converter (4) during power generation of the secondary motor (5). By means of the hybrid electric vehicle and the power system, the low-speed electric balance and low-speed smoothness of the vehicle can be maintained, and the input voltage of the DC-DC converter (4) can remain stable so as to ensure normal operation of the DC-DC converter (4).
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Inventors:
WANG CHUNSHENG (CN)
LI KAIQI (CN)
ZHANG WEI (CN)
LI KAIQI (CN)
ZHANG WEI (CN)
Application Number:
PCT/CN2018/081046
Publication Date:
October 04, 2018
Filing Date:
March 29, 2018
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
B60L50/10; B60K6/00; B60L50/15; B60L50/16; B60W10/00; B60W20/00
Domestic Patent References:
| WO2000032438A1 | 2000-06-08 |
Foreign References:
| CN204432353U | 2015-07-01 | |||
| CN101774379A | 2010-07-14 | |||
| CN104627171A | 2015-05-20 | |||
| US20090237019A1 | 2009-09-24 | |||
| JP2000253507A | 2000-09-14 |
Other References:
See also references of EP 3604023A4
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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