Title:
ELECTRIC VEHICLE, AND METHOD AND APPARATUS FOR CALCULATING STATE OF ENERGY (SOE) OF POWER BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/184845
Kind Code:
A1
Abstract:
Provided are an electric vehicle, and a method and apparatus for calculating the state of energy (SOE) of a power battery. The method comprises the following steps: acquiring a reference curve of an open-circuit voltage (OCV) of a power battery-battery capacity Q (S101); acquiring the OCV of the power battery (S102); acquiring the current remaining available capacity of the power battery according to the OCV of the power battery and the reference curve of the OCV-Q (S103); and calculating the SOE of the power battery according to the current remaining available capacity and the OCV of the power battery (S104). According to the method for calculating the state of energy (SOE) of a power battery: a reference curve of OCV-Q is first acquired and then the OCV is acquired; then, a remaining capacity Q remaining of a power battery is obtained according to the OCV and the reference curve of OCV-Q; and finally, the SOE is calculated according to Q remaining and the OCV.
Inventors:
DENG LINWANG (CN)
FENG TIANYU (CN)
LIN SIQI (CN)
LV CHUN (CN)
YANG ZIHUA (CN)
FENG TIANYU (CN)
LIN SIQI (CN)
LV CHUN (CN)
YANG ZIHUA (CN)
Application Number:
PCT/CN2019/079450
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
G01R31/36
Domestic Patent References:
| WO2013175006A1 | 2013-11-28 |
Foreign References:
| CN107238803A | 2017-10-10 | |||
| CN107024665A | 2017-08-08 | |||
| CN109507599A | 2019-03-22 | |||
| EP1231475A2 | 2002-08-14 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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