Title:
SHORT CIRCUIT DETECTING APPARATUS, SHORT CIRCUIT DETECTING METHOD, AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/085893
Kind Code:
A1
Abstract:
A short circuit detecting apparatus for an electric vehicle including a battery and a chassis comprises: a battery voltage sensor for measuring a battery voltage; a first series circuit including a first resistor and a first switch connected in series between a first node connected to a negative electrode terminal of the battery and a second node connectable to the chassis; a second series circuit including a second resistor and a second switch connected in series between the second node and a third node connected to a positive electrode terminal; a voltage divider connected to the first series circuit in parallel and including a third resistor and a fourth resistor connected in series via a fourth node; an analog-digital converter configured to generate a digital signal indicating a voltage between the first node and the fourth node; and a control unit. The control unit determines a short circuit of the battery on the basis of at least one detection voltage measured by the analog-digital converter in a short circuit detecting mode.
Inventors:
HAM SANG-HYEOK (KR)
Application Number:
PCT/KR2020/013950
Publication Date:
May 06, 2021
Filing Date:
October 13, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
B60L3/00; B60L53/20; B60L58/19; G01R27/02; G01R31/00; G01R31/50
Foreign References:
| US20130300430A1 | 2013-11-14 | |||
| KR20130110066A | 2013-10-08 | |||
| US20190064280A1 | 2019-02-28 | |||
| KR20200084517A | 2020-07-13 | |||
| KR20190138010A | 2019-12-12 | |||
| KR20190138012A | 2019-12-12 | |||
| KR20200111225A | 2020-09-28 |
Other References:
SHEN, YONGPENG ET AL.: "Design of Online Detection System for Insulation Resistanc e of Electric Vehicle Based on Unbalanced Bridge", 2019 IEEE INNOVATIVE S MART GRID TECHNOLOGIES - ASIA (ISGT ASIA, 21 May 2019 (2019-05-21), pages 537 - 542, XP033638780, Retrieved from the Internet [retrieved on 20201221], DOI: 10.1109/ISGT-Asia.2019.8881809
See also references of EP 3981637A4
See also references of EP 3981637A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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