Title:
LOW-VOLTAGE REDUNDANT POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/077289
Kind Code:
A1
Abstract:
A low-voltage redundant power supply system, comprising: a high-voltage battery pack used for providing a first voltage and comprising a plurality of power supply units which are sequentially connected in series, a power supply unit being at least one battery in the high-voltage battery pack or an equivalent power supply formed by connecting a plurality of batteries in series/in parallel; and a relay array, relays in the relay array being connected to the power supply units in the high-voltage battery pack according to a set connection relationship. In at least one on-off state combination mode of the relay array, at least one power supply unit in the high-voltage battery pack provides a second voltage by means of time division multiplexing to supply power to a low-voltage load; the first voltage is higher than the second voltage. The system can solve the problems that traditional low-voltage power supply solutions cannot realize active balancing of a battery and cannot realize a redundant power supply function in respect of a low-voltage load, thereby improving power supply reliability, and avoiding power derating of a high-voltage power system caused by SOC imbalance of a battery.
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Inventors:
WANG HUI (CN)
YANG LULU (CN)
SUN JIAN (CN)
SONG TIANZHU (CN)
YANG LULU (CN)
SUN JIAN (CN)
SONG TIANZHU (CN)
Application Number:
PCT/CN2020/120961
Publication Date:
April 21, 2022
Filing Date:
October 14, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J7/00; B60R16/033
Foreign References:
| US20200079232A1 | 2020-03-12 | |||
| CN109624714A | 2019-04-16 | |||
| CN105934360A | 2016-09-07 | |||
| CN108340856A | 2018-07-31 | |||
| JP2010284064A | 2010-12-16 |
Other References:
See also references of EP 4210192A4
Attorney, Agent or Firm:
E-TONE INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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