Title:
POWER SUPPLY DEVICE, AND VEHICLE AND POWER SUPPLY METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/134173
Kind Code:
A1
Abstract:
A power supply device, and a vehicle and a power supply method therefor. The vehicle may comprise: an in-vehicle load device (300), a storage battery (400) and a power supply device (200), the power supply device (200) comprising: a DC-DC circuit (201) and a switch (202), wherein an output end of the DC-DC circuit (201) is coupled to an end of the switch (202) and serves as a first power supply port A of the power supply device (200), and the other end of the switch (202) serves as a second power supply port B of the power supply device (200); and the first power supply port A is used to be coupled to a first load in the in-vehicle load device (300), and the second power supply port B is used to be respectively coupled to a second load in the in-vehicle load device (300) and the storage battery (400). The state of the switch (202) is controlled, such that it can be ensured that power is supplied to all important loads in the case of any single fault of the in-vehicle load device (300) being short-circuited, the DC-DC circuit (201) having a fault and the storage battery (400) having a fault and failing. Important low-voltage loads of a vehicle can still ensure the reliability of backup power supply, thereby improving the reliability of redundant power supply by the low-voltage loads, and ensuring the safety of the vehicle.
Inventors:
FENG NINGBO (CN)
CHEN BING (CN)
WANG TIANYU (CN)
WANG QUANWU (CN)
DOU JIQING (CN)
CHEN BING (CN)
WANG TIANYU (CN)
WANG QUANWU (CN)
DOU JIQING (CN)
Application Number:
PCT/CN2022/114951
Publication Date:
July 20, 2023
Filing Date:
August 25, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
B60L50/60; B60L3/00; B60L53/14; H02J7/00
Domestic Patent References:
| WO2014079603A2 | 2014-05-30 |
Foreign References:
| CN114454733A | 2022-05-10 | |||
| JP2007336631A | 2007-12-27 | |||
| CN111661030A | 2020-09-15 | |||
| CN112622870A | 2021-04-09 | |||
| CN110103718A | 2019-08-09 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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