Title:
CIRCUIT FOR PREVENTING LOSS OF BATTERY VOLTAGE ON OUTPUT SIDE OF VEHICLE-MOUNTED DCDC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2022/262295
Kind Code:
A1
Abstract:
The present invention provides a circuit for preventing loss of a battery voltage on an output side of a vehicle-mounted DCDC converter. A current anti-backflow unit is provided between an output capacitor and a low-voltage battery pack. Different anti-backflow current values can be implemented by setting a resistor-divided voltage formed for an auxiliary voltage by a first voltage division resistor unit and a second voltage division resistor unit and applied to a negative input end of a comparator in the current anti-backflow unit, and high self-test coverage rate of a safety mechanism is implemented by providing a first self-test unit, a second self-test unit, and a third self-test unit, thereby implementing a functional safety mechanism design which is more flexible, has low power consumption, high reliability, and a high self-test coverage rate, and is applied to the vehicle-mounted DCDC converter to prevent instantaneous loss of a 12 V battery voltage on the output side.
Inventors:
HU SENJUN (CN)
HAO SHIQIANG (CN)
XU YANWEI (CN)
LI WENYU (CN)
SHI HONGBO (CN)
HE QIANG (CN)
PING DINGGANG (CN)
HAO SHIQIANG (CN)
XU YANWEI (CN)
LI WENYU (CN)
SHI HONGBO (CN)
HE QIANG (CN)
PING DINGGANG (CN)
Application Number:
PCT/CN2022/075677
Publication Date:
December 22, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
ZHEJIANG EV TECH CO LTD (CN)
International Classes:
H02J7/00; B60R16/033; H02H7/12; H02J7/34; H02M1/32
Foreign References:
| CN113258648A | 2021-08-13 | |||
| CN209462249U | 2019-10-01 | |||
| CN111864719A | 2020-10-30 | |||
| CN112769175A | 2021-05-07 | |||
| CN111615247A | 2020-09-01 | |||
| CN106965761A | 2017-07-21 | |||
| US5793189A | 1998-08-11 | |||
| CN202110669083A | 2021-06-17 |
Attorney, Agent or Firm:
SHANGHAI BETTER PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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