US 11,239,756 B2Granted

Troubleshooting method and apparatus for power supply device

AssigneeHuawei Technologies Co., Ltd.

InventorsZhengdong Jiang, Bo Xiao

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Abstract

Embodiments of the application disclose a troubleshooting method and device. The method is applicable to an inverter power supply system in the power supply device. The inverter power supply system includes at least two direct current to direct current (DC/DC) power supply modules, and any DC/DC power supply module of the at least two DC/DC power supply modules includes fuses F1 and F2, relays K1 and K2, inductors L1 and L2, switch modules Q1, Q2, and Q3, and direct current bus capacitors C1 and C2. The troubleshooting method includes: if it is detected that any DC/DC power supply module of the at least two DC/DC power supply modules is a faulty module, determining a faulty component in the faulty module; and if the faulty component is a C1 or a C2, and the inverter power supply system is in a battery discharging mode, turning on a Q2 in the faulty module, so that an F1 and an F2 of the faulty module are blown, thereby disconnecting the faulty module from another DC/DC power supply module.

Claims10

Dependent claims

A troubleshooting method for a power supply device, wherein the troubleshooting method is applicable to an inverter power supply system in the power supply device, the inverter power supply system comprising at least two direct current to direct current (DC/DC) power supply modules, the at least two DC/DC power supply modules connected in parallel to a same battery and supplying power to a load by using a direct current to alternating current (DC/AC) power supply module, and any DC/DC power supply module of the at least two DC/DC power supply modules comprising fuses F1 and F2, relays K1 and K2, inductors L1 and L2, switch modules Q1, Q2, and Q3, and direct current bus capacitors C1 and C2;

one terminal of the K1 is connected to a positive terminal of the battery by using the F1, one terminal of the K2 is connected to a negative terminal of the battery by using the F2, the other terminal of the K1 is connected to connection terminals of the Q1 and the Q2 by using the L1, the other terminal of the K2 is connected to connection terminals of the Q2 and the Q3 by using the L2, one terminal of the Q1 is connected to one terminal of the C1, the other terminal of the Q1 is connected to one terminal of the Q2, the other terminal of the Q2 is connected to one terminal of the Q3, the other terminal of the C1 is connected to the other terminal of the Q3 by using the C2, the troubleshooting method comprising:
if any DC/DC power supply module of the at least two DC/DC power supply modules is detected as faulty, determining a faulty component in a faulty module, wherein the faulty module is said any DC/DC power supply module of the at least two DC/DC power supply modules that is faulty;
and
if the faulty component is a C1 or a C2, and the inverter power supply system is in a battery discharging mode, turning on a Q2 in the faulty module, so that an F1 and an F2 of the faulty module are blown, thereby disconnecting the faulty module from another DC/DC power supply module of the at least two DC/DC power supply modules.

1 more element

A power supply device, wherein the power supply device comprises an inverter power supply system, the inverter power supply system comprising at least two direct current to direct current (DC/DC) power supply modules, the at least two DC/DC power supply modules connected in parallel to a same battery and supplying power to a load by using a direct current to alternating current (DC/AC) power supply module, and any DC/DC power supply module of the at least two DC/DC power supply modules comprising fuses F1 and F2, relays K1 and K2, inductors L1 and L2, switch modules Q1, Q2, and Q3, and direct current bus capacitors C1 and C2;

one terminal of the K1 is connected to a positive terminal of a battery by using the F1, one terminal of the K2 is connected to a negative terminal of the battery by using the F2, the other terminal of the K1 is connected to connection terminals of the Q1 and the Q2 by using the L1, the other terminal of the K2 is connected to connection terminals of the Q2 and the Q3 by using the L2, one terminal of the Q1 is connected to one terminal of the C1, the other terminal of the Q1 is connected to one terminal of the Q2, the other terminal of the Q2 is connected to one terminal of the Q3, the other terminal of the C1 is connected to the other terminal of the Q3 by using the C2, and any DC/DC power supply module of the at least two DC/DC power supply modules of the power supply device comprises:
a detection unit configured to detect a voltage signal and/or a current signal in any DC/DC power supply module of the at least two DC/DC power supply modules, and determine, based on the detected voltage signal and/or the detected current signal, whether the any DC/DC power supply module of the at least two DC/DC power supply modules is a faulty module;
wherein, the detection unit is further configured to, when detecting that any DC/DC power supply module of the at least two DC/DC power supply modules is faulty, detect a faulty component in the faulty module;
and
a control unit configured to, when the detection unit detects that the faulty component in the faulty module is a C1 or a C2, and the inverter power supply system is in a battery discharging mode, turn on a Q2 of the faulty module, wherein an F1 and an F2 of the faulty module are blown, thereby disconnecting the faulty module from another DC/DC power supply module.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/790,027Filed 13 Feb 2020 · continuation
Priority: CN 201710712675.218 Aug 2017
Published: US 2020/0186038 A111 Jun 2020
Granted: 1 Feb 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H02J 4/00
Circuit arrangements for mains or distribution networks not specified as ac or
H02M 3/1584
Including plural semiconductor devices as final control devices for a single load: with a plurality of power processing stages connected in parallel
G01R 31/40
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by…
H02J 7/60
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: including safety or protection arrangements