US 12,734,916 B2Granted

Charging device and vehicle

AssigneeBYD Company Limited

InventorsWeidong Liu, Chao Wang, Xinghui Wang

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Abstract

A charging device includes a PFC circuit, a first DC conversion module, a second DC conversion module, a switch module, and a control module. The PFC circuit includes at least three-phase bridge arm and is configured to perform PFC on an input AC and output a DC signal after the PFC. The first DC conversion module and the second DC conversion module are coupled to the PFC circuit to convert the AC signal. The switch module configured to turn on the three-phase bridge arm of the PFC circuit during three-phase charging or turn on one of the three-phase bridge arm of the PFC circuit during one-way charging. The control module is connected to the PFC circuit, the first and second DC conversion modules, and the switch module to control the charging device to perform single-phase charging or three-phase charging.

Claims18

Dependent claims

A charging device for supporting both three-phase charging and single-phase charging, comprising:

a power factor correction (PFC) circuit, configured to perform PFC on an input alternating current (AC) and output a direct current (DC) signal after the PFC, wherein the PFC circuit comprises at least three-phase bridge arm;
a first DC conversion circuit, wherein an input terminal of the first DC conversion module is connected to an output terminal of the PFC circuit;
and an output terminal of the first DC conversion module is connected to a power battery and configured to convert the DC signal after the PFC to a first DC signal;
a second DC conversion module, wherein an input terminal of the second DC conversion module is connected to the output terminal of the first DC conversion module and the power battery;
and an output terminal of the second DC conversion module is connected to a storage battery and configured to convert the first DC signal to a second DC signal;
a switch module, wherein a first terminal of the switch module is connected to an input terminal of the PFC circuit;
a second terminal of the switch module is connected to a power input terminal and, the switch module is configured to, when the power input terminal has three-phase power, turn on the three-phase bridge arm of the PFC circuit for three-phase charging and, when the power input terminal has single-phase power, turn on one of the three-phase bridge arm of the PFC circuit for single-phase charging;
and
a control module, respectively connected to control terminals of the PFC circuit, the first DC conversion module, the second DC conversion module, and the switch module and configured to control the charging device to perform the single-phase charging or the three-phase charging.

6 more elements

A vehicle, comprising:

a charging device for supporting both three-phase charging and single-phase charging;
and
a power battery and a storage battery, wherein the charging device is respectively connected to the power battery and the storage battery to charge the power battery and the storage battery,
wherein the charging device comprises:
a power factor correction (PFC) circuit, configured to perform PFC on an input alternating current (AC) and output a direct current (DC) signal after the PFC, wherein the PFC circuit comprises at least three-phase bridge arm;
a first DC conversion module, wherein an input terminal of the first DC conversion module is connected to an output terminal of the PFC circuit;
and an output terminal of the first DC conversion module is connected to the power battery and configured to convert the DC signal after the PFC to a first DC signal;
a second DC conversion module, wherein an input terminal of the second DC conversion module is connected to the output terminal of the first DC conversion module and the power battery;
and an output terminal of the second DC conversion module is connected to the storage battery and configured to convert the first DC signal to a second DC signal;
a switch module, wherein a first terminal of the switch module is connected to an input terminal of the PFC circuit;
a second terminal of the switch module is connected to a power input terminal and, the switch module is configured to, when the power input terminal has three-phase power, turn on the three-phase bridge arm of the PFC circuit for three-phase charging and, when the power input terminal has single-phase power, turn on one of the three-phase bridge arm of the PFC circuit for single-phase charging;
and
a control module, respectively connected to control terminals of the PFC circuit, the first DC conversion module, the second DC conversion module, and the switch module and configured to control the charging device to perform the single-phase charging or the three-phase charging.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/299,021Filed 11 Apr 2023 · continuation
Priority: CN 202022273527.513 Oct 2020
Published: US 2023/0249564 A110 Aug 2023
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

B60L 3/0023
Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy…:…
B60L 53/20
Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of…:…
B60L 3/0092
Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy…: with…
B60L 53/22
Characterised by converters located in the vehicle: constructional details or arrangements of charging converters specially adapted for charging…