CN-122026552-A - Battery charging system including isolated power divider operating in simultaneous charge and discharge mode

Abstract

A battery charging system for a vehicle includes a multi-port transformer including first, second, and third windings. The first converter is connected to the first winding and includes a first plurality of switches. The second converter is connected to the second winding and the battery and includes a second plurality of switches. The third converter is connected to the third winding and an Alternating Current (AC) power outlet and includes a third plurality of switches. The first plurality of configuration switches are configured to selectively connect the first converter to the charging port. The controller is configured to control the first, second, and third pluralities of switches, the first plurality of configuration switches, and the second plurality of configuration switches of the first, second, and third converters to select one of a plurality of charging modes of the battery charging system.

Inventors

• M-K.Ruan
• GABSI MOHAMED
• B.A. Welchiko

Assignees

• 通用汽车环球科技运作有限责任公司

Dates

Publication Date

20260512

Application Date

20241227

Priority Date

20241101

Claims (10)

1. 1. A battery charging system for a vehicle, comprising: A multiport transformer comprising a first winding, a second winding, and a third winding wound around a common core; A first converter connected to the first winding and comprising a first plurality of switches; a second converter connected to the second winding and the battery and including a second plurality of switches; A third converter connected to the third winding and an Alternating Current (AC) power outlet and including a third plurality of switches; A first plurality of configuration switches configured to selectively connect the first converter to the charging port, and A controller configured to control the first plurality of switches of the first converter, the second plurality of switches of the second converter, the third plurality of switches of the third converter, the first plurality of configuration switches, and the second plurality of configuration switches to select one of a plurality of charging modes of the battery charging system.
2. 2. The battery charging system according to claim 1, further comprising: a Ground Fault Circuit Interrupter (GFCI) connected between the third converter and the AC power receptacle; A second plurality of configuration switches configured to selectively connect the first converter to the second converter, and A third plurality of configuration switches configured to selectively connect the third converter to the AC power outlet.
3. 3. The battery charging system of claim 2, wherein the plurality of charging modes comprises: a charging mode for charging the battery, A charging/discharging mode for charging a battery from an AC power grid via a charging port while supplying power to an AC power outlet, and A discharge/discharge mode for discharging the battery to the load via the charging port while supplying power to the AC power outlet.
4. 4. The battery charging system of claim 3, wherein, during the charging mode, the controller is configured to close the first plurality of configuration switches and the second plurality of configuration switches and open the third plurality of configuration switches.
5. 5. The battery charging system of claim 4, wherein during the charging mode, the controller is configured to control the first, second, and third plurality of switches to supply current from the AC power grid to the third converter and the battery through the charging port, the first converter, and the second converter.
6. 6. The battery charging system of claim 3, wherein, during the charge/discharge mode, the controller is configured to close the first plurality of configuration switches and the third plurality of configuration switches and open the second plurality of configuration switches.
7. 7. The battery charging system of claim 6, wherein during the charge/discharge mode, the controller is configured to control the first, second, and third plurality of switches to supply current from the AC power grid to the second and battery through the first and third converters and to the AC power outlet.
8. 8. The battery charging system of claim 3, wherein, during the discharge/discharge mode, the controller is configured to close the first plurality of configuration switches and the third plurality of configuration switches and open the second plurality of configuration switches.
9. 9. The battery charging system of claim 8, wherein during the discharge/discharge mode, the controller is configured to control the first, second, and third plurality of switches to supply current from the battery to the AC power outlet through the second converter, the first converter, and the charging port and through the second converter and the third converter.
10. 10. A battery charging system according to claim 3, wherein the AC grid supplies three-phase AC current.

Description

Battery charging system including isolated power divider operating in simultaneous charge and discharge mode Technical Field The information provided in this section is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure. The present disclosure relates to battery charging systems including isolated power splitters. Background An Electric Vehicle (EV), such as a Battery Electric Vehicle (BEV), a hybrid vehicle, and/or a fuel cell vehicle, includes one or more electric machines and a battery that includes one or more battery cells, modules, and/or battery packs. Battery charging systems are used to control charging from an Alternating Current (AC) grid or to supply power from a battery to an AC grid or another load. Disclosure of Invention A battery charging system for a vehicle includes a multi-port transformer including a first winding, a second winding, and a third winding wound around a common core. The first converter is connected to the first winding and includes a first plurality of switches. The second converter is connected to the second winding and the battery and includes a second plurality of switches. The third converter is connected to the third winding and an Alternating Current (AC) power outlet and includes a third plurality of switches. The first plurality of configuration switches are configured to selectively connect the first converter to the charging port. The controller is configured to control the first plurality of switches of the first converter, the second plurality of switches of the second converter, the third plurality of switches of the third converter, the first plurality of configuration switches, and the second plurality of configuration switches to select one of a plurality of charging modes of the battery charging system. In other features, a Ground Fault Circuit Interrupter (GFCI) is connected between the third converter and the AC power receptacle. The second plurality of configuration switches is configured to selectively connect the first converter to the second converter. The third plurality of configuration switches is configured to selectively connect the third converter to the AC power outlet. In other features, the plurality of charging modes includes a charging mode for charging the battery, a charging/discharging mode for charging the battery from the AC power grid via the charging port while power is supplied to the AC power outlet, and a discharging/discharging mode for discharging the battery to the load via the charging port while power is supplied to the AC power outlet. In other features, during the charging mode, the controller is configured to close the first plurality of configuration switches and the second plurality of configuration switches and open the third plurality of configuration switches. During the charging mode, the controller is configured to control the first, second, and third plurality of switches to supply current from the AC power grid to the third converter and the battery through the charging port, the first converter, and the second converter. In other features, during the charge/discharge mode, the controller is configured to close the first plurality of configuration switches and the third plurality of configuration switches and open the second plurality of configuration switches. In other features, during the charge/discharge mode, the controller is configured to control the first, second, and third plurality of switches to supply current from the AC power grid to the second converter and the battery through the first converter and to the AC power outlet through the first converter and the third converter. In other features, during the discharge/discharge mode, the controller is configured to close the first plurality of configuration switches and the third plurality of configuration switches and open the second plurality of configuration switches. In other features, during the discharge/discharge mode, the controller is configured to control the first, second, and third plurality of switches to supply current from the battery to the AC power outlet through the second, first, and charge ports and through the second and third converters. In other features, the AC power grid supplies three-phase AC current. The AC grid supplies single-phase AC current. A battery charging system for a vehicle includes a multi-port transformer including a first winding, a second winding, and a third winding wound around a common core. The first converter is connected to the first winding and includes a first plurality of switches. A first electromagnetic interference (EMI) filter is connected to the first converter. The second converter is connected to the s