Method and apparatus for charging a high-voltage battery assembly
First Claim
1. A high-voltage battery assembly for a hybrid vehicle, comprising:
- a high-voltage battery electrically connected to a high-voltage bus including a positive rail and a negative rail, wherein the negative rail includes a controllable contactor switch;
a boost charging module including a DC-DC boost converter, a low-voltage power input line, a boost switch and a boost controller, wherein the DC-DC boost converter is electrically connected to the low-voltage power input line via closing of the boost switch, wherein the DC-DC boost converter includes an electric power output line, and wherein the electric power output line is electrically connected to the positive rail of the high-voltage bus;
an auxiliary power module including an input power line electrically connected to the positive rail of the high-voltage bus and an output power line electrically connected to a low-voltage on-vehicle battery; and
a low-voltage electrical connector electrically connected to the low-voltage power input line of the DC-DC boost converter,wherein the boost controller includes an instruction set, the instruction set executable to;
detect presence of low-voltage power on the low-voltage power input line supplied from the low-voltage electrical connector,detect that the controllable contactor switch of the negative rail is in an open state,close the boost switch,control the DC-DC boost converter to convert the low-voltage power on the low-voltage power input line to high-voltage power to charge the high-voltage battery, andcontrol the auxiliary power module to convert the high-voltage DC power to low-voltage DC power to electrically charge the low-voltage on-vehicle battery.
1 Assignment
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Accused Products
Abstract
A high-voltage battery assembly includes a high-voltage battery electrically connected to a high-voltage bus including a positive rail and a negative rail, wherein the negative rail includes a controllable contactor switch. A boost charging module includes a DC-DC boost converter, a low-voltage power input line, a boost switch and a boost controller. The DC-DC boost converter is electrically connected to the low-voltage power input line via activation of the boost switch. The DC-DC boost converter connects to the positive rail. A low-voltage electrical connector is electrically connected to the low-voltage power input line of the DC-DC boost converter. The boost controller detects low-voltage power from the low-voltage electrical connector, detects that the controllable contactor switch, closes the boost switch, and controls the DC-DC boost converter to convert the low-voltage power on the low-voltage power input line to high-voltage power to charge the high-voltage battery.
3 Citations
12 Claims
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1. A high-voltage battery assembly for a hybrid vehicle, comprising:
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a high-voltage battery electrically connected to a high-voltage bus including a positive rail and a negative rail, wherein the negative rail includes a controllable contactor switch; a boost charging module including a DC-DC boost converter, a low-voltage power input line, a boost switch and a boost controller, wherein the DC-DC boost converter is electrically connected to the low-voltage power input line via closing of the boost switch, wherein the DC-DC boost converter includes an electric power output line, and wherein the electric power output line is electrically connected to the positive rail of the high-voltage bus; an auxiliary power module including an input power line electrically connected to the positive rail of the high-voltage bus and an output power line electrically connected to a low-voltage on-vehicle battery; and a low-voltage electrical connector electrically connected to the low-voltage power input line of the DC-DC boost converter, wherein the boost controller includes an instruction set, the instruction set executable to; detect presence of low-voltage power on the low-voltage power input line supplied from the low-voltage electrical connector, detect that the controllable contactor switch of the negative rail is in an open state, close the boost switch, control the DC-DC boost converter to convert the low-voltage power on the low-voltage power input line to high-voltage power to charge the high-voltage battery, and control the auxiliary power module to convert the high-voltage DC power to low-voltage DC power to electrically charge the low-voltage on-vehicle battery. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A high-voltage battery assembly for a vehicle, comprising:
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a high-voltage battery electrically connected to a high-voltage bus including a positive rail and a negative rail, wherein the negative rail includes a controllable contactor switch; a boost charging module including a DC-DC boost converter, a low-voltage power input line, a boost switch and a boost controller; and a low-voltage electrical connector electrically connected to the low-voltage power input line of the DC-DC boost converter; and an auxiliary power module including an input power line electrically connected to the positive rail of the high-voltage bus and an output power line electrically connected to a low-voltage on-vehicle battery; wherein the DC-DC boost converter is electrically connected to the low-voltage power input line via closing of the boost switch; wherein the DC-DC boost converter includes an electric power output line; wherein the electric power output line is electrically connected to the positive rail of the high-voltage bus; wherein the low-voltage power input line of the DC-DC boost converter is electrically connected via a low-voltage electrical connector to an off-board AC/DC charging module; and wherein the boost controller includes an instruction set, the instruction set executable to; detect presence of low-voltage power on the low-voltage power input line supplied via the low-voltage electrical connector, detect that the controllable contactor switch of the negative rail is in an open state, close the boost switch, control the DC-DC boost converter to convert the low-voltage power on the low-voltage power input line to high-voltage power to charge the high-voltage battery, and control the auxiliary power module to convert the high-voltage DC power to low-voltage DC power to electrically charge the low-voltage on-vehicle battery. - View Dependent Claims (8, 9, 10, 11)
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12. A method for charging a battery, comprising:
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electrically connecting a high-voltage battery via a high-voltage bus including a positive rail and a negative rail to a boost charging module including a DC-DC boost converter including a boost switch and a boost controller; electrically connecting a low-voltage power input line to an input line of the DC-DC boost converter; electrically connecting a high-voltage power input line between an output line of the DC-DC boost converter and the positive rail of the high-voltage bus; electrically connecting a low-voltage electrical connector to the low-voltage power input line of the DC-DC boost converter; electrically connecting an auxiliary power module including an input power line to the positive rail of the high-voltage bus and an output power line electrically connected to a low-voltage on-vehicle battery; detecting, via the boost controller, a presence of low-voltage power on the low-voltage power input line; detecting that a controllable contactor switch of the negative rail is in an open state; closing the boost switch; charging the high-voltage battery by controlling the DC-DC boost converter to convert the low-voltage power on the low-voltage power input line to high-voltage power; and charging the low-voltage on-vehicle battery by controlling the auxiliary power module to convert the high-voltage DC power to low-voltage DC power.
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Specification