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Method and apparatus for charging a high-voltage battery assembly

A high-voltage battery and battery component technology, applied in battery circuit devices, efficient vehicle charging, electric vehicle charging technology, etc., can solve problems such as reducing the state of charge of low-voltage energy storage devices

Inactive Publication Date: 2017-06-09
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On-board parasitic loads degrade the state of charge of both low-voltage and high-voltage energy storage

Method used

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  • Method and apparatus for charging a high-voltage battery assembly
  • Method and apparatus for charging a high-voltage battery assembly
  • Method and apparatus for charging a high-voltage battery assembly

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Embodiment Construction

[0009] Referring now to the accompanying drawings, the description is only for the purpose of illustrating certain exemplary embodiments, not for the purpose of limiting the present invention. figure 1 An embodiment of the high-voltage battery assembly 110 is schematically shown. The high-voltage battery assembly includes an HV battery 120 that is charged using an external low-power AC / DC power adapter (AC / DC adapter) 160. The high-voltage battery assembly 110 can be advantageously applied to hybrid vehicles, electric vehicles, or other vehicle systems that use high-voltage power. As non-limiting examples, vehicles may include passenger vehicles, light or heavy trucks, utility vehicles, agricultural vehicles, industrial / warehouse vehicles, or recreational off-road vehicles. The high-voltage battery assembly 110 includes a multi-cell high-voltage energy storage device (HV battery) 120 that is electrically connected to the high-voltage bus 112 to supply high-voltage DC power to th...

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PUM

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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.

Description

Technical field [0001] The present invention relates to an electrical energy storage device used on a vehicle. Background technique [0002] Ground vehicles use electrical energy storage devices, which include low-voltage devices (such as lead-acid batteries) and high-voltage devices (such as lithium-ion devices). Low-voltage energy storage devices can be used to supply power for engine starting and low-voltage electrical loads (for example, lighting, HVAC, infotainment, and other on-board loads). High-voltage energy storage devices can be used to supply electric power to electric motors / generators for vehicle propulsion and traction. It is known that vehicle owners park and store vehicles for long periods of time, for example for winter related storage. Vehicle parasitic loads will reduce the state of charge of low-voltage energy storage devices and high-voltage energy storage devices. Summary of the invention [0003] A high-voltage battery assembly for a hybrid vehicle is de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCB60L53/20B60L2210/14H01M16/00H01M2220/20H02J2207/20H02J2310/48H02J2310/18H02J7/02H02J7/00714Y02T10/70Y02T10/92Y02T10/7072Y02T90/14Y02E60/10H02J7/0069H02J7/00H01M10/00
Inventor A·J·纳牟H·X·秦C·C·康诺利P·S·泽姆波利A·P·科塔里
Owner GM GLOBAL TECH OPERATIONS LLC