17887011. HIGH-VOLTAGE BATTERY DISCONNECT METHOD AND MOTOR VEHICLE USING THE SAME simplified abstract (GM GLOBAL TECHNOLOGY OPERATIONS LLC)

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HIGH-VOLTAGE BATTERY DISCONNECT METHOD AND MOTOR VEHICLE USING THE SAME

Organization Name

GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor(s)

Shifang Li of Shelby Township MI (US)

Seungwoo Paik of Wixom MI (US)

Li-pen John Ho of Farmington Hills MI (US)

Andrew K. Chandler of Plymouth MI (US)

HIGH-VOLTAGE BATTERY DISCONNECT METHOD AND MOTOR VEHICLE USING THE SAME - A simplified explanation of the abstract

This abstract first appeared for US patent application 17887011 titled 'HIGH-VOLTAGE BATTERY DISCONNECT METHOD AND MOTOR VEHICLE USING THE SAME

Simplified Explanation

The abstract describes a method for controlling a vehicle battery system, including disconnecting the battery pack from the voltage bus under different conditions using various processes.

  • First battery disconnect process involves opening a main pyro fuse.
  • Second battery disconnect process involves using thermal fuses, solid-state relays, and/or current sensors.
  • Third battery disconnect process involves using contactors or solid-state relays.
    • Potential Applications:**

- Electric vehicles - Hybrid vehicles - Energy storage systems

    • Problems Solved:**

- Ensuring safety of the vehicle battery system - Preventing damage from high overcurrent conditions - Protecting the battery pack from low overcurrent conditions

    • Benefits:**

- Improved safety of the vehicle battery system - Efficient disconnect processes for different conditions - Enhanced protection for the battery pack


Original Abstract Submitted

A method is provided for controlling a vehicle battery system that includes a voltage bus having positive and negative bus rails, at least one battery pack connected to the voltage bus and having positive and negative battery terminals, and a battery disconnect unit. The method includes disconnecting the at least one battery pack from the voltage bus via the battery disconnect unit by performing a first battery disconnect process upon detecting an event condition, by performing a second battery disconnect process upon detecting a high overcurrent condition, and by performing a third battery disconnect process upon detecting a low overcurrent condition. The first battery disconnect process utilizes opening a main pyro fuse, the second battery disconnect process utilizes one or more of thermal fuses, solid-state relays and/or current sensors, and the third battery disconnect process utilizes one or more contactors or solid-state relays.

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