Systems and methods for control of a current interruption component in a battery system

Patent metadata

Field	Value
Publication number	US-9362544-B2
Application number	US-201313777492-A
Country	US
Kind code	B2
Filing date	Feb 26, 2013
Priority date	Feb 26, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

Disclosed herein are systems and methods for control of a current interruption component in a battery system. Various embodiments consistent with the present disclosure may include a detection system configured to detect an event (e.g., an impact event, a resistive short, a coolant leak, etc.) and a control system configured to receive information from the detection system and to generate a control signal based upon detection of the event. The control signal may selectively actuate an electrical clearing component. A current interruption component may be configured to selectively interrupt a flow of current upon an occurrence of a condition that results from actuation of the electrical clearing component. Upon detection of the event by the detection system, the control system may generate the control signal to actuate the electrical clearing component, and the actuation of the electrical clearing component may trigger the current interruption system.

First claim

The invention claimed is:

1. A system configured to actuate an electrical clearing component based upon detection of an event, the system comprising:
a detection system configured to detect an event;
a control system configured to receive information from the detection system and to generate a first control signal based upon detection of the event;
a battery;
a first electrical clearing component in electrical communication with the battery and configured to be selectively actuated based on the first control signal;
a first current interruption component configured to selectively interrupt a flow of current upon an occurrence of a condition that results from actuation of the first electrical clearing component and to discharge a circuit in electrical communication with the first current interruption component; and
contactors configured to enable discharge of the battery independent of the first current interruption component;
wherein upon detection of the event by the detection system, the control system is configured to generate the first control signal to actuate the first electrical clearing component, the actuation of the first electrical clearing component being configured to trigger the first current interruption system.

2. The system of claim 1 , wherein the battery further comprising a lithium ion battery comprising a plurality of battery subdivisions;
wherein the first electrical clearing component and the first current interruption component are associated with one of the plurality of battery subdivisions.

3. The system of claim 1 , further comprising:
a second electrical clearing component configured to be selectively actuated based on the second control signal; and
a second current interruption component configured to selectively interrupt a flow of current based on actuation of the second electrical clearing component;
wherein the second current interruption component interrupts an electrical circuit that provides electrical power to one of a pack wiring harness and pack sense lead electronics of the battery.

4. The system of claim 3 , further comprising:
wherein the control system is configured to generate the second control signal to actuate the second electrical clearing component subsequent to generation of the first control signal.

5. The system of claim 1 , wherein the condition comprises the flow of current exceeding a threshold.

6. The system of claim 1 , wherein the first current interruption component is electrically coupled between a battery and the first electrical clearing component.

7. The system of claim 1 , wherein the first electrical clearing component is disposed in parallel with a cell balancing resistor and a cell balancing switch.

8. The system of claim 1 , wherein the event comprises one of detection of a resistive short, an impact event, and a coolant leak.

9. The system of claim 1 , further comprising:
a processor; and
a non-volatile computer readable storage medium in communication with the processor and configured to store instructions executable on the processor;
wherein the control system comprises instructions executable on the processor and stored on the non-volatile computer readable storage medium to generate the first control signal based upon detection of the event.

10. A mitigation system in a vehicle, comprising:
a first battery component;
a second battery component;
a detection system configured to detect an event;
a control system configured to receive information from the detection system and to generate a first control signal based upon detection of the event;
a first electrical clearing component in electrical communication with the first battery component and configured to be selectively actuated based on the first control signal;
a second electrical clearing component in electrical communication with the second battery component, and second electrical clearing component operable independent of the first control signal;
a first current interruption component in electrical communication with the first battery component, the first current interruption component configured to selectively interrupt a flow of current based on the first control signal and to discharge a circuit in electrical communication with the first current interruption component; and
contactors configured to enable discharge of the first battery component;

independent of the first current interruption component;
wherein upon detection of the event by the event detection system, the control system generates the first control signal in order to actuate the first electrical clearing component, the actuation of the first electrical clearing component configured to trigger only the first current interruption system.

11. The system of claim 10 , wherein the second current interruption system interrupts an electrical circuit that provides electrical power to one of a pack wiring harness and pack sense lead electronics.

12. The system of claim 11 , wherein the control system is configured to generate a second control signal to actuate the second electrical clearing component subsequent to generation of the first control signal.

13. The system of claim 10 , wherein the control system generates the first control signal independent of an occurrence of a pack level fault and independent of a state of charge of the battery.

14. The system of claim 10 , further comprising:
a processor; and
a non-volatile computer readable storage medium in communication with the processor and configured to store instructions executable on the processor;
wherein the control system comprises instructions executable on the processor and stored on the non-volatile computer readable storage medium to generate the control signal based upon detection of the event.

Assignees

• Gm Global Tech Operations Inc

Inventors

• Kelley Paul W
• Chandler Andrew K
• Martel Brian J

Classifications

• H01M10/48 Primary

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/663

  using battery or load disconnect circuits (H02J9/002 takes precedence) · CPC title

• H02J7/80

  including monitoring or indicating arrangements · CPC title

• H01M50/574

  Devices or arrangements for the interruption of current · CPC title