Active safety management systems for modular dynamically allocated capacity storage systems

Patent metadata

Field	Value
Publication number	US-12024059-B2
Application number	US-202117565647-A
Country	US
Kind code	B2
Filing date	Dec 30, 2021
Priority date	Oct 8, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A vehicle system is provided and includes a modular dynamically allocated capacity storage system (MODACS) and an active management module. The MODACS includes blocks of cells. The active management module is configured to: detect a first state of a first block of cells of the blocks of cells; determine whether a safety fault condition exists with the first block of cells based on the first state of the first block of cells; in response to detecting existence of the safety fault condition, isolate the first block of cells from other ones of the blocks of cells; subsequent to isolating the first block of cells, actively discharge and detect a second state of the first block of cells; and based on the second state, continue isolating the first block of cells or reconnecting the first block of cells such that the first block of cells is no longer isolated.

First claim

What is claimed is:

1. A vehicle system comprising:
a modular dynamically allocated capacity storage system (MODACS) comprising a plurality of blocks of cells; and
an active management module configured to:
detect a first state of a first block of cells of the plurality of blocks of cells;
determine whether a safety fault condition exists with the first block of cells based on the first state of the first block of cells;
in response to detecting existence of the safety fault condition, disconnect and isolate the first block of cells from other ones of the plurality of blocks of cells;
subsequent to isolating the first block of cells, actively discharge and detect a second state of the first block of cells; and
based on the second state, continue isolating the first block of cells or reconnecting the first block of cells to the other ones of the plurality of blocks of cells such that the first block of cells is no longer isolated.

2. The vehicle system of claim 1 , wherein:
the MODACS includes a source terminal; and
the active management module is configured to:
determine whether to connect the first block of cells to the source terminal or a thermal management system to discharge the first block of cells; and
control the MODACS to connect the first block of cells to the source terminal or the thermal management system.

3. The vehicle system of claim 2 , wherein the active management module is configured to connect the first block of cells to the thermal management system when the safety fault condition exists and to the source terminal when the safety fault condition does not exist.

4. The vehicle system of claim 2 , wherein the thermal management system includes at least one of a cooling fan, a cooling pump, a cell balancing system, a resistive load, or a thermal electric generator.

5. The vehicle system of claim 4 , wherein the active management module is configured to run, via power from the first block of cells, at least one of the cooling fan or the cooling pump to cool at least one of the plurality of blocks of cells in response to the safety fault condition existing.

6. The vehicle system of claim 1 , wherein the first state and the second state of the first block of cells refers to at least one of: a current level of the first block of cells; a voltage level of the first block of cells; a power level of the first block of cells; a temperature of the first block of cells; or a rate of change in a parameter of the first block of cells.

7. The vehicle system of claim 1 , further comprising a thermal management system separate from the MODACS and comprising 12V thermal management system loads, wherein:
the MODACS includes a first source terminal and a second source terminal;
the first source terminal is connected to the 12V thermal management system loads;
the second source terminal is connected to other loads; and
the active management module is configured to determine whether to connect the first block of cells to the first source terminal or the second source terminal and control the MODACS to connect the first block of cells to the selected one of the first source terminal or the second source terminal.

8. The vehicle system of claim 1 , wherein:
the MODACS comprises;
a thermal management system; and
a first source terminal connected to a first plurality of loads; and

the active management module is configured to determine whether to connect the first block of cells to the first source terminal or the thermal management system and control the MODACS to connect the first block of cells to the selected one of the first source terminal or the thermal management system.

9. The vehicle system of claim 8 , wherein:
the MODACS comprises a second source terminal connected to a second plurality of loads; and
the active management module is configured to determine whether to connect the first block of cells to the first source terminal, the second source terminal or the thermal management system and control the MODACS to connect the first block of cells to the selected one of the first source terminal, the second source terminal or the thermal management system.

10. The vehicle system of claim 1 , wherein:
the MODACS comprises:
a first source terminal connected to a first plurality of loads;
a second source terminal connected to a second plurality of loads; and
a third source terminal connected to a thermal management system; and

the active management module is configured to determine whether to connect the first block of cells to the first source terminal, the second source terminal or the third source terminal and control the MODACS to connect the first block of cells to the selected one of the first source terminal, the second source terminal or the third source terminal.

11. A method of operating a modular dynamically allocated capacity storage system (MODACS), the method comprising:
detecting a first state of a first block of cells of a plurality of blocks of cells within the MODACS;
determining whether a safety fault condition exists with the first block of cells based on the first state of the first block of cells;
in response to detecting existence of the safety fault condition, disconnecting and isolating the first block of cells from other ones of the plurality of blocks of cells;
subsequent to isolating the first block of cells, actively discharging and detecting a second state of the first block of cells; and
based on the second state, continuing to isolate the first block of cells or reconnecting the first block of cells to the other ones of the plurality of blocks of cells such that the first block of cells is no longer isolated.

12. The method of claim 11 , further comprising:
determining whether to connect the first block of cells to a source terminal of the MODACS or a thermal management system to discharge the first block of cells; and
controlling the MODACS to connect the first block of cells to the source terminal or the thermal management system.

13. The method of claim 12 , further comprising connecting the first block of cells to the thermal management system when the safety fault condition exists and to the source terminal when the safety fault condition does not exist.

14. The method of claim 12 , wherein the thermal management system includes at least one of a cooling fan, a cooling pump, a cell balancing system, a resistive load, or a thermal electric generator.

15. The method of claim 14 , further comprising running, via power from the first block of cells, at least one of the cooling fan or the cooling pump to cool at least one of the plurality of blocks of cells in response to the safety fault condition existing.

16. The method of claim 11 , wherein the first state and the second state of the first block of cells refers to at least one of: a current level of the first block of cells; a voltage level of the first block of cells; a power level of the first block of cells; a temperature of the first block of cells; or a rate of change in a parameter of the first block of cells.

17. The method of claim 11 , further comprising determining whether to connect the first block of cells to a first source terminal or a second source terminal of the MODACS and control the MODACS to connect the first block of cells to the selected one of the first source terminal or the second source terminal, wherein:
the first source terminal is connected to 12V thermal management system loads;
the 12V thermal management system loads are separate from the MODACS; and
the second source terminal is connected to other loads.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Kong Dewen
• Rich Dave G
• Winger Lyall K
• Bloom Aaron B
• Liu Jingyuan
• Wu Meiyuan
• Liu Haijing

Classifications

• B60W20/13

  in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion · CPC title

• B60W20/50

  Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode · CPC title

• B60W10/30

  including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps · CPC title

• B60W10/26

  for electrical energy, e.g. batteries or capacitors · CPC title

• B60K6/485

  Motor-assist type · CPC title