Multiplexed battery management system
AssigneeSion Power Corporation
InventorsGlenn Alan Hamblin, Yuriy V. Mikhaylik, Chariclea Scordilis-Kelley, Mark Niedzwiecki, Scott Stewart, John Hughes
Life of this patent
Estimating the term…
Abstract
Electrochemical cell and battery management systems are generally provided. The systems can comprise at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells. The system can also include a multiplexing switch apparatus connected to each string of cells. The system can also include a controller. In some cases, the controller can be used to control various aspects of the charge and/or discharge of the electrochemical cell and/or battery.
Claims31
A battery management system comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- a multiplexing switch apparatus connected to each string of cells;
- and
- at least one controller configured to use the multiplexing switch apparatus to transition between discharging of a first string of cells and discharging of a second string of cells while keeping a voltage difference between the first string and the second string below a threshold voltage difference.
A battery management system comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- a multiplexing switch apparatus connected to each string of cells;
- and
- at least one controller configured to use the multiplexing switch apparatus to transition between discharging of a first string of cells and discharging of a second string of cells while keeping an overall output voltage of the battery within a window.
A battery management system comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- a multiplexing switch apparatus connected to each string of cells;
- and
- at least one controller configured to use the multiplexing switch apparatus to transition between discharging of a first string of cells and discharging of a second string of cells while keeping an in-rush current resulting from the transition below a threshold current.
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13-26. (canceled)
A battery management system comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- a multiplexing switch apparatus connected to each string of cells;
- and
- at least one controller configured to use the multiplexing switch apparatus to control a duration of pulse discharge of at least one string of the strings of cells based on at least one criterion.
32-39. (canceled)
A battery pack comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- and
- an integrated switching control system comprising at least one switch connected to each string of cells,
- wherein the integrated switching control system is configured to control the at least one switch to discharge a first string having a first voltage at a time of measurement while discharging the first string and not a second string, and then to discharge the second string having a second voltage that is closest to the first voltage at the time of measurement.
41-45. (canceled)
A battery management method comprising:
- using a multiplexing switch apparatus, which is connected to two or more strings of cells of at least one battery, to transition between discharging of a first string of cells and discharging of a second string of cells while keeping a voltage difference between the first string and the second string below a threshold voltage difference,
- wherein each string of cells comprises two or more cells.
A battery management method comprising:
- using a multiplexing switch apparatus, which is connected to two or more strings of cells of at least one battery, to transition between discharging of a first string of cells and discharging of a second string of cells while keeping an overall output voltage of the battery within a window,
- wherein each string of cells comprises two or more cells.
A battery management method comprising:
- using a multiplexing switch apparatus, which is connected to two or more strings of cells of at least one battery, to transition between discharging of a first string of cells and discharging of a second string of cells while keeping an in-rush current resulting from the transition below a threshold current,
- wherein each string of cells comprises two or more cells.
49-63. (canceled)
A battery management system comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- a multiplexing switch apparatus connected to each string of cells;
- and
- at least one controller configured to use the multiplexing switch apparatus to selectively discharge the strings of cells.
65-75. (canceled)
A battery pack comprising:
- at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells;
- and
- an integrated switching control system comprising at least one switch connected to each string of cells,
- wherein the integrated switching control system is configured to control the at least one switch to discharge the strings of cells.
(canceled)
A battery management method comprising:
- using a multiplexing switch apparatus, which is connected to two or more strings of cells of at least one battery, to selectively discharge each string of cells,
- wherein each string of cells comprises two or more cells.
79-87. (canceled)
Dependencies are inferred from the claim text.