Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods
Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
1. A battery comprising:
a first battery terminal;
a second battery terminal; and
a plurality of submodules individually comprising:
a first submodule terminal;
a second submodule terminal;
a plurality of rechargeable cells electrically coupled in parallel between the first and second submodule terminals;
switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules; and
a control circuitry configured to control operation of the switching circuitry.
2. The battery of claim 1 wherein the switching circuitry of an other of the submodules is configured to electrically couple one of the first and second submodule terminals of the other of the submodules with one of the first and second battery terminals at a moment in time during the disengaged mode of operation of the one of the submodules.
3. The battery of claim 1 wherein the submodules individually comprise a plurality of strings which individually comprise a plurality of the rechargeable cells coupled in series, and wherein the strings are coupled in parallel between the first and second submodule terminals.
4. The battery of claim 1 wherein the control circuitry is configured to control the operation responsive to an alarm condition.
5. The battery of claim 1 wherein the control circuitry is configured to monitor the cells of the submodules during charging of the cells and to control the switching circuitry of the submodules during the charging and responsive to the monitoring of the cells.
6. The battery of claim 5 wherein the control circuitry is configured to control the switching circuits to control state of charge of the cells of the submodules during the charging.
7. The battery of claim 5 wherein the control circuitry is configured to control the switching circuits to provide increased current to the cells of one of the submodules during the charging compared with a current provided to the cells of an other of the submodules during the charging.
8. The battery of claim 7 wherein the control circuitry is configured to provide the increased current to the cells of the one of the submodules responsive to a voltage of the cells of the one of the submodules being less than a voltage of the cells of the other of the submodules.
9. The battery of claim 1 wherein the submodules individually comprise balancing circuitry configured to selectively shunt current around respective ones of the cells.
10. The battery of claim 9 wherein the balancing circuitry of a first of the submodules is configured to control shunting of the current around an individual one of the cells of the first of the submodules during charging of the cells of the first of the submodules and using a voltage of the individual one of the cells of the first of the submodules.
11. The battery of claim 1 further comprising control circuitry configured to control the one of the submodules to operate in the disengaged mode of operation responsive to an alarm condition being present in the one of the submodules.
12. The battery of claim 11 wherein the alarm condition indicates an electrical characteristic of at least one of the cells of the one of the submodules triggering a threshold.
13. The battery of claim 1 further comprising control circuitry configured to control the one of the submodules to operate in the disengaged mode of operation responsive to an alarm condition being present external of the one of the submodules.
14. The battery of claim 1 further comprising control circuitry configured to control the one of the submodules to operate in the disengaged mode of operation responsive to communications received by the control circuitry from external of the battery.
15. A battery comprising:
a first battery terminal;
a second battery terminal; and
a plurality of submodules individually comprising:
a plurality of rechargeable cells electrically coupled in parallel between the first and second battery terminals, and wherein the submodules are individually configured to operate in an engaged mode of operation wherein the rechargeable cells of the individual submodule at least one of supply and receive electrical energy with respect to the first and second battery terminals and to operate in a disengaged mode of operation wherein the rechargeable cells of the individual submodule do not supply nor receive electrical energy with respect to the first and second battery terminals,
wherein the submodules individually comprise:
first and second submodule terminals; and
switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of the individual submodule during the engaged mode of operation of the individual submodule and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the individual submodule during the disengaged mode of operation of the individual submodule.
16. The battery of claim 15 wherein one of the submodules is configured to operate in the engaged mode of operation during operation of an other of the submodules in the disengaged mode of operation.
17. The battery of claim 15 wherein the submodules individually comprise a plurality of strings which individually comprise a plurality of the rechargeable cells coupled in series, and wherein the strings are coupled in parallel between the first and second submodule terminals.
18. The battery of claim 15 further comprising control circuitry configured to monitor the cells of the submodules during charging of the cells and to control the charging of the cells of the submodules during the charging and responsive to the monitoring of the cells.