SYSTEMS AND METHODS FOR DETERMINING A RESERVE TIME OF A MONOBLOC

1 . A method of determining a reserve time of a monobloc, comprising:

detecting, by a voltage sensor, an end of discharge voltage of the monobloc after a deep discharge of the monobloc;

receiving, by a processor, the end of discharge voltage of the monobloc;

determining or receiving, by the processor, a duration of the deep discharge; and

calculating, by the processor, a discharge reserve time of the monobloc based on the end of discharge voltage and the duration of the deep discharge.

2 . The method of claim 1 , further comprising estimating, by the processor, a state of charge of the monobloc based on the end of discharge voltage, wherein calculating the discharge reserve time further includes calculating the discharge reserve time based on the state of charge.

3 . The method of claim 1 , further comprising:

receiving, by the processor, multiple detected voltages over a period of time;

determining, by the processor, a mode of operation of the monobloc based on at least two of the multiple detected voltages

determining, by the processor, when the mode of operation changes from a discharge mode to another mode; and

determining, by the processor, that the end of discharge voltage is one of the multiple detected voltages that is detected a predetermined amount of time before the mode of operation of the monobloc changes away from the discharge mode.

4 . The method of claim 1 , further comprising calculating, by the processor, an estimated reserve time of the monobloc based on the discharge reserve time of the monobloc.

5 . The method of claim 4 , further comprising determining, by the processor, a deep discharge adjustment factor for the deep discharge, wherein calculating the estimated reserve time of the monobloc is further based on the deep discharge adjustment factor.

6 . The method of claim 4 , wherein calculating the estimated reserve time of the monobloc is performed for each of multiple monoblocs, further comprising determining, by the processor, whether one or more of the multiple monoblocs should be replaced based on the estimated reserve time of the multiple monoblocs.

7 . The method of claim 6 , wherein each of the multiple monoblocs are included in a single battery.

8 . The method of claim 4 , wherein calculating the estimated reserve time of the monobloc is performed for each of multiple discharges.

9 . A system for determining a reserve time of a monobloc, comprising:

a voltage sensor configured to detect an end of discharge voltage of the monobloc after a deep discharge of the monobloc; and

a processor coupled to the voltage sensor and configured to:

receive the end of discharge voltage of the monobloc,

determine or receive a duration of the deep discharge, and

calculate a discharge reserve time of the monobloc based on the end of discharge voltage and the duration of the deep discharge.

10 . The system of claim 9 , wherein:

the processor is further configured to estimate a state of charge of the monobloc based on the end of discharge voltage; and

the processor is further configured to calculate the discharge reserve time based on the state of charge.

11 . The system of claim 9 , wherein the processor is further configured to:

receive multiple detected voltages from the voltage sensor over a period of time;

determine a mode of operation of the monobloc based on at least two of the multiple detected voltages;

determine when the mode of operation changes from a discharge mode to another mode; and

determine that the end of discharge voltage is one of the multiple detected voltages that is detected a predetermined amount of time before the mode of operation of the monobloc changes away from the discharge mode.

12 . The system of claim 9 , wherein the processor is further configured to calculate an estimated reserve time of the monobloc based on the discharge reserve time of the monobloc.

13 . The system of claim 12 , wherein:

the processor is further configured to determine a deep discharge adjustment factor for the deep discharge; and

the processor is further configured to calculate the estimated reserve time of the monobloc further based on the deep discharge adjustment factor.

14 . The system of claim 12 , wherein the processor is further configured to:

calculate the estimated reserve time for each of multiple monoblocs; and

determine whether one or more of the multiple monoblocs should be replaced based on the estimated reserve time of the multiple monoblocs.

15 . The system of claim 14 , wherein each of the multiple monoblocs are included in a single battery.

16 . The system of claim 12 , wherein the processor is configured to calculate the estimated reserve time of the monobloc for each of multiple discharges.

17 . A method of determining a reserve time of a monobloc, comprising:

detecting, by a voltage sensor, an end of discharge voltage of the monobloc after a deep discharge of the monobloc;

receiving, by a processor, the end of discharge voltage of the monobloc;

determining or receiving, by the processor, a duration of the deep discharge;

estimating, by the processor, a state of charge of the monobloc based on the end of discharge voltage;

calculating, by the processor, a discharge reserve time of the monobloc based on the end of discharge voltage, the duration of the deep discharge, and the state of charge of the monobloc; and

calculating, by the processor, an estimated reserve time of the monobloc based on the discharge reserve time of the monobloc.

18 . The method of claim 17 , further comprising determining, by the processor, a deep discharge adjustment factor for the deep discharge, wherein calculating the estimated reserve time of the monobloc is further based on the deep discharge adjustment factor.

19 . The method of claim 17 , wherein calculating the estimated reserve time of the monobloc is performed for each of multiple monoblocs, further comprising determining, by the processor, whether one or more of the multiple monoblocs should be replaced based on the estimated reserve time of the multiple monoblocs.

20 . The method of claim 17 , wherein calculating the estimated reserve time of the monobloc is performed for each of multiple discharges.