Monitoring State of Charge of a Battery
First Claim
1. A method for determining a reported state of charge (“
- SOC”
) of a battery system, the method comprising;
determining the reported SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%;
determining the reported SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; and
determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
5 Assignments
0 Petitions
Accused Products
Abstract
Methods, apparatus, and computer program products are disclosed for determining a reported state of charge (“SOC”) of a battery system, the methods, apparatus, and computer program products including determining the reported SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining the reported SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; and determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
-
Citations
42 Claims
-
1. A method for determining a reported state of charge (“
- SOC”
) of a battery system, the method comprising;determining the reported SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining the reported SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; and determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- SOC”
-
11. A method for determining a reported state of charge (“
- SOC”
) of a battery system, the method comprising;determining a calculated SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining a calculated SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; determining a calculated SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage; and determining the reported SOC by correcting the calculated SOC based on a current temperature in the battery system.
- SOC”
-
12. A method for determining a reported state of charge (“
- SOC”
) of a battery system, the method comprising;determining a calculated SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining a calculated SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; determining a calculated SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage; determining the reported SOC to be equal to the calculated SOC if
1) the calculated SOC is less than the previous SOC or
2) the battery system is electrically coupled to a charge current; anddetermining the reported SOC to be equal to the previous SOC when the calculated SOC is greater than the previous SOC and the battery system is not electrically coupled to a charge current.
- SOC”
-
13. A method for determining a reported SOC of a battery system, the method comprising:
-
determining the reported SOC according to a first determining method when
1) a charge current is present in the battery system, or
2) a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%;determining the reported SOC according to a second determining method when the learned capacity is greater than a learned capacity threshold percentage, or when the previous SOC is greater than a second SOC threshold percentage and less than or equal to the first SOC threshold percentage; and determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
-
-
14. A method for determining a reported SOC of a battery system, the method comprising:
-
calculating a learned capacity of the battery system using a previous SOC of the battery system and a coulomb discharge value; determining the reported SOC according to a first determining method when the previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining the reported SOC according to a second determining method when
1) the learned capacity is greater than a learned capacity threshold percentage, or
2) the previous SOC is greater than a second SOC threshold percentage and less than or equal to the first SOC threshold percentage; anddetermining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
-
-
15. An apparatus for determining a reported SOC of a battery system, the apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer instructions capable of:
-
determining the reported SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining the reported SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. An apparatus for determining a reported SOC of a battery system, the apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer instructions capable of:
-
determining a calculated SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining a calculated SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; determining a calculated SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage; and determining the reported SOC by correcting the calculated SOC based on a current temperature in the battery system.
-
-
26. An apparatus for determining a reported SOC of a battery system, the apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer instructions capable of:
-
determining a calculated SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining a calculated SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; determining a calculated SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage; determining the reported SOC to be equal to the calculated SOC if
1) the calculated SOC is less than the previous SOC or
2) the battery system is electrically coupled to a charge current; anddetermining the reported SOC to be equal to the previous SOC when the calculated SOC is greater than the previous SOC and the battery system is not electrically coupled to a charge current.
-
-
27. An apparatus for determining a reported SOC of a battery system, the apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer instructions capable of:
-
determining the reported SOC according to a first determining method when
1) a charge current is present in the battery system, or
2) a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%;determining the reported SOC according to a second determining method when the learned capacity is greater than a learned capacity threshold percentage, or when the previous SOC is greater than a second SOC threshold percentage and less than or equal to the first SOC threshold percentage; and determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
-
-
28. An apparatus for determining a reported SOC of a battery system, the apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer instructions capable of:
-
calculating a learned capacity of the battery system using a previous SOC of the battery system and a coulomb discharge value; determining the reported SOC according to a first determining method when the previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; determining the reported SOC according to a second determining method when
1) the learned capacity is greater than a learned capacity threshold percentage, or
2) the previous SOC is greater than a second SOC threshold percentage and less than or equal to the first SOC threshold percentage; anddetermining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
-
-
29. A computer program product embodied on a tangible computer-readable medium for determining a reported state of charge (“
- SOC”
) of a battery system, the computer program product comprising;computer program instructions for determining the reported SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; computer program instructions for determining the reported SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; and computer program instructions for determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
- SOC”
-
39. A computer program product embodied on a tangible computer-readable medium for determining a reported state of charge (“
- SOC”
) of a battery system, the computer program product comprising;computer program instructions for determining a calculated SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; computer program instructions for determining a calculated SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; computer program instructions for determining a calculated SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage; and computer program instructions for determining the reported SOC by correcting the calculated SOC based on a current temperature in the battery system.
- SOC”
-
40. A computer program product embodied on a tangible computer-readable medium for determining a reported state of charge (“
- SOC”
) of a battery system, the computer program product comprising;computer program instructions for determining a calculated SOC according to a first determining method when a previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; computer program instructions for determining a calculated SOC according to a second determining method when the previous SOC is greater than a second threshold percentage and less than or equal to the first SOC threshold percentage; computer program instructions for determining a calculated SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage; computer program instructions for determining the reported SOC to be equal to the calculated SOC if
1) the calculated SOC is less than the previous SOC or
2) the battery system is electrically coupled to a charge current; andcomputer program instructions for determining the reported SOC to be equal to the previous SOC when the calculated SOC is greater than the previous SOC and the battery system is not electrically coupled to a charge current.
- SOC”
-
41. A computer program product embodied on a tangible computer-readable medium for determining a reported state of charge (“
- SOC”
) of a battery system, the computer program product comprising;computer program instructions for calculating a learned capacity of the battery system using a previous SOC of the battery system and a coulomb discharge value; computer program instructions for determining the reported SOC according to a first determining method when the previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; computer program instructions for determining the reported SOC according to a second determining method when
1) the learned capacity is greater than a learned capacity threshold percentage, or
2) the previous SOC is greater than a second SOC threshold percentage and less than or equal to the first SOC threshold percentage; andcomputer program instructions for determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
- SOC”
-
42. A computer program product embodied on a tangible computer-readable medium for determining a reported state of charge (“
- SOC”
) of a battery system, the computer program product comprising;computer program instructions for calculating a learned capacity of the battery system using a previous SOC of the battery system and a coulomb discharge value; computer program instructions for determining the reported SOC according to a first determining method when the previous SOC is greater than a first SOC threshold percentage and less than or equal to 100%; computer program instructions for determining the reported SOC according to a second determining method when the learned capacity is greater than a learned capacity threshold percentage, or when the previous SOC is greater than a second SOC threshold percentage and less than or equal to the first SOC threshold percentage; and computer program instructions for determining the reported SOC according to a third determining method when the previous SOC is greater than or equal to 0% and less than or equal to the second SOC threshold percentage.
- SOC”
Specification