Method of and apparatus for controlling charging and/or discharging of a battery for a hybrid electric vehicle
First Claim
Patent Images
1. A method of controlling charging and discharging of a multi-module battery for a hybrid vehicle, the method comprising the steps of:
- detecting a battery maintenance condition requiring at least one of charging and discharging a module of the battery;
detecting a vehicle condition;
selectively performing at least one of charging and discharging a module of the battery in response to the battery maintenance condition and the vehicle condition without user intervention.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention is a method and apparatus for controlling charging and/or discharging a battery for a hybrid electric vehicle (HEV).
-
Citations
18 Claims
-
1. A method of controlling charging and discharging of a multi-module battery for a hybrid vehicle, the method comprising the steps of:
-
detecting a battery maintenance condition requiring at least one of charging and discharging a module of the battery;
detecting a vehicle condition;
selectively performing at least one of charging and discharging a module of the battery in response to the battery maintenance condition and the vehicle condition without user intervention. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
the step of detecting a battery maintenance condition comprises detecting a time period after the vehicle transitions from the operational state to the non-operational state; and
the step of selectively performing at least one of charging and discharging comprises charging a module of the battery.
-
-
5. The method according to claim 1, wherein:
-
the step of detecting a battery maintenance condition comprises detecting a discharge period for a module of the battery; and
the step of performing at least one of charging and discharging comprises discharging the module and then charging the module.
-
-
6. The method according to claim 1, wherein the step of detecting a battery maintenance condition comprises detecting a state of charge of a module of the battery under normal conditions, and then detecting a state of charge of the module under controlled conditions if the state of charge of the module under normal conditions is not within a predetermined range.
-
7. The method according to claim 6, wherein the step of detecting a state of charge of a module of the battery under normal conditions comprises detecting a voltage of a module of the battery under normal conditions.
-
8. The method according to claim 6, wherein:
-
the step of detecting a state of charge of the module under controlled conditions comprises detecting a state of charge of the module under a constant current discharge if the state of charge of the module detected under normal conditions is below a threshold; and
the step of performing at least one of charging and discharging comprises charging the module if the difference between the state of charge detected under constant current discharge and a predetermined state of charge exceeds a threshold.
-
-
9. The method according to claim 6, wherein:
-
the step of detecting a state of charge of the module under controlled conditions comprises detecting a state of charge of the module under a constant current charge if the state of charge of the module detected under normal conditions is above a threshold; and
the step of performing at least one of charging and discharging comprises discharging the module if the difference between the state of charge detected under constant current discharge and a predetermined state of charge exceeds a threshold.
-
-
10. A system for controlling charging and discharging of a battery for a hybrid vehicle, the system comprising:
-
a processor; and
a program which controls the processor (i) to detect a battery maintenance condition requiring at least one of charging and discharging a module of the battery, (ii) to detect a vehicle condition, and (iii) to selectively control auxiliary circuitry to perform at least one of charging and discharging a module of the battery in response to the battery maintenance condition and the vehicle condition without user intervention. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
the program controls the processor to detect a battery maintenance condition by detecting a time period after the vehicle transitions from the operational state to the non-operational state; and
the program controls the processor to selectively perform at least one of charging and discharging by charging a module of the battery.
-
-
14. The system of claim 10, wherein the program controls the processor:
-
to detect a battery maintenance condition by detecting a discharge period for a module of the battery; and
to perform at least one of charging and discharging by discharging the module and then charging the module.
-
-
15. The system of claim 10, wherein the program controls the processor to detect a battery maintenance condition by detecting a state of charge of a module of the battery under normal conditions, and then by detecting a state of charge of the module under controlled conditions if the state of charge of the module under normal conditions is not within a predetermined range.
-
16. The system of claim 15, wherein the program controls the processor to detect a state of charge of a module of the battery under normal conditions by detecting a voltage of a module of the battery under normal conditions.
-
17. The system of claim 15, wherein the program controls the processor:
-
to detect a state of charge of the module under controlled conditions by detecting a state of charge of the module under a constant current discharge if the state of charge of the module detected under normal conditions is below a threshold; and
to perform at least one of charging and discharging by charging the module if the difference between the state of charge detected under constant current discharge and a predetermined state of charge exceeds a threshold.
-
-
18. The system of claim 15, wherein the program controls the processor:
-
to detect a state of charge of the module under controlled conditions by detecting a state of charge of the module under a constant current charge if the state of charge of the module detected under normal conditions is above a threshold; and
to perform at least one of charging and discharging by discharging the module if the difference between the state of charge detected under constant current discharge and a predetermined state of charge exceeds a threshold.
-
Specification