Back to results
US 10,707,689 B2Granted
Battery charger
AssigneeTexas Instruments Incorporated
InventorYevgen Barsukov
Life of this patent
Estimating the term…
Abstract
A battery charger can include a charger controller configured to determine a total charge time that characterizes a time needed to charge a battery, the total charge time being based on a received state of charge (SOC) of the battery that characterizes a present SOC of the battery. The charger controller can also be configured to determine a charging start time for the battery based on a predetermined full charge time and the total charge time.
Claims20
A battery charger comprising:
- a memory storing battery parameters, including a battery time constant and a present state of charge of a battery;
- and
- a controller coupled to the memory, and configured to:
- determine a transitional state of charge based on a difference between a predetermined current and a taper current, a full charge capacity, the battery time constant, and the present state of charge;
- determine a total charge time based on the battery time constant, the present state of charge, and the transitional state of charge;
- determine a charging start time based on the total charge time;
- maintain the battery at the present state of charge below the full charge capacity of the battery before the charging start time;
- generate a first signal associated with the predetermined current to charge the battery after the charging start time and before the battery reaches the transitional state of charge;
- and
- generate a second signal associated with a predetermined voltage to charge the battery after the battery reaches the transitional state of charge.
7 more elements
A battery charger comprising:
- a memory storing battery parameters, including a battery time constant and a present state of charge of a battery;
- and
- a controller coupled to the memory, and configured to:
- determine a transitional state of charge based on a difference between a predetermined current and a taper current, a full charge capacity, the battery time constant, and the present state of charge;
- determine a total charge time based on the battery time constant, the present state of charge, and the transitional state of charge;
- determine a charging start time based on the total charge time;
- maintain the battery at the present state of charge below the full charge capacity of the battery before the charging start time;
- generate a pre-transitional state signal associated with the predetermined current to charge the battery after the charging start time and before the battery reaches the transitional state of charge.
5 more elements
A battery charger comprising:
- a memory storing battery parameters, including a battery time constant and a present state of charge of a battery;
- and
- a controller coupled to the memory, and configured to:
- determine a transitional state of charge based on a difference between a predetermined current and a taper current, a full charge capacity, the battery time constant, and the present state of charge;
- determine a total charge time based on the battery time constant, the present state of charge, and the transitional state of charge;
- determine a charging start time based on the total charge time;
- maintain the battery at the present state of charge below the full charge capacity of the battery before the charging start time;
- and
- generate a post-transitional state signal associated with a predetermined voltage to charge the battery after the battery reaches the transitional state of charge.
6 more elements
Dependencies are inferred from the claim text.