Wireless charging techniques and circuitry for a battery
First Claim
Patent Images
1. A wireless charging system for charging a battery, the wireless charging system comprising:
- wireless charging circuitry to charge the battery from a power source, wherein the wireless charging circuitry is based on inductive coupling, wherein the wireless charging circuitry includes a programmable rectifier that is configured to apply at least one of a current or a voltage to the battery, wherein the programmable rectifier includes full-wave and half-wave rectifier circuitry;
monitor circuitry configured to monitor voltage data between terminals of the battery;
control circuitry coupled to the monitor circuitry, the programmable rectifier, and the power source, wherein the control circuitry is configured to provide the power source with one or more control signals and provide the programmable rectifier with one or more additional control signals to select between generating a plurality of pulses via the full-wave rectifier circuitry in the programmable rectifier or generating a plurality of pulses via the half-wave rectifier circuitry in the programmable rectifier based on one or more of the following characteristics;
an overpotential (OP) of the battery characterized as a difference in the monitored voltage between when a charge signal is initiated and when the battery reaches full equilibrium, a full relaxation time (FRT) of the battery, a charge pulse voltage (CPV) of the battery, a change in CPV of the battery, a partial relaxation time (PRT) of the battery, a temperature of the battery (T°
b/c), and a swelling of the battery; and
further wherein the wireless charging circuitry comprises programmable pulse shaping circuitry electrically coupled between the programmable rectifier and the terminals of the battery, and the pulse shaping circuitry provides modification of characteristics of the plurality of pulses output by the programmable rectifier based on one or more of the following characteristics;
the OP of the battery, the FRT of the battery, the CPV of the battery, the change in CPV of the battery, the PRT of the battery, the temperature of the battery, and the swelling of the battery.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless charging system for charging a battery may include wireless charging circuitry based on inductive coupling, where the wireless charging circuitry includes: control circuitry for adaptively charging or charging a battery/cell; and an output of the charging circuitry configured to apply an adapted, unregulated current and/or voltage to the battery. In certain embodiments, the adaptation of the unregulated current and/or voltage is based on the charging and/or operating conditions of the battery.
214 Citations
19 Claims
-
1. A wireless charging system for charging a battery, the wireless charging system comprising:
-
wireless charging circuitry to charge the battery from a power source, wherein the wireless charging circuitry is based on inductive coupling, wherein the wireless charging circuitry includes a programmable rectifier that is configured to apply at least one of a current or a voltage to the battery, wherein the programmable rectifier includes full-wave and half-wave rectifier circuitry; monitor circuitry configured to monitor voltage data between terminals of the battery; control circuitry coupled to the monitor circuitry, the programmable rectifier, and the power source, wherein the control circuitry is configured to provide the power source with one or more control signals and provide the programmable rectifier with one or more additional control signals to select between generating a plurality of pulses via the full-wave rectifier circuitry in the programmable rectifier or generating a plurality of pulses via the half-wave rectifier circuitry in the programmable rectifier based on one or more of the following characteristics;
an overpotential (OP) of the battery characterized as a difference in the monitored voltage between when a charge signal is initiated and when the battery reaches full equilibrium, a full relaxation time (FRT) of the battery, a charge pulse voltage (CPV) of the battery, a change in CPV of the battery, a partial relaxation time (PRT) of the battery, a temperature of the battery (T°
b/c), and a swelling of the battery; andfurther wherein the wireless charging circuitry comprises programmable pulse shaping circuitry electrically coupled between the programmable rectifier and the terminals of the battery, and the pulse shaping circuitry provides modification of characteristics of the plurality of pulses output by the programmable rectifier based on one or more of the following characteristics;
the OP of the battery, the FRT of the battery, the CPV of the battery, the change in CPV of the battery, the PRT of the battery, the temperature of the battery, and the swelling of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19)
-
-
17. A wireless charging method for charging a battery, the method comprising:
-
inductively coupling at least one of current or voltage between a source coil and induction coil; rectifying, by a programmable rectifier, the current or voltage from the induction coil and applying the rectified current or voltage to the battery, wherein the programmable rectifier includes full-wave and half-wave rectifier circuitry; monitoring voltage data between terminals of the battery; and providing the programmable rectifier with one or more control signals to select between generating a plurality of pulses via the full-wave rectifier circuitry in the programmable rectifier or generating a plurality of pulses via the half-wave rectifier circuitry in the programmable rectifier based on one or more of the following characteristics;
an overpotential (OP) of the battery characterized as a difference in the monitored voltage between when a charge signal is initiated and when the battery reaches full equilibrium, a full relaxation time (FRT) of the battery, a charge pulse voltage (CPV) of the battery, a change in CPV of the battery, a partial relaxation time (PRT) of the battery, a temperature of the battery (T°
b/c), and a swelling of the battery; andmodifying characteristics of the plurality of pulses output by the programmable rectifier using programmable pulse shaping circuitry electrically coupled between the programmable rectifier and the terminals of the battery based on one or more of the following characteristics;
the OP of the battery, the FRT of the battery, the CPV of the battery, the change in CPV of the battery, the PRT of the battery, the temperature of the battery, and the swelling of the battery. - View Dependent Claims (18)
-
Specification