Battery heating circuits and methods with resonance components in series using energy transfer and voltage inversion
First Claim
1. A circuit for heating a battery, the circuit comprising:
- the battery including a first damping component and a first current storage component, the first damping component and the first current storage component being parasitic to the battery;
a switch unit;
a switching control component coupled to the switch unit;
a first charge storage component; and
an energy transfer and superposition unit connected across the first charge storage component;
wherein;
the first damping component, the first current storage component, the switch unit, and the first charge storage component are connected to form at least a part of a loop;
the switching control component is configured to turn on the switch unit so as to allow a current to flow between the battery and the first charge storage component and to turn off the switch unit so as to stop the current; and
the energy transfer and superposition unit is configured to, after the switch unit is turned on and then turned off, transfer first energy from the first charge storage component to an energy storage component and then adjust a storage voltage associated with the first charge storage component so that a positive voltage terminal of the first charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery;
wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery.
3 Assignments
0 Petitions
Accused Products
Abstract
Circuit and method for heating a battery. The circuit includes the battery including parasitic damping and current storage components, switch unit, switching control component, charge storage component, and energy transfer and superposition unit. The charge storage and current storage components are parts of an energy storage circuit. The switching control component turns on the switch unit so as to allow current to flow between the battery and charge storage component and turns off the switch unit so as to stop the current. The energy transfer and superposition unit, after the switch unit is turned on and then off, transfers energy from the charge storage component to an energy storage component and then adjusts a storage voltage associated with the charge storage component so that a positive voltage terminal of the charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery.
71 Citations
31 Claims
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1. A circuit for heating a battery, the circuit comprising:
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the battery including a first damping component and a first current storage component, the first damping component and the first current storage component being parasitic to the battery; a switch unit; a switching control component coupled to the switch unit; a first charge storage component; and an energy transfer and superposition unit connected across the first charge storage component; wherein; the first damping component, the first current storage component, the switch unit, and the first charge storage component are connected to form at least a part of a loop; the switching control component is configured to turn on the switch unit so as to allow a current to flow between the battery and the first charge storage component and to turn off the switch unit so as to stop the current; and the energy transfer and superposition unit is configured to, after the switch unit is turned on and then turned off, transfer first energy from the first charge storage component to an energy storage component and then adjust a storage voltage associated with the first charge storage component so that a positive voltage terminal of the first charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery; wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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15. A circuit for heating a battery, the circuit comprising:
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the battery including a first damping component and a current storage component, the first damping component and the current storage component being parasitic to the battery; a switch unit; a switching control component coupled to the switch unit; a first charge storage component, the first charge storage component and the first current storage component being at least parts of an energy storage circuit; and an energy transfer and superposition unit coupled to the first charge storage component; wherein; the first damping component, the current storage component, the switch unit, and the first charge storage component are connected in series; the switching control component is configured to turn on and off the switch unit so as to control a current flowing between the battery and the first charge storage component; and the energy transfer and superposition unit is configured to, after the switch unit is turned on and then turned off, transfer energy from the first charge storage component to an energy storage component and then adjust a storage voltage associated with the first charge storage component so that a positive voltage terminal of the first charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery; wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery; wherein the switch unit and the switching control component are configured to allow the current to flow from the battery to the first charge storage component if the switch unit is turned on, but never allow the current to flow from the first charge storage component to the battery; wherein the switching control component is configured to, after the switch unit is turned on, turn off the switch unit when or before the current reduces to zero in magnitude; wherein the switch unit includes; a first one-way semiconductor component; a second one-way semiconductor component; a switch; a second damping component connected in parallel with the second one-way semiconductor component; and a second charge storage component connected in series with a combination of the second damping component and the second one-way semiconductor component; wherein; the switch is connected in parallel with a combination of the second damping component, the second one-way semiconductor component, and the second charge storage component; and the first one-way semiconductor component is connected in series with a combination of the switch, the second damping component, the second one-way semiconductor component, and the second charge storage component; wherein the switching control component is coupled to the switch and configured to turn off the switch unit by turning off the switch before the current reduces to zero in magnitude.
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Specification