Battery heating circuits and methods using resonance components in series based on current limiting and voltage inversion with bi-directionality
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 module 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;
an energy limiting circuit coupled to the switch unit; and
an energy control unit coupled to the first charge storage component;
wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery and charging the battery;
wherein;
the first damping component, the first current storage component, the switch unit, and the first charge storage component are connected in series;
the switching control module is configured to turn on the switch unit and allow a current to flow back-and-forth between the battery and the first charge storage component;
the energy limiting circuit is configured to limit the current flowing from the first charge storage component to the battery; and
the energy control unit is configured to control energy stored in the first charge storage component after the switch unit is turned on and then turned off.
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Accused Products
Abstract
According to some embodiments of the present invention, a battery heating circuit includes a switch unit, a switching control module, a damping component, an energy storage circuit, and an energy superposition unit, wherein: the energy storage circuit is connected with the battery and includes a current storage component and a charge storage component; the damping component, the switch unit, the current storage component, and the charge storage component are connected in series; the switching control module is connected with the switch unit, and configured to control ON/OFF of the switch unit, so as to control the energy flowing between the battery and the energy storage circuit.
75 Citations
21 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 module 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; an energy limiting circuit coupled to the switch unit; and an energy control unit coupled to the first charge storage component; wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery and charging the battery; wherein; the first damping component, the first current storage component, the switch unit, and the first charge storage component are connected in series; the switching control module is configured to turn on the switch unit and allow a current to flow back-and-forth between the battery and the first charge storage component; the energy limiting circuit is configured to limit the current flowing from the first charge storage component to the battery; and the energy control unit is configured to control energy stored in the first charge storage component after the switch unit is turned on and then turned off. - View Dependent Claims (2)
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3. 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 coupled to the battery and including a first switch; a first charge storage component coupled to the battery; an energy control unit coupled to the first charge storage component; and a switching control module coupled to the switch unit and the energy control unit; wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery and charging the battery; wherein the switching control module is configured to; turn on the first switch, for at least a first period of time, to discharge the battery and charge the first charge storage component, with a first current, through at least the first switch; and allow discharging the first charge storage component and charging the battery with a second current for at least a second period of time, the second period of time being after the first period of time; wherein the energy control unit is configured to adjust a storage voltage associated with the first charge storage component during a third period of time, the third period of time being after the second period of time. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A circuit for heating a battery, the circuit comprising:
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the battery including a first resistor and a first inductor, the first resistor and the first inductor being parasitic to the battery; a switch unit coupled to the battery and including a first switch; a first capacitor coupled to the battery; an energy control unit coupled to the first capacitor; and a switching control module coupled to the switch unit and the energy control unit; wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery and charging the battery; wherein the switching control module is configured to; turn on the first switch, for at least a first period of time, to discharge the battery and charge the first capacitor, with a first current, through at least the first switch; and allow discharging the first capacitor and charging the battery with a second current for at least a second period of time, the second period of time being after the first period of time; wherein the energy control unit is configured to adjust a capacitor voltage associated with the first capacitor during a third period of time, the third period of time being after the second period of time. - View Dependent Claims (18, 19, 20, 21)
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Specification