Battery heating circuits and methods based on battery discharging using resonance components in series
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, the battery including a first battery terminal and a second battery terminal;
a switch unit;
a switching control component coupled to the switch unit; and
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;
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; and
the switching control component is configured to turn on the switch unit so as to allow a current to flow from the battery to the first charge storage component but not to allow any current to flow from the first charge storage component to the battery and to turn off the switch unit so as to stop the current;
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
According to certain embodiments, a battery heating circuit is provided, comprising a switch unit 1, a switching control module 100, a damping component R1, and an energy storage circuit; the energy storage circuit is configured to be connected with the battery and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1, and is configured to control ON/OFF of the switch unit 1, so as to control energy flowing from the battery to the energy storage circuit only. For example, the heating circuit provided in the present invention can improve the charge/discharge performance of the battery, and improve safety when the battery is heated.
72 Citations
30 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, the battery including a first battery terminal and a second battery terminal; a switch unit; a switching control component coupled to the switch unit; and 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; 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; and the switching control component is configured to turn on the switch unit so as to allow a current to flow from the battery to the first charge storage component but not to allow any current to flow from the first charge storage component to the battery and to turn off the switch unit so as to stop the current; 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, 8, 9, 10, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30)
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7. 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, the battery including a first battery terminal and a second battery terminal; 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; 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 and off the switch unit so as to control a current flowing from the battery to the first charge storage component but not to allow any current flowing from the first charge storage component to the battery; and wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery, and further comprising an energy superposition unit coupled to the first charge storage component and configured to, after the switch unit is turned on and then turned off, 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 energy superposition unit includes a polarity inversion unit coupled to the first charge storage component and configured to, after the switch unit is turned on and then turned off, invert a voltage polarity associated with the first charge storage component, wherein the polarity inversion unit includes; a second current storage component; a second switch; and a first one-way semiconductor component connected between the first charge storage component and the second current storage component or between the second current storage component and the second switch; wherein; the first charge storage component, the first one-way semiconductor component, the second current storage component, and the second switch are at least parts of a polarity inversion loop; and the switching control component is coupled to the second switch and is configured to invert the voltage polarity associated with the first charge storage component by turning on the second switch.
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11. 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, the battery including a first battery terminal and a second battery terminal; 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; 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 and off the switch unit so as to allow a current to flow from the battery to the first charge storage component but not to allow any current to flow from the first charge storage component to the battery and to turn off the switch unit so as to stop the current; and wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery, and further comprising an energy transfer unit coupled to the first charge storage component and 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. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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29. 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, the battery including a first battery terminal and a second battery terminal; a switch unit; a switching control component coupled to the switch unit; and 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; wherein the switch unit includes; a first one-way semiconductor component; a second one-way semiconductor component; a first 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 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; and the switching control component is configured to turn on and off the switch unit so as to control a current flowing from the battery to the first charge storage component but not to allow any current flowing from the first charge storage component to the battery; 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; the first 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 first 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 first switch and configured to turn off the switch unit by turning off the first switch before the current reduces to zero in magnitude; and wherein the circuit for heating the battery is configured to heat the battery by at least discharging the battery.
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Specification