Battery heating circuits and methods with resonance components in series using voltage inversion and freewheeling circuit components
First Claim
1. A battery heating circuit, comprising a switch unit, a switching control module, a damping component, an energy storage circuit, a freewheeling circuit, and an energy superposition unit, wherein:
- the energy storage circuit is configured to connect with the battery to form a loop, and comprises 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 is configured to switch on the switch unit so as to allow current flow from the battery to the energy storage circuit and from the energy storage circuit to the battery and to switch off the switch unit so as to stop the current flow;
the energy superposition unit is connected across the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery after the switch unit switches on and then switches off;
the freewheeling circuit is configured to form a serial loop with the battery and the current storage component to sustain current flow in the battery after the switch unit switches on and then switches off.
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Accused Products
Abstract
Circuit and method for heating a battery. The circuit includes the battery with damping component, a switch unit, a switching control module, an energy storage circuit, a freewheeling circuit, and an energy superposition unit. The energy storage circuit connects with the battery to form a loop, and includes current and charge storage components. The damping component, switch unit, current storage component, and charge storage component connect in series. The switching control module turns on the switch unit such that current flows between the battery and energy storage circuit. The energy superposition unit superposes the energy in the energy storage circuit with the energy in the battery after the switch unit switches on and then off. The freewheeling circuit forms a serial loop with the battery and the current storage component to sustain current flow in the battery after the switch unit switches on and then off.
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Citations
19 Claims
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1. A battery heating circuit, comprising a switch unit, a switching control module, a damping component, an energy storage circuit, a freewheeling circuit, and an energy superposition unit, wherein:
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the energy storage circuit is configured to connect with the battery to form a loop, and comprises 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 is configured to switch on the switch unit so as to allow current flow from the battery to the energy storage circuit and from the energy storage circuit to the battery and to switch off the switch unit so as to stop the current flow; the energy superposition unit is connected across the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery after the switch unit switches on and then switches off; the freewheeling circuit is configured to form a serial loop with the battery and the current storage component to sustain current flow in the battery after the switch unit switches on and then switches off. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19)
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11. A battery heating circuit, comprising a switch unit, a switching control module, a damping component, an energy storage circuit, a freewheeling circuit, and an energy superposition unit, wherein:
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the energy storage circuit is configured to connect with the battery to form a loop, and comprises 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 is configured to switch on the switch unit so as to allow current flow between the battery and the energy storage circuit and to switch off the switch unit so as to stop the current flow; the energy superposition unit is connected with the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery after the switch unit switches on and then switches off; the freewheeling circuit is configured to form a serial loop with the battery and the current storage component to sustain current flow in the battery after the switch unit switches on and then switches off; the switch unit comprises a first one-way branch configured to enable energy flow from the battery to the energy storage circuit and a second one-way branch configured to enable energy flow from the energy storage circuit to the battery; and the switching control module is connected to the first one-way branch and the second one-way branch, respectively, and is configured to control switching the switch unit on or off by controlling turning the connected branches on or off;
wherein;the switch unit comprises a first switch, a first one-way semiconductor component, a second switch, and a second one-way semiconductor component, the first switch and the first one-way semiconductor component are connected with each other in series to constitute the first one-way branch; the second switch and the second one-way semiconductor component are connected in series with each other to constitute the second one-way branch; and the switching control module is connected with the first switch and the second switch, and is configured to control turning the first one-way branch and the second one-way branch on or off by controlling switching the first switch and the second switch on or off.
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Specification