Charge balancing system
First Claim
Patent Images
1. A high efficiency balancing of individual cells in a battery comprising:
- a power core;
a control core;
a gate driver driving the control core with a varying drive signal;
at least first and second half-converters, each half-converter inductively coupled with the power core and with the control core, each half-converter comprising;
a first winding disposed for inductive coupling with the power core, the first winding having at least a first tap and a second tap;
a second winding disposed for inductive coupling with the control core, the second winding having at least a first tap and a second tap;
a first terminal and a second terminal, the first terminal and the second terminal connected by at least one semiconductor switch with the first winding;
the at least one semiconductor switch having a control terminal, the control terminal of the semiconductor coupled with the second winding.
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Abstract
A method, circuit, and topology are provided for utilization of this circuit in Li-Ion or any other battery that benefits from balancing between individual cells. The whole system is characterized as having high efficiency (and thus low heat losses) compared to previous art implementations. The actions of the circuit are continuous and bi-directional in respect to each cell.
16 Citations
20 Claims
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1. A high efficiency balancing of individual cells in a battery comprising:
- a power core;
a control core;
a gate driver driving the control core with a varying drive signal;at least first and second half-converters, each half-converter inductively coupled with the power core and with the control core, each half-converter comprising; a first winding disposed for inductive coupling with the power core, the first winding having at least a first tap and a second tap; a second winding disposed for inductive coupling with the control core, the second winding having at least a first tap and a second tap; a first terminal and a second terminal, the first terminal and the second terminal connected by at least one semiconductor switch with the first winding; the at least one semiconductor switch having a control terminal, the control terminal of the semiconductor coupled with the second winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- a power core;
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16. A method for use with a high efficiency balancing of individual cells in a battery comprising:
- a power core;
a control core;
a gate driver disposed for driving the control core with a varying drive signal;at least first and second half-converters, each half-converter inductively coupled with the power core and with the control core, each half-converter comprising; a first winding disposed for inductive coupling with the power core, the first winding having at least a first tap and a second tap; a second winding disposed for inductive coupling with the control core, the second winding having at least a first tap and a second tap; a first terminal and a second terminal, the first terminal and the second terminal connected by at least one semiconductor switch with the first winding; the at least one semiconductor switch having a control terminal, the control terminal of the semiconductor coupled with the second winding;
the method comprising the steps of;
driving the control core with a varying drive signal. - View Dependent Claims (17, 18, 19, 20)
- a power core;
Specification