Battery pack
First Claim
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1. A battery pack, comprising:
- a first battery with a first capacity, the first battery including a plurality of sub-batteries connected in parallel;
a second battery with a second capacity less than the first capacity, the second battery having a larger maximum discharge current than the first battery; and
a variable resistor circuit connected between the first battery and a load, the variable resistor circuit including a plurality of current limiting circuits, each of the plurality of current limiting circuits connected to a corresponding sub-battery among the plurality of sub-batteries in serial, whereinthe load includes a plurality of sub-loads, each of the plurality of sub-loads connected to a corresponding sub-battery among the plurality of sub-batteries in serial and to output an average current of the corresponding sub-battery,wherein each of the plurality of current limiting circuits includes;
a capacitor connected to the corresponding sub-battery in serial between a first node and a second node;
an inductor connected between the first node and a third node;
a resistor connected between the third node and the second node;
a switch connected to the resistor in parallel; and
a switching controller to receive the average current of the corresponding sub-battery from a corresponding sub-load among the plurality of sub-loads and to output a pulse signal with a duty ratio to the switch.
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Abstract
A battery pack includes a first battery with a first capacity, a second battery with a second capacity less than the first capacity, and a variable resistor. The second battery has a larger maximum discharge current than the first battery. The variable resistor circuit limits the discharge current of the first battery to a predetermined limit current value.
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Citations
8 Claims
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1. A battery pack, comprising:
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a first battery with a first capacity, the first battery including a plurality of sub-batteries connected in parallel; a second battery with a second capacity less than the first capacity, the second battery having a larger maximum discharge current than the first battery; and a variable resistor circuit connected between the first battery and a load, the variable resistor circuit including a plurality of current limiting circuits, each of the plurality of current limiting circuits connected to a corresponding sub-battery among the plurality of sub-batteries in serial, wherein the load includes a plurality of sub-loads, each of the plurality of sub-loads connected to a corresponding sub-battery among the plurality of sub-batteries in serial and to output an average current of the corresponding sub-battery, wherein each of the plurality of current limiting circuits includes; a capacitor connected to the corresponding sub-battery in serial between a first node and a second node; an inductor connected between the first node and a third node; a resistor connected between the third node and the second node; a switch connected to the resistor in parallel; and a switching controller to receive the average current of the corresponding sub-battery from a corresponding sub-load among the plurality of sub-loads and to output a pulse signal with a duty ratio to the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification