Stacking-typed secondary battery providing two or more operation voltages
First Claim
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1. A lithium secondary battery comprising a battery cell formed by stacking:
- 1) a plurality of full cells having a structure of cathode/separator/anode, or
2) a plurality of bicells having a structure of cathode/separator/anode/separator/cathode or anode/separator/cathode/separator/anode, as unit electrode assemblies;
wherein (i) a cathode active material or (ii) an anode active material or (iii) a cathode active material, and an anode active material in two or more of the unit electrode assemblies are configured to have a different composition to induce a voltage difference and separate electrode terminals are installed in a battery case according to the voltage difference to thereby simultaneously provide two or more voltages by a single battery.
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Abstract
Provided is a stacked-type secondary battery comprising a battery cell formed by stacking a plurality of full cells having a structure of cathode/separator/anode or bicells having a structure of cathode(anode)/separator/anode(cathode)/separator/cathode(anode), as a unit electrode assembly, wherein a cathode active material and/or an anode active material in two or more unit electrode assemblies are configured to have a different composition to induce a voltage difference and separate electrode terminals are installed in a battery case according to the voltage difference to thereby simultaneously provide two or more voltages by a single battery.
17 Citations
9 Claims
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1. A lithium secondary battery comprising a battery cell formed by stacking:
- 1) a plurality of full cells having a structure of cathode/separator/anode, or
2) a plurality of bicells having a structure of cathode/separator/anode/separator/cathode or anode/separator/cathode/separator/anode, as unit electrode assemblies;wherein (i) a cathode active material or (ii) an anode active material or (iii) a cathode active material, and an anode active material in two or more of the unit electrode assemblies are configured to have a different composition to induce a voltage difference and separate electrode terminals are installed in a battery case according to the voltage difference to thereby simultaneously provide two or more voltages by a single battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- 1) a plurality of full cells having a structure of cathode/separator/anode, or
Specification