Electrode assembly, and battery cell and device comprising same

Electrode assembly, and battery cell and device comprising same

  • CN 103,608,960 A
  • Filed: 03/15/2013
  • Published: 02/26/2014
  • Est. Priority Date: 04/20/2012
  • Status: Active Grant
First Claim
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1. an electrode assemblie, comprises the combination of the electrode unit of two or more types with different area, and described electrode unit is stacked as and makes to form step portion between described electrode unit,Wherein, the interface that positive electrode and negative electrode are formed between described electrode unit faces with each other, andMeet equation 4:

  • Equation 4;

    dN n/ dP n

    dN n/ dP n+1Wherein, n is not less than 1 integer,DN nthe thickness of the described negative electrode of the described electrode unit that on area, n is large, DP nthe thickness of the described positive electrode of the described electrode unit that on area, n is large, and DP n+1the thickness of the described positive electrode of the described electrode unit that on area, n+1 is large.

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