Patent ID: 9214651
Filing Date: 2015-12-15
Classification: H01M,Y02E

Abstract:
1. A secondary battery, comprising: first and second battery cells facing each other; and a case comprising first and second cell accommodators respectively at least partially accommodating the first and second battery cells, and a circuit accommodator formed between the first and second cell accommodators and accommodating and enclosing a protection circuit configured to control charging and discharging operations of the first and second battery cells, wherein the circuit accommodator has top and bottom surfaces opposing each other, wherein each of the first and second cell accommodators has top and bottom surfaces opposing each other, wherein the top surface of the circuit accommodator of the case has a downward step with respect to the top surfaces of the first and second cell accommodators of the case, wherein the first and second battery cells are respectively partially inserted into the first and second cell accommodators of the case, wherein each of the first and second cell accommodators comprises: a rim portion that surrounds front ends of the first and second battery cells and forms openings configured to accommodate the first and second battery cells, and wherein a main surface of the protection circuit and main surfaces of the first and second battery cells face the same upward-downward direction.