Patent ID: 8579042
Filing Date: 2013-11-12
Classification: H01M,H02J,Y02E

Abstract:
1. An electric device configured to be connectable to a first battery pack including plural battery cells, a positive terminal and a negative terminal, and connectable to a second battery pack including plural battery cells, a positive terminal and a negative terminal, the electric device comprising: a first positive terminal configured to be connected to the positive terminal of the first battery pack; a first negative terminal configured to be connected to the negative terminal of the first battery pack; a second positive terminal configured to be connected to the positive terminal of the second battery pack; a second negative terminal configured to be connected to the negative terminal of the second battery pack; a first control signal terminal configured to receive one of a signal indicative of the number of the plural battery cells of the first battery pack and a signal supplied from a first protection circuit for protecting the plural battery cells of the first battery pack; a second control signal terminal configured to receive one of a signal indicative of the number of the plural battery cells of the second battery pack and a signal supplied from a second protection circuit for protecting the plural battery cells of the second battery pack; a switching element connected to a current path between the first and second positive terminals and the first and second negative terminals; and a controller configured to control the switching element to be turned off based on the signal input to one of the first and second control signal terminal.