Battery protection systems

A method for protecting a battery pack, said method comprising:

• activating a sensor to generate a sense signal indicative of a temperature in said battery pack;
• generating, using a primary protection circuit coupled to said sensor, a synchronizing signal in one of a first state and a second state to control a secondary protection circuit coupled to said primary protection circuit and said sensor;
• sampling, using said primary protection circuit, said sense signal when said synchronizing signal is in said first state;
• providing, using said primary protection circuit, primary protection to said battery pack based on said sense signal when said synchronizing signal is in said first state;
• sampling, using said secondary protection circuit, said sense signal when said synchronizing signal is in said second state;
• and
• providing, using said secondary protection circuit, secondary protection to said battery pack based on said sense signal when said synchronizing signal is in said second state.

A battery pack comprising:

• a plurality of battery cells;
• and
• a battery protection system coupled to said battery cells, wherein said battery protection system comprises:
• a sensor configured to generate a sense signal indicative of temperature in said battery pack when said sensor is activated;
• a primary protection circuit, coupled to said sensor, and configured to generate a synchronizing signal in one of a first state and a second state, sample said sense signal when said synchronizing signal is in said first state, and provide primary protection to said battery pack based on said sense signal when said synchronizing signal is in said first state;
• and
• a secondary protection circuit, coupled to said primary protection circuit and said sensor, and configured to be controlled by said synchronizing signal, sample said sense signal when said synchronizing signal is in said second state, and provide secondary protection to said battery pack based on said sense signal when said synchronizing signal is in said second state.