Sampling component, battery and electric device

The utility model provides a sampling part, a battery and a power utilization device, the sampling part comprises a main body part and a lap joint part, the main body part is used for transmitting sampling signals, the lap joint part comprises a connecting part and a sampling end, the connecting part is connected with the sampling end and the main body part, one end of the connecting part is detachably and electrically connected with the sampling end or the main body part, the sampling end is in lap joint with a to-be-sampled point, and the sampling end is connected with the to-be-sampled point. The connecting part is used for collecting sampling signals, and a fusing structure is arranged on the connecting part and used for conducting fusing protection on the main body part.