The invention relates to a portable charging protection device with B type leakage protection

The invention provides a portable charging protection device with B-type leakage protection, which is used to protect the new energy vehicle and the human body when charging the new energy vehicle. It comprises B-type leakage transformer, the first relay connected to the fire line, the second relay connected to the zero line (the zero line of the fire line runs through the B-type leakage transformer), the B-type leakage detection execution controller connected to the B-type leakage transformer, and the main controller of the charging device connected to the first relay, the second relay and the B-type leakage detection execution controller respectively. The invention can detect the leakage signals including AC type, A type and B type during charging, and make protective measures whether to charge according to the leakage signals, so as to realize the role of protecting the safety of new energy vehicles and human body.