Communication connector, energy storage battery system and terminal resistance matching method thereof

The invention provides a communication connector, an energy storage battery system and a terminal resistance matching method of the energy storage battery system. When the communication connectors detect that the input ends of the communication connectors are connected to the corresponding battery clusters, the next communication connector is controlled in a linkage mode to cut out the terminal resistors of the corresponding battery clusters, and the arrangement sequence of the communication connectors is the same as the sequence that the input ends of the communication connectors are connected to the corresponding battery clusters. Therefore, when a plurality of battery clusters in the energy storage battery system establish communication with the PCS, terminal resistors of other battery clusters except the battery cluster corresponding to the first communication connector are cut out, so that normal communication between the energy storage battery system and the PCS is ensured; besides, because the househol