A battery pack, comprising: a plurality of battery cells arranged side by side; electrical connection components arranged on the ends of the plurality of battery cells, each having electrode receiving sockets and FPC receiving sockets arranged thereon, the electrode receiving sockets are adapted to be electrically connected with a plurality of electrode posts of the plurality of battery cells; and a plurality of FPCs (flexible circuit boards) corresponding to the plurality of battery cells, with which the FPC receiving sockets are adapted to be electrically connected; wherein each electrical connection component is further provided with a BDU (Battery Disconnect Unit) connecting socket and a BMS connecting socket, a BDU of the battery pack is connected with the BDU connecting socket and electrically connected with the electrode posts of the plurality of battery cells via the electrical connection component, and a BMS of the battery pack is connected with the BMS connecting socket and electrically connected with the plurality of FPCs via the electrical connection component; wherein each electrical connection component comprises a casing and electrical connection assemblies stacked in the casing each comprising a connection strap assembly, the casing is connected with the plurality of battery cells, each connection strap assembly comprises a high-voltage connection strap, a front-end connection strap, and a tail-end connection strap, each electrode receiving socket comprises a positive electrode receiving socket and a negative electrode receiving socket, the high-voltage connection strap is electrically connected between a positive electrode receiving socket and the negative electrode receiving socket of an adjacent electrode receiving socket, one end of the front-end connection strap is electrically connected with the negative electrode connecting socket of the front-most battery cell, the other end of the front-end connection strap is electrically connected with the negative electrode connecting socket in the BDU connecting socket, one end of the tail-end connection strap is electrically connected with the positive electrode receiving socket of the rearmost battery cell, and the other end of the tail-end connection strap is electrically connected with the positive electrode connecting socket in the BDU connecting socket. a plurality of battery cells arranged side by side; electrical connection components arranged on the ends of the plurality of battery cells, each having electrode receiving sockets and FPC receiving sockets arranged thereon, the electrode receiving sockets are adapted to be electrically connected with a plurality of electrode posts of the plurality of battery cells; and a plurality of FPCs (flexible circuit boards) corresponding to the plurality of battery cells, with which the FPC receiving sockets are adapted to be electrically connected; wherein each electrical connection component is further provided with a BDU (Battery Disconnect Unit) connecting socket and a BMS connecting socket, a BDU of the battery pack is connected with the BDU connecting socket and electrically connected with the electrode posts of the plurality of battery cells via the electrical connection component, and a BMS of the battery pack is connected with the BMS connecting socket and electrically connected with the plurality of FPCs via the electrical connection component; wherein each electrical connection component comprises a casing and electrical connection assemblies stacked in the casing each comprising a connection strap assembly, the casing is connected with the plurality of battery cells, each connection strap assembly comprises a high-voltage connection strap, a front-end connection strap, and a tail-end connection strap, each electrode receiving socket comprises a positive electrode receiving socket and a negative electrode receiving socket, the high-voltage connection strap is electrically connected between a positive electrode receiving socket and the negative electrode receiving socket of an adjacent electrode receiving socket, one end of the front-end connection strap is electrically connected with the negative electrode connecting socket of the front-most battery cell, the other end of the front-end connection strap is electrically connected with the negative electrode connecting socket in the BDU connecting socket, one end of the tail-end connection strap is electrically connected with the positive electrode receiving socket of the rearmost battery cell, and the other end of the tail-end connection strap is electrically connected with the positive electrode connecting socket in the BDU connecting socket.