A battery cell, comprising: a shell, comprising a first wall; an electrode terminal, dielectrically mounted on the first wall; an electrode assembly, accommodated in the shell, wherein the electrode assembly comprises a center hole, and a first tab is formed at an end of the electrode assembly, the end being oriented toward the first wall; and a current collection component, disposed between the first wall and the electrode assembly, wherein the current collection component comprises a center portion and a periphery portion, the center portion positionally corresponds to the center hole, the center portion is configured to be connected to the electrode terminal, and the periphery portion is configured to be connected to the first tab; and a guide channel is disposed on the current collection component, and the guide channel is configured to guide an electrolytic solution in the center hole to diffuse from the center portion to the periphery portion, wherein the guide channel is a first through-hole, and the first through-hole is located at an edge of the center portion, characterized by a second through-hole is made on the periphery portion, and the second through-hole is farther away from the center portion than the first through-hole, and a first groove is made on a side of the periphery portion, the side being away from the electrode assembly; and the first groove is configured to communicate with the first through-hole and the second through-hole, and/or an insulator, disposed between the current collection component and the first wall, and configured to dielectrically insulate the current collection component from the first wall; wherein a second groove is made on a side of the insulator, the side being oriented toward the current collection component; and the second groove is configured to communicate with the first through-hole and the second through-hole. a shell, comprising a first wall; an electrode terminal, dielectrically mounted on the first wall; an electrode assembly, accommodated in the shell, wherein the electrode assembly comprises a center hole, and a first tab is formed at an end of the electrode assembly, the end being oriented toward the first wall; and a current collection component, disposed between the first wall and the electrode assembly, wherein the current collection component comprises a center portion and a periphery portion, the center portion positionally corresponds to the center hole, the center portion is configured to be connected to the electrode terminal, and the periphery portion is configured to be connected to the first tab; and a guide channel is disposed on the current collection component, and the guide channel is configured to guide an electrolytic solution in the center hole to diffuse from the center portion to the periphery portion, wherein the guide channel is a first through-hole, and the first through-hole is located at an edge of the center portion, characterized by a second through-hole is made on the periphery portion, and the second through-hole is farther away from the center portion than the first through-hole, and a first groove is made on a side of the periphery portion, the side being away from the electrode assembly; and the first groove is configured to communicate with the first through-hole and the second through-hole, and/or an insulator, disposed between the current collection component and the first wall, and configured to dielectrically insulate the current collection component from the first wall; wherein a second groove is made on a side of the insulator, the side being oriented toward the current collection component; and the second groove is configured to communicate with the first through-hole and the second through-hole.