An isolation board assembly, comprising: an isolation board; a plurality of electrical connection pieces, each electrical connection piece being fixed to the isolation board; wherein the isolation board comprises: a plurality of supporting portions formed on both sides of the isolation board in a width direction, and multiple supporting portions on the same side of the isolation board in the width direction are spaced apart from each other in a length direction; and a plurality of first limiting portions, each first limiting portion and the corresponding supporting portion form an interval therebetween in a height direction; each electrical connection piece comprises: a first end portion; and a second end portion disposed opposite to the first end portion in the width direction; the first end portion of each electrical connection piece is received in the corresponding interval, clamped and fixed by the corresponding first limiting portion and the corresponding supporting portion, and the second end portion of each electrical connection piece extends out of the corresponding supporting portion in the width direction; the isolation board further comprises a plurality of elastic latching members, each elastic latching member and the corresponding first limiting portion are spaced apart from each other in the height direction, and each elastic latching member is latched to the first end portion of the corresponding electrical connection piece; characterized in that each electrical connection piece is provided with a through hole passing through the first end portion of each electrical connection piece in the height direction; each elastic latching member comprises: a main body portion; and a latching portion protruding from the main body portion in the height direction; the main body portion of each elastic latching member and the corresponding first limiting portion clamp and fix the first end portion of the corresponding electrical connection piece, and the latching portion of each elastic latching member is latched to the corresponding electrical connection piece via the through hole of the corresponding electrical connection piece. an isolation board; a plurality of electrical connection pieces, each electrical connection piece being fixed to the isolation board; wherein the isolation board comprises: a plurality of supporting portions formed on both sides of the isolation board in a width direction, and multiple supporting portions on the same side of the isolation board in the width direction are spaced apart from each other in a length direction; and a plurality of first limiting portions, each first limiting portion and the corresponding supporting portion form an interval therebetween in a height direction; each electrical connection piece comprises: a first end portion; and a second end portion disposed opposite to the first end portion in the width direction; the first end portion of each electrical connection piece is received in the corresponding interval, clamped and fixed by the corresponding first limiting portion and the corresponding supporting portion, and the second end portion of each electrical connection piece extends out of the corresponding supporting portion in the width direction; the isolation board further comprises a plurality of elastic latching members, each elastic latching member and the corresponding first limiting portion are spaced apart from each other in the height direction, and each elastic latching member is latched to the first end portion of the corresponding electrical connection piece; characterized in that each electrical connection piece is provided with a through hole passing through the first end portion of each electrical connection piece in the height direction; each elastic latching member comprises: a main body portion; and a latching portion protruding from the main body portion in the height direction; the main body portion of each elastic latching member and the corresponding first limiting portion clamp and fix the first end portion of the corresponding electrical connection piece, and the latching portion of each elastic latching member is latched to the corresponding electrical connection piece via the through hole of the corresponding electrical connection piece.