The invention belongs to the technical field of a battery product, and particularly relates to a lithium battery energy storage module and a lithium battery energy storage module group. The lithium battery energy storage module comprises a battery cell, a battery cell support and a busbar, wherein a tab of the battery cell is fixedly arranged on a tab fixed part of the battery cell support, the busbar comprises a first busbar plate, a second busbar plate and a connection plate, the first busbar plate and the second busbar plate are welded with the tab of the battery cell arranged on the battery cell support, and the connection plate is fixedly connected with the tab fixed part. The special busbar is arranged and is used for connecting in series and in parallel each battery cell on the battery cell support, the electrical contact area of the battery cell during busbar can be reasonably set by controlling sizes of the first convergence plate and the second convergence plate, so that theeffective and electrical contact are among the battery cells is ensured, energy loss caused by overheat of the lithium battery energy storage module is prevented, favorable thermal control of the energy storage module is facilitated, and meanwhile, the energy storage application efficiency of the energy storage module is improved.