Battery module and manufacturing method thereof

A battery module manufacturing method, comprising:

• disposing a middle plate between two battery groups, wherein the middle plate is provided with an accommodating groove inside;
• and
• disposing a cell management unit in the accommodating groove of the middle plate, wherein the cell management unit comprises a housing and a cell management circuit board disposed in the housing, and the housing is provided with fixing lugs;
• and
• fixing the fixing lugs to a top of the middle plate.

A battery module, comprising:

• two or more battery groups, wherein each battery group comprises two or more battery cells;
• a module frame, comprising end plates and side plates, wherein the end plates and the side plates form an accommodating cavity for fixing the battery groups;
• a middle plate, wherein the middle plate is disposed between two of the battery groups, and is provided with an accommodating groove inside;
• and
• a cell management unit, disposed in the accommodating groove of the middle plate and connected to a sampling line of the battery cells,
• wherein the cell management unit comprises a cell management circuit board and a housing, and the cell management circuit board is disposed in the housing;
• and
• wherein the housing is provided with fixing lugs, and the fixing lugs are fixed to the top of the middle plate by using fasteners.