Battery Module with Battery Module Housing and Battery Cells

Abstract

A battery module comprises a battery module housing with parts made of plastic and a plurality of prismatic battery cells that have a cell housing with four side walls. Two parallel side walls are larger than the two other side walls. The electrolyte of the battery cells is preferably SO 2 -based.

1 .- 23 . (canceled) 
     
     
         24 . A battery module comprising a battery module housing with parts made of plastic and a plurality of prismatic battery cells that have a cell housing with four side walls, two parallel side walls being larger than the two other side walls,
 wherein   the battery module housing has a cooling system with a channel structure and a fluid coolant,   the channel structure has a fluid connection with a coolant inlet and a coolant outlet of the battery module housing,   an intermediate wall made of plastic is located between two adjacent battery cells essentially parallel to the larger side walls of the battery cell,   one channel of the channel structure runs at least partially in the intermediate wall and is formed by means of a recess in the intermediate wall that is open at least to one adjacent side wall of the battery cell,   a plastic separating layer, whose thickness is less than the thickness of the intermediate wall, is arranged between the side wall of the battery cell and the intermediate wall in such a manner that the channel of the cooling system formed by the recess is closed by the plastic separating layer.   
     
     
         25 . The battery module according to  claim 24 , wherein said plastic separating layer material is different from the material of the intermediate wall. 
     
     
         26 . The battery module according to  claim 24 , wherein the intermediate wall has an intermediate wall side wall that is part of a side wall of the battery module housing. 
     
     
         27 . The battery module according to  claim 24 , wherein the intermediate wall comprises holding elements to hold an adjacent battery cell. 
     
     
         28 . The battery module according to  claim 27 , wherein said holding elements being at least parts of an intermediate wall side wall, an intermediate wall base and/or a top side of the intermediate wall. 
     
     
         29 . The battery module according to  claim 24 , wherein the electrolyte of the battery cells is SO 2 -based. 
     
     
         30 . The battery module according to  claim 24 , wherein the plastic of the battery module housing parts is fiber-reinforced. 
     
     
         31 . The battery module according to  claim 24 , wherein the plastic of the battery module housing parts is glass-fiber-reinforced or a glass-fiber-reinforced polyamide. 
     
     
         32 . The battery module according to  claim 24 , wherein the plastic of the battery module housing parts or the plastic of the intermediate wall is thermoplastic. 
     
     
         33 . The battery module according to  claim 24 , wherein the thickness of the intermediate wall is no more than 20 mm, or no more than 10 mm, or no more than 7 mm, or no more than 5 mm, or no more than 4 mm or no more than 3 mm. 
     
     
         34 . The battery module according to  claim 24 , wherein the recess of the channel structure in the intermediate wall has a meander-type form and that the meander extends from a lower area of the intermediate wall to an upper area of the intermediate wall. 
     
     
         35 . The battery module according to  claim 24 , wherein the meander of the channel has increasingly narrow meander loops in the flow direction of the coolant. 
     
     
         36 . The battery module according to  35 , wherein said meander loops become narrower towards the upper area of the intermediate wall. 
     
     
         37 . The battery module according to  claim 24 , wherein the recess in the channel structure extends over the entire thickness of the intermediate wall and is open towards the two adjacent walls of the battery cells. 
     
     
         38 . The battery module according to  claim 24 , wherein the thickness of the plastic separating layer is no more than 20%, or no more than 10%, or no more than 5% of the thickness of the intermediate wall. 
     
     
         39 . The battery module according to  claim 24 , wherein the thickness of the plastic separating layer is no more than 1 mm, or no more than 0.5 mm, or no more than 0.1 mm. 
     
     
         40 . The battery module according to  claim 24 , wherein a plurality of battery cells and the intermediate walls located between them are encompassed by a clamping device. 
     
     
         41 . The battery module according to  claim 40 , wherein said clamping device is made of metal, which absorbs the forces exerted by the battery cells during operation. 
     
     
         42 . The battery module according to  claim 24 , wherein the clamping device comprises a metal tension band. 
     
     
         43 . The battery module according to  claim 42 , wherein the metal tension band is laser-welded or has a self-retaining or self-locking, quick-release closure. 
     
     
         44 . The battery module according to  claim 24 , wherein the coolant inlet and/or the coolant outlet comprises a quick-action coupling for simple connection without tools to an external cooling system. 
     
     
         45 . The battery module according to  claim 24 , wherein the battery module housing has a top cover plate, which is located above the battery cells, being positioned transversely with respect to the side walls of the battery module housing, and which has a filling connection opening for an electrolyte filling connection for filling the battery cells with the electrolyte, said cover plate having a trough-type recess on its top side that adjoins the filling connection opening. 
     
     
         46 . The battery module according to  claim 24 , wherein the intermediate wall has one intermediate wall side wall each on its short side ends, which project at least partially beyond the small side walls of the cell housing. 
     
     
         47 . The battery module according to  claim 46 , wherein the intermediate wall side wall forms a battery module housing side wall together with other intermediate wall side walls. 
     
     
         48 . The battery module according to  claim 47 , wherein the intermediate wall side walls correspond with each other in such a manner that they engage in each other and/or lock together with each other. 
     
     
         49 . The battery module according to  claim 24 , wherein the intermediate wall has an intermediate wall base, which projects at least partially under the battery cells. 
     
     
         50 . The battery module according to  claim 49 , wherein the intermediate wall base forms the base of the battery module housing together with other intermediate wall bases. 
     
     
         51 . The battery module according to  claim 49 , wherein the intermediate wall bases correspond with each other in such a manner that they engage with each other and/or lock together with each other. 
     
     
         52 . The battery module according to  claim 24 , wherein
 the battery module housing has two end walls, which are essentially arranged parallel to the larger side walls of the battery cells;   the end walls have a channel that is open to their inner sides which is part of the channel structure;   
       and
 one end wall is the rear wall and the other end wall the front wall. 
 
     
     
         53 . The battery module according to  claim 52 , wherein the coolant inlet and/or coolant outlet is located on the front wall. 
     
     
         54 . The battery module according to  claim 52 , wherein the end walls have rib-like reinforcements on their outer sides. 
     
     
         55 . The battery module according to  claim 52 , wherein the end wall comprises a closing wall and an outer wall,
 the closing wall has a channel on its inner side that is open on one side which is part of the channel structure.   
     
     
         56 . The battery module according to  claim 55 , wherein the end wall comprises a closing wall and an outer wall,
 the outer side of the closing wall has an essentially plane surface, and/or   the closing wall has a positioning element for fixing the relative position with respect to the outer wall and/or the intermediate wall; and/or   the outer wall has oblong recesses on its outer side; and/or   the outer wall is made of metal or of aluminum.   
     
     
         54 . Use of the battery module according to  claim 24   in a motor vehicle,   for energy storage and energy feeding into a medium- and/or low-voltage network,   for decentralized energy storage in combination with installations for exploiting renewable energies,   as an uninterruptible power supply (UPS) or an emergency power supply; or   for stabilization of isolated networks.   
     
     
         58 . Motor vehicle with a battery module according to  claim 24 .