Energy accumulator module

Abstract

An energy storage module having a plurality of stacked flat cells. The energy storage module has an interconnection formed in such a way that the energy storage module can be connected mechanically, electrically and/or for exchanging coolant with at least one other energy storage module of the same kind.

1 . An energy storage module comprising a plurality of stacked flat cells ( 12 ), wherein the energy storage module has interconnection means ( 20 ,  40 ,  42 ,  42 ′) formed in such a way that the energy storage module can be connected mechanically, electrically and/or for exchanging coolant with at least one other energy storage module of the same kind. 
     
     
         2 . The energy storage module according to  claim 1 ,
 wherein the energy storage module at a first end face side has first mechanical, electrical and/or coolant interconnection means ( 20 ,  40 ,  42 ,  42 ′), wherein the energy storage module at a second end face side opposing the first end face side has second mechanical, electrical and/or coolant interconnection means ( 20 ,  40 ,  42 ,  42 ′), respectively, and wherein the first interconnection means ( 20 ,  40 ,  42 ,  42 ′) and the second interconnection means ( 20 ,  40 ,  42 ,  42 ′) are arranged at symmetrical positions with respect to one another and formed in mutually complementary shapes.   
     
     
         3 . The energy storage module according to  claim 1 ,
 wherein the flat-cell stack ( 12 ) is held together by a fixing arrangement ( 28 ,  30 ) comprising two pressure plates ( 28 ), which are associated with opposing end face sides of the flat-cell stack ( 12 ′) and connected to one another by means of at least one resilient element ( 30 ).   
     
     
         4 . The energy storage module according to  claim 3 ,
 wherein each of the pressure plates ( 28 ) has at least one attachment flange ( 40 ), by means of which the energy storage module can be attached to another energy storage module of the same kind.   
     
     
         5 . The energy storage module according to  claim 4 ,
 wherein at least one first resilient element ( 30 ) extends along a first longitudinal side of the flat-cell stack ( 12 ′) between the two pressure plates ( 28 ), wherein at least one second resilient element ( 30 ) extends along a second longitudinal side of the flat-cell stack ( 12 ′) between the two pressure plates ( 28 ), wherein the first resilient element ( 30 ) and the second resilient element ( 30 ) are preferably arranged at complementary positions with respect to one another, in particular at different heights.   
     
     
         6 . The energy storage module according to  claim 5 ,
 wherein the pressure plates ( 28 ) have attachment segments ( 32 ,  32 ′) arranged at two opposing sides for attaching the resilient elements ( 30 ), wherein the attachment segments ( 32 ,  32 ′) protrude, in the plane of the respective pressure plate ( 28 ), beyond the pressure plate ( 28 ) and the flat-cell stack ( 12 ′), wherein the attachment segments ( 32 ,  32 ′) are arranged at complementary positions with respect to one another.   
     
     
         7 . The energy storage module according to  claim 1 ,
 wherein at least some of the interconnection means ( 20 ,  40 ,  42 ,  42 ′) are plug-in connectors, which are detachable.   
     
     
         8 . The energy storage module according to  claim 1 ,
 wherein the energy storage module has a connection unit ( 18 ) which interconnects the flat cells ( 12 ) at least electrically and is formed in particular as a plate extending in a plane perpendicular to the respective extension plane of the flat cells ( 12 ).   
     
     
         9 . The energy storage module according to  claim 8 ,
 wherein electrical interconnection means ( 20 ) are arranged at the connection unit ( 18 ), wherein the electrical interconnection means ( 20 ) are formed as a plug and a socket, respectively.   
     
     
         10 . The energy storage module according to  claim 1 ,
 wherein the energy storage module has at least one coolant duct ( 26 ) opening into a coolant inlet ( 42 ,  42 ′) at a first end face side of the energy storage module and into a coolant outlet ( 42 ′ and  42 , respectively) at a second end face side of the energy storage module.   
     
     
         11 . The energy storage module according to  claim 10 ,
 wherein the coolant duct ( 26 ) extends either perpendicularly or in parallel to the flat cells ( 12 ).   
     
     
         12 . The energy storage module according to  claim 1 ,
 wherein cooling elements ( 22 ) are arranged between the flat cells ( 12 ).   
     
     
         13 . An energy storage unit comprising at least two energy storage modules ( 10 ,  10 ′,  10 ″) each comprising a plurality of stacked flat cells ( 12 ), wherein the energy storage module has interconnection means ( 20 ,  40 ,  42 ,  42 ′) formed in such a way that the energy storage module can be connected mechanically, electrically and/or for exchanging coolant with at least one other energy storage module of the same kind. 
     
     
         14 . The energy storage unit according to  claim 13 ,
 wherein three energy storage modules ( 10 ,  10 ′,  10 ″) are provided which can be arranged in a two-dimensional or three-dimensional matrix.   
     
     
         15 . The energy storage unit according to  claim 13 ,
 wherein at least one adapter means is provided for connecting at least two energy storage modules ( 10 ,  10 ′,  10 ″) to one another.   
     
     
         16 . The energy storage unit according to  claim 13 ,
 wherein the flat-cell stacks ( 12 ) of the energy storage modules ( 10 ,  10 ′,  10 ″) are arranged in a row and functionally coupled to one another are arranged one after another.   
     
     
         17 . The energy storage unit according to  claim 13 ,
 wherein the flat-cell stacks ( 12 ′) of energy storage modules ( 10 ,  10 ′,  10 ″) arranged in a row and functionally coupled to one another are arranged side by side.   
     
     
         18 . The energy storage unit according to  claim 13 , wherein each of the energy storage modules ( 10 ,  10 ′,  10 ″) have a flat-cell stack wherein the flat-cell stack ( 12 ) is held together by a fixing arrangement ( 28 ,  30 ) comprising two pressure plates ( 28 ), which are associated with opposing end face sides of the flat-cell stack ( 12 ′) and connected to one another by means of at least one resilient element ( 30 ), wherein the pressure plates ( 28 ) of the two energy storage modules ( 10 ,  10 ′,  10 ″) are coupled mechanically to one another. 
     
     
         19 . The energy storage unit according to  claim 18 , wherein the pressure plates ( 28 ) have attachment segments ( 32 ,  32 ′) arranged at two opposing sides for attaching the resilient elements ( 30 ), wherein the attachment segments ( 32 ,  32 ′) protrude, in the plane of the respective pressure plate ( 28 ), beyond the pressure plate ( 28 ) and the flat-cell stack ( 12 ′), wherein the attachment segments ( 32 ,  32 ′) are arranged at complementary positions with respect to one another.