The present invention relates to a battery module comprising: a plurality of battery cells disposed to overlap each other in a thickness direction thereof; a battery case configured to accommodate the battery cells and having a structure of which a lower portion is opened; and a heat dissipation member comprising a cover plate coupled to the lower portion of the battery case to support the battery cell and a heat dissipation body provided on one surface of the cover plate, on which the battery cell is supported, to dissipate heat generated in the battery cell, wherein the heat dissipation body comprises a first heat transfer material provided to be connected to a center of one surface of the cover plate in a longitudinal direction of the battery cell and a second heat transfer material provided on both portions of the first heat transfer material and having a structure aligned in a plurality of rows in the longitudinal direction of the battery cell, and the second heat transfer materials are aligned so that an interval therebetween is gradually narrowed from a center toward both ends of the battery cell to gradually improve heat dissipation performance from the center toward both the ends of the battery cell.

A battery pack that includes an enclosure having at least four sidewalls and a base. An array of cells is arranged on the base, with each of the cells having a large wall surface and a small wall surface. The cells are arranged such that the large wall surfaces are parallel to each other. Components of the enclosure are made from an extrusion process and are mechanically attached or welded together. A base of the enclosure has fluid channels formed from the extrusion for use in cooling the array of cells.

A battery module having a plurality of prismatic battery cells, in particular lithium-ion battery cells, which are arranged next to one another in a longitudinal direction of the battery module and furthermore a first temperature-control element is thermally conductively connected to in each case one side surface of the plurality of battery cells, and wherein the plurality of battery cells are received in an interior of a housing of the battery module and additionally a bottom surface of the housing of the battery module and a bottom surface of the battery cells are respectively cohesively connected to one another, the housing comprises a second temperature-control element directly adjacent to the bottom surfaces of the plurality of battery cells, and a compressing element and/or a supporting element is arranged between the housing and the plurality of battery cells in the longitudinal direction of the battery module.

A battery module having a plurality of prismatic battery cells, in particular lithium-ion battery cells, which are arranged next to one another in a longitudinal direction of the battery module and furthermore a first temperature-control element is thermally conductively connected to in each case one side surface of the plurality of battery cells, and wherein the plurality of battery cells are received in an interior of a housing of the battery module and additionally a bottom surface of the housing of the battery module and a bottom surface of the battery cells are respectively cohesively connected to one another, the housing comprises a second temperature-control element directly adjacent to the bottom surfaces of the plurality of battery cells, and a compressing element and/or a supporting element is arranged between the housing and the plurality of battery cells in the longitudinal direction of the battery module.

A battery module comprising a plurality of battery cells (2), which are each connected electrically conductively in series and/or in parallel with one another, and comprising a switching device (3), which has a first terminal (31) and a second terminal (32), wherein a first electrically conductive connecting element (41) connects the first terminal (31) of the switching device (3) electrically conductively to a first terminal (51) of a fuse element (5), and a second terminal (52) of the fuse element (5) is electrically conductively connected to a voltage tap (61) of a terminally arranged battery cell (2, 21), and a second electrically conductive connecting element (42) connects the second terminal (32) of the switching device (3) electrically conductively to a voltage tap (62) of the battery module (1).

A battery pack includes a battery assembly and a tray. The battery assembly includes at least one battery unit, and the battery unit includes multiple cells, where the length direction of each cell is a first direction, and the multiple cells are disposed along a second direction. The tray includes at least one temperature adjustment unit, where the temperature adjustment unit includes a temperature adjustment flow channel and a confluence flow channel. Any one of the temperature adjustment flow channels is configured to exchange heat with at least one of the cells disposed along the second direction, and to exchange heat with at most one cell disposed along the first direction.

A battery pack includes a battery assembly and a tray. The battery assembly includes at least one battery unit, and the battery unit includes multiple cells, where the length direction of each cell is a first direction, and the multiple cells are disposed along a second direction. The tray includes at least one temperature adjustment unit, where the temperature adjustment unit includes a temperature adjustment flow channel and a confluence flow channel. Any one of the temperature adjustment flow channels is configured to exchange heat with at least one of the cells disposed along the second direction, and to exchange heat with at most one cell disposed along the first direction.

A battery pack includes a battery module group including a plurality of battery modules, a coolant layer configured to allow a coolant to circulate, and a refrigerant layer configured to allow a refrigerant to circulate. The coolant layer includes a first surface and a second surface opposite to the first surface. The refrigerant layer includes a third surface and a fourth surface opposite to the third surface. The first surface of the coolant layer is closer to the battery module group than the second surface of the coolant layer. The third surface of the refrigerant layer is closer to the battery module group than the fourth surface of the refrigerant layer. The battery module group is arranged along the first surface of the coolant layer. At least part of the coolant layer is arranged between the refrigerant layer and the battery module group in a plan view.

A battery pack includes a battery module group including a plurality of battery modules, a coolant layer configured to allow a coolant to circulate, and a refrigerant layer configured to allow a refrigerant to circulate. The coolant layer includes a first surface and a second surface opposite to the first surface. The refrigerant layer includes a third surface and a fourth surface opposite to the third surface. The first surface of the coolant layer is closer to the battery module group than the second surface of the coolant layer. The third surface of the refrigerant layer is closer to the battery module group than the fourth surface of the refrigerant layer. The battery module group is arranged along the first surface of the coolant layer. At least part of the coolant layer is arranged between the refrigerant layer and the battery module group in a plan view.

A cell case of a secondary battery comprised of a can body to which a can bottom is double seamed, in which cell case, it is possible to solve the problem of the drop in cooling efficiency due to the presence of a double seam when cooling such a cell case by a cooling device or using a cooling sheet, and a battery module having a plurality of such cell cases are provided. That is, a cell case of a secondary battery having a rectangular tube-shaped can body, a can bottom double seamed to a bottom end of the can body, and a can lid double seamed to a top end of the can body, in which cell case of a secondary battery, an area ratio 51 of part of the can bottom, comprised of a portion 1 between a plane vertical to the can body a distance of 0.5 mm above a bottom end of a double seam of the can body and the can bottom and a plane vertical to the can body a distance of 1.0 mm below the bottom end of the double seam, with respect to a cross-sectional area of the can body at the bottom end of the double seam is 50% or more, and a battery module having a plurality of such cell cases are provided.