A battery module for a system for the storage of electrical energy for an electric drive vehicle. The battery module has: a group of chemical batteries arranged parallel to and beside one another; at least two connection plates which rest against opposite ends of the group of chemical batteries so as to electrically connect the poles of the chemical batteries to one another; two support bodies coupled to opposite ends of the group of chemical batteries so as to provide the chemical batteries with a stable mechanical support; two lids, which are coupled to the support bodies so as to create respective collecting chambers having at least one draining opening; and at least two tie rods, which are arranged on opposite sides of the battery module and tie together the lids and the support bodies in a packed manner.

A power battery pack, includes first housing includes a first main portion having a first fixing surface and a first connection surface; a number of first receiving portions extending upwardly from the first fixing surface; a number of first limiting portions extending upwardly from the first connection surface; a second housing comprising a second main portion having a second fixing surface and a second connection surface; a number of second receiving portions extending upwardly from the second fixing surface; a number of second limiting portions extending upwardly from the second connection surface; a number of single batteries; two ends of each single battery being received in a first receiving portion and a respective second receiving portion; two electrode board assemblies respectively received in a first limiting portion; and a number of intermediate board assemblies each received in a first limiting portion or a second limiting portion.

The invention relates to a cell coil (30, 40, 50, 60, 100, 200) for a lithium-ion battery, comprising at least two sub-cells (10, 32, 42, 44, 52, 54, 68, 70, 80, 82), which are wound in a space-saving manner and are thermally coupled to each other. According to the invention, the at least two sub-cells (10, 32, 42, 44, 52, 54, 68, 70, 80, 82) are electrically connected in parallel in normal operation, and, in the event of a fault, in particular in the event of an internal short circuit in at least one defective sub-cell (10, 32, 42, 44, 52, 54, 68, 70, 80, 82), at least one defective sub-cell (10, 32, 42, 44, 52, 54, 68, 70, 80, 82) can be electrically separated from the at least one intact sub-cell (10, 32, 42, 44, 52, 54, 68, 70, 80, 82). Because of the at least one defective sub-cell (10, 32, 42, 44, 52, 54, 68, 70, 80, 82) that can be immediately electrically separated from the intact sub-cells (10, 32, 42, 44, 52, 54, 68, 70, 80, 82) by means of an electronic monitoring device (36) in the “event of a fault”, a high level of robustness of the cell coil (30, 40, 50, 60, 100, 200) in respect of internal short circuits is achieved. Among other things, the intact sub-cells (10, 32, 42, 44, 52, 54, 68, 70, 80, 82) act, because of the thermal coupling between the sub-cells (10, 32, 42, 44, 52, 54, 68, 70, 80, 82), as a damage-reducing heat sink for the waste heat that is released during the fast discharge of the affected defective sub-cell (10, 32, 42, 44, 52, 54, 68, 70, 80, 82) generally occurring in the event of a short circuit.

Embodiments of the present invention relate to modular devices. The modular device comprises an enclosure having a main body and an extending member. A battery positioned at least within the main body. The extending member includes a coupling element. The coupling element is designed to provide electrical communication with another extending member when the extending member and the other extending member are in communication with each other. The coupling element is designed to provide structural support when in communication with the other extending member. The coupling element is in electrical communication with the battery. The modular device is designed in a manner to couple with another modular device via the coupling element.

A connector for connecting cells of a battery unit is disclosed. The connector comprises a carrier having weld openings, a cover covering the weld openings, a contact disposed in the carrier, a film connector disposed along an edge of the carrier, and a film conductor disposed in the carrier and contacting the contact and the film connector.

A connector for connecting cells of a battery unit is disclosed. The connector comprises a carrier having weld openings, a cover covering the weld openings, a contact disposed in the carrier, a film connector disposed along an edge of the carrier, and a film conductor disposed in the carrier and contacting the contact and the film connector.

A modular power storage and supply system having a plurality of stacked frame members retaining a plurality of pouch cells, each of the frame members having a pair of pressure contact members abutting the cell tab terminals of the pouch cells, the pressure contact members and cell tab terminals being approximately equal in contact surface area, the frame members being separated by a gap, the system having a compression mechanism that applies pressure to the combination of pressure contact members and cell tab terminals.

A secondary battery module includes a plurality of battery blocks each obtained by stacking a plurality of battery cells. The secondary battery module includes a holding member adapted to hold the plurality of battery blocks and including a pair of opposed end plates, a pair of opposed side plates, and a section plate arranged between the adjacent battery blocks to partition the battery blocks; and an inter-block bus bar provided across the section plate and adapted to electrically connect the adjacent battery blocks. The inter-block bus bar has a fuse portion.

In order to create a module connector for electrically conductively connecting at least two battery modules, comprising a connecting conductor, which has a contact region that is arrangeable on a contact element of a battery module, in which module connector a sufficient contact protection for a fastening element is ensured in a simple and reliable manner, it is proposed that the module connector comprises a contact protection element, which at least partially covers the contact region of the connecting conductor, and a fastening element for fixing the contact region of the connecting conductor to the contact element, wherein the fastening element in a rest position is held on the contact protection element and is transferable from the rest position into an assembly position in which a contact protection is provided for at least a protected part of the fastening element by the contact protection element.

In order to create a module connector for electrically conductively connecting at least two battery modules, comprising a connecting conductor, which has a contact region that is arrangeable on a contact element of a battery module, in which module connector a sufficient contact protection for a fastening element is ensured in a simple and reliable manner, it is proposed that the module connector comprises a contact protection element, which at least partially covers the contact region of the connecting conductor, and a fastening element for fixing the contact region of the connecting conductor to the contact element, wherein the fastening element in a rest position is held on the contact protection element and is transferable from the rest position into an assembly position in which a contact protection is provided for at least a protected part of the fastening element by the contact protection element.