A battery cell includes: an inner wall; battery electrodes; a separator; a battery cell; and a heating sheet. The heating sheet may have a structure including a heating unit and insulating films. The heating unit may include a heating element and heating unit electrodes, and the heating sheet may be positioned between the two adjacent battery electrodes or positioned between an outermost battery electrode and the inner wall.

An electrical energy storage unit for a motor vehicle, having at least one storage unit cell designed to store electrical energy, which storage unit cell has a cell housing in which an electrolyte and an electrode device are arranged, and having a temperature control device that has at least one temperature control channel arranged outside the cell housing, which temperature control channel is able to be flowed through by a temperature control fluid in order to control the temperature of the storage unit cell. At least one heating device is able to be supplied with the electrical energy stored in the storage unit cell and thereby able to be electrically operated. By way of the heating device, the storage unit cell is able to be heated, wherein the heating device is able to be operated without any damage only when the storage unit cell has a state of charge that is not more than 60% of the maximum state of charge of the storage unit cell.

A method for heating an energy storage device having a core with an electrolyte, the method including: providing the energy storage device having inputs and characteristics of a capacitance across the electrolyte and the core and internal surface capacitance between the inputs which can store electric field energy between internal electrodes of the energy storage device that are coupled to the inputs; switching between a positive input voltage and a negative input voltage provided to one of the inputs at a frequency sufficient to effectively short the internal surface capacitance of the energy storage device to generate heat and raise a temperature of the electrolyte; and discontinuing the switching when the temperature of the electrolyte is above a predetermined temperature that is considered sufficient to increase a charging efficiency of the energy storage device.

A storage cell for an energy store includes a cell housing in which storage means for storing electric energy are received, at least one connection which is arranged outside of the cell housing and via which the electric energy stored by the storage means can be provided, and at least one electric heating element arranged within the cell housing for heating the storage cell. The cell housing has a connection region, in which the heating element within the cell housing is electrically connected to the cell housing. At least one connection device is provided, having at least one connection element that has a first connection part, which is electrically connected to the cell housing outside of the cell housing and is made of a first material, and a second connection part, which is electrically connected to the first connection part and is made of a second material that differs from the first material.

A storage cell for an energy store includes a cell housing in which storage means for storing electric energy are received, at least one connection which is arranged outside of the cell housing and via which the electric energy stored by the storage means can be provided, and at least one electric heating element arranged within the cell housing for heating the storage cell. The cell housing has a connection region, in which the heating element within the cell housing is electrically connected to the cell housing. At least one connection device is provided, having at least one connection element that has a first connection part, which is electrically connected to the cell housing outside of the cell housing and is made of a first material, and a second connection part, which is electrically connected to the first connection part and is made of a second material that differs from the first material.

A battery pack wherein each battery is mechanically and electrically connected by a magnetic device to a busbar. In case of failure of any accumulator, it is disconnected completely passively because its failure generates an inactivation of the magnetic device. The disconnection causes the gravity drop of the accumulator and the possibly completely passive implementation of an accumulator shunt.

A battery pack wherein each battery is mechanically and electrically connected by a magnetic device to a busbar. In case of failure of any accumulator, it is disconnected completely passively because its failure generates an inactivation of the magnetic device. The disconnection causes the gravity drop of the accumulator and the possibly completely passive implementation of an accumulator shunt.

An electric power module comprises: a plurality of electric power units each of which extends along a longitudinal direction from a first end, including a first electrode, to a second end, including a second electrode; a first panel, including a first plurality of contact elements, each of which is in contact with the first electrode of a corresponding power unit; a second panel, including a second plurality of contact elements, each of which is in contact with the second electrode of a corresponding power unit. In the module, the first panel comprises a first plurality of holes, each of which is aligned, along the longitudinal direction, with a respective contact element of the first plurality of contact elements and with a respective first electrode, and the second panel comprises a second plurality of holes, each of which is aligned, along the longitudinal direction, with a respective contact element of the second plurality of contact elements and with a respective second electrode.

An electric power module comprises: a plurality of electric power units each of which extends along a longitudinal direction from a first end, including a first electrode, to a second end, including a second electrode; a first panel, including a first plurality of contact elements, each of which is in contact with the first electrode of a corresponding power unit; a second panel, including a second plurality of contact elements, each of which is in contact with the second electrode of a corresponding power unit. In the module, the first panel comprises a first plurality of holes, each of which is aligned, along the longitudinal direction, with a respective contact element of the first plurality of contact elements and with a respective first electrode, and the second panel comprises a second plurality of holes, each of which is aligned, along the longitudinal direction, with a respective contact element of the second plurality of contact elements and with a respective second electrode.

An electrode assembly, in which positive electrodes, separators, and negative electrodes are repeatedly stacked, and a positive electrode tab, through which the positive electrodes are connected to each other, and a negative electrode tab, through which the negative electrodes are connected to each other, are provided, includes a heat transfer layer made of a material having thermal conductivity greater than that of the separator and stacked between the positive electrode and the separator or between the negative electrode and the separator to disperse heat generated at a relatively high temperature point to a relatively low temperature point.