An interconnect board (ICB) assembly suitable for a battery module of horizontal stack structure including unidirectional battery cells stacked with cell leads facing each other includes an ICB frame in which cell leads of unidirectional battery cells are configured to be received such that the unidirectional battery cells having the cell leads at one end are configured to be placed facing each other with the cell leads facing each other, and busbars formed in the ICB frame and configured to be electrically connected to the cell leads, wherein the ICB frame is configured to be connected to another ICB frame with a hinge structure in a lengthwise direction of the ICB frame. A battery module including the ICB assembly and a method for fabricating the battery module are also provided.

A battery cell assembly electrically connected to a circuit board and a battery package including multiple battery cell assemblies are disclosed. The battery cell assembly includes a battery cell forming electrodes with opposite polarities on the upper and the lower ends, one end fixed to the upper end electrode so that an electric current can flow, the first connector including the other end extended in a direction away from the center of the battery cell, is made of metal plate, and includes the second connector including the other end extended in a direction away from the center of the battery cell. The other end of the first connector and the other end of the second connector are extended in directions, so that the space between the two ends gets wider as they approach the bottom end, and directions that the two ends are not parallel with each other.

A battery cell assembly electrically connected to a circuit board and a battery package including multiple battery cell assemblies are disclosed. The battery cell assembly includes a battery cell forming electrodes with opposite polarities on the upper and the lower ends, one end fixed to the upper end electrode so that an electric current can flow, the first connector including the other end extended in a direction away from the center of the battery cell, is made of metal plate, and includes the second connector including the other end extended in a direction away from the center of the battery cell. The other end of the first connector and the other end of the second connector are extended in directions, so that the space between the two ends gets wider as they approach the bottom end, and directions that the two ends are not parallel with each other.

A busbar module includes: a plurality of busbars arranged along a first direction and connected to battery cells; and a plate-like circuit body having a plurality of detection lines to be connected to the busbars and having flexibility, in which the circuit body includes a main line portion in which the plurality of detection lines is routed and branch portions, branching from the main line portion and in which the detection lines to be connected to the busbars are routed, the branch portions each include a stretchable portion that is stretchable along the first direction, the stretchable portions each have slits or a cutout formed in a direction intersecting the first direction in a plan view of the circuit body, and a detection line of each of the stretchable portions is routed along the slits or the cutout.

A busbar module includes: a plurality of busbars arranged along a first direction and connected to battery cells; and a plate-like circuit body having a plurality of detection lines to be connected to the busbars and having flexibility, in which the circuit body includes a main line portion in which the plurality of detection lines is routed and branch portions, branching from the main line portion and in which the detection lines to be connected to the busbars are routed, the branch portions each include a stretchable portion that is stretchable along the first direction, the stretchable portions each have slits or a cutout formed in a direction intersecting the first direction in a plan view of the circuit body, and a detection line of each of the stretchable portions is routed along the slits or the cutout.

A battery pack includes a housing, and a battery cell or battery cell assembly and a circuit board that are disposed in the housing, and further includes: a first electrical connector connecting one of the positive and negative electrodes of the battery cell or battery cell assembly to the circuit board; a second electrical connector connecting the other one of the positive and negative electrodes of the battery cell or battery cell assembly to the circuit board; and a third electrical connector disposed on the circuit board and adapted to be electrically connected to an external electrical device to supply power from the battery cell to the electrical device through the third electrical connector. The third electrical connector includes a socket terminal in press fit with a pin terminal of the external electrical device. The technical solution involves supplying power from the battery cell to the electrical device.

A battery pack includes a housing, and a battery cell or battery cell assembly and a circuit board that are disposed in the housing, and further includes: a first electrical connector connecting one of the positive and negative electrodes of the battery cell or battery cell assembly to the circuit board; a second electrical connector connecting the other one of the positive and negative electrodes of the battery cell or battery cell assembly to the circuit board; and a third electrical connector disposed on the circuit board and adapted to be electrically connected to an external electrical device to supply power from the battery cell to the electrical device through the third electrical connector. The third electrical connector includes a socket terminal in press fit with a pin terminal of the external electrical device. The technical solution involves supplying power from the battery cell to the electrical device.

A battery cell contacting device for a battery module having a plurality of battery cells electrically coupled to one another via a plurality of cell connectors has a rigid printed circuit board, which, in the region next to the plurality of cell connectors, is arranged over the battery cells and is connected to the plurality of cell connectors via a plurality of contact elements. For the purpose of making fitting easier and more reliable, each of the plurality of contact elements is formed from an electrically conductive wire. The wire, at the first end section of the contact element, is electrically conductively connected to the printed circuit board and, at the opposite, second end section of the contact element, can be electrically conductively connected to the respective cell connector and/or is coupled to a sensor element which can be brought into contact with the respective cell connector.

A battery module includes: an all-solid-state battery having a voltage exceeding 0 V; a semiconductor element; a PTC element; and a circuit board, wherein the all-solid-state battery, the semiconductor element, and the PTC element are solder-bonded to the circuit board, the all-solid-state battery has a positive electrode terminal and a negative electrode terminal, the semiconductor element is electrically connected between the positive electrode terminal and the negative electrode terminal, and the PTC element is connected in series between the positive electrode terminal or the negative electrode terminal and the semiconductor element.

A battery module includes: an all-solid-state battery having a voltage exceeding 0 V; a semiconductor element; a PTC element; and a circuit board, wherein the all-solid-state battery, the semiconductor element, and the PTC element are solder-bonded to the circuit board, the all-solid-state battery has a positive electrode terminal and a negative electrode terminal, the semiconductor element is electrically connected between the positive electrode terminal and the negative electrode terminal, and the PTC element is connected in series between the positive electrode terminal or the negative electrode terminal and the semiconductor element.

A battery system, in particular for an aircraft, having a housing, which is sealed gas-tight, and a cell block, which is formed from a plurality of battery cells connected electrically and mechanically by contact plates. The housing can be connected to a vacuum pump in order to generate vacuum within the housing and a vacuum prevails within the housing, wherein at least one housing side wall of the housing is flexible enough that the housing side wall is tensioned together with the cell block by the vacuum acting within the housing. A vehicle, in particular an aircraft, may be electrified, at least in part, by such a battery system.