In a battery module, end plates disposed at both ends of battery stack are connected by binding bars. Electrode terminals of respective battery cells and voltage detection circuit of electronic circuit block are connected by a plurality of voltage detection lines. Electronic circuit block is disposed on an outer surface of end plate and fixes one connector formed by linearly disposing a plurality of connecting terminals to which voltage detection lines are connected to circuit board on which voltage detection circuit is mounted. Voltage detection circuit is provided with a plurality of input terminals arranged in a linear manner. In circuit board, connecting terminal and input terminal disposed at opposite positions are connected by a plurality of connection lines. A cell voltage of each battery cell is input from connection line to adjacent input terminals.

A battery cell monitoring and conditioning circuit is disclosed to facilitate low cost manufacture of battery modules comprising a plurality of series connected cells. A battery management system utilizing a plurality of series connected cell monitoring and conditioning circuits is disclosed. Methods are provided for operating the disclosed circuits.

A battery system includes a plurality of battery cell packs arranged in layers selectively connected in series and parallel by a control system controlling a plurality of switches. Each of the battery cell packs includes a plurality of battery cells. A plurality of first switches and a plurality of second switches are controlled by a control system to connect the battery cell packs in response to a desired current output of the battery system and/or a desired voltage output of the battery system irrespective of individual battery cell or battery cell pack voltages or currents associated with state of charge or operational performance. The control system controls the switches to selectively connect the battery cell pack(s) to the output connections in parallel and/or series to provide redundancy and reduce output voltage/current fluctuation otherwise associated with state of charge or underperforming battery cells/packs.

A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

An integral hybrid electric aircraft system including a fuselage including an electrical energy source, wherein the electrical energy source includes a plurality of batteries and a fuel tank, and wherein the fuel tank contains fuel. The fuselage also including a generator in fluid communication with the fuel tank. The generator generates electricity using the fuel from the fuel tank. The system including a set of propulsors, wherein each propulsor of the set of propulsors is electrically connected to the electrical energy source and the generator and wherein the set of propulsors is configured to be powered by the generator during fixed-wing flight. The set of propulsors including at least a pusher propulsor configured to provide forward thrust and at least a lift propulsor configured to provide lift.

An integral hybrid electric aircraft system including a fuselage including an electrical energy source, wherein the electrical energy source includes a plurality of batteries and a fuel tank, and wherein the fuel tank contains fuel. The fuselage also including a generator in fluid communication with the fuel tank. The generator generates electricity using the fuel from the fuel tank. The system including a set of propulsors, wherein each propulsor of the set of propulsors is electrically connected to the electrical energy source and the generator and wherein the set of propulsors is configured to be powered by the generator during fixed-wing flight. The set of propulsors including at least a pusher propulsor configured to provide forward thrust and at least a lift propulsor configured to provide lift.

A cell contacting system for an electrochemical device is provided, which includes a plurality of cell groups having one or more electrochemical cells, each having a first and a second cell terminal. The first cell terminals follow each other along the longitudinal direction in a first cell terminal region of the electrochemical device and the second cell terminals follow each other along the longitudinal direction in a second cell terminal region of the electrochemical device. The cell contacting system includes at least one cell connector extending obliquely to the longitudinal direction and configured for electrically conductively connecting cell terminals of a first cell group in the first cell terminal region to cell terminals of a second cell group in the second cell terminal region, which cell contacting system reliably enables a relative movement between the cell terminals to be electrically connected to each other.

A cell contacting system for an electrochemical device is provided, which includes a plurality of cell groups having one or more electrochemical cells, each having a first and a second cell terminal. The first cell terminals follow each other along the longitudinal direction in a first cell terminal region of the electrochemical device and the second cell terminals follow each other along the longitudinal direction in a second cell terminal region of the electrochemical device. The cell contacting system includes at least one cell connector extending obliquely to the longitudinal direction and configured for electrically conductively connecting cell terminals of a first cell group in the first cell terminal region to cell terminals of a second cell group in the second cell terminal region, which cell contacting system reliably enables a relative movement between the cell terminals to be electrically connected to each other.

A battery and straps for a battery are disclosed. The battery according to various embodiments comprises a number of straps which connect a number of battery cells in series. The battery straps may pass through cutouts provided in a cell divider wall. The cutouts and straps may define a common headspace. The battery may have five connecting straps and two end straps.