A battery module including: a battery cell stack including a plurality of battery cells; a housing for accommodating the battery cell stack; a pair of busbar frames at a front end and a back end of the battery cell stack; a connecting portion that connects the pair of busbar frames, and is formed of a flexible flat cable (FFC); a connector formed on each of the busbar frames and coupled to the connecting portion; and a film portion formed between the connector and an upper portion of the housing.

A battery module including: a battery cell stack including a plurality of battery cells; a housing for accommodating the battery cell stack; a pair of busbar frames at a front end and a back end of the battery cell stack; a connecting portion that connects the pair of busbar frames, and is formed of a flexible flat cable (FFC); a connector formed on each of the busbar frames and coupled to the connecting portion; and a film portion formed between the connector and an upper portion of the housing.

The present disclosure relates to a bipolar battery comprising one or more troughs formed therein and cooperating with one or more channels, the troughs adapted to guide flow of electrolyte to provide for faster and more uniform flow of the electrolyte. The disclosure relates to a bipolar battery assembly comprising: a) a plurality of electrode plates stacked together to form an electrode plate stack; b) one or more electrochemical cells, wherein each electrochemical cell is formed between a pair of electrode plates; c) one or more separators disposed within the one or more electrochemical cells; and d) one or more troughs formed in each of the one or more electrochemical cells and adapted to guide flow of electrolyte into the one or more electrochemical cells. The present disclosure further relates to a method for preparing a battery assembly. The method may utilize circulating one or more fluids through the battery assembly during preparation. Circulating fluids may be part of thermal control cycling.

One variation of a battery unit includes: a substrate including silicon and defining a cell, wherein the cell includes a base encompassed by a continuous wall and a set of posts extending normal to the base; an electrolyte material coating vertical surfaces of each post, in the set of posts, and vertical surfaces of the continuous wall in the cell; a cathode material filling the cell over the electrolyte material, between posts in the set of posts, and between the set of posts and the continuous wall; a seal extending along a top of the continuous wall; and a cathode current collector bonded to the seal, electrically coupled to the cathode material, and cooperating with the substrate to enclose the cell to form a single-cell battery.

One variation of a battery unit includes: a substrate including silicon and defining a cell, wherein the cell includes a base encompassed by a continuous wall and a set of posts extending normal to the base; an electrolyte material coating vertical surfaces of each post, in the set of posts, and vertical surfaces of the continuous wall in the cell; a cathode material filling the cell over the electrolyte material, between posts in the set of posts, and between the set of posts and the continuous wall; a seal extending along a top of the continuous wall; and a cathode current collector bonded to the seal, electrically coupled to the cathode material, and cooperating with the substrate to enclose the cell to form a single-cell battery.

A battery pack may include a drainage device provided at a bottom portion of the housing case. The drainage device may include a drain hole communicating between the inside and the outside of the housing case, so that water introduced into the housing case is discharged to the outside of the housing case. The drainage device may be disposed between two of the terminal members that are connected to electrodes of the battery cells.

A drain system is described for allowing fluid to drain from a battery pack while maintaining structural integrity of the battery pack. A frame of the battery pack is comprised of several retaining members in which valves are disposed to allow fluid to exit the battery pack. The valves are positioned such that forces normally experienced while driving a vehicle, such as acceleration, deceleration, and turning forces, cause the fluid to flow toward and through the valves.

A drain system is described for allowing fluid to drain from a battery pack while maintaining structural integrity of the battery pack. A frame of the battery pack is comprised of several retaining members in which valves are disposed to allow fluid to exit the battery pack. The valves are positioned such that forces normally experienced while driving a vehicle, such as acceleration, deceleration, and turning forces, cause the fluid to flow toward and through the valves.

An electric generating appliance that supplies a fixed voltage through a voltage regulator connected to one or more primary batteries comprised of cells made of solid metal anodes and solid metal cathodes where the metal for the solid metal anodes is a different type of metal than the metal used for the solid metal cathodes and where each cell has an output duct to expel air or aqueous electrolyte and an input duct to receive air, aqueous electrolyte, or a humidified electrolyte from a circuit-controlled pump connected to a refillable electrolyte container.

An electric generating appliance that supplies a fixed voltage through a voltage regulator connected to one or more primary batteries comprised of cells made of solid metal anodes and solid metal cathodes where the metal for the solid metal anodes is a different type of metal than the metal used for the solid metal cathodes and where each cell has an output duct to expel air or aqueous electrolyte and an input duct to receive air, aqueous electrolyte, or a humidified electrolyte from a circuit-controlled pump connected to a refillable electrolyte container.