A negative-electrode terminal that is secured to a sealing plate is connected to a first negative-electrode current collector. A negative-electrode tab that is connected to the negative-electrode sheet is connected to a second negative-electrode current collector. The first negative-electrode current collector and the second negative-electrode current collector are disposed along the sealing plate. The second negative-electrode current collector has an opening. The second negative-electrode current collector is disposed on the first negative-electrode current collector such that the opening faces the first negative-electrode current collector. The second negative-electrode current collector is welded to the first negative-electrode current collector around the opening.

A stack battery pack for an electric vertical take-off and landing aircraft includes a first pouch cell comprising a first top surface and a first bottom surface, a second pouch cell comprising a second top surface and a second bottom, wherein the first pouch cell and the second pouch cell are aligned such that the first bottom surface is in contact with the second top surface, an ejecta barrier located between the first pouch cell and the second pouch cell, wherein the ejecta barrier is configured to be substantially impermeable to a cell ejecta from the first pouch cell, and a vent configured to vent the cell ejecta, wherein the stack battery pack is configured to power a propulsor component.

A stack battery pack for an electric vertical take-off and landing aircraft includes a first pouch cell comprising a first top surface and a first bottom surface, a second pouch cell comprising a second top surface and a second bottom, wherein the first pouch cell and the second pouch cell are aligned such that the first bottom surface is in contact with the second top surface, an ejecta barrier located between the first pouch cell and the second pouch cell, wherein the ejecta barrier is configured to be substantially impermeable to a cell ejecta from the first pouch cell, and a vent configured to vent the cell ejecta, wherein the stack battery pack is configured to power a propulsor component.

A battery apparatus includes batteries arranged in a first direction; an end plate disposed at an end of the battery apparatus and having adjacent third and fourth surfaces; a protective support disposed on the end plate and having adjacent first and second surfaces. The first and third surfaces are disposed opposite to each other, and the second and fourth surfaces face the batteries; the fourth surface has an adhesive layer; the protective support has a notch at a junction of the first and second surfaces, and the notch is a first notch, and/or the end plate is provided with a notch at a junction of the third and fourth surfaces, and the notch is a second notch; a first (first notch and third surface), second (second notch and first surface), or third (first and second notches) combination forms a groove, and an opening of the groove faces the batteries.

The disclosure provides a battery, a battery module, a battery pack, and a battery manufacturing method. The battery includes a housing, a cell, and a pole column subassembly. The housing includes two first surfaces opposite to each other in a first direction. The cell is arranged in the housing. The cell includes a cell body and a tab portion. The tab portion includes two or more single-piece tabs extending from the lateral side of the cell body. When the single-piece tabs are flattened along the direction perpendicular to the lateral side of the cell body, the overlapping direction of the single-piece tabs is the first direction. The pole column subassembly is arranged on a first surface and connected with the tab portion. The orthographic projections of the tab portion and the pole column subassembly along the first direction are at least partially overlapped on a first surface.

A battery assembly and an assembling method of the assembled battery are provided. The assembled battery includes a first battery, a second battery, and a busbar. The first battery includes a first post assembly. The second battery includes a second post assembly. The busbar is bent into a first section, a second section, and a third section. The first section is connected to the first post assembly, and the third section is connected to the second post assembly. The busbar is an integrated U-shaped structure.

The disclosure provides a battery, a battery module, a battery pack, and a battery manufacturing method. The battery includes a housing, a cell, a pole assembly and a connecting piece. The housing includes two first surfaces opposite to each other in a first direction. The cell is arranged in the housing and includes a cell body and a tab portion. The tab portion includes two or more single-piece tabs extending from the lateral side of the cell body. The pole assembly is arranged on the first surface, and the tab portion and the pole assembly are connected through the connecting piece. The vertical distance between an end of the tab portion away from the lateral side of the cell body and the lateral side of the cell body is smaller than the vertical distance between the pole assembly and lateral side of the cell body.

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 miniature electrochemical cell having a total volume that is less than 0.5 cc is described. The cell casing is formed by joining two ceramic casing halves together. One or both casing halves are machined from ceramic to provide a recess that is sized and shaped to contain the electrode assembly. The opposite polarity terminals are electrically conductive feedthroughs or pathways, such as of gold, and are formed by brazing gold into tapered via holes machined into one or both ceramic casing halves. The two ceramic casing halves are separated from each other by a metal interlayer, such as of gold, bonded to a thin film metallization layer, such as of titanium, that contacts an edge periphery of each ceramic casing half. A solid electrolyte of LiPON (Li.sub.xPO.sub.yN.sub.z) is used to activate the electrode assembly.

Provided is a high-capacity SMD-type all-solid-state battery comprising: a stacked press body; a first external electrode formed on one side of the stacked press body; and a second external electrode formed on the other side of the stacked press body, wherein the stacked press body includes: a plurality of positive electrode sheets sequentially stacked and pressed so that an end of one side of each is connected to the first external electrode; a plurality of negative electrode sheets positioned between the positive electrode sheets crosswise with respect to the positive electrode sheets, and sequentially stacked and pressed so that an end of the other side of each is connected to the second external electrode; and a plurality of electrolyte sheets positioned between the positive electrode sheets and the negative electrode sheets and sequentially stacked and pressed.