A battery module, a device, and a failure handling method for a failed battery cell. The battery module includes: a battery cell arrangement structure, including a plurality of battery cells arranged along a length direction, where the battery cells include electrode terminals, and the battery cells include a failed battery cell; a box body, having an accommodation cavity in which the battery cell arrangement structure is located; a mounting beam, located in the accommodation cavity and at an end of the battery cell arrangement structure along the width direction; a pressing plate; and a conductive component, connected to a positive electrode terminal and a negative electrode terminal of the failed battery cell. The conductive component is easily connected to electrode terminals of a failed battery cell, so that a maintenance process can be simplified and maintenance costs can be reduced.

A secondary battery includes an electrode body that includes a positive-electrode sheet and a negative-electrode sheet, an exterior body that accommodates the electrode body, a sealing plate that seals an opening of the exterior body, a positive-electrode terminal that is secured to the sealing plate, a positive-electrode tab that is connected to the positive-electrode sheet, a first positive-electrode current collector that is connected to the positive-electrode terminal and electrically connected to the positive-electrode tab, an inner insulating member that is disposed between the sealing plate and the first positive-electrode current collector, and a cover that is composed of a resin and disposed between the first positive-electrode current collector and the electrode body. The cover includes a cover portion that faces the first positive-electrode current collector and a cover joint that extends from the cover portion toward the sealing plate. The cover joint is connected to the inner insulating member.

A rechargeable battery includes at least two electrode assemblies including electrodes on opposite surfaces of a separator, a case accommodating the electrode assemblies, a cap plate coupled to an opening of the case, first and second electrode terminals in the cap plate, and first and second lead tabs connected to respective first and second electrode terminals and to respective uncoated regions of the two electrode assemblies, wherein a first uncoated region of each of the two electrode assemblies is at a center of the case and is connected to the first lead tab, and wherein a second uncoated region of each of the two electrode assemblies is at an edge of the case and is connected to the second lead tab.

Disclosed herein is a prismatic battery cell including an electrode assembly including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, the electrode assembly having a positive electrode terminal and a negative electrode terminal protruding from at least one side of the positive electrode and the negative electrode, two or more case members coupled to each other so as to have a shape corresponding to the external shape of the electrode assembly such that the case members surround the electrode assembly, the case members having a predetermined opening, through which one surface of the electrode assembly, at least, corresponding to protruding portions of the positive electrode terminal and the negative electrode terminal is exposed, and a cap plate coupled to the opening of the case members in a sealed state.

With a battery using a flexible outer package, electric current is reliably interrupted when the temperature is increased due to the occurrence of abnormality, thereby preventing excessive heat generation. A battery 1 includes a battery element 10, a pair of first terminals 11 that are electrically connected to the battery element 10, a flexible outer package 13, and a second terminal 12. The outer package 13 is partitioned into a first chamber 13a in which the battery element 10 is sealed and a second chamber 13b which is adjacent to the first chamber 13a. The second terminal 12 is led out from the second chamber 13b to the outside of the outer package 13 so that one first terminal 11 is made electrically connectable to an external wiring through the second chamber 13b. A gas generation material 14 which generates a gas at a predetermined temperature or higher is sealed in the second chamber 13b.

The present invention relates to a detachable voltage sensing module and a battery device having same. The voltage sensing module comprises: a body on which are fixed a plurality of bus bars, which are connected to the cell tabs of battery cells; a substrate on which a control circuit is formed and which is detachably attached to the body; a jack terminal, disposed on the substrate, for connecting the battery cells to the substrate, when the substrate is being attached to the body, by connecting to one end of each of the bus bars; and a fixing means for fixing the substrate to the body. A detachable voltage sensing module formed as described above and a battery device having same, according to the present invention, are formed such that bus bars can be assembled on or disassembled from a substrate, and thus the substrate can be replaced at any time, thereby enabling easy assembly, maintenance and repair.

A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing comprises an open-ended ceramic container having first and second via holes providing respective first and second electrically conductive pathways extending through the container. A metal lid secured to the open-end of the container by a gold seal provides the cell casing. An electrode assembly housed inside the casing comprises a cathode active material deposited on an inner surface of the ceramic container in contact with a current collector in electrical continuity with one of the conductive pathways. A solid electrolyte, preferably of LiPON (Li.sub.xPO.sub.yN.sub.z), is deposited on the cathode active material followed by an anode active material in contact with the other conductive pathway. The first and second conductive pathways can comprise platinum or gold. That way, the first and second conductive pathways serve as negative and positive terminals for the cell. The negative and positive terminals are configured for electrical connection to a load.

The present application provides a top cover assembly, a secondary battery and a power consumption apparatus. The top cover assembly includes a top cover plate, a pole, and a sealing ring. The top cover plate is provided with a mounting hole, and the mounting hole includes a sealing hole section. The pole is inserted into the mounting hole, the pole includes a sealing shaft section, the sealing shaft section is inserted into the sealing hole section, and a side wall of the sealing hole section and a side wall of the sealing shaft section are both tilted with respect to an axis of the mounting hole. And the sealing ring is disposed between the side wall of the sealing hole section and the side wall of the sealing shaft section.

A terminal component includes a first metal and a second metal overlapped on the first metal. At a boundary between the first metal and the second metal, there is a joint portion in which the first metal and the second metal are joined by metal joining. The second metal has a groove on the outside of the joint portion on the surface opposite to the surface overlapped on the first metal.

A terminal component includes a first metal and a second metal overlapped on the first metal. At least three biting portions in which an edge of one of the first metal and the second metal bites into the other metal is provided at an interface where the first metal and the second metal are overlapped.