The present invention relates to a battery module, and the battery module includes at least one battery cell, a protection circuit module that includes a rigid printed circuit board, and is electrically connected with the battery cell, at least one temperature sensing element provided at a surface of the battery cell, and a flexible printed circuit board that electrically connects the protection circuit module and the temperature sensing element.

The present application relates to the field of battery, discloses an electrode-assembly and a battery, wherein the electrode-assembly includes a body with a first wall and a current blocker arranged on the first wall. The first wall of the body is close to the internal structure of the body, and its temperature is relatively close to the internal temperature of the body as compared with the seal side of the electrode-assembly; in above electrode-assembly, since the current blocker is directly attached to the first wall of the body, the heat inside the body can be quickly conducted to the current blocker through the first wall, so the current blocker of the electrode-assembly can be triggered more timely to reduce or cut off the current for effectively protecting the electrode-assembly.

An externally-attached PTC element attachable to one electrode terminal of a tubular battery with electrode terminals on both end surfaces, the externally-attached PTC element including: a bottom plate made of a metal plate; a plate-shaped PTC element; and a top panel made of a metal plate, the plate-shaped PTC element and the top panel being stacked in that order above the bottom plate disposed below, the PTC element being disposed in an opposed area between the top panel and the bottom plate, the top panel projecting and extending in one direction with respect to a planar area of the bottom plate, the top panel having a distal end formed into a lead terminal shape mountable to a circuit board.

Discussed is a battery system including: a battery pack including a plurality of battery cells; a battery monitoring integrated circuit (BMIC) configured to monitor each of a plurality of cell voltages of the plurality of battery cells; a plurality of balancing batteries each charged by a target battery cell requiring a cell balancing among the plurality of battery cells; a power conversion unit including a direct-current to direct-current (DC-DC) converter receiving voltages from the plurality of balancing batteries and configured to convert the voltages into output voltages; and a power supply unit configured to supply the output voltages to the BMIC when the output voltages have a voltage equal to or greater than a predetermined level for driving the BMIC.

A battery includes a first positive electrode collector, a first negative electrode collector, a first power generating element, a second power generating element, and a first insulating part. The first and second power generating elements each include a positive electrode active material-containing layer, a negative electrode active material-containing layer, and an inorganic solid electrolyte-containing layer. In each of the first and second power generating elements, the inorganic solid electrolyte layer is in contact with the positive electrode active material-containing layer and the negative electrode active material-containing layer. The positive electrode active material layers of the first and second power generating elements are in contact with the first positive electrode collector. The negative electrode active material layers of the first and second power generating elements are in indirect contact with the first negative electrode collector. The first insulating part is disposed between the first and second power generating elements.

Energy storage devices, battery cells, and batteries of the present technology may include a first cell and a second cell disposed adjacent the first cell. The devices may include a stacked current collector coupled between the first cell and the second cell. The current collector may include a grid or matrix, and may include a combination of conductive and insulative materials.

A battery balancing system for parallel connected batteries for balancing batteries that are at dissimilar voltages. The system has first and second buses, connected by a current limiter. A high bus takes energy from the highest voltage battery or batteries in the system and transfers the energy through the current limiter to the low bus, which in turn delivers energy to the lowest voltage battery or batteries in the system.

A an electrode having an improved safety,including: a current collector including a main body and an electrode tab formed at one side of the main body; a conductive coating layer which is formed on at least one surface of the current collector and includes a conducting polymer of which resistance increases when a temperature rises; and an electrode mixture layer which is formed on the conductive coating layer. Herein, the conductive coating layer is formed on a region including both the main body and the electrode tab.

An electrode assembly with improved connection between current collectors and electrode tabs, and a method for manufacturing the same, for assuring safety with respect to overcharge, and battery capacity by improving a connection structure between the electrode tab and the current collector are provided. The electrode assembly for a rechargeable battery includes: an electrode current collector; an uncoated region in which an electrode active material layer is not formed, and provided on one side of the electrode current collector; an electrode tab disposed in the uncoated region; and a conductive adhesion portion that is disposed between the uncoated region and the electrode tab. The conductive adhesion portion comprises a positive temperature coefficient (PTC) material.

A battery pack that provides a visual indication in response to an input. The battery pack includes a housing, a battery cell contained within the housing, a first printed circuit board (PCB) within the housing, an output interface provided on the first PCB, an indicator provided on the first PCB, a second PCB within the housing, a switch provided on the second PCB, a temperature sensor provided on the second PCB, and a controller positioned on the first PCB. The controller is operable to receive an input signal from at least one of the output interface and the switch, determine a condition based on the input signal, and provide, in response to determining the condition, a visual indication via the indicator.