The present disclosure relates to an apparatus and a method for analyzing a battery case, specifically, to the apparatus for analyzing the durability of various types of battery case, such as a pouch type or can type.

The apparatus comprises a first plate which is in close contact with an outer surface of a first sheet, the first sheet forming one side of the battery case; a gas injection tube which is inserted into the battery case while penetrating through the first plate and extends along an inner surface of the first sheet; and a pressure gauge which is connected to the gas injection tube.

A power supply unit of an aerosol generation apparatus includes: a power supply capable of discharging to a load for generating an aerosol from an aerosol source; a controller configured to control the power supply; and a housing configured to house the power supply and the controller. The controller is configured to detect at least one of leakage of a liquid inside the housing and entering of a liquid into the housing.

A battery module according to an embodiment of the present invention includes: a battery stack in which a plurality of battery cells including a cathode tab and an anode tab are stacked; a first bus bar assembly including a first bus bar connecting cathode tabs and anode tabs located at one end of the battery stack; and a second bus bar assembly including a second bus bar connecting cathode tabs and anode tabs located at the other end of the battery stack. The first bus bar assembly or the second bus bar assembly may include a venting part including at least one venting knife which protrudes from the first bus bar or the second bus bar toward the battery cell, such that stability of the battery module may be improved.

According to one embodiment, a battery backup unit (BBU) with a louver design includes a container, a battery module having one or more battery cells, a first louver at a frontend of the container, a second louver at a backend of the container, and a control mechanism that is coupled to both the first and second louvers and is configured to open and close the louvers. Also, the battery module and the control mechanism are disposed within the container. In another embodiment, a BBU shelf with a similar louver design that includes one or more battery modules may be implemented within an electronic rack.

A sensing device configured to monitor a battery pack is disclosed. The sensing device may include a plurality of carbon-based sensors enclosed within the battery pack. Each sensor coupled may be between a corresponding pair of electrodes, and may include a plurality of 3D graphene-based sensing materials. In some instances, the 3D graphene-based sensing materials of a first sensor may be functionalized with a first material configured to detect a presence of each analyte of a first group of analytes, and the 3D graphene-based sensing materials of a second sensor may be functionalized with a second material configured to detect a presence of each analyte of a second group of analytes.

A battery system, a method of detecting leaks inside a battery system, and a vehicle, the battery system including a housing including a housing frame and a base frame, the housing frame and the base frame enclosing a housing space; a battery module including a plurality of battery cells electrically connected to each other via a bus bar, the battery module being in the housing space; a tray including a tray frame and a tray base; and a battery management system including a liquid detector, wherein the liquid detector is configured to detect a liquid inside the tray, and the liquid detector includes a high-voltage conductor, a first end of the high-voltage conductor being connected to the bus bar and a second end of the high-voltage conductor being between the base frame and the tray base.

A power storage device includes: a power storage module in which an electrolytic solution is accommodated, the power storage module including a top face, a bottom face, and a plurality of side faces provided such that the side faces connect the top face to the bottom face; a liquid discharge valve provided on at least one of the side faces; a liquid collection unit configured to collect the electrolytic solution discharged from the liquid discharge valve; an accumulation portion in which the electrolytic solution collected by the liquid collection unit is accumulated; a corrosion portion configured to corrode due to the electrolytic solution; and a detection portion configured to detect breakage of the corrosion portion. The corrosion portion is placed in a passage route along which the electrolytic solution collected by the liquid collection unit reaches the accumulation portion.

A battery includes a first power generating element including a first electrode layer and a first counter electrode layer, a first current collector that is in contact with the first electrode layer, a second current collector that is in contact with the first counter electrode layer, a first sealing portion that seals a gap between the first current collector and the second current collector, a first void disposed between the first sealing portion and the first power generating element, and a first gas detection unit that detects gas. The first gas detection unit detects “the gas in the first void.”

An electric power system for an electric bus includes a battery assembly, a leakage detection device, and a control device. The battery assembly includes a plurality of series-connected battery packs and a plurality of switch elements, wherein each of the battery packs includes a positive terminal, a negative terminal, and a battery cell module, and the battery packs include a first battery pack and a second battery pack; the positive terminal of the first battery pack and the negative terminal of the second battery pack are electrically connected to a load of the electric bus, and at least one of the positive terminal of the first battery pack and the negative terminal of the second battery pack is electrically connected to the leakage detection device, which outputs a leakage signal when a leakage is detected on an electric wire connected between the battery assembly and the load.

A leakage detection device includes at least one optical coupler, a voltage divider, an analog-to-digital converter and a processing unit. Wherein, the at least one optical coupler is adapted to output an electrical signal according to a leakage degree of a DC power supply. The electrical signal is divided by the voltage divider to be output to the analog-to-digital converter and converted into a digital signal. The processing is adapted to compare a digital value corresponding to the digital signal with a reference value and output a leak signal when a difference between the digital value and the reference value is greater than a predetermined difference. A battery pack includes a battery cell assembly, a switch element, and a control unit, wherein the control unit controls the switch element to switch off an electrical connection between the battery cell assembly and the load to block electric power to the load.