An apparatus and a method of detecting liquid leakage within a battery pack using a gyro sensor and a moisture detecting sensor. When liquid leakage of a coolant is detected, such as when a pipe of a coolant supplied for cooling (radiating heat) within a battery pack is damaged, the apparatus recognizes a liquid leakage generation position according to a slope of the battery pack by using a gyro sensor and determines whether the liquid leakage is generated based on a difference in a temperature between an upper side and a lower side of a corresponding region by using moisture detecting sensors, thereby improving accuracy of the detection of the liquid leakage according to the slope and the position of the battery pack. Particularly, the moisture detecting sensor is operated to be on only when the detection of the liquid leakage is required, thereby preventing unnecessary energy consumption.

A battery pack includes a housing, a cell assembly, a cell support member, a first sensor, and a second sensor. The cell assembly is disposed in the housing; and the cell support member is at least configured to support the cell assembly. The cell assembly includes a plurality of cells which are sheet-shaped, the plurality of cells are stacked, and a cell among the plurality of cells includes an encapsulation member configured to encapsulate the cell and a tab disposed at at least one end of the cell assembly and protruding from the cell. The first sensor is configured to detect a temperature of the cell and is disposed on a side of the tab facing towards the cell support member. The second sensor is configured to detect a parameter related to leakage of the cell and is disposed in the cell assembly.

A battery thermal runaway detection sensor system for use within a battery enclosure housing one or more batteries. The system has at least one gas sensor for detecting a venting condition of a battery cell of hydrogen, carbon monoxide or carbon dioxide, and providing a sensed output in real time. A microcontroller determines power management and signal conditioned output on the concentration of specific battery venting gases based on the sensed output from said at least one gas sensor.

An electronic device includes a housing configured to form at least a portion of an outer surface of the electronic device; a battery disposed inside the housing; a circuit board disposed inside the housing; a gas sensor module including at least one gas sensor and mounted in the circuit board; and at least one wall disposed adjacent to the gas sensor module, wherein in the at least one wall, a first opening configured to introduce a gas leaked from the battery and a second opening configured to introduce air outside the electronic device are formed.

A vehicle battery safety sensor system providing liquid detection inside a battery pack includes a battery pack having a structure defining a battery cell bay receiving a battery. A first sensor is mounted to the structure proximate to a low point area of the battery cell bay for sensing an operating condition within the low point area of the battery cell bay. A second sensor is mounted to the structure elevated above the first sensor for sensing an operating condition above the low point area of the battery cell bay. A safety module processes signals received from the first sensor and the second sensor and identifies if the operating condition within the low point area of the battery cell bay defines a fluid present in the low point area of the battery cell bay.

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; a housing configured to house the power supply and the controller; and a plurality of sensors capable of outputting the same physical quantity inside the housing. The controller is configured to diagnose a state of the power supply unit based on outputs of the plurality of sensors.

A traction battery of a motor vehicle includes a battery housing, and a plurality of battery modules which are arranged in the battery housing. Each battery module has a module housing and battery cells which are accommodated in the respective module housing. At least one particle sensor and/or at least one gas sensor are/is arranged in the battery housing.

Described methods and systems provide in-situ leakage current testing of battery cells in battery packs even while these packs operate. Specifically, an external electrical current is discontinued through a tested battery cell using a node controller, to which the tested battery cell is independently connected. Changes in the open circuit voltage (OCV) are then detected by the node controller for a set period time. Any voltage change, associated with taking the tested cell offline, is compensated by one or more other cells in the battery pack. The overall pack current and voltage remains substantially unchanged (based on the application demands), while the in-situ leakage current testing is initiated, performed, and/or completed. The OCV changes are then used to determine the leakage current of the tested cell and, in some examples, to determine the state of health of this cell and/or adjust the operating parameters of this cell.

A simultaneous inspection device of multiple secondary battery cell pouches is provided. The simultaneous inspection device includes a support member installed for support; a movable member installed to face the support member; multiple pressure panels which are installed side by side between the support member and the movable member, and combined so that the gap between them can be adjusted by the back and forth movement of the movable member wherein the secondary battery cell pouches are inserted into each gap; a guide member for guiding the pressing panels to move in the direction necessary for adjusting the gaps; and a pressure driving unit for moving the movable member back and forth to pressurize and pressure-release the secondary battery cell pouch between the pressurizing panels on both sides.

In order to more accurately measure internal pressure of a secondary battery, the present disclosure provides a measurement method including (a) interposing the secondary battery between an upper plate and a lower plate, (b) increasing internal pressure of the secondary battery by injecting a gas into the inside of the secondary battery, (c) monitoring surface pressure of the secondary battery at a measuring member which is in contact with the lower plate, and (d) measuring a value of the surface pressure from the measuring member at a point in time when at least one sealing portion of the secondary battery is vented.