Abstract: A battery system includes a battery pack including battery cells and a cooling system including a coolant transfer member for circulating a liquid coolant in a cooling circuit, a first heat exchanger integrated into the cooling circuit and thermally contacting the battery cells, and a pressure sensor for detecting a change in pressure inside the cooling circuit. A battery management system is connected to the pressure sensor and the coolant transfer member and is for performing a detection mode including: detecting an initial pressure with the pressure sensor and switching off the coolant transfer member for a time period; after switching off the coolant transfer member, capturing the pressure with the pressure sensor; and determining a pressure difference between the initial pressure value and the captured pressure, when the pressure difference exceeds a threshold, determining an abnormal condition that could cause a thermal runaway of the battery pack.

Abstract: A cutting device for cutting an electrode foil for a secondary battery cell is provided. The cutting device includes: a cutter configured for cutting an electrode foil; a vacuum configured to intake gas; and an electrostatic field generator. The electrostatic field generator includes a voltage source, a first electrode configured for electrically connecting an electrode foil and a second electrode arranged at a distance from the electrode foil at an inlet opening of the vacuum when the electrode foil is in position to be cut by the cutter.

Abstract: A battery system includes a battery module, a housing, a gas conveyor, and a gas sensor. The battery module is interconnected between a first system terminal and a second system terminal by a plurality of high current connectors, and the housing includes: a plurality of exterior walls enclosing the battery module and the plurality of high current connectors; and a partition wall within the housing. The gas conveyor is configured to circulate a gas flow through a flow channel loop formed within the housing by the partition wall and the exterior walls, and the gas sensor is arranged in the flow channel loop and is configured to detect an excess concentration of a gas species in the gas flow.

Abstract: A current collecting system for a battery module, a battery module including the same, and a vehicle are disclosed. According to an exemplary embodiment of the present invention, the current collecting system includes a first current collecting plate and a second current collecting plate stacked to be insulated from each other, wherein the first current collecting plate is connected to the battery cells of the first group through a plurality of first connectors, respectively, and the second current collecting plate is connected to the battery cells of the second group through a plurality of second connectors, respectively, and wherein a minimum distance between two first connectors in the first current collecting plate and a minimum distance between two second connectors in the second current collecting plate are greater than a distance between any pair of neighboring connectors.

Abstract: Embodiments of the present invention are directed to a method and system for preventing ingestion of ambient air contaminated with possibly harmful, toxic, or flammable battery gases into a passenger compartment of a vehicle in the event of a battery failure. If an abnormal state is detected in a battery pack of the vehicle, the vehicle automatically switches the HVAC system to air recirculation mode, thereby preventing any toxic gas emitted from the battery pack from entering the passenger compartment.

Abstract: The present invention relates to a battery system including at least one aligned battery cell arranged along a first direction. Each of aligned battery cells includes a battery case in which an electrode assembly is accommodated, a cap assembly disposed in the battery case, and a vent hole provided in the cap assembly. The battery system further includes a battery system cover for covering the aligned battery cells. The battery system cover includes at least one ridge portion disposed on a lower surface thereof to face the aligned battery cells. The ridge portion extends along the first direction to be aligned with the vent holes formed in the aligned battery cells, and the ridge portion deflects the gas ejected from the vent holes along a second direction that is substantially perpendicular to the first direction. The gas ejected from the battery cells is distributed away from the adjacent cells disposed along the first direction so that the battery system may reduce the risk of thermal runaway propagation.

Abstract: Embodiments of the present invention are directed to a method and system for preventing ingestion of ambient air contaminated with possibly harmful, toxic, or flammable battery gases into a passenger compartment of a vehicle in the event of a battery failure. If an abnormal state is detected in a battery pack of the vehicle, the vehicle automatically switches the HVAC system to air recirculation mode, thereby preventing any toxic gas emitted from the battery pack from entering the passenger compartment.

Abstract: A cooling system for cooling electrochemical cells of a battery system is provided. The cooling system includes a housing configured to accommodate a plurality of stacked electrochemical cells. The housing includes a structured side wall having a protrusion therein, and the protrusion is adapted to receive a section of a thermally conductive element arranged between two adjacent ones of the stacked electrochemical cells.

Abstract: The present invention relates to a battery system including at least one aligned battery cell arranged along a first direction. Each of aligned battery cells includes a battery case in which an electrode assembly is accommodated, a cap assembly disposed in the battery case, and a vent hole provided in the cap assembly. The battery system further includes a battery system cover for covering the aligned battery cells. The battery system cover includes at least one ridge portion disposed on a lower surface thereof to face the aligned battery cells. The ridge portion extends along the first direction to be aligned with the vent holes formed in the aligned battery cells, and the ridge portion deflects the gas ejected from the vent holes along a second direction that is substantially perpendicular to the first direction. The gas ejected from the battery cells is distributed away from the adjacent cells disposed along the first direction so that the battery system may reduce the risk of thermal runaway propagation.

Abstract: A battery system includes a battery module, a housing, a gas conveyor, and a gas sensor. The battery module is interconnected between a first system terminal and a second system terminal by a plurality of high current connectors, and the housing includes: a plurality of exterior walls enclosing the battery module and the plurality of high current connectors; and a partition wall within the housing. The gas conveyor is configured to circulate a gas flow through a flow channel loop formed within the housing by the partition wall and the exterior walls, and the gas sensor is arranged in the flow channel loop and is configured to detect an excess concentration of a gas species in the gas flow.

Abstract: A current collecting system for a battery module, a battery module including the same, and a vehicle are disclosed. According to an exemplary embodiment of the present invention, the current collecting system includes a first current collecting plate and a second current collecting plate stacked to be insulated from each other, wherein the first current collecting plate is connected to the battery cells of the first group through a plurality of first connectors, respectively, and the second current collecting plate is connected to the battery cells of the second group through a plurality of second connectors, respectively, and wherein a minimum distance between two first connectors in the first current collecting plate and a minimum distance between two second connectors in the second current collecting plate are greater than a distance between any pair of neighboring connectors.

Abstract: A wall structure according to an exemplary embodiment of the present invention as a wall structure of one case among a battery cell, a battery sub-module, a battery module, and a battery system includes a multi-layered structure having a first layer toward an inside of the case, the case, a third layer toward an outside of the case, and a second layer between the first layer and the third layer, wherein the first layer is configured to electrically isolate the second layer from the inside of the case, the second layer includes an ablative material and is configured to act as a heat shield for the third layer, and the third layer has higher thermal conductivity than the second layer.

Abstract: The present invention refers to a busbar for electrically connecting a plurality of cells of a battery module. In order to electrically disconnect the battery cells from each other upon thermal runaway of at least one of the cells or short circuit, the busbar includes a core and a shell at least partially made of a first material, said first material being an electrically conducting material, wherein the core is at least partially made of a second material having a coefficient of thermal expansion which is significantly higher than the coefficient of thermal expansion of the first material.

Abstract: A battery module includes: a plurality of aligned battery cells; a cooling gas inlet for supplying cooling gas to the battery cells; and a cooling gas valve in the cooling gas inlet. Each of the battery cells includes a battery case configured to bulge in response to a second pressure in the battery case, an electrode assembly in the battery case, a cap assembly on the battery case, and a gas exhaust vent configured to rupture in response to a first pressure in the battery case that is higher than the second pressure. The cooling gas inlet is defined by first and second side walls. The first side wall is configured to deform in response to a bulged battery case, and the cooling gas valve is configured to change from an open position into a closed position due to the deformation of the first side wall.

Abstract: A battery module includes: a plurality of aligned battery cells; a cooling gas inlet for supplying cooling gas to the battery cells; and a cooling gas valve in the cooling gas inlet. Each of the battery cells includes a battery case configured to bulge in response to a second pressure in the battery case, an electrode assembly in the battery case, a cap assembly on the battery case, and a gas exhaust vent configured to rupture in response to a first pressure in the battery case that is higher than the second pressure. The cooling gas inlet is defined by first and second side walls. The first side wall is configured to deform in response to a bulged battery case, and the cooling gas valve is configured to change from an open position into a closed position due to the deformation of the first side wall.

Abstract: A cooling system for cooling electrochemical cells of a battery system is provided. The cooling system includes a housing configured to accommodate a plurality of stacked electrochemical cells. The housing includes a structured side wall having a protrusion therein, and the protrusion is adapted to receive a section of a thermally conductive element arranged between two adjacent ones of the stacked electrochemical cells.

Abstract: The present invention refers to a busbar for electrically connecting a plurality of cells of a battery module. In order to electrically disconnect the battery cells from each other upon thermal runaway of at least one of the cells or short circuit, the busbar includes a core and a shell at least partially made of a first material, said first material being an electrically conducting material, wherein the core is at least partially made of a second material having a coefficient of thermal expansion which is significantly higher than the coefficient of thermal expansion of the first material.

Abstract: A monitoring system for monitoring the state of an energy storage cell for storing electrical energy, in particular, an electrochemical energy storage cell or an energy storage cell having at least one capacitor. Integrated electronics for monitoring the state of the energy storage cell are arranged in the energy storage cell, the integrated electronics having a transmitting/receiving unit for wireless data exchange with a battery control system arranged outside the energy storage cell. Alternatively, the integrated electronics are connected to a transmitting/receiving unit for wireless data exchange with a battery control system arranged outside the energy storage cell.

Abstract: A monitoring system for monitoring the state of an energy storage cell for storing electrical energy, in particular, an electrochemical energy storage cell or an energy storage cell having at least one capacitor. Integrated electronics for monitoring the state of the energy storage cell are arranged in the energy storage cell, the integrated electronics having a transmitting/receiving unit for wireless data exchange with a battery control system arranged outside the energy storage cell. Alternatively, the integrated electronics are connected to a transmitting/receiving unit for wireless data exchange with a battery control system arranged outside the energy storage cell.