Disclosed are a tab, a battery core having the same, a battery module, and a battery pack. The tab includes a first tab sheet and a second tab sheet. The second tab sheet is arranged on a side of the first tab sheet in a thickness direction. At least one cooling cavity is defined between the second tab sheet and the first tab sheet. The cooling cavity is filled with a cooling medium.

Disclosed are a tab, a battery core having the same, a battery module, and a battery pack. The tab includes a first tab sheet and a second tab sheet. The second tab sheet is arranged on a side of the first tab sheet in a thickness direction. At least one cooling cavity is defined between the second tab sheet and the first tab sheet. The cooling cavity is filled with a cooling medium.

Disclosed is a battery module, which includes a plurality of battery cells stacked on each other, a module case configured to accommodate the plurality of battery cells, a thermal resin filled in the module case to cover electrode leads of the plurality of battery cells at least partially, a laser sensor provided to the module case to measure a filling length of the thermal resin, and a control unit configured to control filling of the thermal resin based on the filling length information measured by the laser sensor.

Disclosed is a battery module, which includes a plurality of battery cells stacked on each other, a module case configured to accommodate the plurality of battery cells, a thermal resin filled in the module case to cover electrode leads of the plurality of battery cells at least partially, a laser sensor provided to the module case to measure a filling length of the thermal resin, and a control unit configured to control filling of the thermal resin based on the filling length information measured by the laser sensor.

A battery device has at least one battery module including a battery module housing, in which battery module housing battery cells are provided. The battery cells each have a cell envelope with a cell vent. The battery module housing has a battery-module housing wall with battery-module housing vents. The battery-module housing vents are respectively assigned a first closure arrangement, which first closure arrangement closes the assigned battery-module housing vent in a first state (Z1) and opens it in a second state (Z2), in order to allow at least partial venting of gas from the battery module housing through the assigned battery-module housing vent in the second state (Z2) of the first closure arrangement. At least two of the cell vents respectively lie opposite an assigned battery-module housing vent, at least in certain regions.

A battery, particularly for a motor vehicle, including at least two battery cells, wherein at least one circuit branch is connected to a respective positive pole and negative pole of the respective battery cell, which includes a heating unit, which can be connected in parallel to the respective battery cell by a switching element of the circuit branch; and a control device, which is configured to switch the switching elements of the respective circuit branch between an electrically conductive and an electrically blocking state in order to heat the battery cells, perform active balancing of the battery cells, and/or discharge the battery cells. The invention furthermore relates to a method for operating a battery.

A battery, particularly for a motor vehicle, including at least two battery cells, wherein at least one circuit branch is connected to a respective positive pole and negative pole of the respective battery cell, which includes a heating unit, which can be connected in parallel to the respective battery cell by a switching element of the circuit branch; and a control device, which is configured to switch the switching elements of the respective circuit branch between an electrically conductive and an electrically blocking state in order to heat the battery cells, perform active balancing of the battery cells, and/or discharge the battery cells. The invention furthermore relates to a method for operating a battery.

A secondary battery includes a jelly roll electrode assembly in which a cathode sheet, an anode sheet, and a separator interposed between the cathode sheet and the anode sheet are wound together. The secondary battery also includes a battery case to which the jelly roll electrode assembly is mounted. The battery case is configured such that a flow path recessed toward the center of the jelly roll electrode assembly is formed in the lower part of the battery case. The flow path includes a first flow path and a second flow path located in the center of the first flow path, and wherein an upper part of the second flow path is opened toward the upper part of the first flow path.

The aspects of the present disclosure relate to a battery lid configured to be mounted on a housing of a battery cell to cover an opening therein. The battery lid is formed by a body enclosing a flow channel having at least one flow inlet and at least one flow outlet, the flow inlet and flow outlet being arranged in flow communication with the flow channel. The disclosed embodiments relate also to a battery cell assembly.

An electric stored energy source for a motor vehicle has a housing that defines an inner chamber in which electrochemical components of an energy storage cell are accommodated, and a line extending through the inner chamber and via which a coolant or a heating medium can be guided through the inner chamber.