Abstract: A battery pack includes a secondary battery, an external case, an internal case housed inside the external case, and a circuit board, the secondary battery includes a first external terminal and a second external terminal, the first external terminal and the second external terminal are housed in the internal case, and at least the first external terminal and the second external terminal are covered with a curable resin in the internal case.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a first stack limiting structure and a second stack limiting structure, wherein the second stack limiting structure is disposed opposite and with a fixed distance to the first stack limiting structure; a plurality of pouch cells, wherein the pouch cells are disposed in a stack, wherein the stack is disposed between the first stack limiting structure and the second stack limiting structure and a height of the stack in a stack direction is limited by the first stack limiting structure and the second stack limiting structure; and a sensor arrangement. The sensor arrangement is disposed in the stack. The sensor arrangement extends across a major part of a surface of the pouch cells and is configured such that the height of the stack across the extension is approximately equal. The sensor arrangement has a pressure sensor.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power, and includes: a stack limiting structure; a plurality of pouch cells, wherein the pouch cells are disposed in a stack, wherein the stack is disposed within the stack limiting structure; an outer temperature sensor, wherein the outer temperature sensor is disposed and configured for measuring an outer temperature of the stack outside the stack at an edge of the stack or the stack limiting structure, and/or outside the stack limiting structure; and a control device. The control device is configured for comparison of the measured outer temperature and/or a quantity based on the measured outer temperature to at least one temperature comparative value. The at least one temperature comparative value is a function of at least one of the pouch cells. The control device is configured for controlling the battery pack in response to a result of the comparison.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a plurality of accumulator cells, wherein the accumulator cells have cell contacts; at least one circuit board, wherein the at least one circuit board is electrically connected to the cell contacts; and a battery pack housing, wherein the battery pack housing has a first battery pack housing part and a second battery pack housing part, wherein the first battery pack housing part and the second battery pack housing part are closed by each other. The accumulator cells are disposed within the battery pack housing.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a first stack limiting structure and a second stack limiting structure, wherein the second stack limiting structure is disposed opposite and with a fixed distance to the first stack limiting structure; a plurality of pouch cells, wherein the pouch cells are disposed in a stack, wherein the stack is disposed between the first stack limiting structure and the second stack limiting structure and a height of the stack in a stack direction is limited by the first stack limiting structure and the second stack limiting structure; and a sensor arrangement. The sensor arrangement is disposed in the stack. The sensor arrangement extends across a major part of a surface of the pouch cells and is configured such that the height of the stack across the extension is approximately equal. The sensor arrangement has a pressure sensor.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power. The battery pack includes: a stack housing, wherein the stack housing has a common housing opening defined by a housing edge, and a plurality of pouch cells, wherein the pouch cells have cell tabs and are configured and disposed in a stack within the stack housing such that the cell tabs at least with tab parts on the common housing opening project beyond at least one edge portion of the housing edge. The tab parts are directly electrically connected to each other by welded connections.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power. The battery pack includes: a plurality of pouch cells, wherein the pouch cells have cell tabs and are configured and disposed in a stack such that the cell tabs are disposed on a common tab side of the stack in two tab columns, wherein averted end limits of the tab columns define an intermediate zone, and a circuit board. The circuit board is disposed within the intermediate zone and is electrically connected to the cell tabs.

Abstract: There is provided an electric apparatus including a battery (6); a first pair of motors (3a, 3d) coupled with a first pair of wings and a second pair of motors (3b, 3e) coupled with a second pair of wings; and a first motor control circuitry (12ad) configured to control, the first pair of motors and a second motor control circuitry (12be) configured to control the second pair of motors. The battery (6) is configured to supply power to the first motor control circuitry (12ad) via a first power line, and the battery (6) is configured to supply power to the second motor control circuitry (12be) via a second power line.

Abstract: A battery pack having a secondary battery is disclosed. The battery pack comprises at least one voltage converter; and switching means for switching an operation mode of the voltage converter to one of a charging mode and a discharging mode, in the charging mode, a charging voltage being output to the secondary battery, in the discharging mode, a voltage of the secondary battery being converted into a predetermined discharging voltage and the converted voltage being output.

Abstract: A battery pack having a secondary battery is disclosed. The battery pack comprises at least one voltage converter; and switching means for switching an operation mode of the voltage converter to one of a charging mode and a discharging mode, in the charging mode, a charging voltage being output to the secondary battery, in the discharging mode, a voltage of the secondary battery being converted into a predetermined discharging voltage and the converted voltage being output.