Abstract: Pouch cell having a positive contact lug and a negative contact lug, in which contact lugs electrical contact can be made with the pouch cell pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a flat cell surface which extends parallel in relation to the positive contact lug and the negative contact lug, wherein the positive contact lug has an upper positive connecting element and a lower positive connecting element, which positive connecting elements are arranged on opposite sides of the positive contact lug, and the negative contact lug has an upper negative connecting element and a lower negative connecting element, which negative connecting elements are arranged on opposite sides of the negative contact lug.

Abstract: Pouch cell having a positive contact lug and a negative contact lug, by means of which contact lugs electrical contact can be made with the pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a cell top side as well as a cell bottom side which is situated opposite the cell top side, wherein the positive contact lug has a conductive coating on the cell top side and an insulating coating on the cell bottom side and the negative contact lug has an insulating coating on the cell top side and a conductive coating on the cell bottom side, or vice versa, wherein the positive contact lug has an insulating coating on the cell top side and a conductive coating on the cell bottom side and the negative contact lug has a conductive coating on the cell top side and an insulating coating on the cell bottom side.

Abstract: A rechargeable battery pack which is designed to be detachably received in a receiving bay of an electric handheld power tool and/or a charging station, wherein the rechargeable battery pack has at least one rechargeable battery cell which is arranged within a housing of the rechargeable battery pack, wherein the rechargeable battery pack has a mechanical lock with a release position and a locked position, wherein the mechanical lock is designed to prevent the rechargeable battery pack from being received in the receiving bay in the locked position, and wherein the mechanical lock is tripped by an increase in volume of the rechargeable battery cell.

Abstract: A rechargeable battery pack for an electric hand-held power tool, wherein the rechargeable battery pack has a housing with at least one pouch cell arranged therein, wherein a deformable pressure equalizing element is arranged parallel to the pouch cell in such a way that the pressure equalizing element can yield to an increase in volume of the pouch cell, wherein the pressure equalizing element is profiled, so that a convection current can pass along the pouch cell in spite of the increase in volume of the pouch cell.

Abstract: A rechargeable battery pack having at least two pouch cells stacked on top of one another, wherein each of the pouch cells is enclosed in a metal foil, wherein the metal foils are electrically insulated from one another and electrical contact is made with each of the metal foils for the purpose of measuring a capacitor capacitance formed by the metal foils.

Abstract: Pouch cell having a positive contact region and a negative contact region, by which contact regions electrical contact can be made with the pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a cell top side as well as a cell bottom side which is situated opposite the cell top side, wherein the positive contact region is located exclusively on the cell top side and the negative contact region is located exclusively on the cell bottom side, or vice versa.

Abstract: Charging an accumulator having an energy storage cell, a data interface and a wake-up circuit. A charging apparatus contains a data interface, a controller, a timer and a switch apparatus. The data interfaces connected to one another via a communication line for differential communication between the accumulator and charging apparatus. Setting the timer to a predetermined period of time; setting the control electronics of the accumulator to a deactivation mode; sending at least one signal from the charging apparatus to the accumulator via the communication line after the predetermined period of time has elapsed; activating the wake-up circuit for activating control electronics by detecting a voltage value from the communication line, the voltage value is consistent with either the dominant or recessive state of the communication line; setting the control electronics to an activation mode; and requesting or releasing a charging current from the charging apparatus using the accumulator.

Abstract: A method for the open-loop and closed-loop control of a power tool with at least one rechargeable battery, a drive and at least one control device, the rechargeable battery serving as an energy supply for the power tool. The method includes the method steps of: recording at least one temperature value of the rechargeable battery by a temperature measuring device; recording at least one first voltage value of the rechargeable battery by a voltage measuring device; and setting a first performance parameter value of the power tool to a second performance parameter value of the power tool for setting a current intensity value if the recorded temperature value corresponds to a predetermined temperature threshold value and the recorded voltage value corresponds to a predetermined voltage threshold value. A system including a power tool and at least one rechargeable battery for supplying the power tool with electrical energy for carrying out the method.

Abstract: A power tool with at least one control device and at least one communication circuit for exchanging signals in a half-duplex mode with a first and a second communication line for differential communication between at least a first transceiver and a second transceiver. A system including a power tool with at least one control device and a rechargeable battery with at least one set of control electronics, the rechargeable battery being designed for supplying the power tool with electrical energy. The system includes at least one communication circuit for exchanging signals in a half-duplex mode with a first and a second communication line for differential communication between at least a first transceiver and a second transceiver.

Abstract: A method for controlling a rechargeable battery on a machine tool contains the steps of: setting the control electronics of the rechargeable battery to a deactivation mode, with the result that no current flows from the rechargeable battery into the control electronics and to the machine tool; transmitting at least one signal from the machine tool to the rechargeable battery via the first and second communication lines; activating the wake-up circuit for activating control electronics by detecting a voltage value from the first or second communication line, wherein the voltage value corresponds to either the dominant or the recessive state of the first or second communication line; setting the control electronics of the rechargeable battery to an activation mode via the wake-up circuit; and enabling current to be drawn from the rechargeable battery by the machine tool.

Abstract: Rechargeable battery for a machine tool containing at least one energy storage cell and also one switching apparatus. The rechargeable battery contains a bypass circuit which can be operated in a first and second mode, wherein the bypass circuit is in an inoperative state in the first mode, so that an electric current with a first current value passes from the at least one energy storage cell to the machine tool via the switching apparatus, and wherein the bypass circuit is in an operating state in the second mode, so that an electric current with a second current value passes from the at least one energy storage cell to the machine tool via the bypass apparatus, and wherein the first current value is greater than the second current value.

Abstract: A pouch cell having at least one connection electrode via which the pouch cell can be electrically contacted, wherein the pouch cell includes a current interrupter configured, by virtue of a thermally induced change in its geometric dimensioning, at least temporarily to interrupt drawing of current via the connection electrode. Preferably, the current interrupter includes a material having a negative coefficient of thermal expansion, wherein the thermally induced change in its geometric dimensioning is brought about by a change in a pouch cell temperature.

Abstract: Pouch cell having a positive contact lug and a negative contact lug, in which contact lugs electrical contact can be made with the pouch cell pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a flat cell surface which extends parallel in relation to the positive contact lug and the negative contact lug, wherein the positive contact lug has an upper positive connecting element and a lower positive connecting element, which positive connecting elements are arranged on opposite sides of the positive contact lug, and the negative contact lug has an upper negative connecting element and a lower negative connecting element, which negative connecting elements are arranged on opposite sides of the negative contact lug.

Abstract: A rechargeable battery pack having at least one pouch cell, wherein the rechargeable battery pack has at least one interrupter, which is designed to at least temporarily interrupt a current draw from the pouch cell and/or from the rechargeable battery pack, wherein the interrupter is tripped by an expansion of the at least one pouch cell.

Abstract: Pouch cell having a positive contact region and a negative contact region, by which contact regions electrical contact can be made with the pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a cell top side as well as a cell bottom side which is situated opposite the cell top side, wherein the positive contact region is located exclusively on the cell top side and the negative contact region is located exclusively on the cell bottom side, or vice versa.

Abstract: Method for charging an accumulator having an energy storage cell, a data interface and a wake-up circuit. A charging apparatus contains a data interface, a controller, a timer and a switch apparatus. The data interfaces are connected to one another via a communication line for differential communication between the accumulator and the charging apparatus.

Abstract: The battery unit according to the invention for a handheld machine tool comprises a number of battery cells, with at least one of the battery cells being embodied as an isolation battery cell, and showing a fire protection jacket comprising an intumescent material. The fire protection jacket surrounds the isolation battery cell at least partially such that the isolation battery cell is surrounded by the fire protection jacket at a predetermined temperature such that the isolation battery cell is thermally insulated.

Abstract: A method for controlling a rechargeable battery on a machine tool contains the steps of: setting the control electronics of the rechargeable battery to a deactivation mode, with the result that no current flows from the rechargeable battery into the control electronics and to the machine tool; transmitting at least one signal from the machine tool to the rechargeable battery via the first and second communication lines; activating the wake-up circuit for activating control electronics by detecting a voltage value from the first or second communication line, wherein the voltage value corresponds to either the dominant or the recessive state of the first or second communication line; setting the control electronics of the rechargeable battery to an activation mode via the wake-up circuit; and enabling current to be drawn from the rechargeable battery by the machine tool.

Abstract: A method for ascertaining a charge value for a system containing a power tool and a rechargeable battery used to supply the power tool with electrical energy. The method contains the method steps of detecting a first charge value of an electrical charge of the rechargeable battery at a first time instant; detecting a current value of an electric current flowing from the rechargeable battery to the power tool to supply the electrical load in the power tool, between a second time instant and third time instant (t2, t3); ascertaining a second charge value on the basis of the detected current value between a second time instant and third time instant; and subtracting the second charge value from the first charge value in order to ascertain a third charge value at the second time instant. Also provided is a rechargeable battery, power tool, and system containing a rechargeable battery and a power tool for performing the method.

Abstract: Rechargeable battery for a machine tool containing at least one energy storage cell and also one switching apparatus. The rechargeable battery contains a bypass circuit which can be operated in a first and second mode, wherein the bypass circuit is in an inoperative state in the first mode, so that an electric current with a first current value passes from the at least one energy storage cell to the machine tool via the switching apparatus, and wherein the bypass circuit is in an operating state in the second mode, so that an electric current with a second current value passes from the at least one energy storage cell to the machine tool via the bypass apparatus, and wherein the first current value is greater than the second current value.