Abstract: System having at least one first receiving apparatus for receiving at least one first rechargeable battery, wherein the at least first rechargeable battery includes a temperature sensor for measuring at least one temperature value of the rechargeable battery, wherein the at least first receiving apparatus includes a charging device for charging the rechargeable battery with electrical energy, a cooling device for cooling the rechargeable battery, and a heating device for heating the rechargeable battery.

Abstract: A method includes adjusting a rechargeable battery from a first state of charge to a second state of charge; creating a first current intensity value after a first predetermined time duration has elapsed, after a predetermined temperature value has been reached, after a predetermined current intensity value has been reached, or if the difference between a first and a second ascertained current intensity value reaches a predetermined threshold value; ascertaining a first voltage value after the first current intensity value has been reached; adjusting a second current intensity value after a second predetermined time duration has elapsed; ascertaining a second voltage value after the second current intensity value has been reached; and determining a first impedance value of the rechargeable battery from the quotient of the difference between the first and second current intensity values and the difference between the first and second voltage values. Rechargeable battery and charger for carrying out the method.

Abstract: Method for controlling in an open and closed loop a power tool, in particular a handheld power tool, including a power tool housing, a control unit, a drive, a tool fitting, and an output device, with the method steps of detecting at least one acceleration value via the at least one acceleration sensor; sending at least one signal to the output device for the purpose of outputting at least one acoustic and/or visual warning signal if a detected acceleration value reaches a threshold value saved in the memory device, and/or sending at least one signal from the control unit for adjusting the drive from a first operating state into a second operating state.

Abstract: A system (100) having a power tool and at least one rechargeable battery as an energy supply for the power tool having at least one energy storage element, including a locking apparatus having at least one locking element for releasably connecting the at least one rechargeable battery to the power tool. The locking apparatus includes at least one actuator for reversibly moving the at least one locking element from a first position into a second position, wherein, in the first position, the rechargeable battery may be moved relative to the power tool and, in the second position, the rechargeable battery is immovably connected to the power tool.

Abstract: An energy supply device is provided, in particular for a power tool, the energy supply device being detachably connectable to the power tool. The energy supply device includes at least one element for locking the energy supply device in the power tool, wherein the at least one locking element is mounted rotatably about at least one first axis of rotation, wherein the first axis of rotation runs through a pivot point of the at least one locking element. In this case, the pivot point of the locking element precedes a locking location in an insertion direction. The energy supply device has at least one element for actuation by a user, wherein the at least one actuating element is mounted rotatably about at least one second axis of rotation which runs through a pivot point of the actuating element. In this case, the pivot point of the at least one locking element can precede a locking location in an insertion direction. In a second aspect, the invention relates to a power tool having a energy supply device.

Abstract: An energy supply device for a power tool, wherein the energy supply device comprises at least one cell. The at least one cell has a nominal capacity of at least 1.5 ampere hours, as well as a surface area A and a volume V. The surface area A of the at least one cell is greater than eight times the cube root of the square of the volume V of the at least one cell. In addition, a ratio of resistance and surface area of the at least one cell is less than 0.2 millionm/cm2. A power tool having a energy supply device is also provided.

Abstract: An energy supply device, in particular for a power tool, wherein the energy supply device includes at least one current-disconnecting element having a rated current-carrying capacity I_N, the rated current-carrying capacity I_N of the at least one current-disconnecting element being greater than a value of the following expression: 1000·(DCR_I){circumflex over (d)}?0.6, where DCR_I is the internal resistance of the energy supply device and is measured in accordance with standard IEC61960. A peak current-carrying capacity I_P of the at least one current-disconnecting element for a loading duration of at least 100 milliseconds can be greater than 3000·(DCR_I){circumflex over (?)}?0.6.

Abstract: A system including a power tool and an energy supply device, wherein the energy supply device is provided for supplying the power tool with electrical energy. The energy supply device can be releasably connected to the power tool via an interface, wherein the interface comprises at least a female contact partner and a male contact partner. The interface has a total electrical transition resistance per pole of less than 0.4 milliohm, preferably less than 0.3 milliohm and particularly preferably less than 0.2 milliohm. The interface has at least six, preferably at least eight, and particularly preferably at least twelve individual contact points per pole, and wherein the energy supply device has at least one energy storage cell, wherein the at least one energy storage cell has an internal resistance DCR_I of less than 10 milliohm. In addition, the interface may comprise more than six, preferably more than eight and most preferably more than twelve individual contact points.

Abstract: A system including a machine tool and an energy supply device, the energy supply device being designed to supply electric energy to the machine tool. The energy supply device can be releasably connected to the machine tool via an interface, wherein the interface includes at least one female contact partner and a male contact partner, and the contact partners can be releasably connected together via a plug connection. The interface has a total electric transmission resistance per pole of less than 0.4 milliohm, preferably less than 0.3 milliohm, particularly less than 0.2 milliohm. Furthermore, the interface can have more than six, preferably more than eight and at most preferably more than twelve individual contact points. A second aspect of the invention relates to an energy supply device for use in the system.

Abstract: A system including a power tool and an energy supply device, wherein the energy supply device is provided for supplying the power tool with electrical energy. The energy supply device can be releasably connected to the power tool via an interface, wherein the interface includes at least a female contact partner and a male contact partner. The female contact partner and the male contact partner are in contact with each other in at least a first contact region and in a second contact region. The first contact region may be defined by a first contact normal force, while the second contact region may be defined by a second contact normal force, wherein the first contact normal force and the second contact normal force have different orientations. In addition, the interface can include an elastic means for reducing the relative movement between the male contact partner and the female contact partner. An interface for transmitting electrical energy, and to an energy supply device is also provided.

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: Rechargeable battery as an energy supply for a power tool with at least a first and a second energy storage element. At least a first retaining device for receiving and retaining the at least first energy storage element and at least a second retaining device for receiving and retaining the at least second energy storage element is included, wherein at least a subregion of an outer surface of the at least first and/or second retaining device is configured such that at least one gap for a cooling fluid is provided between adjacent retaining devices. Power tool with at least one rechargeable battery.

Abstract: A system including a power tool and a first and a second energy supply device, wherein the energy supply devices can be detachably connected to the power tool via an interface. The first energy supply device has a number a of at least two contact partners for transmitting electrical energy to the power tool, whilst the second energy supply device has a number b of at least two contact partners for transmitting electrical energy to the power tool, wherein the number a of contact partners of the first energy supply device differs from the number b of contact partners of the second energy supply device. A system in which the contact partners of the energy supply devices have different coatings.

Abstract: A system including a power tool and an energy supply device, wherein the power tool can be detachably connected to the energy supply device via an interface. The interface has a base material with a first density and is designed in such a way that the interface allows a relative movement of the power tool and the energy supply device in an insertion direction and prevents a relative movement between the power tool and the energy supply device in the other spatial directions. The energy supply device has a first contact region with a first contact material and the power tool has a second contact region with a second contact material, wherein the first contact material and/or the second contact material have a second density, wherein the second density is greater than the first density of the base material of the interface. An energy supply device, and to a corresponding interface is also provided.

Abstract: A rechargeable battery for a machine tool, having a cell core is provided, wherein no point within the cell core is at a distance of more than 5 mm away from a surface of the rechargeable battery and the rechargeable battery has a capacity of at least 2.2 Ah. A battery pack and a machine tool are also disclosed.

Abstract: A rechargeable battery pack having at least one pouch cell, wherein the rechargeable battery pack has at least one electrically conductive filament which surrounds the pouch cell at least in sections in such a way that expansion of the pouch cell causes severing of the filament.

Abstract: A system including a power tool and an energy supply device, wherein the energy supply device is provided for supplying the power tool with electrical energy. The energy supply device can be releasably connected to the power tool via an interface, wherein the interface includes at least a female contact partner and a male contact partner. The female contact partner and the male contact partner are in contact with each other in at least a first contact region and in a second contact region. The first contact region may be defined by a first contact normal force, while the second contact region may be defined by a second contact normal force, wherein the first contact normal force and the second contact normal force have different orientations. In addition, the interface can include an elastic means for reducing the relative movement between the male contact partner and the female contact partner. An interface for transmitting electrical energy, and to an energy supply device is also provided.

Abstract: An energy supply device is provided, in particular for a power tool, the energy supply device being detachably connectable to the power tool. The energy supply device includes at least one element for locking the energy supply device in the power tool, wherein the at least one locking element is mounted rotatably about at least one first axis of rotation, wherein the first axis of rotation runs through a pivot point of the at least one locking element. In this case, the pivot point of the locking element precedes a locking location in an insertion direction. The energy supply device has at least one element for actuation by a user, wherein the at least one actuating element is mounted rotatably about at least one second axis of rotation which runs through a pivot point of the actuating element. In this case, the pivot point of the at least one locking element can precede a locking location in an insertion direction. In a second aspect, the invention relates to a power tool having a energy supply device.

Abstract: An electric motor, in particular for a power tool, the electric motor having a stator with an inner opening for receiving a rotor. The inner opening has a diameter corresponding to an inner diameter of a stator, the stator having a series of pole teeth, which are each wound with a winding to form a coil. The winding is characterized by a reference diameter, a ratio of the reference diameter to the stator inner diameter multiplied by a number of pole teeth being greater than 0.3. Taking into account the internal resistance of an energy storage cell of an energy supply device of a maximum of 10 milliohms, the ratio of the diameters may be greater than 0.03 (milliohms)?1. Also provided is an electric motor, in particular for a power tool, a ratio being formed from a sum of total winding conductor cross sections and a free winding cross section, the ratio being multiplied by a number of pole teeth and the product being greater than 2.2.

Abstract: An energy supply device is provided, in particular for a power tool, the energy supply device being detachably connectable to the power tool. The energy supply device includes at least one element for locking the energy supply device in the power tool, wherein the at least one locking element is mounted rotatably about at least one first axis of rotation, wherein the first axis of rotation runs through a pivot point of the at least one locking element. The energy supply device includes at least one energy storage cell which has an internal resistance DCR_I of less than 10 milliohms (mOhm). In this case, the pivot point of the at least one locking element can precede a locking location in an insertion direction. A power tool having a energy supply device is also provided.