Battery-powered device with electromechanical interface for an interchangeable drive unit

Abstract

Battery-powered device (10, 12, 62) with a battery (24, 26) and with an interchangeable drive unit (14, 16, 64) supplied with energy by the battery (24, 26) via an electromechanical interface (22), wherein the battery (24, 26) is rechargeable via the electromechanical interface (22), wherein the electromechanical interface (22) has at least two electrical contacts (44, 46) or a coil for supplying energy to the interchangeable drive unit (14, 16, 64), and wherein a first contact (44) of the electromechanical interface (22) or the coil is connected to a drain or collector terminal (D) of a first semiconductor switch (48), and a second contact (46) of the electromechanical interface (22) or coil is connected to a source or emitter terminal (S) of the first semiconductor switch (48), characterized in that a Control unit (50) a voltage drop across the first semiconductor switch (48) orThe coil senses and, depending on the voltage drop, detects whether the interchangeable drive unit (14, 16, 64) or a charger (36) is connected to the electromechanical interface (22).

Claims

Battery-powered device (10, 12, 62) with a battery (24, 26) and with an interchangeable drive unit (14, 16, 64) supplied with energy by the battery (24, 26) via an electromechanical interface (22), wherein the battery (24, 26) is rechargeable via the electromechanical interface (22), wherein the electromechanical interface (22) has at least two electrical contacts (44, 46) or a coil for supplying energy to the interchangeable drive unit (14, 16, 64), and wherein a first contact (44) of the electromechanical interface (22) or the coil is connected to a drain or collector terminal (D) of a first semiconductor switch (48), and a second contact (46) of the electromechanical interface (22) or coil is connected to a source or emitter terminal (S) of the first semiconductor switch (48), characterized in that a control unit (50) a voltage drop across the first semiconductor switch (48) orThe coil senses and, depending on the voltage drop, detects whether the interchangeable drive unit (14, 16, 64) or a charger (36) is connected to the electromechanical interface (22). Battery-powered device (10, 12, 62) according to claim 1, characterized in that the first semiconductor switch (48) is part of a power output stage (52) with at least one second semiconductor switch (54). Battery-powered device (10, 12, 62) according to claim 2, characterized in that a further semiconductor switch (56) is connected in series with the power output stage (52), wherein the control unit (50) controls the at least two semiconductor switches (48, 54) of the power output stage (52) and the further semiconductor switch (56) in such a way that when the interchangeable drive unit (14, 16, 64) is connected to the electromechanical interface (22), the interchangeable drive unit (14, 16, 64) is supplied with energy by means of the battery (24, 26), and when the charger (36) is connected to the electromechanical interface (22), the battery (24, 26) is charged. Battery-powered device (10, 12) according to one of the preceding claims, characterized in that the battery-powered device (10, 12) is designed as a battery-powered vacuum cleaner (12) and the interchangeable drive unit (14) is designed as a motor-driven suction nozzle (16). Battery-powered device (10, 62) according to one of the preceding claims 1 to 3, characterized in that the battery-powered device (10, 12) is designed as a hand-held power tool (62) and the interchangeable drive unit (14) is designed as a motor-driven extraction device (64). Battery-powered device (10) according to one of the preceding claims 1 to 3, characterized in that the battery-powered device (10) is designed as a measuring device and the interchangeable drive unit (14) is designed as a motor-driven rotary base.

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