Abstract: A battery pack having a specified number of battery cells connected to one another and having a monitoring unit, in particular of the type of an SCM circuit, for the individual battery cells. The monitoring unit has a passive input circuit, and is designed to recognize various electrical faults within the passive input circuit using a time measuring unit allocated to the monitoring unit, in particular on the basis of a measurement of rise times of a voltage.

Abstract: A method detects electrical fault states of at least one removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the at least one removable battery pack, using a first monitoring unit integrated in the at least one removable battery pack and a further monitoring unit integrated in the electrical device. The first monitoring unit and the further monitoring unit each count the faulty charging or discharging processes.

Abstract: A method detects electrical fault states of a plurality of energy storage cells interconnected with one another in series and/or in parallel in a removable battery pack using a first monitoring unit integrated in the removable battery pack and a multiplexer measuring apparatus, which can be controlled by the first monitoring unit to sequentially measure cell voltages of the energy storage cells. A further monitoring unit sends a command to the first monitoring unit to control the multiplexer measuring apparatus, and is provided in an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be electrically connected to the removable battery pack.

Abstract: A method controls a charging or discharging current of a removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, using a first monitoring unit integrated in the removable battery pack and a further monitoring unit integrated in the electrical device. The method includes monitoring a defined control potential of a signal or data contact between the removable battery pack and the electrical device using the further monitoring unit.

Abstract: An electrical device includes a housing with a first external contact and a second external contact for supplying the electrical device with power. The electrical device has a first conductor, a second conductor, and an evaluation unit in the housing. The first conductor is electrically connected to a first contact for a first potential. The second conductor is electrically connected to a second contact for a second potential that is different from the first potential. The first conductor and the second conductor are electrically connected to the evaluation unit. The first conductor and the second conductor are configured such that an electrical connection between the first conductor and the second conductor, due to dirt or moisture in the housing, is detected by the evaluation unit.

Abstract: A protective device for an electronic component is connected to an interface and includes a compensation element connected in series with the electronic component. The compensation element has a positive temperature coefficient of its electrical resistance. The compensation element is connected to a pole or measuring contact of an electrical energy accumulator. The electronic component and the compensation element are thermally coupled to one another.

Abstract: The disclosure relates to a protective device for an electronic component connected to an electrical interface, comprising: a detection device for detecting electrical voltage and/or electrical current at the electronic component; a monitoring device; an electronic switch connected in series with the electronic component for disconnecting the electronic component from the electrical interface in the event that an impermissibly high electrical voltage is applied at the electronic component, wherein at least double the nominal voltage is identified as an impermissibly high electrical voltage, wherein in the event that an impermissibly high electrical voltage is no longer detected at the electronic component, the electronic component can be connected to the interface by means of the electronic switch.

Abstract: A method controls a charging or discharging current of a removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, using a first monitoring unit integrated in the removable battery pack and a further monitoring unit integrated in the electrical device. The method includes monitoring a defined control potential of a signal or data contact between the removable battery pack and the electrical device using the further monitoring unit.

Abstract: A method detects electrical fault states of a removable battery pack. Cell voltage values of a plurality of energy storage cells of the removable battery pack are detected by a first monitoring unit integrated in the removable battery pack and a voltage of the removable battery pack is detected by a further monitoring unit integrated in an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the removable battery pack. The cell voltage values detected by the first monitoring unit are transmitted to the further monitoring unit. The further monitoring unit sums the cell voltage values and compares this with the voltage value of the removable battery pack.

Abstract: A method detects electrical fault states of at least one removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the at least one removable battery pack, using a first monitoring unit integrated in the at least one removable battery pack and a further monitoring unit integrated in the electrical device. The first monitoring unit and the further monitoring unit each count the faulty charging or discharging processes.

Abstract: A method detects electrical fault states of at least one energy storage cell of a removable battery pack using a first monitoring unit integrated in the removable battery pack and at least two temperature sensors integrated in the removable battery pack. In an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be electrically connected to the removable battery pack, a measured temperature of a first of the at least two temperature sensors is evaluated by a further monitoring unit of the electrical device and, essentially simultaneously, another measured temperature of a second of the at least two temperature sensors is evaluated by the first monitoring unit of the removable battery pack.

Abstract: A method detects electrical fault states of a plurality of energy storage cells interconnected with one another in series and/or in parallel in a removable battery pack using a first monitoring unit integrated in the removable battery pack and a multiplexer measuring apparatus, which can be controlled by the first monitoring unit to sequentially measure cell voltages of the energy storage cells. A further monitoring unit sends a command to the first monitoring unit to control the multiplexer measuring apparatus, and is provided in an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be electrically connected to the removable battery pack.

Abstract: A battery pack for a handheld power tool has a battery pack housing, at least one cell holder having at least one battery cell, and a battery pack electronics unit that includes at least one flexible, in particular bendable, circuit board.

Abstract: An indicator device for a rechargeable battery pack, in particular, a rechargeable battery pack of a power tool, for indicating a charge state of the rechargeable battery pack, including at least one charge state indicator unit, which includes at least one indicator element for indicating the charge state of the rechargeable battery pack, and including at least one control line for transmitting at least one electrical and/or electronic signal, in particular, as a function of a charge state of the rechargeable battery pack, from a separate control unit of the rechargeable battery pack, in particular, structurally separated with respect to the charge state indicator unit, in particular, from main control electronics of the rechargeable battery pack to the charge state indicator unit. The charge state indicator unit is configured to short-circuit at least one indicator element as a function of the electrical and/or electronic signals transmitted via the control line.

Abstract: A battery pack having a specified number of battery cells connected to one another and having a monitoring unit, in particular of the type of an SCM circuit, for the individual battery cells. The monitoring unit has a passive input circuit, and is designed to recognize various electrical faults within the passive input circuit using a time measuring unit allocated to the monitoring unit, in particular on the basis of a measurement of rise times of a voltage.

Abstract: A rechargeable battery pack, in particular a rechargeable battery pack for a hand-held power tool. The rechargeable battery pack includes a housing in which at least one rechargeable battery cell is accommodated. It is provided that the rechargeable battery pack includes at least one protective element that is connected to the housing.

Abstract: A battery pack for a handheld power tool, having a cell holder that accommodates at least one battery cell, the battery cell having a cladding surface that runs parallel to a longitudinal axis, the cladding surface being limited by two end faces that run perpendicular to the longitudinal axis, and the cladding surface and the end faces forming an outer shell of the battery cell, and a battery pack electronics. The battery pack electronics includes at least one circuit board having contact elements for producing an electrical connection between the battery pack and the handheld power tool, in addition at least one contact arrangement corresponding to the battery cell is provided, the contact arrangement electrically contacting the corresponding battery cell at the cladding surface.

Abstract: A circuit board, which includes at least one contact surface for electrical contacting with a contact partner, so that an electric current can be transferred between the circuit board and the contact partner, the circuit board including structures in the at least one contact area, which are designed to pierce through contaminant layers and/or oxide layers present on the at least one contact partner, the at least one contact area including the at least one contact surface.

Abstract: A rechargeable battery pack including at least one interface for establishing a mechanical and/or electrical connection of the rechargeable battery pack to a hand-held power tool and/or a charging device. The interface includes contact elements for the electrical and/or mechanical contacting of corresponding contact elements on the hand-held power tool and/or corresponding contact elements on the charging device, at least one contact element being a signal contact element electrically connected to a coding element. The rechargeable battery pack also includes a rechargeable battery pack electronics system configured for providing information regarding the rechargeable battery pack via the signal contact element, and storing at least in part in the coding element, and a microcontroller connected to the rechargeable battery pack electronics system in such a way that the microcontroller detects when information is called up at the signal contact element by a hand-held power tool and/or by a charging device.

Abstract: A battery pack for a handheld power tool has a battery pack housing, at least one cell holder having at least one battery cell, and a battery pack electronics unit that includes at least one flexible, in particular bendable, circuit board.