Abstract: A battery pack is disclosed that includes a housing, including a cell holder, including at least one battery cell, the battery cell being at least partially received in the cell holder, including a cell connector, the cell connector being designed for electrical connection of the battery cell, and including a printed circuit board, the cell connector being electrically connected to the printed circuit board. The battery pack also has a mounting element to support the connection of the cell connector to the printed circuit board, the mounting element being located in a cut-out of the printed circuit board.

Abstract: The disclosure relates to a rechargeable battery pack for a hand-held power tool, having an interface for establishing an electrical connection of the rechargeable battery pack to a hand-held power tool and/or a charging device. The interface has contact elements for electrically contacting corresponding mating contact elements on the hand-held power tool and/or on the charging device. One contact element is a signal contact element which is electrically connected to an encoder element of the rechargeable battery pack. A rechargeable battery pack electronics is configured to provide information relating to the rechargeable battery pack via the signal contact element, said information relating to the rechargeable battery pack being stored, at least in part, in the at least one encoder element, wherein in the rechargeable battery pack electronics, the encoder element is connected, in an electric parallel circuit, in parallel with a dynamic current path.

Abstract: A method detects electrical fault states of a 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 removable battery pack, using a first monitoring unit integrated in the removable battery pack. The method includes measuring a charging or discharge current using a first current measuring apparatus integrated in the electrical device and transmitting the measured current directly or as a converted voltage value to the first monitoring unit of the removable battery pack, and determining, using the first monitoring unit, based on the charging or discharge current and/or the voltage value calculated therefrom, whether the removable battery pack is operating in a permissible operating range.

Abstract: A battery pack includes (i) at least one connection interface for connection to an electrical consumer, in particular an electric hand tool, and/or to a charging device, and (ii) a signal output unit configured so as to output at least one analog signal and at least one digital signal via at least one shared signal contact of the connection interface. The signal output unit includes at least one electric circuit configured so as to switch between a digital operating mode of the signal output unit and an analog operating mode of the signal output unit.

Abstract: The disclosure relates to a battery back for a hand-held power tool comprising a battery pack housing. An interface of the battery pack housing has contact elements for contacting corresponding counter contact elements on the hand-held power tool and/or the charging device. A battery pack electronics system comprises a charge current path and a discharge current path. The charge current path is designed to connect the contact elements to the battery cell during a charging of the at least one battery cell, while the discharge current path is designed to connect the contact elements to the battery cell during a discharging of the at least one battery cell. The charge current path and the discharge current path are at least partially electrically separate from one another. The battery pack also comprises a first switch element for switching between at least the charge current path and the discharge current path.

Abstract: A method for charging or discharging an exchangeable energy store by means of an electrical device includes connecting a first electromechanical interface of the energy store to a further electromechanical interface of the electric device, applying a first measurement signal to a first signal contact or data contact of the further electromechanical interface without a charging or discharging current flowing, detecting a first voltage drop between the first signal contact or data contact and a first power contact of the further electromechanical interface operatively connected to the first signal contact or data contact, applying a charging or discharging current to the power contact of the further electromechanical interface, detecting again a first voltage drop between the first signal contact or data contact and the first power contact of the further electromechanical interface of the electrical device, and calculating a voltage difference between the two detected first voltage drops.

Abstract: A fuse device for at least one battery cell includes (i) a fuse element for interrupting a current flow from the battery cell in a critical state of the battery cell, (ii) a heating unit, which is connected, in particular electrically and/or thermally and/or mechanically, to the fuse element, and is provided to assist a triggering of the fuse element, (iii) a control unit for activating the heating unit in the critical state, and (iv) at least one carrier element for receiving the fuse element and at least one heating element of the heating unit.

Abstract: An energy storage unit for an electrical consumer includes at least one energy storage cell, a first printed circuit board for electrically contacting the at least one energy storage cell having a first and a second power supply contact of the energy storage unit. The first printed circuit board is arranged adjacent to the at least one energy storage cell and comprises at least one temperature sensor for sensing a temperature of the at least one energy storage cell. At least one further printed circuit board is electromechanically connected to the first printed circuit board and the at least one temperature sensor is arranged on the at least one further printed circuit board. The energy storage unit can be used with an electrical consumer such as a hand-held power tool with the energy storage unit designed as a removeable battery pack.

Abstract: A battery pack includes a monitoring device, at least one first switching element, an interface having a plurality of electrical contacts, and a measurement circuit. The monitoring device is configured to actuate the at least one first switching element, such that a charge or discharge current is interrupted or enabled via at least two of the electrical contacts of the plurality of electrical contacts. The measurement circuit is configured to convert a voltage value of a monitoring voltage into a measurement value of a measurement voltage in order to actuate the at least one first switching element. The monitoring device is configured to compare the measurement value with at least one first limit value and, when the limit value is exceeded or undershot, the monitoring device is configured to open the at least one first switching element.

Abstract: A removable battery pack includes a monitoring unit, an electromechanical interface, and at least one first switching element. The electromechanical interface includes a plurality of electrical contacts. A first electrical contact is configured to serve as a first power supply contact, to which a first reference potential is applied, and a second electrical contact is configured to serve as a second power supply contact, to which a second reference potential is applied. The at least one first switching element is configured to interrupt or enable a charging or discharging current across the first power supply contact and the second power supply contact. The monitoring unit is configured to control the at least one first switching element based on a switching potential. The switching potential is directly derived from the first reference potential. The switching potential is decoupled with respect to voltage fluctuations and voltage drops of the first reference potential.

Abstract: A removable battery pack includes an electromechanical interface and a measuring circuit. The electromechanical interface includes a plurality of electrical contacts. A first of the electrical contacts serves as a first power supply contact to which a first reference potential is applied, and a second of the electrical contacts serves as a second power supply contact to which a second reference potential is applied. The electromechanical interface further includes at least one first switching element configured to interrupt or enable a charging or discharging current across the first and second power supply contacts. The measuring circuit is configured to measure integrated components which are integrated in the removable battery pack, via at least one further contact of the electromechanical interface, which further contact is configured as a signal contact or data contact. The measuring circuit is interconnected with the second contact, which is configured as the second power supply contact.

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 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 rechargeable battery pack for a hand-held power tool, having an interface for establishing an electrical connection of the rechargeable battery pack to a hand-held power tool and/or a charging device. The interface has contact elements for electrically contacting corresponding mating contact elements on the hand-held power tool and/or on the charging device. One contact element is a signal contact element which is electrically connected to an encoder element of the rechargeable battery pack. A rechargeable battery pack electronics is configured to provide information relating to the rechargeable battery pack via the signal contact element, said information relating to the rechargeable battery pack being stored, at least in part, in the at least one encoder element, wherein in the rechargeable battery pack electronics, the encoder element is connected, in an electric parallel circuit, in parallel with a dynamic current path.

Abstract: The disclosure relates to a battery back for a hand-held power tool comprising a battery pack housing. An interface of the battery pack housing has contact elements for contacting corresponding counter contact elements on the hand-held power tool and/or the charging device. A battery pack electronics system comprises a charge current path and a discharge current path. The charge current path is designed to connect the contact elements to the battery cell during a charging of the at least one battery cell, while the discharge current path is designed to connect the contact elements to the battery cell during a discharging of the at least one battery cell. The charge current path and the discharge current path are at least partially electrically separate from one another. The battery pack also comprises a first switch element for switching between at least the charge current path and the discharge current path.

Abstract: A battery pack is disclosed that includes a housing, including a cell holder, including at least one battery cell, the battery cell being at least partially received in the cell holder, including a cell connector, the cell connector being designed for electrical connection of the battery cell, and including a printed circuit board, the cell connector being electrically connected to the printed circuit board. The battery pack also has a mounting element to support the connection of the cell connector to the printed circuit board, the mounting element being located in a cut-out of the printed circuit board.

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 and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the removable battery pack, using a first monitoring unit integrated in the removable battery pack. The method includes measuring a charging or discharge current using a first current measuring apparatus integrated in the electrical device and transmitting the measured current directly or as a converted voltage value to the first monitoring unit of the removable battery pack, and determining, using the first monitoring unit, based on the charging or discharge current and/or the voltage value calculated therefrom, whether the removable battery pack is operating in a permissible operating range.