Robert Boschgmbh

Marc-Alexandre Seibert

Christoph Klee

Alexander Osswald

Mickael Segret

Juergen Mack

Andreas Gonser

Holger Wernerus

Tim Brecht

Marcin Rejman

Wolf Zahn

Martin Gonda

Thorsten Seidel

Andreas Sedlmayr

Andreas Friese

Thomas Gabriel

Patrick Roeder

Mischa Nicklaus

Axel Hubertz

Maria Poess

Oliver Klee

Jan Koegel

The disclosure relates to a charging apparatus for a rechargeable battery pack, having a housing, having at least one first rechargeable battery interface that is designed so as to releasably connect the charging apparatus to a first rechargeable battery pack along a first connection direction, having a second rechargeable battery interface that is designed so as to releasably connect the charging apparatus to a second rechargeable battery pack along a second connection direction, wherein the connection directions intersect the rechargeable battery pack in the state connected to the charging apparatus. It is proposed that the first connection direction and the second connection direction are arranged crossing each other.

Charging apparatus for a rechargeable battery pack

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.

Method for detecting electrical fault states of a removable battery pack and/or an electrical device that can be connected to the removable battery pack, and system for carrying out the method

The disclosure is based on a method for the adaptive rapid charging of a battery pack, in particular of an interchangeable battery pack for electric machine tools, by way of a battery charger, wherein, in at least one method step, at least one charging parameter of the battery charger is adjusted depending on at least one parameter of the battery pack. It is proposed, in at least one method step, for the at least one charging parameter to be adjusted depending on at least one charging characteristic diagram that is typical for the battery, is stored in a storage unit of the battery pack and contains at least predefined values of a voltage, temperature and/or current suitable for a charging procedure for the battery pack.

Method for the adaptive rapid charging of a battery pack

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.

Method for detecting electrical fault states in a removable battery pack and system for carrying out the method

A method for charging battery packs for power tools with the aid of a charging device. The charging device has a first charging mode, in which the battery packs are charged up to a defined state of charge using a constant current and subsequently using a constant voltage. At least one second charging mode is settable by a user, in which the battery packs are only partially charged up to a charge limit exclusively using a constant current. A charging device is also described.

Method for charging battery packs for power tools and charging device for carrying out the method

The disclosure relates to a method for adaptively fast-charging a battery pack using a battery charging device. At least one voltage and the temperature of the battery pack are continuously or periodically detected by means of a detection unit. A charging current of the battery charging device is adapted by means of a control and/or regulating unit of the battery charging device on the basis of the detected voltage and/or the detected temperature of the battery pack. At least one battery-specific threshold of the voltage and/or the temperature is taken into consideration in order to adapt the charging current by means of the control and/or regulating unit. Prior to starting the charging process, the battery-specific threshold of the voltage and/or the temperature is transmitted from a memory unit of the battery pack and/or the battery charging device to the control and/or regulating unit by means of a communication unit.

Method for adaptively fast-charging a battery pack using stored limit values

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.

Method for detecting electrical fault states of a removable battery pack and system for carrying out the method

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.

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.

Method for controlling a charging or discharging current of a removable battery pack and/or an electrical device and system for carrying out the method

A method for estimating the state of health of an exchangeable rechargeable battery. The method includes: i. determining a remaining capacity of the battery during a charging operation, in such a manner, that a first charging value is ascertained by measuring an open-circuit voltage, as long as no charging current or only a minimal charging current is flowing; at least one further charging value is ascertained by measuring the charging current in specific time intervals, until the charging operation is completed; and a sum of the ascertained charging values is calculated; ii. determining a remaining performance of the battery during the charging operation in such a manner, that after a predefined battery voltage is reached, the charging current is briefly changed, and the respective battery voltage is measured; and an impedance of the battery is calculated from the quotient of the difference of the measured charging currents and battery voltages.

Method and device for estimating the state of health of an exchangeable rechargeable battery

A method for recognizing contacting errors in a rechargeable battery pack. Each rechargeable battery of the rechargeable battery pack is connected in parallel to at least one further rechargeable battery of the rechargeable battery pack. The method includes: applying at least one current to the rechargeable battery pack; ascertaining at least one voltage that is present at the rechargeable battery pack, as a function of the applied current; determining at least one parameter based on the ascertained voltage; and comparing the parameter to a comparison variable.

Method for recognizing contacting errors in a rechargeable battery pack, and system for carrying out the method

A charging device for charging an energy accumulator unit, in particular a battery pack, of a hand-held power tool. The charging device includes a cooling device for cooling the energy accumulator unit, in particular the battery pack, a charger housing, which at least in sections forms an outer housing, and a receptacle unit which may detachably accommodate the energy accumulator unit, and is provided to accommodate the energy accumulator unit in a connected state and/or hold it at the charging device. The cooling device is provided to form an airflow directed onto the energy accumulator unit in such a way that the airflow at least in sections flows around the energy accumulator unit.

Charging device

A switch-mode power supply includes a control element in a primary circuit for controlling a transformer for transmitting electric energy from the primary circuit to a secondary circuit, a first regulating element in the secondary circuit for regulating an electric output variable of the secondary circuit, and a second regulating element in the primary circuit for regulating an electric controlled variable of the control element as a function of a temperature of the primary circuit, the second regulating element being thermally coupled to an element of the primary circuit whose temperature is to be ascertained.

Switched-mode power supply and method for operating a switched-mode power supply

A switched-mode power supply is provided which has at least one power circuit for supplying a first electrical consumer, and at least one auxiliary power supply unit for generating a first transformer-coupled output voltage for a switching controller for controlling or regulating the power circuit, and at least one further transformer-coupled output voltage for at least one further electrical consumer in a first operating mode. The first and the at least one further transformer-coupled output voltage of the at least one auxiliary power supply unit are variable in comparison with the first operating mode in a further operating mode of the switched-mode power supply.

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Stuttgart, Germany

Marc-Alexandre Seibert