Robert Boschgmbh

Stefan Roepke

Rainer Glauning

Volker Bosch

Arnim Fiebig

Hans-Joachim Baur

Guenter Lohr

Guenther Lohr

Bernd Wirnitzer

An equipment system includes a battery unit () having a monitoring circuit (), which detects at least one operating parameter of the battery unit () and furnishes a control signal, dependent on the operating parameter, for switching means (). The switching means control the charging and discharging process of the battery unit () and are located in the electrical device () and in the charger (), respectively. From the battery unit (), the control signal is transmitted to the switching means () in the electrical device () and in the charger (), respectively. By this provision of shifting the switching means () out of the battery unit () into the electrical device () and into the charger (), respectively, the heat development in the battery unit () and also its structure size are reduced.

Equipment system comprising a battery-operated electrical device, a rechargeable battery unit, and a battery charger

An energy storage module for current supply of an electrical apparatus, in particular for an electrical hand-held machining tool, has a plurality of cells for storage of electrical energy, at least one cell support mounting the cells, being in contact with the cells, enclosing the plurality of cells and made from a heat-conductive material, and at least one cooling body formed on the cell support.

Energy storage module and electrical apparatus

An operating mechanism for an electrical apparatus (), in particular, for a hand-held machining tool, includes a storage () for inputting of control data and/or a control program for controlling the electrical apparatus (), as well as a control unit () connected with the storage () for controlling the operation of the electrical apparatus () according to the stored control data or the stored control program. The storage () in operation is re-writable, in order to enable the control program or the control data upon assembly to operate according to apparatus specifications or the control program or to adjust the control data during the operation. In addition, the invention relates to an electrical apparatus with the above-type of operating mechanism and a corresponding method of operation.

Operating mechanism, electrical apparatus, and associated method of operation

A monitoring device for an electrical machining tool, in particular for temperature monitoring with an accumulator-driven machine, includes a switch element () for separating an electrical consumer () from a current supply device (). For detection of a first operating parameter (T) of the consumer () and/or the current supply device (), a first sensor () is provided, whereby the first sensor () is connected with a display unit and/or with the control input of the switch element, in order to control the switching process as a function of the first operating parameter (T). Furthermore, the present invention relates to an electrical machining tool as well as a current supply device with the inventive monitoring device and a corresponding method of operation.

Monitoring device, electrical machine tool, current supply device, and associated method of operation

A power control device of an electric tool has a control or regulating device for adjusting a power output to an electric motor of the electric tool by means of a pulse width modulation, and a frequency transmitter that varies a frequency of the pulse width modulation in dependence on a required power output; also a method for power control in an electric tool, as well as an electric tool with a power control device are provided as well.

Power control device of an electric tool, a method of power control of an electric tool and an electric tool provided with a power control device

A measuring arrangement, in particular, for temperature measurement in an accumulator pack, with at least one cell () for storage of electrical energy, at least one cooling body () thermally connected with the cell () for cooling the cell (), and at least one temperature sensor (). The temperature sensor () is thermally connected with the cooling body ().

Temperature measuring arrangements in a battery pack for a hand-held tool

A measuring arrangement, particularly for measuring the temperature of an accumulator cell, includes an object of measurement (), a support element (), and a temperature sensor () electrically connected with the support element (). The temperature sensor () is mounted on the support element () and is thermally connected with the object of measurement (). The invention relates further to an energy storage module with this type of measuring arrangement, as well as to an electrical apparatus with this type of energy storage module.

Measuring arrangement, energy storage module, and electrical apparatus

A contact arrangement for providing an electrical plug connection between an electrical device and an exchangeable storage battery for a current supply of the electrical device has a plug part having at least one contact tong with two oppositely located contact surfaces, a receiving part having at least two oppositely located contact fingers between which the contact tong of the plug part is insertable, the contact fingers at one end being clamped and elastically bendable for clamping at another free end being clamped between the contact fingers of the contact tong in an inserted condition, the contact fingers being bent relative to one another in a configuration from the group consisting at an angle and convexly and being pressed with a contact surface arranged at an apex of a bending against a neighboring contact surface of the contact tong, the apexes of the both contact fingers being offset relative to one another in an insertion direction of the contact tong and overlapping before the insertion of the contact tong when considered in the insertion direction.

Contact arrangement with an electrical plug connection

A battery unit including a battery () is equipped with a monitoring circuit () for detecting and evaluating operating variables related to charge state of the battery (). So that energy is not drawn from the battery () by its own monitoring circuit () when an external load () powered by the battery unit is shut off, the supply of electrical power to the monitoring circuit () in the battery unit is disconnected, either immediately or after a certain time delay, when the load () is shut off. This slows the discharge of the battery () when it is not supplying electrical to the load ().

Growing community of inventors

Leinfelden, Germany

Stefan Roepke