EP3560063A1 - Handwerkzeugsystem - Google Patents
HandwerkzeugsystemInfo
- Publication number
- EP3560063A1 EP3560063A1 EP17822192.5A EP17822192A EP3560063A1 EP 3560063 A1 EP3560063 A1 EP 3560063A1 EP 17822192 A EP17822192 A EP 17822192A EP 3560063 A1 EP3560063 A1 EP 3560063A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery pack
- temperature
- hand tool
- charger
- tool system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
Definitions
- the present invention relates to a hand tool system according to claim 1.
- Electric hand tool machines such as impact wrenches, drills, angle grinders, jigsaws, circular saws or planing machines for craftsmen or DIY needs usually have either an AC motor or a DC motor as the drive motor. While the former is usually fed via a mains cable with AC power from the grid, the electrical energy for supplying the DC motor usually comes from a so-called battery pack, a rechargeable battery in a couplable to the housing of the power tool housing, the coupling of the both housing is electrically connected to the power supply lines of the DC motor.
- Such battery packs are basically known and have rechargeable accumulators, usually a plurality of battery cells connected in parallel and / or series connection. In the course of this application is under a battery pack thus preferably consisting of several electrically interconnected battery cells
- Akkumulatorenbyte understand that can store electrical energy and supplies the energy for the operation of the power tool and interchangeable in a chamber, an interface or the like of the power tool is added.
- Charging the battery packs is usually done via a coupling of the battery pack to a charger, so that electrical energy can be transmitted via cable and conductor.
- the charging via a wireless and wireless power transmission is possible, the technique is usually based on the near field transmission.
- MI magnetic induction
- MR magnetic resonance
- capacitive fields In inductive coupling with magnetic induction, energy is transferred from the energy transmitter, the primary coil, to the energy receiver, the secondary coil, via magnetic fields.
- an RF alternating current with a frequency of 100 kHz to 205 kHz in the primary coil generates a magnetic field which is induced in the secondary coil and generates an induction voltage there.
- the charging of the battery packs is more often on the move and the classic areas, such as the workshop or the like leaves and thus the charging must be done under widely varying temperature conditions.
- the charging in motor vehicles is to be expected with particularly difficult climatic conditions, since too low outside temperatures specified by the cell manufacturer charging temperature ranges can not be met, so that the battery packs to be charged must first be removed from the vehicle and warmed up in a warmer environment ,
- the object of the invention is to improve the abovementioned disadvantages and to provide a hand tool system with an optimized charging process, which is constructed inexpensively and simply. This object is achieved by a hand tool system according to claim 1.
- Advantageous embodiments, variants and developments of the invention can be found in the dependent claims.
- a hand tool system comprises a hand tool, a battery pack, a charger, at least one temperature sensor, at least one interface for the electrical and / or mechanical coupling of the charger to the battery pack to be charged and a control unit for controlling the charging process; the charger for the
- Charging the battery pack of the power tool is suitable and has a charging electronics.
- the hand tool system further comprises at least one heating means for heating the charger and / or the battery pack, and that the control unit is arranged for receiving at least one temperature signal of the temperature sensor.
- the temperature signal is a temperature of the charger and / or the battery pack and / or located in the battery pack rechargeable batteries again.
- the control unit is further configured to compare the transmitted temperature with a predefined threshold value and to heat the charger and / or the battery pack via the heating medium before starting the charging process when the temperature transmitted via the temperature signal is below the predefined threshold value.
- the charger is an inductive charger for contactless and / or wireless energy transmission. It is advantageous if the charger comprises at least one designed as a primary coil induction coil, which is intended, in at least one operating state by an applied electrical energy, in particular by an AC voltage, a
- the primary coil is intended to convert an electromagnetic alternating field into an alternating electrical current and / or vice versa. versa. It is advantageous if the alternating field has a frequency of 10 - 500 kHz, particularly preferably 100 - 150 kHz. Basically, different hand tool with different battery packs require different charging voltages, so that the primary and secondary coils must be adapted to the respective devices.
- control unit is configured to compare the transmitted temperature upon request of a loading operation by a user with the predefined threshold value.
- control unit is further configured to heat the heating means to a previously defined optimum charging temperature, wherein the optimum charging temperature is preferably greater than or equal to the predefined threshold value.
- the charging process is started as soon as the temperature of the battery cells is within a permissible charging temperature range.
- the waiting time to reuse of the battery pack can be significantly reduced by the warm-up.
- a removal of the rechargeable batteries from the vehicle is unnecessary to heat them otherwise.
- the control unit is set up to emit a signal upon reaching the previously defined optimum charging temperature and / or begins charging.
- the heating power of the heating element is between 0.2 watts and 20 watts, advantageously between 0.5 watts and 15 watts, more preferably between 2 watts and 10 watts, particularly preferably between 5 watts and 10 watts.
- the control unit is designed such that when the defined optimum charging temperature is reached, the charging process only begins when a charging capacity of the battery pack falls below a predetermined limit value.
- the control unit is configured to receive at least a first temperature signal and / or a second temperature signal via the interface. It has proven to be an advantage that the first temperature signal is suitable for transmitting the temperature of the battery pack and / or the temperature of the battery cells in the battery pack and that the second temperature signal is suitable for transmitting the temperature of the charger.
- At least one contact element of the interface comprises at least one temperature sensor.
- the heating means is designed as an electric heating element, and is preferably formed by a coil used in the charging electronics of the charger, particularly preferably by an energy-emitting primary coil.
- the primary winding is subjected to a substantially kind of DC voltage, whereby a power loss sets by which the entire hand tool system and thus the battery pack can be heated.
- This embodiment is particularly advantageous, since it firstly uses the existing primary coil for heating, and secondly always faces the primary coil of the secondary coil of the battery pack, whereby a directed and direct heat transfer can take place. Accordingly, cost savings and a faster warm-up phase are achieved through better coupling and better directed heat exchange.
- control unit is adapted to supply the coil used as a heating element via a relay with DC voltage and electrically connect to a local ground.
- the heating element is at least as long as the battery cells too cold or the charging system is too cold with energy.
- At least one heating element preferably two heating elements and / or a separate heating electronics are arranged within the battery pack, wherein the control unit or the heating electronics is adapted to the at least one heating element, preferably all used heating elements of the battery pack via the charger with power supply.
- Battery cells with a cell chemistry which provides a high power and / or energy density are preferably suitable for supplying power to the handheld power tool.
- the battery cells used can be lead-acid cells, NiCd battery cells, NiMH battery cells, but in particular lithium-ion cells.
- the battery cells can be formed by battery cells of different nominal voltages, for example rated voltages of 1.2 V, 1.5 V or advantageously approximately 3.6 V.
- the battery cells preferably have a cylindrical shape, whereby other forms that appear appropriate to the person skilled in the art are possible.
- the battery pack has a plurality of battery cells, for example at least two, three, four, five or ten. The battery cells are connected in parallel and / or in series.
- the cell holder can accommodate battery cells with different diameters and lengths, whereby the application of the cell holder or the cell carrier can be achieved in different battery packs.
- the battery pack is also realized as a fuel cell, capacitor or as otherwise, one skilled in the art seemingly energy storage or as a combination / increase of those.
- a “battery pack” is to be understood as meaning, in particular, an energy storage unit, in particular an inductive charging coupler Energy storage unit, understood to have at least one formed as a secondary coil induction coil.
- An inductive charging unit is to be understood as meaning a unit for charging the battery cell, which receives a charging current via induction and which comprises at least the inductive charging coil and, advantageously, inductive charging electronics.
- the inductive charging unit preferably also comprises at least one coil core for increasing an inductance of the at least one inductive charging coil.
- a coil core should in particular be understood to mean a device which is intended to bundle an electromagnetic field.
- the coil core is at least essentially formed by a magnetic material, in particular a ferromagnetic material, in particular a soft magnetic material.
- an inductive charging coil is to be understood as meaning, in particular, a coil having at least one winding of an electrically conductive material which is provided to receive, in at least one operating state, an electrical energy which is emitted during a charging process by an inductive charging coil of an inductive charging device and to supply via the charging electronics of a battery cell.
- the inductive charging coil is provided to convert an electromagnetic alternating field into an alternating electrical current and / or vice versa.
- the alternating field preferably has a frequency of 10 to 500 kHz, particularly preferably of 100 to 150 kHz.
- the inductive charging coil is formed as a wound coil, alternatively, the coil could be formed as a coil applied to a circuit board.
- a charging process is to be understood as a process in which an energy is inductively transmitted from the inductive charger 700 to the battery pack.
- FIG. 1 shows an example of a view of a hand tool with an inserted battery pack.
- Fig. 2 is a perspective view of a charger
- FIG. 3 is a perspective view of a battery pack
- FIG. 4 is a side view of a first embodiment of a battery pack that may be used in a hand tool system according to the present invention
- Fig. 5 is a side view of a second embodiment of a battery pack that may be used in a hand tool system according to the present invention.
- Fig. 6 is a plan view of a third embodiment of a battery pack which may be used in a hand tool system according to the present invention.
- FIG. 7 is a detail of a block diagram of a possible embodiment of a charging electronics of an inductive charger, which can be used in a hand tool system according to the present invention.
- FIG. 1 shows an electrical appliance embodied as a handheld power tool 300, which is configured by way of example as a cordless drill / driver. Accordingly, the power tool 300 in the illustrated embodiment for off-grid power supply is mechanically and electrically connected to a battery pack 100. It should be noted, however, that the present invention is not limited to cordless drill drivers, but rather may be applied to various handheld power tools 300.
- the portable power tool 300 has a gear 330 arranged in a housing 305 for transmitting a torque generated by a drive motor 335 to a drive shaft rotating about an axis x, to which a tool holder 320 for a tool, not shown, is attached, and a handle 315 , Within the housing 305, an electronics 370 is arranged, which is in electronic and / or mechanical contact with the drive motor 335 and / or the gear 330.
- the handle 315 serves as a support surface for a hand of an operator of the portable power tool 300 and typically has a longitudinal axis y, a front side 317, which points along an axis x in the direction of the tool holder 320, a rear side 316, and two side surfaces 318.
- a first operating element 310 for the power supply of the drive motor 335 is arranged, wherein the first operating element 310 protrudes out of the housing 305 for the user manually accessible, so that in a known manner by a pressure movement of the first operating element 310, a control and / or regulation of the drive motor preferably in dependence on the adjustment path of the first
- Operating element 310 can be made possible, and also the power supply for the drive motor 335 can be switched on and / or off.
- the handheld power tool 300 has a second operating element 312 in the form of a slide switch for setting the direction of rotation of the drive motor 335 of the handheld power tool 300.
- the second operating element 312 is displaceably arranged perpendicular to the axis of rotation x of the drive shaft, in particular the tool holder 320 of the handheld power tool 300, so that the second operating element 312 can be moved between a first position, a second position and a third position when actuated.
- the first and second positions respectively define a direction of rotation of the drive motor.
- the user of the portable power tool 300 can already recognize from the positions of the second operating element 312 in which working mode the portable power tool 300 operates.
- a third position for example, a center position, wherein in the third
- the operation of the first switching element 310 may be mechanically locked, wherein the second operating element 312 acts on the first switching element 310 in a locking manner when moving into a third position.
- the second operating element 312 as shown as
- Slide switch or alternatively be designed as a toggle switch.
- the first operating element 310 and the second operating element 312 are arranged along the axis of rotation x such that it is possible to operate both the first and the second operating element 310, 312 with the index finger or middle finger.
- the distance between the first operating element 310 and the second operating element 312 is selected such that one-handed operation of the handheld power tool 300 is possible.
- Both operating elements 310, 312 are furthermore arranged in a region below the axis of rotation x and protrude out of the housing 305.
- the battery pack 100 is attached to the handle 315 of the power tool 300 and locked by locking means.
- the locking means include, inter alia, a locking element and an actuating element 220. By actuation of the actuating means 220, the battery pack 100 can be released from the handle 315 of the portable power tool 300.
- the handheld power tool 300 has an interface 380.
- the battery pack 100 shown in FIG. 1 is designed as a sliding coupler, and has an interface 180 corresponding to the interface 380 of the portable power tool 300.
- Schiebeakkupack also a version as a swivel or Schwenkakkupack is possible, wherein the battery pack 100th On the opposite side of the pivot axis by latching, screwing, jamming or clamping on the housing 305 of the power tool 300 can be releasably locked. In this way, a possible drop of the battery pack from the housing 305 can be effectively counteracted.
- the battery pack 100 For releasably attaching the battery pack 100 to a hand tool 300 or to a charger 700, the battery pack 100 has an interface 180 for releasable mechanical and electrical connection to a corresponding interface 380 of the power tool 300 or a corresponding interface 780 of the charger 700.
- the battery pack 100 can be assigned to the handheld power tool 300 and / or the charger 700 via the interfaces 180, 380, 780.
- FIG. 2 shows a charging device 700.
- the charging device 700 is connected to the power supply via a mains cable 790 and has charging electronics, not shown, which is designed to control the charging process of a battery pack 100 shown in detail in FIGS. 3 to 6.
- the charging device 700 illustrated in FIG. 2 has a charging interface 780 in order to produce a mechanical and electrical connection between the charging device 700 and the battery pack 100 with a corresponding interface 180 of the battery pack 100 shown in FIG.
- the charging interface 780 has mating contact elements 740 that cooperate with corresponding contact elements 140 of the battery pack 100 in order to both transfer charge current and to exchange information between the charger 700 and the battery pack 100.
- each of the mating contact elements 740 is assigned a specific function which is fixed and can not be changed. This specific function can be, for example, the transmission of predefined information in the form of a signal transmitted by a corresponding contact element of the battery pack 100 or the contacting of a fixed electrical pole of the battery pack 100 during the charging process.
- FIG. 3 to 6 show various possible embodiments of a battery pack 100 that can be used in the hand tool system according to the present invention.
- the battery pack in each case has a housing 110 which, for example, as shown in FIG. 3, comprises a first housing component 120 and a second housing component 130.
- Within the housing 1 10 takes the battery pack 100 at least one, preferably and shown here a plurality of parallel or series-connected battery cells 400.
- the battery pack 100 is formed at least in the embodiment variant shown in Figure 3 as Schiebeakkupack.
- the embodiment of a battery pack 100 shown in FIG. 4 has ten battery cells 400, which are arranged in two layers with five battery cells 400 each. Furthermore, the battery pack has three heating elements 670 and a heating control 680. In each case one heating element 670 is arranged above and one below the battery cells 400 and a third heating element 670 is arranged horizontally between the two layers of battery cells 400.
- the embodiment of a 100 shown in FIG. 5 has only one layer with five battery cells 400, so that a heating element 670 is arranged above the battery cells 400 and a heating element 670 is arranged underneath the battery cells.
- FIG. 6 shows a further embodiment of a battery pack 100 shown in a plan view, wherein it can be seen that in each case a heating element 670 is arranged laterally from the battery cells 400.
- the control unit or the heating electronics 680 is set up to supply the heating elements 670 used via the charging device 700 and not via the battery cells 400.
- FIG. 7 shows a block diagram of an inductive charging device 700 that can be used in a hand-held power system according to the present invention for contactless and / or wireless energy transmission.
- the heating element 670 is designed in the form of a primary coil L1. The skilled artisan will take this circuit diagram directly that the capacitor C1, two switches S1 and S2, and the relay K1 cooperate such that, if necessary, the primary coil L1 is energized to retrieve the heating effect of the primary coil L1.
- the primary coil L1 is connected via the relay K1 with a DC voltage, as well as with the local ground.
- the capacitor C1 is bypassed.
- the S1 and S2 are switching elements of the half-bridge, for the present invention, no further explanation is required for the skilled person.
- the heating power of the heating element is in the range between 0.2 watts and 20 watts, advantageously between 0.5 watts and 15 watts, more preferably between 2 watts and 10 watts, particularly preferably between 5 watts and 10 watts.
- the control unit of the hand tool system is designed in such a way that when the defined optimum charging temperature is reached, the charging process only begins when a charging capacity of the battery pack 100 falls below a predetermined limit value
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016225730.7A DE102016225730A1 (de) | 2016-12-21 | 2016-12-21 | Handwerkzeugsystem |
PCT/EP2017/082017 WO2018114394A1 (de) | 2016-12-21 | 2017-12-08 | Handwerkzeugsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3560063A1 true EP3560063A1 (de) | 2019-10-30 |
Family
ID=60857035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17822192.5A Withdrawn EP3560063A1 (de) | 2016-12-21 | 2017-12-08 | Handwerkzeugsystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190326771A1 (de) |
EP (1) | EP3560063A1 (de) |
CN (1) | CN110168851A (de) |
DE (1) | DE102016225730A1 (de) |
WO (1) | WO2018114394A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10742064B2 (en) * | 2015-09-15 | 2020-08-11 | Lithium Power, Inc. | Solar battery system for low temperature operation |
DE102018211474A1 (de) * | 2018-07-11 | 2020-01-16 | Robert Bosch Gmbh | Daten- und/oder Kommandovorrichtung |
DE102019220202A1 (de) * | 2019-12-19 | 2021-06-24 | Robert Bosch Gmbh | Akkuvorrichtung für einen Akkupack einer Handwerkzeugmaschine |
DE102020210377A1 (de) | 2020-08-14 | 2022-02-17 | Robert Bosch Gesellschaft mit beschränkter Haftung | Wechselakkupack und/oder elektrischer Verbraucher mit einer elektromechanischen Schnittstelle zur Energieversorgung |
DE102021209072A1 (de) | 2021-08-18 | 2023-02-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Akkusystem, Akkupack, Akkupackladegerät und Verfahren zu einem Betrieb des Akkusystems |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006288150A (ja) * | 2005-04-04 | 2006-10-19 | Hitachi Koki Co Ltd | リチウム電池用充電装置 |
EP1780865B1 (de) * | 2005-10-31 | 2017-02-22 | Black & Decker, Inc. | Thermisches Managementsystem für ein Batteriepack |
DE102009029093A1 (de) * | 2009-09-02 | 2011-03-03 | Robert Bosch Gmbh | Verfahren zum Erwärmen eines Akkumulators, Ladegerät und Zusatzelement |
DE102011086873A1 (de) * | 2011-11-22 | 2013-05-23 | Robert Bosch Gmbh | System aus einem Handwerkzeugakku und einer Handwerkzeugtransportvorrichtung |
DE102012206623A1 (de) * | 2012-04-23 | 2013-10-24 | Robert Bosch Gmbh | Handwerkzeugakku mit einer Temperiereinheit |
US10821591B2 (en) * | 2012-11-13 | 2020-11-03 | Milwaukee Electric Tool Corporation | High-power cordless, hand-held power tool including a brushless direct current motor |
DE102013226220A1 (de) * | 2012-12-21 | 2014-06-26 | Robert Bosch Gmbh | Induktionshandwerkzeugakkuvorrichtung |
CN105978113A (zh) * | 2016-07-28 | 2016-09-28 | 维沃移动通信有限公司 | 一种充电电路、其控制方法及移动终端 |
-
2016
- 2016-12-21 DE DE102016225730.7A patent/DE102016225730A1/de not_active Withdrawn
-
2017
- 2017-12-08 CN CN201780079705.9A patent/CN110168851A/zh active Pending
- 2017-12-08 US US16/470,907 patent/US20190326771A1/en not_active Abandoned
- 2017-12-08 EP EP17822192.5A patent/EP3560063A1/de not_active Withdrawn
- 2017-12-08 WO PCT/EP2017/082017 patent/WO2018114394A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE102016225730A1 (de) | 2018-06-21 |
CN110168851A (zh) | 2019-08-23 |
US20190326771A1 (en) | 2019-10-24 |
WO2018114394A1 (de) | 2018-06-28 |
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