EP1266725A1 - Elektrowerkzeug mit wiederaufladbarem Energiespeicher - Google Patents
Elektrowerkzeug mit wiederaufladbarem Energiespeicher Download PDFInfo
- Publication number
- EP1266725A1 EP1266725A1 EP01114544A EP01114544A EP1266725A1 EP 1266725 A1 EP1266725 A1 EP 1266725A1 EP 01114544 A EP01114544 A EP 01114544A EP 01114544 A EP01114544 A EP 01114544A EP 1266725 A1 EP1266725 A1 EP 1266725A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capacitors
- energy store
- tool according
- rechargeable
- charged
- 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- Withdrawn
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Classifications
-
- 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
- B25F5/02—Construction of casings, bodies or handles
Definitions
- the invention relates to an electrically operated implement, especially a power tool like a drill, a screwdriver or the like. According to the preamble of the claim 1.
- Such tools also known as cordless screwdrivers, have an electric drive motor for driving a Tool holder in which the desired work tool is inserted.
- the drive motor is via a switch connectable to a rechargeable energy storage device, the the implement is held interchangeably.
- the energy storage - usually a battery pack - is used regularly by the working device charged separately in a charging station, which is usually the case Periods of 10 to 12 hours are necessary.
- Fast charging capability Energy stores have reduced charging times of 15 Minutes to 1 hour.
- Usual battery packs especially NiCd cells, have a permanent one Self-discharge, so that the capacity with increasing Storage time decreases. In the hobby area, this usually has the consequence that whenever the tool is to be used, the user must determine that the energy storage is discharged and must first be loaded for the work to be performed. As a result, there is usually no need to use the power tool A period of 15 minutes to 1 hour is possible.
- the invention has for its object an electrically operated Train the implement in such a way that even when empty Energy storage within the shortest possible time using the Working tool is possible.
- the main idea of the invention is to provide high performance Capacitors as quickly rechargeable energy storage, e.g. as To use the battery pack. Because capacitors with high in a short time Charging currents can be charged and are considerable after just a few seconds Have stored amount of energy with the working device work is started at short notice.
- the Capacitor performance is sufficient to perform several screwing operations. For example about five to ten screwing operations with the Energy storage from capacitors according to the invention properly be carried out before reloading is necessary. There this reloading is in the seconds range, is in the hobby area the interruption of work for a possible reloading readily acceptable.
- the hobby craftsman is given the opportunity, even after long rest phase of the power tool and the associated Short-term discharge of the cells of a battery pack Take up work without long charging phases of the battery pack must accept.
- capacitors are connected in parallel to each other, high peak currents possible, while continuous currents of 20 to 30 A can be achieved.
- a series connection of capacitors connected in parallel with a nominal voltage of The output voltage can be 2.3 to 2.5 V e.g. to 12 V or 24 V can be increased.
- the energy storage from capacitors is advantageous against an energy store made of rechargeable cells such as NiCd batteries, Li batteries, NiMH batteries can be used.
- the energy store from rechargeable cells and the energy storage from capacitors has the same geometry a connection, e.g. a contacting insert shoe.
- High-performance capacitors in addition to conventional battery cells in one Arrange housing and electrically connect such that first the capacitors and then the battery cells become.
- the capacitors can also be used during a break are charged via the battery cells.
- the energy storage devices made of rechargeable batteries are advantageous Cells and the energy storage from capacitors alternately to charge in a same charger. It can also be two Charging slots are provided so that during charging and Charging the energy storage from capacitors permanently Energy storage is charged from rechargeable cells. On this way, the charging period of the usually used Energy storage from rechargeable cells with the energy storage from capacitors are bridged.
- the capacitors In order to achieve a high power density, the capacitors with up to 30%, preferably with 20% above their nominal voltage charged. The stored amount of charge is increased.
- the electrically operated implement shown in Fig. 1 is a cordless screwdriver 1. It has an essentially pistol-like Basic shape with a handle 3 and one across Handle 3 lying housing 2, in which an electric drive motor 7 is arranged.
- the electric drive motor 7 expediently drives a tool holder 4 via a gear, the bit holder for tools in the embodiment shown 8 is.
- a switch 5 is provided in the housing of the handle 3, via which the electric motor 7 is releasably attached to the handle Energy storage 6 is to be connected.
- the energy store 6 consists of a housing that on its side facing the handle 3, a plug-in shoe 9 has in the free end 10 of the handle form-fitting is held in place. In the locking position shown in Fig. 1 is the energy storage 6 in the insert shoe 9 and arranged in the free end 10 of the handle 3 electrical contacts and connected to the drive motor 7 via the switch 5.
- Fig. 1 there are a large number in the housing of the energy store 6 of rechargeable cells 11 arranged as dashed lines shown. These individual cells 11 are electrically interconnected connected to a battery pack of the desired voltage and the desired performance.
- the cells 11 can stand upright in the housing of the energy store 6 be arranged, with its longitudinal axis 12 then approximately to Longitudinal axis of the handle 3 is aligned. Expediently also be a horizontal arrangement of the capacitors.
- the rechargeable cells can be NiCd cells, Li cells or be NiMH cells.
- Fig. 2 is in place of the energy store 6 in Fig. 1 or alternately for this an energy storage device 20 is provided, the housing 21 of which is the same Size as the housing of the energy storage 6 in Fig. 1.
- the housing 21 on its Handle 3 facing flat side on a plug-in shoe 9, in the free end 10 of the handle 3 while closing electrical Contacts can be snapped into place.
- the housing 21 the energy store 20 is thus captively fixed, but detachable held on the handle 3 of the implement 1.
- a capacitor can have an internal voltage from e.g. 2.3 V to 2.5 V can be charged, with a single capacitor has a capacitance of more than 50 farads having. 100 Farad is an advantageous size.
- a capacitor can have an internal voltage from e.g. 2.3 V to 2.5 V can be charged, with a single capacitor has a capacitance of more than 50 farads having. 100 Farad is an advantageous size.
- To achieve a continuous current capability of 20 to 30 A and preferably a peak load of up to 80 A are several in particular identical capacitors connected in parallel.
- the Capacitors 22 with a capacitance of more than 50 F are so dimensioned that they the electrical energy requirement of the drive motor 7 cover for several screw cycles.
- the design is made so that about five screwing cycles, preferably up to ten screw cycles with screws 5x40 mm in Softwood are possible. It is also used for operation a battery light possible, operating times of 5 minutes and more are reachable.
- the energy store 20 in less than 1 minute, preferably rechargeable within 10 to 30 seconds. This can be done in an adapted charger happen, expediently the Energy storage 6 from rechargeable cells 11 and Energy storage 20 from capacitors 22 preferably alternately can be charged in the same charger. It can be expedient to provide a charger with two charging slots, which are each electrically connected to the energy store to be charged 6 and 20 are adapted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
- Fig. 1
- in perspektivischer Ansicht ein elektrisch betriebenes Arbeitsgerät mit einem Energiespeicher aus wiederaufladbaren Zellen,
- Fig. 2
- eine perspektivische Ansicht eines Energiespeichers aus Kondensatoren.
Claims (10)
- Elektrisch betriebenes Arbeitsgerät, insbesondere Elektrowerkzeug wie Bohrmaschine, Schrauber oder dgl., mit einem elektrischen Antriebsmotor (7) zum Antrieb eines Werkzeughalters (4), wobei der Antriebsmotor (7) über einen Schalter (5) mit einem wiederaufladbaren Energiespeicher (6, 20) verbindbar ist, der an dem Arbeitsgerät (1) auswechselbar gehalten ist,
dadurch gekennzeichnet, daß der Energiespeicher (20) im wesentlichen ausschließlich aus miteinander gekoppelten Kondensatoren (22) besteht. - Arbeitsgerät nach Anspruch 1,
dadurch gekennzeichnet, daß die vorzugsweise baugleich ausgeführten Kondensatoren (22) zueinander in Reihe und/oder parallel geschaltet sind. - Arbeitsgerät nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Kondensatoren eine Kapazität von mehr als 50 F haben. - Arbeitsgerät nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß der Energiespeicher (20) aus Kondensatoren (22) in einem Bereich von etwa 20 bis 30 A dauerlastfähig ist und eine Spitzenlastfähigkeit von 80 A aufweist. - Arbeitsgerät nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß der Energiespeicher (20) aus Kondensatoren (22) in weniger als 1 Minute, vorzugsweise innerhalb von 10 bis 30 Sekunden aufladbar ist. - Arbeitsgerät nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der Energiespeicher (20) aus Kondensatoren (22) alternativ gegen einen Energiespeicher (6) aus wiederaufladbaren Zellen wie NiCd-Akkus, Li-Akkus, NiMH-Akkus oder dgl. austauschbar ist. - Arbeitsgerät nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der Energiespeicher (20) aus Kondensatoren (22) parallel zu einem Energiespeicher (6) aus wiederaufladbaren Zellen geschaltet ist. - Arbeitsgerät nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß der Energiespeicher (6) aus wiederaufladbaren Zellen (11) und der Energiespeicher (20) aus Kondensatoren (22) etwa gleiche Anschlußgeometrie des Einsteckschuhs haben. - Arbeitsgerät nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß der Energiespeicher (6) aus wiederaufladbaren Zellen (11) und der Energiespeicher (20) aus Kondensatoren (22) vorzugsweise wechselweise in einem gleichen Aufladegerät zu laden sind. - Arbeitsgerät nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß die Kondensatoren mit bis zu 30% über ihre Nennspannung, vorzugsweise mit etwa 20% über ihre Nennspannung aufladbar sind.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01114544A EP1266725A1 (de) | 2001-06-16 | 2001-06-16 | Elektrowerkzeug mit wiederaufladbarem Energiespeicher |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01114544A EP1266725A1 (de) | 2001-06-16 | 2001-06-16 | Elektrowerkzeug mit wiederaufladbarem Energiespeicher |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1266725A1 true EP1266725A1 (de) | 2002-12-18 |
Family
ID=8177735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01114544A Withdrawn EP1266725A1 (de) | 2001-06-16 | 2001-06-16 | Elektrowerkzeug mit wiederaufladbarem Energiespeicher |
Country Status (1)
Country | Link |
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EP (1) | EP1266725A1 (de) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005039829A1 (de) * | 2003-09-29 | 2005-05-06 | Robert Bosch Gmbh | Akkuschrauber |
WO2005039833A1 (de) * | 2003-09-29 | 2005-05-06 | Robert Bosch Gmbh | Akkuschrauber |
GB2420032A (en) * | 2003-11-19 | 2006-05-10 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
WO2006081894A1 (de) * | 2005-02-07 | 2006-08-10 | Robert Bosch Gmbh | Elektrische handwerkzeugmaschine |
GB2434704A (en) * | 2002-11-22 | 2007-08-01 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
US7253585B2 (en) | 2002-11-22 | 2007-08-07 | Milwaukee Electric Tool Corporation | Battery pack |
US7714538B2 (en) | 2002-11-22 | 2010-05-11 | Milwaukee Electric Tool Corporation | Battery pack |
US8310177B2 (en) | 2008-04-14 | 2012-11-13 | Stanley Black & Decker, Inc. | Battery management system for a cordless tool |
US9406915B2 (en) | 2014-05-18 | 2016-08-02 | Black & Decker, Inc. | Power tool system |
CN107443321A (zh) * | 2016-05-13 | 2017-12-08 | 株式会社牧田 | 电动工具 |
US9893384B2 (en) | 2014-05-18 | 2018-02-13 | Black & Decker Inc. | Transport system for convertible battery pack |
US11196080B2 (en) | 2002-11-22 | 2021-12-07 | Milwaukee Electric Tool Corporation | Method and system for battery protection |
US11211664B2 (en) | 2016-12-23 | 2021-12-28 | Black & Decker Inc. | Cordless power tool system |
US11469608B2 (en) | 2002-11-22 | 2022-10-11 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
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WO2000041253A1 (en) * | 1999-01-08 | 2000-07-13 | Danionics A/S | Arrangement of electrochemical cells and circuit board |
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-
2001
- 2001-06-16 EP EP01114544A patent/EP1266725A1/de not_active Withdrawn
Patent Citations (3)
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US5677078A (en) * | 1995-09-27 | 1997-10-14 | Bolder Technologies Corp. | Method and apparatus for assembling electrochemical cell using elastomeric sleeve |
WO2000041253A1 (en) * | 1999-01-08 | 2000-07-13 | Danionics A/S | Arrangement of electrochemical cells and circuit board |
WO2001005559A2 (en) * | 1999-07-16 | 2001-01-25 | Gass Stephen F | Improved power tools |
Cited By (68)
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US10566810B2 (en) | 2002-11-22 | 2020-02-18 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
GB2434705B (en) * | 2002-11-22 | 2007-09-12 | Milwaukee Electric Tool Corp | Method and System for Battery Charging |
US11837694B2 (en) | 2002-11-22 | 2023-12-05 | Milwaukee Electric Tool Corporation | Lithium-based battery pack |
US11682910B2 (en) | 2002-11-22 | 2023-06-20 | Milwaukee Electric Tool Corporation | Method of operating a lithium-based battery pack for a hand held power tool |
US11469608B2 (en) | 2002-11-22 | 2022-10-11 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
US11196080B2 (en) | 2002-11-22 | 2021-12-07 | Milwaukee Electric Tool Corporation | Method and system for battery protection |
US10998586B2 (en) | 2002-11-22 | 2021-05-04 | Milwaukee Electric Tool Corporation | Lithium-based battery pack including a balancing circuit |
US10886762B2 (en) | 2002-11-22 | 2021-01-05 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
US10431857B2 (en) | 2002-11-22 | 2019-10-01 | Milwaukee Electric Tool Corporation | Lithium-based battery pack |
GB2434704A (en) * | 2002-11-22 | 2007-08-01 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
GB2434705A (en) * | 2002-11-22 | 2007-08-01 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
US7253585B2 (en) | 2002-11-22 | 2007-08-07 | Milwaukee Electric Tool Corporation | Battery pack |
GB2434704B (en) * | 2002-11-22 | 2007-09-12 | Milwaukee Electric Tool Corp | Method and System for Battery Charging |
US10218194B2 (en) | 2002-11-22 | 2019-02-26 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
US10141614B2 (en) | 2002-11-22 | 2018-11-27 | Milwaukee Electric Tool Corporation | Battery pack |
US9379569B2 (en) | 2002-11-22 | 2016-06-28 | Milwaukee Electric Tool Corporation | Lithium-battery pack for a hand held power tool |
US7554290B2 (en) | 2002-11-22 | 2009-06-30 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand-held power tool |
US7557535B2 (en) | 2002-11-22 | 2009-07-07 | Milwaukee Electric Tool Corporation | Lithium-based battery for a hand held power tool |
US7714538B2 (en) | 2002-11-22 | 2010-05-11 | Milwaukee Electric Tool Corporation | Battery pack |
US7944173B2 (en) | 2002-11-22 | 2011-05-17 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a high current draw, hand held power tool |
US9793583B2 (en) | 2002-11-22 | 2017-10-17 | Milwaukee Electric Tool Corporation | Lithium-based battery pack |
US7999510B2 (en) | 2002-11-22 | 2011-08-16 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a high current draw, hand held power tool |
US8154249B2 (en) | 2002-11-22 | 2012-04-10 | Milwaukee Electric Tool Corporation | Battery pack |
US8207702B2 (en) | 2002-11-22 | 2012-06-26 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
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US8269459B2 (en) | 2002-11-22 | 2012-09-18 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a high current draw, hand held power tool |
US8450971B2 (en) | 2002-11-22 | 2013-05-28 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
US8487585B2 (en) | 2002-11-22 | 2013-07-16 | Milwaukee Electric Tool Corporation | Battery pack |
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US9048515B2 (en) | 2002-11-22 | 2015-06-02 | Milwaukee Electric Tool Corporation | Battery pack |
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US9368842B2 (en) | 2002-11-22 | 2016-06-14 | Milwaukee Electric Tool Corporation | Battery pack |
US7456608B2 (en) | 2003-09-29 | 2008-11-25 | Robert Bosch Gmbh | Battery-driven screwdriver |
WO2005039833A1 (de) * | 2003-09-29 | 2005-05-06 | Robert Bosch Gmbh | Akkuschrauber |
US7134364B2 (en) | 2003-09-29 | 2006-11-14 | Robert Bosch Gmbh | Battery-driven screwdriver |
WO2005039829A1 (de) * | 2003-09-29 | 2005-05-06 | Robert Bosch Gmbh | Akkuschrauber |
CN1860000B (zh) * | 2003-09-29 | 2011-08-03 | 罗伯特·博世有限公司 | 可充电式旋拧/钻孔工具 |
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GB2420032A (en) * | 2003-11-19 | 2006-05-10 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
GB2420029A (en) * | 2003-11-19 | 2006-05-10 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
JP2008086200A (ja) * | 2003-11-19 | 2008-04-10 | Milwaukee Electric Tool Corp | 電池を充電する方法およびシステム |
GB2420028A (en) * | 2003-11-19 | 2006-05-10 | Milwaukee Electric Tool Corp | Battery pack for a cordless power tool |
GB2420030A (en) * | 2003-11-19 | 2006-05-10 | Milwaukee Electric Tool Corp | Battey pack for a cordless power tool |
WO2006081894A1 (de) * | 2005-02-07 | 2006-08-10 | Robert Bosch Gmbh | Elektrische handwerkzeugmaschine |
US8310177B2 (en) | 2008-04-14 | 2012-11-13 | Stanley Black & Decker, Inc. | Battery management system for a cordless tool |
USRE45897E1 (en) | 2008-04-14 | 2016-02-23 | Stanley Black & Decker, Inc. | Battery management system for a cordless tool |
US10541639B2 (en) | 2014-05-18 | 2020-01-21 | Black & Decker, Inc. | Cordless power tool system |
US10972041B2 (en) | 2014-05-18 | 2021-04-06 | Black & Decker, Inc. | Battery pack and battery charger system |
US10333454B2 (en) | 2014-05-18 | 2019-06-25 | Black & Decker Inc. | Power tool having a universal motor capable of being powered by AC or DC power supply |
US10291173B2 (en) | 2014-05-18 | 2019-05-14 | Black & Decker Inc. | Power tool powered by power supplies having different rated voltages |
US10250178B2 (en) | 2014-05-18 | 2019-04-02 | Black & Decker Inc. | Cordless power tool system |
US9583793B2 (en) | 2014-05-18 | 2017-02-28 | Black & Decker Inc. | Power tool system |
US9871484B2 (en) | 2014-05-18 | 2018-01-16 | Black & Decker Inc. | Cordless power tool system |
US10608574B2 (en) | 2014-05-18 | 2020-03-31 | Black And Decker, Inc. | Convertible battery pack |
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US10840559B2 (en) | 2014-05-18 | 2020-11-17 | Black & Decker Inc. | Transport system for convertible battery pack |
US10236819B2 (en) | 2014-05-18 | 2019-03-19 | Black & Decker Inc. | Multi-voltage battery pack |
US10333453B2 (en) | 2014-05-18 | 2019-06-25 | Black & Decker Inc. | Power tool having a universal motor capable of being powered by AC or DC power supply |
US9406915B2 (en) | 2014-05-18 | 2016-08-02 | Black & Decker, Inc. | Power tool system |
US11005412B2 (en) | 2014-05-18 | 2021-05-11 | Black & Decker Inc. | Battery pack and battery charger system |
US11005411B2 (en) | 2014-05-18 | 2021-05-11 | Black & Decker Inc. | Battery pack and battery charger system |
US11152886B2 (en) | 2014-05-18 | 2021-10-19 | Black & Decker Inc. | Battery pack and battery charger system |
US10177701B2 (en) | 2014-05-18 | 2019-01-08 | Black & Decker, Inc. | Cordless power tool system |
US9893384B2 (en) | 2014-05-18 | 2018-02-13 | Black & Decker Inc. | Transport system for convertible battery pack |
US10361651B2 (en) | 2014-05-18 | 2019-07-23 | Black & Decker Inc. | Cordless power tool system |
CN107443321A (zh) * | 2016-05-13 | 2017-12-08 | 株式会社牧田 | 电动工具 |
CN107443321B (zh) * | 2016-05-13 | 2022-01-04 | 株式会社牧田 | 电动工具 |
US11211664B2 (en) | 2016-12-23 | 2021-12-28 | Black & Decker Inc. | Cordless power tool system |
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