SE543362C2 - A method of driving a motor of a power tool, a power supply system and a power tool - Google Patents
A method of driving a motor of a power tool, a power supply system and a power toolInfo
- Publication number
- SE543362C2 SE543362C2 SE1551318A SE1551318A SE543362C2 SE 543362 C2 SE543362 C2 SE 543362C2 SE 1551318 A SE1551318 A SE 1551318A SE 1551318 A SE1551318 A SE 1551318A SE 543362 C2 SE543362 C2 SE 543362C2
- Authority
- SE
- Sweden
- Prior art keywords
- power
- power supply
- motor
- unit
- super capacitor
- Prior art date
Links
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
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
Abstract
The invention relates to a method of driving a motor (102, 202) of a power tool (101 ) comprising providing electrical power from a power supply (104) to drive the motor (102, 202). The power supply (104) is configured to provide power up to a power threshold, and above the power threshold additional electrical power is provided from a super capacitor unit (101 ) to drive the motor (102, 202). The super capacitor unit (101 ) is charged by means of the power supply (104). The invention further relates to a power supply system (103) for a motor (102, 202) of a power tool (101), and to a power tool (101).
Description
A METHOD OF DRIVING A MOTOR OF A POWER TOOL, A POWER SUPPLY SYSTEMAND A POWER TOOL TECHNICAL FIELD
[0001] supply system for a motor of a power tool and a power tool comprising a motor.
The invention relates to a method of driving a motor of a power tool, a power BACKGROUND
[0002] in the form of battery based power supply or electrical mains connected power supply Power tools are powered by various electrical power supply systems, typically systems.
[0003] require charging at regular intervals.
Battery powered power tools are portable and flexible to use, but batteries
[0004] advantage of being able to provide high power through an electrical power cable. However in Electrical mains connected power supply systems on the other hand has the order to be able to provide high power, the electrical load of the power supply system to themains power is typically large.
SUMMARY OF THE INVENTION
[0005] battery based power supplies and conventional electrical mains connected power supplies. lt is an object of the present invention to reduce some of the drawbacks of
[0006] comprising the steps of providing electrical power from a power supply to drive the motor, Thus the invention relates to a method of driving a motor of a power tool wherein the power supply is configured to continuously provide power up to a powerthreshold. Above the power threshold additional electrical power is provided from a supercapacitor unit to drive the motor. The power supply is further used to charging the super capacitor unit.
[0007] reduced. The power supply may be simpler, cheaper and smaller. Despite this, the power Thereby the electrical load of the power supply on the electrical mains may be tool may still be able to meet demands on high peak power at intermittent operation, such asduring start up and e.g. final steps of tightening fastening elements. Typically high power is only needed during short intervals of operation of the power tool.
[0008] during periods when power above the power threshold is needed, or to only provide the The super capacitor unit may be arranged to provide all the energy needed additional power needed above the power supplied by the power supply. ln correspondencethe power supply may be arranged to continuously provide energy to the motor, or to onlyprovide energy to the motor when the needed power is below the power threshold. ln any case the power supply is configured to only provide power up to a power threshold.
[0009] power tool in the super capacitor unit when braking the power tool. Thus energy may be The method may comprise absorbing energy generated by the motor of the recovered in order to increase energy efficiency.
[0010] power from the power supply when the power provided to the motor is below the power The method may comprise charging the super capacitor unit by means of the threshold. Thereby power supplied by the power supply may be used to charge the super capacitor unit during periods of low power consumption of the device.
[0011]motor is driven by the power supply. Thereby, part of the power supplied by the power supply The method may comprise charging the super capacitor unit also while the may be used to charge the super capacitor unit during periods of low power consumption of the motor in the power tool
[0012] power cable. ln one alternative the power from the super capacitor unit to the motor may also The power from the power supply to the motor may be provided through a be provided through the power cable. Thereby the complete power consumption of the powertool is provided to the tool through the power cable. The power cable must thus bedimensioned to be able to supply peak power to the power tool. An advantage is that the size and/or the weight of the power tool itself may be reduced.
[0013] level of electrical power needs to be provided through the power cable and the power cable The super capacitor unit may be comprised in the power tool. Thereby a lower only needs to be dimensioned for that lower level of power.
[0014] regulating the current, or regulating the power, up to a voltage threshold. Current may be The method may comprise providing power from the power supply while regulated as e.g. constant current, and power may be regulated as e.g. constant power.Thereby the energy provided to the super capacitor unit may be controlled during charging of the capacitor.
[0015] constant voltage at or over the voltage threshold. Thereby energy may be supplied to the The method may comprise regulating power from the power supply towards power tool at a voltage suitable for powering the power tool.
[0016] super capacitor unit to the power supply. The electrical current may be limited by a diode or The method may comprise limiting electrical current in a direction from the circuit with similar functionality. Thereby electrical current may be limited from running in thedirection from the super capacitor unit to the power supply e.g. in the event of power loss orin the event of accidental failure of connectors or cables to reduce the risk of injury or the risk of damage of the power supply etc.
[0017] The method may comprising performing an emergency stop
[0018] that the super capacitor unit is charged or indicating that the super capacitor is charging.
The method may comprise indicating to an operator or a supervising system Thereby an operator of the power tool may be informed of the status of the super capacitor unit and thus the operability of the power tool.
[0019] power supply and to indicate to the power tool that it is connected to a super capacitor unit.
The method may comprise communicating between the power tool and the
[0020] tool, comprising The invention further relates to a power supply system for a motor of a power an electrical power supply unit connectable to a distant power source, a regulating unitconnected to the electrical power supply unit and configured to provide electrical power todrive the motor, wherein the regulating unit is configured to provide power from the electricalpower supply unit up to a power threshold, a super capacitor unit configured to provide additional electrical power above the powerthreshold, to the motor, wherein the super capacitor unit is connected to the electrical power supply unit for charging.
[0021] may be reduced. The power supply may be simpler, cheaper and smaller. Despite this, the Thereby the electrical load of the power supply system on the electrical mains power tool may still be able to meet demands on high peak power such as during start up and e.g. final steps of tightening fastening elements.
[0022] current), or regulating the power (e.g. constant power), up to a voltage threshold, and to The regulating unit may be configured to regulating the current (e.g. constant regulate power from the power supply unit towards constant voltage at or over the voltage threshold. Thereby the energy provided to the super capacitor unit may be controlled duringcharging of the capacitor and energy may be supplied to the power tool at a voltage suitablefor powering the power tool. After a peak power event, when energy has been provided fromthe super capacitor unit to the motor, the voltage over the super capacitor unit may havefallen under the voltage threshold, thus entering into charging mode again regulating thecurrent (e.g. constant current), or regulating the power (e.g. constant power). Regulating the power during charging may reduce the time needed for charging.
[0023] limit current in the direction from the power tool to the power supply. The current limiting The power supply system may comprise a current limiting device configured to device may be a unidirectional electrical component, e.g. a diode. Thus e.g. in the event ofpower loss or accidental failure of connectors or cables the risk of injury or the risk of damage of the power supply etc may be reduced.
[0024] system may be configured to provide power from the distant power source to the motor The power supply system may comprise a power cable and the power supply through the power cable.
[0025] 100 W. Thereby the power supply unit may be small and produced at reduced cost.
The power threshold may be less than 400 W, less than 200 W, or less than
[0026] a motor, The invention further relates to a power tool comprising a super capacitor unit, a regulating unit, and an electrical connection for cable connection to a distant power source, wherein the regulating unit is configured to regulate incoming power from the distant powersource to not exceed a power threshold, and wherein the super capacitor unit is configured to provide additional power to the motor above said power threshold.
[0027] able of providing power up to the power threshold, while being able to meet demands on Thus a power tool is provided which may be connected to a power source being peak power during limited periods of operation of the power tool.
[0028] source via the electrical connection.
The super capacitor unit may be configured to be charged by the distant power
[0029] configured to be charged by the motor at instances when the motor is used as generator.
The motor may be used as a generator and the super capacitor unit may be Thus energy generated when braking may be reused in the system. A super capacitor hasthe additional advantage of being able to handle and absorb higher peak currents than e.g. batteries.
[0030] current), or regulating the power (e.g. constant power), up to a voltage threshold, and to The regulating unit may be configured to regulating the current (e.g. constant regulate power from the power supply unit towards constant voltage at or over the voltagethreshold. Thereby the power tool may control energy provided to the super capacitor unitduring charging of the capacitor and supply energy to the motor of the power tool at a voltagesuitable for powering the motor. The power tool may further comprise a motor controller that serves to govern the motor.
[0031] current in the direction from the power tool to the power supply. The current limiting device The power tool may comprise a current limiting device configured to limit may be a unidirectional electrical component, e.g. a diode. Thus e.g. in the event of powerloss or accidental failure of connectors or cables the risk of injury or the risk of damage of the power supply etc may be reduced.
[0032] capacitor unit configured to be closed when the voltage over the super capacitor unit The power tool may comprise a switch between the motor and the super exceeds a voltage threshold suitable for powering the motor of the power tool.
[0033] connected in series and/or parallel. The super capacitor unit may have a capacitance of at The super capacitor unit may comprise one or more super capacitors, least 0.1 F, preferably at least 1 F, more preferably at least 10 F. The super capacitor unit may be configured to provide a current of up to at least 5 A, preferably up to at least 10 A.BRIEF DESCRIPTION OF DRAWINGS
[0034]the appended drawings, in which: Various embodiments of the invention will now be described with reference to Fig. 1 shows a first power tool system, and Fig. 2 shows a second power tool system.
DETAILED DESCRIPTION ln the following, a detailed description of various embodiments of a method of driving a motorof a power tool, a power supply system for a motor of a power tool and a power tool isdisclosed.
[0035] motor 102 and a power supply system 103 for powering the motor of the power tool. ln Fig. 1 a power tool system 100 is shown comprising a power tool 101 with a
[0036] station, but screwdrivers, drilling tools, cutting tools, grinding tools, routing or sanding tools The power tool may e.g. be a nutrunner for tightening nuts in an assembly are also suitable. The power tool may be a portable, hand held tool, or a fixture power tool.The power tool may be a battery powered power tool, where the battery pack is replaced with a power supply system as disclosed herein, connected to electrical mains.
[0037] connected to electrical mains 105. The electrical power supply unit may be a smaller unit, The power supply system 103 comprises an electrical power supply unit 104 e.g. capable of providing an electrical power of about 100 W, such as 72 W, and a voltagelevel of e.g. 18 V. ln the embodiment shown in Fig. 1 the power supply unit provides electrical power to the power tool through a power cable 106, which may be a thinner andmore flexible power cable than typically used to power industrial power tools, since it only has to supply a relatively low power.
[0038] conventional removable battery pack of a battery powered tool. The unit 107 is still a part of The power tool comprises a unit 107, which e.g. may take the form of a the power supply system 103.
[0039] 107. The current limiting device is in the form of a unidirectional diode configured to limit A current limiting device 108 is provided on the power supply side of the unit current in the direction from the power tool to the power supply.
[0040] The electrical regulator may be a current regulator (e.g. constant current), voltage regulator Connected to the current limiting device, an electrical regulator 109 is provided. (e.g. constant voltage) or electrical power regulator (e.g. constant power). ln oneembodiment the electrical regulator is configured to regulate on current (e.g. constantcurrent) or on power (e.g. constant power) under a voltage threshold. When reaching thevoltage threshold, the electrical regulator is configured to regulate towards constant voltage to provide this voltage to the power tool.
[0041] may comprise one or more super capacitor components, connected in series and/or parallel.
The super capacitor unit is comprised in the unit 107. A super capacitor unit The super capacitor unit has a capacitance of at least 0.1 F and is able to provide a currentof at least 5 A. These features are typically not available in conventional electrolyticcapacitors. As one example a super capacitor unit having a capacitance of 12.5 F may be used to power a power tool with 18 V. Super capacitor units are also known as double-layer capacitors or ultracapacitors. lnstead of using a conventional dielectric, supercapacitors useone or more of two mechanisms to store electrical energy: double-layer capacitance and pseudocapacitance.
[0042] switch 111 may be provided. The switch may be configured to close the electrical connection Between the super capacitor unit 110 and the motor 103 of the power tool a only when the voltage is above a voltage threshold, e.g. 12 V for a power tool operating at 18V, and to open the electrical connection when the voltage is below this voltage threshold.Thus the motor of the power tool may be operatable only when the power supply system supplies a voltage sufficient to properly power the motor of the tool.
[0043] braking of the power tool. When compared to batteries, super capacitors may be used to The super capacitor unit may also be used to absorb energy generated during absorb higher peak currents generated during quick braking.
[0044] with reference to Fig. 1. As a first step the super capacitor unit 110 will be charged. lnitially A method of driving the motor 102 of the power tool 101 will now be described the voltage over the (empty) super capacitor unit is low (zero), and the switch 111 istherefore open. The power supply unit 104 provides electrical power to the unit 107, and theelectrical regulator 109 is in charging mode since the voltage over the (empty) supercapacitor unit is below a threshold voltage level. This threshold voltage level may e.g. be 18V. ln the charging mode the electrical power is regulated to either supply the super capacitorunit with a constant current, or with a constant electrical power. Thus the super capacitor unitwill charge, and the voltage over the super capacitor unit will gradually increase until it reaches the threshold voltage level where it is fully charged.
[0045] voltage regulating mode. Thus the voltage over the fully charged super capacitor unit 110 will Above the threshold voltage level the electrical regulator 109 will switch to a be maintained at the threshold level. An operator of the power tool, or a supervising system,may be informed by the actual charging status of the super capacitor unit, i.e. indicating thatthe super capacitor unit is charged or indicating that the super capacitor unit is charging. This may be indicated visually by means of a light indicator.
[0046] from the power supply unit 104 to drive the motor. When the power capacity of the power During operation of the power tool, electrical power is continuously provided supply unit is sufficient to power the operation of the power tool, the power tool is powered bythis power only. The power supply system is preferably configured to provide electrical powerfrom the power supply unit to sufficiently power the power tool outside intermittent peak power situations. Such intermittent peak power situations may arise e.g. during start up of the power tool when the rotating parts having a relative high inertia must be accelerated.Peak power situations may further arise during operation of the device, e.g. in case oftightening a fastening element such as a nut when the final tightening operation requires a high power.
[0047] additional electrical power is supplied from the super capacitor unit to drive the motor. These Thus when the power demand of the motor is higher than the power threshold, intermittent peak power situations when the power demand is higher than the powerthreshold are short, and the power demand of the motor thereafter falls below the powerthreshold.
[0048] available power above the actual power demand of the power tool is used to charge the When the power provided to the motor is below the power threshold the super capacitor unit. Thus the super capacitor unit may be charged while the motor is drivenby the power supply, but the power demand of the motor is below the power threshold. The super capacitor unit may also be charged while the motor is not operating.
[0049] disconnected or damaged, the diode element 108 limits current passing from the super ln case the super capacitor unit 110 is charged and the power cable 106 is capacitor unit thus reducing the risk of accidents.
[0050] comprising a power tool 201 with a motor 202 and a power supply system 203 for powering ln Fig. 2 an alternative embodiment of a power tool system 200 is shown the motor of the power tool.
[0051] power tool 201, and the power supply system is connected to the power tool via a power ln this embodiment the power supply system 203 is a separate part from the cable 206 capable of transferring high power.
[0052] comprises an electrical power supply unit 204 connected to electrical mains 205. The Similarly to what is described in relation to Fig. 1, the power supply system 203 electrical power supply unit is preferably a smaller unit, e.g. capable of providing an electrical power of about 100 W, such as 72 W, and a voltage level of e.g. 18 V.
[0053] and configured to limit current in the direction from the power tool to the power supply.
A current limiting device 208 in the form of a unidirectional diode is provided Further, an electrical regulator 209 is provided functioning as described in relation to Fig. 1.Between the electrical regulator and the power cable 206 of the power tool a super capacitor unit 210 is connected to ground.
[0054] Thus the embodiment disclosed in Fig. 2 differs from the one shown in Fig. 1 inthat the full power provided to the power tool to drive the motor is supplied through the powercable 206, which thus is dimensioned for conducting peak power from the super capacitor unit 210 and the power supply unit 204.
Claims (13)
1. _ A method of driving a motor (102, 202) of a power tool (101) comprising; providing electrical power through a power cable from a power supply (104) to drivethe motor (102, 202), wherein the power supply (104) is configured to provide powerup to a power threshold, above the power threshold providing additional electrical power from a supercapacitor unit (110) to drive the motor (102, 202) the supercapacitor unit (110) beingcomprised in the power tool (101), and charging the super capacitor unit (110) by means of the power supply (104). _ The method according to claim 1 comprising charging the super capacitor unit (110) by means of the power from the power supply (104) when the power provided to themotor (102, 202)is below the power threshold. _ The method according to claim 2 comprising charging the super capacitor unit (110) while the motor (102, 202) is driven by the power supply (104). _ The method according to any one of the preceding claims comprising providing power from the power supply (104) while regulating the current, or regulating the power, upto a voltage threshold. _ The method according to claim 4 comprising providing power from the power supply (104) regulated towards constant voltage at or over the voltage threshold. _ The method according to any one of the preceding claims comprising limiting electrical current in a direction from the super capacitor unit (110) to the power supply(104). _ The method according to any one of the preceding claims comprising indicating to an operator that the super capacitor unit (110) is charged or indicating that the supercapacitor unit (110) is charging. _ A power supply system (103) for a motor (102, 202) of a power tool (101), comprising an electrical power supply unit (104) connectable to a distant power source via apower cable (105),a regulating unit connected to the electrical power supply unit (104) and configured to 10. 11 12. 13. 11 provide electrical power to the motor (102, 202), wherein the regulating unit isconfigured to provide power from the electrical power supply unit (104) up to a powerthreshold, a super capacitor unit (110) configured to provide additional electrical power abovethe power threshold, to the motor (102, 202), wherein the super capacitor unit (110) isconnected to the electrical power supply unit (104) for charging. The power supply system (103) according to claim 8 wherein the regulating unit isconfigured to regulating the current, or regulating the power, up to a voltagethreshold, and to providing power from the power supply unit (104) regulated towardsconstant voltage at or over the voltage threshold. The power supply system (103) according to claim 8 or 9 comprising a power cableand wherein the power supply system (103) is configured to provide power from thedistant power source to the motor (102, 202) through the power cable. .A power tool (101) comprising a motor (102, 202), a super capacitor unit (110), a regulating unit, and an electrical connection for cable connection to a distant power source, wherein the regulating unit is configured to regulate incoming power from the distantpower source to not exceed a power threshold, and wherein the super capacitor unit(110) is configured to provide additional power to the motor (102, 202) above saidpower threshold, and wherein the super capacitor unit (110) is configured to becharged by the distant power source via the electrical connection. The power tool (101) according to claim 11, wherein the motor (102, 202) may beused as a generator and wherein the super capacitor unit (110) is configured to becharged by the motor (102, 202) at instances when the motor (102, 202) is used asgenerator. The power tool (101) according to any one of claims 11 or 12 wherein the regulatingunit is configured to regulate the current, or regulate the power, up to a voltagethreshold, and to regulate power from the power supply unit (104) towards constantvoltage at or over the voltage threshold.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1551318A SE543362C2 (en) | 2015-10-13 | 2015-10-13 | A method of driving a motor of a power tool, a power supply system and a power tool |
| CN201680059430.8A CN108136574A (en) | 2015-10-13 | 2016-09-23 | Drive method, electric power supply system and the power tool of the motor of power tool |
| JP2018518957A JP2018530447A (en) | 2015-10-13 | 2016-09-23 | Method for driving motor of power tool, power supply system, and power tool |
| KR1020187012910A KR20180067585A (en) | 2015-10-13 | 2016-09-23 | Motor drive method of power tool, power system and power tool |
| PCT/EP2016/072713 WO2017063852A1 (en) | 2015-10-13 | 2016-09-23 | A method of driving a motor of a power tool, a power supply system and a power tool |
| EP16778254.9A EP3362227A1 (en) | 2015-10-13 | 2016-09-23 | A method of driving a motor of a power tool, a power supply system and a power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1551318A SE543362C2 (en) | 2015-10-13 | 2015-10-13 | A method of driving a motor of a power tool, a power supply system and a power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE1551318A1 SE1551318A1 (en) | 2017-04-14 |
| SE543362C2 true SE543362C2 (en) | 2020-12-15 |
Family
ID=57113279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1551318A SE543362C2 (en) | 2015-10-13 | 2015-10-13 | A method of driving a motor of a power tool, a power supply system and a power tool |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3362227A1 (en) |
| JP (1) | JP2018530447A (en) |
| KR (1) | KR20180067585A (en) |
| CN (1) | CN108136574A (en) |
| SE (1) | SE543362C2 (en) |
| WO (1) | WO2017063852A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019033875A1 (en) * | 2017-08-18 | 2019-02-21 | 南京德朔实业有限公司 | Circular saw |
| KR102307486B1 (en) * | 2019-08-26 | 2021-10-01 | 조방훈 | Starting and stopping power controlling of tapping machines |
| EP3988227B1 (en) * | 2020-10-22 | 2023-04-05 | GESIPA Blindniettechnik GmbH | Blind rivet setting device |
| EP3988250A1 (en) * | 2020-10-22 | 2022-04-27 | ELRAD International d.o.o. | Hand-held electric tool for intermittent operation |
| CN114024280A (en) * | 2021-12-03 | 2022-02-08 | 广东电网有限责任公司 | Cable deicing device |
| WO2023235405A1 (en) * | 2022-06-01 | 2023-12-07 | Milwaukee Electric Tool Corporation | Hybrid supercapacitors in power tool devices |
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| CN1302108A (en) * | 1999-12-29 | 2001-07-04 | 兴能高科技股份有限公司 | Electric power storage device and tool with the electric power storage device |
| JP2003048177A (en) * | 2001-08-03 | 2003-02-18 | Nec Tokin Corp | Portable electric power tool |
| EP1363386B1 (en) * | 2002-05-13 | 2005-01-05 | Luxon Energy Devices Corporation | High current pulse generator |
| US20040070369A1 (en) * | 2002-10-11 | 2004-04-15 | Makita Corporation | Adapters for battery chargers |
| GB2423199B (en) * | 2005-02-11 | 2009-05-13 | Pa Consulting Services | Power supply systems for electrical devices |
| EP1879253A1 (en) * | 2006-07-10 | 2008-01-16 | Apogee Power, Inc. | Composite battery pack of power tool |
| KR100921125B1 (en) * | 2008-03-04 | 2009-10-12 | 현대자동차주식회사 | Hybrid Fuel Cell Vehicle with multi-power source and multi-drive system |
| DE102008014545A1 (en) * | 2008-03-15 | 2009-09-17 | Hans Kilian Fremmer | Electric tool e.g. electric planer, is electrically operated by network cable or selectively by one or more accumulators and batteries, where accumulators are compatible to tool according to dimensions of tool |
| JP2009262254A (en) * | 2008-04-23 | 2009-11-12 | Katsuyuki Totsu | Combination of cordless power tool and non-contact charging device |
| JP5535517B2 (en) * | 2009-04-30 | 2014-07-02 | 勝行 戸津 | Driving method of electric tool using capacitor power supply device |
| JP5549863B2 (en) * | 2010-06-08 | 2014-07-16 | 日立工機株式会社 | Battery pack and electric tool using the same |
| JP2012135827A (en) * | 2010-12-25 | 2012-07-19 | Hitachi Koki Co Ltd | Powered rotation tool |
| JP2012191838A (en) * | 2011-02-24 | 2012-10-04 | Hitachi Koki Co Ltd | Battery pack, electric tool, adapter for connecting battery pack and electric tool, and electric tool system |
| DE102011077485A1 (en) * | 2011-06-14 | 2012-12-20 | Kress-Elektrik Gmbh & Co. Kg | Electric implement with an electric machine, in particular a hand-held power tool |
| CN202309109U (en) * | 2011-09-08 | 2012-07-04 | 浙江师范大学 | Electric tool power supply system with energy-saving power assisting function |
| KR102044052B1 (en) * | 2012-02-28 | 2019-11-12 | 프레지던트 앤드 펠로우즈 오브 하바드 칼리지 | Apparatus, system, and method for providing fabric-elastomer composites as pneumatic actuators |
| JP2015208820A (en) * | 2014-04-28 | 2015-11-24 | 美之嵐機械工業有限公司 | Power-saving electric screwdriver |
| JP6406568B2 (en) * | 2014-06-18 | 2018-10-17 | 勝行 戸津 | Driving operation method of power supply system for driving control of electric power tool |
| CN204340720U (en) * | 2014-11-24 | 2015-05-20 | 北汽福田汽车股份有限公司 | The power system of electronlmobil and electronlmobil |
-
2015
- 2015-10-13 SE SE1551318A patent/SE543362C2/en not_active Application Discontinuation
-
2016
- 2016-09-23 KR KR1020187012910A patent/KR20180067585A/en unknown
- 2016-09-23 CN CN201680059430.8A patent/CN108136574A/en active Pending
- 2016-09-23 WO PCT/EP2016/072713 patent/WO2017063852A1/en active Application Filing
- 2016-09-23 JP JP2018518957A patent/JP2018530447A/en active Pending
- 2016-09-23 EP EP16778254.9A patent/EP3362227A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP3362227A1 (en) | 2018-08-22 |
| WO2017063852A1 (en) | 2017-04-20 |
| KR20180067585A (en) | 2018-06-20 |
| JP2018530447A (en) | 2018-10-18 |
| CN108136574A (en) | 2018-06-08 |
| SE1551318A1 (en) | 2017-04-14 |
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