WO2013041927A1 - Outil électrique - Google Patents

Outil électrique Download PDF

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Publication number
WO2013041927A1
WO2013041927A1 PCT/IB2012/001481 IB2012001481W WO2013041927A1 WO 2013041927 A1 WO2013041927 A1 WO 2013041927A1 IB 2012001481 W IB2012001481 W IB 2012001481W WO 2013041927 A1 WO2013041927 A1 WO 2013041927A1
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WO
WIPO (PCT)
Prior art keywords
unit
temperature
rated voltage
battery pack
battery
Prior art date
Application number
PCT/IB2012/001481
Other languages
English (en)
Japanese (ja)
Inventor
昌彰 岡田
昌樹 池田
啓 河合
則宏 岩村
Original Assignee
パナソニック株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to EP12833482.8A priority Critical patent/EP2759379B1/fr
Priority to CN201280045657.9A priority patent/CN103813887B/zh
Publication of WO2013041927A1 publication Critical patent/WO2013041927A1/fr

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

Definitions

  • the present invention relates to an electric tool.
  • an electric tool is known (for example, refer to patent documents 1).
  • the electric power tool described in Patent Document 1 includes a battery pack having battery cells, and an electric power tool main body that is driven by a drive unit in response to supply of electric power from the battery pack.
  • the battery cell when a current flows through the battery cell, the battery cell generates heat.
  • the heat generation of the battery cell occurs not only during charging but also during discharging.
  • battery cells may deteriorate at high temperatures.
  • the electric power tool of Patent Document 1 is provided with a temperature sensor that detects the temperature of the battery cell, and when the temperature value acquired from the temperature sensor exceeds a predetermined value (temperature threshold value), Try to limit the output.
  • the temperature threshold is switched according to the type of the battery pack.
  • the type of the battery pack include a lithium ion battery, a nickel metal hydride battery, and a nickel cadmium battery. Thereby, it is intended to prevent the battery cell from becoming high temperature when the battery cell is discharged. JP 2006-247821 A
  • the rate of temperature rise of the battery pack differs according to the rated voltage of the battery pack. . That is, in a battery pack having a high rated voltage, the temperature of the battery cell may quickly reach the temperature threshold. For this reason, even if the drive unit is controlled after the temperature of the battery cell reaches the temperature threshold, depending on the rated voltage of the battery pack, the battery cell becomes hot due to the temperature rise due to overshoot, and the deterioration of the battery cell is promoted. There were cases where it could not be prevented.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric motor that can effectively prevent deterioration of the battery pack due to temperature rise even when a battery pack having a high rated voltage is used.
  • the power tool of the present invention is a power tool including a battery pack including a battery cell, and a power tool body driven by a drive unit upon receiving power from the battery pack, the power tool body being the drive
  • the battery pack includes a rated voltage holding unit in which information on the rated voltage of the battery pack is held, and information on the rated voltage held in the rated voltage holding unit in the control unit.
  • a rated voltage information output unit that outputs, a battery temperature detection unit that detects the temperature of the battery cell, and a detection temperature output unit that outputs a temperature value detected by the battery temperature detection unit to the control unit,
  • the control unit limits the output of the driving unit when the temperature value of the battery cell exceeds a temperature threshold value determined according to the rated voltage. Further, in this electric power tool, when the control unit cannot identify the rated voltage information, the control unit uses a temperature threshold corresponding to the highest rated voltage as a temperature threshold, thereby limiting the output of the driving unit. It is preferable.
  • Another power tool of the present invention is a power tool including a battery pack including battery cells, and a power tool body driven by a drive unit upon receiving power from the battery pack, the power tool body being A control unit that controls the drive unit, wherein the battery pack controls a rated voltage holding unit that holds information on a rated voltage of the battery pack, and information on a rated voltage held in the rated voltage holding unit.
  • a rated voltage information output unit that outputs to the unit, a battery temperature detection unit that detects the temperature of the battery cell every predetermined time, and a detected temperature output that outputs the temperature value detected by the battery temperature detection unit to the control unit
  • a temperature comparison determination unit that determines whether or not the temperature value of the battery cell exceeds a temperature threshold, and a determination that the temperature comparison determination unit has exceeded the temperature threshold continues.
  • Count count An excess continuous number counting unit, and a control start determining unit that starts limiting the output of the driving unit when the number of times counted by the excess continuous number counting unit exceeds a count threshold determined according to the rated voltage; It is characterized by having. Further, in this electric power tool, when the control unit cannot identify the rated voltage information, the control unit uses the count threshold corresponding to the highest rated voltage as the count threshold, thereby limiting the output of the drive unit. It is preferable.
  • the battery pack can be effectively prevented from being deteriorated due to a temperature rise.
  • FIG. 3 is a circuit diagram of the electric power tool according to the first embodiment. It is a graph which shows the relationship between the temperature of the battery cell of the battery pack of Embodiment 1, and time, (a) shows the case where the battery pack of a rated voltage higher than usual is used, (b) is a rating lower than usual. The case where the battery pack of voltage is used is shown.
  • the electric power tool of Embodiment 1 is provided with the battery pack 1 and the electric power tool main body 3 incorporating the drive part 4 as FIG. 2 shows.
  • the battery pack 1 is detachably attached to the battery pack mounting portion 32 at the lower end of the grip portion 31 of the electric tool main body 3.
  • the electric power tool is configured such that the drive unit 4 built in the electric power tool body 3 is driven by receiving power from the battery pack 1.
  • the electric power tool has a control unit 5 in the electric power tool main body 3, and the control unit 5 controls the driving unit 4 that is driven by power supplied from the battery pack 1.
  • the battery pack 1 has a plurality of battery cells 11 and supplies power to the drive unit 4 of the electric power tool body 3.
  • the battery pack 1 includes the battery cell 11, the rated voltage holding unit 12, the rated voltage information output unit 13, the battery temperature detection unit 14, and the detection temperature output unit 15. ing.
  • the battery pack 1 is accommodated in a battery pack housing 10.
  • the battery cell 11 includes a plurality of secondary battery cells.
  • the secondary battery cell of the present embodiment is constituted by a lithium battery.
  • the battery cell 11 of this embodiment has a rated voltage of, for example, 3.6V.
  • the battery cell 11 is electrically connected to a power output terminal 16 provided so as to be exposed to the battery pack housing 10.
  • the rated voltage holding unit 12 holds information on the rated voltage of the battery pack 1.
  • the rated voltage holding unit 12 includes a nonvolatile memory, a resistor, and the like.
  • the rated voltage information is configured by rated voltage value data, and the data is stored in the memory.
  • the rated voltage holding unit 12 is configured by a resistor
  • the rated voltage information is configured by a resistance value corresponding to the rated voltage (in other words, a different resistance value for each rated voltage).
  • the control unit 5 is configured to identify a rated voltage associated with each resistance value.
  • the rated voltage information output unit 13 outputs information on the rated voltage held in the rated voltage holding unit 12 to the control unit 5 in the electric power tool body 3.
  • the rated voltage information output unit 13 of the present embodiment is configured by an information output terminal electrically connected to the rated voltage holding unit 12.
  • the rated voltage information output unit 13 is provided so as to be exposed to the battery pack housing 10 as shown in FIG.
  • the battery temperature detection unit 14 detects the temperature of the battery cell 11.
  • the battery temperature detection part 14 is comprised by the temperature detection element (for example, thermistor).
  • the battery temperature detection unit 14 converts the detected temperature of the battery cell 11 into electrical information and makes it ready for output.
  • the detected temperature output unit 15 outputs the temperature value detected by the battery temperature detection unit 14 to the control unit 5 in the electric power tool body 3.
  • the detection temperature output unit 15 includes a temperature output terminal electrically connected to the battery temperature detection unit 14. As shown in FIG. 2, the detected temperature output unit 15 is provided so as to be exposed to the battery pack housing 10.
  • the battery pack 1 having such a configuration is detachably attached to the battery pack mounting portion 32 at the lower end of the grip portion 31 of the electric tool main body 3.
  • the electric power tool body 3 is connected to the drive unit 4, the control unit 5 that controls the drive unit 4, the information input terminal 33 connected to the information output terminal, and the temperature output terminal. Temperature input terminal 34.
  • the electric power tool body 3 further includes a trigger switch 35 and a power supply switch portion 36 that turns driving ON / OFF in conjunction with the trigger switch 35. As shown in FIG.
  • the electric tool main body 3 is configured by a main body housing 37.
  • the main body housing 37 houses a part of the drive unit 4, the control unit 5, the information input terminal 33, the temperature input terminal 34, the trigger switch 35, the power supply switch 361, and the like.
  • the drive unit 4 drives the rotation output unit 42 to rotate.
  • the drive unit 4 includes a motor M serving as a drive source and a power transmission unit (not shown) that is connected to the motor M and transmits power to the rotation output unit 42.
  • the rotation output unit 42 is configured such that the tip tool is detachably mounted.
  • the drive unit 4 is provided such that the motor M and the power transmission unit are accommodated in the main body housing 37, and the rotation output unit 42 is exposed from one end of the main body housing 37.
  • the control unit 5 includes a control circuit 51 that performs electrical control of the electric tool, and a drive control unit 52 that performs drive control of the motor M in response to a signal output from the control circuit 51.
  • the control circuit 51 includes a microprocessor as a main component.
  • the control circuit 51 is electrically connected to the rated voltage holding unit 12 via the information input terminal 33 and the information output terminal.
  • the control circuit 51 is electrically connected to the battery temperature detection unit 14 via the temperature input terminal 34 and the temperature output terminal.
  • the control circuit 51 is electrically connected to the battery cell 11 via the power input terminal 38 and the power output terminal 16. The detailed configuration of the control circuit 51 will be described later.
  • the drive control unit 52 is electrically connected to the motor M and the control circuit 51 and controls the number of rotations of the motor M.
  • the drive control unit 52 of the present embodiment is configured by a switching element.
  • the drive control unit 52 receives the signal output from the control circuit 51 and controls the number of rotations of the motor M by turning on / off the switching element.
  • the information input terminal 33 is electrically connected to the control circuit 51 and is provided in the battery pack mounting portion 32 of the main body housing 37.
  • the information input terminal 33 is connected to the rated voltage information output unit 13 that is an information output terminal of the battery pack 1 when the battery pack 1 is mounted in the battery pack mounting unit 32.
  • the temperature input terminal 34 is electrically connected to the control unit 5 and is provided in the battery pack mounting part 32 of the main body housing 37.
  • the temperature input terminal 34 is connected to the detected temperature output unit 15 that is a temperature output terminal of the battery pack 1 when the battery pack 1 is mounted on the battery pack mounting unit 32.
  • the trigger switch 35 is interlocked with a trigger handle 351 that is provided so as to protrude and retract in the grip portion 31 of the main body housing 37.
  • the trigger switch 35 turns on / off the power supply switch 361 in conjunction with the ON / OFF.
  • the power supply switch 361 is turned on in conjunction with this, whereby the control circuit 51 is supplied with power through the power supply switch 361 and the constant voltage source 39. As shown in FIG.
  • the trigger switch 35 includes a variable resistor 352 that changes the resistance value according to the pulling operation amount of the trigger handle 351.
  • the trigger switch 35 sets a resistance value corresponding to the pulling operation amount, and the control circuit 51 receives this, and the motor M drives at a rotation speed corresponding to the resistance value.
  • a signal is output to the drive control unit 52. If the user pulls the trigger handle 351 fully, the motor M is driven at the full rotation speed. On the other hand, when the user releases the trigger handle 351 to return to the original position and turns off the trigger switch 35, the trigger switch 35 short-circuits the voltage input terminals of the motor M, thereby braking the drive of the motor M.
  • the electric tool of the present embodiment is configured such that the temperature of the battery cell 11 is detected, and the controller 5 limits the output of the motor M when the temperature of the battery cell 11 exceeds the temperature threshold.
  • the temperature threshold in the present embodiment is determined according to the rated voltage of the battery pack 1. This will be described below. As shown in FIG.
  • the control circuit 51 includes a threshold memory 61 that stores a plurality of different temperature thresholds, a temperature threshold acquisition unit 62 that acquires the temperature threshold stored in the threshold memory 61, and the battery cell 11.
  • a comparison / determination unit 63 that compares the temperature and the temperature threshold is provided.
  • the threshold memory 61 stores a plurality of temperature thresholds corresponding to the rated voltage of the battery pack 1 in advance. In other words, the threshold memory 61 stores the first rated voltage in association with the first temperature threshold corresponding thereto, and further stores the second rated voltage in association with the second temperature threshold corresponding thereto. is doing. Similarly, the third rated voltage, the fourth rated voltage,... And the corresponding third temperature threshold, the fourth temperature threshold,... Are stored in association with each other.
  • the temperature threshold value acquisition unit 62 is connected to the information input terminal 33, and when the battery pack 1 is attached to the electric power tool main body 3, it is an information output terminal of the battery pack 1, that is, the rated voltage information output unit 13 is electrically connected. Connected.
  • the temperature threshold acquisition unit 62 acquires a temperature threshold corresponding to the rated voltage information from the threshold memory 61. For example, when the rated voltage of the battery pack 1 is the first rated voltage, the temperature threshold value acquiring unit 62 receives the first rated voltage information from the rated voltage information output unit 13 and receives the first threshold voltage from the threshold memory 61. 1 temperature threshold is obtained.
  • the temperature threshold acquisition unit 62 selects a temperature threshold corresponding to the highest rated voltage among the temperature thresholds stored in the threshold memory 61. get.
  • the temperature threshold acquisition unit 62 outputs the temperature threshold information acquired from the threshold memory 61 in this way to the comparison determination unit 63.
  • the comparison determination unit 63 is connected to the temperature input terminal 34 and is electrically connected to the detected temperature output unit 15 that is a temperature output terminal of the battery pack 1 when the battery pack 1 is attached to the electric tool body 3. The Thereby, the data of the temperature value of the battery cell 11 is input from the battery temperature detection unit 14 to the comparison determination unit 63.
  • the comparison determination unit 63 is determined according to the temperature value and the rated voltage of the battery cell 11. Compare the measured temperature threshold.
  • the comparison determination unit 63 determines that the temperature value of the battery cell 11 has exceeded the temperature threshold determined according to the rated voltage, the comparison determination unit 63 outputs a signal to the drive control unit 52 to limit the output of the motor M. To do.
  • the drive control unit 52 controls the drive of the motor M based on the signal. At this time, the drive control unit 52 restricts the output of the motor M.
  • the electric power tool determines whether or not the temperature value of the battery cell 11 exceeds the temperature threshold using the temperature threshold determined according to the rated voltage of the battery pack 1.
  • a low value the temperature increase due to the overshoot of the battery pack 1 having a high rated voltage is subtracted from the maximum allowable temperature value (temperature threshold A)).
  • a temperature threshold can be set in the temperature threshold B) (see FIG. 4A).
  • the temperature threshold can be set to a value (temperature threshold C) higher than the temperature threshold B having a high rated voltage (see FIG. 4B).
  • the maximum allowable temperature value (temperature threshold A) referred to here is the maximum temperature value that does not adversely affect the performance of the battery cell 11.
  • the conventional electric tool has taken into consideration the temperature rise due to overshoot from the temperature threshold A so as not to reach the temperature threshold A (that is, the maximum allowable temperature value).
  • the temperature threshold was set uniformly (see FIG. 5A).
  • the temperature threshold is set to be significantly lower than the temperature threshold A on the assumption that the temperature rise due to overshoot is large
  • the temperature threshold will be too low. That is, in this case, when the electric tool is used, the output of the drive unit 4 is frequently limited, and an excessive limitation may occur.
  • the temperature threshold is set to a temperature slightly lower than the temperature threshold A
  • the temperature of the battery pack 1 is the temperature threshold when the battery pack 1 having a high rated voltage that increases the temperature due to overshoot is used. A is exceeded (see FIG. 5B). This is because the battery pack 1 having a high rated voltage is rapidly heated by use.
  • the electric power tool of the present embodiment determines the temperature threshold according to the rated voltage of the battery pack 1, it is possible to limit the output of the drive unit 4 using a different temperature threshold for each rated voltage. (FIGS. 4A and 4B). For this reason, deterioration of the battery pack 1 can be prevented while preventing the output of the drive unit 4 from being excessively limited.
  • the electric power tool of this embodiment acquires the temperature threshold value corresponding to the highest rated voltage as a temperature threshold value, when the temperature threshold value acquisition part 62 cannot identify rated voltage information. For this reason, even if the information on the rated voltage is not transmitted to the control unit 5, it is possible to prevent the battery cell 11 of the battery pack 1 from becoming high temperature and being deteriorated.
  • Embodiment 2 will be described with reference to FIGS. Since the second embodiment is mostly the same as the first embodiment, the same portions are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.
  • the configuration of the control circuit 51 of the control unit 5 and the configuration of the battery temperature detection unit 2 are different from the structure of the first embodiment, and other configurations are the same.
  • the battery temperature detection part 2 of this embodiment detects the temperature of the battery cell 11 for every predetermined time.
  • the battery temperature detection part 2 is comprised by the temperature detection element (for example, thermistor).
  • the battery temperature detection unit 2 converts the detected temperature of the battery cell 11 into electrical information and makes it ready for output. As shown in FIG.
  • the control circuit 51 of the present embodiment includes a temperature comparison determination unit 71, a threshold memory 72 having a count threshold storage unit 721 and a temperature threshold storage unit 722, an excess continuous number counting unit 73, A count threshold acquisition unit 74 and a control start determination unit 75 are provided.
  • the temperature comparison / determination unit 71 is connected to the temperature input terminal 34 (see FIG. 3).
  • the temperature comparison determination unit 71 is electrically connected to the detected temperature output unit 15 that is a temperature output terminal. Connected. As a result, temperature value data of the battery cell 11 is input from the battery temperature detection unit 2 to the temperature comparison determination unit 71.
  • the temperature comparison determination unit 71 acquires a predetermined temperature threshold value stored in the threshold value memory 72. Thereby, the temperature comparison determination unit 71 determines whether or not the temperature value of the battery cell 11 exceeds a predetermined temperature threshold value. The temperature comparison determination unit 71 outputs the determined information to the excess continuous number counting unit 73. When the temperature comparison determination unit 71 determines that “the temperature value of the battery cell 11 exceeds the temperature threshold”, the excess continuous number counting unit 73 counts “+1” in the counting unit. On the other hand, when the temperature comparison determination unit 71 determines that “the temperature value of the battery cell 11 is equal to or lower than the temperature threshold”, the excess continuous number counting unit 73 resets the count counted so far by the counting unit.
  • the threshold memory 72 includes a count threshold storage unit 721 that stores a count threshold, and a temperature threshold storage unit 722 that stores a predetermined temperature threshold.
  • the count threshold storage unit 721 stores a plurality of count thresholds (hereinafter referred to as count thresholds) corresponding to the rated voltage of the battery pack 1 in advance.
  • the count threshold value storage unit 721 stores the first rated voltage and the corresponding first count threshold value in association with each other, and further associates the second rated voltage with the corresponding second count threshold value. I remember.
  • the temperature threshold storage unit 722 stores a predetermined temperature threshold. Unlike the first embodiment, the temperature threshold storage unit 722 stores a constant temperature threshold.
  • the count threshold acquisition unit 74 is connected to the information input terminal 33, and is connected to the rated voltage information output unit 13 that is an information output terminal when the battery pack 1 is attached to the electric power tool body 3. When the rated voltage information is input from the rated voltage information output unit 13, the count threshold acquisition unit 74 acquires the corresponding count threshold from the threshold memory 72.
  • the count threshold acquisition unit 74 receives the first rated voltage information from the rated voltage information output unit 13 and receives the first threshold voltage from the threshold memory 72. A count threshold of 1 is acquired.
  • the count threshold acquisition unit 74 sets the count threshold corresponding to the highest rated voltage among the count thresholds stored in the threshold memory 72. get.
  • the count threshold acquisition unit 74 outputs the count threshold information acquired from the threshold memory 72 in this way to the control start determination unit 75.
  • the control start determination unit 75 receives the count number of the excess continuous number counting unit 73. Compare with count threshold. When the control start determination unit 75 determines that the count number has exceeded a count threshold determined according to the rated voltage, the control start determination unit 75 outputs a signal to the drive control unit 52 to start limiting the output of the motor M. .
  • the electric tool of this embodiment detects the temperature of the battery cell 11 for every predetermined time, and determines whether to start the restriction
  • the electric power tool of the present embodiment detects the temperature of the battery cell 11 every predetermined time, and counts the number of times that the predetermined temperature threshold is exceeded and continues for the measured temperature of the battery cell 11 each time. Count as. Only when the count reaches a predetermined number, the output of the drive unit 4 is limited. Normally, when control is performed to start such output restriction of the drive unit 4, a time lag occurs after the temperature of the battery cell 11 reaches a predetermined temperature threshold (see FIG. 7B). At this time, when the battery pack 1 having a high rated voltage is used, it is conceivable that the temperature is rapidly increased during this time lag.
  • the electric power tool of this embodiment determines the count threshold according to the rated voltage, when the battery pack 1 with a high rated voltage is used, the time lag can be reduced by using a small count threshold. (See FIG. 7 (a)).
  • the power tool according to the present embodiment can perform an accurate operation corresponding to the situation by using a large count threshold. As a result, even when the battery pack 1 having a high rated voltage is used, the power tool of the present embodiment greatly increases due to the time lag from the time when the battery cell 11 reaches the temperature threshold until the start of control. It is possible to prevent as much as possible from warming.
  • the electric power tool of this embodiment acquires the count threshold value corresponding to the highest rated voltage as a count threshold value, when the count threshold value acquisition part 74 cannot identify rated voltage information. For this reason, even if the information on the rated voltage is not transmitted to the control unit 5 for some reason, it is possible to prevent the battery cell 11 of the battery pack 1 from becoming high temperature and being deteriorated.
  • the fixed temperature threshold value was used for the temperature threshold value of Embodiment 2
  • FIG. The preferred embodiments of the present invention have been described above, but the present invention is not limited to these specific embodiments, and various modifications and variations that do not depart from the scope of the claims are possible. It belongs to the category of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne un outil électrique pourvu : d'un bloc de piles (1) qui comprend une pile; et d'un corps principal d'outil électrique (3) qui reçoit l'alimentation électrique par le bloc de piles (1) et est entraîné par une unité d'entraînement (4). Le corps principal d'outil électrique (3) est pourvu d'une unité de commande (5) qui commande l'unité d'entraînement (4). Le bloc de piles (1) est pourvu : d'une unité de maintien de tension nominale (12) à laquelle les informations de la tension nominale du bloc de piles (1) sont maintenues; d'une unité d'émission des informations sur la tension nominale (13) qui transmet les informations de la tension nominale maintenue au niveau de l'unité de maintien de la tension nominale (12) à l'unité de commande (5); d'une unité de détection de la température de la pile (14) qui détecte la température de la pile (11); et d'une unité d'émission de température détectée (15) qui transmet la valeur de température détectée par l'unité de détection de la température de pile (14) à l'unité de commande (5). L'unité de commande (5) limite l'émission de l'unité de commande (4) lorsque la valeur de la température de la pile (11) dépasse un seuil de température stipulé selon la tension nominale.
PCT/IB2012/001481 2011-09-21 2012-08-02 Outil électrique WO2013041927A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12833482.8A EP2759379B1 (fr) 2011-09-21 2012-08-02 Outil électrique
CN201280045657.9A CN103813887B (zh) 2011-09-21 2012-08-02 电动工具

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JP2011206211A JP5793674B2 (ja) 2011-09-21 2011-09-21 電動工具
JP2011-206211 2011-09-21

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WO2013041927A1 true WO2013041927A1 (fr) 2013-03-28

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JP (1) JP5793674B2 (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11955830B2 (en) 2021-04-27 2024-04-09 Techtronic Cordless Gp Battery temperature based tool power reduction

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016055415A (ja) * 2014-09-12 2016-04-21 パナソニックIpマネジメント株式会社 電動工具
DE202015009680U1 (de) * 2014-12-18 2019-02-14 Koki Holdings Co., Ltd. Elektrowerkzeug
DE102016214106A1 (de) 2016-08-01 2018-02-01 Robert Bosch Gmbh Kontakthaltervorrichtung für eine Handwerkzeugmaschine
WO2020039523A1 (fr) * 2018-08-22 2020-02-27 三菱電機株式会社 Dispositif de commande logique programmable, unité cpu, unité fonctionnelle, procédé et programme

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006247821A (ja) 2005-03-14 2006-09-21 Matsushita Electric Works Ltd 電動工具
JP2011156625A (ja) * 2010-02-02 2011-08-18 Hitachi Koki Co Ltd 電動工具及び電池パック

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06124632A (ja) * 1992-10-12 1994-05-06 Uchihashi Estec Co Ltd 合金型温度ヒュ−ズの使用方法
JP3873648B2 (ja) * 2001-04-10 2007-01-24 日立工機株式会社 充電機能付き直流電源装置
US7589500B2 (en) * 2002-11-22 2009-09-15 Milwaukee Electric Tool Corporation Method and system for battery protection
JP4096951B2 (ja) * 2005-03-28 2008-06-04 松下電工株式会社 電気機器
JP5122750B2 (ja) * 2006-02-23 2013-01-16 パナソニック株式会社 電動工具
JP2009089468A (ja) * 2007-09-27 2009-04-23 Panasonic Electric Works Co Ltd 電池パック
JP5065958B2 (ja) * 2008-03-26 2012-11-07 パナソニック株式会社 電池パック
CN101714647B (zh) * 2008-10-08 2012-11-28 株式会社牧田 电动工具用蓄电池匣以及电动工具
JP5461221B2 (ja) * 2010-02-12 2014-04-02 株式会社マキタ 複数のバッテリパックを電源とする電動工具

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006247821A (ja) 2005-03-14 2006-09-21 Matsushita Electric Works Ltd 電動工具
JP2011156625A (ja) * 2010-02-02 2011-08-18 Hitachi Koki Co Ltd 電動工具及び電池パック

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11955830B2 (en) 2021-04-27 2024-04-09 Techtronic Cordless Gp Battery temperature based tool power reduction

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Publication number Publication date
EP2759379B1 (fr) 2018-01-03
EP2759379A4 (fr) 2016-08-31
EP2759379A1 (fr) 2014-07-30
JP2013066959A (ja) 2013-04-18
CN103813887B (zh) 2015-10-07
CN103813887A (zh) 2014-05-21
JP5793674B2 (ja) 2015-10-14

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