WO2017208710A1 - Dispositif de charge - Google Patents

Dispositif de charge Download PDF

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Publication number
WO2017208710A1
WO2017208710A1 PCT/JP2017/016969 JP2017016969W WO2017208710A1 WO 2017208710 A1 WO2017208710 A1 WO 2017208710A1 JP 2017016969 W JP2017016969 W JP 2017016969W WO 2017208710 A1 WO2017208710 A1 WO 2017208710A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
battery pack
fan
charging
circuit component
Prior art date
Application number
PCT/JP2017/016969
Other languages
English (en)
Japanese (ja)
Inventor
裕司 喜嶋
晃洋 小林
Original Assignee
日立工機株式会社
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 日立工機株式会社 filed Critical 日立工機株式会社
Priority to JP2018520731A priority Critical patent/JP6835084B2/ja
Priority to CN201780033648.0A priority patent/CN109328422A/zh
Publication of WO2017208710A1 publication Critical patent/WO2017208710A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
    • H01M10/6235—Power tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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

Definitions

  • the present invention relates to a charging device that charges a battery pack that is detachably attached to, for example, a cordless electric tool.
  • the cordless electric tool is detachably mounted with a battery pack for supplying electric power to a motor that is a drive source.
  • the battery pack includes a secondary battery cell such as a rechargeable lithium battery.
  • a charging device is used to charge the battery pack.
  • the charging device includes a fan for cooling the battery pack being charged.
  • the wind window of the battery pack attached to the charging device and the intake port of the charging device communicate with each other, and the air flow generated by the fan is sucked into the charging device through the inside of the battery pack and exhausted from the exhaust port of the charging device. Is done.
  • the present invention has been made in view of such a situation, and an object of the present invention is to provide a charging device capable of suitably cooling a battery pack and a charging circuit component being charged.
  • the charging device includes a case having an installation portion on a lower surface and a battery pack mounting portion on an upper surface, a fan provided in the case, and a charging circuit component provided in the case.
  • the case has an exhaust port and first and second intake ports, the exhaust port faces the battery pack mounting portion, and an air flow generated by the fan is sucked from the first intake port and charged. The first airflow flowing toward the exhaust port without passing through the circuit components for use, and the air drawn from the second intake port, passing through the circuit components for charging, and merged with the first airflow toward the exhaust port And a second air flow that flows.
  • the fan may be provided below the battery pack mounting portion, and the first intake port may be provided on a lower surface of the case and face the exhaust port.
  • the charging circuit component may be provided at a position avoiding a space between the exhaust port and the first intake port.
  • the charging device includes a case having an installation portion on a lower surface and a battery pack mounting portion on an upper surface, a fan provided in the case, and a charging circuit component provided in the case.
  • the case has an intake port and first and second exhaust ports, the intake port faces the battery pack mounting portion, and an air flow generated by the fan is sucked from the intake port and the charging circuit A first airflow that flows toward the first exhaust port without passing through the components, and a branch from the first airflow that is sucked in from the intake port and passes through the charging circuit component toward the second exhaust port. And a second air flow that flows.
  • the fan may be a single fan provided below the battery pack mounting portion, and the first exhaust port may be provided on a lower surface of the case and face the intake port.
  • the charging circuit component may be provided at a position avoiding a space between the intake port and the first exhaust port.
  • the fan includes a first fan provided between the intake port and the first exhaust port, and a second fan provided between the intake port and the second exhaust port in the airflow. You may have.
  • the charging device includes a case having an installation portion on a lower surface and a battery pack mounting portion on an upper surface, a fan provided in the case, and a charging circuit component provided in the case.
  • the case has first and second intake ports and an exhaust port, the first intake port faces the battery pack mounting portion, and the airflow generated by the fan is sucked from the first intake port.
  • a second airflow flowing in the air is
  • the second air inlet may be provided on the lower surface of the case and face the first air inlet.
  • the charging circuit component may be provided at a position away from between the first and second intake ports.
  • This charging device has a case having an installation portion on the lower surface and a battery pack mounting portion on the upper surface, a single fan provided in the case, a circuit component for charging provided in the case,
  • the case has first and second air inlets and first and second air outlets, the first air inlet or the first air outlet facing the battery pack mounting portion, and the fan
  • the generated air currents are sucked from the first and second intake ports, merge with each other, a part flows toward the first exhaust port without passing through the charging circuit components, and the rest flows in the charging circuit. It flows through the part toward the second exhaust port.
  • This charging device has a case having an installation portion on the lower surface and a battery pack mounting portion on the upper surface, a single fan provided in the case, a circuit component for charging provided in the case, The case has first and second air inlets and first and second air outlets, the first air inlet or the first air outlet facing the battery pack mounting portion, and the fan
  • the generated air current is sucked from the first air intake port and flows toward the first exhaust port without passing through the charging circuit components, and the charging circuit is sucked from the second air intake port.
  • a second airflow flowing toward the second exhaust port through the component wherein the first and second airflows flow independently from each other.
  • the charging device which can cool suitably the battery pack currently charged and the circuit component for charging is provided.
  • FIG. 1 is a first perspective view of a charging device 1A according to Embodiment 1 of the present invention.
  • FIG. The 2nd perspective view of charging device 1A.
  • the perspective view of the battery pack 5 which can be charged with 1 A of charging devices.
  • FIG. 3 is a front sectional view of a state where the battery pack 5 is attached to the charging device 1A.
  • the front sectional view of the state where battery pack 5 is attached to charging device 1C according to Embodiment 3 of the present invention.
  • FIG. 6 is a front sectional view of a state where a battery pack 5 is attached to a charging device 1D according to Embodiment 4 of the present invention.
  • the charging device 1 ⁇ / b> A includes a case in which an upper case 2 and a lower case 3 are combined.
  • the upper case 2 and the lower case 3 are, for example, resin molded bodies.
  • the lower case 3 has a plurality of leg portions 3 a serving as installation portions on the lower surface.
  • the upper case 2 has a battery pack mounting portion 2a on the upper surface for mounting (sliding mounting) the battery pack 5 in a removable manner.
  • the charging device 1 is connected to an external power source such as a commercial power source by a power cord (not shown), and charges the battery pack 5 mounted on the battery pack mounting portion 2a with power supplied from the external power source.
  • an external power source such as a commercial power source by a power cord (not shown)
  • charges the battery pack 5 mounted on the battery pack mounting portion 2a with power supplied from the external power source since the structure regarding charging may be the same as the conventional one, description thereof is omitted here.
  • the upper case 2 has a predetermined number of wind windows 7 that open to the battery pack mounting portion 2 a.
  • the battery pack 5 has a predetermined number of wind windows 5 a facing the battery pack mounting portion 2 a of the upper case 2.
  • the wind window 5a and the wind window 7 communicate with each other in a state where the battery pack 5 is attached to the charging device 1A as shown in FIGS.
  • the battery pack 5 has a wind window 5b on the front surface.
  • the lower case 3 has an air window 6 that opens on the lower surface.
  • the wind window 6 is located below the battery pack mounting part 2a.
  • the lower case 3 has a wind window 8.
  • the wind window 8 opens at a position where a later-described charging circuit component exists in an air path between itself and a later-described fan 15.
  • the wind window 5a of the battery pack 5 is an intake port
  • the wind window 5b is an exhaust port.
  • the wind window 6 of the charging device 1A is a first intake port
  • the wind window 8 is a second intake port
  • the wind window 7 is an exhaust port.
  • a board 4, a charging circuit component provided on the board 4, and a fan 15 are provided in an internal space formed by the upper case 2 and the lower case 3.
  • the charging circuit components include a switching element 21 such as an FET, a photocoupler 22, a transformer 23, a diode 24, and heat radiation fins 25 to 27.
  • the fan 15 is an axial fan, and is held directly below the battery pack mounting portion 2a by the rib 13 of the upper case 2 so as to suck air from below and send it upward.
  • the board 4 and the charging circuit component provided on the board 4 are provided at a position avoiding the space between the wind window 6 and the wind window 7.
  • the space below the fan 15 and the accommodation space of the substrate 4 are partitioned by the rib 14 of the lower case 3 so that liquid such as water that has entered from the wind window 7 does not flow into the accommodation space of the substrate 4.
  • the airflow generated by the fan 15 includes a first airflow k1 and a second airflow k2.
  • the first air flow k ⁇ b> 1 is sucked from the wind window 6, flows toward the wind window 7 without passing through the charging circuit components on the substrate 4, and is exhausted from the wind window 7.
  • the second air flow k2 is sucked from the wind window 8, passes through the charging circuit components on the board 4 (cools the charging circuit components), and merges with the first air flow k1 on the suction side of the fan 15 toward the wind window 7. And is exhausted from the wind window 7.
  • the first airflow k1 and the second airflow k2 exhausted from the wind window 7 enter the battery pack 5 from the air window 5a of the battery pack 5, cool the battery cells and the like in the battery pack 5, and are exhausted from the air window 5b.
  • FIG. 7 is a front sectional view of a state where battery pack 5 is attached to charging device 1B according to Embodiment 2 of the present invention.
  • FIG. 8 is a right sectional view of the same state. In FIG. 8, only one wind window 5b is shown in a simplified manner.
  • the fan 15 is held by the lower case 3 below the battery pack mounting portion 2a and directly above the wind window 6 so as to suck air from above and send it out downward.
  • the fan 16 is an axial fan, and sucks air from the right side (the space below the wind window 7) in FIG. 7 and sends it out to the left side (board 4 and charging circuit component side).
  • the wind window 8 opens at a position where the charging circuit component on the substrate 4 exists in the air path between itself and the fan 16.
  • the wind window 5a of the battery pack 5 is an exhaust port
  • the wind window 5b is an intake port
  • the wind window 6 of the charging device 1B is a first exhaust port
  • the wind window 7 is an intake port
  • the wind window 8 is a second exhaust port.
  • the fan 15 and the fan 16 generate a first air flow k1 and a second air flow k2.
  • the first air flow k ⁇ b> 1 is sucked from the wind window 7, flows toward the wind window 6 without passing through the charging circuit components on the substrate 4, and is exhausted from the wind window 6.
  • the second air flow k2 is drawn from the wind window 7, branches from the first air flow k1, passes through the charging circuit components on the substrate 4 (cools the charging circuit components), flows toward the wind window 8, and from the wind window 8. Exhausted. As shown in FIG.
  • the first air flow k1 and the second air flow k2 are sucked into the battery pack 5 from the wind window 5b of the battery pack 5 before being sucked from the wind window 7, and the battery cells 5c in the battery pack 5 and the like. Is cooled, exhausted from the wind window 5a, and sucked into the charging device 1B from the wind window 7.
  • the cooling efficiency of the battery pack 5 is enhanced.
  • the charging circuit components on the substrate 4 are also cooled by the second air flow k2 after the battery pack 5 is cooled, it is possible to suitably cope with heat generation of the charging circuit components.
  • the same effect as in the first embodiment can be obtained on the waterproof surface.
  • FIG. 9 is a front sectional view of a state where battery pack 5 is mounted on charging device 1C according to Embodiment 3 of the present invention.
  • Charging device 1C corresponds to a device in which fan 15 is eliminated from charging device 1B according to the second embodiment shown in FIG.
  • the wind window 6 is a first intake port
  • the wind window 7 is a second intake port
  • the wind window 8 is an exhaust port.
  • the fan 16 generates a first air flow k1 and a second air flow k2.
  • the first air flow k1 is drawn from the wind window 7, passes through the charging circuit components on the substrate 4 (cools the charging circuit components), flows toward the wind window 8, and is exhausted from the wind window 8.
  • the first air flow k1 cools the battery pack 5 in the same manner as in the second embodiment (FIG. 8) before being sucked from the wind window 7.
  • the second air flow k2 is sucked in from the wind window 6, merges with the first air flow k1 on the suction side of the fan 16 (the space below the wind window 7), passes through the charging circuit components on the substrate 4 (the charging circuit components are passed through The air flows toward the wind window 8 and is exhausted from the wind window 8.
  • the circuit component for charging on the substrate 4 is formed by merging the second airflow k2 that has not cooled the battery pack 5 with the first airflow k1 while cooling the battery pack 5 with the first airflow k1. Therefore, the cooling efficiency of the charging circuit component can be increased as compared with the case where the charging circuit component is cooled only by the airflow after the battery pack 5 is cooled. Further, since the first air flow k1 and the second air flow k2 are generated by the single fan 16, the number of parts is small and the cost is low as in the first embodiment, which is advantageous for downsizing. In addition, the same effect as that of the first embodiment can be obtained on the waterproof surface.
  • FIG. 10 is a front sectional view of a state where battery pack 5 is attached to charging device 1D according to Embodiment 4 of the present invention.
  • the charging device 1D is different from that of the third embodiment shown in FIG. 9 in that a fan 17 is added and the wind window 8 of the lower case 3 is replaced with the wind window 9 in the upper case 2. Match on a point.
  • the fan 17 is provided on the opposite side of the fan 16 with the charging circuit component on the board 4 interposed therebetween, and sucks air from the right side (charging circuit component side) in FIG. 10 and sends it out to the left wind window 9 side. It is held by the lower case 3.
  • the number of fans is increased, the number of parts is increased as compared with the third embodiment, but the amount of cooling air can be increased.
  • the wind window 9 used as an exhaust port is provided in the upper part of charging device 1D, the upper part of the circuit component for charging can be cooled preferentially.
  • FIG. 11 is a front sectional view of a state where battery pack 5 is mounted on charging device 1E according to Embodiment 5 of the present invention.
  • the charging device 1E is different from that of the first embodiment shown in FIG. 6 in that a fan 16 is added and a wind window 10 serving as an air inlet is added to the lower case 3, and the other points are different.
  • the fan 16 has the same arrangement as that of the third embodiment shown in FIG.
  • the fan 15 and the fan 16 generate a first air flow k1 and a second air flow k2.
  • the first air flow k1 is sucked from the wind window 6 and merges with the second air flow k2 on the suction side of the fan 15 and the fan 16, and a part passes through the charging circuit components on the substrate 4 (cools the charging circuit components). ), Flows toward the wind window 8 and is exhausted from the wind window 8, and the rest flows toward the wind window 7 without passing through the charging circuit components on the substrate 4 and is exhausted from the wind window 7.
  • the second air flow k2 is sucked from the wind window 10 and merges with the first air flow k1 on the suction side of the fan 15 and the fan 16, and a part flows toward the wind window 7 without passing through the charging circuit components on the substrate 4.
  • the battery pack 5 and the charging circuit components on the substrate 4 are cooled by the strong and fresh air flow generated by the two fans 15 and 16, so that the battery pack 5 and the charging circuit components are cooled. Efficiency is increased. In addition, the same effect as in the first embodiment can be obtained on the waterproof surface.
  • FIG. 12 is a front sectional view of a state where battery pack 5 is attached to charging device 1F according to Embodiment 6 of the present invention.
  • Charging device 1F is different from that of the fifth embodiment shown in FIG. 11 in that first air flow k1 and second air flow k2 are guided by rib 12 and separated from each other (independent). Dissimilar and otherwise consistent.
  • the fan 15 and the fan 16 generate a first air flow k1 and a second air flow k2.
  • the first air flow k1 is sucked from the wind window 6, passes through the charging circuit components on the substrate 4 (cools the charging circuit components), flows toward the wind window 8, and is exhausted from the wind window 8.
  • the second air flow k ⁇ b> 2 is sucked from the wind window 10, flows toward the wind window 7 without passing through the charging circuit components on the substrate 4, and is exhausted from the wind window 7.
  • the battery pack 5 and the charging circuit components on the substrate 4 are cooled by the strong and fresh air flow generated by the two fans 15 and 16, so that the battery pack 5 and the charging circuit components are cooled. Efficiency is increased.
  • the same effect as in the first embodiment can be obtained on the waterproof surface.
  • the first air flow k ⁇ b> 1 and the second air flow k ⁇ b> 2 are generated by a single fan by using, for example, a single centrifugal fan disposed obliquely instead of the fan 15 and the fan 16. May be. In this case, the number of parts can be reduced although the air volume of the cooling air is reduced. 11 and 12, the direction of the fan 15 and the fan 16 may be reversed, and the wind windows 7 and 8 may be configured as intake ports and the wind windows 6 and 10 may be configured as exhaust ports.
  • SYMBOLS 1A-1F ... Charger (charger), 2 ... Upper case (upper outer frame), 2a ... Battery pack mounting part, 3 ... Lower case (lower outer frame), 3a ... Leg part, 4 ... Board (main board) 5 ... Battery pack, 5a, 5b ... Wind window, 6-10 ... Wind window, 12-14 ... Rib, 15-17 ... Fan, 21 ... Switching element, 22 ... Photocoupler, 23 ... Transformer, 24 ... Diode, 25- 27 ... radiating fins, k1 ... first air flow, k2 ... second air flow

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

Afin de fournir un dispositif de charge capable de refroidir correctement un bloc-batterie et des composants de circuit de charge pendant la charge, le dispositif de charge 1A est équipé d'un ventilateur 15, d'un substrat 4, de composants de circuit de charge disposés sur le substrat 4, qui sont placés dans un espace interne formé par un boîtier supérieur 2 et un boîtier inférieur 3. Une partie de fixation de bloc-batterie est prévue sur la surface supérieure du boîtier supérieur 2. Les flux d'air générés par le ventilateur 15 comprennent : un premier flux d'air k1 qui est aspiré par la fenêtre de ventilation 6 et s'écoule dans le bloc-batterie 5 tout en contournant les composants du circuit de charge ; et un second flux d'air k2 qui est aspiré par la fenêtre de ventilation 8, passe sur les composants du circuit de charge, et s'écoule dans le bloc-batterie 5 après la fusion avec le premier flux d'air k1.
PCT/JP2017/016969 2016-05-31 2017-04-28 Dispositif de charge WO2017208710A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018520731A JP6835084B2 (ja) 2016-05-31 2017-04-28 充電装置
CN201780033648.0A CN109328422A (zh) 2016-05-31 2017-04-28 充电装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016109137 2016-05-31
JP2016-109137 2016-05-31

Publications (1)

Publication Number Publication Date
WO2017208710A1 true WO2017208710A1 (fr) 2017-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/016969 WO2017208710A1 (fr) 2016-05-31 2017-04-28 Dispositif de charge

Country Status (3)

Country Link
JP (3) JP6835084B2 (fr)
CN (1) CN109328422A (fr)
WO (1) WO2017208710A1 (fr)

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WO2020175010A1 (fr) * 2019-02-28 2020-09-03 工機ホールディングス株式会社 Dispositif chargeur
JP2021078353A (ja) * 2016-05-31 2021-05-20 工機ホールディングス株式会社 充電装置
US11523510B2 (en) 2018-10-17 2022-12-06 Milwaukee Electric Tool Corporation Battery charger including printed circuit board having an AC portion and a DC portion
US11540429B2 (en) 2018-07-30 2022-12-27 Milwaukee Electric Tool Corporation Battery charger
US11670808B2 (en) 2019-12-03 2023-06-06 Milwaukee Electric Tool Corporation Charger and charger system

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Publication number Priority date Publication date Assignee Title
JP2021078353A (ja) * 2016-05-31 2021-05-20 工機ホールディングス株式会社 充電装置
JP7107399B2 (ja) 2016-05-31 2022-07-27 工機ホールディングス株式会社 充電装置
US11540429B2 (en) 2018-07-30 2022-12-27 Milwaukee Electric Tool Corporation Battery charger
US11523510B2 (en) 2018-10-17 2022-12-06 Milwaukee Electric Tool Corporation Battery charger including printed circuit board having an AC portion and a DC portion
US11855468B2 (en) 2018-10-17 2023-12-26 Milwaukee Electric Tool Corporation Battery charger including an isolating member
WO2020175010A1 (fr) * 2019-02-28 2020-09-03 工機ホールディングス株式会社 Dispositif chargeur
JPWO2020175010A1 (ja) * 2019-02-28 2021-12-09 工機ホールディングス株式会社 充電装置
EP3934006A4 (fr) * 2019-02-28 2022-06-15 Koki Holdings Co., Ltd. Dispositif chargeur
JP7107426B2 (ja) 2019-02-28 2022-07-27 工機ホールディングス株式会社 充電装置
US11670808B2 (en) 2019-12-03 2023-06-06 Milwaukee Electric Tool Corporation Charger and charger system
US12015130B2 (en) 2019-12-03 2024-06-18 Milwaukee Electric Tool Corporation Charger and charger system

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JP2021078353A (ja) 2021-05-20
JPWO2017208710A1 (ja) 2019-01-10
JP2022140486A (ja) 2022-09-26
JP7107399B2 (ja) 2022-07-27
CN109328422A (zh) 2019-02-12
JP6835084B2 (ja) 2021-02-24

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