WO2014049926A1 - Bloc-piles et dispositif électrique - Google Patents

Bloc-piles et dispositif électrique Download PDF

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Publication number
WO2014049926A1
WO2014049926A1 PCT/JP2013/004526 JP2013004526W WO2014049926A1 WO 2014049926 A1 WO2014049926 A1 WO 2014049926A1 JP 2013004526 W JP2013004526 W JP 2013004526W WO 2014049926 A1 WO2014049926 A1 WO 2014049926A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing member
battery
battery pack
cover
housing case
Prior art date
Application number
PCT/JP2013/004526
Other languages
English (en)
Inventor
Tetsuhiro Harada
Tomomasa Nishikawa
Original Assignee
Hitachi Koki Co., Ltd.
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 Hitachi Koki Co., Ltd. filed Critical Hitachi Koki Co., Ltd.
Publication of WO2014049926A1 publication Critical patent/WO2014049926A1/fr

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Classifications

    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/278—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery pack attachable/detachable to/from an electric device body and relates to an electric device having the electric device body and the battery pack.
  • Patent Literature 1 describes an electric motor tool as a specific example of the electric device.
  • the electric motor tool has an electric device body and a battery pack.
  • the electric device body has: a housing in which an electric motor is housed; a hammer case fixed at an opening of the housing; and a grip provided continuously from the housing.
  • the battery pack is configured so as to be attachable/detachable to/from the grip.
  • the Patent Literature 1 describes that an insertion port on the grip to which the battery pack is inserted is subjected to a double-layer molding treatment with elastic rubber.
  • the battery pack has a housing case in which a battery cell is housed. Also, the battery pack has a holding member provided inside the housing case. More specifically, the holding member is a circuit board. A battery-side terminal is mounted on the holding member, and the battery-side terminal is connected to the battery cell. Therefore, there is a possibility either that a foreign substance entering the inside of the housing case via a vent hole enters a space between the housing case and the holding member or a foreign substance existing outside the housing case enters the space between the housing case and the holding member.
  • the above-described Patent Literature 1 does not describe that the space between the housing case and the holding member is sealed, and therefore, there is room for improvement in this point.
  • a preferred aim of the present invention is to provide a battery pack and an electric device in which the space between the housing case and the holding member can be sealed.
  • a battery pack of an embodiment is a battery pack in which a battery cell is housed and which is provided with a housing case attachable/detachable to/from an electric device body, and the batter pack has: a holding member provided inside the housing case and holding a battery-side terminal connected to the battery cell; and a sealing member provided inside the housing case and provided between the holding member and the housing case.
  • An electric device of another embodiment is an electric device having: a battery pack with a battery cell housed in a housing case; and an electric device body to/from which the battery pack is attachable/detachable, and the battery pack has: a holding member provided inside the housing case and holding a battery-side terminal connected to the battery cell; and a sealing member provided inside the housing case and provided between the holding member and the housing case.
  • a space between the holding member and the housing case can be sealed.
  • FIG. 1 is a perspective view of an electric motor tool according to an example of an electric device of the present invention
  • FIG. 2 is a perspective view illustrating a battery pack of the present invention
  • FIG. 3 is an exploded perspective view illustrating the battery pack of the present invention
  • FIG. 4 is a plan view of a holder and a circuit board housed in the battery pack of the present invention
  • FIG. 5 is a view of a cover configuring the battery pack of the present invention as viewed from an inner surface
  • FIG. 6 is a front cross-sectional view illustrating an example of a sealing member in the present invention
  • FIG. 7 is a front cross-sectional view illustrating another example of the sealing member in the present invention.
  • FIG. 1 is a perspective view of an electric motor tool according to an example of an electric device of the present invention
  • FIG. 2 is a perspective view illustrating a battery pack of the present invention
  • FIG. 3 is an exploded perspective view illustrating the battery pack of the present invention
  • FIG. 4 is a plan
  • FIG. 8 is a front cross-sectional view illustrating still another example of the sealing member in the present invention.
  • FIG. 9 is a front cross-sectional view illustrating still another example of the sealing member in the present invention.
  • FIG. 10 is a front cross-sectional view illustrating still another example of the sealing member in the present invention.
  • FIG. 11 is a front cross-sectional view illustrating still another example of the sealing member in the present invention.
  • FIG. 12 is a front cross-sectional view illustrating still another example of the sealing member in the present invention.
  • FIG. 1 illustrates a schematic structure of an electric motor tool 10 according to an example of the electric device.
  • the electric motor tool 10 has a tool body 11 and a battery pack 12.
  • the tool body 11 corresponds to an electric device body of the present invention.
  • the battery pack 12 is attachable/detachable to/from the tool body 11.
  • the tool body 11 includes a casing 11a, a grip part 11b, and a mount part 11c.
  • An electric motor 13 is housed inside the casing 11a.
  • the electric motor 13 has an electromagnetic coil to which electric power is supplied.
  • the electric tool 10 is a tool of a cordless type in which a code for supplying electric power is not connected to the electric motor 13.
  • a tip tool 14 is attachable/detachable.
  • the tip tool 14 rotates or reciprocates around an axis line "A". That is, the electric motor tool 10 includes an impact driver, a drill, a driver, a hammer, a hammer drill, and a hammer driver.
  • the casing 11a is connected to one end of the grip part 11b, and the mount part 11c is provided to the other end of the grip part 11b. Inside the grip part 11b, a control board for controlling the electric motor 13 is provided.
  • the mount part 11c has a concave part 11d formed therein, and a plurality of, specifically three tool-side terminals 15 are provided in the concave part 11d. These three tool-side terminals 15 include a positive pole terminal, a negative pole terminal, and a signal terminal.
  • the positive pole terminal and the negative pole terminal are connected to the electromagnetic coil of the electric motor 13 via a control element.
  • the signal terminal is connected to the circuit board for controlling the electric motor 13.
  • the battery pack 12 is attachable/detachable to/from the mount part 11c.
  • the structure of the battery pack 12 is described based on FIGs. 2 and 3.
  • the battery pack 12 has a plurality of battery cells 16, a holder 17, and a housing case 18.
  • the battery cells 16 are secondary batteries that can be repeatedly recharged and discharged.
  • the battery cell 16 includes a lithium-ion battery cell, a nickel hydride battery cell, a lithium-ion polymer battery cell, a nickel-cadmium battery cell, and others.
  • the battery cell 16 has a columnar shape, and two electrodes are provided on both ends of the battery cell 16 in a longitudinal direction. One of the two electrodes is a cathode, and the other is an anode.
  • the holder 17 holds the plurality of battery cells 16 in parallel to each other, and the holder 17 has a role of an insulator for covering the plurality of battery cells 16.
  • the plurality of battery cells 16 may be referred to as a battery cell group 16.
  • the holder 17 has a cylindrical shape in which the battery cell group 16 is housed.
  • the holder 17 may have a structure with an opening at each of both ends or a structure with an opening at one end.
  • восем ⁇ battery cells 16 aligned in two rows one of which has parallel-arranged four battery cells 16 are housed.
  • four electrodes of eight electrodes positioned at one end are connected by one connection member as one set. More specifically, four battery cells 16 vertically and horizontally adjacent to each other are taken as one set, and the anodes of the two battery cells 16 and the cathodes of the two battery cells 16 are connected in series to each other by one connection member.
  • eight electrodes positioned at the other end are connected by three connection members.
  • Four electrodes of the battery cells 16 positioned at the center that is, two anodes and two cathodes thereof are connected in series to each other by one connection member.
  • two anodes positioned at both sides of the four electrodes are connected to each other by one connection member, and two cathodes positioned thereat are connected to each other by one connection member.
  • connection member for electrically connecting the electrodes to each other is made of a conductive metal material.
  • the metal material includes copper, aluminum, a material obtained by plating a rolled steel plate with nickel, and others.
  • the connection member preferably has a plate shape.
  • a surface of each connection member which is opposite to a part in contact with the electrodes is covered with an insulating member 19.
  • a material making the insulating member 19 includes an insulating tape or an insulating sheet using a resin film as a base material, a rubber-like elastic body, a metal plate on whose surface an insulating layer made of a resin material is formed, and others. Note that the opening of the holder 17 or a space between the insulating member 19 and an opening edge of the holder 17 can be covered with a waterproofing sheet member, silicon, clay, or others.
  • a circuit board 20 is mounted on a body part of the holder 17.
  • the circuit board 20 is formed in a flat plate shape made of a non-conductive resin material.
  • the circuit board 20 has a straight-line-shaped first edge 20a and straight-line-shaped second edges 20b continuously formed from both ends of the first edge 20a.
  • the circuit board 20 is viewed in a planar view, the two second edges 20b are placed at the right angle with respect to the first edge 20a, and the two second edges 20b are parallel to each other.
  • the circuit board 20 is provided with third edges 20c continuously formed from the respective two second edges 20b. When the circuit board 20 is viewed in a planar view, the two third edges 20c are parallel to the first edge 20a.
  • the circuit board 20 holds a plurality of battery-side terminals 21. That is, the plurality of battery-side terminals 21 are mounted on the circuit board 20. The plurality of battery-side terminals 21 are placed in an area surrounded by the first edge 20a, the second edges 20b, and the third edges 20c. The plurality of battery-side terminals 21 are placed in a line along the first edge 20a.
  • the circuit board 20 is provided with an electric circuit.
  • Each of the plurality of battery-side terminals 21 is made of a conductive metal material.
  • the plurality of battery-side terminals 21 include a charge positive pole terminal, a discharge positive pole terminal, a charge/discharge negative pole terminal, and four signal terminals.
  • the connection member connecting two positive poles of two battery cells 16 to each other is electrically connected to the charge positive pole terminal and the discharge positive pole terminal via a lead line and an electric circuit.
  • the connection member connecting two negative poles of two battery cells 16 to each other is electrically connected to the charge/discharge negative pole terminal via a lead line and an electric circuit.
  • a board cover 22 is provided to cover a surface of the circuit board 20.
  • the board cover 22 is integrally molded from an insulating material such as a resin material.
  • the board cover 22 is an element that covers the area surrounded by the first edge 20a, the second edges 20b, and the third edges 20c on the surface of the circuit board 20.
  • the board cover 22 is formed in a substantially rectangular shape in a planar view. That is, the board cover 22 has long sides 22b and 22c parallel to each other, and a plurality of slits 22a are provided along the long side 22c. Also, two short sides 22d are provided so as to connect both ends of the long sides 22b and 22c to each other. And, in a state that the board cover 22 is mounted on the circuit board 20, the plurality of battery-side terminals 21 are inserted into the slits 22a, respectively.
  • the housing case 18 is an element that houses the holder 17 holding the plurality of battery cells 16.
  • the housing case 18 has a case body 23 and a cover 24 for closing an opening 23a of the case body 23. All of the holder 17, the case body 23, and the cover 24 are made of a non-conductive material, and they are formed separately from each other.
  • the non-conductive material includes a resin material.
  • the case body 23 has a bottom plate 23b and a side wall 23c formed continuously from an outer peripheral edge of the bottom plate 23b. The side wall 23c is provided with a vent hole 23d through which the inside and outside the housing case 18 are communicated with each other.
  • the cover 24 has a plate part 25 and a mount part 26.
  • the plate part 25 has a flat plate shape substantially in parallel to the bottom plate 23b in a state that the cover 24 is mounted on the case body 23.
  • the mount part 26 is protruded upward from the plate part 25.
  • a guide rail 27 used when the battery pack 12 is mounted on the tool body 11 is provided on each of both sides of the mount part 26 . These two guide rails 27 are placed in parallel to each other. Between these two guide rails 27 on the mount part 26, a plurality of terminal insertion holes 28 are provided. The plurality of terminal insertion holes 28 are placed in parallel to the guide rail 27.
  • the plurality of terminal insertion holes 28 penetrate from the inside toward the outside of the housing case 18 in a slit form. Also, the plurality of terminal insertion holes 28 are placed in parallel to the guide rails 27. Further, the plurality of terminal insertion holes 28 are placed in a line between one guide rail 27 and the other guide rail 27. Still further, when the housing case 18 is viewed in a planar view in the state that the cover 24 is mounted on the case body 23, the plurality of terminal insertion holes 28 are placed right above the plurality of battery-side terminals 21.
  • a window 29 is provided at a boundary part between the mount part 26 and the plate part 25.
  • the window 29 is linearly extended in a direction at a substantially right angle with respect to the two guide rails 27.
  • the window 29 is connected to the plurality of terminal insertion holes 28.
  • the plurality of battery-side terminals 21 are inserted into the plurality of terminal insertion holes 28 in a state that the cover 24 is mounted on the case body 23.
  • the cover 24 is provided with a vent hole 30 through which the inside and the outside of the housing case 18 are communicated with each other.
  • the vent hole 30 is provided on a side opposite to the plate part 25 across the plurality of terminal insertion holes 28.
  • filters for separately covering the vent holes 23d and 30 are mounted on an inner surface of the housing case 18. These filters are made of a mesh material with aeration property.
  • a sealing member 31 is provided inside the housing case 18.
  • the sealing member 31 is an element that seals a space between the cover 24 and the circuit board 20 as a holding member for holding the battery-side terminals 21.
  • the sealing member 31 is also functioned as an element that seals a space between the cover 24 and the board cover 22.
  • the sealing member 31 is integrally made of a material such as a rubber-like elastic body or silicon. As illustrated in FIG. 4, when the circuit board 20 is viewed in a planar view, the sealing member 31 is formed in an annular shape, that is, an endless shape, so as to surround the plurality of battery-side terminals 21. When the circuit board 20 is viewed in a planar view, the sealing member 31 is formed in a substantially rectangular shape.
  • the sealing member 31 is mounted along the long side 22b and the short sides 22d of the board cover 22 and is also mounted along the first edge 20a of the circuit board 20. Further, a part of the sealing member 31 is also linearly mounted between the two third edges 20c on the front surface of the circuit board 20.
  • the sealing member 31 can be fixed to the circuit board 20 and the board cover 22 with an adhesive.
  • the sealing member 31 is formed by applying silicon with fluidity over the circuit board 20 and the board cover 22, and then, adhering the silicon onto the circuit board 20 and the board cover 22 in the course of solidification of the silicon.
  • the cover 24 has a structure so as to be in contact with the sealing member 31 in a state that the cover 24 is fixed to the case body 23 so as to cover the opening 23a.
  • the structure of the contact with the sealing member 31 includes: an edge 25a along the window 29 in the plate part 25; two ribs 32 provided on both sides of the plurality of terminal insertion holes 28; and a rib 33 provided in parallel to the edge 25a.
  • the ribs 32 and 33 are protruded toward the case body 23 from the inner surface of the cover 24, that is, from an inner surface of the mount part 26. That is, the ribs 32 and 33 are protruded downwardly toward the case body 23.
  • the words “upward” and “downward” mean upper and lower directions in a state that the bottom plate 23b of the case body 23 is positioned at the lowest.
  • the ribs 32 and 33 are a structure corresponding to a protruding part in the present invention.
  • the two ribs 32 are at a substantially right angle with respect to the edge 25a and the rib 33.
  • the edge 25a and the ribs 32 and 33 are provided annularly and in a rectangular shape so as to surround the plurality of terminal insertion holes 28.
  • an operation button 40 is mounted on the cover 24.
  • the operation button 40 is rotatable with taking a support shaft 41 as a pivot point, and the operation button 40 is provided with a latch 42.
  • the cover 24 is provided with a hole 43 so that the latch 42 is partially exposed from the hole 43 to the outside of the cover 24 when the cover 24 is mounted on the case body 23.
  • the mount part 11c is provided with a claw so that the latch 42 is engaged with the claw.
  • the latch 42 is removed from the claw by pressing the operation button 40 in the state that the battery pack 12 is attached to the mount part 11c of the tool body 11. Then, when the battery pack 12 and the tool body 11 are relatively moved in a direction opposite to the direction above, the battery pack 12 can be detached from the mount part 11c.
  • the battery pack 12 can be attached to a charger.
  • the charger is a device that charges the battery cells 16 with electric power from an alternating-current power supply.
  • the charger is provided with a charger-side terminal and a terminal cover for covering the charger-side terminal. And, when the terminal cover is inserted into the window 29 of the battery pack 12, the charger-side terminal and the battery-side terminals are connected to each other.
  • the charger has a cooling fan. When the battery pack 12 is attached to the charger and the cooling fan is rotated, wind formed by the cooling fan enters the inside of the housing case 18 through the vent hole 30, and then, is exhausted from the vent hole 23d. Therefore, in the battery pack 12, the inside of the housing case 18 is cooled when the battery cells 16 are charged.
  • the board cover 22 prevents contact of the foreign substances with the circuit board 20. Also, if the battery pack 12 has a waterproofing structure in which the opening of the holder 17 or a space between the insulating member 19 and the opening edge of the holder 17 is covered with a waterproofing sheet member, silicon, clay, or others, even if water enters the inside of the housing case 18, a short circuit between the battery cells 16, electrode corrosion, and others can be prevented.
  • the battery pack 12 of the present embodiment is provided with the sealing member 31 that seals the space between the circuit board 20 and the cover 24 and the space between the board cover 22 and the cover 24. And, when the opening 23a of the housing case 18 is covered with the cover 24 and when the housing case 18 and the cover 24 are fixed to each other as illustrated in FIG. 2, the sealing member 31 is in contact with the cover 24 as illustrated in FIG. 6.
  • the sealing member 31 is placed below the plate part 25 and below the mount part 26.
  • the mount part 26 is provided with the ribs 32 and 33 protruding downwardly toward the sealing member 31. Therefore, the sealing member 31 is in contact with the ribs 32 and 33 and also is in contact with the inner surface of the plate part 25 along the edge 25a. That is, the sealing member 31 forms a substantially-rectangular sealing surface in a planar view of the circuit board 20.
  • the foreign substances inside the housing case 18 can be prevented from going through the space between the circuit board 20 and the cover 24 and the space between the board cover 22 and the cover 24 to the space where the battery-side terminals 21 are placed. Therefore, the short circuit between the battery-side terminals 21 can be prevented. Also, when the foreign substances are water, the water can be prevented from being in contact with the battery-side terminals 21 to corrode the battery-side terminals 21.
  • the electric motor tool 10 can prevent the short circuit between the tool-side terminals 15 and the corrosion of the tool-side terminals 15.
  • the sealing member 31 is placed below the plate part 25 and the mount part 26. Therefore, when the battery pack 12 is attached to the mount part 11c of the tool body 11, the sealing member 31 can be prevented from being in contact with the mount part 11c. Therefore, peeling off of the sealing member 31 due to the contact with the mount part 11c can be prevented. Further, the sealing member 31 is not directly attached to the battery-side terminals 21. Therefore, when the battery pack 12 is attached to the tool body 11, increase in contact resistance between the battery-side terminals 21 and the tool-side terminals 15 can be also prevented. Still further, by contacting the sealing member 31 with the ribs 32 and 33 protruding downward from the mount part 26 and with the inner surface of the plate part 25, a sealing surface is formed.
  • the space between the circuit board 20 and the housing case 18 and the space between the board cover 22 and the housing case 18 are sealed, so that the entering of the foreign substances into the housing case 18 and the adhesion of the foreign substances from the inside of the housing case 18 onto the battery-side terminals 21 can be prevented.
  • the ribs 32 and 33 protrude down to a position equal to or lower than the inner surface of the plate part 25. Therefore, an amount of the protrusion of the sealing member 31 in the up-to-down direction of the housing case 18 can be suppressed.
  • the amount of the protrusion of the sealing member 31 is represented by a length in the up-to-down direction in FIG. 6. Therefore, buckled deformation of the sealing member 31 can be prevented in the state that the sealing member 31 is in contact with the inner surface of the cover 24, that is, with the ribs 32 and 33, so that high sealing capability can be maintained.
  • the housing case 18 is configured to be divided in the up-to-down direction as illustrated in FIG. 3.
  • the length of the housing case 18 in the up-to-down direction can be configured to be longer than distances from an upper surface of the circuit board 20 to tips of the ribs 32 and 33.
  • the cover 24 is attached to the case body 23.
  • the long side 22b is formed by partially bending the board cover 22 so as to cover the first edge 20a of the circuit board 20.
  • the sealing member 31 is partially attached to the long side 22d, and the sealing member 31 is not attached to the first edge 20a.
  • Other shape and mount structure of the sealing member 31 are the same as the shape and mount structure of the sealing member 31 in FIGs. 4 and 6.
  • the sealing member 31 illustrated in FIG. 7 is contact with the cover 24 to form a sealing surface as similar to the sealing member 31 illustrated in FIGs. 4 and 6, and effects similar to those of the sealing member 31 of FIGs. 4 and 6 can be obtained. Also, the sealing member 31 illustrated in FIG. 7 is configured to be partially mounted on the long side 22b of the board cover 22 which is a single member, and is not configured to be mounted across both the long side 22b and the first edge 20a. Therefore, flatness of the mount surface of the sealing member 31 is easily ensured, so that the sealing member 31 is easily mounted.
  • the board cover 22 is partially bent in a crank shape in a thickness direction so as to provide a support part 22e.
  • the support part 22e covers the first edge 20a of the circuit board 20, so that the long side 22b is formed with the support part 22e.
  • the sealing member 31 is partially mounted on a surface of the support part 22e, and the sealing member 31 is not mounted on the first edge 20a.
  • Other shape and mount structure of the sealing member 31 illustrated in FIG. 8 are the same as the shape and mount structure of the sealing member 31 in FIGs. 4 and 6.
  • the sealing member 31 illustrated in FIG. 8 is in contact with the cover 24 to form a sealing surface as similar to the sealing member 31 illustrated in FIGs. 4 and 6, and effects similar to those of the sealing member 31 in FIGs. 4 and 6 can be obtained. Also, the sealing member 31 illustrated in FIG. 8 is not mounted across both of the long side 22b and the first edge 20a. Therefore, flatness of the mount surface of the sealing member 31 is easily ensured, so that the sealing member 31 is easily mounted. Also, since the sealing member 31 is partially provided on the surface of the support part 22e, the sealing member 31 is easily mounted.
  • the sealing member 31 is partially mounted on the surface of the support part 22e. That is, when the cover 24 is fixed to the case body 23, the sealing member 31 is sandwiched between the support part 22e and the plate part 25. Therefore, reaction force caused when the sealing member 31 is in contact with the plate part 25 can be received by the support part 22e. Therefore, a contact pressure per unit area in the sealing surface can be increased as high as possible, so that the sealing ability of the sealing member 31.
  • the sealing member 31 in FIG. 9 also has the support part 22e, and is provided with a stand-up part 22f continuously formed from the support part 22e.
  • a concave part 22g is formed by the support part 22e and the stand-up part 22f.
  • the long side 22b is formed by the concave part 22e, and the concave part 22g is provided along the long side 22b.
  • the sealing member 31 is partially placed in the concave part 22g.
  • An upper surface of the sealing member 31 is positioned on the same plane as the surface of the board cover 22. Further, the plate part 25 is provided with a rib 25b along the edge 25a. The rib 25b is linearly provided, and the rib 25b is in contact with the sealing member 31 to form a sealing surface.
  • the sealing member 31 in FIG. 9 is not mounted on the first edge 20a, either.
  • Other shape and mount structure of the sealing member 31 illustrated in FIG. 9 are the same as the shape and mount structure of the sealing member 31 in FIGs. 4, 6 and 8.
  • the sealing member 31 illustrated in FIG. 9 is in contact with the cover 24 to form a sealing surface as similar to the sealing member 31 illustrated in FIGs. 4, 6, and 8, and effects similar to those the sealing member 31 in FIGs. 4, 6, and 8 can be obtained. Also, since the sealing member 31 illustrated in FIG. 9 is mounted on the concave part 22g of the board cover 22, the sealing member 31 is easily mounted in the thickness direction and the planar direction of the board cover 22, and holding force for the sealing member 31 is strong. Therefore, reaction force caused when the sealing member 31 is in contact with the plate part 25 can be received by the support part 22e. Therefore, a contact pressure per unit area in the sealing surface can be increased as high as possible, so that the sealing ability of the sealing member 31 is increased.
  • the sealing member 31 since the sealing member 31 is partially provided inside the concave part 22g, the sealing member 31 partially has fixing force in a planar direction of the board cover 22, so that the sealing ability can be improved.
  • the sealing member 31 may be configured to partially protrude outside the concave part 22g and contact the sealing member 31 with the inner surface of the plate part 25 without providing the rib 25b in the plate part 25.
  • the sealing member 31 illustrated in FIG. 10 does not have a cut at its end in a length direction. That is, the slit 22a illustrated in FIG. 10 is a hole penetrating through the board cover 22 in a thickness direction. Also, the board cover 22 has a protruding part 35 provided along the long side 22c. The protruding part 35 protrudes toward the mount part 26 in the thickness direction of the board cover 22.
  • the sealing member 31 is partially provided between the slit 22a on the surface of the board cover 22 and the protruding part 35.
  • the sealing member 31 illustrated in FIG. 10 effects similar to those in FIGs. 4, 6, and 7 can be obtained.
  • the silicon with fluidity is applied on the board cover 22 and when the silicon is solidified to form, the silicon before the solidification is contact with the protruding part 35. Therefore, in the battery pack 12, the silicon does not flow and not deform, and the shape of the sealing member 31 is a target shape.
  • FIG. 11 The same components of the sealing member 31 illustrated in FIG. 11 as those of the sealing member 31 in FIGs. 4, 6, 7, and 10 are denoted by the same reference symbols as those in FIGs. 4, 6, 7, and 10.
  • the board cover 22 illustrated in FIG. 11 is not provided with the protruding part 35 described above.
  • the board cover 22 illustrated in FIG. 11 has a concave part 36 provided along the long side 22c. And, the sealing member 31 is partially provided inside the concave part 36.
  • the sealing member 31 illustrated in FIG. 11 may be configured to partially protrude outside the concave part 36 and contact the sealing member 31 with the inner surface of the mount part 26 without reducing the amount of the protrusion of the rib 33 or without providing the rib 33.
  • FIG. 12 illustrates still another example of the sealing member 31.
  • the board cover 22 is not mounted on the circuit board 20 illustrated in FIG. 12.
  • the sealing member 31 is annularly mounted over the first edge 20a, the short sides 22d illustrated in FIG. 3, and the surface of the circuit board 20.
  • the sealing member 31 is formed in a substantially rectangular shape so as to surround the plurality of battery-side terminals 21.
  • the cover 24 is fixed to the case body 23
  • the sealing member 31 illustrated in FIG. 12 is in contact with the inner surface of the cover 24 to form a sealing surface. Therefore, even if the foreign substances exist inside the housing case 18, the foreign substances can be prevented from going through the space between the circuit board 20 and the cover 24 to enter the space where the plurality of battery-side terminals 21 are provided.
  • the sealing member 31 can be used in order to prevent the foreign substances existing outside the housing case 18 from going through the space between the cover 24 and the circuit board 20 to enter the inside of the housing case 18.
  • the battery pack of the present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the present invention.
  • the battery pack and the electric device of the present invention include a structure in which the sealing member 31 is fixed to the board cover 22 or the circuit board 20 and a structure in which the sealing member is mounted on the inner surface of the cover.
  • the sealing member is in contact with at least either the circuit board or the board cover to form the sealing surface in the state that the cover is attached to the case body, so that effects similar to those of the embodiment described above can be obtained.
  • the sealing member of the present invention is in contact with the cover, the circuit board, or the board cover to be elastically deformed, so that the sealing surface is formed. Therefore, in order to increase the contact pressure per unit area on the sealing surface, design change such as formation of a wedge-shaped lip part in the sealing member and formation of a convex part as a counterpart member contacting with the sealing member can be appropriately performed.
  • the battery pack of the present invention includes a structure that houses battery cells less than eight or a structure that houses nine or more battery cells.
  • the electric devices to/from the battery pack of the present invention is attached/detached includes, in addition to the above-described electric power tool, the electric device of the present invention includes a grinder, a sander, a nail driver, a screwdriver, a tacker, a dust collector, a blower, a pump, a high-pressure washer, a chainsaw, a grass cutter, a hedge trimmer, a cultivator, and others.
  • the electric devices of the present invention include a device in which rotary motion caused by rotating an electric motor by electric power of the battery pack is converted into at least reciprocating motion or rotary motion of an operating member.
  • the electric devices of the present invention include a torchlight and others. That is, the electric devices of the present invention include a lighting device in which electric energy which is supplied from the battery pack is converted into optical energy.
  • the present invention can be used for a battery back attachable/detachable to/from an electric device body. Also, the present invention can be used for an electric device having the electric device body and a battery pack.

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  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Portable Power Tools In General (AREA)

Abstract

La présente invention a trait à un bloc-piles permettant d'assurer l'étanchéité d'un espace entre un boîtier de logement et une carte de circuit imprimé. Dans un bloc-piles qui reçoit un élément de batterie et qui est équipé d'un boîtier de logement qui peut être fixé sur un corps d'outil et détaché de ce dernier, le bloc-piles est doté : d'une carte de circuit imprimé (20) qui est prévue à l'intérieur du boîtier de logement et qui supporte une borne côté batterie (21) qui est connectée à l'élément de batterie ; d'un trou d'insertion de borne (28) qui est prévu de manière à ce que l'intérieur et l'extérieur du boîtier de logement communiquent l'un avec l'autre et dans lequel la borne côté batterie (21) est insérée ; et d'un élément d'étanchéité qui est prévu à l'intérieur du boîtier de logement et entre la carte de circuit imprimé (20) et un couvercle (24) du boîtier de logement.
PCT/JP2013/004526 2012-09-28 2013-07-25 Bloc-piles et dispositif électrique WO2014049926A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012216351A JP2014072006A (ja) 2012-09-28 2012-09-28 電池パック及び電気機器
JP2012-216351 2012-09-28

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Publication Number Publication Date
WO2014049926A1 true WO2014049926A1 (fr) 2014-04-03

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JP (1) JP2014072006A (fr)
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Cited By (6)

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EP3340335A1 (fr) * 2016-12-20 2018-06-27 Kabushiki Kaisha Yaskawa Denki Boîtier de batterie
US10388921B2 (en) 2015-07-22 2019-08-20 Tti (Macao Commercial Offshore) Limited Latching mechanism for a battery pack
CN111710805A (zh) * 2019-03-17 2020-09-25 宁波良业电器有限公司 一种电力工具的高效供电电池包
USD922938S1 (en) 2018-05-21 2021-06-22 Techtronic Floor Care Technology Limited Battery
EP3890100A1 (fr) * 2020-04-01 2021-10-06 Einhell Germany AG Ensemble batterie pour un appareil électrique
US11411278B2 (en) 2019-03-01 2022-08-09 Milwaukee Electric Tool Corporation Power tool and battery pack for use with the same

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JP2014197515A (ja) * 2013-03-29 2014-10-16 日立工機株式会社 電池パック及び電気機器
JP6284709B2 (ja) * 2013-04-05 2018-02-28 株式会社マキタ 電動工具用電池パック
EP3709389B1 (fr) * 2015-04-03 2024-06-05 ConMed Corporation Procédé de commande de moteur d'outil de pièce à main chirurgical, motorisé et alimenté par batterie supportant l'autoclave
EP3686950A4 (fr) * 2017-09-22 2021-06-02 Positec Power Tools (Suzhou) Co., Ltd Bloc-batterie et ensemble outil électrique

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JP2002254356A (ja) 2001-03-02 2002-09-10 Hitachi Koki Co Ltd 電動工具
EP1411565A1 (fr) * 2001-07-25 2004-04-21 Sony Corporation Ensemble borne et partie a fixer
WO2009057809A1 (fr) * 2007-10-29 2009-05-07 Hitachi Koki Co., Ltd. Bloc-pile et outil électrique muni de celui-ci
EP2388848A1 (fr) * 2006-09-07 2011-11-23 Hitachi Koki Co., Ltd. Bloc batterie et outil motorisé lýutilisant

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Publication number Priority date Publication date Assignee Title
JP2002254356A (ja) 2001-03-02 2002-09-10 Hitachi Koki Co Ltd 電動工具
EP1411565A1 (fr) * 2001-07-25 2004-04-21 Sony Corporation Ensemble borne et partie a fixer
EP2388848A1 (fr) * 2006-09-07 2011-11-23 Hitachi Koki Co., Ltd. Bloc batterie et outil motorisé lýutilisant
WO2009057809A1 (fr) * 2007-10-29 2009-05-07 Hitachi Koki Co., Ltd. Bloc-pile et outil électrique muni de celui-ci

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10388921B2 (en) 2015-07-22 2019-08-20 Tti (Macao Commercial Offshore) Limited Latching mechanism for a battery pack
EP3340335A1 (fr) * 2016-12-20 2018-06-27 Kabushiki Kaisha Yaskawa Denki Boîtier de batterie
USD922938S1 (en) 2018-05-21 2021-06-22 Techtronic Floor Care Technology Limited Battery
USD973017S1 (en) 2018-05-21 2022-12-20 Techtronic Floor Care Technology Limited Battery
US11411278B2 (en) 2019-03-01 2022-08-09 Milwaukee Electric Tool Corporation Power tool and battery pack for use with the same
CN111710805A (zh) * 2019-03-17 2020-09-25 宁波良业电器有限公司 一种电力工具的高效供电电池包
EP3890100A1 (fr) * 2020-04-01 2021-10-06 Einhell Germany AG Ensemble batterie pour un appareil électrique
DE102020109105A1 (de) 2020-04-01 2021-10-07 Einhell Germany Ag Akkupack für ein Elektrogerät
AU2021201701B2 (en) * 2020-04-01 2023-01-12 Einhell Germany Ag Battery pack for an electrical appliance
AU2021201701C1 (en) * 2020-04-01 2023-05-11 Einhell Germany Ag Battery pack for an electrical appliance

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