WO2022070766A1 - 電気機器システム及び電池パック - Google Patents

電気機器システム及び電池パック Download PDF

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Publication number
WO2022070766A1
WO2022070766A1 PCT/JP2021/032425 JP2021032425W WO2022070766A1 WO 2022070766 A1 WO2022070766 A1 WO 2022070766A1 JP 2021032425 W JP2021032425 W JP 2021032425W WO 2022070766 A1 WO2022070766 A1 WO 2022070766A1
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WO
WIPO (PCT)
Prior art keywords
voltage
terminal
battery pack
medium
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/032425
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
勇人 山口
智雅 西河
智 松野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
Original Assignee
Koki Holdings 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 Koki Holdings Co Ltd filed Critical Koki Holdings Co Ltd
Priority to EP21875068.5A priority Critical patent/EP4224606A4/en
Priority to US18/015,328 priority patent/US20230275295A1/en
Priority to CN202180048863.4A priority patent/CN115836434A/zh
Priority to JP2022553712A priority patent/JP7548322B2/ja
Publication of WO2022070766A1 publication Critical patent/WO2022070766A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • H01M50/269—Mechanical means for varying the arrangement of batteries or cells for different uses, e.g. for changing the number of batteries or for switching between series and parallel wiring
    • 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
    • H01M50/204—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
    • H01M50/244—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
    • H01M50/247—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
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
    • H02J7/575—Parallel/serial switching of connection of batteries to charge or load circuit
    • 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
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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 an electric device system in which a plurality of battery packs are attached to any of a plurality of electric devices and operated.
  • Electric devices such as electric tools are now driven by battery packs using secondary batteries such as lithium-ion batteries, and electric devices are becoming cordless.
  • an electric device including a voltage switching type battery pack in which the output voltage can be switched and shared between electric devices having different voltages, and an electric device main body configured to use such a voltage switching battery pack.
  • the system has also been put into practical use.
  • the voltage switching type battery pack described in Patent Document 1 is very convenient because the output voltage can be automatically switched only by attaching it to the corresponding electric device main body.
  • a voltage switching type battery pack if a voltage switching type battery pack capable of outputting a higher voltage or a voltage switching battery pack capable of outputting a lower voltage can be newly added to the electric equipment system, the user will be widely prepared and different. It is thought that it will be more convenient because the voltage switching type battery pack can be used properly according to the application. It is possible to make a high-voltage electric device by providing a plurality of battery pack mounting portions so that a plurality of battery packs can be mounted, but it is complicated because it is necessary to handle a plurality of battery packs together. .. Further, since there are a plurality of battery pack mounting portions, the battery pack mounting portion becomes large and difficult to handle.
  • the present invention has been made in view of the above background, and an object of the present invention is to provide an electric device system corresponding to a wide range of voltages. Another object of the present invention is to provide an electrical equipment system including a battery pack capable of supporting a voltage different from the voltage of the existing voltage switching type battery pack while maintaining compatibility with the existing voltage switching type battery pack. To provide. Still another object of the present invention is to provide an electric device system using a three-voltage battery pack capable of outputting three voltages of low voltage, medium voltage, and high voltage.
  • a low / medium voltage battery pack capable of outputting low voltage or medium voltage
  • a medium / high voltage battery pack capable of outputting medium voltage or high voltage
  • a low / medium voltage battery pack capable of outputting medium voltage or high voltage
  • a low-voltage device body that is connected to and configured to receive a low-voltage supply
  • a medium-voltage device body that is connected to a low / medium-voltage battery pack and a medium / high-voltage battery pack and is configured to receive a medium-voltage supply.
  • An electrical equipment system is realized that has a high voltage equipment body that is connected to a medium / high voltage battery pack and configured to receive a high voltage supply.
  • the low / medium voltage battery pack and the medium / high voltage battery pack of the electric equipment system each have a plurality of cell units
  • the medium voltage equipment main body has a plurality of the battery packs when connected to the low / medium voltage battery pack. It has a medium-voltage series terminal for connecting cell units in series, and a medium-voltage parallel terminal for connecting a plurality of cell units of the battery pack in parallel when connected to a medium / high voltage battery pack.
  • the medium voltage device body When the medium voltage device body is connected to the medium / high voltage battery pack, the medium voltage series terminals are not connected to any of the terminals.
  • the high voltage device main body has a high voltage series terminal for connecting a plurality of cell units of the battery pack in series when connected to the medium / high voltage battery pack.
  • a medium / high voltage battery pack is a pair of first output terminals connected to one positive electrode and a negative electrode of a plurality of cell units, and a plurality of cell units. It has a pair of second output terminals connected to another one positive electrode and a negative electrode, and the high voltage device main body is connected to one of the positive electrode and the negative electrode of the pair of first output terminals.
  • the high voltage series terminal has a pair of input terminals and a second input terminal connected to the other of the positive electrode and the negative electrode of the pair of second output terminals, and the high voltage series terminal is a positive electrode and a negative electrode of the pair of first output terminals. And one of the positive and negative electrodes of the pair of second output terminals.
  • the medium / high voltage battery pack is connected to a substrate arranged above the plurality of cell units and one positive electrode and a negative electrode of the plurality of cell units extending upward from the substrate. It has a pair of first output terminals and a pair of second output terminals extending upward from the substrate and connected to another positive electrode and a negative electrode of a plurality of cell units, and a pair of first outputs.
  • Each of the terminal and the pair of second output terminals has a connection portion connected to the input terminal of the medium voltage device main body and an avoidance portion between the connection portion and the board to avoid the medium voltage series terminal. ..
  • a battery pack having a plurality of cell units and output terminals connected to each of the plurality of cell units, the three voltages capable of outputting low / medium / voltage.
  • One of the battery pack and the low / medium voltage battery pack capable of outputting low / medium voltage can be connected to the trivoltage battery pack, and the high voltage is supplied from the connected trivoltage battery pack. It is configured to receive medium voltage from the connected high voltage device body and the tri-voltage battery pack or low / medium voltage battery pack that can be connected and connected to the tri-voltage battery pack or low / medium voltage battery pack battery pack.
  • a low voltage configured to receive low voltage from a tri-voltage battery pack or a low / medium voltage battery pack to which a tri-voltage battery pack or a low / medium voltage battery pack can be connected and connected to the main body of the medium voltage device.
  • the main body of the device and the electrical device system provided with the device are configured.
  • the medium voltage device main unit is connected to a part of the output terminal when connected to the three-voltage battery pack, and multiple cell units are connected in series, and one of the output terminals when connected to the low / medium voltage battery pack. It has a medium voltage series terminal connected to a unit and configured to connect all of a plurality of cell units in series.
  • the medium voltage device main unit when connected to a three-voltage battery pack, it is connected to an output terminal different from a part of the output terminal, and multiple cell units are connected in parallel to connect to the low / medium voltage battery pack. It has a medium voltage parallel terminal configured to be connected to an output terminal other than a part of the output terminal when it is used.
  • a medium / high voltage battery pack having a plurality of cell units and output terminals connected to each of the plurality of cell units and capable of outputting medium voltage and high voltage.
  • the medium voltage series terminal is configured not to be connected to the output terminal
  • the medium voltage parallel terminal is connected to the output terminal to multiple cell units. Are configured to be connected in parallel.
  • a three-voltage battery pack capable of outputting low voltage, medium voltage and high voltage
  • a two-voltage battery pack capable of outputting any two of low voltage, medium voltage and high voltage
  • a one-voltage battery pack that can output one of low voltage, medium voltage, and high voltage
  • a three-voltage battery pack a two-voltage battery pack that can output high voltage, or one voltage that can output high voltage
  • a high-voltage device that is connected to the battery pack and configured to receive high-voltage supply, and a three-voltage battery pack and a two-voltage battery pack that can output medium voltage or a one-voltage battery pack that can output medium voltage.
  • An electrical equipment system comprising a low voltage equipment body configured to receive a low voltage supply is provided.
  • the three-voltage battery pack and the two-voltage battery pack each have a plurality of cell units
  • the medium-voltage device main body is connected to the three-voltage battery pack or has a medium voltage and a high voltage.
  • some of the multiple cell units of the battery pack are connected in series, and when connected to a dual voltage battery pack capable of outputting low voltage and medium voltage.
  • a medium-voltage series terminal that connects multiple cell units of the battery pack in series, and the battery when connected to a three-voltage battery pack or a two-voltage battery pack capable of outputting medium voltage and high voltage.
  • Medium voltage parallel terminal that connects a part of multiple cell units of the pack in parallel and connects multiple cell units of the battery pack in parallel when connected to a dual voltage battery pack that can output low voltage and medium voltage. And have. Further, when the high voltage device main body is connected to a three-voltage battery pack or a two-voltage battery pack capable of outputting medium voltage and high voltage, a high voltage device that connects a plurality of cell units of the battery pack in series is connected. It has a voltage series terminal.
  • the present invention has a first plurality of cell units, and the output voltage can be switched between medium voltage and high voltage according to the connection state of the plurality of cell units, and the high voltage device main body.
  • a medium / high voltage battery pack that can be connected to the main body of the medium voltage device and the first slot into which the power supply terminal of the high voltage device main body and the main body of the medium voltage device can be inserted is connected to the main body of the high voltage device.
  • It has a second slot into which none of the terminals of the high voltage device main body is inserted, and the second slot is a short bar provided in the medium voltage device main body when connected to the medium voltage device main body.
  • a short that connects a second plurality of cell units in series when the medium voltage device main unit is connected to a low / medium voltage battery pack that has two multiple cell units and can switch the output voltage between low voltage and medium voltage.
  • the bar was configured to be inserted.
  • an electric device system corresponding to a wide range of voltages. More specifically, an electrical equipment system including a voltage-switching battery pack that can handle a voltage different from the voltage of the existing voltage-switching battery pack while maintaining compatibility with the existing voltage-switching battery pack. Can be provided. Further, it is possible to provide an electric device system using a three-voltage battery pack capable of outputting three voltages of low voltage, medium voltage, and high voltage. For example, since it is possible to further provide a compatible medium / high voltage compatible battery pack to the conventional low / medium voltage compatible battery pack, two battery packs can be used as a main body of an electric device having three voltages. Can be made to correspond to.
  • one battery pack can be used for three voltage electric main bodies. At this time, no special operation for switching the voltage of the battery pack is required, and the output voltage can be switched to an appropriate value simply by attaching it to the corresponding electric device main body, so that the battery pack can be easily handled.
  • the size of the housing of the high-voltage device body can be suppressed, it is possible to provide an electric device that is easy to handle. In addition, it is possible to provide an electric device system that suppresses the increase in size of a voltage switching type battery pack.
  • FIG. 2 is a perspective view of the low voltage battery pack 101 of FIG. 2 as viewed from another angle. It is a perspective view which shows the appearance of the low / medium voltage battery pack 201 of FIG. It is a perspective view which shows the appearance of the middle / high voltage battery pack 301 of FIG.
  • A) is a connection circuit diagram between the low / medium voltage battery pack 201 and the low voltage device main body 1
  • (B) is a connection circuit diagram between the low / medium voltage battery pack 201 and the medium voltage device main body 31.
  • (A) is a figure in which the terminal part 15 and the connection terminal group 260 are separated.
  • (B) is a state in which the terminal portion 15 and the connection terminal group 260 are fitted together.
  • (A) is a figure which separates the terminal part 45 and the connection terminal group 260.
  • (B) is a state in which the terminal portion 45 and the connection terminal group 260 are fitted to each other.
  • (A) is a connection circuit diagram of the medium voltage device main body 31 and the medium / high voltage battery pack 301
  • (B) is a connection circuit diagram of the high voltage device main body 61 and the medium / high voltage battery pack 301. It is a figure for demonstrating the connection state of the terminal part 45 of a medium voltage apparatus main body 31 and the connection terminal group 360 of a medium / high voltage battery pack 301
  • (A) is a figure in which the terminal part 45 and the connection terminal group 360 are separated.
  • (B) is a state in which the terminal portion 45 and the connection terminal group 360 are fitted.
  • FIG. 1 It is a figure for demonstrating the connection state of the terminal part 75 of a high voltage apparatus main body 61, and the connection terminal group 360 of a medium / high voltage battery pack 301, and (A) is a figure in which the terminal part 75 and the connection terminal group 360 are separated.
  • (B) is the same diagram as in (A), and is a diagram showing the shape of the terminal portion 75 excluding the resin portion.
  • (A) is a perspective view of the terminal portion 75 of FIG.
  • connection terminal group 360 is viewed from another direction (at the time of fitting), and (B) is a portion of the positive electrode input terminal 82 and the terminal portion 89b of the short bar 89. It is an enlarged view, and (C) is a view of the positive electrode terminal 362, 372 portion of (A) seen from the right side.
  • (A) is a side view showing the shape of the terminal portions 15, 45, 75, and (B) summarizes the arrangement status of the power terminals (positive electrode input terminal and negative electrode input terminal) in the terminal portions 15, 45, 75. It is a comparison table.
  • (A) is a connection circuit diagram between the medium voltage device main body 31 and the medium / high voltage battery pack 501 according to the second embodiment of the present invention
  • (B) is the high voltage device main body 461 and the medium / high voltage. It is a connection circuit diagram with a battery pack 501.
  • It is a figure (No. 1) for demonstrating the connection state of the terminal part 45 of the medium voltage apparatus main body 31 and the connection terminal group 560 of the medium / high voltage battery pack 501 which concerns on 2nd Embodiment, (A).
  • the terminal portion 45 and the connection terminal group 560 are separated from each other, and (B) is a state in which the terminal portion 45 and the connection terminal group 560 are fitted together. It is a figure (No.
  • 21 is a diagram showing a connection terminal group of the three-voltage battery pack 701, FIG.
  • FIG. 21A is a perspective view of the circuit board 730 and the connection terminal group 740 as a whole
  • FIG. 21B is a perspective view of a large terminal component 721.
  • (C) is a perspective view of the small terminal component 726.
  • (A) is a connection circuit diagram between the three-voltage battery pack 701 and the low-voltage device main body 1
  • (B) is a connection circuit diagram between the three-voltage battery pack 701 and the medium-voltage device main body 31.
  • A) is a connection circuit diagram of the three-voltage battery pack 701 and the high-voltage device main body 601 according to the third embodiment of the present invention
  • (B) is the terminal portion 615 of the high-voltage device main body 601 of FIG.
  • FIG. 24 A perspective view which shows the state which the power terminal part of the connection terminal group 740 is fitted.
  • A) is a right side view of the state before the terminal portion 615 of the high voltage device main body 601 of FIG. 21 is fitted to the positive electrode terminal group of the connection terminal group 740
  • B) is a right side view of the terminal portion 615 of the connection terminal group. It is a right side view of the state after fitting in the positive electrode terminal group of 740.
  • A) is a front view of FIG. 24 (B), and (B) is a top view of FIG. 24 (B).
  • A) is a perspective view seen from the rear side of the terminal portion 615 in the high voltage device main body 601 of FIG.
  • (B) is a perspective view of a group of connection terminals cast into the resin portion of (A).
  • (A) is a perspective view seen from the front side of the terminal portion 615 in the high voltage device main body 601 of FIG. 21, and (B) is a positive electrode input terminal 622 cast into the resin portion of (A) and a negative electrode input terminal.
  • It is a perspective view of 627 and short bars 631, 632, 633.
  • FIG. 1 is an overall view of an electrical equipment system according to an embodiment of the present invention.
  • the electrical equipment system is composed of a plurality of electrical equipment main bodies (1, 31, 61) and a plurality of battery packs (101, 201, 301).
  • the electric device main body (1, 31, 61) is a device that operates by mounting a corresponding battery pack (any of 101, 201, 301), and is a cordless device that does not require an AC power supply.
  • the main body of the electric equipment (1, 31, 61) is classified according to the rated voltage of the battery pack to be used, and here, the electric equipment group (low voltage electricity) configured to receive the low voltage of the rated voltage of 18V.
  • low voltage device main body 1 The main body of the device, hereinafter referred to as "low voltage device main body 1", and a group of electric devices configured to receive a medium voltage supply of a rated voltage of 36 V (medium voltage electric device main body, hereinafter referred to as “medium voltage device”. It is classified into an electric device group (a high voltage electric device main body, hereinafter referred to as “high voltage device main body 61”), which is configured to receive a high voltage supply of a rated voltage of 72 V (referred to as "main body 31"). ..
  • the state in which the battery pack (101, 201, 301) is attached is referred to as an "electric device", and the main body side in the state in which the battery pack (101, 201, 301) is removed is referred to as an “electric device main body”.
  • FIG. 1 shows an illustration of a cordless rotary hammer drill as a low-voltage device main body 1, but it is not limited to the hammer drill, but is not limited to the hammer drill, but also has an impact driver, an impact wrench, a driver drill, a disc grinder, a blower, a cleaner, a cutter, a band saw, and a multi-tool.
  • Various equipment such as jigsaws, saver saws, chainsaws, circular saws, kanna, pin nailers, tackers, nailers, TVs, radios, speakers, fans, cold storage, lights, high pressure washer, brush cutters, etc. are used. ..
  • FIG. 1 shows an illustration of a high-output cordless rotary hammer drill as the medium-voltage device main body 31, but the medium-voltage device main body 31 is not limited to the hammer drill and requires a higher output than the low-voltage device main body 1.
  • Equipment to be used such as impact wrench, vibration driver drill, disc grinder, blower, cleaner, reinforcing bar cut bender, tip saw cutter, jigsaw, saver saw, dust collecting circular saw, chain saw, circular saw, finishing nail cutter, tacker, etc.
  • a variety of equipment such as concrete vibrators, planting varicans, and brush cutters are used. Further, although FIG.
  • the high voltage device main body 61 is a device that requires a higher output than the medium voltage device main body 31 and is a medium voltage device.
  • the same equipment as the main body 31 is used.
  • the main body of a high voltage electric device that can be realized by an operating voltage of 72 V (direct current), for example, a cutter, a tipped saw cutting machine, and the like are also included in the high voltage device main body 61.
  • the battery packs (101, 201, 301) are removable with respect to the corresponding electrical equipment bodies (1, 31, 61) and have a predetermined rated voltage.
  • the low / medium voltage battery pack 201 first and second voltage battery pack
  • the medium / high voltage battery pack 301 second voltage battery pack
  • the low voltage battery pack 101 is a power source for a single voltage (rated here, rated 18V) that has been conventionally used.
  • Each of the battery packs 101, 201, and 301 contains a plurality of battery cells in a synthetic resin case.
  • At the top of the battery packs 101, 201, and 301 there are rail grooves (described later in FIG. 2) for mounting on the main body of the electric device (1, 31, 61), and a group of connection terminals for realizing electrical connection (described later in FIG. 2).
  • a latch mechanism (described later in FIG. 2) for maintaining or releasing the mounting state with the electric device main body (1, 31, 61) side is provided (described later in FIGS. 6 and later).
  • solid line arrows 91 to 95 indicating which electric device main bodies 1, 31, and 61 can be attached to the battery packs 101, 201, and 301 show their correspondence. Since the low-voltage battery pack 101 is dedicated to 18V (dedicated to the low-voltage device main body 1) and is a single-voltage power supply, the low-voltage device main body 31 for 36V is indicated by a cross at the end of the dotted arrow 96. Cannot be used. Here, "cannot be used” means that (1) the low-voltage battery pack 101 cannot be physically attached to the medium-voltage device main body 31, and (2) it can be attached but is electrically connected.
  • the low-voltage battery pack 101 is configured so as not to be physically attached to the medium-voltage equipment main body 31. Is the most preferable.
  • the low voltage battery pack 101 interferes with the convex portion 48 by forming the convex portion 48 (described later in FIG. 8) in the battery pack mounting portion of the medium voltage device main body 31, thereby causing the low voltage battery.
  • the pack 101 is configured to be prevented from being attached to the medium voltage device main body 31.
  • the user can easily prevent the low voltage battery pack 101 from being used for the medium voltage device main body 31 by configuring the unusable low voltage battery pack 101 so as not to be accidentally attached to the medium voltage device main body 31. Can be identified.
  • the low-voltage battery pack 101 is configured so that it cannot be physically attached to the high-voltage device main body 61. This is because, similarly to the medium voltage device main body 31, a convex portion 78 (see FIG. 11 to be described later) for preventing erroneous mounting is formed on the battery pack mounting portion of the high voltage device main body 61.
  • the low / medium voltage battery pack 201 is a so-called different voltage (multi-volt) compatible power supply capable of outputting either 18V or 36V output.
  • the low / medium voltage battery pack 201 can be physically attached to both the low voltage device main body 1 as shown by the solid line arrow 92 and the medium voltage device main body 31 as shown by the solid line arrow 93, and is also an electric device. It can be electrically connected to the device-side connection terminal on the main body (1, 31) side.
  • the low / medium voltage battery pack 201 cannot be used for the high voltage device main body 61 as shown by the dotted arrow 97. The fact that it cannot be used in this case may be realized in any of the above three states (1) to (3).
  • the medium / high voltage battery pack 301 is a so-called different voltage (multi-volt) compatible power supply capable of outputting either 36V or 72V output.
  • the medium / high voltage battery pack 301 has a basic mounting structure, that is, a rail groove and a latch mechanism for mounting on the electric device main body (31, 61) have a shape compatible with the low / medium voltage battery pack 201. Is. Since the medium / high voltage battery pack 301 has twice the voltage (rated voltage 72V) of the low / medium voltage battery pack 201, it requires twice as many battery cells as the medium / high voltage battery pack 301.
  • the size of the medium / high voltage battery pack 301 is nearly doubled as shown in FIG.
  • the number and shape of the rail groove, the latch mechanism, and the slit group accommodating the connection terminal are almost the same.
  • the solid line arrow 94 it can be physically attached to either the medium voltage device main body 31 or the high voltage device main body 61 as shown by the solid line arrow 95, and the device on the electric device main body (31, 61) side. It can be electrically connected to the side connection terminal.
  • the medium / high voltage battery pack 301 is not indicated by an arrow, it cannot be used for the low voltage device main body 1.
  • "unusable" means that it cannot be physically attached, or can be configured as in (2), as in (1) above.
  • the battery packs 101, 201, and 301 can be charged using an external charger (not shown) after being removed from the electric device main body (1, 31, 61).
  • the battery packs 101, 201, and 301 can all be charged. That is, the battery packs 101 and 201 are charged using the low voltage (18V) charger, and the battery pack 301 is charged using the medium voltage (36V) charger.
  • the battery pack 201 can be charged using a medium voltage (36V) charger, and the battery pack 301 can be charged using a high voltage (72V) charger.
  • a combination of low voltage, medium voltage, and high voltage is configured at 18V, 36V, and 72V, but the present invention is not limited to the combination of these voltages, and 14.4V. It may be composed of a combination of 28.8V and 57.6V, or any other combination. However, it is preferable to use a combination in which the medium voltage is twice the low voltage and the high voltage is twice the medium voltage, because the terminal configuration of the battery pack described in FIGS. 2 and 2 can be easily realized. Further, it is not limited to 2 times, but may be 3 times, 4 times, or the like.
  • the overlapping electric device main body (here, the medium voltage device main body 31). ) Exists, so for users who mainly have low to medium power equipment and users who mainly have medium to high power equipment, it is only necessary to prepare one battery pack to install the medium voltage equipment 31. It is convenient and convenient because it can be used.
  • FIG. 2 is a perspective view of the main body of the electric device according to the embodiment of the present invention and the battery pack 101 mounted on the main body of the electric device.
  • an example of the impact tool 1A is shown as the main body of the low voltage device.
  • the impact tool 1A having an operating voltage of 18 V has a removable battery pack 101, and drives advanced tools and work equipment by using a rotational driving force of a motor (not shown).
  • the impact tool 1A performs tightening work by applying a rotational force or a striking force in the axial direction to the tip tool 9.
  • the electric device main body 1 includes a housing 2 which is an outer frame forming an outer shape.
  • the housing 2 is composed of a body portion 2a for accommodating a motor and a power transmission mechanism (not shown), a handle portion 2b extending downward from the body portion 2a, and a battery pack mounting portion 10 formed under the handle portion 2b. ..
  • a trigger-shaped operation switch 4 is provided in the vicinity of a part of the handle portion 2b where the index finger hits when the user grips the handle portion 2b.
  • An anvil (not visible in the figure), which is an output shaft, is provided on the front side of the housing 2, and a tip tool holding portion 8 for mounting the tip tool 9 is provided at the tip of the anvil.
  • a Phillips screwdriver bit is attached as the tip tool 9.
  • the battery pack mounting portion 10 is formed with rail portions 11a and 11b including grooves and rails extending in parallel in the front-rear direction on the inner wall portions on both the left and right sides, and a terminal portion 15A is provided between them.
  • the terminal portion 15A is manufactured by integrally molding a non-conductor material such as synthetic resin, and a plurality of metal terminals such as a positive electrode input terminal 22, a negative electrode input terminal 27, and an LD terminal (abnormal signal terminal) 28 are cast therein. It is a thing.
  • other terminals for signal transmission are provided between the positive electrode input terminal 22 and the negative electrode input terminal 27 in the terminal portion 15A. not.
  • the terminal portion 15A is manufactured by casting a plurality of metal terminals (here, terminals 22, 27, 28) by molding synthetic resin, and has a vertical surface 15a as an abutting surface in the mounting direction (front-back direction) and a horizontal plane. Has 15b.
  • the terminal portion 15A is fixed to the left-right split type housing 2 so as to be sandwiched between the opening portions (terminal holding portions).
  • the horizontal surface 15b of the terminal portion 15A is a surface that is close to or faces the upper surface 115 on the battery pack 101 side when the battery pack 101 is mounted.
  • a curved portion 12 that abuts on the raised portion 132 of the battery pack 101 is formed on the front side of the horizontal plane 15b, and a protruding portion 14 is formed near the center of the left and right sides of the curved portion 12.
  • the protrusion 14 also serves as a boss for screwing the housing 2 of the electric device main body 1 (low voltage device main body 1A) formed in two in the left-right direction, and limits the relative movement of the battery pack 101 in the mounting direction. It also acts as a stopper.
  • the battery pack 101 contains 10 lithium-ion battery cells with a rating of 3.6 V in a case consisting of an upper case 110 and a lower case 102, and prepares two sets of cell units in which five battery cells are connected in series. Then, by connecting the outputs of those cell units in parallel, a DC with a rating of 18V is output.
  • a step portion 114 located between the lower surface 111, the upper surface 115 located above the lower surface 111, and the lower surface 111 and the upper surface 115 is formed.
  • a plurality of slots 121 to 128 extending rearward from the front stepped portion 114 on the upper step surface 115 are formed.
  • Two rail portions 138a and 138b are formed on the side surface of the upper surface 115 of the battery pack 101.
  • the rail portions 138a and 138b are formed to include a groove whose longitudinal direction is parallel to the mounting direction of the battery pack 101.
  • the groove portion of the rail portions 138a and 138b has an open end at the front end and a closed end connected to the front side wall surface of the raised portion 132 at the rear end.
  • a latch mechanism is provided on the rail portions 138a and 138b.
  • the latch mechanism includes latch buttons 141a and 141b, and a hooking portion 142a (not visible in the figure) and 142b that move inward in response to their pressing.
  • a stopper portion 131 that is recessed downward from the raised portion 132 is formed in the vicinity of the center sandwiched between the latch buttons 141a and 141b of the low-voltage battery pack 101.
  • the stopper portion 131 serves as an abutting surface of the protrusion 14 when the low-voltage battery pack 101 is mounted on the battery pack mounting portion 10, and is a protrusion on the electric device main body 1 (low-voltage device main body 1A) side.
  • a plurality of terminals (device side terminals) arranged in the electric device main body 1 (low voltage device main body 1A) and a plurality of terminals arranged in the low voltage battery pack 101.
  • the connection terminals (described later in FIG. 7 and the like) come into contact with each other and become conductive.
  • a plurality of slits 134 serving as cooling air intakes are provided in the inner portion of the stopper portion 131 of the low voltage battery pack 101.
  • the slit 134 is covered so as not to be visible from the outside and is closed.
  • the slit 134 is used as a wind window for forcibly flowing cooling air inside the low-voltage battery pack 101.
  • the cooling air taken into the low-voltage battery pack 101 is discharged to the outside through a slit 105, which is an exhaust air window provided on the front wall of the lower case 102.
  • the slit 134 may be used for exhaust gas, and the slit 105 may be used for intake air.
  • the battery packs 101, 201, and 301 shown in FIG. 1 are formed so that the rail portions 138a and 138b have the same shape, the latch mechanism is arranged in the same manner, and the plurality of slots 121 to 128 are arranged in the same manner. .. That is, the mounting mechanism portions of the battery packs 101, 201, and 301 are formed so as to have compatibility. However, the shape for preventing erroneous mounting is partially changed so that the battery pack on the high voltage side cannot be erroneously mounted on the main body of the electric device on the low voltage side (details will be described later in FIGS. 4 and 5).
  • FIG. 3 is a perspective view of the low voltage battery pack 101 as viewed from another angle.
  • the rear side of the raised portion 132 of the low voltage battery pack 101 is formed by the slope 133.
  • the two rail portions 138a and 138b are formed in parallel so as to extend in the front-rear direction.
  • the slot group arrangement area 120 is arranged on the upper surface 115 sandwiched between the rail portions 138a and 138b, and eight slots 121 to 128 are formed in the slot group arrangement area 120.
  • the slots 121 to 128 are notched portions so as to have a predetermined length in the battery pack mounting direction, and inside the notched portions, the electric device main body 1 or an external charging device (shown).
  • connection terminals that can be fitted with the device-side terminals of (1) are arranged.
  • the connection terminal on the terminal portion 15A side can be inserted into the slots 121 to 128 by bringing the terminal portion 15A or the like on the electrical equipment main body 1 side close to the slots 121 to 128 from the front side.
  • the slot 121 on the right side of the low-voltage battery pack 101 near the rail portion 138a serves as an insertion port for the positive electrode terminal (C + terminal) for charging, and the slot 122 inserts the positive electrode terminal (+ terminal) for discharging. It becomes a mouth.
  • the slot 127 on the left side of the low voltage battery pack 101 near the rail portion 138b serves as an insertion port for the negative electrode terminal ( ⁇ terminal).
  • a plurality of signal terminals for signal transmission used for control to the low voltage battery pack 101 and the electric device main body 1 or an external charging device (not shown) are arranged, and here, a signal is arranged.
  • Four terminals 123-126 are provided between the power terminals.
  • the slot 123 is a spare terminal insertion port, and in this embodiment, instead of providing a metal terminal, a synthetic resin partition plate 47 (described later in FIG. 7) is inserted.
  • the slot 124 is an insertion port for a T terminal for outputting a signal that serves as identification information for the low-voltage battery pack 101 to the main body of the electric device or the charging device.
  • the slot 125 is an insertion port for a V terminal for inputting a control signal from an external charging device (not shown).
  • the slot 126 is an insertion port for an LS terminal for outputting battery temperature information by a thermistor (temperature sensitive element) (not shown) provided in contact with the cell.
  • a slot 128 for the LD terminal which outputs an abnormal stop signal by the battery cell protection circuit is provided.
  • the lower case 102 has a substantially rectangular parallelepiped shape with an open upper surface, and is composed of a bottom surface, a front wall extending vertically with respect to the bottom surface, a rear wall, a right side wall surface, and a left side wall surface.
  • a locking portion 142b protrudes to the left in the rail portion 138b due to the action of a spring, and is attached to the rail portion 11a of the electrical equipment main body 1 (low voltage equipment main body 1A).
  • a similar locking portion 142a is also provided on the right rail portion 138a.
  • FIG. 4 is a perspective view showing the appearance of the low / medium voltage battery pack 201.
  • the appearance of the low / medium voltage battery pack 201 is almost the same as that of the low voltage battery pack 101 except for the portion provided with the display unit 280, and a plurality of slots (225, 226, etc.) are formed in the upper case 210. Will be done.
  • the left-right width and front-back length of the plurality of slots are the same size as the low-voltage battery pack 101 shown in FIG.
  • the battery cell is housed in a case composed of an upper case 210 and a lower case 202. Since the total number of battery cells housed inside the lower case 202 is 10, it can be realized in a housing having the same size as the low-voltage battery pack 101 shown in FIG.
  • the difference between the lower case 102 in FIG. 3 and the lower case 202 in FIG. 4 is mainly due to the difference in design.
  • the low / medium voltage battery pack 201 has the same shape of the rail portion 238a, 238b, the latch, the raised portion, and the shape of the lower surface 211 so that it can be mounted not only on the medium voltage device main body 31 but also on the low voltage device main body 1. be.
  • the slight difference is that a recess 216 that is recessed from the top to the bottom is formed on the upper surface 215, and further, the connection terminal group (power terminal group of 261, 262, 267, 271, 272, 277 described later in FIG. 7) is formed.
  • the protrusions 217a and 217b that slightly project upward from the bottom are formed for accommodating.
  • the concave portion 216 is configured to correspond to a convex portion 48 (see FIG. 8 to be described later) for preventing erroneous mounting formed in the terminal portion 45 of the medium voltage device main body 31. That is, when the electric device main body has a convex portion 48 for preventing erroneous mounting (here, the medium voltage device main body 31 and the high voltage device main body 61), it cannot be mounted on the low voltage battery pack 101 having no concave portion 216. become.
  • a display unit 280 is provided on the rear slope of the low / medium voltage battery pack 201.
  • the display unit 280 is provided with four display windows 281 to 284, and a push button type switch button 285 is provided on the right side of the display window 284.
  • the switch button 285 is an operation unit operated by the user. LEDs (light emitting diodes) (not shown) are arranged inside the display windows 281 to 284, and are lit from the inside of the display windows 281 to 284.
  • the entire display unit 280 is covered with a laminated film, and the display windows 281 to 284 are configured to make a part of the printed laminated film transparent or translucent so that light can be transmitted.
  • the switch button 285 is a button operated by the user, and when the switch button 285 is pressed, the remaining battery level is displayed on the display windows 281 to 284 according to the remaining battery level of the low / medium voltage battery pack 201. Will be.
  • FIG. 5 is a perspective view showing the appearance of the medium / high voltage battery pack 301.
  • the appearance of the medium / high voltage battery pack 301 is an extension to the upper case 310 because the number of battery cells to be accommodated is doubled (10 to 20) compared to the low / medium voltage battery pack 201.
  • the 310a is formed, and the extension portion 302a is formed in the lower case 302.
  • the shape of the portion excluding the extension portions 302a and 310a is compatible with the low / medium voltage battery pack 201 (almost the same shape).
  • a display unit 280 is arranged on the rear side of the upper case 310.
  • the front side of the extension portion 310a of the upper case 310 has the same shape as the low / medium voltage battery pack 201, it is designated by the same number as the low / medium voltage battery pack 201.
  • the shape of the recess 216 recessed from the top to the bottom in the upper surface 215 of the medium / high voltage battery pack 301 is the same as that of the low / medium voltage battery pack 201.
  • the recess 216 has a common shape in this way, it means that the low / medium voltage battery pack 201 can be mounted on the high voltage device main body 61.
  • the shape of the recess 216 may be further changed, or another erroneous mounting prevention mechanism may be provided so that the low / medium voltage battery pack 201 cannot be physically mounted on the high voltage device main body 61.
  • FIG. 6A is a connection circuit diagram of the positive electrode terminals (262 and 272) and the negative electrode terminals (267 and 277) of the low / medium voltage battery pack 201, and the positive electrode input terminal 22 and the negative electrode input terminal 27 of the low voltage device main body 1.
  • (B) is the positive electrode terminals (262 and 272) and the negative electrode terminals (267 and 277) of the low / medium voltage battery pack 201, and the positive electrode input terminal 52, the negative electrode input terminal 57, and the short bar of the medium voltage device main body 31. It is a connection circuit diagram with 59.
  • the positive electrode terminal for power output of the low / medium voltage battery pack 201 is composed of two upper positive electrode terminals 262 and a lower positive electrode terminal 272.
  • the negative electrode terminal of the low / medium voltage battery pack 201 is composed of two upper negative electrode terminals 267 and a lower negative electrode terminal 277.
  • the upper positive electrode terminal 262 and the lower positive electrode terminal 272 are the upper positive electrode terminal 262 and the lower positive electrode when the low / medium voltage battery pack 201 is not attached to any of the electric device main bodies or charging devices (when not attached).
  • the terminal 272 is in a non-contact state, that is, in a non-conducting state
  • the upper negative electrode terminal 267 and the lower negative electrode terminal 277 are in a non-contact state, that is, in a non-conducting state.
  • first cell unit 245 Inside the low / medium voltage battery pack 201, five battery cells 245a to 245e are connected in series to form a first cell unit 245, and five battery cells 246a to 246e are connected in series to form a second cell.
  • Form unit 246 The positive electrode side output of the first cell unit 245 (positive electrode of the battery cell 245a) is connected to the upper positive electrode terminal 262, and the negative electrode side output (negative electrode of the battery cell 245e) is connected to the lower negative electrode terminal 277.
  • the positive electrode side output of the second cell unit 246 (the positive electrode of the battery cell 246a) is connected to the lower positive electrode terminal 272, and the negative electrode side output (the negative electrode of the battery cell 246e) is connected to the upper negative electrode terminal 267.
  • the low-voltage device main body 1 is formed with a plurality of output terminal groups (device-side connection terminals) for connection with the battery packs 101 and 201, and positive electrode input terminals 22 and negative electrode inputs are formed therein.
  • the terminal 27 is included.
  • the positive electrode input terminal 22 is made of a metal flat plate having an effective length of H in the vertical direction so as to be able to contact both the claws (262a and 272a) of the positive electrode terminals 262 and 272 arranged so as to be vertically separated from each other. Manufactured.
  • the negative electrode input terminal 27 is made of metal having an effective vertical length of H so that it can contact both the claws (267a and 277a) of the negative electrode terminals 267 and 277 arranged so as to be vertically separated from each other. Manufactured on a flat plate. Since the low voltage device main body 1 has such a positive electrode input terminal 22 and a negative electrode input terminal 27, when the low voltage device main body 1 is equipped with the low / medium voltage battery pack 201 as shown in FIG. 6A. The first cell unit 245 and the second cell unit 246 are connected in parallel between the positive electrode input terminal 22 and the negative electrode input terminal 27 of the low voltage device main body 1, and the voltage of the two cell units connected in parallel, that is, the rating. A direct current of 18V will be output.
  • the medium voltage device main body 31 is formed with a plurality of output terminal groups (device side connection terminals) for connection with the low / medium voltage battery pack 201, in which a positive electrode input terminal 52, a negative electrode input terminal 57, and a short bar 59 are formed. Is included.
  • the positive electrode input terminal 52 and the negative electrode input terminal 57 correspond to medium voltage parallel terminals for connecting the plurality of cell units of the battery pack 301 in parallel. ..
  • the positive electrode input terminal 52 is configured to be able to contact only the claws of the upper positive electrode terminal 262 (262a and 262b, but 262b is not visible in the figure), and the negative electrode input terminal 57 is configured to be in contact with the claws (267a) of the upper negative electrode terminal 267. It is configured to be accessible only to 267b, where 267b is not visible in the figure).
  • the heights H1 of the positive electrode input terminal 52 and the negative electrode input terminal 57 are set. It is less than half of the height H in FIG. 6 (A).
  • the short bar 59 of the medium voltage device main body 31 is a short circuit made of a conductive member made of metal, and is a member bent into a U shape.
  • a terminal portion 59b is formed on one end side of the short-circuit terminal portion 59a of the short bar 59, and is arranged below the positive electrode input terminal 52.
  • a terminal portion 59c is formed on the other end side of the short-circuit terminal portion 59a of the short bar 59, and the terminal portion 59c is arranged below the negative electrode input terminal 57.
  • the terminal portion 59b is fitted with the lower positive electrode terminal 272, and the terminal portion 59c is fitted with the lower negative electrode terminal 277.
  • the terminal portions 59b and 59c of the short bar 59 are medium-voltage series terminals for connecting the plurality of cell units of the present invention in series.
  • the short bar 59 is fixed so as to be cast into a base portion 46 (described later in FIG. 8) made of synthetic resin together with other device-side terminals such as the positive electrode input terminal 52 and the negative electrode input terminal 57.
  • the short bar 59 does not come into contact with other metal terminals (52, 54 to 58), it is electrically insulated.
  • the short bar 59 is used to short-circuit the lower positive electrode terminal 272 and the lower negative electrode terminal 277, it is not necessary to wire to the control circuit or the like of the medium voltage device main body 31.
  • the terminal portion 59b of the short bar 59 is fitted to the claw portion of the lower positive electrode terminal 272 (272a and 272b, but 272b is not visible in the figure), and the terminal portion 59c is the claw portion of the lower negative electrode terminal 277 (277a and 277b). However, 277b is configured so that it can be contacted only (not visible in the figure).
  • the height H 2 of the terminal portions 59b and 59c of the short bar 59 is less than half of the height H in FIG. 6A.
  • the positive electrode terminal portion (52, 59b) and the negative electrode terminal portion (57, 59b) of the medium voltage device main body 31 are in the height direction of the positive electrode terminal portion (22) and the negative electrode terminal portion (27) of the low voltage device main body 1. It is provided in the area of. In this way, when the low / medium voltage battery pack 201 is mounted on the medium voltage device main body 31 as shown in FIG. 6B, it is between the positive electrode input terminal 52 and the negative electrode input terminal 57 of the medium voltage device main body 31.
  • a voltage in which the first cell unit 245 and the second cell unit 246 are connected in series, that is, a direct current having a rating of 36 V is output.
  • FIG. 7 is a diagram for explaining a connection state between the terminal portion 15 in the low voltage device main body 1 and the connection terminal group 260 of the low / medium voltage battery pack 201.
  • the low / medium voltage battery pack 201 includes a circuit board 250, and the circuit board 250 includes upper positive electrode terminals 261, 262, T terminal 264, V terminal 265, LS terminal 266, and upper side as connection terminals on the battery pack 201 side.
  • the negative electrode terminal 267 and the LD terminal 268 are fixed. These fixings are soldered on the back side of the circuit board 250 with the legs of each connection terminal penetrating the circuit board 250.
  • the circuit board 250 is further provided with lower positive electrode terminals 271 and 272 (272 is not visible in the figure) and lower negative electrode terminals 277.
  • the terminal unit 15 is included in the low-voltage device main body 1, and all the connection terminals are not shown in the terminal unit 15 shown in FIG. 2, but all the connection terminals are shown in FIG. 7 (A). Is shown.
  • the terminal portion 15 is provided with a positive electrode input terminal 22, a T terminal 24, a V terminal 25, an LS terminal 26, a negative electrode input terminal 27, and an LD terminal 28, and these metal terminals are cast into a base 16 made of synthetic resin. Manufactured in.
  • the terminal portions 22c and 24c to 28c of the connection terminals are exposed on the upper side of the base portion 16.
  • a partition plate 17 made of synthetic resin is formed between the positive electrode input terminal 22 and the T terminal 24.
  • the partition plate 17 is manufactured from the same member as the base 16 or is cast with a plate-shaped member made of another non-conductor.
  • FIG. 7B is a diagram showing a state in which the terminal portion 15 and the connection terminal group 260 are fitted to each other.
  • the illustration of the synthetic resin base portion 16 of the terminal portions 15 is omitted.
  • the connection state between the positive electrode input terminal 22 and the upper positive electrode terminal 262 and the lower positive electrode terminal 272, and the connection state between the negative electrode input terminal 27 and the upper negative electrode terminal 267 and the lower negative electrode terminal 277 is the contact state shown in FIG. 6A. It is the same.
  • FIG. 8 is a diagram for explaining a connection state between the terminal portion 45 of the medium voltage device main body 31 and the connection terminal group 260 of the low / medium voltage battery pack 201.
  • the structure of the circuit board 250 and the connection terminal group 260 provided therein is the same as that in FIG. 7.
  • the terminal portion 45 is a metal plate (short bar 59) in which device-side terminals such as the positive electrode input terminal 52 and the negative electrode input terminal 57 are cast and bent into a U shape. ) Is further cast into the base portion 46.
  • One end of the U-shaped bent metal plate serves as a short-circuit terminal portion 59b, and the other end portion serves as a short-circuit terminal portion 59c.
  • the positive electrode input terminal 52 and the negative electrode input terminal 57 have a vertical width of less than half (less than H / 2) as compared with the input terminals (22, 27) shown in FIG. 6 (A). It is configured to be sized.
  • the low / medium voltage battery pack 201 By simply attaching the low / medium voltage battery pack 201 to the terminal portion 45 having such a shape, the state shown in FIG. 8B is obtained, and DC power rated at 36 V is supplied to the positive electrode input terminal 52 and the negative electrode input terminal 57. Will be done.
  • the terminal portion 45 having the short-circuit circuit (59) in the medium-voltage device main body 31 By providing the terminal portion 45 having the short-circuit circuit (59) in the medium-voltage device main body 31 in this way, the low voltage of this embodiment having two positive electrode terminals (262, 272) and two negative electrode terminals (267, 277).
  • the series connection circuit of the first cell unit 145 and the second cell unit 146 can be established only by mounting the medium voltage battery pack 201. Further, the output voltage from the low / medium voltage battery pack 201 can be automatically switched by the shape of the terminal portion 45 on the side of the medium voltage device main body 31 to be mounted.
  • the terminal portion 45 is formed with a convex portion 48 projecting downward.
  • the left-right width and the front-back length of the convex portion 48 correspond to the left-right width and the front-back length of the recessed portion of the recess 216 of the low / medium voltage battery pack 201.
  • the convex portion 48 is a so-called erroneous mounting portion that prevents the convex portion 48 from being mounted on a battery pack (here, the low voltage battery pack 101) that is not compatible with the medium voltage device main body 31 having the terminal portion 45.
  • the low / medium voltage battery pack 201 is formed with a concave portion 216 corresponding to the convex portion 48.
  • the medium-voltage device main body 31 in which the convex portion 48 is formed has a low- / medium-voltage battery pack 201 (see FIG. 4) having a concave portion 216 and a medium / high-voltage battery pack 301 having a concave portion 216 (FIG. 5). See) can be installed.
  • the low voltage battery pack 101 in which the convex portion 48 is not formed cannot be attached to the low / medium voltage battery pack 201.
  • FIG. 8B is a diagram showing a state in which the terminal portion 45 and the connection terminal group 260 are fitted to each other.
  • the illustration of the synthetic resin base portion 46 of the terminal portions 45 is omitted.
  • the positive electrode input terminal 52 and the upper positive electrode terminal 262, the lower positive electrode terminal 272 and the short-circuit terminal portion 59b of the short bar 59, the negative electrode input terminal 57 and the upper negative electrode terminal 267, and the lower negative electrode terminal 277 and the short-circuit bar 59 are short-circuited.
  • the connection state of the terminal portion 59c is the same as the contact state shown in FIG. 6B.
  • the rated power of 36 V is supplied to the medium voltage device main body 31.
  • FIG. 9A shows the positive electrode terminals (362 and 372) and the negative electrode terminals (367 and 377) of the medium / high voltage battery pack 301, and the positive electrode input terminal 52, the negative electrode input terminal 57, and the short bar 59 of the medium voltage device main body 31.
  • (B) is a connection circuit diagram with the positive electrode terminals (362 and 372) and the negative electrode terminals (367 and 377) of the medium / high voltage battery pack 301, and the positive electrode input terminal 82 and the negative electrode input of the high voltage device main body 61. It is a connection circuit diagram with a terminal 87 and a short bar 89.
  • the positive electrode terminal for power output of the medium / high voltage battery pack 301 is composed of two upper positive electrode terminals 362 and a lower positive electrode terminal 372.
  • the negative electrode terminal of the medium / high voltage battery pack 301 is composed of two upper negative electrode terminals 367 and a lower negative electrode terminal 377.
  • the claws of these terminals are the power terminals (upper positive electrode terminal 262, lower positive electrode terminal 272, upper negative electrode terminal 267, lower negative electrode terminal 277) of the low / medium voltage battery pack 201. ) (For example, 262a, 262b, 267a, 277a shown in FIG.
  • the height in the vertical direction is less than half, and the terminal shape is elongated in the mounting direction of the battery pack.
  • the upper positive electrode terminal 362 and the lower positive electrode terminal 372 are the upper positive electrode terminal 362 and the lower positive electrode when the medium / high voltage battery pack 301 is not attached to any of the electric device main body 1 charging devices (when not attached).
  • the terminal 372 is in a non-contact state, and the upper negative electrode terminal 367 and the lower negative electrode terminal 377 are in a non-contact state (detailed structure will be described later with reference to FIG. 13).
  • first cell unit 345 Inside the medium / high voltage battery pack 301, 10 battery cells are connected in series to form a first cell unit 345, and 10 battery cells are connected in series to form a second cell unit 346.
  • the output of each cell unit is rated at 36V.
  • the positive electrode side output of the first cell unit 345 is connected to the lower positive electrode terminal 372, and the negative electrode side output is connected to the upper negative electrode terminal 367.
  • the lower positive electrode terminal 372 and the upper negative electrode terminal 367 form a pair of first output terminals.
  • the positive electrode side output of the second cell unit 346 is connected to the upper positive electrode terminal 362, and the negative electrode side output is connected to the lower negative electrode terminal 377.
  • the upper positive electrode terminal 362 and the lower negative electrode terminal 377 form a pair of first output terminals.
  • the positive electrode input terminal 52 is simultaneously fitted to the upper positive electrode terminal 362 and the lower positive electrode terminal 372, and the negative electrode input is performed.
  • the terminal 57 is fitted to the upper negative electrode terminal 367 and the lower negative electrode terminal 377 at the same time.
  • the short bar 59 includes any power terminal (upper positive electrode terminal 362, lower positive electrode terminal 372, upper negative electrode terminal 367, lower negative electrode terminal 377) or signal terminal (364 to 366, 368 described later in FIG. 10). Both are in a non-contact state and remain electrically floating.
  • a parallel connection circuit of the first cell unit 345 and the second cell unit 346 is formed, and a direct current rated at 36V is output.
  • the high-voltage device main body 61 is formed with a plurality of output terminal groups (device-side connection terminals) for connection with the battery packs 201 and 301, and includes a positive electrode input terminal 82, a negative electrode input terminal 87, and a short bar 89. Is done.
  • the positive electrode input terminal 82 constitutes the first input terminal
  • the negative electrode input terminal 87 constitutes the second input terminal.
  • the positive electrode input terminal 82 is configured to be able to contact only the claws of the upper positive electrode terminal 362 (362a and 362b, but 362b is not visible in the figure), and the negative electrode input terminal 87 is configured to be in contact with the claws (367a) of the upper negative electrode terminal 367.
  • the heights H3 of the positive electrode input terminal 82 and the negative electrode input terminal 87 are set. It is less than 1/4 of the height H in FIG. 6 (A).
  • the short bar 89 of the high voltage device main body 61 is a short circuit made of a conductive member made of metal, and is an elongated member bent into a U shape.
  • a terminal portion 89b is formed on one end side of the connection portion 89a of the short bar 89, and is arranged below the positive electrode input terminal 82.
  • a terminal portion 89c is formed on the other end side of the connection portion 89a of the short bar 89, and the terminal portion 89c is arranged below the negative electrode input terminal 87.
  • the terminal portion 89b is fitted with the lower positive electrode terminal 372, and the terminal portion 89c is fitted with the lower negative electrode terminal 377. That is, the terminal portions 89b and 89c of the short bar 89 are high-voltage series terminals for connecting the plurality of cell units of the present invention in series.
  • the short bar 89 is fixed so as to be cast into a synthetic resin base portion 76 (described later in FIG. 11) together with other device-side terminals such as the positive electrode input terminal 82 and the negative electrode input terminal 87. Since the short bar 89 is used to short-circuit the lower positive electrode terminal 372 and the lower negative electrode terminal 377, it is not necessary to wire to the control circuit or the like of the high voltage device main body 61.
  • the terminal portion 89b of the short bar 89 is fitted to the claw portion of the lower positive electrode terminal 372 (372a and 372b, but 372b is not visible in the figure), and the terminal portion 89c is the claw portion of the lower negative electrode terminal 377 (377a and 377b).
  • 377b is configured so that it can be contacted only (not visible in the figure).
  • the heights of the terminal portions 89b and 89c of the short bar 89 are less than 1/4 of the height H in FIG. 6A. That is, the positive electrode terminal portion (82, 89b) and the negative electrode terminal portion (87, 89c) of the high voltage device main body 61 are in the height direction of the positive electrode terminal portion (22) and the negative electrode terminal portion (27) of the low voltage device main body 1.
  • Two connection terminals (362 and 372, 376 and 377) are provided in the range of half of the above. In this way, when the medium / high voltage battery pack 301 is mounted on the high voltage device main body 61 as shown in FIG.
  • FIG. 10 is a diagram for explaining a connection state between the terminal portion 45 of the medium voltage device main body 31 and the connection terminal group 360 of the medium / high voltage battery pack 301.
  • the medium / high voltage battery pack 301 includes a circuit board 350, and the circuit board 350 includes upper positive electrode terminals 361, 362, lower positive electrode terminals 371, 372, T terminals 364, V as connection terminals on the battery pack 301 side.
  • the terminal 365, the LS terminal 366, the upper negative electrode terminal 367, the lower negative electrode terminal 377, and the LD terminal 368 are fixed.
  • the terminal group for signal transmission that is, the T terminal 364, the V terminal 365, the LS terminal 366, and the LD terminal 368 are the T terminal 264 and the V terminal 265 of the low / medium voltage battery pack 201 shown in FIG. 7 (A). It is preferable to use the same metal parts as the LS terminal 266 and the LD terminal 268. To fix these power terminals and signal terminals, pass the legs of each terminal through the holes of the circuit board 350 and solder them on the back side of the circuit board 350.
  • the upper positive electrode terminal 361 and the lower positive electrode terminal 371 are charging terminals connected to the charger, and are not connected to the connection terminal of the medium voltage device main body 31.
  • the terminal portion 45 is provided with a positive electrode input terminal 52, a T terminal 54, a V terminal 55, an LS terminal 56, a negative electrode input terminal 57, and an LD terminal 58, and these metal terminals are cast on a base portion 46 made of synthetic resin. Manufactured in a crowd. Connection portions 52c, 54c, 55c, 56c, 57c, 58c, which are part of each terminal component, are exposed on the upper side of the base portion 46.
  • the positive electrode input terminal 52 is connected to the connection portion 52c
  • the negative electrode input terminal 57 is connected to the terminal portion 57c.
  • a partition plate 47 made of synthetic resin is formed between the positive electrode input terminal 52 and the T terminal 54.
  • the partition plate 47 is manufactured by using the same member as the base portion 46, or by casting a plate-shaped member made of another non-conductor.
  • the terminal portion 45 is further formed with a convex portion 48 for preventing erroneous mounting.
  • FIG. 10B is a perspective view showing a state in which the terminal portion 45 and the connection terminal group 360 are fitted to each other.
  • the medium / high voltage battery pack 301 has a pair of first output terminals (lower positive electrode terminal 372 and upper negative electrode terminal 367) extending upward from the circuit board 350 and connected to one positive electrode and a negative electrode of a plurality of cell units. It has a pair of second output terminals (upper positive electrode terminal 362 and lower negative electrode terminal 377) extending upward from the circuit board 350 and connected to another positive electrode and negative electrode of the plurality of cell units.
  • the pair of first output terminals and the pair of second output terminals are connected to the input terminals (positive electrode input terminal 52 and negative electrode input terminal 57) of the medium voltage device main body 31, respectively. It has a connection portion and an avoidance portion between the connection portion and the substrate to avoid a medium voltage series terminal.
  • the short-circuit terminal portion 59b of the short bar 59 is located in the avoidance portion where the terminal portions of the first and second output terminals do not exist, and is either the upper positive electrode terminal 362 or the lower positive electrode terminal 372. It is in a state where it does not come into contact with.
  • the short-circuit terminal portion 59c of the short bar 59 is also in an insulated state in which it does not contact either the upper negative electrode terminal 367 or the lower negative electrode terminal 377. Therefore, in this connection state, a voltage in which the first cell unit 345 and the second cell unit 346 are connected in parallel between the positive electrode input terminal 52 and the negative electrode input terminal 57, that is, a direct current with a rating of 36 V is output. ..
  • the medium / high voltage battery pack 301 can be mounted on the medium voltage device main body 31.
  • the lower half of the lower positive electrode terminal 372 is covered with a synthetic resin cover so that the short-circuit terminal portion 59b of the short bar 59 and the lower positive electrode terminal 372 do not come into contact with each other. It is preferable to attach it to the lower positive electrode terminal 372 or to apply a resin such as silicon to the lower side of the lower positive electrode terminal 372.
  • the lower half of the lower positive electrode terminal 371 and the lower negative electrode terminal 377 is also provided with some kind of insulating means such as a synthetic resin cover so that the short bar 59 has the lower positive electrode terminal 372 and the lower negative electrode terminal 377. It is good to prevent conduction. That is, it is preferable to provide an insulating means between the short bar 59 so that the short bar 59 does not come into contact with the positive electrode terminal and the negative electrode terminal.
  • FIG. 11A is a diagram showing the terminal portion 75 of the high voltage device main body 61 and the connection terminal group 360 of the medium / high voltage battery pack 301, and the configuration of the connection terminal group 360 and the like is the configuration shown in FIG. Is the same as.
  • the terminal portion 75 includes a positive electrode input terminal 82 and a negative electrode input terminal 87 having a height extremely smaller in the vertical direction than the positive electrode input terminal 52 and the negative electrode input terminal 57 of the medium voltage device main body 31 shown in FIG. Will be done.
  • a metal plate (short bar 89) bent in a U shape is provided below the positive electrode input terminal 82 and the negative electrode input terminal 87, and the short-circuit terminal portion 89b thereof is provided below the positive electrode input terminal 82.
  • a short-circuit terminal portion 89c is provided below the negative electrode input terminal 87.
  • the positive electrode input terminal 82, the negative electrode input terminal 87, and the short bar 89 are all located at the connection portion where the arm portions (362a, 362b, etc.) of the first and second output terminals are located.
  • the portion of the short bar 59 in FIG. 10 where the short-circuit terminal portions 59b and 59c are located is an avoidance portion, no metal terminal is provided, and the corresponding portion of the terminal portion 75 is closed with resin. Is.
  • FIG. 11B is a diagram showing the shapes of the connection terminals (82, 84 to 88) and the short bar 89 cast into the base portion 76, omitting the illustration of the resin portion of the terminal portion 45.
  • the T terminal 84, V terminal 85, LS terminal 86, and LD terminal 88, which are terminals for signal transmission, have the same shape as the T terminal 54, V terminal 55, LS terminal 56, and LD terminal 58 shown in FIG. ..
  • Connection portions 84c, 85c, 86c, 88c communicating with the T terminal 84, the V terminal 85, the LS terminal 86, and the LD terminal 88 are formed on the upper side of the base portion 76.
  • the connecting portions 82c and 87c communicating with the positive electrode input terminal 82 and the negative electrode input terminal 87 via the connecting portions 82b and 87b are also connected to the base portion 76. It is formed on the upper side. Since the short bar 89 is a metal piece bent in a U shape and does not need to be connected to the electric circuit on the high voltage device main body 61 side, a terminal such as the connection portion 84c is not formed.
  • the positive electrode input terminal 82 is fitted between the arms 362a and 362b of the upper positive electrode terminal 362, and the negative electrode input terminal 87 is the upper negative electrode terminal 367. It fits between the arms 367a and 367b.
  • the short-circuit terminal portion 89b of the short bar 89 is fitted between the arm portions 372a and 372b of the lower positive electrode terminal 372 (see FIG. 13 for reference numerals), and the short-circuit terminal portion 89c is the lower negative electrode terminal 377. It fits between the arms 377a and 377b (see FIG. 13 for reference numerals).
  • FIG. 12 is a diagram showing a state in which the terminal portion 75 and the connection terminal group 360 are fitted to each other.
  • the positive electrode input terminal 82 and the upper positive electrode terminal 362, the lower positive electrode terminal 372 and the short-circuit terminal portion 89b of the short bar 59, the negative electrode input terminal 87 and the upper negative electrode terminal 367, and the lower negative electrode terminal 377 and the short bar 89 are short-circuited.
  • the connection state of the terminal portion 89c is the same as the contact state shown in FIG. 9B.
  • the contact state shown in FIG. 9B is obtained and the power of the rated 72V is supplied to the high voltage device main body 61.
  • FIG. 13 is a perspective view of the terminal portion 75 of FIG. 12 and the connection terminal group 360 as viewed from different directions (at the time of fitting).
  • the base portion 76 (see FIG. 12) of the terminal portion 75 is not shown.
  • the positive electrode input terminal 82 and the negative electrode input terminal 87 of the terminal portion 75 have a small vertical width (excluding the portion covered by the base portion 76 (see FIG. 12) which is a resin portion) and have a height thereof. It is less than 1/4 of the input terminals 22 and 27 of the low voltage device main body 1 and less than half of the input terminals 52 and 57 of the medium voltage device main body 31.
  • a short bar 89 bent in a substantially U shape is provided below the positive electrode input terminal 82 and the negative electrode input terminal 87.
  • the shape of the short bar 89 has a small height in the vertical direction, but the width in the horizontal direction and the length in the front-rear direction are the same as those of the short bar 59 (see FIG. 10B) included in the medium voltage device main body 31.
  • the vertical size of the short bar 89 is less than half that of the short bar 59 (see FIG. 10B).
  • the role of the short bar 89 is the same as that of the short bar 59 included in the medium voltage device main body 31, and the short bar 89 is electrically short-circuited by fitting into the lower positive electrode terminal 372 and the lower negative electrode terminal 377.
  • FIG. 13B is a partially enlarged view of the positive electrode input terminal 82 and the terminal portion 89b of the short bar 89.
  • the positive electrode input terminal 82 is connected to the connecting portion 82c via the connecting portion 82b.
  • the vertical cross-sectional shape extending in the vertical and horizontal directions of the short bar 89 under the positive electrode input terminal 82 is a quadrangle, and the bottom surface of the terminal portion 82a of the positive electrode input terminal 82 and the upper surface of the short circuit terminal portion 89b of the short bar 89. Is a parallel plane with a gap in between.
  • FIG. 13B is a partially enlarged view of the positive electrode input terminal 82 and the terminal portion 89b of the short bar 89.
  • the positive electrode input terminal 82 is connected to the connecting portion 82c via the connecting portion 82b.
  • the vertical cross-sectional shape extending in the vertical and horizontal directions of the short bar 89 under the positive electrode input terminal 82 is a quadrangle, and the bottom surface of the
  • the positive electrode input terminal 82 portion is extracted and shown, but the shape of the negative electrode side of the terminal portion 75 is only symmetrical with the positive electrode side, and the terminal portion 87c of the negative electrode input terminal 87 and the short bar are shown.
  • the shape of the terminal portion 89c of 89 is the same as the shape of the positive electrode input terminal 82 and the terminal portion 89b.
  • FIG. 13 (C) is a view of the positive electrode terminals 362 and 372 of FIG. 13 (A) as viewed from the right side.
  • the upper positive electrode terminal 362 has two elongated arms 362a and 362b (not visible in the figure) extending forward from the left and right side surfaces near the upper end, and the lower positive electrode terminal 372 is from the left and right side surfaces near the upper end thereof. It has two elongated arms 372a, 372b (not visible in the figure) extending anteriorly.
  • the vertical positions of the arms 362a and 362b are the same, the vertical positions of the arms 372a and 372b are the same, and the arm 362a and the arm 372a are separated from each other by a certain distance in the vertical direction to form a battery pack or an external charger. When not connected to, it is electrically isolated.
  • the arm portion 362b and the arm portion 372b which cannot be seen in the figure, are also electrically isolated when they are not connected to the battery pack or the external charger.
  • the positive electrode input terminal 82 is fitted between the arms 362a and 362b, and the terminal portion 89b of the short bar 89 is fitted between the arms 372a and 372b.
  • the upper positive electrode terminal 362 and the lower positive electrode terminal 372 are not electrically conductive because they are separated by a predetermined gap. Similarly, on the negative electrode terminal side, the upper negative electrode terminal 367 and the lower negative electrode terminal 377 do not conduct with each other.
  • FIG. 14A is a diagram showing the shapes of the terminal portions 15, 45, 75 on the main body side of the electric device
  • FIG. 14B is a power terminal (positive electrode input terminal and negative electrode input terminal) at the terminal portions 15, 45, 75.
  • It is a comparison table that summarizes the arrangement status of. Since FIG. 14 is schematically illustrated for explaining these relationships, the shape and dimensions are not exact.
  • the shapes of the terminal portions 45 and 75 were set.
  • the external dimensions of the base portions 16, 46, and 76 of the terminal portions 15, 45, and 75 are almost the same and compatible (however, the presence or absence of the convex portions 48, 78 for preventing erroneous mounting is different).
  • the terminal portion 45 for 36V is divided into upper and lower parts, and two terminals (positive electrode input terminal 52 and short bar) are divided into the upper and lower parts.
  • the terminal portion 59b) of 59 was arranged.
  • the upper half region was further divided into two, and two terminals (positive electrode input terminal 82 and terminal portion 89b of the short bar 89) were arranged at a height portion of 1/4 of H.
  • the low / medium voltage battery pack 201 can be configured to be mounted on both the low voltage device main body 1 and the medium voltage device main body 31, and can be configured to be mounted on both the low voltage device main body 1 and the medium voltage device main body 31.
  • the battery pack 301 can be configured to be mounted on both the medium voltage device main body 31 and the high voltage device main body 61.
  • the medium voltage device main body 31 and the high voltage device main body 61 can be placed close to each other. It is possible to provide a medium / high voltage battery pack 301 that can be connected to both. Moreover, looking at the medium voltage device main body 31, any battery pack of the low / medium voltage battery pack 201 and the medium / high voltage battery pack 301 can be attached.
  • the range covered by the plurality of voltage switching type low / medium voltage battery pack 201 and the medium / high voltage battery pack 301 (the main body of the device that can be mounted) is overlapped (both can output 36V).
  • the adoption of the high-voltage device main body 61 was facilitated, and the medium / high-voltage battery pack 301 could be efficiently used between a plurality of voltages, and an easy-to-use electric device system could be realized.
  • the terminal portion 15 for 18V (for low voltage) is divided and used for the terminal portion 45 for 36V and one half (upper half) of the terminal portion 45 for 36V.
  • the terminal unit 75 for 72V was further divided and used. Based on this idea, if the H / 4 at the top of the terminal part 75 for 72V is further divided into two and divided into two for each H / 8, a battery pack that can be switched between 72V and 144V is also theoretical. The above is feasible. However, in reality, the width of the terminal portion in the vertical direction is small and it is necessary to consider the harmful effects. Therefore, it is advisable to commercialize the battery pack and the electric device main body in accordance with the idea of the electric device system of this embodiment.
  • the upper half of the terminal portion 45 for 36V in the height direction is divided in the vertical direction and used.
  • the terminal portion 475 of the main body of the electric device and the medium / high voltage battery pack 501 realized based on this idea will be described with reference to FIGS. 15 to 19.
  • FIG. 15A is a connection circuit diagram between the medium / high voltage battery pack 501 and the medium voltage device main body 31 according to the second embodiment of the present invention.
  • the medium / high voltage battery pack 501 has two positive electrode terminals (562, 572) and two negative electrode terminals (567, 577) connected to the first cell unit 545 and the second cell unit 546, but has two terminals. It is characterized by arranging the arms in the front and back instead of the top and bottom. That is, the positive electrode terminal was composed of the rear positive electrode terminal 562 and the front positive electrode terminal 572, and the negative electrode terminal was composed of the rear negative electrode terminal 567 and the front negative electrode terminal 577.
  • the medium voltage device main body 31 has the same shape as the terminal portion 45 described with reference to FIG. 10 (A).
  • the positive electrode of the first cell unit 545 is connected to the front positive electrode terminal 572, and the negative electrode of the first cell unit 545 is connected to the rear negative electrode terminal 567.
  • the positive electrode of the second cell unit 546 is connected to the rear positive electrode terminal 562, and the negative electrode of the second cell unit 546 is connected to the front negative electrode terminal 577.
  • the front positive electrode terminal 572 has two left and right arm portions 572a and 572b, and the rear positive electrode terminal 562 has two left and right arm portions 562a and 562b.
  • the front negative electrode terminal 577 has two left and right arm portions 577a and 577b, and the rear negative electrode terminal 567 has two left and right arm portions 567a and 567b.
  • These terminals (562, 572, 567, 577) can be configured with common parts.
  • the rear side of the portion near the circuit board 550 is connected between the left and right sides, and is formed in a substantially U shape in which the front side opens in top view.
  • Arm portions 572a and 572b extending upward from both the left and right sides of the U-shaped portion are formed.
  • Legs 572d and 572e are formed downward from the substantially U-shaped portion. The legs 572d and 572e penetrate the mounting holes of the circuit board 550 to the back side and are fixed by soldering on the back side of the circuit board 550.
  • the arms 572a and 572b are configured so that the distance (distance in the left-right direction) is wide near the circuit board and the distance becomes narrower toward the upper side.
  • the contact point with the connection terminal on the main body of the electric device (the narrowest part of the left and right arms 572a and 572b) is the positive electrode input terminal located on the upper side of the terminal 45 of the medium voltage device main body 31. It was set to the same position as 52.
  • the short bar 59 of the medium voltage device main body 31 is located between the left and right arm portions 572a and 572b, but has a distance from the left and right arm portions 572a and 572b, and is physically and electrically non-existent. In contact.
  • the contact state between the rear positive electrode terminal 562 and the positive electrode input terminal 52 is also the same as the contact state between the front positive electrode terminal 572 and the positive electrode input terminal 52. Therefore, the front positive electrode terminal 572 and the rear positive electrode terminal 562 are short-circuited via the positive electrode input terminal 52. Similarly, the front negative electrode terminal 577 and the rear negative electrode terminal 567 are short-circuited via the negative electrode input terminal 57.
  • a first cell unit 545 is inserted between the positive electrode input terminal 52 and the negative electrode input terminal 57 of the medium voltage device main body 31.
  • FIG. 15B is a connection circuit diagram between the medium / high voltage battery pack 501 and the high voltage device main body 461.
  • the shape of the terminal portion 475 of the high voltage device main body 461 is such that the positive electrode input terminal 482 and the terminal portion 489b of the short bar 489 are arranged in the front-rear direction, and the negative electrode input terminal 487 and the short bar 489 are arranged.
  • the terminal portions 489c are arranged so as to be arranged in the front-rear direction.
  • the positive electrode input terminal 482 and the negative electrode input terminal 487 are arranged so as to penetrate from the upper side to the lower side of the horizontal portion 476a (see FIG. 18 described later) of the base portion 476 (see FIG.
  • the short bar 489 is arranged so that the connecting portion 489a extends in the horizontal direction, and is cast in the horizontal portion 476a of the base portion 476 (see FIG. 18 described later) of the terminal portion 475.
  • the terminal portion 475 of the high-voltage device main body 461 is matched to the shape of the power terminal group (562, 567, 572, 577) of the middle / high-voltage battery pack 501 of the second embodiment, and the first cell unit 545 is matched. Since the parallel connection voltage (36V) and the series connection voltage (72) of the second cell unit 546 are output, it is possible to realize an easy-to-use electric device system that realizes automatic switching between medium and high voltage.
  • FIG. 16 is a diagram for explaining a connection state between the terminal portion 45 of the medium voltage device main body 31 and the connection terminal group 560 of the medium / high voltage battery pack 501 according to the second embodiment.
  • the medium / high voltage battery pack 501 includes a circuit board 550, and the circuit board 550 includes rear positive electrode terminals 561, 562 and front positive electrode terminals 571, 572, T as connection terminals on the medium / high voltage battery pack 501 side.
  • Terminal 364, V terminal 365, LS terminal 366, rear negative electrode terminal 567, front negative electrode terminal 577, and LD terminal 368 are fixed.
  • the terminal group for signal transmission that is, the T terminal 364, the V terminal 365, the LS terminal 366, and the LD terminal 368 has the same configuration as the low / medium voltage battery pack 201 shown in FIG. 7 (A).
  • FIG. 16B is a perspective view showing a state in which the terminal portion 45 and the connection terminal group 560 are fitted to each other.
  • the connection state of the T terminal 364, V terminal 365, LS terminal 366, LD terminal 368 and T terminal 54, V terminal 55, LS terminal 56, and LD terminal 58 for signals is the low / medium voltage battery of the first embodiment. It has the same configuration as the pack 201.
  • the rear positive electrode terminal 562 and the front positive electrode terminal 572 are simultaneously fitted with the positive electrode input terminal 52.
  • the rear negative electrode terminal 567 and the front negative electrode terminal 577 are simultaneously fitted with the negative electrode input terminal 57.
  • the short-circuit terminal portion 59b of the short bar 59 is in a floating state in which it does not contact either the rear positive electrode terminal 562 or the front positive electrode terminal 572.
  • the short-circuit terminal portion 59c of the short bar 59 is also in a floating state (non-contact or insulated state) in which it does not contact either the rear negative electrode terminal 567 or the front negative electrode terminal 577. Therefore, in the mounted state of FIG. 16B, a voltage in which the first cell unit 545 and the second cell unit 546 are connected in parallel, that is, a direct current rated at 36 V, is between the positive electrode input terminal 52 and the negative electrode input terminal 57. It is output.
  • the medium / high voltage battery pack 501 can be mounted on the medium voltage device main body 31 instead of the low / medium voltage battery pack 201.
  • a synthetic resin cover is attached to the lower portion of the front positive electrode terminal 572 so that the short-circuit terminal portion 59b of the short bar 59 does not come into contact with the positive electrode terminals 562 and 572. It may be attached to the lower portion of the rear positive electrode terminal 562.
  • the lower half of the front negative electrode terminal 577 and the rear negative electrode terminal 567 is also provided with some insulating means such as a synthetic resin cover so that the short bar 59 conducts to the front negative electrode terminal 577 and the rear negative electrode terminal 567. It is good not to be able to do it.
  • FIG. 17 is a diagram showing a terminal portion 45 of the medium voltage device main body 31 and a connection terminal group 560 of the medium / high voltage battery pack 501 according to the second embodiment, and FIG. 17A is a perspective view.
  • B) is a rear view seen from the rear side.
  • the short-circuit terminal portion 59b of the short bar 59 is provided with a gap between the left and right arm portions 562a and 562b of the positive electrode terminals 562 and 572 and between the arm portions 572a and 572b (to prevent contact with each other). To be accommodated (positioned).
  • the short-circuit terminal portion 59c of the short bar 59 is located between the left and right arm portions 567a and 567b of the negative electrode terminals 567 and 577, and between the arm portions 577a and 577b. , Each is housed (positioned) with a gap (so that they do not touch).
  • the positive electrode input terminal 52 contacts the arm portions 562a and 562b, and also contacts the arm portions 572a and 572b. Due to these contacts, the positive electrode terminals of the first cell unit 545 and the second cell unit 546 (both see FIG.
  • the negative electrode input terminal 57 contacts the arm portions 567a and 567b, and also contacts the arm portions 577a and 577b. Due to these contacts, the negative electrode terminals of the first cell unit 545 and the second cell unit 546 (both see FIG. 15) are short-circuited to the negative electrode input terminal 57.
  • the T terminal 364, the V terminal 365, and the LS terminal 366 are formed lower than the other terminals in the vertical direction, so that a space for the convex portion 48 when the terminal portion 45 is mounted is secured. Will be done.
  • the shapes of the arm portions 561a, 561b, 562a, and 562b of the rear positive electrode terminals 561 and 562, respectively, can be understood.
  • the arm portions 561a, 561b, 562a, and 562b are formed so as to extend upward from the left and right side surfaces of the base portions 561c and 562c bent in a U shape when viewed from above.
  • the arm portions 561a, 561b, 562a, and 562b are narrowed so as to approach each other toward the upper side of the connection portion of the base portions 561c and 562c, and are refracted so as to spread to the left and right near the upper end. This refracted portion serves as a contact point with the connection terminal on the main body side of the electric device.
  • FIG. 18 is a perspective view showing the configuration of the terminal portion 475 of the high voltage device main body 461 and the connection terminal group 560 of the medium / high voltage battery pack 501 according to the second embodiment
  • FIG. 18A is a perspective view showing the configuration of the connection terminal group 560 of the medium / high voltage battery pack 501. It is a figure which shows the state just before mounting the battery pack 501 (the state before the terminal part 475 is fitted).
  • the positive electrode input terminal 482 and the terminal portion 489b of the short bar 489 are arranged downward from the upper wall of the base portion 476 of the terminal portion 475.
  • the negative electrode input terminal 487 and the terminal portion 489c (not visible in the figure) of the short bar 489 are arranged on the negative electrode terminal side.
  • FIG. 18B is a diagram showing a fitted state between the terminal group of the terminal portion 475 of the high voltage device main body 461 and the connection terminal group 560 of the medium / high voltage battery pack 501.
  • the positive electrode input terminal 482 of the terminal portion 475 is fitted with the rear positive electrode terminal 562, and the negative electrode input terminal 487 of the terminal portion 475 is fitted with the rear negative electrode terminal 567.
  • the terminal portion 489b of the short bar 489 is fitted with the front positive electrode terminal 572, and the terminal portion 489c of the short bar 489 is fitted with the front negative electrode terminal 577.
  • FIG. 19 is a diagram showing a state in which the terminal portion 475 of the high voltage device main body 461 and the connection terminal group 560 of the medium / high voltage battery pack 501 according to the second embodiment are fitted (No. 2).
  • a convex portion 478 for preventing erroneous mounting is formed on the terminal portion 475.
  • the terminal portions (positive electrode terminals 562, 572, negative electrode terminals 567, 757) of the medium / high voltage battery pack 501 are configured to extend upward from the circuit board 550.
  • the short bar 59 and the pair of the terminals corresponding to the short bar 59 are paired so that the terminal portions 59b and 59c of the short bar 59 do not come into contact with the positive electrode terminals 562 and 572 and the negative electrode terminals 567 and 577.
  • the width of the lower side (circuit board 550 side) of the arm portion (for example, 562a, 562b) in the left-right direction is made larger than the thickness of the terminal portions 59b, 59c of the short bar 59, and between the terminal portions 59b, 59c and the arm portion.
  • the terminal portion was formed so as to generate a gap.
  • the width of the pair of arms on the tip side of the terminal portion in the left-right direction is made smaller than the thickness of the terminal portion on the main body side of the electric device.
  • the positive electrode input terminal 482, the negative electrode input terminal 487, and the short bar 489 of the high voltage device main body 61 are medium / high voltage batteries, respectively. It is securely fitted to the rear positive electrode terminal 562, the rear negative electrode terminal 567, the front positive electrode terminal 572, and the front negative electrode terminal 577 of the pack 501. Since the positive electrode input terminal 482, the negative electrode input terminal 487, and the 582 short bar 489 of the high voltage device main body 61 each extend downward from the base portion 476 of the terminal portion 475, they are terminals of the medium / high voltage battery pack 501. It is not affected by the gap between the arms of the portion, and can be securely fitted on the tip side of the arm.
  • FIG. 20 is a schematic view showing the shapes of the terminal portions 15, 45, and 475 on the main body side of the electric device, and is a diagram for explaining the size relationship between them.
  • the external dimensions of the base portion 476 of the terminal portion 475 are length L and height H, and are compatible (however, the presence or absence of the convex portions 48 and 478 for preventing erroneous mounting is different).
  • the terminal portion 45 for 36V is divided into upper and lower parts, and two terminals (positive electrode input terminal 52 and short bar) are divided into the upper and lower parts.
  • the terminal portion 59b) of 59 was arranged.
  • the upper half region is further divided into two front and rear parts, and two terminals (positive electrode input terminal 482 and short bar 489 terminal portion) are divided into the front 1/2 portion and the rear 1/2 portion. 489b) was placed.
  • the electrode portion of the terminal portion 45 for the base 36V medium voltage device main body 31
  • the medium / high voltage battery pack 301 or the medium / high voltage battery pack 501 battery is used.
  • a pack can also be attached.
  • the medium / high voltage battery pack 501 of the second embodiment just like the medium / high voltage battery pack 301 of the first embodiment, it is only attached to either the medium voltage device main body 31 or the high voltage device main body 461. You can switch to the appropriate output voltage with. Therefore, it is possible to provide an electric device system that promotes the spread of the high voltage device body in addition to the medium voltage device body.
  • FIG. 21 is an overall view of an electrical equipment system according to a third embodiment of the present invention.
  • the low voltage battery pack 101 can be attached to the low voltage device main body 1 as shown by the solid line arrow 91 (circle symbol in the figure), but the medium voltage device main body 31 and the high voltage as shown by the dotted line arrows 96 and 98. It cannot be attached to the device body 601 (cross symbol in the figure).
  • the low / medium voltage battery pack 201 can be attached to the low voltage device main body 1 and the medium voltage device main body 31 as shown by the solid line arrows 92 and 93, but is attached to the high voltage device main body 601 as shown by the dotted line arrow 97. Cannot be installed.
  • the battery pack 701 is a battery pack compatible with three voltages (hereinafter referred to as "three-voltage battery pack"), and as shown by solid line arrows 792 to 794, the low voltage device main body 1, the medium voltage device main body 31, and the high voltage device main body 601 It can be attached to any of the above.
  • the three-voltage battery pack 701 automatically selects and outputs a voltage corresponding to the mounted electric device main body (1, 31, 601), that is, 18V, 36V, or 72V.
  • the high-voltage device main body 601 in the third embodiment has a different terminal portion 615 (see FIGS. 27 and 28 described later) from the high-voltage device main body 61 shown in FIG.
  • the medium / high voltage battery pack 301 shown in FIG. 15 is attached to the low voltage device main body 1 and the medium voltage device main body 31. Can be used, but it cannot be attached to the high voltage device main body 601 due to the difference in the shape of the connection terminal portion.
  • the appearance of the trivoltage battery pack 701 is the same as that of the medium / high voltage battery pack 301 shown in FIG. 5, and in particular, it is attached to the electric device main body (1, 31, 601) formed in the trivoltage battery pack 701. Maintains or releases the mounting state of the rail portions 238a and 238b (see FIG. 5), the slot size of the slot group arrangement area 220 (see FIG. 5), and the electrical equipment main body (1, 31, 601) side.
  • the latch mechanism for is compatible.
  • a total of 20 battery cells are housed in the case of the trivoltage battery pack 701.
  • the type of battery cell to be used is a lithium ion battery cell (rated 3.6V)
  • 10 battery cells are connected in series, and two sets of series connections thereof are further connected in parallel.
  • five battery cells are connected in series, and all four sets of series connections are connected in parallel.
  • the trivoltage battery pack 701 can be charged using an external charger (not shown) after being removed from the electric device main body (1, 31, 601).
  • a three-voltage battery pack 701 is possible if a charger for 18V is prepared. Further, even a 36V charger or a 72V charger can charge the three-voltage battery pack 701.
  • a combination of low voltage, medium voltage, and high voltage is configured at 18V, 36V, and 72V, but the present invention is not limited to the combination of these voltages, and low voltage is used.
  • the medium voltage may be twice the low voltage (2 n volt) and the high voltage may be four times the low voltage (4 n volt), with n volts other than 18 V (where n> 0).
  • FIG. 22 is a diagram showing a connection terminal group of the three-voltage battery pack 701 of FIG. 21, FIG. 22A is a perspective view of the circuit board 730 and the connection terminal group 740 as a whole, and FIG. 22B is a perspective view of a large terminal component 721. It is a figure, (C) is a perspective view of a small terminal component 726.
  • the three-voltage battery pack 701 uses five lithium-ion battery cells as one cell unit, and connects the output of each cell unit to the four positive electrode terminals 745 to 748 and the four negative electrode terminals 761 to 764, respectively (details are shown in FIG. 23). Explained in). 741 to 744 (arranged in the order of 741, 742, 743, 744 from the front.
  • positive electrode terminals 745 to 748 and 761 to 764 are positive electrode terminals (C + terminals) for charging, and positive electrode terminal 741 is a fuse (not shown).
  • positive electrode terminals 742 to 744 are similarly connected to the positive electrode terminals 746 to 748 via fuses (not shown).
  • the positive electrode terminal set (741 to 748) and the negative electrode terminal set (761 to 764) are obtained by doubling the number of the positive electrode terminal set and the negative electrode terminal set of the second embodiment shown in FIGS. 15 to 17. Is.
  • the large terminal component 721 shown in (B) and the small terminal component 726 shown in (C) 2 Prepare the type. Then, as shown in FIG. 22A, the small terminal component 726, the large terminal component 721, the small terminal component 726, and the large terminal component 721 are alternately arranged from the front to the rear of the circuit board 730 to form a positive electrode for charging.
  • terminal set (741 to 744) It constitutes a terminal set (741 to 744), a positive electrode set for discharging (745 to 748), and a negative electrode set (761 to 764).
  • the positive and negative terminal groups were divided into four, and the positive electrode or the negative electrode of the 18V cell unit was connected to each terminal.
  • the upper case (not shown) that covers the upper side of the circuit board 730 of FIG. 22 has a shape compatible with the upper case 310 of the battery pack 301 shown in FIG. 5, and has a spacing and shape of eight slots arranged in the left-right direction. Is the same.
  • the positive electrode terminal set (741 to 744) for charging is arranged inside a slot (not shown) having the same shape as the slot 221 shown in FIG.
  • the positive electrode terminal set (745 to 748) for discharging is arranged inside a slot (not shown) having the same shape as the slot 222 shown in FIG.
  • the negative electrode terminal set (761 to 764) is arranged inside a slot (not shown) having the same shape as the slot 227 shown in FIG.
  • the slots 222 and 227 shown in FIG. 5 may be provided with a dividing wall so as to be divided into two in the vertical direction.
  • the positive electrode input terminal 52 and the negative electrode input terminal 57 which are power supply terminals, are on the upper side (first slot) of the slot. Is inserted, and the terminal portions 59b and 59c of the short bar 59 are inserted into the lower side (second slot) of the slot.
  • the battery pack 301 and the high voltage device main body 61 are connected, as shown in FIG.
  • the terminal portions 89b and 89c of the short bar 89 are inserted, and none of the terminals of the high voltage device main body 61 is inserted into the lower stage side of the slot.
  • the split wall may be integrated with or separate from the housing of the battery pack 301.
  • Three signal terminals (754 to 756) are provided between the positive electrode terminal group (745 to 748) and the negative electrode terminal group (761 to 764) of the circuit board 730. Further, one signal terminal (758) is provided on the left side of the negative electrode terminal group (761 to 764).
  • the three signal terminals are T terminal 754, V terminal 755, and LS terminal 756, and their shapes and functions are the same as those of T terminal 264, V terminal 265, and LS terminal 266 shown in FIGS. 7 to 8.
  • the signal terminal on the left side of the negative electrode terminal group (761 to 764) is the LD terminal 758, and its shape and function are the same as those of the LD terminal 268 shown in FIGS. 7 to 8.
  • FIG. 22B is a diagram showing a large terminal component 721.
  • the large terminal component 721 is a component used as the positive electrode terminals 742, 744, 746, 748 and the negative electrode terminals 762, 764 shown in FIG. 23.
  • the large terminal component 721 is an integral piece of metal, and is manufactured here by stamping a metal plate.
  • the large terminal component 721 mainly has three parts, that is, the arm portions 721a and 721b, the base portion 721c, and the leg portions 721d and 721e.
  • connection terminal piece is the shape of the arms 721a and 721b, and the distance d2 at the connection with the base 721c, but the distance between the arms 721a and 721b in the left-right direction narrows as it goes upward. At the closest point, they are close to each other so as to be d4 (here, d4 ⁇ d2). Further, when the closest approach point is exceeded, the distance between the left and right arm portions 721a and 721b widens as it goes upward, and becomes d5 (d4 ⁇ d5 ⁇ d2). The distance d1 between the legs 721d and 721e and the distance d2 between the connection portion between the base portion 721c and the arm portion are the same.
  • the base portion 721c is a portion connecting the lower extension portions of the left and right arm portions 721a and 721b formed in a prismatic shape, and is formed in a solid shape having a predetermined plate thickness.
  • Two legs 721d and 721e extend below the base portion 721c.
  • the legs 721d and 721e are large terminal parts by penetrating a through hole (not visible in the figure) formed in the circuit board 730 to the lower side and soldering to the circuit pattern on the lower side of the circuit board 730. Formed to secure the 721 to the circuit board 730.
  • the thickness of the legs 721d and 721e in the anteroposterior direction is not as thick as that of the arms 721a and 721b, but is formed thinner.
  • the bottom surface of the base portion 721c is formed flat, and the bottom surface is formed so as to be in good contact with the circuit board 730 and to be stable.
  • FIG. 22C is a diagram showing a small terminal component 726.
  • the small terminal component 726 is a component used as the positive electrode terminals 741, 743, 745, 747 and the negative electrode terminals 761, 763 shown in FIG. 22 (A).
  • the small terminal component 726 is an integrated product manufactured by stamping metal like the large terminal component 721.
  • the small terminal component 726 mainly has three parts, that is, the arm portions 726a and 726b, the base portion 726c, and the leg portions 726d and 726e.
  • the distance between the small terminal parts 726 in the left-right direction at the connection portion with the base portion 726c is d7, but the distance between the arm portions 726a and 726b in the left-right direction becomes narrower as it goes upward, and becomes d8 at the closest point. Close (here, d8 ⁇ d7). Further, when the closest approach point is exceeded, the distance between the left and right arm portions 726a and 726b widens as it goes upward, and becomes d9 (d8 ⁇ d7 ⁇ d9).
  • the distance d6 between the legs 726d and 726e and the distance d7 between the connection between the base 721c and the arm are the same.
  • Two legs 726d and 726e extend below the base portion 726c.
  • the legs 726d and 726e are small terminal parts by penetrating a through hole (not visible in the figure) formed in the circuit board 730 to the lower side and soldering to the circuit pattern on the lower side of the circuit board 730. Formed to secure the 726 to the circuit board 730.
  • the thickness of the legs 726d and 726e in the anteroposterior direction is formed as thin as the legs 721d and 721e.
  • the height h1 from the upper end of the base portion 726c of the fitting portion of the arm portions 726a and 726b of the small terminal component 726 is the vertical center position of the first short bar 631 (see FIG. 25) described later and the second described later. It is almost the same as the position near the lower end of the terminal portion of the short bar 633 of No. 3 (see FIG. 25).
  • the distance d3 between the arm portions 721a and 721b is set to the first to third short bars 631 to 633 (see FIG. 23 to be described later).
  • the positive electrode input terminal 622 and the negative electrode input terminal 627 have a sufficient size in the left-right direction (for example, the interval d3 is at least twice the width in the left-right direction).
  • the height h2 from the upper end of the base portion 721c of the fitting portion of the arm portions 721a and 721b of the large terminal component 721 is larger than the height h1 of the small terminal component 726 (for example, the height h2 is the height h). More than twice 1 ).
  • FIG. 23 (A) is a connection circuit diagram between the three-voltage battery pack 701 and the low-voltage device main body 1.
  • the trivoltage battery pack 701 has four sets of cell units 771 to 774. Similar to the first and second embodiments, each cell unit 771 to 774 has five battery cells connected in series, and each cell unit has an output of 18V.
  • the voltage (unit volt, 18V) shown at the uppermost end and the lowermost end of each cell unit (five battery cells) is a potential with respect to ground (0V). Further, the voltage shown near the connection terminals (22, 27) is also a potential with respect to ground (0V).
  • the positive electrode of the first cell unit 771 is connected to the positive electrode terminal 745, and the negative electrode is connected to the negative electrode terminal 764.
  • the positive electrode of the second cell unit 772 is connected to the positive electrode terminal 746, the negative electrode is connected to the negative electrode terminal 761, the positive electrode of the third cell unit 773 is connected to the positive electrode terminal 747, and the negative electrode is connected to the negative electrode terminal 762.
  • the positive electrode of the fourth cell unit 774 is connected to the positive electrode terminal 748, and the negative electrode is connected to the negative electrode terminal 763.
  • the positive electrode input terminal 22 and the negative electrode input terminal 27 are terminals for 18V input used in the low voltage device main body 1 described with reference to FIG. 7.
  • the positive electrode input terminal 22 is in contact with all four positive electrode terminals 745 to 748, and the negative electrode input terminal 27 is in contact with all four negative electrode terminals 761 to 764.
  • the positive electrode terminals 745 and 747 are in the lower half region of the positive electrode input terminal 22.
  • the positive electrode terminals 746 and 748 are in contact with each other in the upper half region of the positive electrode input terminal 22.
  • the negative electrode terminals 761 and 763 are in contact with each other in the lower half region of the negative electrode input terminal 27, and the negative electrode terminals 762 and 764 are in contact with each other in the upper half region of the negative electrode input terminal 27. From the above connection state, 18V in which four cell units 771 to 774 are connected in parallel is output from the three-voltage battery pack 701 to the electric device main body 1.
  • FIG. 23B is a connection circuit diagram between the three-voltage battery pack 701 and the medium-voltage device main body 31.
  • the connections to the cell units 771 to 774 and the positive electrode terminals 745 to 748 and the negative electrode terminals 761 to 744 are the same as those in FIG. 23 (A).
  • the medium voltage device main body 31 for 36V shown in FIG. 8 is connected.
  • the positive electrode terminals 746 and 748 using the large terminal component 721 come into contact with the positive electrode input terminal 52
  • the positive electrode terminals 745 and 747 using the small terminal component 726 come into contact with the terminal portion 59b of the short bar 59.
  • the negative electrode terminals 762 and 764 using the large terminal component 721 come into contact with the negative electrode input terminal 57
  • the negative electrode terminals 761 and 763 using the small terminal component 726 come into contact with the terminal portion 59c of the short bar 59.
  • the cell units 771 and 773 are connected in parallel to form the low potential side (between 0V and 18V)
  • the cell units 772 and 774 are connected in parallel to form the high potential side (between 18V and 36V).
  • a direct current having a rated voltage of 36 V is connected between the positive electrode input terminal 52 and the negative electrode input terminal 57. Is output.
  • the positive electrode input terminal 52 and the negative electrode input terminal 57 correspond to "medium voltage parallel terminals”
  • the short bar 59 corresponds to "medium voltage series terminals”.
  • FIG. 24A is a connection circuit diagram of the three-voltage battery pack 701 and the high-voltage device main body 601 according to the third embodiment of the present invention
  • FIG. 24B is a terminal portion in the high-voltage device main body 601 of FIG. 21. It is a perspective view which shows the state which the power terminal part of 615 and the connection terminal group 740 are fitted.
  • the terminal portion 615 of the high voltage device main body 601 is provided with three short bars 631, 632, and 633 in addition to the positive electrode input terminal 622 and the negative electrode input terminal 627.
  • the short bars 631, 632, and 633 have the same functions as the short bars 59 shown in the medium voltage device main body 31 for 36V shown in FIG.
  • the first short bar 631 short-circuits the positive electrode terminal 745 and the negative electrode terminal 761
  • the second short bar 632 short-circuits the positive electrode terminal 746 and the negative electrode terminal 762
  • the third short bar 633 short-circuits the positive electrode terminal 747 and the negative electrode terminal 763. Is short-circuited.
  • a circuit is formed in which the first cell unit 771 to the fourth cell unit 774 are all connected in series, and a direct current of 72 V is generated between the positive electrode input terminal 622 and the negative electrode input terminal 627. It is output.
  • FIG. 24B is a partially enlarged view of FIG. 24A, and the positive electrode input terminal 622 is composed of a terminal portion 622a, a cast portion 622b, and a connection portion 622c.
  • the cast portion 622b is formed between the terminal portion 622a and the connection portion 622c, and is a portion cast into the resin of the terminal 615.
  • the negative electrode input terminal 627c is also composed of a terminal portion 627a, a cast portion 627b (see FIG. 28 described later for reference numerals), and a connection portion 627c. Similar to the 36V short bar 59 shown in FIG.
  • the first short bar 631 has a U-shape when viewed from above, and is a portion in contact with the positive electrode terminal 745 and the negative electrode terminal 761 (described later).
  • the terminal portions 631b and 631c) shown in FIG. 26 extend horizontally and from the front to the rear.
  • the second short bar 632 also has a U-shape when viewed from above, and is in contact with the positive electrode terminal 746 and the negative electrode terminal 762 (terminals shown in FIG. 26 below).
  • the portions 632b and 632c) are formed so as to extend horizontally and from the front to the rear.
  • the horizontal portion 631a of the first short bar 631 and the horizontal portion 632a of the second short bar 632 are both arranged so as to extend in the left-right direction so as to be separated from each other by a predetermined distance in the vertical direction and the front-back direction. Be placed.
  • the third short bar 633 has a U-shape when viewed from the front, similar to the 72V short bar 489 shown in FIG. ,
  • the positive electrode terminal 747 and the negative electrode terminal 763 come into contact with each other.
  • the horizontal portion 633a of the third short bar 633 is arranged so as to extend in the left-right direction.
  • the positive electrode input terminal 622 has a connection portion 622c having a through hole near the upper end, and a terminal portion 622a that fits with the arm portions 748a and 748b of the positive electrode terminal 748 (see FIG. 26 below for reference numerals) near the lower end.
  • connection portion 622c and the terminal portion 622a becomes a cast portion 622b cast into the resin portion at the terminal portion 615 (see FIG. 28 described later).
  • the negative electrode input terminal 627 also has the same shape as the positive electrode input terminal 622, and a connection portion 627c having a through hole near the upper end is formed.
  • the three-voltage battery pack 701 can be used not only for the new high-voltage device main body 601 compatible with 72V, but also for the electric device main body 1 for 18V and the electric device main body 31 for 36V. There is a merit that it becomes possible to correspond to all electric equipment main bodies (1, 31, 601) just by purchasing. Further, since the three-voltage battery pack 701 can also be charged using a charger for 18V, it is not necessary to prepare a dedicated charger for 72V, and the usability is very good.
  • FIG. 25A is a side view showing a state before the terminal portion 615 of the high voltage device main body 601 of FIG. 21 and the power terminal portion (745 to 745) of the trivoltage battery pack 701 are fitted.
  • the portion provided on the terminal portion 615 (see FIG. 28 described later) on the high voltage device main body 601 side is shaded so as to be easily distinguished from the portion provided on the trivoltage battery pack 701 side. ..
  • the terminal portion 615 is brought closer to the direction of the arrow 635, the terminal portion 622a of the positive electrode input terminal 622 is fitted to the positive electrode terminal 748, and the terminal portion 633b of the third short bar 633 is fitted. Fits into the positive electrode terminal 747, the terminal portion 632b of the second short bar 632 fits into the positive electrode terminal 746, and the terminal portion 631b of the first short bar 631 fits into the positive electrode terminal 745.
  • FIG. 25B is a side view showing a state after the terminal portion 615 and the power terminal portion (745 to 745) of the three-voltage battery pack 701 are fitted from the state of (A).
  • the width in the front-rear direction of the positive electrode terminals 745 to 748 and the distance between them are shown numerically (unit: mm) on the upper side.
  • the small terminal component 726 shown in FIG. 22 (C) is used as the positive electrode terminals 745 and 747
  • the large terminal component shown in FIG. 22 (B) is used as the positive electrode terminals 746 and 748. 721 is provided.
  • the lengths of the positive electrode terminals 745 to 748 in the front-rear direction are 1.2 mm, and they are arranged so as to be non-contact with each other at regular intervals (1.3 mm intervals). That is, the distance between the positive electrode terminals 745 to 748 was made larger than the length (thickness of the arm) in the anteroposterior direction in the arms of the positive electrode terminals 745 to 748.
  • the length of the terminal portion 622a of the positive electrode input terminal 622 in the front-rear direction is 0.9 mm, which is slightly smaller than the length of the positive electrode terminal 748 in the front-rear direction of 1.2 mm.
  • the front-rear thickness of the third short bar 633 is set to 1.2 mm, which is the same as the front-rear thickness of the arm portion of the positive electrode terminal 747.
  • the terminal portion 615 moves linearly in the direction of the arrow 635. Due to this movement, when the three-voltage battery pack 701 is attached, the positive electrode input terminal 622 moves on the upper side of the positive electrode terminal 745 in the direction of arrow 635 in a non-contact manner, and is temporarily fitted with the arm of the positive electrode terminal 746.
  • the third short bar 633 temporarily engages with the arms 745a and 745b of the positive electrode terminal 745 and then moves further, and then moves further with the arms 746a and 746b of the positive electrode terminal 746. After being temporarily fitted, it moves further and fits with the arms 747a and 747b of the positive electrode terminal 747 (see FIG. 26B for reference numerals) at the final position of the required movement amount in the mounting direction 635. ..
  • the second short bar 632 moves without touching the upper side of the positive electrode terminal 745 in the direction of arrow 635 when moving as shown by the arrow 635, and the arm portions 746a and 746b of the positive electrode terminal 746 at the mounting position (reference numerals are shown in the figure).
  • the first short bar 631 is simply fitted to the arm portions 745a and 745b of the positive electrode terminal 745 (see FIG. 26B for reference numerals) at the mounting position when moving as shown by the arrow 635, and the positive electrode terminals 746 to 748 are used. Has nothing to do with.
  • the four positive electrode terminals 745 to 758 have been described with reference to FIG. 25, the shapes of the negative electrode terminals 761 to 764 and the fitted state of the short bars 631 to 633 are the same as those of the four positive electrode terminals 745 to 758. It becomes.
  • the positive electrode input terminal 622 on the electric device main body 1 side interferes with the positive electrode terminal 746 in addition to the positive electrode terminal 748 to be fitted.
  • the third short bar 633 interferes with the positive electrode terminals 745 and 746 in addition to the positive electrode terminals 747 to be fitted.
  • the second short bar 633 is fitted only to the positive electrode terminal 746 to be fitted and does not interfere with the other positive electrode terminals 745, 747, 748.
  • the first short bar 631 is fitted only to the positive electrode terminal 745 to be fitted, and does not interfere with the other positive electrode terminals 746 to 748.
  • FIG. 26 (A) is a front view of FIG. 24 (B). From the figure of (A), the sizes of the positive electrode terminal 745 and the negative electrode terminal 761 using the small terminal component 726 and the positive electrode terminal 746 and the negative electrode terminal 762 using the large terminal component 721 can be understood.
  • the inner width of the positive electrode terminal group (745 to 748) and the negative electrode terminal group (761 to 764) in the left-right direction is 30 mm, and this interval is the conventional battery pack 101 for 18V (see FIG. 3) and the battery for 36V.
  • the distance between the positive electrode input terminal and the negative electrode input terminal of the pack 201 (see FIG. 3) is the same.
  • the first short bar 631 has a horizontal portion 631a extending in the left-right direction, a terminal portion 631b that fits the positive electrode terminal 745 and a terminal that fits the negative electrode terminal 761 from both ends of the horizontal portion 631a toward the rear.
  • Part 631c is formed.
  • the position of the terminal portion 631b in the height direction is arranged so as to include the closest portion (fitting portion shown in FIG. 22C) of the arm portions 745a and 745b of the positive electrode terminal 745.
  • the position of the terminal portion 631c in the height direction is arranged so as to include the closest portion (fitting portion shown in FIG. 22C) of the arm portions 761a and 761b of the negative electrode terminal 761.
  • the second short bar 632 is fitted with a horizontal portion 632a extending in the left-right direction, a terminal portion 632b extending rearward from both ends of the horizontal portion 632a and fitting with the positive electrode terminal 746, and a negative electrode terminal 762.
  • a matching terminal portion 632c is formed.
  • the position of the terminal portion 632b in the height direction is arranged so as to include the closest portion (fitting portion shown in FIG. 22B) of the arm portions 746a and 746b of the positive electrode terminal 746.
  • the position of the terminal portion 632c in the height direction is arranged so as to include the closest portion (fitting portion shown in FIG. 22B) of the arm portions 762a and 762b of the negative electrode terminal 762.
  • the vertical distance between the first short bar 631 and the second short bar 632 is 3.7 mm.
  • the vertical position of the second short bar 632 is above the positive electrode terminals 745 and 747 (see FIG. 25) and the negative electrode terminals 761 and 763, so that the positive electrode terminals 745 and 747 and the negative electrode terminals are located above. There is no risk of interfering with 761 and 763.
  • the first short bar 631 has a height that interferes with the positive electrode terminals 746 to 748 and the negative electrode terminals 762 to 764 in terms of height, but as shown in FIG. Since the short bar 632 of 2 is separated from the positive electrode terminal 746 and the negative electrode terminal 762 in the front-rear direction, there is no possibility of interference.
  • the third short bar 633 includes a horizontal portion 633a extending in the left-right direction, a terminal portion 633b extending downward from both ends of the horizontal portion 633a and fitting with the positive electrode terminal 747 (see FIG. 25). A terminal portion 633c that fits with the negative electrode terminal 763 (see FIG. 25) is formed.
  • the horizontal portion 633a of the third short bar 633 is located above the positive electrode terminals 746 and 748 and the negative electrode terminals 762 and 764 using the large terminal component 721. As a result, it becomes easy to cast the horizontal portion 633a of the third short bar 633 into the resin portion of the terminal portion 615.
  • the vertical distance between the second short bar 632 and the third short bar 633 is 3.4 mm.
  • the lower end position of the terminal portion 633b extends slightly below the closest portion (fitting portion) of the arm portions 747a and 747b of the positive electrode terminal 747.
  • the lower end position of the terminal portion 633c extends slightly below the closest portion (fitting portion) of the arm portions 763a and 763b of the negative electrode terminal 763.
  • FIG. 26 (B) is a top view of FIG. 24 (B).
  • the positive electrode terminals 745 to 748 are arranged at equal intervals in the front-rear direction, and the respective arm portions (for example, 748a and 748b) are arranged so as to be separated in the left-right direction.
  • the contact surface between each arm of the positive electrode terminals 745 to 748 and the terminal group has a positional relationship orthogonal to the mounting direction.
  • the negative electrode terminals 761 to 764 are arranged at equal intervals in the front-rear direction, and the respective arm portions (for example, 764a and 764b) are arranged so as to be separated in the left-right direction.
  • the contact surface between each arm of the negative electrode terminals 761 to 764 and the terminal group is arranged so as to be orthogonal to the mounting direction.
  • the distance between the first short bar 631 and the second short bar 632 in the front-rear direction is 1.5 mm.
  • the distance between the second short bar 632 and the third short bar 633 in the front-rear direction is 3.4 mm.
  • the second short bar 632 does not interfere with the first short bar 631.
  • the horizontal portion 632a of the above can be cast into the resin portion of the terminal portion 615.
  • FIG. 27 is a perspective view of the terminal portion 615 of the high voltage device main body 601 of FIG. 21 as viewed from the rear side
  • FIG. 27B is a perspective view of a group of connection terminals cast into the resin portion of the resin portion of FIG. Is.
  • the terminal portion 615 is fixed by casting a plurality of connection terminal pieces into synthetic resin, and has a substantially rectangular parallelepiped and solid base portion 615a and an upper portion of the base portion 615a extending forward. It is formed including the upper wall portion 615b formed in the shape of a wall.
  • a positive electrode input terminal 622 and a negative electrode input terminal 627 are cast inside the upper wall portion 615b, and the respective connection portions 622c and 627c are exposed above the upper wall portion 615b.
  • the T terminal 624, the V terminal 625, the LS terminal 626, and the LD terminal 628 are cast into the upper wall portion 615b and the base portion 615a, and the connection portions 624c, 625c, and 626c are cast above the upper wall portion 615b. 628c is exposed.
  • the horizontal portion 633a of the third short bar 633 is cast into the upper wall portion 615b having a predetermined thickness. From the lower surface of the upper wall portion 615b, the terminal portion 622a of the positive electrode input terminal 622, the terminal portion 627a of the negative electrode input terminal 627 (see FIG. 28 described later), and the terminal portions 633b and 633c of the third short bar 633 (described later). (See FIG. 28) is exposed so as to extend downward. On the front side of the base portion 615a, the terminal portions 631b and 631c of the first short bar 633 (see FIG. 28 described later) are exposed so as to extend in the horizontal direction, and the terminal portions of the second short bar 632 are exposed. 632b and 632c (see FIG. 28, which will be described later) are exposed so as to extend in the horizontal direction.
  • FIG. 27 (B) is a perspective view of a group of connection terminals cast into the resin portion of (A).
  • Each of the four terminals for signals (T terminal 624, V terminal 625, LS terminal 626, LD terminal 628) has cast portions 624b to 626b so that the connection portions 624c to 626c and 628c are exposed from the upper wall portion 615b.
  • 628b is cast into the upper wall portion 615c, and the rear half of the terminal portion is cast into the base portion 615a.
  • notches (624d, 628d, etc.) curved so as not to interfere with the horizontal portion 632a of the second short bar 632 are formed. Will be done.
  • the vertical size of the exposed portion of the T terminal 624, the V terminal 625, the LS terminal 626, and the LD terminal 628 is about half. ..
  • the T terminal 364, V terminal 365, LS terminal 366, and LD terminal 368 on the medium / high voltage battery pack 501 side are fitted with the corresponding terminals on the battery pack (101, 201, 701) side. Since the position is near the lower side, even a terminal shape as shown in FIG. 27 (B) can be fitted well. Since each cast portion of the T terminal 624, the V terminal 625, the LS terminal 626, and the LD terminal 628 and the horizontal portion 632a of the second short bar 632 are cast with synthetic resin, each terminal and the second short The bars 632 do not touch each other.
  • the positive electrode input terminal 622 and the negative electrode input terminal 627 extend downward from the upper wall portion 615b. It is a thin rod-shaped connection terminal with an elongated prismatic shape.
  • the terminal portions 633b and 633c of the third short bar 633 are arranged behind the positive electrode input terminal 622 and the negative electrode input terminal 627, and these terminal portions 633b and 633c are parallel to the positive electrode input terminal 622 and the negative electrode input terminal 627. It is arranged and extends downward from the upper wall portion 615b.
  • the terminal portions 632b and 632c of the second short bar 632 are exposed on the rear upper side of the terminal portions 633b and 633c of the third short bar 633, and the terminal portions 631b and 631c of the first short bar 631 are exposed on the rear lower side. Is exposed.
  • the periphery of the terminal portion 632b and the vicinity of the root of the terminal portion 631b is covered with a resin cover 616b integrally formed with the base portion 615a, and the periphery of the terminal portion 632c and the terminal portion 631c near the root is covered with the base portion 615a. It is covered and insulated by the integrally formed resin cover 616e.
  • the horizontal portion 631a of the first short bar 631 is entirely covered by the resin cover 616c extending in the left-right direction
  • the horizontal portion 632a of the second short bar 632 is entirely covered by the resin cover 616d extending in the left-right direction. Is covered.
  • the rear ends (casting portions) of the terminal portions of the T terminal 624, the V terminal 625, the LS terminal 626, and the LD terminal 628, which are terminals for signal transmission, are set to the base portion 615a, respectively. It is fixed by casting.
  • the upper portion of the T terminal 624, the V terminal 625, the LS terminal 626, and the LD terminal 628 does not reach the resin portion of the upper wall portion 615b. That is, the width in the vertical direction is small.
  • a convex portion 618 is formed in the center of the front side of the upper wall portion 615b.
  • the convex portion 618 is a first obstruction portion for preventing erroneous mounting, which is configured to prevent the low voltage battery pack 101, which does not correspond to the high voltage device main body 601, from being mounted on the terminal portion 615.
  • a second obstruction portion (not visible in FIG. 28) (not visible in FIG. 28) so that the low / medium voltage battery pack 201 (see FIG. 4) cannot be erroneously attached to the high voltage equipment main body 601. It is formed.
  • FIG. 28B is a diagram showing the shapes of the power connection terminals (622, 627) to be cast and the first to third short bars 631 to 633, omitting the illustration of the resin portion of the terminal portion 615. Is.
  • the first to third short bars 631 to 633 correspond to the high voltage series terminals in the present invention.
  • the positive electrode input terminal 622 has a casting portion 627b on the upper wall portion 615b between the terminal portion 622a and the upper connection portion 622c.
  • the space between the terminal portion 627a and the upper connecting portion 627c is a casting portion 622b to the upper wall portion 615b.
  • the horizontal portion 633a of the third short bar 633 is completely cast in the upper wall portion 615b, and the terminal portions 633b and 633c extending in the vertical direction of the third short bar 633 have a part on the upper side of the upper wall portion 615b. It is cast inside.
  • the horizontal portions 631a and 632a of the first and second short bars 621 and 632 are cast into the base portion 615a.
  • the positive electrode input terminal 622, the negative electrode input terminal 627, and the first to third short bars 631 to 633 are all firmly fixed by being cast into the terminal portion 615.
  • FIG. 29 is a schematic diagram showing the shapes of the terminal portions 15, 45, and 615, and is a diagram for explaining the size relationship between them.
  • the external dimensions of the terminal arrangement area of the terminal portion 15 are length L and height H, and are compatible with the terminal portions 15 and 45 (however, the presence or absence of a convex portion for preventing erroneous mounting is different, but here. Not mentioned).
  • the shapes of the terminal portions 15 and 45 are the same as those of the first and second embodiments described with reference to FIGS. 14 and 20.
  • the positive electrode input terminal 622 and the three short bars 631 to 633 are arranged.
  • the positive electrode input terminal 622 fits with the positive electrode terminal 748 within the range of the upper half and the front half.
  • the terminal portion 633b of the third short bar 633 comes into contact with the positive electrode terminal 747 within the range of the lower half and the front half.
  • the terminal portion 632b of the second short bar 632 comes into contact with the positive electrode terminal 746 within the range of the upper half and the rear half.
  • the terminal portion 631b of the first short bar 631 comes into contact with the positive electrode terminal 745 within the range of the lower half and the rear half.
  • the terminal arrangement areas having a height H and a length L of the terminal portion 615 are divided into four upper and lower front and rear parts so as to be fitted to the connection terminals on the three-voltage battery pack 701 side in each of the four ranges.
  • the positive electrode input terminal 622 and the first to third short bars 631 to 633 were arranged.
  • the electrode portion of the terminal portion 45 for 36V (medium voltage equipment main body 31), which is the base, is divided into four parts and used, so that the positive electrode input terminal 622, the negative electrode input terminal 627, and the first to third terminals are used.
  • the short bars 631 to 633 and the signal terminal groups 624 to 626 and 628 could be efficiently arranged.
  • the battery pack 701 can be switched to an appropriate output voltage simply by attaching the battery pack 701 to any one of the low voltage device main body 1, the medium voltage device main body 31, and the high voltage device main body 601. I was able to realize the system. In particular, it was possible to realize a three-voltage battery pack 701 capable of supporting three voltages without increasing the area of the portion where the connection terminal is mounted and without increasing the area of the circuit board 730. That is, the installation space on the circuit board 730 of the positive electrode terminals 741 to 748 and the negative electrode terminals 761 to 764 of the three-voltage battery pack 701 is used as the positive electrode terminal of the conventional battery pack (voltage fixed type 101, two-voltage battery pack 201, 301).
  • the signal terminal should be arranged in the space in the left-right direction between the positive electrode terminal and the negative electrode terminal in the circuit board 730 as in the conventional battery pack. Can be done. Therefore, even if the number of terminals of the positive electrode terminal and the negative electrode terminal increases, it is possible to suppress an increase in the installation space of those terminals, so that it is possible to suppress an increase in the size of the circuit board 730.
  • the terminal portions (positive electrode terminal, negative electrode terminal, short bar) of the three-voltage battery pack 701 are configured to extend in the vertical direction (upward from the circuit board 730). Therefore, the dimensions of the terminal portion in the front-rear direction can be suppressed, and many terminals can be arranged in the terminal arrangement area extending in the front-rear direction as in the conventional battery pack. As a result, it is possible to suppress the increase in size of the circuit board 730. Further, the terminal portion of the trivoltage battery pack 701 is configured to extend in the vertical direction, and the positive electrode terminals 745 to 748 and the negative electrode terminals 761 to two types (large terminal component 721 and small terminal component 726) having different dimensions in the vertical direction. 764 is used.
  • the positive electrode input terminal 22 and the negative electrode input terminal 27 of the low voltage device main body 1 have a large vertical width, so that the positive electrode input terminal 22 and the negative electrode input terminal 27 are connected. It is securely fitted to all the positive electrode terminals 745 to 748 and the negative electrode terminals 761 to 764, respectively.
  • the positive electrode input terminal 52 and the negative electrode input terminal 57 are fitted to the positive electrode terminal and the negative electrode terminal made of the large terminal component 721, respectively, and the positive electrode terminal made of the small terminal component 726.
  • the width in the vertical direction is set so that it does not fit (do not reach) the negative electrode terminal.
  • the terminal portions 59b and 59c of the short bar 59 are configured to extend in the front-rear direction, and are provided at positions corresponding to the fitting portions of the positive electrode terminal and the negative electrode terminal made of the small terminal component 726. Therefore, it is fitted to the positive electrode terminal and the negative electrode terminal made of the small terminal component 726, but not to the large terminal component 721.
  • the large terminal component 721 is formed so that the width dimension of the lower side of the pair of arms is larger than the thickness of the short bar 59 so as not to come into contact with the short bar 59, as in the second embodiment (for example, FIG. 15). Because it is. As a result, the terminals 52, 57 and the short bar 59 of the medium voltage electric device 31 are securely fitted only to the corresponding terminals.
  • the positive electrode input terminal 622, the negative electrode input terminal 627, and the first to third short bars 631 to 633 are the corresponding positive electrode terminal and the negative electrode terminal of the three-voltage battery pack 701, respectively. Since it is arranged so that it can be securely fitted, it will not be fitted to other terminals. This can be realized by configuring the terminals of the three-voltage battery pack 701 with the large terminal component 721 and the small terminal component 726. Further, the number of terminals (positive electrode input terminal, positive electrode input terminal, short bar) of the high voltage device main body 601 will be increased compared to the existing electric device main body (for example, the medium voltage device main body 31), but the shape of the terminal portion is changed.
  • the terminal part 615 follows the shape of the terminal part (for example, the terminal part 45 of the medium voltage equipment main body 31) used in the existing electric equipment main body, so that the volume and weight of the terminal part 615 can be increased. The increase in cost can be suppressed.
  • the terminal portion of the trivoltage battery pack 701 is a positive electrode and negative electrode input terminal of the low voltage device main body 1, a positive electrode input terminal, a negative electrode input terminal and a short bar of the medium voltage device main body 31. Since the terminal structure corresponding to the positive electrode input terminal, the negative electrode input terminal, and the three short bars of the high voltage device main body 601 can be provided, it is possible to provide an electric device system corresponding to a wide range of voltages. In addition, compatibility with existing voltage-fixed battery packs and dual-voltage battery packs can be maintained, and it is possible to provide an electrical equipment system with improved compatibility and versatility. Further, it is possible to provide an electric device system using a three-voltage battery pack.
  • FIG. 30 is a perspective view showing the arrangement of battery cells in the three-voltage battery pack 701 of FIG. 21.
  • the first cell unit 771 five battery cells 771a to 771e are arranged as shown in the figure, and the positive electrode and the negative electrode of the adjacent battery cells are electrically connected in series by a metal connection tab.
  • the battery cell is actually fixed by a holding member made of synthetic resin called a separator, the illustration of the separator is omitted here.
  • + (plus) is displayed on the positive electrode side of the battery cell
  • -(minus) is displayed on the negative electrode side.
  • the positive electrode output is taken out from the battery cell 771a as shown by an arrow and wired to the positive electrode terminal 745 (the description of the specific wiring path is omitted).
  • the second to fourth cell units 772 to 774 are also wired in the same manner, and the respective positive electrode outputs are wired from the battery cell 772a to the positive electrode terminal 746 as shown by the arrow, and from the battery cell 773a to the positive electrode terminal 747 as shown by the arrow. It is wired and wired from the battery cell 774a to the positive electrode terminal 748 as shown by the arrow.
  • the negative electrode side of the first to fourth cell units 771 to 774 is wired from the left side surface of the three-voltage battery pack 701, and is wired from the left side of the battery cell 771e to the negative electrode terminal 761 as shown by an arrow, and is wired to the negative electrode terminal 761 from the left side of the battery cell 771e. Is wired to the negative electrode terminal 762, from the left side of the battery cell 773e to the negative electrode terminal 763, and from the left side of the battery cell 774e to the negative electrode terminal 764.
  • the present invention has been described above based on the examples, the present invention is not limited to the above-mentioned examples, and various modifications can be made without departing from the spirit of the present invention.
  • the combination of low voltage, medium voltage, and high voltage is realized at the ratings of 18V, 36V, and 72V, but not only these combinations but also nV, 2nV, and 4nV (however, n> 0). )
  • the present invention can be easily applied to a group of battery packs having other voltages.
  • the type, shape, and voltage of the battery cells housed in each battery pack are arbitrary, and an electric device system may be realized by using a battery cell other than the cylindrical lithium ion battery.
  • LD terminal 89 ... Short bar, 89a ... Connection part, 89b, 89c ... Short circuit terminal part, 101 ... Low voltage battery pack, 102 ... Lower case, 105 ... slit, 110 ... upper case, 111 ... lower surface, 114 ... stepped portion, 115 ... upper stage surface, 120 ... slot group arrangement area, 121 to 128 ... slot, 131 ... stopper portion, 132 ... raised portion, 133 ... Rear slope, 134 ... Slit, 138a, 138b ... Rail part, 141a, 141b ... Latch button, 142a, 142b ... Locking part, 145 ... First cell unit, 146 ... Second cell unit, 201 ...
  • Low / medium Voltage battery pack 201 ... Battery pack, 202 ... Lower case, 210 ... Upper case, 211 ... Lower surface, 215 ... Upper surface, 216 ... Recessed 217a, 217b ... Convex part, 238a ... Rail part, 241a ... Latch, 245 ... 1st cell unit, 245a, 245e ... Battery cell, 246 ... 2nd cell unit, 246a, 246e ... Battery cell, 250 ... Circuit board, 260 ... Connection terminal group, 261,262 ... Upper positive electrode terminal, 262a, 262b ... Arm, 262c ... Leg, 264 ... T terminal, 265 ... V terminal, 266 ...
  • Negative electrode terminal 761a, 761b, 762a, 762b ... Arm, 763a, 763b, 764a, 764b ... Arm, 771 to 774 ... Cell unit, 771a to 771e, 772a to 772e ... Battery cells, 773a to 773e, 774a to 774e ... Battery cells

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  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Computer Hardware Design (AREA)
  • Battery Mounting, Suspending (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
PCT/JP2021/032425 2020-09-30 2021-09-03 電気機器システム及び電池パック Ceased WO2022070766A1 (ja)

Priority Applications (4)

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EP21875068.5A EP4224606A4 (en) 2020-09-30 2021-09-03 ELECTRICAL DEVICE SYSTEM AND BATTERY PACK
US18/015,328 US20230275295A1 (en) 2020-09-30 2021-09-03 Electric device system and battery pack
CN202180048863.4A CN115836434A (zh) 2020-09-30 2021-09-03 电气设备系统及电池组
JP2022553712A JP7548322B2 (ja) 2020-09-30 2021-09-03 電気機器システム及び中／高電圧電池パック

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JP2020165408 2020-09-30
JP2020-165408 2020-09-30
JP2021-051359 2021-03-25
JP2021051359 2021-03-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03295158A (ja) * 1990-04-13 1991-12-26 Hitachi Ltd 電池パック
JP2017518193A (ja) * 2014-05-18 2017-07-06 ブラック アンド デッカー インクＢｌａｃｋ ＆ Ｄｅｃｋｅｒ Ｉｎｃ． 電動工具システム
WO2018079723A1 (ja) 2016-10-31 2018-05-03 日立工機株式会社 電池パック及び電池パックを用いた電気機器、電気機器システム
WO2018079722A1 (ja) * 2016-10-31 2018-05-03 日立工機株式会社 電池パック及び電池パックを用いた電気機器、電気機器システム
CN110783651A (zh) * 2019-12-09 2020-02-11 常州格力博有限公司 电能储存装置、电动工具系统及充电装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03295158A (ja) * 1990-04-13 1991-12-26 Hitachi Ltd 電池パック
JP2017518193A (ja) * 2014-05-18 2017-07-06 ブラック アンド デッカー インクＢｌａｃｋ ＆ Ｄｅｃｋｅｒ Ｉｎｃ． 電動工具システム
WO2018079723A1 (ja) 2016-10-31 2018-05-03 日立工機株式会社 電池パック及び電池パックを用いた電気機器、電気機器システム
WO2018079722A1 (ja) * 2016-10-31 2018-05-03 日立工機株式会社 電池パック及び電池パックを用いた電気機器、電気機器システム
CN110783651A (zh) * 2019-12-09 2020-02-11 常州格力博有限公司 电能储存装置、电动工具系统及充电装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4224606A4

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CN115836434A (zh) 2023-03-21
EP4224606A4 (en) 2025-01-29

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