WO2023188990A1 - Work vehicle battery and work vehicle - Google Patents

Work vehicle battery and work vehicle Download PDF

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Publication number
WO2023188990A1
WO2023188990A1 PCT/JP2023/005946 JP2023005946W WO2023188990A1 WO 2023188990 A1 WO2023188990 A1 WO 2023188990A1 JP 2023005946 W JP2023005946 W JP 2023005946W WO 2023188990 A1 WO2023188990 A1 WO 2023188990A1
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WO
WIPO (PCT)
Prior art keywords
battery
side wall
work vehicle
side walls
pair
Prior art date
Application number
PCT/JP2023/005946
Other languages
French (fr)
Japanese (ja)
Inventor
一顕 小澤
一浩 栗原
Original Assignee
株式会社小松製作所
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 株式会社小松製作所 filed Critical 株式会社小松製作所
Publication of WO2023188990A1 publication Critical patent/WO2023188990A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • H01M50/244—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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • 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
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • 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 disclosure relates to a battery for a work vehicle and a work vehicle.
  • a technique is known in which a work vehicle is equipped with a battery case that is formed into a box shape so that a plurality of batteries can be stored therein and has a hose opening in the side wall (see, for example, Patent Document 1).
  • Technology related to a battery package in which a protrusion provided on the outer surface of a battery package, a recess provided on the outer surface of the battery package, and a protrusion are electrically connected by fitting into the recess of another battery package. is known (for example, see Patent Document 2).
  • Batteries for work vehicles include lithium-ion batteries, which have a structure of a cell, which is the minimum unit of the battery, and a module, which is a collection of cells.
  • a battery pack may be configured by electrically connecting multiple modules.
  • large cases capable of housing multiple modules are individually designed depending on the application installed on the work vehicle. Therefore, it takes time and cost to design the strength of the case and check the quality for each model of work vehicle. As a result, when electrifying work vehicles, it is difficult to expand the range of models.
  • aspects of the present invention aim to increase versatility and make it easily applicable to applications mounted on work vehicles.
  • a battery for a work vehicle that is a power source for a work vehicle, including a module including a plurality of battery cells, a module case housing the plurality of battery cells, and a module housing the plurality of modules.
  • a battery case the battery case comprising a pair of side walls facing each other and a pair of side walls other than the pair of side walls, the battery case being disposed on one side wall of the other pair of side walls.
  • a battery for a work vehicle is provided, which includes a convex portion capable of accommodating at least one of the modules.
  • the work vehicle battery includes the above-mentioned work vehicle battery and a body frame on which the work vehicle battery is disposed, and the work vehicle battery is arranged on a work vehicle disposed behind the body frame. provided.
  • versatility can be increased and it can be easily applied to applications mounted on work vehicles.
  • FIG. 1 is a side wall view of the forklift according to the first embodiment viewed from the left.
  • FIG. 2 is a plan view showing a work vehicle battery arranged in a forklift.
  • FIG. 3 is an exploded perspective view of the work vehicle battery seen from the right rear.
  • FIG. 4 is a perspective view of an example of the arrangement of batteries for a work vehicle, viewed from the left front.
  • FIG. 5 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left.
  • FIG. 6 is a side wall view of the shovel held in the second embodiment, viewed from the left.
  • FIG. 7 is a plan view showing a work vehicle battery arranged in an excavator.
  • FIG. 8 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left.
  • FIG. 9 is a perspective view of another example of the arrangement of the work vehicle battery, viewed from the right rear.
  • FIG. 10 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the left front.
  • FIG. 1 is a side wall view of the forklift according to the first embodiment viewed from the left.
  • FIG. 2 is a plan view showing a work vehicle battery arranged in a forklift. In the embodiment, it is assumed that the work vehicle 1 is a forklift 1.
  • the forklift 1 is a battery forklift driven by electric power from a work vehicle battery (hereinafter referred to as "battery") 50.
  • the side where the forks (not shown) are arranged is the front side
  • the side where the counterweight (not shown) is arranged is the rear side.
  • left and right refer to left and right with respect to the front.
  • the left-right direction is the width direction of the vehicle body 10 as the main body of the forklift 1.
  • the upper side is perpendicular to a plane (ground plane) that contacts at least three of the front wheels 21 and rear wheels 22, and is a side that goes from the ground plane toward the rotation center axis of the front wheel 21 or the rear wheel 22.
  • the lower side is the side facing the ground plane from the rotation center axis of the front wheel 21 or the rear wheel 22.
  • the axis that runs in the front-rear direction of the vehicle body 10 and passes through the center of the vehicle body 10 in the width direction is called the front-rear axis
  • the axis that is perpendicular to the front-rear axis, parallel to the installation plane, and runs in the width direction of the vehicle body 10 is called the left-right axis.
  • An axis that extends in the vertical direction of the vehicle body 10 is referred to as a vertical axis.
  • the vertical axis is orthogonal to both the front-back axis and the left-right axis.
  • the front-back axis is the X-axis
  • the up-down axis is the Y-axis
  • the left-right axis is the Z-axis.
  • the vehicle body 10 has a frame 11. Front wheels 21 are arranged at the front left and right ends of the vehicle body 10, and rear wheels 22 are arranged at the rear left and right ends of the vehicle body 10, respectively.
  • a counterweight (not shown) is arranged at the rear end of the vehicle body 10.
  • the counterweight is a weight that balances the load when the fork supports it.
  • the width of the rear end of the forklift 1 is narrow at the center in the left-right direction.
  • the battery 50 is a power source for the forklift 1.
  • Battery 50 is a rechargeable battery.
  • the battery 50 is, for example, a nickel metal hydride battery, a lithium ion battery, or the like.
  • the battery 50 is placed at the rear of the forklift 1.
  • a battery 50 is arranged below and at the rear of the vehicle body 10.
  • FIG. 3 is an exploded perspective view of the work vehicle battery seen from the right rear. Each direction shown in FIG. 3 is an example of the arrangement of the battery 50 mounted on the forklift 1.
  • the battery 50 includes a module 53 that includes a plurality of battery cells 51 and a module case 52 that accommodates the plurality of battery cells 51, and a battery case 60 that accommodates the plurality of modules 53.
  • a portion of the module case 52 and a portion of the battery case 60 of some of the modules 53 are not illustrated.
  • the battery case 60 is formed into a box shape.
  • the battery case 60 includes a side wall 61 facing left, a side wall 62 facing right, a side wall 63 facing rear, a side wall 64 facing forward, a bottom 65 facing downward, and a lid portion facing upward. 66 (see FIG. 4).
  • the side wall 61, the side wall 62, the side wall 63, the side wall 64, the bottom portion 65, and the lid portion 66 are formed of plate material.
  • the side wall 61, the side wall 62, the side wall 63, the side wall 64, and the bottom portion 65 are integrally formed.
  • a plurality of modules 53 are housed in a space surrounded by side walls 61, 62, 63, 64, and a bottom 65.
  • a lid portion 66 is fixed above the side wall 61 , the side wall 62 , the side wall 63 , and the side wall 64 .
  • a space surrounded by the side walls 61, 62, 63, 64, and bottom 65 is covered and closed off by a lid 66.
  • the battery case 60 configured in this manner has dustproof and waterproof performance.
  • the side wall 61 is connected to the left end of the side wall 63 , the left end of the side wall 64 , and the left end of the bottom 65 .
  • the side wall 62 is connected to the right end of the side wall 63 , the right end of the side wall 64 , and the right end of the bottom 65 .
  • the side wall 63 is connected to the rear end of the side wall 61 , the rear end of the side wall 62 , and the rear end of the bottom 65 .
  • the side wall 64 is connected to the front end of the side wall 61 , the front end of the side wall 62 , and the front end of the bottom 65 .
  • the bottom portion 65 is connected to a lower end of the side wall 61 , a lower end of the side wall 62 , a lower end of the side wall 63 , and a lower end of the side wall 64 .
  • the lid portion 66 is removably disposed at the upper end of the side wall 61 , the upper end of the side wall 62 , the upper end of the side wall 63 , and the upper end of the side wall 64 .
  • the lid portion 66 includes holes 73 provided at the upper end of the side wall 61 , the upper end of the side wall 62 , the upper end of the side wall 63 , and the upper end of the side wall 64 .
  • a bolt (not shown) is inserted and fixed in a state in which the holes (not shown) overlap each other.
  • a sealing material (not shown) is arranged at the upper end of the side wall 61, the upper end of the side wall 62, the upper end of the side wall 63, the upper end of the side wall 64, and the peripheral edge of the lid part 66.
  • the side walls 61 and 62 face each other as a pair.
  • the side wall 61 and the side wall 62 are a pair of side walls.
  • the side walls 63 and 64 face each other as a pair.
  • Side wall 63 and side wall 64 are another pair of side walls.
  • the side wall 61 and the side wall 62 and the side wall 63 and the side wall 64 are adjacent to each other.
  • the bottom portion 65 and the lid portion 66 face each other as a pair.
  • the side wall 61 and the side wall 62 have a shorter length in the longitudinal direction than the side wall 63 and the side wall 64.
  • the length of the battery case 60 in the front-rear direction is shorter than the length in the left-right direction.
  • the side wall 64 is formed into a planar shape.
  • the lid portion 66 is formed into a planar shape.
  • a through hole 67 is arranged in the side wall 61 and the side wall 62 to draw out electrical wiring.
  • No through holes 67 are arranged in the side walls 63 and 64, the bottom part 65, and the lid part 66.
  • the through hole 67 passes through the side wall 61 and the side wall 62.
  • the through hole 67 arranged in the side wall 61 and the through hole 67 arranged in the side wall 62 are configured similarly.
  • the through hole 67 arranged in the side wall 62 will be explained as an example, and the description of the configuration of the through hole 67 arranged in the side wall 61 will be omitted.
  • the through hole 67 is arranged at the rear upper part of the side wall 62.
  • the through hole 67 penetrates the side wall 62. In the embodiment, two through holes 67 are arranged.
  • a cable or the like that electrically connects the batteries 50 is passed through the through hole 67 .
  • the through hole 67 has dustproof and waterproof performance.
  • a rib portion 68 having a function of reinforcing the battery case 60 and a function of connecting the battery cases 60 to each other is arranged on the side wall 61 and the side wall 62.
  • the rib portion 68 disposed on the side wall 61 and the rib portion 68 disposed on the side wall 62 are configured similarly.
  • the rib portion 68 disposed on the side wall 62 will be described as an example, and a description of the configuration of the rib portion 68 disposed on the side wall 61 will be omitted.
  • the rib portion 68 is arranged forward of the through hole 67 in the side wall 62.
  • the rib portion 68 reinforces the battery case 60.
  • the rib portion 68 is used when connecting the battery cases 60 together.
  • the rib portion 68 is formed integrally with the side wall 62.
  • the rib portion 68 includes a rib main body portion 681, a rib main body portion 682, a leg portion 683, and a leg portion 684.
  • the rib main body portion 681, the rib main body portion 682, the leg portions 683, and the leg portions 684 are integrally formed.
  • the rib main body portion 681 and the rib main body portion 682 extend in the vertical direction.
  • the rib main body portion 681 and the rib main body portion 682 are arranged apart from each other in the front-rear direction.
  • the rib main body portion 681 is arranged in front of the side wall 62.
  • the rib main body portion 682 is arranged at an intermediate portion of the side wall 62 in the front-rear direction.
  • the leg portion 683 protrudes outward in the left-right direction from the lower end of the side wall 62.
  • the lower end of the rib main body 681 and the lower end of the rib main body 682 are connected to the leg 683 .
  • the leg portions 684 protrude outward from the upper end of the side wall 62 in the left-right direction.
  • the upper end of the rib main body 681 and the upper end of the rib main body 682 are connected to the leg 684 .
  • Legs 683 and 684 face each other.
  • a through hole 685 is arranged in the leg portion 683. In the embodiment, two through holes 685 spaced apart in the front-rear direction are arranged in the leg portion 683. The through hole 685 passes through the leg portion 683.
  • a through hole 686 is arranged in the leg portion 684 . In the embodiment, two through holes 686 spaced apart in the front-rear direction are arranged in the leg portion 684. A through hole 686 passes through the leg portion 6
  • the leg portions 683 and the through holes 685 are used when another battery case 60 is stacked on the lower stage of the battery case 60 shown in FIG. 3. More specifically, the through holes 685 are overlapped with the through holes 686 of the legs 684 of other battery cases 60, and bolts (not shown) are inserted therethrough to connect the battery cases 60 to each other.
  • the lower surface of the leg portion 683 and the upper surface of the leg portion 684 of the other battery case 60 are in surface contact.
  • the leg portions 684 and the through holes 686 are used when another battery case 60 is placed on top of the battery case 60 shown in FIG. 3. More specifically, the through hole 686 is overlapped with the through hole 685 of the leg portion 683 of another battery case 60, and a bolt (not shown) is inserted through the through hole 686 to connect the battery cases 60 to each other.
  • the upper surface of the leg portion 684 and the lower surface of the leg portion 683 of the other battery case 60 are in surface contact.
  • a convex portion 69 that can accommodate at least one module 53 is arranged on the side wall 63.
  • the convex portion 69 is arranged at the center of the side wall 63 in the left-right direction.
  • the convex portion 69 projects outward from the side wall 63 in the front-rear direction.
  • the protrusion 69 is formed integrally with the side wall 63.
  • a rib portion 71 is arranged on the left side of the convex portion 69.
  • the rib portion 71 reinforces the battery case 60.
  • the rib portion 71 is formed integrally with the side wall 63 and the convex portion 69.
  • the rib portion 71 includes a rib main body portion 711, a leg portion 712, and a leg portion 713.
  • the rib main body portion 711, the leg portions 712, and the leg portions 713 are integrally formed.
  • the rib main body portion 711 extends in the vertical direction.
  • the rib main body portion 711, the leg portions 712, and the leg portions 713 protrude outward from the side wall 63 in the front-rear direction.
  • the leg portion 712 protrudes outward from the lower end of the side wall 63 in the front-rear direction.
  • the leg portion 712 is connected to the lower end of the rib main body portion 711 .
  • the leg portions 713 protrude outward from the upper end of the side wall 63 in the front-rear direction.
  • the leg portion 713 is connected to the upper end of the rib main body portion 711 .
  • Legs 712 and legs 712 are facing each other.
  • a through hole 714 is arranged in the leg portion 712 .
  • the through hole 714 passes through the leg portion 712.
  • a through hole 715 is arranged in the leg portion 713 .
  • the through hole 715 passes through the leg portion 713.
  • a rib portion 72 is arranged on the right side of the convex portion 69.
  • the rib portion 72 reinforces the battery case 60.
  • the rib portion 72 is formed integrally with the side wall 63 and the convex portion 69.
  • the rib portion 72 includes a rib main body portion 721, a leg portion 722, and a leg portion 723.
  • the rib main body portion 721, the leg portions 722, and the leg portions 723 are integrally formed.
  • the rib main body portion 721 extends in the vertical direction.
  • the rib main body portion 721, the leg portions 722, and the leg portions 723 protrude outward from the side wall 63 in the front-rear direction.
  • the leg portions 722 protrude outward from the lower end of the side wall 63 in the front-rear direction.
  • the leg portion 722 is connected to the lower end of the rib main body portion 721 .
  • the leg portions 723 protrude outward from the upper end of the side wall 63 in the front-rear direction.
  • the leg portion 723 is connected to the upper end of the rib main body portion 721 .
  • Legs 722 and legs 722 are facing each other.
  • a through hole 724 is arranged in the leg portion 722 .
  • the through hole 724 passes through the leg portion 722.
  • a through hole 725 is arranged in the leg portion 723 .
  • the through hole 725 passes through the leg portion 723.
  • One or more batteries 50 configured in this manner may be mounted on the work vehicle 1 depending on the application to be mounted on the forklift 1. An example of the arrangement of the battery 50 mounted on the forklift 1 will be described below.
  • FIG. 4 is a perspective view of an example of the arrangement of batteries for a work vehicle, viewed from the left front.
  • the wiring illustrated in FIG. 4 is an example, and the wiring is not limited thereto.
  • two batteries 50 are combined one after the other.
  • the two batteries 50 are referred to as a battery unit 50U.
  • the battery unit 50U includes two batteries 50.
  • the two batteries 50 are arranged with side walls 64 of the battery case 60 facing each other. Since the side walls 64 are planar, the side walls 64 of the battery case 60 are in plane contact with each other.
  • the two batteries 50 are electrically connected in series by wiring 101 and wiring 102.
  • the battery unit 50U is placed on a pedestal 81 and placed on the frame 11 of the forklift 1 (see FIG. 2).
  • the pedestal 81 is formed into a plate shape.
  • the battery unit 50U is fixed on the pedestal 81 by a bolt 83 inserted through a through hole 685 (see FIG. 3) of the rib portion 68 of the battery case 60 and a not-shown through hole provided in the pedestal 81.
  • the battery unit 50U is fixed on the pedestal 81 by a bolt 84 inserted through a through hole 714 (see FIG. 3) in the rib portion 71 of the battery case 60 and a not-shown through hole provided in the pedestal 81.
  • the battery unit 50U is fixed on the pedestal 81 by a bolt 85 inserted through a through hole 724 (see FIG. 3) in the rib portion 72 of the battery case 60 and a not-shown through hole provided in the pedestal 81. In this way, the battery unit 50U is fixed on the pedestal 81.
  • the convex portion 69 of the battery case 60 disposed at the front is located at the front, and the convex portion 69 of the battery case 60 disposed at the rear is located at the rear.
  • a convex portion 69 of the battery case 60 disposed at the rear is located at a portion where the width in the left and right direction is narrow at the rear end of the forklift 1.
  • a support plate 82 is placed above the battery unit 50U.
  • the support plate 82 is formed into a plate shape.
  • a storage case 100 that stores safety circuits and the like is placed on the support plate 82.
  • the storage case 100 is formed into a box shape.
  • the storage case 100 accommodates, for example, a fuse, a contactor, etc. (not shown).
  • Storage case 100 and battery unit 50U are electrically connected by wiring 103.
  • Two charging ports 110 are connected to the storage case 100. Power is supplied to the charging circuit inside the storage case 100 through the charging port 110, and the battery 50 of the battery unit 50U is charged. Charging port 110 is arranged at the rear end of forklift 1.
  • FIG. 5 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left.
  • four batteries 50 are combined.
  • Two batteries 50 with side walls 64 of battery cases 60 facing each other are stacked in two layers, one above the other.
  • the four batteries 50 are electrically connected in series.
  • illustration of a part of the wiring is omitted.
  • the four batteries 50 are referred to as a battery unit 50U.
  • the battery unit 50U includes four batteries 50.
  • the method of fixing the battery unit 50U, the pedestal 81, and the frame 11 of the forklift 1 is the same as in the arrangement example 1.
  • the upper battery case 60 and the lower battery case 20 are stacked in the same direction.
  • the through holes 685 (see FIG. 3) of the legs 683 of the upper battery case 60 and the through holes 686 (see FIG. 3) of the legs 684 of the lower battery case 60 are overlapped and fixed with bolts 87.
  • the through holes 714 (see FIG. 3) of the legs 712 of the upper battery case 60 and the through holes 715 (see FIG. 3) of the legs 713 of the lower battery case 60 are overlapped and fixed with bolts 85.
  • the through holes 724 (see FIG. 3) of the legs 722 of the upper battery case 60 and the through holes 725 (see FIG. 3) of the legs 723 of the lower battery case 60 are overlapped and fixed with bolts 84.
  • the storage case 100 is arranged above the battery case 60 at the rear of the upper stage of the battery unit 50U.
  • the through holes 67 for leading out the electrical wiring are arranged in the side walls 61 and 62, and no through holes are arranged in the side walls 63 and 64, the bottom part 65, and the lid part 66.
  • the battery case 60 can have dustproof and waterproof performance.
  • the battery case 60 includes a rib portion 68 on the side wall 61 and a side wall 62, and a convex portion 69 and a rib portion 71 and a rib portion 72 on the side wall 63. Embodiments can improve the strength of the battery case 60.
  • a module 53 including a module case 52 housing a plurality of battery cells 51 is housed in a plurality of battery cases 60 to form one unit of the battery 50.
  • the side walls 64 are formed in a planar shape, the side walls 64 of the two battery cases 60 can be combined by facing each other and making surface contact. According to the embodiment, even if the forklift 1 is loaded with different applications, one battery 50 or a plurality of batteries 50 can be used in combination as one unit. In this way, embodiments may be more versatile and easily adaptable to on-board applications on work vehicles.
  • the side wall 61 and the side wall 62 have a shorter length in the longitudinal direction than the side wall 63 and the side wall 64.
  • a protrusion 69 is arranged on the side wall 63.
  • the convex portion 69 of the battery case 60 can be arranged so as to be located in a portion where the width is narrow at the rear end portion of the forklift 1.
  • the battery 50 can be efficiently mounted in the limited space at the rear end of the forklift 1.
  • FIG. 6 is a side wall view of the shovel held in the second embodiment, viewed from the left.
  • FIG. 7 is a plan view showing a work vehicle battery arranged in an excavator. In the embodiment, it is assumed that the work vehicle 1 is an excavator 1.
  • the shovel 1 is a battery shovel driven by power from a battery 50.
  • the shovel 1 has a front side on which a working machine (not shown) is arranged, and a rear side on which an exterior is arranged.
  • left and right refer to left and right with respect to the front.
  • the left-right direction is the width direction of the vehicle body 10 as the main body of the excavator 1.
  • the lower side is perpendicular to the plane (ground plane) in contact with the crawler belt 25 and is the side facing the ground from the ground plane.
  • the upward direction is the opposite direction to the downward direction.
  • the vehicle body 10 has a frame 11.
  • the battery 50 is placed at the rear of the shovel 1.
  • a battery 50 is arranged below and at the rear of the vehicle body 10.
  • the rear end of the shovel has an arc shape that corresponds to the turning radius.
  • FIG. 8 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left.
  • FIG. 9 is a perspective view of another example of the arrangement of the work vehicle battery, viewed from the right rear.
  • two batteries 50 are combined vertically.
  • the upper battery case 60 and the lower battery case 20 are stacked in the same direction.
  • the two batteries 50 are electrically connected in series.
  • illustration of some wiring is omitted.
  • the two batteries 50 are referred to as a battery unit 50U.
  • the battery unit 50U includes two batteries 50.
  • a convex portion 69 of the battery case 60 is located in an arc-shaped portion at the rear end of the shovel.
  • a support portion 89 that supports the storage case 100 is arranged on the side wall 64 of the upper battery case 60.
  • the support portion 89 is formed into an L-shape when viewed from the side.
  • the support portion 89 includes a side wall 891 extending along the side wall 64 and a bottom portion 892 extending forward from the lower end of the side wall 891.
  • Storage case 100 is placed on bottom 892.
  • the batteries 50 stacked in two tiers have a through hole 685 (see FIG. 3) in the leg 683 of the upper battery case 60 and a through hole 686 (see FIG. 3) in the leg 684 of the lower battery case 60. are overlapped and fixed with bolts 87.
  • the through holes 714 (see FIG. 3) of the legs 712 of the upper battery case 60 and the through holes 715 (see FIG. 3) of the legs 713 of the lower battery case 60 are overlapped and fixed with bolts 85.
  • the through holes 724 (see FIG. 3) of the legs 722 of the upper battery case 60 and the through holes 725 (see FIG. 3) of the legs 723 of the lower battery case 60 are overlapped and fixed with bolts 84.
  • the battery unit 50U is placed on the pedestal 81F and the pedestal 81R, and is placed on the frame 11 of the excavator.
  • the pedestal 81F and the pedestal 81R are formed into plate shapes.
  • the battery unit 50U is fixed on the pedestal 81F by a bolt 83 inserted through a through hole 685 (see FIG. 3) of the rib portion 68 of the lower battery case 60 and a not-shown through hole provided in the pedestal 81F.
  • the battery unit 50U is fixed on the pedestal 81R by a bolt 85 inserted through a through hole 714 (see FIG. 3) of the rib portion 71 of the lower battery case 60 and a not-shown through hole provided in the pedestal 81R.
  • the battery unit 50U is fixed on the pedestal 81R by a bolt 84 inserted through a through hole 724 (see FIG. 3) of the rib portion 72 of the lower battery case 60 and a not-shown through hole provided in the pedestal 81R. In this way, battery unit 50U is fixed on pedestal 81F and pedestal 81R.
  • FIG. 10 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the left front. In the example shown in FIG. 10, one battery 50 is arranged. In FIG. 10, illustration of a part of the wiring is omitted.
  • the method of fixing the battery unit 50U, the pedestal 81F, the pedestal 81R, and the frame 11 of the shovel 1 is the same as in the arrangement example 1.
  • one battery 50 or a combination of a plurality of batteries 50 can be used as one unit depending on the application installed on the shovel 1.

Abstract

Provided is a work vehicle battery 50 which is a power source for a work vehicle and which comprises: modules 53 that each comprise a plurality of battery cells 51 and a module case 52 in which the plurality of battery cells 51 are stored; and a battery case 60 in which the plurality of modules 53 are stored. The battery case 60 comprises a pair of opposing side walls 61, 62, another pair of side walls 63, 64, and a protruding part 69 that is disposed on the side wall 63 and is capable of storing at least one of the modules 53.

Description

作業車両用バッテリ及び作業車両Batteries for work vehicles and work vehicles
　本開示は、作業車両用バッテリ及び作業車両に関する。 The present disclosure relates to a battery for a work vehicle and a work vehicle.
　作業用車両に複数のバッテリを内部に収納可能なように箱状に形成され、側壁にホース用開口を有するバッテリケースを搭載する技術が知られている（例えば、特許文献１参照）。電池パッケージの外側表面に設けられた凸部と、電池パッケージの外側表面に設けられた凹部と、凸部が他の電池パッケージの凹部に嵌め合わせることにより、電気的に接続される電池パッケージに関する技術が知られている（例えば、特許文献２参照）。 A technique is known in which a work vehicle is equipped with a battery case that is formed into a box shape so that a plurality of batteries can be stored therein and has a hose opening in the side wall (see, for example, Patent Document 1). Technology related to a battery package in which a protrusion provided on the outer surface of a battery package, a recess provided on the outer surface of the battery package, and a protrusion are electrically connected by fitting into the recess of another battery package. is known (for example, see Patent Document 2).
特開２０１２－２０２０６６号公報Japanese Patent Application Publication No. 2012-202066 特開２０１０－２３２１０２号公報Japanese Patent Application Publication No. 2010-232102
　作業車両用のバッテリには、リチウムイオン電池には電池の最小単位のセルという構成とセルの集合体のモジュールがある。作業車両の搭載アプリケーションに応じて、複数のモジュールを電気的に接続して電池パックを構成することがある。しかしながら、通常は、作業車両の搭載アプリケーションに応じて、複数のモジュールを収納可能な大型のケースを個別設計する。このため、作業車両の機種ごとに、ケースの強度設計及び品質確認の手間及びコストを要する。これにより、作業車両を電動化する際に、機種系列を拡大することが容易ではない。 Batteries for work vehicles include lithium-ion batteries, which have a structure of a cell, which is the minimum unit of the battery, and a module, which is a collection of cells. Depending on the application installed on the work vehicle, a battery pack may be configured by electrically connecting multiple modules. However, usually, large cases capable of housing multiple modules are individually designed depending on the application installed on the work vehicle. Therefore, it takes time and cost to design the strength of the case and check the quality for each model of work vehicle. As a result, when electrifying work vehicles, it is difficult to expand the range of models.
　本発明の態様は、汎用性を高め、作業車両の搭載アプリケーションに容易に適用可能にすることを目的とする。 Aspects of the present invention aim to increase versatility and make it easily applicable to applications mounted on work vehicles.
　本開示に従えば、作業車両の動力源である作業車両用バッテリであって、複数のバッテリセルと、前記複数のバッテリセルを収納したモジュールケースとを備えたモジュールと、複数の前記モジュールを収納したバッテリケースと、を備え、前記バッテリケースは、向かい合う一対の側壁と、前記一対の側壁以外の他の一対の側壁とを備え、前記他の一対の側壁のうちの一方の側壁に配置された、少なくとも１つの前記モジュールを収納可能な凸部を備える、作業車両用バッテリが提供される。 According to the present disclosure, there is provided a battery for a work vehicle that is a power source for a work vehicle, including a module including a plurality of battery cells, a module case housing the plurality of battery cells, and a module housing the plurality of modules. a battery case, the battery case comprising a pair of side walls facing each other and a pair of side walls other than the pair of side walls, the battery case being disposed on one side wall of the other pair of side walls. A battery for a work vehicle is provided, which includes a convex portion capable of accommodating at least one of the modules.
　本開示に従えば、上記の作業車両用バッテリと、前記作業車両用バッテリが配置された車体フレームと、を備え、前記作業車両用バッテリは、前記車体フレームの後方に配置されている作業車両が提供される。 According to the present disclosure, the work vehicle battery includes the above-mentioned work vehicle battery and a body frame on which the work vehicle battery is disposed, and the work vehicle battery is arranged on a work vehicle disposed behind the body frame. provided.
　本開示によれば、汎用性を高め、作業車両の搭載アプリケーションに容易に適用可能にすることができる。 According to the present disclosure, versatility can be increased and it can be easily applied to applications mounted on work vehicles.
図１は、第１実施形態に係るフォークリフトを左方から見た側壁図である。FIG. 1 is a side wall view of the forklift according to the first embodiment viewed from the left. 図２は、フォークリフトに配置された作業車両用バッテリを示す平面図である。FIG. 2 is a plan view showing a work vehicle battery arranged in a forklift. 図３は、作業車両用バッテリを右後方からみた分解斜視図である。FIG. 3 is an exploded perspective view of the work vehicle battery seen from the right rear. 図４は、作業車両用バッテリの配置の一例を左前方からみた斜視図である。FIG. 4 is a perspective view of an example of the arrangement of batteries for a work vehicle, viewed from the left front. 図５は、作業車両用バッテリの配置の他の例を左前方からみた斜視図である。FIG. 5 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left. 図６は、第２実施形態に抱えるショベルを左方から見た側壁図である。FIG. 6 is a side wall view of the shovel held in the second embodiment, viewed from the left. 図７は、ショベルに配置された作業車両用バッテリを示す平面図である。FIG. 7 is a plan view showing a work vehicle battery arranged in an excavator. 図８は、作業車両用バッテリの配置の他の例を左前方からみた斜視図である。FIG. 8 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left. 図９は、作業車両用バッテリの配置の他の例を右後方からみた斜視図である。FIG. 9 is a perspective view of another example of the arrangement of the work vehicle battery, viewed from the right rear. 図１０は、作業車両用バッテリの配置の他の例を左前方からみた斜視図である。FIG. 10 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the left front.
　以下、本発明に係る実施形態について図面を参照しながら説明するが、本発明はこれに限定されない。以下で説明する実施形態の構成要素は、適宜組み合わせることができる。また、一部の構成要素を用いない場合もある。 Hereinafter, embodiments according to the present invention will be described with reference to the drawings, but the present invention is not limited thereto. The components of the embodiments described below can be combined as appropriate. Furthermore, some components may not be used.
（第１実施形態）
［フォークリフト］
　図１は、第１実施形態に係るフォークリフトを左方から見た側壁図である。図２は、フォークリフトに配置された作業車両用バッテリを示す平面図である。実施形態においては、作業車両１がフォークリフト１であることとする。フォークリフト１は、作業車両用バッテリ（以下、「バッテリ」という。）５０からの電力で駆動されるバッテリフォークリフトである。 (First embodiment)
[forklift]
FIG. 1 is a side wall view of the forklift according to the first embodiment viewed from the left. FIG. 2 is a plan view showing a work vehicle battery arranged in a forklift. In the embodiment, it is assumed that the work vehicle 1 is a forklift 1. The forklift 1 is a battery forklift driven by electric power from a work vehicle battery (hereinafter referred to as "battery") 50.
　以下において、フォークリフト１は、図示しないフォークが配置された側が前方であり、図示しないカウンタウエイトが配置された側が後方である。実施形態においては、左右とは前方に対する左右をいうものとする。左右方向は、フォークリフト１の本体としての車体１０の幅方向である。上方は、前輪２１及び後輪２２のうち少なくとも３個と接触する平面（接地平面）に直交し、かつ接地平面から前輪２１又は後輪２２の回転中心軸に向かう側である。下方は、前輪２１又は後輪２２の回転中心軸から接地平面に向かう側である。車体１０の前後方向に向かい、かつ車体１０の幅方向中心を通る軸を前後軸といい、前後軸に直交し、設置平面と平行かつ車体１０の車幅方向に向かう軸を左右軸という。車体１０の上下方向に向かう軸を上下軸という。上下軸は、前後軸と左右軸との両方に直交する。前後軸はＸ軸であり、上下軸はＹ軸であり、左右軸はＺ軸である。 In the following, for the forklift 1, the side where the forks (not shown) are arranged is the front side, and the side where the counterweight (not shown) is arranged is the rear side. In the embodiment, left and right refer to left and right with respect to the front. The left-right direction is the width direction of the vehicle body 10 as the main body of the forklift 1. The upper side is perpendicular to a plane (ground plane) that contacts at least three of the front wheels 21 and rear wheels 22, and is a side that goes from the ground plane toward the rotation center axis of the front wheel 21 or the rear wheel 22. The lower side is the side facing the ground plane from the rotation center axis of the front wheel 21 or the rear wheel 22. The axis that runs in the front-rear direction of the vehicle body 10 and passes through the center of the vehicle body 10 in the width direction is called the front-rear axis, and the axis that is perpendicular to the front-rear axis, parallel to the installation plane, and runs in the width direction of the vehicle body 10 is called the left-right axis. An axis that extends in the vertical direction of the vehicle body 10 is referred to as a vertical axis. The vertical axis is orthogonal to both the front-back axis and the left-right axis. The front-back axis is the X-axis, the up-down axis is the Y-axis, and the left-right axis is the Z-axis.
　車体１０は、フレーム１１を有する。車体１０の前方の左右の端部にそれぞれ前輪２１が配置され、車体１０の後方の左右の端部にそれぞれ後輪２２が配置される。 The vehicle body 10 has a frame 11. Front wheels 21 are arranged at the front left and right ends of the vehicle body 10, and rear wheels 22 are arranged at the rear left and right ends of the vehicle body 10, respectively.
　車体１０の後端部には、図示しないカウンタウエイトが配置される。フォークリフト１は、カウンタバランス型のフォークリフトとして説明するが、これに限定されない。カウンタウエイトは、フォークが荷物を支持した場合に釣り合いをとるためのウエイトである。 A counterweight (not shown) is arranged at the rear end of the vehicle body 10. Although the forklift 1 will be described as a counterbalance type forklift, it is not limited thereto. The counterweight is a weight that balances the load when the fork supports it.
　フォークリフト１の後端部は、左右方向の中央部の幅が狭くなっている。 The width of the rear end of the forklift 1 is narrow at the center in the left-right direction.
［バッテリ］
　バッテリ５０は、フォークリフト１の動力源である。バッテリ５０は、充電式バッテリである。バッテリ５０は、例えば、ニッケル水素電池、リチウムイオン電池などである。 [Battery]
The battery 50 is a power source for the forklift 1. Battery 50 is a rechargeable battery. The battery 50 is, for example, a nickel metal hydride battery, a lithium ion battery, or the like.
　バッテリ５０は、フォークリフト１の後部に配置されている。車体１０の後方における下方には、バッテリ５０が配置される。 The battery 50 is placed at the rear of the forklift 1. A battery 50 is arranged below and at the rear of the vehicle body 10.
　図３は、作業車両用バッテリを右後方からみた分解斜視図である。図３に示す各方向は、フォークリフト１に搭載したバッテリ５０の配置の一例における方向である。バッテリ５０は、複数のバッテリセル５１と、複数のバッテリセル５１を収納したモジュールケース５２とを備えたモジュール５３と、複数のモジュール５３を収納したバッテリケース６０とを備える。図３においては、説明のために、一部のモジュール５３のモジュールケース５２の一部及びバッテリケース６０の一部を図示していない。 FIG. 3 is an exploded perspective view of the work vehicle battery seen from the right rear. Each direction shown in FIG. 3 is an example of the arrangement of the battery 50 mounted on the forklift 1. The battery 50 includes a module 53 that includes a plurality of battery cells 51 and a module case 52 that accommodates the plurality of battery cells 51, and a battery case 60 that accommodates the plurality of modules 53. In FIG. 3, for the sake of explanation, a portion of the module case 52 and a portion of the battery case 60 of some of the modules 53 are not illustrated.
　バッテリケース６０は、箱形状に形成されている。バッテリケース６０は、左方に面した側壁６１、右方に面した側壁６２、後方に面した側壁６３、前方に面した側壁６４、下方に面した底部６５、及び、上方に面した蓋部６６（図４参照）を備える。側壁６１、側壁６２、側壁６３、側壁６４、底部６５及び蓋部６６は、板材で形成されている。側壁６１、側壁６２、側壁６３、側壁６４及び底部６５は、一体として形成されている。側壁６１、側壁６２、側壁６３、側壁６４及び底部６５によって囲まれた空間に、複数のモジュール５３が収納されている。側壁６１、側壁６２、側壁６３及び側壁６４の上方に蓋部６６が固定される。側壁６１、側壁６２、側壁６３、側壁６４及び底部６５で囲まれた空間は、蓋部６６によって覆われて閉塞される。このように構成されたバッテリケース６０は、防塵防水性能を有する。 The battery case 60 is formed into a box shape. The battery case 60 includes a side wall 61 facing left, a side wall 62 facing right, a side wall 63 facing rear, a side wall 64 facing forward, a bottom 65 facing downward, and a lid portion facing upward. 66 (see FIG. 4). The side wall 61, the side wall 62, the side wall 63, the side wall 64, the bottom portion 65, and the lid portion 66 are formed of plate material. The side wall 61, the side wall 62, the side wall 63, the side wall 64, and the bottom portion 65 are integrally formed. A plurality of modules 53 are housed in a space surrounded by side walls 61, 62, 63, 64, and a bottom 65. A lid portion 66 is fixed above the side wall 61 , the side wall 62 , the side wall 63 , and the side wall 64 . A space surrounded by the side walls 61, 62, 63, 64, and bottom 65 is covered and closed off by a lid 66. The battery case 60 configured in this manner has dustproof and waterproof performance.
　側壁６１は、側壁６３の左方の端部、側壁６４の左方の端部及び底部６５の左方の端部に接続されている。側壁６２は、側壁６３の右方の端部、側壁６４の右方の端部及び底部６５の右方の端部に接続されている。側壁６３は、側壁６１の後方の端部、側壁６２の後方の端部及び底部６５の後方の端部に接続されている。側壁６４は、側壁６１の前方の端部、側壁６２の前方の端部及び底部６５の前方の端部に接続されている。底部６５は、側壁６１の下方の端部、側壁６２の下方の端部、側壁６３の下方の端部及び側壁６４の下方の端部に接続されている。 The side wall 61 is connected to the left end of the side wall 63 , the left end of the side wall 64 , and the left end of the bottom 65 . The side wall 62 is connected to the right end of the side wall 63 , the right end of the side wall 64 , and the right end of the bottom 65 . The side wall 63 is connected to the rear end of the side wall 61 , the rear end of the side wall 62 , and the rear end of the bottom 65 . The side wall 64 is connected to the front end of the side wall 61 , the front end of the side wall 62 , and the front end of the bottom 65 . The bottom portion 65 is connected to a lower end of the side wall 61 , a lower end of the side wall 62 , a lower end of the side wall 63 , and a lower end of the side wall 64 .
　蓋部６６は、側壁６１の上方の端部、側壁６２の上方の端部、側壁６３の上方の端部及び側壁６４の上方の端部に着脱可能に配置されている。蓋部６６は、側壁６１の上方の端部、側壁６２の上方の端部、側壁６３の上方の端部及び側壁６４の上方の端部に設けられた孔７３と、蓋部６６に設けられた図示しない孔とを重ね合わせた状態で、図示しないボルトが挿通されて固定される。側壁６１の上方の端部、側壁６２の上方の端部、側壁６３の上方の端部、側壁６４の上方の端部及び蓋部６６の周縁部は、図示しないシール材が配置されている。 The lid portion 66 is removably disposed at the upper end of the side wall 61 , the upper end of the side wall 62 , the upper end of the side wall 63 , and the upper end of the side wall 64 . The lid portion 66 includes holes 73 provided at the upper end of the side wall 61 , the upper end of the side wall 62 , the upper end of the side wall 63 , and the upper end of the side wall 64 . A bolt (not shown) is inserted and fixed in a state in which the holes (not shown) overlap each other. A sealing material (not shown) is arranged at the upper end of the side wall 61, the upper end of the side wall 62, the upper end of the side wall 63, the upper end of the side wall 64, and the peripheral edge of the lid part 66.
　側壁６１及び側壁６２は、一対として向かい合う。側壁６１及び側壁６２は、一対の側壁である。側壁６３及び側壁６４は、一対として向かい合う。側壁６３及び側壁６４は、他の一対の側壁である。側壁６１及び側壁６２と、側壁６３及び側壁６４とは隣り合っている。底部６５及び蓋部６６は、一対として向かい合う。 The side walls 61 and 62 face each other as a pair. The side wall 61 and the side wall 62 are a pair of side walls. The side walls 63 and 64 face each other as a pair. Side wall 63 and side wall 64 are another pair of side walls. The side wall 61 and the side wall 62 and the side wall 63 and the side wall 64 are adjacent to each other. The bottom portion 65 and the lid portion 66 face each other as a pair.
　側壁６１及び側壁６２は、側壁６３及び側壁６４よりも長手方向の長さが短い。バッテリケース６０は、前後方向の長さが左右方向の長さより短い。 The side wall 61 and the side wall 62 have a shorter length in the longitudinal direction than the side wall 63 and the side wall 64. The length of the battery case 60 in the front-rear direction is shorter than the length in the left-right direction.
　側壁６４は、平面状に形成されている。蓋部６６は、平面状に形成されている。 The side wall 64 is formed into a planar shape. The lid portion 66 is formed into a planar shape.
　側壁６１及び側壁６２には、電気的な配線を引き出す貫通孔６７が配置されている。側壁６３及び側壁６４、底部６５及び蓋部６６には貫通孔６７が配置されていない。 A through hole 67 is arranged in the side wall 61 and the side wall 62 to draw out electrical wiring. No through holes 67 are arranged in the side walls 63 and 64, the bottom part 65, and the lid part 66.
　貫通孔６７は、側壁６１及び側壁６２を貫通している。側壁６１に配置された貫通孔６７と、側壁６２に配置された貫通孔６７とは、同様に構成されている。ここでは、図３を参照して、側壁６２に配置された貫通孔６７を例にして説明し、側壁６１に配置された貫通孔６７の構成についての説明は省略する。貫通孔６７は、側壁６２の後方上部に配置されている。貫通孔６７は、側壁６２を貫通している。実施形態では、貫通孔６７は、２つ配置されている。貫通孔６７は、バッテリ５０同士を電気的に接続するケーブル等が通される。貫通孔６７は、防塵防水性能を有する。 The through hole 67 passes through the side wall 61 and the side wall 62. The through hole 67 arranged in the side wall 61 and the through hole 67 arranged in the side wall 62 are configured similarly. Here, with reference to FIG. 3, the through hole 67 arranged in the side wall 62 will be explained as an example, and the description of the configuration of the through hole 67 arranged in the side wall 61 will be omitted. The through hole 67 is arranged at the rear upper part of the side wall 62. The through hole 67 penetrates the side wall 62. In the embodiment, two through holes 67 are arranged. A cable or the like that electrically connects the batteries 50 is passed through the through hole 67 . The through hole 67 has dustproof and waterproof performance.
　側壁６１及び側壁６２には、バッテリケース６０を補強する機能と、バッテリケース６０同士を連結する機能とを有するリブ部６８が配置されている。側壁６１に配置されたリブ部６８と、側壁６２に配置されたリブ部６８とは、同様に構成されている。ここでは、図３を参照して、側壁６２に配置されたリブ部６８を例にして説明し、側壁６１に配置されたリブ部６８の構成についての説明は省略する。 A rib portion 68 having a function of reinforcing the battery case 60 and a function of connecting the battery cases 60 to each other is arranged on the side wall 61 and the side wall 62. The rib portion 68 disposed on the side wall 61 and the rib portion 68 disposed on the side wall 62 are configured similarly. Here, with reference to FIG. 3, the rib portion 68 disposed on the side wall 62 will be described as an example, and a description of the configuration of the rib portion 68 disposed on the side wall 61 will be omitted.
　リブ部６８は、側壁６２において、貫通孔６７より前方に配置される。リブ部６８は、バッテリケース６０を補強する。リブ部６８は、バッテリケース６０同士を連結する際に用いられる。リブ部６８は、側壁６２と一体に形成されている。リブ部６８は、リブ本体部６８１、リブ本体部６８２、脚部６８３及び脚部６８４を備える。リブ本体部６８１、リブ本体部６８２、脚部６８３及び脚部６８４は、一体に形成されている。 The rib portion 68 is arranged forward of the through hole 67 in the side wall 62. The rib portion 68 reinforces the battery case 60. The rib portion 68 is used when connecting the battery cases 60 together. The rib portion 68 is formed integrally with the side wall 62. The rib portion 68 includes a rib main body portion 681, a rib main body portion 682, a leg portion 683, and a leg portion 684. The rib main body portion 681, the rib main body portion 682, the leg portions 683, and the leg portions 684 are integrally formed.
　リブ本体部６８１及びリブ本体部６８２は、上下方向に延在する。リブ本体部６８１及びリブ本体部６８２は、前後方向に離間して配置されている。リブ本体部６８１は、側壁６２の前方に配置されている。リブ本体部６８２は、側壁６２の前後方向の中間部に配置されている。 The rib main body portion 681 and the rib main body portion 682 extend in the vertical direction. The rib main body portion 681 and the rib main body portion 682 are arranged apart from each other in the front-rear direction. The rib main body portion 681 is arranged in front of the side wall 62. The rib main body portion 682 is arranged at an intermediate portion of the side wall 62 in the front-rear direction.
　脚部６８３は、側壁６２の下方の端部から左右方向の外側に突出している。脚部６８３は、リブ本体部６８１の下方の端部及びリブ本体部６８２の下方の端部が接続されている。脚部６８４は、側壁６２の上方の端部から左右方向の外側に突出している。脚部６８４は、リブ本体部６８１の上方の端部及びリブ本体部６８２の上方の端部が接続されている。脚部６８３及び脚部６８４は、向かい合っている。脚部６８３には、貫通孔６８５が配置されている。実施形態では、脚部６８３には、前後方向に離間した２つの貫通孔６８５が配置されている。貫通孔６８５は、脚部６８３を貫通している。脚部６８４には、貫通孔６８６が配置されている。実施形態では、脚部６８４には、前後方向に離間した２つの貫通孔６８６が配置されている。貫通孔６８６は、脚部６８４を貫通している。 The leg portion 683 protrudes outward in the left-right direction from the lower end of the side wall 62. The lower end of the rib main body 681 and the lower end of the rib main body 682 are connected to the leg 683 . The leg portions 684 protrude outward from the upper end of the side wall 62 in the left-right direction. The upper end of the rib main body 681 and the upper end of the rib main body 682 are connected to the leg 684 . Legs 683 and 684 face each other. A through hole 685 is arranged in the leg portion 683. In the embodiment, two through holes 685 spaced apart in the front-rear direction are arranged in the leg portion 683. The through hole 685 passes through the leg portion 683. A through hole 686 is arranged in the leg portion 684 . In the embodiment, two through holes 686 spaced apart in the front-rear direction are arranged in the leg portion 684. A through hole 686 passes through the leg portion 684.
　脚部６８３及び貫通孔６８５は、図３に示すバッテリケース６０の下段に他のバッテリケース６０を重ねて配置する場合に用いられる。より詳しくは、貫通孔６８５は、他のバッテリケース６０の脚部６８４の貫通孔６８６と重ね合わせた状態で、図示しないボルトが挿通されてバッテリケース６０同士が連結される。脚部６８３の下面と、他のバッテリケース６０の脚部６８４の上面とは、面で接触する。 The leg portions 683 and the through holes 685 are used when another battery case 60 is stacked on the lower stage of the battery case 60 shown in FIG. 3. More specifically, the through holes 685 are overlapped with the through holes 686 of the legs 684 of other battery cases 60, and bolts (not shown) are inserted therethrough to connect the battery cases 60 to each other. The lower surface of the leg portion 683 and the upper surface of the leg portion 684 of the other battery case 60 are in surface contact.
　脚部６８４及び貫通孔６８６は、図３に示すバッテリケース６０の上段に他のバッテリケース６０を重ねて配置する場合に用いられる。より詳しくは、貫通孔６８６は、他のバッテリケース６０の脚部６８３の貫通孔６８５と重ね合わせた状態で、図示しないボルトが挿通されてバッテリケース６０同士が連結される。脚部６８４の上面と、他のバッテリケース６０の脚部６８３の下面とは、面で接触する。 The leg portions 684 and the through holes 686 are used when another battery case 60 is placed on top of the battery case 60 shown in FIG. 3. More specifically, the through hole 686 is overlapped with the through hole 685 of the leg portion 683 of another battery case 60, and a bolt (not shown) is inserted through the through hole 686 to connect the battery cases 60 to each other. The upper surface of the leg portion 684 and the lower surface of the leg portion 683 of the other battery case 60 are in surface contact.
　側壁６３には、少なくとも１つのモジュール５３を収納可能な凸部６９が配置されている。凸部６９は、側壁６３の左右方向の中央部に配置されている。凸部６９は、側壁６３から前後方向の外側に突出している。凸部６９は、側壁６３と一体に形成されている。 A convex portion 69 that can accommodate at least one module 53 is arranged on the side wall 63. The convex portion 69 is arranged at the center of the side wall 63 in the left-right direction. The convex portion 69 projects outward from the side wall 63 in the front-rear direction. The protrusion 69 is formed integrally with the side wall 63.
　凸部６９の左方には、リブ部７１が配置されている。リブ部７１は、バッテリケース６０を補強する。リブ部７１は、側壁６３及び凸部６９と一体に形成されている。リブ部７１は、リブ本体部７１１、脚部７１２及び脚部７１３を備える。リブ本体部７１１、脚部７１２及び脚部７１３は、一体に形成されている。リブ本体部７１１は、上下方向に延在する。リブ本体部７１１、脚部７１２及び脚部７１３は、側壁６３から前後方向の外側に突出されている。 A rib portion 71 is arranged on the left side of the convex portion 69. The rib portion 71 reinforces the battery case 60. The rib portion 71 is formed integrally with the side wall 63 and the convex portion 69. The rib portion 71 includes a rib main body portion 711, a leg portion 712, and a leg portion 713. The rib main body portion 711, the leg portions 712, and the leg portions 713 are integrally formed. The rib main body portion 711 extends in the vertical direction. The rib main body portion 711, the leg portions 712, and the leg portions 713 protrude outward from the side wall 63 in the front-rear direction.
　脚部７１２は、側壁６３の下方の端部から前後方向の外側に突出している。脚部７１２は、リブ本体部７１１の下方の端部が接続されている。脚部７１３は、側壁６３の上方の端部から前後方向の外側に突出している。脚部７１３は、リブ本体部７１１の上方の端部が接続されている。脚部７１２及び脚部７１２は、向かい合っている。脚部７１２には、貫通孔７１４が配置されている。貫通孔７１４は、脚部７１２を貫通している。脚部７１３には、貫通孔７１５が配置されている。貫通孔７１５は、脚部７１３を貫通している。 The leg portion 712 protrudes outward from the lower end of the side wall 63 in the front-rear direction. The leg portion 712 is connected to the lower end of the rib main body portion 711 . The leg portions 713 protrude outward from the upper end of the side wall 63 in the front-rear direction. The leg portion 713 is connected to the upper end of the rib main body portion 711 . Legs 712 and legs 712 are facing each other. A through hole 714 is arranged in the leg portion 712 . The through hole 714 passes through the leg portion 712. A through hole 715 is arranged in the leg portion 713 . The through hole 715 passes through the leg portion 713.
　凸部６９の右方には、リブ部７２が配置されている。リブ部７２は、バッテリケース６０を補強する。リブ部７２は、側壁６３及び凸部６９と一体に形成されている。リブ部７２は、リブ本体部７２１、脚部７２２及び脚部７２３を備える。リブ本体部７２１、脚部７２２及び脚部７２３は、一体に形成されている。リブ本体部７２１は、上下方向に延在する。リブ本体部７２１、脚部７２２及び脚部７２３は、側壁６３から前後方向の外側に突出されている。 A rib portion 72 is arranged on the right side of the convex portion 69. The rib portion 72 reinforces the battery case 60. The rib portion 72 is formed integrally with the side wall 63 and the convex portion 69. The rib portion 72 includes a rib main body portion 721, a leg portion 722, and a leg portion 723. The rib main body portion 721, the leg portions 722, and the leg portions 723 are integrally formed. The rib main body portion 721 extends in the vertical direction. The rib main body portion 721, the leg portions 722, and the leg portions 723 protrude outward from the side wall 63 in the front-rear direction.
　脚部７２２は、側壁６３の下方の端部から前後方向の外側に突出している。脚部７２２は、リブ本体部７２１の下方の端部が接続されている。脚部７２３は、側壁６３の上方の端部から前後方向の外側に突出している。脚部７２３は、リブ本体部７２１の上方の端部が接続されている。脚部７２２及び脚部７２２は、向かい合っている。脚部７２２には、貫通孔７２４が配置されている。貫通孔７２４は、脚部７２２を貫通している。脚部７２３には、貫通孔７２５が配置されている。貫通孔７２５は、脚部７２３を貫通している。 The leg portions 722 protrude outward from the lower end of the side wall 63 in the front-rear direction. The leg portion 722 is connected to the lower end of the rib main body portion 721 . The leg portions 723 protrude outward from the upper end of the side wall 63 in the front-rear direction. The leg portion 723 is connected to the upper end of the rib main body portion 721 . Legs 722 and legs 722 are facing each other. A through hole 724 is arranged in the leg portion 722 . The through hole 724 passes through the leg portion 722. A through hole 725 is arranged in the leg portion 723 . The through hole 725 passes through the leg portion 723.
　このように構成されたバッテリ５０は、フォークリフト１の搭載アプリケーションに応じて、１つ又は複数を組み合わせて作業車両１に搭載される。以下に、フォークリフト１に搭載されるバッテリ５０の配置例について説明する。 One or more batteries 50 configured in this manner may be mounted on the work vehicle 1 depending on the application to be mounted on the forklift 1. An example of the arrangement of the battery 50 mounted on the forklift 1 will be described below.
［フォークリフト用のバッテリの配置例１］
　図４を用いて、バッテリ５０の配置の一例を説明する。図４は、作業車両用バッテリの配置の一例を左前方からみた斜視図である。図４において図示した配線は一例であり、これに限定されない。図４に示す例では、２つのバッテリ５０が前後に組み合わされている。２つのバッテリ５０を、バッテリユニット５０Ｕという。図４に示す例では、バッテリユニット５０Ｕは、２つのバッテリ５０を備える。２つのバッテリ５０は、バッテリケース６０の側壁６４同士を向かい合わせて配置されている。側壁６４が平面状であるので、バッテリケース６０の側壁６４同士は面で接触する。２つのバッテリ５０は、配線１０１及び配線１０２によって電気的に直列に接続される。 [Example 1 of battery arrangement for forklift]
An example of the arrangement of the battery 50 will be explained using FIG. 4. FIG. 4 is a perspective view of an example of the arrangement of batteries for a work vehicle, viewed from the left front. The wiring illustrated in FIG. 4 is an example, and the wiring is not limited thereto. In the example shown in FIG. 4, two batteries 50 are combined one after the other. The two batteries 50 are referred to as a battery unit 50U. In the example shown in FIG. 4, the battery unit 50U includes two batteries 50. The two batteries 50 are arranged with side walls 64 of the battery case 60 facing each other. Since the side walls 64 are planar, the side walls 64 of the battery case 60 are in plane contact with each other. The two batteries 50 are electrically connected in series by wiring 101 and wiring 102.
　バッテリユニット５０Ｕは、台座８１上に載置されて、フォークリフト１のフレーム１１（図２参照）上に載置される。台座８１は、板状に形成される。バッテリユニット５０Ｕは、バッテリケース６０のリブ部６８の貫通孔６８５（図３参照）と台座８１に設けられた図示しない貫通孔とに挿通されたボルト８３によって台座８１上に固定される。バッテリユニット５０Ｕは、バッテリケース６０のリブ部７１の貫通孔７１４（図３参照）と、台座８１に設けられた図示しない貫通孔とに挿通されたボルト８４によって台座８１上に固定される。バッテリユニット５０Ｕは、バッテリケース６０のリブ部７２の貫通孔７２４（図３参照）と、台座８１に設けられた図示しない貫通孔とに挿通されたボルト８５によって台座８１上に固定される。このようにして、バッテリユニット５０Ｕは、台座８１上に固定される。 The battery unit 50U is placed on a pedestal 81 and placed on the frame 11 of the forklift 1 (see FIG. 2). The pedestal 81 is formed into a plate shape. The battery unit 50U is fixed on the pedestal 81 by a bolt 83 inserted through a through hole 685 (see FIG. 3) of the rib portion 68 of the battery case 60 and a not-shown through hole provided in the pedestal 81. The battery unit 50U is fixed on the pedestal 81 by a bolt 84 inserted through a through hole 714 (see FIG. 3) in the rib portion 71 of the battery case 60 and a not-shown through hole provided in the pedestal 81. The battery unit 50U is fixed on the pedestal 81 by a bolt 85 inserted through a through hole 724 (see FIG. 3) in the rib portion 72 of the battery case 60 and a not-shown through hole provided in the pedestal 81. In this way, the battery unit 50U is fixed on the pedestal 81.
　バッテリユニット５０Ｕは、前方に配置されたバッテリケース６０の凸部６９が、前方に位置し、後方に配置されたバッテリケース６０の凸部６９が、後方に位置する。後方に配置されたバッテリケース６０の凸部６９が、フォークリフト１の後端部において左右方向の幅が狭くなった部分に位置する。 In the battery unit 50U, the convex portion 69 of the battery case 60 disposed at the front is located at the front, and the convex portion 69 of the battery case 60 disposed at the rear is located at the rear. A convex portion 69 of the battery case 60 disposed at the rear is located at a portion where the width in the left and right direction is narrow at the rear end of the forklift 1.
　バッテリユニット５０Ｕの上方には、支持板８２が載置される。支持板８２は、板状に形成されている。支持板８２には、安全回路等を収納する収納ケース１００が載置されている。 A support plate 82 is placed above the battery unit 50U. The support plate 82 is formed into a plate shape. A storage case 100 that stores safety circuits and the like is placed on the support plate 82.
　収納ケース１００は、箱形状に形成されている。収納ケース１００には、例えば、図示しないヒューズ及びコンタクタ等が収容されている。収納ケース１００とバッテリユニット５０Ｕとは、配線１０３によって電気的に接続されている。 The storage case 100 is formed into a box shape. The storage case 100 accommodates, for example, a fuse, a contactor, etc. (not shown). Storage case 100 and battery unit 50U are electrically connected by wiring 103.
　収納ケース１００には、２口の充電口１１０が接続されている。充電口１１０を介して収納ケース１００の内部の充電回路に電力が供給されて、バッテリユニット５０Ｕのバッテリ５０が充電される。充電口１１０は、フォークリフト１の後端部に配置されている。 Two charging ports 110 are connected to the storage case 100. Power is supplied to the charging circuit inside the storage case 100 through the charging port 110, and the battery 50 of the battery unit 50U is charged. Charging port 110 is arranged at the rear end of forklift 1.
［フォークリフト用のバッテリの配置例２］
　図５を用いて、バッテリ５０の配置の他の例を説明する。図５は、作業車両用バッテリの配置の他の例を左前方からみた斜視図である。図５に示す例では、４つのバッテリ５０が組み合わされている。２つのバッテリ５０をバッテリケース６０の側壁６４同士を向かい合わせたものが、上下２段に重ねられている。４つのバッテリ５０は、電気的に直列に接続される。図５においては、配線の一部の図示を省略している。４つのバッテリ５０を、バッテリユニット５０Ｕという。図５に示す例では、バッテリユニット５０Ｕは、４つのバッテリ５０を備える。 [Example 2 of battery arrangement for forklift]
Another example of the arrangement of the battery 50 will be explained using FIG. 5. FIG. 5 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left. In the example shown in FIG. 5, four batteries 50 are combined. Two batteries 50 with side walls 64 of battery cases 60 facing each other are stacked in two layers, one above the other. The four batteries 50 are electrically connected in series. In FIG. 5, illustration of a part of the wiring is omitted. The four batteries 50 are referred to as a battery unit 50U. In the example shown in FIG. 5, the battery unit 50U includes four batteries 50.
　バッテリユニット５０Ｕと台座８１とフォークリフト１のフレーム１１との固定方法は、配置例１と同様である。 The method of fixing the battery unit 50U, the pedestal 81, and the frame 11 of the forklift 1 is the same as in the arrangement example 1.
　上下２段に重ねられたバッテリ５０は、上段のバッテリケース６０と下段のバッテリケース２０とが、同じ向きで重ねられている。上段のバッテリケース６０の脚部６８３の貫通孔６８５（図３参照）と、下段のバッテリケース６０の脚部６８４の貫通孔６８６（図３参照）とを重ねて、ボルト８７によって固定される。上段のバッテリケース６０の脚部７１２の貫通孔７１４（図３参照）と、下段のバッテリケース６０の脚部７１３の貫通孔７１５（図３参照）とを重ねて、ボルト８５によって固定される。上段のバッテリケース６０の脚部７２２の貫通孔７２４（図３参照）と、下段のバッテリケース６０の脚部７２３の貫通孔７２５（図３参照）とを重ねて、ボルト８４によって固定される。 In the batteries 50 stacked in two layers, the upper battery case 60 and the lower battery case 20 are stacked in the same direction. The through holes 685 (see FIG. 3) of the legs 683 of the upper battery case 60 and the through holes 686 (see FIG. 3) of the legs 684 of the lower battery case 60 are overlapped and fixed with bolts 87. The through holes 714 (see FIG. 3) of the legs 712 of the upper battery case 60 and the through holes 715 (see FIG. 3) of the legs 713 of the lower battery case 60 are overlapped and fixed with bolts 85. The through holes 724 (see FIG. 3) of the legs 722 of the upper battery case 60 and the through holes 725 (see FIG. 3) of the legs 723 of the lower battery case 60 are overlapped and fixed with bolts 84.
　図５に示す例では、バッテリユニット５０Ｕの上段の後方のバッテリケース６０の上方に、収納ケース１００が配置されている。 In the example shown in FIG. 5, the storage case 100 is arranged above the battery case 60 at the rear of the upper stage of the battery unit 50U.
［効果］
　以上説明したように、側壁６１及び側壁６２に、電気的な配線を引き出す貫通孔６７が配置されて、側壁６３及び側壁６４、底部６５及び蓋部６６には貫通孔が配置されていない。実施形態によれば、バッテリケース６０は、防塵防水性能を有することができる。 [effect]
As explained above, the through holes 67 for leading out the electrical wiring are arranged in the side walls 61 and 62, and no through holes are arranged in the side walls 63 and 64, the bottom part 65, and the lid part 66. According to the embodiment, the battery case 60 can have dustproof and waterproof performance.
　実施形態によれば、バッテリケース６０は、側壁６１及び側壁６２にリブ部６８を備え、側壁６３に凸部６９及びリブ部７１とリブ部７２とを備える。実施形態は、バッテリケース６０の強度を向上することができる。 According to the embodiment, the battery case 60 includes a rib portion 68 on the side wall 61 and a side wall 62, and a convex portion 69 and a rib portion 71 and a rib portion 72 on the side wall 63. Embodiments can improve the strength of the battery case 60.
　これに対して、従来のような、必要な数のモジュール５３を収納可能な大型のケースにおいては、シール面が大きく、寸法精度を高めることが困難である。このため、防水防塵構造にすることが困難であった。さらに、大型のケースにおいては、強度を確保するためのリブ構造を取ることが困難であった。 On the other hand, in a conventional large case that can accommodate the required number of modules 53, the sealing surface is large and it is difficult to improve dimensional accuracy. For this reason, it has been difficult to provide a waterproof and dustproof structure. Furthermore, in large cases, it has been difficult to provide a rib structure to ensure strength.
　実施形態によれば、複数のバッテリセル５１を収納したモジュールケース５２を備えたモジュール５３を複数バッテリケース６０に収納して、バッテリ５０の１つのユニットとする。実施形態は、側壁６４が平面状に形成されているので、２つのバッテリケース６０の側壁６４同士を向かい合わせ、面で接触させて組み合わせることができる。実施形態によれば、フォークリフト１の搭載アプリケーションが異なる場合でも、バッテリ５０を１つのユニットとして１つ又は複数を組み合わせて使用することができる。このように、実施形態は、汎用性を高め、作業車両の搭載アプリケーションに容易に適用可能にすることができる。 According to the embodiment, a module 53 including a module case 52 housing a plurality of battery cells 51 is housed in a plurality of battery cases 60 to form one unit of the battery 50. In the embodiment, since the side walls 64 are formed in a planar shape, the side walls 64 of the two battery cases 60 can be combined by facing each other and making surface contact. According to the embodiment, even if the forklift 1 is loaded with different applications, one battery 50 or a plurality of batteries 50 can be used in combination as one unit. In this way, embodiments may be more versatile and easily adaptable to on-board applications on work vehicles.
　これに対して、従来は、フォークリフト１の搭載アプリケーションごとに、必要な数のモジュール５３を収納可能な大型のケースを設計していた。これにより、ケースの強度設計もフォークリフト１の機種ごとに行う必要があり、コストと手間とが増加していた。 In contrast, in the past, a large case was designed that could accommodate the required number of modules 53 for each application mounted on the forklift 1. As a result, it is necessary to design the strength of the case for each model of forklift 1, which increases cost and effort.
　実施形態は、側壁６１及び側壁６２は、側壁６３及び側壁６４よりも長手方向の長さが短い。実施形態は、側壁６３には凸部６９が配置されている。実施形態によれば、フォークリフト１の後端部において幅が狭くなっている部分に、バッテリケース６０の凸部６９が位置するように配置することができる。実施形態は、フォークリフト１の後端部の限られたスペースに効率的にバッテリ５０を搭載することができる。 In the embodiment, the side wall 61 and the side wall 62 have a shorter length in the longitudinal direction than the side wall 63 and the side wall 64. In the embodiment, a protrusion 69 is arranged on the side wall 63. According to the embodiment, the convex portion 69 of the battery case 60 can be arranged so as to be located in a portion where the width is narrow at the rear end portion of the forklift 1. In the embodiment, the battery 50 can be efficiently mounted in the limited space at the rear end of the forklift 1.
（第２実施形態）
［ショベル］
　図６は、第２実施形態に抱えるショベルを左方から見た側壁図である。図７は、ショベルに配置された作業車両用バッテリを示す平面図である。実施形態においては、作業車両１がショベル１であることとする。ショベル１は、バッテリ５０からの電力で駆動されるバッテリショベルである。 (Second embodiment)
[Shovel]
FIG. 6 is a side wall view of the shovel held in the second embodiment, viewed from the left. FIG. 7 is a plan view showing a work vehicle battery arranged in an excavator. In the embodiment, it is assumed that the work vehicle 1 is an excavator 1. The shovel 1 is a battery shovel driven by power from a battery 50.
　以下において、ショベル１は、図示しない作業機が配置された側が前方であり、外装が配置された側が後方である。実施形態においては、左右とは前方に対する左右をいうものとする。左右方向は、ショベル１の本体としての車体１０の幅方向である。下方は、履帯２５と接触する平面（接地平面）に直交し、かつ接地平面から地面に向かう側である。上方向は、下方向の逆方向である。 In the following, the shovel 1 has a front side on which a working machine (not shown) is arranged, and a rear side on which an exterior is arranged. In the embodiment, left and right refer to left and right with respect to the front. The left-right direction is the width direction of the vehicle body 10 as the main body of the excavator 1. The lower side is perpendicular to the plane (ground plane) in contact with the crawler belt 25 and is the side facing the ground from the ground plane. The upward direction is the opposite direction to the downward direction.
　車体１０は、フレーム１１を有する。 The vehicle body 10 has a frame 11.
　バッテリ５０は、ショベル１の後部に配置されている。車体１０の後方における下方には、バッテリ５０が配置される。 The battery 50 is placed at the rear of the shovel 1. A battery 50 is arranged below and at the rear of the vehicle body 10.
　ショベルの後端部は、旋回半径に応じた円弧形状になっている。 The rear end of the shovel has an arc shape that corresponds to the turning radius.
［ショベル用のバッテリの配置例１］
　図８、図９を用いて、バッテリ５０の配置の他の例を説明する。図８は、作業車両用バッテリの配置の他の例を左前方からみた斜視図である。図９は、作業車両用バッテリの配置の他の例を右後方からみた斜視図である。図８、図９に示す例では、２つのバッテリ５０が上下に組み合わされている。上段のバッテリケース６０と下段のバッテリケース２０とは、同じ向きで重ねられている。２つのバッテリ５０は、電気的に直列に接続される。図８、図９においては、配線の一部の図示を省略している。２つのバッテリ５０を、バッテリユニット５０Ｕという。図８、図９に示す例では、バッテリユニット５０Ｕは、２つのバッテリ５０を備える。バッテリケース６０の凸部６９が、ショベルの後端部の円弧形状の部分に位置する。 [Example 1 of battery arrangement for excavators]
Another example of the arrangement of the battery 50 will be described using FIGS. 8 and 9. FIG. 8 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the front left. FIG. 9 is a perspective view of another example of the arrangement of the work vehicle battery, viewed from the right rear. In the example shown in FIGS. 8 and 9, two batteries 50 are combined vertically. The upper battery case 60 and the lower battery case 20 are stacked in the same direction. The two batteries 50 are electrically connected in series. In FIGS. 8 and 9, illustration of some wiring is omitted. The two batteries 50 are referred to as a battery unit 50U. In the example shown in FIGS. 8 and 9, the battery unit 50U includes two batteries 50. A convex portion 69 of the battery case 60 is located in an arc-shaped portion at the rear end of the shovel.
　上段のバッテリケース６０の側壁６４には、収納ケース１００を支持する支持部８９が配置されている。支持部８９は、側面視においてＬ字型に形成されている。支持部８９は、側壁６４に沿って延在する側壁８９１と、側壁８９１の下方の端部から前方に延びる底部８９２とを備える。収納ケース１００は、底部８９２上に載置される。 A support portion 89 that supports the storage case 100 is arranged on the side wall 64 of the upper battery case 60. The support portion 89 is formed into an L-shape when viewed from the side. The support portion 89 includes a side wall 891 extending along the side wall 64 and a bottom portion 892 extending forward from the lower end of the side wall 891. Storage case 100 is placed on bottom 892.
　上下２段に重ねられたバッテリ５０は、上段のバッテリケース６０の脚部６８３の貫通孔６８５（図３参照）と、下段のバッテリケース６０の脚部６８４の貫通孔６８６（図３参照）とを重ねて、ボルト８７によって固定される。上段のバッテリケース６０の脚部７１２の貫通孔７１４（図３参照）と、下段のバッテリケース６０の脚部７１３の貫通孔７１５（図３参照）とを重ねて、ボルト８５によって固定される。上段のバッテリケース６０の脚部７２２の貫通孔７２４（図３参照）と、下段のバッテリケース６０の脚部７２３の貫通孔７２５（図３参照）とを重ねて、ボルト８４によって固定される。 The batteries 50 stacked in two tiers have a through hole 685 (see FIG. 3) in the leg 683 of the upper battery case 60 and a through hole 686 (see FIG. 3) in the leg 684 of the lower battery case 60. are overlapped and fixed with bolts 87. The through holes 714 (see FIG. 3) of the legs 712 of the upper battery case 60 and the through holes 715 (see FIG. 3) of the legs 713 of the lower battery case 60 are overlapped and fixed with bolts 85. The through holes 724 (see FIG. 3) of the legs 722 of the upper battery case 60 and the through holes 725 (see FIG. 3) of the legs 723 of the lower battery case 60 are overlapped and fixed with bolts 84.
　バッテリユニット５０Ｕは、台座８１Ｆ及び台座８１Ｒ上に載置されて、ショベルのフレーム１１上に載置される。台座８１Ｆ及び台座８１Ｒは、板状に形成される。バッテリユニット５０Ｕは、下段のバッテリケース６０のリブ部６８の貫通孔６８５（図３参照）と台座８１Ｆに設けられた図示しない貫通孔とに挿通されたボルト８３によって台座８１Ｆ上に固定される。バッテリユニット５０Ｕは、下段のバッテリケース６０のリブ部７１の貫通孔７１４（図３参照）と台座８１Ｒに設けられた図示しない貫通孔とに挿通されたボルト８５によって台座８１Ｒ上に固定される。バッテリユニット５０Ｕは、下段のバッテリケース６０のリブ部７２の貫通孔７２４（図３参照）と台座８１Ｒに設けられた図示しない貫通孔とに挿通されたボルト８４によって台座８１Ｒ上に固定される。このようにして、バッテリユニット５０Ｕは、台座８１Ｆ及び台座８１Ｒ上に固定される。 The battery unit 50U is placed on the pedestal 81F and the pedestal 81R, and is placed on the frame 11 of the excavator. The pedestal 81F and the pedestal 81R are formed into plate shapes. The battery unit 50U is fixed on the pedestal 81F by a bolt 83 inserted through a through hole 685 (see FIG. 3) of the rib portion 68 of the lower battery case 60 and a not-shown through hole provided in the pedestal 81F. The battery unit 50U is fixed on the pedestal 81R by a bolt 85 inserted through a through hole 714 (see FIG. 3) of the rib portion 71 of the lower battery case 60 and a not-shown through hole provided in the pedestal 81R. The battery unit 50U is fixed on the pedestal 81R by a bolt 84 inserted through a through hole 724 (see FIG. 3) of the rib portion 72 of the lower battery case 60 and a not-shown through hole provided in the pedestal 81R. In this way, battery unit 50U is fixed on pedestal 81F and pedestal 81R.
［ショベル用のバッテリの配置例２］
　図１０を用いて、バッテリ５０の配置の他の例を説明する。図１０は、作業車両用バッテリの配置の他の例を左前方からみた斜視図である。図１０に示す例では、１つのバッテリ５０が配置される。図１０においては、配線の一部の図示を省略している。 [Excavator battery arrangement example 2]
Another example of the arrangement of the battery 50 will be described using FIG. 10. FIG. 10 is a perspective view of another example of the arrangement of the battery for a work vehicle, viewed from the left front. In the example shown in FIG. 10, one battery 50 is arranged. In FIG. 10, illustration of a part of the wiring is omitted.
　バッテリユニット５０Ｕと台座８１Ｆ及び台座８１Ｒとショベル１のフレーム１１との固定方法は、配置例１と同様である。 The method of fixing the battery unit 50U, the pedestal 81F, the pedestal 81R, and the frame 11 of the shovel 1 is the same as in the arrangement example 1.
［効果］
　以上説明したように、実施形態によれば、ショベル１の搭載アプリケーションに応じて、バッテリ５０を１つのユニットとして１つ又は複数を組み合わせて使用することができる。 [effect]
As described above, according to the embodiment, one battery 50 or a combination of a plurality of batteries 50 can be used as one unit depending on the application installed on the shovel 1.
　１…フォークリフト（作業車両）、１０…車体、１１…フレーム、５０…バッテリ、５０Ｕ…バッテリユニット、５１…バッテリセル、５２…モジュールケース、５３…モジュール、６０…バッテリケース、６１…側壁、６２…側壁、６３…側壁、６４…側壁、６５…底部、６６…蓋部、６７…貫通孔、６８…リブ部、６８１…リブ本体部、６８２…リブ本体部、６８３…脚部、６８４…脚部、６８５…貫通孔、６８６…貫通孔、６９…凸部、７１…リブ部、７１１…リブ本体部、７１２…脚部、７１３…脚部、７２…リブ部、７２１…リブ本体部、７２２…脚部、７２３…脚部、７３…孔、１００…収納ケース、１１０…充電口。 DESCRIPTION OF SYMBOLS 1... Forklift (work vehicle), 10... Vehicle body, 11... Frame, 50... Battery, 50U... Battery unit, 51... Battery cell, 52... Module case, 53... Module, 60... Battery case, 61... Side wall, 62... Side wall, 63... Side wall, 64... Side wall, 65... Bottom, 66... Lid, 67... Through hole, 68... Rib, 681... Rib main body, 682... Rib main body, 683... Leg, 684... Leg , 685... Through hole, 686... Through hole, 69... Convex part, 71... Rib part, 711... Rib body part, 712... Leg part, 713... Leg part, 72... Rib part, 721... Rib body part, 722... Leg portion, 723... Leg portion, 73... Hole, 100... Storage case, 110... Charging port.

Claims (6)

  1. 　作業車両の動力源である作業車両用バッテリであって、
    　複数のバッテリセルと、前記複数のバッテリセルを収納したモジュールケースとを備えたモジュールと、
    　複数の前記モジュールを収納したバッテリケースと、
    　を備え、
    　前記バッテリケースは、
    　向かい合う一対の側壁と、前記一対の側壁以外の他の一対の側壁とを備え、
    　前記他の一対の側壁のうちの一方の側壁に配置された、少なくとも１つの前記モジュールを収納可能な凸部を備える、
    　作業車両用バッテリ。     A work vehicle battery that is a power source for a work vehicle,
    A module including a plurality of battery cells and a module case housing the plurality of battery cells;
    a battery case housing a plurality of the modules;
    Equipped with
    The battery case is
    comprising a pair of opposing side walls and a pair of side walls other than the pair of side walls,
    a convex portion arranged on one side wall of the other pair of side walls and capable of housing at least one of the modules;
    Batteries for work vehicles.
  2. 　前記一対の側壁は、前記他の一対の側壁よりも長手方向の長さが短い、
    　請求項１に記載の作業車両用バッテリ。     The pair of side walls have a shorter length in the longitudinal direction than the other pair of side walls.
    The battery for a work vehicle according to claim 1.
  3. 　前記他の一対の側壁のうちの他方の側壁は、平面状に形成されている、
    　請求項２に記載の作業車両用バッテリ。     The other side wall of the other pair of side walls is formed into a planar shape.
    The battery for a work vehicle according to claim 2.
  4. 　前記バッテリケースは、前記一対の側壁に、電気的な配線を引き出す孔を備える、
    　請求項２に記載の作業車両用バッテリ。     The battery case includes a hole in the pair of side walls for leading out electrical wiring.
    The battery for a work vehicle according to claim 2.
  5. 　前記他の一対の側壁のうちの他方の側壁に配置された、バッテリ用のコントローラを支持する支持部、
    　を備える、請求項１から３のいずれか一項に記載の作業車両用バッテリ。     a support portion that supports a battery controller, the support portion being disposed on the other side wall of the other pair of side walls;
    The work vehicle battery according to any one of claims 1 to 3, comprising:
  6. 　請求項１から５のいずれか一項に記載の作業車両用バッテリと、
    　前記作業車両用バッテリが配置された車体フレームと、
    　を備え、
    　前記作業車両用バッテリは、前記車体フレームの後方に配置されている、
    　作業車両。     A work vehicle battery according to any one of claims 1 to 5,
    a vehicle body frame in which the work vehicle battery is arranged;
    Equipped with
    The work vehicle battery is disposed at the rear of the vehicle body frame.
    work vehicle.
PCT/JP2023/005946 2022-03-31 2023-02-20 Work vehicle battery and work vehicle WO2023188990A1 (en)

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JP2022-060871 2022-03-31

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015167024A1 (en) * 2015-06-22 2015-11-05 株式会社小松製作所 Battery-type work vehicle and battery for work vehicle
JP2017152249A (en) * 2016-02-25 2017-08-31 株式会社クボタ Mobile vehicle with electric travel driving device
JP2020061380A (en) * 2020-01-06 2020-04-16 株式会社Ｍ−Ｔｅｃ Housing structure for battery module

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015167024A1 (en) * 2015-06-22 2015-11-05 株式会社小松製作所 Battery-type work vehicle and battery for work vehicle
JP2017152249A (en) * 2016-02-25 2017-08-31 株式会社クボタ Mobile vehicle with electric travel driving device
JP2020061380A (en) * 2020-01-06 2020-04-16 株式会社Ｍ−Ｔｅｃ Housing structure for battery module

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