WO2023188990A1 - Batterie pour engin de chantier et engin de chantier - Google Patents

Batterie pour engin de chantier et engin de chantier 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
English (en)
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/fr

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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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne une batterie pour engin de chantier (50) qui est une source d'énergie pour un engin de chantier et qui comprend : des modules (53) qui comprennent chacun une pluralité d'éléments de batterie (51) et un boîtier de module (52) dans lequel sont stockés la pluralité d'éléments de batterie (51) ; et un boîtier de batterie (60) dans lequel sont stockés la pluralité de modules (53). Le boîtier de batterie (60) comprend une paire de parois latérales opposées (61, 62), une autre paire de parois latérales (63, 64) et une partie en saillie (69) qui est disposée sur la paroi latérale (63) et est apte à stocker au moins l'un des modules (53).
PCT/JP2023/005946 2022-03-31 2023-02-20 Batterie pour engin de chantier et engin de chantier WO2023188990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022060871A JP2023151313A (ja) 2022-03-31 2022-03-31 作業車両用バッテリ及び作業車両
JP2022-060871 2022-03-31

Publications (1)

Publication Number Publication Date
WO2023188990A1 true WO2023188990A1 (fr) 2023-10-05

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Application Number Title Priority Date Filing Date
PCT/JP2023/005946 WO2023188990A1 (fr) 2022-03-31 2023-02-20 Batterie pour engin de chantier et engin de chantier

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JP (1) JP2023151313A (fr)
WO (1) WO2023188990A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015167024A1 (fr) * 2015-06-22 2015-11-05 株式会社小松製作所 Véhicule de travail du type à batterie et batterie pour véhicule de travail
JP2017152249A (ja) * 2016-02-25 2017-08-31 株式会社クボタ 電動走行駆動装置を備えた作業車
JP2020061380A (ja) * 2020-01-06 2020-04-16 株式会社Ｍ−Ｔｅｃ バッテリモジュールの収納構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015167024A1 (fr) * 2015-06-22 2015-11-05 株式会社小松製作所 Véhicule de travail du type à batterie et batterie pour véhicule de travail
JP2017152249A (ja) * 2016-02-25 2017-08-31 株式会社クボタ 電動走行駆動装置を備えた作業車
JP2020061380A (ja) * 2020-01-06 2020-04-16 株式会社Ｍ−Ｔｅｃ バッテリモジュールの収納構造

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