WO2014061401A1 - Industrial vehicle - Google Patents

Industrial vehicle Download PDF

Info

Publication number
WO2014061401A1
WO2014061401A1 PCT/JP2013/075544 JP2013075544W WO2014061401A1 WO 2014061401 A1 WO2014061401 A1 WO 2014061401A1 JP 2013075544 W JP2013075544 W JP 2013075544W WO 2014061401 A1 WO2014061401 A1 WO 2014061401A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
standing
standing portion
battery
counterweight
Prior art date
Application number
PCT/JP2013/075544
Other languages
French (fr)
Japanese (ja)
Inventor
英史 大石
加藤　崇行
慎太郎 渡▲辺▼
崇 酒井
浩生 植田
直人 守作
和樹 前田
Original Assignee
株式会社 豊田自動織機
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 豊田自動織機 filed Critical 株式会社 豊田自動織機
Publication of WO2014061401A1 publication Critical patent/WO2014061401A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07513—Details concerning the chassis
    • B66F9/07531—Battery compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07554—Counterweights

Definitions

  • the technology of the present disclosure relates to an industrial vehicle in which a battery pack including a counterweight and a secondary battery that is thermally coupled to the counterweight is mounted on the vehicle body.
  • Patent Document 1 For example, a forklift described in Patent Document 1 is known as an industrial vehicle equipped with a counterweight.
  • the forklift described in Patent Document 1 is provided with a counterweight for balancing the load at the rear part of the vehicle body.
  • the counterweight is formed with a housing recess extending in the vehicle width direction, and a battery (secondary battery) is placed in the housing recess.
  • An object of the present disclosure is to provide an industrial vehicle that can improve the assembling property of the secondary battery and can improve the heat dissipation of the secondary battery.
  • An industrial vehicle that achieves the above object includes a vehicle body, a battery pack that is mounted on the vehicle body, and that includes a counterweight and a secondary battery that is thermally coupled to the counterweight.
  • the counterweight includes two weight members. Each of the weight members has a weight main body extending in one direction, and a standing portion standing from the weight main body and where the secondary battery is installed. The two weight members are connected to each other with the weight bodies facing each other in a state where the standing portions are separated from each other.
  • the perspective view which shows the battery pack of the forklift of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2.
  • the perspective view which shows the 1st weight member and 2nd weight member in the battery pack of FIG. The front view which shows the 1st weight member and 2nd weight member of FIG.
  • Sectional drawing which shows the battery pack of another example Sectional drawing which shows the battery pack of another example. Sectional drawing which shows the battery pack of another example. Sectional drawing which shows the battery pack of another example.
  • a forklift that is an embodiment of an industrial vehicle will be described with reference to FIGS.
  • “front”, “rear”, “left”, “right”, “upper”, and “lower” are based on a state in which the forklift driver faces the front of the forklift.
  • the forklift 10 includes a vehicle body 11, a drive wheel 12 positioned at the front lower portion of the vehicle body 11, a steering wheel 13 positioned at the rear lower portion of the vehicle body 11, and a cargo handling device positioned in front of the vehicle body 11. And have.
  • the cargo handling apparatus includes a mast 14 erected in front of the vehicle body 11 and a pair of left and right forks 16 attached to the mast 14 via a lift bracket 15.
  • the fork 16 is lifted and lowered together with the lift bracket 15 by driving a lift cylinder 17 connected to the mast 14.
  • the fork 16 is tilted together with the mast 14 by driving a tilt cylinder 18 connected to the mast 14.
  • a load 19 is mounted on the fork 16.
  • the vehicle body 11 is equipped with a traveling motor M1 as a drive source for the drive wheels 12 and a cargo handling motor M2 as a drive source for the fork 16.
  • a cab 20 In the center of the vehicle body 11, a cab 20 is provided.
  • the cab 20 is provided with a driving seat 21 on which an operator (driver) can sit.
  • a handle 22 is provided in front of the driving seat 21.
  • a battery pack 30 is mounted under the cab 20. Hereinafter, the battery pack 30 will be described in detail.
  • the battery pack 30 includes a counterweight 31 for balancing the load 19 mounted on the fork 16.
  • the counterweight 31 is formed by connecting a pair of weight members, that is, a first weight member 41 made of metal (for example, iron) and a second weight member 51.
  • the first weight member 41 and the second weight member 51 are the same member.
  • the first weight member 41 and the second weight member 51 will be described.
  • the first weight member 41 includes a first weight body 42 having a rectangular plate shape extending in the horizontal direction (one direction), and a first weight body 42 in the short direction of the first weight body 42.
  • a first standing portion 43 standing from a first end 42a in a direction perpendicular to the horizontal direction.
  • the first standing portion 43 extends from the first longitudinal end 42c of the first weight body 42 to the second longitudinal end 42d and has a rectangular plate shape.
  • the first standing portion 43 has a proximal end connected to the first weight main body 42 and a distal end opposite to the proximal end.
  • the first weight member 41 has an L-shaped cross section perpendicular to the longitudinal direction of the first weight body 42.
  • the first weight main body 42 has a plurality of through holes H penetrating in the short direction of the first weight main body 42 at a predetermined interval in the longitudinal direction of the first weight main body 42 (three in this embodiment). One) is formed. One surface in the thickness direction of the first standing portion 43 (the surface on the side where the first weight main body 42 is located) functions as an installation surface 43a to which the battery module 60 is joined.
  • the second weight member 51 is the same member as the first weight member 41, detailed description thereof is omitted.
  • the second weight member 51 includes a second weight body 52 corresponding to the first weight body 42 and a second standing portion 53 corresponding to the first standing portion 43.
  • the battery module 60 is fixed to the installation surface 43 a of the first upright portion 43 and the installation surface 53 a of the second upright portion 53.
  • two battery modules 60 are provided in the longitudinal direction of the standing portions 43 and 53, and three battery modules 60 are provided in the short direction of the standing portions 43 and 53.
  • Each battery module 60 includes a rectangular battery 61 as a secondary battery (for example, a lithium ion secondary battery or a nickel-hydrogen storage battery), and a rectangular flat plate heat transfer plate that is thermally coupled to the rectangular battery 61. 62 are alternately arranged in parallel. The heat transfer plate 62 is provided adjacent to the square battery 61.
  • brackets 63 are fixed to the square batteries 61 located at both ends of the square batteries 61 in the juxtaposition direction. And the battery module 60 is being fixed to each standing part 43,53 by screwing the volt
  • the weight main bodies 42 and 52 of the weight members 41 and 51 have ends connected to the standing portions 43 and 53, that is, short-side first ends 42a and 52a, It has the short direction 2nd end 42b, 52b on the opposite side to the hand direction 1st end 42a, 52a.
  • Each weight main body 42, 52 has a through hole H that opens to the first short direction end 42a, 52a and the second short direction end 42b, 52b.
  • the first weight member 41 and the second weight member 51 are configured such that the bolt B2 inserted into the through hole H from the short-side first end 52a side is the short-side first end 42a side of the first weight body 42. By being screwed onto the nut N, they are fixed and connected to each other.
  • the first weight member 41 and the second weight member 51 are connected to each other with the second ends 42b and 52b in the short direction facing each other and abutting each other. That is, the end of the first weight member 41 opposite to the end where the first weight main body 42 is erected and the second weight main body 52 of the second weight member 51 are erected. The opposite end and the opposite end are connected to each other. As a result, the first weight body 42 and the second weight body 52 are spaced apart from each other, and the counterweight 31 has a substantially U shape.
  • a rectangular plate-shaped bottom 32 is formed by the first weight body 42 and the second weight body 52, and the first standing portion 43 and the bottom end 32 a, 32 b from both ends 32 a and 32 b of the bottom 32.
  • a second standing portion 53 is standing.
  • the counterweight 31 including the bottom 32, the first standing portion 43, and the second standing portion 53 is substantially U-shaped.
  • the first end 42 a in the short direction of the first weight body 42 coincides with the first end 32 a in the short direction of the bottom 32
  • the first end 52 a in the short direction of the second weight body 52 is the bottom 32.
  • the second end 32b in the short direction.
  • the first end 42a in the short direction of the first weight body 42 on which the first standing portion 43 is erected is the end portion of the first weight body 42 connected to the second weight body 52. This is the end opposite to the (second end 42b in the short direction).
  • the first end 52a in the short direction of the second weight body 52 on which the second standing portion 53 is erected is the end of the second weight body 52 connected to the first weight body 42 ( This is the end opposite to the second end 52b) in the short direction.
  • the 1st standing part 43 and the 2nd standing part 53 are spaced apart to the maximum in the transversal direction of the bottom part 32.
  • the installation surface 43a of the first upright portion 43 and the installation surface 53a of the second upright portion 53 are opposed to each other, and the battery module 60 provided in the first upright portion 43 and the second The battery modules 60 provided in the upright portion 53 face each other.
  • a top plate 71 having a rectangular flat plate shape is fixed to the upper surfaces of the first standing portion 43 and the second standing portion 53. Further, lid members 72 are provided on both side surfaces in the longitudinal direction of the first standing portion 43 and the second standing portion 53.
  • the notch 34 forms a horizontal placement surface at a position lower than the upper surfaces of the standing portions 43 and 53.
  • a mounting plate 73 having a rectangular flat plate shape is fixed to the mounting surfaces of the standing portions 43 and 53.
  • a storage case 75 that stores battery control equipment (for example, a DCDC converter), a junction box (not shown) that stores wiring and relays, and the like are mounted.
  • a plate-like heat insulation that extends from the bottom portion 32 in a vertical direction (a direction different from the extending direction of the first weight body 42) and extends in the longitudinal direction of the bottom portion 32.
  • a member 81 is provided.
  • the heat insulating member 81 is made of a material having low thermal conductivity such as silicon-based material or alumina.
  • the heat insulating member 81 is provided between the battery module 60 provided in the first standing portion 43 and the battery module 60 provided in the second standing portion 53.
  • the first weight member 41 and the second weight member 51 are connected to each other to constitute a substantially U-shaped (or channel-shaped) counterweight 31. For this reason, after the battery module 60 is assembled to each of the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51, the first weight member 41 and The counterweight 31 can be formed by connecting the second weight member 51.
  • the counterweight 31 is formed by connecting a first weight member 41 and a second weight member 51. For this reason, after the battery module 60 is assembled to each of the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51, the first weight member 41 and The second weight member 51 can be connected, and the assembling property of the battery module 60 (square battery 61) can be improved.
  • the heat radiation area of the counterweight 31 is increased. Has increased. For this reason, the heat dissipation of the counterweight 31 can be improved, and the counterweight 31 is suppressed from being overheated. Therefore, the counterweight 31 can easily absorb the heat of the square battery 61, and the square battery 61 can be efficiently cooled.
  • the first weight member 41 and the second weight member 51 are short-direction second ends opposite to the short-direction first ends 42a and 52a from which the standing portions 43 and 53 extend. 42b and 52b face each other and are connected. Since the first weight member 41 and the second weight member 51 are connected so that the first standing portion 43 and the second standing portion 53 are arranged to be spaced apart from each other as much as possible, Heat exchange between the first standing portion 43 and the second standing portion 53 is suppressed, and the heat dissipation of the counterweight 31 can be further improved.
  • a heat insulating member is provided between the battery module 60 (square battery 61) provided in the first standing portion 43 and the battery module 60 (square battery 61) provided in the second standing portion 53. 81 is provided. For this reason, heat exchange between the prismatic battery 61 provided in the first standing portion 43 and the prismatic battery 61 provided in the second standing portion 53 is suppressed.
  • the first weight member 41 and the second weight member 51 are configured such that the nut N is attached to the bolt B2 inserted in the through hole H formed in each of the first weight body 42 and the second weight body 52. They are connected by screwing. That is, by using a through bolt as the bolt B2, both the first weight body 42 and the second weight body 52 may be formed with a through hole H (in other words, a screw hole is formed in one weight body).
  • the first weight main body 42 and the second weight main body 52 do not need to have different shapes. For this reason, the 1st weight member 41 and the 2nd weight member 51 can be made into the same shape. Therefore, the number of parts can be reduced.
  • the counterweight 31 is provided with a first standing portion 43 and a second standing portion 53 at both ends 32a and 32b in the short direction of the bottom portion 32. For this reason, the center of gravity of the battery pack 30 is closer to the center of the battery pack 30 than when a standing portion is provided on only one of the lateral ends 32 a and 32 b of the bottom 32. For this reason, the weight balance of the vehicle body 11 is improved.
  • the embodiment may be changed as follows.
  • the first end 42a in the short direction of the first weight body 42 and the first end 52a in the short direction of the second weight body 52 may be connected.
  • the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51 are provided apart from each other, and the first standing portion 43 and the second A gap S is formed between the two standing portions 53.
  • This gap S functions as a flow path through which air flows, and can increase the contact area with air as compared with the case where the first standing portion 43 and the second standing portion 53 are in contact with each other.
  • the heat dissipation of the counterweight 31 can be improved.
  • the short-direction second end 42 b of the first weight body 42 and the short-direction first end 52 a of the second weight body 52 may be connected.
  • the thickness of the first standing portion 43 and the second standing portion 53 may be different.
  • the thickness of the second standing portion 53 is increased.
  • the second weight member 51 is thicker than the first standing portion 43 so that the heat capacity of the second weight member 51 is larger than that of the first weight member 41.
  • the housing case 75 and the junction box are disposed closer to the second standing portion 53 than the first standing portion 43, and between the housing case 75 and the first standing portion.
  • a heat insulating member 82 extending in the longitudinal direction of the bottom portion 32 may be provided between the mounting plate 73 and the top plate 71.
  • the second standing portion 53 is replaced with the first standing portion 43. Thicker than.
  • heat exchange between the first weight member 41 and the battery control device housed in the housing case 75, the relay in the junction box, and the like is regulated by the heat insulating member.
  • the heat generated by the battery control device housed in the housing case 75, the relay in the junction box, or the like can be managed by causing the second weight member 51 to absorb these members. Thermal management can be performed together.
  • the housing case 75 and the junction box are disposed on the second standing portion 53 side, and the placement plate 73 and the top plate 71 are disposed between the housing case 75 and the first standing portion 43.
  • the first standing portion 43 and the second standing portion 53 may have the same thickness.
  • the prismatic battery 61 of the battery module 60 may be held by a battery holder that holds the prismatic battery 61.
  • the square battery 61 is thermally coupled to the first weight member 41 and the second weight member 51 by the battery holder.
  • a cylindrical battery or a laminated battery may be used as the secondary battery.
  • the weight members 41 and 51 may have a cross-sectional shape perpendicular to the longitudinal direction of the weight main bodies 42 and 52 other than the L-shape.
  • the shape of the first weight body 42 and the second weight body 52 may be changed.
  • it may be a polygonal shape such as a pentagonal shape or a hexagonal shape in a plan view, or a circular shape. That is, the first weight main body 42 and the second weight main body 52 may have any shape as long as the first standing portion 43 and the second standing portion 53 can be formed.
  • the shape of the first standing part 43 and the second standing part 53 may be changed.
  • it may be a polygonal column shape such as a pentagonal column shape or a hexagonal column shape, or a columnar shape. That is, the first upright portion 43 and the second upright portion 53 may have any shape as long as the battery module 60 (square battery 61) can be assembled.
  • the first weight member 41 and the second weight member 51 may be fixed to each other by a method other than the bolt B2.
  • the heat insulating member 81 may not be provided.
  • the first weight member 41 and the second weight member 51 may have different shapes.
  • the direction in which the first weight main body 42 and the second weight main body 52 are extended may be other than the horizontal direction.
  • it may be a vertical direction or a direction inclined with respect to the horizontal direction.
  • the first standing portion 43 and the second standing portion 53 are extended in any direction as long as they are different from the extending direction of the first weight body 42 and the second weight body 52. May be.
  • the industrial vehicle is not limited to the forklift 10, and may be a power shovel, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

This industrial vehicle comprises a vehicle body, and a battery pack (30) that is mounted on the vehicle body and has a counterweight (31) and a secondary battery (60) thermally coupled to the counterweight (31). The counterweight (31) includes two weight members (41, 51). Each weight member (41, 51) has a weight body (42, 52) extending in one direction, and a standing portion (43, 53) that stands from the weight body (42, 52) and on which the secondary battery (60) is mounted. The two weight members (41, 51) are connected by facing weight members (42, 52), with the standing portions (43, 53) being separated.

Description

産業車両Industrial vehicle
　本開示の技術は、カウンタウェイトと、カウンタウェイトに熱的に結合される二次電池と、を備える電池パックを車体に搭載した産業車両に関する。 The technology of the present disclosure relates to an industrial vehicle in which a battery pack including a counterweight and a secondary battery that is thermally coupled to the counterweight is mounted on the vehicle body.
　カウンタウェイトを備える産業車両としては、例えば、特許文献１に記載のフォークリフトが知られている。 For example, a forklift described in Patent Document 1 is known as an industrial vehicle equipped with a counterweight.
　特許文献１に記載のフォークリフトは、車体の後部に積荷とのつりあいをとるためのカウンタウェイトが設けられている。カウンタウェイトには、車幅方向に延びる収容凹部が形成されるとともに、収容凹部にはバッテリ（二次電池）が載置されている。 The forklift described in Patent Document 1 is provided with a counterweight for balancing the load at the rear part of the vehicle body. The counterweight is formed with a housing recess extending in the vehicle width direction, and a battery (secondary battery) is placed in the housing recess.
特開２００９－２７４６５１号公報JP 2009-274651 A
　近年、二次電池の搭載量の増加に伴い、カウンタウェイトへの二次電池の組み付け性を向上させることが望まれている。また、産業車両においては、二次電池が発する熱を効率よく放熱することが望まれている。 In recent years, with the increase in the amount of secondary batteries mounted, it is desired to improve the ease of assembling the secondary battery to the counterweight. In industrial vehicles, it is desired to efficiently dissipate heat generated by secondary batteries.
　本開示の目的は、二次電池の組み付け性を向上させることができ、かつ、二次電池の放熱性を高めることができる産業車両を提供することにある。 An object of the present disclosure is to provide an industrial vehicle that can improve the assembling property of the secondary battery and can improve the heat dissipation of the secondary battery.
　前記の目的を達成する産業車両は、車体と、前記車体に搭載されるとともに、カウンタウェイトと、前記カウンタウェイトに熱的に結合される二次電池と、を有する電池パックと、を備える。前記カウンタウェイトは、２つのウェイト部材を含む。前記ウェイト部材の各々は、一方向に延設されるウェイト本体と、前記ウェイト本体から立設されるとともに前記二次電池が設置される立設部と、を有する。前記２つのウェイト部材は、前記立設部同士が離間した状態で、対向するウェイト本体同士で連結されている。 An industrial vehicle that achieves the above object includes a vehicle body, a battery pack that is mounted on the vehicle body, and that includes a counterweight and a secondary battery that is thermally coupled to the counterweight. The counterweight includes two weight members. Each of the weight members has a weight main body extending in one direction, and a standing portion standing from the weight main body and where the secondary battery is installed. The two weight members are connected to each other with the weight bodies facing each other in a state where the standing portions are separated from each other.
実施形態のフォークリフトを示す概略側面図。The schematic side view which shows the forklift of embodiment. 図１のフォークリフトの電池パックを示す斜視図。The perspective view which shows the battery pack of the forklift of FIG. 図２の３－３線断面図。FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. 図２の電池パックにおける第１のウェイト部材及び第２のウェイト部材を示す斜視図。The perspective view which shows the 1st weight member and 2nd weight member in the battery pack of FIG. 図４の第１のウェイト部材及び第２のウェイト部材を示す正面図。The front view which shows the 1st weight member and 2nd weight member of FIG. 別例の電池パックを示す断面図。Sectional drawing which shows the battery pack of another example. 別例の電池パックを示す断面図。Sectional drawing which shows the battery pack of another example. 別例の電池パックを示す断面図。Sectional drawing which shows the battery pack of another example.
　産業車両の一実施形態であるフォークリフトについて、図１～図５に従って説明する。以下の説明において「前」「後」「左」「右」「上」「下」は、フォークリフトの運転者がフォークリフトの前方を向いた状態を基準とする。 A forklift that is an embodiment of an industrial vehicle will be described with reference to FIGS. In the following description, “front”, “rear”, “left”, “right”, “upper”, and “lower” are based on a state in which the forklift driver faces the front of the forklift.
　図１に示すように、フォークリフト１０は、車体１１と、車体１１の前下部に位置する駆動輪１２と、車体１１の後下部に位置する操舵輪１３と、車体１１の前に位置する荷役装置とを有する。荷役装置は、車体１１の前に立設されたマスト１４と、リフトブラケット１５を介してマスト１４に取り付けられた左右一対のフォーク１６とを有する。そして、フォーク１６は、マスト１４に連結されたリフトシリンダ１７の駆動により、リフトブラケット１５とともに昇降される。また、フォーク１６は、マスト１４に連結されたティルトシリンダ１８の駆動により、マスト１４とともに傾動される。フォーク１６には、積荷１９が搭載される。車体１１には、駆動輪１２の駆動源となる走行用モータＭ１と、フォーク１６の駆動源となる荷役用モータＭ２が搭載されている。 As shown in FIG. 1, the forklift 10 includes a vehicle body 11, a drive wheel 12 positioned at the front lower portion of the vehicle body 11, a steering wheel 13 positioned at the rear lower portion of the vehicle body 11, and a cargo handling device positioned in front of the vehicle body 11. And have. The cargo handling apparatus includes a mast 14 erected in front of the vehicle body 11 and a pair of left and right forks 16 attached to the mast 14 via a lift bracket 15. The fork 16 is lifted and lowered together with the lift bracket 15 by driving a lift cylinder 17 connected to the mast 14. Further, the fork 16 is tilted together with the mast 14 by driving a tilt cylinder 18 connected to the mast 14. A load 19 is mounted on the fork 16. The vehicle body 11 is equipped with a traveling motor M1 as a drive source for the drive wheels 12 and a cargo handling motor M2 as a drive source for the fork 16.
　また、車体１１の中央には、運転室２０が設けられている。運転室２０には、作業者（運転者）が着座可能な運転シート２１が設けられている。運転シート２１の前方にはハンドル２２が設けられている。運転室２０の下には、電池パック３０が搭載されている。以下、電池パック３０について詳細に説明を行う。 In the center of the vehicle body 11, a cab 20 is provided. The cab 20 is provided with a driving seat 21 on which an operator (driver) can sit. A handle 22 is provided in front of the driving seat 21. A battery pack 30 is mounted under the cab 20. Hereinafter, the battery pack 30 will be described in detail.
　図２及び図３に示すように、電池パック３０は、フォーク１６に搭載される積荷１９とつりあいをとるためのカウンタウェイト３１を備えている。カウンタウェイト３１は、一対のウェイト部材、すなわち金属製（例えば、鉄など）の第１のウェイト部材４１と第２のウェイト部材５１とを連結してなる。本実施形態において、第１のウェイト部材４１と第２のウェイト部材５１は、同一の部材である。以下、第１のウェイト部材４１及び第２のウェイト部材５１について説明する。 As shown in FIGS. 2 and 3, the battery pack 30 includes a counterweight 31 for balancing the load 19 mounted on the fork 16. The counterweight 31 is formed by connecting a pair of weight members, that is, a first weight member 41 made of metal (for example, iron) and a second weight member 51. In the present embodiment, the first weight member 41 and the second weight member 51 are the same member. Hereinafter, the first weight member 41 and the second weight member 51 will be described.
　図４に示すように、第１のウェイト部材４１は、水平方向（一方向）に延設される矩形板状をなす第１のウェイト本体４２と、第１のウェイト本体４２の短手方向第１端４２ａから水平方向に直交する方向に立設される第１の立設部４３とを備える。第１の立設部４３は、第１のウェイト本体４２の長手方向第１端４２ｃから長手方向第２端４２ｄに亘って延び、矩形板状をなす。第１の立設部４３は、第１のウェイト本体４２に接続された基端と、その基端とは反対側の先端とを有する。第１の立設部４３の先端には、第１の立設部４３を第１の立設部４３の厚み方向（第１のウェイト本体４２の延設方向）に切り欠いた切欠部３４が形成されている。第１のウェイト部材４１は、第１のウェイト本体４２の長手方向と直交する断面形状がＬ字状をなしている。 As shown in FIG. 4, the first weight member 41 includes a first weight body 42 having a rectangular plate shape extending in the horizontal direction (one direction), and a first weight body 42 in the short direction of the first weight body 42. A first standing portion 43 standing from a first end 42a in a direction perpendicular to the horizontal direction. The first standing portion 43 extends from the first longitudinal end 42c of the first weight body 42 to the second longitudinal end 42d and has a rectangular plate shape. The first standing portion 43 has a proximal end connected to the first weight main body 42 and a distal end opposite to the proximal end. At the tip of the first standing portion 43, there is a notch portion 34 in which the first standing portion 43 is notched in the thickness direction of the first standing portion 43 (the extending direction of the first weight body 42). Is formed. The first weight member 41 has an L-shaped cross section perpendicular to the longitudinal direction of the first weight body 42.
　第１のウェイト本体４２には、第１のウェイト本体４２の短手方向に貫通する貫通孔Ｈが、第１のウェイト本体４２の長手方向に所定の間隔をあけて複数（本実施形態では３つ）形成されている。第１の立設部４３の厚み方向一面（第１のウェイト本体４２が位置する側の面）は、電池モジュール６０が接合される設置面４３ａとして機能する。 The first weight main body 42 has a plurality of through holes H penetrating in the short direction of the first weight main body 42 at a predetermined interval in the longitudinal direction of the first weight main body 42 (three in this embodiment). One) is formed. One surface in the thickness direction of the first standing portion 43 (the surface on the side where the first weight main body 42 is located) functions as an installation surface 43a to which the battery module 60 is joined.
　第２のウェイト部材５１は、第１のウェイト部材４１と同一の部材であるため、詳細な説明を省略する。なお、第２のウェイト部材５１は、第１のウェイト本体４２に対応する第２のウェイト本体５２と、第１の立設部４３に対応する第２の立設部５３とを有する。 Since the second weight member 51 is the same member as the first weight member 41, detailed description thereof is omitted. The second weight member 51 includes a second weight body 52 corresponding to the first weight body 42 and a second standing portion 53 corresponding to the first standing portion 43.
　図５に示すように、第１の立設部４３の設置面４３ａ及び第２の立設部５３の設置面５３ａには、電池モジュール６０が固定されている。本実施形態では、電池モジュール６０は、各立設部４３，５３の長手方向に２個ずつ設けられるとともに、立設部４３，５３の短手方向に３個ずつ設けられている。 As shown in FIG. 5, the battery module 60 is fixed to the installation surface 43 a of the first upright portion 43 and the installation surface 53 a of the second upright portion 53. In the present embodiment, two battery modules 60 are provided in the longitudinal direction of the standing portions 43 and 53, and three battery modules 60 are provided in the short direction of the standing portions 43 and 53.
　各電池モジュール６０は、二次電池（例えば、リチウムイオン二次電池や、ニッケル・水素蓄電池）としての角型電池６１と、角型電池６１と熱的に結合される矩形平板状の伝熱プレート６２と、を交互に並設して構成されている。伝熱プレート６２は、角型電池６１に隣り合うように設けられている。電池モジュール６０において、角型電池６１の並設方向両端に位置する角型電池６１には、ブラケット６３が固定されている。そして、ブラケット６３に挿入されたボルトＢ１を各立設部４３，５３に螺合することで、電池モジュール６０は各立設部４３，５３に固定されている。これにより、角型電池６１は、カウンタウェイト３１に熱的に結合されている。 Each battery module 60 includes a rectangular battery 61 as a secondary battery (for example, a lithium ion secondary battery or a nickel-hydrogen storage battery), and a rectangular flat plate heat transfer plate that is thermally coupled to the rectangular battery 61. 62 are alternately arranged in parallel. The heat transfer plate 62 is provided adjacent to the square battery 61. In the battery module 60, brackets 63 are fixed to the square batteries 61 located at both ends of the square batteries 61 in the juxtaposition direction. And the battery module 60 is being fixed to each standing part 43,53 by screwing the volt | bolt B1 inserted in the bracket 63 to each standing part 43,53. Thereby, the square battery 61 is thermally coupled to the counterweight 31.
　図２及び図３に示すように、各ウェイト部材４１，５１のウェイト本体４２，５２は、立設部４３，５３に接続された端部、すなわち短手方向第１端４２ａ，５２ａと、短手方向第１端４２ａ，５２ａとは反対側の短手方向第２端４２ｂ，５２ｂとを有する。各ウェイト本体４２，５２は、短手方向第１端４２ａ，５２ａ及び短手方向第２端４２ｂ，５２ｂに開口する貫通孔Ｈを有する。 As shown in FIGS. 2 and 3, the weight main bodies 42 and 52 of the weight members 41 and 51 have ends connected to the standing portions 43 and 53, that is, short-side first ends 42a and 52a, It has the short direction 2nd end 42b, 52b on the opposite side to the hand direction 1st end 42a, 52a. Each weight main body 42, 52 has a through hole H that opens to the first short direction end 42a, 52a and the second short direction end 42b, 52b.
　第１のウェイト部材４１と第２のウェイト部材５１とは、短手方向第１端５２ａ側から貫通孔Ｈに挿入されたボルトＢ２を第１のウェイト本体４２の短手方向第１端４２ａ側でナットＮに螺合することで、互いに固定及び連結されている。 The first weight member 41 and the second weight member 51 are configured such that the bolt B2 inserted into the through hole H from the short-side first end 52a side is the short-side first end 42a side of the first weight body 42. By being screwed onto the nut N, they are fixed and connected to each other.
　第１のウェイト部材４１と第２のウェイト部材５１とは、短手方向第２端４２ｂ，５２ｂを向き合わせ且つ突き合わせた状態で互いに連結されている。すなわち、第１のウェイト部材４１における第１のウェイト本体４２が立設されている端部とは反対側の端部と、第２のウェイト部材５１における第２のウェイト本体５２が立設されている端部とは反対側の端部とが互いに連結されている。これにより、第１のウェイト本体４２と第２のウェイト本体５２とは互いに離間して配置され、カウンタウェイト３１は、略Ｕ字状をなす。 The first weight member 41 and the second weight member 51 are connected to each other with the second ends 42b and 52b in the short direction facing each other and abutting each other. That is, the end of the first weight member 41 opposite to the end where the first weight main body 42 is erected and the second weight main body 52 of the second weight member 51 are erected. The opposite end and the opposite end are connected to each other. As a result, the first weight body 42 and the second weight body 52 are spaced apart from each other, and the counterweight 31 has a substantially U shape.
　具体的にいえば、第１のウェイト本体４２及び第２のウェイト本体５２によって矩形板状の底部３２が形成され、底部３２の短手方向両端３２ａ，３２ｂからは第１の立設部４３及び第２の立設部５３が立設している。これにより、底部３２、第１の立設部４３及び第２の立設部５３を含むカウンタウェイト３１は略Ｕ字状をなす。なお、第１のウェイト本体４２の短手方向第１端４２ａは、底部３２の短手方向第１端３２ａと一致し、第２のウェイト本体５２の短手方向第１端５２ａは、底部３２の短手方向第２端３２ｂと一致している。このため、第１の立設部４３が立設された第１のウェイト本体４２の短手方向第１端４２ａは、第２のウェイト本体５２に連結された第１のウェイト本体４２の端部（短手方向第２端４２ｂ）とは反対側の端部となる。また、第２の立設部５３が立設された第２のウェイト本体５２の短手方向第１端５２ａは、第１のウェイト本体４２に連結された第２のウェイト本体５２の端部（短手方向第２端５２ｂ）とは反対側の端部となる。これにより、本実施形態においては、第１の立設部４３と第２の立設部５３とは、底部３２の短手方向において最大限に離間して設けられている。第１の立設部４３の設置面４３ａと、第２の立設部５３の設置面５３ａとは、互いに対向しており、第１の立設部４３に設けられた電池モジュール６０と第２の立設部５３に設けられた電池モジュール６０とは、互いに対向している。 Specifically, a rectangular plate-shaped bottom 32 is formed by the first weight body 42 and the second weight body 52, and the first standing portion 43 and the bottom end 32 a, 32 b from both ends 32 a and 32 b of the bottom 32. A second standing portion 53 is standing. As a result, the counterweight 31 including the bottom 32, the first standing portion 43, and the second standing portion 53 is substantially U-shaped. It should be noted that the first end 42 a in the short direction of the first weight body 42 coincides with the first end 32 a in the short direction of the bottom 32, and the first end 52 a in the short direction of the second weight body 52 is the bottom 32. And the second end 32b in the short direction. For this reason, the first end 42a in the short direction of the first weight body 42 on which the first standing portion 43 is erected is the end portion of the first weight body 42 connected to the second weight body 52. This is the end opposite to the (second end 42b in the short direction). In addition, the first end 52a in the short direction of the second weight body 52 on which the second standing portion 53 is erected is the end of the second weight body 52 connected to the first weight body 42 ( This is the end opposite to the second end 52b) in the short direction. Thereby, in this embodiment, the 1st standing part 43 and the 2nd standing part 53 are spaced apart to the maximum in the transversal direction of the bottom part 32. The installation surface 43a of the first upright portion 43 and the installation surface 53a of the second upright portion 53 are opposed to each other, and the battery module 60 provided in the first upright portion 43 and the second The battery modules 60 provided in the upright portion 53 face each other.
　第１の立設部４３及び第２の立設部５３の上面には、矩形平板状をなす天板７１が固定されている。また、第１の立設部４３及び第２の立設部５３の長手方向の両側面には、蓋部材７２が設けられている。 A top plate 71 having a rectangular flat plate shape is fixed to the upper surfaces of the first standing portion 43 and the second standing portion 53. Further, lid members 72 are provided on both side surfaces in the longitudinal direction of the first standing portion 43 and the second standing portion 53.
　切欠部３４は、各立設部４３，５３の上面よりも低い位置に、水平な載置面を形成する。この立設部４３，５３の載置面には、矩形平板状をなす載置板７３が固定されている。載置板７３には、電池制御機器（例えば、ＤＣＤＣコンバータ）を収容する収容ケース７５や、配線やリレーが収容される図示しないジャンクションボックスなどが載置されている。 The notch 34 forms a horizontal placement surface at a position lower than the upper surfaces of the standing portions 43 and 53. A mounting plate 73 having a rectangular flat plate shape is fixed to the mounting surfaces of the standing portions 43 and 53. On the mounting plate 73, a storage case 75 that stores battery control equipment (for example, a DCDC converter), a junction box (not shown) that stores wiring and relays, and the like are mounted.
　底部３２の短手方向の中央には、底部３２から垂直方向（第１のウェイト本体４２の延設方向とは異なる方向）に延設されるとともに、底部３２の長手方向に延びる板状の断熱部材８１が設けられている。断熱部材８１は、例えば、シリコン系材料やアルミナなど熱伝導率の低い材料から形成されている。断熱部材８１は、第１の立設部４３に設けられた電池モジュール６０と第２の立設部５３に設けられた電池モジュール６０の間に設けられている。 At the center in the short direction of the bottom portion 32, a plate-like heat insulation that extends from the bottom portion 32 in a vertical direction (a direction different from the extending direction of the first weight body 42) and extends in the longitudinal direction of the bottom portion 32. A member 81 is provided. The heat insulating member 81 is made of a material having low thermal conductivity such as silicon-based material or alumina. The heat insulating member 81 is provided between the battery module 60 provided in the first standing portion 43 and the battery module 60 provided in the second standing portion 53.
　次に、電池パック３０の作用について説明する。 Next, the operation of the battery pack 30 will be described.
　フォークリフト１０の走行などに伴って、角型電池６１が放電を行うと、角型電池６１が発熱する。この熱は、カウンタウェイト３１に吸収される。 When the square battery 61 discharges as the forklift 10 travels, the square battery 61 generates heat. This heat is absorbed by the counterweight 31.
　本実施形態では、第１のウェイト部材４１と第２のウェイト部材５１とを連結することで、略Ｕ字状（或いはチャネル形状）のカウンタウェイト３１を構成している。このため、第１のウェイト部材４１の第１の立設部４３及び第２のウェイト部材５１の第２の立設部５３のそれぞれに電池モジュール６０を組み付けた後に、第１のウェイト部材４１と第２のウェイト部材５１とを連結して、カウンタウェイト３１を形成することができる。 In the present embodiment, the first weight member 41 and the second weight member 51 are connected to each other to constitute a substantially U-shaped (or channel-shaped) counterweight 31. For this reason, after the battery module 60 is assembled to each of the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51, the first weight member 41 and The counterweight 31 can be formed by connecting the second weight member 51.
　したがって、上記実施形態によれば、以下のような効果を得ることができる。 Therefore, according to the above embodiment, the following effects can be obtained.
　（１）角型電池６１は、カウンタウェイト３１に熱的に結合されているため、角型電池６１が発熱すると、この熱はカウンタウェイト３１に吸収される。このため、角型電池６１の放熱性を高めることができる。また、カウンタウェイト３１は、第１のウェイト部材４１と第２のウェイト部材５１とを連結して形成されている。このため、第１のウェイト部材４１の第１の立設部４３及び第２のウェイト部材５１の第２の立設部５３のそれぞれに電池モジュール６０を組み付けた後に、第１のウェイト部材４１と第２のウェイト部材５１とを連結することができ、電池モジュール６０（角型電池６１）の組み付け性を向上させることができる。更に、第１のウェイト部材４１の第１の立設部４３と、第２のウェイト部材５１の第２の立設部５３とは、離間して設けられているため、カウンタウェイト３１の放熱面積が増加している。このため、カウンタウェイト３１の放熱性を向上させることができ、カウンタウェイト３１が過熱状態になることが抑制される。したがって、カウンタウェイト３１が角型電池６１の熱を吸収しやすく、角型電池６１を効率よく冷却することができる。 (1) Since the square battery 61 is thermally coupled to the counterweight 31, when the square battery 61 generates heat, the heat is absorbed by the counterweight 31. For this reason, the heat dissipation of the square battery 61 can be improved. The counterweight 31 is formed by connecting a first weight member 41 and a second weight member 51. For this reason, after the battery module 60 is assembled to each of the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51, the first weight member 41 and The second weight member 51 can be connected, and the assembling property of the battery module 60 (square battery 61) can be improved. Further, since the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51 are provided apart from each other, the heat radiation area of the counterweight 31 is increased. Has increased. For this reason, the heat dissipation of the counterweight 31 can be improved, and the counterweight 31 is suppressed from being overheated. Therefore, the counterweight 31 can easily absorb the heat of the square battery 61, and the square battery 61 can be efficiently cooled.
　（２）また、第１のウェイト部材４１の第１の立設部４３と、第２のウェイト部材５１の第２の立設部５３とは、離間して設けられているため、第１の立設部４３と第２の立設部５３との間で熱交換が行われることが抑制される。また、第１の立設部４３と第２の立設部５３が接して設けられる場合に比べて、熱が一部に集中することが抑制される。 (2) Since the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51 are provided apart from each other, the first Heat exchange between the standing portion 43 and the second standing portion 53 is suppressed. Moreover, compared with the case where the 1st standing part 43 and the 2nd standing part 53 are provided in contact, it is suppressed that heat concentrates on a part.
　（３）第１のウェイト部材４１と第２のウェイト部材５１とは、立設部４３，５３が延設される短手方向第１端４２ａ，５２ａとは反対側の短手方向第２端４２ｂ，５２ｂ同士を向き合わせて連結されている。第１の立設部４３と第２の立設部５３とが最大限に離間して配置されるように第１のウェイト部材４１と第２のウェイト部材５１とが連結されているため、第１の立設部４３と第２の立設部５３との間で熱交換が行われることが抑制されて、カウンタウェイト３１の放熱性を更に向上させることができる。 (3) The first weight member 41 and the second weight member 51 are short-direction second ends opposite to the short-direction first ends 42a and 52a from which the standing portions 43 and 53 extend. 42b and 52b face each other and are connected. Since the first weight member 41 and the second weight member 51 are connected so that the first standing portion 43 and the second standing portion 53 are arranged to be spaced apart from each other as much as possible, Heat exchange between the first standing portion 43 and the second standing portion 53 is suppressed, and the heat dissipation of the counterweight 31 can be further improved.
　（４）第１の立設部４３に設けられる電池モジュール６０（角型電池６１）と第２の立設部５３に設けられる電池モジュール６０（角型電池６１）との間には、断熱部材８１が設けられている。このため、第１の立設部４３に設けられる角型電池６１と第２の立設部５３に設けられる角型電池６１との間で熱交換が行われることが抑制される。 (4) Between the battery module 60 (square battery 61) provided in the first standing portion 43 and the battery module 60 (square battery 61) provided in the second standing portion 53, a heat insulating member is provided. 81 is provided. For this reason, heat exchange between the prismatic battery 61 provided in the first standing portion 43 and the prismatic battery 61 provided in the second standing portion 53 is suppressed.
　（５）第１のウェイト部材４１と第２のウェイト部材５１とは、第１のウェイト本体４２及び第２のウェイト本体５２それぞれに形成された貫通孔Ｈに挿入されたボルトＢ２にナットＮを螺合することで連結されている。すなわち、通しボルトをボルトＢ２として用いることで、第１のウェイト本体４２と第２のウェイト本体５２には、ともに貫通孔Ｈを形成すればよく（言い換えれば、一方のウェイト本体にねじ孔を形成しなくともよく）、第１のウェイト本体４２と第２のウェイト本体５２の形状を異なる形状とする必要がない。このため、第１のウェイト部材４１と第２のウェイト部材５１を同一の形状とすることができる。したがって、部品点数の削減が図られる。 (5) The first weight member 41 and the second weight member 51 are configured such that the nut N is attached to the bolt B2 inserted in the through hole H formed in each of the first weight body 42 and the second weight body 52. They are connected by screwing. That is, by using a through bolt as the bolt B2, both the first weight body 42 and the second weight body 52 may be formed with a through hole H (in other words, a screw hole is formed in one weight body). The first weight main body 42 and the second weight main body 52 do not need to have different shapes. For this reason, the 1st weight member 41 and the 2nd weight member 51 can be made into the same shape. Therefore, the number of parts can be reduced.
　（６）カウンタウェイト３１には、底部３２の短手方向両端３２ａ，３２ｂに第１の立設部４３及び第２の立設部５３が設けられている。このため、底部３２の短手方向両端３２ａ，３２ｂのうち一方にのみ立設部が設けられる場合に比べて、電池パック３０の重心が電池パック３０の中心に近くなっている。このため、車体１１の重量バランスが向上される。 (6) The counterweight 31 is provided with a first standing portion 43 and a second standing portion 53 at both ends 32a and 32b in the short direction of the bottom portion 32. For this reason, the center of gravity of the battery pack 30 is closer to the center of the battery pack 30 than when a standing portion is provided on only one of the lateral ends 32 a and 32 b of the bottom 32. For this reason, the weight balance of the vehicle body 11 is improved.
　なお、実施形態は以下のように変更してもよい。 The embodiment may be changed as follows.
　図６に示すように、第１のウェイト本体４２の短手方向第１端４２ａと第２のウェイト本体５２の短手方向第１端５２ａとが連結されていてもよい。この場合、第１のウェイト部材４１の第１の立設部４３と、第２のウェイト部材５１の第２の立設部５３とは離間して設けられ、第１の立設部４３と第２の立設部５３との間には、隙間Ｓが形成される。この隙間Ｓは、空気が流れる流路として機能し、第１の立設部４３と第２の立設部５３とが接している場合に比べて、空気との接触面積を増やすことができるため、カウンタウェイト３１の放熱性を向上させることができる。 As shown in FIG. 6, the first end 42a in the short direction of the first weight body 42 and the first end 52a in the short direction of the second weight body 52 may be connected. In this case, the first standing portion 43 of the first weight member 41 and the second standing portion 53 of the second weight member 51 are provided apart from each other, and the first standing portion 43 and the second A gap S is formed between the two standing portions 53. This gap S functions as a flow path through which air flows, and can increase the contact area with air as compared with the case where the first standing portion 43 and the second standing portion 53 are in contact with each other. The heat dissipation of the counterweight 31 can be improved.
　図７に示すように、第１のウェイト本体４２の短手方向第２端４２ｂと第２のウェイト本体５２の短手方向第１端５２ａとが連結されていてもよい。 As shown in FIG. 7, the short-direction second end 42 b of the first weight body 42 and the short-direction first end 52 a of the second weight body 52 may be connected.
　上記各実施形態において、第１の立設部４３と第２の立設部５３の厚みは異なっていてもよい。例えば、第２の立設部５３に組み付けられる電池モジュール６０の数が第１の立設部４３に組み付けられる電池モジュール６０の数よりも多い場合には、第２の立設部５３の厚みを第１の立設部４３よりも厚くして第２のウェイト部材５１の熱容量を第１のウェイト部材４１よりも大きくする。 In the above embodiments, the thickness of the first standing portion 43 and the second standing portion 53 may be different. For example, when the number of battery modules 60 assembled to the second standing portion 53 is larger than the number of battery modules 60 assembled to the first standing portion 43, the thickness of the second standing portion 53 is increased. The second weight member 51 is thicker than the first standing portion 43 so that the heat capacity of the second weight member 51 is larger than that of the first weight member 41.
　図８に示すように、収容ケース７５やジャンクションボックスを第１の立設部４３よりも第２の立設部５３に近い位置に配置するとともに、収容ケース７５と第１の立設部の間に、載置板７３と天板７１の間で底部３２の長手方向に延びる断熱部材８２を設けてもよい。この場合、第１の立設部４３と第２の立設部５３とにそれぞれ組み付けられる電池モジュール６０の数が同じであっても、第２の立設部５３を第１の立設部４３よりも厚くする。収容ケース７５の内部に収容された電池制御機器や、ジャンクションボックス内のリレーなどが発熱すると、この熱は、載置板７３や、周囲の気体を介して第２のウェイト部材５１に吸収される。一方、収容ケース７５の内部に収容された電池制御機器や、ジャンクションボックス内のリレーなどと第１のウェイト部材４１との熱交換は、断熱部材によって規制されている。この場合、収容ケース７５に収容される電池制御機器や、ジャンクションボックス内のリレーなどが発する熱を第２のウェイト部材５１に吸収させることで管理することができ、これらの部材を電池モジュール６０とあわせて熱管理することができる。 As shown in FIG. 8, the housing case 75 and the junction box are disposed closer to the second standing portion 53 than the first standing portion 43, and between the housing case 75 and the first standing portion. In addition, a heat insulating member 82 extending in the longitudinal direction of the bottom portion 32 may be provided between the mounting plate 73 and the top plate 71. In this case, even if the number of battery modules 60 assembled to the first standing portion 43 and the second standing portion 53 is the same, the second standing portion 53 is replaced with the first standing portion 43. Thicker than. When the battery control device housed in the housing case 75 or the relay in the junction box generates heat, this heat is absorbed by the second weight member 51 via the mounting plate 73 and the surrounding gas. . On the other hand, heat exchange between the first weight member 41 and the battery control device housed in the housing case 75, the relay in the junction box, and the like is regulated by the heat insulating member. In this case, the heat generated by the battery control device housed in the housing case 75, the relay in the junction box, or the like can be managed by causing the second weight member 51 to absorb these members. Thermal management can be performed together.
　また、上述したように、収容ケース７５やジャンクションボックスを第２の立設部５３側に配置するとともに、収容ケース７５と第１の立設部４３の間に、載置板７３と天板７１の間で底部３２の長手方向に延びる断熱部材８２を設ける場合、第２の立設部５３に組み付けられる電池モジュール６０の数を減らしてもよい。この場合、第１の立設部４３と第２の立設部５３の厚さを同一の厚みにしてもよい。 Further, as described above, the housing case 75 and the junction box are disposed on the second standing portion 53 side, and the placement plate 73 and the top plate 71 are disposed between the housing case 75 and the first standing portion 43. When providing the heat insulation member 82 extended in the longitudinal direction of the bottom part 32 between, you may reduce the number of the battery modules 60 assembled | attached to the 2nd standing part 53. FIG. In this case, the first standing portion 43 and the second standing portion 53 may have the same thickness.
　電池モジュール６０の角型電池６１は、角型電池６１を保持する電池ホルダに保持されていてもよい。この場合、角型電池６１は、電池ホルダにより第１のウェイト部材４１及び第２のウェイト部材５１に熱的に結合される。 The prismatic battery 61 of the battery module 60 may be held by a battery holder that holds the prismatic battery 61. In this case, the square battery 61 is thermally coupled to the first weight member 41 and the second weight member 51 by the battery holder.
　二次電池として、円筒型電池や、ラミネート型の電池を用いてもよい。 As the secondary battery, a cylindrical battery or a laminated battery may be used.
　ウェイト部材４１，５１は、ウェイト本体４２，５２の長手方向と直交する断面形状がＬ字状以外の形状であってもよい。 The weight members 41 and 51 may have a cross-sectional shape perpendicular to the longitudinal direction of the weight main bodies 42 and 52 other than the L-shape.
　第１のウェイト本体４２及び第２のウェイト本体５２の形状を変更してもよい。例えば、平面視において五角形状や六角形状などの多角形状や、円形状などでもよい。すなわち、第１のウェイト本体４２及び第２のウェイト本体５２は、第１の立設部４３及び第２の立設部５３が形成できれば、どのような形状であってもよい。 The shape of the first weight body 42 and the second weight body 52 may be changed. For example, it may be a polygonal shape such as a pentagonal shape or a hexagonal shape in a plan view, or a circular shape. That is, the first weight main body 42 and the second weight main body 52 may have any shape as long as the first standing portion 43 and the second standing portion 53 can be formed.
　第１の立設部４３及び第２の立設部５３の形状を変更してもよい。例えば、五角柱状や六角柱状などの多角柱状や、円柱状などであってもよい。すなわち、第１の立設部４３及び第２の立設部５３は、電池モジュール６０（角型電池６１）を組み付けることができれば、どのような形状であってもよい。 The shape of the first standing part 43 and the second standing part 53 may be changed. For example, it may be a polygonal column shape such as a pentagonal column shape or a hexagonal column shape, or a columnar shape. That is, the first upright portion 43 and the second upright portion 53 may have any shape as long as the battery module 60 (square battery 61) can be assembled.
　第１のウェイト部材４１と第２のウェイト部材５１とは、ボルトＢ２以外の方法で互いに固定されていてもよい。例えば、ボルトやナット等の締結具以外の締結具、或いは接着材や溶接などで固定されていてもよい。 The first weight member 41 and the second weight member 51 may be fixed to each other by a method other than the bolt B2. For example, you may fix with fasteners other than fasteners, such as a volt | bolt and a nut, or an adhesive material or welding.
　断熱部材８１は設けられていなくてもよい。 The heat insulating member 81 may not be provided.
　第１のウェイト部材４１と第２のウェイト部材５１は、異なる形状であってもよい。 The first weight member 41 and the second weight member 51 may have different shapes.
　第１のウェイト本体４２及び第２のウェイト本体５２が延設される方向は、水平方向以外であってもよい。例えば、垂直方向でもよいし、水平方向に対して傾いた方向であってもよい。また、第１の立設部４３及び第２の立設部５３は、第１のウェイト本体４２及び第２のウェイト本体５２の延設方向と異なる方向であれば、いかなる方向に延設されていてもよい。 The direction in which the first weight main body 42 and the second weight main body 52 are extended may be other than the horizontal direction. For example, it may be a vertical direction or a direction inclined with respect to the horizontal direction. The first standing portion 43 and the second standing portion 53 are extended in any direction as long as they are different from the extending direction of the first weight body 42 and the second weight body 52. May be.
　産業車両は、フォークリフト１０に限定されず、例えば、パワーショベルなどであってもよい。 The industrial vehicle is not limited to the forklift 10, and may be a power shovel, for example.

Claims (5)

  1. 　車体と、
    　前記車体に搭載されるとともに、カウンタウェイトと、前記カウンタウェイトに熱的に結合される二次電池と、を有する電池パックと、を備え、
    　前記カウンタウェイトは、２つのウェイト部材を含み、
    　前記ウェイト部材の各々は、一方向に延設されるウェイト本体と、前記ウェイト本体から立設されるとともに前記二次電池が設置される立設部と、を有し、
    　前記２つのウェイト部材は、前記立設部同士が離間した状態で、対向するウェイト本体同士で連結されている産業車両。     The car body,
    A battery pack that is mounted on the vehicle body and includes a counterweight and a secondary battery that is thermally coupled to the counterweight, and
    The counterweight includes two weight members,
    Each of the weight members has a weight main body extending in one direction, and a standing portion that is erected from the weight main body and where the secondary battery is installed,
    The two weight members are industrial vehicles connected by weight bodies facing each other in a state where the standing portions are separated from each other.
  2. 　前記ウェイト本体は板状をなすとともに、第１端と、該第１端と反対側の第２端と、を有し、
    　前記立設部は、前記ウェイト本体の前記第１端から延設され、
    　前記２つのウェイト部材は、前記ウェイト本体の前記第２端同士で連結されている請求項１に記載の産業車両。     The weight body has a plate shape, and has a first end and a second end opposite to the first end,
    The standing portion extends from the first end of the weight body,
    The industrial vehicle according to claim 1, wherein the two weight members are connected at the second ends of the weight main body.
  3. 　前記２つのウェイト部材の前記立設部は、第１の立設部と第２の立設部であり、
    　前記第１の立設部に設置される前記二次電池と、前記第２の立設部に設置される前記二次電池との間には、断熱部材が設けられる請求項２に記載の産業車両。     The standing parts of the two weight members are a first standing part and a second standing part,
    The industry according to claim 2, wherein a heat insulating member is provided between the secondary battery installed in the first upright portion and the secondary battery installed in the second upright portion. vehicle.
  4. 　前記２つのウェイト部材は同一形状をなす、請求項１乃至請求項３の何れか一項に記載の産業車両。 The industrial vehicle according to any one of claims 1 to 3, wherein the two weight members have the same shape.
  5. 　前記２つのウェイト部材の立設部は、互いに異なる厚みを有する請求項１乃至３の何れか一項に記載の産業車両。 The industrial vehicle according to any one of claims 1 to 3, wherein the standing portions of the two weight members have different thicknesses.
PCT/JP2013/075544 2012-10-18 2013-09-20 Industrial vehicle WO2014061401A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012230887A JP5660103B2 (en) 2012-10-18 2012-10-18 Industrial vehicle
JP2012-230887 2012-10-18

Publications (1)

Publication Number Publication Date
WO2014061401A1 true WO2014061401A1 (en) 2014-04-24

Family

ID=50487975

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/075544 WO2014061401A1 (en) 2012-10-18 2013-09-20 Industrial vehicle

Country Status (2)

Country Link
JP (1) JP5660103B2 (en)
WO (1) WO2014061401A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016129343A1 (en) * 2015-02-12 2016-08-18 株式会社豊田自動織機 Industrial vehicle
WO2017104176A1 (en) * 2015-12-15 2017-06-22 株式会社豊田自動織機 Battery pack and method for producing battery pack
EP3584212A2 (en) 2018-06-01 2019-12-25 Hyster-Yale Group, Inc. Lift truck with electrical motor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6303955B2 (en) * 2014-09-24 2018-04-04 株式会社豊田自動織機 Battery pack and industrial vehicle
JP6443113B2 (en) * 2015-02-19 2018-12-26 株式会社豊田自動織機 Battery pack manufacturing method and battery pack
JP6620503B2 (en) * 2015-10-14 2019-12-18 株式会社豊田自動織機 Battery pack and battery pack assembling method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437939A (en) * 1994-01-06 1995-08-01 Gnb Industrial Battery Company Sealed lead-acid battery tray assemblies and motive power vehicles using such battery tray assemblies
JP2000101271A (en) * 1998-09-18 2000-04-07 Mitsubishi Electric Corp Housing for outdoor electronic equipment
JP2003002600A (en) * 2001-06-15 2003-01-08 Toyota Industries Corp Cooling structure for controller in industrial vehicle, and forklift truck of counter-balance type
JP2008303058A (en) * 2007-06-11 2008-12-18 Komatsu Utility Co Ltd Work vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3226028B2 (en) * 1998-06-26 2001-11-05 三菱マテリアル株式会社 Anti-theft tag, method of attaching and detaching the same, and device for removing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437939A (en) * 1994-01-06 1995-08-01 Gnb Industrial Battery Company Sealed lead-acid battery tray assemblies and motive power vehicles using such battery tray assemblies
JP2000101271A (en) * 1998-09-18 2000-04-07 Mitsubishi Electric Corp Housing for outdoor electronic equipment
JP2003002600A (en) * 2001-06-15 2003-01-08 Toyota Industries Corp Cooling structure for controller in industrial vehicle, and forklift truck of counter-balance type
JP2008303058A (en) * 2007-06-11 2008-12-18 Komatsu Utility Co Ltd Work vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016129343A1 (en) * 2015-02-12 2016-08-18 株式会社豊田自動織機 Industrial vehicle
JP2016147588A (en) * 2015-02-12 2016-08-18 株式会社豊田自動織機 Industrial vehicle
WO2017104176A1 (en) * 2015-12-15 2017-06-22 株式会社豊田自動織機 Battery pack and method for producing battery pack
JP2017111899A (en) * 2015-12-15 2017-06-22 株式会社豊田自動織機 Battery pack and manufacturing method thereof
EP3584212A2 (en) 2018-06-01 2019-12-25 Hyster-Yale Group, Inc. Lift truck with electrical motor
US11427450B2 (en) 2018-06-01 2022-08-30 Hyster-Yale Group, Inc. Lift truck having advantageous design elements

Also Published As

Publication number Publication date
JP2014080282A (en) 2014-05-08
JP5660103B2 (en) 2015-01-28

Similar Documents

Publication Publication Date Title
JP5904113B2 (en) Battery module and battery module manufacturing method
WO2014061401A1 (en) Industrial vehicle
JP5590080B2 (en) Industrial vehicle
JP5621859B2 (en) Battery module
JP5573932B2 (en) Battery pack
WO2014045864A1 (en) Industrial vehicle
JP6127524B2 (en) Battery pack
JP5949422B2 (en) Industrial vehicle
JP5974721B2 (en) Battery pack
JP6123299B2 (en) Battery pack and industrial vehicle
JP2014110218A (en) Battery module
JP6155672B2 (en) Battery pack
JP6011281B2 (en) Battery pack
JP5482864B1 (en) Battery module
WO2014045863A1 (en) Industrial vehicle
JP6103192B2 (en) Battery pack
JP5978983B2 (en) Battery module
JP2014146461A (en) Battery pack
JP5978974B2 (en) Battery pack
JP6304426B2 (en) Battery pack
JP6036138B2 (en) Battery pack
JP2014137921A (en) Battery module

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13846407

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13846407

Country of ref document: EP

Kind code of ref document: A1