Construction machine

Abstract

Provided is a construction machine. A construction machine (100) is provided with a battery case (30) for housing a battery (70). The battery case (30) has a bottom plate (31) and a plurality of vertical plates extending upward from the bottom plate (31). The plurality of riser plates include a pair of outer riser plates (32, 33). A battery (70) can be disposed in at least a portion of a space between the pair of outer vertical plates (32, 33). The plurality of risers also include a first intermediate riser (34) extending upwardly from the bottom plate (31) between a pair of outer risers (32, 33). Therefore, the strength of the battery case can be easily ensured.

Description

Technical Field

[0001] The present disclosure relates to construction machinery equipped with a battery housing for housing a battery. Background Art

[0002] Construction machinery equipped with a battery housing for housing a battery is disclosed in the Chinese Utility Model Bulletin CN216958322U. In this construction machinery, the battery housing has a base plate 21 and a pair of support plates 22 extending upward from the base plate 21. Since the battery is a heavy component, the battery housing is required to have a structure that can easily ensure strength. Summary of the Invention

[0003] An object of the present disclosure is to provide construction machinery equipped with a battery housing having a structure that can easily ensure strength.

[0004] The provided construction machinery includes: a battery housing for housing a battery, the battery housing having a bottom plate and a plurality of vertical plates extending upward from the bottom plate, the plurality of vertical plates including a pair of outer vertical plates, at least a part of the space between the pair of outer vertical plates being capable of accommodating the battery, and the plurality of vertical plates further including a first intermediate vertical plate extending upward from the bottom plate between the pair of outer vertical plates.

[0005] According to the construction machinery of the present disclosure, the strength of the battery housing can be easily ensured. Brief Description of the Drawings

[0006] Figure 1 is a side view showing the construction machinery according to the embodiment.

[0007] Figure 2 is a perspective view showing the upper slewing body of the construction machinery.

[0008] Figure 3 is a top view showing the inside of the machine room of the upper slewing body.

[0009] Figure 4 is a cross-sectional view showing the battery housing of the construction machinery and the structure around it.

[0010] Figure 5 is a cross-sectional view showing the battery housing and the structure around it, showing the state after removing the front plate of the battery housing.

[0011] Figure 6 is a view of the battery housing and the structure around it observed from the rear, and is Figure 1 a cross-sectional view taken along line VI-VI.

[0012] Figure 7 is a perspective view showing the battery housing and the battery housed in the battery housing.

[0013] Figure 8 It is a perspective view showing the battery housing.

[0014] Figure 9 It is a perspective view showing the battery housing, representing the state after removing a part of the upper plate.

[0015] Figure 10 It is a top view showing the battery housing.

[0016] Figure 11 It is a perspective view of the support plate of the battery cells of the battery and the support part of the battery housing.

[0017] Figure 12 It is a view showing a part of the battery cells and a part of the support part enlarged.

[0018] Figure 13 It is a perspective view of the beam member of the support part.

[0019] Figure 14 It is a cross-sectional view of the beam member.

[0020] Figure 15 It is a perspective view of the support plate.

[0021] Figure 16 It is a perspective view of the support plate.

[0022] Figure 17 It is a perspective view of the battery support device of the battery housing and the battery cells.

[0023] Figure 18 It is a perspective view of the body frame of the upper rotating body observed from obliquely below.

[0024] Figure 19 It is a view of the battery housing and its surrounding structure observed from the rear, and it is Figure 1 a cross-sectional view taken along line VI-VI.

[0025] Figure 20 It is observed from the right front obliquely Figure 4 a perspective view of the area enclosed by the dotted line in.

[0026] Figure 21 It is observed from the left front obliquely Figure 4 a perspective view of the area enclosed by the dotted line in.

[0027] Figure 22 It is a perspective view of the charging device of the construction machinery.

[0028] Figure 23 It is a perspective view of the charging device of the construction machinery. Detailed implementation manners

[0029] The implementation manners of the present disclosure will be described with reference to the accompanying drawings.

[0030] As Figure 1 and Figure 2 shown, the construction machinery 100 includes: a lower traveling body 1 including a traveling device; an upper revolving body 2 supported by the lower traveling body 1 so as to be capable of revolving relative to the lower traveling body 1 about a vertically extending revolving shaft Z; and a working device 3 supported by the upper revolving body 2. The construction machinery 100 related to the present implementation manner is a hydraulic excavator. However, the construction machinery of the present disclosure is not limited to a hydraulic excavator, and may also be other construction machinery such as a crane, a bulldozer, etc. The traveling device may be Figure 1 the crawler traveling device shown, or may be a traveling device having tires (not shown).

[0031] In addition, the front-rear direction and the left-right direction shown in the drawings are directions based on the orientations of the upper revolving body 2 and the working device 3, respectively. Specifically, the front-rear direction is a horizontal direction parallel to the length direction of the working device 3 when viewed from above, and the left-right direction is a horizontal direction perpendicular to the front-rear direction.

[0032] The working device 3 includes: a boom 4 mounted on the upper revolving body 2 so as to be able to rise and fall; an arm 5 rotatably mounted on the boom 4; and a distal attachment 6 rotatably mounted on the distal end of the arm 5. The distal attachment 6 in the present implementation manner is a bucket. However, the distal attachment may also be other distal attachments such as a grapple, a forklift, a crusher, a lifting magnet, etc.

[0033] The upper revolving body 2 includes a body frame 20, a cab 11 supported by the body frame 20, and an outer wall 13. The outer wall 13 is, for example, box-shaped and defines a machine room 14. The outer wall 13 may include: a hood 13A covering a battery case 30 described later from above; left and right side walls 13B covering the battery case 30 from the sides; and a rear wall 13C covering the battery case 30 from the rear.

[0034] The upper revolving body 2 houses various devices inside the machine room 14. Figure 3 represents various devices housed inside the machine room 14. The various devices will be described later. The upper revolving body 2 is an example of the body. The upper revolving body 2 may also include a counterweight 12 located at the rear of the upper revolving body 2. The counterweight 12 is a balancing weight for maintaining balance. When the weight of the devices arranged at the rear of the machine room 14 is large, the counterweight 12 may be omitted.

[0035] The body frame 20 is a member rotatably supported by the lower traveling body 1. The body frame 20 includes a frame main body 21 and a vertical body 22. The frame main body 21 supports the cab 11 and the outer wall 13. The frame main body 21 has an upper surface extending in the front-rear direction and sized to support the cab 11 and the outer wall 13. The vertical body 22 supports the boom 4 so as to be able to move up and down. The vertical body 22 includes a boom mounting portion 22A for mounting the base end portion 4A of the boom 4 shown by a dashed line in Figure 1 The boom mounting portion 22A constitutes the front side portion of the vertical body 22.

[0036] The cab 11 is arranged, for example, at the left front portion of the frame main body 21. A driver's seat, a joystick, an operation pedal, etc. are arranged in the cab 11.

[0037] The vertical body 22 is shaped like a structure that stands up from the frame main body 21 and extends in the front-rear direction as shown by a dashed line in Figure 1 The vertical body 22 includes a rear side portion 22B located behind the boom mounting portion 22A (front side portion). The rear side portion 22B is a portion located behind the boom mounting portion 22A and having a height lower than that of the boom mounting portion 22A.

[0038] In the present embodiment, as shown in Figure 1 , Figure 2 and Figure 3 , the vertical body 22 includes left and right vertical plates 23, 23 spaced apart from each other and facing each other. The left and right vertical plates 23, 23 are plate-shaped members standing up from the frame main body 21 and arranged so as to extend in the front-rear direction.

[0039] The construction machine 100 includes a plurality of actuators. Each of the plurality of actuators is supplied with working oil ejected from a hydraulic pump 62 described later and operates. The plurality of actuators include: a boom cylinder 7 for moving the boom 4 up and down; a bucket cylinder 8 for rotating the bucket 5; a distal attachment cylinder 9 for rotating the distal attachment 6; and a hydraulic motor 64 for rotating the upper swing body 2 relative to the lower traveling body 1.

[0040] The machine room 14 is formed in at least a part of the space on the upper surface of the frame main body 21 excluding the area where the cab 11 is arranged and the area where the base end portion 4A of the boom 4 is mounted. The machine room 14 can be formed, for example, in the rear space, i.e., the space behind the cab 11, or in the side space, i.e., the space on the side (e.g., the right side) of the cab 11, or in both the rear space and the side space.

[0041] As described above, the outer wall 13 is, for example, box-shaped and defines the machine room 14. Openings such as an air intake for introducing air outside the machine room 14 into the interior of the machine room 14 and an air outlet for discharging the air inside the machine room 14 to the outside of the machine room 14 may be formed in the outer wall 13. The air intake and the air outlet may each be formed in the outer wall 13 or in other parts. Specifically, for example, the air intake may be formed in either the right side portion or the left side portion of the outer wall 13, and the air outlet may be formed in the other of the right side portion and the left side portion.

[0042] As described above, the construction machine 100 includes the various devices housed in the machine room 14. The various devices include the battery case 30 and the battery 70. The battery case 30 is a case for housing the battery 70. In the present embodiment, the battery case 30 and the battery 70 are arranged at the rear of the upper swing body 2. However, the positions where the battery case 30 and the battery 70 are arranged may not be the rear of the upper swing body 2, and may be the side portion or the front portion of the upper swing body 2. The detailed structures of the battery case 30 and the battery 70 will be described later.

[0043] In the present embodiment, the various devices include the electric motor 61, the hydraulic pump 62, the control valve 63, the hydraulic motor 64, the work oil tank 65, the battery-related device 66, the heat exchanger 68, and the cooling fan 69.

[0044] The electric motor 61 operates by receiving electric power (electricity) supply from the battery 70. The hydraulic pump 62 is driven by the electric motor 61 to eject the work oil. The control valve 63 is interposed between the hydraulic pump 62 and the plurality of actuators and controls the supply of the work oil to at least one of the plurality of actuators. The work oil tank 65 stores the work oil.

[0045] The hydraulic motor 64 operates by receiving the supply of the work oil from the hydraulic pump 62 through the control valve 63. The control valve 63 opens and closes in such a manner as to supply the work oil from the hydraulic pump 62 to the actuator corresponding to the operation according to the lever operation or the pedal operation applied by the operator to an operation device (not shown).

[0046] The battery-related equipment 66 is equipment related to the battery 70. The battery-related equipment 66 may include, for example, a battery power control device 66A for performing the required control when supplying electricity (electric power) output from the battery 70 to the power supply object, and may also include a battery cooling device 66B for cooling the battery 70, and may also include other equipment related to the battery 70. The battery power control device 66A is a device for managing the high-voltage current from the battery 70. The power supply object may include the electric motor 61, and may also include a controller (not shown) for controlling the operation of the construction machinery 100, and may also include a water pump described later, and may also include other electrical equipment. In the present embodiment, the battery-related equipment 66 includes a battery power control device 66A (high-voltage box) and a battery cooling device 66B (battery cooler).

[0047] The battery power control device 66A may include a converter. The converter may be, for example, a DCDC converter. The DCDC converter may be configured to step down the high voltage output from the battery 70 to a predetermined voltage and output the electricity (power) of the stepped-down voltage. The output electricity (power) may be connected to the output harness 56 (see FIG. Figure 4 ) is supplied to the power supply target, which may be arranged, for example, in front of the battery case 30. The battery power control device 66A may include a converter controller as a controller for controlling the operation of the converter.

[0048] The battery 70 may be, for example, a lithium-ion battery or other types of batteries. The electric motor 61 may be operated by receiving power from the battery 70 via an inverter (not shown). The inverter may convert the direct current supplied from the battery 70 into three-phase alternating current and supply it to the electric motor 61. The inverter adjusts the rotation speed of the electric motor 61. In addition, the battery 70 may be charged by a charging device 50 described later via a charging harness 55 (see FIG. 1 ). Figure 4 , Figure 20 and Figure 21 ) and is charged. The electric motor 61 is composed of, for example, a three-phase motor.

[0049] The battery cooling device 66B is a device related to cooling of the battery 70. The battery cooling device 66B may include, for example, a battery cooling water tank storing battery cooling water for cooling the battery 70. The battery cooling device 66B may include, for example, a battery radiator (battery cooling water radiator) for performing heat exchange between the battery cooling water and the air.

[0050] A battery cooling water pipe is connected to the inlet and outlet of the cooling water in the battery cooling water tank. The battery cooling water pipe guides the battery cooling water from the battery cooling water tank to the arrangement area of the battery 70, guides the battery cooling water after cooling the battery 70 to the battery radiator, and guides the battery cooling water after heat dissipation to the battery cooling water tank. The battery cooling water can be transported by a battery cooling water pump.

[0051] In the present embodiment, the battery cooling water tank and the battery radiator of the battery cooling device 66B are mounted on the construction machine 100 as devices independent of the heat exchanger 68 described below. However, when the heat exchanger 68 also has the functions of the battery cooling water tank and the battery radiator, the battery cooling water tank and the battery radiator can be omitted.

[0052] The heat exchanger 68 may include at least one of an oil cooler and a radiator. The oil cooler may be configured to cool the working oil discharged from the hydraulic device. Specifically, for example, the working oil discharged from the control valve 63 reaches the oil cooler via an oil cooler hose (not shown), is cooled by heat exchange with air in the oil cooler, and then returns to the working oil tank 65 via an oil cooler hose (not shown). Accordingly, the working oil is cooled.

[0053] The radiator may be configured to cool the device to be cooled that generates heat during operation. Specifically, for example, the radiator may be connected to the device to be cooled via a radiator hose. The cooling water stored in the cooling water tank is transported by a water pump, is cooled by the device to be cooled, and then dissipates heat by heat exchange with air in the radiator and returns to the cooling water tank. The device to be cooled may be an electrical device such as the electric motor 61, a hydraulic device such as the hydraulic motor 64, or other devices that need to be cooled.

[0054] The cooling fan 69 forms an air flow, that is, the air outside the machine room 14 flows into the machine room 14 from the air inlet, passes through the heat exchanger 68, and is discharged to the outside of the machine room 14 from the air outlet. Figure 3 In the specific example shown, the cooling fan 69 is arranged at a position adjacent to the battery housing 30. More specifically, the cooling fan 69 is arranged in front of the battery housing 30. The cooling fan 69 forms a direction along the front surface of the front plate 38 of the battery housing 30 ( Figure 3An air flow in the left - right direction (center) is provided. Specifically, the air inlet can be formed, for example, on the outer wall 13 adjacent to the cooling fan 69, and the air outlet can be formed, for example, at a position where air can be discharged to the space between the vertical plates 23, 23 on the left and right. At this time, if the cooling fan 69 operates, the air flowing into the interior of the machinery room 14 through the air inlet can flow along the front surface of the front plate 38 of the battery case 30 and be discharged to the space between the vertical plates 23, 23 on the left and right through the discharge port. The air discharged to the space between the vertical plates 23, 23 can further flow forward and be discharged outside the construction machinery 100. At a position downstream of the heat exchanger 68 in the machinery room 14 in the air flow direction, the air flowing along the front plate 38 of the battery case 30 rises in temperature through heat exchange in the heat exchanger 68.

[0055] Next, various features of the construction machinery 100 according to the present embodiment will be described.

[0056] [First Feature]

[0057] The battery case 30 has a bottom plate 31 and a plurality of vertical plates extending upward from the bottom plate 31. The plurality of vertical plates include a pair of outer vertical plates 32, 33. At least a part of the space between the pair of outer vertical plates 32, 33 can accommodate the battery 70. The plurality of vertical plates further include an intermediate vertical plate 34 extending upward from the bottom plate 31 between the pair of outer vertical plates 32, 33. In the construction machinery 100, since the battery case 30 includes not only the pair of outer vertical plates 32, 33 but also the intermediate vertical plate 34 disposed therebetween, it is easy to ensure the strength (such as rigidity) of the battery case 30.

[0058] In this battery case 30, the bottom plate 31 functions as a beam extending in the lateral direction, and each of the three vertical plates 32, 33, 34 functions as a column extending in the vertical direction. In the space between the outer vertical plate 32 and the outer vertical plate 33, one or more beams (such as a plurality of beam members 41 described later) can also be disposed above the bottom plate 31. The one or more beams can be members for further enhancing the strength of the battery case 30, or can be members for further enhancing the strength of the battery case 30 and supporting the battery cells 71 described later. In the battery case 30 having the first feature, compared with the case where no intermediate vertical plate is disposed between the outer vertical plates 32 and 33, the one or more beams are less likely to undergo flexure, vibration, etc.

[0059] In the present embodiment, the battery case 30 is disposed at the rear of the machinery room 14. The bottom plate 31 can be, for example, Figure 3 a flat plate having a rectangular shape as shown, or can be a member having other shapes. The bottom plate 31 is preferably disposed, for example, Figure 6 in a horizontal posture as shown. In Figure 3In the specific example shown, the length of the bottom plate 31 in the left-right direction is greater than the length of the bottom plate 31 in the front-rear direction.

[0060] A pair of outer vertical plates 32, 33 includes: an outer vertical plate 32 disposed in a posture of standing upright upward from the left end portion of the bottom plate 31; and an outer vertical plate 33 disposed in a posture of standing upright upward from the right end portion of the bottom plate 31. That is, the outer vertical plates 32, 33 are disposed at intervals in the left-right direction. Accordingly, at least a part of the space between the outer vertical plates 32, 33 can be configured with the battery 70. Each of the outer vertical plates 32, 33 can be, for example, a flat plate having a rectangular shape as shown in Figure 8 and Figure 9 or can be a member having other shapes. Each of the outer vertical plates 32, 33 is preferably disposed in a posture parallel to the vertical direction, for example, as shown in Figure 6 In addition, each of the outer vertical plates 32, 33 is preferably disposed in a posture parallel to the front-rear direction and perpendicular to the left-right direction.

[0061] The intermediate vertical plate 34 is disposed in a posture of standing upright upward from the middle portion between the left end portion and the right end portion of the bottom plate 31. The intermediate vertical plate 34 is disposed at a position spaced apart from the left outer vertical plate 32 toward the right and at a position spaced apart from the right outer vertical plate 33 toward the left. The intermediate vertical plate 34 can be, for example, a substantially rectangular flat plate as shown in Figure 8 and Figure 9 or can be a member having other shapes. The intermediate vertical plate 34 is preferably disposed in a posture parallel to the vertical direction, for example, as shown in Figure 6 The intermediate vertical plate 34 is preferably disposed in a posture parallel to the front-rear direction and perpendicular to the left-right direction.

[0062] In the present embodiment, the space between the pair of outer vertical plates 32, 33 is divided into two spaces by the intermediate vertical plate 34. Therefore, a plurality of battery units 71 described later can be separately disposed in each space.

[0063] [Second Feature]

[0064] In the construction machinery 100, the battery housing 30 has an upper plate 36 for covering the battery 70 from above. In the construction machinery 100, the battery 70 disposed in the space between the pair of outer vertical plates 32, 33 can be protected by the upper plate 36.

[0065] The upper plate 36 can also be configured to cover the space between two adjacent vertical plates among the plurality of vertical plates from above. The two vertical plates can be the outer vertical plates 32 and the middle vertical plate 34. In addition, the two vertical plates can also be the outer vertical plates 33 and the middle vertical plate 34. When the plurality of vertical plates further includes the middle vertical plate 35 described later, the two vertical plates can be the outer vertical plates 33 and the middle vertical plate 35, or the outer vertical plates 32 and the middle vertical plate 35, or the middle vertical plate 34 and the middle vertical plate 35. The upper plate 36 can be formed of a single member, or can be formed of a plurality of members as in the specific example shown in Figure 8 as shown.

[0066] [Third feature]

[0067] In the construction machinery 100, the plurality of vertical plates further includes a middle vertical plate 35 that extends upward from the bottom plate 31 between a pair of outer vertical plates 32 and 33. In this construction machinery 100, the battery housing 30 includes not only the middle vertical plate 34 but also the middle vertical plate 35 between the pair of outer vertical plates 32 and 33, so it is easier to ensure the strength of the battery housing 30. One of the middle vertical plate 34 and the middle vertical plate 35 is an example of a first middle vertical plate, and the other of the middle vertical plate 34 and the middle vertical plate 35 is an example of a second middle vertical plate.

[0068] In this battery housing 30, the four vertical plates 32, 33, 34, and 35 each function as columns extending in the vertical direction. Therefore, compared with the case where only the middle vertical plate 34 is arranged between the outer vertical plate 32 and the outer vertical plate 33, it is more difficult for the one or more beams to flex, vibrate, etc.

[0069] The middle vertical plate 35 is configured in a posture of standing upright upward from the middle part between the left end and the right end of the bottom plate 31. The middle vertical plate 35 is arranged at a position spaced apart from the left outer vertical plate 32 to the right and at a position spaced apart from the right outer vertical plate 33 to the left. The middle vertical plate 35 is arranged between the middle vertical plate 34 and the outer vertical plate 33. Specifically, the middle vertical plate 35 is arranged at a position spaced apart from the middle vertical plate 34 to the right and at a position spaced apart from the outer vertical plate 33 to the left. The middle vertical plate 35 can be, for example, a flat plate having a substantially rectangular shape as shown in Figure 8 and Figure 9 shown, or can be a member of other shapes. The middle vertical plate 35 is preferably arranged in a posture parallel to the vertical direction, for example, as shown in Figure 6 shown. The middle vertical plate 35 is preferably arranged in a posture parallel to the front-rear direction and perpendicular to the left-right direction.

[0070] In the present embodiment, the space between a pair of outer vertical plates 32 and 33 is divided into three spaces by the intermediate vertical plate 34 and the intermediate vertical plate 35. Therefore, a plurality of battery cells 71 described later can be separately arranged in each space.

[0071] [Fourth feature]

[0072] In the construction machine 100, the intermediate vertical plate 34 has a longitudinal plate main body portion and a mounting portion 34a that can be detachably attached to a lifting member 200 for lifting the battery case 30. The longitudinal plate main body portion has, for example, a rectangular shape, and the mounting portion 34a extends upward from the upper end of the longitudinal plate main body portion. The intermediate vertical plate 35 has a longitudinal plate main body portion and a mounting portion 35a that can be detachably attached to a lifting member 200 for lifting the battery case 30. The longitudinal plate main body portion has, for example, a rectangular shape, and the mounting portion 35a extends upward from the upper end of the longitudinal plate main body portion. In the construction machine 100, for example, when assembling or disassembling the construction machine 100, by separately attaching the lifting member 200 to the mounting portion 34a of the intermediate vertical plate 34 and the mounting portion 35a of the intermediate vertical plate 35, the battery case 30 can be moved relatively stably.

[0073] The lifting member 200 can be, for example, Figure 7 the hook shown in, or other members. The lifting member 200 is connected to the wire rope of the crane. The mounting portion 34a can include a through hole formed in the intermediate vertical plate 34, and the mounting portion 35a can include a through hole formed in the intermediate vertical plate 35. The hook is inserted through the through hole.

[0074] The intermediate vertical plate 34 and the intermediate vertical plate 35 are preferably arranged at positions where it is easy to keep the battery case 30 balanced when lifting the battery case 30. In Figure 6 the specific example shown, the intermediate vertical plate 34 and the intermediate vertical plate 35 are attached to the bottom plate 31 such that the distance from the center in the left-right direction of the bottom plate 31 to the intermediate vertical plate 34 is substantially the same as the distance from the center in the left-right direction of the bottom plate 31 to the intermediate vertical plate 35.

[0075] [Fifth feature]

[0076] In the construction machinery 100, the battery case 30 has a first upper plate 36A that covers the space between the intermediate vertical plate 34 and the intermediate vertical plate 35 from above. The intermediate vertical plate 34 and the intermediate vertical plate 35 respectively have mounting portions 34a and 35a for detachably mounting a lifting member 200 for lifting the battery case 30. The mounting portion 34a of the intermediate vertical plate 34 and the mounting portion 35a of the intermediate vertical plate 35 are located above the first upper plate 36A. In this construction machinery 100, for example, when assembling or disassembling the construction machinery 100, it is easy to mount the lifting member 200 on the mounting portion 34a of the intermediate vertical plate 34 and the mounting portion 35a of the intermediate vertical plate 35.

[0077] In Figure 9 In the specific example shown, the mounting portion 34a of the intermediate vertical plate 34 is formed at the upper end of the intermediate vertical plate 34, and the mounting portion 35a of the intermediate vertical plate 35 is formed at the upper end of the intermediate vertical plate 35. The width (length in the front-rear direction) of the upper end of the intermediate vertical plate 34 is smaller than the width (length in the front-rear direction) of the vertical plate main body of the intermediate vertical plate 34. Specifically, the upper end of the intermediate vertical plate 34 is formed in a tapered shape such that the width (length in the front-rear direction) becomes smaller as it goes upward. Similarly, the width (length in the front-rear direction) of the upper end of the intermediate vertical plate 35 is smaller than the width (length in the front-rear direction) of the vertical plate main body of the intermediate vertical plate 35. Specifically, the upper end of the intermediate vertical plate 35 is formed in a tapered shape such that the width (length in the front-rear direction) becomes smaller as it goes upward.

[0078] As Figure 8 shown, the first upper plate 36A has an opening 361 at a position corresponding to the mounting portion 34a of the intermediate vertical plate 34 and an opening 361 at a position corresponding to the mounting portion 35a of the intermediate vertical plate 35. The mounting portion 34a of the intermediate vertical plate 34 is inserted through the opening 361 and protrudes upward from the first upper plate 36A. Similarly, the mounting portion 35a of the intermediate vertical plate 35 is inserted through the opening 361 and protrudes upward from the first upper plate 36A. Since the mounting portion 34a and the mounting portion 35a protrude upward from the first upper plate 36A, the lifting member 200 can be respectively mounted on the mounting portion 34a and the mounting portion 35a without disassembling the first upper plate 36A.

[0079] [Sixth feature]

[0080] The construction machine 100 is provided with battery-related equipment 66 related to a battery 70. The battery case 30 has: a first upper plate 36A that covers the space between the intermediate vertical plate 34 and the intermediate vertical plate 35 from above; and a second upper plate 36B that covers the space between the outer vertical plate 32 and the intermediate vertical plate 34 from above. The first upper plate 36A and the second upper plate 36B are arranged in such a way that their heights are different from each other. The battery-related equipment 66 is arranged above the one with the lower height among the first upper plate 36A and the second upper plate 36B. In this construction machine 100, the battery-related equipment 66 can be arranged near the battery 70 while effectively utilizing the space.

[0081] In the present embodiment, the upper plate 36 includes the first upper plate 36A and the second upper plate 36B. In Figures 7 to 9 the specific example shown, the first upper plate 36A has a size capable of covering the space between the intermediate vertical plate 34 and the intermediate vertical plate 35 from above and covering the space between the outer vertical plate 32 and the intermediate vertical plate 34 from above.

[0082] In Figure 7 and Figure 8 the specific example shown, the height of the outer vertical plate 33 is lower than the heights of the outer vertical plate 32, the intermediate vertical plate 34, and the intermediate vertical plate 35. The first upper plate 36A is arranged at a height substantially corresponding to the heights of the outer vertical plate 32, the intermediate vertical plate 34, and the intermediate vertical plate 35, and the second upper plate 36B is arranged at a height substantially corresponding to the height of the outer vertical plate 33. Accordingly, the first upper plate 36A is located at a position higher than the second upper plate 36B. The first upper plate 36A is supported by the upper parts of at least two of the outer vertical plate 32, the intermediate vertical plate 34, and the intermediate vertical plate 35. The second upper plate 36B is supported by the upper part of the outer vertical plate 33 and the middle part in the height direction (for example, the side surface of the intermediate vertical plate 35) of the intermediate vertical plate 35.

[0083] As Figure 8 shown, the battery-related equipment 66 is arranged in the space SP, and the left side and the lower side of the space SP are locally defined by the upper surface of the second upper plate 36B and the side surface (right side surface) of the upper part of the intermediate vertical plate 35 adjacent thereto.

[0084] In Figures 3 to 6In the specific example shown, the battery-related device 66 includes a battery power control device 66A and a battery cooling device 66B. The battery power control device 66A is disposed above the second upper plate 36B, and the battery cooling device 66B is disposed above the battery power control device 66A. The battery power control device 66A includes, for example, a converter, and the battery cooling device 66B includes, for example, a battery cooling water tank. Preferably, the battery cooling water tank of the battery cooling device 66B is disposed above the battery power control device 66A in the space SP, and the battery cooling water pipes are disposed at a height below the inlet and outlet of the cooling water in the battery cooling water tank. Accordingly, air is difficult to mix into the battery cooling water pipes. In addition, the inlet and the outlet of the battery cooling water tank are preferably disposed at a position higher than the battery 70.

[0085] In the present embodiment, the battery 70 includes a plurality of battery cells 71, and the plurality of battery cells 71 are arranged vertically and horizontally in the battery case 30. The battery case 30 has a plurality of columns arranged in the horizontal direction, and in each column of the plurality of columns, the plurality of battery cells 71 are supported in a vertically arranged manner.

[0086] [Seventh feature]

[0087] The construction machine 100 includes a machine body frame 20 disposed at a position spaced downward from the bottom plate 31 of the battery case 30. The battery 70 includes a plurality of battery cells 71, and at least a part of the plurality of battery cells 71 can be disposed in at least a part of the space between a pair of outer vertical plates 32 and 33. The battery case 30 has at least one battery support device 37 disposed between the bottom plate 31 and the machine body frame 20, and the at least one battery support device 37 can support the other part of the plurality of battery cells 71. In the construction machine 100, not only is at least a part of the plurality of battery cells 71 disposed in the space between the pair of outer vertical plates 32 and 33, but also the at least one battery support device 37 can support the other part of the battery cells 71. Accordingly, more battery cells 71 can be disposed in a limited space.

[0088] In Figures 6 to 9 the specific example shown, the battery case 30 has a plurality of battery support devices 37. As Figure 6 shown, the plurality of battery support devices 37 include a first battery support device 37 and a second battery support device 37. The first battery support device 37 is disposed in the lower space between the bottom plate 31 and the machine body frame 20 in a space more to the left than the vertical body 22 (specifically, the left vertical plate 23). The second battery support device 37 is disposed in the lower space in a space more to the right than the vertical body 22 (specifically, the right vertical plate 28).

[0089] In Figure 6 and Figure 7In the specific example shown, the battery 70 includes 12 battery cells 71. Among them, 10 battery cells 71 are arranged in the space between the outer vertical plates 32 and 33, 1 battery cell 71 is supported by the first battery support device 37, and 1 battery cell 71 is supported by the second battery support device 37. More specifically, 4 battery cells 71 are arranged in the space between the outer vertical plate 32 and the middle vertical plate 34, 4 battery cells 71 are arranged in the space between the middle vertical plate 34 and the middle vertical plate 35, and 2 battery cells 71 are arranged in the space between the middle vertical plate 35 and the outer vertical plate 33. However, the total number of battery cells 71 and the specific arrangement of the battery cells 71 are not limited to Figure 6 and Figure 7 the specific example shown.

[0090] [Eighth feature]

[0091] In the construction machinery 100, the battery support device 37 is detachably mounted on the bottom plate 31. In this construction machinery 100, the maintenance operation of the battery cell 71 supported by the battery support device 37 becomes easy.

[0092] As Figure 18 shown, the frame main body 21 of the body frame 20 has an opening 211 that penetrates the frame main body 21 vertically at positions corresponding to the first battery support device 37 and the second battery support device 37. The body frame 20 has two bottom covers 15 for closing the two openings 211 of the frame main body 21. The two bottom covers 15 cover the first battery support device 37 and the second battery support device 37 from below, and are mounted on the frame main body 21 in a manner that allows for detaching and attaching to the frame main body 21.

[0093] As Figure 8 and Figure 9 shown, each of the first battery support device 37 and the second battery support device 37 includes a lower support portion 370 that supports the battery cell 71 from below and a plurality of connecting portions that extend upward from the lower support portion 370. The plurality of connecting portions may include, for example: a front connecting portion 371 that extends upward from the front end of the lower support portion 370; a rear connecting portion 372 that extends upward from the rear end of the lower support portion 370; and a side connecting portion 373 that extends upward from the side end of the lower support portion 370.

[0094] The bottom plate 31 of the battery case 30 has: a plurality of connected portions 311, 312, 313 corresponding to the plurality of connecting portions 371, 372, 373 of the first battery support device 37; and a plurality of connected portions 311, 312, 313 corresponding to the plurality of connecting portions 371, 372, 373 of the second battery support device 37.

[0095] The first battery support device 37 and the second battery support device 37 each include a plurality of fixing members 374 for detachably fixing a plurality of connecting portions 371, 372, 373 to the bottom plate 31. The plurality of fixing members 374 can be, for example, a plurality of bolts, or a combination of a plurality of bolts and a plurality of nuts, or other various members. When the plurality of fixing members 374 include a plurality of bolts, each of the plurality of connecting portions 371, 372, 373 has a bolt insertion hole for inserting one or more bolts corresponding to its connecting portion. The bolt insertion holes can be formed, for example, in the upper portions of the plurality of connecting portions 371, 372, 373.

[0096] As Figure 6 , Figure 7 and Figure 17 shown, the first battery support device 37 and the second battery support device 37 are each connected to a plurality of connected portions 311, 312, 313 by a plurality of connecting portions 371, 372, 373 using a plurality of fixing members 374, and thus are fixed to the bottom plate 31. Each connecting portion 371 of the first battery support device 37 and the second battery support device 37 has an opening for inserting a wire harness (not shown) extending from the battery unit 71, and this opening is formed in the lower portion of the connecting portion 371. The range in which the plurality of fixing members 374 for connecting the connecting portion 371 to the connected portion 311 are arranged ( Figure 7 the range in the left - right direction shown) is larger than the range in which the plurality of fixing members 374 for connecting the connecting portion 372 to the connected portion 312 are arranged ( Figure 8 the range in the left - right direction shown).

[0097] A maintenance method for the first battery support device 37 and the second battery support device 37 will be described.

[0098] In the maintenance operation for the first battery support device 37 and the second battery support device 37, an operator detaches two bottom covers 15 from the frame main body 21 as Figure 18 shown. As Figure 17 shown, the connecting portion 373 and the frame main body 21 are arranged at a distance from each other, thus ensuring a space therebetween. Similarly, the connecting portion 372 and the frame main body 21 behind it are arranged at a distance from each other, thus ensuring a space therebetween. As Figure 18As shown, a space is ensured in front of the connection portions 371 of the first battery support device 37 and the second battery support device 37, and a wire harness extending from the battery unit 71 is inserted through this space. An operator can visually confirm the connection portions 371, 372, 373 through the space ensured in front of the connection portion 371 of each battery support device 37, the space ensured behind the connection portion 372 of each battery support device 37, and the space ensured on the side of the connection portion 373 of each battery support device 37 by removing the bottom cover 15 and observing the battery support device 37 from below. Also, the wire harness extending from the battery unit 71 can be visually confirmed, and the connection portions 371, 372, 373 can be accessed through these spaces, and the wire harness extending from the battery unit 71 can be accessed through these spaces. The operator confirms the connection status of the connection portions 371, 372, 373 and the connection state of the wire harness, and makes adjustments as needed, thereby performing maintenance work on them.

[0099] In the maintenance work, when it is necessary to remove the first battery support device 37 and the second battery support device 37 from the bottom plate 31 of the battery case 30, the operator removes the wire harness extending from the battery unit 71 from the battery unit 71. Further, the operator disposes a support member (not shown) below the lower support portion 370 of the battery support device 37 in such a manner that the lower support portion 370 of the battery support device 37 is placed on the support member. Then, the operator removes a plurality of fixing members 374. Thereby, the first battery support device 37 and the second battery support device 37 are removed from the bottom plate 31. The first battery support device 37 and the second battery support device 37 are removed by descending through the opening of the frame body 21 downward as indicated by the downward arrow in Figure 19 The operator can lower the first battery support device 37 and the second battery support device 37 to a position lower than the frame body 21 by lowering the support member. The operator can perform maintenance on the removed first battery support device 37 and second battery support device 37. If the maintenance is completed, the operator installs the first battery support device 37 and the second battery support device 37 on the bottom plate 31 of the battery case 30, installs the wire harness on the battery unit 71, and installs the two bottom covers 15 on the frame body 21 in the reverse order of the above-described removal operation. In addition, the construction machinery 100 may be configured such that, in the maintenance work, the side wall 13B and the rear wall 13C of the outer wall 13 located on the side and rear of the battery case 30 are removed from the body frame 20, so that the operator can access the plurality of fixing members 374 from the side and rear.

[0100] [Ninth Feature]

[0101] In the construction machinery 100, the battery 70 includes a plurality of battery cells 71, the battery housing 30 has a plurality of support portions 40 that are supported by two adjacent vertical plates among the plurality of vertical plates and are arranged at intervals in the vertical direction, and each of the plurality of support portions 40 supports at least one of the plurality of battery cells 71. In this construction machinery 100, the plurality of support portions 40 can support the battery cells 71 arranged vertically, and can also strengthen the battery housing 30.

[0102] As Figure 9 shown, the plurality of support portions 40 include: a plurality of left support portions 40 supported by these vertical plates between the outer vertical plate 32 and the middle vertical plate 34; a plurality of central support portions 40 supported by these vertical plates between the middle vertical plate 34 and the middle vertical plate 35; and a plurality of right support portions 40 supported by these vertical plates between the outer vertical plate 33 and the middle vertical plate 35. The plurality of left support portions 40 are arranged at intervals in the vertical direction, the plurality of central support portions 40 are arranged at intervals in the vertical direction, and the plurality of right support portions 40 are arranged at intervals in the vertical direction.

[0103] In Figure 7 and Figure 9 the specific example shown, each of the plurality of support portions 40 supports one battery cell 71. Each support portion 40 can be, for example, a flat member supported by the two vertical plates, or can be a structure including a plurality of members as described below.

[0104] [Tenth feature]

[0105] In the construction machinery 100, each of the plurality of support portions 40 includes a plurality of beam members 41 that are supported by the two vertical plates and are arranged at intervals in the horizontal direction. In this construction machinery 100, the plurality of beam members 41 supported by the two vertical plates contribute to stably supporting the battery cell 71, and contribute to strengthening the battery housing 30. In addition, the plurality of beam members 41 also contribute to integrating various members constituting the battery housing 30.

[0106] In Figure 8 and Figure 9 the specific example shown, each support portion 40 includes two beam members 41. One of the beam members 41 is a member (front side beam member 41) supported by these vertical plates at the front of the two vertical plates and extending in the left-right direction. The other beam member 41 is a member (rear side beam member 41) supported by these vertical plates at the rear of the two vertical plates and extending in the left-right direction. One end portion and the other end portion of each beam member 41 can be fixed to the corresponding vertical plate by bolts, nuts, etc.

[0107] As Figure 13 shown, the beam member 41 has an elongated shape extending in one direction. In other words, as Figure 14As shown, the beam member 41 has an L-shaped cross section. Accordingly, the strength (bending rigidity and torsional rigidity) of the beam member 41 is increased. The beam member 41 includes: a beam upper part 41A extending in the left-right direction; and a hanging part 41B connected to the edge of the beam upper part 41A, extending in the left-right direction, and hanging downward from the edge.

[0108] As Figure 7 and Figure 11 shown, the battery unit 71 has a safety valve 72. The safety valve 72 is formed, for example, on the surface 71S (e.g., the front surface) of the battery unit 71. As Figure 14 shown, the hanging part 41B of the beam member 41 is located in front of the safety valve 72 and covers at least a part of the safety valve 72 from the front. Thus, the safety valve 72 is protected.

[0109] [Eleventh Feature]

[0110] In the construction machinery 100, each of the plurality of support parts 40 includes: a plurality of mounts 42 for reducing vibration; and a support plate 43 supported by the plurality of mounts 42, and each of the plurality of battery units 71 is disposed on the support plate 43. In the construction machinery 100, each of the plurality of support parts 40 can reduce the vibration transmitted to the battery 70 and stably support the battery unit 71 on the support plate 43.

[0111] As Figure 11 and Figure 12 shown, each support part 40 includes 4 mounts 42. Of the 4 mounts 42, the 2 mounts 42 disposed on the front side are respectively mounted on the left end and the right end of the front side beam member 41, and the 2 mounts 42 disposed on the rear side are respectively mounted on the left end and the right end of the rear side beam member 41.

[0112] Each support plate 43 is, for example, in a substantially rectangular shape as Figure 15 shown. The four corners of each support plate 43 are fixed to the 4 mounts 42.

[0113] [Twelfth Feature]

[0114] In the construction machinery 100, as Figure 11 and Figure 15 shown, the support plate 43 includes a pair of support members 44 extending in one direction and three connecting members 45, 46, 47 connecting the pair of support members 44, and each of the three connecting members 45, 46, 47 includes a bent plate formed by bending a single plate. The support plate 43 has a structure in which the plurality of connecting members 45, 46, 47 are respectively connected to the pair of support members 44. Since each of the plurality of connecting members 45, 46, 47 includes a bent plate, it is possible to suppress an increase in the weight of the support plate 43 while ensuring the strength of the support plate 43.

[0115] In Figure 15 In the specific example shown, a pair of support members 44 of each support plate 43 are arranged at intervals in the horizontal direction (for example, the left - right direction). Each support plate 43 includes a flat plate member 48. The flat plate member 48 is arranged in a posture parallel to the horizontal direction and is fixed to the pair of support members 44 and / or the three connecting members 45, 46, 47 by fixing methods such as welding.

[0116] In Figure 16 In the specific example shown, the bent plate of the central connecting member 46 among the three connecting members 45, 46, 47 has: a plate - shaped upper part arranged at an interval above the upper surface of the flat plate member 48; a side part extending from one end of the upper part to the upper surface of the flat plate member 48; and another side part extending from the other end of the upper part to the upper surface of the flat plate member 48. Each of the side part and the other side part can be fixed to the upper surface of the flat plate member 48 and the side surface of the support member 44 by fixing methods such as welding. The bent plate of the central connecting member 46 and the flat plate member 48 form a closed cross - section.

[0117] The connecting member 45 and the central connecting member 46 are arranged at intervals in one horizontal direction (for example, the front direction), and the connecting member 47 and the central connecting member 46 are arranged at intervals in the direction opposite to the one direction (for example, the rear direction). The bent plates of the connecting member 45 and the connecting member 47 each have: a plate - shaped upper part arranged at an interval above the upper surface of the flat plate member 48; and a side part extending from one end of the upper part to the upper surface of the flat plate member 48. The side part can be fixed to the upper surface of the flat plate member 48 by fixing methods such as welding.

[0118] In addition, Figure 15 The support plate 43 shown is used to support each of the plurality of battery cells 71 arranged above the bottom plate 31. However, Figure 15 The support plate 43 shown can also be used to support each of the two battery cells 71 arranged below the bottom plate 31.

[0119] [Thirteenth feature]

[0120] In the construction machinery 100, as Figure 4 and Figure 10 shown, the battery housing 30 has a front plate 38 (shielding plate) that covers the battery 70 from the front. In this construction machinery 100, the front part of the battery 70 can be protected by the front plate 38.

[0121] In addition, as Figure 6 and Figure 10As shown, the battery housing 30 also has a rear plate 39 (shielding plate) for covering the battery 70 from the rear. In this construction machine 100, the rear part of the battery 70 can be protected. The rear plate 39 can have a size capable of covering, for example, the range R indicated by the double-dashed line in Figure 6 The range R indicated by the double-dashed line is a range capable of blocking the rear opening formed by the rear edge of the bottom plate 31, the rear edges of the outer vertical plates 32 and 33, and the rear edge of the upper plate 36.

[0122] In the present embodiment, the front plate 38 can suppress the entry of relatively hot air flowing along the front plate 38 as Figure 3 shown into the battery housing 30. Thereby, contact between the hot air and the battery 70 can be suppressed.

[0123] In the present embodiment, in the battery housing 30, the bottom plate 31, a pair of outer vertical plates 32 and 33, the upper plate 36, the front plate 38, and the rear plate 39 can cover the space between the pair of outer vertical plates 32 and 33 from below, left, right, above, front, and rear. That is, the upper and lower, left and right, and front and rear of the battery unit 71 disposed above the bottom plate 31 are surrounded and protected by the bottom plate 31, a pair of outer vertical plates 32 and 33, the upper plate 36, the front plate 38, and the rear plate 39. Therefore, the battery unit 71 is protected from external impacts acting on the machine room 14. At the same time, a dustproof effect can be obtained. In addition, the space surrounded by the bottom plate 31, a pair of outer vertical plates 32 and 33, the upper plate 36, the front plate 38, and the rear plate 39 is more preferably sealed by these plates. At this time, a waterproof effect can be obtained. By the battery housing 30 having a dustproof effect and / or a waterproof effect, a reduction in the durability years of a not-shown high-voltage wire harness connected to the battery 70 can be suppressed.

[0124] In addition, in order to prevent water and the like from entering the machine room 14 through the gap between the bottom cover 15 and the frame body 21, a sealing member is disposed at the peripheral portion of the bottom cover 15. Thereby, the battery units 71 supported by the first battery support device 37 and the second battery support device 37, that is, the two battery units 71 disposed between the frame body 21 of the body frame 20 and the bottom plate 31 of the battery housing 30, are protected.

[0125] [Fourteenth feature]

[0126] The construction machine 100 includes a hood 13A that covers the battery housing 30 from above, and the hood 13A has an opening / closing door 131 for performing maintenance of the battery 70. The opening / closing door 131 is located above the upper plate 36 of the battery housing 30. In this construction machine 100, maintenance of the battery 70 can be performed by opening the opening / closing door 131 of the hood 13A, and the battery 70 can be protected by closing the opening / closing door 131 of the hood 13A when the construction machine 100 is in operation.

[0127] In Figure 2 In the specific example shown, the opening / closing door 131 of the hood 13A is supported by the hood main body in such a manner that the edge of the opening / closing door 131 can rotate up and down with respect to the hood main body.

[0128] [Fifteenth feature]

[0129] The construction machinery 100 is provided with a work platform 132 (footrest) that is disposed in front of the hood 13A and can be attached and detached. In this construction machinery 100, an operator stands on the work platform 132 disposed in front of the hood 13A and opens the opening / closing door 131 of the hood 13A, and can perform maintenance of the battery 70, maintenance of battery-related equipment 66, etc., and can detach the work platform 132 when performing work for attaching and detaching the front plate 38. Maintenance of the battery-related equipment 66 includes, for example, a cooling water replenishment operation of replenishing battery cooling water to the battery cooling water tank of the battery cooling device 66B. This cooling water replenishment operation is performed at a relatively high frequency (e.g., daily). By performing a simple operation of opening and closing the opening / closing door 131 of the hood 13A, the operator can access the battery cooling water tank of the battery cooling device 66B. On the other hand, battery maintenance of the battery 70, a high-voltage harness (not shown) connected to the battery 70, etc. is performed at a frequency of about once every few months. When performing this battery maintenance, the work platform 132 is detached, and further the front plate 38 is detached.

[0130] In Figure 2 In the specific example shown, the work platform 132 is supported by, for example, the working fuel tank 65 and its surrounding members. In addition, one or more steps 134 are formed on the outer wall 13 so that it is easy for the operator to get onto the upper surface of the outer wall 13. A fence 133 is disposed along the edge of the step 134, and this fence 133 is disposed along the upper surface edge of the outer wall 13 between the step 134 and the work platform 132.

[0131] [Sixteenth feature]

[0132] The construction machinery 100 is provided with a hood 13A that covers the battery case 30. The hood 13A has an opening / closing door 131 for performing maintenance of the battery 70. The battery case 30 has a front plate 38 that covers the battery 70 from the front. The front plate 38 is divided into a size that can be detached from the opening formed by opening the opening / closing door 131. In this construction machinery 100, the front plate 38 can have a function of protecting the battery 70 and a function of improving the workability when maintaining the battery 70 in a limited space.

[0133] A specific example of the attaching and detaching operation of the front plate 38 will be described. In the present embodiment, by detaching the work platform 132, for example Figure 4As shown, the front plate 38 is exposed, so that the operation of mounting the front plate 38 to the housing body of the battery housing 30 and the disassembly operation can be performed. The housing body is a part including a bottom plate 31 and a pair of outer vertical plates 32, 33.

[0134] In Figure 4 In the specific example shown, the front plate 38 includes a plurality of front plate portions (specifically, six front plate portions 38A to 38F), and these front plate portions 38A to 38F are plates formed of independent members. Each front plate portion is individually fastened to a plurality of bolt insertion holes formed in the bent portions a2 of the main plates 301 of the outer vertical plate 32, the outer vertical plate 33, the intermediate vertical plate 34, and the intermediate vertical plate 35 (see Figure 10 ) by bolts, and thus is mounted to the battery housing 30. The width of each front plate portion is smaller than the opening formed by opening the opening / closing door 131 of the hood 13A. Therefore, the plurality of front plate portions 38A to 38F can be detached from the opening formed by opening the opening / closing door 131 of the hood 13A in the state where the bolts are detached, as shown in Figure 4 .

[0135] The operator first detaches the bolts of the front plate portion 38C, and then slides the front plate portion 38C upward as indicated by the arrow in Figure 4 to detach it from the housing body. Thereafter, for example, the operator can also detach the bolts of the front plate portion 38D and slide the front plate portion 38D upward to detach it from the housing body. Thereafter, for example, the operator can also detach the bolts of the front plate portion 38A, slide the front plate portion 38A to the left, and then slide it upward to detach it from the housing body. For the remaining front plate portions 38B, 38E, 38F, the operator can also detach the bolts of each front plate portion and detach it from the housing body by combining the horizontal sliding and upward sliding of each front plate portion. The operation of mounting the six front plate portions 38A to 38F to the housing body can be performed in the reverse steps of the above steps.

[0136] [Seventeenth feature]

[0137] Figure 20 is a perspective view of the region surrounded by the dotted line in Figure 4 viewed from the right front obliquely, Figure 21 is a perspective view of the region surrounded by the dotted line in Figure 4 viewed from the left front obliquely. Figure 22 and Figure 23They are respectively perspective views showing the charging device 50. The construction machinery 100 includes a body frame 20 that supports the battery case 30, an outer wall 13 that covers the battery case 30, and a charging device 50. The charging device 50 includes: a base member 51 fixed to at least one of the body frame 20 and the outer wall 13; a charging port mounting member 52 fixed to the base member 51; and at least one charging port 53 supported by the charging port mounting member 52. In this construction machinery 100, the base member 51 and the charging port mounting member 52 in the charging device 50 are formed of independent members. Therefore, in the limited space on the body frame 20 and near the outer wall 13 that covers the battery case 30, it is easy to balance the work ease of fixing the charging device 50 to at least one of the body frame 20 and the outer wall 13 and the work ease of maintenance operations such as charging.

[0138] In the present embodiment, at least one charging port 53 includes two charging ports 53, namely a fast charging port and a normal charging port, and the two charging ports 53 are mounted on one charging port mounting member 52.

[0139] In Figure 20 and Figure 21 In the specific example shown, the side wall 13B of the outer wall 13 has an openable and closable cover 135 for the charging port. When the cover 135 is in the open state, the charging terminals of a charging device (not shown) are connected to the charging port 53 of the charging device 50, whereby a plurality of battery cells 71 of the battery 70 are charged. If the charging operation is completed, the charging terminals of the charging device are detached from the charging port 53 and the cover 135 is closed.

[0140] In Figure 22 and Figure 23 In the specific example shown, the charging device 50 further includes a rib 54 and a gasket 57. The rib 54 is a reinforcing member that is mounted to the base member 51 and the gasket 57 at a right angle to the base member 51 and the gasket 57 by welding. The gasket 57 is a T-shaped reinforcing member having a lower portion disposed on the base member 51 and an upper portion extending upward from the center in the width direction of the lower portion. The lower portion of the gasket 57 is fixed to the charging port mounting member 52 by bolts on the left and right sides of the rib 54, and the upper portion of the gasket 57 is fixed to the charging port mounting member 52 by bolts on the upper side of the rib 54. The portion including the charging terminals of the charging device and the charging harness connected to the charging terminals is relatively heavy, and the charging operation is performed frequently. The charging device 50 in the present embodiment has a structure capable of withstanding the weight of the portion of the charging device.

[0141] The steps of the installation operation for installing the charging device 50 on the body frame 20 will be briefly described. First, the operator installs two charging ports 53 on the charging port mounting member 52, installs the charging port mounting member 52 on the base member 51 using fixing members such as bolts, and then installs the base member 51 on the frame body 21 of the body frame 20 using fixing members such as bolts. The assembly of such an installation operation is excellent.

[0142] [Other features]

[0143] The construction machinery 100 according to this embodiment may also have the following features.

[0144] [The eighteenth feature]

[0145] The strength of each of the intermediate vertical plates 34 and 35 is greater than the strength of each of the outer vertical plates 32 and 33. Specifically, as described below.

[0146] As Figure 9 and Figure 10 shown, each of the intermediate vertical plates 34 and 35 includes a main plate 301, a first reinforcing plate 302, and a second reinforcing plate 303. On the other hand, each of the outer vertical plates 32 and 33 includes a main plate 301 and a first reinforcing plate 302, and does not include a second reinforcing plate 303.

[0147] The bottom plate 31 of the battery case 30 includes a bottom plate main body 31A and a plurality of base plates 31B. The bottom plate main body 31A is a member that constitutes most of the bottom plate 31 and can be formed, for example, by a rectangular flat plate.

[0148] The plurality of base plates 31B include: an outer base plate 31B between the lower end of the outer vertical plate 32 and the bottom plate main body 31A; an outer base plate 31B between the lower end of the outer vertical plate 33 and the bottom plate main body 31A; an intermediate base plate 31B between the lower end of the intermediate vertical plate 34 and the bottom plate main body 31A; and an intermediate base plate 31B between the lower end of the intermediate vertical plate 35 and the bottom plate main body 31A. Each of the plurality of base plates 31B can be formed, for example, by a flat plate. In Figure 10 the specific example shown, the plurality of base plates 31B are respectively fixed to the bottom plate main body 31A using fixing members such as bolts, but can also be fixed to the bottom plate main body 31A, for example, by welding. The plurality of base plates 31B are respectively arranged on the bottom plate main body 31A at positions corresponding to the outer vertical plate 32, the outer vertical plate 33, the intermediate vertical plate 34, and the intermediate vertical plate 35.

[0149] The main boards 301 of the outer vertical plates 32, outer vertical plates 33, middle vertical plates 34, and middle vertical plates 35 are each mounted on the base plate main body 31A of the base plate 31 through the base plates 31B corresponding to their main boards 301. Specifically, for example, the lower end portions of the respective main boards 301 may be welded to the base plates 31B. However, the lower end portions of the respective main boards 301 may also be mounted on the base plates 31B by fixing methods other than welding.

[0150] At least one of the plurality of main boards 301 may support the plurality of support portions 40. In Figure 8 and Figure 9 In the specific example shown, one end portions of several beam members 41 are fixed to the respective side surfaces of the plurality of main boards 301 by, for example, welding, bolts, etc.

[0151] As Figure 9 and Figure 10 shown, each of the plurality of main boards 301 may have a shape including a flat plate-like portion a1 that occupies most of its area, a bent portion a2 bent at one end of the flat plate-like portion a1, and a bent portion a3 bent in a direction opposite to the bent portion a2 at the other end of the flat plate-like portion a1 ( Figure 10 a substantially Z-shaped when viewed from above as shown). The flat plate-like portion a1 is, for example, rectangular in shape. The substantially Z-shaped helps to improve the strength (bending rigidity and torsional rigidity) of the main board 301. In Figure 10 In the specific example shown, the bent portion a2 is a portion bent leftward from the front end of the flat plate-like portion a1, and the bent portion a3 is a portion bent rightward from the rear end of the flat plate-like portion a1. However, the shape of each of the plurality of main boards 301 is not limited to Figure 9 and Figure 10 the shape shown, and may be other shapes.

[0152] In each of the middle vertical plates 34 and middle vertical plates 35, the first reinforcing plate 302 is fixed to one side surface of the main board 301, and the second reinforcing plate 303 is fixed to the other side surface of the main board 301. In Figure 10 In the specific example shown, in the middle vertical plate 34, the first reinforcing plate 302 is fixed to the left side surface of the main board 301, and the second reinforcing plate 303 is fixed to the right side surface of the main board 301. In the middle vertical plate 35, the first reinforcing plate 302 is fixed to the right side surface of the main board 301, and the second reinforcing plate 303 is fixed to the left side surface of the main board 301.

[0153] As Figure 9 and Figure 10As shown, the first reinforcing plates 302 of the intermediate vertical plates 34 and 35 respectively can be in a shape including a flat plate-like portion b1 occupying most of its area, a bent portion b2 bent at one end of the flat plate-like portion b1, and a bent portion b3 bent in the same direction as the bent portion b2 at the other end of the flat plate-like portion b1( Figure 10 shown in a substantially U-shaped when viewed from above). The first reinforcing plate 302 and the main board 301 form a closed cross-section. The first reinforcing plate 302 having such a substantially U-shaped closed cross-section helps to improve the strengthening effect using the first reinforcing plate 302 while suppressing weight increase. However, the shape of each first reinforcing plate 302 is not limited to Figure 9 and Figure 10 the shape shown, and can be in other shapes.

[0154] The first reinforcing plates 302 of the intermediate vertical plates 34 and 35 respectively preferably have a width of more than half of the length of the main board 301 in the width direction, and have a length in the up-and-down direction of more than half of the length of the main board 301 in the up-and-down direction. In Figure 9 and Figure 10 the specific examples shown, the first reinforcing plates 302 of the intermediate vertical plates 34 and 35 respectively extend upward from the base plate 31B of the bottom plate 31 to a position near the upper end of the main board 301, and have a width equal to or slightly smaller than the width of the main board 301. However, the size of the first reinforcing plate 302 is not limited to Figure 9 and Figure 10 the specific examples shown.

[0155] The first reinforcing plate 302 can be fixed to the main board 301, for example, by welding the distal ends of the bent portion b2 and the bent portion b3 to the main board 301, or can be fixed to the main board 301 by other methods. In addition, the lower end portion of the first reinforcing plate 302 can be welded to the base plate 31B.

[0156] As Figure 9 and Figure 10 shown, the second reinforcing plates 303 of the intermediate vertical plates 34 and 35 respectively can be formed of a solid member having a thickness greater than that of the main board 301. Accordingly, the strength of the intermediate vertical plates 34 and 35 respectively can be effectively improved. The thickness of each second reinforcing plate 303 can be greater than that of the first reinforcing plate 302.

[0157] The second reinforcing plates 303 of the intermediate vertical plates 34 and 35 respectively preferably have a width of more than half of the length of the main board 301 in the width direction, and have a length in the up-and-down direction of more than half of the length of the main board 301 in the up-and-down direction. In Figure 9 and Figure 10In the specific example shown, the second reinforcing plates 303 of the middle vertical plates 34 and 35 respectively extend upward from the base plate 31B of the bottom plate 31 to a position higher than the upper end of the main plate 301. However, the size of the second reinforcing plate 303 is not limited to Figure 9 and Figure 10 the specific example shown.

[0158] At the upper end portions of the second reinforcing plates 303 of the middle vertical plate 34 and the second reinforcing plates 303 of the middle vertical plate 35, the above-mentioned mounting portions 34a and 35a are respectively formed. That is, the second reinforcing plate 303 of the middle vertical plate 34 is formed of a thick plate extending from the mounting portion 34a to the bottom plate 31, and the second reinforcing plate 303 of the middle vertical plate 35 is formed of a thick plate extending from the mounting portion 35a to the bottom plate 31. This helps to effectively improve the strength of the battery case 30, and also helps to effectively improve the strength of the mounting portions 34a and 35a used in the operation of mounting the lifting member to move the battery case 30.

[0159] The second reinforcing plate 303 can be fixed to the main plate 301 by welding to the main plate 301, for example, or can be fixed to the main plate 301 by other methods. In addition, the lower end portion of the second reinforcing plate 303 can be welded to the base plate 31B.

[0160] The height of the upper end of the outer vertical plate 32 is the same as the height of the upper ends of the middle vertical plate 34 and the middle vertical plate 35, and the height of the upper end of the outer vertical plate 33 is lower than the height of the upper ends of these vertical plates 32, 34, and 35. Except for this point, the outer vertical plate 32 and the outer vertical plate 33 have the same characteristics as each other, and the main plates 301 and the first reinforcing plates 302 of the outer vertical plate 32 and the outer vertical plate 33 respectively have the same characteristics as the main plates 301 and the first reinforcing plates 302 of the middle vertical plate 34 and the middle vertical plate 35.

[0161] That is, in each of the outer vertical plate 32 and the outer vertical plate 33, the first reinforcing plate 302 is fixed to one surface of the main plate 301. In Figure 10 the specific example shown, in the outer vertical plate 32, the first reinforcing plate 302 is fixed to the right side surface of the main plate 301. In the outer vertical plate 33, the first reinforcing plate 302 is fixed to the left side surface of the main plate 301.

[0162] As Figure 9 and Figure 10 shown, the first reinforcing plates 302 of the outer vertical plate 32 and the outer vertical plate 33 respectively can have a shape such as including a flat plate portion b1 occupying most of its area, a bent portion b2 bent at one end portion of the flat plate portion b1, and a bent portion b3 bent in the same direction as the bent portion b2 at the other end portion of the flat plate portion b1 ( Figure 10When viewed from above, it is roughly U-shaped). The first reinforcing plate 302 and the main plate 301 form a closed cross-section.

[0163] The first reinforcing plate 302 can be fixed to the main plate 301, for example, by welding the distal ends of the bent portion b2 and the bent portion b3 to the main plate 301, or can be fixed to the main plate 301 by other methods. In addition, the lower end portion of the first reinforcing plate 302 can be welded to the base plate 31B.

[0164] As described above, each of the outer vertical plates 32 and 33 does not include the second reinforcing plate 303, and each of the intermediate vertical plates 34 and 35 includes the second reinforcing plate 303. Therefore, the thickness of each of the intermediate vertical plates 34 and 35 (for example, the thickness at the center in the width direction) is greater than the thickness of each of the outer vertical plates 32 and 33 (for example, the thickness at the center in the width direction). In the present embodiment, the intermediate vertical plates 34 and 35 including the second reinforcing plate 303 formed of a thick plate having the mounting portions 34a and 35a have a strength capable of bearing the weight of the battery case 30 and the battery 70 when lifting the battery case 30.

[0165] [Modification Example]

[0166] The embodiments of the present disclosure have been described above, but the present disclosure is not limited to the above-described embodiments, and includes, for example, the following modification examples.

[0167] (A) Regarding the intermediate vertical plates of the battery case

[0168] In the above-described embodiment, the battery case includes the intermediate vertical plates 34 and 35, but either one of the intermediate vertical plates 34 and 35 can be omitted. In the above-described embodiment, in addition to the intermediate vertical plates 34 and 35, the battery case can further include at least one intermediate vertical plate. In the above-described embodiment, the intermediate vertical plates 34 and 35 respectively have the mounting portions 34a and 35a, but either one or both of the mounting portions 34a and 35a can be omitted. In addition, it is also possible that each of the pair of outer vertical plates has a mounting portion.

[0169] (B) Regarding the pair of outer vertical plates of the battery case

[0170] In the above-described embodiment, the upper end of the outer vertical plate 32 is at a position higher than the upper end of the outer vertical plate 33, but the upper end of the outer vertical plate 32 can be at a position lower than the upper end of the outer vertical plate 33, and their upper ends can also be at the same height. In the above-described embodiment, the outer vertical plates 32 and 33 are arranged so as to face each other with a space therebetween in the left-right direction, but they can also be arranged, for example, so as to face each other with a space therebetween in the front-rear direction.

[0171] (C) Regarding the upper plate of the battery case

[0172] In the above-described embodiment, the upper plate 36 is formed of a plurality of parts (two parts in Figure 8 this case) that are independent of each other, but the upper plate may also be formed of a single member. In the above-described embodiment, the heights of the two parts are different from each other, but they may also be the same height. In the above-described embodiment, the battery case has the upper plate 36, but the upper plate 36 may also be omitted. In the above-described embodiment, the battery-related device is disposed above the second upper plate 36B, but the battery-related device may also be disposed at a position other than above the second upper plate 36B.

[0173] In the above-described embodiment, the second upper plate 36B covers the space between the outer vertical plate 33 and the middle vertical plate 35 from above, but it may also be configured to cover the space between the outer vertical plate 32 and the middle vertical plate 35 from above. In addition, the first upper plate 36A may also be formed of a plurality of parts. Specifically, the first upper plate 36A may be formed of a member that covers the space between the middle vertical plate 34 and the middle vertical plate 35 from above and a member that is independent of this member and covers the space between the outer vertical plate 32 and the middle vertical plate 34 from above.

[0174] (D) Regarding the front plate of the battery case

[0175] In the above-described embodiment, the battery case 30 has the front plate 38, but the front plate 38 may also be omitted. In addition, in the above-described embodiment, the front plate 38 is divided into a plurality of parts, but it may also be formed of a single member.

[0176] (E) Regarding the battery support device of the battery case

[0177] In the above-described embodiment, the battery case 30 includes two battery support devices 37, but one of the two battery support devices 37 may also be omitted. In addition, the battery case 30 may also not include the battery support device 37. The battery support device 37 is detachably mounted on the bottom plate 31, but it may also be a structure that cannot be detached from the bottom plate 31.

[0178] (F) Regarding the support portion of the battery case

[0179] The support portion of the battery case is not limited to the specific example as in the above-described embodiment, and various structures may be adopted.

[0180] (G) Regarding the battery

[0181] In the above-described embodiment, the battery 70 includes a plurality of battery cells 71, but the battery may also be formed of a single battery cell.

[0182] (H) Regarding the hood

[0183] In the above-described embodiment, the hood 13A has an opening / closing door 131, but the opening / closing door 131 may be omitted.

[0184] (I) Regarding the charging device

[0185] The charging device 50 is not limited to the specific example of the above-described embodiment, and various structures can be adopted.

[0186] As described above, according to the present disclosure, a construction machine including a battery case having a structure that can easily ensure strength can be provided.

[0187] The construction machine according to the first aspect includes: a battery case for housing a battery, the battery case having a bottom plate and a plurality of vertical plates extending upward from the bottom plate, the plurality of vertical plates including a pair of outer vertical plates, at least a part of the space between the pair of outer vertical plates being capable of accommodating the battery, and the plurality of vertical plates further including a first intermediate vertical plate extending upward from the bottom plate between the pair of outer vertical plates. In the construction machine according to the first aspect, since the battery case includes not only the pair of outer vertical plates but also the first intermediate vertical plate disposed therebetween, it is easy to ensure the strength of the battery case.

[0188] The second aspect preferably further includes the following configuration in the first aspect. That is, in the construction machine according to the second aspect, preferably: the battery case has an upper plate for covering the battery from above. In the construction machine according to the second aspect, the battery disposed in the space between the pair of outer vertical plates can be protected by the upper plate.

[0189] The third aspect preferably further includes the following configuration in the first aspect. That is, in the construction machine according to the third aspect, preferably: the plurality of vertical plates further include a second intermediate vertical plate extending upward from the bottom plate between the pair of outer vertical plates. In the construction machine according to the third aspect, the battery case includes not only the first intermediate vertical plate but also the second intermediate vertical plate between the pair of outer vertical plates, and thus it is easier to ensure the strength of the battery case.

[0190] The fourth aspect preferably further includes the following configuration in the third aspect. That is, in the construction machine according to the fourth aspect, preferably: each of the first intermediate vertical plate and the second intermediate vertical plate has a mounting portion capable of attaching and detaching a lifting member for lifting the battery case. In the construction machine according to the fourth aspect, for example, when assembling or disassembling the construction machine, by attaching the lifting member to the mounting portions of the first intermediate vertical plate and the second intermediate vertical plate, the battery case can be moved relatively stably.

[0191] The fifth technical solution preferably further includes the following components in the third technical solution. That is, in the construction machinery related to the fifth technical solution, preferably: the battery housing has a first upper plate that covers the space between the first intermediate vertical plate and the second intermediate vertical plate from above, and each of the first intermediate vertical plate and the second intermediate vertical plate has a mounting portion capable of mounting and disassembling a lifting member for lifting the battery housing, and the mounting portions of each of the first intermediate vertical plate and the second intermediate vertical plate are located above the first upper plate. In the construction machinery related to this fifth technical solution, for example, when assembling or disassembling the construction machinery, it is possible to easily mount the lifting member on the mounting portions of the first intermediate vertical plate and the second intermediate vertical plate respectively.

[0192] The sixth technical solution preferably further includes the following components in the third technical solution. That is, the construction machinery related to the sixth technical solution preferably: further includes battery-related equipment related to the battery, and the battery housing has: a first upper plate that covers the space between the first intermediate vertical plate and the second intermediate vertical plate from above; and a second upper plate that covers the space between one of the pair of outer vertical plates and one of the intermediate vertical plate and the second intermediate vertical plate from above, and the first upper plate and the second upper plate are arranged in a manner that their heights are different from each other, and the battery-related equipment is arranged above the one with the lower height among the first upper plate and the second upper plate. In the construction machinery related to this sixth technical solution, it is possible to effectively utilize the space while arranging the battery-related equipment near the battery.

[0193] The seventh technical solution preferably further includes the following components in any one of the first to sixth technical solutions. That is, the construction machinery related to the seventh technical solution preferably: further includes a body frame arranged at a position spaced downward from the bottom plate of the battery housing, the battery includes a plurality of battery cells, at least a part of the plurality of battery cells can be arranged in at least a part of the space between the pair of outer vertical plates, and the battery housing has a battery support device arranged between the bottom plate and the body frame, and the battery support device can support the other part of the plurality of battery cells. In the construction machinery of this seventh technical solution, not only a part of the plurality of battery cells is arranged in the space between the pair of outer vertical plates, but also the battery support device arranged between the bottom plate of the battery housing and the body frame can support the other part of the battery cells. Accordingly, more battery cells can be arranged in a limited space.

[0194] The eighth technical solution preferably further includes the following components in the seventh technical solution. That is, in the construction machinery related to the eighth technical solution, preferably: the battery support device can be mounted and disassembled relative to the bottom plate. In the construction machinery related to this eighth technical solution, the maintenance operation of the battery cells supported by the battery support device becomes easy.

[0195] The ninth technical solution preferably further includes the following components in any one of the first to eighth technical solutions. That is, in the construction machinery related to the ninth technical solution, preferably: the battery includes a plurality of battery cells, the battery housing has a plurality of support portions supported by two adjacent vertical plates among the plurality of vertical plates and arranged at intervals in the vertical direction, and each of the plurality of support portions supports at least one of the plurality of battery cells. In the construction machinery related to the ninth technical solution, the plurality of support portions can support the vertically arranged battery cells and can also strengthen the battery housing.

[0196] The tenth technical solution preferably further includes the following components in the ninth technical solution. That is, in the construction machinery related to the tenth technical solution, preferably: each of the plurality of support portions includes a plurality of beam members supported by the two vertical plates and arranged at intervals in the horizontal direction. In the construction machinery related to the tenth technical solution, the plurality of beam members supported by the two vertical plates contribute to stably supporting the battery cells and also contribute to strengthening the battery housing.

[0197] The eleventh technical solution preferably further includes the following components in the ninth or tenth technical solution. That is, in the construction machinery related to the eleventh technical solution, preferably: each of the plurality of support portions includes a plurality of mounting members for reducing vibration and a support plate supported by the plurality of mounting members, and the plurality of battery cells are respectively arranged above the support plate. In the construction machinery related to the eleventh technical solution, each of the plurality of support portions can reduce the vibration transmitted to the battery and stably support the battery cells on the support plate.

[0198] The twelfth technical solution preferably further includes the following components in the eleventh technical solution. That is, in the construction machinery related to the twelfth technical solution, preferably: the support plate includes a pair of support members extending in one direction and a plurality of connecting members connecting the pair of support members, and at least one of the plurality of connecting members includes a bent plate. In the construction machinery related to the twelfth technical solution, the support plate has a structure in which the plurality of connecting members respectively connect the pair of support members, and at least one of the plurality of connecting members includes a bent plate. Therefore, it is possible to suppress an increase in the weight of the support plate while ensuring the strength of the support plate.

[0199] The thirteenth technical solution preferably further includes the following components in any one of the first to twelfth technical solutions. That is, in the construction machinery related to the thirteenth technical solution, preferably: the battery housing has a front plate covering the battery from above. In the construction machinery related to the thirteenth technical solution, the front part of the battery can be protected by the front plate.

[0200] The fourteenth technical solution preferably further includes the following components in any one of the first to thirteenth technical solutions. That is, the construction machinery related to the fourteenth technical solution preferably further includes a hood covering the battery housing, and the hood has an opening / closing door for performing maintenance on the battery. In the construction machinery related to the fourteenth technical solution, the battery can be maintained by opening the opening / closing door of the hood, and the battery can be protected by closing the opening / closing door of the hood during the operation of the construction machinery.

[0201] The fifteenth technical solution preferably further includes the following components in the fourteenth technical solution. That is, the construction machinery related to the fifteenth technical solution preferably further includes a work platform that is disposed in front of the hood and can be disassembled. In the construction machinery related to the fifteenth technical solution, the operator can perform battery maintenance on the work platform disposed in front of the hood, and the work platform can be disassembled when it is not needed.

[0202] The sixteenth technical solution preferably further includes the following components in any one of the first to fifteenth technical solutions. That is, the construction machinery related to the sixteenth technical solution preferably further includes a hood covering the battery housing, and the hood has an opening / closing door for performing maintenance on the battery. The battery housing has a front plate that covers the battery from the front, and the front plate is divided into a size that can be disassembled through the opening formed by opening the opening / closing door. In the construction machinery related to the sixteenth technical solution, the front plate can have the functions of protecting the battery and improving the ease of operation when maintaining the battery in a limited space.

[0203] The seventeenth technical solution preferably further includes the following components in any one of the first to sixteenth technical solutions. That is, the construction machinery related to the seventeenth technical solution preferably further includes a machine body frame that supports the battery housing, an outer wall that covers the battery housing, and a charging device. The charging device includes: a base member fixed to at least one of the machine body frame and the outer wall; a charging port mounting member fixed to the base member; and a charging port supported by the charging port mounting member. In the construction machinery related to the seventeenth technical solution, the base member and the charging port mounting member in the charging device are formed by independent members. Therefore, in the limited space near the outer wall that covers the battery housing on the machine body frame, it is easy to balance the ease of operation of fixing the charging device to at least one of the machine body frame and the outer wall and the ease of operation of maintenance operations such as charging.

[0204] Symbol Explanation

[0205] 13: Outer Wall

[0206] 13A: Hood

[0207] 131: Hood opening and closing door

[0208] 14: Machinery room

[0209] 15: Bottom cover

[0210] 20: Machine body frame

[0211] 21: Frame main body

[0212] 30: Battery housing

[0213] 31: Bottom plate

[0214] 32, 33: Outer vertical plates

[0215] 34, 35: Intermediate vertical plates

[0216] 34a, 35a: Mounting parts

[0217] 36: Upper plate

[0218] 36A: First upper plate

[0219] 36B: Second upper plate

[0220] 37: Battery support device

[0221] 38: Front plate

[0222] 38A to 38F: Front plates

[0223] 40: Support part

[0224] 41: Beam member

[0225] 42: Mounting piece

[0226] 43: Support plate

[0227] 44: Support member

[0228] 45 to 47: Connecting members

[0229] 50: Charging device

[0230] 51: Base member

[0231] 52: Charging port mounting member

[0232] 53: Charging port

[0233] 66: Battery-related equipment

[0234] 70: Battery

[0235] 71: Battery cell

[0236] 100: Construction machinery

[0237] 132: Table for work

[0238] 200: Lifting member

[0239] 211: Opening of the frame body

Claims

1. An engineering machinery, characterized in that Comprising: A battery housing for accommodating a battery, wherein the battery housing has: a bottom plate; and a plurality of vertical plates extending upward from the bottom plate, and the plurality of vertical plates include a pair of outer vertical plates, and at least a part of the space between the pair of outer vertical plates can accommodate the battery, and the plurality of vertical plates further include a first intermediate vertical plate extending upward from the bottom plate between the pair of outer vertical plates.

2. The construction machinery according to claim 1, characterized in that the battery housing has an upper plate for covering the battery from above.

3. The construction machinery according to claim 1, characterized in that the plurality of vertical plates further include a second intermediate vertical plate extending upward from the bottom plate between the pair of outer vertical plates.

4. The construction machinery according to claim 3, characterized in that each of the first intermediate vertical plate and the second intermediate vertical plate has a mounting portion for attaching and detaching a lifting member for lifting the battery housing.

5. The construction machinery according to claim 3, characterized in that the battery housing has a first upper plate for covering the space between the first intermediate vertical plate and the second intermediate vertical plate from above, each of the first intermediate vertical plate and the second intermediate vertical plate has a mounting portion for attaching and detaching a lifting member for lifting the battery housing, and the mounting portions of each of the first intermediate vertical plate and the second intermediate vertical plate are located above the first upper plate.

6. The construction machinery according to claim 3, characterized in that Further comprising: Battery-related equipment related to the battery, and wherein the battery housing has: a first upper plate for covering the space between the first intermediate vertical plate and the second intermediate vertical plate from above; and a second upper plate for covering the space between one of the pair of outer vertical plates and one of the first intermediate vertical plate and the second intermediate vertical plate from above, the first upper plate and the second upper plate are configured in a manner that their heights are different from each other, and the battery-related equipment is disposed above the one with a lower height among the first upper plate and the second upper plate.

7. The construction machinery according to claim 1 or 2, characterized in that Further comprising: A body frame disposed at a position spaced apart from the bottom plate of the battery housing downward, and the battery includes a plurality of battery cells, at least a part of the space between the pair of outer vertical plates can accommodate a part of the plurality of battery cells, the battery housing has a battery support device disposed between the bottom plate and the body frame, and the battery support device can support another part of the plurality of battery cells.

8. The construction machinery according to claim 7, characterized in that the battery support device can be attached and detached relative to the bottom plate.

9. The construction machinery according to claim 1 or 2, characterized in that the battery includes a plurality of battery cells, the battery housing has a plurality of support portions supported by two adjacent vertical plates among the plurality of vertical plates and disposed at intervals in the vertical direction, and each of the plurality of support portions supports at least one of the plurality of battery cells.

10. The construction machinery according to claim 9, characterized in that each of the plurality of support portions includes a plurality of beam members supported by the two vertical plates and disposed at intervals in the horizontal direction.

11. The construction machinery according to claim 9, wherein each of the plurality of support portions includes a plurality of mounting members for reducing vibration and a support plate supported by the plurality of mounting members, and the plurality of battery units are respectively disposed on the support plate.

12. The construction machinery according to claim 11, wherein the support plate includes a pair of support members extending in one direction and a plurality of connecting members connecting the pair of support members, and at least one of the plurality of connecting members includes a bent plate.

13. The construction machinery according to claim 1 or 2, wherein the battery housing has a front plate that covers the battery from the front.

14. The construction machinery according to claim 1 or 2, characterized in that It further includes: a hood that covers the battery housing, and the hood has an opening / closing door for performing maintenance of the battery.

15. The construction machinery according to claim 14, characterized in that It further includes: a work platform that is disposed in front of the hood and can be attached and detached.

16. The construction machinery according to claim 1 or 2, characterized in that It further includes: a hood that covers the battery housing, the hood has an opening / closing door for performing maintenance of the battery, the battery housing has a front plate that covers the battery from the front, and the front plate is divided into a size that can be detached through an opening formed by opening the opening / closing door.

17. The construction machinery according to claim 1 or 2, characterized in that It further includes: a body frame that supports the battery housing; an outer wall that covers the battery housing; and a charging device, wherein the charging device includes: a base member fixed to at least one of the body frame and the outer wall; a charging port mounting member fixed to the base member; and a charging port supported by the charging port mounting member.

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