Battery holder

Abstract

According to the present invention, battery receiving parts (80, 82) and a receiving part (87) for an electrical component are formed within a housing (50) of a battery receiving device (20). The battery receiving device comprises a plurality of second connecting elements (96, 98) and an electrical component (86) which is received in the receiving part for an electrical component. The second connecting elements are parts of movable bodies that move towards or away from the battery receiving parts. Due to the movement of the movable bodies, the second connecting elements engage with or are separated from first connecting elements (32) of removable batteries (30), which are releasably received in the battery receiving parts.At least one section of the electrical components is positioned within a region (140) which is formed within operating ranges of the movable bodies (97, 99).

Description

Technical field

[0001] The present invention relates to a battery receiving device for receiving a plurality of detachable batteries in an insertable and removable manner. Technical background

[0002] WO 2019 / 064556 A1 discloses a battery housing device provided in a motorcycle. The battery housing device comprises two resin housing sections. The two resin housing sections each accommodate two detachable batteries in an insertable and removable manner. The two detachable batteries are arranged along the vehicle's longitudinal direction (front-rear direction). The two detachable batteries accommodated in the battery housing device supply electrical power, for example, to a motor. Consequently, the motorcycle moves.

[0003] The battery receiving device is provided with operating levers. When the battery is inserted into the battery receiving device, the operating lever is retracted to a position where the operating lever does not affect the battery. After the battery is inserted into the battery receiving device, the user pivots the operating lever. In accordance with this, a locking element is operated, preventing the battery from detaching. At the same time, a device-side connecting element provided in the battery receiving device is operated. The device-side connecting element engages with a battery-side connecting element provided on the battery. Summary of the invention

[0004] The operating lever is connected to the device-side connecting element via a terminal displacement mechanism (connecting mechanism). A space for the elements constituting the terminal displacement mechanism to move is required in a lower portion of the resin housing section. Therefore, no element or the like can be arranged in this space. For this reason, the shape of the elements and the like is limited.

[0005] The present invention aims to solve the problem described above.

[0006] According to one embodiment of the present invention, a battery receiving device is provided which comprises a housing, wherein battery receiving sections and an electrical component receiving section are formed in an interior of the housing, and a plurality of detachable batteries are respectively insertably and removably received in the battery receiving sections, the battery receiving device comprising: a plurality of second connecting elements which respectively engage with first connecting elements of the plurality of detachable batteries received in the battery receiving sections when the second connecting elements enter interiors of the battery receiving sections, and which respectively separate from the first connecting elements when the second connecting elements retract from the interiors of the battery receiving sections;a plurality of movable bodies each including the plurality of second connecting elements and moving in a direction toward or away from the battery accommodating portions; and an electrical component accommodated in the electrical component accommodating portion, wherein at least a portion of the electrical component is disposed in a region sandwiched between a first imaginary line and a second imaginary line, the first imaginary line connecting one end of an operating range of one movable body among the plurality of movable bodies and one end of an operating range of another movable body among the plurality of movable bodies, and the second imaginary line connecting another end of the operating range of the one movable body and another end of the operating range of the other movable body.

[0007] The "operating range" refers to a range in which the movable body is actually operated. The "range" refers to a range formed between the operating range of one of the plurality of movable bodies and the operating range of the other of the movable bodies. However, this range does not include the operating ranges of the plurality of movable bodies.

[0008] If some element is installed in the operating area of ​​the movable body, including, for example, the second connecting element, the second connecting element may interfere with the element and become immobile. To avoid this situation, it is conceivable to arrange an electrical component in a space separate from the operating area. However, the present inventor has focused on the fact that an area located between the operating areas of the movable bodies is an empty space (dead space).

[0009] Therefore, in the present invention, at least a portion of the electrical component is disposed in a region formed between the operating region of one movable body and the operating region of the other movable body. That is, the dead space is effectively utilized as a space for accommodating the electrical component. Therefore, it is not necessary to form an electrical component accommodating portion different from the region. This makes it possible to dispose elements and the like other than the electrical component in the different space. Therefore, the degree of freedom in designing the elements and the like is improved. Furthermore, since the region formed between the operating region of one movable body and the operating region of the other movable body is not a dead space, the size of the battery accommodating device can be reduced. Brief description of the drawings [ Fig. 1] Fig. 1 is a schematic overall side view of a hydraulic mini excavator incorporating a battery receiving device; [ Fig. 2] Fig. 2A is a schematic overall perspective view of a detachable battery from one direction, and Fig. Figure 2B is a schematic overall perspective view from a direction different from that in Fig. 2A; [ Fig. 3] Fig. 3 is an exploded perspective view of a housing constituting the battery receiving device; [ Fig. 4] Fig. 4 is a schematic longitudinal cross-sectional view of the battery support device viewed from the rear of the mini hydraulic excavator; [ Fig. 5] Fig. 5 is a schematic plan view of the inside of the battery receiving device (a first battery receiving portion and a second battery receiving portion); [ Fig. 6] Fig. 6 is a schematic perspective view of a link moving mechanism; [ Fig. 7] Fig. 7 is a schematic longitudinal cross-sectional view showing a state in which a second connecting member is arranged at the lowest position; [ Fig. 8] Fig. 8 is a schematic perspective view showing a state in which a locking member is separated from an upper surface of the detachable battery; [ Fig. 9] Fig. Fig. 9 is a schematic longitudinal cross-sectional view showing a state in which the second connecting member is arranged at the highest position; and [ Fig. 10] Fig. 10 is a schematic perspective view showing a state in which the locking member is in contact with the upper surface of the detachable battery. Detailed description of the invention

[0010] In the following description, “front”, “rear”, “left”, “right”, “top” and “bottom” are directions based on the front, back, left side, right side, top side and bottom side of a user sitting on a seat 16 of a hydraulic mini excavator 10 which is in Fig. 1. However, these terms indicate a relative positional relationship. For example, a battery receiving device 20 is provided behind the seat 16 in the mini hydraulic excavator 10. In the battery receiving device 20, a portion facing the front of the vehicle body of the mini hydraulic excavator 10 is a front portion, and a portion facing the rear of the vehicle body of the mini hydraulic excavator 10 is a rear portion. The front-rear, left-right, and up-down directions are directions for convenience of description and do not necessarily indicate the lower side and the upper side when the battery receiving device 20 is actually used.

[0011] Additionally, "lower" and "higher" refer to a relatively lower side and a relatively upper side. The terms "lower" and "higher" do not necessarily imply that the components are arranged along the vertical direction.

[0012] Fig. Figure 1 is a schematic overall side view of the hydraulic mini excavator 10. The hydraulic mini excavator 10 includes a traveling unit 12, a basket 14, the seat 16, and the battery receiving device 20 according to the present embodiment. The battery receiving device 20 accommodates two detachable batteries 30, which will be described later. The two detachable batteries 30 are arranged along a direction perpendicular to the paper surface. Fig. 1. In Fig. 1 shows one of the two removable batteries 30.

[0013] A PDU 22, which serves as a control device, and a motor 24 are housed within the hydraulic mini excavator 10. The motor 24 is driven under the control of the PDU 22 based on electric power supplied by the two detachable batteries 30. The motor 24 drives the propulsion unit 12. Consequently, the hydraulic mini excavator 10 propel. In the hydraulic mini excavator 10, the front side during propulsion is a direction toward the basket 14.

[0014] In the mini hydraulic excavator 10, a housing holder 26 is provided behind the seat 16. The battery receiving device 20 is held by the mini hydraulic excavator 10 via the housing holder 26. The housing holder 26 is inclined so that it is closer to a ground G as it extends rearward. Further, a lowermost end of the housing holder 26 is arranged higher than, for example, an upper end of the traveling unit 12. In this case, the battery receiving device 20 is arranged higher than the traveling unit 12 as a whole. Alternatively, the lowermost end of the housing holder 26 may be arranged at the same position as, for example, the upper end of the traveling unit 12. In this case, a lower end of the battery receiving device 20 and the upper end of the traveling unit 12 are arranged at the same position.

[0015] Next, the detachable battery 30 will be described schematically. Fig. 2A is a schematic overall perspective view of the detachable battery 30 from one direction. Fig. Figure 2B is a schematic overall perspective view from a different direction than that of Fig. 2A. The removable battery 30 has a substantially rectangular parallelepiped shape that is vertically elongated. When viewed from above, the shape of the removable battery 30 is substantially square or substantially rectangular.

[0016] A cell holder holding a plurality of unit cells is housed in the detachable battery 30. Since such a configuration of the detachable battery 30 is known, a detailed description and illustration of the unit cells, cell holder, and the like will be omitted. The unit cell is formed, for example, from a lithium secondary battery and can be repeatedly charged and discharged.

[0017] A female first connector 32 is provided on a lower surface of the removable battery 30. After the removable batteries 30 are received in the battery receiving device 20, male second connectors (a left second connector 96 and a right second connector 98) engage the first connectors 32. Thus, the first connectors 32 and the second connectors are electrically connected to each other. This feature will be described later.

[0018] A grip portion 34 to be grasped by the user is provided at an upper portion of the detachable battery 30. The grip portion 34 includes a rod-shaped portion 36 and an arc portion 38. The arc portion 38 is provided in an arc shape at one end of an upper surface of the detachable battery 30. The rod-shaped portion 36 is continuous with the arc portion 38 to be orthogonal thereto. A space 40 is formed between the upper surface of the detachable battery 30 and the rod-shaped portion 36 and the arc portion 38. When the user grasps the rod-shaped portion 36, the user's fingers or hand are passed through the space 40. The user grips the grip portion 34 to insert and remove the detachable battery 30 into and from the battery receiving device 20.Note that the first connecting member 32 is arranged on the bottom surface of the detachable battery 30 so as to be closer to the one end side at which the arc portion 38 is provided.

[0019] As will be described later, in the detachable battery 30, the lower end including the bottom surface is a first end. The first end is an end portion on a side where insertion is started when the detachable battery 30 is inserted into the battery receiving device 20. On the other hand, the upper end including the grip portion 34 is a second end. The second end is an end portion on a side where removal is started when the detachable battery 30 is removed from the battery receiving device 20.

[0020] Next, the battery housing device 20 according to the present embodiment will be described. Fig. 3 is an exploded perspective view of a housing 50 constituting the battery receiving device 20. The housing 50 includes a bottom member 52, a first body member 54, a second body member 56, and a cover member 58. The bottom member 52 is inserted into the bottom of the housing holder 26. An insertion hole 60 is formed in the bottom member 52.

[0021] The first body member 54 is disposed at the front portion of the mini hydraulic excavator 10, and the second body member 56 is disposed at the rear portion of the mini hydraulic excavator 10. The first body member 54 and the second body member 56 form a housing body 62. The length of the housing body 62 along the vehicle width direction (the left-right direction) of the mini hydraulic excavator 10 is greater than the length of the housing body 62 along the vehicle length direction (the front-rear direction) of the mini hydraulic excavator 10.

[0022] A lower end and an upper end of the housing body 62 are open ends. The lower opening is closed by the bottom member 52. The upper opening is opened or closed based on a pivoting of the cover member 58. Specifically, a front end of the cover member 58 is attached to an upper end of the first body member 54 by means of a hinge 64. The cover member 58 is pivoted about the hinge 64, as shown by a solid line and an imaginary line in Fig. 1. When the cover member 58 pivots, the front end of the cover member 58 is engaged with or separated from the upper end of the second body member 56. The second body member 56 is provided with an annular locking portion (not shown). A hook portion (not shown) is provided at a rear end of the cover member 58. When the user hooks the locking portion onto the hook portion, the front end of the cover member 58 is held at a position where the front end of the cover member 58 is engaged with the upper end of the first body member 54.

[0023] The hinge includes a spring (not shown). The spring exerts a force on the cover member 58 to separate the rear end of the cover member 58 from the second body member 56. Therefore, when the user releases the locking portion from the hook portion, the rear end of the cover member 58 automatically pivots in a direction away from the upper end of the second body member 56.

[0024] The housing body 62 receives a bracket 70 (a fastening element) which is Fig. 4, and a first housing section 72, a second housing section 74 and a third housing section 76, which are shown in Fig. 3. The first housing section 72 and the second housing section 74 are bottomed, cup-shaped boxes. The first housing section 72 and the second housing section 74 have the same shape. The third housing section 76 is a frame body including two openings 78a and 78b. The third housing section 76 includes a partition wall section 79 spanning an upper right end of the first housing section 72 and an upper left end of the second housing section 74. The first housing section 72, the second housing section 74, and the third housing section 76 form a first battery receiving section 80 and a second battery receiving section 82. That is, in the present embodiment, two battery receiving sections are formed as one battery receiving section. The first battery receiving section 80 and the second battery receiving section 82 share the single third housing section 76.Furthermore, an upper portion of the first battery receiving portion 80 and an upper portion of the second battery receiving portion 82 are formed and defined by the third housing portion 76. That is, the third housing portion 76 (the partition wall portion 79) also serves as the partition wall between the upper portion of the first battery receiving portion 80 and the upper portion of the second battery receiving portion 82.

[0025] When the removable batteries 30 are respectively received in the first battery receiving portion 80 and the second battery receiving portion 82, the first housing portion 72 and the second housing portion 74 cover the lower ends (the first ends) of the removable batteries 30, respectively. The third housing portion 76 covers the upper ends (the second ends) of the two removable batteries 30.

[0026] As in Fig. 4, the first housing portion 72 and the second housing portion 74 are positioned and secured to the first body member 54 and the second body member 56 by means of a housing holder 84. Bottom walls of the first housing portion 72 and the second housing portion 74 are separated from an inner surface of the bottom member 52. That is, a space is formed between the bottom member 52 and the first housing portion 72 and the second housing portion 74. This space is an electrical component receiving portion 87 for receiving an electrical component 86. The electrical component 86 is held by the housing holder 84 by means of the bracket 70. In other words, the electrical component 86 is attached to the bracket 70 to obtain an assembly. In this assembled state, the bracket 70 is held by the housing holder 84.It should be noted that, although not shown, cables and the like are also received in the electrical component receiving portion 87.

[0027] The electrical component 86 includes, for example, a branching unit 160, a precharge relay 162, a step-down regulator 164, and the like, as shown in Fig. 5. The branching unit 160 is arranged behind the precharge relay 162 and the step-down regulator 164. Fig. Figure 5 shows approximate positions of the branching unit 160, the precharge relay 162, and the step-down regulator 164 when the first battery receiving section 80 and the second battery receiving section 82 are viewed from above. The electrical component 86 may further include a contact element.

[0028] U-shaped plates 112, which will be described later, are each provided with a left wire harness support portion 92 and a right wire harness support portion 94. The left wire harness support portion 92 is movable integrally with the left second link member 96, which will be described later. Specifically, the left wire harness support portion 92 and the left second link member 96 constitute a left movable body 97. The left movable body 97 moves in a direction toward or away from the first battery accommodating portion 80. The right wire harness support portion 94 is movable integrally with the right second link member 98, which will be described later. The right wire harness support portion 94 and the right second link member 98 constitute a right movable body 99. The right movable body 99 moves in a direction toward or away from the second battery accommodating portion 82.

[0029] The battery receiving device 20 includes the second connecting member. The number of second connecting members is the same as the number of battery receiving sections. In the present embodiment, the number of battery receiving sections is two, namely the first battery receiving section 80 and the second battery receiving section 82. Therefore, the number of second connecting members is also two. Hereinafter, in order to clearly distinguish between the two second connecting members, the second connecting member that enters or retracts from the first battery receiving section 80 is referred to as the left second connecting member 96. The second connecting member that enters or retracts from the second battery receiving section 82 is referred to as the right second connecting member 98.

[0030] As in Fig. 5, a first insertion opening 100 is formed in the bottom wall of the first housing portion 72. The left second link member 96 enters or retracts from the first battery accommodating portion 80 through the first insertion opening 100. The first insertion opening 100 is located near the left end of the first battery accommodating portion 80 in the vehicle width direction (one end side in the horizontal direction). Therefore, the left second link member 96 is positioned at the left end side of the first battery accommodating portion 80 in the vehicle width direction. A second insertion opening 102 is formed in the bottom wall of the second housing portion 74. The right second link member 98 enters or retracts from the second battery accommodating portion 82 through the second insertion opening 102.The second insertion opening 102 is located near the right end of the second battery accommodating portion 82 in the vehicle width direction (the other end side in the horizontal direction). Therefore, the right second link member 98 is positioned at the right end side of the second battery accommodating portion 82 in the vehicle width direction. Accordingly, the left second link member 96 and the right second link member 98 are spaced apart from each other by a greater distance than in a case where the left second link member 96 and the right second link member 98 are installed at the centers of the first battery accommodating portion 80 and the second battery accommodating portion 82 in the vehicle width direction, respectively.

[0031] Two operating levers 104 are accommodated in the housing 50. One of the two operating levers 104 operates the left second connecting element 96. The other of the two operating levers 104 operates the right second connecting element 98. In addition, locking elements 106 (see Fig. 8 and Fig. 10) according to the pivoting of the operating levers 104, thereby preventing the detachable batteries 30 from separating from the battery receiving device 20.

[0032] The operating levers 104 each form a connecting element movement mechanism 110, which in Fig. 6. The connecting element moving mechanism 110 is described in detail as the terminal displacement mechanism in WO 2019 / 064556 A1. Therefore, only an overview description of the connecting element moving mechanism 110 for moving the left second connecting element 96 will be given in this specification.

[0033] As in Fig. As shown in Figure 6, the link moving mechanism 110 includes the U-shaped plate 112, connecting rods 114a and 114b, support struts 116a and 116b, and the operating lever 104. The left second link 96 is held on a horizontal portion of the U-shaped plate 112, which has a substantially U-shape. A connecting pin 96a (see Fig. 4), which forms the left second link member 96, is arranged on the inner surface of the horizontal portion of the U-shaped plate 112. The U-shaped plate 112 and the operating lever 104 are connected to each other by means of connecting rods 114a and 114b. The connecting rod 114a extends along a front wall of the first housing portion 72. The support strut 116a is connected to the front wall of the first housing portion 72 by means of a bolt (not shown). The connecting rod 114b extends along a rear wall of the first housing portion 72. The support strut 116b is connected to the rear wall of the first housing portion 72 by means of a bolt (not shown).

[0034] When viewed from the front or rear, the operating lever 104 is bent into a substantially L-shaped configuration. Specifically, the operating lever 104 includes two short connecting portions 118a and 118b and a long grip portion 120. One end portion of the connecting portion 118a is connected to the connecting rod 114a via a connecting pin 122, and is connected to the support stay 116a via a first pivot shaft 124. Similarly, one end portion of the connecting portion 118b is connected to the connecting rod 114b via the connecting pin 122, and is connected to the support stay 116b via the first pivot shaft 124. The extending directions of the two first pivot shafts 124 are both the vehicle longitudinal direction.

[0035] The operating lever 104 is provided with two locking elements 106 to prevent the detachable battery 30 from being separated. The two locking elements 106 are pivotally supported by the operating lever 104 via second pivot shafts 126 extending in the vehicle width direction. The extension direction of the second pivot shaft 126 is orthogonal to the extension direction of the first pivot shaft 124.

[0036] As will be described later, when the handle portion 120 of the operating lever 104 is lowered to the lowest position, the left second link member 96 separates from the first link member 32 and is lowered to the lowest position, as shown in Fig. 7. At this time, as shown in Fig. 8, the two locking elements 106 are separated from the upper surface of the detachable battery. That is, the lowest position of the grip portion 120 of the operating lever 104 is a position (an unlocking position of the operating lever 104) at which the detachable battery 30 is unlocked. The unlocking position (the lowest position) of the operating lever 104 refers to a state in which the operating lever 104 is positioned at the left end side of the third housing portion 76 in the vehicle width direction. It should be noted that in Fig. 8 the cover element 58 was omitted.

[0037] On the other hand, when the handle portion 120 of the operating lever 104 is raised to the highest position, the left second link member 96 is raised to the highest position and engages with the first link member 32, as shown in Fig. 9. At this time, as shown in Fig. 10, the two locking elements 106 are pressed against the upper surface of the detachable battery 30. That is, the highest position of the grip portion 120 of the operating lever 104 is a position (a locking position of the operating lever 104) at which the detachable battery 30 is locked. The locking position (the highest position) of the operating lever 104 refers to a state in which the operating lever 104 is positioned substantially at the center of the opening 78a of the third housing portion 76. It should be noted that also in Fig. 10 the cover element 58 was omitted.

[0038] The link moving mechanism 110 for moving the right second link 98 has the same configuration as described above. Therefore, the same constituent elements are denoted by the same reference numerals, and a detailed description thereof will be omitted. The highest position of the grip portion 120 of the operation lever 104 is a position (a locking position of the operation lever 104) at which the detachable battery 30 is locked. The locking position (the highest position) of the operation lever 104 refers to a state in which the operation lever 104 is positioned substantially at the center of the opening 78b of the third housing portion 76. The lowest position of the grip portion 120 of the operation lever 104 is a position (an unlocking position of the operation lever 104) at which the detachable battery 30 is unlocked.The unlocking position (the lowest position) of the operation lever 104 refers to a state in which the operation lever 104 is positioned on the right end side of the third housing portion 76 in the vehicle width direction.

[0039] Fig. 7 shows a state in which the left second link member 96 and the right second link member 98 are lowered to the lowest position. The lowest position is a position in which the left second link member 96 and the right second link member 98 have retracted from the first battery receiving portion 80 and the second battery receiving portion 82 to the maximum extent, respectively. At this time, the left wire harness supporting portion 92 and the right wire harness supporting portion 94 are located at the positions (lowest positions) farthest from the first battery receiving portion 80 and the second battery receiving portion 82, respectively.

[0040] Fig. 9 shows a state in which the left second link member 96 and the right second link member 98 are raised to the highest position. The highest position is a position at which the left second link member 96 and the right second link member 98 have entered the first battery receiving portion 80 and the second battery receiving portion 82 to the maximum extent, respectively. At this time, the left wire harness supporting portion 92 and the right wire harness supporting portion 94 are at the positions (highest positions) closest to the first battery receiving portion 80 and the second battery receiving portion 82, respectively.

[0041] A left wire harness 130 is connected to a lower end of the left second connecting member 96. The left wire harness 130 is supported by the left wire harness support portion 92 and is electrically connected to the electrical component 86. In the left wire harness 130, a portion supported by the left wire harness support portion 92 follows the movement of the left second connecting member 96 and moves integrally with the left second connecting member 96. A right wire harness 132 is connected to a lower end of the right second connecting member 98. The right wire harness 132 is supported by the right wire harness support portion 94 and is electrically connected to the electrical component 86. In the right wire harness 132, a portion supported by the right wire harness support portion 94 follows the movement of the right second connecting member 98 and moves integrally with the right second connecting member 98.

[0042] As in Fig. 9, in the left second connecting member 96 located at the highest position, the terminal pin 96a is mainly exposed within the first battery receiving portion 80 through the first insertion opening 100. Similarly, in the right second connecting member 98 located at the highest position, a terminal pin 98a is mainly exposed within the second battery receiving portion 82 through the second insertion opening 102. That is, the lower ends of the left second connecting member 96 and the right second connecting member 98 are not exposed within the first battery receiving portion 80 and the second battery receiving portion 82 through the first insertion opening 100 and the second insertion opening 102, respectively.Accordingly, the left wire harness 130 and the right wire harness 132 are arranged entirely outside the first battery receiving portion 80 and the second battery receiving portion 82.

[0043] In the present embodiment, an “operation range AR1 of the left movable body 97” refers to a range located between a first imaginary line L1 and a second imaginary line L2 shown in Fig. 7 and Fig. 9, and in which the left movable body 97 actually moves. An “operational range AR2 of the right movable body 99” refers to a range located between the first imaginary line L1 and the second imaginary line L2 shown in Fig. 7 and Fig. 9, and in which the right movable body 99 actually moves. In particular, the operating areas AR1 and AR2 are areas indicated by thick broken lines in Fig. 7 and 9 respectively.

[0044] The first imaginary line L1 is a straight line passing through an end portion of the left wire harness support portion 92 located at the lowest position, the end portion being farthest from the first battery receiving portion 80, and an end portion of the right wire harness support portion 94 located at the lowest position, the end portion being farthest from the second battery receiving portion 82. The second imaginary line L2 is a straight line passing through a distal end of the terminal pin 96a of the left second connecting member 96 located at the highest position, and a distal end of the terminal pin 98a of the right second connecting member 98 located at the highest position.

[0045] Fig. 7 also shows a third imaginary line L3. The third imaginary line L3 is a straight line passing through the lower end of the left second link member 96, which is located at the lowest position, and the lower end of the right second link member 98, which is located at the lowest position.

[0046] Fig. 9 also shows a fourth imaginary line L4. The fourth imaginary line L4 is a straight line passing through the lower end of the left second link member 96, which is located at the highest position, and the lower end of the right second link member 98, which is located at the highest position.

[0047] As from Fig. 7 and Fig. 9, in the present embodiment, the entire electrical component 86 is arranged in an area 140 between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99. In other words, the electrical component 86 is accommodated in the area 140 sandwiched between the first imaginary line L1 and the second imaginary line L2. However, the operating areas AR1 and AR2 are not included in the area 140. That is, the electrical component 86 is not arranged in the operating areas AR1 and AR2. Furthermore, the situation in which a portion of the electrical component 86 enters the operating areas AR1 and AR2 is prevented.

[0048] A lower portion of the step-down regulator 164 and a substantially central portion of the pre-charge relay 162 in the up-down direction are arranged along the third imaginary line L3, with the step-down regulator 164 and the pre-charge relay 162 constituting the electrical component 86. Upper portions of the step-down regulator 164 and the pre-charge relay 162 are arranged along the fourth imaginary line L4. Further, a left portion of the step-down regulator 164 is arranged on the lower right side of the first battery accommodating portion 80, and the entire pre-charge relay 162 is arranged on the lower left side of the second battery accommodating portion 82. In other words, a lower right portion of the first battery receiving portion 80 overlaps an upper left portion of the step-down regulator 164, and a lower left portion of the second battery receiving portion 82 overlaps the upper portion of the pre-charge relay 162.

[0049] In this case, as in Fig. 4, the partition wall portion 79 is disposed in the third housing portion 76 above (substantially directly above) the step-down regulator 164. The partition wall portion 79 is disposed at an upper end of the housing 50 to prevent rainwater or the like from entering the housing 50. Specifically, the partition wall portion 79 plays a role of positioning and fixing the first housing portion 72 and the second housing portion 74, and a role of protecting the step-down regulator 164 and the like from rainwater and the like (a role of preventing the electrical component 86 from being wetted by water).

[0050] The first housing section 72 and the second housing section 74 are arranged at positions which are line-symmetrical with respect to a symmetry line M which is shown in Fig. 4 and Fig. 5. Therefore, the first battery receiving portion 80 and the second battery receiving portion 82 are also in a line-symmetrical positional relationship. Furthermore, the left wire harness supporting portion 92 and the right wire harness supporting portion 94 are also in a positional relationship of line symmetry with respect to the symmetry line M.

[0051] The battery receiving device 20 according to the present embodiment is configured substantially as described above. Next, the operation and effect of the battery receiving device 20 will be described.

[0052] In the present embodiment, the first housing portion 72 and the second housing portion 74 have the same shape. Therefore, the first housing portion 72 and the second housing portion 74 can be manufactured by the same molding device. In other words, it is not necessary to manufacture the first housing portion 72 and the second housing portion 74 separately. Therefore, the manufacturing cost of the battery housing device 20 can be reduced.

[0053] When assembling the battery storage device 20, the electrical component 86, including the branching unit 160, the pre-charge relay 162, the step-down regulator 164, and the like, are attached to the bracket 70. Thus, an assembly of the electrical component 86 and the bracket 70 is obtained. The assembly is attached to the housing holder 84. In this way, by forming an assembly in which the electrical component 86 is attached to the bracket 70, the electrical component 86 can be easily positioned and secured to the housing holder 84.

[0054] The first housing portion 72 and the second housing portion 74 are attached to the housing holder 84. Further, the third housing portion 76 is attached to the first housing portion 72 and the second housing portion 74. Thus, the first battery receiving portion 80 and the second battery receiving portion 82 are formed. The link moving mechanisms 110 are provided for the first battery receiving portion 80 and the second battery receiving portion 82, respectively. The link moving mechanism 110 of the first battery receiving portion 80 is provided with the left second link 96. The left wire harness 130, which is connected to the left second link 96, is supported by the left wire harness support portion 92. The link moving mechanism 110 of the second battery receiving portion 82 is provided with the right second link 98.The right wire harness 132, which is connected to the right second connecting member 98, is supported by the right wire harness support portion 94.

[0055] The first battery receiving portion 80 and the second battery receiving portion 82 are in a line-symmetrical positional relationship, and the left wire harness support portion 92 and the right wire harness support portion 94 are also in a line-symmetrical positional relationship. Therefore, the lengths of the left wire harness 130 and the right wire harness 132 can be made substantially equal. Furthermore, in this case, the lengths of the left wire harness 130 and the right wire harness 132 are minimized.

[0056] In the present embodiment, the left second connecting member 96 is arranged closer to the left end side in the vehicle width direction, and the right second connecting member 98 is arranged closer to the right end side in the vehicle width direction. Therefore, the left second connecting member 96 and the right second connecting member 98 are separated from each other by a greater distance than in a case where the left second connecting member 96 and the right second connecting member 98 are installed at the centers of the first battery receiving portion 80 and the second battery receiving portion 82, respectively, in the vehicle width direction. Therefore, a sufficient space for disposing the electrical component 86 is formed between the left second connecting member 96 and the right second connecting member 98. The electrical component 86 includes a wire harness that is electrically connected to the PDU 22.The wiring harness is pulled out of the insertion hole 60 of the floor element 52.

[0057] The first body member 54 and the second body member 56 are attached to the bottom member 52. Thus, the case body 62 is formed. Further, the cover member 58 is attached to the first body member 54 by means of the hinge 64, thereby obtaining the case 50. The bracket 70 that holds the assembly and the case holder 84 that holds the bracket 70 are housed in the case 50. A joined body in which the first case portion 72 and the second case portion 74 are connected by means of the third case portion 76 is previously held in the case holder 84. Therefore, by receiving the case holder 84, the battery receiving device 20 is obtained in which the first battery receiving portion 80 and the second battery receiving portion 82 are arranged within the case 50.

[0058] Within the housing 50, the electrical component receiving portion 87 is formed between the floor member 52 and the bottom walls of the first housing portion 72 and the second housing portion 74. As can be understood, the electrical component 86 is not interposed between the first battery receiving portion 80 and the second battery receiving portion 82. Therefore, the battery receiving device 20 is prevented from increasing in size along the vehicle width direction of the mini hydraulic excavator 10.

[0059] The battery support device 20 is attached to the rear portion of the vehicle body of the hydraulic mini excavator 10, which is in Fig. 1. The wire harness drawn out of the insertion hole 60 of the base member 52 is electrically connected to the motor 24 via the PDU 22 in the vehicle body of the mini hydraulic excavator 10.

[0060] When the detachable battery 30 is accommodated in the first battery accommodating portion 80 in a state where the top cover is opened, the user confirms that the operation lever 104 is in the unlock position. At this time, the left second link 96 and the right second link 98 are located at the lowest position. The third imaginary line L3 is formed by a straight line passing through the lower end of the left second link 96 and the lower end of the right second link 98. The user then grasps the rod-shaped portion 36 of the detachable battery 30 and lifts the detachable battery 30. The user slides the detachable battery 30 into the first housing portion 72 from the opening 78a of the third housing portion 76 with the arc portion 38 facing to the left.Since the first battery receiving portion 80 is inclined from the rear toward the front as it extends from the upper side toward the lower side, an inner wall of the third case portion 76 and an inner wall of the first case portion 72 support a part of the detachable battery 30. Since the detachable battery 30 can be slid into the first battery receiving portion 80 in this state, insertion of the detachable battery 30 into the first battery receiving portion 80 is easy.

[0061] The removable battery 30 stops when the bottom surface of the removable battery 30 abuts the bottom wall of the first housing portion 72. At this time, the first connecting member 32 and the left second connecting member 96 face each other via the first insertion opening 100. In the first battery receiving portion 80, the lower end of the removable battery 30 is covered by the first housing portion 72, and the upper end of the removable battery 30 is covered by the third housing portion 76.

[0062] Next, the user grasps the operating lever 104 and pivots the operating lever 104 to the locking position. The first pivot shafts 124 serve as the pivot center at this time. With this pivoting, the left second link 96 is lifted toward the highest position. At the same time, the left wire harness 130 is pulled by the left second link 96 and is lifted. The left second link 96, which has been lifted, passes through the first insertion opening 100 and enters the first battery receiving portion 80 (see Fig. 9). When the left second connecting element 96 reaches the highest position, the connecting pin 96a engages with the first connecting element 32. Thus, the detachable battery 30 and the electrical component 86 are electrically connected to each other. Furthermore, the detachable battery 30 and the motor 24 in the mini hydraulic excavator 10 are electrically connected to each other via the PDU 22.

[0063] By pivoting the operating lever 104 toward the locking position, the two locking elements 106 are pivoted about the second pivot shafts 126 and abut against the upper surface of the detachable battery 30, as shown in Fig. 10. Consequently, the detachable battery 30 is prevented from separating from the first battery receiving portion 80.

[0064] In the same manner as described above, the user inserts the detachable battery 30 into the second battery receiving portion 82. The detachable battery 30 stops when the bottom surface of the detachable battery 30 abuts against the bottom wall of the second housing portion 74. At this time, the first connecting member 32 and the right second connecting member 98 face each other via the second insertion opening 102. In the second battery receiving portion 82, the lower end of the detachable battery 30 is covered by the second housing portion 74, and the upper end of the detachable battery 30 is covered by the third housing portion 76.

[0065] When the user pivots the operating lever 104 of the second battery receiving portion 82 to the locking position, the right second link member 98 and the right wire harness 132 are lifted. The right second link member 98, which has been lifted, passes through the second insertion opening 102 and enters the second battery receiving portion 82 (see Fig. 9). When the right second connecting element 98 reaches the highest position, the connecting pin 98a engages with the first connecting element 32. At the same time, the two locking elements 106 are pivoted about the second pivot shafts 126 and rest against the upper surface of the detachable battery 30 (see Fig. 10). Consequently, the detachable battery 30 is prevented from separating from the second battery receiving portion 82.

[0066] The distal end of the terminal pin 96a of the left second connecting member 96, which is located at the highest position, and the distal end of the terminal pin 98a of the right second connecting member 98, which is located at the highest position, form the second imaginary line L2. As described above, the entire electrical component 86 is arranged in the area 140 sandwiched between the first imaginary line L1 and the second imaginary line L2. That is, the entire electrical component 86 is arranged within the area 140 formed between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99.

[0067] When any type of element is installed in the operating area AR1 of the left movable body 97, the left wire harness support portion 92, the left second connecting member 96, or the left wire harness 130 may interfere with the element, and the left movable body 97 may be unable to move. The same applies to the operating area AR2 of the right movable body 99. In the related art, to prevent this situation, an area between an operating area of ​​one of a plurality of movable bodies and an operating area of ​​the other of the movable bodies is set as a dead space. That is, the electrical component is arranged in a space different from the area. Therefore, it is necessary to secure a large space within the battery accommodation device. For this reason, the degree of freedom in designing the elements and the like is reduced.Furthermore, it is difficult to reduce the size of the battery holder.

[0068] In contrast, in the present embodiment, the electrical component 86 is arranged at a position where it does not interfere with the left second connecting member 96, the left wire harness support portion 92, the left wire harness 130, the right second connecting member 98, the right wire harness support portion 94, or the right wire harness 132 moving. Specifically, the electrical component 86 is arranged in the area 140 formed between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99. Consequently, the area 140, which is the space within the battery housing device 20 and is located between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99, can be effectively utilized.Therefore, it is possible to arrange any type of element, such as the housing holder 84, in a different space in the battery accommodation device 20. Consequently, the degree of freedom in the design of the elements and the like is improved. Furthermore, since the area 140 between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99 is not a dead space, the size of the battery accommodation device 20 can be reduced.

[0069] The lower portion of the step-down regulator 164 and the substantially central portion of the pre-charge relay 162 in the up-down direction are arranged along the third imaginary line L3 in the area 140 between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99. The upper portions of the step-down regulator 164 and the pre-charge relay 162 are arranged along the fourth imaginary line L4 in the area 140 between the operating area AR1 of the left movable body 97 and the operating area AR2 of the right movable body 99. Consequently, the space between the operating area AR1 of the left second connecting member 96 and the operating area AR2 of the right second connecting member 98 can be effectively utilized. Furthermore, the electrical component 86 is prevented from interfering with the left second connecting member 96 and the right second connecting member 98.

[0070] After the detachable batteries 30 are accommodated in the first battery accommodating area 80 and the second battery accommodating area 82, respectively, and the operating levers 104 are set to the locking position, the user closes the cover member 58. The user then hooks the locking portion onto the hook portion. Thus, the cover member 58 is held in the closed state. It should be noted that when the cover member 58 is closed in a state in which the operating lever 104 is in the unlocking position, the operating lever 104 interferes with the cover member 58. Therefore, the cover member 58 cannot be completely closed (see Fig. 4). Consequently, the user can recognize that the operating lever 104 is in the unlock position.

[0071] It is assumed that the battery housing device 20 is wetted by rainwater, dirty water, or the like while the hydraulic mini excavator 10 is in use. A gap between the housing body 62 and the cover member 58 is sealed by a sealing member. However, there is a concern that water may enter the housing 50 due to wear or the like of the sealing member. Furthermore, in a case where the detachable battery 30 is replaced under rainy weather conditions, there is a concern that rainwater may enter the housing 50.

[0072] In the present embodiment, the upper portions of the first battery accommodating portion 80 and the second battery accommodating portion 82 are formed by the third housing portion 76. Specifically, the partition wall portion 79 of the third housing portion 76 prevents water from entering the interior of the housing 50 (specifically, the electrical component accommodating portion 87). Therefore, the electrical component 86 and the like are prevented from being wetted with water.

[0073] Since the remaining capacity (state of charge) of the detachable battery 30 is reduced by the operation of the hydraulic mini-excavator 10, recharging is required. Therefore, after stopping the hydraulic mini-excavator 10, the user releases the locking portion from the hook portion to open the cover member 58. Thereafter, the user pulls the detachable battery 30 out of the battery receiving device 20. In a case where the detachable battery 30 is pulled out of the first battery receiving portion 80, the operating lever 104 is pivoted toward the unlocking position in a manner opposite to that described above. Accordingly, as shown in Fig. 7, the left second connecting element 96 and the left wiring harness 130 are lowered. At the same time, as shown in Fig.8, the two locking elements 106 are pivoted and separated from the upper surface of the detachable battery 30. In this state, the user grasps the rod-shaped portion 36 of the detachable battery 30 and pulls the detachable battery 30 upward from the first battery receiving portion 80.

[0074] Similarly, in a case where the detachable battery 30 is pulled out from the second battery receiving portion 82, the operating lever 104 is pivoted toward the unlocking position. Accordingly, the right second link member 98 and the right wire harness 132 are lowered. At the same time, the two locking members 106 are pivoted and separated from the upper surface of the detachable battery 30. In this state, the user grasps the rod-shaped portion 36 of the detachable battery 30 and pulls the detachable battery 30 upward from the second battery receiving portion 82. The detachable battery 30 is then received in a charging device and charged.

[0075] The user removes the charged removable battery 30 from the charging device. The user then places the removable battery into the battery receiving device 20 in the same manner as described above.

[0076] As described above, the present embodiment discloses the battery receiving device (20) comprising the housing (50), wherein the battery receiving sections (80, 82) and the electrical component receiving section (87) are formed in the interior of the housing, and wherein the plurality of detachable batteries (30) are respectively insertably and removably received in the battery receiving sections, the battery receiving device comprising: the plurality of second connecting elements (96, 98) which respectively engage with the first connecting element (32) of the plurality of detachable batteries received in the battery receiving sections when the second connecting elements enter the interiors of the battery receiving sections, and which respectively separate from the first connecting elements when the second connecting elements retract from the interiors of the battery receiving sections;the plurality of movable bodies (97, 99), each comprising the plurality of second connecting elements and moving in a direction toward or away from the battery accommodating sections; and the electrical component (86) accommodated in the electrical component accommodating section, wherein at least a portion of the electrical component is arranged in the area (140) enclosed between the first imaginary line (L1) and the second imaginary line (L2), wherein the first imaginary line connects one end of the operating range (AR1) of one movable body (97) among the plurality of movable bodies and one end of the operating range (AR2) of another movable body (99) among the plurality of movable bodies, and wherein the second imaginary line connects another end of the operating range of the one movable body and another end of the operating range of the other movable body.

[0077] According to this configuration, the area is effectively used as a space for accommodating the electrical component. Therefore, it is not necessary to form the electrical component accommodating section separate from the area. This allows elements and the like that are different from the electrical component to be arranged in the different space. Therefore, the degree of freedom in the design of the elements and the like is improved. Furthermore, since the area is not a dead space, the size of the battery accommodating device can be reduced.

[0078] The range is, for example, a range between a line connecting the end portions of the movable bodies farthest from the battery receiving device when the movable bodies have moved to positions farthest from the battery receiving device and a line connecting the distal ends of the second connecting members when the movable bodies have moved to positions closest to the battery receiving device.Specifically, the present embodiment discloses the battery accommodating device, wherein the first imaginary line is an imaginary line passing through the end portions of the one movable body and the other movable body that are farthest from the battery accommodating portions when the one movable body and the other movable body are farthest from the battery accommodating portions, and the second imaginary line is an imaginary line passing through the distal end of the second link member of the one movable body and the distal end of the second link member of the other movable body when the second link member of the one movable body and the second link member of the other movable body have entered the battery accommodating portions to the maximum extent.

[0079] The present embodiment discloses the battery accommodation device, which further comprises the plurality of wire harnesses (130, 132) each connected to the plurality of second connecting members and arranged outside the battery accommodation sections, and the plurality of wire harness support sections (92, 94) each supporting the plurality of wire harnesses, wherein the plurality of movable bodies each comprise the plurality of wire harness support sections, and the first imaginary line is an imaginary line passing through the end portions of the plurality of wire harness support sections, the end portions being farthest from the battery accommodation sections.

[0080] In this case, it is possible to more effectively utilize the area including the areas where the wire harness support sections move, while avoiding the situation where the electrical component interferes with the wire harnesses. Therefore, it is possible to ensure the degree of freedom in the design of the elements and the like in the battery support device and reduce the size of the battery support device while making the wire harnesses movable.

[0081] The present embodiment discloses the battery accommodating device, wherein at least a part of the electrical component is arranged on the third imaginary line (L3) connecting the end portions of the plurality of second connecting members farthest from the battery accommodating portions in a state in which the plurality of second connecting members have retreated to the maximum extent from the battery accommodating portions.

[0082] In this case, the space between the plurality of second connecting elements can be effectively utilized. Therefore, the degree of freedom in the design of the elements and the like in the battery holding device is further improved. Furthermore, the size of the battery holding device can be further reduced.

[0083] The present embodiment discloses the battery accommodating device, wherein at least a portion of the electrical component is arranged on the fourth imaginary line (L4) connecting the end portions of the plurality of second connecting members farthest from the battery accommodating portions in a state in which the plurality of second connecting members have entered the battery accommodating portions to the maximum extent.

[0084] According to this configuration, the space between the plurality of second connecting elements can be effectively utilized. Therefore, the degree of freedom in the design of the elements and the like in the battery receiving device is further improved. Furthermore, the size of the battery receiving device can be further reduced.

[0085] The present embodiment discloses the battery accommodating device, wherein the battery accommodating portions are configured to accommodate two detachable batteries among the plurality of detachable batteries in such a manner that the two detachable batteries are arranged in parallel along the horizontal direction, and among the plurality of second connecting members, two second connecting members that engage with or disengage from the first connecting members of the two detachable batteries are provided so as to be close to one end side in the horizontal direction and another end side in the horizontal direction, respectively, in the battery accommodating portions.

[0086] According to this configuration, the two second connecting elements are largely separated from each other. Accordingly, the area is formed as a large space. Therefore, the electrical component can be easily arranged within the area.

[0087] The present embodiment discloses the battery receiving device, wherein the battery receiving sections comprise the first battery receiving section (80) and the second battery receiving section (82), and the first battery receiving section and the second battery receiving section are configured to receive one detachable battery and another detachable battery, respectively, among the plurality of detachable batteries, wherein the wire harnesses (130, 132) are connected, respectively, among the plurality of second connecting elements, to the second connecting element (96) which enters and retracts from the first battery receiving section and to the second connecting element (98) which enters and retracts from the second battery receiving section, wherein the battery receiving device further comprises the wire harness support sections (92, 94) which support the wire harnesses, respectively.and within the battery receiving device, the first battery receiving portion and the second battery receiving portion are arranged at positions that are line-symmetrical to each other, and the wire harness supporting portion that supports the wire harness connected to the second connecting member that enters and retracts from the first battery receiving portion, and the wire harness supporting portion that supports the wire harness connected to the second connecting member that enters and retracts from the second battery receiving portion, are arranged at positions that are line-symmetrical to each other.

[0088] In this case, the distance from the second connecting member to one of the wire harness support portions in the first battery accommodating portion is substantially equal to the distance from the second connecting member to the other wire harness support portion in the second battery accommodating portion. Accordingly, the lengths of the wire harnesses provided in the second connecting members can be made uniform to the wire harness support portions. Therefore, the versatility of the wire harnesses is improved. In addition, the lengths of the wire harnesses can be minimized.

[0089] The present embodiment discloses the battery receiving device, wherein the battery receiving sections comprise the first battery receiving section (80) and the second battery receiving section (82), and the first battery receiving section and the second battery receiving section are configured to receive one detachable battery and another detachable battery, respectively, among the plurality of detachable batteries. The first battery receiving section comprises the first housing section (72) covering one end side of the one detachable battery when the one detachable battery is received in the first battery receiving section. The second battery receiving section comprises the second housing section (74) covering one end side of the other detachable battery when the other detachable battery is received in the second battery receiving section.wherein the first battery receiving portion and the second battery receiving portion share the third housing portion (76) which spans the first housing portion and the second housing portion, and wherein the third housing portion covers another end side of the one detachable battery and another end side of the other detachable battery when the one detachable battery is received in the first battery receiving portion and the other detachable battery is received in the second battery receiving portion.

[0090] In particular, the third housing section prevents the electrical component from becoming wet with water.

[0091] The present embodiment discloses the battery housing device, wherein the first housing portion and the second housing portion have the same shape.

[0092] In this case, the first housing section and the second housing section can be manufactured using the same molding device. This eliminates the need to prepare separate molding devices. Therefore, the manufacturing cost of the battery housing device can be reduced.

[0093] The present embodiment discloses the battery receiving device, wherein the third housing portion includes the partition wall portion (79) defining the first battery receiving portion and the second battery receiving portion, and the partition wall portion is disposed above the electrical component and covers at least a portion of the electrical component.

[0094] In this case, the partition section protects the electrical component from water or similar contaminants. This means that the partition section prevents the electrical component from getting wet with water.

[0095] The present embodiment discloses the battery housing device wherein the partition wall portion is arranged at the upper end of the interior space of the housing.

[0096] The partition wall section provided in such a position prevents water from entering the interior of the housing. Therefore, the detachable batteries, the second connecting elements, and the like are prevented from becoming wet with water.

[0097] The present embodiment discloses the battery housing device, which further comprises the fixing member (70) provided in the electrical component housing portion, wherein the electrical component is positioned and fixed in the electrical component housing portion by means of the fixing member, and the fixing member is provided in the region formed between the operating portions of the plurality of second connecting members.

[0098] According to this configuration, after the electrical component is attached to the fixing member, the fixing member is positioned and fixed within the housing, whereby the electrical component can be easily positioned and fixed in the electrical component receiving portion.

[0099] The present invention is not limited to the above disclosure, and various modifications are possible without departing from the essence and spirit of the present invention.

[0100] For example, a single battery receiving portion may be provided without being divided into the first battery receiving portion 80 and the second battery receiving portion 82. In this case, for example, two detachable batteries 30 are accommodated in the single battery receiving portion.

[0101] In the embodiment described above, the battery receiving device 20 is illustrated accommodating two removable batteries 30. However, the battery receiving device may accommodate removable batteries 30 in an integer number that is a multiple of 2. For example, a third battery receiving section and a fourth battery receiving section may be provided to accommodate four removable batteries 30. In this case, the third battery receiving section and the fourth battery receiving section are preferably in a line-symmetrical positional relationship, similar to the first battery receiving section 80 and the second battery receiving section 82.

[0102] In this case, the number of second connecting elements provided in the battery receiving device is the same as the number of first connecting elements 32 of the detachable batteries 30. The area 140 is an area enclosed between two imaginary lines each connecting one end and the other end of the operating area of ​​one second connecting element and the operating area of ​​the remaining second connecting element in the two second connecting elements facing each other.

[0103] The object to which the battery receiving device 20 is attached is not limited to the mini hydraulic excavator 10. Other specific examples of the object for attachment include a three-wheeled automobile, a micro-mobility device, and the like. List of reference symbols 10 hydraulic mini excavators 20 Battery holder 24 engine 26 housing holders 30 removable battery 32 first connecting element 34 Handle section 50 housings 62 housing body 70 bracket 72 first housing section 74 second housing section 76 third housing section 78a, 78b opening 79 Partition section 80 first battery receiving section 82 second battery receiving section 84 housing holders 86 electrical components 87 Receptacle for an electrical component 92 left wiring harness support section 94 right wiring harness support section 96 left second connecting element 98 right second connecting element 100 first insertion opening 102 second insertion opening 104 operating levers 106 Locking element 110 Connecting element movement mechanism 130 left wiring harness 132 right wiring harness 140 area AR1, AR2 operating area L1 first imaginary line L2 second imaginary line L3 third imaginary line L4 fourth imaginary line QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] WO 2019 / 064556 A1 [0002, 0032]

Claims

[1] A battery receiving device (20) comprising a housing (50), wherein battery receiving sections (80, 82) and an electrical component receiving section (87) are formed in an interior of the housing, and wherein a plurality of detachable batteries (30) are respectively insertably and removably received in the battery receiving sections, the battery receiving device comprising: a plurality of second connecting elements (96, 98) which respectively engage with first connecting elements (32) of the plurality of detachable batteries which are received in the battery receiving sections when the second connecting elements enter interiors of the battery receiving sections, and which respectively separate from the first connecting elements when the second connecting elements retract from the interiors of the battery receiving sections; a plurality of movable bodies (97, 99) each comprising the plurality of second connecting elements and moving in a direction toward or away from the battery receiving sections; and an electrical component (86) received in the electrical component receiving section, wherein at least a portion of the electrical component is arranged in an area (140) enclosed between a first imaginary line (L1) and a second imaginary line (L2), the first imaginary line defining one end of an operating area (AR1) of one movable body (97) among the plurality of movable bodies and one end of an operating area (AR2) of another movable body (99) among the plurality of movable bodies, and wherein the second imaginary line connects another end of the operating range of the one movable body and another end of the operating range of the other movable body. [2] Battery receiving device according to claim 1, wherein the first imaginary line is an imaginary line passing through end portions of one movable body and the other movable body which are farthest from the battery receiving portions when one movable body and the other movable body are arranged farthest from the battery receiving portions, and the second imaginary line is an imaginary line passing through a distal end of the second linking member of one movable body and a distal end of the second linking member of the other movable body when the second linking member of one movable body and the second linking member of the other movable body have entered the battery accommodating portions to a maximum extent. [3] The battery receiving device according to claim 2, further comprising: a plurality of wire harnesses (130, 132) each connected to the plurality of second connecting elements and arranged outside the battery receiving sections, and a plurality of wire harness support sections (92, 94) each supporting the plurality of wire harnesses, wherein the plurality of movable bodies each comprise the plurality of wire harness supporting portions, and the first imaginary line is an imaginary line passing through end portions of the plurality of wire harness support portions, with the end sections furthest away from the battery receiving sections. [4] The battery accommodating device according to any one of claims 1 to 3, wherein at least a portion of the electrical component is arranged on a third imaginary line (L3) connecting end portions of the plurality of second connecting members that are farthest from the battery accommodating portions in a state in which the plurality of second connecting members have retreated to a maximum extent from the battery accommodating portions. [5] The battery accommodating device according to any one of claims 1 to 4, wherein at least a portion of the electrical component is arranged on a fourth imaginary line (L4) connecting end portions of the plurality of second connecting members farthest from the battery accommodating portions in a state in which the plurality of second connecting members have entered the battery accommodating portions to a maximum extent. [6] Battery receiving device according to one of claims 1 to 5, wherein the battery receiving sections are adapted to receive two detachable batteries among the plurality of detachable batteries in such a manner that the two detachable batteries are arranged in parallel along a horizontal direction, and among the plurality of second connecting members, two second connecting members which engage with or disengage from the first connecting members of the two detachable batteries are provided such that they are close to one end side in the horizontal direction and another end side in the horizontal direction, respectively, in the battery accommodating portions. [7] Battery receiving device according to one of claims 1 to 6, wherein the battery receiving sections comprise a first battery receiving section (80) and a second battery receiving section (82), and the first battery receiving section and the second battery receiving section are adapted to receive one detachable battery and another detachable battery, respectively, among the plurality of detachable batteries, Cable harnesses (130, 132) are each connected among the plurality of second connecting elements to a second connecting element (96) which enters and retracts from the first battery receiving section and a second connecting element (98) which enters and retracts from the second battery receiving section, the battery receiving device further comprises wire harness supporting sections (92, 94) which respectively support the wire harnesses, and within the battery receiving device, the first battery receiving portion and the second battery receiving portion are arranged at positions that are line-symmetrical to each other, and the wire harness supporting portion that supports the wire harness connected to the second connecting member that enters and withdraws from the first battery receiving portion, and the wire harness supporting portion that supports the wire harness connected to the second connecting member that enters and withdraws from the second battery receiving portion are arranged at positions that are line-symmetrical to each other. [8] Battery receiving device according to one of claims 1 to 7, wherein the battery receiving sections comprise a first battery receiving section (80) and a second battery receiving section (82), and the first battery receiving section and the second battery receiving section are adapted to receive one removable battery and another removable battery, respectively, among the plurality of removable batteries, the first battery receiving portion comprises a first housing portion (72) which covers one end side of the one detachable battery when the one detachable battery is received in the first battery receiving portion, the second battery receiving portion comprises a second housing portion (74) which covers one end side of the other detachable battery when the other detachable battery is received in the second battery receiving portion, the first battery receiving portion and the second battery receiving portion share a third housing portion (76) which spans the first housing portion and the second housing portion, and the third housing portion covers another end side of the one detachable battery and another end side of the other detachable battery when the one detachable battery is accommodated in the first battery accommodating portion and the other detachable battery is accommodated in the second battery accommodating portion. [9] The battery housing device according to claim 8, wherein the first housing portion and the second housing portion have a same shape. [10] The battery housing device according to claim 8 or 9, wherein the third housing portion comprises a partition wall portion (79) defining the first battery housing portion and the second battery housing portion, and the partition wall portion is disposed above the electrical component and covers at least a portion of the electrical component. [11] The battery housing device according to claim 10, wherein the partition wall portion is disposed at an upper end of the interior space of the housing. [12] A battery receiving device according to any one of claims 1 to 11, further comprising a fixing member (70) provided in the electrical component receiving portion, wherein the electrical component is positioned and fixed in the electrical component receiving portion by means of the fixing member, and the fastening element is provided in the region formed between the operating regions of the plurality of second connecting elements.

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