Charging system for mechanical parking facility

Abstract

To provide a charging system for a mechanical parking facility capable of suppressing the occurrence of a situation that impairs safety caused by a charging cable.SOLUTION: A charging system for a mechanical parking facility includes a charging cable 22 connected to a charging device 21, and a winding device 31 for winding the charging cable 22, wherein the winding device 31 is mounted on a pallet 11 for parking. The winding device 31 constantly applies tension to the charging cable 22 in a winding direction regardless of whether or not a charging connector 25 at a distal end of the charging cable 22 is set in a standby receiving portion 37 during non-charging, and prevents the charging cable 22 from being grounded to the pallet 11 by the constant tension.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a charging system for a mechanical parking facility. [Background technology]

[0002] Patent Documents 1 and 2 propose charging systems for mechanical parking facilities that include a pallet on which a vehicle can be mounted and a charging connector provided on the pallet that can be connected to the vehicle-side power supply port of an on-board battery, allowing the vehicle to be charged by connecting it to a power source via the charging connector while parked on the pallet.The applicant has also obtained a patent for a long-shaped storage body that winds up and stores a charging cable connected to a charging device so that it can be pulled out, as shown in Patent Document 3.

[0003] However, even if the long-item storage device of Patent Document 3 is applied to mechanical parking equipment, if the charging cable is pulled out and touches the pallet, sticks out, or gets caught on other objects, causing the pallet to move and move, the charging cable may interfere with the normal movement of the pallet or the charging connector may become detached from the vehicle-side power supply port, thereby compromising safety. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-220904 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-036703 [Patent Document 3] Patent No. 6240464 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem to be solved by the present invention is to provide a charging system for a mechanical parking facility that can prevent the occurrence of situations in which safety is compromised due to the charging cable. [Means for solving the problem]

[0006] The present invention provides a charging system for a mechanical parking facility, comprising a charging cable connected to a charging device and a winding device for winding the charging cable, the winding device being mounted on a parking pallet. The winding device constantly applies tension to the charging cable in the winding direction, regardless of whether the charging connector at the end of the charging cable is set in a standby receiving section when not charging, and the constant tension is configured to prevent the charging cable from grounding to the pallet. When implementing the present invention, the present invention can be configured so that an interlock release signal is issued to the mechanical parking lot control unit under two AND conditions: that the charging cable is wound around the winding device and that the charging connector is set in the waiting receiving section. The charging device may be configured to receive an interlock release signal from the parking lot control unit when the charging connector is connected to the vehicle's power supply port. The charging device may be configured as a separate unit in separate housings, and may be mounted separately on the rear side and on the left and right sides of the pallet. The winding device may have a pull-out hole for the charging cable below the standby receiving section, and when the charging connector is set in the standby receiving section, the constant tension is applied to the charging cable, thereby encouraging the charging cable between the standby receiving section and the pull-out hole to become approximately straight. Furthermore, the winding device may be provided with an indicator light to allow the user to check the normal status, interlock status, and device abnormality, and the user can be configured to know that the charging operation is being performed correctly and that the charging process has been completed correctly by checking the indicator light. [Effects of the Invention]

[0007] The present invention provides a charging system for a mechanical parking facility that can prevent the occurrence of situations in which safety is compromised due to the charging cable. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a pallet of a mechanical parking facility according to an embodiment of the present invention; [Figure 2] FIG. 2 is a diagram illustrating the control system of the charging system for the mechanical parking facility. [Figure 3] FIG. 2 is an explanatory diagram of the internal structure of the winding device of the mechanical parking facility. [Figure 4] 10A and 10B are explanatory diagrams showing the state of the charging cable in the standby position of the mechanical parking facility, where (A) shows the proper state and (B) shows the improper state. [Figure 5] An explanatory diagram of the operating state of the charging system for the mechanical parking facility of the same mechanical parking facility, where (A) shows a state in which condition a of the first condition is met but condition b is not met, (B) shows a state in which condition b of the first condition is met but condition a is not met, (C) shows a state in which both conditions a and b of the first condition are met, and (D) shows a case in which the second condition is met. [Figure 6] 10(A) to 10(D) are explanatory diagrams showing examples of the arrangement of the charging device and the winding device of the mechanical parking facility. [Figure 7] 1A is a perspective view showing the configuration of the winding device of the mechanical parking facility, and FIG. 1B is a perspective view of the winding device from another direction. [Figure 8] A flow chart for unlocking the interlock of the same mechanical parking facility. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. (Overview of mechanical parking facilities)

[0010] The mechanical parking facility of this embodiment comprises a pallet 11 on which parked vehicles can be mounted, and a mechanical parking control unit 14 (see Figure 2) that controls the movement and stopping of the pallet 11. Under the control of a vehicle-side power supply port (not shown), the pallet 11 is moved and stopped in various directions, up and down, left and right, forward and backward, using a specified power source, thereby enabling parking of multiple vehicles within a limited land area.

[0011] With the spread of hybrid and electric vehicles, there is a demand for a safe and efficient charging system for mechanical parking facilities for onboard batteries of vehicles stopped (parked) on pallets 11, and this embodiment proposes a charging system for mechanical parking facilities that can achieve this.

[0012] The pallet 11 in this embodiment can be any pallet 11 used in general mechanical parking facilities, but Figure 1 shows an example in which the pallet 11 has a floor 12 on which a vehicle is parked, and side frames 13 that are one step higher than the floor surface of the floor 12 are provided on both the left and right sides of the floor 12. The length in the left-right direction of the side frames 13 (edge ​​width) is set appropriately. The height of the side frames 13 is set, for example, between 100 mm and 200 mm, and preferably 150 mm.

[0013] A charging device 21 connected to an external power source of the mechanical parking facility and a winding device 31 that stores a charging cable 22 that supplies electricity from the charging device 21 to the vehicle are arranged on the pallet 11. The charging device 21 does not necessarily have to be mounted on the pallet 11, but may be arranged in an appropriate position, such as above the pallet 11, that allows electricity to be supplied to vehicles parked on the pallet 11. (Regarding charging device 21)

[0014] Charging device 21 includes a charger main body 23 that can supply electricity from an external power source to charging cable 22 at an appropriate voltage and current for charging, and a charger control unit that controls it; however, hereinafter, charger main body 23 and charger control unit will not be distinguished from each other and will be described as charger main body 23. In this example, charging cable 22 is implemented as a continuous cord that runs from charger main body 23 to the vehicle via winding device 31 without passing through a rotating electrical contact part or the like, and charging connector 25 provided at the tip of charging cable 22 is connected to a vehicle-side power supply port (not shown), thereby connecting the external power source to the vehicle's onboard battery and charging the onboard battery. (Regarding the winding device 31)

[0015] The winding device 31 includes a casing 36 installed on the side frame 13 of the pallet 11. The casing 36 contains the winding device 31 that winds the charging cable 22 and a biasing unit 38. The user pulls out the charging cable 22 against the tension constantly applied by the biasing unit 38, and connects the charging connector 25 at the end of the cable to a vehicle-side power supply port (not shown) of the vehicle's onboard battery to charge the cable. When charging is complete, the user simply returns the charging connector 25 to the standby receptacle 37, which is a standby position on the casing 36, and the biasing unit 38 winds the pulled-out charging cable 22 into the casing 36. (Charging cable 22)

[0016] Charging cable 22 is a charging cord in which a conductive member is covered with an insulator. In this example, charging cable 22 is provided with a charging connector 25 at its tip. Charging connector 25 is connected to a vehicle-side power supply port (not shown) when charging the vehicle's onboard battery. (Casing 36)

[0017] The casing 36 is a housing installed on the side frame 13, and has a pull-out hole 39 for the charging cable 22 on its side (the lower front side in the example of FIG. 1). The position of the pull-out hole 39 may be set as appropriate, but it is desirable to set it in a position where the charging cable 22 pulled out from the pull-out hole 39 does not come into contact with the floor 12 of the pallet 11 or the side frame 13. The length of the casing 36 in the left-right direction is set to, for example, 100 mm or less, and preferably 60 mm, so that the casing 36 can be installed on the side frame 13. The height of the casing 36 is set to, for example, 500 mm or less, and preferably 250 mm. (winding device 31)

[0018] In this example, as shown in Fig. 3, the winding device 31 has two guide elements, a first guide element 41 and a second guide element 42. The charging cable 22 is wound around the first guide element 41 and the second guide element 42, making one or more turns, and the charging cable 22 is wound and unwound by moving the first guide element 41 and the second guide element 42 toward and away from each other. The first guide element 41 and the second guide element 42 are moved toward and away from each other by moving at least one of them, but in this example, the first guide element 41 is fixed and the second guide element 42 is moved toward and away from each other (moving it left and right in the figure). The unwound charging cable 22 can be pulled out from the winding device 31 through a pull-out hole 39.

[0019] Many conventional cord reels separate a pull-out cord from a power supply cord that supplies power to the pull-out cord and electrically connect the two cords via a rotating electrical contact. While a configuration including such a rotating electrical contact may be used, the winding device 31 according to this embodiment advantageously allows the charging cable 22 to run continuously from the charger main body 23 to the charging connector 25 without the need for an electrical contact, thereby reducing the possibility of electrical leakage or short circuits. Specifically, the charging cable 22 pulled out from the charger main body 23 passes through the inside of the side frame 13 of the pallet 11 and enters the casing 36 from the bottom. The charging cable 22 then travels along the first guide element 41 to the second guide element 42, then turns back at the second guide element 42 and returns to the first guide element 41. If one round trip is sufficient, the charging cable 22 returns to the first guide element 41 or is guided by another guide element and is then led out of the pull-out hole 39. When making two or more round trips, the charging cable 22 is guided from the first guide element 41 by the second guide element 42, then by the second guide element 42, and then by the first guide element 41 again, either returning to the first guide element 41 or being guided by another guide element and being led out of the lead-out hole 39. In this case, when the first guide element 41 and the second guide element 42 are implemented as pulleys as shown in FIG. 3, it is desirable that they are circular reel-shaped and have grooves formed therein to receive each revolution of the charging cable 22. The first guide element 41 and the second guide element 42 are not pulleys, and can be implemented in various forms that can feed the charging cable 22. For example, the first guide element 41 and the second guide element 42 may be non-rotatable elements with low frictional resistance, or may be a combination of multiple feed rollers. (Guide mechanism)

[0020] The support shaft of the first guide element 41 is supported by the casing 36, while the second guide element 42 moves while being guided by a guide mechanism. The guide mechanism includes a slide portion 43 and a guide portion 44, and the support shaft of the second guide element 42 is supported by the slide portion 43, and the slide portion 43 moves while being guided by the guide portion 44. The movement direction of the second guide element 42 (the extension direction of the guide portion 44) can be changed in various directions, such as up and down, front and back, left and right, and diagonally.

[0021] The slide portion 43 is biased so as to move upward by the biasing portion 38. As the biasing portion 38, a spring such as a constant force spring, or other biasing means such as a weight may be used instead of or in combination with the biasing portion 38.

[0022] Before the charging cable 22 is unwound, the sliding portion 43 and the second guide element 42 are located away from the first guide element 41 (at the right end in FIG. 3 ). When the user pulls on the tip of the charging cable 22 protruding from the draw-out hole 39 of the casing 36, the sliding portion 43 and the second guide element 42 move against the biasing portion 38 and approach the first guide element 41, thereby drawing out the charging cable 22. When this pulling is stopped and the charging cable 22 is set in a free state, the tension of the biasing portion 38 causes the sliding portion 43 and the second guide element 42 to move away from the first guide element 41, and the charging cable 22 is wound up. Although not shown, shock absorbers such as coil springs may be provided at the moving ends of the slide portion 43 (the left and right ends in the drawing). (Regarding the standby receiving unit 37)

[0023] In this example, standby receiving portion 37, which is a standby position for charging connector 25, is provided at the top of casing 36. Standby receiving portion 37 is tubular and receives the insertion portion at the tip of charging connector 25, and is provided with a locking portion (not shown) for charging connector 25 as necessary.

[0024] This locking portion can be configured to engage with a latch (not shown) protruding from the upper tip of charging connector 25, and the user can simply insert the tip of charging connector 25 into waiting receptacle 37 in the same manner as connecting to a vehicle for charging, causing the latch to engage with the locking portion. Standby receptacle 37 is provided with connector detection sensor 32, which detects that charging connector 25 is properly inserted. When pulling out charging cable 22 for charging, the user pulls a lever on charging connector 25, for example, to release the latch from the locking portion, pulls charging connector 25 out of waiting receptacle 37, and continues to pay out charging cable 22 until charging connector 25 reaches a vehicle-side power supply port (not shown) of the vehicle. (Regarding constant tension)

[0025] As described above, charging cable 22 is constantly tensioned in the winding direction by biasing portion 38. This action will be explained for each of the four states: when charging connector 25 is in the standby position, when charging cable 22 is pulled out, when charging connector 25 is inserted into a vehicle-side power supply port (not shown), and when charging cable 22 is wound up. (Status of charging cable 22 in standby position)

[0026] The charging cable 22 is constantly tensioned in the unwinding direction by the biasing portion 38. This tension is applied not only when the charging cable 22 is being unwound but also when the charging cable 22 is completely set in the standby receptacle 37, which is the standby position. As a result, the charging cable 22 extends in a substantially straight line from the charging connector 25 set in the upper standby receptacle 37 to the outlet hole 39 below. This "substantially straight" does not mean a straight line in mathematical terms, but rather means that the charging cable 22 extends without sagging, without contacting the pallet 11, or without protruding from the pallet 11, as shown in FIG. 4(B). The length of the charging cable 22 and the maximum separation distance between the two guide elements 41, 42 (i.e., the maximum winding amount) are set so that the second guide element 42 is separated from the first guide element 41 so that the charging cable 22 can be wound to a length that does not sag when the charging connector 25 is set in the standby receptacle 37. Of course, the winding mechanism of the winding device 31 may be configured to be able to wind up even shorter, but when the charging connector 25 is set in the standby position, it is not possible to wind up any further due to the length of the charging cable 22, so it is set to the maximum separation distance (i.e., the maximum winding amount). A winding device detection sensor 33 for detecting that the second guide piece 42 or the sliding portion 43 has reached this maximum separation distance is provided on the guide portion 44 or the casing 36. (Pull out charging cable 22)

[0027] When a user pulls on the tip end of charging cable 22, charging cable 22 is pulled out while receiving tension in the winding direction. At this time, as described above, second guide element 42 and sliding portion 43 move toward first guide element 41 against biasing portion 38. Because tension is constantly applied in this way, even when a user pulls out charging cable 22 for charging, charging cable 22 is prevented from coming into contact with pallet 11 or other objects more than necessary. (Setting into the vehicle's power supply port)

[0028] When charging, charging connector 25 is set in a vehicle-side power feed port (not shown). Generally, simply by properly inserting the tip of charging connector 25 into the vehicle-side power feed port (not shown), a latch (not shown) of charging connector 25 engages with a locking portion (not shown) of the vehicle-side power feed port (not shown), and the setting is completed. Because tension is always applied to charging cable 22, even if the user pulls out an excess of charging cable 22, charging cable 22 will not come into contact with pallet 11 but will remain suspended in the air.

[0029] Furthermore, by setting the length of charging cable 22 to a length that allows it to hang in the air when the vehicle is stopped in an appropriate position such as at a car stop, it is possible to prevent inappropriate situations such as charging cable 22 getting caught on something or sticking out of pallet 11 when charging connector 25 is set in the vehicle-side power supply port (not shown). (Charging cable 22 is entangled)

[0030] When charging is complete, the user removes the vehicle-side power supply port (not shown) from charging connector 25 and returns it to the standby receiving portion 37 of casing 36 of rewinding device 31. At this time, because tension is constantly applied to charging cable 22, charging cable 22 is automatically rewound onto rewinding device 31. (Control system configuration)

[0031] Next, the configuration of the control system of the charging system for a mechanical parking facility according to this embodiment will be described mainly with reference to FIG. The charger main body 23 and the external power source 20 are electrically connected by an appropriate power cable, etc. The charger main body 23 and the charging connector 25 are connected by a series of charging cables 22. The charger main body 23 and the mechanical parking lot control unit 14 are connected by a communication cable. The charger main body 23 and the winding device 31 are connected by a communication line capable of transmitting contact signals. The communication cable or line may be of various communication types, and may be wired or wireless.

[0032] More specifically, the winding device 31 is provided with an indicator light 40 (see FIG. 7) such as an LED so that the user can check the normal state, interlock state, and device abnormality. A control signal is sent from the charger main body 23 to the indicator light 40 to prompt the display by a selected color or the like. By checking the indicator lights 40, the user can confirm that the charging operation is being performed correctly and that the charging process has been completed correctly. The position, size, and number of the indicator lights 40 can be modified as appropriate. In the example of FIG. 7, however, the indicator lights 40 are arranged in two locations, an upper portion (inside the waiting receiving section 37 in FIG. 7) and a lower portion, of the casing 36 in a front view viewed along the direction of vehicle entry so that the user can easily see them while getting on and off the vehicle. The indicator lights 40 in the lower portion of the casing 36 are arranged so as to be perpendicular to the pallet 11. Furthermore, the indicator lights 40 in the upper portion of the casing 36 are arranged so as to form an obtuse angle with the pallet 11. With this configuration, the indicator lights 40 can be easily seen when the user is standing near the reel device 31 or inserting or removing the charging connector 25. Furthermore, in a rear view (a front view viewed from the direction facing the direction of vehicle entry), the indicator lights 40 are further arranged at the top of the casing 36 so as to be perpendicular to the pallet 11. By arranging the indicator lights 40 not only on the front side (the side from which the vehicle enters the pallet 11) of the casing 36 but also on the back side (the side opposite to the side from which the vehicle enters the pallet 11), the indicator lights 40 can be seen from both the front and back sides of the casing 36, which makes it possible to install the retractor 31 upside down. If the retractor 31 can be installed upside down, the position of the retractor 31 can be selected so as to provide the shortest route from the retractor 31 to the vehicle-side power supply port, thereby improving safety and connectivity of the charging connector 25. (Connector detection sensor 32)

[0033] Connector detection sensor 32 detects whether charging connector 25 is properly set in standby receptacle 37. More specifically, connector detection sensor 32 can be implemented as a contact sensor such as a limit switch or a non-contact sensor such as a proximity sensor. Connector detection sensor 32 can be disposed at an appropriate position on charging connector 25, and when connector detection sensor 32 detects charging connector 25, a charging connector detection signal is issued from connector detection sensor 32 to charger main body 23. (winding device detection sensor 33)

[0034] Next, the rewinding device detection sensor 33 detects whether the charging cable 22 has been rewound around the rewinding device 31 to the maximum rewinding amount. More specifically, the connector detection sensor 32 can be implemented as a contact sensor such as a limit switch that can detect when the second guide element 42 reaches a position where the distance between the first guide element 41 and the second guide element 42 is the maximum separation distance (i.e., the maximum rewinding amount), or a non-contact sensor such as a proximity sensor. The rewinding device detection sensor 33 can be installed on the casing 36 or guide portion 44 of the rewinding device 31, and is disposed in an appropriate position that can detect when the second guide element 42 or the sliding portion 43 has reached the above-mentioned positions. When the rewinding device detection sensor 33 detects the second guide element 42 or the sliding portion 43, the rewinding device detection sensor 33 issues a cable rewinding detection signal to the charger main body 23. (Electrification detection sensor 34)

[0035] The power supply detection sensor 34 detects whether the charging connector 25 is in a power-on state, such as when the charging connector 25 is connected to a vehicle-side power port (not shown) and charging is being performed. More specifically, the power supply detection sensor 34 can be disposed at an appropriate position between the charger main body 23 and the charging connector 25, and the power supply detection sensor 34 causes the take-up device detection sensor 33 to issue a power supply signal to the charger main body 23.

[0036] Upon receiving these signals, the charger main body 23 issues an interlock release signal to the mechanical parking lot control unit 14 when either a first condition or a second condition set in advance is satisfied. (First condition)

[0037] The first condition is an AND condition that satisfies both the following conditions a and b. Condition a is that the emitted charging connector detection signal is received by charger main body 23. Condition b is that the issued cable winding detection signal is received by the charger main body 23. (Second condition)

[0038] The second condition is that the issued interlock release signal is received by the connector detection sensor 32. When either the first or second condition is met, the control device of the charger main body 23 issues an interlock release signal to the mechanical parking lot control unit 14. Upon receiving this interlock release signal, the mechanical parking lot control unit 14 satisfies other conditions for moving the pallet 11 (for example, the condition that it has detected that the operation button has been pressed by the operator), thereby allowing the movement of the pallet 11. (Operating state)

[0039] Specific operating states will be described with reference to FIGS. 5(A) shows a state in which condition a of the first condition described above is satisfied but condition b is not satisfied (when, in FIG. 8, S210 is Yes, S220 is No, and S230 is No). Specifically, this shows a state in which charging connector 25 is set in standby receptacle 37, a charging connector detection signal is emitted, and the charging connector detection signal is received by charger main body 23, but charging cable 22 has not been retracted by retraction device 31 to the maximum separation distance (i.e., the maximum retraction amount), and so a cable retraction detection signal has not been received by charger main body 23. In this state, an interlock release signal is not issued, and, for example, indicator light 40 emits red light to indicate an interlock state.

[0040] 5(B) shows a state in which, of the first condition described above, condition b is satisfied but condition a is not satisfied (when S210 is No and S230 is No in FIG. 8). Specifically, this shows a case in which charging cable 22 has been retracted by retraction device 31 to the maximum separation distance (i.e., the maximum retraction amount) and a cable retraction detection signal has been received by charger main body 23, but charging connector 25 is not set in standby receptacle 37 and a charging connector detection signal has not been received by charger main body 23. Even in this state, an interlock release signal is not issued and, for example, indicator light 40 emits red light indicating an interlock state.

[0041] 5(C) shows a state in which both conditions a and b of the first condition are satisfied (in FIG. 8, S210 is Yes and S220 is Yes). Specifically, this shows a state in which both the cable retraction detection signal and the energization signal are received by the charger main body 23. In this state, an interlock release signal is issued, and the indicator lamp 40, for example, emits yellow light.

[0042] FIG. 5(D) shows the case where the second condition is met (in FIG. 8, S210 is No and S230 is Yes, or S210 is Yes, S220 is No, and S230 is Yes). In this proper charging state, an interlock release signal is sent, and, for example, indicator light 40 lights up in green.

[0043] In this way, an interlock release signal is issued and the pallet 11 becomes movable only in two cases: when the charging connector 25 is set in the standby receiving section 37 and the charging cable 22 is properly wound up (Figure 5(C)), or when the charging connector 25 is properly set in the vehicle-side power supply port (not shown) of the vehicle on the pallet 11 (Figure 5(D)).This reduces the risk of the charging cable 22 being pulled out unnecessarily long from the winding device 31 when the pallet 11 is being moved, which could hinder the movement of the pallet 11 or cause an accident during movement. (separate housing)

[0044] Although the charging device 21 and the retracting device 31 may be housed in the same unit, it is preferable to configure them in separate housings so that they can be mounted separately on the left, right, front, and rear of the pallet 11, as shown in FIGS. 6(A) and 6(B). This allows them to be arranged on the left, right, front, and rear of the pallet 11 in accordance with the position of the vehicle's vehicle-side power supply port (not shown), as shown in FIGS. 6(C) and 6(D). Because the retracting device 31 (casing 36) having the charging connector 25 can be arranged near the vehicle's vehicle-side power supply port, the charging cable 22 from the charging device 21 to the casing 36 can be arranged on the back side of the pallet 11, for example, to prevent the charging cable 22 from becoming an obstacle. This prevents safety issues caused by the charging cable 22 from occurring.

[0045] In this case, it is preferable that the charging device 21 be located at a height that avoids interference with the vehicle, by being lower than the car stopper (not shown) on the floor 12 of the pallet 11 or lower than the distance between the floor 12 and the bottom surface of the vehicle body (not shown). It is even more preferable that the charging device 21 be installed behind the car stopper (not shown) on the floor 12 of the pallet 11. The height of the housing of the charging device 21 is set to, for example, 120 mm or less, and preferably 100 mm or less, taking into account the vehicle's minimum ground clearance. The housing of the charging device 21 is formed, for example, from metal so that the charging device 21 is protected even if a vehicle accidentally runs over the housing.

[0046] Furthermore, it is preferable that the winding device 31, when mounted on the side frame 13 of the pallet 11, is lower than the vehicle's side mirrors and does not protrude to the left or right beyond the side frame 13. By setting the total height of the side frame 13 and the casing 36 to 700 mm or less, it is possible to prevent collision with the vehicle's side mirrors. [Explanation of symbols]

[0047] 11: Palette 12: Floor part 13: Side frame 14: Mechanical parking lot control unit 20: External power supply 21:Charging device 22: Charging cable 23:Charger body 25: Charging connector 31: Winding device 32: Connector detection sensor 33: Winding device detection sensor 34: Current detection sensor 36: Casing 37: Waiting reception department 38: energizing section 39: Drawer hole 40: Indicator light 41: First guide 42: Second guide 43: Slide section 44: Guide section

Claims

1. A charging system for a mechanical parking facility includes a charging cable connected to a charging device and a winding device for winding up the charging cable, the winding device being mounted on a parking pallet, The winding device constantly applies tension to the charging cable in the winding direction, regardless of whether the charging connector at the end of the charging cable is set in a standby receiving section when not charging, and the constant tension is configured to prevent the charging cable from grounding to the pallet.

2. 2. The charging system for a mechanical parking facility as described in claim 1, wherein an interlock release signal is issued to a mechanical parking facility control unit under two AND conditions: that the charging cable is wound around the winding device and that the charging connector is set in the standby receiving section.

3. 2. The charging system for a mechanical parking facility as described in claim 1, wherein an interlock release signal is sent to a mechanical parking facility control unit on the condition that the charging connector is set in the vehicle-side power supply port of the vehicle.

4. A charging system for mechanical parking facilities as described in claim 1 or 2, characterized in that the winding device and the charging device are separately constructed in separate housings and are mounted separately on the rear and left and right sides of the pallet.

5. 3. The charging system for a mechanical parking facility according to claim 1, wherein the winding device has a pull-out hole for the charging cable below the standby receiving portion, and when the charging connector is set in the standby receiving portion, the constant tension is applied to the charging cable, thereby encouraging the charging cable between the standby receiving portion and the pull-out hole to be approximately straight.

6. The charging system for mechanical parking facilities as described in claim 1 or 2, characterized in that the winding device is equipped with an indicator light that allows the user to check the normal status, interlock status, and device abnormality, and the user can recognize by checking the indicator light that the charging operation is being performed correctly and that the charging process has been completed correctly.

7. 7. A charging system for a mechanical parking facility as described in claim 6, wherein the indicator lights are provided on the winding device on both the side where a vehicle enters the parking pallet and the side opposite the side where the vehicle enters.

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