JPH06262951A - Battery changer of electric automobile - Google Patents

Abstract

PURPOSE:To provide a battery changer of an electric automobile that can assuredly change a battery unit automatically and promptly from underneath the electric automobile. CONSTITUTION:In a battery changer 13 of an electric automobile 1, a battery unit 3 is attached to or detached from a battery car body storage part 4 from underneath the electric automobile 1. The battery changer 13 is provided with a lifting means A, which is loaded with the battery unit 3 and is lifted, a position detection means B for detecting the position of the battery car body storage part 4, and a positioning means C for positioning the battery unit loaded on the lifting means A and the battery car body storage part 4 based on the detected position of the battery car body storage part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery exchanging device for an electric vehicle, in which a battery unit is attached to and detached from an electric vehicle.

[0002]

2. Description of the Related Art In recent years, an electric vehicle running with a battery as a driving source has been developed, and this electric vehicle has a battery charging system and a battery exchange system. This battery charging method is not practical because the electric vehicle cannot be used during charging, and it is necessary to equip each home with a charging device for charging without using the electric vehicle, for example, at night.

On the other hand, in the battery exchange method, for example, when the battery mounted in an electric vehicle is depleted by placing the battery in advance at night when power consumption is low, the battery is depleted at the place where the battery exchanging device is installed. Replace the battery with a charged battery. This battery replacement system is practical because the battery replacement work can be performed by installing a battery replacement facility like a gas station.

[0004]

In such a battery replacement system, for example, replacement is performed from the rear of the vehicle,
Some of them are replaced from below the vehicle. However, some of them are replaced from the rear of the vehicle, so that the battery needs to be slid and removed to complicate the structure of the vehicle.

On the other hand, in the case where the vehicle is replaced from below, the battery can be easily attached and detached, and if the battery replacement facility is installed underground, it is easy to secure the installation space. As described above, it is practical to replace the battery from the lower side of the vehicle, but it is necessary to automatically, quickly, and surely perform the battery replacement work.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a battery exchanging device for an electric vehicle that can automatically, quickly, and reliably replace the battery unit from below the electric vehicle. Has an aim.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 is a battery exchanging device for an electric vehicle, wherein a battery unit is attached to and detached from a lower portion of an electric vehicle to a battery body housing portion. An elevating means for mounting and elevating the unit, a position detecting means for detecting the position of the battery vehicle body housing portion, a battery unit mounted on the elevating means based on the position detection of the battery vehicle body housing portion, and the battery It is characterized in that it is provided with an alignment means for aligning with the vehicle body storage portion.

[0008]

According to the first aspect of the present invention, the position detecting means detects the position of the battery body housing portion, and based on the position detection of the battery body housing portion, the battery unit mounted on the elevating means by the aligning means. The battery unit is aligned with the battery body housing unit, and the battery unit is raised by the elevating means and mounted in the battery vehicle body housing unit from below the electric vehicle.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a battery exchanging device for an electric vehicle according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a plan view of a battery exchange facility of an electric vehicle, FIG. 2 is a left side view of a battery exchange facility of an electric vehicle, FIG. 3 is a rear view of a battery exchange facility of an electric vehicle, and FIG. Layout of stoppers, Fig. 5
FIG. 3 is a perspective view showing a state in which a battery unit is mounted on an electric vehicle.

The battery exchanging facility 2 of the electric vehicle 1 is provided underground, and the battery unit 3 is attached to and detached from the electric vehicle 1 from below the battery body accommodating portion 4. The basement 5 of the battery exchanging facility 2 can be accessed by a ramp 6, and in the basement 5, a charger 7, a switchboard 8, a control operation panel 9, a rack 10, a carrier 1
1, a temporary stand 12, and a battery exchange device 13 are arranged. A stopper plate 14 is provided on the basement 5, and a front wheel 201 of the electric vehicle 1 for replacing the battery unit 3 is brought into contact with a wheel stopper 200 provided on the stopper plate 14 to be positioned. In the vicinity of the wheel stop 200, there is a tape switch 10 for checking the presence / absence of a vehicle.
0 is provided, and the tape switch 10 for checking the presence or absence of the vehicle
ON when both front wheels 201 of electric vehicle 1 ride on 0
To be done.

The battery unit 3 comprises a tray 15 and a plurality of batteries 16 placed on the tray 15, and lock fittings 17 and electric couplers 18 are provided on both sides of the tray 15. On the other hand, a lock device 19 and an electric coupler 20 are provided correspondingly to the battery vehicle body housing portion 4 of the electric vehicle 1, and when the battery unit 3 is inserted into the battery vehicle body housing portion 4, the lock metal fitting 1 is automatically provided.
7 is locked by the lock device 19, the respective electric couplers 18 and 20 are connected, and the battery 16 and the electric vehicle 1 are electrically connected. The cab 2 of this electric vehicle 1
1 is provided with a lock release button 22, and by operating this lock release button 22, the lock of the lock device 19 is released, and the battery unit 3 becomes replaceable.

The charger 7 is electrically connected to the charging connection terminal 202 provided on the tray 15 of the battery unit 3 that is removed from the electric vehicle 1 and consumed, and the battery 16 of the battery unit 3 is charged. The control operation panel 9 controls the entire battery exchange facility 2.

A roller 23 is provided on the rack 10, and the battery unit 3 can be easily transported by the roller 23. A carrier-side stopper 24 is provided on the rack 10, and the carrier-side stopper 24 prevents the battery unit 3 from falling. The carrier 11 is guided by the guide rail 25 to the side of the temporary placing table 12 and the battery exchange device 13.
It can be moved to and from the side of. This carrier 1
1 is provided with a pair of rack side stoppers 26 and a pair of temporary placement table side stoppers 27. The rack side stoppers 26 and the temporary placement table side stoppers 27 prevent the battery unit 3 from falling off the carrier 11. ing. The temporary stand side stopper 27 functions as a replacement table side stopper when moved to the battery replacement device 13 side.

The temporary table 12 has a plurality of free wheels 2
8 is rotatably provided, and the depleted battery unit 3 is taken out from the replacement table 29 of the battery replacement device 13 to the temporary placing table 12. Then, the carrier 11 is attached to the rack 1
0 and the temporary placing table 12, and the battery unit 3 consumed from the temporary placing table 12 is inserted into the rack 1 via the carrier 11.
Move to 0. The temporary placing table 12 is provided with a pair of carrier-side stoppers 30 and a pair of exchange table-side stoppers 31. The carrier-side stopper 30 and the exchange table-side stopper 31 drop the battery unit 3 from the temporary placing table 12 respectively. Is being prevented.

When the charged battery unit 3 is replaced, the carrier 11 is replaced with the rack 10 and the temporary placing table 1.
2 between the rack 10 and the battery unit 3
Is carried into the carrier 11, and the carrier 11 is moved by the guide rail 25 to a position facing the battery exchange device 13. At this position, the battery unit 3 is carried into the exchange table 29 of the battery exchange device 13 from the carrier 11.

The exchange table 29 of the battery exchanging device 13 is provided with a pair of temporary-stand-side stoppers 32a and a pair of carrier-side stoppers 33a, and a pair of stoppers 32b and 33b are provided at positions facing them. Has been. The temporary table side stopper 32a, the carrier side stopper 33a, and the stoppers 32b and 33b.
Thus, each of the battery units 3 is prevented from dropping from the replacement table 29.

Exchange table 29 of the battery exchange device 13
Is provided on a support frame 34 so as to be able to move up and down. This exchange table 29 is operated by an elevating device 35 so that the exchange table 29 approaches the battery carcass compartment 4 of the electric vehicle 1 and the height positions of the carrier 11 and the temporary placement table 12. Move between height positions. The support frame 34, the exchange table 29, and the lifting device 3
5, an elevating means A for mounting and elevating the battery unit 3 is constructed.

At the position where the exchange table 29 faces the temporary placement table 12, the exhausted battery unit 3 is carried out from the exchange table 29 to the temporary placement table 12, and charging is performed at the position where the exchange table 29 faces the carrier 11. The carried battery unit 3 is carried into the exchange table 29 from the carrier 11. Further, at a height position where the exchange table 29 approaches the battery vehicle body housing portion 4 of the electric vehicle 1, the consumed battery unit 3 is removed from the battery vehicle body housing portion 4, and the battery unit charged in the battery vehicle body housing portion 4 is removed. 3 is guided by the guide portion 203.

The support frame 34 of the battery exchanging device 13 includes:
Two position detection sensor units 36 are provided on one side thereof, and one similar position detection sensor unit 36 is provided on one of the sides orthogonal to this side, and the laser displacement sensors 37 of the respective position detection sensor units 36 are provided. It moves to detect the position of the battery body storage unit 4. Each of the position detection sensor units 36 constitutes position detecting means B for detecting the position of the battery body housing section 4, and the position information of the battery body housing section 4 is inputted to the control device 38. The control device 38 may be provided in the control operation panel 9.

An alignment guide bar unit 39 is provided below the position detection sensor unit 36,
The guide bar 40 of this alignment guide bar unit 39
Is moved according to the position of the battery body housing section 4 under the control of the control device 38. This alignment guide bar unit 3
9, a push-out cylinder unit 41 is provided at a position facing the push-out cylinder unit 9, and the push-out cylinder unit 4 is controlled by the control device 38.
The battery unit 3 is pressed against the guide bar 40 of the alignment guide bar unit 39 by the rod 42 of No. 1 to perform the alignment. The alignment guide bar unit 39, the push-out cylinder unit 41, and the control device 38 align the battery unit 3 mounted on the lifting means A with the battery body housing unit 4 based on the position detection of the battery body housing unit 4. Positioning means C for performing is configured.

In this way, the position detecting sensor unit 36 constituting the position detecting means B detects the position of the battery body housing portion 4, and the position aligning means C is constructed based on the position detection of the battery body housing portion 4. The alignment guide bar unit 39, the push-out cylinder unit 41, and the controller 38 align the battery unit 3 placed on the exchange table 29 that constitutes the elevating means A with the battery vehicle body storage unit 4, and the electric vehicle 1 Since the battery unit 3 is attached to the battery vehicle body housing 4 from below, the battery unit 3 can be automatically, quickly, and reliably replaced from below the electric vehicle 1.

FIG. 6 is a plan view of the battery exchanging device, FIG. 7 is a rear view of the battery exchanging device, FIG. 8 is a right side view of the battery exchanging device, and FIG. 9 is a sectional view of a free wheel portion of the exchanging table. The exchange table 29 of the battery exchanging device 13 is provided with, for example, 48 free wheels 43 (similar to the free wheels 28 of the temporary placing table 12) so that a part thereof protrudes. A lifting power unit 44 is arranged in the exchange table 29, and a freewheel support plate 45 is attached to the lifting power unit 44.
Is provided. This freewheel support plate 4
5 is moved up and down by an elevating power unit 44, and the position of the free wheel support plate 45 is detected by a free wheel elevating position detecting proximity switch 46 fixed to the exchange table 29.

A freewheel frame 48 is provided with a spring 49 on a holding portion 47 of the freewheel support plate 45.
The guide bars 50 and 51 can be moved up and down. The freewheel 43 is rotatably held by the freewheel frame 48, and the freewheel 43 is always biased by the spring 49 toward the window portion 52 of the exchange table 29. Proximity switches 53 for contact confirmation are provided on four holding portions 47 of the freewheel 43 at all 48 positions, and the proximity switches 53 for contact confirmation are turned on by the vertical movement of the freewheel frame 48. When it becomes, it is determined that the exchange table 29 and the battery unit 3 are in a close contact state.

That is, before the battery unit 3 contacts the exchange table 29, the window 5 on the upper surface of the exchange table 29 is provided.
The free wheel 43 is projected from 2, and when the exchange table 29 is raised as it is, the free wheel 43 is forcibly pushed down by the lower surface of the battery unit 3. At this time, since the lifting power unit 44 has a sufficient supporting force, only the free wheel 43 is lowered, and all 48
The state where the close contact confirmation proximity switches 53 are turned on at four positions among the free wheels 43 at the certain positions is confirmed and it is determined that the close contact state is established. In this way, the close contact state between the exchange table 29 and the battery unit 3 is confirmed.

FIG. 10 is a perspective view of the exchange table, and FIG. 11 is a plan view showing a state where the battery unit is placed on the exchange table. Exchange table 2 of battery exchange device 13
9, a replacement range confirmation tape switch 54 is provided on the outer peripheral edge of the upper surface thereof, and when the battery unit 3 protrudes from the exchange table 29 and is placed as shown in FIG. Tape switch 54 is pressed
N is done. The tape switch 54 for confirmation within the replacement range is OF
In the F state, the battery unit 3 is replaced by the exchange table 29.
It is judged that it is not eating out more. In this way
It is confirmed that the battery unit 3 does not protrude from the exchange table 29 during the detachment and storage work of the battery unit 3. Further, the exchange table 29 is provided with a battery presence / absence confirmation sensor 114, and the battery presence / absence confirmation sensor 114 confirms that the battery unit 3 is positioned on the exchange table 29.

FIG. 12 is a side view of the position detection sensor unit and the alignment guide bar unit, FIG. 13 is a schematic view showing the state of detection by the position detection sensor unit, and FIG. 14 is the tip of the guide bar of the alignment guide bar unit. FIG. 15 is a cross-sectional view of the tip end portion of the guide bar of the alignment guide bar unit.

The unit holder 55 is attached to the battery exchanging device 1.
The position detection sensor unit 36 is attached to the upper side of the unit holder 55, and the alignment guide bar unit 39 is attached to the lower side of the unit holder 55. The position detection sensor unit 36 is provided with a sensor sending air cylinder 56. The sensor sending air cylinder 56
Is operated, the laser displacement sensor 37 moves in the axial direction as shown in FIG. The position detection sensor unit 36 uses a sensor sending air cylinder 56 having a built-in linear scale 101 that generates a pulse while making a stroke, and the controller 38 reads the number of pulses by a counter to convert the stroke amount. And has the function to read the stroke amount at the same time.

The laser displacement sensor 37 is a sensor capable of detecting a step or a sensor capable of detecting an inner wall. For example, by using the laser displacement sensor 37, a point outside the measurement range can be detected as a step. It is determined to be the corner 4a. Further, in order to improve the position measurement accuracy, spot-like sensing is required, and the accuracy deteriorates as the measurement range expands as the distance from the sensor increases, but for example, the measurement light source does not diffuse because it is a laser. In this way, the electric vehicle 1
The position of the battery body housing portion 4 is detected by detecting the corner 4a of the inner wall of the battery body housing portion 4. In addition,
In addition to this, a special reflection tape that strongly reflects the laser may be attached to an appropriate position on the bottom of the electric vehicle 1 and used as a reference for position detection.

The alignment guide bar unit 39 is equipped with a guide bar sending motor 57 with a brake,
By driving the guide bar feeding motor 57, the ball screw 58 is rotated to move the guide bar 40 to the position shown in FIG.
Move in the axial direction as shown in. This guide bar 40
A holder 59 is supported by a support pin 60 at the tip of the holder so as to be movable in the axial direction, and the holder 59 is always urged in a protruding direction by a spring 61. A roller 63 is rotatably provided on the holder 59 via a support pin 62. The roller 63 facilitates the movement of the battery unit 3, and the battery unit 3 is structured to smoothly move along the guide bar 40 at the time of alignment as described above.

The rotation of the ball screw 58 is detected by the encoder 64, and the information from the encoder 64 is used to control the guide bar feeding motor 57 and hold it at a predetermined position. As described above, the encoder 64 and the ball screw 58 are used for the guide bar feeding motor 57 to improve the stopping accuracy at the designated position and the guide bar feeding motor 57.
The internal brake is used to hold the position, and the guide bar 40 is advanced to the indicated position and stopped accurately, and then the current position can be held against the force acting from the opposite direction.

Further, a holder 59 at the tip of the guide bar 40
A switch contact piece 200 is screwed to the guide bar 40, and a proximity switch 65 for confirming the end of alignment is attached to the guide bar 40 so as to face the switch contact piece 200. At the end of the alignment of the battery unit 3 before storing the vehicle body, the battery unit 3 pushes the roller 63 and the holder 59 to turn on all the alignment completion confirmation proximity switches 65 attached to the tip of the guide bar 40. to decide.

FIG. 16 is a right side view of the pushing cylinder unit. The unit holder 66 is attached to the battery exchanging device 13
The air cylinder 67 for pushing is attached to the lower side of the unit holder 66.
The operation of the pushing air cylinder 67 moves the rod 42 in the axial direction as shown in FIG. A roller 68 is attached to the tip of the rod 42. By attaching the roller 68 to the tip in this way, the battery unit 3 can be smoothly moved, and the battery can be smoothly moved along the guide bar 40 during alignment. The structure is such that the unit 3 moves.

FIG. 17 is a left side view showing the stop structure of the exchange table. A replacement table long-term stop stopper 69 is fixed to the support frame 34 of the battery replacement device 13, and a stopper rod 70 can be moved forward and backward on the replacement table long-term stop stopper 69. When the stopper rod 70 advances, the tip portion 70a thereof projects inside the support frame 34, and the stopper receiving portion 71 of the exchange table 29 is held by the tip portion 70a. In this way, the exchange table 2
9 is held in an intermediate stop state, so that the exchange table 2
9 is stopped on the upper part of the support frame 34, the exchange table 29 is made flush with the ground surface, and the electric vehicle 1 travels so that it can be stopped at a predetermined position.

Next, based on FIGS. 18 to 23, the position detection of the battery vehicle body housing part 4 of the electric vehicle 1 and the battery unit 3 and the battery vehicle body mounted based on the position detection of the battery vehicle body housing part 4 will be described. Positioning with the storage unit 4 will be described.

FIG. 18 is a diagram showing the positional relationship between the electric vehicle and the position detection sensor unit and the alignment guide bar unit. Two position detection sensor units 36 are arranged at a lower position of the electric vehicle 1 so as to face one side of the battery body housing portion 4, and one position detection sensor faces one side orthogonal to the side. The unit 36 is arranged. The position detection sensor unit 36 is shown in FIG.
Two may be used as shown in FIG. Positioning guide bar units 39 are arranged parallel to each other just below the position detecting sensor unit 36, and a pushing cylinder unit 41 is arranged facing the position adjusting guide bar unit 39.

FIG. 19 and FIG. 20 are views showing the position detection of the battery body housing of the electric vehicle. First, the reference position is set orthogonally, and the reference position is the same reference both when detecting the position and when performing the alignment. Then, the laser displacement sensor 37 attached to the tip of the position detection sensor unit 36 is pushed out by the sensor delivery air cylinder 56. At this time,
Extrusion is performed while reading the stroke amount of the laser displacement sensor 37. The laser displacement sensor 37 detects a virtual intersection point with the opening edge of the lower portion of the inner wall of the battery body housing section 4 on the sensing line, that is, measurement points A to C (D) in FIG.
The amount of pushing stroke at that time is read, and the positional relationship of three points (or four points) with respect to the set reference (the length from the reference position to each virtual intersection: La to Lc (Ld)) is obtained to determine the battery body storage unit 4 Measure the position of.

FIG. 21 is a diagram for explaining the position conversion and position adjustment of the battery unit. Now, assuming a state in which the battery unit 3 is stored in the battery body storage unit 4 of the electric vehicle 1, the assumed battery is extended on the extension (on the sensing line) of the virtual intersections A to C (D) obtained previously. Measurement is performed by calculating distances Xa to Xc (Xd) from the reference position to virtual intersections D to F (G) with the outer periphery of the unit 3 and determining a positional relationship of 3 points (or 4 points) with respect to the reference position. Battery unit 3 for the battery body housing 4
Know the storage position of the.

3 with respect to the reference position thus obtained
Based on the positional relationship of points (or 4 points) D to F (G), the tip of the guide bar 40 of the alignment guide bar unit 41 is arranged at a position corresponding to each point, and the battery unit 3 is made to follow them. To align the positions.

22 to 23 are views for explaining the alignment process of the battery unit. As shown in FIG. 22,
The stroke amount of the guide bar 40 of each alignment guide bar unit 39 is calculated from the calculated distances Xa to Xc (Xd),
After advancing, stop and fix. Next, as shown in FIG. 23, the rod 42 of the push-out cylinder unit 41 is moved forward to push the battery unit 3 against the tip of the guide bar 40 to follow the position. In this way, after the battery unit 3 is aligned, the replacement table 29 is raised to store the new battery unit 3 in the battery body housing section 4 and the battery is replaced.

FIG. 24 is a control block diagram of a battery exchange device for an electric vehicle. Vehicle presence / absence confirmation unit, position detection unit,
The alignment unit, the exchange table elevating unit, the freewheel elevating unit, and the battery exchange table presence / absence confirming unit are provided with detecting means 90, and information from this detecting means 90 is sent to the control device 38 via the interface 91. Is entered. In this control device 38, each detecting means 90
The actuator 92 is controlled based on the information from

In the vehicle presence / absence confirming section, as the detecting means 90,
A vehicle presence / absence checking tape switch 100 is provided. The position detecting unit is provided with a linear scale 101, a laser displacement sensor 37, an amplifier 102 provided in the control device 38, and a sensor sending air cylinder forward end / reverse end confirmation switch 103 as detecting means 90. The sensor delivery air cylinder 56 is controlled based on the information. As the detection means 90 in the alignment section,
Encoder 64, proximity switch 6 for confirmation of alignment completion
5, guide bar forward / backward end confirmation switch 104, push-out air cylinder forward / backward end confirmation switch 10
5 is provided, and the guide bar feeding motor 57 and the pushing air cylinder 67 are controlled based on these information. As the detection means 90 in the replacement table elevating part, there is a tape switch 54 for confirmation within the replacement range, a limit switch 106 for detecting the lowest position, a limit switch 107 for detecting the alignment work position, a limit switch 108 for detecting the floor position, and a replacement table. A proximity switch 53 for confirming close contact between the battery 29 and the battery unit 3 and a limit switch 109 for raising limit detection are provided. Based on these pieces of information, the hydraulic motor 1 for raising and lowering the exchange table raising / lowering lift is provided.
10 、 Valve for lifting / lowering the exchange table 1
11. Actuating valve for stopping operation of lifting / lowering lift of exchange table 1
Control twelve. Detecting means 9 is provided on the free wheel elevating part.
0 is provided with a limit switch 113 for detecting a free wheel raised position and a proximity switch 46 for detecting a free wheel lift position, and controls the lift power unit 44 based on these pieces of information. Further, a battery presence / absence confirmation sensor 114 is provided as the detection means 90 in the presence / absence confirmation unit on the battery replacement table.

25 to 29 are operation flowcharts of the battery exchange device for an electric vehicle. In step S1, it is determined whether or not the worker can enter the vehicle. If the vehicle can enter, the vehicle is entered in step S2, the vehicle is set in step S3, and the stopper is set by the vehicle presence / absence confirmation tape switch 100 in step S4. It is determined whether or not the electric vehicle 1 is at a predetermined position on the plate 14 (whether or not the system can be started).

When the electric vehicle 1 is on the stopper plate 14, the manual push button provided on the control operation panel 9 is pressed in step S5 to start the system. Then, the free wheel 43 on the exchange table 29 rises in step S6, the exchange table 29 rises in step S7, and the exchange table 29 in step S8.
It is determined whether or not is closely attached to the tray 15 of the battery unit 3. When the exchange table 29 comes into close contact with the tray 15, the exchange table 29 is stopped in step S9, it is determined in step S10 whether the tray 15 is within the exchangeable range on the exchange table 29, and the tray 15 is replaced with the exchange table. If it is not within the exchangeable range on 29, the exchange table 29 is replaced with this exchange table 29 in step S11.
And the upper surface of the stopper plate 14 are lowered to the same height, the free wheel 43 on the exchange table 29 is lowered in step S12, the vehicle is evacuated in step S13, and the process proceeds to step S1.

If the tray 15 is in the exchangeable range on the exchange table 29 in step S10, step S1
In step 4, the free wheel 43 on the exchange table 29 is lowered, in step S15, the lock release button 22 is pressed to release the vehicle body side lock (manual work), and in step S16, a release end confirmation (not shown) provided on the control operation panel 9 is confirmed. The button (hand push button) is turned on, the stopper rod 70 of the exchange table long-term stop stopper is retracted in step S17, the exchange table 29 is lowered in step S18, and the tray 15 is lowered together with the exchange table 29 in step S19. Make a decision. This determination is made based on the presence / absence of signals from the four battery presence / absence confirming sensors 114 provided on the exchange table 29.

If the tray 15 is not lowered together with the exchange table 29, the exchange table 2 is returned in step S20.
9 to raise the free wheel 43, and step S21
In step S22, the exchange table 29 is raised, and in step S22, close contact is confirmed. Then, when the free wheel 43 on the exchange table 29 descends in step S23, step S23
The process proceeds to 15 and the above operation is performed.

If the tray 15 is descending together with the exchange table 29 in step S19, the fall prevention stoppers 32a, 32 on the exchange table 29 in step S24.
b, 33a, 33b are raised, and the exchange table 29 is lowered to the lowest point position in step S25.
The exchange table 29 is stopped at 6 and the old and new battery units 3 are exchanged.

That is, in step S27, when the operator turns on the up / down button (not shown) provided on the control operation panel 9,
In step S28, the free wheel 43 on the exchange table 29 rises, and in step S29, the temporary placement table side stopper 32a of the exchange table 29 and the exchange table side stopper 31 of the temporary placement table 12 are provided on the control operation panel 9 (not shown). By turning on the elevating button, the temporary placement table side stopper 32a of the exchange table 29 and the exchange table side stopper 31 of the temporary placement table 12 are lowered in step S30, and step S31 is performed.
The old battery unit 3 is unloaded manually.

Then, in step S32, the exchange table 2
By turning on the elevating button, the temporary placement table side stopper 32a of 9 and the exchange table side stopper 31 of the temporary placement table 12 are turned on, and the temporary placement table side stopper 32a of the exchange table 29 and the exchange table side stopper 31 of the temporary placement table 12 are turned on in step S33.
Rises. Next, in step S34, the exchange table 29
The carrier-side stopper 33a of the carrier 11 and the temporary-stand-side stopper 27 of the carrier 11 are turned on by turning on other up / down buttons (not shown) provided on the control operation panel 9, and the carrier-side stopper 33a of the exchange table 29 is lowered in step S35. ,
The temporary stand side stopper 27 of the carrier 11 is lowered, and the new battery unit 3 is manually loaded in step S36.

Then, in step S37, the exchange table 2
By turning on the elevating button for the carrier side stopper 33a of 9 and the temporary stand side stopper 27 of the carrier 11, the carrier side stopper 33a of the exchange table 29 is raised in step S38, and the temporary stand side stopper 27 of the carrier 11 is turned on.
Rises. Then, in step S39, the exchange table 2
When the elevating button of the free wheel 43 on 9 is turned on, the free wheel 43 on the exchange table 29 is lowered in step S40.

Then, the position of the battery body housing section 4 is measured. That is, the sensor delivery air cylinder 56 is moved forward in step S41, the opening of the battery body housing 4 is measured in step S42, and it is determined in step S43 whether or not the measurement is completed, and the measurement is not completed. In this case, the sensor sending air cylinder 56 is retracted in step S44, and the process proceeds to step S41. Step S43
If the measurement is completed in step S45, the sensor delivery air cylinder 56 is retracted in step S45.

Next, in step S46, the operator confirms the completion of the replacement of the old and new battery units 3, and if the replacement is completed, presses a new and old battery unit replacement completion confirmation button (not shown) provided on the control operation panel 9. Push. Further, it is determined in step S47 whether or not the exchange table can be raised. If the exchange table can be raised, the exchange table 29 is raised in step S48, and then step S49.
Then, it is determined whether the exchange table 29 has reached the alignment position of the battery unit 3. Battery unit 3
When the alignment position is reached, the exchange table 29 is stopped in step S50, the free wheel 43 on the exchange table 29 is lifted in step S51, and the fall prevention stoppers 32a, 32b, 33 in step S52.
a and 33b are lowered.

Then, the new battery unit 3 is aligned. That is, in step S53, the guide bar 40 of the alignment guide bar unit 39 is moved forward, and in step S5
In step 4, it is determined whether the guide bar is at the stop position or not.
Is stopped, and the guide bar 40 is fixed in step S56. Next, in step S57, the extrusion cylinder unit 4
The rod 42 of No. 1 is advanced, and it is determined in step S58 whether or not the alignment is completed. When the alignment is completed, the rod 4 of the pushing cylinder unit 41 is pushed in step S59.
2 and the guide bar 40 of the alignment guide bar unit 39 are retracted.

Then, in step S60, the fall prevention stoppers 32a, 32b, 33a, 33b are raised, in step S61 the free wheel 43 on the exchange table 29 is lowered, and in step S62 it is judged whether or not the exchange table can be raised. To do. If the exchange table can be raised, the exchange table 29 is raised in step S63. And
In step S64, it is determined whether or not the upper end of the battery unit 3 has reached the vicinity of the lower end of the vehicle body storage portion 4. If it has reached, the exchange table 29 is temporarily stopped in step S65, and the exchange table 29 is placed on the exchange table 29 in step S66. Raise the free wheel 43 of. After that, step S
In 67, the exchange table 29 is raised, and in step S68, it is determined whether or not the upper surfaces of the exchange table 29 and the stopper plate 14 are at the same height, and when they become the same height, the exchange table is displayed on the exchange table at step S69. The fall prevention stoppers 32a, 32b, 33a, 33b are lowered. While the exchange table 29 is being raised, the upper end of the battery unit 3 is accurately guided to the storage unit 4 by being guided by the eight guide portions 203 (FIG. 5) provided on the lower end peripheral portion of the battery body storage unit 4 of the electric vehicle 1. It is designed to be stored.

Next, in step S70, the exchange table 29
Determines whether or not the tray 15 is in close contact with the tray 15. If the exchange table 29 is in close contact with the tray 15, the exchange table 29 is stopped in step S71, and then in step S72.
In step S73, the vehicle body side lock is automatically locked, and in step S73, the operator turns on a lock end confirmation button (not shown) provided on the control operation panel 9, and in step S74, the free wheel 43 on the exchange table 29 is lowered.

Then, in step S75, the exchange table 2
9 is lowered, and in step S76, it is determined whether or not the ray 15 is not on the exchange table 29 based on the presence or absence of the signal from the battery presence / absence confirmation sensor 114, and the tray 15
If it is on the exchange table 29, the exchange table 29 is stopped in step S77, the lock release instruction is displayed on the display panel (not shown) provided in the control operation panel 9 in step S78, and the manual operation is performed in step S79. The lock is released by pressing the lock release button 22 in step S80.
Then, a retry instruction button (not shown) provided on the control operation panel 9 is turned on, and the process proceeds to step S69.

If the tray 15 is not on the exchange table 29 in step S76, the stopper rod 70 of the exchange table long-term stop stopper 69 is advanced in step S81, and the upper surfaces of the exchange table 29 and the stopper plate 14 are removed in step S82. It is determined whether or not the height is the same. If the exchange table 29 is at the same height, the exchange table 29 is stopped in step S83, and the step S83 is performed.
At 84, the electric vehicle 1 is moved backward and the battery exchange is completed.

In this embodiment, the battery unit 3 is moved to align the battery unit 3 and the battery vehicle body housing 4, but the electric vehicle 1 may be moved.

[0059]

As described above, the invention according to claim 1 is
The position detecting means detects the position of the battery body housing portion, and based on the position detection of the battery body housing portion, the position aligning means aligns the battery unit placed on the elevating means with the battery body housing portion. Since the battery unit is lifted by the elevating means and mounted in the battery body housing portion from below the electric vehicle, the battery unit can be automatically, quickly, and reliably replaced from below the electric vehicle.

[Brief description of drawings]

FIG. 1 is a plan view of a battery exchange facility of an electric vehicle.

FIG. 2 is a left side view of a battery exchange facility of an electric vehicle.

FIG. 3 is a rear view of a battery exchange facility of an electric vehicle.

FIG. 4 is a layout view of a battery unit drop prevention stopper.

FIG. 5 is a perspective view showing a state in which a battery unit is mounted on an electric vehicle.

FIG. 6 is a plan view of the battery exchange device.

FIG. 7 is a rear view of the battery exchange device.

FIG. 8 is a right side view of the battery exchange device.

FIG. 9 is a sectional view of a free wheel portion of the exchange table.

FIG. 10 is a perspective view of an exchange table.

FIG. 11 is a plan view showing a state where the battery unit is placed on the exchange table.

FIG. 12 is a side view of a position detection sensor unit and an alignment guide bar unit.

FIG. 13 is a schematic diagram showing a state of detection by a position detection sensor unit.

FIG. 14 is a side view of a guide bar tip portion of the alignment guide bar unit.

FIG. 15 is a cross-sectional view of the guide bar tip portion of the alignment guide bar unit.

FIG. 16 is a right side view of the pushing cylinder unit.

FIG. 17 is a left side view showing a stop structure of the exchange table.

FIG. 18 is a diagram showing a positional relationship between an electric vehicle, a position detection sensor unit, and a positioning guide bar unit.

FIG. 19 is a diagram illustrating position detection of a battery vehicle body storage portion of an electric vehicle.

FIG. 20 is a diagram showing position detection of a battery vehicle body storage portion of an electric vehicle.

FIG. 21 is a diagram for explaining position conversion and position adjustment of the battery unit.

FIG. 22 is a diagram illustrating a positioning process of the battery unit.

FIG. 23 is a diagram illustrating a battery unit alignment process.

FIG. 24 is a control block diagram of a battery exchange device for an electric vehicle.

FIG. 25 is an operation flowchart of a battery exchange device for an electric vehicle.

FIG. 26 is an operation flowchart of a battery exchange device for an electric vehicle.

FIG. 27 is an operation flowchart of a battery exchange device for an electric vehicle.

FIG. 28 is an operation flowchart of a battery exchange device for an electric vehicle.

FIG. 29 is an operation flowchart of a battery exchange device for an electric vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric vehicle 3 Battery unit 4 Battery car body housing 13 Battery exchange device A Elevating means B Position detecting means C Positioning means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000139355 YEC Co., Ltd. 1 1 115, Motoshiro-cho, Hamamatsu City, Shizuoka Prefecture (72) Inventor Hiromasa Higasa 2911 511, Kota-cho, Takamatsu City, Kagawa Prefecture (72 ) Inventor Hidetoshi Nasu 67-6 Mure-cho, Kida-gun, Kagawa (72) Inventor Shigehiko Hayashi 877, Kita-cho, Takamatsu-shi, Kagawa 3 (72) Inventor Shinji Matsuda 198, Yase-hanajiri-cho, Sakyo-ku, Kyoto-shi, Kyoto Prefecture-1 Domeuchi Co., Ltd. (72) Inventor, Kazuo Kuroda, Sumitomo Life Building, 1F, 115 Motoshiro-cho, Hamamatsu City, Shizuoka Prefecture.

Claims (1)

[Claims] 1. A battery exchanging device for an electric vehicle, wherein a battery unit is attached to and detached from a lower portion of an electric vehicle to a battery body housing portion, and an elevating means for mounting and elevating the battery unit and a position of the battery body housing portion. It is characterized by comprising position detecting means for detecting and position adjusting means for aligning the battery unit mounted on the elevating means with the battery body housing portion based on the position detection of the battery body housing portion. Battery exchange device for electric vehicles.