WO2018068559A1

WO2018068559A1 - Chassis-type battery swapping station and battery swapping method thereof for use in electric car

Info

Publication number: WO2018068559A1
Application number: PCT/CN2017/095004
Authority: WO
Inventors: 郝战铎
Original assignee: 蔚来汽车有限公司
Priority date: 2016-10-12
Filing date: 2017-07-28
Publication date: 2018-04-19
Also published as: CN106891865A; TW201813838A; TWI732052B; CN106891865B

Abstract

An chassis-type battery swapping station used for an electric car, comprising: a battery swapping platform (1) used to park and position an electric car, a first battery charging box (2) provided at one side of the battery swapping platform (1) used to store a battery and charge said battery, and a battery swapping robot (3) used to exchange a battery in an electric car lacking charge and a battery on the first battery charging box (2) which is full of charge; when frequency of battery swapping of an electric car increases, a second battery charging box (4) may be added at another side of the battery swapping platform, the two battery charging boxes both being fixedly connected to the battery swapping platform by means of bolts. A battery swapping method is also disclosed. The present battery swapping station not only is easy to install and has a small footprint, but can also effectively increase or decrease number of charging boxes according to frequency of battery changes for an electric car, effectively preventing resource waste.

Description

Chassis type power station for electric vehicle and electric exchange method thereof

Technical field

The invention belongs to the field of electric vehicle charging and replacing, and particularly provides a chassis type power station for an electric vehicle and a power exchange method thereof.

Background technique

At present, pure electric vehicles mainly have two energy supply modes: vehicle charging and battery replacement. Among them, when charging the electric vehicle, the AC slow charging time is long, and the parking lot is limited. The DC fast charging power is large and the charging time is short, but the impact on the power grid is large, and the battery life is also reduced. By adopting the power-change mode, it can interact with the power grid to achieve orderly charging, realize the “peak-shaving energy storage” of the power load, improve the comprehensive utilization efficiency of the power equipment, and not only quickly supply energy to the electric vehicle, but also reduce the waiting time of the user. Does not damage battery life. Therefore, the mode of power exchange in the public transportation field in first-tier cities in China has a high promotion value and economic significance.

For electric vehicles, the installation of the battery in the chassis not only helps to improve the utilization space of the vehicle, but also separates the battery from the occupants, improves safety, reduces the center of gravity of the vehicle, and improves the vehicle's Maneuverability, therefore the chassis-type battery replacement technology has become the development direction of electric vehicles.

However, the electric vehicle chassis type battery power station that has been built and under construction generally uses a stacker to carry out the battery transfer. The placement direction of the battery in the vehicle state and the placement direction of the battery in the station are parallel, and need to be occupied. Larger space, even with pre-packaged containers, the location of the power station is greatly limited, especially for building a station in the underground parking garage. Therefore, a more reasonable battery-changing power station layout is needed to meet practical applications.

In addition, since the battery-mounted electric vehicles have just started in a few cities in China, the acceptance of vehicles for power exchange is not high, and it is obvious that the frequency of power exchange in the previous stage is not high. If the equipment of the power station is built in one step under the premise of low frequency of power exchange, it will cause waste of resources.

Accordingly, there is a need in the art for a new power station to address the above issues.

Summary of the invention

In order to solve the above problems in the prior art, in order to solve the problem that the existing electric vehicle chassis type power station takes up a large space and wastes resources in one step, the present invention provides a chassis type power station for an electric vehicle. The power station includes: a power exchange platform for parking and positioning the electric vehicle to be replaced; a first battery charging box, the first battery charging box is detachably fixed to one of the power exchange platforms Side, the first battery charging box is for storing and charging the battery; the power changing robot is capable of moving between the first battery charging box and the power changing platform, the switching The electric robot is for transporting a spent battery on the electric vehicle into the first battery charging box and mounting the fully charged battery in the first battery charging box to the electric vehicle.

In a preferred technical solution of the above-described power substation, the power station further includes a second battery charging box, the second battery charging box is detachably fixed to the other side of the power changing platform, and the second battery is charged The box is also used to store and charge the battery, and the power changing robot is also movable between the second battery charging box and the power exchange platform to transport the spent battery on the electric vehicle to the location The second battery charging box and the fully charged battery in the second battery charging box are mounted to the electric vehicle.

In a preferred technical solution of the above-mentioned power station, when the electric vehicle is replaced, the power-changing robot unloads and rotates the electric battery of the electric vehicle to the first battery charging box or the second The battery is stored in the charging box, and the full battery in the first battery charging box or the second battery charging box is taken out and rotated 90 degrees in the opposite direction to be mounted on the electric vehicle.

The battery of the spent battery and the full battery are rotated by 90° and then replaced, so that the battery in the on-vehicle state and the battery in the state of charge in the power station are perpendicular to each other, and the area of the first battery charging box and the second battery charging box can be effectively reduced. .

In a preferred technical solution of the above-mentioned power substation, the power exchange platform is provided with a ramp, which is pivotally connected to one end of the power exchange platform along the direction in which the electric vehicle enters, for making the electric vehicle Smoothly driving to the power exchange platform; a drum set disposed on the parking base of the power exchange platform for fixing and positioning the electric vehicle in the direction in which the electric vehicle enters; the push rod device The pusher device is disposed at a side of the power exchange platform for positioning the electric vehicle in a direction perpendicular to the direction in which the electric vehicle enters.

In a preferred embodiment of the above-described power substation, the power exchange platform is further provided with a lifting mechanism for lifting and positioning the electric vehicle in a direction perpendicular to the ground.

In a preferred technical solution of the above-described power substation, the lifting mechanism includes a front wheel lifting mechanism and a rear wheel lifting mechanism, and the front wheel lifting mechanism and the rear wheel lifting mechanism work independently of each other such that The bottom surface of the battery can be horizontal when the electric vehicle is lifted to the potential.

In a preferred technical solution of the above-mentioned power substation, the drum set includes a V-shaped drum set and a horizontal roller set, and when the electric vehicle is fixed to the power exchange platform, the front wheel is located on the V-shaped drum set, Its rear wheel is located on the horizontal drum set.

In a preferred technical solution of the above-mentioned power substation, both the first battery charging box and the second battery charging box are provided with: a charging stand for placing and storing a battery; a charging machine, the charging The machine is used to charge the battery.

In a preferred technical solution of the above-mentioned power substation, an elevator is further disposed in the first battery charging box and the second battery charging box, and the elevator is used to retransmit the spent battery on the power changing robot to And charging the fully charged battery on the charging stand to the power changing robot.

In a preferred embodiment of the power station, the pusher device is provided with a guiding mechanism, which guides the electric vehicle in the driving direction when the electric vehicle enters the power changing platform.

In a preferred technical solution of the above-mentioned power substation, the first battery charging box and/or the second battery charging box are provided with a control cabinet and an operation screen electrically connected to each other, and the control cabinet is used to control the replacement. The overall operation of the power station to realize the electric vehicle power changing function; the operation screen is used for the operator to control the power exchange process of the power station and/or the electric vehicle, so that the power station can be manually, semi-automatically or fully Automatic operation.

In another aspect, the present invention provides a chassis type power changing method for an electric vehicle, the method comprising the steps of: providing the above-mentioned power station; the reversible ramp of the power exchange platform is lowered; and the electric vehicle requiring power exchange After the reversible ramp travels to the power exchange platform until the front wheel of the electric vehicle enters the V-shaped drum set and the rear wheel is carried on the horizontal drum set, the V-shaped drum set positions the electric vehicle in the X direction; The push rod device of the platform positions the electric vehicle in the Y direction; the lifting mechanism lifts the electric vehicle to a preset height, positions the electric vehicle in the Z direction, and keeps the bottom surface of the battery horizontal; the electric changing robot moves to the electric vehicle The bottom is unlocked and the battery is removed, and then removed from the power-changing platform to dock with the elevator; the power-changing robot transfers the spent battery to the elevator, and the lift moves the spent battery into the charging stand for charging, or at the same time or after charging the full battery The rack is moved into the elevator; the power changing robot removes the full battery from the elevator and moves to the bottom of the electric vehicle to install the full battery to the electric vehicle.

In a preferred embodiment of the above-described power changing method, after unlocking the battery, the power-changing robot rotates the battery by 90°.

In a preferred embodiment of the above described power changing method, the power changing robot rotates the full battery in the reverse direction by 90° before mounting the fully charged battery to the electric vehicle.

In a preferred embodiment of the above-described power changing method, after the fully charged battery is mounted on the electric vehicle, the power changing robot moves from the bottom of the electric vehicle to the bottom of the elevator.

In a preferred embodiment of the above-described power changing method, after the power changing robot moves from the bottom of the electric vehicle to the lower side of the elevator, the lifting mechanism is lowered and the pusher device is retracted.

In a preferred embodiment of the above-described power changing method, after the lifting mechanism is lowered and the pusher device is retracted, the electric vehicle is driven away from the power exchange platform, and the turning ramp is stowed.

It can be understood by those skilled in the art that, in a preferred technical solution of the present invention, the first battery charging box and the second battery charging box are respectively fixedly connected to the power changing platform by bolts, and the power changing robot can simultaneously serve the first The battery charging box and the second battery charging box enable the power exchange device of the present invention to be configured with a battery charging box when the electric vehicle has a lower frequency of switching, and two battery charging boxes are configured when the frequency of the electric vehicle is changed. The ground avoids the waste of resources. Further, the power-changing robot rotates the spent battery and the full-charge battery by 90°, so that the battery state in the vehicle state and the battery direction in the state of charge in the power station are perpendicular to each other, thereby being able to be in the same size battery charging box. Store more batteries, or reduce the length of the battery charging box parallel to the direction in which the electric vehicle enters the power exchange platform while storing the same number of batteries. Furthermore, the electric vehicle is lifted by the lifting mechanism, and the power changing robot can be replaced under the electric vehicle, so that the power exchange of the present invention occupies only two or three parking spaces, which greatly reduces the power exchange. Floor area.

DRAWINGS

Figure 1 is a side view of a chassis type power substation for an electric vehicle of the present invention;

Figure 2 is a plan view of a chassis type power substation for an electric vehicle of the present invention;

Figure 3 is a front elevational view of a chassis type power substation for an electric vehicle of the present invention;

4 is a top plan view of a chassis-type substation including a power-exchanged vehicle for an electric vehicle of the present invention;

Fig. 5 is a top plan view of the chassis-equipped substation of the present invention after the expansion of the electric vehicle including the electric vehicle.

detailed description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of the present invention. For example, although the various parts of the drawing are drawn in a certain proportional relationship, the proportional relationship is not constant, and those skilled in the art can adjust it as needed to adapt to a specific application.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The terminology of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is merely for convenience of description, and does not indicate or imply that the device or component must have a specific orientation, constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that in the description of the present invention, the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed connections, for example, or It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

As shown in FIGS. 1 to 3, the chassis type power station for an electric vehicle of the present invention includes: a power exchange platform 1, a first battery charging box 2, and a power changing robot 3. For convenience of description, the traveling direction in which the electric vehicle enters the power exchange platform 1 is referred to as the X direction, the direction perpendicular to the X direction in the horizontal plane is referred to as the Y direction, and the direction perpendicular to the horizontal plane is referred to as the Z direction.

As shown in FIG. 1, the first battery charging box 2 has a front-back symmetrical structure in the X direction, and the first battery charging box 2 is provided with an elevator 21, a charging stand 22, and a charger 23. The charging stand 22 is disposed in a row in the Z direction at the end positions on both sides of the first battery charging box 2, the elevator 21 is disposed at an intermediate position of the two charging stands 22, and the elevator 21 is used for the battery The two sides of the charging stand 22 are placed in the X direction or the Y direction, and the batteries on the side charging stands 22 are taken out in the X direction or the Y direction. As an example, a charger 23 may be disposed above each of the charging stands 22 for charging the battery.

As shown in FIG. 1 and FIG. 2, in the normal state, the elevator 21 will stay at a certain height, and a lower height space is reserved in the lower portion to enable the power-changing robot 3 to be parked therein. When the power is required to be changed, the power-changing robot 3 It can be moved to the power exchange platform 1.

As shown in FIG. 2, the first battery charging box 2 is disposed on one side of the power exchange platform 1, and is detachably fixedly connected therebetween, and preferably, the two are fixedly connected by bolts, so that the power station is installed, It is convenient to disassemble and repair, saving time. Further, the power exchange platform 1 is provided with a reversible ramp 11, a V-shaped drum set 12, a horizontal roller set 13, a pusher device 14, and lift

mechanisms

15, 16. There are four reversible ramps 11, two in each group, symmetrically disposed at both ends of the power exchange platform 1 in the X direction, and each ramp 11 is pivotally connected to the power exchange platform 1 when the ramp 11 When it is put down, it forms a driving passage of the electric vehicle together with the power exchange platform 1, and the electric vehicle can be smoothly guided to the power exchange platform 1 through the ramp 11; when the electric vehicle is not replaced, the ramp 11 can be stowed, In order to reduce the footprint of the power station. It will be understood by those skilled in the art that the two sets of ramps 11 can also be provided with only one of them, so that the electric vehicle can enter and exit the power exchange platform 1 from the set of ramps 11. Further, the person skilled in the art can set the ramp 11 in the form of manual flipping or automatic flipping according to specific needs.

With continued reference to FIG. 2, the V-roller set 12 and the horizontal roller set 13 are respectively disposed on the upper surface of the power exchange platform 2. The V-roller set 12 is used to carry the front wheel of the electric vehicle and to position its front wheel in the X direction, and the horizontal drum set 13 is used to carry the rear wheel of the electric vehicle. In Fig. 2, the pusher means 14 are respectively provided on both sides of the V-shaped drum set 12 and the horizontal drum set 13, and the pusher means 14 can respectively push the front and rear wheels of the electric vehicle in the Y direction. Since the rollers on the V-roller group 12 and the horizontal roller group 13 are freely rotatable, the pusher device 14 can easily push the electric vehicles on the V-roller group 12 and the horizontal roller group 13, and thus can be used for the electric vehicle. Positioning is performed in the Y direction. Further, the pusher device 14 is provided with a guiding mechanism 141 so that the electric vehicle can be guided by the guiding mechanism 141 and the preliminary coarse positioning in the Y direction when entering the power changing platform 1, thereby reducing the pusher device 14 The amount of displacement of the electric vehicle sliding in the Y direction. Preferably, both ends of the guiding mechanism 141 are opened outward at an angle of 30°, or a person skilled in the art can appropriately adjust the angle according to specific needs, and it is fixedly connected with the push rod device 14 as a whole, for example, through a screw. The connection means of the bolt connection, welding, etc., and the push mechanism 141 are fixedly connected to the push rod device 14 as a whole.

Referring further to FIG. 2, the lift mechanism is disposed on the power exchange platform 1, and the lift mechanism includes a front wheel lift mechanism 15 and a rear wheel lift mechanism 16. Preferably, the V-shaped drum set 12 and the pusher device 14 on the left side in Fig. 2 are disposed on the front wheel lift mechanism 15, and the horizontal roller set 13 and the pusher device 14 on the right side in Fig. 2 are disposed on the rear wheel Lifting mechanism 16. The front wheel lifting mechanism 15 and the rear wheel lifting mechanism 16 can be simultaneously raised and lowered or separately raised and lowered to ensure that the bottom surface of the battery can be horizontal when the electric vehicle is lifted to the power changing position in the Z direction.

As shown in FIG. 3, the first battery charging box 2 is further provided with a control cabinet 24 and an operation panel 25 electrically connected to each other. The control cabinet 24 is used for controlling the power exchange of the present invention and the electric vehicle to be exchanged, and the operation panel 25 is used for The operator operates the control cabinet 24, thereby enabling all operations of the power station to be operated manually, semi-automatically or fully automatically.

The method and steps of the power exchange and electric vehicle switching of the present invention will be briefly described below with reference to FIG. First, the ramp 11 is lowered to enable the electric vehicle to pass through the power exchange platform 1, and the electric vehicle is parked on the V-shaped drum set 12 by the guiding mechanism 141 so that the rear wheel is parked on the horizontal roller set 13 Up, and thus the electric vehicle is fixed and positioned in the X direction.

Next, the electric vehicle is positioned in the Y direction by the pusher device 14, and the electric vehicle is lifted to a preset height by the front wheel lift mechanism 15 and the rear wheel lift mechanism 16 and positioned in the Z direction.

Again, the power-changing robot 3 moves to the bottom of the electric vehicle and unlocks the battery of the electric vehicle, and the power-changing robot 3 drives the battery to drop and rotates it 90 degrees clockwise, and then moves out with the elevator 21 in the Y direction. The docking is performed, and the spent battery is moved from the power-changing robot 3 to the elevator 21.

Then, the elevator 21 is raised or lowered and the spent battery is moved into the charging stand 22 in the X direction, and the charger 23 charges the spent battery, while the spent battery on the lift 21 is completely moved into the charging stand 22 Afterwards, the fully charged battery is moved into the elevator 21 from the charging stand 22 on the other side, and the lift 21 is raised or raised to a position where it is docked with the power-changing robot 3. The power-changing robot 3 takes the fully-charged battery from the elevator 21 and moves it to the bottom of the electric vehicle, further rotates the fully-charged battery by 90° counterclockwise and lifts it up, so that the fully-charged battery and the electric vehicle are positioned and locked. tight.

Finally, the elevator 21 is raised to the predetermined position, the power-changing robot 3 is moved to the lower side of the elevator 21 in the first battery charging box 2, the front wheel lifting mechanism 15 and the rear wheel lifting mechanism 16 are lowered, the pusher device 14 is retracted, and the electric vehicle is retracted. Drive away from the power exchange platform 1, the ramp 11 is closed, and the power is changed.

It will be readily understood by those skilled in the art that during the process of changing the electric vehicle, the power-changing robot 3 rotates the spent battery on the electric vehicle clockwise by 90° and then transfers it to the first battery charging box 2, which reverses the full-power battery. The hour hand is rotated by 90° and then mounted on the electric vehicle; or the person skilled in the art can make the power-changing robot 3 not rotate the battery for the spent battery and the full-charge battery according to specific needs, for example, when the power battery pack of the electric vehicle is horizontally oriented. When the shape is square.

It can be understood by those skilled in the art that the power-changing robot 3 rotates the battery after being taken out from the electric vehicle and then rotated 90° into the first battery charging box 2, so that the fully-charged battery in the first battery charging box 2 It is perpendicular to the spent battery on the power exchange platform 1, thereby reducing the length of the first battery charging box 2 in the X direction, effectively reducing the footprint of the first battery charging box 2, especially for the power battery It is a rectangular battery. Further, the electric vehicle is lifted by the lifting mechanism, so that the power-changing robot 3 can be moved to the lower side to change the power, so that the power-changing station of the present invention as a whole occupies only the positions of the two parking spaces.

Those skilled in the art can also understand that the charging stand 22 always has an empty battery charging position or has a battery placement position, so that the elevator 21 can first put the spent battery into the charging stand 22, and then full. The electric battery is taken out from the charging stand 22; or the structure of the power-changing robot 3 can be appropriately changed by a person skilled in the art so that it can accommodate two batteries (full-powered battery and low-powered battery) at the same time. When the power is changed, the power-changing robot 3 first transports the fully-charged battery to the lower side of the electric vehicle, then unlocks the spent battery from the electric vehicle, and then installs the fully-charged battery to the electric vehicle, and finally transports the spent battery. Up to the first battery charging box 2.

As shown in FIG. 5, when the electric vehicle has a high frequency of switching, and the battery in the first battery charging box 2 cannot meet the power-requiring requirement, the other of the power-changing platforms 1 symmetric with the first battery charging box 2 can also be used. The second battery charging box 4 is disposed on the side, and preferably, the second battery charging box 4 is fixedly connected to the power changing platform 1 by bolts. Further, the first battery charging box 2 and the second battery charging box 4 are the same, and both are exchanged with the electric vehicle by the power-changing robot 3.

Heretofore, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings, but it will be readily understood by those skilled in the art that the scope of protection of the present invention is apparent. It is not limited to these specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.

Claims

A chassis type power station for an electric vehicle, characterized in that the power station comprises:

a power exchange platform for parking and positioning an electric vehicle to be replaced;

a first battery charging box detachably fixed to one side of the power exchange platform, the first battery charging box for storing a battery and charging the battery;

a power changing robot capable of moving between the first battery charging box and the power changing platform, the power changing robot for transporting a spent battery on the electric vehicle to the first battery A fully charged battery in the charging case and the first battery charging box is mounted to the electric vehicle.
A chassis type power station for an electric vehicle according to claim 1, wherein said power station further includes a second battery charging box, said second battery charging box being detachably fixed to said power exchange platform On the other side, the second battery charging box is also used to store and charge the battery, and the power changing robot is also movable between the second battery charging box and the power changing platform, so that A spent battery on the electric vehicle is transported into the second battery charging box and a fully charged battery in the second battery charging box is mounted to the electric vehicle.
A chassis type power substation for an electric vehicle according to claim 1 or 2, wherein when the electric vehicle is replaced, the electric switching robot unloads and rotates the electric battery of the electric vehicle by 90° Storing into the first battery charging box or the second battery charging box, and removing the full battery in the first battery charging box or the second battery charging box and rotating in a reverse direction by 90° Go to the electric car.
The chassis type power station for an electric vehicle according to claim 1, wherein the power exchange platform is provided with:

a ramp, the ramp being pivotally connected to an end of the power exchange platform in a direction in which the electric vehicle enters, for driving the electric vehicle to the power exchange platform smoothly;

a drum set, the drum set is disposed on a parking base of the power exchange platform for fixing and positioning the electric vehicle in a direction in which the electric vehicle enters;

A pusher device is disposed on a side of the power exchange platform for positioning the electric vehicle in a direction perpendicular to the direction in which the electric vehicle enters.
The chassis type power station for an electric vehicle according to claim 4, wherein the power exchange platform is further provided with a lifting mechanism for locating the electric vehicle in a direction perpendicular to the ground. Raise and position.
A chassis type power station for an electric vehicle according to claim 5, wherein said lifting mechanism comprises a front wheel lifting mechanism and a rear wheel lifting mechanism, said front wheel lifting mechanism and said rear The wheel lift mechanisms work independently of each other such that the bottom surface of the battery can be level when the electric vehicle is lifted to a potential.
A chassis type power station for an electric vehicle according to claim 4, wherein said drum set includes a V-shaped drum set and a horizontal roller set, and when the electric vehicle is fixed to said power exchange platform, The front wheel is located on the V-shaped drum set, and the rear wheel is located on the horizontal drum set.
The chassis type power station for an electric vehicle according to claim 2, wherein both the first battery charging box and the second battery charging box are provided with:

a charging stand for placing and storing a battery;

A charger for charging a battery.
The chassis type power station for an electric vehicle according to claim 8, wherein an elevator is further disposed in the first battery charging box and the second battery charging box, and the elevator is used for The spent battery on the power-changing robot is reloaded onto the charging stand, and the fully-charged battery on the charging stand is transferred to the power-changing robot.
The chassis type power station for an electric vehicle according to claim 4, wherein the push rod device is provided with a guiding mechanism, and when the electric vehicle enters the power changing platform, the guiding mechanism is electrically The car plays a guiding role in the direction of travel.
A chassis type power station for an electric vehicle according to claim 2, characterized in that The first battery charging box and/or the second battery charging box are provided with a control cabinet and an operation screen electrically connected to each other, and the control cabinet is used for controlling the overall operation of the power station to realize an electric vehicle. The power-changing function is used for the operator to control the power-changing process of the power-changing station and/or the electric vehicle, so that the power-changing station can realize manual, semi-automatic or fully automatic operation.
A chassis type power changing method for an electric vehicle, characterized in that the method comprises the following steps:

Providing the power station of claims 2 to 11;

The reversible ramp of the power exchange platform is lowered;

The electric vehicle that needs to be replaced is driven over the reversible ramp to the power exchange platform until the front wheel of the electric vehicle enters the V-shaped drum set, and the rear wheel is stopped when it is carried on the horizontal roller set, and the V-shaped roller set performs X on the electric vehicle. Directional positioning;

The push rod device of the power exchange platform positions the electric vehicle in the Y direction;

The lifting mechanism lifts the electric vehicle to a preset height, and positions the electric vehicle in the Z direction while keeping the bottom surface of the battery horizontal;

The power changing robot moves to the bottom of the electric vehicle and unlocks the spent battery, and then removes from the power exchange platform to dock with the elevator;

The changing robot transfers the spent battery to the elevator, and the lift moves the spent battery into the charging stand for charging, and at the same time or after the full battery is moved from the charging stand into the elevator;

The power-changing robot removes the fully-charged battery from the elevator and moves it to the bottom of the electric vehicle to mount the fully-charged battery to the electric vehicle.
The chassis type power changing method for an electric vehicle according to claim 12, wherein the power changing robot rotates the spent battery by 90° after unlocking the battery.
A chassis type power changing method for an electric vehicle according to claim 13, wherein the power changing robot rotates the full battery in the reverse direction by 90° before mounting the full battery to the electric vehicle.
A chassis type power changing method for an electric vehicle according to claim 14, wherein after the full battery is mounted on the electric vehicle, the power changing robot is driven from the electric vehicle Move the bottom to the lift and stand by.
A chassis type power changing method for an electric vehicle according to claim 15, wherein after the power changing robot moves from the bottom of the electric vehicle to the lower side of the elevator, the lifting mechanism is lowered and the pusher device is retracted.
The chassis type power changing method for an electric vehicle according to claim 16, wherein after the lifting mechanism is lowered and the pusher device is retracted, the electric vehicle is driven away from the power exchange platform, and the turning ramp is stowed.