The application relates to a Chinese patent division of a power conversion system and a power conversion station comprising the same, wherein the application date is 2020, 1 month and 23 days, the application number is 2020100769368.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, when a battery is loaded on a battery-changing device in a battery-changing system, the battery-changing device is difficult to enter the bottom of an electric vehicle, the structure of the battery-changing station is complex, and the battery-changing efficiency is low.
The invention solves the technical problems by the following technical scheme:
A power conversion system characterized in that it comprises: the system comprises a vehicle carrying platform, first power conversion equipment and second power conversion equipment; the vehicle carrying platform is provided with a first working surface for carrying an electric vehicle, the vehicle carrying platform is provided with a second working surface for driving a first power conversion device and a second power conversion device, the second working surface is lower than the plane where the first working surface is located, the first power conversion device and the second power conversion device drive on the second working surface and alternately enter and exit from power conversion positions in the second working surface, and the first power conversion device and the second power conversion device detach or install batteries on the electric vehicle at the power conversion positions;
the second working surface is arranged between the power exchange position and a charging chamber, and the first power exchange equipment moves between the power exchange position and the charging chamber;
The charging chamber is arranged on one side of the vehicle carrying platform, and the first power exchanging equipment and the second power exchanging equipment only perform back-and-forth alternate motion on the one side.
The invention makes the second working surface and the first working surface in different planes under the normal state, thus generating enough height difference between the battery-carrying first battery-exchanging device or the second battery-exchanging device to enter the bottom of the electric vehicle in an unimpeded way. When the power is replaced, the first power replacing device or the second power replacing device directly enters the bottom of the electric vehicle and moves out with the detached battery. At this time, the opposite second battery changing device or first battery changing device can also be moved in with the battery ready for new replacement, thereby completing the replacement of the battery. The first power conversion equipment and the second power conversion equipment respectively act, and most of the actions of the first power conversion equipment and the second power conversion equipment are performed in the same time, so that the power conversion time is greatly shortened, and the power conversion efficiency is improved.
Preferably, the vehicle carrying platform is provided with a groove extending downwards, and the second working surface is arranged in the groove. The downwardly extending recess may allow the second work surface to be lower than the first work surface by a height difference from the first work surface such that the bottom of the electric vehicle is unobstructed when the first and second battery-carrying power conversion devices pass therethrough.
Preferably, the height of the second work surface is set so as to pass through the bottom of an electric vehicle that is carried on the first work surface in the case where the first power conversion device or the second power conversion device carries a battery.
Preferably, the first working surface comprises a front working surface and a rear working surface, and the groove is arranged between the front working surface and the rear working surface. The grooves are arranged between the front working face and the rear working face, so that the grooves are crossed with the front-rear direction, the driving paths of the electric vehicle are crossed with the driving paths of the first power exchanging equipment and the second power exchanging equipment, and the crossing points of the first power exchanging equipment and the second power exchanging equipment are located at the power exchanging positions.
Preferably, a battery transferring device and a charging frame are further arranged in the charging chamber. The battery replacing equipment delivers the replaced battery to the battery transferring device, and the battery is placed into the charging frame through the battery transferring device for charging. The battery transferring device also takes the charged battery out of the charging frame and transfers the battery to the battery replacing equipment for the battery replacing equipment to install the battery.
Preferably, the first working surface or the second working surface is arranged at the same height as the ground. When the first working surface is at the same height as the ground, geotechnical works such as excavation can enable the second working surface to sink and be lower than the first working surface. When the second working surface is at the same height as the ground, for example, the first working surface can be protruded and higher than the second working surface by means of a cement pouring clamping lane.
Preferably, a track is arranged on the second working surface for the first power conversion equipment and the second power conversion equipment to travel.
Preferably, the first working surface is provided with a vehicle positioning mechanism, and the vehicle positioning mechanism is used for positioning the electric vehicle on the first working surface.
Preferably, the first power exchanging apparatus is configured to detach the battery from the bottom of the electric vehicle and to move out of the underside of the electric vehicle or to move in the underside of the electric vehicle with the battery and to mount the battery into the bottom of the electric vehicle; the second battery changing device is arranged opposite to the first battery changing device, moves into the lower part of the electric vehicle with the battery, and installs the battery in the bottom of the automobile or removes the battery from the bottom of the electric vehicle and moves out of the lower part of the electric vehicle.
Preferably, the first working surface is a clamping lane protruding from the vehicle carrying platform, and/or the second working surface is a tunnel recessed from the vehicle carrying platform.
The battery transfer device is used for exchanging batteries between the charging frame and the first battery exchange device or the second battery exchange device, and the first battery exchange device and the second battery exchange device run between the battery transfer device and the battery exchange position.
The invention has the positive progress effects that: the invention ensures that the second working surface and the first working surface are positioned on different planes, which is beneficial to the first power exchanging equipment and the second power exchanging equipment carrying the battery to enter or leave the bottom of the electric vehicle without obstruction. The first power conversion equipment and the second power conversion equipment which are operated alternately shorten the power conversion time and improve the power conversion efficiency.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 to 7, the present embodiment discloses a power conversion system, where the power conversion system includes: the vehicle-mounted platform 3, the first power exchanging device 21 and the second power exchanging device 22; the vehicle-mounted platform 3 is provided with a first working surface A for bearing the electric vehicle, the vehicle-mounted platform 3 is provided with a second working surface B for the first power exchanging equipment 21 and the second power exchanging equipment 22 to run, and the second working surface B is lower than the plane of the first working surface A, wherein the first power exchanging equipment 21 and the second power exchanging equipment 22 run on the second working surface B and alternately enter and exit the power exchanging position in the second working surface B, and the first power exchanging equipment 21 and the second power exchanging equipment 22 detach or mount the battery on the electric vehicle at the power exchanging position.
As shown in fig. 1, the present invention makes the second working surface B and the first working surface a in different planes in a normal state, and thus creates a sufficient level difference between the battery-loaded first battery-powered device 21 or the second battery-powered device 22 to allow unimpeded entry into the bottom of the electric vehicle 1. Wherein, at the time of power change, the first power change device 21 or the second power change device 22 directly enters the bottom of the electric vehicle 1 and is removed with the detached battery. The opposite second battery-changing device 22 or first battery-changing device 21 can also be moved in with the battery ready for a new change, so that the battery change is completed. The first power exchanging device 21 and the second power exchanging device 22 respectively act, and most of the actions of the first power exchanging device 21 and the second power exchanging device are performed in the same time, so that the power exchanging time is greatly shortened, and the power exchanging efficiency is improved. The second working surface B is lower than the first working surface a, and replacement of the battery can be completed without lifting the electric vehicle.
As shown in fig. 1, the vehicle platform 3 has a downwardly extending groove 31, and the second working surface B is disposed in the groove 31. The downwardly extending recess 31 may allow the second work surface B to be lower than the first work surface a by a height difference from the first work surface a such that the bottom of the electric vehicle 1 is not obstructed when the battery-loaded first and second power exchanging devices 21 and 22 pass therethrough.
As shown in fig. 1, the height of the second work surface B is set so as to pass through the bottom of the electric vehicle carried on the first work surface a in the case where the first power exchanging device 21 or the second power exchanging device 22 carries a battery.
As shown in fig. 1, the first working surface a includes a front working surface and a rear working surface, and the groove 31 is provided between the front working surface and the rear working surface. By disposing the groove 31 between the front face and the rear face, the groove 31 is caused to intersect with the front-rear direction, so that the traveling path of the electric vehicle 1 intersects with the traveling paths of the first battery changing device 21 and the second battery changing device 22, and the intersection of the two is at the battery changing position.
As shown in fig. 1 and 2, the second working surface B is disposed between the power exchanging position and a charging chamber 6, and the first power exchanging device 21 moves between the power exchanging position and the charging chamber 6. A battery transfer device and a charging rack can be further arranged in the charging chamber 6. The battery replacing equipment delivers the replaced battery to the battery transferring device, and the battery is placed into the charging frame through the battery transferring device for charging. The battery transferring device also takes the charged battery out of the charging frame and transfers the battery to the battery replacing equipment for the battery replacing equipment to install the battery.
As shown in fig. 2, the charging chambers 6 of the present embodiment may be provided on both left and right sides of the vehicle-mounted platform 3. The first and second battery changing devices 21 and 22 on both sides are moved between the charging chambers 6 on both sides and the battery changing position, respectively. As shown in fig. 3, the charging chamber 6 may be disposed on one side of the vehicle platform 3, and the first power exchanging device 21 and the second power exchanging device 22 may alternately move back and forth only on one side thereof. When the battery replacement devices are arranged on two sides of fig. 2, a battery replacement waiting position 7 is arranged between the charging chamber 6 and the battery replacement vehicle 1, when the first battery replacement device 21 is used for battery removal at the battery replacement position, the second battery replacement device 22 can carry the fully charged battery to wait for the first battery replacement device 21 to leave the battery replacement position at the battery replacement waiting position 7, and the second battery replacement device 22 enters the battery replacement position to install the battery.
In this embodiment, the first working surface a or the second working surface B is set to be equal in height to the ground. When the first working surface A is at the same height as the ground, the second working surface B can be sunk and lower than the first working surface A in geotechnical work such as excavation. When the second working surface B is at the same height as the ground, for example, the cement pouring clip lane 32 may be formed in such a manner that the first working surface a protrudes and is higher than the second working surface B. As shown in fig. 1, the first working surface a of the present embodiment is a lane 32 protruding from the vehicle platform 3, and the second working surface B is a groove 31 recessed from the vehicle platform 3.
In this embodiment, the second working surface B is further provided with a track for the first power conversion device 21 and the second power conversion device 22 to travel.
In the present embodiment, the first power exchanging apparatus 21 is provided to detach the battery from the bottom of the electric vehicle 1 and to move out below the electric vehicle 1 or to move in below the electric vehicle 1 with the battery and to mount the battery into the bottom of the electric vehicle 1; the second battery exchanging apparatus 22 is provided such that the battery is moved under the electric vehicle 1 with the battery being carried opposite to the first battery exchanging apparatus 21 and the battery is mounted in the bottom of the automobile or the battery is detached from the bottom of the electric vehicle 1 and is moved under the electric vehicle 1.
As shown in fig. 4 and 5, the first power exchanging device 21 and the second power exchanging device take the first power exchanging device 21 as an example, and the first power exchanging device 21 includes: chassis 211, fixed disc 212, mobile disc 213, two hydraulic drive units 214 and a scissor support structure.
As shown in fig. 4, a fixed tray 212 is provided on the base tray 211 and movable up and down with respect to the base tray 211, and a movable tray 213 is provided above the fixed tray 212 and movable horizontally with respect to the fixed tray 212. Two hydraulic drive units 214 are provided at both side portions of the fixed disk 212, respectively. Both hydraulic drive units 214 are connected to the movable tray 213 and drive the movable tray 213 to horizontally move with respect to the fixed tray 212.
In the present embodiment, only two hydraulic drive units 214 are provided, but the present invention is not limited thereto. It is also possible to provide more than three hydraulic driving units 214 for driving the movable tray 213 to move horizontally, which also achieves the above-mentioned effect, i.e., to ensure the force balance to prevent overload.
As shown in fig. 4 and 5, the chassis 211 and the fixed disk 212 are connected by a scissor type support structure 215, and the scissor type support structure 214 includes support arms disposed in a crossing manner, one end of each support arm being slidably hinged to the fixed disk 212, and the other end of each support arm being fixedly hinged to the chassis 211. The upward expansion and downward folding of the scissor support structure 215 is achieved by driving the support arm to rotate about a hinge point with the chassis 211, thereby achieving the lifting of the fixed tray 212.
As shown in fig. 6 and 7, the first working surface a of the present embodiment may further be provided with a vehicle positioning mechanism 4, and the vehicle positioning mechanism 4 is used to position the electric vehicle 1 on the first working surface a. The vehicle positioning mechanism 4 includes a front stopper 41 and a rear stopper 42, wherein the front stopper 41 is used for limiting the forward movement tendency of the wheels of the electric vehicle 1, the rear stopper 42 is used for limiting the rearward movement tendency of the wheels of the electric vehicle 1, and the electric vehicle 1 is limited between the front stopper 41 and the rear stopper 42 after passing the rear stopper 42.
As shown in fig. 6 and 7, the vehicle positioning mechanism 4 further includes a left positioning member 43 and a right positioning member 44, wherein the left positioning member 43 is at least used for limiting a movement tendency of the wheels of the electric vehicle to the left, and the right positioning member 44 is at least used for limiting a movement tendency of the wheels of the electric vehicle to the right. The left positioning piece 43 and the right positioning piece 44 together restrict the position of the wheel in the left-right direction.
As shown in fig. 6 and 7, the vehicle positioning mechanism 4 further includes a first guide portion 45 provided on the left or right side of the positioning assembly 4; the first guiding portion 45 is used for guiding the wheels of the electric vehicle before the wheels of the electric vehicle are positioned by the positioning assembly 4, so that the wheels of the electric vehicle can move on a specific route.
As shown in fig. 7, the vehicle platform 3 of the present embodiment further includes a guide member 5. The guiding component 5 includes a driving guiding component 51 and a centering guiding component 52, where the driving guiding component 51 is disposed on the vehicle platform 3 and is used to guide and keep the wheels of the electric vehicle 1 on the above-mentioned preset route, the centering guiding component 52 is disposed on the vehicle platform 3 and is located on the left side or the right side of the driving guiding component 51, and the centering guiding component 52 is used to coordinate with the driving guiding component 51 to center the wheels of the electric vehicle 1 on the preset route.
The embodiment also discloses a power exchange station, which comprises the power exchange system, a battery transfer device and a charging frame, wherein the battery transfer device is used for exchanging batteries between the charging frame and the first power exchange device 21 or the second power exchange device 22, and the first power exchange device 21 and the second power exchange device 22 run between the battery transfer device and the power exchange position.
The invention ensures that the second working surface and the first working surface are positioned on different planes, which is beneficial to the first power exchanging equipment and the second power exchanging equipment carrying the battery to enter or leave the bottom of the electric vehicle without obstruction. The first power conversion equipment and the second power conversion equipment which are operated alternately shorten the power conversion time and improve the power conversion efficiency.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.