CN113752896B - Power conversion device, balancing method and power conversion station - Google Patents
Power conversion device, balancing method and power conversion station Download PDFInfo
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- CN113752896B CN113752896B CN202111111651.4A CN202111111651A CN113752896B CN 113752896 B CN113752896 B CN 113752896B CN 202111111651 A CN202111111651 A CN 202111111651A CN 113752896 B CN113752896 B CN 113752896B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 351
- 230000005540 biological transmission Effects 0.000 claims abstract description 105
- 230000005484 gravity Effects 0.000 claims abstract description 44
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/06—Supplying batteries to, or removing batteries from, vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The invention provides a power conversion device, a balancing method and a power conversion station, wherein the power conversion device comprises a base; the first grabbing mechanism and the second grabbing mechanism are arranged on the base side by side and can move up and down relative to the base; a transmission mechanism provided between the first gripping mechanism and the second gripping mechanism, the transmission mechanism being configured to make a moving direction of the first gripping mechanism opposite to a moving direction of the second gripping mechanism, and capable of converting a load gravity of either one of the first gripping mechanism and the second gripping mechanism into an upward acting force on the other; and the driving mechanism is used for providing power for the up-and-down movement of the first grabbing mechanism and the second grabbing mechanism. The problem of the energy loss that the power conversion device exists among the prior art is big is solved.
Description
Technical Field
The invention relates to the technical field of power conversion, in particular to a power conversion device, a balancing method and a power conversion station.
Background
The battery endurance problem is a main factor influencing the development of new energy vehicles or new energy operation machines, and at present, the battery endurance problem is mainly overcome from two aspects in the field, on one hand, the charging time is shortened by a quick charging technology, and the user endurance requirement is met; on the other hand, through setting up the power station that trades, accomplish the change of battery in trading the power station fast, satisfy user's continuous voyage demand.
At present, a vehicle roof crane type and an RGV side grabbing type power conversion device are generally adopted for power conversion of a power conversion station in the market, and lifting mechanisms for driving the grabbing mechanisms to move up and down are arranged in the power conversion device. Because the weight of the battery pack is large, the weight of related parts such as the grabbing mechanism is large in order to ensure the structural rigidity and strength of the power conversion device. In the power exchange process, the lifting mechanism needs to overcome dead weights of the grabbing mechanism, the battery pack and the like, the energy loss is large, and the service life of the lifting mechanism is low.
Therefore, how to solve the problem of large energy loss of the power conversion device in the prior art is an important technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a power conversion device, a balancing method and a power conversion station, which are used for solving the defect of high energy loss of the power conversion device in the prior art.
The invention provides a power conversion device, comprising:
a base;
the first grabbing mechanism and the second grabbing mechanism are arranged on the base side by side and can move up and down relative to the base;
a transmission mechanism provided between the first gripping mechanism and the second gripping mechanism, the transmission mechanism being configured to make a moving direction of the first gripping mechanism opposite to a moving direction of the second gripping mechanism, and capable of converting a load gravity of either one of the first gripping mechanism and the second gripping mechanism into an upward acting force on the other;
and the driving mechanism is used for providing power for the up-and-down movement of the first grabbing mechanism and the second grabbing mechanism.
According to the invention, the transmission mechanism comprises a first transmission cylinder, a second transmission cylinder and a connecting pipe fitting, wherein the first transmission cylinder is arranged between the first grabbing mechanism and the base, the second transmission cylinder is arranged between the second grabbing mechanism and the base,
the first transmission cylinder and the second transmission cylinder respectively comprise an upper cavity and a lower cavity which are formed by the separation of pistons, the connecting pipe fitting is communicated with the lower cavity of the first transmission cylinder and the lower cavity of the second transmission cylinder, and working media are filled in the lower cavity of the first transmission cylinder, the lower cavity of the second transmission cylinder and the connecting pipeline.
According to the power conversion device provided by the invention, the transmission mechanism comprises the first rack, the second rack and the transmission gear which rotates by the fixed shaft, the first rack and the second rack are arranged along the vertical direction and can move relative to the base along the vertical direction, the first rack is connected with the first grabbing mechanism, the second rack is connected with the second grabbing mechanism, and the first rack and the second rack are meshed with the transmission gear for transmission.
According to the power exchanging device provided by the invention, the driving mechanism is provided with a group, and the driving mechanism is arranged between one of the first grabbing mechanism and the second grabbing mechanism and the base.
According to the power conversion device provided by the invention, the driving mechanism comprises the linear transmission assembly arranged along the vertical direction, the fixed end of the linear transmission assembly is connected with the base, and one of the first grabbing mechanism and the second grabbing mechanism is connected with the moving end of the linear transmission assembly.
According to the power conversion device provided by the invention, the guide mechanisms are arranged between the first grabbing mechanism and the base and between the second grabbing mechanism and the base, and the guide mechanisms are used for guiding the up-and-down movement of the first grabbing mechanism and the second grabbing mechanism.
According to the power conversion device provided by the invention, the power conversion device further comprises a traveling mechanism, and the traveling mechanism is used for driving the base to move.
According to the power conversion device provided by the invention, the grabbing directions of the first grabbing mechanism and the second grabbing mechanism are the same and are perpendicular to the displacement direction of the base.
According to the power exchanging device provided by the invention, the grabbing directions of the first grabbing mechanism and the second grabbing mechanism are opposite,
the power conversion device further comprises a rotation mechanism, and the rotation mechanism is used for driving the base to rotate around a vertical line.
According to the power conversion device provided by the invention, the first grabbing mechanism and the second grabbing mechanism comprise a base, grabbing components and translating components, the translating components are arranged between the base and the grabbing components and used for driving the grabbing components to displace relative to the base, and the translating components of the first grabbing mechanism are parallel to the translating components of the second grabbing mechanism.
The invention also provides a balancing method which can be used for the power conversion device, the power conversion device comprises a first grabbing mechanism and a second grabbing mechanism which can move up and down and have opposite moving directions,
the balancing method includes utilizing the load gravity of one of the first and second grasping mechanisms to translate into an upward force on the other.
The invention also provides a power exchange station which comprises the power exchange device.
In the power exchanging device provided by the invention, the driving mechanism is used for providing power for the up-and-down movement of the first grabbing mechanism and the second grabbing mechanism. And a transmission mechanism is arranged between the first grabbing mechanism and the second grabbing mechanism, the movement direction of the second grabbing mechanism is opposite to that of the first grabbing mechanism, and the load gravity of any one of the first grabbing mechanism and the second grabbing mechanism can be converted into an upward acting force on the other one. When the first grabbing mechanism is required to move upwards, the load gravity of the second grabbing mechanism can directly or indirectly generate upward acting force on the first grabbing mechanism after passing through the transmission mechanism, the acting force is opposite to the load gravity of the first grabbing mechanism, partial load gravity of the first grabbing mechanism can be balanced, and the load of the driving mechanism is reduced. When the second grabbing mechanism needs to be moved upwards, the first grabbing mechanism moves downwards, the load gravity of the first grabbing mechanism can directly or indirectly generate upward acting force on the second grabbing mechanism after passing through the transmission mechanism, the acting force is opposite to the load gravity of the second grabbing mechanism, partial load gravity of the second grabbing mechanism can be balanced, and the load of the driving mechanism is reduced. So set up, above-mentioned drive mechanism's setting can utilize the first mechanism of snatching and the second snatchs the load gravity of one of them and balance another one's partial load gravity, reduces actuating mechanism's load, is favorable to reducing energy loss, extension actuating mechanism's life.
Further, in the balancing method provided by the invention, in the power changing process, the load gravity of one of the first grabbing mechanism and the second grabbing mechanism is utilized to be converted into an upward acting force on the other grabbing mechanism. Similar to the structural principle of the power exchanging device described above, the same offers various advantages as described above.
Further, the power exchanging station provided by the invention has the power exchanging device, so that the power exchanging station also has various advantages.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a power conversion device according to the present invention;
fig. 2 is a schematic diagram of the structural principle of the power conversion device provided by the invention;
fig. 3 is a schematic structural diagram of a power conversion device according to the present invention;
fig. 4 is a schematic diagram of a structural principle of the power conversion device provided by the invention;
FIG. 5 is a schematic view of the structure of the grasping assembly provided by the present invention;
reference numerals:
1: a first grasping mechanism; 2: a second grasping mechanism; 3: a driving mechanism;
4: a first transmission cylinder; 5: a second transmission cylinder; 6: a first rack;
7: a second rack; 8: a transmission gear; 9: a guide mechanism;
10: a walking mechanism; 11: a slewing mechanism; 12: a base;
13: a grabbing component; 14: a translation assembly; 15: rotating the grabbing structure;
16: hoisting a chain; 17: a floating locking electric cylinder; 18: a guide post;
19: an upper seat plate; 20: a lower seat plate; 21: and (5) slewing bearing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes a power conversion device according to an embodiment of the present invention with reference to fig. 1 to 5.
As shown in fig. 1 to 5, an embodiment of the present invention provides a power conversion device, which includes a base, a first grabbing mechanism 1, a second grabbing mechanism 2, a transmission mechanism and a driving mechanism 3, specifically, the first grabbing mechanism 1 and the second grabbing mechanism 2 are arranged on the base side by side and can move up and down relative to the base. The driving mechanism 3 is used for powering up-and-down movement of the first gripping mechanism 1 and the second gripping mechanism 2.
The above-described transmission mechanism is provided between the first grasping mechanism 1 and the second grasping mechanism 2, and is configured such that the moving direction of the first grasping mechanism 1 is opposite to the moving direction of the second grasping mechanism 2, and that the load gravity of either one of the first grasping mechanism 1 and the second grasping mechanism 2 can be converted into an upward acting force on the other.
When the first grabbing mechanism 1 needs to be moved upwards, the load gravity of the second grabbing mechanism 2 can directly or indirectly generate upward acting force on the first grabbing mechanism 1 after passing through the transmission mechanism. This acting force is opposite to the load weight of the first gripper mechanism 1, and can balance the partial load weight of the first gripper mechanism 1, which corresponds to a reduction in the load of the drive mechanism 3.
When the second grabbing mechanism 2 needs to be moved upwards, the first grabbing mechanism 1 moves downwards, the load gravity of the first grabbing mechanism 1 can directly or indirectly generate an upward acting force on the second grabbing mechanism 2 after passing through the transmission mechanism, the acting force is opposite to the load gravity of the second grabbing mechanism 2, part of the load gravity of the second grabbing mechanism 2 can be balanced, and the load of the driving mechanism 3 is reduced.
So set up, the setting of above-mentioned drive mechanism can utilize the load gravity of one of first snatch mechanism 1 and second snatch mechanism 2 to balance another's load gravity, reduces the load of actuating mechanism 3, is favorable to reducing energy loss, prolongs actuating mechanism 3's life.
When the first grabbing mechanism 1 grabs the battery pack, the load gravity of the first grabbing mechanism 1 is the gravity of the first grabbing mechanism 1 and the gravity of the battery pack, and when the first grabbing mechanism 1 does not grab the battery pack, the load gravity of the first grabbing mechanism 1 is the gravity of the first grabbing mechanism 1. Similarly, when the second grabbing mechanism 2 grabs the battery pack, the load gravity of the second grabbing mechanism 2 is the gravity of the second grabbing mechanism 2 and the gravity of the battery pack, and when the second grabbing mechanism 2 does not grab the battery pack, the load gravity of the second grabbing mechanism 2 is the gravity of the second grabbing mechanism 2.
In an embodiment of the present invention, the transmission mechanism may be configured as a fluid transmission, such as a hydraulic transmission or a pneumatic transmission, and refer to fig. 2. Specifically, the transmission mechanism includes a first transmission cylinder 4, a second transmission cylinder 5, and a connecting pipe fitting, and the first transmission cylinder 4 and the second transmission cylinder 5 each have a cylinder body and a piston rod that move relatively. The first transmission cylinder 4 is arranged between the first grabbing mechanism 1 and the base, the cylinder body of the first transmission cylinder 4 is connected with the base, and the piston rod of the first transmission cylinder 4 is connected with the first grabbing mechanism 1. The second transmission cylinder 5 is arranged between the second grabbing mechanism 2 and the base, the cylinder body of the second transmission cylinder 5 is connected with the base, and the piston rod of the second transmission cylinder 5 is connected with the second grabbing mechanism 2.
A piston connected with a piston rod is arranged in the cylinder body, and the piston divides the cavity of the cylinder body into an upper cavity above the piston and a lower cavity below the piston. The connecting pipe fitting is communicated with the lower chamber of the first transmission cylinder 4 and the lower chamber of the second transmission cylinder 5, and working media are filled in the lower chamber of the first transmission cylinder 4, the lower chamber of the second transmission cylinder 5 and the connecting pipe fitting.
When the first grabbing mechanism 1 needs to be moved upwards, the load gravity of the second grabbing mechanism 2 compresses working media through a piston rod and a piston of the second transmission cylinder 5, and the working media in the first transmission cylinder 4 and the working media in the second transmission cylinder 5 circulate, so that the working media generate upward acting force on the piston of the first transmission cylinder 4. This acting force is opposite to the load gravity of the first gripper mechanism 1, and can balance part of the load gravity of the first gripper mechanism 1, reducing the load of the driving mechanism 3.
When it is necessary to move the second gripper mechanism 2 upward, the first gripper mechanism 1 moves downward. Simultaneously, the load gravity of the first grabbing mechanism 1 compresses working media through a piston rod and a piston of the first transmission cylinder 4, and working media in the second transmission cylinder 5 circulate with working media in the first transmission cylinder 4, so that the working media generate upward acting force on the piston of the second transmission cylinder 5. This acting force is opposite to the load gravity of the second gripper mechanism 2, and can balance part of the load gravity of the second gripper mechanism 2, reducing the load of the driving mechanism 3.
If hydraulic cylinders are selected as the first transmission cylinder 4 and the second transmission cylinder 5, hydraulic oil can be selected as the working medium. If cylinders are selected as the first transmission cylinder 4 and the second transmission cylinder 5, the working medium may be high-pressure gas.
In the embodiment of the present invention, the transmission mechanism may also be provided in a mechanical transmission form, specifically, the transmission mechanism includes a first rack 6, a second rack 7 and a transmission gear 8, referring to fig. 3 and 4. The transmission gear 8 rotates with respect to the base fixed shaft. The first rack 6 and the second rack 7 are arranged in the vertical direction and are each movable in the vertical direction relative to the base. The first rack 6 is connected with the first grabbing mechanism 1, the second rack 7 is connected with the second grabbing mechanism 2, and the first rack 6 and the second rack 7 are in meshed transmission with the transmission gear 8. The first rack 6 and the second rack 7 are both arranged in the vertical direction and are respectively positioned at two sides of the transmission gear 8, and in the rotation process of the transmission gear 8, the moving direction of the first rack 6 is opposite to the moving direction of the second rack 7.
When the first grabbing mechanism 1 needs to be moved upwards, the second rack 7 has a downward movement trend due to the load gravity of the second grabbing mechanism 2, and then the first rack 6 has an upward movement trend through the transmission gear 8, so that an upward acting force is generated on the first grabbing mechanism 1. This acting force is opposite to the load weight of the first gripper mechanism 1, and can balance the partial load weight of the first gripper mechanism 1, which corresponds to a reduction in the load of the drive mechanism 3.
When it is necessary to move the second gripper mechanism 2 upward, the first gripper mechanism 1 moves downward. At the same time, the load gravity of the first grabbing mechanism 1 makes the first rack 6 have a downward movement trend, and then makes the second rack 7 have an upward movement trend through the transmission gear 8, so as to generate an upward acting force on the second grabbing mechanism 2. This acting force is opposite to the load weight of the second gripper mechanism 2, and can balance the partial load weight of the second gripper mechanism 2, which corresponds to a reduction in the load of the drive mechanism 3.
In the embodiment of the present invention, only one group of driving mechanisms 3 may be provided, so that the driving mechanism 3 is only connected with one of the first grabbing mechanism 1 and the second grabbing mechanism 2, and the other may be driven to move by the transmission mechanism. If the driving mechanism 3 drives the first grabbing mechanism 1 to move up and down, when the driving mechanism 3 drives the first grabbing mechanism 1 to move up, the first grabbing mechanism 1 can drive the second grabbing mechanism 2 to move down through the transmission mechanism; when the driving mechanism 3 drives the first grabbing mechanism 1 to move downwards, the first grabbing mechanism 1 can drive the second grabbing mechanism 2 to move upwards through the transmission mechanism.
The driving mechanism 3 may be provided in two groups to power the first gripping mechanism 1 and the second gripping mechanism 2, respectively.
In the embodiment of the present invention, the driving mechanism 3 includes a linear transmission assembly, and the linear transmission assembly is disposed along a vertical direction. The linear transmission assembly is provided with a fixed end and a movable end capable of moving relative to the fixed end, the fixed end is connected with the base, and one of the first grabbing mechanism 1 and the second grabbing mechanism 2 is connected with the movable end of the linear transmission assembly.
If the driving mechanism 3 drives the first grabbing mechanism 1 to move up and down, the moving end is connected with the first grabbing mechanism 1, and the moving end moves relative to the fixed end, so that the first grabbing mechanism 1 can be driven to move relative to the base.
If the driving mechanism 3 drives the second grabbing mechanism 2 to move up and down, the moving end is connected with the second grabbing mechanism 2, and the moving end moves relative to the fixed end, so that the second grabbing mechanism 2 can be driven to move relative to the base.
Specifically, the linear transmission assembly can be an electric cylinder or a double-acting oil cylinder.
It should be noted that, when the transmission mechanism is in a rack-and-pinion transmission mode, the driving mechanism 3 may be a motor that directly drives the transmission gear 8 to rotate, and the motor is in transmission connection with the transmission gear 8.
In the embodiment of the invention, a guide mechanism 9 is arranged between the first grabbing mechanism 1 and the base and between the second grabbing mechanism 2 and the base, and is used for guiding the up-and-down movement of the first grabbing mechanism 1 and the second grabbing mechanism 2. Specifically, the guide mechanism 9 may be provided in a form in which the guide post 18 and the guide bearing are engaged, or may be provided in a form of a linear guide.
In this embodiment, the first grabbing mechanism 1 and the second grabbing mechanism 2 have the same structure, and each of the first grabbing mechanism and the second grabbing mechanism comprises a base 12, a grabbing component 13 and a shifting component 14, and the base 12 is connected with a transmission mechanism. The grabbing component 13 is slidably connected with the base 12, and the translation component 14 is arranged between the base 12 and the grabbing component 13 and is used for driving the grabbing component 13 to move relative to the base 12. The translation assembly 14 of the first gripper mechanism 1 is parallel to the translation assembly 14 of the second gripper mechanism 2.
Specifically, the translation assembly 14 includes a gear, a rack, and a motor, the rack is connected with the base 12, the gear is rotatably disposed on the grabbing assembly 13 with a fixed shaft, the motor drives the gear to rotate, and the grabbing assembly 13 can be driven to move relative to the rack and the base 12 during rotation of the gear.
Guide structures such as guide rails can also be arranged between the grabbing component 13 and the base 12 to guide the movement of the grabbing component 13 relative to the base 12.
The grasping unit 13 may be configured as a top grasping structure that performs grasping operation on the battery pack from the top of the battery pack, or may be configured as a side grasping structure that performs grasping operation on the battery pack from the side of the battery pack.
The grabbing component 13 in this embodiment is configured as shown in fig. 5, and the grabbing component 13 is slidably connected to the base 12 through a support frame. The grabbing component 13 comprises a rotary grabbing structure 15, a lifting chain 16 and a floating locking electric cylinder 17, wherein the floating locking electric cylinder 17 and the lifting chain 16 are arranged between the rotary grabbing structure 15 and the supporting frame, a guide column 18 is arranged on the rotary grabbing structure 15, and a corresponding guide structure is also arranged on the battery pack.
The floating locking electric cylinder 17 is an electric cylinder arranged along the vertical direction, and one end of the electric cylinder is connected with the supporting frame. When a gap is reserved between the floating locking electric cylinder 17 and the rotary grabbing structure 15, the rotary grabbing structure 15 can float up and down, and when the guide post 18 is matched with the guide structure on the battery pack, the rotary grabbing structure 15 can float up and down, namely the floating locking electric cylinder 17 is in an unlocking state. By extending the electric cylinder, the other end of the electric cylinder can be abutted against the rotary grasping structure 15, and at this time, the position state of the rotary grasping structure 15 is fixed, and it is impossible to float up and down, that is, the floating locking electric cylinder 17 is in the locked state.
The rotary grabbing structure 15 comprises a support, a gripper connected with the support in a rotating mode and a motor for driving the gripper to rotate relative to the support, the gripper rotates in the vertical direction, and the gripper is L-shaped. The motor drives the grippers to rotate so as to adjust the relative positions of the grippers and the grabbing positions of the battery packs, and grabbing and releasing of the battery packs can be achieved.
The power conversion device in the embodiment of the invention further comprises the traveling mechanism 10, and the traveling mechanism 10 is used for driving the base to displace, so that the working area range of the power conversion device can be increased, and the scale of the power conversion station is favorably enlarged.
The travelling mechanism 10 comprises a pulley and a guide rail, wherein the guide rail is fixed in a working area of the power conversion device, the pulley is arranged below the base in a fixed shaft rotating manner, and the pulley is driven to rotate by a motor, and friction force is formed between the pulley and the guide rail, so that the pulley can move along the guide rail while rotating, and the base is driven to move relative to the guide rail.
The gripping directions of the first gripping mechanism 1 and the second gripping mechanism 2 may be the same or opposite. The gripping direction of the first gripping mechanism 1 and the second gripping mechanism 2 refers to the moving direction of the gripping module 13 when moving from the initial position to the gripping position on the seat 12.
When the grabbing directions of the first grabbing mechanism 1 and the second grabbing mechanism 2 are the same, the grabbing directions of the first grabbing mechanism 1 and the second grabbing mechanism 2 are perpendicular to the displacement direction of the base. The first grabbing mechanism 1 grabs a full-power battery pack, the second grabbing mechanism 2 is driven to align with an empty battery pack on the vehicle through the travelling mechanism 10 and the driving mechanism 3, the second grabbing mechanism 2 is controlled to grab the empty battery pack on the vehicle, the travelling mechanism 10 and the driving mechanism 3 are driven to align the first grabbing mechanism 1 with a battery pack mounting position on the vehicle, and the first grabbing mechanism 1 is controlled to place the full-power battery pack on the battery pack mounting position of the vehicle, so that the power conversion process is completed.
When the grabbing directions of the first grabbing mechanism 1 and the second grabbing mechanism 2 are opposite, the electricity changing device further comprises a rotation mechanism 11, and the rotation mechanism 11 is used for driving the base to perform rotation motion around a vertical line.
The base comprises an upper seat plate 19 and a lower seat plate 20, the slewing mechanism 11 can be arranged in a slewing bearing 21, and concretely comprises a slewing bearing 21 with a toothed structure on an outer ring, an inner ring of the slewing bearing 21 is connected with the lower seat plate 20, the outer ring is connected with the upper seat plate 19, and the slewing motion of the upper seat plate 19 relative to the lower seat plate 20 can be realized by utilizing the meshing transmission of a motor and a gear with the toothed structure of the outer ring.
The first grabbing mechanism 1 grabs a full-power battery pack, the second grabbing mechanism 2 is driven to align with the empty-power battery pack on the vehicle through the travelling mechanism 10 and the driving mechanism 3, the second grabbing mechanism 2 is controlled to grab the empty-power battery pack on the vehicle, the base is driven to rotate through the rotating mechanism 11, the first grabbing mechanism 1 is driven to align with the battery pack mounting position on the vehicle through the driving mechanism 3, and the first grabbing mechanism 1 is controlled to place the full-power battery pack on the battery pack mounting position of the vehicle, so that the power conversion process is completed.
The specific operation process of the power conversion device provided in this embodiment is as follows:
determining the position of a first target battery compartment, wherein a full-charge battery pack is stored in the first target battery compartment;
the traveling mechanism 10 is controlled to enable the first grabbing mechanism 1 to move to the vicinity of the first target battery compartment;
controlling the driving mechanism 3 to enable the first grabbing mechanism 1 to move to be corresponding to the height of the full-power battery pack along the vertical direction;
controlling the first grabbing mechanism 1 to grab the full-charge battery pack;
controlling the travelling mechanism 10 to enable the second grabbing mechanism 2 to be displaced to the vicinity of the vehicle;
the driving mechanism 3 is controlled to enable the second grabbing mechanism 2 to be displaced in the vertical direction to correspond to the height of an empty battery pack on the vehicle, and meanwhile, the first grabbing mechanism 1 is correspondingly displaced in the vertical direction;
controlling the second grabbing mechanism 2 to grab the empty battery pack;
the traveling mechanism 10 or the slewing mechanism 11 is controlled so that the first grabbing mechanism 1 is positioned near a battery pack mounting position of the vehicle;
controlling the driving mechanism 3 to enable the first grabbing mechanism 1 to move to be corresponding to the height of a battery pack mounting position of the vehicle in the vertical direction;
the first grabbing mechanism 1 is controlled to place and install the full-power battery pack on a battery pack installation position of the vehicle, so that the power conversion process is completed;
determining the position of a second target battery compartment, wherein the second target battery compartment is in an empty state;
the travelling mechanism 10 and the slewing mechanism 11 are controlled to enable the second grabbing mechanism 2 to move to the vicinity of the second target battery compartment;
controlling the driving mechanism 3 to enable the second grabbing mechanism 2 to move to be corresponding to the height of the second target battery compartment along the vertical direction;
and controlling the second grabbing mechanism 2 to place and install the empty battery pack in a second target battery compartment for charging.
On the other hand, the invention also provides a balancing method which can be used for the power conversion device. The battery charging device comprises a first grabbing mechanism 1 and a second grabbing mechanism 2, wherein the first grabbing mechanism 1 and the second grabbing mechanism 2 can both move up and down, and when the first grabbing mechanism 1 moves, the moving direction of the second grabbing mechanism 2 is opposite to the moving direction of the first grabbing mechanism 1.
The balancing method specifically comprises the steps of converting the load gravity of one of the first grabbing mechanism 1 and the second grabbing mechanism 2 into an upward acting force on the other grabbing mechanism, and balancing part of the load gravity of the other grabbing mechanism, so that the load of the driving mechanism 3 is reduced, the energy loss is reduced, and the service life of the driving mechanism 3 is prolonged. The deducing process of the beneficial effects of the balancing method in the embodiment of the present invention is substantially similar to that of the above-mentioned power conversion device, and therefore will not be repeated here.
In still another aspect, the present invention further provides a power exchange station, including the power exchange device provided in any of the foregoing embodiments. The power exchange station in the embodiment of the invention can balance the load gravity of one of the first grabbing mechanism 1 and the second grabbing mechanism 2 by utilizing the load gravity of the other, reduces the load of the driving mechanism 3, is beneficial to reducing the energy loss and prolongs the service life of the driving mechanism 3. The deduction process of the beneficial effects of the power exchange station in the embodiment of the present invention is substantially similar to the deduction process of the beneficial effects of the power exchange device, so that the description thereof is omitted herein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A power conversion apparatus, comprising:
a base;
the first grabbing mechanism and the second grabbing mechanism are arranged on the base side by side and can move up and down relative to the base, and each of the first grabbing mechanism and the second grabbing mechanism comprises a grabbing component capable of grabbing a battery pack;
a transmission mechanism provided between the first gripping mechanism and the second gripping mechanism, the transmission mechanism being configured to make a moving direction of the first gripping mechanism opposite to a moving direction of the second gripping mechanism, and capable of converting a load gravity of either one of the first gripping mechanism and the second gripping mechanism into an upward acting force on the other;
a driving mechanism for powering up-and-down movement of the first and second gripping mechanisms;
the transmission mechanism comprises a first transmission cylinder, a second transmission cylinder and a connecting pipe fitting, wherein the first transmission cylinder is arranged between the first grabbing mechanism and the base, the second transmission cylinder is arranged between the second grabbing mechanism and the base, the first transmission cylinder and the second transmission cylinder respectively comprise an upper cavity and a lower cavity which are separated by a piston, the connecting pipe fitting is communicated with the lower cavity of the first transmission cylinder and the lower cavity of the second transmission cylinder, and working mediums are filled in the lower cavity of the first transmission cylinder, the lower cavity of the second transmission cylinder and the connecting pipe fitting; or, drive mechanism includes first rack, second rack and dead axle pivoted drive gear, first rack with the second rack sets up along vertical direction and all can follow vertical direction for the base removes, first rack with first snatch the mechanism and be connected, the second rack with the second snatchs the mechanism and is connected, first rack with the second rack all with drive gear meshing transmission.
2. The power conversion device according to claim 1, wherein the driving mechanism is provided with a group, and the driving mechanism is provided between one of the first gripping mechanism and the second gripping mechanism and a base.
3. The power conversion device according to claim 2, wherein the driving mechanism includes a linear transmission assembly disposed in a vertical direction, a fixed end of the linear transmission assembly is connected to the base, and one of the first gripping mechanism and the second gripping mechanism is connected to a moving end of the linear transmission assembly.
4. The power conversion device according to claim 1, wherein guide mechanisms are provided between the first grabbing mechanism and the base and between the second grabbing mechanism and the base, and the guide mechanisms are used for guiding up-and-down movement of the first grabbing mechanism and the second grabbing mechanism.
5. The power conversion device according to claim 1, further comprising a traveling mechanism for driving the base to displace.
6. The power exchanging device of claim 5, wherein the gripping directions of said first gripping mechanism and said second gripping mechanism are the same and perpendicular to the displacement direction of said base.
7. The power exchanging device according to claim 1 or 5, wherein the gripping directions of the first gripping mechanism and the second gripping mechanism are opposite,
the power conversion device further comprises a rotation mechanism, and the rotation mechanism is used for driving the base to rotate around a vertical line.
8. The power conversion device according to claim 1, wherein the first grabbing mechanism and the second grabbing mechanism each comprise a base, a grabbing component and a translating component, the translating component is arranged between the base and the grabbing component and used for driving the grabbing component to displace relative to the base, and the translating component of the first grabbing mechanism is parallel to the translating component of the second grabbing mechanism.
9. A balancing method, which is characterized in that it can be used for a power exchanging device according to any one of claims 1-8, said power exchanging device comprising a first gripping means and a second gripping means which can be moved up and down and in opposite directions of movement,
the balancing method includes utilizing the load gravity of one of the first and second grasping mechanisms to translate into an upward force on the other.
10. A power exchange station comprising a power exchange device according to any one of claims 1-8.
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| CN202111111651.4A CN113752896B (en) | 2021-09-18 | 2021-09-18 | Power conversion device, balancing method and power conversion station |
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| CN103514792B (en) * | 2013-10-10 | 2016-03-23 | 南京航空航天大学 | Space six degree of freedom air supporting follow-up motion platform |
| CN108529404A (en) * | 2017-03-01 | 2018-09-14 | 华北水利水电大学 | A kind of build uses elevator |
| CN109515402B (en) * | 2018-12-27 | 2023-12-22 | 上海玖行能源科技有限公司 | Electric vehicle charging and battery changing system adopting cantilever beam |
| CN112477684B (en) * | 2020-12-10 | 2024-03-01 | 湖南融青能源科技有限公司 | Vehicle-mounted movable telescopic rail type charging and battery-replacing equipment |
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Effective date of registration: 20230712 Address after: 410100 201, Floor 2, Zhongchuang Building, Sany Industrial City, No. 1, Sany Road, Changsha Economic Development Zone Block, Changsha Pilot Free Trade Zone (Hunan), Hunan Province Patentee after: Sany Lithium Energy Co.,Ltd. Address before: 102206 5th floor, building 6, 8 Beiqing Road, Changping District, Beijing Patentee before: SANY HEAVY INDUSTRY Co.,Ltd. |