Transmission mechanism of battery transfer equipment, battery transfer equipment and battery replacing station

Abstract

The invention provides a transmission mechanism of battery transfer equipment, the battery transfer equipment is arranged close to a battery rack, the battery transfer equipment comprises a supporting part, a battery taking and placing mechanism and a transmission mechanism, and the transmission mechanism comprises multiple groups of gear rack transmission units, the gears correspond to the end corner positions of the battery taking and placing mechanism and are arranged between the supporting part and the battery taking and placing mechanism, the gears are connected with the battery taking and placing mechanism, the racks are arranged on the supporting part in the vertical direction, and the gears and the racks are meshed with each other; the two driving units are arranged on the two sides of the battery taking and placing mechanism correspondingly so as to drive the gear and rack transmission units located at the two ends of the same side of the battery taking and placing mechanism to synchronously drive the battery taking and placing mechanism to ascend and descend. According to the transmission mechanism, synchronous motion control can be conducted on the four ends of the battery taking and placing mechanism only through the two driving units, the use number of the driving units is effectively reduced, meanwhile, the overall size of the transmission mechanism is reduced, and the synchronism of lifting motion of the battery transfer equipment is improved.

Description

[0001] This application is a division of a Chinese invention patent with an application date of December 2, 2021, application number 202111461277.0, and name “Transmission mechanism of battery transport equipment, battery transport equipment and battery swap station”. Technical Field

[0002] The invention relates to a transmission mechanism of battery transport equipment, battery transport equipment and a battery replacement station. Background Art

[0003] As the battery charging time of electric vehicles is limited, quick-swap electric vehicles have been accepted by more and more users. It is only necessary to replace the depleted battery and install a fully charged battery in the battery swap station or energy storage station, saving a long battery charging time. The battery swap station or energy storage station is equipped with: battery swap equipment for battery removal or installation, battery transport equipment for transporting batteries, and charging equipment for charging batteries.

[0004] The existing battery transfer device usually realizes lifting and moving through a guide mechanism, a transmission mechanism and a drive mechanism, so as to transfer the battery between the battery positions. The Chinese patent application with publication number CN110901601A discloses an AGV charging station, which adopts the principle of multi-axis linkage and the design of a multi-axis system, specifically exchanges and charges the battery in the X-axis, Y-axis, Z-axis and the direction of battery pulling and pushing, removes the battery from the AGV trolley and puts the battery into the load-bearing frame. The Chinese patent application with publication number CN106043247A discloses a modular and expandable battery exchange station or energy storage station equipment and a battery rack, in which the battery storage modules in the battery rack are stacked together in a building block manner, and the battery transfer device can travel through the battery storage module. After the battery transfer device carries the battery to the vacant battery storage module position inside the battery rack, the lifting device lifts the battery transfer platform upward, and the battery transfer platform drives the battery placed thereon to move vertically upward, and the battery is fixed in the battery storage layer through the battery locking mechanism, and then the battery is charged by the electrical layer. A Chinese patent application with publication number CN208181025U discloses a battery bin and a new energy vehicle battery swap station, wherein a lift can dock and transfer batteries between an RGV trolley and a battery rack. When replacing batteries for new energy vehicles, the battery transfer device of the lift can transfer batteries between the new energy vehicle and the battery rack along the Y direction, can transfer batteries to the battery rack along the X direction or dock batteries from the battery rack, and the lifting platform itself can lift batteries along the Z direction so that the batteries are horizontally aligned with the battery rack or the new energy vehicle.

[0005] However, the lifting and lowering of the existing transfer device is achieved through the meshing cooperation of gears and racks in the transmission mechanism. In order to drive the gears to rotate, each gear is equipped with a driving mechanism (such as a motor). However, the overall volume of the transmission mechanism of this structure is large, and each gear operates independently, which can easily cause the lifting and lowering of the transfer device to be out of sync, thereby affecting the normal operation of the battery swap station. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the transmission mechanism of the transfer device is large in overall volume and the gears operate independently, which easily causes the asynchronous lifting and lowering of the transfer device, and to provide a transmission mechanism for a battery transfer device, a battery transfer device and a battery swap station.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A transmission mechanism for a battery transfer device, the battery transfer device is arranged near a battery rack having a plurality of battery racks for storing batteries, the battery transfer device comprises a support portion arranged adjacent to the battery rack, a battery pick-and-place mechanism for picking up and placing batteries relative to any battery position of the battery rack, and the transmission mechanism for driving the battery pick-and-place mechanism to move up and down, wherein the transmission mechanism comprises: a plurality of groups of rack-and-pinion transmission units, which are arranged corresponding to the end angle positions of the battery pick-and-place mechanism and are respectively arranged between the support portion and the battery pick-and-place mechanism, the gear being connected to the battery pick-and-place mechanism, the rack being arranged on the support portion in a vertical direction, and the gear and the rack being meshed with each other; and two driving units, which are respectively arranged on both sides of the battery pick-and-place mechanism to drive the rack-and-pinion transmission units located at both ends of the same side of the battery pick-and-place mechanism to synchronously drive the battery pick-and-place mechanism to move up and down.

[0009] With the above structure, the transmission mechanism adopts a gear rack transmission unit, which effectively combines the stable transmission and high transmission efficiency of the gear rack with the working scene of the battery transport equipment. The gear rack transmission unit can keep the battery pick-up and placement process of the battery pick-up and placement mechanism stable and safe, and improve the battery pick-up and placement efficiency. At the same time, the present invention only uses two drive units to perform synchronous motion control on the four ends of the battery pick-up and placement mechanism, which not only effectively reduces the number of drive units used, but also reduces the overall volume of the transmission mechanism, and improves the synchronization of the lifting and lowering motion of the battery transport equipment.

[0010] Preferably, the driving unit comprises: a synchronous shaft connected to the gears of the rack and pinion transmission unit at both ends; and a driving motor for driving the synchronous shaft to rotate, and each of the gears is passed through the synchronous shaft and rotates coaxially with the synchronous shaft.

[0011] By adopting the above structure, the synchronization shaft enables one side of the battery picking and placing mechanism to use only one drive motor to simultaneously control two sets of gear rack transmission units to work, so that the gears on one side of the battery picking and placing mechanism can be lifted and moved synchronously and uniformly along the support part. At the same time, such a structure can simplify the overall structure of the transmission mechanism, thereby achieving the beneficial technical effect of reducing the occupied space and reducing the manufacturing cost.

[0012] Preferably, the driving unit further comprises a driving wheel and a driven wheel respectively sleeved on the output shaft of the driving motor and the synchronous shaft, and a synchronous belt driving between the driving wheel and the driven wheel.

[0013] With the above structure, the use of a belt drive between the drive motor and the synchronous shaft can effectively reduce the precision requirements for manufacturing and installation of the drive mechanism, which is beneficial to reducing manufacturing costs and facilitating disassembly, assembly and maintenance by operators.

[0014] Preferably, the transmission mechanism also includes an anti-tooth disengagement assembly, which includes a plurality of back wheel groups. The plurality of back wheel groups are respectively arranged corresponding to the rack and pinion transmission units and fixed at preset positions of the battery picking and placing mechanism to locate the position of the gear in each group of the rack and pinion transmission units relative to the rack.

[0015] With the above structure, the anti-tooth-off assembly of the transmission mechanism sets a back wheel group at the position corresponding to each gear rack transmission unit, thereby limiting the position of the gear relative to the rack, thereby improving the transmission effect and operation stability of the gear rack transmission unit.

[0016] Preferably, each of the back wheel assemblies includes a back wheel attached to the back side of the corresponding rack at a preset angle and a back wheel on the side of the rack facing the battery placement mechanism.

[0017] The above structure is adopted, by setting a back wheel located on the back of the rack, and using the two back wheels in the back wheel group to limit the vertical and horizontal directions of the tooth surface of the gear relative to the rack, so as to ensure that the gear can mesh on the tooth surface and will not disengage from the vertical and horizontal directions, so that the gear can maintain stable meshing with the rack, and the transmission is more stable. Among them, the battery pick-up and placement mechanism is clamped on the rack from three directions by the two back wheels of the gear and the back wheel group, which can also reduce the stress on the gear and make the gear less likely to be damaged. Compared with the back wheel of the back wheel group that limits the position from other directions, changing the limit from the other side of the gear relative to the rack to limiting from the back and side respectively also reduces the volume of the battery transfer equipment, reduces the occupied space, and reduces the cost of the battery swap station.

[0018] At the same time, a back wheel set is installed on the upper and lower sides of the contact position between the gear and the rack. When the gear rolls up or down on the rack, the forces on the upper and lower sides of the meshing position between the gear and the rack are balanced, which is conducive to ensuring that the stress distribution when the gear and the rack are meshing is always consistent, and is conducive to improving the service life of the gear and the rack. At the same time, the upper and lower sides of the vertical direction of the battery pick-up and placement mechanism are supported by back wheels on the support part, which is conducive to making the battery pick-up and placement mechanism run more smoothly during the lifting process, ensuring that its contact surface with the battery always remains horizontal.

[0019] Preferably, the transmission mechanism further comprises a mounting seat, the mounting seat is fixed to two sides of the battery pick-and-place mechanism, and the synchronization shaft and the anti-slipping tooth assembly are both mounted on the mounting seat.

[0020] By adopting the above structure, a mounting seat is provided on the battery removal and placement mechanism for fixing the synchronous shaft and the anti-tooth-off assembly, so that the transmission mechanism such as the synchronous shaft and the anti-tooth-off assembly can be better fixed together, thereby preventing the gear connected to the synchronous shaft from being displaced relative to the back wheel group of the anti-tooth-off assembly during long-term use, thereby affecting the meshing of the gear with the rack.

[0021] Preferably, the transmission mechanism further comprises a bearing, an inner ring of the bearing is sleeved on the synchronous shaft, and an outer ring of the bearing is fixed on the mounting seat.

[0022] With the above structure, by providing the bearing, the rotation of the synchronization shaft is reduced without affecting the lifting and lowering movement of the battery taking and placing mechanism along the support portion.

[0023] Preferably, the bearing is a spherical bearing or a ball bearing.

[0024] By adopting the above structure, by setting the bearing as a spherical bearing or a spherical bearing, the situation where the gears of multiple gear rack transmission units are not aligned when rotating can be overcome, thereby achieving the beneficial effect of overcoming the coaxiality error and ensuring the stable operation of the synchronous shaft.

[0025] Preferably, the side of the support portion facing the battery rack is fixed to the battery rack as an integral structure via a connecting unit.

[0026] By adopting the above structure, the support part and the battery rack are fixed into an integrated structure. The battery rack can help the support part to bear part of the load, so that the structural strength requirement of the support part itself is further reduced, and the structure and material thickness of the support part can be simplified to achieve the purposes of reducing costs and weight.

[0027] Preferably, the connecting unit has a first mounting plate and a second mounting plate which are arranged at an angle relative to each other, the first mounting plate is used to be connected to the battery rack, and the second mounting plate is connected to a side surface of the supporting portion.

[0028] With the above structure, the connection unit is used to have mounting plates connected to the battery rack and the support in different directions, so as to facilitate installation by construction personnel in different directions, so that the battery rack remains connected and fixed relative to the support of the battery transport equipment.

[0029] Preferably, the battery transfer equipment also includes an anti-fall mechanism, which has a first state and a second state. In the first state, the anti-fall mechanism is engaged with the synchronization shaft to limit the battery picking and placing unit; in the second state, the anti-fall mechanism is away from the synchronization shaft, and the synchronization shaft rotates normally.

[0030] By adopting the above structure, when the transmission mechanism operates normally, the synchronous shaft of the transmission mechanism remains disengaged to avoid affecting the transmission mechanism driving the battery pick-up and placement mechanism to rise and fall; when special circumstances occur, the anti-fall mechanism limits the rotation of the synchronous shaft by engaging with the synchronous shaft, thereby limiting the position of the battery pick-up and placement mechanism to achieve the purpose of anti-falling.

[0031] A battery transfer device, characterized in that the battery transfer device is arranged near a battery rack having multiple battery racks for storing batteries, and includes a support portion arranged adjacent to the battery rack, a battery pick-up and placement mechanism for picking up and placing batteries relative to any battery position of the battery rack, a transmission mechanism for driving the battery pick-up and placement mechanism to rise and fall, and a driving mechanism for providing power; one transmission mechanism is arranged on each side of the battery pick-up and placement mechanism.

[0032] The battery transfer equipment achieves the beneficial technical effect of streamlining the overall structure of the battery transfer equipment and reducing the overall footprint of the battery transfer equipment and lowering the manufacturing cost by setting the specific structure of the transmission mechanism; and, by setting the specific structure of the transmission mechanism, it can ensure that the battery picking and placing mechanism can be raised and lowered synchronously and uniformly along the support part to ensure the normal operation of the battery swap station.

[0033] Preferably, the support portion of the battery transport device is a frame structure, the frame structure includes a column arranged along a vertical direction, and the rack is arranged on a side surface of the column along the vertical direction.

[0034] With the above structure, the support part can effectively reduce the construction cost of the support part while ensuring its own structural stability.

[0035] A battery swap station is provided for replacing batteries of electric vehicles, wherein the battery swap station adopts the battery transfer equipment described above.

[0036] The battery swap station achieves the beneficial technical effect of streamlining the overall structure of the battery swap station and reducing the overall floor space of the battery swap station and lowering the manufacturing cost by setting the specific structure of the transmission mechanism; and by setting the specific structure of the transmission mechanism, it can ensure that the battery picking and placing mechanism can be raised and lowered synchronously and uniformly along the support part to ensure the normal operation of the battery swap station.

[0037] The positive and progressive effects of the present invention are:

[0038] The transmission mechanism of the battery transport equipment adopts a gear rack transmission unit, which effectively combines the characteristics of stable transmission and high transmission efficiency of the gear rack with the working scene of the battery transport equipment. The gear rack transmission unit can keep the battery pick-up and placement process of the battery pick-up and placement mechanism stable and safe, and improve the efficiency of battery pick-up and placement. At the same time, the present invention only uses two drive units to perform synchronous motion control on the four ends of the battery pick-up and placement mechanism, which not only effectively reduces the number of drive units used, but also reduces the overall volume of the transmission mechanism, and improves the synchronization of the lifting and lowering motion of the battery transport equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The figure is a schematic diagram of the structure of a battery swap station according to an embodiment of the present invention.

[0040] Figure 2 It is a schematic structural diagram of a battery transport device according to an embodiment of the present invention.

[0041] Figure 3 It is a schematic diagram of the partial structure of a battery transport device according to an embodiment of the present invention.

[0042] Figure 4 It is a structural schematic diagram of a transmission mechanism of a battery transport device according to an embodiment of the present invention.

[0043] Figure 5 The figure is a schematic structural diagram of an anti-tooth-off assembly according to an embodiment of the present invention.

[0044] Figure 6 The figure is a schematic diagram of the layout position of the back wheel relative to the rack according to an embodiment of the present invention.

[0045] Figure 7 It is a schematic structural diagram of a mounting base according to an embodiment of the present invention.

[0046] Figure 8 Schematic diagram of the structure of the anti-falling mechanism of one embodiment of the present invention (I).

[0047] Fig. 9 This is a structural schematic diagram of an anti-falling mechanism according to an embodiment of the present invention (II).

[0048] Battery swap station 100

[0049] The first battery exchange module 101, the driving lane 102, the second battery exchange module 103, the battery transfer device 10

[0050] Battery rack 20

[0051] Support part 1

[0052] Column 11

[0053] Rod 12

[0054] Battery pick-and-place mechanism 2

[0055] Transmission mechanism 3

[0056] Rack and pinion unit 31

[0057] Gear 311

[0058] Rack 312

[0059] Drive unit 32

[0060] Synchronous shaft 321

[0061] Drive motor 322

[0062] Driving wheel 323

[0063] Driven wheel 324

[0064] Synchronous belt 325

[0065] Bearing seat 326

[0066] Anti-slip teeth component 4

[0067] Back wheel set 41

[0068] Back wheel 411

[0069] Mounting Seat 5

[0070] Back wheel mounting surface 51

[0071] Bearing mounting surface 52

[0072] Connection unit 6

[0073] First mounting plate 61

[0074] Second mounting plate 62

[0075] Anti-fall mechanism 7

[0076] Fixed seat 71

[0077] Limit rod 72

[0078] Elastic member 73

[0079] Contact wheel 74

[0080] Tooth 75

[0081] Anti-fall wheel 76

[0082] Counterweight mechanism 8

[0083] Guide wheel 81 DETAILED DESCRIPTION

[0084] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0085] The present invention provides a battery swap station 100, which is used to swap batteries for electric vehicles. The structure of the battery swap station 100 is as follows: Figure 1 As shown, in this embodiment, the battery swap station 100 includes a first battery swap module 101, a driving lane 102, and a second battery swap module 103 from left to right. When the electric vehicle to be replaced enters and stops at a specific position in the driving lane 102, the battery swap cart (not shown in the figure) removes the battery from the bottom of the vehicle and moves it to the left or right to the first battery swap module 101 or the second battery swap module 103. Here, the transportation of the battery to the second battery swap module 103 is taken as an example: after the battery swap cart moves the battery to the second battery swap module 103, the battery transfer equipment 10 in the second battery swap module 103 removes the battery from the battery swap cart and places it in a battery compartment in the battery rack 20, and docks with the battery through the electrical socket in the battery compartment to charge the battery. Afterwards, the battery transfer equipment 10 takes out another fully charged battery from another battery compartment on the battery rack 20 and transports the battery to the battery swap cart. The battery swap cart transports the battery to the bottom of the vehicle by horizontal movement and installs it on the vehicle to achieve the purpose of battery swap.

[0086] The structure of the battery transport device 10 in this embodiment is as follows Figure 2 The battery shown, the battery transfer equipment 10 includes, wherein, the support part 1 is arranged adjacent to the battery rack 20, or is directly connected to the battery rack 20, the battery taking support part 1, the battery taking and placing mechanism 2 and the transmission mechanism 3. The placement mechanism is used to take and place the battery relative to any battery position in the battery rack 20, and the transmission mechanism 3 is used to drive the battery taking and placing mechanism 2 to move up and down relative to the support part 1, so as to achieve the purpose of moving the battery in the vertical direction.

[0087] In this embodiment, the support part 1 is a frame structure formed by a combination of tubular steel components such as columns 11 and beams. The top and bottom ends of the support part 1 are fixedly connected to the top and bottom surfaces of the battery swap station 100 through connectors, respectively, so as to share part of the impact and load caused by the battery pick-up and placement mechanism 2 picking up and placing batteries or lifting and moving through the connection with the battery swap station 100, thereby ensuring the operational reliability of the battery transport equipment 10. The structural form of the support part 1 effectively reduces the manufacturing cost of the support part 1 while ensuring its own structural stability. The battery pick-up and placement mechanism 2 can be driven by the transmission mechanism 3 to perform vertical lifting and lowering along the support part 1 to pick up and replace batteries on different layers of the battery rack 20.

[0088] Specific as Figure 3 and Figure 4 As shown, in this embodiment, the transmission mechanism 3 of the battery transport device 10 includes four sets of gear rack transmission units 31 and two driving units 32. The four sets of gear 311 and rack 312 units are respectively arranged corresponding to the end angle positions of the battery pick-up and placement mechanism 2, specifically, they are arranged on the surfaces of four columns 11 located at the end angle positions, and are distributed between the columns 11 and the battery pick-up and placement mechanism 2. Among them, the gear 311 of the gear rack transmission unit 31 is connected to the battery pick-up and placement mechanism 2, and the rack 312 is arranged on the side surface of the column 11 along the vertical direction, and the gear 311 and the rack 312 are kept in a mutually meshing state.

[0089] Two driving units 32 are respectively arranged on the left and right sides of the battery pick-and-place mechanism 2, and each driving unit 32 is used to drive the gear rack transmission unit 31 located at both ends of the same side of the battery pick-and-place mechanism 2, so as to achieve the purpose of the synchronous belt 325 driving the battery pick-and-place mechanism 2 to move up and down relative to the support part 1. That is, when the driving unit 32 is running, the driving unit 32 will drive the gear 311 to roll on the rack 312, and the gears 311 installed at the four ends of the battery pick-and-place mechanism 2 drive the battery pick-and-place mechanism 2 to move up and down on the support part 1.

[0090] The transmission mechanism 3 uses a gear rack transmission unit 31 to drive the battery pick-and-place mechanism 2 to perform lifting and lowering movements, effectively combining the stable transmission and high transmission efficiency of the gear 311 and the rack 312 with the working scene of the battery transport device 10. The gear rack transmission unit 31 can ensure that the battery pick-and-place process of the battery pick-and-place mechanism 2 remains stable and safe, thereby improving the battery pick-and-place efficiency. At the same time, the transmission mechanism 3 of the battery transport device 10 only uses two drive units 32 to perform synchronous motion control on the four ends of the battery pick-and-place mechanism 2, which not only effectively reduces the number of drive units 32 used, but also reduces the overall volume of the transmission mechanism 3, thereby improving the synchronization of the lifting and lowering movements of the battery transport device 10.

[0091] Among them, Figures 2 to 4 As shown, in the present embodiment, the driving unit 32 specifically includes a synchronization shaft 321 and a driving motor 322, wherein both ends of the synchronization shaft 321 are respectively connected to gears 311 arranged at both ends of the battery pick-up and placement mechanism 2, and the driving motor 322 is used to output power to drive the synchronization shaft 321 to rotate, and each gear 311 is passed through the synchronization shaft 321 and rotates coaxially with the synchronization shaft 321 to ensure the lifting synchronization.

[0092] The battery pick-and-place mechanism 2 is placed in the support part 1, and gear rack transmission units 31 are respectively installed between the four ends of the battery pick-and-place mechanism 2 and the support part 1, and synchronous shafts 321 and driving motors 322 are respectively installed on both sides of the battery pick-and-place mechanism 2. The synchronous shaft 321 is fixedly connected to the gears 311 in the two groups of gear rack transmission units 31 on the same side of the battery pick-and-place mechanism 2, so that the two gears 311 rotate coaxially with the synchronous shaft 321, and the driving motor 322 is fixedly connected to the battery pick-and-place mechanism 2. The driving motor 322 drives the synchronous shaft 321 to rotate to drive the two gears 311 on one side of the battery pick-and-place mechanism 2 to roll on the corresponding racks 312, so that the synchronous shaft 321 drives one side of the battery pick-and-place mechanism 2 to perform lifting and lowering movements. That is, in the present invention, by separately controlling the two driving motors 322 installed on the battery pick-and-place mechanism 2, it can be ensured that the four ends of the battery pick-and-place mechanism 2 are lifted and lowered in the same horizontal plane.

[0093] In the above-mentioned structural setting, the synchronization shaft 321 enables only one drive motor 322 on one side of the battery picking and placing mechanism 2 to simultaneously control the two sets of gear rack transmission units 31 to work, so that the gear 311 on one side of the battery picking and placing mechanism 2 can be synchronously and uniformly lifted and lowered along the support part 1. At the same time, such a structure can simplify the overall structure of the transmission mechanism 3, thereby achieving the beneficial technical effect of reducing the occupied space and reducing the manufacturing cost.

[0094] like Figures 2 to 4As shown, in this embodiment, a driving wheel 323 is installed on the output shaft of the driving motor 322, a driven wheel 324 is fixedly installed on the synchronous shaft 321, and a synchronous belt 325 is installed on the driving wheel 323 and the driven wheel 324, and the transmission from the driving wheel 323 to the driven wheel 324 is realized through the synchronous belt 325. Among them, the rotation of the driving motor 322 drives the driving wheel 323 to rotate, and the rotation of the driving wheel 323 drives the driven wheel 324 to rotate through the synchronous belt 325. Since the driven wheel 324 is fixedly connected to the synchronous shaft 321, the synchronous shaft 321 rotates and then drives the gears 311 fixedly installed at both ends to roll on the rack 312, so as to realize the lifting and lowering movement of the battery pick-and-place mechanism 2. The use of a belt transmission between the driving motor 322 and the synchronous shaft 321 can effectively reduce the precision requirements for the manufacture and installation of the driving mechanism, which is conducive to reducing the manufacturing cost and is convenient for operators to disassemble and maintain. Specifically, the synchronous belt 325 in this embodiment is driven by a chain to match the larger load and operating load of the battery transport device 10. At the same time, compared with other synchronous belts 325 (such as belt transmission, etc.), the reliability and durability of the chain are relatively high, which is conducive to ensuring the reliability of the long-term operation of the battery transport device 10.

[0095] In addition, if Figure 5 and Figure 6 As shown, the transmission mechanism 3 also includes an anti-slipping tooth assembly 4. In this embodiment, each anti-slipping tooth assembly 4 has four back wheel groups 41, and the four back wheel groups 41 are respectively arranged corresponding to the gear rack transmission units 31 and fixed at the preset positions of the battery pick-and-place mechanism 2 to locate the position of the gear 311 in each gear rack transmission unit 31 relative to the rack 312.

[0096] The rack 312 of the gear rack transmission unit 31 is fixedly connected to the column 11 of the support part 1, and the gear 311 is coaxially fixedly connected to the end of the synchronization shaft 321. The driving motor 322 drives the synchronization shaft 321 to rotate so that the gear 311 rolls on the rack 312. In order to ensure that the gear 311 and the rack 312 always have a good meshing effect during the rolling process of the gear 311 on the rack 312, an anti-slipping tooth component 4 is also installed at the end of the synchronization shaft 321. The anti-slipping tooth component 4 is provided with an upper and lower back wheel group 41, and each back wheel group 41 is respectively abutted against different wall surfaces on the rack 312, so that the gear 311 is constrained in different directions relative to the rack 312. The anti-slipping tooth component 4 of the transmission mechanism 3 is provided with a back wheel group 41 at the position corresponding to each gear rack transmission unit 31, so as to limit the position of the gear 311 relative to the rack 312, thereby improving the transmission effect and operation stability of the gear rack transmission unit 31.

[0097] Specific as Figure 6As shown, each back wheel assembly 41 includes two back wheels 411 arranged at a 90° angle relative to each other, one of the back wheels 411 is attached to the back of the corresponding rack 312 and the other back wheel 411 is attached to the side of the rack 312 facing the battery access mechanism 2. Through this structural arrangement, the back wheel assembly 41 can position the gear 311 on the rack 312 in different directions. In this embodiment, the two back wheels 411 are arranged at a 90° angle because the angle between the back and side of the rack 312 is 90°. Therefore, in other embodiments, if the angle between the back and side of the rack 312 is not 90°, the setting angle between the two back wheels 411 will also change accordingly.

[0098] The back wheel group 41 of the anti-slip assembly 4 is provided with two back wheels 411 respectively located on the back and side of the rack 312, and the two back wheels 411 in the back wheel group 41 are used to limit the vertical and horizontal directions of the gear 311 relative to the tooth surface of the rack 312, so as to ensure that the gear 311 can be meshed on the tooth surface and will not be disengaged from the vertical and horizontal directions, so that the gear 311 can maintain stable meshing with the rack 312, and the transmission is more stable. Figure 6 As shown, the battery pick-and-place mechanism 2 is clamped on the rack 312 from three directions by the gear 311 and the two back wheels 411 of the back wheel group 41, which can also reduce the stress on the gear 311 and make the gear 311 less likely to be damaged. Compared with the back wheel 411 of the back wheel group 41 being limited from other directions, the limit is changed from the other side of the gear 311 relative to the rack 312 to the back and side respectively, which also reduces the volume of the battery transport device 10, reduces the occupied space, and reduces the cost of the battery swap station 100.

[0099] like Figure 4 and Figure 5As shown, in a plane perpendicular to the axis of the rack 312, two back wheels 411 that limit the vertical and horizontal directions of the tooth surface of the gear 311 relative to the rack 312 form a back wheel group 41. In this embodiment, a back wheel group 41 is installed on the upper and lower sides of the contact position between the gear 311 and the rack 312, that is, a gear rack transmission unit 31 is equipped with four back wheels 411, so that when the gear 311 rolls up and down on the rack 312, there are back wheel groups 41 on the upper and lower sides of the meshing position of the gear 311 and the rack 312 to limit the gear 311. This design ensures that when the gear 311 rolls up or down on the rack 312, the forces on the upper and lower sides of the meshing position of the gear 311 and the rack 312 are balanced, which is beneficial to ensure that the stress distribution when the gear 311 and the rack 312 are always consistent, and is beneficial to improving the service life of the gear 311 and the rack 312. At the same time, such a design, relative to the battery picking and placing mechanism 2, enables the upper and lower sides of the battery picking and placing mechanism 2 in the vertical direction to be supported by the support part 1 with back wheels 411, which is conducive to making the battery picking and placing mechanism 2 run more smoothly during the lifting process and ensuring that its contact surface with the battery always remains horizontal.

[0100] like Figure 7 As shown, the transmission mechanism 3 also includes a mounting seat 5, which is fixed on both sides of the battery pick-and-place mechanism 2. The structure of the mounting seat 5 is as shown in FIG. Figure 7 As shown, there are several mounting holes on the surface for mounting the synchronous shaft 321 and the anti-slipping gear assembly 4. By setting a mounting seat 5 on the battery pick-up and placement mechanism 2 for fixing the synchronous shaft 321 and the anti-slipping gear assembly 4, the synchronous shaft 321 and the anti-slipping gear assembly 4 of the transmission mechanism 3 can be better fixed together to avoid the relative position deviation of the gear 311 connected to the synchronous shaft 321 relative to the back wheel assembly 41 of the anti-slipping gear assembly 4 during long-term use, which affects the meshing of the gear 311 with the rack 312. Figure 5 As shown, a set of gear rack transmission units 31 in this embodiment is correspondingly provided with two back wheel groups 41. The two back wheel groups 41 are arranged on the upper and lower sides of the gear 311 along the height direction to limit the position of the gear 311 relative to the rack 312 from different directions. The two back wheel groups 41 are fixed on the same mounting seat 5, and the mounting seat 5 provides two sets of back wheel mounting surfaces 51 for mounting the back wheel groups 41 at different heights, so as to be used for mounting the two back wheels 411 of each back wheel group 41.

[0101] like Figure 5 and Figure 6As shown, in this embodiment, in order to ensure the reliable rotation of the synchronous shaft 321 and avoid wear caused by long-term rotation, the transmission mechanism 3 also includes a bearing, the inner ring of the bearing is sleeved on the synchronous shaft 321, and the outer ring of the bearing is fixed to the mounting seat 5 through the bearing seat 326. The surface of the mounting seat 5 provides a bearing mounting surface 52 for the bearing seat 326 to be installed. The setting position of the bearing mounting surface 52 on the mounting seat 5 is as shown in FIG. Figure 7 shown.

[0102] In this embodiment, two bearings are respectively installed at the two side ends of the synchronization shaft 321, the synchronization shaft 321 is connected to the inner ring of the bearing, and the outer ring of the bearing is fixed to the mounting seat 5, so that the synchronization shaft 321 can rotate on one side of the mounting seat 5, and when the gear 311 rolls on the rack 312, the synchronization shaft 321 drives the battery pick-and-place mechanism 2 connected to the mounting seat 5 to perform lifting and lowering movements. By providing bearings, reducing the rotation of the synchronization shaft 321 will not affect the lifting and lowering movement of the battery pick-and-place mechanism 2 along the support portion 1.

[0103] The bearing is preferably a spherical bearing or a spherical bearing. By setting the bearing to a spherical bearing or a spherical bearing, the gears 311 of the plurality of gear rack transmission units 31 are not aligned with each other during rotation, thereby overcoming the coaxiality error and ensuring the stable operation of the synchronization shaft 321.

[0104] like Figures 2 to 4 As shown, the side of the column 11 of the support portion 1 facing the battery rack 20 is fixed to the battery rack 20 through the connecting unit 6 to form an integrated structure.

[0105] One end of the connection unit 6 is fixedly connected to the column 11 on the support part 1, and the other end of the connection unit 6 extends toward the battery rack 20 and is fixedly connected to the battery rack 20. Through the above-mentioned structural setting, the support part 1 and the battery rack 20 are fixed into an integrated structure, and the battery rack 20 can help the support part 1 to share part of the load, so that the structural strength requirement of the support part 1 itself is further reduced, and the structure and material thickness of the support part 1 can be simplified to achieve the purpose of reducing costs and weight.

[0106] Among them, Figure 4 As shown, the connection unit 6 has a first mounting plate 61 and a second mounting plate 62 which are arranged at an angle relative to each other. The first mounting plate 61 is used to connect with the battery rack 20 , and the second mounting plate 62 is connected with the side surface of the support portion 1 .

[0107] The connection unit 6 includes a first mounting plate 61 and a second mounting plate 62, one side of the second mounting plate 62 is connected to the side column 11 of the support part 1, the first mounting plate 61 is installed on the side of the second mounting plate 62 facing the battery room, and the first mounting plate 61 is fixedly connected to the battery rack 20 on the side facing away from the second mounting plate 62. Through the above-mentioned structural arrangement, the orientations of the mounting plates of the connection unit 6 used to connect the battery rack 20 and the support part 1 are different, so as to facilitate the construction personnel to install in different directions, so that the battery rack 20 remains connected and fixed relative to the support part 1 of the battery transport equipment 10. Of course, in other embodiments, in order to achieve the purpose of connecting the battery rack 20 with the column 11 of the support part 1, the connection unit 6 can also adopt any connection structure existing in the prior art to achieve the purpose of integrally connecting the support part 1 relative to the battery rack 20.

[0108] In addition, the battery transport device 10 also includes an anti-falling mechanism 7, such as Figure 4 As shown, in this embodiment, the anti-falling mechanism 7 is installed below the driving unit 32, and the anti-falling mechanism 7 has a first state and a second state. When the anti-falling mechanism 7 is in the first state, the anti-falling mechanism 7 engages with the synchronization shaft 321 of the driving unit 32 to limit the battery pick-up and placement unit (see Fig. 9 ); in the second state, the anti-fall mechanism 7 is away from the synchronous shaft 321, so that the synchronous shaft 321 can rotate normally to avoid obstruction to the rotation of the synchronous shaft 321. By setting the anti-fall mechanism 7 corresponding to the synchronous shaft 321, when the synchronous belt 325 sleeved on the driven wheel 324 of the synchronous shaft 321 breaks, the anti-fall mechanism 7 switches to the first state to clamp the synchronous shaft 321, thereby preventing the free rotation of the synchronous shaft 321 from causing the battery pick-up and place mechanism 2 to fall and damage the equipment, thereby improving the safety factor of the battery transport equipment 10.

[0109] like Figure 8 and Fig. 9 As shown, the anti-fall mechanism 7 in this embodiment includes a fixing seat 71, a limiting rod 72, an elastic member 73, an anti-fall wheel 76, and a contact wheel 74, wherein the fixing seat 71 is fixedly connected to the battery pick-and-place mechanism 2 through its fixing end 71a, and a limiting rod 72 is installed at the connecting end 71b at the other end of the fixing seat 71, and the limiting rod 72 can be wound around the connecting end with the fixing seat 71 as shown in FIG. Fig. 9 The flipping movement shown in the direction of the middle arrow is shown in the figure. A contact wheel 74 is installed on the side of the limit rod 72 away from the connection end. The contact wheel 74 rolls on the synchronous belt 325 which is a chain. A latch 75 is provided on the side of the limit rod 72 facing the driven synchronous shaft 321. An elastic member 73 is installed on the side of the limit rod 72 away from the latch 75. The elastic member 73 is used to apply a thrust to the limit rod 72 to move it toward the direction close to the synchronous belt 325. Figure 8In the second state shown in FIG. 1 , although the elastic member 73 acts on the limit rod 72 to make it flip toward the direction close to the synchronous belt 325, the position of the limit rod 72 is limited by the contact wheel 74, and the latching teeth 75 on the limit rod 72 cannot clamp the corresponding anti-falling wheel 76 on the synchronous shaft 321, so that the synchronous shaft 321 can keep rotating freely; and when the synchronous belt 325 fails due to fracture, such as Fig. 9 As shown, at this time, the positions of the contact wheel 74 and the limit rod 72 cannot be limited by the synchronous belt 325. Under the action of the elastic member 73, the contact wheel 74 flips toward the direction close to the driving wheel 323 and the driven wheel 324 and switches to the first state. When the latching teeth 75 on the limit rod 72 are engaged with the anti-falling wheel 76, the limit rod 72 can stop the rotation of the synchronous shaft 321 to achieve the purpose of anti-falling. Figure 8 The shape and structure shown in the figure are for illustration only, used to show the installation position and the connection relationship relative to the limit rod 72, and are not the actual product structure.

[0110] Among them, the anti-fall mechanism 7 has a first state and a second state. In the second state, the contact wheel 74 abuts against the outer surface of the synchronous belt 325. At this time, the elastic member 73 is in a compressed state, and the latching tooth 75 on the limiting rod 72 is disengaged from the anti-falling wheel 76. The coaxial shaft can drive the gears 311 on both sides thereof to roll on the rack 312, so that the battery picking and placing mechanism 2 can freely perform the lifting and lowering movement; when the synchronous belt 325 is broken, the anti-fall mechanism 7 enters the first state. Since the broken synchronous belt 325 cannot limit the anti-falling wheel 76, under the elastic action of the elastic member 73, the limiting rod 72 rotates around the connecting end toward the anti-falling wheel 76, and makes the latching tooth 75 on the elastic member 73 mesh with the anti-falling wheel 76, thereby preventing the synchronous shaft 321 from rotating. After the rotational movement of the synchronous shaft 321 is locked, the gears 311 at both ends thereof stop moving, thereby stopping the lifting and lowering movement of the battery picking and placing mechanism 2. By setting up the anti-fall mechanism 7, when the transmission mechanism 3 operates normally, the anti-fall mechanism 7 keeps disengaged from the synchronization shaft 321 of the transmission mechanism 3 to avoid affecting the transmission mechanism 3 driving the battery pick-up and placement mechanism 2 to move up and down; when special circumstances occur, the anti-fall mechanism 7 limits the rotation of the synchronization shaft 321 by engaging with the synchronization shaft 321, thereby limiting the position of the battery pick-up and placement mechanism 2 to achieve the anti-fall purpose.

[0111] The battery transfer equipment 10 achieves the beneficial technical effect of streamlining the overall structure of the battery transfer equipment 10 by setting the specific structure of the transmission mechanism 3, thereby achieving the beneficial technical effect of reducing the overall footprint of the battery transfer equipment 10 and reducing the manufacturing cost; and, by setting the specific structure of the transmission mechanism 3, it can ensure that the battery picking and placing mechanism 2 can be raised and lowered synchronously and uniformly along the support part 1 to ensure the normal operation of the battery swap station 100.

[0112] Among them, Figure 2As shown, a counterweight mechanism 8 is also provided on both sides of the support portion 1. The counterweight mechanism 8 is passed through the rod 12 installed vertically on the support portion 1 to achieve lifting and positioning relative to the support portion 1 in the vertical direction. A traction rope (not shown in the figure) is connected to the upper surface of the counterweight mechanism 8. After the traction rope extends upward, it changes direction through the guide wheel 81 set on the top crossbeam of the support portion 1, and then extends downward to connect with the battery pick-up and placement mechanism 2. Therefore, one end of the traction rope is connected to the counterweight mechanism 8, and the other end is connected to the battery pick-up and placement mechanism 2. When the battery pick-up and placement mechanism 2 rises, the counterweight mechanism 8 is driven downward to move synchronously through the traction rope. The counterweight mechanism 8 continuously applies an upward traction force to the battery pick-up and placement mechanism 2 through the traction rope to reduce the load applied by the battery pick-up and placement mechanism 2 to other components. The design of the counterweight mechanism 8 can improve the working efficiency of the battery pick-up and placement mechanism 2 when it moves upward, and improve the pick-up and placement speed of the battery transport equipment 10.

[0113] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A transmission mechanism of a battery transport device, wherein the battery transport device is arranged near a battery rack having a plurality of battery storage devices, the battery transport device comprises a support portion arranged near the battery rack, a battery pick-up and placement mechanism for picking up and placing batteries relative to any battery position of the battery rack, and the transmission mechanism for driving the battery pick-up and placement mechanism to move up and down, wherein: The transmission mechanism comprises: A plurality of gear rack transmission units are respectively arranged between the support portion and the battery pick-and-place mechanism, the gears of the gear rack transmission units are connected to the battery pick-and-place mechanism, the racks of the gear rack transmission units are arranged on the support portion along the vertical direction, and the gears and the racks are meshed with each other; Two driving units are respectively arranged on both sides of the battery pick-and-place mechanism to drive the gear rack transmission unit located on the same side of the battery pick-and-place mechanism to synchronously drive the battery pick-and-place mechanism to move up and down.

2. The transmission mechanism according to claim 1, characterized in that: The multiple groups of gear rack transmission units are arranged corresponding to the end angles of the battery picking and placing mechanism; and / or the driving unit includes: a synchronous shaft connecting the gears of the gear rack transmission units located at both ends; and a driving motor for driving the synchronous shaft to rotate, and each of the gears is passed through the synchronous shaft and rotates coaxially with the synchronous shaft.

3. The transmission mechanism according to claim 2, characterized in that: The driving unit further comprises a driving wheel and a driven wheel respectively sleeved on the output shaft of the driving motor and the synchronous shaft, and a synchronous belt driving between the driving wheel and the driven wheel.

4. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism also includes an anti-slipping tooth assembly, which includes a plurality of back wheel groups. The plurality of back wheel groups are respectively arranged corresponding to the rack and pinion transmission units and fixed at preset positions of the battery picking and placing mechanism to locate the position of the gear in each group of the rack and pinion transmission units relative to the rack.

5. The transmission mechanism according to claim 4, characterized in that: Each of the back wheel groups comprises a back wheel attached to the back side of the corresponding rack at a preset angle and a back wheel on the side of the rack facing the battery taking and placing mechanism.

6. The transmission mechanism according to claim 4, characterized in that: The transmission mechanism also includes a mounting seat, which is fixed on both sides of the battery removal mechanism, and the synchronization shaft and the anti-slip gear assembly are both installed on the mounting seat; preferably, the transmission mechanism also includes a bearing, the inner ring of the bearing is sleeved on the synchronization shaft, and the outer ring of the bearing is fixed on the mounting seat; preferably, the bearing is a spherical bearing or a spherical bearing.

7. The transmission mechanism according to claim 1, characterized in that: The support portion is fixed to the battery rack as an integral structure through a connecting unit on the side facing the battery rack. The connecting unit has a first mounting plate and a second mounting plate that are arranged at an angle relative to each other. The first mounting plate is used to connect to the battery rack, and the second mounting plate is connected to the side of the support portion.

8. The transmission mechanism according to claim 1, characterized in that: The battery transport equipment also includes an anti-fall mechanism, which has a first state and a second state. In the first state, the anti-fall mechanism is engaged with the synchronization shaft to limit the battery picking and placing unit; in the second state, the anti-fall mechanism is away from the synchronization shaft, and the synchronization shaft rotates normally.

9. A battery transport device, characterized in that: The battery transport device is arranged near a battery rack having a plurality of batteries for storing batteries, and comprises a support portion arranged near the battery rack, a battery pick-up and placement mechanism for picking up and placing batteries relative to any battery position of the battery rack, a transmission mechanism as described in any one of claims 1 to 8 for driving the battery pick-up and placement mechanism to move up and down, and a driving mechanism for providing power; one transmission mechanism is arranged on each side of the battery pick-up and placement mechanism; Preferably, the support portion of the battery transport device is a frame structure, the frame structure includes columns arranged along a vertical direction, and the rack is arranged on a side surface of the column along the vertical direction.

10. A battery swap station for replacing batteries in electric vehicles, characterized in that: The battery swap station comprises the battery transport device as described in claim 9.

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