Chassis battery replacement system and chassis battery replacement method

Abstract

The invention discloses a chassis battery replacing system and a chassis battery replacing method, and belongs to the technical field of electric vehicle battery replacing stations. The chassis battery replacing system comprises a battery rack, a stacking machine, a battery replacing trolley and a temporary storage mechanism; the stacking machine is used for transferring a battery pack to the battery rack or transferring the battery pack out of the battery rack; the battery replacing trolley is used for transferring a battery pack to a battery replacing position or transferring the battery pack detached from the vehicle out of the battery replacing position at the battery replacing position; the temporary storage mechanism is used for temporarily storing the battery packs which are transferred by the stacking machine and come from the battery rack and transferring the battery packs to the vehicle through the battery replacing trolley, or temporarily storing the battery packs which are transferred by the battery replacing trolley and come from the vehicle and transferring the battery packs to the battery rack through the stacking machine. The temporary storage mechanism is used for temporarily storing the battery pack from the battery rack or the battery pack from the vehicle, the waiting time of the battery replacing trolley can be saved, and therefore the battery replacing efficiency of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle battery replacement stations, and in particular to a chassis battery replacement system and a chassis battery replacement method. Background Art

[0002] New energy vehicles, especially pure electric vehicles (EVs), are experiencing unprecedented rapid development as an important way to reduce carbon emissions and promote sustainable development. However, despite the significant progress made in performance, driving experience and intelligence of pure electric vehicles, the limitation of their range is still one of the key factors restricting their widespread popularity. At present, the range of mainstream electric vehicles on the market is generally concentrated between 300km and 500km. Compared with the range of hundreds or even thousands of kilometers of traditional fuel vehicles, this range is obviously difficult to meet the needs of long-distance travel or high-frequency use.

[0003] In order to overcome the anxiety about the range of electric vehicles, the industry has actively explored and implemented a variety of solutions, among which fast charging technology and battery replacement technology are particularly eye-catching. Fast charging technology significantly shortens the time required to charge the battery by increasing the charging power, providing users with a more flexible way to replenish energy. However, fast charging technology is still limited by factors such as battery materials, thermal management, and grid capacity, and frequent fast charging may have a certain impact on battery life.

[0004] In contrast, battery swapping technology, with its high efficiency and convenience, provides a new idea for extending the actual use range of electric vehicles. As the core carrier of this technology, battery swapping stations not only realize the rapid replacement of power batteries, but also optimize energy utilization efficiency through centralized charging management and reduce user waiting time. The workflow of existing battery swapping stations mainly includes the unloading and storage of depleted batteries, and the extraction and installation of fully charged batteries. Although this process effectively improves the endurance of electric vehicles, there are still many areas that need to be optimized in actual operation.

[0005] Therefore, how to further shorten the waiting time for battery replacement is a technical problem that needs to be solved. Summary of the invention

[0006] The purpose of the present invention is to provide a chassis battery replacement system and a chassis battery replacement method to solve the problems existing in the above-mentioned prior art. A cache mechanism is used to temporarily store battery packs from a battery rack or from a vehicle, which can save the waiting time of the battery replacement vehicle and thus improve the battery replacement efficiency of the vehicle.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a chassis battery replacement system, including a battery rack, a stacker, a battery replacement cart and a cache mechanism, wherein the battery rack is used to store battery packs; the stacker is used to transfer battery packs to the battery rack, or transfer battery packs out of the battery rack; the battery replacement cart is used to transfer battery packs to a battery replacement position, or transfer battery packs disassembled from a vehicle at a battery replacement position out of the battery replacement position; the cache mechanism is used to temporarily store battery packs transferred from the battery rack by the stacker and transfer the battery packs to the vehicle by the battery replacement cart, or temporarily store battery packs transferred from the vehicle by the battery replacement cart and transfer the battery packs to the battery rack by the stacker.

[0009] In one embodiment, the battery exchange cart adopts an RGV cart, which includes a traveling assembly, a transverse movement assembly, a rotating base and a lifting platform, and a battery locking and unlocking platform; the battery locking and unlocking platform is installed on the rotating base through the lifting platform; the rotating base is connected to the RGV traveling track with the traveling assembly through the transverse movement assembly; the rotating base is used to drive the lifting platform to rotate in a horizontal plane; the transverse movement assembly is used to drive the lifting platform to move laterally in a direction perpendicular to the RGV traveling track.

[0010] In one embodiment, the cache mechanism includes a frame and a locking and unlocking assembly connected to the frame, the locking and unlocking assembly is used to lock or unlock the battery pack, and the frame is installed under the battery rack.

[0011] In one embodiment, the stacker includes a cargo platform, a lifting mechanism, a translation mechanism and a bidirectional track, the bidirectional track is installed on the cargo platform, the cargo platform is equipped with a fork, the fork is used to fork or place the battery pack, the lifting mechanism is used to drive the cargo platform up and down, and the translation mechanism is used to drive the cargo platform to move horizontally.

[0012] In one embodiment, a positioning mechanism is further included, and the positioning mechanism is used to position the vehicle so that the vehicle is in a battery replacement position, and the positioning mechanism includes a front wheel positioning mechanism and a rear wheel positioning mechanism.

[0013] In one embodiment, the front wheel positioning mechanism includes a roller and a transverse clamping push plate, the roller is distributed in a V-shape and forms a V-shaped groove for accommodating the front wheel, the transverse clamping push plate is used to push the front wheel to move laterally, and the rolling direction of the roller is parallel to the moving direction of the transverse clamping push plate.

[0014] In one embodiment, the rear wheel positioning mechanism includes a roller and a positioning push block, the roller is horizontally distributed and forms a rolling surface for supporting the rear wheel, the positioning push block is used to push the rear wheel to move laterally, and the rolling direction of the roller is parallel to the moving direction of the positioning push block.

[0015] In one embodiment, it also includes an opening and closing door mechanism, which is installed between the front wheel positioning mechanism and the rear wheel positioning mechanism; the opening and closing door mechanism includes a fixed component and a movable door component and a roller component installed on the fixed component, the roller component is located on both sides of the movable door component, and the axial direction of the roller component is parallel to the travel direction of the vehicle.

[0016] In one embodiment, it also includes a fire-fighting transfer mechanism, which includes a fire-fighting mobile plate assembly and a cover assembly. The fire-fighting mobile plate assembly is connected to a horizontal driving assembly, and the horizontal driving assembly is used to drive the fire-fighting mobile plate assembly in and out of the container. The fire-fighting mobile plate assembly is used to support the battery pack and drive the battery pack to move. The cover assembly is connected to a lifting driving assembly, and the lifting driving assembly is used to drive the cover assembly to cover the battery pack. The cover assembly can move with the battery pack.

[0017] The present invention also provides a chassis battery replacement method, which uses the chassis battery replacement system as described above, including the following contents: a stacker removes the battery pack from the battery rack and stands by near the cache mechanism; when the battery replacement cart arrives at the battery replacement position, the battery replacement cart transfers the battery pack removed from the vehicle to the cache mechanism for temporary storage; the stacker transfers the battery pack removed from the battery rack to the battery replacement cart; the battery replacement cart transfers the battery pack to the battery replacement position; the stacker removes the battery pack from the vehicle from the cache mechanism and transfers the battery pack to the battery rack; or: the stacker removes the battery pack from the battery rack and transfers the battery pack to the cache mechanism for temporary storage; when the battery replacement cart arrives at the battery replacement position, the battery replacement cart transfers the battery pack removed from the vehicle to the cache mechanism for temporary storage; the stacker transfers the battery pack removed from the vehicle on the battery replacement cart to the battery rack; the battery replacement cart transfers the battery pack removed from the battery rack and temporarily stored in the cache mechanism to the vehicle.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention utilizes a cache mechanism to temporarily store battery packs from a battery rack or a vehicle, utilizes a stacker to move battery packs in or out of the battery rack, and utilizes a battery-swap cart to move battery packs in or out of a battery-swap position. Thus, the battery packs on the battery rack can be transferred to the stacker, the battery packs from the vehicle on the battery-swap cart can be transferred to the cache mechanism, and the battery-swap cart can be used to transfer the battery packs from the battery rack on the stacker to the vehicle; or, the battery packs from the battery rack on the stacker can be transferred to the cache mechanism, the battery packs from the vehicle on the battery-swap cart can be transferred to the stacker, and the battery packs from the battery rack on the cache mechanism can be transferred to the vehicle. This can save the waiting time of the battery-swap cart, thereby improving the battery-swap efficiency of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a battery swap station and a battery swap container in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the distribution of various mechanisms of a battery swap station in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the RGV trolley in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of a vehicle ramp in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a front wheel alignment mechanism in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of a rear wheel alignment mechanism in an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the door opening and closing mechanism in an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of a stacker in an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of a battery rack in an embodiment of the present invention;

[0030] Fig.10 It is a schematic diagram of a firefighting transfer mechanism in an embodiment of the present invention;

[0031] Fig.11 A schematic diagram of a cache mechanism in an embodiment of the present invention;

[0032] Among them, 1. Battery rack; 2. Stacker; 3. Cache mechanism; 4. Battery replacement vehicle; 5. Door opening and closing mechanism; 6. Front wheel alignment mechanism; 7. Rear wheel alignment mechanism; 8. Up ramp; 9. Down ramp; 10. Fire transport mechanism;

[0033] 11. Battery compartment;

[0034] 21. Cargo platform; 22. Lifting mechanism; 23. Overhead rail; 24. Floor rail; 25. Two-way rail; 26. Two-way fork; 27. Stacker distribution box;

[0035] 31. Frame; 32. Add unlocking component;

[0036] 41. Rotating base; 42. Lifting platform; 43. Battery unlocking platform; 44. Traveling assembly; 45. RGV walking track; 46. Rotating structure assembly; 47. Transverse movement assembly; 48. RGV distribution box;

[0037] 51. Fixed assembly; 52. Drum assembly; 53. Moving door assembly;

[0038] 61. Roller; 62. Lateral clamping push plate; 63. V-shaped groove;

[0039] 71. Roller; 72. Positioning push block;

[0040] 81. Limiting roller; 82. Anti-slip edge;

[0041] 101. Fire fighting mobile board assembly; 102. Cover assembly; 103. Horizontal drive assembly; 104. Lifting drive assembly;

[0042] 100, box A; 200, box B; 300, box C. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The purpose of the present invention is to provide a chassis battery replacement system and a chassis battery replacement method to solve the problems existing in the prior art. A cache mechanism is used to temporarily store battery packs from a battery rack or from a vehicle, which can save the waiting time of the battery replacement vehicle and thus improve the battery replacement efficiency of the vehicle.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] like Figures 1 to 11As shown, the present invention provides a chassis battery replacement system, including a battery rack 1, a stacker 2, a battery replacement cart 4 and a cache mechanism 3. The battery rack 1 can be provided with one or more groups, and the battery rack 1 has a plurality of battery compartments 11 for storing and charging battery packs. The stacker 2 can transfer the battery pack to the battery rack 1, or transfer the battery pack out of the battery rack 1, so as to be able to charge the depleted battery, and can transfer the fully charged battery out of the battery rack 1 for use. The battery replacement cart 4 can adopt RGV (Rail Guided Vehicle) or AGV (Automated Guided Vehicle). Regardless of which method is adopted, the battery replacement cart 4 can transfer the battery pack to the battery replacement position, or transfer the battery pack removed from the vehicle at the battery replacement position out of the battery replacement position. The battery replacement position mentioned here refers to the position where the battery pack can be removed and installed after the vehicle is parked stably and positioned. The cache mechanism 3 has storage positions for battery packs, which can temporarily store the battery packs during the battery replacement process. The cache mechanism 3 can temporarily store battery packs from the battery rack 1 transferred by the stacker 2, and can also temporarily store battery packs from the vehicle transferred by the battery replacement cart 4. The battery packs temporarily stored in the former can be regarded as fully charged batteries (which does not mean that the charging capacity must reach 100%), and the fully charged batteries can be transferred to the vehicle by the battery replacement cart 4. The battery packs temporarily stored in the latter can be regarded as low-charged batteries, and the low-charged batteries can be transferred to the battery rack 1 by the stacker 2.

[0047] The present invention utilizes a cache mechanism 3 to temporarily store battery packs from the battery rack 1 or from the vehicle, utilizes the stacker 2 to move the battery packs into or out of the battery rack 1, and utilizes the battery swapping cart 4 to move the battery packs into or out of the battery swapping position, thereby, the battery packs on the battery rack 1 can be transferred to the stacker 2, the battery packs from the vehicle on the battery swapping cart 4 can be transferred to the cache mechanism 3, and the battery swapping cart 4 can be used to transfer the battery packs from the battery rack 1 on the stacker 2 to the vehicle; or, the battery packs from the battery rack 1 on the stacker 2 can be transferred to the cache mechanism 3, the battery packs from the vehicle on the battery swapping cart 4 can be transferred to the stacker 2, and the battery packs from the battery rack 1 on the cache mechanism 3 can be transferred to the vehicle by the battery swapping cart 4; no matter which of the above-mentioned battery swapping methods is adopted, the cache mechanism 3 can be used to temporarily store the battery packs, thereby saving the waiting time of the battery swapping cart 4 and improving the battery swapping efficiency of the vehicle.

[0048] In one embodiment, in combination Figure 3As shown, the battery swap trolley 4 adopts an RGV trolley, which includes a rotating base 41, a lifting platform 42 and a battery locking and unlocking platform 43. An RGV distribution box 48 may also be provided, and the RGV distribution box 48 moves with the movement of the RGV trolley. The battery locking and unlocking platform 43 is installed on the rotating base 41 through the lifting platform 42, and the rotating base 41 is connected to the RGV walking track 45 through the walking component 44. The rotating base 41 bears the weight of the entire RGV trolley, and the lifting platform 42 can adopt a scissor-fork lifting method or an electric / hydraulic / pneumatic cylinder lifting method. The battery locking and unlocking platform 43 can lock or unlock the battery pack to enable smooth transfer. In addition, the battery locking and unlocking platform 43 can also be provided with installation and disassembly tools, which can remove the battery pack from the vehicle or install the battery pack on the vehicle. The travel component 44 can be in the form of a gear rack. For example, the rotating base 41 is provided with a gear connected to the power motor, and the RGV travel track 45 is provided with a rack meshing with the gear. In this way, the rotating base 41 can drive the RGV trolley to travel on the RGV travel track 45 by driving the gear. Of course, the travel component 44 can also be in other forms, such as a telescopic cylinder push / pull method, a screw nut method, a traction machine traction method, etc.

[0049] In one embodiment, the battery locking and unlocking platform 43 is composed of a vehicle body posture measurement mechanism, a vehicle position re-measurement mechanism, an independent lifting mechanism, a vehicle body positioning pin mechanism, and an active posture adjustment mechanism, and is connected to the lifting platform 42 through a floating chain. The combination of multiple mechanisms enables the battery locking and unlocking platform 43 to complete the rotation in the X and Y directions, the detection and re-measurement of the battery pack posture, and the locking and unlocking of the battery pack.

[0050] In one embodiment, a rotating structure assembly 46 is also included. The rotating structure assembly 46 can be installed between the rotating base 41 and the lifting platform 42. The lifting platform 42 can be driven to rotate in a horizontal plane through the rotating structure assembly 46, so that the orientation of the battery locking and unlocking platform 43 can be adjusted, so that the battery pack can adapt to the battery installation positions of different orientations of different vehicles, thereby improving the adaptability of the battery swap vehicle 4.

[0051] In one embodiment, two battery unlocking platforms 43 may be arranged in parallel to meet the battery replacement needs of multiple packs (two battery packs). At this time, the RGV trolley becomes a multi-pack battery replacement RGV trolley that can replace multiple battery packs at the same time. By arranging the battery unlocking platforms 43 in parallel, it can be used to adapt to the simultaneous unlocking of multiple packs of chocolate battery replacement battery packs for passenger cars and logistics vehicles. In addition, in addition to the setting of the rotating structure assembly 46, the passive adjustment mode of the battery unlocking platform 43 can also be improved to an active posture adjustment mechanism to be able to adapt to single-pack or multi-pack passenger cars and logistics vehicles with different electrical plug orientation designs. Among them, the active posture adjustment mechanism may include an X-direction adjustment structure and a Y-direction adjustment structure, both of which are respectively provided with a telescopic movable structure and a wedge-shaped adjustment block. The telescopic movable structure can push or pull the wedge-shaped adjustment block to move in the X direction or the Y direction, and then adjust the inclination angle of the battery unlocking platform 43 connected thereto, and finally adjust the posture of the battery unlocking platform 43 so that it can adapt to the posture of the battery pack in the vehicle.

[0052] In one embodiment, a transverse moving assembly 47 is also included. The transverse moving assembly 47 can adopt a telescopic cylinder or a screw nut structure. The fixed end of the transverse moving assembly 47 can be connected to the rotating base 41, and the movable end is connected to the rotating structure assembly 46 or the lifting platform 42. The transverse moving assembly 47 can drive the lifting platform 42 to move transversely in a direction perpendicular to the RGV walking track 45. Therefore, the cooperation of the transverse moving assembly 47, the walking assembly 44 and the rotating structure assembly 46 can align the battery locking and unlocking platform 43 with the position of the vehicle to pick up and put the battery pack.

[0053] In one embodiment, in combination Fig.11 As shown, the cache mechanism 3 includes a frame 31 and a locking and unlocking assembly 32 connected to the frame 31. The locking and unlocking assembly 32 is used to lock or unlock the battery pack so as to temporarily store the battery pack or release the battery pack. The frame 31 can be installed below the battery rack 1 and above the pit where the battery swap cart 4 moves. The battery rack 1 is a battery rack 1 close to the battery swap cart 4. After the battery swap cart 4 removes the battery pack from the vehicle, it is placed under the cache mechanism 3. The locking and unlocking assembly 32 moves horizontally to lock the battery pack, thereby facilitating the transfer of the battery pack between the battery swap cart 4 and the cache mechanism 3.

[0054] In one embodiment, in combination Figure 8As shown, the stacker 2 includes a cargo platform 21, a lifting mechanism 22 and a translation mechanism. The frame of the stacker 2 may also be provided with a stacker distribution box 27, which provides power for the operation of the stacker 2. The cargo platform 21 is equipped with a fork, which is used to fork the battery pack and transfer the battery pack to a designated position (battery rack 1, cache mechanism 3 or battery replacement trolley 4, etc.) or transfer it out from the above-mentioned designated position as the cargo platform 21 moves. The lifting mechanism 22 can be in the form of a chain lifting structure, a winch lifting mechanism or a telescopic cylinder lifting mechanism. The lifting mechanism 22 can drive the cargo platform 21 up and down to meet the needs of taking and placing battery packs at different heights. The translation mechanism may include a ceiling rail 23 and / or a floor rail 24, and the frame where the lifting mechanism 22 is located can move along the ceiling rail 23 and / or the floor rail 24 to drive the cargo platform 21 to move horizontally, thereby realizing the needs of taking and placing battery packs at different positions of the cargo platform 21 in the horizontal direction.

[0055] In one embodiment, it further includes a bidirectional track 25, which is installed on the cargo platform 21. The cargo fork is a bidirectional fork 26, which is installed on the bidirectional track 25. Thus, the bidirectional fork 26 can move from one side of the cargo platform 21 to the other side, so that the bidirectional fork 26 can fork or place the battery pack on one side of the cargo platform 21 through telescopic movement, and can also fork or place the battery pack on the other side of the cargo platform 21 through telescopic movement. In addition, two bidirectional forks 26 can be arranged in parallel, which can fork or place the battery packs on the same side or both sides of the cargo platform 21 at the same time, thereby further improving the efficiency of taking and placing the battery packs.

[0056] In one embodiment, in combination Figure 5 and Figure 6 As shown, it also includes a positioning mechanism, which is used to position the vehicle so that the vehicle is in the battery swap position. The positioning mechanism includes a front wheel positioning mechanism 6 and a rear wheel positioning mechanism 7, which respectively position the front wheels and rear wheels of the vehicle. The positioning mechanism can adopt an active positioning method and a passive positioning method. The former can push the front wheel / rear wheel to move into the battery swap position through the set positioning mechanism, and the latter mainly relies on the vehicle to enter the battery swap position when it is driven.

[0057] In one embodiment, the front wheel positioning mechanism 6 includes a roller 61 and a transverse clamping push plate 62. The roller 61 is V-shaped and forms a V-shaped groove 63 for accommodating the front wheel. When the front wheel enters the V-shaped groove 63, the front and rear position of the vehicle can be directly determined. The transverse clamping push plate 62 can push the front wheel to move laterally by moving perpendicular to the driving direction of the vehicle, thereby determining the lateral position of the vehicle. The rolling direction of the roller 61 is parallel to the moving direction of the transverse clamping push plate 62, which can reduce the resistance of the transverse clamping push plate 62 to push the front wheel to move, thereby facilitating the lateral movement of the front wheel.

[0058] In one embodiment, the rear wheel positioning mechanism 7 includes a roller 71 and a positioning push block 72. The roller 71 is horizontally distributed and forms a rolling surface for supporting the rear wheel. The roller 71 can be of a longer length or multiple groups can be arranged in the length direction to meet the needs of positioning the rear wheels of vehicles with different body lengths. The positioning push block 72 can push the rear wheel to move laterally by moving perpendicular to the driving direction of the vehicle, thereby determining the lateral position of the vehicle. The rolling direction of the roller 71 is parallel to the moving direction of the positioning push block 72, which can reduce the resistance of the positioning push block 72 to push the rear wheel to move, thereby facilitating the lateral movement of the rear wheel.

[0059] In one embodiment, in combination Figure 7 As shown, it also includes an opening and closing door mechanism 5, which is installed between the front wheel positioning mechanism 6 and the rear wheel positioning mechanism 7, so that after the front and rear wheels of the vehicle reach the battery swapping position, the vehicle chassis position can face the opening and closing door mechanism 5, and when the opening and closing door mechanism 5 is closed, the vehicle can pass through, and when the opening and closing door mechanism 5 is opened, the RGV trolley can pass through. Furthermore, before the battery swap, the opening and closing door mechanism 5 can be used to support the movement of the vehicle so that the vehicle reaches the battery swapping position. During the battery swapping process, the opening and closing door mechanism 5 is opened to facilitate the transfer of the battery pack between the vehicle and the battery swapping trolley 4.

[0060] In one embodiment, the opening and closing door mechanism 5 includes a fixed component 51 and a movable door component 53 and a roller component 52 installed on the fixed component 51. The fixed component 51 can be fixed on the foundation, and the roller component 52 and the container are connected by the fixed component 51. The roller component 52 is located on both sides of the movable door component 53. The axial direction of the roller component 52 is parallel to the travel direction of the vehicle. The travel direction of the vehicle can be limited by the roller component 52, so that the vehicle can enter the designated position to complete the battery replacement, while preventing the vehicle from damaging the structure of the battery replacement station. The opening and closing method of the opening and closing door mechanism 5 can adopt the method of sliding door, lifting door, etc., as long as the above functions can be achieved. For example, the opening and closing door mechanism 5 is driven by a servo motor to drive the sprocket chain, and the chain pulls the movable door component 53 to move. The four-bar linkage mechanism realizes the vertical lifting of the movable door component 53 to be flush with the fixed component 51.

[0061] In one embodiment, in combination Fig.10As shown, it also includes a fire transport mechanism 10, which can transfer abnormal battery packs from the inside of the container to the outside of the container, and transfer new battery packs from the outside of the container to the inside of the container. The fire transport mechanism 10 includes a fire moving plate assembly 101 and a cover assembly 102. The fire moving plate assembly 101 is connected to a horizontal drive assembly 103, and the fire moving plate assembly 101 can be driven to enter and exit the container through the horizontal drive assembly 103. The container is provided with an opening for the fire moving plate assembly 101 to enter and exit. The fire moving plate assembly 101 is used to support the battery pack and drive the battery pack to move under the action of the horizontal drive assembly 103. The cover assembly 102 is connected to a lifting drive assembly 104, and the lifting drive assembly 104 can drive the cover assembly 102 to cover the battery pack. After the cover assembly 102 covers the battery pack, the cover assembly 102 can move with the battery pack, that is, when the battery pack is transferred to the outside of the container, the cover assembly 102 remains covered on the battery pack to ensure that the battery pack will not have a serious impact inside the container. The setting of the fire transfer mechanism 10 can not only ensure the safety of the container, but also use the horizontal drive component 103 to transport the new battery pack outside the container to the inside of the container, thereby taking into account the warehousing needs of the new battery pack and ensuring that the normal operation of the battery swap station is not affected.

[0062] In one embodiment, the various mechanisms and equipment included in the chassis battery replacement system can be installed in a container, which can be divided into different containers according to different functions and locations, for example, there are A box 100, B box 200 and C box 300, wherein A box 100 is a battery replacement channel, which can be provided with an up ramp 8, a down ramp 9, a front wheel positioning mechanism 6, a rear wheel positioning mechanism 7, an opening and closing door mechanism 5, and a laser line scanning camera, a capture system, etc. A stacker 2 and a battery rack 1 can be provided in the B box 200, and a cache mechanism 3 and a fire transfer mechanism 10 are provided below the battery rack 1. A battery rack 1 and a charger can be provided in the C box 300. The RGV trolley is hidden in the foundation pit below the A box 100 and the B box 200, which makes the battery pack replacement process simple and reliable, and helps to reduce costs and improve the overall performance of the battery replacement station. The capture machine system is similar to a gate machine, used to identify vehicles and release them, and is set at the entrance; the laser line scan camera is used to scan the characteristic position of the vehicle after the vehicle stops in the V-groove 63 of the front wheel alignment mechanism 6 and returns to the center, and the visual system calculates the battery position of the vehicle.

[0063] In one embodiment, three groups of battery racks 1 are provided, the B box 200 is provided with two groups of battery racks 1, and the C box 300 is provided with one group of battery racks 1. The stacker 2 moves between the battery racks 1 of the B box 200 and the battery racks 1 of the C box 300. The bidirectional forks 26 on the stacker 2 are used to pick up and store the battery packs on the battery racks 1 on different sides. There are a total of 46 battery compartments 11 on the battery rack 1, which can increase the number of battery swaps at the battery swap station.

[0064] In one embodiment, an up ramp 8 is arranged on the entrance side of the battery exchange channel, and a down ramp 9 is arranged on the exit side of the battery exchange channel. Anti-skid edges 82 are arranged on both the up ramp 8 and the down ramp 9 to prevent the vehicle from slipping. The up ramp 8 may also be provided with limiting rollers 81. The limiting rollers 81 are distributed in an eight-shaped shape, which can limit the path of the vehicle entering the battery exchange channel so that it can accurately enter the battery exchange position.

[0065] The present invention also provides a chassis battery replacement method, which can be applied to the chassis battery replacement system as described above, including the following contents: According to the different battery packs temporarily stored in the cache mechanism 3, it can be divided into two forms:

[0066] One form is that the cache mechanism 3 temporarily stores the battery pack from the vehicle:

[0067] The stacker 2 takes the battery pack from the battery rack 1 and stands by near the cache mechanism 3;

[0068] The battery swapping trolley 4 arrives at the battery swapping position, and the battery swapping trolley 4 transfers the battery pack removed from the vehicle to the cache mechanism 3 for temporary storage;

[0069] The stacker 2 transfers the battery pack removed from the battery rack 1 to the battery replacement vehicle 4;

[0070] The battery swapping vehicle 4 transfers the battery pack to the battery swapping position;

[0071] The stacker 2 takes the battery pack from the vehicle from the buffer mechanism 3 and transfers the battery pack to the battery rack 1 .

[0072] Another form is that the cache mechanism 3 temporarily stores the battery packs from the battery rack 1:

[0073] The stacker 2 takes the battery pack from the battery rack 1 and transfers the battery pack to the cache mechanism 3 for temporary storage;

[0074] The battery swapping trolley 4 arrives at the battery swapping position, and the battery swapping trolley 4 transfers the battery pack removed from the vehicle to the position of the cache mechanism 3 and waits for operation;

[0075] The stacker 2 transfers the battery pack removed from the vehicle on the battery swapping trolley 4 to the battery rack 1;

[0076] The battery-exchanging vehicle 4 transfers the battery pack temporarily stored in the cache mechanism 3 and removed from the battery rack 1 to the vehicle.

[0077] In one embodiment, when performing multiple battery swaps, the vehicle to be replaced passes through the upramp 8 to enter the battery swap channel after being identified by the capture system. The front wheels roll over the opening and closing door mechanism 5 and then drive into the front wheel alignment mechanism 6, while the rear wheels rest on the rear wheel alignment mechanism 7. The front wheel alignment mechanism 6 and the rear wheel alignment mechanism 7 clamp the tires of the front and rear wheels respectively to align the vehicle with the opening and closing door mechanism 5. The laser line scan camera makes an initial judgment on the position of the vehicle, and the movable door assembly 53 of the opening and closing door mechanism 5 opens in a direction perpendicular to the direction of vehicle travel. At the same time, the stacker 2 starts to take the battery pack from the battery rack 1 and stands by near the cache mechanism 3. When the opening and closing door mechanism 5 is opened to the maximum position, the multi-pack battery swap RGV cart begins to rise and disassembles multiple battery packs at the same time. After the vehicle position re-measurement mechanism measures the vehicle position and the vehicle body posture measurement mechanism measures the vehicle body posture, the battery locking and unlocking platform 43 with a floating function fits with the vehicle chassis, the body positioning pins extend into the frame, and the unlocking mechanism unlocks the battery pack, and multiple battery packs are removed together to the battery locking and unlocking platform 43. The RGV trolley transports the removed battery pack to the bottom of the cache mechanism 3 and lifts it. The cache mechanism 3 is actuated, the locking and unlocking assembly 32 hooks the battery pack, and the RGV trolley descends to the handover position with the stacker 2. The stacker 2 places the battery pack taken from the battery rack 1 on the battery locking and unlocking platform 43 of the RGV trolley, and then the RGV trolley transports the battery pack to the bottom of the vehicle. The battery locking and unlocking platform 43 fits with the vehicle chassis, the body positioning pins extend out to position, and then multiple battery packs are installed on the vehicle at the same time. After installation, the RGV trolley descends, the opening and closing door mechanism 5 is closed, the front wheel positioning mechanism 6 and the rear wheel positioning mechanism 7 are opened, the vehicle leaves the battery exchange channel, and the battery exchange is completed.

[0078] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A chassis battery replacement system, characterized in that: include: A battery rack, wherein the battery rack is used to store battery packs; A stacker, the stacker is used to transfer the battery pack to the battery rack, or transfer the battery pack out of the battery rack; A battery swapping trolley, which is used to transfer the battery pack to the battery swapping position, or to transfer the battery pack removed from the vehicle at the battery swapping position out of the battery swapping position; And a cache mechanism, which is used to temporarily store the battery packs transferred from the battery rack by the stacker and transfer the battery packs to the vehicle by the battery swapping cart, or to temporarily store the battery packs transferred from the vehicle by the battery swapping cart and transfer the battery packs to the battery rack by the stacker.

2. The chassis battery replacement system according to claim 1, characterized in that: The battery-exchange trolley adopts an RGV trolley, which includes a traveling assembly, a transverse movement assembly, a rotating base and a lifting platform, as well as a battery locking and unlocking platform; the battery locking and unlocking platform is installed on the rotating base through the lifting platform; the rotating base is connected to the RGV traveling track with the traveling assembly through the transverse movement assembly; the rotating base is used to drive the lifting platform to rotate in a horizontal plane; the transverse movement assembly is used to drive the lifting platform to move laterally in a direction perpendicular to the RGV traveling track.

3. The chassis battery replacement system according to claim 1, characterized in that: The cache mechanism includes a frame and a locking and unlocking assembly connected to the frame, the locking and unlocking assembly is used to lock or unlock the battery pack, and the frame is installed under the battery rack.

4. The chassis battery replacement system according to claim 1, characterized in that: The stacker includes a cargo platform, a lifting mechanism, a translation mechanism and a bidirectional track. The bidirectional track is installed on the cargo platform. The cargo platform is equipped with a fork, which is used to fork or place the battery pack. The lifting mechanism is used to drive the cargo platform to move up and down, and the translation mechanism is used to drive the cargo platform to move horizontally.

5. The chassis battery replacement system according to claim 1, characterized in that: It also includes a positioning mechanism, which is used to position the vehicle so that the vehicle is in a battery replacement position. The positioning mechanism includes a front wheel positioning mechanism and a rear wheel positioning mechanism.

6. The chassis power replacement system according to claim 5, characterized in that: The front wheel positioning mechanism includes a roller and a transverse clamping push plate. The roller is distributed in a V shape and forms a V-shaped groove for accommodating the front wheel. The transverse clamping push plate is used to push the front wheel to move laterally. The rolling direction of the roller is parallel to the moving direction of the transverse clamping push plate.

7. The chassis battery replacement system according to claim 5, characterized in that: The rear wheel positioning mechanism includes rollers and positioning push blocks, the rollers are horizontally distributed and form a rolling surface for supporting the rear wheels, the positioning push blocks are used to push the rear wheels to move laterally, and the rolling direction of the rollers is parallel to the moving direction of the positioning push blocks.

8. The chassis power replacement system according to claim 5, characterized in that: It also includes an opening and closing door mechanism, which is installed between the front wheel positioning mechanism and the rear wheel positioning mechanism; the opening and closing door mechanism includes a fixed component and a movable door component and a roller component installed on the fixed component, the roller component is located on both sides of the movable door component, and the axial direction of the roller component is parallel to the travel direction of the vehicle.

9. The chassis battery replacement system according to claim 1, characterized in that: It also includes a fire-fighting transfer mechanism, which includes a fire-fighting mobile plate assembly and a cover shell assembly. The fire-fighting mobile plate assembly is connected to a horizontal driving assembly, and the horizontal driving assembly is used to drive the fire-fighting mobile plate assembly in and out of the container. The fire-fighting mobile plate assembly is used to support the battery pack and drive the battery pack to move. The cover shell assembly is connected to a lifting driving assembly, and the lifting driving assembly is used to drive the cover shell assembly to cover the battery pack. The cover shell assembly can move with the battery pack.

10. A chassis battery replacement method, characterized in that: The chassis battery replacement system according to any one of claims 1 to 9 is applied, comprising the following contents: The stacker takes the battery pack from the battery rack and stands by near the cache mechanism; The battery swapping vehicle arrives at the battery swapping position, and the battery swapping vehicle transfers the battery pack removed from the vehicle to the cache mechanism for temporary storage; The stacker transfers the battery pack removed from the battery rack to the battery replacement vehicle; The battery swapping vehicle transfers the battery pack to the battery swapping position; The stacker takes the battery pack from the vehicle from the buffer mechanism and transfers the battery pack to the battery rack; or: The stacker removes the battery pack from the battery rack and transfers the battery pack to the cache mechanism for temporary storage; The battery swapping vehicle arrives at the battery swapping position, and the battery swapping vehicle transfers the battery pack removed from the vehicle to the cache mechanism position and waits; The stacker transfers the battery pack removed from the vehicle on the battery swapping trolley to the battery rack; The battery-exchanging vehicle transfers the battery pack temporarily stored in the cache mechanism and removed from the battery rack to the vehicle.

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