Chassis battery replacing type battery replacing station for electric heavy truck and battery replacing method

Abstract

The chassis battery replacing type battery replacing station for the electric heavy truck comprises a battery replacing station bin body and a parking platform parallel to the battery replacing station bin body, a supporting frame is arranged in a battery replacing area below the middle of the parking platform, a conveying frame is stacked on the supporting frame, and the conveying frame is arranged in the middle of the battery replacing station bin body; the conveying frame is shorter than the supporting frame, the battery replacing station bins on the two sides of the conveying frame are symmetrical, and the RGV trolley is installed at the bottom of the conveying frame in a sliding mode and moves in the horizontal X direction. The conveying frame comprises translation guide rails fixedly installed on the two sides of the top of the conveying frame correspondingly, a connecting plate moving in the horizontal X direction of the translation guide rails and a clamping plate moving in the vertical Y direction of the connecting plate. The problems that in the prior art, an electric heavy truck is inconvenient to disassemble and assemble and has potential safety hazards during hoisting and battery replacement are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery replacement for new energy vehicles, and relates to a chassis battery replacement station and a battery replacement method for electric heavy trucks. Background Art

[0002] Pure electric heavy-duty trucks are developing more and more rapidly. One of the bottlenecks hindering the development of pure electric heavy-duty trucks is the difficulty of charging power batteries. The traditional way is to use charging piles for fast charging, but this method has many disadvantages: the efficiency is still far less than refueling, the battery life is reduced, and the cost of battery maintenance is high. In order to solve the efficiency problem, the existing solution is to use battery replacement, directly replace the battery on the electric vehicle, replace the fully charged battery at the battery replacement station, and replace the low-power battery and charge it at the battery replacement station. This improves the endurance efficiency of electric heavy-duty trucks, but the most important thing about the battery replacement method is the battery replacement efficiency.

[0003] Since commercial vehicles, especially electric heavy trucks, are heavy and inconvenient to position and lift, existing electric heavy truck batteries basically adopt a piggyback battery replacement method, and the battery is removed or installed by hoisting. The hoisting mechanism is generally located above the battery storage area and the driving channel, and is used to lift the fully charged batteries in the battery storage area to the battery replacement vehicle in the driving channel; however, the hoisting mechanism generally occupies a large area and requires the setting of trusses and hoisting channels, which is inconvenient to install and move; and the battery is assembled by hoisting. Since the battery is heavy, the battery will swing due to inertia during the hoisting and moving process, and it is difficult to quickly place the battery to the designated position. If the battery slips, it will cause certain safety hazards. Summary of the invention

[0004] In view of this, in order to solve the problems of inconvenient disassembly and assembly and potential safety hazards in the prior art of lifting and battery replacement of electric heavy trucks, the present invention provides a chassis battery replacement station and battery replacement method for electric heavy trucks, which changes the installation position of the battery of the electric heavy truck and installs the battery on the chassis, thereby completing the battery replacement action of the battery installed on the chassis.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A chassis-swap battery-swap station for electric heavy trucks comprises a battery-swap station body and a parking platform arranged in parallel with the battery-swap station body, a support frame is arranged in the battery-swap area below the middle of the parking platform, a conveying frame is stacked on the support frame, the conveying frame is placed in the middle of the battery-swap station body, the length of the conveying frame is shorter than the support frame, the battery-swap station bodies on both sides of the conveying frame are symmetrical, the RGV trolley is slidably installed at the bottom of the conveying frame and moves along the horizontal X direction; the conveying frame comprises translation guide rails respectively fixedly installed on both sides of the top of the conveying frame, a connecting plate moving in the horizontal X direction along the translation guide rail, and a clamping plate moving in the vertical Y direction along the connecting plate.

[0007] Furthermore, the battery swap station compartment on both sides of the conveying frame are successively equipped with stacker modules for moving battery packs, cache battery racks for placing battery packs side by side, water cooling modules for cooling the battery packs in the battery swap station compartment and an observation room. The side of the conveying frame away from the parking platform is also a cache battery rack, that is, both sides of each stacker module are cache battery racks.

[0008] Furthermore, a charger for charging the battery pack is installed in the battery swap station compartment where the water-cooling module is located, and the observation room is equipped with CNC equipment to facilitate staff to view the working status of the battery swap station in real time.

[0009] Furthermore, a group of movable guide rails parallel to each other are fixedly installed at the bottom and side walls of the support frame along the length direction, a bridge pad is slidably installed on the top of the support frame, and movable blocks adapted to the corresponding side wall movable guide rails and a fourth power assembly driving the movable blocks to move along the length direction of the support frame are fixedly installed on both sides of the lower surface of the bridge pad, and the RGV trolley is adapted to the movable guide rails at the bottom of the corresponding support frame.

[0010] Furthermore, a second power assembly is connected to the connecting plate, a third power assembly is connected to the clamping plate, rectangular grooves are provided on both sides of the connecting plate, the clamping plate is inserted into the corresponding rectangular grooves, and a fixing plate for installing the second power assembly is fixedly installed on the conveying frame between the translation guide rails; the connecting plate is driven by the second motor to move horizontally in the X direction along the translation guide rail, a limit baffle is fixedly installed on the connecting plate on the inner side of the clamping plate, the limit baffle is used to fix the third power assembly, and the clamping plate is driven by the third motor to move vertically in the Y direction along the connecting plate.

[0011] Furthermore, the RGV trolley includes a base plate, rollers rotatably installed at the four corners of the base plate, a rotating mechanism installed on the upper surface of the base plate, a support plate installed on the rotating mechanism, a plurality of groups of scissor fork brackets installed on the support plate, and a storage table correspondingly installed on each group of scissor fork brackets, the storage table is used to support the battery pack for battery replacement, the rotating mechanism includes a ring gear fixedly connected to the support plate and a driving gear meshing with the ring gear, the rotating shaft of the ring gear is fixed to the support plate, and the rotating shaft of the driving gear is fixed to the base plate.

[0012] Furthermore, U-shaped slots are fixedly installed on the upper surface of the support plate and on both sides of the lower surface of each corresponding group of storage tables, and the four corners of the centrally hinged scissors fork bracket are hinged on the corresponding U-shaped slots, and a slider is fixedly installed on one side of the U-shaped slot, and slide rails used in conjunction with the slider are fixedly installed on the corresponding upper surface of the support plate and the lower surface of the storage table, and a first power component corresponding to the storage table is fixedly installed on the upper surface of the support plate.

[0013] Furthermore, each set of storage tables and the corresponding scissor fork brackets are covered with a sheet metal shell.

[0014] Furthermore, a scale is fixedly mounted on the gear ring, and the radius of the driving gear is smaller than the radius of the gear ring.

[0015] Furthermore, each set of storage tables is provided with an unlocking mechanism, which is used in conjunction with a battery locking mechanism on the chassis of the electric heavy truck.

[0016] The battery replacement method of the chassis battery replacement station for electric heavy trucks comprises the following steps:

[0017] S1. Before the electric heavy truck enters the battery swap station, the gate recognizes the vehicle information, retrieves the vehicle battery information through the cloud platform, and opens after determining that the vehicle model and related information match;

[0018] S2. The vehicle drives onto the parking platform of the battery swap station, and the RGV trolley starts to work. The RGV trolley moves from the side of the parking platform to the parking platform. During the movement, the bridge pad on the parking platform opens, and the RGV trolley stops at the bottom of the electric heavy truck, and the precise position of the battery pack is located through the detection mechanism;

[0019] S3, the RGV trolley drives the depleted battery pack removed from the electric heavy truck to be moved out from the parking platform to the bottom of the conveying frame. At the same time, the bridge pad is reset. At this time, the bridge pad is sealed on the parking platform to ensure the integrity of the parking platform and prevent people from mistakenly entering the parking platform during this process. The clamping plate in the conveying frame takes away the depleted battery pack removed from the RGV trolley under the action of the third power component, and places it on the cache battery racks on both sides of the stacker module through the stacker in the stacker module for charging;

[0020] S4, the action is opposite to step S3, the palletizer in the stacker module transfers the fully charged battery pack on the cache battery rack to the conveying frame, and transfers it to the RGV trolley through the clamping plate on the conveying frame to replace the battery for the electric heavy truck;

[0021] S5. After the battery replacement of the electric heavy truck is completed, the gate opens and the electric heavy truck drives out of the parking platform.

[0022] Furthermore, in step S2, the storage table is raised and lowered to below the battery pack through the scissor fork bracket in the RGV trolley, so that the unlocking mechanism on the storage table cooperates with the battery locking mechanism on the chassis of the electric heavy truck.

[0023] The beneficial effects of the present invention are:

[0024] 1. The chassis-based battery-swapping station for electric heavy trucks disclosed in the present invention changes the existing piggyback battery-swapping method, sets the battery of the electric heavy truck on the chassis, adopts the chassis battery-swapping method, and sets a battery-swapping robot to move to the bottom of the electric heavy truck to realize the removal and installation of the battery. On the one hand, it reduces the footprint of the battery-swapping station and makes the station easier to install. On the other hand, it not only improves the efficiency of battery replacement, but also improves the safety of battery replacement. In addition, during the movement of the battery-swapping robot, a bridge pad is set to realize the functional conversion of the parking platform. When the electric heavy truck enters the parking platform, the bridge pad plays a supporting role. During the battery-swapping process, the bridge pad moves to avoid and provide the battery-swapping robot with a battery-swapping space and a battery transportation space. It has strong applicability and good safety.

[0025] 2. The chassis-based battery-exchange station for electric heavy trucks disclosed in the present invention has a support frame that is sunken and arranged below the parking platform of the battery-exchange station and is used for the horizontal movement of the RGV trolley. The conveying frame is placed in the middle of the battery-exchange station body, and the length of the conveying frame is shorter than the support frame. The conveying frame is perpendicular to the parking platform, and the battery-exchange station bodies on both sides of the conveying frame are symmetrical. The conveying frame is used to transport the low-charge battery pack removed from the RGV trolley to the cache battery storage rack, or to transport the fully-charged battery pack on the cache battery storage rack to the RGV trolley. Through the horizontal movement of the connecting plate on the conveying frame and the vertical movement of the clamping plate, the battery-exchange battery packs at different positions on the RGV trolley can be clamped, and the transmission of the battery-exchange battery packs is more labor-saving and convenient, which solves the problem of long travel and low transmission efficiency in the process of transferring the battery packs between the existing RGV trolley and the cache battery storage rack, which increases the interaction time between low-charge and fully-charged, thereby increasing the cycle time of the entire station, and makes it more convenient to lift and disassemble the electric heavy trucks for battery replacement.

[0026] 3. The chassis-type battery-swapping station for electric heavy trucks disclosed in the present invention has a rotating mechanism on the bottom plate of the RGV car that rotates the storage platform to meet the battery-swapping needs of electric heavy trucks at different parking angles. The storage platform on the support plate is used to support the battery pack, and multiple battery packs can be transferred at the same time, solving the problem that the existing battery-swapping car has poor flexibility and can only replace one battery pack at a time, resulting in low work efficiency.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 This is a structural schematic diagram of a chassis-type battery-swapping station for electric heavy trucks of the present invention;

[0030] Figure 2 for Figure 1 The schematic diagram of the battery swap station without the electric heavy truck;

[0031] Figure 3 for Figure 1 A schematic diagram of the structure of the battery swap station without the battery swap channel housing;

[0032] Figure 4 for Figure 3 A top view of

[0033] Figure 5 This is a structural schematic diagram of the support frame and the conveying frame of the present invention installed in the warehouse of the battery swap station;

[0034] Figure 6 for Figure 5 A top view of

[0035] Figure 7 It is a structural schematic diagram of the connection between the support frame and the conveying frame in the present invention;

[0036] Figure 8 for Figure 7 Schematic diagram of the structure of the conveyor frame Figure 1 ;

[0037] Fig. 9 for Figure 7 Schematic diagram of the structure of the conveyor frame Figure 2 ;

[0038] Fig.10 For the present invention Figure 5 The structural diagram of the RGV trolley;

[0039] Fig.11 for Fig.10 The main view;

[0040] Fig.12 for Fig.11 Cross-sectional view along AA direction;

[0041] Fig.13 For the present invention Fig.10 Schematic diagram of the structure of the RGV trolley without the sheet metal shell.

[0042] Figure numerals: base plate 11, roller 12, rotating mechanism 13, ring gear 131, driving gear 132, support plate 14, storage table 15, scissor fork bracket 16, sheet metal shell 17, iron chain 18, battery replacement battery pack 19, support frame 21, movable guide rail 22, conveying frame 31, clamping plate 32, connecting plate 33, translation guide rail 34, limit baffle 35, second power assembly 36, third power assembly 37, fixed plate 38, battery replacement station body 41, stacker module 42, cache battery rack 43, water cooling module 44, observation room 45, parking platform 46, charger 47, electric heavy truck 48. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0044] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0045] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0046] The electric heavy trucks in the prior art mainly use a lifting battery replacement method to replace the battery. With the popularization of electric heavy trucks, the disadvantages of the lifting battery replacement method are becoming more and more obvious. On the one hand, the lifting battery replacement station occupies a large area and is inconvenient to build a station. On the other hand, the lifting battery replacement method is inefficient and has safety hazards. Therefore, combined with the battery replacement method of small and medium-sized vehicles in the prior art, a battery replacement method similar to the chassis battery replacement of small cars is proposed; the existing small car battery replacement platform generally needs to position the vehicle first so that the position of the battery on the vehicle can accurately correspond to the position of the unlocking mechanism, and then lift the vehicle to reserve a transportation channel for the battery replacement robot to enter the bottom of the vehicle, but the positioning and lifting methods for electric heavy trucks are not feasible, because the weight of the electric heavy truck is 10 to 20 times that of the car. Once the electric heavy truck enters the parking platform, it is difficult to push the electric heavy truck and move it. Positioning, it is even more impossible to lift the electric heavy truck to avoid the running channel of the battery replacement robot. Therefore, if you want to achieve chassis battery replacement for electric heavy trucks, you need to overcome the problems of difficult positioning and inability to lift.

[0047] like Figures 1 to 13 The shown electric heavy truck uses a chassis-based battery-swapping station. The battery of the electric heavy truck is set on the chassis. The chassis-based battery-swapping method is adopted. The entire battery-swapping station includes a battery-swapping station body 41 and a parking platform arranged in parallel with the battery-swapping station body 41. The parking platform is used for the parking of electric heavy trucks. A battery-swapping area for the RGV battery-swapping robot is opened below the middle of the parking platform. The battery-swapping area is below the parking platform and is located below the ground. The RGV trolley moves in the horizontal X direction below the ground to realize the removal and installation of the battery on the chassis of the electric heavy truck, which reduces the floor space of the battery-swapping station, makes the battery-swapping station easier to install, and also improves the battery-swapping efficiency and safety. That is, a support frame 21 is provided in the battery swapping area below the middle of the parking platform, a conveying frame 31 is stacked on the support frame 21, and the conveying frame 31 is placed in the middle of the battery swapping station warehouse 41. The length of the conveying frame 31 is shorter than the support frame 21, and the conveying frame 31 is perpendicular to the parking platform. The battery swapping station warehouses 41 on both sides of the conveying frame 31 are symmetrical. The conveying frame 31 is used to transport the low-power battery pack removed from the RGV trolley to the cache battery storage rack or to transport the fully charged battery pack on the cache battery storage rack to the RGV trolley. The RGV trolley moves in the horizontal X direction below the ground to realize the removal and installation of the battery on the chassis of the electric heavy truck, which reduces the floor space of the battery swapping station, makes the battery swapping station easier to install, and also improves the battery swapping efficiency and safety.

[0048] A group of movable guide rails 22 parallel to each other are fixedly installed at the bottom and side walls of the support frame 21 along the length direction, and a bridge pad is slidably installed on the top of the support frame 21. Moving blocks compatible with the corresponding side wall movable guide rails 22 and a fourth power component driving the moving block to move along the length direction of the support frame 21 are fixedly installed on both sides of the lower surface of the bridge pad. The fourth power component includes a fourth motor and a fourth reducer. The output end of the fourth motor is connected to the input end of the fourth reducer, and the output end of the fourth reducer is connected to the moving block; the bridge pad is driven by the fourth motor to move along the length direction of the support frame 21.

[0049] The support frame 21 is provided with two movable guide rails 22 in parallel along the length direction. The upper movable guide rail 22 facilitates the sliding of the bridge pad. When the bridge pad slides to the top of the RGV trolley, the entire parking platform is a whole, which is convenient for the electric heavy truck to pass through; after the electric heavy truck passes, the bridge pad slides to the lower side of the conveying frame 31 to expose the RGV trolley to disassemble and assemble the battery pack of the electric heavy truck.

[0050] The RGV trolley is matched with the movable guide rail 22 at the bottom of the corresponding support frame 21, and the rollers 12 at the four corners of the bottom plate 11 slide on the movable guide rail 22 at the bottom of the corresponding support frame 21, so that the RGV trolley moves along the horizontal X direction.

[0051] The conveying frame 31 includes translation guide rails 34 fixedly installed on both sides of the top of the conveying frame 31, a connecting plate 33 that moves horizontally along the translation guide rails 34, and a clamping plate 32 that moves vertically along the connecting plate 33. The connecting plate 33 is connected to a second power assembly 36, and the clamping plate 32 is connected to a third power assembly 37. The clamping plate 32 is L-shaped, and rectangular grooves are opened on both sides of the connecting plate 33. The clamping plate 32 is inserted into the corresponding rectangular grooves. A fixing plate 38 for installing the second power assembly 36 is fixedly installed on the conveying frame 31 between the translation guide rails 34. The second power assembly 36 includes a second motor and a third power assembly 37. The output end of the second motor is connected to the input end of the second reducer, and the output end of the second reducer is connected to the connecting plate 33; the connecting plate 33 is driven by the second motor to move horizontally in the X direction along the translation guide rail 34, and a limit baffle 35 is fixedly installed on the connecting plate 33 inside the clamping plate 32. The limit baffle 35 is used to fix the third power assembly 37. The third power assembly 37 includes a third motor and a third reducer. The output end of the third motor is connected to the input end of the third reducer, and the output end of the third reducer is connected to the clamping plate 32; the clamping plate 32 is driven by the third motor to move vertically in the Y direction along the connecting plate 33. Wedge blocks are fixedly installed at both ends of the opposite side of the limit baffle 35 to support the limit baffle 35 and improve its stability.

[0052] like Figures 6 to 10The RGV trolley shown includes a bottom plate 11, rollers 12 rotatably mounted at the four corners of the bottom plate 11, a rotating mechanism 13 mounted on the upper surface of the bottom plate 11, a support plate 14 mounted on the rotating mechanism 13, a plurality of groups of scissor fork brackets 16 mounted on the support plate 14, and a storage table 15 correspondingly mounted on each group of scissor fork brackets 16. The storage table 15 is used to support a battery pack 19 for battery replacement. The RGV trolley can simultaneously support multiple groups of scissor fork brackets 16 and storage tables 15, and simultaneously transfer multiple battery packs 19 for battery replacement. Each group of storage tables 15 and the corresponding scissor fork brackets 16 are covered with a sheet metal shell 17, which protects the storage table 15 and the corresponding scissor fork brackets 16.

[0053] The rotating mechanism 13 is used to rotate the storage platform 15 to meet the battery replacement requirements of electric heavy trucks at different parking angles. The rotating mechanism 13 includes a ring gear 131 fixedly connected to the support plate 14 and a driving gear 132 meshing with the ring gear 131. The rotating shaft of the ring gear 131 is fixed on the support plate 14, and the rotating shaft of the driving gear 132 is fixed on the bottom plate 11. A scale is fixedly installed on the ring gear 131. The rotation angle of the battery pack 19 on the support plate 14 can be adjusted through the ring gear 131. The radius of the driving gear 132 is smaller than the radius of the ring gear 131. In this way, the driving gear 132 rotates one circle, and the ring gear 131 only rotates a few teeth, realizing the precise adjustment of the rotation of the support plate 14 on the ring gear 131.

[0054] U-shaped slots are fixedly installed on the upper surface of the support plate 14 and on both sides of the lower surface of each corresponding group of storage tables 15. The four corners of the centrally hinged scissor fork bracket 16 are hinged on the corresponding U-shaped slots, and a slider is fixedly installed on one side of the U-shaped slot. The corresponding upper surface of the support plate 14 and the lower surface of the storage table 15 are fixedly installed with a slide rail used in conjunction with the slider. The upper surface of the support plate 14 is fixedly installed with a first power component corresponding to the storage table 15. The first power component can drive the scissor fork bracket 16 to close or open so that the scissor fork bracket 16 can drive the battery replacement battery pack 19 on each corresponding group of storage tables 15 to rise or fall, so as to replace the battery pack of the electric heavy truck. The specific first power assembly includes a first motor and a first reducer. The output end of the first motor is connected to the input end of the first reducer, and the output end of the first reducer is connected to the left U-shaped slot. The first motor can drive the U-shaped slot to move in a straight line along the corresponding slide rail through the first reducer, so that each set of scissor fork brackets 16 drives the corresponding storage table 15 to rise or fall. The battery replacement pack 19 on the storage table 15 is transported to a specified height position under the coordinated action of the scissor fork brackets 16 and the power assembly.

[0055] An iron chain 18 is fixedly connected between the bottom of the storage platform 15 and the U-shaped slot. When the scissor fork bracket 16 drives the corresponding storage platform 15 to rise or fall, the iron chain 18 can make the process more stable.

[0056] An unlocking mechanism is provided on each set of storage tables 15, and the unlocking mechanism is used in conjunction with the battery locking mechanism on the electric heavy truck chassis. After the transfer mechanism adjusts the position of the storage table 15 relative to the battery, it can cooperate with the locking mechanism to realize the removal and installation of the battery. Specifically, a matching unlocking mechanism is provided according to the form of the locking mechanism.

[0057] The conveying frame 31 is used as a transit cache rack for caching battery packs. The battery swap station warehouse 41 on both sides is provided with stacker modules 42 for moving battery packs, cache battery racks 43 for placing battery packs side by side, water cooling modules 44 for cooling the battery packs in the battery swap station warehouse 41, and observation room 45. The side of the conveying frame 31 away from the parking platform 46 is also a cache battery rack 43, that is, both sides of each stacker module 42 are cache battery racks 43. A charger 47 for charging the battery pack is provided in the battery swap station warehouse where the water cooling module 44 is located, and the observation room 45 is equipped with CNC equipment, so that the staff can view the working status of the battery swap station in real time.

[0058] The battery replacement method of the chassis battery replacement station for electric heavy trucks comprises the following steps:

[0059] S1. Before the electric heavy truck 48 enters the battery swap station, the gate recognizes the vehicle information, retrieves the vehicle battery information through the cloud platform, and determines that the vehicle model and related information match. If the vehicle matches the battery swap station, the gate opens to allow the vehicle to enter; if the vehicle does not match the battery swap station, the gate closes to prevent the vehicle from entering;

[0060] S2. The vehicle drives onto the parking platform 46 of the battery swap station, and the RGV trolley starts to work. The RGV trolley moves from the side of the parking platform 46 to the parking platform 46. During the movement, the bridge pad on the parking platform 46 opens, and the RGV trolley stops at the bottom of the electric heavy truck 48. The precise position of the battery pack is located by the detection mechanism. During this process, the storage platform is raised and lowered to the bottom of the battery pack through the scissor fork bracket in the RGV trolley, so that the unlocking mechanism on the storage platform cooperates with the battery locking mechanism on the chassis of the electric heavy truck 48;

[0061] S3, the RGV trolley drives the depleted battery pack removed from the electric heavy truck 48 to be moved out from the parking platform 46 to the bottom of the conveying frame, and at the same time, the bridge pad is reset. At this time, the bridge pad is closed on the parking platform 46 to ensure the integrity of the parking platform 46 and prevent people from mistakenly entering the parking platform 46 during this process. The clamping plate in the conveying frame takes away the depleted battery pack removed from the RGV trolley under the action of the third power assembly, and places it on the cache battery rack 43 on both sides of the stacker module 42 through the stacker in the stacker module 42 for charging;

[0062] S4, the action is opposite to step S3, the stacker in the stacker module 42 transfers the fully charged battery pack on the buffer battery rack 43 to the conveying frame, and transfers it to the RGV trolley through the clamping plate on the conveying frame to replace the battery for the electric heavy truck 48;

[0063] S5. After the electric heavy truck 48 completes battery replacement, the gate opens, and the electric heavy truck 48 drives out of the parking platform 46.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A chassis battery-swapping station for electric heavy trucks. It is characterized in that It includes a battery swap station body and a parking platform arranged parallel to the battery swap station body. A support frame is arranged at the battery swap area below the middle of the parking platform. A conveying frame is stacked on the support frame. The conveying frame is placed in the middle of the battery swap station body. The length of the conveying frame is shorter than the support frame. The battery swap station bodies on both sides of the conveying frame are symmetrical. The RGV trolley is slidably installed at the bottom of the conveying frame and moves along the horizontal X direction. The conveying frame includes translation guide rails fixedly installed on both sides of the top of the conveying frame, a connecting plate moving in the horizontal X direction along the translation guide rail, and a clamping plate moving in the vertical Y direction along the connecting plate.

2. The chassis-type battery-swapping station for electric heavy trucks as claimed in claim 1, It is characterized in that The battery swap station compartment on both sides of the conveying frame are successively equipped with stacker modules for moving battery packs, cache battery racks for placing battery packs side by side, water cooling modules for cooling the battery packs in the battery swap station compartment, and an observation room. The side of the conveying frame away from the parking platform is also a cache battery rack, that is, both sides of each stacker module are cache battery racks.

3. The chassis-type battery-swapping station for electric heavy trucks as claimed in claim 2, It is characterized in that The battery swap station where the water-cooling module is located is equipped with a charger for charging the battery pack, and the observation room is equipped with CNC equipment.

4. The chassis-type battery-swapping station for electric heavy trucks according to claim 1, It is characterized in that A group of parallel movable guide rails are fixedly installed on the bottom and side walls of the support frame along the length direction. A bridge pad is slidably installed on the top of the support frame. Moving blocks matched with the corresponding side wall movable guide rails and a fourth power assembly driving the movable blocks to move along the length direction of the support frame are fixedly installed on both sides of the lower surface of the bridge pad. The RGV trolley is matched with the movable guide rails at the bottom of the corresponding support frame.

5. The chassis-type battery-swapping station for electric heavy trucks as claimed in claim 4, It is characterized in that A second power assembly is connected to the connecting plate, a third power assembly is connected to the clamping plate, rectangular grooves are provided on both sides of the connecting plate, the clamping plate is inserted into the corresponding rectangular grooves, and a fixing plate for installing the second power assembly is fixedly installed on the conveying frame between the translation guide rails; the connecting plate is driven by the second motor to move horizontally in the X direction along the translation guide rail, a limit baffle is fixedly installed on the connecting plate on the inner side of the clamping plate, the limit baffle is used to fix the third power assembly, and the clamping plate is driven by the third motor to move vertically in the Y direction along the connecting plate.

6. The chassis-type battery-swapping station for electric heavy trucks as claimed in claim 5, It is characterized in that The RGV trolley includes a base plate, rollers rotatably installed at the four corners of the base plate, a rotating mechanism installed on the upper surface of the base plate, a support plate installed on the rotating mechanism, several groups of scissor fork brackets installed on the support plate, and a storage table correspondingly installed on each group of scissor fork brackets. The storage table is used to support the battery pack for battery replacement. The rotating mechanism includes a ring gear fixedly connected to the support plate and a driving gear meshing with the ring gear. The rotating shaft of the ring gear is fixed to the support plate, and the rotating shaft of the driving gear is fixed to the base plate.

7. The chassis-type battery-swapping station for electric heavy trucks as claimed in claim 6, It is characterized in that U-shaped slots are fixedly installed on the upper surface of the support plate and on both sides of the lower surface of each corresponding group of storage tables. The four corners of the centrally hinged scissor fork bracket are hinged on the corresponding U-shaped slots, and a slider is fixedly installed on one side of the U-shaped slot. The corresponding upper surface of the support plate and the lower surface of the storage table are fixedly installed with slide rails used in conjunction with the slider, and the upper surface of the support plate is fixedly installed with a first power component corresponding to the storage table.

8. The chassis-type battery-swapping station for electric heavy trucks as claimed in claim 7, It is characterized in that Each set of storage tables is provided with an unlocking mechanism, which is used in conjunction with the battery locking mechanism on the chassis of the electric heavy truck.

9. A method for replacing power at a chassis-type battery-changing station for electric heavy trucks, It is characterized in that The following steps are involved: S1. Before the electric heavy truck enters the battery swap station, the gate recognizes the vehicle information, retrieves the vehicle battery information through the cloud platform, and opens after determining that the vehicle model and related information match; S2. The vehicle drives onto the parking platform of the battery swap station, and the RGV trolley starts to work. The RGV trolley moves from the side of the parking platform to the parking platform. During the movement, the bridge pad on the parking platform opens, and the RGV trolley stops at the bottom of the electric heavy truck, and the precise position of the battery pack is located through the detection mechanism; S3, the RGV trolley drives the depleted battery pack removed from the electric heavy truck to be moved out from the parking platform to the bottom of the conveying frame. At the same time, the bridge pad is reset. At this time, the bridge pad is sealed on the parking platform to ensure the integrity of the parking platform and prevent people from mistakenly entering the parking platform during this process. The clamping plate in the conveying frame takes away the depleted battery pack removed from the RGV trolley under the action of the third power component, and places it on the cache battery racks on both sides of the stacker module through the stacker in the stacker module for charging; S4, the action is opposite to step S3, the palletizer in the stacker module transfers the fully charged battery pack on the cache battery rack to the conveying frame, and transfers it to the RGV trolley through the clamping plate on the conveying frame to replace the battery for the electric heavy truck; S5. After the battery replacement of the electric heavy truck is completed, the gate opens and the electric heavy truck drives out of the parking platform.

10. The battery replacement method of the chassis battery replacement station for electric heavy trucks as claimed in claim 9, It is characterized in that In step S2, the storage table is raised and lowered to the bottom of the battery pack through the scissor fork bracket in the RGV trolley, so that the unlocking mechanism on the storage table cooperates with the battery locking mechanism on the chassis of the electric heavy truck.

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