Chassis battery replacement method suitable for electric vehicle

Abstract

The application discloses a chassis battery replacement method suitable for an electric vehicle. A battery pack assembly of the vehicle is installed on a vehicle body girder of the vehicle. The chassis battery replacement method is suitable for a battery replacement station with a vehicle loading platform. The battery replacement station is used for replacing batteries of the vehicle parked on the vehicle loading platform. A battery replacement channel is arranged below the vehicle loading platform. The battery replacement channel is used for allowing a battery replacement trolley to drive to the lower side of the vehicle. The vehicle loading platform is provided with an operation opening used for performing a battery replacement operation. An opening and closing mechanism is arranged in the battery replacement channel below the operation opening to open or close the operation opening. The chassis battery replacement method comprises the following steps: the opening and closing mechanism opens the operation opening; the battery replacement trolley drives from the battery replacement channel to the lower side of the operation opening; the battery replacement trolley dismounts a battery pack assembly with insufficient power on the vehicle; the battery replacement trolley installs a battery pack assembly with sufficient power on the vehicle body girder of the vehicle; and the opening and closing mechanism closes the operation opening to form a complete driving channel, so that the vehicle can drive out.

Description

[0001] This application claims priority to Chinese patent applications CN2021116067637 and CN2021116067815, both filed on December 26, 2021, and Chinese patent application CN2021114443838, filed on November 30, 2021. The full text of the aforementioned Chinese patent applications is incorporated herein by reference. Technical Field

[0002] This invention relates to a chassis battery swapping method suitable for electric vehicles. Background Technology

[0003] Currently, the battery swapping modes for commercial vehicles, such as heavy trucks, light trucks, and tractors, mostly involve methods such as top-mounted battery swapping and side-grabbing battery swapping.

[0004] The side gripping mechanism uses a rigid gripping mechanism, with no flexible link between the gripping mechanism and the battery. If the accuracy is low or the position is misaligned, the force required to correct the position will be very large, which can cause significant damage to the guiding mechanism. Therefore, relatively high control precision is required.

[0005] Top-mounted systems, which use flexible steel cables to suspend the battery pack, are relatively easy to maintain compatibility with errors when approaching the mounting point. However, the gripping mechanism is located above the vehicle, resulting in a relatively high overall height of the equipment, which is not conducive to urban construction. Furthermore, the positioning method of top-mounted systems is rather rudimentary, requiring a high level of driving skill from the driver, and the success rate of battery swapping will significantly decrease if the vehicle is not parked on time.

[0006] To address the needs of existing trucks and cater to future pure electric heavy-duty commercial trucks, an alternative battery swapping method is required, applicable to both existing truck chassis (with driveshafts) and future pure electric chassis (without driveshafts but with electric drive). Simultaneously, higher battery swapping success rates and speeds must be pursued. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of low battery swapping efficiency and low battery swapping success rate in the prior art, and to provide a chassis battery swapping method suitable for electric vehicles.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] A chassis-based battery swapping method for electric vehicles, wherein the vehicle's battery pack assembly is mounted on the vehicle's body beam, and the method is applicable to battery swapping stations with a vehicle platform for swapping the battery of a vehicle parked on the platform. A battery swapping channel is provided beneath the platform for a battery swapping trolley to travel beneath the vehicle. The platform has an operating port for performing the battery swapping operation, and an opening / closing mechanism is provided within the battery swapping channel below the operating port to open or close the port. The chassis-based battery swapping method includes the following steps:

[0010] The opening and closing mechanism opens the operating port;

[0011] The battery swapping trolley travels from the battery swapping channel to below the operating port;

[0012] The battery swapping vehicle removes the depleted battery pack assembly from the vehicle.

[0013] The battery swapping vehicle installs a fully charged battery pack assembly onto the vehicle's body frame.

[0014] The opening and closing mechanism closes the operating port to form a complete driving channel, so that the vehicle can drive out.

[0015] In this invention, by controlling the opening and closing of the operating port through the above-described method steps and setting an opening and closing mechanism in the battery swapping channel, the space in the width direction of the battery swapping station is saved, the vehicle chassis battery swapping is realized, the battery swapping success rate and battery swapping speed are improved, and the battery swapping efficiency is greatly improved.

[0016] Preferably, the following steps are included before the step of parking the vehicle on the vehicle platform:

[0017] The opening and closing mechanism closes the operating port to form a complete driving passage.

[0018] In this invention, since the operating port is located on the driving lane, the operating port is closed before the battery swapping begins to form a complete driving lane, so that the vehicle can drive into the battery swapping position.

[0019] Preferably, the battery swapping trolley travels in a different direction than the opening and closing direction of the opening and closing mechanism, so as to avoid the battery swapping trolley.

[0020] In this invention, interference between the opening and closing mechanism and the movement path of the battery swapping trolley is prevented.

[0021] Preferably, the opening and closing mechanism includes a lifting platform located in the battery swapping channel below the operating port, and the lifting platform is controlled to lower or raise to open or close the operating port.

[0022] In this invention, for the opening and closing mechanism of the lifting platform, it is raised to form a complete driving passage before battery swapping.

[0023] Preferably, during the step of opening the operating port by the opening and closing mechanism, the lifting platform is controlled to descend so that the lifting platform and the battery swapping channel are on the same plane;

[0024] In the step of the battery swapping trolley traveling from the battery swapping channel to below the operating port, the battery swapping trolley travels along the battery swapping channel to below the operating port and stops on the lifting platform.

[0025] In this invention, for the lifting platform-type opening and closing mechanism, the battery swapping trolley is first placed on the lifting platform, and then the lifting platform is raised, allowing the battery swapping trolley to reach the battery swapping position. This lifting platform can operate below the driving lane, increasing the gap between the lifting platform's bearing surface and the vehicle chassis. This significantly increases the height difference between the battery swapping trolley and the vehicle chassis when the trolley travels to the bearing surface to perform battery swapping, enabling battery swapping operations on taller batteries. Therefore, there is no longer a limitation on the height of vehicle batteries for chassis-based battery swapping, meeting the needs of more vehicle models for rapid battery swapping.

[0026] Preferably, when the battery swapping trolley is located on the lifting platform, the lifting platform raises and lowers, thereby raising and lowering the battery swapping trolley to move closer to or further away from the vehicle to perform the battery swapping operation.

[0027] In this invention, the battery swapping trolley is raised and lowered by a lifting platform to facilitate the battery swapping operation, which eliminates the need for a lifting structure on the battery swapping trolley, simplifies the structure, and reduces costs.

[0028] Preferably, the step of closing the operating port to form a complete driving passage by the opening and closing mechanism further includes:

[0029] Control the lifting platform to rise so that the lifting platform and the vehicle platform form a complete driving passage.

[0030] In this invention, the lifting platform provides support for the vehicle so that it can move.

[0031] Preferably, the opening and closing mechanism includes an opening and closing door, which is disposed on one or both sides of the operating port. The opening and closing door lowers or rises to open or close the operating port. When the opening and closing door is opened, it avoids the power swapping equipment.

[0032] In this invention, for opening and closing mechanisms of the form of single / double-sided opening and closing doors, the above arrangement effectively prevents interference between the opening and closing mechanism and the movement path of the battery swapping trolley.

[0033] Preferably, the opening and closing mechanism includes a plurality of load-bearing beams, a first guide portion and a second guide portion arranged at a preset angle, the first guide portion being parallel to the driving surface of the vehicle platform, the second guide portion being located below the operating port, and the plurality of load-bearing beams switching positions between the first guide portion and the second guide portion to open or close the operating port.

[0034] During the opening or closing of the operating port in this invention, the load-bearing beam can switch positions between the first guide portion and the second guide portion, which are at a preset angle, so that the first and second guide portions can adjust the angle between the load-bearing beam and the horizontal direction to cooperate with the opening and closing mechanism to achieve the supporting function.

[0035] Preferably, the direction of movement of the load-bearing beams along the first guide is parallel to the direction of travel of the vehicle.

[0036] In this invention, the above arrangement enables the load-bearing effect of the load-bearing beam to be better, the structure to be more stable, and saves space to the greatest extent, thereby improving the space utilization rate.

[0037] Preferably, the vehicle platform includes an adjustment unit for adjusting the angle between the vehicle and the driving lane in the horizontal plane, and after the vehicle is parked on the vehicle platform, the following steps are also included:

[0038] The adjustment unit adjusts the vehicle's body angle to meet the battery swapping requirements.

[0039] In this invention, the vehicle body angle is adjusted in advance before battery swapping to improve the success rate of battery swapping.

[0040] Preferably, the adjustment unit moves the position of the vehicle's front wheels in a horizontal plane to adjust the vehicle body angle.

[0041] In this invention, adjusting the position of the vehicle's front wheels within the horizontal plane of the vehicle platform allows for more convenient and effective adjustment of the angle between the battery pack assembly on the vehicle and the battery swapping trolley.

[0042] Preferably, the step of the adjusting part adjusting the vehicle body angle is performed simultaneously with the step of the opening and closing mechanism opening the operating port.

[0043] In this invention, the two steps of adjusting the vehicle position and opening / closing the mechanism are performed simultaneously during battery swapping, which can effectively shorten the time of a single battery swap and improve battery swapping efficiency.

[0044] Preferably, the chassis battery swapping method further includes the following steps:

[0045] Detect whether the battery swapping vehicle and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position;

[0046] If so, proceed with the step of removing the depleted battery pack assembly from the vehicle;

[0047] If not, perform the step of adjusting the vehicle body angle, and repeat the steps of detecting whether the battery swapping trolley and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position and adjusting the vehicle body angle until the battery swapping trolley and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position.

[0048] In this invention, before the battery pack assembly is removed from the battery swapping vehicle, multiple calibrations are performed to confirm whether the battery pack assembly and the battery swapping vehicle are in the battery swapping unlock position, so as to avoid repeated operations due to accidental unlocking failure, which would result in excessively long battery swapping time.

[0049] Preferably, the chassis battery swapping method further includes the following steps:

[0050] The battery swapping vehicle carries the depleted battery pack assembly and leaves from below the operating port, moving it into the cargo compartment.

[0051] In this invention, after the battery pack assembly is disassembled, the battery swapping vehicle transports the depleted battery pack assembly to the cargo warehouse so that the depleted battery pack assembly can be charged as soon as possible.

[0052] Preferably, the battery swapping vehicle includes a first battery swapping vehicle and a second battery swapping vehicle. The first battery swapping vehicle removes the depleted battery pack assembly from the vehicle, and the second battery swapping vehicle installs the fully charged battery pack assembly onto the vehicle's body beam.

[0053] In this invention, two battery swapping trolleys are used simultaneously for battery swapping operations. Disassembly prepares for the subsequent installation step, and installation prepares for the next disassembly step, which significantly improves battery swapping efficiency.

[0054] Preferably, the following steps are further included before the vehicle is parked on the vehicle platform:

[0055] The second transfer device picks up and places the fully charged battery pack assembly onto the second battery swapping trolley located in the waiting area inside the second warehouse.

[0056] In this invention, the battery pack assembly to be installed is placed on the second battery swapping cart before disassembling the battery pack assembly, saving time in retrieving the battery.

[0057] Preferably, the chassis battery swapping method further includes the following steps:

[0058] The second battery swapping vehicle, carrying a fully charged battery pack, enters the battery swapping channel for use.

[0059] In this invention, the battery pack assembly to be installed is transported to the battery swapping channel by the second battery swapping trolley while the battery pack assembly is being disassembled, saving time in transferring the battery.

[0060] Preferably, the chassis battery swapping method further includes the following steps:

[0061] The first battery swapping vehicle carrying the depleted battery pack assembly leaves from below the operating port, and the second battery swapping vehicle carrying the fully charged battery pack assembly moves to below the operating port.

[0062] In this invention, when the first battery swapping trolley leaves, the second battery swapping trolley quickly enters the battery swapping position, which can save time and achieve high battery swapping efficiency.

[0063] Preferably, the chassis battery swapping method further includes the following steps:

[0064] The first battery swapping vehicle carries the depleted battery pack assembly to the first cargo compartment.

[0065] In this invention, the depleted battery pack assembly is transported to the charging station while the battery pack assembly is being installed, thus reducing the battery transportation time.

[0066] Preferably, the chassis battery swapping method further includes the following steps:

[0067] The first transfer device transfers the depleted battery pack components from the first battery swapping vehicle to the charging area in the first cargo warehouse for charging.

[0068] In this invention, the depleted battery pack assembly is transported to the charging station while the battery pack assembly is being installed, thus reducing the battery transportation time.

[0069] Preferably, the chassis battery swapping method further includes the following steps:

[0070] The first battery swapping vehicle is on standby in the first cargo compartment.

[0071] In this invention, before the current battery swapping process ends and the next battery swapping process begins, the first battery swapping vehicle does not need to enter the battery swapping channel. Staying in the first cargo warehouse can prevent the first battery swapping vehicle from being exposed to the outside world, thereby extending the service life of the first battery swapping vehicle.

[0072] Preferably, the following steps are further included before the opening / closing mechanism closes the operating port:

[0073] The second battery swapping trolley leaves from below the operating port and moves into the second cargo compartment.

[0074] In this invention, before the current battery swapping process ends and the next battery swapping process begins, the second battery swapping trolley is brought into the second cargo compartment to facilitate the immediate removal of fully charged battery pack components, thereby improving battery swapping efficiency.

[0075] The positive and progressive effects of this invention are as follows: It controls the opening and closing mechanism to operate in a first position and close the battery swapping operation port to allow vehicles to enter the battery swapping area. Simultaneously, it can also control the opening and closing mechanism to operate in a second position lower than the driving lane, saving space in the width direction of the battery swapping station. This chassis-based battery swapping method for electric vehicles enables chassis-based battery swapping, improving the success rate and speed of battery swapping, and significantly increasing battery swapping efficiency. Attached Figure Description

[0076] Figure 1 This is a partial structural diagram of the battery swapping station in Embodiment 1 of the present invention.

[0077] Figure 2 This is a schematic diagram of the structure of the battery swapping station in the closed state of the switchboard in Embodiment 1 of the present invention.

[0078] Figure 3 This is a schematic diagram of the opening and closing mechanism in the open state in Embodiment 2 of the present invention.

[0079] Figure 4 This is a schematic diagram of the opening and closing mechanism in the closed state in Embodiment 2 of the present invention.

[0080] Figure 5 This is a schematic diagram of the overall structure of the battery swapping station in the open state according to Embodiment 2 of the present invention.

[0081] Figure 6 This is a flowchart of the chassis battery swapping method in Embodiment 3 of the present invention.

[0082] Figure 7 This is a flowchart of the chassis battery swapping method in Embodiment 4 of the present invention.

[0083] Explanation of reference numerals in the attached figures:

[0084] 100 vehicle platform

[0085] Operation port 110

[0086] 200 opening and closing doors

[0087] Slider 201

[0088] Slide rail 202

[0089] Drive Unit 203

[0090] Lifting Platform 300

[0091] Shuttle 400

[0092] First shuttle 401

[0093] Second shuttle 402 Detailed Implementation

[0094] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0095] Example 1

[0096] like Figure 1 and Figure 2 As shown, this embodiment provides a battery swapping station suitable for chassis-based battery swapping of electric vehicles. The battery swapping station has a driving lane, with a vehicle platform 100 positioned along the driving lane, and a battery swapping channel below the vehicle platform 100. The vehicle platform 100 has an operating port 110 for performing battery swapping operations. When a vehicle is swapping batteries, it is parked above the operating port 110, with the front and rear wheels of the vehicle on the vehicle platform 100, and the battery pack assembly located at the operating port 110. Below the operating port 110 is the battery swapping channel, which allows the battery swapping equipment to travel to the underside of the vehicle. Specifically, in this embodiment, the battery swapping equipment is a battery swapping trolley. An opening and closing mechanism is provided within the battery swapping channel below the operating port 110 to open or close the operating port 110.

[0097] In this embodiment, as Figure 2 As shown, the opening and closing mechanism includes an opening and closing door 200. The opening and closing door 200 is located on both sides of the operation port 110. The drive unit 203 is connected to the bottom of the opening and closing door 200. The drive unit 203 drives the opening and closing door 200 to descend or rise to open or close the operation port 110. When the opening and closing door 200 is open, the opening and closing door 200 avoids the battery swapping equipment, which can effectively prevent the opening and closing mechanism from interfering with the movement path of the battery swapping trolley.

[0098] The bottom of the opening and closing door 200 is provided with a slider rail structure. One end of the drive unit 203 is rotatably connected to the slider 201. The slider 201 can slide freely on the rail 202. The piston rod on the drive unit 203 extends to drive the opening and closing door to rise and close the operation port 110. The piston rod on the drive unit 203 retracts to drive the opening and closing door to fall and close the operation port 110. At this time, the opening and closing door 200 is located on the side of the vehicle platform 100 on both sides of the operation port.

[0099] In another embodiment, the opening and closing mechanism includes multiple load-bearing beams and a first guide portion and a second guide portion set at a preset angle. The first guide portion is parallel to the driving surface of the vehicle platform 100, and the second guide portion is located below the operating port 110. In this embodiment, two load-bearing beams are provided on one side of the opening and closing door 200, located at the left and right ends of the opening and closing door 200 respectively. The load-bearing beams switch positions between the first guide portion and the second guide portion to open or close the operating port 110. The movement direction of the load-bearing beams along the first guide portion is parallel to the driving direction of the vehicle. During the opening or closing of the operating port 110, the load-bearing beams can switch positions between the first guide portion and the second guide portion set at a preset angle, so that the first and second guide portions can adjust the angle between the load-bearing beams and the horizontal direction to cooperate with the opening and closing of the opening and closing mechanism and achieve a supporting function.

[0100] The above two opening and closing mechanisms make full use of the space under the vehicle platform, saving space in the width direction of the battery swapping station.

[0101] In this embodiment, the vehicle platform 100 includes an adjustment unit for adjusting the angle between the vehicle and the driving lane in the horizontal plane. Specifically, the adjustment unit moves the position of the vehicle's front wheels in the horizontal plane to adjust the vehicle body angle.

[0102] The adjustment unit is located on the vehicle platform 100. When the vehicle is parked on the platform 100, the front wheels are positioned on the adjustment unit. Since the front wheels are generally driven wheels and the weight distribution at the front of the vehicle is relatively light, the adjustment unit can move the front wheels in a horizontal plane, thereby moving the front of the vehicle as well, thus adjusting the vehicle's angle. Only when the vehicle's angle is within the normal range can the battery swapping trolley in the battery swapping channel align with the battery pack assembly on the vehicle for the next battery swapping operation.

[0103] Specifically, the adjustment unit includes multiple sets of rollers that roll in a horizontal plane, and these rollers are driven by a motor. In this embodiment, the multiple sets of rollers can roll back and forth perpendicular to the vehicle's travel direction, allowing the vehicle's front wheels to move left and right on the adjustment unit, thus moving the front of the vehicle left and right. In other embodiments of the invention, the adjustment unit can also take the form of tracks or the like to achieve the same effect.

[0104] In this embodiment, the position of the vehicle's front wheels is pre-adjusted using the adjustment unit on the vehicle platform 100 before battery swapping, thereby adjusting the vehicle's body angle and the angle between the battery pack assembly on the vehicle and the battery swapping trolley, thus improving the success rate of battery swapping. The above implementation method is relatively more convenient to operate, simpler in structure, and easier to implement.

[0105] Example 2

[0106] like Figures 3 to 5As shown, this embodiment provides a battery swapping station, whose structure is roughly the same as that in Embodiment 1. The difference between the two lies in the setting of the opening and closing mechanism.

[0107] Specifically, this embodiment provides a specific implementation of an opening and closing mechanism using a lifting platform to further illustrate the present invention. The opening and closing mechanism includes a lifting platform 300, which is located in the battery swapping channel below the operating port 110. The operating port 110 is opened or closed by controlling the lifting platform 300 to descend or rise.

[0108] The lifting platform 300 is raised to form a complete driving channel with the vehicle platform 100. The lifting platform 300 is lowered to align with the battery swapping channel on the same plane. The shuttle 400 travels along the battery swapping channel to below the operating port 110 and stops on the lifting platform 300. When the shuttle 400 is on the lifting platform 300, the raising and lowering of the lifting platform 300 simultaneously raises and lowers the shuttle 400, allowing it to approach or move away from the vehicle for battery swapping. In this way, the lifting platform 300 serves not only as an opening and closing mechanism within the battery swapping station but also as a lifting structure for the shuttle 400, simplifying the shuttle 400's structure and indirectly extending its power consumption and lifespan.

[0109] In this embodiment, the lifting platform 300 can be moved to a position lower than the driving lane, increasing the gap between the lifting platform 300 bearing surface and the vehicle chassis. This significantly increases the height difference between the shuttle 400 and the vehicle chassis when the shuttle 400 travels to the bearing surface to perform battery swapping on the vehicle, enabling battery swapping operations on taller batteries. As a result, there is no longer a limitation on the height of the vehicle battery for chassis-based battery swapping, thus meeting the needs of more vehicle models for rapid battery swapping.

[0110] Example 3

[0111] This embodiment provides a chassis-based battery swapping method suitable for electric vehicles, which can be used in the battery swapping stations described in Embodiments 1 and 2 above. The battery pack assembly of the electric vehicle is mounted on the vehicle's body frame.

[0112] In this embodiment, as Figure 6 As shown, the chassis battery swapping method includes the following steps:

[0113] The opening and closing mechanism opens the operating port 110;

[0114] The battery swapping trolley travels from the battery swapping channel to below the operating port 110;

[0115] The battery swapping vehicle removes the depleted battery pack components from the vehicle;

[0116] The battery swapping vehicle installs a fully charged battery pack onto the vehicle's main frame.

[0117] The opening and closing mechanism closes the operating port 110 to form a complete driving channel so that vehicles can drive out.

[0118] The chassis battery swapping method in this embodiment enables battery swapping of electric vehicles through the chassis, improving the success rate and speed of battery swapping, and significantly increasing battery swapping efficiency.

[0119] Specifically, in this embodiment, the vehicle first stops at the battery swapping location, the opening and closing mechanism opens the operating port 110, and the battery swapping trolley drives to below the operating port 110; then, the battery swapping trolley removes the depleted battery pack assembly and installs the fully charged battery pack assembly onto the vehicle; finally, the opening and closing mechanism closes the operating port 110, forming a complete driving channel for the vehicle to drive away.

[0120] In this battery swapping process, each step does not require a long wait or high precision requirements for any operation. Therefore, in the chassis battery swapping method of this embodiment, the battery swapping speed and success rate are both high, and the overall battery swapping efficiency of the battery swapping station is significantly improved.

[0121] Specifically, this embodiment includes the following steps before the step of parking the vehicle on the vehicle platform 100:

[0122] The opening and closing mechanism closes the operating port 110 to form a complete driving channel.

[0123] Since the operating port 110 in this embodiment is located on the driving lane, the operating port 110 needs to be closed to form a complete driving lane before the battery swapping can begin, so that the vehicle can drive into the battery swapping position.

[0124] Specifically, in this embodiment, the battery swapping trolley travels in a different direction than the opening / closing mechanism to avoid interfering with its movement path. Based on this, when the vehicle in this embodiment stops at the battery swapping position, the battery swapping trolley can simultaneously travel within the battery swapping channel to the position, completing its pre-arrival. Once the opening / closing mechanism opens, the battery swapping operation can begin. With the risk of interference completely eliminated, the operations of each part no longer require waiting, significantly improving battery swapping efficiency.

[0125] After the vehicle is parked on the vehicle platform 100, the following steps are also included:

[0126] The adjustment unit adjusts the vehicle's body angle to meet the battery swapping requirements.

[0127] In this embodiment, the position of the vehicle's front wheels is pre-adjusted using the adjustment unit on the vehicle platform 100 before battery swapping, thereby adjusting the vehicle's body angle and the angle between the battery pack assembly on the vehicle and the battery swapping trolley, thus improving the success rate of battery swapping. The above implementation method is relatively more convenient to operate, simpler in structure, and easier to implement.

[0128] Furthermore, the steps of adjusting the vehicle's body angle by the adjustment unit and opening the operation port 110 by the opening and closing mechanism are performed simultaneously. By performing both the vehicle position adjustment and the opening and closing mechanism simultaneously during battery swapping, the time for a single battery swap can be effectively shortened, and the battery swapping efficiency can be improved.

[0129] Specifically, the chassis battery swapping method in this embodiment further includes the following steps:

[0130] Check whether the battery swapping vehicle and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position;

[0131] If so, proceed with the steps of removing the depleted battery pack assembly from the vehicle;

[0132] If not, perform the step of adjusting the vehicle's body angle, and repeat the steps of checking whether the battery swapping trolley and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position and adjusting the vehicle's body angle until the battery swapping trolley and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position.

[0133] Specifically, the primary reason for battery swapping failure is misalignment between the battery swapping cart and the battery pack assembly. To avoid this problem, multiple calibrations are performed before the battery pack assembly is removed from the battery swapping cart to confirm that both the battery pack assembly and the battery swapping cart are in the battery swapping unlock position. This prevents accidental unlocking failures that could force repeated operations and result in excessively long battery swapping times.

[0134] Those skilled in the art should understand that the time wasted on a single failed battery swap is far greater than the time spent on multiple position calibrations. Therefore, while improving position accuracy, it is also necessary to confirm the alignment between the battery swapping trolley and the battery pack components on the vehicle multiple times before swapping the battery.

[0135] Furthermore, the battery swapping position of the battery swapping vehicle can be fixed by marking or storing it, ensuring that it is in the same position as much as possible during each battery swap. The position between the vehicle and the vehicle can then be adjusted by moving the front wheels through the adjustment unit. This implementation method is relatively more stable and is beneficial for multiple battery swapping vehicles working together, avoiding the need for each vehicle to repeatedly calibrate its position.

[0136] Specifically, in this embodiment, the chassis battery swapping method further includes the following steps:

[0137] The battery swapping vehicle carries the depleted battery pack assembly out from below the operation port 110 and moves into the cargo compartment.

[0138] After the battery pack assembly is disassembled in this embodiment, the battery swapping vehicle transports the depleted battery pack assembly to the cargo warehouse so that the depleted battery pack assembly can be charged as soon as possible, in preparation for the next battery swap.

[0139] Furthermore, to achieve higher battery swapping efficiency, the battery swapping vehicle in this embodiment includes a first battery swapping vehicle and a second battery swapping vehicle. The first battery swapping vehicle removes the depleted battery pack assembly from the vehicle, and the second battery swapping vehicle installs the fully charged battery pack assembly onto the vehicle's body frame. The cargo compartment interacting with the first battery swapping vehicle is a first cargo compartment, which contains a first transfer device for transferring the battery pack assembly between the first battery swapping vehicle and the first cargo compartment. Similarly, the cargo compartment interacting with the second battery swapping vehicle is a second cargo compartment, which contains a second transfer device for transferring the battery pack assembly between the second battery swapping vehicle and the second cargo compartment.

[0140] Two battery swapping trolleys are used simultaneously for battery swapping operations, and are equipped with corresponding cargo compartments and transfer equipment. Disassembly prepares for the subsequent installation steps, and installation prepares for the next disassembly step, which significantly improves battery swapping efficiency.

[0141] Those skilled in the art should understand that, in order to improve battery swapping efficiency, the first and second battery swapping trolleys should not interfere with each other. In particular, when the first battery swapping trolley is disassembling the battery pack assembly and the second battery swapping trolley is installing the battery pack assembly, they should not be present at the battery swapping location simultaneously. As for the other steps, their order is determined according to the actual process sequence; this embodiment does not limit the order of the steps in the chassis battery swapping method.

[0142] However, in other embodiments of the present invention, the operation of the first battery swapping vehicle and the second battery swapping vehicle can obviously be performed simultaneously, thereby further improving the battery swapping efficiency. It should be noted that this principle also applies to the following steps in this embodiment.

[0143] For the second battery swapping vehicle, specifically, the following steps are included before the vehicle docks at the vehicle platform 100:

[0144] The second transfer device picks up and places the fully charged battery pack assembly onto the second battery swapping trolley located in the waiting area inside the second warehouse.

[0145] In this embodiment, before the first battery swapping trolley removes the battery pack assembly, the second transfer device first places the battery pack assembly to be installed on the second battery swapping trolley, thereby saving time in retrieving the battery pack assembly.

[0146] Furthermore, the chassis battery swapping method also includes the following steps:

[0147] The second battery swapping vehicle, carrying a fully charged battery pack, enters the battery swapping channel for use.

[0148] Furthermore, the chassis battery swapping method also includes the following steps:

[0149] The first battery swapping trolley carrying the depleted battery pack moves away from below the operation port 110, while the second battery swapping trolley carrying the fully charged battery pack moves to below the operation port 110.

[0150] In this embodiment, to avoid waiting for the second battery swapping cart to transport the fully charged battery pack assembly to the swapping location after the first battery swapping cart removes the battery, the battery pack assembly to be installed is transported to the swapping channel by the second battery swapping cart simultaneously with the battery pack assembly removal. After the first battery swapping cart leaves, the second battery swapping cart immediately enters the swapping location, which not only avoids repeated calibration of the swapping location but also saves time in transporting the battery.

[0151] Specifically, the chassis battery swapping method also includes the following steps:

[0152] The first battery swapping vehicle carries the depleted battery pack components to the first cargo compartment.

[0153] In the battery swapping method of this embodiment, the depleted battery pack assembly is transported to the charging point while the battery pack assembly is being installed, thus reducing the battery transportation time.

[0154] Furthermore, the chassis battery swapping method also includes the following steps:

[0155] The first transfer device transports the depleted battery pack components from the first battery swapping trolley to the charging area in the first cargo warehouse for charging.

[0156] In the battery swapping method of this embodiment, while the battery pack assembly is installed on the second battery swapping trolley, the idle first battery swapping trolley is used to transport the depleted battery pack assembly to the charging point, which effectively reduces the transportation time of the battery pack assembly.

[0157] Specifically, the chassis battery swapping method also includes the following steps:

[0158] The first battery swapping vehicle is waiting in the first cargo warehouse.

[0159] In the battery swapping method of this embodiment, the first battery swapping vehicle does not need to enter the battery swapping channel immediately before the current battery swapping process ends and the next battery swapping process begins. Keeping it in the first cargo warehouse can prevent the first battery swapping vehicle from being exposed to the outside world, thereby extending the service life of the first battery swapping vehicle.

[0160] Specifically, the following steps are included before the opening and closing mechanism closes the operating port 110:

[0161] The second battery swapping trolley leaves from below the operating port 110 and moves into the second cargo compartment.

[0162] In the battery swapping method of this embodiment, allowing the second battery swapping vehicle to enter the second cargo compartment before the current battery swapping process ends and the next battery swapping process begins is beneficial for retrieving the fully charged battery pack components more promptly, preparing for subsequent steps and improving battery swapping efficiency.

[0163] Example 4

[0164] The difference between this embodiment and Example 3 lies in the specific use of a lifting platform 300 for the opening and closing mechanism, which further illustrates the present invention. In the chassis battery swapping method of this embodiment, the battery swapping trolley is an RGV, i.e., a shuttle 400. In this embodiment, the shuttle includes a first shuttle 401 and a second shuttle 402. The opening and closing mechanism includes a lifting platform 300, which is located in the battery swapping channel below the operating port 110. The operating port 110 is opened or closed by controlling the lifting platform 300 to descend or rise. Specific methods include... Figure 7 As shown in the image.

[0165] The step of closing the operating port 110 of the opening and closing mechanism to form a complete driving passage also includes:

[0166] Control the lifting platform 300 to rise so that the lifting platform 300 and the vehicle platform 100 form a complete driving passage.

[0167] During the step of opening the operating port 110 by the opening and closing mechanism, the lifting platform is controlled to descend so that the lifting platform and the battery swapping channel are on the same plane.

[0168] When the lifting platform 300 is raised and the operating port 110 is closed, the lifting platform is flush with the vehicle platform 100 to form a complete driving channel; when the lifting platform 300 is lowered and the operating port 110 is opened, the lifting platform 300 is flush with the bottom surface of the battery swapping channel, so that the shuttle vehicle 400 can drive from the battery swapping channel onto the lifting platform 300.

[0169] In the step where the shuttle 400 travels from the battery swapping channel to below the operating port 110, the shuttle 400 travels along the battery swapping channel to below the operating port 110 and stops on the lifting platform 300. Before swapping the battery, the shuttle 400 is first parked on the lifting platform 300, and then the lifting platform 300 is raised, so that the shuttle 400 reaches the battery swapping position.

[0170] When the shuttle 400 is positioned on the lifting platform 300, the lifting of the lifting platform 300 simultaneously raises and lowers the shuttle 400, allowing it to approach or move away from the vehicle for battery swapping. In this way, the lifting platform 300 not only serves as an opening and closing mechanism within the battery swapping station but also as a lifting structure for the shuttle 400, simplifying its structure and indirectly extending its energy consumption and lifespan. The lifting platform 300 can operate below the vehicle aisle, increasing the clearance between its load-bearing surface and the vehicle chassis. This significantly increases the height difference between the shuttle 400 and the vehicle chassis when it approaches the load-bearing surface for battery swapping, enabling battery swapping operations on taller batteries. This removes the height restriction on vehicle batteries swapped via the chassis, meeting the needs of more vehicle models for rapid battery swapping.

[0171] Those skilled in the art should understand that the above-described embodiments are merely one example of the embodiments of the present invention. Those skilled in the art can make appropriate adjustments based on the internal structure of the battery swapping station and select the most suitable opening and closing mechanism to achieve the above effects. However, conversely, similar chassis-based battery swapping methods applied to this battery swapping station should all fall within the protection scope of the present invention.

[0172] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A chassis battery swapping method suitable for electric vehicles, characterized in that, The battery pack assembly of the vehicle is mounted on the vehicle's body frame. The chassis battery swapping method is applicable to battery swapping stations with a vehicle platform, used for swapping the battery of the vehicle parked on the vehicle platform. A battery swapping channel is provided below the vehicle platform for the battery swapping trolley to travel under the vehicle. The vehicle platform has an operating port for performing battery swapping operations. An opening and closing mechanism is provided in the battery swapping channel below the operating port to open or close the operating port. The chassis battery swapping method includes the following steps: The opening and closing mechanism opens the operating port; The battery swapping trolley travels from the battery swapping channel to below the operating port; The battery swapping vehicle removes the depleted battery pack assembly from the vehicle. The battery swapping vehicle installs a fully charged battery pack assembly onto the vehicle's body frame. The opening and closing mechanism closes the operating port to form a complete driving channel so that the vehicle can drive out; The opening and closing mechanism includes a lifting platform. When the battery swapping trolley is located on the lifting platform, the lifting platform rises and falls, thereby driving the battery swapping trolley to rise and fall, so as to move closer to or away from the vehicle to perform battery swapping operations.

2. The chassis battery swapping method for electric vehicles as described in claim 1, characterized in that, The following steps are included before the step of parking the vehicle on the vehicle platform: The opening and closing mechanism closes the operating port to form a complete driving passage.

3. The chassis battery swapping method for electric vehicles as described in claim 1, characterized in that, The battery swapping trolley travels in a different direction than the opening and closing direction of the opening and closing mechanism, so as to avoid the battery swapping trolley.

4. The chassis battery swapping method for electric vehicles as described in claim 3, characterized in that, The lifting platform is located in the battery swapping channel below the operating port, and the lifting platform is controlled to lower or raise to open or close the operating port.

5. The chassis battery swapping method for electric vehicles as described in claim 4, characterized in that: During the step of opening the operating port by the opening and closing mechanism, the lifting platform is controlled to descend so that the lifting platform and the battery swapping channel are on the same plane; In the step of the battery swapping trolley traveling from the battery swapping channel to below the operating port, the battery swapping trolley travels along the battery swapping channel to below the operating port and stops on the lifting platform.

6. The chassis battery swapping method for electric vehicles as described in claim 4, characterized in that, The step of closing the operating port to form a complete driving passage via the opening and closing mechanism further includes: Control the lifting platform to rise so that the lifting platform and the vehicle platform form a complete driving passage.

7. The chassis battery swapping method for electric vehicles as described in claim 1, characterized in that, The vehicle platform includes an adjustment unit for adjusting the angle between the vehicle and the driving lane in the horizontal plane. After the vehicle is parked on the vehicle platform, the following steps are also included: The adjustment unit adjusts the vehicle's body angle to meet the battery swapping requirements.

8. The chassis battery swapping method for electric vehicles as described in claim 7, characterized in that, The adjustment unit moves the position of the vehicle's front wheels in a horizontal plane to adjust the vehicle body angle.

9. The chassis battery swapping method for electric vehicles as described in claim 7, characterized in that, The step of adjusting the vehicle body angle by the adjustment unit is performed simultaneously with the step of opening the operation port by the opening and closing mechanism.

10. The chassis battery swapping method for electric vehicles as described in claim 7, characterized in that, The chassis battery swapping method also includes the following steps: Detect whether the battery swapping vehicle and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position; If so, proceed with the step of removing the depleted battery pack assembly from the vehicle; If not, perform the step of adjusting the vehicle body angle, and repeat the steps of detecting whether the battery swapping trolley and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position and adjusting the vehicle body angle until the battery swapping trolley and the depleted battery pack assembly on the vehicle are in the battery swapping unlock position.

11. The chassis battery swapping method for electric vehicles as described in claim 1, characterized in that, The chassis battery swapping method also includes the following steps: The battery swapping vehicle carries the depleted battery pack assembly and leaves from below the operating port, moving it into the cargo compartment.

12. The chassis battery swapping method for electric vehicles as described in claim 1, characterized in that, The battery swapping vehicle includes a first battery swapping vehicle and a second battery swapping vehicle. The first battery swapping vehicle removes the depleted battery pack assembly from the vehicle, and the second battery swapping vehicle installs the fully charged battery pack assembly onto the vehicle's body frame.

13. The chassis battery swapping method for electric vehicles as described in claim 12, characterized in that, The following steps are included before the vehicle docks at the vehicle platform: The second transfer device picks up and places the fully charged battery pack assembly onto the second battery swapping trolley located in the waiting area inside the second warehouse.

14. The chassis battery swapping method for electric vehicles as described in claim 13, characterized in that, The chassis battery swapping method also includes the following steps: The second battery swapping vehicle, carrying a fully charged battery pack, enters the battery swapping channel for use.

15. The chassis battery swapping method for electric vehicles as described in claim 14, characterized in that, The chassis battery swapping method also includes the following steps: The first battery swapping vehicle carrying the depleted battery pack assembly leaves from below the operating port, and the second battery swapping vehicle carrying the fully charged battery pack assembly moves to below the operating port.

16. The chassis battery swapping method for electric vehicles as described in claim 15, characterized in that, The chassis battery swapping method also includes the following steps: The first battery swapping vehicle carries the depleted battery pack assembly to the first cargo compartment.

17. The chassis battery swapping method for electric vehicles as described in claim 16, characterized in that, The chassis battery swapping method also includes the following steps: The first transfer device transfers the depleted battery pack components from the first battery swapping vehicle to the charging area in the first cargo warehouse for charging.

18. The chassis battery swapping method for electric vehicles as described in claim 17, characterized in that, The chassis battery swapping method also includes the following steps: The first battery swapping vehicle is on standby in the first cargo compartment.

19. The chassis battery swapping method for electric vehicles as described in claim 15, characterized in that, Before the opening and closing mechanism closes the operating port, the following steps are also included: The second battery swapping trolley leaves from below the operating port and moves into the second cargo compartment.

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