Battery replacement system and battery replacement method

Abstract

The invention relates to the field of battery replacement of electric vehicles, in particular to a battery replacement system and a battery replacement method. The battery replacing system comprises a bearing assembly and a battery replacing assembly, wherein the bearing assembly comprises a bearing platform used for bearing a battery and a locking and unlocking device used for locking and unlocking the battery; the lifting platform is located below the bearing platform, connected with the bearing platform and used for lifting the bearing platform; a leveling device is arranged at the position of the lifting platform and used for leveling the bottom of the vehicle, and the leveling device can ascend and descend relative to the lifting platform and can ascend and descend along with the lifting platform. According to the battery replacing system and the battery replacing method, the lifting height of the vehicle can be reduced, the vehicle bottom can be kept static and stable in the battery replacing process, and battery replacing is more convenient.

Description

Technical Field

[0001] This invention relates to the field of battery swapping for electric vehicles, and more specifically to a battery swapping system and a battery swapping method. Background Technology

[0002] With the development of new energy vehicles, battery swapping station technology has also made great strides. However, the vehicle leveling module and unlocking module of battery swapping systems on the market operate independently, resulting in low technological integration and high construction costs for battery swapping stations. Moreover, during the battery swapping process, in order to facilitate battery replacement, the entire vehicle often needs to be lifted and leveled, causing vehicle instability and a poor experience for passengers inside the vehicle. Summary of the Invention

[0003] In view of this, the present invention provides a battery swapping system and a battery swapping method, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0004] To achieve the aforementioned objective, a first aspect of the present invention provides a battery swapping system for vehicles, characterized in that the battery swapping system comprises, in sequence: A carrier assembly, comprising a carrier platform for carrying a battery and an unlocking / unlocking device for unlocking / unlocking the battery; and, A lifting platform is located below and connected to the carrying platform, and is used to lift the carrying platform. The lifting platform is equipped with a leveling device for leveling the underside of the vehicle. The leveling device can be raised and lowered relative to the lifting platform, and the leveling device can be raised and lowered along with the lifting platform.

[0005] In the battery swapping system described above, optionally, the carrier component further includes an unlocking platform, which is located between the carrier platform and the lifting platform, and the unlocking device is disposed on the unlocking platform.

[0006] In the battery swapping system described above, optionally, the unlocking platform is a frame structure with a cavity in the middle. The unlocking platform is located relative to the edge of the support platform, and the lifting platform is connected to the support platform from the cavity of the unlocking platform.

[0007] In the battery swapping system described above, optionally, the carrying platform and the lifting platform are floatingly connected by a floating device.

[0008] In the battery swapping system described above, optionally, the floating device is a variable pitch suspension chain, which includes a chain, a mounting block elastically connected to one end of the chain by a spring, and a fixing frame hinged to the other end of the chain. The mounting block is fixed to the lifting platform, and the fixing frame is fixed to the bearing platform.

[0009] In the battery swapping system described above, optionally, the edge of the lifting platform is wider than that of the bearing platform, and the leveling device is located at the wider edge.

[0010] To achieve the aforementioned objective, a second aspect of the present invention provides a battery swapping method, the battery swapping method comprising a battery swapping system as described in any one of the first aspects above, the battery swapping method comprising the following steps: Step A: Extend the leveling device of the battery swapping system to the same plane, keep the leveling device on the same plane and raise it until it contacts the bottom of the vehicle to level the bottom of the vehicle; Step B: Make the support platform of the battery swapping system fit against the battery under the vehicle or make the battery supported by the support platform fit against the battery mounting position under the vehicle; Step C: Use the unlocking / unlocking device of the battery swapping system to unlock or lock the battery.

[0011] In the battery swapping method described above, optionally, In step A: the battery swapping system has four leveling devices, each corresponding to one of the four leveling points on the underside of the vehicle. The four leveling devices extend to the same plane, and the four leveling devices remain on the same plane as the lifting platform continues to rise until all four leveling devices contact the vehicle floor, and the vehicle floor is leveled. The lifting platform continues to rise, and the supporting platform and the leveling device rise with the lifting platform. At the same time, the leveling device descends relative to the lifting platform at the same rate as the lifting platform rises, keeping the vehicle's undercarriage stationary and stable.

[0012] In the battery swapping method described above, optionally, In step B: the support platform continues to rise with the lifting platform until the position of the support platform against the battery under the vehicle or the position of the battery carried by the support platform against the battery mounting position under the vehicle, at which point the lifting platform stops rising and the leveling device stops descending.

[0013] In the battery swapping method described above, optionally, In step C, the unlocking device contacts the battery and unlocks or locks the battery. After the battery is unlocked, the support platform carrying the unlocked battery and the leveling device descends with the lifting platform, while the leveling device rises relative to the lifting platform. The rising rate of the leveling device is the same as the descending rate of the lifting platform, until the support platform descends to the battery transmission position, at which point the lifting platform stops descending and the leveling device stops rising. When the battery is locked, the carrying platform carries the battery swapping device and rises from the battery transfer position to the battery installation position along with the lifting platform.

[0014] The battery swapping system of this invention integrates a leveling device into the lifting platform of the unlocking device, and also sets up a floating device between the carrying platform and the lifting platform. The leveling device, by leveling the vehicle underside, can reduce the vehicle's lifting height, thereby improving the comfort of the occupants. The floating connection between the lifting platform and the carrying platform allows the carrying platform to have floating amounts in the X, Y, and Z directions, enhancing the posture adaptability of the carrying platform 1 and making it more compatible with the tilt angle of the battery under the vehicle. This allows for compatibility with more vehicle models and improves the utilization rate of the battery swapping station.

[0015] The present invention also provides a battery swapping method that has all the features of the aforementioned battery swapping system and thus has its corresponding advantages. Furthermore, the battery swapping method can keep the vehicle underside stationary and stable during the battery swapping process and makes battery swapping more convenient. Attached Figure Description

[0016] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. [The drawings are shown in the figures.]

[0017] Figure 1 This is a perspective view of an embodiment of the battery swapping system of the present invention.

[0018] Figure 2 for Figure 1 A three-dimensional schematic diagram of the support platform of an embodiment of the battery swapping system.

[0019] Figure 3 for Figure 1 A partial schematic diagram of an embodiment of a battery swapping system, showing the unlocking platform.

[0020] Figure 4 for Figure 1 A partial schematic diagram of one embodiment of the battery swapping system shows a lifting platform.

[0021] Figure 5 for Figure 1 A three-dimensional schematic diagram of a leveling device in one embodiment of a battery swapping system.

[0022] Figure 6 for Figure 1 A perspective view of a floating device in one embodiment of a battery swapping system.

[0023] Figure 7 for Figure 1 A perspective view of the base of an embodiment of the battery swapping system.

[0024] Figure 8 This is a flowchart illustrating the battery unlocking process of the battery swapping method in the battery swapping system of the present invention.

[0025] Figure 9 This is a flowchart illustrating the battery locking process of the battery swapping method in the battery swapping system of the present invention.

[0026] Reference numerals: 1-Bearing platform; 11-Battery lifting block; 12-Positioning pin through hole; 13-Unlocking through hole; 14-Baffle; 15-Limiting post; 16-Elastic connector; 2-Unlocking platform; 21-Positioning pin; 22-Unlocking sleeve; 23-Limiting hole; 24-Lock mounting hole; 25-Positioning mounting hole; 26-Cavity; 3-Lifting platform; 31-First side; 32-Second side; 33-Slot; 4-Leveling device; 41-Mounting bracket; 42-Opening; 43-Cylinder; 44-Telescopic rod; 45-Motor; 46-Mounting plate; 47-Mounting seat; 5-Floating device; 51-Mounting block; 52-Fixing bracket; 53-Chain; 54-Spring; 6-Base; 61-Generator; 62-Reducer; 63-Lifting device. Detailed Implementation

[0027] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the battery swapping system and method of the present invention will be described below by way of example. However, all descriptions should not be construed as limiting the present invention in any way.

[0028] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, the present invention still allows for any combination or deletion of these technical features (or their equivalents) without any technical obstacle, and thus these further embodiments according to the present invention should also be considered within the scope of this description.

[0029] It should also be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship of the battery swapping system and its components shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0031] In the description of this disclosure, "multiple" means at least two, such as two, three or more, unless otherwise expressly and specifically limited.

[0032] It should be noted that in this invention, the X direction refers to the length direction of the vehicle, the Y direction refers to the width direction of the vehicle, and the Z direction refers to the height direction of the vehicle.

[0033] from Figure 1 As can be seen, the battery swapping system of the present invention includes a support component, a lifting platform 3 and a leveling device 4. The support component includes a support platform 1 connected to the lifting platform 3 and an unlocking device for unlocking the battery.

[0034] The support platform 1 is used to support the battery, and the battery unlocking and unlocking device can be installed on the support platform 1.

[0035] Optionally, such as Figure 1 As shown, the battery swapping system may also include an unlocking platform 2, which is located between the support platform 1 and the lifting platform 3.

[0036] Specifically, such as Figure 2 As shown, the bearing surface of the bearing platform 1 is provided with a battery support block 11, a positioning pin through hole 12, and an unlocking through hole 13. The side of the bearing platform 1 near the unlocking platform 2 is provided with baffles 14 on both sides of the bearing platform 1 in the X direction, and limiting posts 15 at the four corners of the bearing platform 1. Furthermore, the baffles 14 and the limiting posts 15 all extend toward the unlocking platform 2.

[0037] Combination Figure 3 As can be seen, the support platform 1 and the unlocking platform 2 are connected by an elastic connector 16. The distance between the unlocking platform 2 and the support platform 1 can be controlled by the extension and retraction of the elastic connector 16, thereby controlling whether the unlocking device passes through the support platform 1. It should be noted that the aforementioned unlocking device includes an unlocking sleeve 22 and a positioning pin 21. It should also be noted that the battery under the vehicle can be installed to the battery mounting position under the vehicle using detachable fixing components such as, but not limited to, bolts, or Allen wrenches. Therefore, the unlocking sleeve 22 can be correspondingly configured as, for example, but not limited to, a screwdriver, or an Allen wrench, to install or remove the battery.

[0038] Specifically, as can be seen from the figure, the battery swapping system of the present invention is symmetrical about the Y-axis. Figure 3The connectors and unlocking components of the front half of the unlocking / unlocking platform 2 are retained. The following comparison of the front and rear parts of the unlocking / unlocking platform 2 illustrates the structure of the unlocking / unlocking platform 2 and its connection with the carrier platform 1.

[0039] In the illustrated example, the unlocking platform 2 is a frame structure with a cavity 26 in the middle. The unlocking platform 2 is located relative to the edge of the supporting platform 1 (as shown in the figure). Figure 1 (As shown).

[0040] The unlocking platform 2 is provided with limiting holes 23 located near the four corner edges, lock mounting holes 24 located on both sides in the X direction, and positioning mounting holes 25.

[0041] Specifically, the limiting hole 23 is positioned relative to the limiting post 15, and the limiting post 15 can pass through the limiting hole 23 to limit the locking / unlocking platform 2. The lock mounting hole 24 is positioned relative to the locking / unlocking through hole 13 of the support platform 1, and the locking / unlocking sleeve 22 is installed in the lock mounting hole 24, and the locking / unlocking sleeve 22 can pass through the locking / unlocking through hole 13 of the support platform 1. The positioning mounting hole 25 is positioned relative to the positioning pin through hole 12 of the support platform 1, and the positioning pin 21 is installed in the positioning mounting hole 25, and the positioning pin 21 can pass through the positioning pin through hole 12 of the support platform 1.

[0042] from Figure 3 It can be clearly seen that the baffle 14 is located on both sides of the unlocking platform 2 in the X direction. The end of the baffle 14 is fixed to the support platform 1, and the panel of the baffle 14 extends to the edges of the unlocking platform 2 in the X direction, limiting the unlocking platform 2 from both sides of the unlocking platform 2 in the X direction.

[0043] During battery swapping, the locking / unlocking sleeve 22 can be extended through the carrier platform 1 by the relative movement of the locking / unlocking platform 2 and the carrier platform 1 to lock or unlock the battery. The locking / unlocking platform 2 and the carrier platform 1 are set separately. After locking or unlocking the battery, the locking / unlocking platform 2 can be moved downwards relative to the carrier platform 1, causing its locking / unlocking device to detach from the battery, leaving only the carrier platform 1 to support the battery. This facilitates the removal of the battery from the carrier platform 1 for replacement.

[0044] Combination Figure 1 , Figure 3 as well as Figure 4 It can be seen that the lifting platform 3 can be connected to the bearing platform 1 from the cavity 26 in the middle of the unlocking platform 2.

[0045] Specifically, such as Figure 4 As shown, the lifting platform 3 is equipped with a leveling device 4 and a floating device 5. Specifically, the edges of the lifting platform 3 in the X direction are wider than those of the supporting platform 1 (e.g., Figure 1As shown in the figure, the leveling device 4 is provided at the wider edge, so that the leveling device 4 can extend out of the bearing platform 1 from both sides of the bearing platform 1. It should be noted here that the installation position of the leveling device 4 corresponds to the leveling points on the bottom of the vehicle to be leveled.

[0046] In the illustrated embodiment, four leveling devices 4 can be installed, corresponding to four leveling points near the tires between the tires on the bottom of the vehicle. In other embodiments, the number and installation position of the leveling devices 4 are not limited and can be set according to requirements.

[0047] Taking the side of the lifting platform 3 facing the bearing platform 1 as the first side 31 and the side of the lifting platform 3 away from the bearing platform 1 as the second side 32. Combining Figure 5 It can be seen that the leveling device 4 includes an electric cylinder and a mounting plate 46 for mounting the electric cylinder on the lifting platform 3.

[0048] Furthermore, as shown in the figure, the leveling device 4 further has a mounting frame 41. The mounting frame 41 is in a "C" - shaped structure. One end of the "C" - shaped structure near the bearing platform 1 has an opening 42, and the other end of the "C" - shaped structure is fixedly mounted on the first side 31 of the lifting platform 3.

[0049] The electric cylinder has a cylinder body 43, a telescopic rod 44, a motor 45, and a mounting seat 47 for mounting the cylinder body 43 and the motor 45. The telescopic rod 44 passes through the lifting platform 3 and is provided on the first side 31 of the lifting platform 3. The telescopic rod 44 is arranged inside the "C" - shaped structure, and the telescopic rod 44 can extend out of the opening 42 of the mounting frame 41. The mounting frame 41 can prevent the telescopic rod 44 from shaking in the X - direction and Y - direction when it extends, and at the same time plays a protective role for the telescopic rod 44. The cylinder body 43 of the electric cylinder is mounted on the second side 32 of the lifting platform 3 through the mounting plate 46. The motor 45 can control the telescopic rod 44 of the electric cylinder to rise or fall along the Z - direction from the opening 42.

[0050] In other embodiments, the leveling device 4 can also be other telescopic components, such as but not limited to a worm and worm gear device, a scissor - type telescopic device, etc., as long as it can extend beyond the bearing platform 1 and level the bottom of the vehicle.

[0051] From Figure 4 It can also be seen that the lifting platform 3 has a notch 33. The notch 33 extends along the Y - direction towards the inside of the lifting platform 3. Combining Figure 3 It can be seen that the notch 33 extends to a position relative to the central cavity 26 of the unlocking and locking platform 2. The notch 33 is used to install a floating device 5, and the floating device 5 is used to connect the bearing platform 1.

[0052] In the illustrated example, the floating device 5 is a variable - pitch suspension chain, and the variable - pitch suspension chain is used to floatingly connect the lifting platform 3 and the bearing platform 1. Specifically, as Figure 6As shown, the variable-pitch suspension chain includes a chain 53, a mounting block 51 elastically connected to one end of the chain 53 by a spring 54, and a fixing frame 52 hinged to the other end of the chain 53. Figure 1 As shown, the mounting block 51 is fixed to the lifting platform 3, and the fixing frame 52 is fixed to the bearing platform 1. That is, the two ends of the fixing frame 52 are connected to the chain 53 and the bearing platform 1 respectively.

[0053] The fixed frame 52 can float relative to the mounting block 51 in the X, Y, and Z directions via a chain 53. The length of the chain 53 limits the amount of floating of the fixed frame 52 in the X and Y directions. When floating in the Z direction, the fixed frame 52 pulls the chain 53 in the Z direction, and the chain 53 pulls the compression spring 54, causing the spring 54 to deform, thereby controlling the amount of floating in the Z direction. In this way, the supporting platform 1 can float in the X, Y, and Z directions via the fixed frame 52 of the variable-pitch suspension chain.

[0054] In other embodiments, the floating device 5 may also take other forms, such as, but not limited to, a spring-loaded floating connection.

[0055] from Figure 7 It can be seen that the base 6 is equipped with a lifting device 63 connected to the lifting platform 3, as well as a generator 61 and a reducer 62 for controlling the lifting device 63 to rise and fall.

[0056] exist Figure 7 In this embodiment, the lifting device 63 is a scissor-type telescopic device. One end of the scissor-type telescopic device is connected to the base 6, and the other end is connected to the lifting platform 3, thereby controlling the lifting and lowering of the lifting platform 3 through the extension and retraction of the scissor-type telescopic device. As shown in the figure, three scissor-type telescopic devices are respectively located at one end and both sides of the base 6, thereby more stably supporting the lifting platform 3 during lifting and lowering.

[0057] The battery swapping system of the present invention, such as Figure 1 As shown, from top to bottom, there are a support platform 1, an unlocking platform 2, a lifting platform 3, and a base 6.

[0058] Specifically, the base 6 is connected to the lifting platform 3 via a lifting device 63, which controls the raising and lowering of the lifting platform 3. The lifting platform 3 passes through the cavity 26 (e.g., through the unlocking platform 2) Figure 3 The floating device 5 (shown) is connected to the support platform 1, that is, the support platform 1 can rise and fall with the lifting platform 3, and the support platform 1 has a floating amount in each direction.

[0059] from Figure 1 It can also be seen that the leveling device 4 is located on the edge of the lifting platform 3, and the edge is wider in the X direction than the bearing platform 1. That is, the leveling device 4 can extend outward from the outer side of the two sides of the bearing platform 1 relative to the outer side of the two sides of the bearing platform 1.

[0060] The unlocking / unlocking platform 2 is connected to the carrier platform 1 via the elastic connector 16. That is, the unlocking / unlocking platform 2 can extend and retract the elastic connector 16 to allow the unlocking / unlocking device on it to pass through the carrier platform 1 and contact the battery located on the carrier platform 1, thereby unlocking / unlocking the battery.

[0061] It can be seen that the battery swapping system of the present invention integrates the leveling device 4 into the lifting platform 3 of the unlocking device, which has a high degree of integration, thereby making the structure of the battery swapping system more compact and reducing the construction cost of the battery swapping station.

[0062] During leveling, the leveling device 4 lifts the vehicle from under the vehicle, allowing the vehicle to be leveled even when the vehicle is at a low height and the tires are not off the ground, thus improving the comfort of the people inside the vehicle.

[0063] It should be noted that after leveling the vehicle underside, the battery mounting position may still have a slight tilt angle. This invention also incorporates a floating device 5 between the support platform 1 and the lifting platform 3, allowing the support platform 1 to have slight floating amounts in the X, Y, and Z directions. These slight floating amounts are less than 50 mm, allowing it to better conform to the slight tilt angle of the battery under the vehicle. Compared to significant adjustments to the vehicle underside, this adjustment is almost imperceptible to occupants inside the vehicle. Therefore, the floating device 5 can adjust the posture of the support platform 1, enhancing its adaptability and enabling compatibility with more vehicle models, thereby improving the utilization rate of the battery swapping station.

[0064] The present invention also provides a battery swapping method, comprising the following steps: Step A: Extend the leveling device 4 of the battery swapping system to the same plane, keep the leveling device 4 on the same plane and raise it until it contacts the bottom of the vehicle to level the bottom of the vehicle; Step B: Make the battery swapping system's support platform 1 fit against the battery under the vehicle or make the battery supported by the support platform 1 fit against the battery mounting position under the vehicle. Step C: Use the battery swapping system's unlocking / unlocking device to unlock or lock the battery.

[0065] Specifically, Figure 8 and Figure 9 The battery swapping methods are divided into battery unlocking methods and battery locking methods.

[0066] like Figure 8 As shown, the battery unlocking method includes the following steps: In step A: the four leveling devices 4 of the battery swapping system rise along the Z direction to the same plane. At this time, the leveling devices 4 do not contact the bottom of the vehicle. Then, the leveling devices 4 remain on the same plane and rise along the Z direction with the lifting platform 3 until they contact the bottom of the vehicle. When all four leveling devices 4 contact the bottom of the vehicle, it means that the bottom of the vehicle is on the same plane and the bottom of the vehicle has been leveled.

[0067] During this process, based on the posture of the vehicle bottom, the four leveling devices 4 may apply different supporting forces to the vehicle bottom. Some leveling devices 4 may contact the corresponding vehicle bottom part first, causing the corresponding vehicle bottom part to tend to lift off the ground, thus slightly adjusting the vehicle body. Finally, all four leveling devices 4 will contact the vehicle bottom, leveling the vehicle bottom.

[0068] It should be noted that the four leveling devices 4 must be on the same plane for the vehicle undercarriage to be leveled. That is, the four leveling devices 4 must reach the same height, and their top surfaces must be on the same horizontal plane, in order to level the vehicle undercarriage. The height to which the four leveling devices 4 rise can be adjusted according to the undercarriage conditions of different types of vehicles, so that the undercarriage can be leveled without lifting the vehicle, facilitating subsequent battery swapping procedures.

[0069] After the vehicle undercarriage is leveled, the lifting platform 3 continues to rise along the Z direction. Since the load-bearing platform 1 and the leveling device 4 are both connected to the lifting platform 3, the load-bearing platform 1 and the leveling device 4 rise with the lifting platform 3. In order to prevent the vehicle from being lifted, the leveling device 4 is lowered relative to the lifting platform 3. The rate at which the leveling device 4 descends is the same as the rate at which the lifting platform 3 rises, so that the vehicle undercarriage remains stationary and stable.

[0070] During this process, the top surface of the leveling device 4 is always in contact with the bottom of the vehicle. Since the rate at which the leveling device 4 descends is the same as the rate at which it rises with the lifting platform 3, the top surface of the leveling device 4 is always kept at the leveling height of the bottom of the vehicle, and the bottom of the vehicle is always kept in the leveling state and leveling position, thus keeping the bottom of the vehicle stationary and stable.

[0071] In step B: The support platform 1 continues to rise with the lifting platform 3 until the battery support block 11 of the support platform 1 is in contact with the battery under the vehicle. The lifting platform 3 then stops rising, and the leveling device 4 stops descending. At this time, both the support platform 1 and the leveling device 4 are in contact with the vehicle floor, and the vehicle floor remains in a leveled state and position.

[0072] In step C: the unlocking platform 2 rises along the Z direction, and the positioning pin 21 passes through the positioning pin through hole 12 of the carrier platform 1 and extends into the corresponding positioning hole of the battery under the vehicle to position the battery, so that the unlocking sleeve 22 passes through the unlocking through hole 13 of the carrier platform 1 and is aligned with the battery loading and unloading components.

[0073] Use the unlocking sleeve 22 to unlock the battery.

[0074] After unlocking, the support platform 1, carrying the unlocked battery and the leveling device 4, descends along with the lifting platform 3. Simultaneously, the leveling device 4 rises relative to the lifting platform 3 at the same rate as the lifting platform 3 descends, until the support platform 1 reaches the battery transfer position. At this point, the lifting platform 3 stops rising, and the leveling device 4 stops descending. During the descent of the lifting platform 3, because the rate at which the leveling device 4 rises relative to the lifting platform 3 is the same as the rate at which it descends with the lifting platform 3, the vehicle undercarriage remains stationary and stable.

[0075] The battery at the battery transfer position is transferred to the carrier platform 1 for battery installation and locking.

[0076] like Figure 9 As shown, the steps of the battery locking method are basically the same as those of the battery unlocking method. The difference is that in step A, the battery swapping system's support platform 1 carries the battery swapping device 4 and rises with the lifting platform 3. At the same time, the leveling device 4 descends relative to the lifting platform 3. The rate at which the leveling device 4 descends is the same as the rate at which the lifting platform 3 rises, thereby keeping the vehicle underside stationary and stable.

[0077] In step B: the battery swapping device carried by the support platform 1 rises with the lifting platform 3 to the battery mounting position that fits against the bottom of the vehicle, the lifting platform 3 stops rising, and at the same time the leveling device 4 stops descending.

[0078] In step C: the unlocking platform 2 rises along the Z direction, and the positioning pin 21 passes through the positioning pin through hole 12 of the carrier platform 1 and extends into the corresponding positioning hole of the battery on the carrier platform 1 to position the battery, so that the unlocking sleeve 22 passes through the unlocking through hole 13 of the carrier platform 1 and is aligned with the battery loading and unloading parts.

[0079] Lock the battery and install it under the vehicle.

[0080] The carrying platform 1 and the leveling device 4 descend to the battery transfer position along with the lifting platform 3, and the battery swap is completed.

[0081] The battery swapping method of the present invention can keep the vehicle underside stationary and stable during the battery swapping process, making battery swapping more convenient.

[0082] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A battery replacement system for a vehicle, characterized in that: The power exchange system comprises: A carrying assembly, the carrying assembly comprising a carrying platform (1) for carrying a battery and a locking and unlocking device for locking and unlocking the battery; and, A lifting platform (3), the lifting platform (3) being located below the carrying platform (1) and connected to the carrying platform (1), and being used for lifting the carrying platform (1); The lifting platform (3) is provided with a leveling device (4), and the leveling device (4) can be raised and lowered relative to the lifting platform (3), and the leveling device (4) can be raised and lowered along with the lifting platform (3), so as to level the bottom of the vehicle and cooperate with the bearing assembly to realize battery replacement.

2. The battery replacement system according to claim 1, characterized in that: The bearing assembly further comprises a locking and unlocking platform (2), wherein the locking and unlocking platform (2) is located between the bearing platform (1) and the lifting platform (3), and the locking and unlocking device is arranged on the locking and unlocking platform (2).

3. The battery replacement system according to claim 2, characterized in that: The middle part of the locking and unlocking platform (2) is a cavity (26), the locking and unlocking platform (2) is relatively located at the edge of the carrying platform (1), and the lifting platform (3) is connected to the carrying platform (1) through the cavity (26) of the locking and unlocking platform (2).

4. The battery replacement system according to claim 1, characterized in that: The bearing platform (1) and the lifting platform (3) are floatingly connected via a floating device (5).

5. The battery replacement system according to claim 4, characterized in that: The floating device (5) is a variable-pitch suspension chain, comprising a chain (53), a mounting block (51) elastically connected to one end of the chain (53), and a fixing frame (52) hinged to the other end of the chain (53), wherein the mounting block (51) is fixed to the lifting platform (3), and the fixing frame (52) is fixed to the bearing platform (1).

6. The battery replacement system according to claim 1, characterized in that: The edge of the lifting platform (3) is wider than that of the carrying platform (1), and the leveling device (4) is arranged on the wider edge.

7. A battery replacement method, characterized in that: The battery replacement method adopts the battery replacement system according to any one of claims 1 to 6, and the battery replacement method comprises the following steps: Step A: extending the leveling device (4) of the battery exchange system to the same plane, so that the leveling device (4) remains on the same plane and rises until it contacts the bottom of the vehicle, thereby leveling the bottom of the vehicle; Step B: making the carrying platform (1) of the battery replacement system fit the battery on the bottom of the vehicle or making the battery carried by the carrying platform (1) fit the battery installation position on the bottom of the vehicle; Step C: Unlock or lock the battery using the locking and unlocking device of the battery replacement system.

8. The battery replacement method according to claim 7, characterized in that: In step A: the battery replacement system has four leveling devices (4), and the four leveling devices (4) correspond to four leveling points on the bottom of the vehicle respectively. The four leveling devices (4) extend to the same plane, and the four leveling devices (4) remain in the same plane and rise with the lifting platform (3) until all the four leveling devices (4) contact the bottom of the vehicle, and the bottom of the vehicle is leveled; The lifting platform (3) continues to rise, driving the supporting platform (1) and the leveling device (4) to rise. At the same time, the leveling device (4) descends relative to the lifting platform (3). The descending rate of the leveling device (4) is the same as the ascending rate of the lifting platform (3), thereby keeping the bottom of the vehicle still and stable.

9. The battery replacement method according to claim 8, characterized in that: In step B: the carrying platform (1) continues to rise with the lifting platform (3) until the carrying platform (1) fits the battery on the bottom of the vehicle or the battery carried by the carrying platform (1) fits the battery installation position on the bottom of the vehicle, and the lifting platform (3) stops rising, and the leveling device (4) stops descending at the same time.

10. The battery replacement method according to claim 9, characterized in that: In the step C, the locking and unlocking device contacts the battery and unlocks or locks the battery; After unlocking the battery, the carrying platform (1) carrying the unlocked battery and the leveling device (4) descends along with the lifting platform (3), and at the same time the leveling device (4) rises relative to the lifting platform (3), and the rising rate of the leveling device (4) is the same as the descending rate of the lifting platform (3), until the carrying platform (1) descends to the battery transfer position, the lifting platform (3) stops descending, and at the same time the leveling device (4) stops rising; When the battery is locked, the carrying platform (1) carries the replacement battery and rises from the battery transfer position to the battery installation position along with the lifting platform (3).

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