Unlocking assembly and battery replacement device

Abstract

The application discloses an unlocking assembly and a battery replacing device. The unlocking assembly comprises an unlocking rod, an unlocking cylinder and a fixing plate. The unlocking rod comprises a lifting part and a guide part which are connected in sequence along the length direction of the unlocking rod. The first end of the unlocking cylinder is provided with a first opening, and the guide part extends into the unlocking cylinder from the first opening. The second end of the unlocking cylinder is installed on the fixing plate. In a non-unlocking state, the ratio between the sum of the length of the lifting part, the length of the guide part and the length of the unlocking cylinder and the length of the unlocking rod exposed to the unlocking cylinder is greater than 1 and less than 5. The total length between the length of the unlocking cylinder and the length of the unlocking rod exposed to the unlocking cylinder remains unchanged. By setting the ratio between the lengths, the compression stroke of the unlocking rod in the unlocking cylinder can be increased, the wear of the top part of the unlocking rod can be reduced, the service life of the unlocking rod can be increased, the fault tolerance of the unlocking rod can be improved, the error redundancy of battery replacement can be improved, and the success rate of battery replacement unlocking can be improved.

Description

Technical Field

[0001] This invention relates to an unlocking component and a battery swapping device. Background Technology

[0002] Currently, electric vehicle battery installation methods are generally divided into fixed and swappable types. Fixed batteries are typically fixed to the vehicle, and the vehicle is used as the charging device during charging. Swappable batteries, on the other hand, are usually installed in a movable manner, allowing them to be removed at any time for replacement or charging, and then reinstalled on the vehicle body after replacement or charging.

[0003] Once the battery is installed in an electric vehicle, it is usually locked in place by a locking mechanism to prevent it from falling off. Each time the battery is replaced, the locking mechanism needs to be unlocked using an unlocking component.

[0004] The unlocking assembly includes an unlocking rod, an unlocking cylinder, and a fixing plate. The unlocking rod extends and retracts vertically within the unlocking cylinder. The unlocking cylinder includes a fixed end connected to the fixing plate and a free end away from the fixing plate. In existing unlocking assemblies, the compression stroke of the unlocking rod within the unlocking cylinder is limited during unlocking, preventing the rod from fully compressing. This results in a lack of cushioning during unlocking, causing the unlocking rod to harden against the locking mechanism. Consequently, the top of the unlocking rod wears faster, and the unlocking assembly has low fault tolerance, leading to a low success rate for unlocking after battery swapping. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, such as the limited compression stroke of the unlocking rod in the unlocking cylinder and the low fault tolerance, which leads to accelerated wear at the top of the unlocking rod and a low success rate of battery swapping unlocking, and to provide an unlocking component and a battery swapping device.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] An unlocking assembly includes: an unlocking rod, an unlocking cylinder, and a fixing plate; the unlocking rod includes a lifting portion and a guide portion connected sequentially along its length; a first end of the unlocking cylinder has a first opening, and the guide portion extends into the unlocking cylinder through the first opening; a second end of the unlocking cylinder is mounted on the fixing plate.

[0008] In the unlocked state, the ratio between the sum of the lengths of the lifting portion, the guide portion, and the unlocking cylinder and the length of the unlocking rod protruding from the unlocking cylinder is greater than 1 and less than 5.

[0009] In this solution, compared to existing technologies, the total length between the length of the unlocking cylinder and the length of the unlocking rod protruding from the unlocking cylinder remains unchanged. By setting the ratio range between the sum of the length of the lifting part, the guide part, and the unlocking cylinder and the length of the unlocking rod protruding from the unlocking cylinder, the compression stroke of the unlocking rod within the unlocking cylinder can be increased. This increases the redundancy range between the maximum compression stroke of the unlocking rod within the unlocking cylinder and the actual compression stroke required by the unlocking rod during the unlocking process. This prevents the unlocking rod from being unbuffered and hard-locked during unlocking, reduces wear on the top of the unlocking rod, and increases the service life of the unlocking rod. Furthermore, it improves the fault tolerance of the unlocking rod, increases the redundancy of battery swapping errors, and thus improves the success rate of battery swapping unlocking. Moreover, it maximizes redundancy while maintaining good economic efficiency.

[0010] Preferably, the outer wall of the first end of the unlocking cylinder is provided with an unlocking cylinder avoidance surface, which is used to avoid the battery pack and / or electric vehicle.

[0011] In this solution, since the size of the battery pack is variable and the position of the battery pack may also be inaccurate, setting the clearance surface of the unlocking cylinder can increase the redundancy range between the unlocking cylinder and the battery pack and / or the unlocking cylinder and the electric vehicle, avoiding collisions between the first end of the unlocking cylinder and the battery pack or the body bracket on the electric vehicle, and avoiding damage to the battery pack and unlocking components.

[0012] Preferably, the unlocking assembly further includes an elastic component disposed within the unlocking cylinder, and the guide portion of the unlocking rod abuts against the elastic component.

[0013] In this design, an elastic component is incorporated within the unlocking cylinder to provide elastic support for the unlocking assembly, facilitating the movement of the unlocking rod along its axis and thus improving the efficiency of the unlocking assembly during unlocking. Furthermore, the elastic component's placement within the unlocking cylinder results in a simple and compact structure, enhancing space utilization.

[0014] Preferably, the second end of the unlocking cylinder has a second opening, the fixing plate has a through hole communicating with the second opening, and the elastic member can pass through the second opening and extend into the through hole;

[0015] And / or, the elastic component is a rectangular spring.

[0016] In this design, the elastic component can pass through the second opening of the unlocking cylinder and extend into the through hole of the fixing plate. This structure increases the length of the elastic component, thereby increasing its compression stroke and making the unlocking rod more tolerant, which can further improve the success rate of battery swapping unlocking.

[0017] Compared to traditional linear springs, rectangular springs have a larger cross-section, increasing the contact area between the elastic component and the second end of the extension. This reduces the force exerted by the unlocking lever on the rectangular spring, improving its stability and the maximum elastic support force that the unlocking assembly can provide during unlocking. This allows the unlocking assembly to unlock battery packs from different manufacturers. Furthermore, rectangular springs have a larger pitch; for the same length, they have fewer coils than linear springs. Therefore, during the movement of the unlocking lever along its axis, rectangular springs experience greater compression, higher fault tolerance, and greater stiffness and longer service life.

[0018] Preferably, the first end of the lifting portion is a free end, and the second end of the lifting portion is connected to the first end of the guide portion;

[0019] The second end of the guide extends from the first end of the unlocking cylinder into the unlocking cylinder.

[0020] In this solution, the locking mechanism is unlocked by the lifting part acting on it; the unlocking rod and the unlocking cylinder are stably connected by the guide part to prevent the unlocking rod from detaching from the unlocking cylinder during the unlocking process.

[0021] Preferably, the outer wall shape of the guide portion matches the inner wall shape of the unlocking cylinder;

[0022] And / or, the radial dimension of the jacking portion is less than or equal to the radial dimension of the guide portion.

[0023] In this solution, the shape of the unlocking rod guide is matched with that of the unlocking cylinder, which makes the fit between the unlocking rod and the unlocking cylinder more perfect, preventing the unlocking rod from shaking in the unlocking cylinder, thereby improving the overall stability of the unlocking component.

[0024] Preferably, the unlocking rod further includes a fixing part, which is disposed at the second end of the guide part, and the radial dimension of the fixing part is smaller than the radial dimension of the guide part;

[0025] The fixing part is embedded in the first end of the elastic member, and the second end of the guide part abuts against the first end of the elastic member.

[0026] In this design, the fixing part is embedded in the first end of the elastic component, and the second end of the guide part abuts against the first end of the elastic component. This reduces the contact area between the unlocking rod and the unlocking cylinder, thereby reducing the resistance to the compression movement of the unlocking rod within the unlocking cylinder and increasing the compression stroke of the unlocking rod within the unlocking cylinder. Furthermore, it can further improve the connection stability between the unlocking cylinder and the unlocking rod, while preventing the unlocking rod from detaching from the support of the elastic component, thus preventing the unlocking rod from being unaffected by the elastic force of the elastic component.

[0027] Preferably, the lifting portion is provided with an inclined guide surface and / or a top clearance surface.

[0028] The inclined guide surface and / or the top clearance surface are spaced circumferentially along the unlocking rod.

[0029] In this design, the purpose of setting the inclined guide surface is to match the shape of the corresponding position on the locking mechanism when the unlocking component contacts the locking mechanism at the bottom of the electric vehicle, thus guiding the unlocking rod. The purpose of setting the top clearance surface is to prevent the end of the unlocking rod from colliding with the battery pack and the vehicle body frame, thus avoiding damage to the battery pack and the unlocking component, since the size of the battery pack is variable and its position may also have errors.

[0030] Preferably, the unlocking cylinder is provided with a guide hole, which extends along the axial direction of the unlocking cylinder;

[0031] The unlocking rod is provided with a limiting member, which extends into the guide hole and can slide along the extension direction of the guide hole;

[0032] And / or, the second end of the unlocking cylinder is provided with a through hole, which is used to clean the residue inside the unlocking cylinder.

[0033] In this design, the cooperation between the guide hole and the limiting component restricts the movement range of the unlocking rod within the unlocking cylinder, preventing the unlocking rod from detaching from the cylinder and improving the stability of the connection between the unlocking rod and the unlocking cylinder. The purpose of the columnar hole is to promptly clean any excess residue generated by the unlocking rod within the unlocking cylinder during the unlocking process, preventing this residue from interfering with the normal operation of the elastic component and ensuring that the elastic component is always in optimal condition during operation. This also improves the flexibility of the elastic component in the unlocking assembly during operation.

[0034] A battery swapping device, comprising an unlocking component as described in any of the above.

[0035] In this solution, the unlocking assembly including the above-mentioned structure can increase the compression stroke of the unlocking rod within the unlocking cylinder by setting the ratio range between the sum of the lengths of the lifting part, the guide part, and the unlocking cylinder and the length of the unlocking rod protruding from the unlocking cylinder. This increases the redundancy range between the maximum compression stroke of the unlocking rod within the unlocking cylinder and the actual compression stroke required by the unlocking rod during the unlocking process. This can prevent the unlocking rod from being unbuffered and hard-locked during unlocking, reduce wear on the top of the unlocking rod, and increase the service life of the unlocking rod. Furthermore, it can improve the fault tolerance of the unlocking rod, increase the redundancy of battery swapping errors, and thus improve the success rate of battery swapping unlocking. Moreover, it maximizes redundancy while maintaining good economic efficiency.

[0036] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0037] The positive and progressive effects of this invention are as follows: the ratio between the sum of the lengths of the lifting part, the guide part, and the unlocking cylinder, and the length of the unlocking rod protruding from the unlocking cylinder, in this unlocking component and battery swapping equipment, is greater than 1 and less than 5. Compared with the prior art, this solution keeps the total length between the length of the unlocking cylinder and the length of the unlocking rod protruding from the unlocking cylinder constant. By setting the range of the ratio between the sum of the lengths of the lifting part, the guide part, and the unlocking cylinder, and the length of the unlocking rod protruding from the unlocking cylinder, the compression stroke of the unlocking rod within the unlocking cylinder can be increased. This increases the redundancy range between the maximum compression stroke of the unlocking rod within the unlocking cylinder and the actual compression stroke required by the unlocking rod during the unlocking process. This prevents the unlocking rod from being unbuffered and hard-locked during unlocking, reduces wear on the top of the unlocking rod, and increases the service life of the unlocking rod. Furthermore, it improves the fault tolerance rate of the unlocking rod, increases the redundancy of battery swapping errors, and thus improves the success rate of battery swapping unlocking. Moreover, it maximizes redundancy while maintaining good economic efficiency. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the locking mechanism according to Embodiment 1 of the present invention.

[0039] Figure 2 This is a schematic diagram of the overall structure of the unlocking component in the non-unlocked state according to Embodiment 1 of the present invention.

[0040] Figure 3 This is a schematic diagram of the unlocking component of Embodiment 1 of the present invention in the unlocked state from another perspective.

[0041] Figure 4 This is a side view of the unlocking component of Embodiment 1 of the present invention in the unlocked state.

[0042] Figure 5 for Figure 4 A cross-sectional view along the AA direction.

[0043] Figure 6 This is a schematic diagram of the overall structure of the unlocking component in the unlocked state according to Embodiment 1 of the present invention.

[0044] Figure 7 This is a side view of the unlocking component in the unlocked state according to Embodiment 1 of the present invention.

[0045] Figure 8 for Figure 7 Cross-sectional view along the BB direction.

[0046] Figure 9 This is a schematic diagram of the unlocking rod according to Embodiment 1 of the present invention.

[0047] Figure 10 This is a schematic diagram of the unlocking cylinder according to Embodiment 1 of the present invention.

[0048] Figure 11 This is a schematic diagram of the unlocking cylinder from another perspective of Embodiment 1 of the present invention.

[0049] Figure 12 This is a schematic diagram of the structure of the elastic component according to Embodiment 1 of the present invention.

[0050] Figure 13 This is a schematic diagram of the structure of the fixing plate in Embodiment 1 of the present invention.

[0051] Figure 14 This is a schematic diagram of a portion of the structure of the battery swapping equipment according to Embodiment 2 of the present invention.

[0052] Explanation of reference numerals in the attached figures:

[0053] Unlock Component 100

[0054] Unlock lever 200

[0055] Top section 21

[0056] The first end 211 of the lifting part

[0057] The second end 212 of the jacking part

[0058] Inclined guide surface 213

[0059] Top clearance surface 214

[0060] Guiding section 22

[0061] The first end 221 of the guide section

[0062] The second end 222 of the guide section

[0063] Fixing part 23

[0064] Unlock cylinder 300

[0065] Unlocking the first end 31

[0066] First opening 311

[0067] Unlock the second end 32

[0068] Second opening 321

[0069] Unlock cylinder avoidance surface 33

[0070] Elastic component 34

[0071] The first end 341 of the elastic component

[0072] The second end 342 of the elastic component

[0073] Guide hole 35

[0074] First guide hole 351

[0075] Second guide hole 352

[0076] Limiting component 36

[0077] Limiting hole 361

[0078] Through hole 37

[0079] Anti-slip part 38

[0080] Anti-wear parts 39

[0081] Fixed plate 400

[0082] Through hole 41

[0083] Locking mechanism 500

[0084] Locking rod 51

[0085] Unlock Block 52

[0086] Groove 521

[0087] 600 battery swapping devices

[0088] Base 61

[0089] Guide rail 62

[0090] Transmission mechanism 63

[0091] Drive mechanism 64

[0092] Fastener 65

[0093] Unlocked status X

[0094] Unlocked state Y

[0095] The length M of the unlocking lever protruding from the unlocking cylinder

[0096] The length N of the unlocking cylinder

[0097] Length L of the guide section Detailed Implementation

[0098] 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.

[0099] Example 1

[0100] like Figure 1-13As shown, an unlocking assembly 100 is disclosed, which is disposed on a battery swapping device and used to unlock a locking mechanism on an electric vehicle to unlock the battery pack from the electric vehicle. The unlocking assembly 100 includes an unlocking rod 200, an unlocking cylinder 300, and a fixing plate 400. The unlocking rod includes a lifting portion 21 and a guide portion 22 connected in sequence along its length direction.

[0101] The axes of the unlocking lever 200 and the unlocking cylinder 300 coincide, which improves the accuracy of the alignment between the unlocking component 100 and the locking mechanism on the electric vehicle in the corresponding position.

[0102] The first end 31 of the unlocking cylinder 300 has a first opening 311, and the unlocking rod 200 is inserted into the unlocking cylinder 300, such as... Figure 5 and Figure 8 As shown, the guide portion 22 of the unlocking rod 200 extends into the unlocking cylinder 300 from the first opening 311. The portion of the unlocking rod 200 inserted into the unlocking cylinder 300 varies depending on the different states of the unlocking assembly 100. The second end 32 of the unlocking cylinder is mounted on the fixing plate 400, which supports the unlocking cylinder 300 and the unlocking rod 200. In the non-unlocked state Y, except for the part connecting the unlocking rod 200 to the unlocking cylinder 300 which needs to be embedded in the unlocking cylinder 300, the remaining part of the unlocking rod 200 extends completely out of the unlocking cylinder 300. In this state, the ratio between the sum of the length of the lifting portion 21, the length L of the guide portion 22, and the length N of the unlocking cylinder 300 and the length M of the unlocking rod 200 exposed in the unlocking cylinder 300 is greater than 1 and less than 5. This maximizes redundancy, increases fault tolerance, and improves applicability while maintaining good economic efficiency.

[0103] Compared to the existing technology, in the non-unlocked state, the total length N of the unlocking cylinder 300 and the length M of the unlocking rod 200 protruding from the unlocking cylinder 300 remain unchanged. By setting the ratio between the sum of the lengths of the lifting part 21, the guide part 22, and the unlocking cylinder 300 and the length M of the unlocking rod protruding from the unlocking cylinder to be greater than 1 and less than 5, the compression stroke of the unlocking rod 200 within the unlocking cylinder 300 can be increased. The compression stroke of the unlocking rod 200 within the unlocking cylinder 300 is the change in the length of the unlocking rod 200 protruding from the unlocking cylinder 300 when switching from the non-unlocked state Y to the unlocked state X, that is... The length of the unlocking rod 200 compressed within the unlocking cylinder 300 can be increased to increase the redundancy (i.e., difference) range between the maximum compression stroke of the unlocking rod 200 within the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 within the unlocking cylinder 300 during the unlocking process. This can prevent the unlocking rod 200 from being locked without buffer during the unlocking process, reduce wear on the top of the unlocking rod 200, and increase the service life of the unlocking rod 200. Furthermore, it can improve the fault tolerance of the unlocking rod 200, increase the redundancy of battery swapping errors, and thus improve the success rate of battery swapping unlocking. Moreover, it maximizes redundancy while maintaining good economic efficiency.

[0104] In this embodiment, as Figure 4 As shown, the connection between the unlocking rod 200 and the unlocking cylinder 300 is the guide portion 22, and the portion of the unlocking rod 200 exposed above the unlocking cylinder 300 is the entire lifting portion 21. That is, the length M of the unlocking rod 200 exposed above the unlocking cylinder 300 is the same as the length of the lifting portion 21. In other words, the ratio between the sum of the length of the lifting portion 21, the length L of the guide portion 22, and the length N of the unlocking cylinder 300, and the length of the lifting portion 21, is greater than 1 and less than 5. In other embodiments, the portion of the unlocking rod 200 exposed above the unlocking cylinder 300 is a partial lifting portion 21, as long as the above ratio range is satisfied.

[0105] Specifically, such as Figure 1 As shown, the locking mechanism 500 includes a locking link 51, and an unlocking block 52 is provided below the locking link 51. The top of the unlocking component 100 is aligned with the unlocking block 52, as shown. Figure 1As shown, the unlocking rod 200 is guided into the groove 521 at the bottom of the unlocking block 52 of the locking mechanism 500. During unlocking, the unlocking rod 200 acts on the unlocking block and opens the locking linkage 51. When the locking linkage 51 is fully open, the actual compression stroke of the unlocking rod 200 in the unlocking cylinder 300 is less than the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300. Furthermore, there is a certain redundancy between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 in the unlocking cylinder 300 during the unlocking process. This ensures that the unlocking rod 200 has a buffer throughout the entire unlocking process of lifting the locking linkage 51, reducing wear on the top of the unlocking rod 200 and increasing its service life. It also improves the fault tolerance of the unlocking rod 200, increases the redundancy of battery swapping errors, and thus improves the success rate of battery swapping unlocking.

[0106] In this embodiment, the ratio between the sum of the length of the lifting part 21, the length L of the guide part 22, and the length N of the unlocking cylinder 300 and the length M of the unlocking rod 200 exposed in the unlocking cylinder 300 is greater than 1 and less than 5. Correspondingly, the redundancy (i.e., the difference) between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 in the unlocking cylinder 300 during the unlocking process is between 3 and 15. Under the condition of good economy, redundancy is maximized, fault tolerance is high, and applicability is high.

[0107] If the ratio between the sum of the length of the lifting part 21, the length L of the guide part 22, and the length N of the unlocking cylinder 300 and the length M of the unlocking rod 200 protruding from the unlocking cylinder 300 is less than 1, and the redundancy between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 in the unlocking cylinder 300 during the unlocking process is less than 3, it will result in the unlocking rod 200 having no buffer and hard-locking mechanism 500 during the unlocking process. This will accelerate the wear of the top of the unlocking rod 200, shorten the service life of the unlocking rod 200, and reduce the fault tolerance of the unlocking rod 200, leading to a low success rate of battery swapping unlocking. If the ratio between the sum of the length of the lifting part 21, the length L of the guide part 22, and the length N of the unlocking cylinder 300 and the length M of the unlocking rod 200 protruding from the unlocking cylinder 300 is greater than 5, the redundancy between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 in the unlocking cylinder 300 during the unlocking process exceeds 15, resulting in insufficient space between the battery swapping equipment and the electric vehicle, and also leading to a complex structure, high cost, and poor economic efficiency of the battery swapping equipment.

[0108] like Figure 10-11As shown, an unlocking cylinder avoidance surface 33 is provided on the outer wall of the first end 31 of the unlocking cylinder 300. The purpose of setting the unlocking cylinder avoidance surface 33 is that, since the size of the battery pack is not fixed and the position of the battery pack may also be inaccurate, setting the unlocking cylinder avoidance surface 33 can increase the redundancy range between the unlocking cylinder 300 and the battery pack and / or the unlocking cylinder 300 and the electric vehicle, so as to avoid the first end 31 of the unlocking cylinder 300 from colliding with the battery pack and the body bracket on the electric vehicle when unlocking, and avoid damaging the battery pack and the unlocking component 100. That is, the unlocking cylinder avoidance surface 33 is used to avoid the battery pack and / or the electric vehicle.

[0109] Specifically, the number of clearance surfaces 33 of the unlocking cylinder is at least two, and they are symmetrically arranged along the axis of the unlocking cylinder 300. This structural design further ensures the integrity of the unlocking assembly 100 and the battery pack.

[0110] like Figure 5 , Figure 8 and Figure 12 As shown, the unlocking assembly 100 also includes an elastic component 34, which is disposed within the unlocking cylinder 300, and the unlocking rod 200 abuts against the elastic component 34. By providing the elastic component 34 within the unlocking cylinder 300, the elastic component 34 provides elastic support to the unlocking assembly 100. The unlocking rod 200 then reciprocates along the axial direction of the unlocking cylinder 300 under the elastic support provided by the elastic component 34, thereby improving the working efficiency of the unlocking assembly 100 during unlocking. Simultaneously, the elastic component 34 being disposed within the unlocking cylinder 300 results in a simple and compact structure, improving the utilization rate of space resources.

[0111] Specifically, the elastic component 34 is a rectangular spring. In this embodiment, compared to conventional linear springs, the rectangular spring has a larger cross-section, which increases the contact area between the elastic component 34 and the second end of the protrusion, reduces the force generated when the unlocking rod 200 acts on the rectangular spring, improves the stability of the rectangular spring, and increases the maximum elastic support force that the unlocking assembly 100 can provide during the unlocking process, enabling the unlocking assembly 100 to unlock battery packs from different manufacturers. Simultaneously, the rectangular spring has a larger pitch; for the same length, the number of coils in a rectangular spring is less than that in a linear spring. Therefore, during the movement of the unlocking rod 200 along its axis, the rectangular spring has a greater compression ratio, higher fault tolerance, and greater stiffness and longer service life.

[0112] The compression stroke of the unlocking rod 200 within the unlocking cylinder 300 depends on the compression stroke of the elastic component 34. The compression stroke of the elastic component 34 refers to the change in the elastic component 34 when the unlocking assembly switches from the non-unlocked state Y to the unlocked state X. Therefore, the rectangular spring can increase the compression stroke of the unlocking rod 200 within the unlocking cylinder 300, thereby improving the success rate of battery swapping unlocking.

[0113] like Figure 10-11 As shown, the second end 32 of the unlocking cylinder has a second opening 321, and the fixing plate 400 has a through hole 41 communicating with the second opening 321. The second end 342 of the elastic member 34 can pass through the second opening 321 and extend into the through hole 41. This structure can increase the length of the rectangular spring, thereby increasing the compression stroke of the rectangular spring, making the unlocking rod 200 more forgiving, and further improving the success rate of battery swapping unlocking.

[0114] like Figure 9 As shown, the first end 211 of the lifting part is a free end, which is the end closest to the locking mechanism; the second end 212 of the lifting part is connected to the first end 221 of the guide part, and the second end 222 of the guide part extends from the first end 31 of the unlocking cylinder into the unlocking cylinder 300. The lifting part 21 acts on the locking mechanism to unlock; the guide part 22 stably connects the unlocking rod 200 and the unlocking cylinder 300 together, preventing the unlocking rod 200 from disengaging from the unlocking cylinder 300 during the unlocking process.

[0115] Specifically, the outer wall shape of the guide portion 22 of the unlocking rod 200 matches the inner wall shape of the unlocking cylinder 300, which can improve the fit between the unlocking rod 200 and the unlocking cylinder 300, guide the compression movement of the unlocking rod 200 in the unlocking cylinder 300, and effectively prevent the unlocking rod 200 from shaking in the unlocking cylinder 300, thereby improving the overall stability of the unlocking assembly 100.

[0116] The radial dimension of the lifting portion 21 is less than or equal to the radial dimension of the guide portion 22. In this embodiment, the radial dimension of the lifting portion 21 is less than the radial dimension of the guide portion 22. By reducing the radial dimension of the lifting portion 21 that the unlocking rod 200 needs to extend between the battery pack and the vehicle body bracket, making it smaller than the gap between the battery pack and the vehicle body bracket, it can smoothly extend between the battery pack and the vehicle body bracket to unlock the locking mechanism, thereby ensuring that the unlocking component 100 can smoothly achieve the unlocking function.

[0117] like Figure 9As shown, the unlocking rod 200 also includes a fixing part 23. The fixing part 23 is disposed at the second end 222 of the guide part 22. The radial dimension of the fixing part 23 is smaller than that of the guide part 22. The fixing part 23 is embedded in the first end 341 of the elastic member, and the second end 222 of the guide part 22 abuts against the first end 341 of the elastic member. The above arrangement can reduce the contact area between the unlocking rod 200 and the unlocking cylinder 300, thereby reducing the resistance of the unlocking rod 200 in the compression movement within the unlocking cylinder 300 and increasing the compression stroke of the unlocking rod 200 within the unlocking cylinder 300. Embedding the fixing part 23 in the first end 341 of the elastic member can serve as a guide, further improving the connection stability of the unlocking cylinder 300 to the unlocking rod 200, while preventing the unlocking rod 200 from detaching from the support of the elastic member 34, thus preventing the unlocking rod 200 from being subjected to the elastic force of the elastic member 34. The guide part 22 and the fixing part 23 guide the unlocking rod 200 within the unlocking cylinder 300, thereby improving the stability of the unlocking rod 200's movement within the unlocking cylinder 300.

[0118] Furthermore, the radial dimension of the fixing part 23 is smaller than the radial dimension of the elastic member 34, which makes it easier for the fixing part 23 to be embedded in the first end 341 of the elastic member in the axial direction of the elastic member 34. This can improve the connection stability of the unlocking cylinder 300 to the unlocking rod 200, while preventing the unlocking rod 200 from detaching from the support of the elastic member 34, so that the unlocking rod 200 cannot be subjected to the elastic force of the elastic member 34.

[0119] like Figure 1 and Figure 9 As shown, an inclined guide surface 213 is provided on the lifting part 21 to guide the unlocking rod 200 into the groove 521 at the bottom of the unlocking block 52 of the locking mechanism 500 when unlocking the battery pack. When the unlocking assembly 100 contacts the unlocking block of the locking mechanism at the bottom of the electric vehicle, the inclined guide surface 213 matches the shape of the unlocking block on the locking mechanism, thus guiding the unlocking rod 200. Figure 9 As shown, two inclined guide surfaces 213 are symmetrically arranged on the lifting part 21.

[0120] A top clearance surface 214 is provided on the lifting part 21. The top clearance surface 214 can play a clearance and guiding role. On the one hand, the top clearance surface 214 guides the unlocking rod 200 when it rises. On the other hand, the top clearance surface 214 can avoid the battery pack or the vehicle frame, preventing the unlocking rod 200 from colliding with the battery pack or the vehicle frame and damaging the battery pack or the unlocking rod 200, and facilitating the upper end of the unlocking rod 200 to extend into the gap between the battery pack and the vehicle frame. In this embodiment, as shown... Figure 9 As shown, two top clearance surfaces 214 are symmetrically arranged on the lifting part 21.

[0121] like Figure 9As shown, two inclined guide surfaces 213 and two top clearance surfaces 214 are symmetrically arranged on the lifting part 21, and the inclined guide surfaces 213 and the top clearance surfaces 214 are staggered along the circumference of the unlocking rod 200.

[0122] In other embodiments, the lifting part 21 may only be provided with an inclined guide surface 213 or only with a top clearance surface 214, which can be adjusted according to the actual situation and achieve the corresponding effect.

[0123] like Figure 2-8 , Figure 10-11 As shown, the unlocking cylinder 300 is also provided with a guide hole 35, which extends through the unlocking cylinder 300 along its axial direction. Simultaneously, the unlocking rod 200 is provided with a limiting member 36, which extends into the guide hole 35 and can slide along the extending direction of the guide hole 35. The cooperation between the guide hole 35 and the limiting member 36 restricts the movement range of the unlocking rod 200 within the unlocking cylinder 300, preventing the unlocking rod 200 from detaching from the unlocking cylinder 300 and improving the stability of the connection between the unlocking rod 200 and the unlocking cylinder 300.

[0124] Specifically, the guide hole 35 on the unlocking cylinder 300 includes a first guide hole 351 and a second guide hole 352. The first guide hole 351 and the second guide hole 352 extend relative to the axis of the unlocking cylinder 300 and are symmetrically arranged on both sides of the unlocking cylinder 300. Correspondingly, a limiting hole 361 is provided on the unlocking rod 200, and the limiting member 36 passes through the first guide hole 351, the limiting hole 361 and the second guide hole 352 in sequence and is installed on the unlocking cylinder 300. This structural method further increases the installation stability between the unlocking rod 200 and the unlocking cylinder 300. At the same time, it facilitates installation and disassembly, is highly operable, has a simple structure, and improves installation efficiency.

[0125] In this embodiment, such as Figure 2-4 As shown, the limiting member 36 also includes an anti-detachment member 38 and an anti-wear member 39.

[0126] The anti-detachment component 38 is disposed at the end of the limiting component 36 to prevent the limiting component 36 from disengaging from the guide hole 35, thereby making the structure of the unlocking rod 200 safer and more reliable. The anti-wear component 39 is disposed between the unlocking cylinder 300 and the anti-detachment component 38. The anti-wear component 39 can effectively prevent the anti-detachment component 38 from being damaged or even broken due to mutual friction between it and the edge of the guide hole 35 on the unlocking cylinder 300, thus improving the service life of the unlocking assembly 100.

[0127] Preferably, a through hole 37 is provided on the second end 32 of the unlocking cylinder. The purpose of providing the columnar hole is to clean up the excess residue generated in the unlocking cylinder 300 during the unlocking process of the unlocking rod 200, so as to avoid the excess residue from interfering with the normal operation of the elastic component 34, ensuring that the elastic component 34 is always in the best state during operation, and thus improving the flexibility of the elastic component 34 in the unlocking assembly 100 during operation.

[0128] Furthermore, in this embodiment, there are two through holes 37, which are symmetrically arranged on both sides of the unlocking cylinder 300 along the axial direction of the unlocking cylinder 300. This structure makes it easier for staff to clean the residue inside the unlocking cylinder 300 in a timely and thorough manner, simplifying the cleaning procedure and improving cleaning efficiency.

[0129] When the unlocking component 100 changes from the non-unlocked state Y to the unlocked state X, that is, when the unlocking rod 200 moves in the axial direction within the unlocking cylinder 300 during the unlocking process, an elastic change segment is formed on the elastic component 34. This elastic change segment can be used by the staff to judge the working capacity and working condition of the elastic component 34, so as to facilitate the staff to replace and repair the elastic component 34 in a timely manner and ensure that the unlocking component 100 is always in a normal and stable state.

[0130] In this embodiment, the ratio between the sum of the lengths of the lifting portion 21, the guide portion 22, and the unlocking cylinder 300, and the length M of the unlocking rod 200 protruding from the unlocking cylinder 300, is greater than 1 and less than 5. This results in greater fault tolerance, higher applicability, and maximized redundancy while maintaining good economic efficiency. Specifically, the length M of the unlocking cylinder 300 ranges from 49 to 37 mm, the guide portion 22 has a minimum length of 6 mm, the length of the unlocking rod 200 protruding from the unlocking cylinder 300 ranges from 28 to 40 mm, and the compression ratio of the elastic component 34 is less than or equal to 50%. A compression ratio of less than or equal to 50% meets the requirements of the elastic component 34 in this embodiment, resulting in a long service life. The redundancy (i.e., the difference) between the maximum compression stroke of the unlocking rod 200 within the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 within the unlocking cylinder 300 during the unlocking process ranges from 3 to 15, further enhancing fault tolerance and applicability.

[0131] If the ratio of the sum of the lengths of the lifting part 21, the guide part 22, and the unlocking cylinder 300 to the length M of the unlocking rod 200 protruding from the unlocking cylinder 300 is less than 1, the unlocking rod 200 will have no buffer and will hard-lock the locking mechanism 500 during the unlocking process. This will accelerate the wear on the top of the unlocking rod 200, shorten its service life, reduce its fault tolerance, and lower the success rate of battery swapping unlocking. If the ratio of the sum of the lengths of the lifting part 21, the guide part 22, and the unlocking cylinder 300 to the length M of the unlocking rod 200 protruding from the unlocking cylinder 300 is greater than 5, the space between the battery swapping equipment and the electric vehicle will be insufficient, resulting in a complex structure, high cost, and poor economic efficiency for the battery swapping equipment.

[0132] In a preferred embodiment, the portion of the unlocking rod 200 protruding from the unlocking cylinder 300 is the entire lifting portion 21. The length of the unlocking cylinder 300 is 49 mm, and the length of the guide portion 22 is 6 mm. In the non-unlocked state, the length of the unlocking rod 200 protruding from the unlocking cylinder 300 is 28 mm, and the length of the elastic component 34 is 43 mm. The redundancy of the compression stroke and elastic change segment of the unlocking rod 200 relative to the compression stroke and elastic change segment during the actual unlocking process is 9 mm to 10 mm. By satisfying this redundancy within this range, and maximizing redundancy under economical conditions, the unlocking rod 200 has greater fault tolerance and higher reliability. This reduces wear on the top of the unlocking rod 200, increases its service life, and significantly improves the success rate of battery swapping unlocking.

[0133] Example 2

[0134] like Figure 14 As shown, a battery swapping device 600 is disclosed. The battery swapping device 600 adopts the unlocking component 100 in Embodiment 1 above. The battery swapping device 600 also includes a base 61, a guide rail 62, a transmission mechanism 63, and a drive mechanism 64, wherein, as... Figure 14 As shown, the fixing plate 400 is fixed to the base 61 by the fixing member 65. Specifically, the base 61 is a guide block and is slidably arranged on the guide rail 62 to guide the movement of the unlocking component 100. The fixing member 65 is a bolt, and the fixing plate 400 is fixed to the guide block by bolt connection.

[0135] The fixing plate 400 has a through hole 41 communicating with the second opening 321 of the unlocking cylinder 300. The second end 342 of the elastic member 34 can pass through the through hole 41 and abut against the upper surface of the base 61. The elastic member 34 is a rectangular spring. This structure can increase the length of the rectangular spring, thereby increasing the compression stroke of the rectangular spring, making the unlocking rod 200 more forgiving, and further improving the success rate of battery swapping unlocking.

[0136] The fixed plate 400 is connected to and used in conjunction with the transmission mechanism 63. The drive mechanism 64 drives the transmission mechanism 63, thereby causing the unlocking component 100 to adjust its position along the extension direction of the guide rail 62.

[0137] In the battery swapping equipment 600, by setting the ratio range between the sum of the lengths of the lifting part 21, the guide part 22, and the unlocking cylinder 300 and the length M of the unlocking rod protruding from the unlocking cylinder, the compression stroke of the unlocking rod 200 within the unlocking cylinder 300 can be increased. This increases the redundancy (i.e., difference) range between the maximum compression stroke of the unlocking rod 200 within the unlocking cylinder 300 and the actual compression stroke required by the unlocking rod 200 within the unlocking cylinder 300 during the unlocking process. This prevents the unlocking rod 200 from being without buffer and hard-locked during unlocking, reduces wear on the top of the unlocking rod 200, and increases the service life of the unlocking rod 200. Furthermore, it can improve the fault tolerance of the unlocking rod 200, increase the battery swapping error redundancy, and thus improve the success rate of battery swapping unlocking.

[0138] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0139] 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. An unlocking component, the unlocking component comprising: Unlocking lever, unlocking cylinder, and fixing plate; The unlocking lever includes a lifting portion and a guide portion connected in sequence along its length; The first end of the unlocking cylinder has a first opening, and the guide portion extends into the unlocking cylinder through the first opening; the second end of the unlocking cylinder is mounted on the fixing plate, characterized in that... In the unlocked state, the ratio between the sum of the length of the lifting part, the length of the guide part, and the length of the unlocking cylinder and the length of the unlocking rod protruding from the unlocking cylinder is greater than 1 and less than 5; The unlocking assembly further includes an elastic component disposed inside the unlocking cylinder. The guide portion of the unlocking rod abuts against the elastic component. The second end of the unlocking cylinder has a second opening. The fixing plate has a through hole communicating with the second opening. The elastic component can pass through the second opening and extend into the through hole.

2. The unlocking component as described in claim 1, characterized in that, The outer wall of the first end of the unlocking cylinder is provided with an unlocking cylinder avoidance surface, which is used to avoid battery packs and / or electric vehicles.

3. The unlocking component as described in claim 1, characterized in that, The elastic component is a rectangular spring.

4. The unlocking component as described in claim 1, characterized in that, The first end of the lifting part is a free end, and the second end of the lifting part is connected to the first end of the guide part; The second end of the guide extends from the first end of the unlocking cylinder into the unlocking cylinder.

5. The unlocking component as described in claim 4, characterized in that, The outer wall shape of the guide portion matches the inner wall shape of the unlocking cylinder; And / or, the radial dimension of the jacking portion is less than or equal to the radial dimension of the guide portion.

6. The unlocking component as described in claim 4, characterized in that, The unlocking rod also includes a fixing part, which is located at the second end of the guide part, and the radial dimension of the fixing part is smaller than the radial dimension of the guide part. The fixing part is embedded in the first end of the elastic member, and the second end of the guide part abuts against the first end of the elastic member.

7. The unlocking component as described in claim 4, characterized in that, The lifting part is provided with an inclined guide surface and / or a top clearance surface. The inclined guide surface and / or the top clearance surface are spaced circumferentially along the unlocking rod.

8. The unlocking component as described in claim 1, characterized in that, The unlocking cylinder is provided with a guide hole, which extends along the axial direction of the unlocking cylinder; The unlocking rod is provided with a limiting member, which extends into the guide hole and can slide along the extension direction of the guide hole; And / or, the second end of the unlocking cylinder is provided with a through hole, which is used to clean the residue inside the unlocking cylinder.

9. A battery swapping device, characterized in that, Includes the unlocking component as described in any one of claims 1 to 8.

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