Battery pack charging racks and mobile battery swapping stations

Abstract

This invention provides a battery pack charging rack and a mobile battery swapping station. The battery pack charging rack includes multiple support frames, side frames, multiple battery slide rails, and multiple locking mechanisms. The support frames are arranged sequentially at intervals along a predetermined direction, and the side frames are connected to the sides of the support frames. Multiple battery slide rails are respectively located on the side of each support frame facing its adjacent support frame. The sidewalls of the battery slide rails have grooves extending to the side away from the side frames to form an entrance / exit. Multiple locking mechanisms are correspondingly located on the battery slide rails, and each locking mechanism includes a controllable pivoting locking element. This invention has a simple structure and low manufacturing cost. Furthermore, the battery slide rails provide stable support for the battery packs. By switching the working state of the locking mechanisms to coordinate with the battery pack loading and unloading device, the difficulty of loading and unloading the battery packs is reduced, and the efficiency of loading and unloading the battery packs is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery swapping technology, specifically relating to a battery pack charging rack and a mobile battery swapping station. Background Technology

[0002] With the rapid development of the new energy vehicle industry, mobile battery swapping has become an important solution to address range anxiety in electric vehicles, and its market demand is growing daily. In mobile battery swapping systems, the storage, charging, and rapid turnover of battery packs are the core links to ensure swapping efficiency. As a key piece of equipment for battery pack storage and charging, the structural rationality of battery pack charging racks directly affects the stability and economy of the swapping process.

[0003] Currently, the mainstream battery pack charging racks in the industry are mainly divided into two categories: beam racks and automated racks. Beam racks are storage structures formed by combining vertical frames on both sides with horizontal beams. Battery packs are typically placed directly on the beams for stacking. While this structure is characterized by low manufacturing costs and simple structure, it has significant drawbacks in practical applications: Firstly, charging is difficult because the battery packs are in close contact with the beams, lacking dedicated space for charging interfaces, requiring frequent manual plugging and unplugging of charging cables, which is not only inefficient but also poses a risk of electric shock. Secondly, the ease of retrieving and placing battery packs is poor. The beam structure lacks auxiliary handling mechanisms, and when battery packs are heavy, manual handling can easily lead to operator fatigue. Furthermore, when stacking, retrieving and placing upper-level battery packs requires external lifting equipment, severely restricting battery swapping turnover efficiency. The other mainstream solution is automated racks, which use automated equipment such as tracks, robotic arms, or shuttles to automatically transfer battery packs between storage, charging, and retrieval / placement stations. The charging process is completed at a fixed charging station, while retrieval and placement operations are performed at independent stations. While this solution can improve the level of automation, it has problems such as complex structure and high cost: automated racks need to integrate a precision transmission system, control system and positioning device, with a large number of parts and high processing precision requirements, which leads to a significant increase in equipment manufacturing costs; at the same time, the complex mechanical structure also increases the difficulty of equipment maintenance, and failure in any link may cause the entire rack system to stop operating, affecting the continuity of battery swapping services, making it difficult to popularize and apply in small and medium-sized battery swapping stations.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a battery pack charging shelf that solves the problems of difficulty in retrieving and placing batteries and complex structure of existing shelves.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a battery pack charging rack, which includes multiple support frames, side frames, multiple battery slide rails, and multiple locking mechanisms. The multiple support frames are arranged sequentially at intervals along a predetermined direction, and the side frames are connected to the sides of the multiple support frames. Multiple battery slide rails are respectively located on the side of each support frame facing its adjacent support frame. A groove is formed on the side wall of each battery slide rail, extending to the side of the battery slide rail away from the side frame to form an inlet / outlet. The groove is used to cooperate with the rollers of the battery pack, allowing the battery pack to move controllably along the battery slide rail. Multiple locking mechanisms are correspondingly located on the multiple battery slide rails. Each locking mechanism includes a controllably pivotable locking element and has a locked state and an unlocked state. When the locking mechanism is in the locked state, the locking element is at least partially located within the groove, thereby preventing the rollers of the battery pack from moving out of the groove. When the locking mechanism is in the unlocked state, the locking element can controllably pivot about its pivot axis and move out of the groove.

[0007] In one or more embodiments of this utility model, a first opening communicating with a slide groove is provided through the top wall of the battery slide rail, the pivot axis of the locking member is parallel to the groove opening direction, and the locking member moves into or out of the slide groove through the first opening.

[0008] In one or more embodiments of this utility model, the top of the locking member is provided with a guide portion located on the side of the pivot axis away from the inlet / outlet. The guide portion has a first guide surface extending obliquely upward on the side near the inlet / outlet. The distance between the first guide surface and the slide groove gradually increases in the direction near the pivot axis. The first guide surface is used to cooperate with a horizontally movable unlocking pin on the battery pack loading / unloading device to drive the locking member to pivot from a locked state to an unlocked state.

[0009] In one or more embodiments of this utility model, a guide groove is provided on the top of the locking member, and a second guide surface is formed in the guide groove, which is connected to the first guide surface and located on the same plane as the first guide surface. When the locking mechanism switches from the locked state to the unlocked state, the unlocking pin moves into the guide groove under the guidance of the first and second guide surfaces.

[0010] In one or more embodiments of this utility model, the locking mechanism further includes a fixing block and an elastic element. The fixing block is disposed on the top of the battery slide rail and located on the side of the locking element away from the entrance / exit. The elastic element is connected to the locking element and the fixing block. When the locking mechanism is in the locked state and the unlocked state, the elastic element is in a stretched state.

[0011] In one or more embodiments of this utility model, when the locking mechanism is in the locked state, the elastic element is stretched in the horizontal direction.

[0012] In one or more embodiments of the present invention, the locking mechanism further includes a mounting base disposed on the top of the battery slide rail, the mounting base having a second opening communicating with the first opening, and the pivot shaft disposed within the second opening.

[0013] In one or more embodiments of the present invention, the battery pack charging rack further includes a connector disposed on the side frame, the connector being used for electrically connecting the battery pack and the charging source.

[0014] In one or more embodiments of this utility model, the battery pack charging rack further includes a positioning member disposed on the side of the battery slide rail away from the side frame. The positioning member has a positioning hole, which is used to cooperate with a horizontally movable positioning pin on the battery pack loading and unloading device.

[0015] In one or more embodiments of this utility model, the side frame is provided in multiple ways, and each side frame is connected to two adjacent load-bearing frames.

[0016] In one or more embodiments of this utility model, the battery pack charging rack further includes a top connecting structure connecting two adjacent support frames, wherein the top connecting structure is a frame structure or a beam structure.

[0017] In another aspect, this utility model also provides a mobile battery swapping station, which includes a battery swapping truck and the aforementioned battery pack charging rack. The battery swapping truck includes a cargo compartment, the battery pack charging rack is disposed inside the cargo compartment, and a plurality of the supporting frames are arranged along the length of the cargo compartment.

[0018] Compared with existing technologies, this utility model has a simple structure and low manufacturing cost. Furthermore, the battery slide rail can provide stable support for the battery pack, and by switching the working state of the locking mechanism to cooperate with the battery pack loading and unloading device, the difficulty of loading and unloading the battery pack is reduced, and the efficiency of loading and unloading the battery pack is improved. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a three-dimensional structural diagram of a battery pack charging rack in one embodiment of the present invention;

[0021] Figure 2 This is a perspective view of the battery slide rail and locking mechanism in one embodiment of the present invention;

[0022] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0023] Figure 4 This is a partial side view of the battery slide rail and locking mechanism in one embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the locking mechanism in the locked state according to one embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the locking mechanism in the unlocked state according to one embodiment of the present invention;

[0026] Figure 7 This is a side view of the locking component in one embodiment of the present invention.

[0027] Key reference numerals in the attached drawings: 1. Support frame; 2. Side frame; 3. Battery slide rail; 31. Slide groove; 32. Inlet / outlet; 33. First opening; 4. Locking mechanism; 41. Locking element; 411. Guide part; 4111. First guide surface; 412. Guide groove; 4121. Second guide surface; 42. Pivot shaft; 43. Fixing block; 44. Elastic element; 45. Mounting base; 451. Second opening; 5. Positioning element; 51. Positioning hole; 6. Top connection structure; 7. Connector; 8. Roller; 9. Unlocking pin. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0029] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.

[0030] Furthermore, the terms "second" and "first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Reference Figures 1 to 3 As shown, an embodiment of the present invention provides a battery pack charging shelf for storing battery packs. The battery packs are roughly square prisms in shape, and rollers 8 are provided on both sides of the battery packs. The battery pack charging shelf includes multiple load-bearing frames 1, side frames 2, top connecting structure 6, multiple battery slide rails 3, and multiple locking mechanisms 4.

[0032] Specifically, multiple support frames 1 are arranged sequentially at intervals along a preset direction, which is roughly parallel to the horizontal plane. A storage space for the battery pack is formed between adjacent support frames 1. Side frames 2 are connected to the sides of the multiple support frames 1, and a top connecting structure 6 is connected to the top of the multiple support frames 1. The top connecting structure 6 can be a frame structure or a beam structure. Multiple battery slide rails 3 are respectively located on the side of each support frame 1 facing its adjacent support frame 1. For example, if three support frames 1 are arranged sequentially from left to right, the battery slide rail 3 is installed on the right side of the left support frame 1, battery slide rails 3 are installed on both the left and right sides of the middle support frame 1, and battery slide rail 3 is installed on the left side of the right support frame 1. Two opposing battery slide rails 3 cooperate to support the same battery pack. A groove 31 is formed on the side wall of the battery slide rail 3, extending to the side of the battery slide rail 3 away from the side frame 2 to form an inlet / outlet 32. The groove 31 cooperates with the rollers 8 of the battery pack, allowing the battery pack to move controllably along the battery slide rail 3. Multiple locking mechanisms 4 are provided one-to-one on multiple battery slide rails 3. Each locking mechanism 4 includes a controllable pivoting locking element 41 and has a locked state and an unlocked state.

[0033] According to the above structural design, when the locking mechanism 4 is in the locked state, the locking member 41 is at least partially located in the slide groove 31 and on the movement path of the battery pack roller 8, which restricts the battery pack roller 8 from moving out of the slide groove 31 through the inlet and outlet 32, and fixes the battery pack on the battery slide rail 3 for storage.

[0034] When the locking mechanism 4 is in the unlocked state, the locking element 41 can pivot controllably around its pivot axis 42 and move out of the slide 31. At this time, the battery pack rollers 8 are no longer restricted by the locking element 41. Driven by the battery pack loading and unloading device or manual handling, the battery pack rollers 8 can roll along the slide 31 and disengage from the battery slide rail 3 via the inlet / outlet 32 ​​on the battery slide rail 3, thereby removing the battery pack from the battery slide rail 3. Of course, when it is necessary to store the battery pack on the battery pack charging rack, the locking mechanism 4 needs to be switched to the unlocked state first, the battery pack rollers 8 should be aligned with the inlet / outlet 32 ​​on the battery slide rail 3, and then the battery pack should be pushed so that its rollers 8 enter the slide 31. Then the locking mechanism 4 can be switched to the locked state.

[0035] In one embodiment, reference is made to Figure 1 As shown, the load-bearing frame 1 is composed of multiple crisscrossing steel beams or columns, and is generally a rectangular steel structure. Multiple side frames 2 are provided, each connecting to two adjacent load-bearing frames 1. The side frames 2 are also composed of multiple crisscrossing steel beams or columns, and are also generally rectangular steel structures. Multiple top connecting structures 6 are provided, each connecting to two adjacent load-bearing frames 1.

[0036] Furthermore, the side frame 2 and the top connecting structure 6 are provided with oblong holes. After the bolts pass through the oblong holes and are threaded into the threaded holes on the support frame 1, the side frame 2 and the top connecting structure 6 can be fixedly connected to the support frame 1. The bottom of the support frame 1 is provided with a height adjustment mechanism to facilitate the adjustment of the height of the support frame 1.

[0037] Furthermore, when there are three or more support frames 1, the length, width and height of each storage space (i.e. the space between two adjacent support frames 1) can be the same or different, and can be flexibly adjusted according to the model and size of the battery pack.

[0038] It should be noted that the structure of the load-bearing frame 1 and the side frame 2 in the above embodiments is one possible solution for practical application. For those skilled in the art, without departing from the technical principle of this application, steel beams or steel columns arranged along the diagonal of the rectangle can also be set on the load-bearing frame 1 and the side frame 2. As long as the load-bearing frame 1 and the side frame 2 can roughly form a rectangular frame structure, these improvements should also be considered within the scope of protection of this application.

[0039] In one embodiment, reference is made to Figures 4 to 6As shown, a first opening 33 communicating with a slide groove 31 is provided through the top wall of the battery slide rail 3. The locking mechanism 4 includes a mounting base 45 located on the top of the battery slide rail 3, and a second opening 451 communicating with the first opening 33 is provided through the mounting base 45. The pivot shaft 42 on the locking member 41 is parallel to the groove opening direction of the slide groove 31, and the pivot shaft 42 on the locking member 41 is located in the second opening 451. The locking member 41 moves into or out of the slide groove 31 through the first opening 33 and the second opening 451.

[0040] Furthermore, considering that after the battery pack is stored on the battery slide rail 3, the locking member 41 divides the space of the slide rail 31 into two parts, one part is used to accommodate the rollers 8 of the battery pack, and the other part is not used to accommodate battery pack-related components under normal circumstances. Therefore, in order to maximize the space utilization of the slide rail 31, the locking member 41 and the mounting base 45 are relatively close to the inlet / outlet 32 ​​on the battery slide rail 3, and are set as close to the inlet / outlet 32 ​​as possible.

[0041] In one embodiment, reference is made to Figure 1 As shown, each support frame 1 is equipped with multiple battery rails 3 arranged vertically. The storage space between two adjacent support frames 1 can store multiple battery packs, improving the space utilization rate of the storage space.

[0042] Furthermore, when battery slide rails 3 are installed on both the left and right sides of a certain supporting frame 1, in order to avoid interference between the battery slide rails 3 on the left and right sides, the two adjacent battery slide rails 3 on the left and right sides can be staggered vertically.

[0043] In one embodiment, reference is made to Figures 5 to 7 As shown, when the locking mechanism 4 is in the locked state, the cross-section of the portion of the locking member 41 located in the slide groove 31 is approximately triangular, with one hypotenuse extending towards the upper right and the other hypotenuse extending towards the upper left.

[0044] Furthermore, the top of the locking member 41 is provided with a guide portion 411. In the horizontal direction, the guide portion 411 is located on the side of the pivot shaft 42 away from the inlet / outlet 32. The guide portion 411 extends obliquely upward. On the side of the guide portion 411 near the inlet / outlet 32, a first guide surface 4111 extends obliquely upward. In the direction near the pivot shaft 42, the distance between the first guide surface 4111 and the slide groove 31 gradually increases.

[0045] The first guide surface 4111 is used to cooperate with the unlocking pin 9 on the battery pack loading and unloading device. The unlocking pin 9 can move horizontally. This horizontal movement can be understood as the unlocking pin 9 moving synchronously with the main structure of the battery pack loading and unloading device. For example, if the battery pack loading and unloading device is a battery swapping trolley, the trolley can move forward and backward and left and right along the horizontal direction. The unlocking pin 9 moves horizontally synchronously with the trolley as it moves. Alternatively, this horizontal movement can be understood as the unlocking pin 9 moving relative to the main structure of the battery pack loading and unloading device. For example, if the battery pack loading and unloading device is a battery swapping trolley, the unlocking pin 9 is controlled by a drive element (e.g., a cylinder, electric cylinder, hydraulic cylinder, or linear motor) on the battery swapping trolley to move horizontally relative to the main structure of the trolley.

[0046] When the locking mechanism 4 is in the locked state, the unlocking pin 9 moves horizontally toward the first guide surface 4111. After the unlocking pin 9 contacts the first guide surface 4111, relative sliding occurs between the unlocking pin 9 and the first guide surface 4111. However, due to the limitation of the battery pack loading and unloading device, the height of the unlocking pin 9 is fixed and cannot move up or down. Therefore, the horizontal movement of the unlocking pin 9 is converted into the upward movement of the first guide surface 4111. The upward movement of the first guide surface 4111 is limited by the pivot shaft 42, and its upward movement is converted into the upward pivoting of the locking member 41, thereby switching the locking mechanism 4 from the locked state to the unlocked state. Through the cooperation of the first guide surface 4111 and the unlocking pin 9, the battery pack loading and unloading device can quickly switch the locking mechanism 4 to the unlocked state when storing and retrieving the battery pack on the battery slide rail 3, improving the storage and retrieval efficiency of the battery pack.

[0047] Considering that the greater the length of the first guide surface 4111 in the inclined direction, the greater the pivot angle of the locking member 41. However, considering that increasing the length of the first guide surface 4111 also increases the length of the guide part 411 in the inclined direction, the structural strength of the guide part 411 will be significantly reduced, and the probability of bending deformation and fatigue damage of the guide part 411 under the action of the unlocking pin 9 will be significantly increased.

[0048] Therefore, in one embodiment, reference is made to Figure 7 As shown, in order to increase the length of the first guide surface 4111 in the inclined direction, increase the pivot angle of the locking member 41, and ensure that the guide part 411 has sufficient structural strength, a guide groove 412 is opened on the top of the locking member 41, and a second guide surface 4121 is formed in the guide groove 412. The second guide surface 4121 is connected to the first guide surface 4111 and is located on the same plane as the first guide surface 4111. The inclined directions of the two are approximately the same.

[0049] When the locking mechanism 4 switches from the locked state to the unlocked state, the unlocking pin 9 first contacts the first guide surface 4111 and slides relative to it, driving the locking member 41 to pivot. Then, the unlocking pin 9 enters the guide groove 412 and contacts the second guide surface 4121, sliding relative to it and driving the locking member 41 to continue pivoting. When the locking mechanism 4 is fully switched to the unlocked state, the unlocking pin 9 is located within the guide groove 412.

[0050] After setting the guide groove 412 and the second guide surface 4121, without increasing the length of the guide part 411, it is equivalent to increasing the length of the first guide surface 4111 in the inclined direction, which not only improves the pivot angle of the locking member 41, but also ensures that the guide part 411 has sufficient structural strength.

[0051] In one embodiment, reference is made to Figure 5 and Figure 6 As shown, the locking mechanism 4 also includes a fixing block 43 and an elastic member 44. The fixing block 43 is located on the top of the battery slide rail 3 and is located on the side of the locking member 41 away from the entrance / exit 32. The two sides of the elastic member 44 are respectively connected to the locking block and the fixing block 43.

[0052] When the locking mechanism 4 is in the locked state, the elastic element 44 is in a stretched state and is stretched approximately horizontally. The elastic force generated by the elastic element 44 provides a pulling force toward the fixing block 43 to the locking element 41, thereby fixing the locking element 41 in the locked state.

[0053] During the process of switching the locking mechanism 4 from the locked state to the unlocked state, after the unlocking pin 9 contacts the guide part 411, it drives the locking member 41 to pivot upward, and the elastic member 44 is further stretched. When the unlocking pin 9 disengages from the locking member 41, the elastic force of the elastic member 44 can drive the locking member 41 to automatically reset and remain stably in the locked state.

[0054] Preferably, the elastic element 44 can be a spring, and the end of the spring can be provided with a hook structure, which is connected to the locking element 41 and the fixing block 43.

[0055] In one embodiment, reference is made to Figure 3 As shown, the battery pack charging rack also includes multiple positioning components 5, which are correspondingly mounted on multiple battery slide rails 3. The positioning components 5 are located on the side of the battery slide rail 3 away from the side frame 2. The positioning components 5 are provided with positioning holes 51, which are used to cooperate with the positioning pins on the battery pack loading and unloading device to assist in positioning during the loading and unloading of the battery pack.

[0056] Furthermore, the positioning pin can move horizontally. The horizontal movement of the positioning pin is similar to the horizontal movement of the unlocking pin 9. Both can move horizontally synchronously with the main structure of the battery pack loading and unloading device, or move horizontally relative to the main structure of the battery swapping vehicle.

[0057] In one embodiment, reference is made to Figure 1 As shown, to facilitate charging of the battery packs stored on the battery pack charging rack, the battery pack charging rack also includes a connector 7. The connector 7 is located on the side frame 2 and is used to electrically connect the battery packs to a charging source (e.g., AC power), allowing the charging source to charge the battery packs on the charging rack. The connector 7 can float 5-10mm in each of the vertical, horizontal, and back-and-forth directions, ensuring that the electrical connector of the battery pack can be stably and safely inserted into the connector 7, avoiding unnecessary damage to parts during the insertion process.

[0058] On the other hand, one embodiment of this utility model also provides a mobile battery swapping station, which includes a battery swapping truck and the battery pack charging rack described in the above embodiment. The battery swapping truck includes a cargo box, which is a side-opening cargo box, and a side door on one side of the cargo box can be opened in a controlled manner. The battery pack charging rack is located inside the cargo box, and its multiple support frames 1 are arranged along the length of the cargo box. The number of support frames 1 can be adaptively adjusted according to the size of the cargo box. For example, when a light truck is used for the battery swapping truck, its cargo box length is relatively short, and generally only two or three support frames 1 can be set. When a medium or large truck is used for the battery swapping truck, the number of support frames 1 can be adaptively increased, so that the battery swapping truck can store a larger number of battery packs.

[0059] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery pack charging rack, characterized in that, The battery pack charging rack includes: Multiple load-bearing frames (1) are arranged at intervals along a preset direction. Side frame (2) is connected to the sides of the plurality of load-bearing frames (1); Multiple battery slide rails (3) are respectively provided on the side of each of the supporting frames (1) facing the other supporting frame (1) adjacent to it. A slide groove (31) is provided on the side wall of the battery slide rail (3). The slide groove (31) extends to the side of the battery slide rail (3) away from the side frame (2) to form an entrance (32). The slide groove (31) is used to cooperate with the rollers (8) of the battery pack so that the battery pack can be moved along the battery slide rail (3) in a controlled manner. Multiple locking mechanisms (4) are provided on multiple battery slide rails (3) in a one-to-one correspondence. Each locking mechanism (4) includes a controllable pivoting locking element (41) and has a locked state and an unlocked state. When the locking mechanism (4) is in the locked state, the locking element (41) is at least partially located in the slide groove (31), thereby restricting the roller (8) of the battery pack from moving out of the slide groove (31). When the locking mechanism (4) is in the unlocked state, the locking member (41) can be controlled to pivot about its pivot axis (42) and move out of the slide (31).

2. The battery pack charging rack according to claim 1, characterized in that, The top wall of the battery slide rail (3) is provided with a first opening (33) that communicates with the slide groove (31). The pivot axis (42) of the locking member (41) is parallel to the groove opening direction of the slide groove (31). The locking member (41) moves into or out of the slide groove (31) through the first opening (33).

3. The battery pack charging rack according to claim 2, characterized in that, The top of the locking member (41) is provided with a guide portion (411) located on the side of the pivot shaft (42) away from the entrance (32). The guide portion (411) has a first guide surface (4111) extending upward at an angle on the side near the entrance (32). In the direction near the pivot shaft (42), the distance between the first guide surface (4111) and the slide groove (31) gradually increases. The first guide surface (4111) is used to cooperate with the horizontally movable unlocking pin (9) on the battery pack loading and unloading device to drive the locking member (41) to pivot from the locked state to the unlocked state.

4. The battery pack charging rack according to claim 3, characterized in that, The top of the locking member (41) is provided with a guide groove (412), and a second guide surface (4121) is formed in the guide groove (412) that is connected to the first guide surface (4111) and located on the same plane as it. During the process of the locking mechanism (4) switching from the locked state to the unlocked state, the unlocking pin (9) moves into the guide groove (412) under the guidance of the first guide surface (4111) and the second guide surface (4121).

5. The battery pack charging rack according to claim 3, characterized in that, The locking mechanism (4) further includes a fixing block (43) and an elastic element (44). The fixing block (43) is located on the top of the battery slide rail (3) and on the side of the locking element (41) away from the entrance (32). The elastic element (44) is connected to the locking element (41) and the fixing block (43). When the locking mechanism (4) is in the locked state and the unlocked state, the elastic element (44) is in the stretched state.

6. The battery pack charging rack according to claim 5, characterized in that, When the locking mechanism (4) is in the locked state, the elastic element (44) is stretched in the horizontal direction.

7. The battery pack charging rack according to claim 2, characterized in that, The locking mechanism (4) also includes a mounting base (45) located on the top of the battery slide rail (3). The mounting base (45) has a second opening (451) that communicates with the first opening (33). The pivot shaft (42) is located inside the second opening (451).

8. The battery pack charging rack according to claim 1, characterized in that, The battery pack charging rack also includes a connector (7) provided on the side frame (2), the connector (7) being used for electrically connecting the battery pack and the charging source.

9. The battery pack charging rack according to claim 1, characterized in that, The battery pack charging rack also includes a positioning element (5) located on the side of the battery slide rail (3) away from the side frame (2). The positioning element (5) has a positioning hole (51) for engaging with a horizontally movable positioning pin on the battery pack loading and unloading device; and / or, The side frame (2) is provided in multiple parts, and each side frame (2) is connected to two adjacent load-bearing frames (1); and / or, The battery pack charging rack also includes a top connection structure (6) that connects two adjacent load-bearing frames (1), and the top connection structure (6) is a frame structure or a beam structure.

10. A mobile battery swapping station, characterized in that, The mobile battery swapping station includes: Battery swapping trucks, including the cargo box; The battery pack charging rack as described in any one of claims 1 to 9, wherein the battery pack charging rack is located inside the vehicle compartment, and the plurality of the supporting frames (1) are arranged along the length of the vehicle compartment.

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