A quick detachable modular power battery pack

Abstract

This invention relates to the field of power battery assembly technology, specifically to a modular power battery pack that can be quickly assembled and disassembled. The battery pack includes a battery frame and a receiving cavity within the battery frame. The receiving cavity has through slots on both sides, and locking components are installed within these slots. The battery has fixing slots on both sides that cooperate with the locking components. The locking components include a sliding rod slidably disposed within the sidewall of the through slot, with its inner end connected to a roller frame. A spring is fitted onto the sliding rod, and a roller assembly is housed within the roller frame. When the battery is placed into the receiving cavity, the battery sidewall presses against the roller assembly, causing the sliding rod to move outward and compress the spring. Under the reset action of the spring, the roller assembly enters the fixing slot, achieving automatic locking. An unlocking component is located on the top of the battery. The unlocking component includes a shaped disc and a push rod linked to the shaped disc. The push rod pushes the roller frame outward, causing the roller assembly to disengage from the fixing slot, thereby releasing the lock and enabling quick removal of the battery.

Description

Technical Field

[0001] This invention relates to the field of power battery assembly technology, and in particular to a modular power battery pack that can be quickly assembled and disassembled. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage equipment, and mobile power systems, the installation method, ease of maintenance, and safety and reliability of power battery packs, as core energy units, have become a key focus of the industry. Currently, most existing power battery packs are installed and fixed using methods such as bolt fixing, clip locking, or integral welding.

[0003] While traditional bolted connections are sturdy, the disassembly and assembly process is cumbersome, requiring tools and resulting in low maintenance efficiency. Frequent disassembly and assembly can also cause thread wear, affecting structural reliability. Snap-on structures are relatively convenient to operate, but their locking strength is limited, and they are prone to loosening under vibration, posing a safety hazard. Welded or fully encapsulated structures, on the other hand, make quick replacement almost impossible and result in high maintenance costs.

[0004] In addition, some existing quick-release battery structures have relatively simple locking mechanisms, which usually rely on single-point clamping or elastic element limiting. The clamping force is uneven, which can easily cause the battery to shake during use, affecting the battery connection stability and service life, and even causing safety problems.

[0005] Therefore, there is an urgent need for a modular power battery pack installation structure that is structurally sound, reliably lockable, and capable of automatic locking and quick unlocking, in order to improve battery replacement efficiency and safety. Summary of the Invention

[0006] In view of this, the purpose of this invention is to propose a modular power battery pack that can be quickly installed and disassembled, so as to solve the problems of cumbersome installation and disassembly operations, insufficient locking reliability and poor fixation stability of existing power battery packs.

[0007] To achieve the above objectives, the present invention provides a modular power battery pack that can be quickly assembled and disassembled, comprising:

[0008] The battery rack has a cavity for mounting batteries, and the cavity has through slots extending along the battery assembly direction on its left and right sides.

[0009] The locking assembly is respectively disposed in the through groove. The locking assembly includes a slide rod that is slidably disposed in a slide hole in the side wall of the through groove. The inner end of the slide rod is fixedly connected to a roller frame. The outer end of the slide rod is located outside the through groove, and a second spring is sleeved on the outer side of the slide rod. One end of the second spring abuts against the side wall of the through groove, and the other end abuts against the slide rod.

[0010] The roller frame is equipped with a roller assembly for forming rolling contact with the side wall of the battery.

[0011] The battery has a fixing groove on each side, and the fixing groove is provided in a corresponding manner to the roller assembly;

[0012] When the battery is placed into the receiving cavity from top to bottom, its sidewall contacts the roller assembly and pushes the roller frame and slide bar to move outward of the through groove, thus compressing the second spring. When the roller assembly aligns with the fixed groove, under the reset action of the second spring, the roller frame drives the roller assembly to move back into the receiving cavity and enter the fixed groove, thereby locking and positioning the battery.

[0013] The battery is equipped with an unlocking component on top, which can push the roller frame to move outward of the through groove, causing the roller assembly to disengage from the fixed groove, thereby releasing the battery from its locked state.

[0014] Furthermore, the roller assembly includes a second roller located in the middle of the roller frame, and a first roller respectively disposed on the upper and lower sides of the second roller. The first roller and the second roller together form a multi-point contact structure with the fixing groove.

[0015] Furthermore, both ends of the second roller are slidably mounted on a horizontally arranged optical rod via sliders, and the optical rod is fixed inside the roller frame;

[0016] A trapezoidal platform is also slidably mounted on the optical rod. The trapezoidal platform is fixedly connected to the slider, so that the roller two and the trapezoidal platform can move synchronously along the optical rod direction.

[0017] Furthermore, the trapezoidal platform is provided with external tensioning devices on its upper and lower sides, and these devices are arranged along the height direction of the roller assembly.

[0018] The external tensioning device is used to convert the movement of the trapezoidal platform into an opening motion of roller one in a direction away from roller two when the trapezoidal platform is displaced.

[0019] Furthermore, the external tensioning device includes a fixed sleeve fixedly mounted on the inner wall of the roller frame, and an L-shaped slide rod slidably mounted within the fixed sleeve.

[0020] One end of the L-shaped slide bar has a rounded chamfer structure that abuts against the trapezoidal platform, and the other end is rotatably connected to the corresponding roller through a rotating shaft, so that the displacement of the trapezoidal platform can be transmitted to the roller through the L-shaped slide bar.

[0021] Furthermore, the inner side of the fixing groove is provided with a flange along its length.

[0022] When the roller assembly enters the fixed groove, the flange restricts the position of the second roller, causing the second roller to move relative to the guide rod along the trapezoidal platform under the restricted state. This, in turn, pushes the first roller to open towards the inner wall of the fixed groove through the external tensioning device and forms a clamp.

[0023] Furthermore, the unlocking component is disposed within a device cavity formed on top of the battery, and a cover plate is detachably connected to the top of the device cavity to protect the unlocking component.

[0024] Furthermore, the unlocking component includes a rotatably mounted irregularly shaped disk within the device cavity, the irregularly shaped disk having an elliptical structure;

[0025] A rotating rod is fixedly connected to the top of the irregularly shaped disk. The rotating rod passes through the cover plate and forms a rotational engagement with the cover plate. A pull ring for manual operation is fixedly connected to the outer end of the rotating rod.

[0026] Furthermore, the unlocking component also includes a push rod that conforms to the outer periphery of the irregularly shaped disk, the push rod being arranged in a horizontal direction;

[0027] A limiting ring is fitted around the outside of the push rod, and the limiting ring is fixed to the inner wall of the equipment cavity to restrict the push rod to move only in a straight line in the horizontal direction.

[0028] One end of the push rod abuts against the irregularly shaped disk, and the other end contacts the force-bearing plate installed on the top of the roller frame.

[0029] The device cavity has symmetrical through holes on both sides, and the two sets of through holes correspond to the push rod, which can be moved outward through the through holes.

[0030] Furthermore, a support plate one is fixedly connected to the top of the limiting ring, and a support plate two is fixedly connected to the top of the push rod.

[0031] A spring three is connected between the first support plate and the second support plate. The spring three is used to apply an elastic force to the push rod in the direction of the irregular disk, so that the push rod always keeps in contact with the outer contour of the irregular disk.

[0032] This invention utilizes a locking and unlocking mechanism within the battery holder. After the battery is placed in the receiving cavity, a spring-reset mechanism automatically moves the roller assembly into the fixed slot for locking and positioning. Simultaneously, a linkage between the trapezoidal platform and the outward-opening device pushes the rollers open in the opposite direction, clamping them tightly against the inner wall of the fixed slot. When disassembly is required, simply pulling the pull ring rotates the shaped disc and pushes the push rod to move the roller holder outward, disengaging the roller assembly from the fixed slot and completing the unlocking operation. This allows for quick battery removal without tools, improving maintenance efficiency. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this invention 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the battery rack and the battery installation state.

[0035] Figure 2 This is a schematic diagram of the battery rack structure;

[0036] Figure 3 This is a schematic diagram of the battery structure;

[0037] Figure 4 This is a schematic diagram of the internal locking component structure of the battery;

[0038] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of A in the diagram;

[0039] Figure 6 This is a schematic diagram of the locking component structure;

[0040] Figure 7 This is a cross-sectional view of the internal expansion component of the locking assembly;

[0041] Figure 8 This is a schematic cross-sectional view of the inside of the fixing groove.

[0042] The diagram is marked as follows:

[0043] 1. Battery rack; 11. Through slot; 2. Battery; 21. Equipment cavity; 211. Cover plate; 22. Through hole; 23. Fixing slot; 231. Flange; 3. Locking assembly; 31. Slide rod; 32. Roller frame; 33. Roller group; 331. Roller one; 332. Roller two; 34. Smooth rod; 341. Slider; 342. Trapezoidal platform; 35. L-shaped slide rod; 351. Fixing sleeve; 352. Spring one; 36. Spring two; 4. Unlocking assembly; 41. Irregularly shaped disc; 42. Pull ring; 421. Rotating rod; 43. Push rod; 44. Limiting ring; 45. Support plate one; 46. Support plate two; 47. Spring three; 48. Force plate. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0045] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] like Figures 1 to 8 As shown, the present invention provides a modular power battery pack that can be quickly disassembled and assembled, including a battery rack 1 and a receiving cavity disposed in the battery rack 1. The receiving cavity is provided with through grooves 11 on the left and right sides respectively, and a locking component 3 is disposed in the through grooves 11. The battery 2 is provided with fixing grooves 23 on both sides respectively that cooperate with the locking component 3.

[0047] The locking assembly 3 includes a slide rod 31 that is slidably disposed in a slide hole opened in the side wall of the through groove 11. The inner end of the slide rod 31 is connected to a roller frame 32. A spring 36 is sleeved on the outer side of the slide rod 31. A roller assembly 33 is disposed inside the roller frame 32.

[0048] During use, the battery 2 is placed into the receiving cavity of the battery rack 1 from top to bottom. As the battery 2 gradually moves down, its two side walls come into contact with the roller group 33 in the locking assembly 3 and generate a lateral squeezing effect. This causes the roller frame 32 where the roller group 33 is located to drive the slide bar 31 to move outward along the through groove 11 and simultaneously compress the second spring 36, thereby guiding and buffering the downward movement of the battery 2 in the initial stage of installation.

[0049] When the battery 2 descends to the predetermined installation position, the roller assembly 33 is aligned with the fixing grooves 23 on both sides of the battery 2. Under the restoring force of the spring 2 36, the slide bar 31 and the roller frame 32 return to the inner side of the receiving cavity, so that the roller assembly 33 automatically enters the fixing groove 23, thereby completing the locking and positioning of the battery 2.

[0050] In an optional embodiment, the roller assembly 33 includes a second roller 332 disposed in the middle and first rollers 331 symmetrically disposed on the upper and lower sides. The second roller 332 is slidably disposed on the guide rod 34 via a slider 341. A trapezoidal platform 342 is slidably disposed on the guide rod 34, and the slider 341 is fixedly connected to the trapezoidal platform 342. An outward tensioning device is disposed on the upper and lower sides of the trapezoidal platform 342, and the outward tensioning device is rotatably connected to the corresponding first roller 331. The outward tensioning device includes a fixed sleeve 351 fixedly disposed on the inner wall of the roller frame 32, and an L-shaped slide rod 35 slidably disposed in the fixed sleeve 351. One end of the L-shaped slide rod 35 is provided with a rounded chamfer and abuts against the trapezoidal platform 342, and the other end is rotatably connected to the first roller 331.

[0051] When the roller assembly 33 enters the fixed groove 23, the flange 231 on the inner side of the fixed groove 23 limits the movement of the second roller 332, preventing it from moving further along the depth direction of the fixed groove 23. Under this constraint, the force exerted on the second roller 332 is transmitted to the trapezoidal platform 342 via the slider 341, causing the trapezoidal platform 342 to move along the direction of the guide rod 34. This movement further pushes the L-shaped slide rod 35 to slide in conjunction with the fixed sleeve 351, thereby causing the first rollers 331 on both the upper and lower sides to open in opposite directions and press against the inner wall of the fixed groove 23, forming a clamping and positioning state for the battery 2. This structure allows the roller assembly 33 to automatically adjust its clamping degree according to the assembly state, which helps improve the positioning stability of the battery 2 within the receiving cavity. Furthermore, the outer surface of roller 331 is covered with a thick, elastic anti-slip pad. The elastic deformation of the anti-slip pad itself can meet the width requirements of the fixing groove 23 within a certain range. Simultaneously, the anti-slip pad can absorb excess vibration, further reducing the impact of vibration or impact on the battery. A spring 352 connects the fixing sleeve 351 and the end of the L-shaped slide rod 3531 near the trapezoidal platform 342. The spring 352 drives the L-shaped slide rod 3531 to press tightly against the outer wall of the trapezoidal platform 342.

[0052] When it is necessary to remove battery 2, the roller assembly 33 is pushed outward by the unlocking component 4 located on top of battery 2. Specifically, the unlocking component 4 is located in the device cavity 21 on top of battery 2, and the top of device cavity 21 is provided with a removable cover plate 211. The irregularly shaped disk 41 is rotatably located in the center of the inner cavity of device cavity 21, and a rotating rod 421 is fixedly connected to its top. The rotating rod 421 passes through the cover plate 211 and forms a rotatable connection with the cover plate 211. A pull ring 42 is connected to the end of the rotating rod 421.

[0053] When the operator pulls the pull ring 42, the rotating rod 421 drives the elliptical irregular disk 41 to rotate 90° within the equipment cavity 21. The change in the outer contour of the irregular disk 41 acts on the push rod 43 that cooperates with it. A limiting ring 44 is sleeved on the outer side of the push rod 43, which constrains the movement direction of the push rod 43, so that the push rod 43 can only move in the horizontal direction. A support plate 45 is fixedly installed on the top of the limiting ring 44, and a support plate 46 is fixedly installed on the top of the push rod 43. A spring 47 connects the support plate 45 and the support plate 46. Under the elastic action of the spring 47, the push rod 43 always keeps one end tightly against the outer surface of the irregular disk 41.

[0054] As the shaped disc 41 rotates, the push rod 43 moves horizontally outward under the guidance of the limiting ring 44 and moves outward from the through hole 22. It also applies a pushing force to the force plate 48 at the top of the roller frame 32, causing the roller frame 32 to overcome the elasticity of the spring 352 and move outward from the through groove 11. When the shaped disc 41 rotates to 90°, the roller assembly 33 exits the fixed groove 23 as a whole. The roller 331 is released from the clamping state on the inner wall of the fixed groove 23, and the restriction on the battery 2 in the vertical direction is released, so that it can be taken out upward, realizing the quick disassembly of the battery 2.

[0055] Working principle: When battery 2 is placed into the receiving cavity along the assembly direction of battery holder 1, the side walls of battery 2 first contact the roller assembly 33 disposed in the through groove 11. The roller assembly 33 is integrally mounted on the roller frame 32, which forms a sliding fit with the side wall of the through groove 11 through the slide rod 31, and the slide rod 31 is sleeved with a second spring 36. As battery 2 continues to move downward, its side wall generates a lateral compressive force on the roller assembly 33, causing the slide rod 31 to drive the roller frame 32 to move outward and compress the second spring 36. Since the roller assembly 33 and the side wall of the battery are in rolling contact, the insertion friction resistance is effectively reduced, allowing battery 2 to smoothly enter the predetermined installation position.

[0056] When battery 2 descends to the position where its side wall fixing groove 23 is opposite to the roller assembly 33, under the reset action of spring 352, slide rod 31 drives roller frame 32 to move inward, and roller assembly 33 automatically enters the fixing groove 23, completing the initial locking. During this process, roller 332 in roller assembly 33 is first limited by the inner flange 231 of fixing groove 23, and its further inward movement is restricted.

[0057] Since roller 2 332 is slidably mounted on the guide rod 34 via slider 341, and slider 341 is fixedly connected to trapezoidal platform 342, when roller 2 332 is restricted by flange 231, it will drive trapezoidal platform 342 to generate relative displacement along guide rod 34. The displacement of trapezoidal platform 342 further acts on the outward expansion devices provided on its upper and lower sides, causing the L-shaped slide bar 35 in the outward expansion device to slide within fixed sleeve 351, thereby pushing roller 1 331, which is rotatably connected to it, to open outward.

[0058] During the aforementioned linkage process, roller 331 forms a symmetrical clamping state with the inner wall of the fixing groove 23, and together with roller 332, constitutes a multi-point rolling locking structure, effectively restricting the battery 2 in both the horizontal and vertical directions. This structure utilizes the wedge-shaped force transmission characteristics of the trapezoidal platform 342 to convert the axial displacement generated during the insertion of the battery 2 into a lateral clamping force, achieving an automatically enhanced locking effect during the assembly process, thereby significantly improving the fixing stability of the battery 2 under vibration or impact conditions.

[0059] When it is necessary to remove battery 2, the operator opens the cover 211 at the top of the equipment cavity 21 and pulls the pull ring 42 connected to the rotating rod 421, causing the rotating rod 421 to drive the shaped disk 41 to rotate. During the rotation, the outer circumference of the shaped disk 41 exerts a pushing force on the push rod 43, which is always in contact with its outer circumference. Since the push rod 43 is fitted with a limiting ring 44, its direction of movement is restricted to the horizontal direction. Therefore, the rotational motion of the shaped disk 41 is stably converted into the linear movement of the push rod 43.

[0060] During the outward movement of the push rod 43, the force plate 48 connected to it pushes the roller frame 32 to move outward as a whole, thereby overcoming the restoring force of the spring 352 and causing the roller assembly 33 to exit the fixed groove 23. At the same time, a spring 47 is connected between the support plate 45 fixed to the top of the limiting ring 44 and the support plate 46 fixed to the top of the push rod 43. Under the action of the spring 47, the push rod 43 always maintains a close fit with the outer periphery of the irregular disc 41, making the unlocking action continuous and smooth, and avoiding jamming or failure.

[0061] Once the roller assembly 33 is completely disengaged from the fixing groove 23, the battery 2 is no longer clamped on both sides, and the operator can easily remove the battery 2 along the original assembly direction to complete the unlocking process.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0063] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A modular power battery pack that can be quickly assembled and disassembled, characterized in that, include: A battery rack (1) has a cavity for installing batteries (2) inside. The cavity has through slots (11) extending along the battery assembly direction on the left and right sides. Locking assembly (3), the locking assembly (3) is respectively disposed in the through groove (11), the locking assembly (3) includes a slide rod (31) slidably disposed in the sliding hole of the side wall of the through groove (11), the inner end of the slide rod (31) is fixedly connected to a roller frame (32), the outer end of the slide rod (31) is located outside the through groove (11), and a second spring (36) is sleeved on the outer side of the slide rod (31), one end of the second spring (36) abuts against the side wall of the through groove (11), and the other end abuts against the slide rod (31); The roller frame (32) is provided with a roller assembly (33) for forming rolling contact with the side wall of the battery (2); The battery (2) is provided with fixing grooves (23) on both sides, and the fixing grooves (23) are provided in correspondence with the roller group (33); When the battery (2) is placed into the receiving cavity from top to bottom, its sidewall contacts the roller assembly (33) and pushes the roller frame (32) and slide bar (31) to move outward of the through groove (11), so that the second spring (36) is compressed; when the roller assembly (33) corresponds to the fixed groove (23), under the reset action of the second spring (36), the roller frame (32) drives the roller assembly (33) to move back to the inside of the receiving cavity and enter the fixed groove (23) to lock and position the battery (2); The battery (2) is provided with an unlocking component (4) on top. The unlocking component (4) can push the roller frame (32) to move outward of the through groove (11), so that the roller group (33) is disengaged from the fixed groove (23), thereby releasing the locking state of the battery (2).

2. The modular power battery pack with quick assembly and disassembly according to claim 1, characterized in that: The roller assembly (33) includes a second roller (332) located in the middle of the roller frame (32) and a first roller (331) respectively disposed on the upper and lower sides of the second roller (332). The first roller (331) and the second roller (332) together form a multi-point contact structure with the fixed groove (23).

3. The modular power battery pack with quick assembly and disassembly according to claim 2, characterized in that: The two ends of the roller two (332) are respectively slidably mounted on the horizontally arranged light rod (34) by sliders (341), and the light rod (34) is fixed inside the roller frame (32); A trapezoidal platform (342) is also slidably arranged on the light rod (34). The trapezoidal platform (342) is fixedly connected to the slider (341), so that the roller (332) and the trapezoidal platform (342) can move synchronously along the light rod (34).

4. The modular power battery pack with quick assembly and disassembly according to claim 3, characterized in that: The trapezoidal platform (342) is provided with an external tensioning device on its upper and lower sides, and the external tensioning device is arranged along the height direction of the roller group (33). The outward expansion device is used to convert the movement of the trapezoidal platform (342) into an opening motion of roller one (331) in a direction away from roller two (332) when the trapezoidal platform (342) is displaced.

5. The modular power battery pack with quick assembly and disassembly according to claim 4, characterized in that: The external tensioning device includes a fixed sleeve (351) fixedly mounted on the inner wall of the roller frame (32), and an L-shaped slide rod (35) slidably mounted in the fixed sleeve (351). One end of the L-shaped slide bar (35) is provided with a rounded chamfer structure that abuts against the trapezoidal platform (342), and the other end is rotatably connected to the corresponding roller (331) through a rotating shaft, so that the displacement of the trapezoidal platform (342) can be transmitted to the roller (331) through the L-shaped slide bar (35).

6. The modular power battery pack with quick assembly and disassembly according to claim 1, characterized in that: The inner side of the fixing groove (23) is provided with a flange (231) along its length direction. When the roller assembly (33) enters the fixed groove (23), the flange (231) restricts the position of the second roller (332), causing the second roller (332) to drive the trapezoidal platform (342) to move relative to the guide rod (34) under the restricted state, thereby pushing the first roller (331) to open towards the inner wall of the fixed groove (23) through the external tensioning device and forming a clamp.

7. The modular power battery pack with quick assembly and disassembly according to claim 1, characterized in that: The unlocking component (4) is located inside the device cavity (21) formed on the top of the battery (2). A cover plate (211) is installed on the top of the device cavity (21) by a detachable connection to protect the unlocking component (4).

8. The modular power battery pack with quick assembly and disassembly according to claim 7, characterized in that: The unlocking component (4) includes a shaped disk (41) that is rotatably installed in the device cavity (21), the shaped disk (41) having an elliptical structure; The top of the irregular disc (41) is fixedly connected to a rotating rod (421), which passes through the cover plate (211) and forms a rotational engagement with the cover plate (211). The outer end of the rotating rod (421) is fixedly connected to a pull ring (42) for manual operation.

9. The modular power battery pack with quick assembly and disassembly according to claim 1, characterized in that: The unlocking component (4) also includes a push rod (43) that fits against the outer periphery of the irregular disk (41), and the push rod (43) is arranged in the horizontal direction; A limiting ring (44) is sleeved on the outside of the push rod (43). The limiting ring (44) is fixed on the inner wall of the equipment cavity (21) to restrict the push rod (43) to move only in a straight line in the horizontal direction. One end of the push rod (43) abuts against the irregularly shaped disk (41), and the other end contacts the force-bearing plate (48) provided on the top of the roller frame (32). The two sides of the equipment cavity (21) are symmetrically provided with through holes (22), and the two sets of through holes (22) correspond to the push rod (43). The push rod (43) can be moved outward through the through holes (22).

10. The modular power battery pack with quick assembly and disassembly according to claim 9, characterized in that: The top of the limiting ring (44) is fixedly connected to a support plate one (45), and the top of the push rod (43) is fixedly connected to a support plate two (46). A spring three (47) is connected between the first support plate (45) and the second support plate (46). The spring three (47) is used to apply an elastic force to the push rod (43) toward the irregular disk (41), so that the push rod (43) always keeps in contact with the outer contour of the irregular disk (41).

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