An assembled return box for a new energy battery

Abstract

The present invention discloses an assembled return box for new energy batteries in the field of battery chassis manufacturing technology, including a lower housing, an upper housing and a plurality of bolts. The lower housing and the upper housing are fixedly connected by bolts. The upper housing includes a skirt, and the skirt is fixedly connected to the upper end of the lower housing by bolts; a main body is arranged on the inner wall of the skirt, and the main body is provided with an assembly mechanism. The main body can be inseparably fixedly connected to the skirt through the assembly mechanism; the present invention assembles the skirt and the lower housing at the production source, and then assembles the main body and the skirt by means of an assembled structure, so that the assembly quality of the box is more stable; in this process, through the subsequent assembly of the main body and the skirt, the skirt and the lower housing can be assembled in advance uniformly while keeping the box in an open state, and the one-time assembly method between the skirt and the lower housing makes the assembly strength between the main body and the skirt higher.

Description

Technical Field

[0001] The present invention relates to the technical field of battery chassis manufacturing, and particularly to an assembled return chassis for new energy batteries. Background Art

[0002] With the popularization of the application of new energy vehicles, the usage amount of the corresponding chassis for placing batteries is also increasing day by day. In order to meet the rapid assembly of the battery and the chassis, and reduce the installation limitations of the battery and chassis assembly, so that the battery and the chassis can be quickly assembled in non-professional places, the demand for assembled modular chassis has also increased correspondingly.

[0003] For traditional assembled chassis, if it can be disassembled and reassembled repeatedly after assembly, the firmness after assembly is proportional to the assembly difficulty; and as one of the components of an electric vehicle, considering the occurrence of faults such as battery aging, it is inevitable that the chassis needs to have the requirement of disassembly and assembly; this makes that in order to ensure the normal driving of the electric vehicle in various environments, the firmness after assembly of the chassis needs to be guaranteed to a certain extent. Correspondingly, the assembly difficulty of the chassis increases, so that the production efficiency will be greatly limited during the large-scale assembly of the battery and the chassis. Summary of the Invention

[0004] The purpose of the present invention is to provide an assembled return chassis for new energy batteries, so as to solve the problem proposed in the above background art that for traditional assembled chassis, if it can be disassembled and reassembled repeatedly after assembly, the firmness after assembly is proportional to the assembly difficulty; and as one of the components of an electric vehicle, considering the occurrence of faults such as battery aging, it is inevitable that the chassis needs to have the requirement of disassembly and assembly; this makes that in order to ensure the normal driving of the electric vehicle in various environments, the firmness after assembly of the chassis needs to be guaranteed to a certain extent. Correspondingly, the assembly difficulty of the chassis increases, so that the production efficiency will be greatly limited during the large-scale assembly of the battery and the chassis.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An assembled return chassis for new energy batteries, including a lower shell, an upper shell and multiple groups of bolts. The lower shell and the upper shell are fixedly connected by bolts. The upper shell includes a skirt, and the skirt is fixedly connected to the upper end of the lower shell by bolts; a main body is arranged on the inner wall of the skirt, and an assembly mechanism is arranged on the main body. The main body can be fixedly connected to the skirt inseparably through the assembly mechanism.

[0006] Furthermore, the assembly mechanism includes a plurality of bumps arranged in an array on the side wall of the main body. Grooves are provided on the inner wall of the skirt corresponding to the positions of the bumps. The bumps can be spliced and engaged with the corresponding grooves. Jacks are provided in the grooves. Plug blocks are slidably connected to the bumps, and the plug blocks can be inserted into the jacks. A control mechanism is provided at the upper end of the main body, and the control mechanism is used to control the plug blocks to lock the jacks.

[0007] Furthermore, the control mechanism includes a triggering mechanism. Locking mechanisms are provided at the ends of the plug blocks away from the corresponding jacks. The locking mechanisms are used to lock the plug blocks and the main body after the plug blocks are inserted into the corresponding jacks. The triggering mechanism is used to drive the plug blocks to insert into the corresponding jacks.

[0008] Furthermore, the triggering mechanism includes a first installation groove and a second installation groove respectively provided at the upper and lower ends of the main body. Third installation grooves are longitudinally provided on both sides of the first installation groove at the upper end of the main body. First through holes are provided horizontally in the bumps, and the first through holes are communicated with the third installation grooves on the same side. The plug blocks are slidably connected horizontally in the corresponding first through holes. A pressing plate is provided in the second installation groove, and a triggering plate is provided in the first installation groove. An elastic connecting rod passing through the main body is fixedly connected between the pressing plate and the triggering plate. During the process of the main body moving downward close to the lower housing and being spliced into the skirt, the pressing plate can be squeezed by the battery in the lower housing. Second through holes communicating with the third installation grooves are horizontally provided on the left and right side walls of the first installation groove. Transmission components are provided in the second through holes. One end of the transmission component close to the first installation groove is rotatably connected to a first connecting rod, and the other end of the first connecting rod is rotatably connected to the side wall of the triggering plate. One end of the transmission component close to the third installation groove is connected to a traction plate, and the traction plate is drivingly connected to a driving component. The driving component is used to drive the plug blocks to insert into the jacks. A protection mechanism is provided in the first installation groove, and the protection mechanism is used to prevent the battery in the lower housing from being pressed for a long time.

[0009] Further, the locking mechanism includes an avoidance groove formed at one end of the insertion block close to the third installation groove. Two positioning blocks symmetrically arranged with respect to the horizontal middle plane of the insertion block are vertically and slidably connected to one end of the insertion block close to the third installation groove. First chamfers are provided on the adjacent ends of the positioning blocks and on the side close to the third installation groove. Guide plates are fixedly connected to the side walls of the third installation groove at the first through holes. A trigger block is horizontally slidably connected to the guide plates. Second chamfers are provided on the upper and lower sides of the end of the trigger block. The trigger block can squeeze the positioning blocks away from the avoidance groove through the first chamfers and the second chamfers. Positioning grooves are provided on the upper and lower inner walls of the first through hole on the moving trajectories of the positioning blocks. A push plate is vertically and elastically slidably connected to the upper positioning groove. An elastic telescopic rod is fixedly connected to one end of the trigger block in the third installation groove. The elastic telescopic rod is fixedly connected to a connecting plate. A chute is vertically formed through the trigger block at the longitudinal position of the positioning block. A connecting block is vertically slidably connected to the chute. The upper and lower ends of the connecting block can be spliced with the ends of the positioning blocks with the first chamfers. The connecting plate is in transmission connection with the driving assembly, and the driving assembly is used to longitudinally push the connecting plate.

[0010] Further, the transmission assembly includes a slider slidably connected to the second through hole. One end of the slider is fixedly connected to a traction plate. A stranded block is vertically slidably connected to the other end of the slider. The stranded block is hinged to a slide plate. The slide plate is slidably connected to the second through hole. The end of the slide plate is rotatably connected to the end of the first connecting rod.

[0011] Further, the driving assembly includes two second connecting rods fixedly connected to the front and rear side walls of the traction plate at the end far from the first installation groove. Installation plates are horizontally and fixedly connected to the lower ends of the connecting plates. Slide shafts are fixedly connected to the lower ends of the installation plates. Third connecting rods are provided at the lower ends of the installation plates. The slide shafts are slidably connected to the third connecting rods along the axial direction of the third connecting rods. The middle positions of the third connecting rods are rotatably connected to the bottom of the third installation groove. The ends of the third connecting rods are longitudinally slidably connected to the upper ends of the corresponding second connecting rods.

[0012] Further, the protection mechanism includes a plurality of limiting plates horizontally slidably connected to the corners of the first installation groove. Wedge angles are provided at the upper ends of the sides of the limiting plates close to the trigger plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention assembles the skirt and the lower housing at the production source, and then assembles the main body and the skirt using an assembled structure, making the assembly quality of the chassis more stable. In this process, through the subsequent assembly method of the main body and the skirt, the skirt and the lower housing can be assembled in advance uniformly while keeping the chassis in an open state. Moreover, the one-time assembly method between the skirt and the lower housing makes the assembly strength between the main body and the skirt higher.

[0015] 2. The present invention triggers through an elastic member, enabling the connection block and the positioning block to complete the locking action, and the locking effect of the connection block and the positioning block is independent of the elastic member. This makes it possible that even if the elastic member fails subsequently, the connection block and the positioning block can still maintain the locking effect intact, making the entire locking system more stable.

[0016] 3. By using a shorter sliding plate, the acting length of the torque generated when the first connecting rod pulls is reduced, thereby reducing the friction between the sliding plate and the second through hole, and preventing the phenomenon that the friction force is too large for the transmission component to slide laterally due to the excessive extrusion force on the inner wall of the second through hole caused by the excessive length of the direct acting member of the first connecting rod under the lever action. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the half-sectional structure of the main body and the structure thereon;

[0019] Figure 3 is Figure 2 an enlarged schematic diagram of the structure at A in

[0020] Figure 4 is Figure 2 a schematic diagram of the front-sectional structure located at the trigger block;

[0021] Figure 5 is Figure 4 an enlarged schematic diagram of the structure at B in

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 11 Lower housing, 12 Bolt, 13 Skirt, 14 Main body, 21 Bump, 22 Groove, 23 Jack, 24 Insert block, 41 First installation groove, 42 Second installation groove, 43 Third installation groove, 44 First through hole, 45 Pressure plate, 46 Trigger plate, 47 Elastic connecting rod, 48 Second through hole, 49 First connecting rod, 410 Traction plate, 51 Avoidance groove, 52 Positioning block, 53 First chamfer, 54 Guide plate, 55 Trigger block, 56 Second chamfer, 57 Positioning groove, 58 Push plate, 59 Elastic telescopic rod, 510 Connecting plate, 511 Connection block, 512 Slide groove, 61 Slide block, 62 Twisted block, 63 Sliding plate, 71 Second connecting rod, 72 Mounting plate, 73 Third connecting rod, 74 Slide shaft, 81 Limiting plate, 82 Wedge angle. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0025] Please refer to Figures 1-5 , the present invention provides a technical solution: an assembled return box for a new energy battery, including a lower housing 11, an upper housing, and a plurality of bolts 12. The lower housing 11 and the upper housing are fixedly connected by the bolts 12. It is characterized in that: the upper housing includes a skirt 13, and the skirt 13 is fixedly connected to the upper end of the lower housing 11 by the bolts 12; an assembly mechanism is provided on the inner wall of the skirt 13, and the main body 14 is provided with an assembly mechanism, and the main body 14 can be inseparably fixedly connected to the skirt 13 through the assembly mechanism.

[0026] Generally, for parts that need to be used in large quantities, in order to meet their production efficiency and related equipment and personnel management, different parts mostly have different production bases. And for some non-core technology parts, most are supplied by manufacturers specializing in the production of such parts. This makes it that, in most cases, the chassis needs to be transported independently. During this process, the lower housing 11 and the upper housing of the chassis are separated. And in addition to professional large assembly workshops, the final arrival points of the chassis also include many repair shops or small workshops where the equipment and tools are not perfect. In order to meet the assembly efficiency and assembly quality of the chassis, the present invention provides the following assembly method: First, at the production source, the skirt 13 is fixedly connected to the upper end of the lower housing 11 by the bolts 12 through professional assembly equipment (installing the bolts 12 through professional assembly equipment at the production source has higher assembly efficiency compared to subsequent assembly by various receiving parties with uneven production qualifications, and has higher quality control over the installation of the skirt 13 and the lower housing 11, and can effectively avoid poor assembly of the skirt 13 and the lower housing 11). Then, during the assembly process at the final arrival point, the battery block is installed in the lower housing 11, and finally the main body 14 is snapped onto the inner wall of the skirt 13, and at the same time, the assembly mechanism on the main body 14 is used to make the main body 14 and the skirt 13 no longer separate (adopting an irreversible assembly means, first improving the installation efficiency of the chassis through assembled installation, and secondly, this assembly method adopts an irreversible scheme, greatly improving its assembly strength, and further enabling the installed chassis to effectively fix the internal battery under the condition that the electric vehicle runs on different road conditions for a long time). In this way, a set of assembled battery and chassis is obtained; and when it is necessary to replace and repair the battery inside the chassis subsequently, the chassis is opened by unscrewing the bolts 12 to maintain the battery.

[0027] The present invention assembles the skirt 13 and the lower housing 11 at the production source, and then assembles the main body 14 and the skirt 13 by using an assembled structure, making the assembly quality of the chassis more stable. In this process, through the subsequent assembly of the main body 14 and the skirt 13, the skirt 13 and the lower housing 11 can be assembled in advance uniformly while keeping the chassis in an open state, and the one-time assembly method between the skirt 13 and the lower housing 11 makes the assembly strength between the main body 14 and the skirt 13 higher.

[0028] As a further solution of the present invention, the assembly mechanism includes a plurality of bumps 21 arranged in an array on the side wall of the main body 14. Grooves 22 are respectively formed in the inner wall of the skirt 13 at positions corresponding to the bumps 21. The bumps 21 can be spliced and engaged with the corresponding grooves 22. Insertion holes 23 are formed in the grooves 22. Plug blocks 24 are slidably connected to the bumps 21, and the plug blocks 24 can be inserted into the insertion holes 23. A control mechanism is arranged at the upper end of the main body 14, and the control mechanism is used to control the plug blocks 24 to lock the insertion holes 23.

[0029] During operation, the main body 14 is vertically lowered to complete the engagement through the bumps 21 and the grooves 22. Then, the plug blocks 24 on the bumps 21 are inserted into the insertion holes 23 to completely lock the bumps 21 and the grooves 22. Finally, the control mechanism is used to control the plug blocks 24 to lock the insertion holes 23, so that during the subsequent installation of the chassis on the electric vehicle for use, the situation that the main body 14 falls off due to component aging and repeated bumps will not occur. Further, the stability during use is improved.

[0030] As a further solution of the present invention, the control mechanism includes a triggering mechanism. Locking mechanisms are respectively arranged at one ends of the plug blocks 24 away from the corresponding insertion holes 23. The locking mechanisms are used to lock the plug blocks 24 and the main body 14 after the plug blocks 24 are inserted into the corresponding insertion holes 23. The triggering mechanism is used to drive the plug blocks 24 to insert into the corresponding insertion holes 23.

[0031] As a further solution of the present invention, the triggering mechanism includes a first installation groove 41 and a second installation groove 42 respectively opened at the upper and lower ends of the main body 14. Third installation grooves 43 are longitudinally opened on both left and right sides of the upper end of the main body 14. First through holes 44 are transversely opened in the convex blocks 21, and the first through holes 44 communicate with the third installation grooves 43 on the same side. Insert blocks 24 are transversely slidably connected in the corresponding first through holes 44. A pressing plate 45 is arranged in the second installation groove 42, and a triggering plate 46 is arranged in the first installation groove 41. An elastic connecting rod 47 passing through the main body 14 is fixedly connected between the pressing plate 45 and the triggering plate 46. During the process that the main body 14 moves downward close to the lower housing 11 and is spliced into the skirt 13, the pressing plate 45 can be pressed against the battery in the lower housing 11. Second through holes 48 communicating with the third installation grooves 43 are transversely opened on both left and right side walls of the first installation groove 41. Transmission components are arranged in the second through holes 48. One end of the transmission component close to the first installation groove 41 is rotatably connected with a first connecting rod 49, and the other end of the first connecting rod 49 is rotatably connected with the side wall of the triggering plate 46. One end of the transmission component close to the third installation groove 43 is connected with a traction plate 410, and the traction plate 410 is drivingly connected with a driving component, and the driving component is used to drive the insert block 24 to insert into the insertion hole 23. A protection mechanism is arranged in the first installation groove 41, and the protection mechanism is used to prevent the battery in the lower housing 11 from being pressed for a long time.

[0032] During operation, after installing electrical components such as a battery in the lower housing 11, the main body 14 is spliced into the skirt 13. During this process, the main body 14 gradually moves downward close to the lower housing 11. Correspondingly, the pressing plate 45 is pressed against the battery in the lower housing 11 (according to actual conditions, a hard object for pressing against the pressing plate 45 can be arranged in the lower housing 11, so that after the main body 14 moves downward and is spliced in place, the pressing plate 45 can be pressed into the second installation groove 42). During this process, the pressing plate 45 moves upward relative to the main body 14 under pressure. Correspondingly, the triggering plate 46 moves upward. Further, during the upward movement of the triggering plate 46, the triggering plate 46 pulls the transmission component into the first installation groove 41 through the first connecting rod 49, and the transmission component pulls the traction plate 410 into the second through hole 48, so that the traction plate 410 provides a traction force for the driving component to drive the insert block 24 to insert into the insertion hole 23.

[0033] As a further solution of the present invention, the locking mechanism includes an avoidance groove 51 formed at one end of the insertion block 24 close to the third installation groove 43. Two positioning blocks 52 symmetrically arranged with respect to the horizontal middle plane of the insertion block 24 are respectively vertically slidably connected to one end of the insertion block 24 close to the third installation groove 43. First chamfers 53 are provided on the adjacent ends of the positioning blocks 52 and on the side close to the third installation groove 43. Guide plates 54 are fixedly connected to the side walls of the third installation groove 43 at the first through holes 44. A trigger block 55 is horizontally slidably connected to the guide plates 54. Second chamfers 56 are formed on the upper and lower sides of the end of the trigger block 55. The trigger block 55 can squeeze the positioning blocks 52 away from the avoidance groove 51 through the first chamfers 53 and the second chamfers 56. Positioning grooves 57 are formed on the upper and lower inner walls of the first through hole 44 on the moving tracks of the positioning blocks 52. A push plate 58 is vertically elastically slidably connected in the upper positioning groove 57. One end of the trigger block 55 in the third installation groove 43 is fixedly connected with an elastic telescopic rod 59. The elastic telescopic rod 59 is fixedly connected with a connecting plate 510. A sliding groove 512 is vertically formed through the trigger block 55 at the longitudinal position of the positioning block 52. A connecting block 511 is vertically slidably connected to the sliding groove 512. The upper and lower ends of the connecting block 511 can be spliced with the ends of the positioning blocks 52 with the first chamfers 53. The connecting plate 510 is in transmission connection with a driving component, and the driving component is used to longitudinally push the connecting plate 510.

[0034] During operation, as the main body 14 engages with the inner wall of the engaging skirt 13, the insertion block 24 and the insertion hole 23 are gradually aligned. At the same time, the trigger plate 46 provides a pulling force for the driving assembly through the pulling plate 410 to drive the insertion block 24 to insert into the insertion hole 23. The driving assembly squeezes the connecting plate 510 towards the first through hole 44, and further squeezes the connecting plate 510 through the elastic telescopic rod 59 to squeeze the trigger block 55 towards the first through hole 44. During this process, under the squeezing of the trigger block 55, the insertion block 24 in the first through hole 44 has a tendency to move towards the insertion hole 23. At this time, since the insertion block 24 and the insertion hole 23 are not completely aligned, the insertion block 24 is blocked by the inner wall of the groove 22 and cannot move towards the insertion hole 23. Further, the trigger block 55 cannot move towards the first through hole 44, causing the elastic telescopic rod 59 to be compressed until the main body 14 is completely engaged with the engaging skirt 13 and the insertion block 24 and the insertion hole 23 are completely aligned. Under the elastic force of the compressed elastic telescopic rod 59, the trigger block 55 presses the insertion block 24 into the insertion hole 23 by squeezing the positioning block 52. During this process, the second chamfer 56 at the end of the trigger block 55 will be squeezed against the first chamfer 53 on the positioning block 52, causing the positioning block 52 to have a tendency to squeeze against the upper and lower inner walls of the first through hole 44 until the insertion block 24 is completely pressed into the insertion hole 23. The corresponding two positioning blocks 52 are respectively aligned with the upper and lower positioning grooves 57. Under the squeezing of the trigger block 55, the two positioning blocks 52 are respectively inserted into the upper and lower positioning grooves 57. Then, the trigger block 55 continues to insert into the avoidance groove 51 under the elastic force of the elastic telescopic rod 59 until the trigger block 55 is completely inserted into the avoidance groove 51. Correspondingly, the two positioning blocks 52 are aligned with the sliding groove 512. At this time, under the push of the push plate 58 in the upper positioning groove 57, the upper positioning block 52 is squeezed downward, causing the two positioning blocks 52 and the connecting block 511 in the sliding groove 512 to complete splicing. (Refer to Figure 5It can be seen that the further connecting block 511 will sink into the lower positioning groove 57, and at the same time, a part of the upper positioning block 52 will enter the sliding groove 512. In this way, under the cooperation of the connecting block 511 and the positioning block 52, the positions of the trigger block 55 and the insertion block 24 are restricted, so that the insertion block 24 and the main body 14 are completely locked, and the main body 14 and the skirt 13 are completely locked. (Since there is a first chamfer 53 at the end of the positioning block 52, in order to make the connection between the connecting block 511 and the positioning block 52 complete, depressions for accommodating the first chamfer 53 need to be provided at both the upper and lower ends of the connecting block 511. Further, the total height after the connection of the connecting block 511 and the two positioning blocks 52 is less than the sum of the individual heights of the connecting block 511 and the two positioning blocks 52. Further, it can be seen that unless there is no overlapping part between the connecting block 511 and the two positioning blocks 52 in the vertical direction, otherwise, a part of the positioning block 52 is always located in the sliding groove 512 to keep the entire locking system in a locked state; at the same time, since the connecting block 511 and the two positioning blocks 52 remain in a spliced state, the inertial forces in the vertical direction acting on the connecting block 511 and the two positioning blocks 52 are the same, so that the connecting block 511 and the two positioning blocks 52 cannot be separated).

[0035] In the present invention, the elastic member plays a triggering role to complete the locking action of the connecting block 511 and the positioning block 52, and the locking effect of the connecting block 511 and the positioning block 52 has nothing to do with the elastic member. This makes it possible that even if the elastic member fails later, the connecting block 511 and the positioning block 52 can still maintain the locking effect well, making the entire locking system more stable.

[0036] As a further solution of the present invention, the transmission assembly includes a slider 61, the slider 61 is slidably connected to the second through hole 48, one end of the slider 61 is fixedly connected to the traction plate 410, a stranded block 62 is vertically slidably connected to the other end of the slider 61, the stranded block 62 is hinged to a sliding plate 63, the sliding plate 63 is slidably connected to the second through hole 48, and the end of the sliding plate 63 is rotatably connected to the end of the first link 49.

[0037] During operation, the slider 61 is pulled by pulling the sliding plate 63 through the first link 49; in this way, the acting length of the torque generated when the first link 49 pulls is reduced by the shorter sliding plate 63, thereby reducing the friction between the sliding plate 63 and the second through hole 48, and preventing the phenomenon that the acting member cannot slide horizontally due to the excessive extrusion force on the inner wall of the second through hole 48 caused by the excessive acting length of the first link 49 under the lever action, resulting in excessive friction.

[0038] As a further solution of the present invention, the driving assembly includes two second connecting rods 71 fixedly connected to the front and rear side walls of the traction plate 410 away from one end of the first installation groove 41. The lower ends of the connecting plates 510 are horizontally and fixedly connected with mounting plates 72. The lower ends of the mounting plates 72 are fixedly connected with sliding shafts 74. Third connecting rods 73 are arranged at the lower ends of the mounting plates 72. The sliding shafts 74 are slidably connected with the third connecting rods 73 along the axial direction of the third connecting rods 73. The middle positions of the third connecting rods 73 are rotatably connected to the bottom of the third installation groove 43. The ends of the third connecting rods 73 are longitudinally slidably connected to the upper ends of the corresponding second connecting rods 71.

[0039] During operation, as the traction plate 410 is pulled towards the first installation groove 41, the second connecting rods 71 on the front and rear sides of the corresponding traction plate 410 are pulled towards the first installation groove 41, causing the end of the third connecting rod 73 slidably connected to the second connecting rod 71 to move towards the first installation groove 41. Further, the third connecting rod 73 rotates about the rotation connection point between the third connecting rod 73 and the bottom of the third installation groove 43, causing the end of the third connecting rod 73 slidably connected to the sliding shaft 74 to move away from the first installation groove 41. Further, the third connecting rod 73 drives the sliding shaft 74 to move away from the first installation groove 41, and the sliding shaft 74 drives the connecting plate 510 to move away from the first installation groove 41, thereby completing the driving of the trigger block 55.

[0040] As a further solution of the present invention, the protection mechanism includes a plurality of limiting plates 81 laterally slidably connected to the corners of the first installation groove 41. Wedge angles 82 are provided at the upper ends of the limiting plates 81 close to the trigger plate 46.

[0041] During operation, when the main body 14 is fully engaged, there is a certain gap between the corresponding trigger plate 46 and the bottom of the first installation groove 41. At the same time, there is a certain extrusion force between the pressing plate 45 and the components in the lower housing 11. At this time, the limiting plate 81 is pushed, so that the wedge angle 82 is inserted into the gap between the trigger plate 46 and the bottom of the first installation groove 41. Further, the limiting plate 81 is pushed into the gap between the trigger plate 46 and the bottom of the first installation groove 41. During this process, the elastic connecting rod 47 is stretched, and at the same time, the elastic connecting rod 47 will provide an upward pulling force to the pressing plate 45, thereby eliminating the extrusion force between the pressing plate 45 and the components in the lower housing 11.

Claims

1. An assembled return box for new energy batteries, comprising a lower shell (11), an upper shell and a plurality of sets of bolts (12), wherein the lower shell (11) and the upper shell are fixedly connected by bolts (12), characterized in that: The upper shell comprises a skirt (13), and the skirt (13) is fixedly connected to the upper end of the lower shell (11) by means of bolts (12); a main body (14) is arranged on the inner wall of the skirt (13), and the main body (14) is provided with an assembly mechanism, and the main body (14) can be inseparably fixedly connected to the skirt (13) by means of the assembly mechanism; The assembly mechanism comprises a plurality of protrusions (21) distributed in an array on the side wall of the main body (14); the inner wall of the skirt (13) is provided with grooves (22) at positions corresponding to the protrusions (21); the protrusions (21) can be spliced ​​and engaged with the corresponding grooves (22); the grooves (22) are provided with plug holes (23); the protrusions (21) are slidably connected with plug blocks (24); the plug blocks (24) can be inserted into the plug holes (23); a control mechanism is provided at the upper end of the main body (14); the control mechanism is used to control the plug blocks (24) to lock the plug holes (23); The control mechanism comprises a trigger mechanism, and a locking mechanism is provided at one end of the plug block (24) away from the corresponding plug hole (23), and the locking mechanism is used to lock the plug block (24) and the main body (14) after the plug block (24) is inserted into the corresponding plug hole (23); the trigger mechanism is used to drive the plug block (24) to be inserted into the corresponding plug hole (23); The trigger mechanism comprises a first mounting groove (41) and a second mounting groove (42) respectively provided at the upper and lower ends of the main body (14); the upper end of the main body (14) is longitudinally provided with a third mounting groove (43) on both the left and right sides of the first mounting groove (41); the protrusions (21) are transversely provided with a first through hole (44); the first through holes (44) are communicated with the third mounting groove (43) on the same side; the plug block (24) is transversely slidably connected in the corresponding first through hole (44); a pressure plate (45) is provided in the second mounting groove (42); a trigger plate (46) is provided in the first mounting groove (41); an elastic connecting rod (47) penetrating the main body (14) is fixedly connected between the pressure plate (45) and the trigger plate (46); the main body (14) is downwardly close to the lower shell (11) and is spliced ​​to the skirt (13) During the process, the pressure plate (45) can be squeezed with the battery in the lower shell (11); the left and right side walls of the first installation groove (41) are both transversely provided with second through holes (48) connected to the third installation groove (43); a transmission assembly is arranged in the second through holes (48); one end of the transmission assembly close to the first installation groove (41) is rotatably connected to the first connecting rod (49); the other end of the first connecting rod (49) is rotatably connected to the side wall of the trigger plate (46); one end of the transmission assembly close to the third installation groove (43) is connected to a traction plate (410); the traction plate (410) is rotatably connected to a driving assembly, and the driving assembly is used to drive the plug block (24) to insert into the jack (23); a protection mechanism is arranged in the first installation groove (41), and the protection mechanism is used to prevent the battery in the lower shell (11) from being subjected to long-term pressure; The locking mechanism comprises an avoidance groove (51) provided at one end of the plug block (24) close to the third installation groove (43); two positioning blocks (52) are vertically slidably connected to one end of the plug block (24) close to the third installation groove (43) and are symmetrically arranged relative to the horizontal mid-plane of the plug block (24); adjacent ends of the positioning blocks (52) and one side close to the third installation groove (43) are provided with a first chamfer (53); the side wall of the third installation groove (43) is fixedly connected with a guide plate (54) at the first through hole (44); the guide plate (54) is laterally slidably connected with a trigger block (55); the upper and lower sides of the end of the trigger block (55) are provided with a second chamfer (56); the trigger block (55) can squeeze the positioning block (52) in a direction away from the avoidance groove (51) through the first chamfer (53) and the second chamfer (56); The upper and lower inner walls of the first through hole (44) are both provided with positioning grooves (57) on the moving track of the positioning block (52); a push plate (58) is vertically elastically slidably connected in the upper positioning groove (57); one end of the trigger block (55) in the third mounting groove (43) is fixedly connected with an elastic telescopic rod (59); the elastic telescopic rod (59) is fixedly connected with a connecting plate (510); the trigger block (55) is located at a longitudinal position of the positioning block (52) and vertically penetrates with a slide groove (512); the slide groove (512) is vertically slidably connected with a connecting block (511); the upper and lower ends of the connecting block (511) can be spliced ​​with one end of the positioning block (52) with a first chamfer (53); the connecting plate (510) is transmission-connected with a driving assembly, and the driving assembly is used to push the connecting plate (510) longitudinally; The transmission assembly comprises a slider (61), the slider (61) is slidably connected to the second through hole (48), one end of the slider (61) is fixedly connected to the traction plate (410), the other end of the slider (61) is vertically slidably connected to a twisting block (62), the twisting block (62) is hinged to a slide plate (63), the slide plate (63) is slidably connected to the second through hole (48), and the end of the slide plate (63) is rotatably connected to the end of the first connecting rod (49); The driving assembly comprises two second connecting rods (71) fixedly connected to the front and rear side walls of the traction plate (410) at one end away from the first mounting groove (41); the lower end of the connecting plate (510) is horizontally fixedly connected to the mounting plate (72); the lower end of the mounting plate (72) is fixedly connected to the sliding shaft (74); the lower end of the mounting plate (72) is provided with a third connecting rod (73); the sliding shaft (74) is slidably connected to the third connecting rod (73) along the axial direction of the third connecting rod (73); the middle position of the third connecting rod (73) is rotatably connected to the bottom of the third mounting groove (43); and the ends of the third connecting rod (73) are longitudinally slidably connected to the upper ends of the corresponding second connecting rods (71); The protection mechanism comprises a plurality of limit plates (81) which are laterally slidably connected to the corners of the first installation slot (41), and a wedge angle (82) is formed on the upper end of one side of the limit plates (81) close to the trigger plate (46).

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