A fixing tray for a new energy vehicle battery pack

Abstract

The present invention relates to the technical field of automotive battery pack trays, and particularly relates to a fixing tray for a new energy vehicle battery pack; it includes a frame; the frame is composed of four side frames in an isosceles trapezoid structure, and the four side frames are butt-jointed and combined through a limiting mechanism and then welded and fixed. A U-shaped frame is fixedly installed at the rear end of the side frame located at the rear side. The U-shaped frame and the lower end of the frame are jointly welded and fixed with a bottom plate. A fixing mechanism for fixing the battery pack is arranged inside the frame; the fixing mechanism provided by the present invention performs primary reinforcement on the frame formed by the combination of the side frames, and then performs secondary reinforcement on the frame formed by the combination of the side frames through a locking portion to improve the structural strength of the frame formed by the combination of the side frames. The battery pack is squeezed and fixed through the limiting mechanism, and the limiting mechanism is kept in a fixed state for the battery pack through the locking portion to improve the stability of the battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive battery pack trays, and particularly to a fixing tray for a new energy vehicle battery pack. Background Art

[0002] The battery pack fixing tray is an important part of an electric vehicle battery system. It not only bears the battery modules, but also protects the batteries from the external environment and ensures the stability of the batteries during vehicle driving. The battery pack fixing tray includes a frame, a bottom plate and a cover plate, and partitions for separating the battery packs are installed in the frame.

[0003] The frame is mainly formed by butt - joining four side frames into a rectangular structure and then welding and fixing them. The bottom plate is also installed at the lower end of the frame by welding and fixing, while the cover plate is fixed to the frame by bolts for easy disassembly and maintenance of the battery pack. In this way, when a certain part is damaged, only the corresponding side frame needs to be replaced instead of the whole frame, reducing the maintenance cost and time, and the thickness and strength of different parts can be designed according to actual stress analysis, which helps to achieve overall weight reduction without sacrificing the structural safety.

[0004] However, the current battery pack trays have the following problems in use: 1. The existing frame is only fixed by welding. When subjected to external force impact during subsequent use, stress concentrates at the welded joints, resulting in problems such as weld cracking or frame deformation, thus weakening the overall strength and stiffness of the structure and increasing the possibility of accidents; 2. Usually, when the cover plate is fixed to the frame, the upper part of the battery pack is stuck in the groove on the cover plate to limit the movement of the battery pack. However, relying only on the cooperation between the cover plate and the battery pack to limit the movement, when encountering vibration or impact, the battery pack is prone to shaking, causing wear of the battery pack and damage to the battery pack pole pieces, and thus affecting the service life of the battery pack. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide a fixing tray for a new energy vehicle battery pack to solve the above - mentioned technical problems.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solutions: The embodiments of the present application provide a fixing tray for a new energy vehicle battery pack, including a frame; the frame is composed of four side frames in an isosceles trapezoid structure, and the four side frames are butt - joined and combined through a limiting mechanism and then welded and fixed. A U - shaped frame is fixedly installed at the rear end of the side frame located at the rear. The U - shaped frame and the lower end of the frame are jointly welded and fixed with a bottom plate, and a fixing mechanism for fixing the battery pack is arranged in the frame.

[0007] The described limiting mechanism includes limiting blocks. Limiting blocks are fixedly installed on the left side wall of the rear side frame, the rear side wall of the right side frame, and the left and right side walls of the front side frame. A kidney-shaped groove is jointly opened at the upper end of the frame and the upper end of the corresponding limiting block. Limiting grooves that cooperate with the corresponding limiting blocks are provided on the three frames located on the left, rear, and right sides.

[0008] The described fixing mechanism includes a partition plate. A partition plate is longitudinally installed within the frame. Baffles are fixedly installed evenly from front to back on both the left and right sides of the partition plate. The rectangular space formed by the bottom plate, the baffles, the partition plate, and the frame is used to place the battery pack, and the baffles are fixedly welded to the frame. An extrusion part for squeezing and fixing the battery pack is provided within the rectangular space.

[0009] The described frame, U-shaped frame, partition plate, and baffle are all of cavity structures.

[0010] A locking part is provided on the frame for strengthening the connection strength between the frames and for maintaining the fixation of the extrusion part on the battery pack by restricting the movement of the extrusion part.

[0011] As a preferred solution, the extrusion part includes extrusion blocks. One extrusion block is provided at each of the four corner positions within the rectangular space formed by the bottom plate, the baffles, the partition plate, and the frame. The extrusion blocks are of Y-shaped structures. The straight segments of the extrusion blocks respectively slide through the corresponding frame and partition plate. A first driving part for driving the corresponding extrusion block to move is jointly provided within the left side frame, the right side frame, and the partition plate. A second driving part for driving the corresponding extrusion block to move is provided within the front side frame. A third driving part for driving the corresponding extrusion block to move is provided within the rear side frame.

[0012] As a preferred solution, the locking part includes a connecting plate. A connecting plate is provided within the kidney-shaped groove. A rotating shaft that slides through the corresponding frame is fixedly installed at the lower end of the connecting plate. A round shaft is also fixedly installed at the lower end of the connecting plate. A sleeve is slidably sleeved on the round shaft. The lower end of the sleeve sequentially slides through the corresponding limiting block into the corresponding frame. A first compression spring is fixedly installed between the lower end of the round shaft and the inner wall of the sleeve. A round groove is opened on the outer wall of the round shaft. A plug rod is slidably installed within the round groove through a second compression spring. A through hole that cooperates with the plug rod is opened on the sleeve. Positioning components are provided at positions on the frame corresponding to the rotating shafts one by one. Each group of positioning components consists of two positioning holes that are symmetric about the corresponding rotating shaft and penetrate the corresponding frame. One of the positioning holes is within the kidney-shaped groove. A positioning column that cooperates with the positioning hole is fixedly installed at the lower end of the connecting plate.

[0013] As a preferred solution, the No. 1 driving member includes a rectangular plate, and rectangular plates are evenly fixedly installed in the left frame and the right frame from front to back. A No. 1 shaft rod slides through the rectangular plates in the same frame together, and a No. 2 shaft rod is arranged in the partition plate. Both ends of the No. 2 shaft rod slide through the partition plate to the corresponding frame. A No. 1 guide column is fixedly installed at the lower end of the straight section of the extrusion block, and fixed plates corresponding to the baffles are fixedly installed on the No. 1 shaft rod and the No. 2 shaft rod. A No. 1 square plate is fixedly installed at the rear end of the fixed plate and below the No. 1 shaft rod. An inclined groove is opened on the No. 1 square plate, which is inclined from the front to the back to the side away from the corresponding No. 1 guide column, and the No. 1 guide column slides through the corresponding inclined groove.

[0014] As a preferred solution, the No. 2 driving member includes a pushing plate, which is movably installed in the frame on the front side, a pillar that slides through the corresponding frame is fixedly installed at the front end of the pushing plate, and the rear end of the pushing plate is in contact with the No. 1 shaft rod and the No. 2 shaft rod, and a limiting hole that cooperates with the corresponding two sleeves is provided at the upper end of the pushing plate, and a No. 2 square plate that corresponds to the extrusion block in the front frame is fixedly installed at the lower end of the pushing plate, and a No. 2 waist groove is provided on the No. 2 square plate, and a No. 2 guide column that slides through the No. 2 waist groove is fixedly installed at the lower end of the extrusion block in the front frame.

[0015] As a preferred solution, the No. 3 driving member includes a connecting plate, a connecting plate located below the rotating shaft is movably installed in the frame on the rear side, a No. 3 square plate corresponding to the extrusion block in the frame on the rear side is fixedly installed at the front end of the connecting plate, a No. 3 waist groove is opened on the No. 3 square plate, a No. 3 guide column sliding through the No. 3 waist groove is fixedly installed at the lower end of the extrusion block in the frame on the rear side, a connecting rod is rotatably installed at the rear end of the connecting plate through a torsion spring rod, and the rear end of the No. 2 shaft rod is in conflict with the connecting rod.

[0016] As a preferred solution, the three outer walls on the left side, right side and front side of the frame and the three outer walls on the left side, right side and rear side of the C-shaped frame are fixedly installed with a number of ear seats, the upper end of the frame and the upper end of the C-shaped frame are provided with a number of screw holes, and the lower end of the frame is provided with circular holes for installing corresponding guide pillars No. 1, No. 2 and No. 3.

[0017] As a preferred solution, a shaft column is fixedly mounted on one end of the baffle away from the partition plate, and one end of the shaft column away from the corresponding baffle slides through the corresponding frame.

[0018] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: First, the fixing mechanism provided in the present invention reinforces the frame of the frame combination once, and then reinforces the frame of the frame combination for a second time through the locking part, so as to improve the structural strength of the frame of the frame combination, and the battery pack can be squeezed and fixed by the limiting mechanism, and the locking part enables the limiting mechanism to keep the battery pack in a fixed state, so as to improve the stability of the battery pack.

[0019] Second, the fixing mechanism provided by the present invention limits the movement between the frames through the cooperation of the limiting blocks and the limiting grooves, so as to reinforce the frame formed by the combination of the frames once. Then, the sleeve is penetrated through the upper parts of the corresponding limiting blocks and the frames to limit the movement of the corresponding two frames, thereby fixing the frame formed by the combination of the frames a second time. Furthermore, the structural strength of the frame is improved through double reinforcement. In addition, the cooperation of the limiting blocks and the limiting grooves facilitates the butt joint of the frames. By pulling out the sleeve to abut against the corresponding frame, the installation of the bottom plate can be positioned, thereby improving the installation efficiency of the battery pack tray.

[0020] Third, the limiting mechanism provided by the present invention drives the corresponding extrusion blocks to extrude and fix the battery pack through the first driving member, the second driving member and the third driving member. After the sleeve penetrates through the upper parts of the limiting blocks and the frames, it will be inserted into the corresponding limiting holes to limit the movement of the pushing plate, so that the extrusion blocks keep fixing the battery pack, thereby ensuring the stability of the battery pack and extending its service life.

[0021] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0024] Figure 2 It is Figure 1 a second perspective structural schematic diagram of

[0025] Figure 3 It is a structural schematic diagram of the limiting mechanism of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the fixing mechanism of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the extrusion part of the present invention.

[0028] Figure 6 It is Figure 5 an enlarged structural view of part A in

[0029] Figure 7 It is Figure 5 an enlarged structural view of part B in

[0030] Figure 8 is Figure 5 An enlarged view of the structure at position C in

[0031] Figure 9 is Figure 5 An enlarged view of the structure at position D in

[0032] Figure 10 A cross-sectional view of the locking part of the present invention.

[0033] Figure 11 A partial cross-sectional view of the third driving member of the present invention.

[0034] Reference numerals: 10, frame; 11, U-shaped frame; 12, ear seat; 13, bottom plate; 14, screw hole; 15, round hole; 2, limiting mechanism; 20, limiting block; 21, limiting groove; 3, fixing mechanism; 30, partition plate; 31, baffle; 310, shaft column; 4, extrusion part; 40, extrusion block; 41, first driving member; 410, rectangular plate; 411, first shaft rod; 412, second shaft rod; 413, first guide post; 414, fixing plate; 415, first square plate; 416, inclined groove; 42, second driving member; 420, pushing plate; 421, support column; 422, limiting hole; 423, second square plate; 424, second waist groove; 425, second guide post; 43, third driving member; 430, connecting plate; 431, third square plate; 432, third waist groove; 433, third guide post; 434, connecting rod; 5, locking part; 50, connecting plate; 51, rotating shaft; 52, round shaft; 53, sleeve; 54, second compression spring; 55, inserting rod; 56, through hole; 57, positioning hole; 58, positioning column. Detailed Description of the Invention

[0035] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0036] As Figure 1 and Figure 2 shown, a fixing tray for a new energy vehicle battery pack includes a frame 10; the frame 10 is composed of four side frames in an isosceles trapezoid structure, and the four side frames are butted and combined through a limiting mechanism 2 and then welded and fixed. A U-shaped frame 11 is fixedly installed at the rear end of the rear side frame, and a bottom plate 13 is fixedly welded together with the lower ends of the U-shaped frame 11 and the frame 10. A fixing mechanism 3 for fixing the battery pack is arranged inside the frame 10.

[0037] As Figure 1 and Figure 3 shown, the limiting mechanism 2 includes limiting blocks 20. Limiting blocks 20 are fixedly installed on the left side wall of the rear side frame, the rear side wall of the right side frame, and the left and right side walls of the front side frame. Waist-shaped grooves are jointly opened at the upper ends of the frame and the corresponding limiting blocks 20. Limiting grooves 21 that cooperate with the corresponding limiting blocks 20 are provided on the three frames on the left, rear, and right sides.

[0038] As Figure 1 , Figure 4 and Figure 5 shown, the fixing mechanism 3 includes a partition plate 30. A partition plate 30 is longitudinally installed in the frame 10. Baffle plates 31 are fixedly installed on both the left and right sides of the partition plate 30 from front to back at equal intervals. The rectangular space formed by the bottom plate 13, the baffle plates 31, the partition plate 30, and the frame 10 is used to place battery packs, and the baffle plates 31 are fixedly welded to the frame 10. Pressing parts 4 for pressing and fixing the battery packs are provided in the rectangular space; the frame, the U-shaped frame 11, the partition plate 30, and the baffle plates 31 are all of cavity structures.

[0039] As Figure 1 and Figure 4 shown, a locking part 5 is provided on the frame 10 for strengthening the connection strength between the frames and for maintaining the fixing of the pressing part 4 to the battery pack by restricting the movement of the pressing part 4.

[0040] As Figure 1 , Figure 5 and Figure 6 shown, a shaft column 310 is fixedly installed at one end of the baffle plate 31 away from the partition plate 30, and the end of the shaft column 310 away from the corresponding baffle plate 31 slides through to the inside of the corresponding frame.

[0041] During specific operation, first, the operator installs the pressing part 4 onto the corresponding frame 10 and partition plate 30, then docks the rear frame with the left frame first, and makes the limiting block 20 on the rear frame snap into the limiting groove 21 on the left frame to enhance the stability after docking of the rear frame and the left frame. After that, the right frame and the front frame are installed in sequence. The limiting block 20 on the right frame snaps into the limiting groove 21 on the rear frame, and the two limiting blocks 20 on the front frame respectively snap into the limiting grooves 21 on the left and right frames. Then, welding processing is performed on the joints of the assembled frame 10, so as to improve the strength of the frame 10 through the cooperation of the limiting blocks 20 and the limiting grooves 21 and the way of welded connection.

[0042] Place the bottom plate 13 at the corresponding positions of the U-shaped frame 11 and the frame 10, and fix it to the U-shaped frame 11 and the frame 10 by welding. Then, place the battery pack into the rectangular space formed by the bottom plate 13, the baffle 31, the partition plate 30 and the frame 10. After all placements are completed, squeeze and fix the battery pack through the squeezing part 4, and limit the movement of the squeezing part 4 and strengthen the connection strength between the frames through the locking part 5. After that, install the control components and other parts for controlling the charging and discharging of the battery pack in the U-shaped frame 11 and the frame 10. Then, fix the existing cover plate to the upper ends of the U-shaped frame 11 and the frame 10 by bolts, and limit the battery pack again through the grooves on the cover plate, so as to ensure the stability of the battery pack.

[0043] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, the squeezing part 4 includes squeezing blocks 40. One squeezing block 40 is arranged at each of the four corner positions in the rectangular space formed by the bottom plate 13, the baffle 31, the partition plate 30 and the frame 10. The squeezing block 40 has a Y-shaped structure. The straight sections of the squeezing block 40 respectively slide through the corresponding frame 10 and partition plate 30. A first driving part 41 for driving the corresponding squeezing block 40 to move is jointly arranged in the left side frame, the right side frame and the partition plate 30. A second driving part 42 for driving the corresponding squeezing block 40 to move is arranged in the front side frame. A third driving part 43 for driving the corresponding squeezing block 40 to move is arranged in the rear side frame.

[0044] As Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 10 shown, the locking part 5 includes a connecting plate 50. The connecting plate 50 is arranged in the waist-shaped groove. A rotating shaft 51 that slides through the corresponding frame is fixedly installed at the lower end of the connecting plate 50. A round shaft 52 is also fixedly installed at the lower end of the connecting plate 50. A sleeve 53 is slidably sleeved on the round shaft 52. The lower end of the sleeve 53 sequentially slides through the corresponding limiting block 20 into the corresponding frame. A first compression spring is fixedly installed between the lower end of the round shaft 52 and the inner wall of the sleeve 53. A circular groove is formed on the outer wall of the round shaft 52. A plug rod 55 is slidably installed in the circular groove through a second compression spring 54. A through hole 56 that cooperates with the plug rod 55 is formed on the sleeve 53. Positioning components are arranged at the positions on the frame 10 corresponding to the rotating shafts 51 one by one. Each group of positioning components consists of two positioning holes 57 that are symmetric about the corresponding rotating shaft 51 and penetrate through the corresponding frame. One of the positioning holes 57 is located in the waist-shaped groove. A positioning column 58 that cooperates with the positioning hole 57 is fixedly installed at the lower end of the connecting plate 50.

[0045] During specific operation, manually pull the two front connecting plates 50 and the right connecting plate 50 upward to separate the sleeve 53 from the corresponding frame and the limiting block 20. Then rotate the connecting plate 50 so that the sleeve 53 abuts against the outer wall of the corresponding frame. Next, press the insertion rod 55 to disengage it from the through hole 56. After that, the sleeve 53 moves out beyond the lower end face of the frame under the action of the first compression spring. Then move the connecting plate 50 downward, and the positioning post 58 is inserted into the corresponding positioning hole 57 to limit the rotation of the connecting plate 50, so that the sleeve 53 remains in a state of fitting with the side wall of the corresponding frame. Then place the bottom plate 13 on the frame 10 and position it through the sleeve 53. After that, fix the bottom plate 13 to the frame 10 and the U-shaped frame 11 by welding.

[0046] It should be noted that the insertion rod 55 is slidably installed in the circular groove through the second compression spring 54. When the insertion rod 55 is not pressed, the second compression spring 54 is in an extended state, so that the insertion rod 55 extends into the through hole 56 on the sleeve 53. When the sleeve 53 abuts against the outer wall of the corresponding frame, manually press the insertion rod 55 by hand or use a tool (such as a thin rod with a diameter smaller than the through hole 56). When the insertion rod 55 completely disengages from the through hole 56, the first compression spring will automatically push and squeeze the sleeve 53 to generate relative sliding with the round shaft 52 (so there is no need to deliberately control the distance of pushing the insertion rod 55 manually), thereby making the end of the sleeve 53 far from the round shaft 52 exceed the end face that will abut against the bottom plate 13 of the frame 10. When it is necessary to reset the sleeve 53, manually push and squeeze the sleeve 53 in the direction close to the round shaft 52 until the end of the sleeve 53 abuts against the connecting plate 50. At this time, the positions of the insertion rod 55 and the through hole 56 correspond, and under the elastic force of the second compression spring 54, the insertion rod 55 is inserted back into the through hole 56 again.

[0047] It should also be noted that when installing the bottom plate 13, the frame 10 can be turned over up and down first, so that the lower end face of the frame 10 is on the upper side. At this time, the end of the sleeve 53 far from the round shaft 52 faces upward, so there is no need to support the frame 10 through the first compression spring. Of course, the frame 10 can also be padded with a cushion block in advance to avoid directly supporting the frame 10 through the sleeve 53.

[0048] Place the battery pack into the rectangular space formed by the bottom plate 13, the frame, the partition plate 30 and the baffle 31. After all are placed, manually drive the extrusion block 40 to squeeze and fix the battery pack through the first driving member 41, the second driving member 42 and the third driving member 43. Then manually press the sleeve 53 to move the insertion rod 55 to the position of the through hole 56, and then make the insertion rod 55 insert into the through hole 56 under the action of the second compression spring 54 to shorten the distance between the lower end of the sleeve 53 and the connecting plate 50. After that, rotate the connecting plate 50 to move the sleeve 53 directly above the corresponding limiting block 20, and then move the connecting plate 50 downward so that the sleeve 53 sequentially passes through the limiting block 20 and the upper part of the frame and then cooperates with the extrusion part 4 to keep the extrusion part 4 squeezing and fixing the battery pack.

[0049] As Figure 1 , Figure 4 , Figure 5 and Figure 6 shown, the first driving member 41 includes a rectangular plate 410. The rectangular plates 410 are uniformly and fixedly installed from front to back inside the left border and the right border. A first shaft rod 411 is slidably penetrated through the rectangular plates 410 in the same border together. A second shaft rod 412 is arranged inside the partition plate 30. Both ends of the second shaft rod 412 are slidably penetrated through the partition plate 30 to the corresponding border. First guide posts 413 are fixedly installed at the lower ends of the straight line segments of the extrusion blocks 40. Fixed plates 414 corresponding to the baffle plates 31 one by one are fixedly installed on both the first shaft rod 411 and the second shaft rod 412. A first square plate 415 is fixedly installed at the rear end of the fixed plate 414 and below the first shaft rod 411. An inclined slot 416 that inclines from front to back and away from the corresponding first guide post 413 is formed on the first square plate 415, and the first guide post 413 is slidably penetrated through the corresponding inclined slot 416.

[0050] As Figure 1 , Figure 2 , Figure 5 , Figure 8 and Figure 10 shown, the second driving member 42 includes a pushing plate 420. The pushing plate 420 is movably installed inside the front border. A support column 421 that is slidably penetrated through the corresponding border is fixedly installed at the front end of the pushing plate 420. The rear end of the pushing plate 420 abuts against the first shaft rod 411 and the second shaft rod 412. A limiting hole 422 that cooperates with the corresponding two sleeves 53 is formed at the upper end of the pushing plate 420. Second square plates 423 corresponding to the extrusion blocks 40 inside the front border one by one are fixedly installed at the lower end of the pushing plate 420. A second waist slot 424 is formed on the second square plate 423. Second guide posts 425 that are slidably penetrated through the second waist slot 424 are fixedly installed at the lower ends of the extrusion blocks 40 inside the front border.

[0051] As Figure 5 , Figure 9 and Figure 11 shown, the third driving member 43 includes a connecting plate 430. The connecting plate 430 is movably installed inside the rear border and below the rotating shaft 51. Third square plates 431 corresponding to the extrusion blocks 40 inside the rear border one by one are fixedly installed at the front end of the connecting plate 430. A third waist slot 432 is formed on the third square plate 431. Third guide posts 433 that are slidably penetrated through the third waist slot 432 are fixedly installed at the lower ends of the extrusion blocks 40 inside the rear border. A connecting rod 434 is rotatably installed at the rear end of the connecting plate 430 through a torsion spring rod. The rear end of the second shaft rod 412 abuts against the connecting rod 434.

[0052] As Figure 1 , Figure 2 ,Figure 4 , Figure 6 , Figure 8 and Figure 9 As shown in Figure 4 , Figure 6 , Figure 8 and Figure 9 , a number of ear seats 12 are fixedly installed on the three outer side walls on the left, right and front sides of the frame 10 and the three outer side walls on the left, right and rear sides of the U-shaped frame 11. A number of screw holes 14 are provided at the upper ends of the frame 10 and the U-shaped frame 11. A circular hole 15 for installing the corresponding first guide post 413, second guide post 425 and third guide post 433 is provided at the lower end of the frame 10.

[0053] During specific operation, after the battery pack is placed, an operator pushes the pushing plate 420 backward through the support column 421. The pushing plate 420 drives the second square plate 423 to move backward synchronously. The second square plate 423 drives the corresponding extrusion block 40 to extrude the corresponding battery pack through the cooperation of the second waist slot 424 and the second guide post 425. The movement of the pushing plate 420 also contacts the front ends of the first shaft rod 411 and the second shaft rod 412, so as to push the first shaft rod 411 and the second shaft rod 412 backward, making the rear ends of the first shaft rod 411 and the second shaft rod 412 contact the inner wall of the rear side frame. The movement of the first shaft rod 411 and the second shaft rod 412 drives the first square plate 415 to move backward through the fixing plate 414. The first square plate 415 drives the corresponding extrusion block 40 to extrude the battery pack through the cooperation of the inclined slot 416 and the first guide post 413. In addition, the movement of the second shaft rod 412 also contacts the connecting rod 434, so as to push the rear end of the connecting rod 434 to rotate downward. The connecting rod 434 pushes the connecting plate 430 to move forward. The connecting plate 430 drives the third square plate 431 to move forward. The third square plate 431 drives the corresponding extrusion block 40 to extrude the battery pack through the cooperation of the third waist slot 432 and the third guide post 433. Then, the sleeve 53 is inserted into the corresponding limiting block 20 and the upper part of the frame and then inserted into the corresponding limiting hole 422 to limit the movement of the pushing plate 420, so that the extrusion block 40 keeps extruding the battery pack, thereby restricting the movement of the battery pack through the extrusion of the extrusion block 40, and further ensuring the stability of the battery pack.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0055] In addition, the terms "first", "second", "No. 1", and "No. 2" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "No. 1", or "No. 2" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0056] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A fixing tray for a new energy vehicle battery pack, comprising a frame; characterized in that: The described frame is composed of four borders in an isosceles trapezoid structure, and the four borders are butted and combined through a limiting mechanism and then welded and fixed. A U-shaped frame is fixedly installed at the rear end of the rear border. The bottom plate is welded and fixed together with the lower ends of the U-shaped frame and the frame. A fixing mechanism for fixing the battery pack is arranged inside the frame; where: The described limiting mechanism includes limiting blocks. Limiting blocks are fixedly installed on the left side wall of the rear border, the rear side wall of the right border, and the left and right side walls of the front border. A waist-shaped groove is jointly opened at the upper ends of the border and the corresponding limiting blocks. Limiting grooves that cooperate with the corresponding limiting blocks are arranged on the three borders on the left, rear, and right sides; The described fixing mechanism includes a partition plate. The partition plate is longitudinally installed inside the frame. Baffles are fixedly installed on both the left and right sides of the partition plate from front to back at equal intervals. The rectangular space formed by the bottom plate, the baffle, the partition plate, and the frame is used to place the battery pack, and the baffle is welded and fixed to the frame. An extrusion part for extruding and fixing the battery pack is arranged inside the rectangular space; The border, the U-shaped frame, the partition plate, and the baffle are all hollow structures; A locking part is arranged on the frame for strengthening the connection strength between the borders and for keeping the extrusion part fixed to the battery pack by restricting the movement of the extrusion part; The described locking part includes a connecting plate. The connecting plate is arranged inside the waist-shaped groove. A rotating shaft that slidably penetrates the corresponding border is fixedly installed at the lower end of the connecting plate. A round shaft is also fixedly installed at the lower end of the connecting plate. A sleeve is slidably sleeved on the round shaft. The lower end of the sleeve sequentially slidably penetrates the corresponding limiting block into the corresponding border. A first compression spring is fixedly installed between the lower end of the round shaft and the inner wall of the sleeve. A circular groove is opened on the outer wall of the round shaft. A plug rod is slidably installed in the circular groove through a second compression spring. A through hole that cooperates with the plug rod is opened on the sleeve. Positioning components are arranged at positions on the frame corresponding to the rotating shafts one by one. Each group of positioning components is composed of two positioning holes that are symmetric about the corresponding rotating shaft and penetrate the corresponding border. One of the positioning holes is inside the waist-shaped groove. A positioning column that cooperates with the positioning hole is fixedly installed at the lower end of the connecting plate.

2. The fixed tray for a new energy vehicle battery pack according to claim 1, characterized in that: The described extrusion part includes extrusion blocks. One extrusion block is arranged at each of the four corner positions inside the rectangular space formed by the bottom plate, the baffle, the partition plate, and the frame. The extrusion block is in a Y-shaped structure. The straight sections of the extrusion block respectively slidably penetrate into the corresponding frame and partition plate. A first driving part for driving the corresponding extrusion block to move is jointly arranged inside the left border, the right border, and the partition plate. A second driving part for driving the corresponding extrusion block to move is arranged inside the front border. A third driving part for driving the corresponding extrusion block to move is arranged inside the rear border.

3. The fixed tray for a new energy vehicle battery pack according to claim 2, characterized in that: The first driving member described above includes a rectangular plate. Rectangular plates are uniformly and fixedly installed from front to back inside both the left border and the right border. A first shaft rod slidably penetrates through the rectangular plates within the same border. A second shaft rod is arranged inside the partition plate, and both ends of the second shaft rod slidably penetrate through the partition plate to the corresponding border. First guide posts are fixedly installed at the lower ends of the straight segments of the extrusion blocks. Fixed plates corresponding to the baffles one by one are fixedly installed on both the first shaft rod and the second shaft rod. A first square plate is fixedly installed at the rear end of the fixed plate and below the first shaft rod. An inclined slot that slopes away from the corresponding first guide post from front to back is formed on the first square plate, and the first guide post slidably penetrates through the corresponding inclined slot.

4. The fixed tray for a new energy vehicle battery pack according to claim 3, wherein: The second driving member described above includes a pushing plate. The pushing plate is movably installed inside the border at the front side. A support column that slidably penetrates through the corresponding border is fixedly installed at the front end of the pushing plate. The rear end of the pushing plate abuts against the first shaft rod and the second shaft rod. A limiting hole that cooperates with the corresponding two sleeves is formed at the upper end of the pushing plate. A second square plate corresponding to the extrusion blocks inside the front border one by one is fixedly installed at the lower end of the pushing plate. A second waist slot is formed on the second square plate. Second guide posts that slidably penetrate through the second waist slot are fixedly installed at the lower ends of the extrusion blocks inside the front border.

5. The fixed tray for a new energy vehicle battery pack according to claim 4, characterized in that: The third driving member described above includes a connecting plate. The connecting plate is movably installed inside the border at the rear side and below the rotating shaft. A third square plate corresponding to the extrusion blocks inside the rear border one by one is fixedly installed at the front end of the connecting plate. A third waist slot is formed on the third square plate. Third guide posts that slidably penetrate through the third waist slot are fixedly installed at the lower ends of the extrusion blocks inside the rear border. A connecting rod is rotatably installed at the rear end of the connecting plate through a torsion spring rod, and the rear end of the second shaft rod abuts against the connecting rod.

6. The fixed tray for a new energy vehicle battery pack according to claim 5, characterized in that: A number of ear seats are fixedly installed on the three outer side walls on the left, right, and front sides of the frame and the three outer side walls on the left, right, and rear sides of the U-shaped frame. A number of screw holes are formed at the upper ends of the frame and the U-shaped frame. Circular holes for installing the corresponding first guide posts, second guide posts, and third guide posts are formed at the lower end of the frame.

7. The fixed tray for a new energy vehicle battery pack according to claim 1, characterized in that: A shaft column is fixedly installed at one end of the baffle away from the partition plate, and the end of the shaft column away from the corresponding baffle slidably penetrates into the corresponding border.

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