Pouch battery module case protection structure

Abstract

The application discloses a soft package battery module box protection structure and relates to the technical field of module batteries. The soft package battery module box protection structure comprises a box body capable of containing multiple soft package batteries, multiple parallelly-arranged side plates are arranged in the box body, and spaces capable of containing the soft package batteries are formed between two adjacent side plates. The distance between the side plates is adjustable. When the distance between the side plates is reduced to the limit, the side plates can be attached to the surface of the soft package batteries, so that the multiple soft package batteries are equidistantly arranged in the box body. Multiple parallelly-arranged side plates are arranged in the box body, the opposite sides of two adjacent side plates form spaces capable of containing the soft package batteries, the stability of the batteries is improved, the extrusion phenomenon between the batteries is effectively reduced, and the safety of the entire soft package battery module during movement is improved. The distance between the multiple side plates is adjustable, so that the soft package battery placing operation is facilitated, the portability during the installation process of the soft package batteries is improved, and the installation efficiency of the soft package batteries is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery boxes, and in particular to a protective structure for a soft-pack battery module box. Background Art

[0002] Soft-pack batteries are flexible batteries encapsulated with aluminum-plastic composite film. Also known as soft-pack cells, they are a type of lithium-ion battery packaging. Their core feature is the use of aluminum-plastic composite film as the outer shell. This design allows for greater flexibility and customizability. Soft-pack batteries are favored in the market for their high energy density, lightweight portability, and flexible layout. However, they also have drawbacks, such as complex manufacturing processes and poor product consistency.

[0003] Soft-pack batteries offer higher energy density, meaning they can store more energy within the same volume or weight. This is particularly important for mobile devices and electric vehicles, which are striving for longer battery life. While there are risks of electrolyte leakage and combustion and explosion, the safety of soft-pack batteries can be significantly improved by incorporating efficient battery thermal management systems. Soft-pack batteries typically have a long cycle life, meaning they maintain good performance after multiple charge and discharge cycles.

[0004] Soft-pack batteries are widely used in portable electronic devices such as smartphones and tablets, providing a portable and safe power solution for these devices. With the development of new energy vehicles, soft-pack batteries have also become an important component of new energy vehicle battery packs, especially in electric vehicles that pursue lightweight and high energy density.

[0005] In the existing soft-pack battery module box, multiple battery cells need to be connected in series during the assembly process. In order to maintain the stability of the battery cells, a protective plate needs to be installed to separate and fix the battery cells. The protective plate is mostly a single plastic plate structure with weak structural strength. In the process of installing the battery cells, it is mostly necessary to manually press it on the surface of the battery cells, and the installation speed is slow. The soft-pack battery module after packaging has weak structural strength. When used in new energy vehicles, if it is subjected to vibration, collision and accidents, it is easy to cause damage to the battery cells in the soft-pack battery module. Therefore, the present invention provides a soft-pack battery module box protection structure to meet the needs. Summary of the Invention

[0006] In response to the above problems, the present invention provides a soft-pack battery module box protection structure.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a protective structure for a soft-pack battery module case, comprising a case body capable of accommodating multiple soft-pack batteries, the case body being provided with multiple parallel side panels, with spaces for accommodating the soft-pack batteries formed between adjacent side panels. The spacing between the side panels is adjustable; when the spacing is minimized, the side panels adhere to the surface of the soft-pack batteries, allowing the multiple soft-pack batteries to be evenly spaced within the case body.

[0008] The first and second side panels are each equipped with a first and second protective bracket. The outer sides of the first and second protective brackets are connected to the side walls of the box body via a primary protective unit. Secondary protective units are located between the first and second protective brackets and the side panels. When the spacing between the side panels is adjusted, the first protective bracket, the primary protective unit connected to the first protective bracket, and the secondary protective unit can all be adjusted to leave space for installing soft-pack batteries.

[0009] Furthermore, both ends of the side panels are provided with limit bars pressed on the ends of the soft-pack batteries, and the bottom ends of the limit bars are provided with guide blocks that can move synchronously with the limit bars.

[0010] Each of the two adjacent guide blocks is connected by a common connecting rod. This connecting rod is equipped with a movable sleeve embedded in the front guide block. A positioning sleeve mounted on the rear guide block is also fixed to the connecting rod. The movable and positioning sleeves are connected by a return spring. The bottom end of the side panel at the rear end is fixed to the bottom plate of the box body. When the side panel at the front end moves toward the side panel at the rear end, the movable sleeve embedded in the guide block below it moves along the connecting rod, squeezing the return spring toward the positioning sleeve until the rear side panel moves.

[0011] Furthermore, a driving bar is provided on the first protective support, the driving bar extends to the outside of the box body, and a rack is provided on the driving bar.

[0012] A guide gear meshing with the rack is provided outside the box body through a bearing seat, and a hand wheel that can rotate synchronously with the guide gear is provided below the guide gear. When the guide gear meshes with the rack and moves, the drive bar, the first protective support and the side plate at the head end move synchronously.

[0013] Furthermore, a accommodating block is provided at the bottom end of the handwheel, and a locking block is embedded in the accommodating block to intercept the rotation of the accommodating block and the handwheel. The locking block is connected to the storage tray through a rotating shaft, and a limit frame is provided outside the box body to accommodate the storage tray.

[0014] The bottom end of the storage tray is connected to the limit frame through a support spring. Guide joints are provided on both sides of the storage tray, and channels that can accommodate the movement of the guide joints are provided on both sides of the limit frame.

[0015] Further, the primary protection unit comprises two symmetrically distributed first follow-up strips, the end of the two first follow-up strips is connected with a second follow-up strip through a rotating shaft, the other end of the two second follow-up strips is fixedly connected with the same support frame through a rotating shaft; the end of the first follow-up strip away from the second follow-up strip is rotatably connected to the end of the first protection bracket or the second protection bracket, and the support frame is arranged on the side wall of the box body corresponding to the first protection bracket or the second protection bracket.

[0016] Further, the primary protection unit further comprises two symmetrically distributed first support arc rods and a second support arc rod located in the same arc path as the first support arc rod, and the first support arc rod and the second support arc rod are connected through a pressure spring. The first support arc rod is arranged at the two ends of the first protection bracket or the second protection bracket, and the second support arc rod is arranged on the side wall of the box body corresponding to the first protection bracket or the second protection bracket.

[0017] Further, the second follow-up strip of the second protection bracket is provided with a first compression joint, and the support frame of the second protection bracket is provided with an extension plate distributed perpendicularly to the second protection bracket, the extension plate is provided with a second compression joint, and the first compression joint and the second compression joint are connected through a pressure spring.

[0018] Further, the secondary protection unit comprises a special-shaped strip arranged inside the first protection bracket and the second protection bracket, and an arch-shaped strip arranged on the side plate at the first end and the tail end, the special-shaped strip is in a corrugated structure, and the recessed part at the center of the special-shaped strip is opposite to the convex surface of the arch-shaped strip, and a plurality of equidistantly distributed rubber columns are arranged on the convex surface of the arch-shaped strip.

[0019] Further, the side plate and the bottom end of the first protection bracket are respectively provided with a first sliding block and a second sliding block, and the bottom plate of the box body is provided with guide rails matched with the first sliding block and the second sliding block.

[0020] Further, the limiting strip is provided with a containing channel capable of accommodating the exposed tab of the soft package battery, and the box body is provided with a channel corresponding to the containing channel.

[0021] In summary, the technical effects and advantages of the present application are:

[0022] 1. The box body is provided with a plurality of parallel arranged side plates, the opposite sides of the adjacent two side plates form a space capable of accommodating the placement of the soft package battery, which improves the stability of the battery, effectively reduces the extrusion phenomenon between the batteries, and improves the safety of the entire soft package battery module during movement. The spacing of the plurality of side plates can be adjusted to facilitate the placement operation of the soft package battery, improve the portability during the installation process of the soft package battery, and further improve the installation efficiency of the soft package battery.

[0023] 2. The present invention features a first protective bracket, a second protective bracket, and first and second protective units on the exterior of the multiple side panels, providing comprehensive protection for the multiple soft-pack batteries arranged therein. This ensures the stability of the soft-pack batteries even in the event of a high-impact accident, minimizing damage to the batteries caused by external impact. This adaptability to the diverse operating environments of soft-pack batteries further enhances their safety during operation. Furthermore, both the first and second protective units can be adjusted to accommodate the side panel position, leaving space for soft-pack batteries without affecting their normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the box body after the upper cover is disassembled.

[0027] Figure 3 This is a schematic diagram of the box body of the present invention after disassembly.

[0028] Figure 4 This is a schematic structural diagram from a second viewing angle after the box body of the present invention is disassembled.

[0029] Figure 5 This is a schematic diagram of the first protective unit after disassembly of the present invention.

[0030] Figure 6 This is a schematic diagram from a second perspective after the first protective unit of the present invention is disassembled.

[0031] Figure 7 It is a schematic diagram of the connection structure of multiple side panels of the present invention.

[0032] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0033] Figure 9 This is a schematic structural diagram of the box body of the present invention from a second viewing angle.

[0034] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B in the middle.

[0035] In the figure: 1, box body; 2, side plate; 21, limiting strip; 22, containing channel; 23, guide block; 24, connecting rod; 25, movable sleeve; 26, positioning sleeve; 27, return spring; 3, first protective support; 31, driving bar; 32, guide gear; 33, hand wheel; 34, containing block; 35, locking block; 36, storage support; 361, guide joint; 37, supporting spring; 38, limiting frame; 4, second protective support; 5, first follower bar; 6, second follower bar; 61, first compression joint; 62, second compression joint; 63, pressure spring two; 7, support frame; 8, first support arc rod; 9, second support arc rod; 10, pressure spring one; 11, special-shaped strip; 12, arched strip; 13, rubber column; 14, first sliding block; 15, second sliding block; 16, guide rail. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] Embodiment 1: refer to Figure 1-10 The soft package battery module box protection structure shown in the figure includes a box body 1 capable of accommodating multiple soft package batteries. Multiple parallel arranged side plates 2 are arranged in the box body 1, and the space capable of accommodating the soft package batteries is formed between the adjacent two side plates 2. The distance between the side plates 2 is adjustable. When the distance between the side plates 2 is reduced to the limit, it can be attached to the surface of the soft package battery, which can be attached to the battery in the vertical state, so that multiple soft package batteries are arranged equidistantly inside the box body 1, which improves the stability of the battery, effectively reduces the extrusion phenomenon between the batteries, and improves the safety of the entire soft package battery module during movement.

[0038] At the same time, during the assembly of the soft package battery, the distance between the multiple side plates 2 is adjustable. After expanding the distance, space is left for the quick placement of the soft package battery. After the soft package battery is placed, the distance is adjusted to the original size to maintain the stability of the soft package battery. The entire process does not require manual winding of the soft package battery, improving the portability during the installation process of the soft package battery, and further improving the installation efficiency of the soft package battery.

[0039] The first protection support 3 and the second protection support 4 are respectively arranged on two side plates 2 located at the head end and the tail end of the plurality of side plates 2, the outer sides of the first protection support 3 and the second protection support 4 are respectively connected with the side wall of the box body 1 through a first protection unit, and the first protection support 3 and the second protection support 4 are both provided with a second protection unit between the side plate 2.

[0040] During use, the first protection unit and the second protection unit are located on both sides of the soft package battery to protect the soft package battery, effectively reducing the damage caused by vibration, collision and accidents to the soft package battery, and further improving the safety of the soft package battery during work. Because the spacing of the plurality of side plates 2 is adjustable, in order to adapt to the movement of the side plate 2, in the present application, when the spacing of the plurality of side plates 2 is adjusted, the first protection support 3, the first protection unit and the second protection unit connected with the first protection support 3 can all be adjusted, leaving space for installing the soft package battery without affecting the normal use of the first protection unit and the second protection unit.

[0041] Specifically, the two ends of the side plate 2 are both provided with a limiting strip 21 pressed on the end of the soft package battery, the bottom end of the limiting strip 21 is provided with a guide block 23 that can move synchronously therewith, and the limiting strip 21 separates the soft package battery from the guide block 23, as shown in Figure 6 、 Figure 7 .

[0042] The same connecting rod 24 is penetrated through the adjacent two guide blocks 23, the connecting rod 24 is provided with a movable sleeve 25 embedded on the front guide block 23, and the connecting rod 24 is fixedly provided with a positioning sleeve 26 installed on the rear guide block 23, and the movable sleeve 25 and the positioning sleeve 26 are connected through a return spring 27, as shown in Figure 8 The bottom end of the side plate 2 located at the tail end is fixed on the bottom plate of the box body 1.

[0043] During the installation of the soft package battery, after the soft package battery is placed, when the side plate 2 located at the head end moves towards the side plate 2 located at the tail end, the movable sleeve 25 embedded on the lower guide block 23 moves along the direction of the connecting rod 24, the return spring 27 is compressed and shrinks towards the direction of the positioning sleeve 26, until the rear side plate 2 moves. Therefore, when the side plate 2 located at the head end moves towards the side plate 2 located at the tail end, the rear side plates 2 can all move towards the side plate 2 located at the tail end, and when they move to the limit, they can support the soft package battery in the vertical state and maintain the stability of the battery.

[0044] In the process of moving the plurality of side plates 2 towards the tail end side plate 2, the reset spring 27 has a buffering effect on the moving side plate 2 since the reset spring 27 is in a contracted state. When the plurality of side plates 2 support the soft-pack battery in turn, the impact force generated during the movement contact between all the side plates 2 and the soft-pack battery can be effectively reduced. Further, the damage to the inside of the soft-pack battery during the contact between all the side plates 2 and the soft-pack battery can be effectively avoided, and the soft-pack battery has a protection effect.

[0045] Conversely, when the side plate 2 at the head end moves away from the side plate 2 at the tail end, the remaining side plates 2 behind it can move back to reset away from the side plate 2 towards the tail end under the action of the reset spring 27, and the spacing is expanded to leave space for taking and placing the soft-pack battery. Further, in order to facilitate the movement of the side plate 2 at the head end, a driving bar 31 is provided on the first protection bracket 3 connected with the side plate 2, as shown in Figure 6 The driving bar 31 extends to the outside of the box body 1, and the driving bar 31 is provided with a rack.

[0046] The box body 1 is provided with a guide gear 32 engaged with the rack outside through a bearing seat, and the lower part of the guide gear 32 is provided with a hand wheel 33 which can rotate synchronously, as shown in Figure 10 If it is necessary to operate the movement of the side plate 2, the hand wheel 33 outside the box body 1 can be operated. When the guide gear 32 engages the rack to move, the driving bar 31, the first protection bracket 3 and the side plate 2 at the head end move synchronously to provide a power source for the movement of the side plate 2 and improve the portability of the operation.

[0047] The first protection unit includes two symmetrically distributed first follower bars 5, and the end of each of the two first follower bars 5 is connected with a second follower bar 6 through a rotating shaft, as shown in Figure 2-4 The other end of each of the two second follower bars 6 is fixedly connected with the same support frame 7 through a rotating shaft. One end of the first follower bar 5 is connected with the second follower bar 6 through a rotating shaft, and the other end is rotatably connected to the end of the first protection bracket 3 or the second protection bracket 4. The support frame 7 is arranged on the side wall of the box body 1 corresponding to the first protection bracket 3 or the second protection bracket 4.

[0048] The combination of the first follower bar 5, the second follower bar 6 and the support frame 7 can form a triangular structure with the first protection bracket 3 and the second protection bracket 4 to improve the structural strength of the first protection bracket 3 and the second protection bracket 4.

[0049] At the same time, the first protection unit also includes two symmetrically distributed first support arc rods 8 and a second support arc rod 9 located in the same arc path as the first support arc rod 8, as shown in Figure 4As shown, the first support arc rod 8 and the second support arc rod 9 are connected by a pressure spring 10. The first support arc rod 8 is arranged at both ends of the first protective support 3 or the second protective support 4, and the second support arc rod 9 is respectively arranged on the side walls of the box body 1 corresponding to the first protective support 3 or the second protective support 4.

[0050] When the box body 1 is subjected to impact, the combination of the first supporting arc rod 8, the second supporting arc rod 9 and the pressure spring 10 can implement protective operations on the first protective support 3 and the second protective support 4. When the box body 1 vibrates under the action of the impact force, the pressure spring 10 connected to the first supporting arc rod 8 and the second supporting arc rod 9 can buffer the vibration phenomenon and prevent the vibration phenomenon from affecting the first protective support 3 and the second protective support 4.

[0051] It is worth mentioning that when the first protective support 3 moves synchronously with the driving bar 31, the secondary protective unit connected to the first protective support 3 moves synchronously, the first follower bar 5 and the second follower bar 6 can adjust the distribution angle, and the pressure spring 10 can also make elastic adaptive deformation, so that the first support arc rod 8 and the second support arc rod 9 can adjust the spacing, flexibly adapt to the movement of the first protective support 3 and the driving bar 31, and leave space for installing soft-pack batteries without affecting the normal use of the first and second protective units.

[0052] The secondary protection unit includes a special-shaped strip 11 provided on the inner side of the first protection bracket 3 and the second protection bracket 4, and an arched strip 12 provided on the side plates 2 at the front and rear ends. The special-shaped strip 11 has a corrugated structure, and the concave part at the center of the special-shaped strip 11 is opposite to the convex surface of the arched strip 12. The convex surface of the arched strip 12 is provided with a plurality of equidistantly distributed rubber columns 13, see Figure 2-4 .

[0053] When the box body 1 is subjected to a relatively violent accident impact, the special-shaped strip 11 can enhance the structural strength of the first protective support 3 and the second protective support 4, while the arched strip 12 can enhance the structural strength of the side panels 2 located at the outermost ends. When the first protective support 3 and the second protective support 4 vibrate under the action of the impact force, the rubber column 13 can cushion the entire vibration phenomenon, preventing the vibration from affecting the soft-pack batteries in the side panels 2.

[0054] Therefore, in the document of the present invention, through the combination of the first-level protection unit and the second-level protection unit, comprehensive protection operations can be implemented for the arranged multiple soft-pack batteries. When subjected to accident impacts with large impact forces, the stability of the soft-pack batteries can be maintained, and the damage caused by external impacts to the soft-pack batteries can be reduced. It is suitable for different working environments of soft-pack batteries.

[0055] In order to maintain the stability of the side panels 2 and the first protective bracket 3 during movement, the bottom ends of the side panels 2 and the first protective bracket 3 are respectively provided with a first slider 14 and a second slider 15. Figure 7 The bottom plate of the box body 1 is provided with a guide rail 16 adapted to the first slider 14 and the second slider 15, see Figure 6 .

[0056] The limiting strips 21 are provided with a receiving channel 22 for accommodating the exposed tabs of the soft-pack battery. Figure 7 The box body 1 is provided with a channel corresponding to the accommodating channel 22 to facilitate the welding operation of the tab.

[0057] Example 2: Based on Example 1, Figure 2 、 Figure 4 As shown, a first clamping joint 61 is provided on the second follower bar 6 facing the second protective support 4, and an extension plate vertically distributed with the second protective support 4 is provided on the support frame 7 facing the second protective support 4, and a second clamping joint 62 is provided on the extension plate. The first clamping joint 61 and the second clamping joint 62 are connected by a second pressure spring 63.

[0058] When the box body 1 is subjected to a collision or accident impact, the combination of the first clamping joint 61, the second clamping joint 62 and the second pressure spring 63, the support frame 7 and the second follower bar 6 can be quickly reset after being vibrated by the impact force from the outside of the box body 1, which can further buffer the impact force from outside the box body 1, further improve the impact resistance performance of the box body 1, and effectively improve the structural strength of the box body 1.

[0059] Because the position of the first protective support 3 needs to be adjusted during actual operation, and since the guide gear 32 and drive bar 31 are manually controlled, the elastic potential energy of the pressure spring 10 will create resistance to the movement of the first protective support 3 during movement. To reduce the remaining resistance during the movement of the first protective support 3, the first clamping joint 61, the second clamping joint 62, and the pressure spring 2 63 are not installed on the outside of the first protective support 3. In actual use, the pressure spring 10 and the pressure spring 2 63 with appropriate elastic resistance can also be selected, and the first clamping joint 61, the second clamping joint 62, and the pressure spring 2 63 can also be installed on the outside of the first protective support 3.

[0060] Example 3: Based on Example 1, Figure 9 、 Figure 10 As shown, in the natural state, in order to prevent the guide gear 32 from rotating, a receiving block 34 is provided at the bottom end of the hand wheel 33, and a locking block 35 is embedded in the receiving block 34 to intercept the rotation of the receiving block 34 and the hand wheel 33. When the locking block 35 is engaged with the receiving block 34, the guide gear 32 and the driving bar 31 can be kept stable.

[0061] In the present invention, the locking block 35 is connected to the storage tray 36 via a rotating shaft. A limit frame 38 that can accommodate the storage tray 36 is provided outside the box body 1. The bottom end of the storage tray 36 is connected to the limit frame 38 via a support spring 37. In the natural state, the support spring 37 can maintain the stability of the locking block 35 and the receiving block 34 in the fitted state. If you want to operate the handwheel 33 and control the rotation of the guide gear 32, you need to release the fitting connection between the locking block 35 and the receiving block 34. When the locking block 35, the limit frame 38 and the guide joint 361 are synchronously lowered under the action of artificial pressure, the support spring 37 contracts, leaving a movable margin that allows the locking block 35 to be screwed into the storage tray 36. In this way, the locking block 35 can be smoothly rotated to be stored inside the storage tray 36 after being separated from the receiving block 34, making it easier to operate the handwheel 33.

[0062] To prevent the storage tray 36 from separating from the limiting frame 38, guide joints 361 are provided on both sides of the storage tray 36, and channels are provided on both sides of the limiting frame 38 to accommodate the movement of the guide joints 361. When the storage tray 36 and the locking block 35 move, the guide joints 361 are relocated and moved within the channels provided in the limiting frame 38, thereby maintaining the stability of the storage tray 36 and the locking block 35 during movement.

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A soft-pack battery module box protection structure, comprising a box body (1) capable of accommodating a plurality of soft-pack batteries, characterized in that: The box body (1) is provided with a plurality of side panels (2) arranged in parallel, and a space for accommodating soft-pack batteries is formed between two adjacent side panels (2); the spacing between the side panels (2) is adjustable, and when the spacing between the side panels (2) is reduced to a limit, the side panels (2) can be attached to the surface of the soft-pack batteries, so that the plurality of soft-pack batteries are arranged at equal distances inside the box body (1); A first protective support (3) and a second protective support (4) are respectively provided on two side panels (2) located at the front and rear ends of the plurality of side panels (2); the outer sides of the first protective support (3) and the second protective support (4) are respectively connected to the side wall of the box body (1) through a primary protective unit, and a secondary protective unit is provided between the first protective support (3), the second protective support (4) and the side panels (2); when the spacing between the plurality of side panels (2) is adjusted, the first protective support (3), the primary protective unit connected to the first protective support (3), and the secondary protective unit can all be adjusted, leaving space for installing soft-pack batteries; The first-level protection unit comprises two symmetrically distributed first follower bars (5), the ends of the two first follower bars (5) are connected to the second follower bars (6) via a rotating shaft, and the other ends of the two second follower bars (6) are fixedly connected to the same support frame (7) via a rotating shaft; the end of the first follower bar (5) away from the second follower bar (6) is rotatably connected to the end of the first protection bracket (3) or the second protection bracket (4), and the support frame (7) is respectively arranged on the side wall of the box body (1) corresponding to the first protection bracket (3) or the second protection bracket (4); The secondary protection unit comprises a special-shaped strip (11) provided on the inner side of the first protection bracket (3) and the second protection bracket (4), and an arched strip (12) provided on the side plates (2) at the front and rear ends. The special-shaped strip (11) has a corrugated structure, and the concave portion of the special-shaped strip (11) at the center is opposite to the convex surface of the arched strip (12). The convex surface of the arched strip (12) is provided with a plurality of equidistantly distributed rubber columns (13).

2. The soft pack battery module box protection structure according to claim 1, characterized in that: Both ends of the side plate (2) are provided with a limit bar (21) pressed on the end of the soft-pack battery, and the bottom end of the limit bar (21) is provided with a guide block (23) that can move synchronously with the limit bar; The two adjacent guide blocks (23) are both penetrated by the same connecting rod (24), the connecting rod (24) is provided with a movable sleeve (25) embedded in the front guide block (23), and the connecting rod (24) is fixed with a positioning sleeve (26) installed on the rear guide block (23), and the movable sleeve (25) and the positioning sleeve (26) are connected by a reset spring (27); the bottom end of the side plate (2) at the rear end is fixed to the bottom plate of the box body (1), when the side plate (2) at the front end moves toward the side plate (2) at the rear end, the movable sleeve (25) embedded in the guide block (23) below it moves along the connecting rod (24), squeezing the reset spring (27) to shrink toward the positioning sleeve (26) until the rear block side plate (2) moves.

3. The soft pack battery module box protection structure according to claim 2, characterized in that: A driving bar (31) is provided on the first protective support (3), the driving bar (31) extends to the outside of the box body (1), and a rack is provided on the driving bar (31); A guide gear (32) meshing with the rack is provided outside the box body (1) through a bearing seat, and a hand wheel (33) that can rotate synchronously with the guide gear (32) is provided below the guide gear (32). When the guide gear (32) meshes with the rack and moves, the drive bar (31), the first protective support (3) and the side plate (2) located at the head end move synchronously.

4. The soft pack battery module box protection structure according to claim 3, characterized in that: The bottom end of the hand wheel (33) is provided with a receiving block (34), and a locking block (35) capable of intercepting the rotation of the receiving block (34) and the hand wheel (33) is embedded in the receiving block (34), and the locking block (35) is connected to a receiving tray (36) via a rotating shaft, and a limiting frame (38) capable of accommodating the receiving tray (36) is provided outside the box body (1); The bottom end of the receiving tray (36) is connected to the limit frame (38) through a support spring (37), and both sides of the receiving tray (36) are provided with guide joints (361), and both sides of the limit frame (38) are provided with channels that can accommodate the movement of the guide joints (361).

5. The soft pack battery module box protection structure according to claim 1, characterized in that: The first-level protection unit further comprises two symmetrically distributed first support arc rods (8) and a second support arc rod (9) located on the same arc path as the first support arc rod (8), wherein the first support arc rod (8) and the second support arc rod (9) are connected via a pressure spring (10); the first support arc rod (8) is arranged at both ends of the first protection support (3) or the second protection support (4), and the second support arc rod (9) is arranged on a side wall of the box body (1) corresponding to the first protection support (3) or the second protection support (4).

6. The soft pack battery module box protection structure according to claim 1, characterized in that: A first clamping joint (61) is provided on the second follower bar (6) facing the second protective support (4), and an extension plate vertically distributed with the second protective support (4) is provided on the support frame (7) facing the second protective support (4), and a second clamping joint (62) is provided on the extension plate. The first clamping joint (61) and the second clamping joint (62) are connected by a second pressure spring (63).

7. The soft pack battery module box protection structure according to claim 1, characterized in that: The bottom ends of the side panels (2) and the first protective support (3) are respectively provided with a first slider (14) and a second slider (15), and the bottom plate of the box body (1) is provided with a guide rail (16) adapted to the first slider (14) and the second slider (15).

8. The soft pack battery module box protection structure according to claim 2, characterized in that: The limiting strips (21) are each provided with an accommodation channel (22) capable of accommodating the exposed tabs of the soft-pack battery, and the box body (1) is provided with a channel corresponding to the accommodation channel (22).

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