A heating film pressurizing device for power battery module

Abstract

The present invention discloses a heating film pressurizing device for a power battery module, which relates to the technical field of power batteries, including a support base, on which an annular transmission mechanism is distributed, and also includes a lifting assembly, a side pressurizing mechanism and a top pressurizing mechanism, wherein the lifting assembly is fixedly arranged on the support base, and the lifting assembly includes a fixed top plate and a lifting platform, wherein the fixed top plate is fixedly connected to the support base, and both sides of the bottom of the fixed top plate are fixedly connected to hydraulic telescopic rods, and the lifting platform is fixedly connected between the telescopic ends of the two hydraulic telescopic rods, and a longitudinally through cavity is provided on the lifting platform; and the side pressurizing mechanism is provided with multiple groups. The present invention only needs to control the extension and contraction of the hydraulic telescopic rod to complete all pressurizing actions, so that the control is convenient and effective, the operation is stable, and the operation efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a heating film pressurizing device for a power battery module. Background Art

[0002] With the development of new energy vehicles and energy storage technology, power battery technology is also constantly improving. The application of power battery systems in the automotive field is becoming more and more extensive, and in order to meet the reliable and safe operation of the battery at low temperatures, it is necessary to add a heating film on the battery surface to increase the battery temperature. Generally, the bottom of the battery pack is fixed in the battery slot and has a certain insulation effect, so there is no need to apply a heating film. It is mainly the vertical side and top of the battery pack that need to be affixed with a heating film to increase the temperature. After the heating film is adhered to the end face of the battery pack through the colloid material, it is also necessary to pressurize it with a pressurizing device to ensure that the heating film fully fits the end face of the battery pack to avoid debonding.

[0003] The existing Chinese patent authorization announcement number CN219979627U discloses a heating film pressurizing device for a power battery module, including a base, a square groove is arranged in the middle of the upper end surface of the base, a group of electric push rods are distributed on the inner wall of the square groove, a longitudinally moving driving mechanism is distributed at the telescopic end of the electric push rod, and a first roller is distributed at the driving end, and another group of electric push rods are distributed above the base, the telescopic end of the electric push rod is connected to a transverse driving mechanism, and the transverse driving mechanism is connected to a second roller. When it is necessary to pressurize the heating film fanned up on the side of the battery pack, the first roller is driven by the corresponding electric push rod to contact the heating film on the corresponding side, and then the longitudinal moving driving mechanism drives the first roller to move longitudinally to roll the corresponding heating film, and the second roller is driven by the corresponding electric push rod to descend and contact the heating film on the top of the battery pack, and then the transverse driving mechanism drives the second roller to move transversely and roll.

[0004] The shortcomings of the above-mentioned prior art solutions are: although the above-mentioned hair bladder can roll the heating films on the vertical sides and top end faces of the battery pack to achieve pressurization and make them fit tightly, when pressurizing the heating films on each end face, it is necessary to control the corresponding electric push rods to extend and retract, and it is also necessary to control the corresponding transverse or longitudinal drive mechanisms to drive the corresponding rollers to move horizontally and roll the heating films. Finally, after the pressurization is completed, it is necessary to control each electric push rod to drive the corresponding rollers to reset, that is, it is necessary to control the operation of multiple components at the same time to complete the pressurization of the heating films on different sides of the battery pack, resulting in inconvenient and ineffective operation and low operating efficiency. Summary of the invention

[0005] The object of the present invention is to provide a heating film pressurizing device for a power battery module, so as to solve the technical problems in the prior art that the power battery heating film pressurizing device is inconvenient to operate to pressurize the heating films on different sides and has low operating efficiency.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A heating film pressurizing device for a power battery module comprises a support base, on which a ring-shaped transmission mechanism is distributed, and further comprises:

[0008] A lifting assembly, wherein the lifting assembly is fixedly arranged on the support base, and the lifting assembly comprises a fixed top plate and a lifting platform, wherein the fixed top plate is fixedly connected to the support base, and both sides of the bottom of the fixed top plate are fixedly connected to hydraulic telescopic rods, and the lifting platform is fixedly connected between the telescopic ends of the two hydraulic telescopic rods, and a longitudinally through cavity is opened on the lifting platform;

[0009] The side pressure mechanism and the top pressure mechanism, the side pressure mechanism is provided with multiple groups and distributed circumferentially on the inner wall of the cavity; the top pressure mechanism includes an elastic rolling mechanism and a transverse bracket, the transverse bracket is provided with two groups and is horizontally fixedly connected to the top two sides of the lifting platform respectively, the elastic rolling mechanism is laterally slidably arranged between the two transverse brackets, and the fixed top plate is provided with a force storage and limiting component that cooperates with the elastic rolling mechanism.

[0010] As a further solution of the present invention: the elastic rolling mechanism includes a connecting slider, a lifting guide column, a transverse rolling piece and a limiting convex plate, the connecting slider is provided with two pieces, the two transverse brackets are both laterally provided with connecting slide grooves, and the connecting slider is correspondingly slidably connected to the connecting slide grooves, a force storage spring is connected between the connecting slider and the corresponding connecting slide groove, the lifting guide column is provided with two pieces, and they respectively penetrate the corresponding connecting sliders longitudinally, the transverse rolling piece is arranged between the top ends of the two lifting guide columns, the bottoms of the two lifting guide columns are fixedly connected to the limiting blocks, the limiting convex plates are provided with two pieces, and they are respectively horizontally fixedly connected to the corresponding transverse brackets, and the limiting convex plates and the connecting slider are both matched with the force storage limiting components.

[0011] As a further solution of the present invention: the transverse rolling member includes a transverse plate, a first rolling column and a first elastic member, the two ends of the transverse plate are respectively fixedly connected to the tops of the corresponding lifting guide columns, the first elastic member is arranged at the bottom of the transverse plate, and the first rolling column is connected to the transverse plate through the first elastic member.

[0012] As a further solution of the present invention: the first elastic member includes an axis rod and a first spring, two axis rods are provided, slots are opened on both sides of the bottom of the cross plate, the two axis rods are respectively slidably inserted into the corresponding slots, the first rolling column is rotatably connected between the bottom ends of the two axis rods, and the top ends of the two axis rods are respectively connected to the corresponding slots through the first springs.

[0013] As a further solution of the present invention: the force storage and limiting assembly includes an elastic connecting mechanism, a U-shaped rotating frame and a limiting baffle, one end of the U-shaped rotating frame is movably connected to the fixed top plate through the elastic connecting mechanism, the other end of the U-shaped rotating frame is fitted on the limiting convex plate, the limiting baffle is fixedly connected to the bottom of the fixed top plate, and the limiting baffle is aligned and fitted with the transverse rolling member.

[0014] As a further solution of the present invention: the elastic connection mechanism includes a strip slide groove and a limit slider, the strip slide groove is horizontally opened on the bottom side of the fixed top plate, the limit slider is slidably connected in the strip slide groove, and a second spring is also connected between the limit slider and the strip slide groove, and the end of the U-shaped rotating frame close to the fixed top plate is movably connected to the limit slider through a rebound hinge.

[0015] As a further solution of the present invention: each group of the side pressure mechanism includes a second elastic member and a second rolling column, and a movable groove is opened on each inner wall of the cavity. One end of the second elastic member is movably connected in the corresponding movable groove, and the other end is cooperatively connected with the second rolling column.

[0016] As a further solution of the present invention: the second elastic member includes a rotating rod and a connecting shaft, two rotating rods are provided and distributed at both ends of the second rolling column, one end of the rotating rod is rotatably connected to the corresponding end of the second rolling column, and the other end is rotatably connected to the corresponding movable groove through the connecting shaft, and a disc spring is also connected between the connecting shaft and the inner wall of the movable groove.

[0017] As a further solution of the present invention: the annular conveying mechanism includes a transmission wheel, a conveyor belt and a tray, a stepper motor is fixedly connected inside the support base, two transmission wheels are provided, and are rotatably connected to the two ends of the support base respectively, and the main shaft of the stepper motor is coaxially connected to one of the transmission wheels, the conveyor belt is cooperatively connected between the two transmission wheels, and multiple trays are provided, and are equidistantly connected to the conveyor belt.

[0018] As a further solution of the present invention: an annular guide rail is fixedly connected to the support base, and each of the trays is slidably matched with the annular guide rail.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention relies on the hydraulic telescopic rod to drive the lifting platform to descend to initially stick the battery pack with the heating film. During the descent process, the second rolling column distributed in the internal cavity of the lifting platform will roll against the side of the battery pack due to the extrusion effect, so as to pressurize the side heating film. When the top of the battery pack passes through the top of the cavity, the top of the battery pack pushes the first rolling column, and the first rolling column relies on the cross plate to drive the lifting guide column to rise and disengage from the limiting convex plate, so as to automatically release the limit. The force storage spring arranged in this way releases the rebound force, so that the first rolling column relies on the connecting slider to slide horizontally, which is convenient for rolling the heating film on the top of the battery pack, thereby automatically pressurizing the side and top heating films in turn, without having to control the pressurization of the heating films on different surfaces in turn, and all pressurization actions can be completed by controlling the extension and retraction of the hydraulic telescopic rod, so that the control is convenient and effective, the operation is stable, and the operation efficiency is high.

[0021] After the lifting platform is lowered, the force storage spring releases its elastic force, so that the first rolling post completes the transverse movement, and the lifting platform is lifted up by contracting the hydraulic telescopic rod. During this process, the bottom of the U-shaped rotating frame is in contact with the limit convex plate. Then, due to the extrusion effect, the bottom end of the U-shaped rotating frame slides along the limit convex plate, thereby pushing the connecting slider to move horizontally and reset, and stretching the force storage spring to store force again. When the connecting slider moves to the initial position, the lifting guide column just deviates from the limit convex plate. Then, as the lifting platform continues to lift, the transverse plate connected to the first rolling column is squeezed onto the limit baffle, thereby being blocked, causing the lifting guide column to descend and be on one side of the limit convex plate, thereby relying on the limit convex plate to limit, so that the force storage spring cannot release its elastic force. In this way, during the resetting process of the lifting platform, the first rolling column is automatically reset, and the force storage spring is automatically charged, which is convenient for operation and use again, and no manual adjustment and reset are required.

[0022] 3. The present invention relies on a transmission wheel to drive the conveyor belt, and the conveyor belt drives the tray to run, so that it is convenient to pass under the lifting platform in turn. Each tray can be placed with a battery pack, so that the battery packs with the heating film initially attached can pass under the lifting platform in turn for pressurization. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the lifting platform and the fixed top plate in the present invention;

[0026] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 4It is a schematic diagram of a top view of the structure of the connecting slider and the horizontal bracket in the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the second rolling column and the lifting platform in the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the first rolling column and the horizontal plate in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure when the first rolling column and the second rolling column act on the end surface of the battery pack in the present invention.

[0031] In the figure: 1. support base; 2. transmission wheel; 3. conveyor belt; 4. tray; 5. annular guide rail; 6. battery pack; 7. lifting platform; 8. fixed top plate; 9. hydraulic telescopic rod; 10. U-shaped turntable; 11. horizontal bracket; 12. limit baffle; 13. horizontal plate; 14. first rolling column; 15. connecting slider; 16. lifting guide column; 17. pulley; 18. limit convex plate; 19. connecting slide; 20. force storage spring; 21. second rolling column; 22. rotating rod; 23. movable groove; 24. connecting shaft; 25. shaft rod; 26. slot; 27. first spring; 28. limit block; 29. ​​cavity; 30. strip slide; 31. limit slider; 32. second spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-Figure 7 As shown, a heating film pressurizing device for a power battery module comprises a support base 1, on which a ring-shaped conveying mechanism is distributed, a station for initially pasting a heating film is arranged on the movement route of the ring-shaped conveying mechanism, and then the battery pack 6 with the heating film pasted is conveyed by the ring-shaped conveying mechanism and transported to a pressurizing position for pressurization; the device also comprises a lifting assembly, a side pressurizing mechanism and a top pressurizing mechanism;

[0034] The lifting assembly is fixedly arranged on the support base 1, and the lifting assembly includes a fixed top plate 8 and a lifting platform 7. The fixed top plate 8 is fixedly connected to the support base 1 through a bracket. Both sides of the bottom of the fixed top plate 8 are fixedly connected with hydraulic telescopic rods 9. The lifting platform 7 is fixedly connected between the telescopic ends of the two hydraulic telescopic rods 9. A longitudinally through cavity 29 is opened on the lifting platform 7, and the cavity 29 matches the external dimensions of the battery pack 6.

[0035] There are multiple groups of side pressure mechanisms, which are circumferentially distributed on the inner wall of the cavity 29. Each group of side pressure mechanisms corresponds to a vertical side of the battery pack 6. It should be noted that since the bottom of the battery pack 6 is generally in close contact with the vehicle chassis, and the chassis itself has a certain thermal insulation performance, there is no need to affix a heating film to the bottom of the battery pack 6. A heating film is only affixed to each vertical side and top end face of the battery pack 6.

[0036] The top pressure mechanism includes an elastic rolling mechanism and a transverse bracket 11. There are two groups of transverse brackets 11, which are horizontally fixedly connected to the two sides of the top of the lifting platform 7 respectively. The two are parallel to each other and exist in pairs. The elastic rolling mechanism is laterally slidably arranged between the two transverse brackets 11, and a force storage and limiting component that cooperates with the elastic rolling mechanism is arranged on the fixed top plate 8.

[0037] When the battery pack 6 is transported to the bottom of the lifting platform 7 by the annular conveying mechanism, the hydraulic telescopic rod 9 is extended to make the lifting platform 7 descend. At this time, the cavity 29 in the lifting platform 7 descends to cover the battery pack 6. In this process, the distributed side pressure mechanisms produce a relative rolling effect on the vertical sides of the battery pack 6, so as to facilitate the pressurization of the laminated heating film, making the laminate more tightly. When the lifting platform 7 descends to a certain position and causes the top of the battery pack 6 to pass through the cavity 29, the top of the battery pack 6 acts on the top pressure mechanism, and the elastic rolling mechanism in the top pressure mechanism releases the pressure and moves laterally, so as to facilitate the rolling of the heating film on the top of the battery pack 6. After the rolling of the heating films on each side is completed, the lifting platform 7 is lifted by the hydraulic telescopic rod 9. After it is lifted to the corresponding height position, the elastic rolling mechanism interacts with the force storage limit assembly, so that the elastic rolling mechanism is reset to facilitate the next operation.

[0038] In some specific implementation schemes, in order to facilitate the elastic rolling mechanism to release elastic force and perform lateral elastic movement after being squeezed by the top of the battery pack 6 to achieve rolling, such as Figure 3 and Figure 4As shown, the elastic rolling mechanism includes a connecting slider 15, a lifting guide column 16, a transverse rolling member and a limiting convex plate 18. The connecting slider 15 is provided with two pieces. The two transverse brackets 11 are both provided with connecting grooves 19 in a transverse direction. The connecting slider 15 is correspondingly slidably connected with the connecting grooves 19. A stretchable force storage spring 20 is connected between the connecting slider 15 and the corresponding connecting groove 19. There are two lifting guide columns 16, which respectively penetrate the corresponding connecting slider 15 longitudinally. The lifting guide columns 16 can be relatively connected to the connecting slider. The block 15 slides up and down, and the transverse rolling piece is arranged between the top ends of the two lifting guide pillars 16. The bottoms of the two lifting guide pillars 16 are fixedly connected to the limit block 28. The limit block 28 prevents the lifting guide pillar 16 from detaching when it slides and rises. There are two limit convex plates 18, which are respectively fixedly connected horizontally to the corresponding transverse bracket 11. The limit convex plates 18 and the connecting slider 15 are matched with the force storage limit assembly, and the limit convex plates 18 are distributed on the same side as the connecting slide groove 19. The limit convex plates 18 are in the connecting slide groove 1 9, the length of the connecting slide 19 is greater than the length of the limiting convex plate 18. When the connecting slider 15 slides in the stretching direction of the force storage spring 20 with the transverse rolling member and slides to one end of the connecting slide 19, the lifting guide column 16 deviates from the upper side of the limiting convex plate 18 and is located on the side of the limiting convex plate 18. Then, the lifting guide column 16 slides down relative to the connecting slider 15, so that the lower end of the lifting guide column 16 is flush with the limiting convex plate 18 or lower than the limiting convex plate 18. In this way, the limiting convex plate 18 can be used to realize the connection slider 15. The limit makes it temporarily unable to rely on the rebound force of the force storage spring 20 to reset. Only when the lifting platform 7 is lowered and docked onto the battery pack 6, the top of the battery pack 6 exerts an upward squeezing effect on the transverse rolling part, thereby causing the transverse rolling part to rise with the lifting guide column 16. When the bottom end of the lifting guide column 16 is higher than the position of the limiting convex plate 18, the limit is released, and the rebound force of the force storage spring 20 is released, thereby driving the transverse rolling part to move laterally through the connecting slider 15, thereby realizing the rolling effect on the heating film on the top of the battery pack 6.

[0039] In some specific embodiments, in order to ensure that the transverse rolling member can effectively roll the heating film on the top end surface of the battery pack 6, such as Figure 6 As shown, the transverse rolling member includes a transverse plate 13, a first rolling column 14 and a first elastic member. The two ends of the transverse plate 13 are respectively fixedly connected to the tops of the corresponding lifting guide columns 16 through a rod body. The first elastic member is arranged at the bottom of the transverse plate 13, and the first rolling column 14 is connected to the transverse plate 13 through the first elastic member.

[0040] Among them, the first elastic member includes an axis rod 25 and a first spring 27. Two axis rods 25 are provided. Slots 26 are opened on both sides of the bottom of the cross plate 13. The two axis rods 25 are slidably inserted into the corresponding slots 26 respectively. The first rolling column 14 is rotatably connected between the bottom ends of the two axis rods 25 through a rotating shaft. The top ends of the two axis rods 25 are connected to the corresponding slots 26 respectively through the first springs 27, and the first springs 27 are compressible.

[0041] like Figure 7 As shown, when the battery pack 6 and the lifting platform 7 move relative to each other and pass through the cavity 29 upward, the top of the battery pack 6 pushes the first rolling column 14 upward, and the first rolling column 14 causes the cross plate 13 to drive the lifting guide column 16 to slide and rise relative to the connecting slider 15, and when the limit block 28 at the bottom of the lifting guide column 16 limits the lifting guide column 16, the battery pack 6 continues to pass upward relative to the cavity 29, thereby squeezing the first rolling column 14, causing the shaft rod 25 connected to the first rolling column 14 to slide upward and insert into the slot 26, squeezing the first spring 27, and the first spring 27 generates a rebound force, so that the first rolling column 14 can press the top of the battery pack 6 with a certain pressure, so that when moving horizontally, the first rolling column 14 can effectively roll the heating film on the top of the battery pack 6.

[0042] In some specific embodiments, the force storage and limiting assembly includes an elastic connecting mechanism, a U-shaped rotating frame 10 and a limiting baffle 12. One end of the U-shaped rotating frame 10 is movably connected to the fixed top plate 8 through the elastic connecting mechanism, and the U-shaped rotating frame 10 is in an inclined position. The other end of the U-shaped rotating frame 10 is fitted on the limiting convex plate 18. The two are in contact and can slide relative to each other. A pulley 17 is provided at the end of the U-shaped rotating frame 10 that contacts the limiting convex plate 18, and the end of the U-shaped rotating frame 10 that cooperates with the limiting convex plate 18 is also aligned with the connecting slider 15. The limiting baffle 12 is fixedly connected to the bottom of the fixed top plate 8, and the limiting baffle 12 is aligned and matched with the transverse rolling member.

[0043] Among them, the elastic connection mechanism includes a strip slide groove 30 and a limit slider 31. The strip slide groove 30 is horizontally opened on one side of the bottom of the fixed top plate 8. The limit slider 31 is slidably connected in the strip slide groove 30. The limit slider 31 is limited in the strip slide groove 30 and cannot fall off. It can only slide horizontally along the strip slide groove 30. A compressible second spring 32 is also connected between the limit slider 31 and the strip slide groove 30. The specification of the second spring 32 is larger than that of the force storage spring 20. That is, when subjected to the same force, the force storage spring 20 is deformed first, and the end of the U-shaped rotating frame 10 close to the fixed top plate 8 is movably connected to the limit slider 31 through a rebound hinge.

[0044] When the hydraulic telescopic rod 9 drives the lifting platform 7 to descend and causes the transverse rolling piece to roll the heating film along the top of the battery pack 6, the connecting slider 15 moves with the transverse rolling piece to the connecting slide groove 19 close to one end of the U-shaped rotating frame 10. When the hydraulic telescopic rod 9 drives the lifting platform 7 to rise and reset, the lifting platform 7 drives the connecting slider 15 and the limiting convex plate 18 to rise through the transverse bracket 11. During the lifting process, the bottom end of the inclined U-shaped rotating frame 10 first contacts the limiting convex plate 18, and then with the rising and squeezing effect, the bottom end of the U-shaped rotating frame 10 slides laterally along the surface of the limiting convex plate 18, and pushes the connecting slider 15 to push the connecting slider 15 to reset and slide along the connecting slide groove 19. During this process, the force storage spring 20 stretches and stores force, while the second spring 32 does not deform. When the connecting slider 15 slides to the other end of the connecting slide groove 19, the bottom end of the lifting guide column 16 is not supported and lifted by the limiting convex plate 18 at this time, and The connecting slide block 15 can no longer be pushed and moved by the U-shaped rotating frame 10, and the hydraulic telescopic rod 9 continues to drive the lifting platform 7 to rise, so that the limit slide block 31 slides laterally along the strip slide groove 30 due to the extrusion effect and compresses the second spring 32. During this process, the U-shaped rotating frame 10 deflects relative to the connecting slide block 15, thereby avoiding obstruction of the lifting platform 7 from lifting with the transverse rolling member. When the lifting platform 7 continues to lift with the transverse rolling member, the transverse rolling member hits the limit baffle 12, thereby being blocked and unable to continue to rise. In this way, the lifting guide column 16 connected to the transverse rolling member slides down relative to the connecting slide block 15. Since the bottom of the lifting guide column 16 is not supported and lifted by the unlimited convex plate 18, the bottom end of the lifting guide column 16 slides to a position lower than the limited convex plate 18, so that the connecting slide block 15 is limited and temporarily unable to move laterally by relying on the rebound force of the storage spring 20. After it drops again, it can continue to release the rebound force and move.

[0045] In some specific embodiments, such as Figure 5 As shown, each set of side pressure mechanisms includes a second elastic member and a second rolling column 21, and a movable groove 23 is opened on each inner wall of the cavity 29. One end of the second elastic member is movably connected in the corresponding movable groove 23, and the other end is cooperatively connected with the second rolling column 21.

[0046] Among them, the second elastic member includes a rotating rod 22 and a connecting shaft 24. Two rotating rods 22 are provided and are distributed at both ends of the second rolling column 21. One end of the rotating rod 22 is rotatably connected to the corresponding end of the second rolling column 21, and the other end is rotatably connected to the corresponding movable groove 23 through the connecting shaft 24, and a coil spring is also connected between the connecting shaft 24 and the inner wall of the movable groove 23.

[0047] When the lifting platform 7 descends, the cavity 29 descends to cover the battery pack 6. Figure 7As shown, each edge of the battery pack 6 is squeezed through the distributed second rolling columns 21. When each second rolling column 21 is subjected to upward squeezing, it is deflected by relying on the corresponding rotating rod 22. During this process, the coil spring connected to the connecting shaft 24 is rolled up to generate a rebound force. In this way, when the second rolling column 21 contacts the side of the battery pack 6, it can rely on the rebound force to press the side of the battery pack 6. Then, during the relative longitudinal movement between the lifting platform 7 and the battery pack 6, the second rolling column 21 can roll the heating film on the side of the battery pack 6.

[0048] In some specific embodiments, the annular conveying mechanism includes a transmission wheel 2, a conveyor belt 3 and a tray 4. A stepper motor is fixedly connected inside the support base 1. Two transmission wheels 2 are provided and are rotatably connected to the two ends of the support base 1 respectively. The main shaft of the stepper motor is coaxially connected to one of the transmission wheels 2. The conveyor belt 3 is cooperatively connected between the two transmission wheels 2. A plurality of trays 4 are provided and are equidistantly connected to the conveyor belt 3.

[0049] In order to stably support the tray 4 , an annular guide rail 5 is fixedly connected to the support base 1 , and each tray 4 is slidably matched with the annular guide rail 5 .

[0050] After the heating film is initially attached to the side of the battery pack 6, it is placed on the tray 4, and then the driving wheel 2 is driven by the stepper motor to run, so that the driving wheel 2 drives the tray 4 to move through the conveyor belt 3, so that the battery packs 6 are driven by the tray 4 to move one by one to the bottom of the lifting platform 7 for pressurization.

[0051] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0052] First, the heating film is preliminarily pasted on each side and top of the battery pack 6 at the film pasting station, and it is placed on the tray 4. Then, the driving wheel 2 is driven by the stepper motor to run, so that the driving wheel 2 drives the tray 4 to move through the conveyor belt 3, so that the battery packs 6 are driven by the tray 4 to move one by one to the bottom of the lifting platform 7;

[0053] When the battery pack 6 is transported to the bottom of the lifting platform 7, the hydraulic telescopic rod 9 is controlled to extend, so that the lifting platform 7 descends, the limiting convex plate 18 and the connecting slider 15 descend synchronously, and detach from the bottom end of the U-shaped rotating frame 10. At this time, the cavity 29 in the lifting platform 7 descends to cover the battery pack 6, and the edges of the battery pack 6 are squeezed through the second rolling columns 21 distributed on the inner side of the cavity 29. When the second rolling columns 21 are subjected to the upward squeezing effect, they are deflected by the corresponding rotating rod 22. In this process, the coil spring connected to the connecting shaft 24 is rolled up to generate a rebound force. In this way, when the second rolling column 21 contacts the side of the battery pack 6, it can rely on the rebound force to press the side of the battery pack 6. Then, in the process of relative longitudinal movement between the lifting platform 7 and the battery pack 6, the second rolling column 21 can roll the heating film on the side of the battery pack 6.

[0054] During the process of the lifting platform 7 descending relative to the battery pack 6, the battery pack 6 finally passes through the top of the cavity 29. At this time, the top of the battery pack 6 pushes the first rolling column 14 upward, and the first rolling column 14 causes the cross plate 13 to drive the lifting guide column 16 to slide and rise relative to the connecting slider 15. When the bottom end of the lifting guide column 16 is higher than the position of the limiting convex plate 18, the limit is released, and the rebound force of the force storage spring 20 is released, thereby driving the cross plate 13 and the first rolling column 14 to move horizontally through the connecting slider 15, so as to achieve the rolling effect on the heating film on the top of the battery pack 6;

[0055] After the lifting guide column 16 is raised to the highest position and is restricted, the battery pack 6 continues to move upward relative to the cavity 29, thereby squeezing the first rolling column 14, causing the shaft 25 connected to the first rolling column 14 to slide upward and insert into the slot 26, squeezing the first spring 27, and the first spring 27 generates a rebound force, so that the first rolling column 14 can press the top of the battery pack 6 with a certain pressure, so that when moving horizontally, the first rolling column 14 can effectively roll the heating film on the top of the battery pack 6, that is, the heating film is automatically pressurized on the side and top of the battery pack 6 in turn;

[0056] Then the hydraulic telescopic rod 9 drives the lifting platform 7 to rise and reset, and the lifting platform 7 drives the connecting slider 15 and the limiting convex plate 18 to rise through the transverse bracket 11. During the lifting process, the bottom end of the inclined U-shaped rotating frame 10 first contacts the limiting convex plate 18, and then with the rising extrusion, the bottom end of the U-shaped rotating frame 10 slides laterally along the surface of the limiting convex plate 18, and the pushing action connects the slider 15, pushing the connecting slider 15 to reset and slide along the connecting slide groove 19. During this process, the force storage spring 20 stretches and stores force, and the second spring 32 does not deform. When the connecting slider 15 slides and resets to the initial position, the bottom end of the lifting guide column 16 is now supported and lifted by the unlimited convex plate 18, and the connecting slider 15 cannot continue to be pushed up by the U-shaped rotating frame 10 to move, and the hydraulic telescopic rod 9 continues to drive the lifting platform 7 to rise. The positioning slider 31 slides laterally along the strip slide groove 30 due to the extrusion effect and compresses the second spring 32. During this process, the U-shaped rotating frame 10 deflects relative to the connecting slider 15, thereby avoiding obstruction of the lifting platform 7 with the transverse rolling member rising. As the lifting platform 7 continues to rise, the transverse plate 13 of the transverse rolling member hits the limit baffle 12, thereby being blocked and unable to continue to rise. In this way, the lifting guide column 16 connected to the transverse plate 13 slides down relative to the connecting slider 15. Since its bottom is not supported by the unlimited convex plate 18, the bottom end of the lifting guide column 16 slides to a position lower than the limited convex plate 18, thereby limiting the connecting slider 15 and temporarily unable to move laterally by relying on the rebound force of the storage spring 20. After it drops again, it can continue to release the rebound force and move, so that it can be repeatedly and effectively pressurized.

[0057] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A heating film pressurizing device for a power battery module, comprising a support base (1), on which a ring-shaped transmission mechanism is distributed, characterized in that: Also includes: A lifting component, the lifting component is fixedly arranged on a support base (1), and the lifting component comprises a fixed top plate (8) and a lifting platform (7), the fixed top plate (8) is fixedly connected to the support base (1), both sides of the bottom of the fixed top plate (8) are fixedly connected to hydraulic telescopic rods (9), the lifting platform (7) is fixedly connected between the telescopic ends of the two hydraulic telescopic rods (9), and a longitudinally through cavity (29) is opened on the lifting platform (7); A side pressure mechanism and a top pressure mechanism, wherein the side pressure mechanism is provided in multiple groups and is circumferentially distributed on the inner wall of the cavity (29); the top pressure mechanism comprises an elastic rolling mechanism and a transverse bracket (11), wherein the transverse bracket (11) is provided in two groups and is horizontally fixedly connected to the top two sides of the lifting platform (7), respectively, and the elastic rolling mechanism is laterally slidably arranged between the two transverse brackets (11), and the fixed top plate (8) is provided with a force storage limit assembly that cooperates with the elastic rolling mechanism; The elastic rolling mechanism comprises a connecting slider (15), a lifting guide column (16), a transverse rolling member and a limiting convex plate (18). The connecting slider (15) is provided with two pieces. The two transverse brackets (11) are both provided with connecting slide grooves (19) transversely, and the connecting slider (15) is correspondingly slidably connected to the connecting slide grooves (19). A force storage spring (20) is connected between the connecting slider (15) and the corresponding connecting slide groove (19). The lifting guide column (16) is provided with two pieces, and they respectively longitudinally penetrate the corresponding connecting slider (15). The transverse rolling member is provided between the top ends of the two lifting guide columns (16). The bottom ends of the two lifting guide columns (16) are fixedly connected to the limiting block (28). The limiting convex plate (18) is provided with two pieces, and they are respectively horizontally fixedly connected to the corresponding transverse bracket (11). The limiting convex plate (18) and the connecting slider (15) are both matched with the force storage limiting component. The transverse rolling member comprises a transverse plate (13), a first rolling column (14) and a first elastic member, the two ends of the transverse plate (13) are respectively fixedly connected to the tops of corresponding lifting guide columns (16), the first elastic member is arranged at the bottom of the transverse plate (13), and the first rolling column (14) is connected to the transverse plate (13) via the first elastic member; The first elastic member comprises a shaft rod (25) and a first spring (27), two shaft rods (25) are provided, slots (26) are provided on both sides of the bottom of the horizontal plate (13), the two shaft rods (25) are respectively slidably inserted into the corresponding slots (26), the first rolling column (14) is rotatably connected between the bottom ends of the two shaft rods (25), and the top ends of the two shaft rods (25) are respectively connected to the corresponding slots (26) through the first springs (27); Each group of the side pressure mechanism comprises a second elastic member and a second rolling column (21), each inner wall of the cavity (29) is provided with a movable groove (23), one end of the second elastic member is movably connected in the corresponding movable groove (23), and the other end is cooperatively connected with the second rolling column (21); The second elastic member comprises a rotating rod (22) and a connecting shaft (24). Two rotating rods (22) are provided and are distributed at both ends of the second rolling column (21). One end of the rotating rod (22) is rotatably connected to the corresponding end of the second rolling column (21), and the other end is rotatably connected to the corresponding movable groove (23) through the connecting shaft (24). A coil spring is also matched and connected between the connecting shaft (24) and the inner wall of the movable groove (23).

2. A heating film pressurizing device for a power battery module according to claim 1, characterized in that: The force storage and limiting assembly comprises an elastic connection mechanism, a U-shaped rotating frame (10) and a limiting baffle (12); one end of the U-shaped rotating frame (10) is movably connected to the fixed top plate (8) through the elastic connection mechanism; the other end of the U-shaped rotating frame (10) is fitted on the limiting convex plate (18); the limiting baffle (12) is fixedly connected to the bottom of the fixed top plate (8), and the limiting baffle (12) is aligned and fitted with the transverse rolling member.

3. A heating film pressurizing device for a power battery module according to claim 2, characterized in that: The elastic connection mechanism comprises a strip slide groove (30) and a limiting slider (31); the strip slide groove (30) is transversely opened on one side of the bottom of the fixed top plate (8); the limiting slider (31) is slidably connected in the strip slide groove (30); a second spring (32) is also connected between the limiting slider (31) and the strip slide groove (30); and the end of the U-shaped rotating frame (10) close to the fixed top plate (8) is movably connected to the limiting slider (31) through a rebound hinge.

4. The heating film pressurizing device for a power battery module according to claim 1, characterized in that: The annular transmission mechanism comprises a transmission wheel (2), a conveyor belt (3) and a tray (4); a stepper motor is fixedly connected inside the support base (1); two transmission wheels (2) are provided and are rotatably connected to the two ends of the support base (1), and the main shaft of the stepper motor is coaxially connected to one of the transmission wheels (2); the conveyor belt (3) is cooperatively connected between the two transmission wheels (2); and a plurality of trays (4) are provided and are equidistantly connected to the conveyor belt (3).

5. A heating film pressurizing device for a power battery module according to claim 4, characterized in that: The support base (1) is also fixedly connected to an annular guide rail (5), and each of the trays (4) is slidably matched with the annular guide rail (5).

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