Battery tray rack restraint device

Abstract

To provide a battery tray rack restraint device capable of stably performing restraint and release operations for a battery tray rack.SOLUTION: A controller drives a thrust generating device and causes a pressure head, accompanied by at least one locking module, to approach a battery tray rack and press the battery tray rack, and then the controller controls a screw locking device to lock and restrain the battery tray rack with a screw, or release the lock on the screw to release the restraint.SELECTED DRAWING: Figure 1A

Description

[Technical field]

[0001] The present invention relates to machinery equipment in a chemical production line, and more particularly to a battery tray rack restraining device that can stably perform restraining and releasing operations for a battery tray rack. [Background technology]

[0002] In the production line of the chemical process for manufacturing batteries, the conventional restraint release device for clamping and fixing the battery cells mainly uses one screw as the force-applying part to apply restraint force to the battery tray rack. In this way, multiple soft-pack lithium batteries can be clamped and molded. Similarly, by reversing the above process, the molding pressure of the soft-pack lithium battery is released and the restraint force of the battery frame is released. For the prior art, please refer to China Patent Publication No. 111326781 "Soft-pack Battery Tray Automatic Switching Pressure Clamping Mechanism and Switching Clamping Method" and China Patent Publication No. 111261920 "Restraint Release Device", etc. Summary of the Invention [Problem to be solved by the invention]

[0003] However, although the structure of the conventional restraining device is relatively simple, all the pressure suppression or decompression release execution processes are completely performed by the battery tray rack itself, since it only locks or unlocks the screws of the battery tray frame. To explain further, when the conventional battery tray rack is pressed and restrained, the battery separator on the tray rack is pressed only by the force of the screws, and the soft-packed lithium batteries are restrained from excessive expansion during formation.

[0004] From the above, while the conventional restraint device has the advantage of being relatively simple in structure, it merely locks or unlocks the screws of the battery tray rack.

[0005] Furthermore, when a conventional battery tray rack is restrained by applying pressure, the battery separator on the tray rack is pressed down by the force of the screws alone, restraining the soft-pack lithium battery from excessive expansion during molding.

[0006] However, conventional battery tray racks do not have a shock absorbing mechanism, and the force of expansion must be fully supported by the screws and battery separators. This has the disadvantage that if the screws and battery separators are not strong enough, the pallet rack is likely to be damaged. On the other hand, to avoid this, it is necessary to provide the screws and battery separators with sufficient strength, which tends to make the entire device larger and therefore more expensive.

[0007] In addition, after long periods of use, the battery separator and screws are subjected to repeated large stresses, and the concentration of stress on the screws themselves is particularly noticeable when pressurized, which, combined with material fatigue, often has a significant impact on their lifespan. Taking these factors into consideration, the question arises as to how to provide a new type of restraining and releasing device for this problem.

[0008] Therefore, the present invention further optimizes the mechanical structure to perform more stable binding and release operations on the battery tray frame. The inventor has conducted extensive research to solve this problem and created the present invention.

[0009] The present invention provides a restraining device for a battery tray rack, which has a very stable overall operation process, high reliability, long life and low cost, so as to achieve uniform and stable restraining (locking) processing and smooth release of the restraint. [Means for solving the problem]

[0010] One aspect of the present disclosure is a battery tray rack restraint device including a frame, a pressure module, at least one lock module, and a controller, the frame having a base, the pressure module having a thrust generating device and a pressure head, the pressure head being connected to the thrust generating device, the thrust generating device being assembled to the frame, the pressure head being capable of being driven to move toward or away from the battery tray rack, the at least one lock module having a slide table and a screw lock device, the screw lock device being assembled to the slide table, a pushrod is mounted to slide on the base and is connected to the pressure head, the controller is electrically connected to the pressure module and at least one of the locking modules, the controller drives the thrust generating device to bring the pressure head, accompanied by at least one of the locking modules, closer to the battery tray rack and push the battery tray rack, and then the controller controls the screw locking device to lock the screw to the battery tray rack to restrain it, or release the lock on the screw to release the restraint.

[0011] In addition, in the above aspect, at least one of the lock modules may further have a guide rod and a compression spring, the slide table may have a through hole, the guide rod may pass through the through hole and have one end connected to the pressure head, and the compression spring may be fitted into the guide rod, and both ends of the compression spring may abut against the through hole and the other end of the guide rod, respectively.

[0012] In the above aspect, the screw locking device may have a motor, a sleeve adapter, a sleeve, and a spring, the sleeve has a bolt socket hole and an adapter socket hole, the bolt socket hole is used for screw locking or releasing the screw lock on the battery tray rack, the sleeve adapter is inserted into the adapter socket hole, a radial gap exists between the adapter socket hole and the sleeve adapter, the sleeve adapter is connected to the motor, one end of the spring abuts against the motor, and the other end abuts against the sleeve.

[0013] In the above aspect, the screw locking device may further include a conical gasket and a fixing screw, the bolt socket hole of the sleeve has a conical bottom surface, the conical gasket is received in the bolt socket hole and abuts against the conical bottom surface, and the fixing screw is fitted into the bolt socket hole and the conical gasket to lock the sleeve adapter.

[0014] In the above aspect, the pressure sensor may further include a first position sensor, a second position sensor, a third position sensor, a reflection sensor, and a pressure sensor, wherein the first position sensor, the second position sensor, the third position sensor, the reflection sensor, and the pressure sensor are electrically connected to the controller, the first position sensor, the second position sensor, and the third position sensor are provided on the base, the first position sensor corresponds to a start position of the stroke of the pressure head, the second position sensor and the third position sensor correspond to limit positions at both ends of the operating stroke of the pressure head, the reflection sensor is provided on the pressure head and is used to detect the distance between the pressure head and the battery tray rack, the pressure sensor is provided on the frame and is used to detect the pressing force of the thrust generating device on the battery tray rack, and the controller may use this as a criterion for determining whether the pressure head has reached the end position of its stroke.

[0015] In addition, in the above-mentioned aspect, the pressure head may have at least one magnet, and after the controller controls the screw locking device to release the lock on the battery tray rack and release the restraint, the controller may drive the thrust generating device to move the pressure head in a direction away from the battery tray rack and extend it by using at least one of the magnets to push the battery tray rack.

[0016] Another aspect of the present disclosure is a battery tray rack restraint device used to apply pressure to a battery tray rack and maintain the pressure, or to release the restraint of the battery tray rack and remove the pressure, the battery tray rack having a pressure plate and at least one constant pressure bolt, the battery tray rack comprising a pressure module, at least one lock module, and a controller, the pressure module corresponding to the pressure plate of the battery tray rack, the at least one lock module corresponding to the at least one constant pressure bolt of the battery tray rack, the controller being electrically connected to the pressure module and the at least one lock module, and the battery tray This is a battery tray rack restraining device, characterized in that, when attempting to restrain the rack, the controller controls the pressure module to apply a thrust to the pressure plate and apply a clamping pressure to the battery tray rack, and the controller controls at least one of the locking modules to lock at least one of the constant pressure bolts to maintain the clamping pressure, and when attempting to release the restraint of the battery tray rack, the controller controls the pressure module to apply the thrust to the pressure plate, and after the controller controls at least one of the locking modules to unlock at least one of the constant pressure bolts, the controller controls the pressure module to cancel the thrust of the pressure plate.

[0017] In the above aspect, the present invention may further include a frame, the frame having a base, the pressure module having a thrust generating device and a pressure head, the pressure head being connected to the thrust generating device, the thrust generating device being attached to the frame, and the pressure head being moved toward or away from the battery tray rack, at least one of the locking modules having a slide table and a screw locking device, the screw locking device being assembled to the slide table, the slide table being provided so as to slide on the base and being connected to the pressure head, the controller driving the thrust generating device to bring the pressure head closer to the battery tray rack so as to accompany at least one of the locking modules and apply the thrust to the pressure plate, and the controller controlling the screw locking device to lock and restrain at least one of the constant pressure bolts, or unlock and release the restraint.

[0018] In addition, in the above aspect, at least one of the lock modules has a guide rod and a compression spring, the slide table has a through hole, the guide rod is fitted into the through hole and has one end connected to the pressure head, the compression spring is fitted into the guide rod, and both ends of the compression spring abut against the through hole and the other end of the guide rod, respectively, and the controller drives the thrust generating device to bring the pressure head closer to the battery tray rack by bringing the slide table along with it via the guide rod and the compression spring, and when the controller drives the thrust generating device to move the pressure head in a direction away from the battery tray rack, the pressure head directly thrusts the slide table.

[0019] In addition, in the above-mentioned aspect, the pressure head may further have at least one magnet, and when an attempt is made to release the restraint of the battery tray rack, the controller may control at least one of the locking modules to unlock the threads of at least one of the constant pressure bolts, and then the controller may drive the thrust generating device to move the pressure head in a direction away from the battery tray rack, and at least one of the magnets may magnetically attract the pressure plate to extend the battery tray rack. Effect of the Invention

[0020] In this way, compared with the conventional battery tray rack restraint device, the battery tray rack restraint device provided by the present invention has a feature that the pressure module first applies a thrust to the battery tray rack, and then fixes it with a screw lock to perform restraint. When releasing the restraint, first, a thrust is applied to the battery tray rack, and the screw lock is released, thereby releasing the restraint. Therefore, the present invention can greatly reduce the stress on the constant pressure bolt and the lock module, avoid stress concentration, ensure stable and reliable operation, and greatly extend the service life. [Brief description of the drawings]

[0021] [Figure 1A] FIG. 1 is a perspective view of a preferred embodiment of the battery tray rack restraint device of the present invention with a belt conveyor. [Figure 1B] FIG. 2 is a front view of a preferred embodiment of the battery tray rack restraint device of the present invention excluding the battery tray rack. [Diagram 2] FIG. 2 is a perspective view of a preferred embodiment of the battery tray rack restraint device of the present invention without the belt conveyor. [Diagram 3] FIG. 1 is a block diagram illustrating a preferred embodiment of the battery tray rack restraint device of the present invention. [Figure 4A]FIG. 2 is a perspective view of a pressure module and a lock module in a preferred embodiment of the battery tray rack restraint device of the present invention; [Figure 4B] FIG. 2 is a side view of the pressure module and lock module in the preferred embodiment of the battery tray rack restraint device of the present invention. [Diagram 5] 1 is a cross-sectional view showing a portion of a combined state of a pressure module and a lock set in a preferred embodiment of a battery tray rack restraint device of the present invention. FIG. [Figure 6A] FIG. 13 is a cross-sectional view of the restraining device of the screw locking device in the preferred embodiment of the battery tray rack of the present invention. [Figure 6B] FIG. 1 is an exploded perspective view of the screw locking mechanism in a preferred embodiment of the battery tray rack restraint device of the present invention after the electric motor has been removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The battery tray rack restraint device of the present invention will be described in detail in this embodiment. Here, the same components are given the same reference numerals in this specification. Furthermore, all drawings of the present invention are for illustrative purposes, and are not necessarily drawn to scale, and not all detailed configurations are shown in the drawings.

[0023] The present invention will now be described with reference to Figure 1A, which is a perspective view of a preferred embodiment of a battery tray rack restraining device of the present invention with a belt conveyor.

[0024] As shown in the figure, first, the battery tray rack T is pressurized using the battery tray rack restraining device of the present invention (hereinafter, sometimes simply referred to as "restraining device 1") to apply restraining force, and this restraining force is maintained to clamp and mold the soft-pack lithium battery in the battery tray rack T, thereby avoiding excessive expansion of the soft-pack lithium battery during the molding process. After the formation operation is completed, the restraining device 1 of the present invention can also be used to release the pressure on the battery tray rack T to release the restraining force.

[0025] Specifically, a battery tray rack T, which is restrained before molding and released after molding, is transported to a restraining device 1 by a belt conveyor C.

[0026] It should be noted that the belt conveyor C shown in Fig. 1 is installed only on one side of the restraint device 1, and therefore enters and exits from one side. However, in other embodiments of the present invention, a one-in-one-out (one entrance and one exit) system can be adopted, and the belt conveyor C can be provided on both sides of the restraint device 1.

[0027] Since the left side of the battery tray rack T abuts against the bottom of the left inside of the restraint device 1, when the pressure plate Tp is pressed by an external force, it can press the left side of the battery tray rack T via multiple pressure springs (not shown), and after pressure is applied, it can be locked with the constant pressure bolt Ts to maintain the pressure. That is, this is the restraint force provided by the restraint device 1.

[0028] In the specification, the left side of the battery tray rack T means the back side in Fig. 1, and the right side means the direction toward the side (nearby side) to which the reference numeral of the pressurizing module 2 is attached, and the left-right direction is determined in this manner. Also, the bottom of the restraint device 1 means the lowest position in the height direction perpendicular to the above-mentioned left-right direction. Similarly, the constant pressure bolt Ts can be unlocked to release the pressure.

[0029] The restraint device 1 mainly includes a pressure module 2 and a lock module 3. The pressure module 2 corresponds to the pressure plate Tp of the battery tray rack T, and is used to apply a thrust to the pressure plate Tp to form the basis of the restraint force.

[0030] The lock module 3 corresponds to the constant pressure bolt Ts of the battery tray rack T, and is used to lock the constant pressure bolt Ts to maintain pressure, or to release the pressure by unlocking the screw.

[0031] An embodiment of the present invention will be described with reference to Figures 1A, 1B, 2, and 3. Here, Figure 1B is a front view showing a preferred embodiment of a battery tray rack restraining device of the present invention excluding a belt conveyor. Also, Figure 2 is a perspective view showing a preferred embodiment of a battery tray rack restraining device of the present invention excluding a battery tray rack. Also, Figure 3 is a block diagram showing a preferred embodiment of a battery tray rack restraining device of the present invention.

[0032] As shown in Figures 1A to 3, the restraint device 1 of this embodiment includes a frame F and a controller 4 (see Figure 3), and the pressure module 2 and lock module 3 of Figure 1A etc. are attached to the frame F. The frame F has a base F1 on the side adjacent to the lock module 3, as shown in Figure 2.

[0033] Here, the shape of the frame F will be described. As shown in Fig. 1, the frame F comprises a pair of rods extending in the left-right direction. The frame F comprises a pair of plates connected to both the left and right ends of the pair of rods and extending in the height direction. The pair of plates also has a substantially rectangular shape extending in the front-rear direction perpendicular to both the left-right direction and the height direction so as to connect the left and right ends of the pair of rods extending in the left-right direction. By assembling these plates, a general framework of the frame F is formed, and the above-mentioned base F1 and the like are housed in this framework.

[0034] 2 and 3, lifting modules 6 are provided on both sides of the frame F in the front-rear direction to lift the battery tray rack T to a predetermined height and restrain or release the restraint. This isolates the battery tray rack T from the operating belt conveyor C.

[0035] As shown in FIG. 3, the controller 4 is electrically connected to the lifting module 6, the pressure module 2, and the locking module 3, and is used to control the operation of the lifting module 6, the pressure module 2, and the locking module 3 to perform operations of restraining or releasing the restrained state.

[0036] 1B, the pressure module 2 includes a thrust generating device 21 and a pressure head 22. In this embodiment, a screw jack reducer driven by a motor (not shown) is used as the thrust generating device 21. Of these, the screw jack reducer adopts a horizontal structure, and the direction of movement is changed from vertical lifting to horizontal movement.

[0037] Further, a thrust generating device 21 is attached to the frame F, and a thrust of up to 1500 kgf can be obtained. A pressure head 22 is connected to the end of the screw of the screw jack.

[0038] Therefore, the thrust generating device 21 can drive the pressure head 22 to move toward or away from the battery tray rack T. The thrust generating device 21 can use a hydraulic cylinder, an electric cylinder, or the like capable of generating thrust, in addition to a combination of a screw jack reducer and a motor.

[0039] 1B, the locking module 3 mainly includes a slide table 31 and a screw locking device 32, and the screw locking device 32 is mounted on the slide table 31. As shown in FIG.

[0040] The slide table 31 is installed so as to be able to slide on the base F1 by combining a guide rail (not shown) with a guide groove (not shown). At the same time, the slide table 31 is combined with the pressure head 22.

[0041] In this manner, the thrust generating device 21, the pressure head 22, the slide table 31, and the screw lock device 32 are interconnected, and the pressure module 2 and the lock module 3 can be interlocked.

[0042] Next, explanation will be made with reference to Figures 4A, 4B and 5. Here, Figure 4A is a perspective view showing a pressure module and a lock module in a preferred embodiment of the battery tray rack restraint device of the present invention. Figure 4B is a side view of the pressure module and the lock module in a preferred embodiment of the battery tray rack restraint device of the present invention. Also, Figure 5 is a cross-sectional view showing the coupled state of the pressure module and the lock set in the preferred embodiment of the battery tray rack restraint device of the present invention.

[0043] As shown in FIGS. 4A and 4B, the locking module 3 further includes a guide rod 33 and a compression spring 34 in addition to the slide table 31 and the screw locking device 32, and the slide table 31 further includes a through hole 311 shown in FIG.

[0044] A more detailed description will be given with reference to Fig. 5. A guide rod 33 formed in a substantially cylindrical shape and extending in the left-right direction passes through the through hole 311, one end of which is connected to the pressure head 22, and is capable of moving in conjunction with the pressure head 22 by being pulled by the pressure head 22.

[0045] Further, the compression spring 34 is fitted so as to be wound around the guide rod 33, and both ends of the spring 34 are in contact with the inside of the through hole 311 and the other end of the guide rod 33, respectively. Therefore, when the guide rod 33 moves toward the battery tray rack T in conjunction with the pressure head 22 (see Figure 1B), the compression spring 34 assumes a compressed state, and the elastic restoring force of the compression spring 34 after being compressed allows it to move toward the battery tray rack T along with the slide table 31.

[0046] Therefore, the controller 4 only needs to drive the thrust generating device 21, and the pressure head 22 can drive the slide table 31 to approach the battery tray rack T via the guide rod 33 and the compression spring 34, and the compression spring 34 can be used again as a cushioning material to absorb the impact force.

[0047] Meanwhile, the controller 4 can also drive the thrust generating device 21 to move the pressure head 22 away from the battery tray rack T, and the pressure head 22 directly presses the slide table 31 to drive the lock module 3 to return to its initial position.

[0048] As shown in FIG. 3, the restraint device 1 further comprises five sensors electrically connected to the controller 4 . The five sensors are a first position sensor 51, a second position sensor 52, a third position sensor 55, a reflection sensor 53, and a pressure sensor 54, respectively.

[0049] Specifically, the first position sensor 51, the second position sensor 52, and the third position sensor 55 may be cutoff switches, the reflective sensor 53 may be a reflective switch, and the pressure sensor 54 may be a load cell.

[0050] 2, to explain further, the first position sensor 51 is disposed on the side of the base F1 closer to the thrust generating device 21, and this position corresponds to the starting position of the stroke of the pressure head 22.

[0051] The second position sensor 52 is disposed on the battery tray rack T side of the base F1 as shown in FIG. 1B. This setting corresponds to the limit position of the pressure head 22. If the operation does not stop even after passing the second position sensor 52, the lifter screw (not shown) will detach from the reducer.

[0052] As shown in FIG. 2, the third position sensor 55 is disposed on the base F1 on one side (right side) of the thrust generating device 21 relative to the first position sensor 51. By disposing it in this manner, it corresponds to the other limit position of the pressure head 22, and if the operation does not stop after exceeding the third position sensor 55, the lock module 3 will collide with the reducer.

[0053] Therefore, the second position sensor 52 and the third position sensor 55 are used to control the limit positions of the travel stroke of the pressure head 22, and when the second position sensor 52 or the third position sensor 55 detects the pressure head 22, the controller 4 immediately stops driving the thrust generating device 21 to avoid collision or separation of components.

[0054] The reflection sensor 53 is provided in the pressure head 22 and is used to detect the distance between the pressure head 22 and the battery tray rack T, specifically, the distance between the pressure head 22 and the pressure plate Tp.

[0055] The controller 4 can control the speed at which the pressure head 22 is fed in response to the detection result of the reflection sensor 53, that is, control the speed at which the pressure head 22 is fed in such a way that the pressure head 22 starts to decelerate when the pressure head 22 approaches the pressure plate Tp to a certain distance.

[0056] Also, as shown in FIG. 1B , the pressure sensor 54 is arranged on the frame F, specifically, on the opposite side of the frame F from the pressurizing module 2, so that it is actually sandwiched between the frame F and the battery tray rack T and is used to detect the pressing force of the battery tray rack T by the thrust generating device 21.

[0057] When the pressing force reaches the set value, the controller 4 stops the operation of the thrust generating device 21 and sets the position as the end position of the stroke. However, the end position of the stroke cannot exceed the limit position where the second position sensor 52 is located.

[0058] As shown in FIG. 4A, one or more magnets 221 may be attached to the pressure head 22.

[0059] The effect is that when the controller 4 in FIG. 3 controls the screw locking device 32 to loosen the screw lock on the battery tray rack T in FIG. 1B and release the constraint, and then the controller 4 drives the thrust generating device 21 (FIGS. 1B, 4B) to move the pressure head 22 away from the battery tray rack T, the magnet 221 in FIG. 4A magnetically attracts the pressure plate Tp, stretching the battery tray rack T and increasing the distance between the battery separators (not shown) on the battery tray rack T, making it easier to replace the battery separators.

[0060] Finally, a description will be given with reference to Figures 1B, 6A and 6B at the same time. Here, Figure 6A is a cross-sectional view of the screw locking device in the preferred embodiment of the restraining device of the battery tray rack of the present invention. Also, Figure 6B is an exploded perspective view of the screw locking device in the preferred embodiment of the restraining device of the battery tray rack of the present invention after the electric motor has been removed.

[0061] As shown in FIG. 1B, the screw locking device 32 specifically includes an electric motor 321, a sleeve adapter 322, a sleeve 323, and a spring 325 shown in FIG. 6A, and the two end surfaces of the sleeve 323 each have a bolt socket hole 326 and an adapter socket hole 327.

[0062] 6A and 6B is used to connect to the constant voltage bolt Ts of the battery tray rack T of FIG. 1B, and the adapter socket hole 327 shown in FIG. 6A is used to connect to fit the sleeve adapter 322.

[0063] Furthermore, a radial gap G is formed between the adapter socket hole 327 and the sleeve adapter 322 .

[0064] In other words, since the size design of the adapter socket hole 327 is larger than the size design of the sleeve adapter 322, there is some room for the movement of the sleeve 323 relative to the sleeve adapter 322, and the sleeve 323 can swing according to the position of the constant pressure bolt Ts, making the butting process smoother.

[0065] In addition, the sleeve adapter 322 is connected to the motor 321, and the spring 325 is fitted to the sleeve adapter 322, with one end of the spring 325 abutting against the motor 321 and the other end abutting against the sleeve 323. Therefore, after the sleeve 323 is separated from the constant pressure bolt Ts of Fig. 1B, the spring 325 of Fig. 6A can reset the sleeve 323 to maintain a substantially horizontal state, which is useful for coupling the constant pressure bolt Ts of the next battery tray rack T.

[0066] The screw locking device 32 shown in FIG. 1B further includes a conical gasket (tapered washer) 324 and a fixing screw 328, as shown in FIG. 6B, and the bolt socket hole 326 of the sleeve 323 further has a conical bottom surface (tapered bottom surface) 329.

[0067] Specifically, the conical gasket 324 is received in the bolt socket hole 326 and abuts against the conical bottom surface 329. The conical gasket 324 and the conical bottom surface 329 are used to swing the sleeve 323 according to the position of the constant pressure bolt Ts and to facilitate the operation of butting the sleeve 323 and the constant pressure bolt Ts together.

[0068] The degree of margin for swinging can be increased or decreased by designing the radial gap G to a different size. The fixing screw 328 passes through the bolt socket hole 326 and the conical gasket 324 and is locked into the sleeve adapter 322.

[0069] 1A and 1B, the operation flow of the restraining operation of the embodiment of the present invention will be described. When the battery tray rack T to be formed enters the restraining device 1 from the belt conveyor C, the controller 4 controls the lifting module 6 to lift the battery tray rack T, and the pressure head 22 corresponds to the pressure plate Tp, and the sleeve 323 corresponds to the constant pressure bolt Ts.

[0070] Next, the controller 4 drives the thrust generating device 21 to move the pressure head 22 in the direction of the battery tray rack T, and in synchronization therewith, the lock module 3 is also driven forward. Here, the sleeve 323 is first attached so as to fit onto the constant pressure bolt Ts, and the compression spring 34 is compressed to apply a force to the slide table 31, so that the sleeve 323 tightly covers the constant pressure bolt Ts.

[0071] Then, the pressure head 22 comes into contact with the pressure plate Tp, and the thrust generating device 21 continues to move forward to push the pressure plate Tp, thereby applying a thrust Fp to the pressure plate Tp.

[0072] A thrust force Fp is applied to the pressure plate Tp to apply a clamping (sandwiching) pressure to the battery tray rack T until the pressing force detected by the pressure sensor 54 reaches a set value. Then, the controller 4 determines that the stroke end position is reached and simultaneously stops the operation of the thrust generating device 21.

[0073] However, in the process of moving the pressure head 22, the pressure-receiving spring (not shown) of the battery tray rack T is compressed by the thrust Fp, and the soft-pack lithium battery is subjected to the clamping pressure and formed.

[0074] Furthermore, the controller 4 maintains the clamp pressure by driving the electric motor 321 to lock the constant pressure bolt Ts in synchronization, and also maintains the pressure receiving spring (not shown) in a compressed state to restrain it.

[0075] After the screw locking is completed, the controller 4 drives the thrust generating device 21 to move the pressure head 22 together with the lock module 3 in a direction away from the battery tray rack T, and the pressure head 22 stops when it reaches the position of the first position sensor 51.

[0076] The operational flow when releasing the constraint (bind) in this embodiment is almost the same as the operational flow when binding, but what is particularly important to note is that when the pressure head 22 contacts the pressure plate Tp, the pressure module 2 applies a thrust force slightly larger than the thrust force Fp to the pressure plate Tp.

[0077] At this time, the tensile stress applied to the constant pressure bolt Ts can be removed first. Next, the controller 4 drives the electric motor 321 to release the screw lock of the constant pressure bolt Ts.

[0078] At the same time, the controller 4 drives the thrust generating device 21 to gradually separate the pressure head 22 together with the lock module 3 from the battery tray rack T. At this time, the clamping pressure is slowly released, and the pressure spring returns to its original state and is released. At the same time, the battery tray rack T is stretched by the magnet 221 (see FIG. 4) on the pressure head 22.

[0079] When the stretched distance reaches its limit, the magnet 221 also automatically separates from the pressure plate Tp, and the pressure head 22 continues to retreat until it reaches the position of the first position sensor 51, after which it stops, completing the operation of releasing the constraint.

[0080] It should be noted that the above-described embodiment is merely an example for the convenience of explanation, and the scope of the rights of the present invention is not limited to the above-described embodiment, but is determined based on the scope of the patent application. [Explanation of symbols]

[0081] 1 restraint device 2 Pressurization module 3 Lock Module 4. Controller 6 Lifting Module 21 Thrust generating device 22 Pressure head 31 Slide Table 32 Screw locking device 33 Guide rod 34 Compression spring 51 First position sensor 52 Second Position Sensor 53 Reflective Sensor 54 Pressure Sensor 55 3rd position sensor 221 Magnet 311 Through hole 321 Electric motor 322 Sleeve Adapter 323 Sleeve 324 Cone Gasket 325 Spring 326 Bolt socket hole 327 Adapter socket hole 328 Fixing screw 329 Cone-shaped base C. Conveyor belt G Radial gap F Frame F1 Pedestal Fp thrust T Battery Tray Rack Tp Pressure Plate Ts constant pressure bolt

Claims

1. A battery tray rack restraint device comprising a frame, a pressure module, at least one lock module, and a controller, The frame has a base, The pressure module includes a thrust generating device and a pressure head. The pressure head is connected to the thrust generating device, the thrust generating device is assembled to the frame, and the pressure head can be driven to move toward or away from the battery tray rack; At least one of the locking modules includes a slide table and a screw locking device; The screw lock device is assembled to the slide table, and the slide table is provided so as to slide on the base and is connected to the pressure head; the controller is electrically connected to the pressurizing module and to at least one of the locking modules; The controller drives the thrust generating device to make the pressure head, carrying at least one of the lock modules, approach the battery tray rack and push the battery tray rack, A battery tray rack restraining device, characterized in that the controller controls the screw locking device to lock the screw to the battery tray rack to restrain it, or release the lock on the screw to release the restraint.

2. At least one of the locking modules further comprises a guide rod and a compression spring; The slide table has a through hole, The guide rod passes through the through hole, and one end of the guide rod is connected to the pressure head.

2. The battery tray rack restraint device according to claim 1, wherein the compression spring is fitted onto the guide rod such that both ends of the compression spring abut against the through hole and the other end of the guide rod, respectively.

3. The screw locking device includes an electric motor, a sleeve adapter, a sleeve, and a spring. the sleeve has a bolt socket hole and an adapter socket hole; The bolt socket holes are used to screw lock or unlock the battery tray rack; The sleeve adapter is inserted into the adapter socket hole, a radial gap exists between the adapter socket hole and the sleeve adapter; the sleeve adapter connects to the motor; 2. The battery tray rack restraint device according to claim 1, wherein one end of the spring abuts against the electric motor and the other end abuts against the sleeve.

4. The screw locking device further comprises a conical gasket and a fixing screw; the bolt socket hole in the sleeve has a conical base; The conical gasket is received in the bolt socket hole and abuts against the conical bottom surface; 4. The battery tray rack restraint device of claim 3, wherein the fixing screw is engaged with the bolt socket hole and the conical gasket to lock the sleeve adapter.

5. further comprising a first position sensor, a second position sensor, a third position sensor, a reflection sensor, and a pressure sensor; the first position sensor, the second position sensor, the third position sensor, the reflection sensor, and the pressure sensor are electrically connected to the controller; the first position sensor, the second position sensor, and the third position sensor are provided on the base; the first position sensor corresponds to a start position of a stroke of the pressure head; the second position sensor and the third position sensor correspond to both end limit positions of an operating stroke of the pressure head, The reflection sensor is provided on the pressure head and is used to detect the distance between the pressure head and the battery tray rack; The battery tray rack restraint device according to claim 1, characterized in that the pressure sensor is provided on the frame and is used to detect the pressing force of the battery tray rack by the thrust generating device, which serves as a reference for the controller to determine whether the pressure head has reached the end position of its stroke.

6. the pressure head having at least one magnet; After the controller controls the screw locking device to unlock the battery tray rack and release the restraint, 2. The battery tray rack restraint device of claim 1, wherein the controller drives the thrust generating device to move the pressure head in a direction away from the battery tray rack and extend the pressure head to push against the battery tray rack using at least one of the magnets.

7. used to apply pressure to and maintain pressure on a battery tray rack or to release the pressure from the battery tray rack; A battery tray rack restraint device, the battery tray rack having a pressure plate and at least one constant pressure bolt, A pressurizing module; at least one lock module; A controller. the pressure module corresponds to the pressure plate of the battery tray rack; At least one of the locking modules corresponds to at least one of the constant pressure bolts of the battery tray rack; the controller is electrically connected to the pressurizing module and to at least one of the locking modules; When the battery tray rack is to be restrained, the controller controls the pressure module to apply a thrust to the pressure plate to apply a clamping pressure to the battery tray rack, and the controller controls at least one of the lock modules to lock at least one of the constant pressure bolts to maintain the clamping pressure; When the battery tray rack is to be released from the restraint, the controller controls the pressure module to apply the thrust to the pressure plate; and after the controller controls at least one of the locking modules to unlock at least one of the constant pressure bolts, the controller controls the pressure module to cancel the thrust of the pressure plate; The battery tray rack restraint device comprises: Further comprising a frame, The frame has a base, The pressure module includes a thrust generating device and a pressure head. the pressure head is connected to the thrust generating device, the thrust generating device is attached to the frame, and the pressure head is moved toward or away from the battery tray rack; At least one of the locking modules includes a slide table and a screw locking device; The screw locking device is assembled to the slide table, the slide table is provided to slide on the base and is connected to the pressure head; The controller drives the thrust generating device to bring the pressure head closer to the battery tray rack so as to bring at least one of the lock modules into the battery tray rack and apply the thrust to the pressure plate, and the controller controls the screw locking device to lock and restrain at least one of the constant pressure bolts, or unlock and release the restraint.

8. At least one of the locking modules includes a guide rod and a compression spring; The slide table has a through hole, The guide rod is fitted into the through hole, and one end of the guide rod is connected to the pressure head. The compression spring is fitted to the guide rod, and both ends of the compression spring abut against the through hole and the other end of the guide rod, respectively; The controller drives the thrust generating device, and the pressure head is moved toward the battery tray rack by the guide rod and the compression spring, while the slide table is brought along with the pressure head. The battery tray rack restraint device according to claim 7, characterized in that when the controller drives the thrust generating device to move the pressure head in a direction away from the battery tray rack, the pressure head directly thrusts the slide table.

9. the pressure head further comprises at least one magnet; When the battery tray rack is to be released from the restraint, the controller controls at least one of the locking modules to unlock the screw of at least one of the constant pressure bolts, The battery tray rack restraining device of claim 7, wherein the controller drives the thrust generating device to move the pressure head in a direction away from the battery tray rack, and at least one of the magnets magnetically attracts the pressure plate to extend the battery tray rack.

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