Soft package battery restraining tray and formation equipment

Abstract

This invention relates to the field of battery formation technology and provides a soft-pack battery formation device, including a charging and discharging component, a temperature control component, a measurement and control component, and a restraint tray. The restraint tray 1 includes a front end plate, a rear end plate, connecting guide posts, and separators. It also includes a driving component, a spacing control component, sliding posts, a heat dissipation component, and a heat dissipation sleeve. The driving component drives the spacing control guide block, causing the spacing control slide to move multiple separators synchronously towards the center, reducing the distance between adjacent separators by an equal amount, ensuring that each soft-pack battery bears a consistent clamping force, solving the problem of uneven pressure at the end and center of traditional trays, and is compatible with batteries of different thicknesses. The heat dissipation component utilizes the sliding cooperation between the circulating heat dissipation pipe and the heat dissipation sleeve, as well as the inclined chamfer design of the separators, to quickly conduct and dissipate the heat generated by the soft-pack battery, ensuring uniform force and stable temperature distribution of the battery during the formation process, achieving efficient fixation, uniform heat dissipation, and adaptive protection of the soft-pack battery during the formation process.

Description

Technical Field

[0001] This invention belongs to the field of battery formation technology, and particularly relates to a soft-pack battery restraint tray and formation equipment. Background Technology

[0002] Soft-pack batteries, also known as soft-pack lithium batteries, typically refer to lithium batteries encapsulated in an aluminum-plastic composite film casing. A restraint tray is a specialized tooling device used to fix and support individual battery cells during the production of soft-pack batteries, primarily used in the battery formation, aging, or testing stages. Formation equipment is crucial for the initial charge-discharge activation of lithium-ion batteries (including soft-pack batteries). By precisely controlling the electrochemical reaction process, it activates electrode materials, stabilizes the SEI film (solid electrolyte interface film), and performs preliminary screening of battery performance.

[0003] The existing formation equipment's restraint tray includes a tray frame, screw assembly, intermediate partition assembly, pressure plate, and locking assembly. After the tray is filled with batteries, the restraint machine presses the restraint tray. The pressure plate pushes the intermediate partition to press the batteries tightly. The tray is then transported to an automated warehouse via a logistics line for resting. After completion, it is transported to the work station via the logistics line. The restraint machine depressurizes the restraint tray, and the pressure plate moves the intermediate partition to the open position by tightening the steel wire rope. When changing batteries of different sizes, only the sub-pressure plate needs to be replaced. Loosen the set screws and pull out the sub-pressure plate from the side for replacement.

[0004] While existing restraint trays can secure different types of pouch cells, they cannot ensure uniform force distribution on each cell during the securing process. This makes the pouch cells prone to damage or displacement during the formation process due to stress issues, which increases the defect rate. Furthermore, pouch cells release a large amount of heat during formation, and if heat is not dissipated in time, it can also lead to damage due to heat buildup.

[0005] Therefore, in view of the above situation, there is an urgent need to develop a soft-pack battery restraint tray and formation equipment to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a soft-pack battery restraint tray and formation device to solve the problems in the background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A soft-pack battery restraint tray includes a front end plate, a rear end plate, connecting guide posts, and partitions. The front end plate is connected to the rear end plate as a whole via the connecting guide posts. The partitions are distributed between the front end plate and the rear end plate and are slidably connected to the connecting guide posts. The tray also includes:

[0009] A drive assembly, one end of which is mounted on the front end plate, and the other end of which is located between the partition and the front end plate and is slidably connected to the connecting guide post;

[0010] A distance control assembly is located between a front end plate and a rear end plate, with its two ends slidably mounted on the front end plate and the rear end plate, respectively. One side of the distance control assembly is slidably engaged with the other end of a drive assembly. The distance control assembly is provided with distance control grooves that slidably engage with sliding posts fixed at both ends of the top of the partition plate. One distance control groove located in the middle of the distance control assembly is a straight groove. The distance control grooves symmetrically distributed along the straight grooves and located at both ends of the distance control assembly are inclined grooves. The inclination angles of the multiple inclined grooves located on any side of the straight grooves increase sequentially with equal angular interval differences.

[0011] A heat dissipation assembly, one end of which is fixed to the rear end plate, and the other end of which extends between the front end plate and the rear end plate and slides in cooperation with a heat dissipation sleeve fixed on the partition plate. The inner wall of the heat dissipation sleeve slides in cooperation with the heat dissipation assembly, and the intersection of the outer wall of the heat dissipation sleeve and the surface of the partition plate is designed with an inclined chamfer.

[0012] As a further technical solution of the present invention, the distance control assembly includes a distance control guide post, a distance control slide, a connecting block, a spring, a distance control seat, and a distance control guide block. The distance control guide post is respectively installed on the end faces of the front end plate and the rear end plate that are close to each other. The two ends of the distance control guide post are symmetrically and slidably mounted with distance control slides. A connecting block is fixed in the middle of the distance control guide post. A spring is installed between the connecting block and the distance control slide. A distance control seat is installed between the distance control slides located on the same side and respectively mounted on the front end plate and the rear end plate. The distance control seat has distance control grooves distributed on it in the same number as the partitions. A distance control guide block is fixed on the end faces of the two distance control slides located on one side of the front end plate that are close to each other. The distance control guide block is a right-angled trapezoidal block structure, and both distance control guide blocks are slidably engaged with one end of the drive assembly.

[0013] As a further technical solution of the present invention, the driving assembly includes a threaded sleeve, a screw, a locking screw head, a driving seat, and a driving guide block. The threaded sleeve is fixed in the middle of the front end plate. A threaded groove is formed on the inner wall of the threaded sleeve to be threadedly connected to the screw. One end of the screw is rotatably connected to the driving seat. The driving seat is slidably mounted on the connecting guide post and located between the front end plate and the rear end plate. The top of the driving seat is fixed with a driving guide block that slides with the distance control guide block. A locking screw head is fixed on the other end of the screw.

[0014] As a further technical solution of the present invention, the end face of the drive guide block that slides with the distance control guide block is an inclined end face, and a limit protrusion is fixed on one side of the distance control guide block. The limit protrusion intermittently cooperates with the drive guide block and controls the movement stroke of the drive guide block.

[0015] As a further technical solution of the present invention, the heat dissipation assembly includes a heat dissipation box, a circulating heat dissipation pipe, and heat transfer strips. The heat dissipation box is fixed on the rear end plate. A liquid storage tank, a circulating pump, and a cooling device are respectively arranged inside the heat dissipation box. One end of the circulating heat dissipation pipe is connected to the output end of the liquid storage tank and the circulating pump, respectively. The input end of the circulating pump is connected to the liquid storage tank. The cooling device is installed in the liquid storage tank and cools the heat dissipation liquid inside. The other end of the circulating heat dissipation pipe extends between the front end plate and the rear end plate and slides with a heat dissipation sleeve on the partition plate. Heat transfer strips are horizontally distributed on the outer wall of the other end of the circulating heat dissipation pipe. The heat transfer strips slide with a connecting groove opened on the inner wall of the heat dissipation sleeve.

[0016] As a further technical solution of the present invention, grooves are provided in the middle of both sides of the partition, and mounting sleeves are distributed in the grooves. The inner wall of the mounting sleeves is fixed with mounting grooves for installing the elastic clamping components.

[0017] As a further technical solution of the present invention, the elastic clamping assembly includes a clamping plate, a clamping slider, a fixing block, a second spring, a guide stud, and a guide groove. The clamping plate is distributed on both sides of the partition, and the side wall of the clamping plate intermittently slides in contact with the inner wall of the groove. The clamping slider is fixed on the inner side of the clamping plate, and one end of the clamping slider is slidably mounted on the fixing block. The fixing block is fixed in the mounting sleeve, and a guide stud is mounted on the fixing block. The guide stud slides in cooperation with the guide groove horizontally opened on the clamping slider. The second spring is installed in the mounting sleeve, and both ends of the second spring are respectively connected to the clamping plates distributed on both sides of the partition.

[0018] A pouch cell formation apparatus includes a charge / discharge assembly for providing the power required for the formation of the pouch cell, a temperature control assembly for controlling the ambient temperature during the formation process, a measurement and control assembly for monitoring various data generated during the formation process of the pouch cell, and a restraint tray as described above.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] Through the innovative design of the drive component, spacing control component, heat dissipation component and elastic clamping component, the pouch battery achieves efficient fixation, uniform heat dissipation and adaptive protection during the formation process: the drive component drives the spacing control guide block, so that the spacing control slide groove drives multiple separators to slide synchronously towards the center, reducing the distance between adjacent separators by an equal amount, ensuring that each pouch battery bears a consistent clamping force, solving the problem of uneven pressure at the end and center of the traditional tray, and is compatible with batteries of different thicknesses;

[0021] The heat dissipation component utilizes the sliding fit between the circulating heat dissipation pipe and the heat dissipation sleeve, as well as the inclined chamfered design of the separator, to quickly conduct and dissipate the heat generated by the soft-pack battery, thereby improving heat dissipation efficiency. The elastic clamping component adaptively adjusts the clamping pressure through the elastic force of the spring, buffering external impacts and preventing the battery from being damaged by overvoltage or shaking. At the same time, it promotes the uniform conduction of heat to the separator, ensuring that the battery is subjected to uniform force and has a stable temperature distribution during the formation process.

[0022] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a first-view structural schematic diagram of the soft-pack battery restraint tray provided in an embodiment of the present invention.

[0024] Figure 2 This is a second-view structural schematic diagram of the soft-pack battery restraint tray provided in an embodiment of the present invention.

[0025] Figure 3 for Figure 1 A schematic diagram of the main frame of the central restraint tray.

[0026] Figure 4 for Figure 2 A schematic diagram of the main frame of the central restraint tray.

[0027] Figure 5 for Figure 4 A schematic diagram of the structure after removing the front-end board.

[0028] Figure 6 for Figure 5 Enlarged view of the structure of the control slide, control guide block and drive guide block.

[0029] Figure 7 for Figure 2 A schematic diagram of the structure of the partition plate and the components mounted on it.

[0030] Figure 8 for Figure 7 A schematic diagram of the structure of the partition plate.

[0031] Figure 9 for Figure 3A schematic diagram of the heat dissipation component.

[0032] Figure 10 for Figure 7 A schematic diagram of the structure of the medium elastic clamping assembly.

[0033] Figure 11 for Figure 10 Enlarged view of the structure of the middle clamping slider and fixing block.

[0034] Reference numerals: 100-Front end plate, 200-Rear end plate, 300-Connecting guide post, 400-Baffle plate, 410-Sliding post, 420-Heat dissipation sleeve, 421-Connecting slide, 422-Inclined chamfer, 430-Mounting sleeve, 431-Mounting slide, 500-Distance control assembly, 510-Distance control guide post, 520-Distance control slide, 530-Connecting block, 540-Spring 1, 550-Distance control seat, 560-Distance control slide, 570-Distance control guide block 580-Limiting protrusion, 600-Drive assembly, 610-Threaded sleeve, 620-Screw, 630-Locking screw head, 640-Drive seat, 650-Drive guide block, 700-Heat dissipation assembly, 710-Heat dissipation box, 720-Circulating heat dissipation pipe, 730-Heat transfer strip, 800-Elastic clamping assembly, 810-Clamping plate, 820-Clamping slider, 830-Fixing block, 840-Spring II, 850-Guide stud, 860-Guide groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0037] like Figures 1 to 9 As shown, a soft-pack battery restraint tray provided as an embodiment of the present invention includes a front end plate 100, a rear end plate 200, a connecting guide post 300, and a partition 400. The front end plate 100 is connected to the rear end plate 200 as a whole through the connecting guide post 300. The partition 400 is distributed between the front end plate 100 and the rear end plate 200 and is slidably connected to the connecting guide post 300. The tray also includes:

[0038] A drive assembly 600, one end of which is mounted on the front end plate 100, and the other end of which is located between the partition plate 400 and the front end plate 100 and is slidably connected to the connecting guide post 300.

[0039] A distance control component 500 is located between a front end plate 100 and a rear end plate 200, with both ends of the distance control component 500 slidably mounted on the front end plate 100 and the rear end plate 200, respectively. One side of the distance control component 500 is slidably engaged with the other end of a drive component 600. The distance control component 500 is provided with distance control grooves 560 that slidably engage with sliding posts 410 fixed at both ends of the top of the partition plate 400. A distance control groove 560 located in the middle of the distance control component 500 is preferably a straight groove. The distance control grooves 560 symmetrically distributed along the straight grooves and located at both ends of the distance control component 500 are preferably inclined grooves. The inclination angles of multiple inclined grooves located on any side of the straight grooves increase sequentially with equal angular intervals, thereby forming an inclination distribution with equal increments.

[0040] The pouch battery is located between two separators 400. The drive assembly 600 rotates to move the other end of the spacing control assembly 500 away from the separators 400. The spacing control assembly 500 synchronously moves the spacing control chute 560. The spacing control chute 560, through movement and cooperation with the sliding column 410, can cause multiple separators 400 between the front end plate 100 and the rear end plate 200 to slide towards the center between them. By sliding towards the center between the front end plate 100 and the rear end plate 200, the spacing between adjacent separators 400 can be reduced by an equal amount. This not only completes the spacing of the pouch battery... The clamping and fixing mechanism ensures that the pouch cells are stably positioned between the two separators 400 during the formation process, preventing positional displacement due to vibration or external forces. This provides a fundamental guarantee for the consistency and reliability of pouch cell performance. Furthermore, it allows multiple pouch cells to be subjected to the same clamping force, completely solving the problem of uneven battery force caused by pressure differences between the ends and the middle in traditional restraint trays. This effectively avoids the risk of end cells deforming due to overpressure and middle cells shifting due to insufficient clamping, making the restraint tray compatible with pouch cells of different thicknesses. It allows for the effective fixing of various pouch cell models without hardware replacement, greatly improving the versatility and practicality of the restraint tray.

[0041] A heat dissipation assembly 700 is provided, one end of which is fixed to the rear end plate 200, and the other end of which extends between the front end plate 100 and the rear end plate 200 and slides in cooperation with a heat dissipation sleeve 420 fixed on the partition plate 400. The inner wall of the heat dissipation sleeve 420 slides in cooperation with the heat dissipation assembly 700, and the intersection of the outer wall of the heat dissipation sleeve 420 and the surface of the partition plate 400 is designed with an inclined chamfer 422.

[0042] The heat dissipation component 700 can control the circulation of the heat dissipation fluid. The circulating heat dissipation fluid can directly contact the inner wall of the heat dissipation sleeve 420, which can increase its contact area with the separator 400, thereby improving the heat dissipation performance of the restraint tray for the pouch battery. Secondly, the design of the inclined chamfer 422 can quickly guide the heat transferred from the pouch battery to the separator 400, so that it can quickly converge on the heat dissipation sleeve 420, thereby improving the heat exchange efficiency between the heat dissipation sleeve 420 and the heat dissipation component 700, and thus improving the heat dissipation quality and efficiency of the restraint tray.

[0043] In a preferred embodiment, both the separator 400 and the heat dissipation sleeve 420 are preferably made of a metal material with good heat dissipation performance, so as to ensure that the soft-pack battery between the separator 400 and the heat dissipation sleeve 420 can achieve rapid heat exchange with the heat dissipation component 700, thereby achieving rapid heat dissipation of the soft-pack battery.

[0044] like Figures 3 to 8 As shown, in a preferred embodiment of the present invention, the distance control assembly 500 includes a distance control guide post 510, a distance control slide 520, a connecting block 530, a spring 540, a distance control seat 550, and a distance control guide block 570. The distance control guide post 510 is respectively installed on the end faces of the front end plate 100 and the rear end plate 200 that are close to each other. The distance control slide 520 is symmetrically slidably installed at both ends of the distance control guide post 510. The connecting block 530 is fixed in the middle of the distance control guide post 510. A spring 540 is installed between the connecting block 530 and the distance control slide 520. The distance control seat 550 is installed between the distance control slides 520 located on the same side and respectively installed on the front end plate 100 and the rear end plate. The distance control seat 550 has a number of... A consistent distance control groove 560 is provided. Two distance control slides 520 located on one side of the front panel 100 are each fixed with a distance control guide block 570 on their adjacent end faces. The distance control guide block 570 is preferably a right-angled trapezoidal block structure, and both distance control guide blocks 570 are slidably engaged with one end of the drive assembly 600. In the initial state, the two distance control guide blocks 570 are close to each other. The two distance control guide blocks 570 drive the two distance control seats 550 to be close to each other through the distance control slides 520. The two distance control seats 550 can drive the slide column 410 and multiple partitions 400 to be far apart by driving the distance control groove 560 to be close to each other, so that the space between two adjacent partitions 400 can meet the needs of taking out the soft pack battery, improving the practicality and convenience of the restraint tray.

[0045] The drive assembly 600 operates and drives the two distance control guide blocks 570 to move away from each other. The two distance control guide blocks 570 drive their respective distance control slides 520 and distance control seats 550 to move away from each other. The two distance control seats 550 and their distance control grooves 560 can drive multiple separators 400 to move towards the center through the sliding column 410, thereby reducing the distance between two adjacent separators 400 by an equal amount. This not only completes the clamping and fixing of the pouch battery, ensuring that the pouch battery can be stably placed between the two separators 400 during the formation process, avoiding its positional displacement due to vibration or external force, and providing a basic guarantee for the consistency and reliability of pouch battery performance; it also allows multiple pouch batteries to be subjected to the same clamping force, completely solving the problem of uneven battery force caused by the pressure difference between the end and the middle of the traditional restraint tray, and effectively avoiding the risk of end batteries deforming due to overpressure and middle batteries displacing due to insufficient clamping.

[0046] In a preferred embodiment, the two ends of the spring 540 are respectively mounted on the connecting block 530 and the distance control slide 520. As the two distance control slides 520 move away from each other, the spring is in a stretched state. The spring, through its own elastic force, can drive the distance control guide block 570 to always slide and cooperate with the drive assembly 600 through the distance control slide 520, ensuring that the drive assembly 600 can effectively and continuously drive the distance control assembly 500, thereby effectively and continuously adjusting the spacing of the multiple partitions 400 and extending the service life of the restraint tray.

[0047] like Figures 3 to 8As shown, in a preferred embodiment of the present invention, the drive assembly 600 includes a threaded sleeve 610, a screw 620, a locking screw head 630, a drive seat 640, and a drive guide block 650. The threaded sleeve 610 is fixed to the middle of the front end plate 100. A threaded groove is formed on the inner wall of the threaded sleeve 610 for threaded connection with the screw 620. One end of the screw 620 is rotatably connected to the drive seat 640. The drive seat 640 is slidably mounted on the connecting guide post 300 and located between the front end plate 100 and the rear end plate 200. The top of the drive seat 640 is fixed with a drive guide block 650 that slidably engages with the distance control guide block 570. The other end of the screw 620 is fixed with a locking screw head 630. The locking screw head 630 drives the screw 620 to rotate on the drive seat 640. The screw 620 rotates through the threaded sleeve 610... The threaded connection allows the drive seat 640 to slide on the connecting guide post 300. The drive seat 640 then moves the drive guide block 650. Through movement and cooperation with the spring 540, the drive guide block 650 can move the two distance control guide blocks 570 away from or closer to each other, thereby reducing or expanding the distance between multiple separators 400 by an equal amount. This achieves stable clamping of multiple pouch batteries, ensuring that each pouch battery experiences a completely uniform clamping force. This completely solves the problem of uneven battery force caused by the pressure difference between the end and middle of the traditional restraint tray, effectively avoiding the risk of end batteries deforming due to overpressure and middle batteries shifting due to insufficient clamping. This ensures that the pouch battery experiences uniform and controllable force during the formation process, effectively reducing the defect rate of pouch batteries caused by force issues and improving product consistency and stability.

[0048] The end face of the drive guide block 650 that slides with the distance control guide block 570 is an inclined end face. This reduces the friction between the two, allowing the drive guide block 650 to drive the distance control guide block 570 quickly and efficiently. A limiting protrusion 580 is fixed on one side of the distance control guide block 570. The limiting protrusion 580 and the drive guide block 650 engage intermittently. The limiting protrusion 580 can block the drive guide block 650, thereby controlling its movement stroke and preventing it from separating from the drive guide block 650. This ensures the stability of the connection between the two and ensures that the restraint tray can effectively and continuously clamp and release the soft-pack battery.

[0049] like Figures 3 to 9As shown in a preferred embodiment of the present invention, the heat dissipation assembly 700 includes a heat dissipation box 710, a circulating heat dissipation pipe 720, and a heat transfer conductor 730. The heat dissipation box 710 is fixed on the rear end plate 200. A liquid storage tank, a circulating pump, and a cooling device are respectively disposed inside the heat dissipation box 710. One end of the circulating heat dissipation pipe 720 is connected to the output end of the liquid storage tank and the circulating pump, respectively. The input end of the circulating pump is connected to the liquid storage tank. The cooling device is installed in the liquid storage tank and cools the heat dissipation liquid inside. The other end of the circulating heat dissipation pipe 720 extends between the front end plate 100 and the rear end plate 200 and slides with the heat dissipation sleeve 420 on the partition plate 400. The outer wall of the other end of the circulating heat dissipation pipe 720 is horizontally distributed with heat transfer strips 730. The heat transfer strips 730 are slidably engaged with the connecting grooves 421 opened on the inner wall of the heat dissipation sleeve 420. The sliding engagement of the heat transfer strips 730 with the connecting grooves 421 and the sliding engagement of the circulating heat dissipation pipe 720 with the inner wall of the heat dissipation sleeve 420 can increase the contact area between the circulating heat dissipation pipe 720 and the separator 400, thereby improving the heat dissipation efficiency and quality of the soft-pack battery. This allows the heat transferred from the soft-pack battery to the separator 400 to be dissipated quickly, avoiding heat accumulation that could have additional impacts on the formation of the soft-pack battery, and thus ensuring the quality of the soft-pack battery.

[0050] In a preferred embodiment, the heat transfer strip 730 is directly fixed to the outer wall of the circulating heat dissipation pipe 720 by welding.

[0051] like Figures 7 to 11 As shown in a preferred embodiment of the present invention, grooves are provided in the middle of both sides of the partition 400, and mounting sleeves 430 are distributed in the grooves. The inner wall of the mounting sleeves 430 is fixed with mounting grooves 431 for mounting the elastic clamping assembly 800. The elastic clamping assembly 800 can adaptively follow the changes of the pouch battery with its own elastic force, so that it can always maintain an appropriate pressure on the pouch battery. It will not damage the battery due to excessive pressure when the battery expands, nor will it cause the battery to shake due to insufficient pressure when the battery contracts. This is conducive to the stable progress of the internal chemical reaction of the battery and improves the formation effect. Moreover, the formation equipment may be vibrated or subjected to external impacts during operation. The elastic clamping assembly 800 can use its own elasticity to buffer the impact of these external forces on the pouch battery, prevent the internal structure of the pouch battery from being damaged by vibration or impact, and ensure the safety and reliability of the pouch battery.

[0052] The elastic clamping assembly 800 includes a clamping plate 810, a clamping slider 820, a fixing block 830, a spring 840, a guide stud 850, and a guide groove 860. The clamping plate 810 is distributed on both sides of the partition 400, and the side wall of the clamping plate 810 intermittently slides in contact with the inner wall of the groove. The clamping slider 820 is fixed to the inner side of the clamping plate 810. One end of the clamping slider 820 is slidably mounted on the fixing block 830. The fixing block 830 is fixed inside the mounting sleeve 430. The guide stud 850 is mounted on the fixing block 830. The guide stud 850 and the clamping slider 860 are connected in a series of steps. The guide groove 860 horizontally opened on the slider 820 is slidably engaged. The second spring 840 is installed in the mounting sleeve 430, and the two ends of the second spring 840 are respectively connected to the clamping plates 810 distributed on both sides of the partition plate 400. The second spring 840 can drive the clamping plates 810 to adaptively adjust themselves according to the changes of the soft pack battery through its own elastic force, so that it can always maintain a moderate pressure on the soft pack battery. At the same time, the second spring 840 can also play a buffering role for the soft pack battery through its own elasticity, reducing the impact of external forces on the soft pack battery and improving the formation efficiency and formation quality of the soft pack battery.

[0053] The guide stud 850 and the fixing block 830 can guide the movement of the clamping slider 820 and the clamping plate 810, so that the clamping plate 810 can move fully and effectively to the position where it slides into the groove. This helps to conduct the heat generated inside the pouch battery more evenly to the separator 400, and then dissipate it through the heat dissipation component 700. This makes the temperature distribution of the pouch battery more uniform during the formation process and avoids the adverse effects of local overheating on the performance of the pouch battery.

[0054] A pouch cell formation apparatus includes a charge / discharge component, a temperature control component, and a measurement and control component. It also includes a restraint tray as described above. The charge / discharge component is electrically connected to the pouch cells on the restraint tray, providing the pouch cells with a constant current or constant voltage charge / discharge power supply required for formation, allowing multiple pouch cells to be formed simultaneously. The temperature control system controls the ambient temperature during the formation process, maintaining the required formation environment temperature for the pouch cells. The measurement and control component monitors various data generated during the pouch cell formation process to ensure the formation efficiency and quality of the pouch cells.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A soft-pack battery restraint tray, comprising a front end plate, a rear end plate, connecting guide posts, and partitions, wherein the front end plate is connected to the rear end plate as a whole via the connecting guide posts, and the partitions are distributed between the front end plate and the rear end plate and are slidably connected to the connecting guide posts, characterized in that, Also includes: A drive assembly, one end of which is mounted on the front end plate, and the other end of which is located between the partition and the front end plate and is slidably connected to the connecting guide post; A distance control assembly is located between a front end plate and a rear end plate, with its two ends slidably mounted on the front end plate and the rear end plate, respectively. One side of the distance control assembly is slidably engaged with the other end of a drive assembly. The distance control assembly is provided with distance control grooves that slidably engage with sliding posts fixed at both ends of the top of the partition plate. One distance control groove located in the middle of the distance control assembly is a straight groove. The distance control grooves symmetrically distributed along the straight grooves and located at both ends of the distance control assembly are inclined grooves. The inclination angles of the multiple inclined grooves located on any side of the straight grooves increase sequentially with equal angular interval differences. A heat dissipation assembly, one end of which is fixed to the rear end plate, and the other end of which extends between the front end plate and the rear end plate and slides in cooperation with a heat dissipation sleeve fixed on the partition plate. The inner wall of the heat dissipation sleeve slides in cooperation with the heat dissipation assembly, and the intersection of the outer wall of the heat dissipation sleeve and the surface of the partition plate is designed with an inclined chamfer.

2. The soft-pack battery restraint tray according to claim 1, characterized in that, The distance control assembly includes distance control guide posts, distance control slides, connecting blocks, spring one, distance control seats, and distance control guide blocks. The distance control guide posts are respectively installed on the end faces of the front end plate and the rear end plate that are close to each other. Distance control slides are symmetrically slidably installed at both ends of the distance control guide posts. A connecting block is fixed in the middle of the distance control guide posts. Spring one is installed between the connecting block and the distance control slides. A distance control seat is installed between the distance control slides located on the same side and respectively installed on the front end plate and the rear end plate. The distance control seat has distance control grooves distributed in the same number as the partitions. Distance control guide blocks are fixed on the end faces of the two distance control slides located on one side of the front end plate that are close to each other. The distance control guide blocks are right-angled trapezoidal block structures, and both distance control guide blocks are slidably engaged with one end of the drive assembly.

3. The soft-pack battery restraint tray according to claim 2, characterized in that, The drive assembly includes a threaded sleeve, a screw, a locking screw head, a drive seat, and a drive guide block. The threaded sleeve is fixed in the middle of the front end plate. A threaded groove is formed on the inner wall of the threaded sleeve to be threadedly connected to the screw. One end of the screw is rotatably connected to the drive seat. The drive seat is slidably mounted on the connecting guide post and located between the front end plate and the rear end plate. The top of the drive seat is fixed with a drive guide block that slides with the distance control guide block. A locking screw head is fixed on the other end of the screw.

4. The soft-pack battery restraint tray according to claim 3, characterized in that, The end face of the drive guide block that slides with the distance control guide block is an inclined end face. A limit protrusion is fixed on one side of the distance control guide block. The limit protrusion intermittently engages with the drive guide block and controls the movement stroke of the drive guide block.

5. The soft-pack battery restraint tray according to claim 1, characterized in that, The heat dissipation assembly includes a heat dissipation box, a circulating heat dissipation pipe, and heat transfer strips. The heat dissipation box is fixed to the rear end plate. A liquid storage tank, a circulating pump, and a cooling device are respectively arranged inside the heat dissipation box. One end of the circulating heat dissipation pipe is connected to the output end of the liquid storage tank and the circulating pump, respectively. The input end of the circulating pump is connected to the liquid storage tank. The cooling device is installed in the liquid storage tank and cools the heat dissipation liquid inside. The other end of the circulating heat dissipation pipe extends between the front end plate and the rear end plate and slides with a heat dissipation sleeve on the partition plate. Heat transfer strips are horizontally distributed on the outer wall of the other end of the circulating heat dissipation pipe. The heat transfer strips slide with a connecting groove opened on the inner wall of the heat dissipation sleeve.

6. The soft-pack battery restraint tray according to claim 1, characterized in that, The partition plate has grooves in the middle of both sides, and mounting sleeves are distributed in the grooves. The inner wall of the mounting sleeves is fixed with mounting grooves for installing the elastic clamping components.

7. The soft-pack battery restraint tray according to claim 6, characterized in that, The elastic clamping assembly includes clamping plates, clamping sliders, fixing blocks, spring two, guide studs, and guide grooves. The clamping plates are distributed on both sides of the partition, and the sidewalls of the clamping plates intermittently slide in contact with the inner wall of the grooves. A clamping slider is fixed to the inner side of the clamping plates, and one end of the clamping slider is slidably mounted on the fixing block. The fixing block is fixed inside the mounting sleeve, and a guide stud is mounted on the fixing block. The guide stud slides in cooperation with the guide groove horizontally opened on the clamping slider. Spring two is installed inside the mounting sleeve, and both ends of spring two are respectively connected to the clamping plates distributed on both sides of the partition.

8. A pouch cell formation apparatus, characterized in that, It includes a charging and discharging assembly for providing the power required for the formation of the pouch battery, a temperature control assembly for controlling the ambient temperature during the formation process, a measurement and control assembly for monitoring various data generated during the formation process of the pouch battery, and a restraint tray as described in any one of claims 1 to 7.

Images