Rolling type battery formation equipment

Abstract

According to the rolling type battery formation equipment disclosed by the utility model, the push plate is arranged to be matched with the elastic plate assembly, so that uniform and stable pressure is applied to a battery clamped on the supporting plate. And the fixed and restrained battery is heated and subjected to capacity formation operation, so that the battery is ensured to be subjected to constant pressing force in the formation process, and the stability of the internal structure of the battery is favorably maintained. And the integration of hot pressing, restraining and capacity formation in the formation process is realized. The constant pressing force can prevent the situation of looseness or poor contact caused by volume change generated by chemical reaction in the battery, so that the formation process is ensured to be smoothly carried out, the cycle life of the battery is prolonged, and the safety of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery formation, in particular to a rolling battery formation device. Background Art

[0002] With the widespread application of lithium batteries in electronic devices, electric vehicles, and other fields, the production quality and performance requirements of lithium batteries are constantly improving. During the lithium battery production and formation process, the battery cells need to be charged and discharged at specific temperatures and pressures to activate the chemical reactions within the battery, thereby improving the battery's capacity and cycle life.

[0003] Currently, the capacity formation equipment suitable for double-sided tab batteries has many shortcomings. On the one hand, the existing formation equipment has a complex structure and cumbersome operation, which not only increases the manufacturing cost and maintenance difficulty of the equipment, but also reduces production efficiency. Operators need to undergo specialized training to master the use of the equipment, which increases labor costs and time costs. On the other hand, the existing equipment suffers from large kinetic energy losses during operation. Due to the unreasonable design of the equipment structure, the energy transmission efficiency during the charging and discharging process is low, a large amount of energy is wasted, and production costs are increased. At the same time, unstable pressurization is also a prominent problem. Unstable pressure affects the chemical reactions within the battery, resulting in unstable battery performance and reducing product quality and consistency.

[0004] Furthermore, existing battery formation equipment has safety deficiencies. If the equipment fails to effectively control temperature and pressure during the charge and discharge process, it can cause safety incidents such as battery overheating, fire, or even explosion, posing serious risks to production personnel and equipment. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a rolling battery formation device that integrates hot pressing, restraint, and formation capacity.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A rolling battery formation equipment, used for charge and discharge formation processing of lithium batteries, comprising:

[0008] outer frame;

[0009] An elastic plate assembly is provided at one end of the outer frame, the elastic plate assembly comprising an elastic member and a baffle, one end of the elastic member is connected to the outer frame, and the other end is connected to the baffle;

[0010] A push plate is provided at the other end of the outer frame and is connected to a driving device, wherein the driving device is used to push the push plate to move along the direction of the elastic plate assembly;

[0011] The layer plate assembly is located between the elastic plate assembly and the push plate. The layer plate assembly includes a guide rod, a plurality of layer plates slidably mounted on the guide rod, and a support plate located between adjacent layer plates for clamping batteries. The push plate moves under the action of the driving device and cooperates with the elastic plate assembly to apply uniform and stable pressure to the batteries clamped on the support plate, ensuring that the batteries are subjected to constant pressing force during the formation process.

[0012] Furthermore, both ends of the layer plate assembly are provided with layer plate hanging seats, and sliding members are circumferentially provided inside the layer plate hanging seats; the guide rod passes through the layer plate hanging seats and is slidably connected to the sliding members.

[0013] Furthermore, the sliding member is a pulley, and a plurality of mounting grooves are provided on the inner wall of the layer plate hanger. The pulley can be rotatably installed in the mounting groove, and the pulley protrudes from the mounting groove and is slidably connected to the guide rod.

[0014] Furthermore, the elastic members are arranged in a matrix on the baffle.

[0015] Furthermore, the elastic member is a spring.

[0016] Furthermore, the driving device includes a motor and a screw rod that is transmission-connected to the motor; the push plate is transmission-connected to the screw rod, and the screw rod is driven to rotate by the motor, thereby causing the push plate to move along the direction of the elastic plate assembly.

[0017] Furthermore, a first driven gear is provided at one end of the screw rod; the driving device also includes a driving gear connected to the output end of the motor; a second driven gear is also provided between the driving gear and the first driven gear; the motor rotates to drive the second driven gear and the first driven gear to rotate, so that the screw rod rotates.

[0018] Furthermore, an adjusting gear is provided between the first driven gear and the second driven gear for adjusting the rotational speed outputted by the screw rod.

[0019] Furthermore, the PCB assembly includes a first PCB and a second PCB located at the left and right ends of the layer plate; the first PCB and the second PCB can be slidably arranged relative to the layer plate; the upper and lower ends of the first PCB and the second PCB are both provided with crossbeam grooves, and a crossbeam rod is passed through the crossbeam groove, and the two ends of the crossbeam rod are connected to racks; a transmission rod is provided on the outer frame at positions corresponding to the two ends of the crossbeam rod, and the two ends of the transmission rod are respectively provided with gears that cooperate with the racks. Rotating the transmission rod can drive the crossbeam rod to move, and drive the first PCB and the second PCB to move closer or farther away.

[0020] Furthermore, a radiation sensor is provided on the outer frame.

[0021] The beneficial effects of the utility model are:

[0022] The utility model discloses a rolling battery formation device that applies uniform and stable pressure to the batteries clamped on the support plate by providing a push plate and an elastic plate assembly. The device also heats and performs capacity formation operations on the fixed and restrained batteries, ensuring that the batteries are subjected to a constant compressive force during the formation process, which helps maintain the stability of the battery's internal structure. The device integrates hot pressing, restraint, and capacity formation during the formation process. The constant compressive force prevents loosening or poor contact caused by volume changes due to chemical reactions within the battery, ensuring the smooth progress of the formation process and improving the battery's cycle life and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the partial structural disassembly of the utility model;

[0027] Figure 4 It is a schematic diagram of the driving device of the utility model;

[0028] Figure 5 It is a side view schematic diagram of the utility model;

[0029] Figure 6 is a schematic diagram of the elastic plate assembly of the present utility model;

[0030] Figure 7 This is a schematic diagram of the first state of the layer assembly of the utility model;

[0031] Figure 8 This is a schematic diagram of the second state of the layer board assembly of the present invention;

[0032] Figure 9 It is a schematic diagram of the shelf hanger of the present utility model.

[0033] in,

[0034] 100, external frame;

[0035] 200, elastic plate assembly; 210, elastic member; 220, baffle;

[0036] 300, push plate;

[0037] 400, shelf assembly; 410, shelf; 411, shelf hanger; 4111, sliding member; 4112, mounting slot; 420, guide rod; 430, support plate;

[0038] 500, driving device; 510, motor; 511, driving gear; 520, screw rod; 530, first driven gear; 540, second driven gear; 550, adjusting gear;

[0039] 600, PCB assembly; 610, first PCB; 620, second PCB; 630, beam groove; 640, beam rod; 650, rack; 660, transmission rod;

[0040] 700. Target beam sensor. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0042] In the lithium battery production process, newly manufactured lithium-ion batteries need to be charged and discharged under specific temperature and pressure to activate the chemical reactions inside the battery, so that the battery performance meets the design requirements and improves key indicators such as battery capacity, cycle life and safety.

[0043] The utility model is a rolling battery formation equipment, which is used for charging and discharging of lithium batteries. Figure 1-3, including: an outer frame 100; an elastic plate assembly 200, which is arranged at one end of the outer frame 100, the elastic plate assembly 200 includes an elastic member 210 and a baffle 220, one end of the elastic member 210 is connected to the outer frame 100, and the other end is connected to the baffle 220; a push plate 300, which is arranged at the other end of the outer frame 100 and connected to a driving device 500, and the driving device 500 is used to push the push plate 300 to move along the direction of the elastic plate assembly 200. The layer plate assembly 400 is located between the elastic plate assembly 200 and the push plate 300. The layer plate assembly 400 includes a guide rod 420, a plurality of layers 410 slidably mounted on the guide rod 420, and a support plate 430 located between adjacent layers for clamping batteries. The push plate 300 moves under the action of the driving device 500, and cooperates with the elastic plate assembly 200 to apply uniform and stable pressure to the batteries clamped on the support plate 430, ensuring that the batteries are subjected to constant compression force during the formation process.

[0044] The layer plate is provided with a PCB assembly 600 for connecting with the battery electrodes; a heating assembly is provided on the layer plate 410 for heating the pressurized battery.

[0045] During use, a battery is placed within the layer plate 410 of the layer plate assembly 400, positioned in the middle of the layer plate, so that the gold-plated conductive areas of the left and right PCBs can contact the battery's two terminal tabs, thereby electrically connecting the pole pieces at both ends of the battery to the PCB assembly 600. The driving device 500 pushes the push plate 300 toward the elastic plate assembly 200. The layer plate assembly 400, in cooperation with the push plate 300 and the elastic plate assembly 200, compresses. When the pressure at both ends of the battery reaches a predetermined pressure, the compression stops and the pressure is maintained. After the pressure at both ends of the battery is applied, the heating assembly is activated to heat the battery. Simultaneously, an external power supply begins charging and discharging the battery through the PCB assembly 600, achieving the battery's formation capacity processing. It is understood that when the driving device 500 pushes the push plate 300 to compress the layer plate assembly 400, the elastic member 210 of the elastic plate assembly 200 is simultaneously compressed. The elastic plate assembly 200 here primarily serves to buffer and provide elastic pressure. During the formation process, chemical reactions occur within the battery, potentially causing changes in volume. The elastic member 210 can automatically adjust the pressure according to the volume change of the battery to maintain a constant pressure. This stability can improve the formation quality of the battery and extend the cycle life of the battery. For example, during the formation process of the battery, the stable pressure can ensure the stable performance of the battery during long-term use.

[0046] In some embodiments, multiple groups of beam sensors 700 are provided on the outer frame 100 to achieve real-time detection of battery over-edge, over-height, presence or absence of material, etc., to ensure the quality and safety of battery production.

[0047] In some embodiments, reference Figure 7-9 , both ends of the layer assembly 400 are provided with layer hangers 411, and sliding parts 4111 are provided circumferentially inside the layer hangers 411; the guide rod 420 passes through the layer hangers 411 and is slidably connected to the sliding parts 4111. Letting the guide rod 420 pass through the layer hangers 411 and be slidably connected to the sliding parts 4111 first plays a role in improving the smoothness of sliding. The presence of the sliding parts 4111 reduces the direct friction between the layer hangers 411 and the guide rods 420, making the sliding of the layer on the guide rods 420 easier and more comfortable. In the actual production process, when the driving device 500 drives the layer to move and compress, the smooth sliding can greatly improve the work efficiency, reduce the jamming and resistance during the operation, and ensure that the operation of the entire formation capacity equipment is smoother. In addition, by providing the sliding parts 4111, the wear between the layer hangers 411 and the guide rods 420 can be effectively reduced. Over extended use, if the shelf mount 411 directly rubs against the guide rod 420, wear on both increases, affecting the sliding performance of the shelf and potentially reducing the lifespan of the equipment. The provision of a sliding member 4111 shifts friction from between the shelf mount 411 and the guide rod 420 to between the sliding member 4111 and the guide rod 420. Because the sliding member 4111 is typically made of a wear-resistant material or has a special lubrication treatment, it can withstand increased friction without being easily damaged. This extends the lifespan of the shelf mount 411 and the guide rod 420, reducing equipment maintenance costs.

[0048] Further, refer to Figure 9The sliding member 4111 is a pulley, and the inner wall of the layer plate hanger 411 is provided with a plurality of mounting grooves 4112. The pulley is rotatably mounted in the mounting groove 4112, and the pulley protrudes from the mounting groove 4112 and is slidably connected to the guide rod 420. The sliding member 4111 is set as a pulley, and the rolling characteristics of the pulley are utilized to greatly reduce the sliding friction between the layer plate hanger 411 and the guide rod 420. Compared with the traditional nylon sleeve structure, the rolling friction coefficient of the pulley is smaller, making the sliding of the layer plate on the guide rod 420 smoother and more efficient. In practical applications, for example, on a large-scale battery production line, it is necessary to frequently adjust the position of the layer plate to adapt to batteries of different specifications or to perform rapid production operations. The use of pulleys can greatly improve production efficiency and reduce operation time and labor costs. A plurality of mounting grooves 4112 are provided on the inner wall of the layer plate hanger 411, and the pulley is rotatably mounted in the mounting groove 4112. This design can enhance the stability of the structure. The mounting groove 4112 provides a fixed mounting position for the pulley, so that the pulley will not shift or shake during operation. At the same time, multiple pulleys are evenly distributed on the inner wall of the layer hanger 411, which can share the weight of the layer and the force during sliding, thereby improving the stability of the entire layer assembly 400. For example, during the operation of the equipment, even if it is subjected to certain external impacts or vibrations, the pulley can continue to roll stably in the mounting groove 4112, ensuring that the position of the layer will not change significantly, thereby ensuring the stability and reliability of the battery formation process.

[0049] In some embodiments, reference Figure 3 、 6 The elastic plate assembly 200 includes an elastic member 210 and a baffle 220. One end of the elastic member 210 is connected to the outer frame 100, and the other end is connected to the baffle 220. The elastic member 210 is arranged in a matrix on the baffle 220. The elastic members 210 arranged in a matrix can increase the stability of the entire elastic plate assembly 200. The elastic members 210 at different positions work together to withstand forces from different directions and reduce the tilt or offset of the baffle 220 during the force process. In actual production, the equipment may be affected by various external factors, such as vibration, impact, etc., and the stable elastic plate assembly 200 can better cope with these interferences and ensure that the pressure on the battery remains stable at all times.

[0050] Furthermore, the elastic member 210 is preferably a spring. The spring has good elastic properties and stability. In the formation capacity device, the spring can produce reliable elastic deformation under the action of the push plate 300, providing stable pressure for the baffle 220. The elastic coefficient of the spring is relatively stable and will not change significantly due to long-term use or environmental changes, ensuring the consistency and reliability of the pressure applied by the device to the battery. For example, during a long battery formation process, the spring can always maintain a certain elastic force, ensuring that the battery is subjected to a uniform pressing force, thereby improving the formation quality of the battery. In addition, the spring has a simple structure and is very convenient to install and maintain.

[0051] Furthermore, by selecting springs of different specifications and elastic coefficients, it is possible to adjust the elastic force of the elastic plate assembly 200. According to the formation requirements of different types of batteries, the parameters of the springs can be adjusted to obtain a suitable pressure range.

[0052] In some embodiments, reference Figure 1-4 The driving device 500 includes a motor 510 and a screw rod 520 that is transmission-connected to the motor 510; the push plate 300 is transmission-connected to the screw rod 520, and the motor 510 drives the screw rod 520 to rotate, thereby causing the push plate 300 to move along the direction of the elastic plate assembly 200. It can be understood that the rotation of the screw rod 520 driven by the motor 510 provides pressure for the push plate 300. The screw rod 520 transmission has a high transmission efficiency and can effectively transmit the power of the motor 510 to the push plate 300, reducing energy loss. Compared with other transmission methods, the screw rod 520 transmission is more reliable when transmitting large thrust, and can ensure that the push plate 300 maintains stable movement during long-term operation. For example, in large-scale battery production, a large number of batteries need to be frequently subjected to formation treatment. An efficient transmission system can improve production efficiency and reduce energy consumption. In addition, the motor 510 can be connected to a control system to achieve automated control. Through programming, the speed, direction, and operating time of the motor 510 can be precisely controlled, thereby achieving automatic movement and positioning of the push plate 300. Automated control can improve production accuracy and consistency, reduce human error, and enable intelligent management of the production process, improving production efficiency and quality.

[0053] In some embodiments, reference Figure 4A first driven gear 530 is provided at one end of the screw rod 520. The drive device 500 also includes a driving gear 511 connected to the output end of the motor 510. A second driven gear 540 is provided between the driving gear 511 and the first driven gear 530. The motor 510 rotates to drive the second driven gear 540 and the first driven gear 530 to rotate, thereby rotating the screw rod 520. Specifically, there are four screw rods 520, located at both ends of the push plate 300. In other words, the motor 510 is used to simultaneously drive the four screw rods 520 to rotate, causing the push plate 300 to compress the laminate. There are two second driven gears 540, located on either side of the driving gear 511 of the motor 510. Rotation of the driving gear 511 drives the two second driven gears 540 to rotate. The screw rods 520 on both sides are meshed with the second driven gears 540 through the first driven gear 530 to drive the screw rod to rotate.

[0054] Further, refer to Figure 4 An adjusting gear 550 is further provided between the first driven gear 530 and the second driven gear 540 for adjusting the output speed of the screw rod 520 .

[0055] In some embodiments, reference Figure 5 、 7 8. The PCB assembly 600 includes a first PCB 610 and a second PCB 620 located at the left and right ends of the layer plate; the first PCB 610 and the second PCB 620 can be slidably arranged relative to the layer plate; the first PCB 610 and the second PCB 620 are provided with a crossbeam groove 630 at the upper and lower ends, and a crossbeam rod 640 is passed through the crossbeam groove 630, and the two ends of the crossbeam rod 640 are connected to a rack 650; a transmission rod 660 is provided at a position corresponding to the two ends of the crossbeam rod 640 on the outer frame 100, and the two ends of the transmission rod 660 are respectively provided with a gear that cooperates with the rack 650. Rotating the transmission rod 660 can drive the crossbeam rod 640 to move, and drive the first PCB 610 and the second PCB 620 to move closer or farther away.

[0056] It is understandable that the first PCB and the second PCB can be slidably arranged relative to the layer plate, so that in actual application, the position of the PCB can be flexibly adjusted according to different battery sizes and formation requirements. Figure 7 、 8 , respectively, represent the maximum and minimum adjustment of the first and second PCBs relative to the laminate assembly. For example, for batteries of varying lengths or widths, the PCBs can be slid to ensure good contact with the battery electrodes, improving formation efficiency. The movement of the crossbar 640 within the crossbar slot 630 precisely controls the sliding direction and distance of the PCBs, preventing drift or instability.

[0057] In addition, refer to Figure 7 、 8 The racks 650 connected to the ends of the crossbar 640 mate with the gears on the ends of the transmission rod 660 on the outer frame 100. Rotating the transmission rod 660 drives the crossbar 640. This allows the first and second PCBs to move synchronously, ensuring symmetry during position adjustment, thereby better adapting to the shape and size of the battery. Operators can adjust the position of both PCBs simultaneously by simply rotating the transmission rod 660, eliminating the need to operate each PCB separately, saving time and labor costs.

[0058] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rolling battery formation equipment for charge and discharge formation treatment of lithium batteries, characterized in that: include: outer frame; An elastic plate assembly is provided at one end of the outer frame, the elastic plate assembly comprising an elastic member and a baffle, one end of the elastic member is connected to the outer frame, and the other end is connected to the baffle; A push plate is provided at the other end of the outer frame and is connected to a driving device, wherein the driving device is used to push the push plate to move along the direction of the elastic plate assembly; The layer plate assembly is located between the elastic plate assembly and the push plate. The layer plate assembly includes a guide rod, a plurality of layer plates slidably mounted on the guide rod, and a support plate located between adjacent layer plates for clamping batteries. The push plate moves under the action of the driving device and cooperates with the elastic plate assembly to apply uniform and stable pressure to the batteries clamped on the support plate, ensuring that the batteries are subjected to constant pressing force during the formation process.

2. The rolling battery formation equipment according to claim 1, characterized in that: Both ends of the layer plate assembly are provided with layer plate hanging seats, and sliding members are circumferentially provided inside the layer plate hanging seats; the guide rod passes through the layer plate hanging seats and is slidably connected to the sliding members.

3. The rolling battery formation equipment according to claim 2, characterized in that: The sliding member is a pulley, and a plurality of mounting grooves are provided on the inner wall of the layer plate hanging seat. The pulley can be rotatably installed in the mounting groove, and the pulley protrudes from the mounting groove and is slidably connected to the guide rod.

4. The rolling battery formation equipment according to claim 1, characterized in that: The elastic members are arranged in a matrix on the baffle.

5. The rolling battery formation equipment according to claim 4, characterized in that: The elastic member is a spring.

6. The rolling battery formation equipment according to claim 1, characterized in that: The driving device includes a motor and a screw rod that is transmission-connected to the motor; the push plate is transmission-connected to the screw rod, and the motor drives the screw rod to rotate, thereby causing the push plate to move along the direction of the elastic plate assembly.

7. The rolling battery formation equipment according to claim 6, characterized in that: A first driven gear is provided at one end of the screw rod; the driving device also includes a driving gear connected to the output end of the motor; a second driven gear is also provided between the driving gear and the first driven gear; the motor rotates to drive the second driven gear and the first driven gear to rotate, so that the screw rod rotates.

8. The rolling battery formation equipment according to claim 7, characterized in that: An adjusting gear is also provided between the first driven gear and the second driven gear for adjusting the rotational speed outputted by the screw rod.

9. The rolling battery formation equipment according to claim 1, characterized in that: The PCB assembly includes a first PCB and a second PCB located at the left and right ends of the layer plate; the first and second PCBs can be slidably arranged relative to the layer plate; the first and second PCBs are both provided with crossbeam grooves at the upper and lower ends, and a crossbeam rod is passed through the crossbeam groove, and racks are connected to the two ends of the crossbeam rod; a transmission rod is provided on the outer frame at positions corresponding to the two ends of the crossbeam rod, and gears are respectively provided at the two ends of the transmission rod to cooperate with the racks. Rotating the transmission rod can drive the crossbeam rod to move, and drive the first and second PCBs to move closer or farther away.

10. The rolling battery formation equipment according to any one of claims 1 to 9, characterized in that: A through-beam sensor is provided on the outer frame.

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