Anti-interference weighing mechanism matched with lithium battery liquid injection

Abstract

The utility model relates to the technical field of lithium battery production equipment, and particularly discloses an anti-interference weighing mechanism matched with lithium battery liquid injection, which comprises a rack, a weighing device arranged on the rack, a support plate arranged on the rack in a reciprocating manner, and a first driving mechanism used for driving the support plate to reciprocate, the supporting plate is located above the weighing device, the weighing device is provided with a base plate used for placing a battery, the supporting plate is provided with a through hole matched with the base plate for use, and the first driving mechanism drives the supporting plate to move to expose the base plate from the through hole so as to be matched with subsequent manual or automatic placement of the battery on the base plate to weigh the battery through the weighing device. Through the support plate capable of reciprocating, external interference is blocked when weighing is not carried out, stable work of the weighing device is guaranteed, and the weighing accuracy is improved; the base plate is convenient to expose or hide, the battery is convenient to place manually or automatically, and the operation convenience is improved; related parameters can be flexibly adjusted to adapt to weighing of batteries of different specifications, and the universality of equipment is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment technology, and in particular discloses an anti-interference weighing mechanism that works in conjunction with lithium battery liquid injection. Background Technology

[0002] In the lithium battery manufacturing industry, the quality of the electrolyte injection process plays a crucial role in battery performance and stability, and battery weighing, as an important step before and after electrolyte injection, directly affects product quality. However, the current lithium battery electrolyte injection production environment suffers from numerous problems. In the electrolyte injection workshop, the continuous operation of large equipment and the surging airflow within ventilation ducts create a complex and disruptive environment for weighing equipment. These disturbances cause frequent fluctuations in weighing data, failing to accurately reflect the true weight of the battery, thus affecting the precise control of subsequent electrolyte injection volume and reducing battery quality stability. Traditional weighing processes rely on manual battery handling, which is not only inefficient but also prone to affecting battery condition due to improper handling during transport, increasing the defect rate. Furthermore, the lack of seamless coordination between production stages and slow equipment response make it difficult to meet the demands of large-scale, high-efficiency modern production. Different specifications of lithium batteries vary significantly in size and shape, and existing weighing equipment often lacks flexibility and versatility, requiring companies to invest heavily in various types of equipment. Moreover, the lack of flexibility in equipment layout makes it difficult to optimize based on actual workshop space and production processes, limiting further improvements in production efficiency. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an anti-interference weighing mechanism that works in conjunction with lithium battery liquid injection.

[0004] To achieve the above objectives, this utility model provides an anti-interference weighing mechanism for lithium battery electrolyte filling, comprising a frame, a weighing device mounted on the frame, a reciprocating support plate mounted on the frame, and a first drive mechanism for driving the support plate to reciprocate. The support plate is located above the weighing device, which has a pad for placing the battery. The support plate has a through hole for using the pad. The first drive mechanism drives the support plate to move and expose the pad through the through hole, so as to facilitate subsequent manual or automatic placement of the battery on the pad and weighing of the battery by the weighing device.

[0005] Furthermore, the support plate is provided with a rotating roller conveyor and a second drive mechanism that drives the roller conveyor to rotate. The second drive mechanism drives the roller conveyor to move the battery to the pad for weighing.

[0006] Furthermore, the pad is provided with a limiting protrusion that works in conjunction with the roller conveyor line. Under the drive of the first drive mechanism, the support plate causes the limiting protrusion to pass through the roller conveyor line, thereby lifting the battery for weighing.

[0007] Furthermore, the first drive mechanism has a guide cylinder mounted on the frame, the output end of the guide cylinder is provided with a push plate, and a guide assembly is provided between the push plate and the support plate. The guide cylinder drives the push plate to reciprocate on the frame via the guide assembly.

[0008] Furthermore, the anti-interference weighing mechanism also includes two drive cylinders arranged in parallel on the support plate. The two drive cylinders are located on both sides of the roller conveyor line. The output end of the drive cylinder is equipped with a limit plate. The two drive cylinders drive the two limit plates to move closer to each other to limit the position of the battery on the roller conveyor line.

[0009] Furthermore, multiple limiting wheels for limiting the batteries are rotatably installed on the roller conveyor line, and the multiple limiting wheels are arranged along the conveying direction of the roller conveyor line.

[0010] Furthermore, the frame has a base frame and a support platform mounted on the base frame, the weighing device is mounted on the support platform, and a height equalization block is provided between the support platform and the base frame.

[0011] Furthermore, the guide assembly has a guide rod installed between the push plate and the support plate, and a bearing seat for installing the guide rod is provided on the frame. The guide cylinder drives the push plate and the support plate to reciprocate along the guide rod on the frame.

[0012] Furthermore, the number of the limiting protrusions is set to multiple, and the multiple limiting protrusions are arranged on the pad.

[0013] Furthermore, the bottom of the frame is equipped with a counterweight and shock-absorbing feet. The counterweight is used to lower the center of gravity of the frame, and the shock-absorbing feet are used to reduce the interference caused by external vibrations during the weighing process.

[0014] The beneficial effects of this utility model are:

[0015] (1) Ensure accurate and stable weighing: By blocking interference with the support plate, lowering the center of gravity with the counterweight, buffering vibration with the shock-absorbing feet, and ensuring the level of the load-bearing platform and vibration isolation with the level block, the interference of external factors on the weighing device is effectively reduced, ensuring that the battery is weighed in a stable and interference-free environment, which greatly improves the accuracy and stability of the weighing data and provides a reliable basis for the quality control of lithium battery production.

[0016] (2) Improve automation and production efficiency: The roller conveyor line, in conjunction with the second drive mechanism, automatically transfers batteries and works with the weighing device to achieve continuous and rapid weighing; the guide cylinder and drive cylinder have fast response speeds and accurately control the movement of the support plate and limit plate, reducing the weighing interval time of a single battery. All components work closely together to make the production process compact and efficient, thereby improving overall production efficiency.

[0017] (3) Enhance the versatility and adaptability of the equipment: Adjustable support plates, limit plates, limit protrusions and limit wheels can adapt to the weighing, limiting and conveying needs of batteries of different specifications and shapes. The equipment layout is flexible and can be optimized according to site and process requirements to improve space utilization and reduce the cost of equipment purchase and site planning for enterprises. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-interference weighing mechanism that works in conjunction with lithium battery electrolyte filling according to this utility model;

[0019] Figure 2 This is a schematic diagram of the first partial structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the second partial structure of the present invention.

[0021] The reference numerals in the attached drawings include: 1. Frame; 11. Base frame; 12. Bearing platform; 13. Equal height block; 2. Weighing device; 3. Support plate; 31. Through hole; 4. First drive mechanism; 41. Guide cylinder; 42. Push plate; 43. Guide assembly; 431. Guide rod; 432. Bearing seat; 5. Pad plate; 6. Roller conveyor line; 7. Second drive mechanism; 8. Limiting protrusion; 9. Drive cylinder; 14. Limiting plate; 15. Limiting wheel; 16. Counterweight block; 17. Vibration damping foot cup. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] Please see Figures 1 to 3 As shown, this utility model discloses an anti-interference weighing mechanism for lithium battery electrolyte filling, including a frame 1, a weighing device 2 mounted on the frame 1, a support plate 3 reciprocatingly mounted on the frame 1, and a first drive mechanism 4 for driving the support plate 3 to reciprocate. The support plate 3 is located above the weighing device 2, and the weighing device 2 is provided with a pad 5 for placing the battery. The support plate 3 is provided with a through hole 31 for use with the pad 5. The first drive mechanism 4 drives the support plate 3 to move and expose the pad 5 through the through hole 31, so as to facilitate the subsequent manual or automatic placement of the battery on the pad 5 and weighing of the battery by the weighing device 2.

[0024] In practical use, the complex environment of lithium battery filling may be affected by factors such as vibration and airflow, impacting weighing accuracy. This mechanism addresses this by incorporating a reciprocating support plate 3. When not weighing, the support plate 3 blocks external interference from affecting the weighing device 2 and the battery placed on the pad 5. For example, when the filling equipment vibrates, the support plate 3 provides cushioning and isolation, allowing the weighing device 2 to operate more stably and improving weighing accuracy. When weighing is required, the first drive mechanism 4 moves the support plate 3, exposing the pad 5 through the through hole 31. The battery is then placed on the pad 5 for weighing. This design ensures the battery is in a relatively stable, interference-free environment during weighing, avoiding weighing errors caused by external environmental factors. This helps obtain accurate battery weight data, providing a reliable basis for subsequent production processes.

[0025] Whether batteries are placed manually or automatically, the first drive mechanism 4 controls the movement of the support plate 3, allowing the pad 5 to be easily exposed or hidden. When batteries need to be placed, the support plate 3 moves away to expose the pad 5, providing a clear and unobstructed placement area. This facilitates accurate placement of batteries by operators or automated equipment, reducing placement time and operational difficulty, and improving operational convenience. The design of this mechanism is closely integrated with the lithium battery electrolyte filling production process. Weighing can be flexibly arranged before or after electrolyte filling according to production needs. By quickly exposing and hiding the pad 5, efficient integration of battery weighing with other production processes is achieved, improving overall production efficiency and ensuring smooth production flow.

[0026] The through-hole 31 on the support plate 3 mates with the pad 5. By adjusting parameters such as the size of the support plate 3, the size of the through-hole 31, and the stroke of the first drive mechanism 4, it can adapt to the weighing requirements of batteries of different specifications and sizes. This allows the mechanism to be used in various lithium battery production scenarios without the need to design different weighing devices for different battery specifications, improving the equipment's versatility and utilization. The compact structure and flexible operation of this mechanism make it highly flexible in the layout of the production workshop. It can be easily installed in a suitable location according to the actual conditions of the production site and the requirements of the production process, and can be reasonably matched with other lithium battery liquid filling equipment to optimize the production layout and improve space utilization.

[0027] Specifically, the support plate 3 is provided with a rotating roller conveyor line 6 and a second drive mechanism 7 that drives the roller conveyor line 6 to rotate. The second drive mechanism 7 drives the roller conveyor line 6 to move the battery to the pad plate 5 for weighing.

[0028] In actual use, the second drive mechanism 7 drives the roller conveyor 6 to rotate, automatically transferring the batteries to the pad 5 for weighing. This eliminates the need for manual handling, significantly reducing manpower and increasing the automation level of the weighing process. This not only saves labor costs but also speeds up battery transfer, shortens the time interval between weighing individual batteries, and makes the entire production process more compact and efficient, thus significantly improving production efficiency. The roller conveyor 6 can continuously transport batteries, and in conjunction with the rapid weighing function of the weighing device 2, it can perform continuous weighing operations on multiple batteries. In large-scale lithium battery production, this maintains the continuity of the production rhythm, avoids production stoppages caused by intermittent manual operation, and further improves production efficiency. The rotation of the roller conveyor 6 keeps the batteries relatively stable during transfer, reducing the impact of shaking and collisions on weighing accuracy. The stable transfer process helps the batteries to be accurately placed on the pad 5, ensuring consistent battery position during weighing, thereby improving the accuracy and stability of the weighing data. By adjusting the roller size and spacing of the roller conveyor line 6, as well as the drive parameters of the second drive mechanism 7, the system can flexibly adapt to the transfer requirements of lithium batteries of different sizes, weights, and shapes. This makes the anti-interference weighing mechanism more versatile in lithium battery production, capable of meeting the production requirements of various types of batteries, and improving the applicability and return on investment of the equipment.

[0029] Specifically, the pad 5 is provided with a limiting protrusion 8 that works in conjunction with the roller conveyor line 6. Under the drive of the first drive mechanism 4, the support plate 3 causes the limiting protrusion 8 to pass through the roller conveyor line 6, thereby lifting the battery for weighing.

[0030] In actual use, the limiting protrusion 8 works in conjunction with the roller conveyor 6. When the battery is conveyed to the pad 5 via the roller conveyor 6, the limiting protrusion 8 accurately limits the battery's position. This ensures that the battery is placed in the same position on the pad 5 each time, greatly improving the battery's positioning accuracy during weighing. Since the weighing result may be affected by the battery's placement position, precise positioning helps to obtain more stable and accurate weighing data, providing a reliable basis for the production process. During the movement of the battery by the roller conveyor 6, the battery may shift due to various factors, affecting the weighing accuracy. The limiting protrusion 8 can effectively prevent the battery from shifting during conveying and weighing, ensuring that the battery is always in the correct weighing position, further improving the reliability of the weighing data.

[0031] Driven by the first drive mechanism 4, the support plate 3 causes the limiting protrusion 8 to pass through the roller conveyor 6 and lift the battery. This design makes the process of transferring the battery from the roller conveyor 6 to the weighing position smoother, avoiding weight measurement errors caused by collisions or shaking during the transfer. The smooth lifting action helps improve the accuracy and stability of weighing and reduces the interference of unstable factors during the transfer process on the results. Weighing the battery by lifting it with the limiting protrusion 8 reduces the potential interference of the contact state between the roller and the battery on the weight measurement compared to weighing directly on the roller conveyor 6. Because factors such as the contact area and pressure distribution between the roller and the battery may affect the weighing results, lifting the battery eliminates these uncertainties, making the weighing results more accurately reflect the weight of the battery itself. By reasonably designing the shape, size, and layout of the limiting protrusion 8, it can be adapted to batteries of different specifications and shapes. For batteries of different sizes, the limiting protrusion 8 can provide appropriate limiting and lifting support, ensuring that all kinds of batteries can be accurately weighed on the pad 5. This enhances the versatility of the equipment, eliminating the need for companies to purchase multiple weighing devices for batteries of different specifications, thus reducing production costs.

[0032] Specifically, the first drive mechanism 4 has a guide cylinder 41 mounted on the frame 1. The output end of the guide cylinder 41 is provided with a push plate 42. A guide assembly 43 is provided between the push plate 42 and the support plate 3. The guide cylinder 41 drives the push plate 42 to reciprocate on the frame 1 via the guide assembly 43.

[0033] In actual use, the guide cylinder 41, in conjunction with the guide assembly 43, provides precise guidance for the reciprocating motion of the support plate 3. The guide assembly 43 restricts the support plate 3 to move only in a specific direction, effectively preventing deviation, swaying, or jamming during movement and ensuring its trajectory remains precise. This is crucial for ensuring weighing accuracy, as the stable and accurate movement of the support plate 3 is a prerequisite for the battery to be accurately placed on the weighing pad 5. Throughout the entire operation of the mechanism, the guide assembly 43 and the guide cylinder 41 work together to greatly enhance the stability of the support plate 3's movement. Even under high-speed reciprocating motion or under certain external forces, the support plate 3 can still operate smoothly, reducing component wear and equipment failure caused by unstable movement, extending the equipment's service life, and ensuring the reliability of the weighing process.

[0034] The guide cylinder 41 provides a strong and stable driving force, quickly pushing the push plate 42, which in turn drives the support plate 3 to reciprocate on the frame 1. This efficient driving method meets the needs of rapid weighing operations in the production process, improves the efficiency of the weighing process, and makes the entire production process more compact and efficient. The guide cylinder 41 responds quickly to control signals, enabling it to rapidly start, stop, or change the movement state of the support plate 3 according to production needs. On automated production lines, this characteristic allows the weighing mechanism to closely coordinate with the rhythm of other production equipment, achieving seamless integration and further improving overall production efficiency.

[0035] Specifically, the anti-interference weighing mechanism also includes two drive cylinders 9 arranged in parallel on the support plate 3. The two drive cylinders 9 are located on both sides of the roller conveyor line 6. The output end of the drive cylinder 9 is provided with a limiting plate 14. The two drive cylinders 9 drive the two limiting plates 14 to move closer to each other to limit the battery on the roller conveyor line 6.

[0036] In actual use, two drive cylinders 9 are located on both sides of the roller conveyor line 6. The limiting plates 14 at their output ends move closer together under the action of the drive cylinders 9, precisely limiting the batteries on the roller conveyor line 6 from both sides. This ensures that the batteries remain in the predetermined position during transport, preventing them from shifting or shaking on the rollers. It guarantees that the batteries reach the weighing pad 5 in the correct position each time, significantly improving the positioning accuracy of the batteries during weighing, thereby enhancing the accuracy and reliability of the weighing data. By adjusting the stroke of the drive cylinders 9, the distance between the two limiting plates 14 can be flexibly controlled to adapt to the limiting requirements of batteries of different sizes and specifications. Whether it is a small consumer lithium battery or a large power battery, precise limiting can be achieved by adjusting the distance between the limiting plates 14, enhancing the versatility and adaptability of the equipment.

[0037] The drive cylinder 9 has a fast response speed, enabling it to drive the limit plate 14 to complete the battery limiting action in a short time. This rapid response characteristic allows the weighing mechanism to quickly prepare for weighing operations, reducing the time interval between weighing each battery, improving the efficiency of the weighing process, and thus enhancing the continuity and efficiency of the entire production process. The limit plate 14 works in conjunction with the roller conveyor 6, providing real-time limiting during battery transport. Once the battery is in place, the limit plate 14 quickly moves to complete the limiting action, preparing for subsequent weighing. This close collaborative operation mode ensures the smooth operation of the production process and avoids production stoppages caused by inaccurate battery positioning.

[0038] Specifically, multiple limiting wheels 15 for limiting the batteries are rotatably installed on the roller conveyor line 6, and the multiple limiting wheels 15 are arranged along the conveying direction of the roller conveyor line 6.

[0039] In actual use, multiple limiting wheels 15 are arranged along the conveying direction of the roller conveyor line 6, which can restrict the position of the battery from the side during battery conveying, effectively preventing the battery from shifting laterally during the rolling of the rollers. Whether the battery deviates slightly from its initial position during conveying or shifts due to vibration or other factors during conveying, the limiting wheels 15 can correct it in time, ensuring that the battery always moves along the predetermined conveying path and accurately reaches the weighing pad 5, providing a guarantee for accurate weighing. For some irregularly shaped lithium batteries, the limiting wheels 15 can better adapt to their contours through multi-point contact with the side of the battery, achieving all-round limiting and guiding. Compared with a single limiting device, the design of multiple limiting wheels 15 distributed along the conveying direction can more flexibly meet the conveying needs of batteries with different shapes, enhancing the equipment's adaptability to various battery types.

[0040] During transport, batteries may sway due to factors such as roller rotation and equipment vibration. The presence of the limiting wheels 15 increases the contact points between the battery and the transport device, acting as multiple stable support points to effectively buffer and reduce the impact of vibration on the battery, keeping it relatively stable during transport. This not only helps improve weighing accuracy but also reduces the risk of damage to the battery's internal structure due to vibration, ensuring battery quality. The limiting wheels 15 work in conjunction with the rollers to help maintain a relatively stable speed during transport. When the rotation speed of a roller fluctuates, the limiting wheels 15 can adjust the battery's movement speed to a certain extent through contact with the battery, preventing the battery from jamming or accelerating unevenly due to local roller speed changes, ensuring that the battery is transported to the weighing position at a uniform speed and stably.

[0041] Specifically, the frame 1 has a base frame 11 and a support platform 12 disposed on the base frame 11, the weighing device 2 is disposed on the support platform 12, and a height equalization block 13 is provided between the support platform 12 and the base frame 11.

[0042] In actual use, the leveling block 13 is positioned between the support platform 12 and the base frame 11 to ensure that the support platform 12 is horizontal. The weighing device 2 is placed on the horizontal support platform 12, ensuring that the weight of the battery acts perpendicularly to the weighing sensor during weighing, avoiding weighing errors caused by the tilt of the support platform 12. Accurate weighing data is crucial for quality control in the lithium battery production process, helping to ensure product consistency and stability. The leveling block 13 acts as a buffer and vibration isolation between the support platform 12 and the base frame 11. The base frame 11 may vibrate due to factors such as workshop floor vibration and the operation of other equipment; the leveling block 13 can reduce the transmission of these vibrations to the support platform 12, thereby reducing interference with the weighing device 2. A stable weighing environment helps improve the accuracy and reliability of weighing, reducing fluctuations in weighing data caused by vibration interference.

[0043] The equal-height blocks 13 are evenly distributed between the bearing platform 12 and the base frame 11, enabling the weight of the bearing platform 12 (including the weight of the weighing device 2, battery, and other auxiliary components) to be evenly transferred to the base frame 11. This uniform force distribution helps reduce the risk of deformation of the base frame 11 and the bearing platform 12 due to excessive local stress, enhancing the stability and reliability of the entire frame 1 structure and extending the service life of the equipment. The equal-height blocks 13, in close cooperation with the base frame 11 and the bearing platform 12, increase the rigidity of the entire frame 1 structure. During equipment operation, they can better resist external forces, such as equipment vibration and unintentional collisions by operators, maintaining the stability of the equipment structure and ensuring the long-term stable operation of the weighing mechanism.

[0044] Specifically, the guide assembly 43 has a guide rod 431 installed between the push plate 42 and the support plate 3. The frame 1 is provided with a bearing seat 432 for installing the guide rod 431. The guide cylinder 41 drives the push plate 42 and the support plate 3 to reciprocate along the guide rod 431 on the frame 1.

[0045] In actual use, the guide rod 431 is installed between the push plate 42 and the support plate 3, and is fixed by the bearing seat 432 on the frame 1, providing precise guidance for the reciprocating motion of the support plate 3. The straightness of the guide rod 431 and the positioning function of the bearing seat 432 ensure that the support plate 3 can only move in a straight line along the axial direction of the guide rod 431 during the process of the guide cylinder 41 driving the push plate 42, effectively avoiding deviation, shaking or swaying during the movement, and ensuring the high accuracy of the movement trajectory of the support plate 3. This is crucial for ensuring that the battery can be accurately placed on the weighing pad 5 for weighing, because even a small positional deviation may affect the accuracy of the weighing result. During the entire operation of the mechanism, the guide rod 431 and the bearing seat 432 work closely together, greatly enhancing the stability of the movement of the support plate 3. The guide rod 431 can withstand a certain lateral force, and when the guide cylinder 41 provides driving force, it can effectively counteract the lateral component force that may be generated by the force transmission, so that the support plate 3 can still maintain stable operation under high-speed reciprocating motion or under certain external impact. This not only reduces component wear caused by unstable movement and extends the service life of the equipment, but also ensures the reliability of the weighing process and avoids interference with the weighing results caused by the swaying of the support plate 3.

[0046] As a key component connecting the push plate 42 and the support plate 3, the guide rod 431 efficiently transmits the driving force applied to the push plate 42 by the guide cylinder 41 to the support plate 3, achieving synchronous movement between the two. This direct and rigid connection reduces energy loss during transmission, allowing the driving force of the guide cylinder 41 to be fully converted into linear motion of the support plate 3, thus improving the efficiency of the drive system. The guide rod 431 and the bearing seat 432 utilize rolling friction, which offers less resistance compared to sliding friction. This makes the reciprocating motion of the support plate 3 smoother, reducing heat and wear caused by friction, lowering energy consumption, and improving the equipment's response speed. It enables faster completion of pre-weighing preparation and post-weighing reset actions, contributing to improved overall weighing efficiency. By strategically arranging the bearing seat 432 on the frame 1, the installation position and angle of the guide rod 431 can be flexibly adjusted to adapt to different equipment layouts and production process requirements. For example, in a production workshop with limited space, the position of the guide rod 431 can be adjusted according to the actual space conditions, optimizing the overall equipment layout and improving space utilization.

[0047] Specifically, the number of the limiting protrusions 8 is set to multiple, and the multiple limiting protrusions 8 are arranged on the pad 5.

[0048] In actual use, multiple limiting protrusions 8 are arranged reasonably on the pad 5 to limit the battery from multiple directions. Compared with a single limiting protrusion 8, they can better conform to the outline of the battery, constraining various sides or specific parts of the battery, effectively preventing the battery from shifting or rotating on the pad 5, ensuring that the battery is in the same precise position every time it is weighed, thereby greatly improving the accuracy of weighing and the reliability of the data. Different specifications of batteries have different shapes and sizes. The layout of multiple limiting protrusions 8 can be designed according to common battery specifications. By setting different arrangement methods and spacing, it can flexibly adapt to the limiting requirements of various batteries. For example, for rectangular batteries, limiting protrusions 8 can be set at the four corners or the long and wide sides of the pad 5; for round batteries, limiting protrusions 8 can be arranged around the circumference of the battery, enhancing the equipment's versatility for different types of batteries.

[0049] Multiple limiting protrusions 8 are evenly distributed on the pad 5, providing more uniform support for the battery when it is lifted for weighing. This prevents the battery from tilting or shaking during weighing due to a single or unevenly distributed support point, ensuring the battery remains stable during weighing and further improving the stability and accuracy of the weighing data. During the process of the battery being lifted and placed by the limiting protrusions 8, the multiple limiting protrusions 8 also provide a certain degree of cushioning and shock absorption. When the battery comes into contact with the limiting protrusions 8, the multiple limiting protrusions 8 share the impact force, reducing the instantaneous impact force on the battery, lowering the risk of damage due to collision, and also helping to maintain the stability of the weighing process.

[0050] Specifically, the bottom of the frame 1 is provided with a counterweight 16 and a shock-absorbing foot cup 17. The counterweight 16 is used to lower the center of gravity of the frame 1, and the shock-absorbing foot cup 17 is used to reduce the interference caused by external vibrations during the weighing process.

[0051] In actual use, the counterweight 16 increases the weight at the bottom of the frame 1, significantly lowering the center of gravity of the entire frame 1. During equipment operation, especially when the support plate 3 reciprocates, the lower center of gravity effectively reduces the risk of swaying and tipping of the frame 1 caused by movement. For example, when rapidly moving the support plate 3 for battery transfer and weighing operations, the frame 1 remains stable and will not shift or tilt due to inertia or impact, ensuring the stability and reliability of equipment operation. The counterweight 16 helps balance the various forces borne by the frame 1 under different operating conditions.

[0052] During the weighing process, when the battery is placed on the pad 5, and during operations such as conveying and limiting, different parts of the frame 1 will be subjected to forces of different directions and magnitudes. The counterweight 16 can adjust the overall force distribution, making the resultant force on the frame 1 more uniform, reducing deformation of the frame 1 or damage to components caused by uneven force, and extending the service life of the equipment. After the center of gravity is lowered, the frame 1's sway amplitude is reduced when subjected to external vibrations. This means that the transmission of external vibrations to the weighing device 2 is also reduced accordingly, thereby reducing the interference of vibration on the weighing results. For example, in an environment where other equipment in the workshop generates vibrations, the weighing device 2 can measure the battery weight more stably, ensuring the accuracy of the weighing data and providing a reliable basis for quality control in the lithium battery production process.

[0053] The vibration-damping feet 17 typically employ elastic materials or shock-absorbing structures internally to effectively buffer vibrations transmitted from the outside to the frame 1. Whether the vibration originates from the workshop floor or is generated by the operation of nearby large equipment, the vibration-damping feet 17 absorbs or disperses some of the energy before the vibration reaches the frame 1. For example, when a crane passes by in the workshop causing ground vibration, the vibration-damping feet 17 can reduce the impact of the vibration on the frame 1, preventing vibration from interfering with the weighing process. By mitigating the impact of external vibrations on the weighing mechanism, the vibration-damping feet 17 create a relatively stable environment for weighing. This allows the weighing instrument 2 to more accurately sense the true weight of the battery when measuring its weight, avoiding fluctuations in weighing data due to vibration, and improving the stability and reliability of the weighing results.

[0054] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A tamper-proof weighing mechanism for lithium batteries, characterized in that: The utility model relates to a battery weighing device, including frame (1), set up on frame (1) weigher (2), reciprocating motion is set up on frame (1) support plate (3) and are used for driving support plate (3) reciprocating motion first drive mechanism (4), support plate (3) is located weigher (2) above, be equipped with the pad (5) for placing battery on weigher (2), support plate (3) is equipped with the through -hole (31) of cooperation pad (5) use, first drive mechanism (4) drives support plate (3) and moves and exposes pad (5) from through -hole (31) to cooperate subsequent manual or automatic placing battery on pad (5) via weigher (2) to battery is weighed.

2. The interference-proof weighing mechanism for lithium batteries of claim 1, wherein: The support plate (3) is provided with a rotating roller conveyor line (6) and a second driving mechanism (7) for driving the rotation of the roller conveyor line (6), and the second driving mechanism (7) drives the roller conveyor line (6) to move the battery to the pad (5) for weighing the battery.

3. The interference-proof weighing mechanism of claim 2, wherein: The pad (5) is provided with a limiting protrusion (8) for cooperating with the roller conveyor line (6), and the support plate (3) is driven by the first driving mechanism (4) to pass through the limiting protrusion (8) and the roller conveyor line (6), thereby lifting the battery for weighing.

4. The interference-proof weighing mechanism for lithium batteries of claim 1, wherein: The first driving mechanism (4) has a guide cylinder (41) arranged on the frame (1), and the output end of the guide cylinder (41) is provided with a push plate (42), and a guide assembly (43) is arranged between the push plate (42) and the support plate (3), and the guide cylinder (41) drives the push plate (42) to drive the support plate (3) to reciprocate on the frame (1) through the guide assembly (43).

5. The interference-proof weighing mechanism for lithium batteries of claim 2, wherein: The anti-interference weighing mechanism further comprises two driving cylinders (9) arranged in parallel on the support plate (3), the two driving cylinders (9) are located on both sides of the roller conveyor line (6), the output end of the driving cylinder (9) is provided with a limiting plate (14), and the two driving cylinders (9) drive the two limiting plates (14) to approach each other to limit the battery on the roller conveyor line (6).

6. The interference-proof weighing mechanism of claim 2, wherein: A plurality of limiting wheels (15) for limiting the battery are rotatably installed on the roller conveyor line (6), and the plurality of limiting wheels (15) are arranged along the conveying direction of the roller conveyor line (6).

7. The interference-proof weighing mechanism for lithium batteries of claim 1, wherein: The frame (1) has a base frame (11) and a bearing platform (12) arranged on the base frame (11), and the weigher (2) is arranged on the bearing platform (12), and an equal-height block (13) is arranged between the bearing platform (12) and the base frame (11).

8. The interference-proof weighing mechanism of claim 4, wherein: The guide assembly (43) has a guide rod (431) installed between the push plate (42) and the support plate (3), and the frame (1) is provided with a bearing seat (432) for installing the guide rod (431), and the guide cylinder (41) drives the push plate (42) and the support plate (3) to reciprocate on the frame (1) along the guide rod (431).

9. The interference-proof weighing mechanism of claim 3, wherein: The number of limiting protrusions (8) is multiple, and the multiple limiting protrusions (8) are arranged on the pad (5).

10. The interference-proof weighing mechanism for lithium batteries of claim 1, wherein: The bottom of the frame (1) is provided with a counterweight (16) and a shock-absorbing foot cup (17), the counterweight (16) is used to lower the center of gravity of the frame (1), and the shock-absorbing foot cup (17) is used to reduce the interference of external vibration on the weighing process.

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