Cover pressing device for lithium ion battery cell
By designing a capping device for lithium-ion battery cells, the elastic downward thrust of the elastic element is used to press the cap into the housing, solving the problem of cap lifting and rebounding, improving the sealing and safety of the battery cell, and increasing the pass rate of the battery cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-20
AI Technical Summary
During the sealing process of lithium-ion cells, a loose fit between the cap and the casing can cause the cap to lift and rebound, affecting the cell's sealing and safety, and reducing the pass rate.
Design a capping device including a mounting block, an adjustment component, a capping component, a sleeve, and an elastic element. The mounting block is driven vertically by a drive mechanism, and the cap is pressed into the housing by the elastic downward thrust of the elastic element, thus changing the rigid contact to an elastic contact to protect the cap.
It effectively prevents the cap from tilting, improves the sealing and safety of the battery cell, and increases the pass rate of the battery cell.
Smart Images
Figure CN224020767U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium ion battery technical field especially a gland device for lithium ion battery core. BACKGROUND
[0002] Lithium ion batteries are widely used in various fields, during the pre-sealing process of the battery core, there is a certain matching looseness tolerance problem after the cap and the shell are closed, so that the cap is warped and rebounds at the shell opening of the shell, the battery core sealing cap will appear skew phenomenon, and further affect the sealing, safety and qualified rate of the battery core. UTILITY MODEL CONTENTS
[0003] The technical problem to be solved by the embodiment of the utility model lies in providing a gland device for lithium ion battery core to solve the problem that the cap is warped and rebounds at the shell opening of the shell in the prior art, the battery core sealing cap will appear skew phenomenon, and further affect the sealing, safety and qualified rate of the battery core.
[0004] The utility model discloses a kind of gland devices for lithium ion battery core, it include: mounting block, adjusting assembly, gland assembly, sleeve and elastic piece, the side of the mounting block is connected with drive mechanism, drive mechanism is used to drive the mounting block moves in vertical direction;Adjusting assembly includes adjusting rod and the knob of sleeve setting at one end of the adjusting rod, the other end of the adjusting rod is connected with the top of the mounting block;Gland assembly includes the installation plate and the pressing plate of relative arrangement and the two connecting rods for connecting the installation plate and the pressing plate, the installation plate is located above the mounting block and can movably sleeve setting on the adjusting rod, the connecting rod can movably be arranged on the mounting block, the pressing plate is located below the mounting block;The adjusting rod is located between two connecting rods;The sleeve sleeve setting is on the adjusting rod, and is located between the installation plate and the mounting block;Elastic piece sleeve setting is on the adjusting rod and is located between the knob and the installation plate.
[0005] Optionally, the knob is screw connected with the adjusting rod, and the distance between the knob and the installation plate can be changed.
[0006] Optionally, one side of the mounting block is formed with a mounting notch, and the mounting notch is clamped on the drive mechanism.
[0007] Optionally, one side of the mounting block, away from the mounting notch, is provided with a sensor, and a sensing column is further provided on the pressing plate, a free end of the sensing column is kept at a preset distance from the sensor, and the sensing column can extend into the sensor.
[0008] Optionally, a cover is arranged on the mounting block, the sensor is located in the cover, and a through hole is formed in a side of the cover close to the pressing plate, and the inductive column extends into the cover through the through hole.
[0009] Optionally, the sensor is a photoelectric reflection sensor.
[0010] Optionally, the elastic member is a coil spring.
[0011] Optionally, the surface area of the pressing plate is greater than the surface area of the cap.
[0012] Optionally, the pressing plate is made of a metal material.
[0013] Optionally, the knob is a nut.
[0014] Compared with the prior art, the beneficial effect of the pressure cover device for the lithium ion cell provided in the embodiment of the utility model lies in that, in the use process, the initial position is that the pressure cover device is located above the shell of the cell and maintains a certain distance from the shell, the mounting block is arranged on the external driving mechanism, the mounting block is driven to move in the vertical direction by the driving mechanism, so as to press down the cap on the shell and make it located in the cap rebound position. Specifically, the driving mechanism drives the mounting block to move downward, drives the whole pressure cover device to move downward together, so that the pressing plate of the pressure cover assembly contacts the cap. Since the mounting plate is movably sleeved on the adjusting rod and the connecting rod is movably arranged on the mounting block, therefore, the adjusting assembly can move upward after being subjected to the reaction force of the cap, the mounting plate moves upward and presses the elastic member, and the elastic downward pressing force is formed under the action of the knob, so as to press the cap into the shell. The elastic downward pressing force of the embodiment can change the rigid contact between the pressing plate and the cap into elastic contact while pressing the cap into the shell, so as to achieve the purpose of protecting the cap and prevent the cap from being damaged. The pressure cover device of the embodiment can press the cap raised on the shell into the shell, so as to prevent the phenomenon of the cap being inclined after the cell is sealed, and improve the sealing performance, safety and qualified rate of the cell. BRIEF DESCRIPTION OF DRAWINGS
[0015] The technical scheme of the utility model will be further explained in detail below by combining with the drawings and embodiments, and the drawings are as follows:
[0016] Figure 1 is the whole structure schematic view of the pressure cover device for the lithium ion cell provided in the embodiment of the utility model;
[0017] Figure 2 is the structure schematic view of the cover provided in the embodiment of the utility model;
[0018] Figure 3This is a schematic diagram of the structure of the capping device and the battery cell when the capping device is in the initial position according to the embodiment of this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the capping device provided in this embodiment of the utility model.
[0020] The labels for the attached figures are as follows:
[0021] 10. Mounting block; 101. Mounting notch; 20. Adjustment assembly; 210. Adjustment rod; 220. Knob; 30. Cover assembly; 310. Mounting plate; 320. Pressure plate; 330. Connecting rod; 40. Sleeve; 50. Elastic element; 60. Cover; 601. Through hole; 70. Sensing column; 810. Housing; 820. Cap; 830. Cap rebound position. Detailed Implementation
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0023] This utility model embodiment provides a capping device for lithium-ion battery cells, such as... Figures 1 to 4 As shown, the assembly includes a mounting block 10, an adjusting component 20, a pressure cap assembly 30, a sleeve 40, and an elastic element 50. One side of the mounting block 10 is connected to a drive mechanism (not shown), which drives the mounting block 10 to move vertically. The adjusting component 20 includes an adjusting rod 210 and a knob 220 sleeved on one end of the adjusting rod 210. The knob 220 is screwed to the adjusting rod 210, and the other end of the adjusting rod 210 is connected to the top of the mounting block 10. The pressure cap assembly 30 includes a mounting plate 310 and a pressure plate 320 disposed opposite to each other, and a connecting element 50. The connecting rod 330 of the mounting plate 310 and the pressure plate 320; the mounting plate 310 is located above the mounting block 10 and is movably sleeved on the adjusting rod 210; the connecting rod 330 is movably inserted on the mounting block 10; the pressure plate 320 is located below the mounting block 10; the sleeve 40 is sleeved on the adjusting rod 210 and is located between the mounting plate 310 and the mounting block 10; the elastic element 50 is sleeved on the adjusting rod 210 and is located between the knob 220 and the mounting plate 310; the elastic element 50 is sleeved on the adjusting rod 210 and is located between the knob 220 and the mounting plate 310.
[0024] In this embodiment, the capping device for lithium-ion battery cells is initially positioned above the battery cell housing 810 and maintains a certain distance from the housing 810 during use. Figure 3As shown), the mounting block 10 is mounted on the external drive mechanism. The drive mechanism drives the mounting block 10 to move in the vertical direction, so as to press down the cap 820 on the housing 810 and make it located in the cap rebound position 830 of the housing 810. Specifically, the drive mechanism drives the mounting block 10 to move downwards, causing the entire capping device to move downwards as well. This causes the pressure plate 320 of the capping assembly 30 to contact the cap 820. Since the mounting plate 310 is movably sleeved on the adjusting rod 210 and the connecting rod 330 is movably inserted through the mounting block 10, the adjusting assembly 20 can move upwards after being subjected to the reaction force of the cap 820. The mounting plate 310 then moves upwards and squeezes the elastic member 50. Under the action of the knob 220, a vertically downward elastic pressing force is formed, thereby pressing the cap 820 into the housing 810. In this embodiment, the elastic pressing force can not only press the cap 820 into the housing 810, but also change the rigid contact between the pressure plate 320 and the cap 820 into an elastic contact, thereby achieving the purpose of protecting the cap 820 and preventing damage to the cap 820. The capping device in this embodiment can press the raised cap 820 on the housing 810 into the housing 810, thereby preventing the cap 820 from tilting after the battery cell is sealed, and improving the sealing performance, safety and pass rate of the battery cell.
[0025] In practical applications, the cap bounces back at the opening of the housing 810 (i.e., the cap rebound position 830).
[0026] The drive mechanism in this embodiment is an existing structure and can be a drive cylinder; no specific limitation is made here.
[0027] As a preferred embodiment, refer to Figure 1 The knob 220 is screwed to the adjusting rod 210, which can change the distance between the knob 220 and the mounting plate 310.
[0028] In actual operation, there are various specifications of battery cells, so the height of the housing 810 is also different. When the capping device of this embodiment presses down the cap 820 on the housing 810 of different heights, the knob 220 can be screwed in or out on the adjusting rod 210 to change the distance between the knob 220 and the mounting plate 310, so that the elastic deformation distance of the elastic member 50 changes, generating different sizes of elastic downward pressing force to adapt to housings 810 of different heights. This improves the applicability of the capping device of this embodiment and is conducive to the promotion and use of the capping device.
[0029] In this embodiment, the distance between the knob 220 and the mounting plate 310 is adjusted by operating the knob 220. The knob 220 is screwed to the adjusting rod 210, which makes the adjustment reliable and convenient to use, and improves the controllability of the capping device.
[0030] As a preferred embodiment, refer toFigure 1 A mounting notch 101 is formed on one side of the mounting block 10, and the mounting notch 101 is engaged with the drive mechanism.
[0031] The mounting block 10 has an installation notch 101 formed on it. The mounting block 10 is held on the drive mechanism by the installation notch 101, which allows the mounting block 10 to be quickly placed on the drive mechanism. This makes it convenient to use and also ensures strong installation stability.
[0032] As a preferred embodiment, refer to Figure 1 A sensor (not shown in the figure) is provided on the side of the mounting block 10 away from the mounting notch 101. A sensing post 70 is also provided on the pressure plate 320. The free end of the sensing post 70 is kept at a preset distance from the sensor, and the sensing post 70 can extend into the photoelectric sensor.
[0033] In practical applications, initially, the sensing post 70 maintains a preset distance from the sensor. After the cap assembly 30 contacts the cap 820 during operation, it moves upwards, causing the sensing post 70 to move closer to the sensor and allowing its free end to extend into the sensor. At this point, the sensor emits a sensing signal. After the cap 820 is pressed in, the capping device returns to its initial position under the action of the drive mechanism. At this time, the sensing post 70 and the sensor also return to their initial positions (i.e., the free end of the sensing post 70 maintains a preset distance from the sensor). The sensing post 70 will not trigger the sensor. The success of the capping device's reset can be determined based on the working status of the sensing post 70 and the sensor. This ensures the continuity and reliability of the capping device's operation.
[0034] As a preferred embodiment, refer to Figure 1 and Figure 2 The mounting block 10 is provided with a cover 60, the sensor is located inside the cover 60, and a through hole 601 is formed on the side of the cover 60 near the pressure plate 320. The sensing column 70 extends into the cover 60 through the through hole 601.
[0035] The housing 60 is designed to protect the stability and reliability of the sensor, preventing dust, moisture, liquids, or other contaminants from entering the sensor, thereby protecting the sensor components from damage and extending the sensor's lifespan. The through-hole 601 formed at the top of the housing 60 allows the sensing post 70 to extend into the housing 60 through the through-hole 601, providing an installation environment for the sensing post 70.
[0036] As a preferred embodiment, the sensor is a photoelectric through-beam sensor.
[0037] Among them, the photoelectric through-beam sensor has the advantages of non-contact measurement, high precision, fast response, wide applicability, high stability and easy installation and maintenance, which can ensure the reliability of the capping device in this embodiment.
[0038] As a preferred embodiment, refer to Figure 1 The elastic element 50 is a helical spring.
[0039] The use of a helical spring facilitates the fitting of the elastic element 50 onto the adjusting rod 210. The helical spring can store mechanical energy. When an external force is applied to the spring, the spring will deform and store energy. Once the external force decreases or disappears, the spring will release the stored energy, return to its original shape, and generate an elastic downward thrust. The elastic downward thrust can press the cap 820 into the housing 810.
[0040] As a preferred embodiment, refer to Figure 2 and Figure 3 The surface area of the pressure plate 320 is greater than the surface area of the cap 820.
[0041] The pressure plate 320 has a larger surface area than the cap 820. When using the capping device, the pressure plate 320 can cover the cap 820, increasing the contact area between the pressure plate 320 and the cap 820, so that the cap 820 is subjected to uniform force and the pressing effect of the cap 820 is guaranteed.
[0042] As a preferred embodiment, the pressure plate 320 is made of metal.
[0043] Among them, the pressure plate 320 is made of metal material, which further enhances the downward pressure effect of the cap 820.
[0044] As a preferred embodiment, the knob 220 is a nut.
[0045] Among them, knob 220 is a nut, which makes it easy for users to operate knob 220. The nut is a commonly used standard part, which is easy to obtain and has low cost.
[0046] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.
Claims
1. A capping device for lithium-ion battery cells, characterized in that, include: Mounting block, one side of which is connected to a drive mechanism, which is used to drive the mounting block to move in the vertical direction; The adjustment assembly includes an adjustment rod and a knob sleeved on one end of the adjustment rod, and the other end of the adjustment rod is connected to the top of the mounting block; The pressure cap assembly includes a mounting plate and a pressure plate disposed opposite to each other, and two connecting rods for connecting the mounting plate and the pressure plate. The mounting plate is located above the mounting block and is movably sleeved on the adjusting rod. The connecting rods are movably inserted through the mounting block. The pressure plate is located below the mounting block. The adjusting rod is located between the two connecting rods. A sleeve is fitted onto the adjusting rod and located between the mounting plate and the mounting block; An elastic element is sleeved on the adjusting rod and located between the knob and the mounting plate.
2. The capping device according to claim 1, characterized in that, The knob is screwed to the adjusting rod, which can change the distance between the knob and the mounting plate.
3. The capping device according to claim 2, characterized in that, One side of the mounting block has an installation notch, which is engaged with the drive mechanism.
4. The capping device according to claim 3, characterized in that, A sensor is provided on the side of the mounting block away from the mounting notch, and a sensing post is also provided on the pressure plate. The free end of the sensing post is kept at a preset distance from the sensor, and the sensing post can extend into the sensor.
5. The capping device according to claim 4, characterized in that, The mounting block is provided with a cover, the sensor is located inside the cover, and a through hole is formed on the side of the cover near the pressure plate. The sensing column extends into the cover through the through hole.
6. The capping device according to claim 4, characterized in that, The sensor is a photoelectric through-beam sensor.
7. The capping device according to any one of claims 1 to 6, characterized in that, The elastic element is a helical spring.
8. The capping device according to claim 7, characterized in that, The surface area of the pressure plate is greater than the surface area of the cap.
9. The capping device according to claim 7, characterized in that, The pressure plate is made of metal.
10. The capping device according to claim 7, characterized in that, The knob is a nut.