Cap position deviation rectifying mechanism
By designing the cap position correction mechanism, the cap is tilted by using the bias correction driver and clamp, the battery sealing problem caused by the skewed cap is solved, and the battery liquid retention and sealing quality are improved.
Patent Information
- Application Number
- CN202420215716.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-30
AI Technical Summary
In the battery preparation process, the cap is prone to skew due to deformation of the extreme ear, resulting in insufficient vertical height, residual electrolyte in the inner wall of the cap during the liquid injection process, affecting the liquid retention volume and sealing appearance, and the sealing yield decreases.
A cap position correction mechanism is designed, including a mounting frame, a bias correction drive member, a first bias correction clamp and a second bias correction clamp. The cap is clamped by a bias correction drive member to make it move away from the battery case. Inclined to ensure that the cap is consistent with the open end of the housing.
By correcting the position of the cap, avoiding the contact between the liquid injection needle and the cap, improving the battery liquid retention volume and sealing appearance quality, enhancing the sealing yield, and reducing cross-contamination of the cap electrolyte and residual electrolyte in the sealing mold.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery preparation, in particular to a cap position correction mechanism. Background Art
[0002] The battery preparation process includes: cap welding - liquid injection - sealing. After the cap is welded, the cap is set above the open end of the battery shell under the support of the pole ear, and then enters the automatic liquid injection line for liquid injection after manual placement. Since the pole ear is easy to deform, the cap may be skewed during the manual placement process or the transportation process. The skew of the cap will mainly lead to the following two problems: First, the skew of the cap leads to insufficient vertical height. During the battery filling process, the positioning position of the injection needle nozzle contacts the cap, resulting in residual electrolyte on the inner wall of the cap and residual electrolyte on the steel cap of the cap, affecting the actual liquid retention of the battery and the overflow and rusting of the battery after sealing; Second, the skew of the cap is likely to cause the cap and the battery shell to be misaligned in the subsequent cap closing process, which directly causes a decrease in the sealing yield. Summary of the invention
[0003] The utility model aims to overcome the shortcomings of the prior art and provide a cap position correction mechanism.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A cap position correction mechanism, wherein the cap is arranged above the open end of a battery shell through a pole ear, comprising: a mounting frame, a correction drive, a first correction clamp and a second correction clamp, wherein the correction drive is arranged on the mounting frame, the first correction clamp and the second correction clamp are relatively arranged on the correction drive, and the correction drive is used to drive the first correction clamp and the second correction clamp to clamp the cap so that the cap is tilted in a direction away from the battery shell.
[0006] In one embodiment, the first correcting clamp is provided with a first inclined surface, and the second correcting clamp is provided with a second inclined surface matching the first inclined surface, and the correcting drive member drives the first correcting clamp and the second correcting clamp to approach each other so that the cap is clamped between the first inclined surface and the second inclined surface.
[0007] In one embodiment, the inclination angle of the first inclined surface is 30° to 80°.
[0008] In one embodiment, the inclination angle of the first slope is 45° to 60°.
[0009] In one embodiment, a buffer layer is disposed on the first inclined surface and the second inclined surface respectively.
[0010] In one embodiment, a first rounded corner is disposed at one end of the first inclined surface close to the cover cap, and a second rounded corner is disposed at one end of the second inclined surface close to the cover cap.
[0011] In one embodiment, the first correcting clamp block and the second correcting clamp block are both strip-shaped block structures, the first inclined surface is arranged along the length direction of the first correcting clamp block, the second inclined surface is arranged along the length direction of the second correcting clamp block, and the first inclined surface and the second inclined surface are arranged side by side along the length direction.
[0012] In one embodiment, the correcting drive component includes a guide rail slide cylinder, a first mounting block and a second mounting block, the guide rail slide cylinder is arranged on the mounting frame, the guide rail slide cylinder is provided with a first slide and a second slide, the first slide and the second slide can be opened and closed synchronously, the first mounting block is arranged on the first slide, and the second mounting block is arranged on the second slide.
[0013] In one embodiment, the first deflection-correcting clamp block is detachably mounted on the first mounting block, and the second deflection-correcting clamp block is detachably mounted on the second mounting block.
[0014] In one embodiment, the mounting frame includes a vertical plate and a horizontal plate, the horizontal plate is arranged on the upward end of the vertical plate, the correcting drive member is arranged on the downward side of the horizontal plate, and the correcting drive member is suspended above the cap through the mounting frame.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] The utility model provides a cap position correction mechanism, which mainly corrects the position of the cap before the liquid injection process. Firstly, it prevents the liquid injection needle from contacting the cap when injecting electrolyte at the positioning position, thereby affecting the liquid retention amount and improving the consistency of battery performance; secondly, it prevents the battery from rusting during customer use; at the same time, it prevents the cap electrolyte from cross-contaminating the sealing mold, thereby causing residual electrolyte crystallization in the sealing mold and affecting the battery sealing appearance; finally, after the cap is corrected, the position consistency of the cap and the opening end of the shell can be maintained, the alignment accuracy of the cap and the shell cover is improved, and the sealing yield rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a structural schematic diagram of a cap position correction mechanism according to one embodiment of the utility model.
[0019] Figure 2 It is a structural schematic diagram of a cap position correction mechanism according to one embodiment of the utility model.
[0020] The numbers in the figure are: 10, cap position correction mechanism; 100, mounting frame; 110, vertical plate; 120, horizontal plate; 200, correction drive member; 210, guide rail slide cylinder; 211, first slide; 212, second slide; 220, first mounting block; 230, second mounting block; 300, first correction clamping block; 310, first inclined surface; 311, chamfered corner; 400, second correction clamping block; 410, second inclined surface; 411, second chamfered corner. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0024] See also Figure 1 and Figure 2 A cap position correction mechanism 10, wherein the cap is arranged above the opening end of the battery shell through a pole ear, comprises: a mounting frame 100, a correction driving member 200, a first correction clamping block 300 and a second correction clamping block 400, wherein the correction driving member 200 is arranged on the mounting frame 100, and the first correction clamping block 300 and the second correction clamping block 400 are relatively arranged on the correction driving member 200, and the correction driving member 200 is used to drive the first correction clamping block 300 and the second correction clamping block 400 to clamp the cap so that the cap is tilted in a direction away from the battery shell.
[0025] It should be noted that in the field of micro batteries, the caps and battery shells are relatively small in size. For example, the diameter of a needle-type battery may be only 5 to 6 mm. Therefore, during manual loading or transportation, a slight tilt of the cap may cause the injection needle to contact the cap when injecting electrolyte at the positioning position, resulting in residual electrolyte on the cap. The main impacts are as follows: 1) The actual battery liquid volume is lower than the lower limit of the liquid volume process standard, and the battery performance risk soars, such as causing the ion transmission inside the battery to be blocked, thereby affecting the battery's discharge and charging rate; making it impossible to fully utilize the lithium ions inside the battery, thereby reducing the battery's energy density and cycle life; causing the temperature inside the battery to rise, increasing the battery's safety risk; the contact surface between the electrode and the electrolyte is reduced, hindering the electrode reaction and increasing the resistance inside the battery; 2) After the battery is sealed and left to stand for a long time, overflow and rust appear at the cap sealing position, which is verified by high temperature and high humidity for 7 consecutive days. The rust continues to expand, and there is a risk of battery short circuit; 3) There is residual electrolyte in the cap. During the battery sealing process, the residual electrolyte in the sealing mold forms crystals after a period of time. Thereby affecting the appearance of the sealed battery; 4) The crooked cap will lead to poor subsequent capping operations, which will directly affect the sealing yield.
[0026] The cap position correction mechanism 10 provided by the present patent has a compact structure and can be directly installed in the automatic liquid filling line. The cap position correction mechanism 10 can be set between the tray incoming material and the robot gripping and scanning code process, and the modification of the automatic liquid filling line is small. When the battery to be filled is transmitted to the working interval below the cap position correction mechanism 10, the correction drive 200 is started to drive the first correction clamp 300 and the second correction clamp 400 to move closer to each other until the battery cap is clamped between the first correction clamp 300 and the second correction clamp 400. Under the action of the clamping force, the cap position is tilted in the direction away from the battery shell, so that the cap makes way for the opening end of the shell to avoid contact between the injection needle and the cap.
[0027] See also Figure 1 and Figure 2Furthermore, a first inclined surface 310 is provided on the first correcting clamp 300, and a second inclined surface 410 matching the first inclined surface 310 is provided on the second correcting clamp 400. The correcting driving member 200 drives the first correcting clamp 300 and the second correcting clamp 400 to approach each other so that the cap is clamped between the first inclined surface 310 and the second inclined surface 410.
[0028] It should be noted that when the cap is clamped, the end face of the cap away from the battery shell abuts against the first bevel 310 after the cap is closed, and the side of the cap close to the battery shell abuts against the second bevel 410. Through the setting of the first bevel 310 and the second bevel 410, the position of the cap can be corrected according to the inclination angles of the first bevel 310 and the second bevel 410 after being clamped.
[0029] See also Figure 1 and Figure 2 , further, the inclination angle α of the first bevel 310 is 30°~80°. It should be noted that the inclination angle β of the second bevel 410 should be 180°-α. At this inclination angle, after the clamping operation, the cap can ensure a sufficient inclination angle for the injection needle to avoid the position; preferably, the inclination angle α of the first bevel 310 is 45°~60°, that is, clamping the cap at this inclination angle can keep the cap at an appropriate inclination angle, which is conducive to the subsequent closing operation.
[0030] Furthermore, a buffer layer is disposed on the first inclined surface 310 and the second inclined surface 410 , respectively.
[0031] It should be noted that the buffer layer plays a buffering role when the first inclined surface 310 and the second inclined surface 410 clamp the cap, so as to avoid excessive clamping impact force, which may cause the pole ear connected to the cap to break. Furthermore, the buffer layer can be formed by, for example, sticking a single-sided sponge tape on the first inclined surface 310 and the second inclined surface 410.
[0032] See also Figure 1 and Figure 2 Furthermore, a first chamfered corner 311 is provided at one end of the first inclined surface 310 close to the cap, and a second chamfered corner 411311 is provided at one end of the second inclined surface 410 close to the cap.
[0033] It should be noted that the design of the rounded corners 311 is mainly used to prevent the sharp edges of the first correcting clamp 300 and the second correcting clamp 400 from squeezing and scratching the tabs during the clamping process.
[0034] See also Figure 1 and Figure 2Furthermore, the first correcting clamp 300 and the second correcting clamp 400 are both strip-shaped block structures, the first inclined plane 310 is arranged along the length direction of the first correcting clamp 300, the second inclined plane 410 is arranged along the length direction of the second correcting clamp 400, and the first inclined plane 310 and the second inclined plane 410 are arranged side by side along the length direction.
[0035] It should be noted that designing the first correcting clamp 300 and the second correcting clamp 400 as bars can increase the length and area of the first inclined surface 310 and the second inclined surface 410, so that the cap position correction operation can be performed on the batteries to be filled in batches, thereby improving the correction efficiency.
[0036] See also Figure 1 and Figure 2 Furthermore, the deviation correction drive component 200 includes a guide rail slide cylinder 210, a first mounting block 220 and a second mounting block 230. The guide rail slide cylinder 210 is arranged on the mounting frame 100. The guide rail slide cylinder 210 is provided with a first slide 211 and a second slide 212. The first slide 211 and the second slide 212 can be opened and closed synchronously. The first mounting block 220 is arranged on the first slide 211, and the second mounting block 230 is arranged on the second slide 212.
[0037] It should be noted that the guide rail slide cylinder 210 can drive the first slide 211 and the second slide 212 to move closer to or away from each other, thereby driving the mounting block and the second mounting block 230 to move, and the guide rail slide cylinder 210 has the characteristics of small size, high movement stability, and good movement speed control, which can make the structure of the cap position correction mechanism 10 more compact and compact.
[0038] See also Figure 1 and Figure 2 Furthermore, the first correcting clamp block 300 can be detachably mounted on the first mounting block 220 , and the second correcting clamp block 400 can be detachably mounted on the second mounting block 230 .
[0039] It should be noted that the first correcting clamp 300 and the second correcting clamp 400 are detachably installed, and can be flexibly replaced when the clamps are damaged or when different sizes (such as different heights, different tilt angles) are required, making the cap position correcting mechanism 10 more adaptable.
[0040] See also Figure 1 and Figure 2Furthermore, the mounting frame 100 includes a vertical plate 110 and a horizontal plate 120, wherein the horizontal plate 120 is disposed at the upward end of the vertical plate 110, and the deflection correction driving member 200 is disposed at the downward side of the horizontal plate 120, and the deflection correction driving member 200 is suspended above the cap through the mounting frame 100. In this way, the deflection correction driving member 200 can drive the first deflection correction clamping block 300 and the second deflection correction clamping block 400 to perform position deflection correction operation on the cap above the battery housing.
[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A cap position correction mechanism, wherein the cap is arranged above the opening end of the battery housing through a tab, characterized in that: include: A mounting frame, a correcting drive, a first correcting clamp and a second correcting clamp, wherein the correcting drive is arranged on the mounting frame, the first correcting clamp and the second correcting clamp are relatively arranged on the correcting drive, and the correcting drive is used to drive the first correcting clamp and the second correcting clamp to clamp the cap so that the cap is tilted in a direction away from the battery casing.
2. The cap position correction mechanism according to claim 1, characterized in that: The first correcting clamp block is provided with a first inclined surface, and the second correcting clamp block is provided with a second inclined surface matching the first inclined surface. The correcting driving member drives the first correcting clamp block and the second correcting clamp block to approach each other so that the cap is clamped between the first inclined surface and the second inclined surface.
3. The cap position correction mechanism according to claim 2, characterized in that: The inclination angle of the first inclined surface is 30°~80°.
4. The cap position correction mechanism according to claim 3, characterized in that: The inclination angle of the first inclined surface is 45°~60°.
5. The cap position correction mechanism according to claim 2, characterized in that: Buffer layers are respectively disposed on the first inclined surface and the second inclined surface.
6. The cap position correction mechanism according to claim 2, characterized in that: One end of the first inclined surface close to the cover cap is provided with a first rounded corner, and one end of the second inclined surface close to the cover cap is provided with a second rounded corner.
7. The cap position correction mechanism according to claim 2, characterized in that: The first correcting clamp block and the second correcting clamp block are both strip-shaped block structures, the first inclined surface is arranged along the length direction of the first correcting clamp block, the second inclined surface is arranged along the length direction of the second correcting clamp block, and the first inclined surface and the second inclined surface are arranged side by side along the length direction.
8. The cap position correction mechanism according to claim 1, characterized in that: The deviation correction drive component includes a guide rail slide cylinder, a first mounting block and a second mounting block. The guide rail slide cylinder is arranged on the mounting frame. The guide rail slide cylinder is provided with a first slide and a second slide. The first slide and the second slide can be opened and closed synchronously. The first mounting block is arranged on the first slide, and the second mounting block is arranged on the second slide.
9. The cap position correction mechanism according to claim 8, characterized in that: The first deviation-correcting clamping block is detachably mounted on the first mounting block, and the second deviation-correcting clamping block is detachably mounted on the second mounting block.
10. The cap position correction mechanism according to claim 1, characterized in that: The mounting frame comprises a vertical plate and a horizontal plate, wherein the horizontal plate is arranged at an upward end of the vertical plate, and the deviation-correcting driving member is arranged at a downward side of the horizontal plate, and the deviation-correcting driving member is suspended above the cap through the mounting frame.