Lithium battery detection mechanism after nail extraction

Abstract

The present invention discloses a detection mechanism for a lithium battery after nail pulling, which includes a bracket. An elevating driving member is arranged on the bracket, and the movable end of the elevating driving member is connected with an elevating plate. An elevating trigger member is vertically slidably arranged on the elevating plate, and a trigger detection member is also arranged on the elevating plate. It also includes a control unit and an alarm unit. When the elevating trigger member rises relative to the elevating plate, the trigger detection member can detect the elevating trigger member and transmit a signal to the control unit, and the control unit can control the alarm unit to give an alarm. The advantages of the present invention are as follows: It can detect the glue nails that have not been pulled out, thereby facilitating the operator to further process them to avoid product scrapping caused by the battery flowing into the next process.

Description

Technical Field

[0001] The invention relates to the field of lithium battery production, and in particular to a lithium battery post-nail removal detection mechanism. Background Art

[0002] Lithium batteries need to be placed at high temperature before formation after liquid injection. During this process, temporary glue nails need to be inserted into the liquid injection port, and nails need to be pulled out before formation. The position of the battery's liquid injection hole needs to be connected to the rubber-like suction nozzle in the vacuum pipeline of the formation equipment during the formation process to form a gas circuit, so that the gas generated during the formation process can be smoothly discharged from the inside of the battery cell and the electrolyte does not overflow as much as possible, thereby ensuring the formation quality and reducing the scrap rate of products in the formation stage. Therefore, it is required that all temporary glue nails inserted after one liquid injection must be pulled out before formation. In the prior art, for example, the glue nail pulling device disclosed in the Chinese utility model patent with publication number CN210167458U and the nail pulling device disclosed in the Chinese utility model patent with publication number CN210499138U can realize the removal of battery glue nails. The clamping claws of the existing automatic nail pulling equipment are mostly made of rubber material. The aging and friction coefficient reduction caused by the electrolyte overflow corrosion during the nail pulling process make some glue nails not pulled out from the battery body. If the glue nails of the battery body that have not been pulled out enter the formation process together with the battery body, the battery product will inevitably be scrapped and resources will be wasted. Summary of the invention

[0003] The technical problem to be solved by the present invention is:

[0004] In the prior art, after the nail pulling process, the unpulled plastic nails on the lithium battery cannot be detected, resulting in a technical problem that the battery flows into the next process and the product is scrapped.

[0005] The present invention solves the above technical problems by the following technical means:

[0006] A lithium battery post-nail removal detection mechanism comprises a bracket, a lifting drive member is arranged on the bracket, and a lifting plate is connected to the movable end of the lifting drive member;

[0007] A lifting trigger is vertically slidably provided on the lifting plate, and a trigger detection member is also provided on the lifting plate;

[0008] It also includes a control unit and an alarm unit. When the lifting trigger member is lifted relative to the lifting plate, the trigger detection member can detect the lifting trigger member and transmit a signal to the control unit. The control unit can control the alarm unit to alarm.

[0009] When the lithium battery nail-pulling detection mechanism in the present invention is actually applied, the detection mechanism is used for detecting the battery after the nail-pulling treatment. The detection mechanism is located above the battery. After the nail-pulling treatment, the lifting driving member drives the lifting plate to descend. If there are nail studs that have not been pulled out or tilted nail studs on the battery, as the lifting plate descends, the nail studs will block the descent of the lifting trigger member, that is, the lifting trigger member rises relative to the lifting plate. The detection member then detects the lifting trigger member and transmits a signal to the control unit, and the control unit controls the alarm unit to give an alarm, indicating that there are nail studs that have not been pulled out. The operator can then further process the nail studs that have not been pulled out to avoid product scrapping caused by the battery flowing into the next process. Its overall structure is simple, can be applied as an independent unit, and is sensitive and reliable, and can realize automatic nail stud detection.

[0010] Optimally, the bracket includes two vertically arranged legs and a fixing plate arranged between the two legs; the lifting driving member is arranged on the fixing plate.

[0011] Optimally, a lifting guiding pair is arranged between the lifting plate and the bracket.

[0012] Optimally, the lifting guiding pair adopts a guide pillar and guide sleeve guiding mechanism, a guide rail and slider guiding mechanism or a guide groove and slider guiding mechanism.

[0013] Optimally, a plurality of lifting trigger members are arranged, and the lifting trigger members are distributed in an array on the lifting plate.

[0014] Setting a plurality of lifting trigger members can realize the detection of a plurality of nail studs of a plurality of batteries, and the detection efficiency is relatively high.

[0015] Optimally, the lifting trigger member includes a lifting column vertically and slidably installed on the lifting plate, and a top block is arranged at the top end of the lifting column.

[0016] Optimally, an elastic body is arranged between the lifting column and the lifting plate, and the elastic body can apply a downward force to the lifting column.

[0017] The arrangement of the elastic body can ensure that the lifted lifting column can be smoothly reset after leaving the nail stud, preparing for the next detection, and the action is reliable.

[0018] Optimally, a connecting block is arranged at the lower end of the lifting column, the elastic body is sleeved on the lifting column, and the upper and lower ends of the elastic body respectively abut against the bottom of the lifting plate and the top of the connecting block.

[0019] Optimally, a contact block is arranged at the bottom of the connecting block, and the bottom surface of the contact block is larger than the nail stud to be detected.

[0020] The bottom surface of the contact block is set to be larger than the glue nail to be detected, which expands the detection range of the contact block and makes it easier to press on the glue nail that has not been pulled out. When a deviation causes the contact block to deviate from the center of the glue nail, the relatively large-sized contact block can still detect the glue nail, improving the reliability of detection.

[0021] Optimally, the trigger detector uses a laser signaler. When the lifting trigger member rises relative to the lifting plate, it can block the light beam emitted by the laser signaler.

[0022] The advantages of the present invention are as follows:

[0023] 1. When the lithium battery nail-pulling post-detection mechanism in the present invention is actually applied, the detection mechanism is used for detecting the battery after the nail-pulling process. The detection mechanism is located above the battery. After the nail-pulling process, the lifting driving member drives the lifting plate to descend. If there are glue nails that have not been pulled out or glue nails that are tilted on the battery, as the lifting plate descends, the glue nails will block the descent of the lifting trigger member, that is, the lifting trigger member rises relative to the lifting plate. The trigger detector then detects the lifting trigger member and transmits a signal to the control unit, and the control unit controls the alarm unit to give an alarm, indicating that there are glue nails that have not been pulled out. The operator can then further process the glue nails that have not been pulled out to avoid the battery flowing into the next process and causing product scrapping. Its overall structure is simple, it can be applied as an independent unit, and it is sensitive and reliable, and can realize automatic glue nail detection.

[0024] 2. Setting multiple lifting trigger members can realize the detection of multiple glue nails of multiple batteries, and the detection efficiency is relatively high.

[0025] 3. The setting of the elastic body can ensure that the lifted lifting column can be reset smoothly after leaving the glue nail, preparing for the next detection, and the action is reliable.

[0026] 4. The bottom surface of the contact block is set to be larger than the glue nail to be detected, which expands the detection range of the contact block and makes it easier to press on the glue nail that has not been pulled out. When a deviation causes the contact block to deviate from the center of the glue nail, the relatively large-sized contact block can still detect the glue nail, improving the reliability of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of the lithium battery nail-pulling post-detection mechanism in the embodiment of the present invention;

[0028] Figure 2 is Figure 1 a partial enlarged view of A in

[0029] Figure 3 is a cross-sectional view of the lifting trigger member in the embodiment of the present invention;

[0030] Among them,

[0031] Bracket - 11; Leg - 111; Fixed Plate - 112;

[0032] Lifting Driving Member - 12;

[0033] Lifting Plate - 13; Lifting Column Guide Sleeve - 131;

[0034] Lifting Trigger Member - 14; Lifting Column - 141; Top Block - 142; Elastic Body - 143; Connecting Block - 144; Contact Block - 145;

[0035] Trigger Detection Member - 15; Light Beam - 151; Connecting Seat - 152;

[0036] Lifting Guide Pair - 16; Fixed Plate Guide Sleeve - 161; Guide Post - 162;

[0037] Battery - 2; Glue Nail - 21. Specific Embodiment

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] As Figure 1 shown, a detection mechanism for a lithium battery after nail pulling includes a bracket 11, a lifting driving member 12, a lifting plate 13, a lifting trigger member 14, a trigger detection member 15, a lifting guide pair 16, a control unit, and an alarm unit.

[0040] As Figure 1 shown, a lifting driving member 12 is provided on the bracket 11, and the movable end of the lifting driving member 12 is connected to a lifting plate 13; a lifting trigger member 14 is vertically slidably provided on the lifting plate 13, and a trigger detection member 15 is also provided on the lifting plate 13; when the lifting trigger member 14 rises relative to the lifting plate 13, the trigger detection member 15 can detect the lifting trigger member 14 and transmit a signal to the control unit, and the control unit can control the alarm unit to give an alarm.

[0041] In this embodiment, the control unit uses a PLC. The PLC is a prior art. The lifting driving member 12 and the alarm unit are both controlled by the control unit. The alarm unit can display alarm information in ways such as sound, image, and text, for example, by using an alarm, an alarm light, a buzzer, or by displaying alarm information on a display screen, etc.

[0042] Specifically, as Figure 1As shown, the bracket 11 includes two vertically arranged legs 111 and a fixing plate 112 mounted between the two legs 111; the cross-section of the leg 111 is a right-angled U shape, and the fixing plate 112 is a rectangular plate structure. In practical applications, the legs 111 can be fixed on both sides of the roller conveyor line to realize the detection of the conveyed battery 2.

[0043] As Figure 1 shown, the lifting drive member 12 is arranged on the fixing plate 112. The lifting drive member 12 adopts a cylinder or a push rod motor, and the lifting drive member 12 is vertically installed above the middle of the fixing plate 112, and its movable end passes through the fixing plate 112 downward.

[0044] As Figure 1 shown, a lifting guide pair 16 is arranged between the lifting plate 13 and the bracket 11. The lifting guide pair 16 adopts a guide pillar and guide sleeve guiding mechanism, a guide rail and slider guiding mechanism or a guide groove and slider guiding mechanism. Specifically, when adopting the guide pillar and guide sleeve guiding mechanism, four fixing plate guide sleeves 161 are arranged on the fixing plate 112 in a rectangular distribution, and four guide pillars 162 are vertically arranged on the lifting plate 13, and the guide pillars 162 are slidably matched with the corresponding fixing plate guide sleeves 161.

[0045] When adopting the guide rail and slider guiding mechanism, two guide rails can be vertically arranged on the bracket 11, and sliders are arranged on the lifting plate 13, and the sliders are slidably matched with the guide rails, so as to achieve the guiding purpose.

[0046] When adopting the guide groove and slider guiding mechanism, a vertical guide groove, such as a dovetail groove, etc., can be opened on the bracket 11, and sliders are arranged on the lifting plate 13, and the sliders are slidably installed in the guide groove.

[0047] As Figure 1 shown, several lifting trigger members 14 are arranged, and the lifting trigger members 14 are arranged in an array on the lifting plate 13. The specific number of the lifting trigger members 14 is determined according to the battery 2 to be detected and the number of glue nails 21. In this embodiment, 16 lifting trigger members 14 are arranged in two rows and eight columns.

[0048] Specifically, as Figure 2 、 3 shown, a lifting column guide sleeve 131 is arranged on the lifting plate 13, the lifting trigger member 14 includes a lifting column 141 vertically slidably installed on the lifting plate 13, the lifting column 141 is cylindrical, the lifting column 141 is slidably matched with the corresponding lifting column guide sleeve 131, and a circular top block 142 is installed at the top of the lifting column 141 through a screw, and the top block 142 is located above the lifting column guide sleeve 131.

[0049] As Figure 2 、 3As shown, an elastic body 143 is provided between the lifting column 141 and the lifting plate 13. The elastic body 143 can be a spring, a rubber sleeve, etc. The elastic body 143 can apply a downward force to the lifting column 141.

[0050] Specifically, as Figure 2 , 3 shown, a circular connecting block 144 is installed at the lower end of the lifting column 141 by screws. The elastic body 143 is sleeved on the lifting column 141. The upper and lower ends of the elastic body 143 respectively abut against the bottom of the lifting column guide sleeve 131 of the lifting plate 13 and the top of the connecting block 144. The elastic body 143 has an initial tension.

[0051] As Figure 2 , 3 shown, a circular contact block 145 is installed at the bottom of the connecting block 144 by screws. The bottom surface of the contact block 145 is larger than the glue nail 21 to be detected.

[0052] As Figure 1 shown, the trigger detection member 15 is a laser signaler. A connecting seat 152 is provided on the lifting plate 13. The connecting seat 152 is an L-shaped plate structure. A pair of long holes are provided on the vertically downward edge of the connecting seat 152. The length direction of the long holes is along the vertical direction. The connecting seat 152 is installed on the lifting plate 13 by screws passing through the long holes. The laser signaler is installed on the top surface of the connecting seat 152. The height of the laser signaler can be adjusted through the long holes to meet the detection requirements of different heights. The center of the laser signaler and the light beam 151 transmitted and received by it are far higher than the glue nail, and both are located above the lifting plate 13. The glue nail 21 is located below the lifting plate 13, greatly reducing the influence of the slurry ejection on it.

[0053] As Figure 1 shown, the laser signaler can emit and receive light beams. When the lifting trigger member 14 rises relative to the lifting plate 13, it can block the light beam 151 emitted by the laser signaler. The number of laser signalers is set according to actual needs. The light beam 151 can pass above several top blocks 142. In this embodiment, a laser signaler is provided on each side of the four top blocks 142 at both ends of each row. The light beam 151 can pass through the centers of the four top blocks 142.

[0054] Further, as Figure 1 , 2 shown, in this embodiment, the diameter of the top block 142 is larger than the diameter of the glue nail 21, preferably more than 1.5 times the diameter of the glue nail 21, so that the probability of the light beam 151 detecting the top block 142 is much greater than the probability of detecting the glue nail, and the detection is more reliable.

[0055] Working principle:

[0056] When the lithium battery nail-pulling detection mechanism in the present invention is actually applied, the detection mechanism is used for detecting the battery 2 after nail-pulling treatment, and is specifically applied after the primary liquid injection and nail-pulling process and before the formation process of lithium battery products to detect whether the remaining glue nails are separated from the battery body. The detection mechanism is located above the battery 2. After nail-pulling treatment, the lifting drive member 12 drives the lifting plate 13 to descend. If there are glue nails 21 that have not been pulled out or tilted glue nails 21 on the battery 2, as the lifting plate 13 descends, the glue nails 21 will block the descent of the lifting trigger member 14, that is, the lifting trigger member 14 rises relative to the lifting plate 13, and the detection member 15 detects the lifting trigger member 14 and transmits a signal to the control unit. The control unit controls the alarm unit to give an alarm, indicating that there are glue nails 21 that have not been pulled out, and the operator can further process the glue nails 21 that have not been pulled out to avoid product scrapping caused by the battery 2 flowing into the next process. Its overall structure is simple, can be applied as an independent unit, and is sensitive and reliable, and can realize automatic glue nail detection. When the lifting plate 13 descends to the lower limit, if there is no glue nail 21 blocking the lifting trigger member 14, the lifting trigger member 14 will not rise relative to the lifting plate 13, and no alarm will be issued. When the lifting plate 13 descends to the lower limit, the distance between the bottom surface of the contact block 145 and the battery below it is 0.1 mm.

[0057] This detection mechanism is particularly suitable for being installed after the nail-pulling station to avoid the slurry or vapor instantaneously ejected during nail-pulling from contaminating the laser. In addition, the diameter of the top block 142 provided by the mechanism is much larger than the diameter of the glue nail, which plays the role of an amplifier and improves the reliability of detection.

[0058] Setting multiple lifting trigger members 14 can realize the detection of multiple glue nails 21 of multiple batteries 2, and the detection efficiency is relatively high. The setting of the elastic body 143 can ensure that the lifting column 141 can be smoothly reset after being lifted and leaving the glue nail 21, preparing for the next detection, and the action is reliable. Setting the bottom surface of the contact block 145 to be larger than the glue nail 21 to be detected expands the detection range of the contact block 145, making it easier to press on the glue nail 21 that has not been pulled out. When a deviation occurs and the contact block 145 deviates from the center of the glue nail 21, the relatively large contact block 145 can also detect the glue nail 21, improving the reliability of detection.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection mechanism for a lithium battery after nail extraction, characterized in that: It includes a bracket (11), on which a lifting drive member (12) is provided, and the movable end of the lifting drive member (12) is connected to a lifting plate (13); A plurality of lifting trigger members (14) are vertically slidably arranged on the lifting plate (13), and a trigger detection member (15) is also provided on the lifting plate (13); the bottom surfaces of the contact blocks (145) correspondingly arranged at the bottoms of the lifting trigger members (14) are all larger than the glue nails (21) to be detected; the trigger detection member (15) adopts a laser signal device, and when each lifting trigger member (14) rises relative to the lifting plate (13), it can independently block the light beam (151) emitted by the laser signal device; It further includes a control unit and an alarm unit. When each lifting trigger member (14) rises relative to the lifting plate (13), the trigger detection member (15) can detect each lifting trigger member (14) and transmit a signal to the control unit, and the control unit can control the alarm unit to give an alarm.

2. The lithium battery nail-pulling detection mechanism according to claim 1, characterized in that: The bracket (11) includes two vertically arranged legs (111) and a fixing plate (112) erected between the two legs (111); the lifting drive member (12) is arranged on the fixing plate (112).

3. The lithium battery nail-pulling detection mechanism according to claim 1, wherein: A lifting guiding pair (16) is arranged between the lifting plate (13) and the bracket (11).

4. The lithium battery nail-pulling detection mechanism according to claim 3, wherein: The lifting guiding pair (16) adopts a guide post and guide sleeve guiding mechanism, a guide rail and slider guiding mechanism or a guide groove and slider guiding mechanism.

5. The lithium battery nail-pulling detection mechanism according to claim 1, wherein: A plurality of lifting trigger members (14) are provided, and the lifting trigger members (14) are arranged in an array on the lifting plate (13).

6. The nail extraction detection mechanism for lithium batteries according to claim 1, characterized in that: The lifting trigger member (14) includes a lifting column (141) vertically slidably installed on the lifting plate (13), and a top block (142) is arranged at the top of the lifting column (141).

7. The lithium battery nail-pulling detection mechanism according to claim 6, characterized in that: An elastic body (143) is arranged between the lifting column (141) and the lifting plate (13), and the elastic body (143) can apply a downward force to the lifting column (141).

8. The lithium battery nail-pulling detection mechanism according to claim 7, characterized in that: A connecting block (144) is arranged at the lower end of the lifting column (141), the elastic body (143) is sleeved on the lifting column (141), and the upper and lower ends of the elastic body (143) respectively abut against the bottom of the lifting plate (13) and the top of the connecting block (144).

9. The lithium battery nail-pulling detection mechanism according to claim 8, characterized in that: A contact block (145) is arranged at the bottom of the connecting block (144).

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