Battery bottom welding equipment and production line

Abstract

The utility model discloses battery bottom welding equipment and production line, battery bottom welding equipment comprises a conveying mechanism, a driving mechanism, a hot broaching mechanism, a center hole detection mechanism and a welding mechanism, the driving mechanism comprises a driving main shaft and a plurality of cam connecting rod parts, and the driving main shaft drives the plurality of cam connecting rod parts to move; the multiple cam connecting rod components can drive the reaming component and the negative electrode welding pin to move, the reaming component and the negative electrode welding pin use the same power source, and the stability of equipment operation is improved. And the heated reaming part irons the center hole, so that the center hole can be expanded and subjected to thermoplastic molding, and a welding needle can be conveniently inserted. The center hole detection mechanism detects the center hole before welding and judges whether the center hole of the battery meets the requirement for insertion of the welding pin or not. The welding mechanism comprises a positive electrode welding needle, a negative electrode welding needle and a first driving component, the first driving component drives the positive electrode welding needle to move, the cam connecting rod component drives the negative electrode welding needle to move, welding of the battery cell bottom and the steel shell is completed, and the welding effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field, especially relate to battery bottom welding equipment and production line. BACKGROUND

[0002] With the high -speed development of lithium battery industry, the use of lithium battery is more and more widely. To meet market demand, lithium battery equipment is also constantly improving, constantly refining new. In the battery production process, the cell bottom and steel shell need to be fixed together. When welding, the welding needle needs to be inserted into the center hole of the battery, and in actual production, the center hole of the battery is deformed, and the welding needle cannot be inserted. When the welding needle is inserted into the center hole, the battery roll core is loose, and the hole blocking phenomenon is easily generated. In continuous work, the welding needle is easy to overheat, affects the service life, and the welding effect is poor. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art. Therefore, the utility model provides battery bottom welding equipment, can avoid the center hole blocking caused by the deformation of the welding needle, and guarantee the welding effect.

[0004] The utility model further provides a production line comprising the above-mentioned battery bottom welding equipment.

[0005] The battery bottom welding equipment according to the first aspect embodiment of the utility model comprises

[0006] A conveying mechanism is used to convey the battery.

[0007] A driving mechanism comprises a driving main shaft and a plurality of cam link components, and the driving main shaft drives the plurality of cam link components to move.

[0008] A hot reaming mechanism comprises a heating component and a reaming component, the heating component is used to heat the reaming component, the reaming component is connected with the cam link component, and the cam link component drives the reaming component to move, so as to drive the reaming component to insert into the center hole of the battery.

[0009] A center hole detection mechanism is used to detect the center hole of the battery.

[0010] A welding mechanism comprises a positive electrode welding needle, a negative electrode welding needle and a first driving component, the first driving component drives the positive electrode welding needle to move, and the cam link component drives the negative electrode welding needle to move, so as to weld the cell.

[0011] The battery bottom welding equipment has at least the following beneficial effects: the battery bottom welding equipment comprises a conveying mechanism, a driving mechanism, a thermal reaming mechanism, a center hole detection mechanism and a welding mechanism, the driving mechanism comprises a driving main shaft and a plurality of cam link components, the driving main shaft drives the plurality of cam link components to move, the plurality of cam link components can drive a reaming component and a negative electrode welding needle to move, the reaming component and the negative electrode welding needle use the same power source, the action relationship is stable and related, and the action will not be disordered due to speed adjustment, thereby improving the stability of equipment operation. The heating component is used for heating the reaming component, the cam link component drives the reaming component to move, the heated reaming component is used for ironing the center hole, the center hole can be expanded and heat plasticized, and the insertion of the welding needle is facilitated. The center hole detection mechanism detects the center hole before welding, determines whether the center hole of the battery meets the requirement of the insertion of the welding needle, and avoids the deformation of the welding needle caused by the blockage of the center hole. The welding mechanism comprises a positive electrode welding needle, a negative electrode welding needle and a first driving component, the first driving component drives the positive electrode welding needle to move, the cam link component drives the negative electrode welding needle to move, the welding of the bottom of the battery cell and the steel shell can be completed, and the welding effect is ensured.

[0012] According to some embodiments of the present application, the thermal reaming mechanism is provided with a position sensor, and the position sensor is used for sensing the depth of the reaming component inserted into the center hole.

[0013] According to some embodiments of the present application, the battery ear correction mechanism comprises a sensing component, a pair of correction rubber wheels and a second driving component, the sensing component is used for sensing the position of the battery ear, and the second driving component drives the correction rubber wheels to drive the battery to move, so as to adjust the position of the battery ear.

[0014] According to some embodiments of the present application, the battery ear correction mechanism comprises a sensing component, a pair of correction rubber wheels and a second driving component, the sensing component is used for sensing the position of the battery ear, and the second driving component drives the correction rubber wheels to drive the battery to move, so as to adjust the position of the battery ear.

[0015] According to some embodiments of the present application, the welding mechanism further comprises a following component and a positioning sleeve, the positive electrode welding needle is arranged on the following component, the positioning sleeve is arranged below the following component, the positioning sleeve is connected with a nitrogen cooling component, and the positive electrode welding needle passes through the positioning sleeve.

[0016] According to some embodiments of the present application, the battery ear correction mechanism comprises a sensing component, a pair of correction rubber wheels and a second driving component, the sensing component is used for sensing the position of the battery ear, and the second driving component drives the correction rubber wheels to drive the battery to move, so as to adjust the position of the battery ear.

[0017] According to some embodiments of the utility model, still include feeding mechanism, the feeding mechanism includes feeding clamp jaw, the feeding clamp jaw with cam connecting rod part is connected, the cam connecting rod part drive the feeding clamp jaw relative battery motion.

[0018] According to some embodiments of the utility model, still include discharging mechanism, the discharging mechanism includes discharging clamp jaw, the discharging clamp jaw with cam connecting rod part is connected, the cam connecting rod part drive the discharging clamp jaw relative battery motion.

[0019] According to some embodiments of the utility model, still include secondary positioning mechanism, the secondary positioning mechanism includes locating block, the locating block with cam connecting rod part is connected, the cam connecting rod part drive the locating block relative battery motion.

[0020] The production line according to the second aspect of the utility model, including the battery bottom welding equipment of the first aspect of the utility model.

[0021] The production line according to the first aspect of the utility model, at least has following beneficial effects: the production line of the utility model, including the battery bottom welding equipment of the above embodiment, the reaming part and negative electrode welding needle are driven by using multiple cam connecting rod parts, the reaming part and negative electrode welding needle use same power source, and action relationship is stable and is associated, and action confusion caused by speed regulation can not be caused, so that the stability of equipment operation is improved.Heating component is used to heat the reaming part, the reaming part is moved by cam connecting rod part, and the reaming part after heating is used to iron the center hole, so that the center hole can be expanded and thermoplastic, and the insertion of welding needle is facilitated.Center hole detection mechanism detects the center hole before welding, determines whether the center hole of battery meets the requirement of welding needle insertion, and avoids the deformation of welding needle caused by center hole blockage.Welding mechanism includes positive electrode welding needle, negative electrode welding needle and first driving part, the first driving part drives the movement of positive electrode welding needle, and the cam connecting rod part drives the movement of negative electrode welding needle, so that the welding of the bottom of battery cell and steel shell can be completed, and the welding effect is guaranteed.

[0022] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0024] Figure 1 It is the structure schematic diagram of battery bottom welding equipment of the utility model one embodiment;

[0025] Figure 2is a structural schematic view of a driving main shaft of an embodiment of the utility model;

[0026] Figure 3 is a structural schematic view of a cam connecting rod part of an embodiment of the utility model;

[0027] Figure 4 is a structural schematic view of a hot reaming mechanism of an embodiment of the utility model;

[0028] Figure 5 is a structural schematic view of a welding mechanism of an embodiment of the utility model;

[0029] Figure 6 is a structural schematic view of a tab rectification mechanism of an embodiment of the utility model;

[0030] Figure 7 is a structural schematic view of a tab outer letting mechanism of an embodiment of the utility model;

[0031] Figure 8 is a structural schematic view of a turnover detection mechanism of an embodiment of the utility model;

[0032] Figure 9 is a structural schematic view of a feeding mechanism of an embodiment of the utility model;

[0033] Figure 10 is a structural schematic view of a discharging mechanism of an embodiment of the utility model;

[0034] Figure 11 is a structural schematic view of a secondary positioning mechanism of an embodiment of the utility model. DETAILED DESCRIPTION

[0035] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0036] In the description of the utility model, it is understood that the orientation description, such as up, down, front, back, left, right, inside, outside and the like, is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting the utility model.

[0037] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the first, the second is only used for distinguishing the technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0038] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection, assembly, cooperation should be broadly understood, and the specific meaning of the above words in the utility model can be reasonably determined by the skilled person in the technical field in combination with the specific content of the technical scheme.

[0039] The following refers to Figures 1 to 11 The battery bottom welding equipment of the utility model embodiment is described.

[0040] The battery bottom welding equipment of the utility model embodiment is described. Figures 1 to 11As shown, it comprises a conveying mechanism 100 for conveying the battery, a driving mechanism, a thermal reaming mechanism 300, a center hole detection mechanism 400 and a welding mechanism 500. The driving mechanism comprises a driving spindle 210 and a plurality of cam link components 220, the driving spindle 210 drives the plurality of cam link components 220 to move, the plurality of cam link components 220 can drive the reaming component 310 and the negative welding needle 520 to move, the reaming component 310 and the negative welding needle 520 use the same power source, the action relationship is stable and related, and the action will not be chaotic due to speed adjustment, thereby improving the stability of the equipment operation. The thermal reaming mechanism 300 comprises a heating component 320 and a reaming component 310, the heating component 320 is used for heating the reaming component 310, the reaming component 310 is connected with the cam link component 220, the cam link component 220 drives the reaming component 310 to move, the heated reaming component 310 irons the center hole, which can make the center hole expand and heat plastic, and facilitate the insertion of the welding needle. The center hole detection mechanism 400 detects the center hole before welding, determines whether the center hole of the battery meets the requirement of the insertion of the welding needle, and avoids the deformation of the welding needle caused by the blockage of the center hole. The welding mechanism 500 comprises a positive welding needle 510, a negative welding needle 520 and a first driving component 530, the first driving component 530 drives the positive welding needle 510 to move, the cam link component 220 drives the negative welding needle 520 to move, and the welding of the bottom of the battery cell and the steel shell can be completed, and the welding effect is ensured. It can be understood that in some embodiments, the first driving component 530 is provided as a driving motor, the motor drives the positive welding needle 510 to move downward, the cam link component 220 drives the upward negative welding needle 520 to move, and when the positive welding needle 510 and the negative welding needle 520 press the bottom of the battery cell and the steel shell tightly, the bottom of the battery cell and the steel shell are welded firmly by discharging the resistance welding machine. It should be noted that in some embodiments, the driving spindle 210 comprises a shaft body 211 and a power element 212 for driving the shaft body to move, the cam link component 220 comprises a cam 221, a swing arm 222, a connecting rod 223 and a reset spring 224, the driving spindle 210 drives the cam 221 to drive the swing arm 222 to move, the cam link component 220 is connected with the components of each station through the connecting rod 223, and the components of each station at the upper part are driven to move through the connecting rod 223. The reset spring 224 drives the cam link component 220 to reset, realizing the cyclic reciprocating motion.

[0041] According to some embodiments of the utility model, the thermal reaming mechanism 300 is provided with a position sensor 330, and the position sensor 330 is used for sensing the depth of the reaming part 310 inserted into the center hole. The thermal reaming mechanism 300 is used for reaming the center hole of the battery, so as to avoid the influence of the center hole blockage on the welding needle. Specifically, the thermal reaming mechanism 300 comprises a heating part 320 and a reaming part 310, the heating part 320 heats the reaming part 310, the heated reaming part 310 is inserted into the center hole of the battery under the driving of the cam connecting rod part 220, the thermal reaming mechanism 300 is provided with the position sensor 330, and whether the center hole is blocked can be judged according to the descending depth of the reaming part 310. The heated reaming part 310 irons the center hole, so that the center hole is expanded and hot plastic, and the insertion of the welding needle is facilitated. It should be noted that in some embodiments, the reaming part 310 is a needle-shaped workpiece, the needle-shaped reaming part 310 is inserted into the center hole, and the reaming process is completed by heating the reaming part 310.

[0042] According to some embodiments of the utility model, the utility model also includes tab correction mechanism 710, tab correction mechanism 710 includes response part 711, a pair of correction rubber wheel 712 and second drive part 713, response part 711 is used for responding tab position, second drive part 713 drives correction rubber wheel 712 and drives battery movement to adjust the position of tab. Correction rubber wheel 712 is provided with a pair, response part 711 responds to the position of the tab, the motor drives the rotation of the correction rubber wheel 712, the correction rubber wheel 712 drives the rotation of the battery, and the position correction of the battery is corrected by cooperating with the response of the response part 711 until the tab of the battery is positioned to the correct position.

[0043] According to some embodiments of the utility model, the utility model also includes tab correction mechanism 710, tab correction mechanism 710 includes response part 711, a pair of correction rubber wheel 712 and second drive part 713, response part 711 is used for responding tab position, second drive part 713 drives correction rubber wheel 712 and drives battery movement to adjust the position of tab. Correction rubber wheel 712 is provided with a pair, response part 711 responds to the position of the tab, the motor drives the rotation of the correction rubber wheel 712, the correction rubber wheel 712 drives the rotation of the battery, and the position correction of the battery is corrected by cooperating with the response of the response part 711 until the tab of the battery is positioned to the correct position.

[0044] According to some embodiments of the utility model, the welding mechanism 500 further includes a following part 540 and a positioning sleeve 550, the positive electrode welding needle 510 is arranged on the following part 540, the positioning sleeve 550 is arranged below the following part 540, the positioning sleeve 550 is connected with a nitrogen cooling part, and the positive electrode welding needle 510 passes through the positioning sleeve 550 and is arranged. The positive electrode welding needle 510 is arranged on the following part 540, the following part 540 can feed back the welding pressure in real time, improve the welding yield, effectively feed back the abnormal condition in the process of the welding needle descending, avoid the bending deformation of the welding needle due to the excessive force caused by the hole blocking, and improve the equipment operation efficiency. The positioning sleeve 550 is arranged below the following part 540, the positioning sleeve 550 is arranged in the whole machine, the positioning sleeve 550 is connected with the nitrogen cooling part, the positive electrode welding needle 510 passes through the positioning sleeve 550 and is arranged, the positive electrode welding needle 510 rises to the original position after welding, at this time, the head position of the positive electrode welding needle 510 corresponds to the position of the positioning sleeve 550, the positioning sleeve 550 is connected with the nitrogen cooling part, the temperature of the head of the positive electrode welding needle 510 is reduced in the mode of blowing cold nitrogen, the positive electrode welding needle 510 is continuously cooled, the welding needle is prevented from overheating, the welding effect is better, and the service life is longer.

[0045] According to some embodiments of the utility model, the utility model also includes a turnover detection mechanism 600, the turnover detection mechanism 600 includes a detection part and a first turnover clamping part 610, the first turnover clamping part 610 is used for clamping and overturning the battery after welding, and the detection part is used for detecting the height of the overturned battery. The turnover detection mechanism 600 is used for detecting the welding quality, the turnover detection mechanism 600 includes a detection part and a first turnover clamping part 610, the first turnover clamping part 610 has the functions of translation and rotation, specifically, the first turnover clamping part 610 is connected with a cam connecting rod part 220, the cam connecting rod drives the clamping jaw to move forward and clamp the battery on the jig, and then retreats to the original position, the turnover function is driven by the cam connecting rod part 220 to make the rack linearly move, drive the gear on the clamping jaw rotating shaft to realize the turnover function. After completing the turnover, the battery is put back to the jig, and the first turnover clamping part 610 returns to the original position. The detection part detects the height of the overturned battery, can judge whether the battery and the steel shell are separated and fall off due to poor welding through the height, thereby judging whether the welding between the battery and the steel shell is firm, and improving the product quality. It can be understood that in some other embodiments, the translation clamping and turnover of the first turnover clamping part 610 can be realized by a driving motor, and the turnover detection of the battery can also be completed. In some other embodiments, the turnover detection mechanism 600 further includes a second turnover clamping part 620, and the second turnover clamping part 620 is used for clamping and overturning the detected battery and resetting.

[0046] According to some embodiments of the utility model, still include feeding mechanism 730, feeding mechanism 730 includes feeding clamp jaw 731, feeding clamp jaw 731 is connected with cam connecting rod part 220, and cam connecting rod part 220 drives feeding clamp jaw 731 relative battery movement. Feeding clamp jaw 731 is used for clamping battery, and battery is taken and placed on conveying mechanism 100, and specifically, feeding clamp jaw 731 is connected with cam connecting rod part 220, and cam connecting rod part 220 drives feeding clamp jaw 731 relative battery movement, and the battery is grabbed. Feeding, positive pole welding needle 510 lifting, hole expanding component 310 lifting and the like are all driven by cam connecting rod part 220, and multiple cam connecting rod parts 220 are driven by the same driving main shaft 210, and the continuity of the whole machine action is high, and the cooperation degree is good, thereby the stability of equipment is improved, and the equipment abnormal maintenance downtime is reduced.

[0047] According to some embodiments of the utility model, still include discharging mechanism 740, and discharging mechanism 740 includes discharging clamp jaw 741, and discharging clamp jaw 741 is connected with cam connecting rod part 220, and cam connecting rod part 220 drives discharging clamp jaw 741 relative battery movement. Discharging clamp jaw 741 is used for clamping battery, and battery is taken away from conveying mechanism 100, and specifically, discharging clamp jaw 741 is connected with cam connecting rod part 220, and cam connecting rod part 220 drives discharging clamp jaw 741 relative battery movement, and the battery is grabbed. Discharging, positive pole welding needle 510 lifting, hole expanding component 310 lifting and the like are all driven by cam connecting rod part 220, and multiple cam connecting rod parts 220 are driven by the same driving main shaft 210, and the continuity of the whole machine action is high, and the cooperation degree is good, thereby the stability of equipment is improved, and the equipment abnormal maintenance downtime is reduced.

[0048] According to some embodiments of the utility model, still include secondary positioning mechanism 750, and secondary positioning mechanism 750 includes positioning block 751, and positioning block 751 is connected with cam connecting rod part 220, and cam connecting rod part 220 drives positioning block 751 relative battery movement. Secondary positioning mechanism 750 is used for positioning battery, improves the positioning accuracy of battery, and is convenient for subsequent hole expansion, detection and welding of battery cell. Specifically, secondary positioning mechanism 750 includes positioning block 751, and positioning block 751 is provided with V-shaped groove, and positioning block 751 is connected with cam connecting rod part 220, and cam connecting rod part 220 drives positioning block 751 movement, and the V-shaped groove of positioning block 751 is positioned to battery. It can be understood that, in some embodiments, follow-up bearing is also arranged on positioning block 751, and follow-up bearing is arranged on both sides of V-shaped groove, and follow-up bearing can drive battery rotation, and rotation positioning of battery is completed when secondary positioning.

[0049] The production line of the embodiment of the utility model, including battery bottom welding equipment above-mentioned embodiment, through use multiple cam connecting rod component 220 to drive reaming component 310 and negative electrode welding needle 520 movement, reaming component 310 and negative electrode welding needle 520 use same power source, action relation stable association, will not cause action confusion because of speed regulation, thereby promoted the stability of equipment operation. Heating component 320 is used to heat reaming component 310, cam connecting rod component 220 drives reaming component 310 movement, the ironing of center hole is carried out after the heating of reaming component 310, can make center hole open and heat plastic type, the insertion of welding needle is convenient. Center hole detection mechanism 400 detects center hole before welding, determines whether the center hole of battery meets the requirement of welding needle insertion, avoids the deformation of welding needle caused by center hole block hole. Welding mechanism 500 includes positive electrode welding needle 510, negative electrode welding needle 520 and first drive component 530, first drive component 530 drives positive electrode welding needle 510 movement, cam connecting rod component 220 drives negative electrode welding needle 520 movement, can complete the welding of bottom of battery and steel shell, guarantees the welding effect.

[0050] The above-mentioned embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A battery bottom welding apparatus, characterized by, The battery welding device comprises: a conveying mechanism for conveying the battery; a driving mechanism comprising a driving spindle and a plurality of cam link components, the driving spindle driving the plurality of cam link components to move; a thermal reaming mechanism comprising a heating component for heating a reaming component, the reaming component being connected with the cam link component, the cam link component driving the reaming component to move so as to insert the reaming component into the center hole of the battery; a center hole detecting mechanism for detecting the center hole of the battery; a welding mechanism comprising a positive electrode welding needle, a negative electrode welding needle and a first driving component, the first driving component driving the positive electrode welding needle to move, the cam link component driving the negative electrode welding needle to move so as to weld the battery cell.

2. The battery bottom bonding apparatus according to claim 1, characterized by, The thermal reaming mechanism is provided with a position sensor for sensing the depth of the reaming component inserted into the center hole.

3. The battery bottom bonding apparatus according to claim 1, characterized by, Further comprising a tab rectification mechanism comprising a sensing component for sensing the position of the tab, a pair of rectification rubber wheels and a second driving component, the second driving component driving the rectification rubber wheels to move the battery so as to adjust the position of the tab.

4. The battery bottom bonding apparatus according to claim 1, characterized by Further comprising a tab outer avoiding mechanism comprising a push block connected with the cam link component, the cam link component driving the push block to push the tab so as to avoid the positive electrode welding needle.

5. The battery underbom equipment of claim 1, wherein, The welding mechanism further comprises a following component and a positioning sleeve, the positive electrode welding needle being arranged on the following component, the positioning sleeve being arranged below the following component, the positioning sleeve being connected with a nitrogen cooling component, the positive electrode welding needle penetrating through the positioning sleeve.

6. The battery underbom equipment of claim 1, wherein, Further comprising a turnover detecting mechanism comprising a detecting component and a first turnover clamping component, the first turnover clamping component being used for clamping and turning over the welded battery, the detecting component being used for detecting the height of the turned over battery.

7. The battery underbreader as defined in claim 1, wherein Further comprising a feeding mechanism comprising a feeding clamp jaw, the feeding clamp jaw being connected with the cam link component, the cam link component driving the feeding clamp jaw to move relative to the battery.

8. The battery welding apparatus of claim 1, wherein, Further comprising a discharging mechanism comprising a discharging clamp jaw, the discharging clamp jaw being connected with the cam link component, the cam link component driving the discharging clamp jaw to move relative to the battery.

9. The battery underbreader as set forth in claim 1, wherein Further comprising a secondary positioning mechanism comprising a positioning block, the positioning block being connected with the cam link component, the cam link component driving the positioning block to move relative to the battery.

10. A production line, characterised in that The battery welding device comprises any one of claims 1 to 9. The battery welding device comprises any one of claims 1 to 9.

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