Screening equipment for measuring short circuit by pressing core and production line

Abstract

The utility model provides a core-pressing short-circuit-measuring screening device and a production line, the core-pressing short-circuit-measuring screening device comprises a support platform; the shaping and short circuit detection mechanism comprises a first pressing block, a first driving unit for driving the first pressing block to move relative to the supporting platform in the height direction of the core pressing and short circuit detection screening equipment, an electrode assembly mounted on the first pressing block and a short circuit detection unit electrically connected with the electrode assembly; the supporting mechanism comprises a supporting plate located below the electrode assembly and a second driving unit for driving the supporting plate to move relative to the electrode assembly in the height direction; the secondary shaping mechanism comprises a second pressing block and a third driving unit for driving the second pressing block to move relative to the supporting platform in the height direction; and the transferring mechanism can synchronously carry out feeding and discharging on the shaping short circuit measuring mechanism and the secondary shaping mechanism. The production line is provided with the cell pressing and short circuit testing screening equipment, and the cell pressing and short circuit testing screening equipment is beneficial to shortening the cell production period and improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field, concretely, it relates to a kind of short-circuit screening equipment of pressing core measurement and production line with the short-circuit screening equipment of pressing core measurement. BACKGROUND

[0002] After winding forming, the core needs to be shaped, short-circuit test and other processes, since the time required for core shaping is usually longer than the short-circuit detection time of the core, so the current conventional processing method is: first, the wound and formed core is transferred to the shaping device for shaping, and then the shaped core is transferred to the core short-circuit detection device for short-circuit detection. As can be seen, due to the inconsistency of shaping time and short-circuit detection time, the shaping and short-circuit detection of the core need to be carried out separately, thus leading to the lengthening of the entire production cycle of the core. SUMMARY

[0003] In order to solve the above problems, the main purpose of the utility model is to provide a kind of short-circuit screening equipment of pressing core measurement, which helps to shorten the production cycle of the core and improve the production efficiency.

[0004] Another purpose of the utility model is to provide a production line with the short-circuit screening equipment of pressing core measurement.

[0005] In order to achieve the main purpose of the utility model, the utility model provides a kind of short-circuit screening equipment of pressing core measurement, which includes a support platform, a shaping and short-circuit detection mechanism, a support mechanism, a secondary shaping mechanism and a transfer mechanism. The shaping and short-circuit detection mechanism includes a first pressing block, a first drive unit, an electrode assembly and a short-circuit detection unit. The first drive unit can drive the first pressing block to move in the height direction of the short-circuit screening equipment of pressing core measurement relative to the support platform. The electrode assembly is installed on the first pressing block and electrically connected with the short-circuit detection unit. The support mechanism includes a support plate and a second drive unit. The support plate is located below the electrode assembly. The second drive unit can drive the support plate to move in the height direction relative to the electrode assembly. The secondary shaping mechanism includes a second pressing block and a third drive unit. The third drive unit can drive the second pressing block to move in the height direction relative to the support platform. The shaping and short-circuit detection mechanism and the secondary shaping mechanism are distributed in the feeding direction of the transfer mechanism. The transfer mechanism can simultaneously feed the shaping and short-circuit detection mechanism and the secondary shaping mechanism. The transfer mechanism can also simultaneously discharge the shaping and short-circuit detection mechanism and the secondary shaping mechanism.

[0006] As can be seen from the above, the shaping and short-circuit testing mechanism can simultaneously perform short-circuit testing on the battery cell while shaping the battery cell, and since the battery cell shaping time is longer than the battery cell short-circuit testing time, the secondary shaping mechanism is arranged to enable another battery cell to be shaped simultaneously while the shaping and short-circuit testing mechanism is shaping and testing one battery cell, so that the same battery cell can meet the shaping requirements after being shaped by the shaping and short-circuit testing mechanism and the secondary shaping mechanism. In addition, the transfer mechanism can realize synchronous feeding and discharging of the shaping and short-circuit testing mechanism and the secondary shaping mechanism, so as to shorten the time of mutual waiting between mechanisms. Under the cooperation of the shaping and short-circuit testing mechanism, the support mechanism, the secondary shaping mechanism and the transfer mechanism, the production cycle of the battery cell is effectively shortened, and the production efficiency is improved.

[0007] One preferred scheme is that, along the feeding direction, the secondary shaping mechanism is located at the downstream end of the shaping and short-circuit testing mechanism; the secondary shaping mechanism further comprises a discharging assembly, the discharging assembly is installed on the second pressing block, and the support plate is further located below the discharging assembly; the support plate is provided with an insulating pad, and the insulating pad is located directly below the electrode assembly.

[0008] As can be seen from the above, the battery cell needs to be charged during the short-circuit testing process, and the battery cell needs to be discharged after the short-circuit testing for the safety of subsequent production of the battery cell. Through the relative position design of the secondary shaping mechanism and the shaping and short-circuit testing mechanism, and by arranging the discharging assembly on the secondary shaping mechanism, the battery cell can be discharged simultaneously while being shaped, so as to further shorten the production cycle of the battery cell.

[0009] Another preferred scheme is that the battery cell shaping and short-circuit testing screening device further comprises a positioning mechanism, the support platform is located between the support mechanism and the positioning mechanism in the width direction of the support platform, and the width direction is perpendicular to the feeding direction; the positioning mechanism comprises a push block and a fourth driving unit, and the fourth driving unit can drive the push block to move towards the support mechanism.

[0010] As can be seen from the above, the battery cell can be ensured to accurately locate the tab on the battery cell at the electrode assembly and the discharging assembly under the action of the positioning mechanism, so as to ensure the reliability of the short-circuit testing and discharging process of the battery cell.

[0011] Another preferred scheme is that the battery cell shaping and short-circuit testing screening device has a material taking station, a material discarding station and a material discharging station, along the feeding direction, the material taking station is located at the downstream end of the secondary shaping mechanism, and the transfer mechanism can further feed the material taking station; the battery cell shaping and short-circuit testing screening device further comprises a discharging mechanism, the discharging mechanism comprises a grabbing end and a fifth driving unit, and the fifth driving unit can drive the grabbing end to move between the material taking station, the material discarding station and the material discharging station.

[0012] From the above, the blanking mechanism can move the battery cell after shaping, short circuit detection and discharge treatment to the specified position, so as to avoid manual sorting, improve the automation degree of battery cell production, and improve the sorting accuracy.

[0013] Further, the grabbing end comprises a suction cup, and the scrap material station is provided with a material receiving disc; the fifth driving unit comprises a first driving module and a second driving module, the first driving module drives the grabbing end to move in the height direction, and the second driving module drives the first driving module to move in the first direction, which is perpendicular to the height direction.

[0014] From the above, the grabbing end can avoid damaging the battery cell when grabbing the battery cell through the negative pressure generated by the suction cup; the material receiving disc can collect the battery cell that fails the short circuit detection, avoiding the discarded battery cell from scattering on the ground; and through the structural design of the fifth driving unit, the grabbing end can ensure that the battery cell is not damaged when grabbing the battery cell, and at the same time, the blanking mechanism can adapt to different models of battery cells, expand the application range of the battery cell pressing and short circuit detection screening equipment, and improve the practicability of the battery cell pressing and short circuit detection screening equipment.

[0015] Another preferred scheme is that the battery cell pressing and short circuit detection screening equipment has a material receiving station, and in the feeding direction, the material receiving station is located at the upstream end of the shaping and short circuit detection mechanism, and the transfer mechanism can also blank the material receiving station; the battery cell pressing and short circuit detection screening equipment further comprises a material receiving mechanism, the material receiving mechanism comprises a material receiving end and a sixth driving unit, and the sixth driving unit can drive the material receiving end to move towards the material receiving station.

[0016] From the above, the material receiving unit can be used in cooperation with the battery cell winding equipment to directly receive the battery cell wound by the battery cell winding equipment on the battery cell pressing and short circuit detection screening equipment for shaping, short circuit testing and other processing, thereby reducing the required turnaround time of the battery cell and further shortening the production cycle of the battery cell and improving the production efficiency.

[0017] Further, the material receiving end comprises a first mounting seat, a carrier plate, a pressing plate, a third driving module, a first limiting block and a second limiting block, the first mounting seat is connected with the driving end of the sixth driving unit, the carrier plate and the third driving module are both mounted on the first mounting seat, the carrier plate is located below the pressing plate, the top surface of the carrier plate is flush with the top surface of the supporting platform, the third driving module can drive the pressing plate to move in the height direction relative to the carrier plate, the first limiting block and the second limiting block are both mounted on the first mounting seat, the first limiting block and the second limiting block have a clearance space therebetween, the second limiting block is located above the first limiting block, the carrier plate is located at the first limiting block, and the top of the first limiting block is higher than the top of the carrier plate.

[0018] From the above, the carrier plate is used to support the battery cell wound by the battery cell winding device, the first limiting block cooperates with the second limiting block to limit the battery cell, and then the needle of the battery cell winding device is extracted to take the battery cell off the needle, while avoiding the deformation of the battery cell along the axial direction of the needle during the process. The pressing plate is driven by the third driving module, cooperates with the carrier plate to clamp the battery cell, and appropriately clamps the battery cell to avoid the battery cell from falling during the process of being transferred to the receiving station. At the same time, the pressing plate cooperates with the carrier plate to realize the pre-pressing and shaping of the battery cell.

[0019] Another preferred scheme is that the transfer mechanism includes a second mounting seat, a third mounting seat, a fourth driving module, a fifth driving module, a sixth driving module, a first clamping assembly and a second clamping assembly. The fourth driving module drives the second mounting seat to move in the width direction of the support platform. The fifth driving module is installed on the second mounting seat. The fifth driving module drives the third mounting seat to move in the feeding direction. The first clamping assembly includes a plurality of first clamping rods. The second clamping assembly includes a plurality of second clamping rods. The plurality of first clamping rods and the plurality of second clamping rods are distributed in the feeding direction. The plurality of first clamping rods and the plurality of second clamping rods correspond one-to-one. The sixth driving module can drive the first clamping assembly and the second clamping assembly to move relatively in the feeding direction, so that the first clamping rod and the corresponding second clamping rod form a clamping position, and the width direction is perpendicular to the feeding direction. The first clamping rod is provided with a first inclined surface on one side facing the corresponding second clamping rod. The second clamping rod is provided with a second inclined surface on one side facing the corresponding second clamping rod. The top of the first inclined surface and the top of the second inclined surface have a first distance. The top of the first inclined surface and the bottom of the second inclined surface have a second distance. The first distance is greater than the second distance.

[0020] From the above, through the design of the transfer mechanism, the transfer mechanism can simultaneously feed and discharge multiple related workstations to save the waiting time between each mechanism, improve the production efficiency of the battery cell short circuit screening device, and also enable the transfer mechanism to feed and discharge battery cells of different models, thereby expanding the application range of the battery cell short circuit screening device and improving the practicality of the battery cell short circuit screening device.

[0021] Further, the electrode assembly includes the first electrode, the second electrode, the guide rod, the first bolt and the second bolt, the first electrode and the second electrode are electrically connected with the short circuit detection unit, the guide rod extends along the feeding direction and is installed on the first pressing block, the first electrode and the second electrode are slidably installed on the guide rod, the first bolt is connected between the first pressing block and the first electrode, the first bolt can adjust the first electrode to slide along the guide rod, the second bolt is connected between the first pressing block and the second electrode, and the second bolt can adjust the second electrode to slide along the guide rod; the short circuit screening equipment for the pressure core further includes two or more shaping mechanisms, the two or more shaping mechanisms are distributed along the feeding direction, the shaping mechanism includes the third pressing block and the seventh driving unit, the seventh driving unit can drive the third pressing block to move in the height direction relative to the support platform, the first pressing block, the second pressing block and the third pressing block are all provided with the heating element, the first pressure sensor is arranged between the first pressing block and the first driving unit, the second pressure sensor is arranged between the second pressing block and the second driving unit, and the third pressure sensor is arranged between the third pressing block and the seventh driving unit.

[0022] As can be seen from the above, the position of the first electrode can be adjusted by the first bolt, and the position of the second electrode can be adjusted by the second bolt, so that the electrode assembly can adapt to the tabs of different intervals, and then adapt to the electric cores of different models, so that the application range of the short circuit screening equipment for the pressure core is wide, and the practicality is high; in addition, the shaping mechanism can be set according to the shaping time of the electric core, and the number thereof can be set according to the shaping time of the electric core, so as to improve the production efficiency while ensuring that the shaping of the electric core meets the requirements; and the setting of the pressure sensor can provide the user with the shaping pressure of the electric core.

[0023] In order to realize another purpose of the utility model, the utility model provides a production line, including the electric core winding equipment, wherein, still include above-mentioned short circuit screening equipment for the pressure core, short circuit screening equipment for the pressure core is docked with the electric core winding equipment and receives the electric core wound out by the electric core winding equipment.

[0024] As can be seen from the above, the short circuit screening equipment for the pressure core is directly docked with the electric core winding equipment, so that the electric core wound out by the electric core winding equipment is directly transferred to the short circuit screening equipment for the pressure core for shaping, short circuit detection and the like, thereby shortening the transfer time of the electric core production, and at the same time, the electric core is shaped, short circuit detection and the like through the short circuit screening equipment for the pressure core, which can further shorten the production cycle of the electric core and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure diagram of the embodiment of the short circuit screening equipment for the pressure core of the utility model.

[0026] Figure 2 It is the structure diagram of the first omitted part of the component of the embodiment of the short circuit screening equipment for the pressure core of the utility model.

[0027] Figure 3 This is a structural diagram of the second, omitted component of the embodiment of the pressure core short-circuit screening device of this utility model.

[0028] Figure 4 This is a structural diagram of the transfer mechanism of an embodiment of the pressure core short-circuit screening device of this utility model.

[0029] Figure 5 This is a structural diagram of the feeding mechanism of an embodiment of the pressure core short-circuit screening device of this utility model.

[0030] Figure 6 This is a structural diagram of the receiving mechanism of an embodiment of the pressure core short-circuit screening device of this utility model.

[0031] Figure 7 This is a schematic diagram illustrating the connection between the core short-circuit testing and screening equipment and the cell winding equipment in an embodiment of the present invention.

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0033] Example of a short-circuit screening device with a core pressure sensor

[0034] Reference Figure 1 and Figure 2 The core pressing and short-circuit testing screening equipment 100 includes a frame 1 and a shaping and short-circuit testing mechanism 2, a support mechanism 3, a secondary shaping mechanism 4, a transfer mechanism 5, a positioning mechanism 6, a feeding mechanism 7, and a receiving mechanism 8 mounted on the frame 1. Along the feeding direction X of the transfer mechanism 5, the core pressing and short-circuit testing screening equipment 100 sequentially includes a receiving station 101, a shaping and short-circuit testing station 102, a shaping and discharge station 103, a picking station 104, a discarding station 105, and a feeding station 106. Furthermore, the frame 1 includes a support platform 11 for supporting the battery cells. The support platform 11 extends along the feeding direction X and spans the shaping and short-circuit testing station 102, the shaping and discharge station 103, and the picking station 104.

[0035] Combination Figure 3The shaping and short-circuit testing mechanism 2 is located at the shaping and short-circuit testing station 102, and is used to shape and short-circuit test the battery cells. The shaping and short-circuit testing mechanism 2 includes a first pressure block 21, a first drive unit 22, an electrode assembly 23, and a short-circuit testing unit; the first drive unit 22 is mounted on the frame 1, and the first drive unit 22 is preferably a cylinder; the first pressure block 21 is connected to the drive end (such as a piston rod) of the first drive unit 22, so that the first drive unit 22 can drive the first pressure block 21 to move relative to the support platform 11 in the height direction Z of the battery cell short-circuit testing and screening equipment 100, so as to cooperate with the support platform 11 to shape the battery cells located at the shaping and short-circuit testing station 102; the electrode assembly 23 is mounted on the first pressure block 21, so that the electrode assembly 23 can follow the first pressure block 21 to move towards the battery cell until it contacts the tab on the battery cell; the short-circuit testing unit is electrically connected to the electrode assembly 23, so that the short-circuit testing unit can perform short-circuit testing on the battery cell through the electrode assembly 23. The height direction Z is perpendicular to the feeding direction X.

[0036] In some embodiments, the core pressing short-circuit screening device 100 is equipped with an independent first control system to control each mechanism of the core pressing short-circuit screening device 100 individually. Alternatively, in other embodiments, the core pressing short-circuit screening device 100 may not have an independent first control system; instead, the mechanisms of the core pressing short-circuit screening device 100 are controlled by a second control system of the production line, thereby enabling linkage between other equipment on the production line (such as the cell winding equipment 200) and the core pressing short-circuit screening device 100. Yet another option is that the core pressing short-circuit screening device 100 is equipped with a first control system, and this first control system is electrically connected to the second control system of the production line to enable linkage between other equipment on the production line (such as the cell winding equipment 200) and the core pressing short-circuit screening device 100.

[0037] Both the first drive unit 22 and the short-circuit detection unit are electrically connected to the control system (which refers to the first control system or the second control system mentioned above, and the description of the control system below is the same as this). The short-circuit detection result of the battery cell by the short-circuit detection unit will be synchronously fed back to the control system so that the control system can control other mechanisms (such as the feeding mechanism 7) to perform related actions, as described below.

[0038] In some embodiments, the electrode assembly 23 includes a first electrode 231, a second electrode 232, a guide rod 233, a first bolt 234, and a second bolt 235. Both the first electrode 231 and the second electrode 232 are electrically connected to the short-circuit detection unit. One of the first electrode 231 and the second electrode 232 is used to be electrically connected to the positive electrode tab of the battery cell, and the other is used to be electrically connected to the negative electrode tab of the battery cell, thereby forming a short-circuit detection circuit for the battery cell in conjunction with the short-circuit detection unit. The guide rod 233 is parallel to the feeding direction X and is mounted on the first pressure block 21. The first electrode 231 and the second electrode 232 are both slidably connected to the guide rod 233, making the positions of the first electrode 231 and the second electrode 232 adjustable, thereby adjusting the relative distance between them. This design allows the electrode assembly 23 to be adapted to positive and negative electrode tabs with different spacings, enabling it to be compatible with different types of battery cells, thus expanding the applicability of the battery cell short-circuit testing and screening device 100 and improving its practicality. The first bolt 234 is parallel to the feeding direction X and is connected between the first pressure block 21 and the first electrode 231, with the first bolt 234 threadedly connected to the first electrode 231. The first bolt 234 is used to control the sliding of the first electrode 231 relative to the guide rod 233, thereby adjusting the position of the first electrode 231. The second bolt 235 is parallel to the feeding direction X. The second bolt 235 is connected between the first pressure block 21 and the second electrode 232, and the second bolt 235 is threadedly connected to the second electrode 232. The second bolt 235 is used to control the sliding of the second electrode 232 relative to the guide rod 233, thereby adjusting the position of the second electrode 232.

[0039] The support mechanism 3 includes a support plate 31 and a second drive unit 32. The second drive unit 32 is mounted on the frame 1 and electrically connected to the control system. The second drive unit 32 is preferably a cylinder. The support plate 31 is located below the electrode assembly 23 and is connected to the drive end (e.g., a piston rod) of the second drive unit 32, allowing the second drive unit 32 to drive the support plate 31 to move relative to the electrode assembly 23 in the height direction Z. The support plate 31 supports the tabs of the battery cell and ensures stable contact between the electrode assembly 23 and the tabs of the battery cell.

[0040] In some embodiments, when the support plate 31 is made of metal, an insulating pad 311 is provided on the support plate 31, and the insulating pad 311 is located directly below the electrode assembly 23. When the support mechanism 3 cooperates with the shaping and short-circuit testing mechanism 2 to shape and short-circuit test the battery cell, the battery cell's tabs are pressed against the insulating pad 311 by the electrode assembly 23. The insulating pad 311 can prevent the positive and negative tabs of the battery cell from being short-circuited through the support plate 31, thereby ensuring the accuracy of the battery cell's short-circuit detection.

[0041] In this embodiment, the secondary shaping mechanism 4 is located at the shaping and discharging station 103. The secondary shaping mechanism 4 includes a second pressing block 41, a third driving unit 42, and a discharging assembly 43. The third driving unit 42 is mounted on the frame 1 and electrically connected to the control system. Preferably, the third driving unit 42 is a cylinder. The second pressing block 41 is connected to the driving end (such as a piston rod) of the third driving unit 42, so that the third driving unit 42 can drive the second pressing block 41 to move relative to the support platform 11 in the height direction Z, thereby cooperating with the support platform 11 to perform secondary shaping on the battery cell located at the shaping and discharging station 103. The discharging assembly 43 is mounted on the second pressing block 41, so that the discharging assembly 43 can follow the second pressing block 41 to move relative to the electrode of the battery cell until it is electrically connected to the electrode of the battery cell. The support plate 31 extends below the discharging assembly 43 in the feeding direction X to support the electrode of the battery cell during the discharging process, ensuring the reliability of the battery cell discharge. It should be noted that the discharge component 43 preferably uses the resistance discharge method or the electronic load discharge method to discharge the battery cell; of course, if the discharge requirements are met, the short-circuit discharge method can also be used to discharge the battery cell; the preferred discharge method for the battery cell is the prior art, so it will not be described in detail here.

[0042] By designing the shaping and short-circuit testing mechanism 2 and the secondary shaping mechanism 4, the shaping and short-circuit testing mechanism 2 can simultaneously perform short-circuit testing on the battery cell while shaping it. Since the battery cell shaping time is longer than the short-circuit testing time, the secondary shaping mechanism 4 is set up so that while the shaping and short-circuit testing mechanism 2 is shaping and short-circuit testing one battery cell, the secondary shaping mechanism 4 can simultaneously shape another battery cell. This ensures that the same battery cell meets the shaping requirements after being shaped by the shaping and short-circuit testing mechanism 2 and the secondary shaping mechanism 4. In addition, splitting the battery cell shaping process into two steps allows for a suitable extension of the short-circuit testing time while meeting the shaping requirements, thereby improving the accuracy of short-circuit testing. Furthermore, performing shaping and short-circuit testing on the same equipment (i.e., this battery cell short-circuit testing and screening equipment 100) can effectively shorten the battery cell turnaround time in the production process, thereby improving production efficiency and shortening the production cycle.

[0043] In addition, since the battery cell needs to be charged during the short-circuit detection process, it is necessary to discharge the battery cell after the short-circuit detection is completed for the safety of subsequent battery cell production. By designing the relative positions of the secondary shaping mechanism 4 and the shaping and short-circuit testing mechanism 2, and by setting the discharge component 43 on the secondary shaping mechanism 4, the battery cell can be discharged simultaneously during the secondary shaping process, thereby further shortening the battery cell production cycle.

[0044] It should be noted that in some embodiments, when the secondary shaping mechanism 4 is not equipped with the discharge component 43, the secondary shaping mechanism 4 can be located upstream of the shaping and short-circuit testing mechanism 2 in the feeding direction X, and the shaping discharge station 103 can be cancelled, and a shaping station can be set upstream of the shaping and short-circuit testing station 102 instead; of course, as another optional solution, the secondary shaping mechanism 4 can still be located at the shaping discharge station 103.

[0045] The transfer mechanism 5 can simultaneously load materials into the shaping and short-circuit testing mechanism 2, the secondary shaping mechanism 4, and the material handling station 104. Furthermore, the transfer mechanism 5 can simultaneously unload materials from the material handling station 101, the shaping and short-circuit testing mechanism 2, and the secondary shaping mechanism 4. Therefore, this design can shorten the waiting time between mechanisms, and the cooperation of the shaping and short-circuit testing mechanism 2, the support mechanism 3, and the secondary shaping mechanism 4 with the transfer mechanism 5 can effectively shorten the battery cell production cycle and improve production efficiency.

[0046] Combination Figure 4 The transfer mechanism 5 includes a second mounting base 51, a third mounting base 52, a fourth drive module 53, a fifth drive module 54, a first clamping assembly 55, a second clamping assembly 56, and a sixth drive module 57. The second mounting base 51 is slidably connected to the frame 1 in the width direction Y of the support platform 11. The fourth drive module 53 is mounted on the frame 1 and electrically connected to the control system. The fourth drive module 53 is preferably a cylinder. The second mounting base 51 is connected to the drive end (such as a piston rod) of the fourth drive module 53, allowing the fourth drive module 53 to drive the second mounting base 51 to move relative to the support platform 11 in the width direction Y. The width direction Y is perpendicular to both the feeding direction X and the height direction Z.

[0047] The third mounting base 52 is slidably connected to the second mounting base 51 in the feeding direction X. The fifth drive module 54 is mounted on the second mounting base 51 and electrically connected to the control system. The fifth drive module 54 is preferably a cylinder. The third mounting base 52 is connected to the drive end (such as a piston rod) of the fifth drive module 54, so that the fifth drive module 54 can drive the third mounting base 52 to move in the feeding direction X.

[0048] The first clamping component 55, the second clamping component 56, and the sixth drive module 57 are all mounted on the third mounting base 52, thereby enabling the first clamping component 55 and the second clamping component 56 to move relative to the support platform 11 in the width direction Y and the feeding direction X of the second mounting base 51, the third mounting base 52, the fourth drive module 53, and the fifth drive module 54, so as to simultaneously load materials onto the shaping and short-circuit testing mechanism 2, the secondary shaping mechanism 4, and the material handling station 104, or simultaneously unload materials from the material handling station 101, the shaping and short-circuit testing mechanism 2, and the secondary shaping mechanism 4.

[0049] The first clamping assembly 55 and the second clamping assembly 56 are both slidably connected to the third mounting base 52 in the feeding direction X. The sixth drive module 57 is electrically connected to the control system. The sixth drive module 57 is preferably a cylinder, which has a first piston rod and a second piston rod. The first piston rod and the second piston rod can move towards or away from each other in the feeding direction X. The first clamping assembly 55 includes multiple first clamping rods 551, which are parallel to the width direction Y. The second clamping assembly 56 includes multiple second clamping rods 561, which are parallel to the width direction Y. The multiple first clamping rods 551 and the multiple second clamping rods 561 are distributed alternately in the feeding direction X. In addition, the multiple first clamping rods 551 and the multiple second clamping rods 561 correspond one-to-one, so that a clamping position can be formed between the first clamping rod 551 and the corresponding second clamping rod 561. The first clamping assembly 55 is connected to the first piston rod, and the second clamping assembly 56 is connected to the second piston rod, so that the sixth drive module 57 can drive the first clamping rod 551 of the first clamping assembly 55 to move towards or away from the second clamping rod 561 on the second clamping assembly 56 corresponding to the first clamping rod 551. By designing the first clamping component 55 and the second clamping component 56, the first clamping component 55 and the second clamping component 56 can work together to simultaneously load the shaping and short-circuit testing mechanism 2, the secondary shaping mechanism 4 and the material handling station 104, or simultaneously unload the material handling station 101, the shaping and short-circuit testing mechanism 2 and the secondary shaping mechanism 4, thereby saving the waiting time between the mechanisms and improving the production efficiency of the core pressing and short-circuit testing screening equipment 100. In addition, under the drive of the sixth drive module 57, the distance between the first clamping rod 551 and the corresponding second clamping rod 561 is adjustable, so that the transfer mechanism 5 can load and unload different types of battery cells, thereby expanding the application range of the core pressing and short-circuit testing screening equipment 100 and improving the practicality of the core pressing and short-circuit testing screening equipment 100.

[0050] In some embodiments, the first clamping rod 551 has a first inclined surface 5511 on the side facing a corresponding second clamping rod 561, and the second clamping rod 561 has a second inclined surface 5611 on the side facing a corresponding first clamping rod 551. A first distance L1 is formed between the top of the first inclined surface 5511 and the top of the second inclined surface 5611, and a second distance L2 is formed between the bottom of the first inclined surface 5511 and the bottom of the second inclined surface 5611, where the first distance L1 is greater than the second distance L2. This design allows the battery cell to be appropriately lifted by the first inclined surface 5511 and the second inclined surface 5611 during the transfer process, thereby separating the battery cell from the surface of the support platform 11. This prevents friction between the battery cell and the support platform 11 during battery cell transfer, thus avoiding damage to the battery cell surface and protecting the battery cell.

[0051] In the width direction Y, the support platform 11 is located between the positioning mechanism 6 and the support mechanism 3. The positioning mechanism 6 includes a push block 61 and a fourth drive unit 62. The push block 61 extends along the feeding direction X and is preferably located at the shaping and short-circuit testing station 102 and the shaping and discharging station 103. The fourth drive unit 62 is mounted on the frame 1 and electrically connected to the control system. The fourth drive unit 62 is preferably a cylinder. The push block 61 is connected to the drive end (such as a piston rod) of the fourth drive unit 62, so that the fourth drive unit 62 can drive the push block 61 to move towards or away from the support mechanism 3 in the width direction Y. The positioning mechanism 6 pushes and positions the battery cell located on the support platform 11 through the push block 61 to ensure that the electrode assembly 23 can contact the battery cell's tab when the battery cell is being shaped and short-circuit tested, and also to ensure that the discharge assembly 43 can contact the battery cell's tab when the battery cell is being shaped and discharged; thereby ensuring the reliability of the short-circuit testing and discharge processing of the battery cell. Meanwhile, by adjusting the stroke of the pusher block 61 driven by the fourth drive unit 62, the short-circuit screening equipment 100 can be adapted to the production of different types of battery cells, so as to realize the shaping and short-circuit testing of battery cells of different sizes.

[0052] Combination Figure 5 The unloading mechanism 7 includes a gripping end 71 and a fifth drive unit 72. The fifth drive unit 72 is mounted on the frame 1 and electrically connected to the control system. The fifth drive unit 72 can drive the gripping end 71 to move between the picking station 104, the discarding station 105, and the unloading station 106. Therefore, the unloading mechanism 7 can move the battery cells, after shaping, short-circuit testing, and discharge treatment, to a designated location, thus eliminating the need for manual sorting, improving the automation level of battery cell production, and increasing sorting accuracy. For example, when the fifth drive unit 72 drives the gripping end 71 to pick up a battery cell at the picking station 104, based on the detection result of the short-circuit detection unit, if the short-circuit test of the battery cell fails, the fifth drive unit 72 drives the gripping end 71 to move to the discarding station 105 to discard the battery cell; if the short-circuit test of the battery cell passes, the fifth drive unit 72 drives the gripping end 71 to move to the unloading station 106 to release the battery cell, allowing it to enter the next stage of production.

[0053] In some embodiments, a receiving tray 1051 is provided at the waste disposal station 105 to recycle the discarded battery cells, thereby preventing the discarded battery cells from being scattered all over the ground.

[0054] In some embodiments, the gripping end 71 includes a suction cup 711, which can generate an adsorption force under the action of a negative pressure generating device. The negative pressure adsorption force generated at the suction cup 711 can grip the battery cell, thus avoiding damage to the battery cell when gripping it.

[0055] In some embodiments, the fifth drive unit 72 includes a first drive module 721 and a second drive module 722, both of which are electrically connected to the control system. The first drive module 721 preferably employs a linear slide, with the gripping end 71 connected to the drive end (e.g., a trolley) of the first drive module 721, enabling the first drive module 721 to drive the gripping end 71 to move in the height direction Z. The second drive module 722 is mounted on the frame 1, and preferably also employs a linear slide. The first drive module 721 is connected to the drive end (e.g., a trolley) of the second drive module 722, enabling the second drive module 722 to drive the first drive module 721 to move in a first direction (in this embodiment, the first direction is the feeding direction X), thereby moving the gripping end 71 to the material handling station 104. The first drive module 721 and the second drive module 722 adopt linear slides, which enable the gripping end 71 to move precisely to the material handling station 104 to grip the battery cell, while also preventing damage to the battery cell when gripping it. In addition, the design of the fifth drive unit 72 enables the unloading mechanism 7 to be adapted to different models of battery cells, expanding the application range of the core pressing and short-circuit testing screening equipment 100, thereby improving the practicality of the core pressing and short-circuit testing screening equipment 100.

[0056] Combination Figure 6 The receiving mechanism 8 includes a receiving end 81 and a sixth drive unit 82. The sixth drive unit 82 can be mounted on the frame 1 or on external equipment (such as the cell winding equipment 200). The sixth drive unit 82 is electrically connected to the control system. The sixth drive unit 82 is preferably a cylinder. The receiving end 81 is connected to the drive end (such as a piston rod) of the sixth drive unit 82, allowing the sixth drive unit 82 to drive the receiving end 81 to move to the receiving station 101. In this embodiment, the sixth drive unit 82 drives the receiving end 81 to move in the feeding direction X. The receiving mechanism 8 can cooperate and dock with the cell winding equipment 200 through the receiving end 81 to directly receive the cells wound by the cell winding equipment 200 onto the core pressing and short-circuit screening equipment 100 for shaping, short-circuit testing, and other processing, thereby reducing the required cell turnaround time, further shortening the cell production cycle, and improving production efficiency.

[0057] In some embodiments, the receiving end 81 includes a first mounting base 811, a carrier plate 812, a pressure plate 813, a third drive module 814, a first limiting block 815, and a second limiting block 816. The first mounting base 811 is connected to the drive end of the sixth drive unit 82. The carrier plate 812 and the third drive module 814 are both mounted on the first mounting base 811. The third drive module 814 is electrically connected to the control system. The carrier plate 812 is located below the pressure plate 813, and the top surface of the carrier plate 812 is preferably flush with the top surface of the support platform 11. The third drive module 814 is preferably a cylinder. The pressure plate 813 is connected to the drive end (such as a piston rod) of the third drive module 814, so that the third drive module 814 can drive the pressure plate 813 to move relative to the carrier plate 812 in the height direction Z. The first limiting block 815 and the second limiting block 816 are both mounted on the first mounting base 811. A clearance space exists between the first limiting block 815 and the second limiting block 816 to allow the winding needles of the battery cell winding equipment to pass through. Furthermore, the second limiting block 816 is located above the first limiting block 815, and the carrier plate 812 is located at the first limiting block 815, with the top of the first limiting block 815 higher than the top of the carrier plate 812. Figure 7 As shown, the sixth drive unit 82 can drive the receiving end 81 to move to the unloading station of the cell winding equipment 200. At this time, the cell wound by the cell winding equipment 200 passes between the carrier plate 812 and the pressure plate 813, so that the carrier plate 812 can receive and support the cell. Then, the winding needle at the unloading station of the cell winding equipment 200 retracts. The first limit block 815 and the second limit block 816 cooperate to limit the cell. At the same time, the pulling action of the winding needle removes the cell from the winding needle, preventing the cell from moving along the winding needle during the process. The axial deformation occurs; then, under the drive of the third drive module 814, the pressure plate 813, together with the carrier plate 812, appropriately clamps the battery cell and achieves pre-pressure shaping of the battery cell. Subsequently, under the drive of the sixth drive unit 82, the receiving end 81 sends the battery cell to the receiving station 101. When the receiving end 81 is located at the receiving station 101, the pressure plate 813 moves away from the carrier plate 812 under the drive of the third drive module 814 to release the clamping of the battery cell, so that the transfer mechanism 5 sends the battery cell to the shaping and short-circuit testing mechanism 2.

[0058] In some embodiments, the core pressing and short-circuit testing screening equipment further includes two or more shaping mechanisms distributed along the feeding direction. It is understood that the position of the shaping mechanisms is not particularly required. In the feeding direction X, all shaping mechanisms can be located downstream of the secondary shaping mechanism 4, or all shaping mechanisms can be located upstream of the shaping and short-circuit testing mechanism 2, or the shaping mechanisms can be interspersed with the shaping and short-circuit testing mechanism 2 and the secondary shaping mechanism 4 in the feeding direction. Each shaping mechanism includes a third pressing block and a seventh driving unit. The seventh driving unit is preferably a cylinder. The third pressing block is connected to the driving end (such as a piston rod) of the seventh driving unit, allowing the seventh driving unit to drive the third pressing block to move relative to the support platform 11 in the height direction. Therefore, the shaping mechanism can be set according to the shaping time of the battery cell, and its number can be set according to the shaping time of the battery cell to improve production efficiency while ensuring that the shaping of the battery cell meets the requirements.

[0059] In some embodiments, heating elements are provided in the first, second, and third pressing blocks to achieve hot pressing and shaping of the battery cell.

[0060] In some embodiments, a first pressure sensor 24 is provided between the first pressure block 21 and the driving end of the first driving unit 22, a second pressure sensor 44 is provided between the second pressure block 41 and the driving end of the second driving unit 42, and a third pressure sensor is provided between the third pressure block and the driving end of the seventh driving unit, so that the user can obtain the shaping pressure on the battery cell through each pressure sensor.

[0061] The following is a brief description of the working process of the pressure core short-circuit screening device 100:

[0062] After the receiving mechanism 8 receives the battery cells one by one from the battery cell winding equipment 200 to the receiving station 101, the transfer mechanism 5 transfers the battery cells one by one to the shaping and short-circuit testing mechanism 2 for shaping and short-circuit testing, and then transfers the battery cells one by one to the secondary shaping mechanism 4 for shaping and discharge processing, and finally transfers the battery cells one by one to the picking station 104. During this process, while the shaping and short-circuit testing mechanism 2 is shaping and short-circuit testing a battery cell, the secondary shaping mechanism 4 is simultaneously performing secondary shaping and discharge processing on the battery cell that has completed the shaping and short-circuit testing. After the battery cell is transferred to the shaping and short-circuit testing station 102 and the shaping and discharge station 103, the positioning mechanism 6 pushes the battery cell with the push block 61 to position the battery cell. While the shaping and short-circuit testing mechanism 2 is shaping and short-circuit testing the battery cell, and while the secondary shaping mechanism 4 is shaping and discharging the battery cell, the second drive unit 32 of the support mechanism 3 drives the support plate 31 to move upward to support the battery cell's tabs. After the battery cell is transferred to the shaping and short-circuit testing station 102 and the shaping and discharge station 103... The fourth drive module 53 of the transfer mechanism 5 drives the first clamping component 55 and the second clamping component 56 to exit above the support platform 11 to avoid interference between the first clamping component 55, the second clamping component 56 and the shaping and short-circuit testing mechanism 2 and the secondary shaping mechanism 4.

[0063] After the battery cell is transferred to the picking station 104, the unloading mechanism 7, based on the short-circuit test results, transfers the unqualified battery cells to the discard station 105 for disposal, and transfers the qualified battery cells to the unloading station 106 for unloading. In some embodiments, a conveyor belt can be set up at the unloading station 106 to transport the qualified battery cells to the next-level equipment for subsequent production. Of course, as another optional solution, equipment for further processing of the battery cells can also be set up at the unloading station 106, so that the unloading mechanism 7 can directly transfer the battery cells to the next-level equipment.

[0064] Production line example

[0065] The production line includes a cell winding machine 200 and a cell pressing and short-circuit testing and screening machine 100 as described in the above embodiment. The cell pressing and short-circuit testing and screening machine 100 connects to the cell winding machine 200 via a receiving mechanism 8 and receives the cells wound by the cell winding machine 200. The cell pressing and short-circuit testing and screening machine 100 directly connects to the cell winding machine 200, allowing the cells wound by the cell winding machine 200 to be directly transferred to the cell pressing and short-circuit testing and screening machine 100 for shaping, short-circuit testing, etc., thereby shortening the transfer time in cell production. Furthermore, by using the cell pressing and short-circuit testing and screening machine 100 to shape and test the cells, the cell production cycle can be further shortened, and production efficiency improved.

[0066] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A short-circuit screening device for pressure core, characterized in that, include: Support platform; A shaping and short-circuit testing mechanism includes a first pressure block, a first driving unit, an electrode assembly, and a short-circuit detection unit. The first driving unit can drive the first pressure block to move relative to the support platform in the height direction of the pressure core short-circuit screening device. The electrode assembly is mounted on the first pressure block and electrically connected to the short-circuit detection unit. A support mechanism, comprising a support plate and a second drive unit, wherein the support plate is located below the electrode assembly, and the second drive unit can drive the support plate to move relative to the electrode assembly in the height direction; A secondary shaping mechanism, comprising a second pressing block and a third driving unit, wherein the third driving unit can drive the second pressing block to move relative to the support platform in the height direction; The transfer mechanism includes a shaping and short-circuit testing mechanism and a secondary shaping mechanism distributed along the feeding direction of the transfer mechanism. The transfer mechanism can simultaneously feed the shaping and short-circuit testing mechanism and the secondary shaping mechanism, and can also simultaneously unload the shaping and short-circuit testing mechanism and the secondary shaping mechanism.

2. The short-circuit screening device for pressure core as described in claim 1, characterized in that: Along the feeding direction, the secondary shaping mechanism is located at the downstream end of the shaping and short-circuit testing mechanism; The secondary shaping mechanism also includes a discharge assembly, which is mounted on the second pressure block, and the support plate is located below the discharge assembly. An insulating pad is provided on the support plate, and the insulating pad is located directly below the electrode assembly.

3. The short-circuit screening device for pressure core as described in claim 1, characterized in that: The core pressing short-circuit screening device also includes a positioning mechanism. In the width direction of the support platform, the support platform is located between the support mechanism and the positioning mechanism, and the width direction is perpendicular to the feeding direction. The positioning mechanism includes a pusher block and a fourth drive unit, which can drive the pusher block to move toward the support mechanism.

4. The short-circuit screening device for pressure core as described in claim 1, characterized in that: The core pressing short-circuit screening equipment has a material picking station, a material discarding station and a material unloading station. Along the feeding direction, the material picking station is located at the downstream end of the secondary shaping mechanism, and the transfer mechanism can also feed material to the material picking station. The core pressing short-circuit screening equipment also includes a feeding mechanism, which includes a gripping end and a fifth driving unit. The fifth driving unit can drive the gripping end to move between the material picking station, the material discarding station and the feeding station.

5. The short-circuit screening device for pressure core as described in claim 4, characterized in that: The gripping end includes a suction cup, and the waste disposal station is equipped with a receiving tray; The fifth driving unit includes a first driving module and a second driving module. The first driving module drives the gripping end to move in the height direction, and the second driving module drives the first driving module to move in a first direction, which is perpendicular to the height direction.

6. The short-circuit screening device for pressure core as described in claim 1, characterized in that: The core pressing and short-circuit testing screening equipment has a receiving station. In the feeding direction, the receiving station is located upstream of the shaping and short-circuit testing mechanism. The transfer mechanism can also unload materials from the receiving station. The pressure core short-circuit screening device also includes a receiving mechanism, which includes a receiving end and a sixth driving unit. The sixth driving unit can drive the receiving end to move toward the receiving station.

7. The short-circuit screening device for pressure core as described in claim 6, characterized in that: The receiving end includes a first mounting base, a carrier plate, a pressure plate, a third drive module, a first limiting block, and a second limiting block. The first mounting base is connected to the drive end of the sixth drive unit. The carrier plate and the third drive module are both mounted on the first mounting base. The carrier plate is located below the pressure plate, and the top surface of the carrier plate is flush with the top surface of the support platform. The third drive module can drive the pressure plate to move relative to the carrier plate in the height direction. The first limiting block and the second limiting block are both mounted on the first mounting base, and there is a clearance space between the first limiting block and the second limiting block. The second limiting block is located above the first limiting block, and the carrier plate is located at the first limiting block. The top of the first limiting block is higher than the top of the carrier plate.

8. The short-circuit screening device for pressure core as described in claim 1, characterized in that: The transfer mechanism includes a second mounting base, a third mounting base, a fourth drive module, a fifth drive module, a sixth drive module, a first clamping assembly, and a second clamping assembly. The fourth drive module drives the second mounting base to move in the width direction of the support platform. The fifth drive module is mounted on the second mounting base and drives the third mounting base to move in the feeding direction. The first clamping assembly includes multiple first clamping rods, and the second clamping assembly includes multiple second clamping rods. The multiple first clamping rods and multiple second clamping rods are distributed alternately in the feeding direction, and the multiple first clamping rods and multiple second clamping rods correspond one-to-one. The sixth drive module can drive the first clamping assembly and the second clamping assembly to move relative to each other in the feeding direction, so that a clamping position is formed between the first clamping rod and a corresponding second clamping rod. The width direction is perpendicular to the feeding direction. The first clamping rod has a first inclined surface on one side facing a corresponding second clamping rod, and the second clamping rod has a second inclined surface on one side facing a corresponding second clamping rod. There is a first distance between the top of the first inclined surface and the top of the second inclined surface, and a second distance between the top of the first inclined surface and the bottom of the second inclined surface. The first distance is greater than the second distance.

9. The short-circuit screening device for pressure core testing according to any one of claims 1 to 8, characterized in that: The electrode assembly includes a first electrode, a second electrode, a guide rod, a first bolt, and a second bolt. Both the first and second electrodes are electrically connected to the short-circuit detection unit. The guide rod extends along the feeding direction and is mounted on the first pressure block. Both the first and second electrodes are slidably mounted on the guide rod. The first bolt connects the first pressure block and the first electrode, allowing the first electrode to slide along the guide rod. The second bolt connects the first pressure block and the second electrode, allowing the second electrode to slide along the guide rod; and / or The core-pressing short-circuit screening device further includes two or more shaping mechanisms distributed along the feeding direction. Each shaping mechanism includes a third pressing block and a seventh driving unit. The seventh driving unit can drive the third pressing block to move relative to the support platform in the height direction. Heating elements are provided inside the first pressing block, the second pressing block, and the third pressing block. A first pressure sensor is provided between the first pressure block and the first drive unit, a second pressure sensor is provided between the second pressure block and the second drive unit, and a third pressure sensor is provided between the third pressure block and the seventh drive unit.

10. A production line, including battery cell winding equipment, characterized in that, It also includes the core short-circuit screening device as described in any one of claims 1 to 9, wherein the core short-circuit screening device is connected to the cell winding device and receives the cells wound out by the cell winding device.

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