Lithium battery stacking equipment

Abstract

The utility model discloses lithium battery stacking equipment, and belongs to the technical field of lithium battery manufacturing. Comprising a rack and a mold carrier for placing a battery cell module, the lifting and positioning mechanism is arranged on the rack and is used for positioning the mold carrier; the extruding mechanism is arranged on the rack and is positioned at one end of the lifting positioning mechanism; the rear positioning mechanism is arranged on the rack and located at the end, away from the extrusion mechanism, of the lifting positioning mechanism. According to the utility model, the product quality is improved, and potential damage to the product caused by the fact that the pressure cannot be controlled during manual extrusion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery manufacturing technical field, concretely relates to a lithium battery stacking equipment. BACKGROUND

[0002] The existing stacking equipment places the battery cell on the turnover carrier by manual, and the battery cell is extruded into place by manual rotating screw rod, and then the upper and lower steel belts are well sleeved, and after finishing, the extruded battery cell is carried to the unpowered roller line by two staffs to carry out next operation, but since the extrusion is carried out manually, the product extrusion force cannot be controlled, and there is great quality risk, and the manual carrying carrier also has great safety hidden danger, and simultaneously, the extrusion screw rod height is fixed position, and the stress surface of the stacked battery cell of different heights cannot be guaranteed. SUMMARY

[0003] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0004] A lithium battery stacking equipment, comprising:

[0005] A rack and a mold carrier for placing a battery cell module;

[0006] A lifting positioning mechanism, which is arranged on the rack and is used for positioning the mold carrier;

[0007] An extrusion mechanism, which is arranged on the rack and is located at one end of the lifting positioning mechanism;

[0008] A rear positioning mechanism, which is arranged on the rack and is located at an end of the lifting positioning mechanism away from the extrusion mechanism;

[0009] Wherein, the lifting positioning mechanism, the extrusion mechanism and the rear positioning mechanism are sequentially arranged along the length direction of the rack, and the output end of the extrusion mechanism and the output end of the rear positioning mechanism are located on the same horizontal line;

[0010] A touch screen, which is arranged on the rack, and the touch screen is connected with the lifting positioning mechanism, the extrusion mechanism and the rear positioning mechanism respectively.

[0011] Further, the lifting positioning mechanism comprises a lifting assembly, a carrier positioning block and two guide assemblies;

[0012] The lifting assembly is arranged on the rack, the carrier positioning block is arranged on the lifting part of the lifting assembly, and the lifting assembly is used for driving the carrier positioning block to move up and down;

[0013] Two guide assemblies are oppositely arranged on both sides of the lifting assembly, and are used for placing the mold carrier above the carrier positioning block.

[0014] The extrusion mechanism is arranged on one side of the guide assembly away from the lifting assembly, and the rear positioning mechanism is arranged on the other side of the guide assembly away from the lifting assembly.

[0015] Further, the lifting assembly comprises a fixed platform, a lifting motor, a first lifting platform and a second lifting platform.

[0016] The fixed platform is installed on the rack through the telescopic rod, the first lifting platform and the second lifting platform are arranged at the two ends of the rack away from the fixed platform, and the carrier positioning block is arranged on the fixed platform.

[0017] The first lifting platform is provided with a first gear box and a first rack, the first end of the first rack is connected with the fixed platform through the rack, and the second end of the first rack passes through the first gear box; the first gear box is provided with a first gear, the first gear is engaged with the first rack, and the first gear is used to drive the fixed platform to move up and down.

[0018] The second lifting platform is provided with a second gear box and a second rack, the first end of the second rack is connected with the fixed platform through the rack, and the second end of the second rack passes through the second gear box; the second gear box is provided with a second gear, the second gear is engaged with the second rack, and the second gear is used to drive the fixed platform to move up and down; the second gear is fixedly connected with the first gear through a rotating shaft; the rotating shaft is used to ensure that the first gear and the second gear rotate at the same time.

[0019] The lifting motor is installed on the first lifting platform, the output end of the lifting motor passes through the first lifting platform and the first gear box and is connected with the first gear through a lifting speed reducer, so as to drive the first gear to rotate; the lifting motor is connected with the touch screen.

[0020] Further, the guide assembly comprises a guide wheel fixed block and a plurality of carrier guide wheels, the guide wheel fixed block is installed on the rack, and a plurality of carrier guide wheels are uniformly distributed on the top of the guide wheel fixed block along the length direction of the guide wheel fixed block.

[0021] Further, the rear positioning mechanism comprises a translation motor, a first screw rod, a rear positioning platform seat, a positioning platform, a first extrusion block and a protective cover.

[0022] The rear positioning platform seat is arranged on the rack, and the protective cover is installed on the rear positioning platform seat along the width direction of the rack.

[0023] The protective cover is provided with a slide parallel to the width direction of the rack, and the positioning platform is slidably arranged on the slide; the positioning platform is provided with a threaded hole matched with the first lead screw, and the first end of the first lead screw is rotatably connected to the first end of the slide through the threaded hole; the second end of the first lead screw is connected to the output end of the translation motor through the second end of the slide, and the translation motor is installed on the slide;

[0024] The side of the positioning platform close to the guide assembly is connected with the first extrusion block through a pressure sensor;

[0025] The translation motor and the pressure sensor are connected with the touch screen respectively.

[0026] Further, the extrusion mechanism is provided with an extrusion fixing seat, an extrusion electric cylinder and a second extrusion block;

[0027] The extrusion fixing seat is arranged on the rack, the extrusion electric cylinder is arranged on the extrusion fixing seat along the length direction of the rack, and the second extrusion block is arranged on the output end of the extrusion electric cylinder;

[0028] The extrusion electric cylinder is connected with the touch screen.

[0029] Further, the first light curtain group and the second light curtain group are arranged on the rack along the width direction of the rack and located on both sides of the lifting positioning mechanism; the first light curtain group and the second light curtain group are connected with the touch screen respectively; the first light curtain group and the second light curtain group are used for detecting whether there is foreign matter in the pressing process.

[0030] Further, the first light curtain group includes two first light curtains, and the two first light curtains are oppositely arranged at both ends of the lifting positioning mechanism;

[0031] The second light curtain group includes two second light curtains, and the two second light curtains are oppositely arranged at both ends of the lifting positioning mechanism.

[0032] Further, the top of the rack is further provided with an emergency stop button for emergency stop and two start buttons for starting, wherein the two start buttons are connected, and the emergency stop button and the two start buttons are connected with the touch screen.

[0033] Further, a display screen and a handheld code scanning gun for collecting information of two-dimensional codes / bar codes of each battery cell to be stacked are further included, the display screen is arranged on the rack and connected with the handheld code scanning gun, and is used for displaying the battery cell information scanned by the handheld code scanning gun each time.

[0034] Beneficial effects:

[0035] 1, improve product quality, without worrying about artificial in extrusion pressure can not be controlled, and the potential damage to the product.

[0036] 2, reduce the labor fatigue intensity of artificial in manual operation.

[0037] 3, each battery in use all artificial scan code, ensure that each group of battery information traceable that is accurate. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a kind of lithium battery stacking equipment structure schematic of the utility model Figure 1 ;

[0039] Figure 2 is a kind of lithium battery stacking equipment structure schematic of the utility model Figure 2 ;

[0040] Figure 3 is the structure diagram of the lifting positioning mechanism of the utility model;

[0041] Figure 4 is the structure diagram of the rear positioning mechanism of the utility model;

[0042] Figure 5 is the structure diagram of the extrusion mechanism of the utility model;

[0043] Wherein, 1, rack;2, rear positioning mechanism;201, translation motor;202, rear positioning platform seat;203, protective cover;204, positioning platform;205, pressure sensor;206, first extrusion block;3, lifting positioning mechanism;301, guide assembly;302, fixed platform;303, carrier positioning block;304, first lifting platform;305, second lifting platform;306, lifting speed reducer;307, lifting motor;4, mold carrier;5, battery module;6, extrusion mechanism;601, extrusion electric cylinder;602, second extrusion block;603, extrusion fixed seat;7, touch screen;8, first light curtain;9, second light curtain;10, display screen; DETAILED DESCRIPTION

[0044] Embodiment 1

[0045] Reference Figures 1-2 A kind of lithium battery stacking equipment, comprising:

[0046] rack 1 and the mold carrier 4 for placing battery module 5;

[0047] Lifting positioning mechanism 3, lifting positioning mechanism 3 is set on rack 1, for positioning mold carrier 4;

[0048] The extrusion mechanism 6 is arranged on the frame 1 and located at one end of the lifting positioning mechanism 3.

[0049] The rear positioning mechanism 2 is arranged on the frame 1 and located at the end of the lifting positioning mechanism 3 away from the extrusion mechanism 6.

[0050] The lifting positioning mechanism 3, the extrusion mechanism 6 and the rear positioning mechanism 2 are sequentially arranged along the length direction of the frame 1, and the output end of the extrusion mechanism 6 and the output end of the rear positioning mechanism 2 are located on the same horizontal line.

[0051] The touch screen 7 is arranged on the frame 1, and the touch screen 7 is connected with the lifting positioning mechanism 3, the extrusion mechanism 6 and the rear positioning mechanism 2 respectively.

[0052] Embodiment 2

[0053] Reference Figure 3 In order to ensure that each kind of battery cell is extruded at the center position, the embodiment is further arranged on the basis of the embodiment 1.

[0054] Preferably, the lifting positioning mechanism 3 comprises a lifting assembly, a carrier positioning block 303 and two guide assemblies 301.

[0055] The lifting assembly is arranged on the frame 1, the carrier positioning block 303 is arranged on the lifting part of the lifting assembly, and the lifting assembly is used to drive the carrier positioning block 303 to move up and down.

[0056] The two guide assemblies are oppositely arranged on both sides of the lifting assembly, and are used to send the mold carrier 4 to the upper side of the carrier positioning block 303.

[0057] The extrusion mechanism is arranged on the side of one of the guide assemblies 301 away from the lifting assembly, and the rear positioning mechanism is arranged on the side of the other guide assembly 301 away from the lifting assembly.

[0058] Preferably, the lifting assembly comprises a fixed platform 302, a lifting motor 307, a first lifting platform 304 and a second lifting platform 305.

[0059] The fixed platform 302 is installed on the frame through a telescopic rod, the first lifting platform 304 and the second lifting platform 305 are oppositely arranged at both ends of the side of the frame away from the fixed platform 302, and the carrier positioning block 303 is arranged on the fixed platform 302.

[0060] The first lifting platform 304 is provided with a first gear box and a first rack, the first end of the first rack passes through the frame and is connected with the fixed platform 302, and the second end of the first rack passes through the first gear box; a first gear is arranged in the first gear box, the first gear is engaged with the first rack, and the first gear is used to drive the fixed platform 302 to move up and down.

[0061] The second lifting platform 305 is provided with a second gear box and a second rack, a first end of the second rack is connected with the fixed platform 302 through the rack, and a second end of the second rack passes through the second gear box; a second gear is arranged in the second gear box, the second gear is engaged with the second rack, and the second gear is used to drive the fixed platform 302 to move up and down; the second gear is fixedly connected with the first gear through a rotating shaft; the rotating shaft is used to ensure that the first gear and the second gear rotate at the same time;

[0062] The lifting motor 307 is installed on the first lifting platform 304, an output end of the lifting motor 307 is connected with the first gear through the lifting speed reducer 306, the first lifting platform 304 and the first gear box, and is used to drive the first gear to rotate; the lifting motor 307 is connected with the touch screen 7.

[0063] Preferably, the guide assembly 301 comprises a guide wheel fixing block and a plurality of carrier guide wheels, the guide wheel fixing block is installed on the rack, and the plurality of carrier guide wheels are uniformly distributed on the top of the guide wheel fixing block along the length direction of the guide wheel fixing block.

[0064] In the embodiment, when work is needed, the mold carrier 4 is sent to the carrier positioning block 303 of the fixed platform 302 for positioning through the carrier guide wheels, the lifting motor 307 drives the fixed platform 302 to run, and stops after the production of different height battery cell modules 5 is sent to the corresponding extrusion height.

[0065] Embodiment 3

[0066] Reference Figures 4-5 In order to adapt to the production of different battery cell modules, the embodiment is further provided on the basis of the embodiment 1.

[0067] Preferably, the rear positioning mechanism 2 comprises a translation motor 201, a first lead screw, a rear positioning platform base 202, a positioning platform 204, a first extrusion block 206 and a protective cover 203.

[0068] The rear positioning platform base 202 is arranged on the rack, and the protective cover 203 is installed on the rear positioning platform base 202 along the width direction of the rack 1.

[0069] The protective cover 203 is provided with a slide way parallel to the width direction of the rack 1, and the positioning platform 204 is slidably arranged on the slide way; the positioning platform 204 is provided with a threaded hole matched with the first lead screw, a first end of the first lead screw is rotatably connected with a first end of the slide way through the threaded hole; a second end of the first lead screw is connected with an output end of the translation motor 201 through a second end of the slide way, and the translation motor 201 is installed on the slide way.

[0070] The side of the positioning platform 204 close to the guide assembly 301 is connected with the first extrusion block 206 through the pressure sensor 205.

[0071] The translation motor 201 and the pressure sensor 205 are connected to the touch screen 7.

[0072] In this embodiment, when extrusion work is needed, the translation motor 201 automatically transports the first extrusion block 206 to the set reference point to stop.

[0073] In this embodiment, the touch screen includes a PLC and an MES.

[0074] In this embodiment, the pressure sensor 205 can display the output pressure in real time. When the pressure reaches the set value, the final pressure is output to the PLC of the touch screen, which facilitates subsequent MES uploading. When the pressure maintaining time reaches the set value, the translation motor 201 returns to the original position and waits for the next action designation.

[0075] Preferably, the extrusion mechanism 6 is provided with an extrusion fixed seat 603, an extrusion electric cylinder 601, and a second extrusion block 602.

[0076] The extrusion fixed seat 603 is arranged on the rack 1, and the extrusion electric cylinder 601 is arranged on the extrusion fixed seat 603 along the length direction of the rack 1. The second extrusion block 602 is arranged on the output end of the extrusion electric cylinder 601.

[0077] The extrusion electric cylinder 601 is connected to the touch screen 7.

[0078] In this embodiment, the extrusion electric cylinder is driven by an extrusion motor to operate, so that the second extrusion block 602 performs the pressing work on the battery cell module 5 that needs to be extruded. The maximum output can reach 2T, and the output required for processing can be changed by changing the ratio of the speed reducer. After the pressure reaches the set value, the pressing is stopped. The pressure can be maintained according to the requirements of different battery cell modules 5, and the original position can be automatically returned after the pressure maintaining time.

[0079] Embodiment 4

[0080] In order to prevent danger during the re-pressing process, this embodiment is further provided on the basis of embodiment 3.

[0081] Preferably, the first light curtain group and the second light curtain group are arranged on the rack 1 along the width direction of the rack 1 and are located on both sides of the lifting positioning mechanism 3. The first light curtain group and the second light curtain group are respectively connected to the touch screen 7. The first light curtain group and the second light curtain group are used to detect whether there is foreign matter during the pressing process.

[0082] Preferably, the first light curtain group includes two first light curtains 8, and the two first light curtains 8 are oppositely arranged at both ends of the lifting positioning mechanism 3.

[0083] The second light curtain group includes two second light curtains 9, and the two second light curtains 9 are oppositely arranged at both ends of the lifting positioning mechanism 3.

[0084] Preferably, the top of the rack 1 is also provided with an emergency stop button for emergency stop and two start buttons for starting, wherein the two start buttons are connected, and the emergency stop button and the two start buttons are connected with the touch screen 7.

[0085] Preferably, it also includes a display screen 10 and a handheld code scanning gun for collecting the information of the two-dimensional code / bar code of each battery cell to be stacked, the display screen 10 is arranged on the rack 1 and connected with the handheld code scanning gun, and is used to display the battery cell information scanned by the handheld code scanning gun each time.

[0086] Working principle: first, the module carrier 4 required for production is placed in the lifting positioning mechanism 3, and then the corresponding formula is selected in the touch screen 7; after the formula is selected and all mechanisms are in place, the steel belt is positioned in the module carrier 4 by hand, and then the battery cells to be stacked are placed in the module carrier 4 one by one by hand; after the battery cells in the module carrier 4 are placed, the equipment is started (both hands press the start button at the same time), the extrusion mechanism 6 extrudes the product, and when the pressure sensor 205 reaches the set parameter, the electric cylinder stops extruding and remains stationary (the electric cylinder can be freely set according to the needs of the product); after extrusion is completed, the upper and lower steel belts are used to cover the extruded battery cells by hand, the pressure of the extrusion cylinder 601 is released, and at the same time all mechanisms return to the original position, the module carrier 4 loaded with the module is moved to the next work station through the carrier guide wheel for operation;

[0087] The device can stack corresponding battery cells according to different order requirements of the module, and can automatically adjust according to the product characteristics (battery cell height and the number of battery cells required by a single module) in the case of different battery cell heights and PCS numbers, and can adjust through the lifting assembly when the height is different, so as to achieve the size required by different modules, and can upload the extrusion data (module length and extrusion pressure) to the MES; the device is provided with a touch screen and a double-hand control start button / emergency stop switch, and is also provided with a first light curtain group and a second light curtain group, if the battery cells are stacked, in order to ensure personal safety, both hands need to press the start switch at the same time to start, and the light curtain detects foreign matter during the pressing process, and immediately stops pressing and remains stationary.

[0088] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application, so any slight modification, equivalent change and modification made according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A lithium battery stacking apparatus, characterized by, The utility model relates to a battery cell module extruding device, including: a rack and a mold carrier for placing the battery cell module; a lifting positioning mechanism arranged on the rack for positioning the mold carrier; a pressing mechanism arranged on the rack and located at one end of the lifting positioning mechanism; a rear positioning mechanism arranged on the rack and located at the end of the lifting positioning mechanism away from the pressing mechanism; wherein the lifting positioning mechanism, the pressing mechanism and the rear positioning mechanism are sequentially arranged along the length direction of the rack, and the output end of the pressing mechanism and the output end of the rear positioning mechanism are located on the same horizontal line; a touch screen arranged on the rack, which is connected with the lifting positioning mechanism, the pressing mechanism and the rear positioning mechanism respectively.

2. A lithium battery stacking apparatus as claimed in claim 1, wherein, The lifting positioning mechanism comprises a lifting assembly, a carrier positioning block and two guide assemblies; the lifting assembly is arranged on the rack, the carrier positioning block is arranged on the lifting part of the lifting assembly, and the lifting assembly is used to drive the carrier positioning block to move up and down; the two guide assemblies are oppositely arranged on the two sides of the lifting assembly and are used to send the mold carrier to the upper side of the carrier positioning block; the pressing mechanism is arranged on the side of one of the guide assemblies away from the lifting assembly, and the rear positioning mechanism is arranged on the side of the other guide assembly away from the lifting assembly.

3. A lithium battery stacking apparatus as claimed in claim 2, wherein, The lifting assembly comprises a fixed platform, a lifting motor, a first lifting platform and a second lifting platform; the fixed platform is installed on the rack through a telescopic rod, the first lifting platform and the second lifting platform are oppositely arranged at the two ends of the side of the rack away from the fixed platform, and the carrier positioning block is arranged on the fixed platform; the first lifting platform is provided with a first gear box and a first rack, the first end of the first rack penetrates through the rack and is connected with the fixed platform, and the second end of the first rack penetrates through the first gear box; a first gear is arranged in the first gear box, the first gear is engaged with the first rack, and the first gear is used to drive the fixed platform to move up and down; the second lifting platform is provided with a second gear box and a second rack, the first end of the second rack penetrates through the rack and is connected with the fixed platform, and the second end of the second rack penetrates through the second gear box; a second gear is arranged in the second gear box, the second gear is engaged with the second rack, and the second gear is used to drive the fixed platform to move up and down; the second gear is fixedly connected with the first gear through a rotating shaft; the rotating shaft is used to ensure that the first gear and the second gear rotate at the same time; the lifting motor is installed on the first lifting platform, the output end of the lifting motor penetrates through the first lifting platform and the first gear box and is connected with the first gear through a lifting speed reducer, and is used to drive the first gear to rotate; the lifting motor is connected with the touch screen.

4. A lithium battery stacking apparatus as claimed in claim 2, wherein, The guide assembly comprises a guide wheel fixed block and a plurality of carrier guide wheels, the guide wheel fixed block is installed on the rack, and the plurality of carrier guide wheels are uniformly distributed on the top of the guide wheel fixed block along the length direction of the guide wheel fixed block.

5. A lithium battery stacking apparatus as claimed in claim 2, wherein, The rear positioning mechanism comprises a translation motor, a first screw rod, a rear positioning platform base, a positioning platform, a first extrusion block and a protective cover. The rear positioning platform base is arranged on the rack, and the protective cover is arranged on the rear positioning platform base along the width direction of the rack. The protective cover is provided with a slide way parallel to the width direction of the rack, and the positioning platform is slidably arranged on the slide way; the positioning platform is provided with a threaded hole matched with the first screw rod, and the first end of the first screw rod is rotatably connected with the first end of the slide way through the threaded hole; the second end of the first screw rod is connected with the output end of the translation motor through the second end of the slide way, and the translation motor is arranged on the slide way. The side of the positioning platform close to the guide assembly is connected with the first extrusion block through a pressure sensor. The translation motor and the pressure sensor are connected with the touch screen respectively.

6. A lithium battery stacking apparatus as claimed in claim 2, wherein, The extrusion mechanism is provided with an extrusion fixed base, an extrusion electric cylinder and a second extrusion block. The extrusion fixed base is arranged on the rack, the extrusion electric cylinder is arranged on the extrusion fixed base along the length direction of the rack, and the second extrusion block is arranged on the output end of the extrusion electric cylinder. The extrusion electric cylinder is connected with the touch screen.

7. A lithium battery stacking apparatus as claimed in claim 1, wherein, A first light curtain group and a second light curtain group are further arranged on the rack along the width direction of the rack and located on both sides of the lifting positioning mechanism; the first light curtain group and the second light curtain group are connected with the touch screen respectively; the first light curtain group and the second light curtain group are used for detecting whether there is foreign matter in the pressing process.

8. A lithium battery stacking apparatus as claimed in claim 7, wherein, The first light curtain group comprises two first light curtains, and the two first light curtains are oppositely arranged at the two ends of the lifting positioning mechanism. The second light curtain group comprises two second light curtains, and the two second light curtains are oppositely arranged at the two ends of the lifting positioning mechanism.

9. A lithium battery stacking apparatus as claimed in claim 1, wherein, The top of the rack is further provided with an emergency stop button for emergency stop and two start buttons for start, the two start buttons are connected, and the emergency stop button and the two start buttons are connected with the touch screen.

10. A lithium battery stacking apparatus as claimed in claim 1, wherein, A display screen and a handheld code scanning gun for collecting information of a two-dimensional code / bar code of each battery cell to be stacked are further included, the display screen is arranged on the rack and connected with the handheld code scanning gun, and is used for displaying the battery cell information scanned by the handheld code scanning gun each time. The guide assembly comprises a guide wheel fixed block and a plurality of carrier guide wheels, the guide wheel fixed block is installed on the rack, and the plurality of carrier guide wheels are uniformly distributed on the top of the guide wheel fixed block along the length direction of the guide wheel fixed block. The rear positioning mechanism comprises a translation motor, a first screw rod, a rear positioning platform base, a positioning platform, a first extrusion block and a protective cover. The rear positioning platform base is arranged on the rack, and the protective cover is arranged on the rear positioning platform base along the width direction of the rack. The protective cover is provided with a slide way parallel to the width direction of the rack, and the positioning platform is slidably arranged on the slide way; the positioning platform is provided with a threaded hole matched with the first screw rod, and the first end of the first screw rod is rotatably connected with the first end of the slide way through the threaded hole; the second end of the first screw rod is connected with the output end of the translation motor through the second end of the slide way, and the translation motor is arranged on the slide way. The side of the positioning platform close to the guide assembly is connected with the first extrusion block through a pressure sensor. The translation motor and the pressure sensor are connected with the touch screen respectively. The extrusion mechanism is provided with an extrusion fixed base, an extrusion electric cylinder and a second extrusion block. The extrusion fixed base is arranged on the rack, the extrusion electric cylinder is arranged on the extrusion fixed base along the length direction of the rack, and the second extrusion block is arranged on the output end of the extrusion electric cylinder. The extrusion electric cylinder is connected with the touch screen. A first light curtain group and a second light curtain group are further arranged on the rack along the width direction of the rack and located on both sides of the lifting positioning mechanism; the first light curtain group and the second light curtain group are connected with the touch screen respectively; the first light curtain group and the second light curtain group are used for detecting whether there is foreign matter in the pressing process. The first light curtain group comprises two first light curtains, and the two first light curtains are oppositely arranged at the two ends of the lifting positioning mechanism. The second light curtain group comprises two second light curtains, and the two second light curtains are oppositely arranged at the two ends of the lifting positioning mechanism. The top of the rack is further provided with an emergency stop button for emergency stop and two start buttons for start, the two start buttons are connected, and the emergency stop button and the two start buttons are connected with the touch screen. A display screen and a handheld code scanning gun for collecting information of a two-dimensional code / bar code of each battery cell to be stacked are further included, the display screen is arranged on the rack and connected with the handheld code scanning gun, and is used for displaying the battery cell information scanned by the handheld code scanning gun each time.

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