All-in-one hot-pressing and formation machine and use method therefor

Abstract

Disclosed in the present invention are an all-in-one hot-pressing and formation machine and a use method therefor. The all-in-one hot-pressing and formation machine comprises: a pressing plate assembly, a battery cell inspection assembly, a heating assembly, a power system, and a power supply assembly, wherein the pressing plate assembly comprises a mounting frame, and a supporting plate and a plurality of pressing plates used for holding a battery cell; the battery cell inspection assembly is used for determining the state of placement of the battery cell in the supporting plate; the heating assembly is used for heating the battery cell held in the supporting plate; the power system uses a servo drive device to drive a pushing plate to move closer to or away from a stop plate, so as to drive the plurality of pressing plates to approach each other for pressing or to drive same to move away from each other for battery cell removal; and the power supply assembly is used for supplying power to the all-in-one hot-pressing and formation machine. When using the servo drive device to drive the pushing plates to press battery cells having different thicknesses, the present invention ensures the pressing accuracy, pressing efficiency, and pressing stability of the power system in the all-in-one hot-pressing and formation machine; a second gear assembly in a gear device enables the distance between guide rods to be adjusted, thus adapting to the formation of battery cells having different sizes.

Description

Hot pressing and chemical forming machine and its use method Technical Field

[0001] The present invention relates to the technical field of battery cell formation for new energy polymer power batteries, and in particular to a hot pressing and forming integrated machine and a method for using the same. Background Art

[0002] Currently, the formation of polymer soft-pack power batteries refers to the charging, discharging, and hot pressing of polymer soft-pack power battery cells after they are produced. The purpose of charging and discharging is to activate the active substances in the polymer soft-pack power battery cells, and the purpose of hot pressing is to prevent the polymer soft-pack power battery cells from expanding and bulging during the charging and discharging process, thereby avoiding safety hazards during use. Only after the battery cells have undergone the charging, hot pressing and other formation processes can they be assembled into polymer soft-pack power batteries for normal use.

[0003] When hot-pressing polymer soft-pack power battery cells, existing hot-pressing equipment must first heat the cells. Once the cells reach a set temperature (maximum 90°C), they are then pressurized. Most pressurization methods use a pneumatic cylinder push rod, which first pressurizes the cylinder, then pushes the push rod through the cylinder piston to pressurize the cells. During the pressurization process, the cylinder adjusts the pressure slowly. From the start of pressurization of the cylinder to pressurization of the battery cell, the conduction process in between is relatively slow, which will affect the efficiency of the equipment in pressurizing the battery cell. The pressurization precision value control is not accurate enough, and often deviates from the actual set pressure value. After the cylinder pipeline has been working for a period of time, the pipeline surface may age, the pipe joints may be poorly sealed, and air leaks may occur, resulting in poor working stability of the entire pressurization device. The cylinder push rod pressurization method also has low compatibility. When the thickness of the battery cell changes, the battery cell with a smaller thickness can be pressurized normally. When the thickness of the battery cell becomes thicker, the required pressure value is greater. The cylinder push rod pressurization mode cannot pressurize the battery cell with a larger thickness normally, and the required pressure value cannot be achieved. All of the above factors will increase the defective rate of the finished battery cell.

[0004] In addition, when conventional forming machines are forming battery cells, PCB structures are mainly set on both sides of the layer board to electrically connect with the tabs of the battery cell. However, the PCB board is fixedly assembled on the layer board and cannot be adjusted according to the length of the battery cell. Therefore, it cannot be used for forming battery cells of different sizes.

[0005] It can be seen that it is particularly important to eliminate the above-mentioned adverse factors of hot pressing, increase the compatibility of hot pressing, and adapt to the formation of battery cells of different sizes.

[0006] Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to provide a hot pressing and forming all-in-one machine, which operates by adopting a servo drive device to drive the gear device, transmits the rotational torque to the screw rod, and the screw rod drives the push plate to pressurize the battery cells clamped in each support plate. When pressurizing battery cells of different thicknesses, the pressurization accuracy, pressurization efficiency and pressurization stability of the power system of the hot pressing and forming all-in-one machine can be ensured under the condition of meeting the required pressure value; the second gear assembly in the gear device can adjust the spacing of the guide rods, and can also meet the needs of battery cells of different sizes.

[0008] The second object of the present invention is to provide a method for controlling and using hot pressing and forming, which uses the above-mentioned hot pressing and forming integrated machine to form battery cells. It can be suitable for pressurizing battery cells of different thicknesses while ensuring the pressurizing accuracy, pressurizing efficiency and pressurizing stability of the power system of the hot pressing and forming integrated machine; the second gear assembly in the gear device can adjust the spacing of the guide rods and can also meet the needs of forming battery cells of different sizes.

[0009] One of the purposes of the present invention is achieved by the following technical solution:

[0010] The hot pressing and chemical forming machine comprises:

[0011] A layer plate assembly, the layer plate assembly comprising a mounting frame, a support plate for clamping the battery cells, and a plurality of layer plates, the plurality of layer plates being slidably mounted in the mounting frame, with the support plate being connected between two adjacent layer plates;

[0012] A battery cell detection component includes a first sensor, a second sensor, and a third sensor. The first sensor is located on the left and right sides of the pallet and is used to detect whether the battery cells clamped in the pallet are aligned. The second sensor and the third sensor are both located in the middle of the pallet and are used to detect whether the battery cells clamped in the pallet are too high. The third sensor is used to detect whether the pallet has missed a battery cell.

[0013] A heating component, the heating component is used to heat the battery core clamped in the support plate;

[0014] The gear assembly comprises a first gear and a second gear assembly, wherein the first gear assembly is connected to the second gear assembly, the second gear assembly is connected to the second gear assembly, and the second gear assembly is connected to the second gear assembly. The gear assembly comprises a first gear assembly and a second gear assembly, wherein the first gear assembly is connected to the second gear assembly, and the second gear assembly is connected to the second gear assembly. The servo drive device is used to drive the push plate to move closer to or away from the baffle after starting; after the push plate moves closer to the baffle, it pushes the multiple layers to move closer to each other, so as to pressurize the battery cells clamped in the pallet; after the push plate moves away from the baffle, it drives the multiple layers to move away from each other, so as to decompress the battery cells clamped in the pallet; the second gear assembly is connected to the first gear assembly, one end of the guide rod is connected to the second gear assembly, and the other end of the guide rod passes through the multiple layers in sequence, and the second gear assembly is used to adjust the spacing between the multiple guide rods;

[0015] A power supply component is installed on the side of the hot pressing and chemical forming machine. The power supply component includes a power box and a power module. The power module is installed in the power box and is used to supply power to the hot pressing and chemical forming machine.

[0016] Furthermore, the first gear assembly includes a driving gear, a driven gear, an adjusting gear, a screw transmission gear and a screw seat, the driving gear is connected to the servo drive device, the driven gear is meshed and connected to the driving gear, the adjusting gear is meshed and connected to the driven gear, and the screw transmission gear is meshed and connected to the adjusting gear; the screw seat is fixedly connected to the screw transmission gear by a bolt; a nut is provided on the push plate, one end of the screw is mounted on the screw seat, and the other end of the screw is threaded through the nut and is rotatably connected to the baffle.

[0017] Furthermore, the power system includes four guide rods, and mounting seats are respectively provided on the left and right sides of the layer plate, and each mounting seat is respectively provided with a through hole on the upper and lower sides, and the through holes correspond to the guide rods respectively; the second gear assembly includes a pinion, a rack, a slide rod and a spacing adjustment plate, and the rack and the slide rod extend along the length direction of the layer plate; the pinion is transmission-connected with the adjustment gear, and the rack is meshed with the pinion for transmission connection, and the spacing adjustment plate is slidably connected to the slide rod and fixedly connected to the rack; one end of each guide rod passes through the through hole in turn, and the other end of each guide rod is fixedly connected to the spacing adjustment plate.

[0018] Furthermore, the heating assembly includes a PCB board mechanism and a heating element, the heating element is arranged in the layer plate, and the heating element is used to heat the battery cells clamped in the support plate. The PCB board mechanism is arranged on both sides of the layer plate, and the PCB board mechanism includes a PCB board, and the PCB board is installed on the mounting seat and is used to electrically connect with the tabs of the battery cells clamped in the support plate.

[0019] Furthermore, the PCB board mechanism also includes a conductive plate, and the conductive plate and the PCB board are respectively arranged on both sides of the mounting seat; an elastic component is provided between the conductive plate and the mounting seat, and one end of the elastic component is connected to the mounting seat; the other end of the elastic component is connected to the conductive plate, and the elastic component is used to provide an elastic stress for driving the conductive plate away from the mounting seat; the conductive plate is used to contact the tabs of the battery cells clamped in the support plate after the battery cells clamped in the support plate are clamped in the support plate.

[0020] Furthermore, the mounting seat is provided with a through-connection groove, and the side of the layer plate can be slidably connected in the through-connection groove; the part of the side of the layer plate passing through the through-connection groove is provided with a guide seat in a detachable manner, and the guide seat is provided with a guide hole; the power system also includes a guide rod, and the two ends of the guide rod are connected to the two ends of the mounting frame; the guide rod passes through the guide holes on the guide seats of multiple layer plates in turn.

[0021] Furthermore, the power system also includes a guide chain, one end of the guide chain is connected to the baffle, and the other end of the guide chain is connected to the push plate. The layer plates are provided with positioning pins, and the positioning pins of each layer plate are respectively inserted into each link of the guide chain.

[0022] Furthermore, the hot pressing and forming machine also includes a wiring frame, which includes a first wiring frame segment and a second wiring frame segment, the first wiring frame segment extends along the arrangement direction of the multiple layers; the second wiring frame segment extends along the height direction of the hot pressing and forming machine to the wiring port of the power box; the power cord is passed through the first wiring frame segment and the second wiring frame segment.

[0023] Furthermore, a heating wire and a heat-conducting layer are provided in the layer plate, and the heating wire coil is provided in the layer plate; the heat-conducting layer covers the outside of the heating wire and is used to contact the supporting plate.

[0024] The second purpose of the present invention is achieved by the following technical solution

[0025] A method for controlling and using hot pressing forming includes a method for forming a battery cell using the hot pressing forming integrated machine as described above.

[0026] Step 1: Press the power button on the equipment, the control system will reset and the operation panel of the equipment will show that it is ready for production;

[0027] The second step is to transfer the cells of the polymer soft-pack power battery to the business card paper tray between multiple layers;

[0028] Step 3: Use the cell detection component to determine the placement of the cells in the tray to avoid problems such as misalignment of the left and right sides, excessively high top surfaces, and missing clamps.

[0029] Step 4: Start the formation command, and the heating component of the equipment begins to heat the battery cells. When the temperature of the battery cells reaches the set value, the driving gear device of the power system starts to operate, transmitting the rotational torque to the screw rod, which drives the push plate to retract the shelves and pressurize the battery cells clamped in each tray;

[0030] Step 5: When the pressure reaches the set value, the power supply assembly starts to charge and discharge the battery cells clamped in the pallet;

[0031] Step 6: After the formation is completed, open the shelf and take out the battery cells clamped in each tray.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The power system of the present invention adopts a servo drive device to rotate forward, drive the gear device to rotate, transmit the rotational torque to the screw rod for forward rotation, and the screw rod then transmits the rotational torque to the force-bearing component of the push plate, so that the push plate can move close to the baffle, so that the multiple layers are close to each other, thereby pressurizing the battery cells clamped in each tray; when the servo drive device rotates reversely, the drive gear device rotates, transmits the rotational torque to the screw rod for reverse rotation, and the screw rod then transmits the rotational torque to the force-bearing component of the push plate, so that the push plate can move away from the baffle, so that the multiple layers are away from each other, and the battery cells clamped in each tray are decompressed, so that the finished battery cells after hot pressing are taken out from the tray. By adopting a servo drive device to drive the gear device to operate, the rotational torque is transmitted to the screw rod, and the screw rod drives the push plate to pressurize the battery cells clamped in each pallet. This method can ensure good pressurization stability of the power system, fast pressurization adjustment speed, and high pressurization efficiency. When the thickness of the battery cell changes, the hot pressing and forming machine can adjust the relevant pressurization parameters according to the thickness of the battery cell to meet the different pressure values ​​required for pressurizing battery cells of different thicknesses, thereby making the hot pressing and forming machine more compatible with battery cells of different thicknesses.

[0034] 2. When the hot pressing and forming machine is performing hot pressing and forming, the second gear assembly in the gear device can adjust the spacing of the guide rods, and then adjust the position of the mounting seat, so that the mounting seat can adjust the position spacing in the length direction of the layer according to the length of the battery cell, so that it can be suitable for battery cells of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic structural diagram of a hot pressing and chemical forming machine according to the present invention;

[0036] FIG2 is a schematic structural diagram of a single hot pressing and forming device of the hot pressing and forming integrated machine of the present invention;

[0037] FIG3 is a schematic diagram of a partially enlarged structure of A in FIG2 of the present invention;

[0038] FIG4 is a schematic structural diagram of a single hot pressing and forming device of the hot pressing and forming integrated machine of the present invention from another perspective;

[0039] FIG5 is a schematic diagram of the internal structure of the gear device of the hot pressing and chemical forming machine of the present invention;

[0040] FIG6 is a schematic diagram of the internal structure of the gear device of the hot pressing and forming machine of the present invention from another perspective;

[0041] FIG7 is a schematic structural diagram of a layer plate assembly of a hot pressing and chemical forming machine according to the present invention;

[0042] FIG8 is a schematic structural diagram of a laminate assembly of a hot pressing and chemical forming machine of the present invention clamping a battery cell of a certain size;

[0043] FIG9 is a schematic structural diagram of the laminate assembly of the hot pressing and chemical forming machine of the present invention clamping a battery cell of another size.

[0044] In the figure: 1. Shelf assembly; 11. Mounting frame; 12. Support plate; 13. Shelf; 131. Mounting seat; 132. Through hole; 133. Guide seat; 134. Positioning pin; 14. First wiring frame; 15. Second wiring frame; 2. Cell detection assembly; 21. First sensor; 22. Second sensor; 23. Third sensor; 3. Heating assembly; 31. PCB board; 32. Heating element; 33. Temperature sensor; 4. Power system; 41. Servo drive device; 4 2. Screw; 43. Push plate; 431. Nut; 44. Baffle; 45. Guide rod; 46. First gear assembly; 461. Driving gear; 462. Driven gear; 463. Adjustment gear; 464. Screw transmission gear; 465. Screw seat; 47. Second gear assembly; 471. Pinion; 472. Rack; 473. Slide rod; 474. Spacing adjustment plate; 48. Guide rod; 49. Guide chain; 5. Power supply assembly; 51. Power box; 6. Battery cell. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0046] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0048] The hot pressing and chemical forming machine shown in Figure 1-7 includes:

[0049] The layer plate assembly 1 includes a mounting frame 11, a support plate 12 for clamping the battery cell 6, and a plurality of layer plates 13. The plurality of layer plates 13 are slidably mounted in the mounting frame 11, and a support plate 12 is connected between two adjacent layer plates 13;

[0050] The battery cell detection component 2 includes a first sensor 21, a second sensor 22 and a third sensor 23. The first sensor 21 is provided on the left and right sides of the support plate 12. The first sensor 21 is used to detect whether the battery cells 6 clamped in the support plate 12 are aligned; the second sensor 22 and the third sensor 23 are both provided in the middle of the support plate 12. The second sensor 22 is used to detect whether the battery cells 6 clamped in the support plate 12 are too high; the third sensor 23 is used to detect whether the battery cells 6 are missing from the support plate 12;

[0051] The heating component 3 is used to heat the battery cell 6 clamped in the support plate 12;

[0052] The power system 4 includes a servo drive device 41, a gear device, a screw 42, a push plate 43, a baffle 44 and a guide rod 45. The gear device includes a first gear assembly 46 and a second gear assembly 47. The push plate 43 is movably arranged at one end of the installation frame 11, and the baffle 44 is arranged at the other end of the installation frame 11; a plurality of layer plates 13 are arranged between the push plate 43 and the baffle 44; the servo drive device 41 is connected to the first gear assembly 46, the first gear assembly 46 is connected to the screw 42, and the screw 42 is connected to the push plate 43 ... Used to drive the push plate 43 to move closer to or away from the baffle 44 after startup; after the push plate 43 moves closer to the baffle 44, it pushes the multiple layer plates 13 closer to each other, so as to pressurize the battery cells 6 clamped in the support plate 12; after the push plate 43 moves away from the baffle 44, it drives the multiple layer plates 13 away from each other, so as to decompress the battery cells 6 clamped in the support plate 12; the second gear assembly 47 is transmission-connected to the first gear assembly 46, one end of the guide rod 45 is connected to the second gear assembly 47, and the other end of the guide rod 45 passes through the multiple layer plates 13 in sequence. The second gear assembly 47 is used to adjust the spacing of the guide rods 45;

[0053] The power supply assembly 5 is installed on the side of the hot pressing and forming machine. The power supply assembly 5 includes a power box 51 and a power module. The power module is installed in the power box 51 and is used to supply power to the hot pressing and forming machine.

[0054] In this embodiment, the layer plate 13 located near the push plate 43 of the installation frame 11 is connected to the push plate 43. When the push plate 43 moves close to the baffle 44, the push plate 43 can push the multiple layer plates 13 located between the push plate 43 and the baffle 44 closer to each other.

[0055] On the basis of the above structure, when using the hot pressing integrated machine of the present invention, the battery cell 6 is transferred outside the machine body through the battery cell 6 transfer device (such as an AGV cart equipped with a robot), and then the battery cell 6 is clamped and transferred to the support plate 12 between two adjacent layer plates 13 by the robot, and after the battery cell 6 is clamped on the support plate 12 between the two adjacent layer plates 13.

[0056] The heating assembly 3 heats the inner layer plates 13 , thereby allowing the battery core 6 sandwiched between the two layer plates 13 to be heated. The battery core 6 can reach a certain temperature after being heated.

[0057] When the battery cell 6 is pressurized, the servo drive device 41 is started, and the servo drive device 41 rotates forward, driving the first gear assembly 46 to rotate forward, thereby driving the screw rod 42 to start rotating forward, and the screw rod 42 is connected to the push plate 43 for transmission. When the screw rod 42 starts to rotate forward, the push plate 43 moves in the direction close to the baffle 44. In the process of the push plate 43 moving in the direction close to the baffle 44, the layer plate 13 connected thereto can be pushed to move close to the baffle 44. Under the driving force of the push plate 43, the multiple layer plates 13 approach each other, and the battery cell 6 is squeezed. There is a battery cell 6 structure between two adjacent layer plates 13. When the layer plates 13 are squeezed against the layer plates 13, the PCB board 31 of one layer plate 13 is squeezed and contacted with the battery cell 6 pole ear of the other layer plate 13 to achieve conductivity. After the battery cell 6 is energized, the electrolyte in the battery cell 6 can be charged and activated to realize the formation of the battery cell 6.

[0058] After the pressurization of the battery cell 6 is completed, the servo drive device 41 changes from the forward rotation during pressurization to the reverse rotation. After the servo drive device 41 rotates in the reverse direction, it drives the first gear assembly 46 to rotate in the reverse direction, thereby driving the screw rod 42 to start rotating in the reverse direction. The screw rod 42 is connected to the push plate 43 for transmission. When the screw rod 42 starts to rotate in the reverse direction, the push plate 43 moves in the direction away from the baffle 44. In the process of the push plate 43 moving away from the baffle 44, the layer plate 13 connected thereto can also be pulled away from the baffle 44. The multiple layer plates 13 move away from each other under the pulling force of the push plate 43, and the battery cell 6 that has been hot-pressed is taken out, and then the next working cycle is carried out.

[0059] By using the servo drive device 41, the movement of the push plate 43 can be automatically controlled based on information such as the thickness of the battery cell 6 and the required pressure. This allows the layer plate 13 to apply pressure to the battery cell 6 in a manner that meets the pressure requirements of battery cells of varying thicknesses. Thicker battery cells 6 require greater pressure, while thinner battery cells require less pressure. Thus, the servo drive device 41 can apply different pressures based on the thickness of the battery cell 6, improving the precision of the pressure application and ensuring greater stability.

[0060] It should be noted that, in this embodiment, the push plate 43 is set at one end of the installation frame 11, and the baffle 44 is set at the other end of the installation frame 11. The baffle 44 can also be set at other positions of the installation frame 11, and can be selected and set according to actual needs.

[0061] In addition, the second gear assembly 47 can adjust the spacing between the guide rods 45, and the guide rods 45 are connected to the mounting seats 131 on the layer 13. Since the mounting seats 131 on both sides can slide along the layer 13, the PCB board 31 on the mounting seat 131 can also slide relative to the layer 13. In this way, the position of the PCB board 31 of the mounting seat 131 on the layer 13 can be adjusted by adjusting the spacing between the guide rods 45. When the size of the battery cell 6 is large, the relative positions of the pole ears on both sides of the battery cell 6 are far apart, so the guide rod 45 can be controlled to move horizontally by rotating the second gear assembly 47, and the spacing between the guide rods 45 is pulled apart by the second gear assembly 47, so that the two mounting seats 131 slide away from each other, so that the distance between the two PCB boards 31 becomes larger, which is suitable for large-size battery cells 6 with the pole ears on both sides of the battery cell 6 being far apart. When the battery cell 6 is small, the tabs on both sides of the battery cell 6 are relatively close to each other. Therefore, the second gear assembly 47 can be rotated to control the horizontal movement of the guide rod 45. The second gear assembly 47 shortens the distance between the guide rods 45, thereby causing the two mounting seats 131 to slide closer to each other, thereby reducing the distance between the two PCB boards 31. This is suitable for small-sized battery cells 6 with relatively close tabs on both sides of the battery cell 6. In other words, by adjusting the distance between the two PCB boards according to the size of the battery cell 6, the scope of application is wider.

[0062] In this embodiment, the parallelism of the working surface of the layer 13 must be less than or equal to 0.05mm, and the flatness of the surface of the layer 13 must be less than or equal to 0.03mm, so that the pressure on the surface of the layer 13 remains flat and uniform. It is also necessary to ensure the uniformity of the pressure of the layer 13, so that the pressure between the layers 13 is between 200-2000kgf, and the accuracy between the front, middle and back clamps in the same row of clamps must be between ±15kgf. In addition, the pressure control accuracy must be controlled to be within the range of 300-1000kgf±20kgf, so as to achieve high pressure control accuracy, good pressure stability and fast pressure adjustment speed, so that battery cells 6 of different thicknesses can be pressurized at the same time, improving compatibility.

[0063] In addition, the layer 13 is heated by using an epoxy resin electric heating plate, and the dimensions can be adjusted. The temperature of the layer 13 can be adjusted to 90°C at most, and the temperature uniformity of the support plate 12 between the layer 13 and the layer 13 is between ±2°C, the temperature difference between each support plate 12 is between ±3°C, and the temperature difference of the entire layer assembly 1 does not exceed 3°C. The time required to heat from room temperature to 85°C is 20 minutes, and the temperature is kept stable within 20 minutes, thereby improving the stability and speed of the hot pressing of the battery cell 6 by the hot pressing integrated machine. Of course, the heating method of the layer 13 can also be set by other methods in the existing technology, which can be selected and set according to the needs of the actual situation.

[0064] It should be noted that the support plate 12 in this embodiment includes two supporting plates. The bottom ends of the two adjacent supporting plates are connected, and the top ends of the two adjacent supporting plates are spaced apart to form a clamping gap for the battery cell 6 through which the power core 6 is inserted. The top ends of the supporting plates are provided with a connecting plate, which has a connecting hole. The connecting plate can be installed on the top of the layer 13. The connecting hole is provided with a screw, which can assemble the connecting plate on the top of the layer 13. When the layer 13 is close to each other, the gap between the supporting plates can be compressed, applying pressure to the battery cell 6. Of course, the above-mentioned support plate 12 can be selected as a paper support structure in the prior art.

[0065] Furthermore, a guide block can be provided at the top of the layer 13, with a guide slope on the top of the guide block; the guide slope gradually slopes from top to bottom toward the mounting surface of the battery cell 6. Based on this structure, after the battery cell 6 is placed on the support plate 12 of the layer 13, the battery cell 6 can contact the guide slope of the guide block, and then the battery cell 6 is guided into the support plate 12, reducing the possibility of deviation during the placement process and making the placement process more stable.

[0066] The battery cell detection assembly 2 includes a first sensor 21, a second sensor 22, and a third sensor 23. When the battery cell 6 is placed on the support plate 12, the first sensor 21 can detect whether the battery cell 6 is shifted in position, and can remind you to make adjustments after the position shift occurs to prevent the battery cell 6 from being crushed by the PCB board 31. The second sensor 22 detects whether the battery cell 6 exceeds the height of the clamp. When the battery cell 6 exceeds the height of the clamp, it needs to be adjusted to prevent the battery from being crushed due to unbalanced force caused by the battery cell 6 not being placed in place. The third sensor 23 is used to detect whether there is a missing clamp in the clamp. When the third sensor 23 detects a missing clamp in the clamp, it needs to be adjusted to prevent the next batch of batteries from being crushed when entering the clamp.

[0067] The body is also provided with a power assembly 5, and the above-mentioned power assembly 5 comprises a power box 51 and a power module, specifically the power box 51 is located on the body, the power module is installed in the power box 51, the PCB board 31 on each layer plate 13 is all connected with a power line, and each power line is all drawn by the formation chamber and is connected in the power box 51, to be electrically connected with the power module. On this structural basis, the body of this forming machine can be integrated with the power module, by the power line that is connected with the PCB board 31 on the layer plate 13 is all drawn by the formation chamber and accesses the power box 51, directly be electrically connected with the power module, the power module just can power the layer plate 13, and battery core 6 is realized to be charged and formed.

[0068] Unlike the prior art, the power supply is placed in a separate power cabinet, separate from the machine body. When routing the power cord, it is necessary to pass the power cord through the cabinet and then into the forming machine, which is inconvenient and takes up a lot of space. In this embodiment, the power module is assembled on the machine body and directly integrated into the machine body, achieving an integrated assembly with the machine body. The wiring can be routed internally, which is convenient and saves space. In addition, the power box 51 can be placed outside the power module to protect it.

[0069] Furthermore, the first gear assembly 46 includes a driving gear 461, a driven gear 462, an adjusting gear 463, a screw transmission gear 464 and a screw seat 465. The driving gear 461 is transmission-connected to the servo drive device 41, the driven gear 462 is meshingly transmission-connected to the driving gear 461, the adjusting gear 463 is meshingly transmission-connected to the driven gear 462, and the screw transmission gear 464 is meshingly transmission-connected to the adjusting gear 463; the screw seat 465 is fixedly connected to the screw transmission gear 464 by a bolt; a nut 431 is provided on the push plate 43, one end of the screw 42 is mounted on the screw seat 465, and the other end of the screw 42 is threaded through the nut 431 and is rotatably connected to the baffle 44.

[0070] On the basis of the above structure, when the layer plate 13 is moving, the servo drive device 41 can be started to drive the driving gear 461 on the first gear assembly 46 to rotate. The rotation of the driving gear 461 will drive the driven gear 462 to rotate, and the rotation of the driven gear 462 will also drive the adjusting gear 463 to rotate, and then drive the screw transmission gear 464 to rotate. The rotation of the screw transmission gear 464 will also cause the screw seat 465 fixed thereon to rotate, and drive the screw 42 to start rotating. The rotation of the screw 42 can drive the thread to rotate, and the rotation torque of the screw 42 is transmitted to the nut 431 of the push plate 43, and the push plate 43 can move close to or away from the baffle 44. When the servo drive device 41 rotates forward, the push plate 43 moves close to the baffle 44 and pressurizes the battery cell 6; when the servo drive device 41 rotates reversely, the push plate 43 moves away from the baffle 44 and decompresses the battery cell 6, so that the finished battery cell 6 after hot pressing can be taken out from the support plate 12.

[0071] By adopting the servo drive device 41 and the screw rod 42 for driving, the battery cell 6 can be pressurized accurately, and the pressurization is stable and the pressure adjustment speed is fast. At the same time, the servo drive device 41 drives the screw rod 42 to transmit the pressurization method. When the thickness of the battery cell 6 changes, it can be adjusted according to the thickness of the battery cell 6 to meet the pressure value required for pressurization. It can pressurize battery cells 6 of different thicknesses at the same time and has good compatibility.

[0072] Furthermore, in the power system 4, the push plate 43 is driven to move by the screw 42. Since the push plate 43 is a steel plate with a thickness of not less than 40 mm, in order to enable the screw 42 to bear the weight of the push plate 43 during long-term use and to prevent the screw 42 itself from being invariant, it is necessary to set the diameter of the screw 42 to not less than 40 mm, so that the screw 42 can well bear the weight of the push plate 43, and during the movement, the screw 42 maintains smooth and synchronous transmission, reducing the possibility of jamming, and no offset occurs during hot pressing of the battery, and the battery surface does not wrinkle. In order to ensure that the push plate 43 connected to the screw 42 has a reliable guiding function, the shaft sleeve of the guide rod 48 is an oil-free shaft sleeve, so that the transmission of the screw 42 is smoother.

[0073] Of course, the servo drive device 41 can be implemented by a servo motor in the prior art. Since the air cylinder or oil cylinder uses air pressure or oil pressure to achieve propulsion, there is a situation where the pressure is unstable, resulting in uneven pressure during propulsion. The pushing plate 43 squeezes the layer 13 during the pushing process, which easily forms a wrinkle structure on the surface of the battery cell 6. However, in this embodiment, a servo motor is used to drive the screw rod 42 to rotate. The screw rod 42 and the nut 431 are driven by a threaded engagement. The servo motor is driven, and the servo motor torque remains unchanged. The movement distance of the layer 13 is controllable and the pressure is uniform.

[0074] Furthermore, the power system includes four guide rods 45, and mounting seats 131 are respectively provided on the left and right sides of the layer plate 13, and through holes 132 are respectively provided on the upper and lower sides of the mounting seats 131, that is, each layer plate 13 is respectively provided with four through holes 132, and the four through holes 132 correspond to the four guide rods 45 respectively; the second gear assembly 47 includes a pinion 471, a rack 472, a slide rod 473 and a spacing adjustment plate 474, and the rack 472 and the slide rod 473 extend along the length direction of the layer plate 13; the pinion 471 is transmission-connected with the adjustment gear 463, the rack 472 is meshed with the pinion 471 for transmission connection, and the spacing adjustment plate 474 is slidably connected to the slide rod 473 and fixedly connected to the rack 472; one end of the guide rod 45 passes through multiple through holes 132 in sequence, and the other end of the guide rod 45 is fixedly connected to the spacing adjustment plate 474.

[0075] Based on the above structure, the second gear assembly 47 can adjust the spacing between the guide rods 45. The four guide rods 45 are respectively arranged at the four diagonal positions of the upper, lower, left and right sides of the layer plate 13, and the four guide rods 45 are respectively connected to the mounting seats 131 on both sides of the layer plate 13 through four through holes 132. Since the mounting seats 131 on both sides can slide along the layer plate 13, the spacing of the guide rods 45 can be adjusted to adapt to the size of the battery cell 6.

[0076] When the size of the battery cell 6 is large, the relative positions of the tabs on both sides of the battery cell 6 are far apart, so the position of the mounting seat 131 needs to be moved away, and the servo drive device 41 drives the pinion 471 to rotate, and the pinions 471 on both sides move in directions away from each other, thereby causing the rack 472 to also move in directions away from each other, and drive the spacing adjustment plate 474 fixedly connected thereto to move in directions away from each other, and the guide rod 45 moves with the movement of the spacing adjustment plate 474 and widens the distance, so that the two mounting seats 131 slide away from each other, so that the distance between the two PCB boards 31 becomes larger, which is suitable for large-sized battery cells 6 with relatively far relative positions of the tabs on both sides of the battery cell 6.

[0077] When the size of the battery cell 6 is small, the relative positions of the tabs on both sides of the battery cell 6 are close, so the position of the mounting seat 131 needs to be moved closer, and the servo drive device 41 drives the small gear 471 to rotate, and the small gears 471 on both sides move in the direction of approaching each other, so that the rack 472 also moves in the direction of approaching each other, and drives the spacing adjustment plate 474 fixedly connected thereto to move in the direction of approaching each other, and the guide rod 45 moves with the movement of the spacing adjustment plate 474 and shortens the spacing, so that the two mounting seats 131 slide close to each other, so that the distance between the two PCB boards 31 becomes smaller, which is suitable for small-sized battery cells 6 with smaller relative positions of the tabs on both sides of the battery cell 6.

[0078] That is, the distance between the two guide rods 45 is adjusted by the servo drive device 41 , so that the distance between the two mounting seats 131 can be adjusted according to the size of the battery cell 6 , which has a wider range of applicability.

[0079] Furthermore, the heating assembly 3 includes a PCB board mechanism and a heating element 32. The heating element 32 is arranged in the layer plate 13. The heating element 32 is used to heat the battery cell 6 clamped in the support plate 12. The PCB board mechanism is arranged on both sides of the layer plate 13. The PCB board mechanism includes a PCB board 31. The PCB board 31 is installed on the mounting seat 131 and is used to electrically connect with the tabs of the battery cell 6 clamped in the support plate 12.

[0080] Based on the above structure, heating is performed inside the layer plate 13 by the heating element 32, so that the battery cell 6 sandwiched between the two layer plates 13 can be heated, and the battery cell 6 can reach a certain temperature after being heated. The servo drive device 41 drives the push plate 43 to move closer to the baffle 44. In the process of the push plate 43 moving closer to the baffle 44, it can push the layer plate 13 connected to it to move closer to the baffle 44. Under the driving force of the push plate 43, multiple layer plates 13 can move closer to each other, and the battery cell 6 is squeezed. There is a battery cell 6 structure between each adjacent layer plate 13. When the layer plates 13 are squeezed against the layer plates 13, the PCB board 31 of one layer plate 13 is squeezed into contact with the battery cell 6 tab of the other layer plate 13 to achieve conductivity. After the battery cell 6 is energized, the electrolyte in the battery cell 6 can be charged and activated to achieve battery cell 6 formation.

[0081] Furthermore, the second gear assembly 47 can adjust the spacing between the guide rods 45 on either side, allowing the mounting seats 131 on either side to slide along the layer plate 13. The PCB board 31 on the mounting seats 131 can also slide relative to the layer plate 13. This allows the position of the PCB board 31 on the layer plate 13 relative to the mounting seats 131 to be adjusted. When the battery cell 6 is large, the tabs on either side of the battery cell 6 are relatively far apart. Therefore, by increasing the spacing between the guide rods 45 on either side, the two mounting seats 131 can slide away from each other, increasing the distance between the two PCB boards 31. This is suitable for large-sized battery cells 6 where the tabs on either side of the battery cell 6 are relatively far apart. When the battery cell 6 is small, the tabs on either side of the battery cell 6 are relatively close together. Therefore, by shortening the spacing between the guide rods 45 on either side, the two mounting seats 131 can slide toward each other, reducing the distance between the two PCB boards 31. This is suitable for small-sized battery cells 6 where the tabs on either side of the battery cell 6 are relatively close together. In other words, by adjusting the spacing between the two PCB boards according to the size of the battery cell 6, the application range is expanded.

[0082] Furthermore, the heating assembly 3 further includes a temperature sensor 33 , which is electrically connected to the heating element 32 and can be used to adjust the heating temperature of the heating element 32 .

[0083] On the basis of the above structure, the layer 13 is heated by adopting an epoxy resin electric heating plate, and the dimension can be adjusted. The temperature of the layer 13 can be adjusted to 90°C at most, and the temperature uniformity of the support plate 12 between the layer 13 and the layer 13 is between ±2°C, the temperature difference between each support plate 12 is between ±3°C, and the temperature difference of the entire layer assembly 1 does not exceed 3°C. The time required to heat from room temperature to 85°C is 20 minutes, and the temperature is kept stable within 20 minutes, thereby improving the stability and speed of the hot pressing of the battery cell 6 by the hot pressing integrated machine. Therefore, the heating temperature of the heating element 32 is detected and controlled by the temperature sensor 33, so that the heating element 32 can meet the temperature of the hot pressing of the battery cell 6. Of course, the heating method of the layer 13 can also be set by other methods in the existing technology, which can be selected and set according to the needs of the actual situation.

[0084] Furthermore, the PCB board mechanism also includes a conductive plate, and the conductive plate and the PCB board 31 are respectively arranged on both sides of the mounting seat 131. Specifically, an elastic component 34 is provided between the conductive plate and the mounting seat 131, and one end of the elastic component 34 is connected to the mounting seat 131, and the other end of the elastic component 34 is connected to the guide plate. The elastic component 34 can provide an elastic stress. Under the action of this elastic stress, the conductive plate can have a tendency to move away from the mounting seat 131, and the conductive plate contacts the pole ear of the battery cell 6 after the battery cell 6 is clamped on the support plate 12.

[0085] On the basis of the above structure, since multiple layers 13 are set on the body of the hot pressing and forming machine when the battery cell 6 is formed, during hot pressing and forming, each layer 13 is clamped with each battery cell 6, and then approached between the layer 13 and the layer 13. When the layer 13 and the layer 13 are squeezed, the PCB board 31 of one layer 13 is squeezed and contacted with the conductive plate of the other layer 13 to achieve conductivity, that is, the conductive plate on one of the layer plates 13 presses the tab of the battery cell 6 in contact with it onto the PCB board 31 of the other layer plate 13 for conductive contact, so that the electrical connection surface is larger and the electrical connection structure is more stable.

[0086] When the layer plate 13 is squeezed, the elastic component 34 can provide elastic stress to apply pressure on the conductive plate. The elastic stress provided by the elastic component 34 can drive the conductive plate to be pressed toward the conductive plate. The conductive plate is pressed against the tab of the battery cell 6 to the PCB board 31, so that the conductive plate, the tab of the battery cell 6 and the PCB board 31 can be kept in a conductive state under a certain pressure, and the conductive structure is more stable.

[0087] Furthermore, a through-connection groove is provided on the mounting seat 131, and the side of the layer plate 13 can be slidably connected in the through-connection groove; the part of the side of the layer plate 13 passing through the through-connection groove is provided with a guide seat 133 in a detachable manner, and a guide hole is provided on the guide seat 133; the power system 4 also includes a guide rod 48, and the two ends of the guide rod 48 are connected to the two ends of the mounting frame 11; the guide rod 48 passes through the guide holes on the guide seats 133 of multiple layer plates 13 in turn.

[0088] On the basis of the above structure, when the second gear assembly 47 adjusts the spacing between the guide rods 45, the small gear 471 on one end of the mounting frame 11 will rotate to move the rack 472 engaged therewith, and the movement of the rack 472 drives the spacing adjustment plate 474 to move on the slide rod 473, thereby causing the guide rod 45 to move horizontally. In order to make the two ends of the guide rod 45 move horizontally synchronously to keep the spacing between the two ends of the guide rod 45 consistent, another second gear assembly needs to be set at the other end of the mounting frame 11 to make the two ends of the guide rod 45 move horizontally synchronously.

[0089] In order to make both ends of the guide rod 45 rotate horizontally at the same time, the guide rod 48 needs to be connected to the pinion gears 471 at both ends of the mounting frame 11, so that the pinion gears 471 at both ends of the mounting frame 11 rotate synchronously. When the pinion gear 471 at one end near the servo drive device 41 begins to rotate, the rotation of the pinion gear 471 at this end drives the rotation of the guide rod 48, thereby directing the rotational torque to the pinion gear 471 at the other end of the mounting frame 11, causing the pinion gear 471 at the other end to rotate synchronously. The pinion gears 471 at both ends rotate simultaneously, driving the racks 472 at both ends to start moving simultaneously. Then, the movement of the racks 472 drives the spacing adjustment plates 474 at both ends to move horizontally on the slide rods 473, thereby causing the two ends of the guide rod 45 to move horizontally synchronously, and thus accurately adjusting the spacing of the mounting base 131.

[0090] Furthermore, the power system 4 in this embodiment also includes a guide chain 49, one end of the guide chain 49 is connected to the baffle 44, and the other end of the guide chain 49 is connected to the push plate 43. A positioning pin 134 is provided on the layer plate 13, and the positioning pins 134 of each layer plate 13 are respectively inserted into each link of the guide chain 49.

[0091] On the basis of this structure, in the process of the pushing plate 43 pushing the multiple layer plates 13 closer to each other, since the layer plates 13 are connected to the guide chain 49 through the positioning pins 134, the guide chain 49 can be retracted as the multiple layer plates 13 approach each other. When the pushing plate 43 returns, the pushing plate 43 moves away from the baffle 44, which can pull the layer plates 13 back. The return of the layer plates 13 is limited by the positioning pins 134 and the chain links of the guide chain 49. Therefore, the distance between the layer plates 13 and the layer plates 13 can be controlled by the chain link spacing of the guide chain 49, thereby preventing the distance between the layer plates 13 and the layer plates 13 from being uncontrollable during the return process and damaging the pallet 12 or the battery cell 6.

[0092] Specifically, a touch switch can also be set on the baffle 44, and the positioning pin 134 of the layer plate 13 close to the baffle 44 can touch the touch switch on the baffle 44 after the layer plate 13 moves into place, thereby controlling the stop of the servo drive device 41 to prevent the battery cell 6 from being crushed.

[0093] Of course, an elastic member can also be set between the baffle 44 and the end plate of the mounting frame 11. The elastic member can provide a certain buffering force when multiple layer plates 13 are squeezed by the push plate 43, which is used to buffer hard squeezing and reduce direct contact between the layer plates 13 and the baffle 44.

[0094] Furthermore, a pressure sensor can be provided on the baffle 44 to detect the extrusion force between the layer plate 13 and the baffle 44. When the pressure sensor detects that the pressure value preset in the control system of the machine body is reached, a pressure value signal can be sent to the servo drive device 41 to control the servo drive device 41 to stop in time and start heating and forming.

[0095] Furthermore, a wiring frame is provided in the hot pressing and forming machine, and the wiring frame includes a first wiring frame 14 and a second wiring frame 15. The first wiring frame 14 extends along the arrangement direction of the multiple layers 13, and the second wiring frame 15 extends along the height direction of the hot pressing and forming machine to the wire entry port of the power box 51. The power line electrically connected to the PCB board 31 on the layer 13 can be passed through the first wiring frame 14. In this embodiment, a plurality of wiring terminals can be provided on the first wiring frame 14. The plurality of wiring terminals can be electrically connected to the corresponding power lines and transferred, and then led out through the transfer line and passed into the second wiring frame 15 to connect to the power module of the power box 51. In this way, by providing the wiring frame, all the power lines are routed together, which avoids line confusion and facilitates wiring.

[0096] It should be noted that a plurality of through-hole structures are provided on the first wiring frame 14 and the second wiring frame 15 for dissipating heat from the power lines.

[0097] Furthermore, a plurality of heat dissipation holes are provided on the side of the power box 51 facing away from the hot pressing and forming machine. That is to say, the power box 51 cover is arranged on the outside of the power module. In order not to affect the heat dissipation, a plurality of heat dissipation holes are provided on the power box 51. The heat dissipation holes can be used to dissipate the working heat of the power box 51.

[0098] Furthermore, a heating wire and a heat-conducting layer are provided in the layer plate 13. The heating wire coil is arranged on the layer plate 13, and the heat-conducting layer covers the heating wire and is used to contact the support plate 12. That is, when the layer plate 13 is heated, the heating wire can be spread over the entire surface where the battery cells 6 are mounted. When the heating wire is heated, the entire surface where the battery cells 6 are mounted on the layer plate 13 can be evenly heated, and the heat is transferred to the battery cells 6 in the support plate 12 through the heat-conducting layer to heat the battery cells 6. In this way, the heating effect is more uniform.

[0099] Of course, the above-mentioned heat-conducting layer can be formed by a Teflon material layer coated on the layer plate 13. The Teflon material has high temperature resistance, good thermal conductivity, and can also be insulated. It can insulate the heating wire from the PCB board 31 and the battery core 6 to avoid leakage or short circuit.

[0100] More specifically, the heating wire has multiple first heating segments distributed longitudinally and multiple second heating segments distributed transversely; two adjacent first heating segments are connected by a second heating segment. In this way, the heating wire is distributed on the mounting surface of the battery cell 6, with multiple first heating segments distributed longitudinally and multiple second heating segments distributed transversely. The heating surface on the mounting surface of the battery cell 6 has a larger heating surface and a more uniform heating effect.

[0101] Certainly, the two electrical connectors of the above-mentioned heating wire can be stretched out from below the layer plate 13 for access to a power source. In addition, the heating wire can also be coiled on the layer plate 13, which can also increase the heating area and make the heating effect uniform.

[0102] It should be noted that the heating element 32 can also be implemented as multiple heating tubes, and the multiple heating tubes are distributed at intervals within the layer plate 13. However, when multiple heating tubes are used for heating, the heating temperature of the heating tubes is concentrated at the distribution position of the heating tubes, which will result in uneven heat distribution.

[0103] Example 2,

[0104] A method for controlling and using hot pressing and forming, including a method for forming a battery cell 6 using the hot pressing and forming integrated machine of embodiment 1, specifically,

[0105] Step 1: Press the power button on the equipment, the control system will reset and the operation panel of the equipment will show that it is ready for production;

[0106] The second step is to transfer the cells of the polymer soft-pack power battery to the business card paper tray between multiple layers;

[0107] Step 3: Use the cell detection component to determine the placement of the cells in the tray to avoid problems such as misalignment of the left and right sides, excessively high top surfaces, and missing clamps.

[0108] Step 4: Start the formation command, and the heating component of the equipment begins to heat the battery cells. When the temperature of the battery cells reaches the set value, the driving gear device of the power system starts to operate, transmitting the rotational torque to the screw rod, which drives the push plate to retract the shelves and pressurize the battery cells clamped in each tray;

[0109] Step 5: When the pressure reaches the set value, the power supply assembly starts to charge and discharge the battery cells clamped in the pallet;

[0110] Step 6: After the formation is completed, open the shelf and take out the battery cells clamped in each tray.

[0111] In this embodiment, when the above-mentioned hot pressing and forming machine is used to hot press the battery cell 6, according to step one, the power button of the hot pressing and forming machine is activated, the control system is reset and ready, the hot pressing and forming temperature is set, and the operation panel of the equipment starts to display that production is possible.

[0112] Step 2: When the operation panel indicates that production is possible, first move the battery cells of the polymer soft-pack power battery to the business card paper support plate 12 between adjacent layers 13, and place the battery accurately according to the position.

[0113] Step three, when the battery is placed on the pallet 12, the first sensor 21 on the pallet 12 starts to detect the position of the battery cell 6 to detect whether the battery cell 6 is offset. When the battery is detected to be offset, the position of the battery cell 6 needs to be adjusted and the position of the battery cell 6 is placed accurately to prevent the battery cell 6 from being crushed by the PCB copper plate; the second sensor 22 starts to detect whether the battery cell 6 exceeds the height. When the battery cell 6 exceeds the height, it needs to be readjusted to prevent the battery cell 6 from being not placed in place, causing unbalanced force and crushing the battery cell 6; the third sensor 23 detects whether there is any battery cell 6 missing from the pallet 12 to prevent the battery from being crushed when the next batch of battery cells 6 enters.

[0114] Step 4: After the detection is completed and the position of the battery cell 6 is accurately placed, the formation command is started. After starting, the heating element 32 heats the layer plate 13, causing the layer plate 13 to start heating up. The temperature sensor 33 inside the layer plate 13 can detect the temperature of the layer plate 13 and display it on the operation panel. When the temperature of the battery cell 6 reaches the set value, the servo drive device 41 of the power system 4 drives the first gear assembly 46 to start rotating, and the first gear assembly 46 is linked to the screw rod 42 to rotate forward. The screw rod 42 rotates forward to drive the push plate 43 to move close to the baffle 44, thereby retracting the layer plate 13 and starting to pressurize the battery cell 6. The pressure is adjusted according to the thickness of the battery cell 6 to pressurize the battery cell 6 to the required pressure value.

[0115] Step five: After the layer plate 13 is adjusted according to the thickness of the battery cell 6 and reaches a predetermined pressure value, the power supply system starts to charge and discharge the battery cell 6 clamped in the support plate 12, and maintains stability and precisely controls the pressure on the battery cell 6 during the charging and discharging process.

[0116] Step six, when the formation is completed, the servo drive device 41 of the power system 4 drives the first gear assembly 46 to rotate in the opposite direction, and the first gear assembly 46 links the screw rod 42 to rotate in the opposite direction, and the screw rod 42 rotates in the opposite direction to drive the push plate 43 to move away from the baffle 44, so that the layers 13 move away from each other, open the layer 13, and take out the battery cell 6 from the support plate 12, thereby completing the hot pressing formation of the battery cell 6.

[0117] Specifically, the above-mentioned hot pressing and chemical forming machine can be equipped with automatic transfer equipment, such as a robot, a stacker, an overhead crane, etc., to load and unload the battery cells 6 and realize automated loading and unloading production.

[0118] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the present invention.

Claims

1. Hot pressing and forming machine, characterized in that: The hot pressing and chemical forming machine comprises: A layer plate assembly, the layer plate assembly comprising a mounting frame, a support plate for clamping the battery core, and a plurality of layer plates, the plurality of layer plates being slidably mounted in the mounting frame, and the support plate being connected between two adjacent layer plates; A battery cell detection component, the battery cell detection component includes a first sensor, a second sensor and a third sensor, the first sensor is arranged on the left and right sides of the pallet, and the first sensor is used to detect whether the battery cells clamped in the pallet are aligned; the second sensor and the third sensor are both arranged in the middle of the pallet, and the second sensor is used to detect whether the battery cells clamped in the pallet are too high; the third sensor is used to detect whether the pallet has missed a battery cell; A heating component, the heating component is used to heat the battery core clamped in the support plate; A power system, the power system includes a servo drive device, a gear device, a screw rod, a push plate, a baffle and a plurality of guide rods, the gear device includes a first gear assembly and a second gear assembly, the push plate is movably arranged at one end of the mounting frame, and the baffle is arranged at the other end of the mounting frame; a plurality of layer plates are arranged between the push plate and the baffle; the servo drive device is transmission-connected to the first gear assembly, the first gear assembly is transmission-connected to the screw rod, and the screw rod is transmission-connected to the push plate; the servo drive device is used to drive the push plate to move closer to or away from the baffle after starting; after the push plate moves closer to the baffle, it drives the plurality of layer plates to move closer to each other, so as to pressurize the battery cells clamped in the pallet; after the push plate moves away from the baffle, it drives the plurality of layer plates to move away from each other, so as to decompress the battery cells clamped in the pallet; the second gear assembly is transmission-connected to the first gear assembly, one end of the guide rod is connected to the second gear assembly, and the other end of the guide rod passes through the plurality of layer plates in sequence, and the second gear assembly is used to adjust the spacing between the plurality of guide rods; A power supply component is installed on the side of the hot pressing and chemical forming machine. The power supply component includes a power box and a power module. The power module is installed in the power box. The power module is used to supply power to the hot pressing and chemical forming machine.

2. The hot pressing and chemical forming machine according to claim 1, characterized in that: The first gear assembly includes a driving gear, a driven gear, an adjusting gear, a screw transmission gear and a screw seat, the driving gear is transmission-connected with the servo drive device, the driven gear is meshingly transmission-connected with the driving gear, the adjusting gear is meshingly transmission-connected with the driven gear, and the screw transmission gear is meshingly transmission-connected with the adjusting gear; the screw seat is fixedly connected with the screw transmission gear by bolts; a nut is provided on the push plate, one end of the screw is mounted on the screw seat, and the other end of the screw is threaded through the nut and is rotatably connected to the baffle.

3. The hot pressing and chemical forming machine according to claim 2, characterized in that: The power system includes four guide rods, and mounting seats are respectively provided on the left and right sides of the layer plate, and each of the mounting seats is respectively provided with a through hole on the upper and lower sides, and the through holes correspond to the guide rods respectively; the second gear assembly includes a pinion, a rack, a slide bar and a spacing adjustment plate, and the rack and the slide bar extend along the length direction of the layer plate; the pinion is transmission-connected with the adjustment gear, and the rack is meshingly transmission-connected with the pinion, and the spacing adjustment plate is slidably connected with the slide bar and fixedly connected with the rack; one end of each guide rod passes through the through hole in turn, and the other end of each guide rod is fixedly connected with the spacing adjustment plate.

4. The hot pressing and chemical forming machine according to claim 3, characterized in that: The heating assembly includes a PCB board mechanism and a heating element, wherein the heating element is arranged in the layer plate, and the heating element is used to heat the battery cells clamped in the support plate, and the PCB board mechanism is arranged on both sides of the layer plate, and the PCB board mechanism includes a PCB board, and the PCB board is installed on the mounting seat and is used to electrically connect with the tabs of the battery cells clamped in the support plate.

5. The hot pressing and chemical forming machine according to claim 4, characterized in that: The PCB board mechanism also includes a conductive plate, and the conductive plate and the PCB board are respectively arranged on both sides of the mounting seat; an elastic component is provided between the conductive plate and the mounting seat, and one end of the elastic component is connected to the mounting seat; the other end of the elastic component is connected to the conductive plate, and the elastic component is used to provide an elastic stress that drives the conductive plate away from the mounting seat; the conductive plate is used to contact the pole ear of the battery cell clamped in the pallet after the battery cell clamped in the pallet is clamped in the pallet.

6. The hot pressing and chemical forming machine according to claim 3, characterized in that: The mounting seat is provided with a through-through groove, and the side of the layer plate can be slidably connected in the through-through groove; the part of the side of the layer plate that passes through the through-through groove is provided with a guide seat in a detachable manner, and the guide seat is provided with a guide hole; the power system also includes a guide rod, and the two ends of the guide rod are connected to the two ends of the mounting frame; the guide rod passes through the guide holes on the guide seats of multiple layer plates in turn.

7. The hot pressing and chemical forming machine according to claim 1, characterized in that: The power system also includes a guide chain, one end of which is connected to the baffle, and the other end of which is connected to the push plate. Positioning pins are provided on the layer plates, and the positioning pins of each layer plate are respectively inserted into each link of the guide chain.

8. The hot pressing and chemical forming machine according to claim 1, characterized in that: The hot pressing and chemical forming machine also includes a wiring frame and a power line. The wiring frame includes a first wiring frame segment and a second wiring frame segment. The first wiring frame segment extends along the arrangement direction of the multiple layer boards; the second wiring frame segment extends along the height direction of the hot pressing and chemical forming machine to the wiring entrance of the power box; the power line is passed through the first wiring frame segment and the second wiring frame segment.

9. The hot pressing and chemical forming machine according to claim 1, characterized in that: The layer plate is provided with a heating wire and a heat-conducting layer, and the heating wire coil is arranged in the layer plate; the heat-conducting layer covers the outside of the heating wire and is used for contacting with the supporting plate.

10. A method for controlling the use of hot pressing, characterized in that: A method for forming a battery cell using the hot pressing and forming integrated machine as described in any one of claims 1 to 9, Step 1: Press the power button on the equipment, the control system will be reset and the operation panel of the equipment will show that it is ready for production. The second step is to transfer the cells of the polymer soft-pack power battery to the business card paper tray between the multiple layers; Step 3: Use the cell detection component to determine the placement of the cells in the tray to avoid problems such as misalignment of the left and right sides of the cells, excessive height of the upper surface, and missing clamping; Step 4: Start the formation command, and the heating component of the equipment starts to heat the battery cell. When the temperature of the battery cell reaches the set value, the driving gear device of the power system starts to operate, and the rotational torque is transmitted to the screw rod. The screw rod drives the push plate to close the layer plate and pressurize the battery cells clamped in each pallet. Step 5: When the pressure value reaches the set value, the power supply assembly starts to charge and discharge the battery cells clamped in the pallet; Step 6. After the formation is completed, open the layer plate and take out the battery cells clamped in each tray.

Images