Extrusion device for processing electrode plate of lithium battery

Abstract

The invention relates to the field of lithium battery processing, and particularly discloses a lithium battery electrode plate processing extrusion device which comprises a bearing plate, a conveying mechanism used for conveying an electrode plate coiled material is arranged on the bearing plate, a supporting frame is arranged on the bearing plate, and a hot pressing assembly used for conducting hot pressing on the electrode plate coiled material is arranged on the supporting frame. The hot pressing assembly is provided with a power connection assembly connected with a circuit. According to the electrode plate hot-pressing device, hot pressing of an electrode plate coiled material can be achieved, the hot-pressing assembly can be fed back according to the output temperature difference of the electrode plate hot-pressing device, the output temperature of the hot-pressing assembly is controlled within a normal ideal range, and corresponding cooling temperature adjustment can be conducted after electrode plates are hot-pressed, so that the electrode plates are conveyed to the next working procedure at the normal temperature; the fluidity of the electrode plate coiled material is improved, the densification degree of the material is improved, the density and uniformity of the electrode plate are improved, the quality of the electrode plate is improved, the consistency of the lithium battery is improved, and the overall performance of the lithium battery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery processing, and in particular to an extrusion device for processing an electrode sheet of a lithium battery. Background Art

[0002] Lithium battery electrode sheets are one of the important components of lithium-ion batteries, including positive and negative electrode sheets. During production, electrode sheets usually need to go through slurry preparation, coating, drying, extrusion and cutting, etc. The purpose of extrusion or pressing is to make the electrode material more compact, reduce porosity, increase the surface density and thickness consistency of the electrode, and thus improve the performance of the battery. In the production process of lithium batteries, the quality of the electrode sheet directly affects the key performance indicators of the battery such as safety, energy density, and cycle life. Therefore, the production of electrode sheets is particularly important.

[0003] In the existing patent CN220041903U, a capacitive lithium battery positive electrode sheet processing device is disclosed, including a rolling assembly, the rolling assembly includes a third motor, the output shaft of the third motor is fixedly connected to a second pulley, the surface of the second pulley is connected to a first pulley through a belt, one end of the first pulley is fixedly connected to a second gear, the surface of the second gear is meshed with a first gear, one end of the second gear is fixedly connected to a second heating roller, and one end of the first gear is fixedly connected to a first heating roller. The utility model drives the second pulley to rotate by the third motor, the second pulley drives the first pulley to rotate through the belt transmission, the first pulley drives the second gear to rotate, the second gear drives the second heating roller to rotate, the first gear drives the first heating roller to rotate, and the second heating roller and the first heating roller are squeezed against each other to achieve the purpose of pressing the electrode sheet coating.

[0004] In the above structure, the purpose of extrusion of the electrode sheet coating can be achieved, but the temperature is not controlled during the hot pressing of the electrode sheet coil. When the temperature is low, the flow of the electrode material becomes poor, which will lead to insufficient densification of the material during the pressing process and a large porosity, thereby affecting the density and uniformity of the electrode sheet. When the temperature is too high, it may cause thermal decomposition or chemical reaction of the material and the binder, resulting in a decrease in material performance, affecting the quality of the electrode sheet, affecting the consistency of the lithium battery, and reducing the overall performance of the lithium battery.

[0005] Therefore, how to provide an extrusion device for processing the electrode sheet of a lithium battery is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0006] One object of the present invention is to provide an extrusion device for processing an electrode sheet of a lithium battery. The extrusion device for processing an electrode sheet of a lithium battery described in the present invention comprises a carrier plate, a conveying mechanism for conveying an electrode sheet coil is arranged on the carrier plate, a support frame is arranged on the carrier plate, a hot pressing assembly for hot pressing the electrode sheet coil is arranged on the support frame, and a power connection assembly for connecting a circuit is arranged on the hot pressing assembly;

[0007] The carrier plate is provided with a temperature measuring component for detecting the output temperature of the hot pressing component, the support frame is provided with a pushing component connected to the temperature measuring component, the support frame is provided with an adjusting component connected to the pushing component, and the adjusting component is electrically connected to the power connection component;

[0008] The carrier plate is provided with a support plate, the support plate is provided with a cooling assembly for cooling the electrode sheet coil, the support plate is provided with an attraction assembly electrically connected to the adjustment assembly, and a transmission assembly is provided between the attraction assembly and the cooling assembly;

[0009] Among them, when the temperature of the hot pressing component increases, the regulating component increases the resistance in the circuit, forcing the current in the circuit to decrease, thereby causing the temperature of the hot pressing component to drop. At the same time, the attraction component moves, causing the cooling component to approach the electrode sheet coil, causing the electrode sheet to cool quickly.

[0010] Preferably, the hot pressing assembly includes a conductive rotating rod 1 and a conductive rotating rod 2 connected to the support frame by bearings, and a hot pressing roller is fixedly sleeved on the conductive rotating rod 1 and the conductive rotating rod 2, and the gap between the two hot pressing rollers is the thickness of the electrode sheet coil, and a heating resistance wire is installed in the hot pressing roller, and a driving gear is fixedly sleeved on the conductive rotating rod 1, and a driven gear meshing with the driving gear is fixedly sleeved on the conductive rotating rod 2.

[0011] Preferably, the conveying mechanism includes a motor mounted on the support frame, the conductive rotating rod is connected to the output shaft of the motor, the bearing on the supporting plate is connected to a conveying shaft, a conveying roller is fixedly sleeved on the conveying shaft, two of the conveying rollers and the conductive rotating rod are fixedly sleeved with pulleys, and the three pulleys are connected by belt transmission.

[0012] Preferably, the power connection assembly includes a conductive ring fixedly mounted on the conductive rotating rod 1 and the conductive rotating rod 2, the support frame is provided with a mounting rod, the mounting rod is provided with a conductive brush matched with the conductive ring, and the conductive brush is connected to a conductive contact 1.

[0013] Preferably, the pushing assembly comprises a cylinder arranged on the supporting frame, the cylinder is filled with gas, a piston is arranged in the cylinder, a pushing rod passing through the cylinder is arranged on the piston, and the adjusting assembly is arranged on the pushing rod.

[0014] Preferably, the temperature measuring assembly includes a support rod arranged on the supporting plate, a heat conducting plate is arranged on the support rod, a temperature measuring rod for measuring the output temperature of the hot pressing roller is connected between the two heat conducting plates, a heat conducting rod passing through the cylinder is connected to the heat conducting plate, an expansion airbag is connected to the heat conducting rod, and the expansion airbag is located inside the cylinder.

[0015] Preferably, the adjustment component includes a resistor bar arranged on the support frame, a conductive adjustment ring is arranged on the push rod, the resistor bar passes through the conductive adjustment ring, and a conductive contact 2 is arranged on the conductive adjustment ring.

[0016] Preferably, the cooling assembly includes two refrigeration plates slidably arranged on the support plate, semiconductor refrigeration plates are installed in the refrigeration plates, and ears passing through the support plates are provided on the refrigeration plates. The bearings on the support plates are connected with threaded rods, and the two ends of the threaded rods are opposite threaded structures. The two ends of the threaded rods are respectively threaded through the two ears.

[0017] Preferably, the transmission assembly comprises a slider slidably arranged on the support plate, the slider is provided with a spur rack, and a rotating gear meshing with the spur rack is fixedly sleeved on the threaded rod.

[0018] Preferably, the attraction component includes an electromagnet arranged on the support plate, two of the electromagnets are connected in series in the circuit, a magnet stone matching the electromagnet is provided on the slider, and the two electromagnets, the power supply, the conductive contact 2, the conductive rotating rod 2 and the conductive rotating rod 1 are connected in series in the circuit in sequence.

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention uses a conveying mechanism to convey the electrode sheet coil from the previous process to the hot pressing assembly, and the hot pressing assembly performs hot pressing on the electrode sheet coil. After the hot pressing is completed, the conveying mechanism is used to convey the electrode sheet coil to the next process for processing. During the hot pressing process, the temperature needs to be adjusted, and the hot pressing assembly, the power connection assembly, the adjustment assembly, the suction assembly and the power supply are electrically connected, and the power supply is turned on to form a series connection. When the electrode sheet coil passes through the hot pressing assembly, the power connection assembly is powered, which forces the hot pressing assembly to generate heat and have a certain temperature. At the same time, the hot pressing assembly squeezes or presses the electrode sheet, thereby forming a hot pressing action of the hot pressing assembly on the electrode sheet coil. When the temperature exceeds a certain value, the temperature measuring component will detect the output temperature of the hot pressing component, and the temperature measuring component will cause the pushing component to act, so that the pushing component forces the adjusting component to move, so that the adjusting component increases its own resistance value, thereby reducing the current in the circuit. At this time, the heat generated by the hot pressing component decreases, and the temperature drops until the temperature drops to the ideal temperature range. Since the temperature is high when the hot pressing component is hot pressing the electrode sheet, it is difficult to cool it quickly. At the same time, the adjusting component drives the attracting component to move, and the attracting component drives the transmission component to move, so that the cooling components move close to each other, so that the cooling components are close to the electrode sheet coil, so that the cooling components can quickly cool the electrode sheet. When the temperature is lower than a certain value, the temperature measuring component will detect the output temperature of the hot pressing component, and the temperature measuring component will cause the pushing component to reversely move, so that the pushing component forces the adjusting component to reversely move, so that the adjusting component reduces its own resistance value, thereby increasing the current in the circuit. At this time, the heat generated by the hot pressing component increases, and the temperature rises until the temperature rises to the ideal temperature range. Since the temperature is relatively low when the hot pressing component is hot pressing the electrode sheet, the adjusting component drives the attracting component to move in the opposite direction, and the attracting component drives the transmission component to move, so that the cooling components move away from each other, causing the cooling components to move away from each other. The parts are away from the electrode sheet coil, so that the cooling component slowly cools down the electrode sheet to form a normal temperature state; in summary, the extrusion device for processing the electrode sheet of a lithium battery of the present application can realize the hot pressing of the electrode sheet coil, can feedback to the hot pressing component according to its own output temperature difference, and control the output temperature of the hot pressing component within the normal ideal range, and can adjust the corresponding cooling temperature of the electrode sheet after hot pressing, so that the electrode sheet is transmitted to the next process at normal temperature, thereby improving the fluidity of the electrode sheet coil, improving the densification degree of the material, improving the density and uniformity of the electrode sheet, improving the quality of the electrode sheet, improving the consistency of the lithium battery, and improving the overall performance of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional structure entity diagram of the present invention;

[0023] Figure 2 It is a structural entity diagram of the transmission mechanism of the present invention;

[0024] Figure 3 It is a partial structural entity diagram of the present invention;

[0025] Figure 4 It is a structural entity diagram of the temperature measurement component of the present invention;

[0026] Figure 5 A structural entity diagram of the regulating assembly of the present invention;

[0027] Figure 6 It is a structural entity diagram of the hot pressing assembly of the present invention;

[0028] Figure 7 It is a structural entity diagram of the power connection assembly of the present invention;

[0029] Figure 8 A diagram showing the positional relationship between the cooling component and the suction component of the present invention;

[0030] Fig. 9 For the present invention Figure 8 The enlarged view of point A in the middle;

[0031] Fig.10 It is a structural entity diagram of the cooling assembly of the present invention.

[0032] In the figure: 1, bearing plate; 2, transmission mechanism; 201, motor; 202, transmission shaft; 203, transmission roller; 204, pulley; 205, belt; 3, support frame; 4, hot pressing assembly; 401, conductive rotating rod 1; 402, conductive rotating rod 2; 403, hot pressing roller; 404, heating resistance wire; 405, driving gear; 406, driven gear; 5, power connection assembly; 501, conductive ring; 502, mounting rod; 503, conductive brush; 504, conductive contact 1; 6, temperature measuring assembly; 601, support rod; 602, heat conducting plate; 60 3. Temperature measuring rod; 604. Heat conducting rod; 605. Inflatable airbag; 7. Pushing assembly; 701. Cylinder; 702. Piston; 703. Pushing rod; 8. Adjusting assembly; 801. Resistance bar; 802. Conductive adjusting ring; 803. Conductive contact 2; 9. Support plate; 10. Cooling assembly; 1001. Refrigeration plate; 1002. Hanging ear; 1003. Threaded rod; 11. Attracting assembly; 1101. Electromagnet; 1102. Magnet stone; 12. Transmission assembly; 1201. Slider; 1202. Spur rack; 1203. Rotating gear. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] Embodiment 1:

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention comprises a carrier plate 1, a conveying mechanism 2 for conveying an electrode sheet coil is arranged on the carrier plate 1, a support frame 3 is arranged on the carrier plate 1, a hot pressing assembly 4 for hot pressing the electrode sheet coil is arranged on the support frame 3, and a power connection assembly 5 for connecting a circuit is arranged on the hot pressing assembly 4;

[0036] The bearing plate 1 is provided with a temperature measuring component 6 for detecting the output temperature of the hot pressing component 4, the support frame 3 is provided with a pushing component 7 connected to the temperature measuring component 6, the support frame 3 is provided with an adjusting component 8 connected to the pushing component 7, and the adjusting component 8 is electrically connected to the power connection component 5;

[0037] A support plate 9 is provided on the carrier plate 1, a cooling assembly 10 for cooling the electrode sheet coil is provided on the support plate 9, an attraction assembly 11 electrically connected to the adjustment assembly 8 is provided on the support plate 9, and a transmission assembly 12 is provided between the attraction assembly 11 and the cooling assembly 10;

[0038] Among them, when the temperature of the hot pressing component 4 increases, the regulating component 8 increases the resistance in the circuit, forcing the current in the circuit to decrease, thereby causing the temperature of the hot pressing component 4 to drop, and at the same time, the attracting component 11 moves, causing the cooling component 10 to approach the electrode sheet coil, causing the electrode sheet to cool quickly.

[0039] Working principle: The electrode sheet coil is transferred from the previous process to the hot pressing assembly 4 by the conveying mechanism 2, and the electrode sheet coil is hot pressed by the hot pressing assembly 4. After the hot pressing is completed, the electrode sheet coil is transferred to the next process for processing by the conveying mechanism 2. During the hot pressing process, the temperature needs to be adjusted. The hot pressing assembly 4, the power connection assembly 5, the adjustment assembly 8, the suction assembly 11 and the power supply are electrically connected, and the power supply is turned on to form a series connection. When the electrode sheet coil passes through the hot pressing assembly 4, the power connection assembly 5 is powered, which forces the hot pressing assembly 4 to generate heat and have a certain temperature. At the same time, the hot pressing assembly 4 squeezes or presses the electrode sheet, thereby forming a hot pressing action of the hot pressing assembly 4 on the electrode sheet coil. When the temperature exceeds a certain value, the temperature measuring component 6 will detect the output temperature of the hot pressing component 4, and the temperature measuring component 6 will cause the pushing component 7 to act, so that the pushing component 7 forces the adjusting component 8 to move, so that the adjusting component 8 increases its own resistance value, thereby reducing the current in the circuit. At this time, the heat generated by the hot pressing component 4 decreases, and the temperature drops until the temperature drops to the ideal temperature range. Since the temperature is high when the hot pressing component 4 hot presses the electrode sheet, it is difficult to cool it quickly. At the same time, the adjusting component 8 drives the attraction component 11 to move, and the attraction component 11 drives the transmission component 12 to move, so that the cooling components 10 move closer to each other, so that the cooling components 10 are close to the electrode sheet coil, so that the cooling components 10 The electrode sheet is cooled down quickly so that the electrode sheet coil is at room temperature when entering the next process; when the temperature is lower than a certain value, the temperature measuring component 6 will detect the output temperature of the hot pressing component 4, and the temperature measuring component 6 will cause the pushing component 7 to reversely move, so that the pushing component 7 forces the adjusting component 8 to reversely move, so that the adjusting component 8 reduces its own resistance value, thereby increasing the current in the circuit. At this time, the heat generated by the hot pressing component 4 increases, and the temperature rises until the temperature rises to the ideal temperature range. Since the temperature is relatively low when the hot pressing component 4 is hot pressing the electrode sheet, the adjusting component 8 drives the attraction component 11 to reversely move, and the attraction component 11 drives the transmission component 12 to move, so that the cooling component 10 interacts with each other. The movement away makes the cooling component 10 away from the electrode sheet coil, so that the cooling component 10 slowly cools down the electrode sheet to form a normal temperature state; in summary, the extrusion device for processing the electrode sheet of a lithium battery of the present application can realize the hot pressing of the electrode sheet coil, can feedback to the hot pressing component 4 according to its own output temperature difference, and control the output temperature of the hot pressing component 4 within the normal ideal range, and can adjust the corresponding cooling temperature of the electrode sheet after hot pressing, so that the electrode sheet is transmitted to the next process at normal temperature, thereby improving the fluidity of the electrode sheet coil, improving the densification degree of the material, improving the density and uniformity of the electrode sheet, improving the quality of the electrode sheet, improving the consistency of the lithium battery, and improving the overall performance of the lithium battery.

[0040] Embodiment 2:

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the hot pressing assembly 4 includes a conductive rotating rod 1 401 and a conductive rotating rod 2 402 which are connected to a support frame 3 by a bearing, and a hot pressing roller 403 is fixedly sleeved on the conductive rotating rod 1 401 and the conductive rotating rod 2 402, and a gap between the two hot pressing rollers 403 is the thickness of the electrode sheet coil, and a heating resistor wire 404 is installed in the hot pressing roller 403, and a driving gear 405 is fixedly sleeved on the conductive rotating rod 1 401, and a driven gear 406 meshing with the driving gear 405 is fixedly sleeved on the conductive rotating rod 2 402.

[0042] like Figure 1 and Figure 2 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, a conveying mechanism 2 includes a motor 201 mounted on a support frame 3, a conductive rotating rod 401 connected to the output shaft of the motor 201, a conveying shaft 202 is connected to a bearing on a carrier plate 1, a conveying roller 203 is fixedly sleeved on the conveying shaft 202, two conveying rollers 203 and the conductive rotating rod 401 are fixedly sleeved with pulleys 204, and the three pulleys 204 are connected through a belt 205 for transmission.

[0043] like Figure 6 and Figure 7 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the power connection component 5 includes a conductive ring 501 fixedly mounted on a conductive rotating rod 1 401 and a conductive rotating rod 2 402, a mounting rod 502 is arranged on the support frame 3, a conductive brush 503 matched with the conductive ring 501 is arranged on the mounting rod 502, and a conductive contact 1 504 is connected to the conductive brush 503.

[0044] like Figure 1 , Figure 3 and Figure 5 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the pushing component 7 includes a cylinder 701 arranged on a support frame 3, the cylinder 701 is filled with gas, a piston 702 is arranged in the cylinder 701, a pushing rod 703 penetrating the cylinder 701 is arranged on the piston 702, and the adjusting component 8 is arranged on the pushing rod 703.

[0045] like Figure 3 and Figure 4As shown, in an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the temperature measuring component 6 includes a support rod 601 arranged on a supporting plate 1, a heat conducting plate 602 is arranged on the support rod 601, a temperature measuring rod 603 for measuring the output temperature of a hot pressing roller 403 is connected between the two heat conducting plates 602, a heat conducting rod 604 penetrating a cylinder 701 is connected to the heat conducting plate 602, an expansion airbag 605 is connected to the heat conducting rod 604, and the expansion airbag 605 is located inside the cylinder 701.

[0046] like Figure 1 , Figure 3 and Figure 5 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the adjustment component 8 includes a resistor bar 801 arranged on a support frame 3, a conductive adjustment ring 802 is arranged on a push rod 703, the resistor bar 801 passes through the conductive adjustment ring 802, and a conductive contact 2 803 is arranged on the conductive adjustment ring 802.

[0047] like Figure 1 , Figure 3 , Figure 8 , Fig. 9 and Fig.10 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, a cooling component 10 includes two refrigeration plates 1001 slidably arranged on a support plate 9, semiconductor refrigeration plates are installed in the refrigeration plates 1001, and ears 1002 penetrating the support plate 9 are arranged on the refrigeration plates 1001, and a bearing on the support plate 9 is connected to a threaded rod 1003, and both ends of the threaded rod 1003 are opposite threaded structures, and both ends of the threaded rod 1003 are threadedly penetrated through the two ears 1002 respectively.

[0048] like Figure 8 and Fig. 9 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the transmission assembly 12 includes a slider 1201 slidably set on a support plate 9, a spur rack 1202 is set on the slider 1201, and a rotating gear 1203 meshing with the spur rack 1202 is fixedly sleeved on the threaded rod 1003.

[0049] like Figure 8 and Fig. 9 As shown, an extrusion device for processing an electrode sheet of a lithium battery of the present invention, the attraction component 11 includes an electromagnet 1101 arranged on a support plate 9, two electromagnets 1101 are connected in series in a circuit, a magnet stone 1102 adapted to the electromagnet 1101 is arranged on a slider 1201, and the two electromagnets 1101, a power source, a conductive contact 803, a conductive rotating rod 402 and a conductive rotating rod 401 are connected in series in the circuit in sequence.

[0050] Working principle: turn on the power supply, and sequentially connect two electromagnets 1101, a joint of the power supply, the second conductive contact 803, one end of the resistor bar 801, a conductive contact 1 504 at the second conductive rotating rod 402, the second conductive rotating rod 402, the heating resistor wire 404, another conductive contact 1 504 at the second conductive rotating rod 402, a conductive contact 1 504 at the first conductive rotating rod 401, the first conductive rotating rod 401, the heating resistor wire 404, another conductive contact 1 504 at the first conductive rotating rod 401, and another joint of the power supply in series in the circuit to form a closed series circuit;

[0051] The motor 201 is started, and the output shaft of the motor 201 rotates to drive the conductive rotating rod 401 to rotate, and the conductive rotating rod 401 drives the pulley 204 to rotate, and the conveying shaft 202 rotates through the action of the belt 205, and the conveying shaft 202 drives the conveying roller 203 to rotate. Since the electrode sheet coil is wound on the conveying roller 203, the electrode sheet is continuously conveyed, so that the conveying roller 203 conveys the electrode sheet coil from the previous process to the hot pressing roller 403, and the electrode sheet coil passes between the two hot pressing rollers 403 to achieve hot pressing of the electrode sheet by the hot pressing roller 403. After the hot pressing is completed, the electrode sheet coil is conveyed to the next process for processing by the conveying roller 203, completing the entire process processing and the connection between the processes;

[0052] During the conveying process of the electrode sheet coil, the output shaft of the motor 201 rotates to drive the conductive rotating rod 1 401 to rotate, and the conductive rotating rod 1 401 drives the hot pressing roller 403 to rotate. At the same time, the conductive rotating rod 1 401 rotates to drive the driving gear 405 to rotate, forcing the driven gear 406 to rotate, so that the conductive rotating rod 2 402 rotates, and the conductive rotating rod 2 402 drives the hot pressing roller 403 to rotate. The two hot pressing rollers 403 rotate relative to each other at the same time to squeeze the electrode sheet coil and convey the electrode sheet coil. During squeezing, since the conductive brush 503 is always in contact with the conductive ring 501, when the power is turned on, the current passes through the conductive contact 1 504, the conductive brush 503 and the conductive ring 501 to the conductive rotating rod 1 401 and the conductive rotating rod 2 402, so that the heating resistance wire 404 has current and generates heat, forcing the heating resistance wire 404 to heat the hot pressing roller 403, thereby realizing the hot pressing effect on the electrode sheet;

[0053] During the hot pressing process, since the heat generated by the heating resistor wire 404 will affect the temperature of the electrode sheet coil, it is necessary to control the output temperature of the hot pressing roller 403. When the temperature exceeds a certain value, the temperature rises relatively, causing the output temperature at the hot pressing roller 403 to rise. At this time, the temperature measuring rod 603 will detect the temperature value and transfer the temperature to the expansion airbag 605 through the heat conducting rod 604. Due to the thermal expansion and contraction effect of the expansion airbag 605, when the temperature reaches this temperature, the expansion airbag 605 expands, causing the volume in the cylinder 701 to decrease, the gas to compress, and the pressure to increase, causing the piston 702 to move. The piston 702 drives the push rod 703 to move, so that the push rod 703 drives the conductive adjustment ring 802 to move on the resistor bar 801, so that the resistance value of the resistor bar 801 increases, and the current in the circuit decreases. At this time, the heat generated by the heating resistor wire 404 decreases, causing the output temperature of the hot pressing roller 403 to decrease until the temperature drops to the ideal value. Within the temperature range; since the hot pressing roller 403 heats the electrode sheet, causing a high temperature, it is difficult for the electrode sheet coil to cool quickly after passing through the two hot pressing rollers 403. Since the electromagnet 1101 is connected in series with the resistor bar 801, when the current decreases, the attraction of the electromagnet 1101 to the magnet stone 1102 decreases, causing the magnet stone 1102 to move away from the electromagnet 1101, and the magnet stone 1102 drives the slider 1201 to move, and the slider 1201 drives the spur rack 1202 to move, causing the rotating gear 1203 to rotate, and the rotating gear 1203 drives the threaded rod 1003 to rotate. Under the action of the support plate 9, the two hanging ears 1002 move close to each other, forcing the two refrigeration plates 1001 to move close to each other, so that the two refrigeration plates 1001 are close to the electrode sheet coil, so that the semiconductor refrigeration plate in the refrigeration plate 1001 quickly cools the electrode sheet, so that the electrode sheet coil enters the next process and forms a normal temperature state;

[0054] When the temperature is lower than a certain value, the temperature drops relatively, that is, the temperature is higher than the normal temperature but lower than the ideal hot pressing temperature range, so that the output temperature at the hot pressing roller 403 drops. At this time, the temperature measuring rod 603 will detect the temperature value and transfer the temperature to the expansion airbag 605 through the heat conducting rod 604. Due to the thermal expansion and contraction effect of the expansion airbag 605, when the temperature drops, the expansion airbag 605 contracts, so that the volume in the cylinder 701 increases and the pressure decreases, so that the piston 702 moves in the opposite direction, and the piston 702 drives the push rod 703 to move in the opposite direction, so that the push rod 703 drives the conductive adjustment ring 802 to move in the opposite direction on the resistor bar 801, so that the resistance value of the resistor bar 801 decreases, and the current in the circuit increases. At this time, the heat generated by the heating resistor 404 increases, so that the output temperature of the hot pressing roller 403 increases until the temperature rises to the ideal temperature range; because the hot pressing roller 403 hot presses the electrode sheet When the electrode sheet coil passes through the two hot pressing rollers 403, it needs to be cooled. Since the electromagnet 1101 is connected in series with the resistor bar 801, when the current increases, the attraction of the electromagnet 1101 to the magnet stone 1102 increases, causing the magnet stone 1102 to move closer to the electromagnet 1101, and the magnet stone 1102 drives the slider 1201 to move, and the slider 1201 drives the spur rack 1202 to move in the opposite direction, causing the rotating gear 1203 to rotate in the opposite direction, and the rotating gear 1203 drives the threaded rod 1003 to rotate in the opposite direction. Under the action of the support plate 9, the two hanging ears 1002 move away from each other, forcing the two refrigeration plates 1001 to move away from each other, so that the two refrigeration plates 1001 are away from the electrode sheet coil, so that the semiconductor refrigeration plate in the refrigeration plate 1001 slowly cools down the electrode sheet, so that the electrode sheet coil enters the next process at room temperature.

[0055] The setting of the conveying mechanism 2 can provide power to realize the conveying effect on the electrode sheet coil, so that the electrode sheet can be processed in various processes, and at the same time provide power to the hot pressing component 4, so that the conductive rotating rod 401 rotates, so that the electrode sheet is smoothly conveyed, and the hot pressing component 4 can realize the continuous hot pressing effect of the electrode sheet coil; the setting of the hot pressing component 4 can realize the pressing or extrusion effect on the electrode sheet coil, and at the same time can heat the electrode sheet coil to achieve the hot pressing effect, the setting of the driving gear 405 and the driven gear 406 can realize the conveying effect of the two hot pressing rollers 403 on the electrode sheet in the same direction, so that the electrode sheet coil is continuously conveyed, and the rationality of the device is improved; The arrangement of the electrical component 5 enables the conductive rotating rod 1 401 and the conductive rotating rod 2 402 to be connected to the circuit to form a series connection. At the same time, the arrangement of the conductive ring 501 and the conductive brush 503 can ensure that the current is connected when the conductive rotating rod 1 401 and the conductive rotating rod 2 402 rotate, so that the current is smoothly conducted, and the heating resistor wire 404 continuously generates heat, thereby improving the flexibility of the device; the arrangement of the temperature measuring component 6 can detect the temperature. When the temperature exceeds a certain value, the expansion airbag 605 expands. For example, the expansion temperature of the expansion airbag 605 is set to the middle value of the ideal output temperature range of the hot pressing roller 403, thereby realizing the pushing effect on the pushing component 7, and the heat-conducting rod 6 04 can transfer heat, and a heat insulating member is arranged on the heat-conducting rod 604 to reduce heat loss; the setting of the pushing component 7 can utilize the function of the expansion airbag 605 to control the movement of the pushing rod 703, realize the regulating function of the adjusting component 8, realize the transfer effect of the heat effect, and use the temperature difference to control the movement position of the pushing rod 703; the setting of the adjusting component 8 can utilize the real adjustment of the resistance of the resistance bar 801 to adjust the current size in the device circuit, thereby realizing the regulation of the heat generation of the heating resistance wire 404, and at the same time, it can adjust the attraction of the electromagnet 1101, and adjust the hot pressing temperature and the transmission temperature of the electrode sheet coil from two directions, thereby realizing Control of the device temperature; the setting of the attraction component 11 can realize the control of the position of the spur rack 1202, so that the spur rack 1202 is stuck at a certain place, and at the same time, the attraction of the electromagnet 1101 can be controlled by the change of the current, so that the position of the magnet stone 1102 changes, and the adjustment effect of the transmission component 12 is achieved; the setting of the transmission component 12 can convert the movement of the magnet stone 1102 into the rotation of the rotating gear 1203, so that the threaded rod 1003 rotates, the action of transmitting the motion, so that the effect of the attraction is converted into the rotation effect of the threaded rod 1003, and the temperature difference principle is cleverly used to achieve the transmission effect of the attraction;The setting of the cooling assembly 10 can achieve the control effect of the transmission temperature of the electrode sheet coil, and prevent the electrode sheet coil from being easily disturbed by the outside world after the electrode sheet is affected by the temperature. The cooling electrode sheet can improve the stability of the electrode sheet. At the same time, the distance between the refrigeration plate 1001 and the electrode sheet can be adjusted according to the output temperature of the hot pressing roller 403, so as to achieve the adjustment effect of the refrigeration plate 1001 on the refrigeration effect of the electrode sheet, realize the normal temperature transmission of the electrode sheet, and improve the protection effect on the performance of the electrode sheet coil. ;

[0056] This solution can feedback-adjust the hot pressing component 4 according to the temperature difference, thereby achieving stable hot pressing of the electrode sheet coil within the ideal temperature range. At the same time, according to the output temperature of the hot pressing roller 403, the refrigeration plate 1001 can achieve the cooling and adjustment effect of the electrode sheet after hot pressing, thereby achieving room temperature transmission of the electrode sheet, improving the protection of the performance of the electrode sheet coil, improving the quality of the electrode sheet, improving the consistency of the lithium battery, and improving the overall performance of the lithium battery.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An extrusion device for processing an electrode sheet of a lithium battery, characterized in that: The invention comprises a carrier plate (1), the carrier plate (1) being provided with a conveying mechanism (2) for conveying an electrode sheet coil, the carrier plate (1) being provided with a support frame (3), the support frame (3) being provided with a hot pressing assembly (4) for hot pressing the electrode sheet coil, and the hot pressing assembly (4) being provided with a power connection assembly (5) for connecting a circuit; The carrier plate (1) is provided with a temperature measuring component (6) for detecting the output temperature of the hot pressing component (4); the support frame (3) is provided with a pushing component (7) connected to the temperature measuring component (6); the support frame (3) is provided with an adjusting component (8) connected to the pushing component (7); the adjusting component (8) is electrically connected to the power connection component (5); The carrier plate (1) is provided with a support plate (9), the support plate (9) is provided with a cooling assembly (10) for cooling the electrode sheet coil, the support plate (9) is provided with an attraction assembly (11) electrically connected to the adjustment assembly (8), and a transmission assembly (12) is provided between the attraction assembly (11) and the cooling assembly (10); When the temperature of the hot pressing component (4) increases, the regulating component (8) increases the resistance in the circuit, forcing the current in the circuit to decrease, thereby causing the temperature of the hot pressing component (4) to drop. At the same time, the attracting component (11) moves, causing the cooling component (10) to approach the electrode sheet coil, thereby causing the electrode sheet to cool rapidly.

2. The extrusion device for processing an electrode sheet of a lithium battery according to claim 1, characterized in that: The hot pressing assembly (4) comprises a conductive rotating rod 1 (401) and a conductive rotating rod 2 (402) connected to the support frame (3) by bearings, a hot pressing roller (403) being fixedly sleeved on the conductive rotating rod 1 (401) and the conductive rotating rod 2 (402), a gap between the two hot pressing rollers (403) being the thickness of the electrode sheet coil, a heating resistance wire (404) being installed in the hot pressing roller (403), a driving gear (405) being fixedly sleeved on the conductive rotating rod 1 (401), and a driven gear (406) meshing with the driving gear (405) being fixedly sleeved on the conductive rotating rod 2 (402).

3. The extrusion device for processing an electrode sheet of a lithium battery according to claim 2, characterized in that: The transmission mechanism (2) comprises a motor (201) mounted on the support frame (3); the conductive rotating rod (401) is connected to the output shaft of the motor (201); a transmission shaft (202) is connected to the bearing on the carrier plate (1); a transmission roller (203) is fixedly sleeved on the transmission shaft (202); two transmission rollers (203) and the conductive rotating rod (401) are both fixedly sleeved with pulleys (204); and the three pulleys (204) are connected to each other through a belt (205).

4. The extrusion device for processing an electrode sheet of a lithium battery according to claim 3, characterized in that: The power connection assembly (5) comprises a conductive ring (501) fixedly sleeved on the conductive rotating rod 1 (401) and the conductive rotating rod 2 (402); a mounting rod (502) is arranged on the support frame (3); a conductive brush (503) matched with the conductive ring (501) is arranged on the mounting rod (502); and a conductive contact 1 (504) is connected to the conductive brush (503).

5. The extrusion device for processing an electrode sheet of a lithium battery according to claim 4, characterized in that: The pushing component (7) comprises a cylinder (701) arranged on the support frame (3), the cylinder (701) is filled with gas, a piston (702) is arranged in the cylinder (701), a pushing rod (703) passing through the cylinder (701) is arranged on the piston (702), and the adjusting component (8) is arranged on the pushing rod (703).

6. The extrusion device for processing an electrode sheet of a lithium battery according to claim 5, characterized in that: The temperature measuring component (6) comprises a support rod (601) arranged on the supporting plate (1), a heat conducting plate (602) being arranged on the support rod (601), a temperature measuring rod (603) for measuring the output temperature of the hot pressing roller (403) being connected between the two heat conducting plates (602), a heat conducting rod (604) penetrating the cylinder (701) being connected to the heat conducting plate (602), an expansion airbag (605) being connected to the heat conducting rod (604), and the expansion airbag (605) being located inside the cylinder (701).

7. The extrusion device for processing an electrode sheet of a lithium battery according to claim 6, characterized in that: The adjustment component (8) comprises a resistor bar (801) arranged on the support frame (3), a conductive adjustment ring (802) is arranged on the push rod (703), the resistor bar (801) passes through the conductive adjustment ring (802), and a conductive contact 2 (803) is arranged on the conductive adjustment ring (802).

8. The extrusion device for processing an electrode sheet of a lithium battery according to claim 7, characterized in that: The cooling assembly (10) comprises two refrigeration plates (1001) slidably arranged on the support plate (9), a semiconductor refrigeration plate is installed in the refrigeration plate (1001), a lug (1002) penetrating the support plate (9) is arranged on the refrigeration plate (1001), a bearing on the support plate (9) is connected to a threaded rod (1003), the two ends of the threaded rod (1003) are opposite threaded structures, and the two ends of the threaded rod (1003) are respectively threaded through the two lugs (1002).

9. The extrusion device for processing an electrode sheet of a lithium battery according to claim 8, characterized in that: The transmission assembly (12) comprises a slider (1201) slidably arranged on the support plate (9), a spur rack (1202) being arranged on the slider (1201), and a rotating gear (1203) meshing with the spur rack (1202) being fixedly sleeved on the threaded rod (1003).

10. The extrusion device for processing an electrode sheet of a lithium battery according to claim 9, characterized in that: The attraction component (11) comprises an electromagnet (1101) arranged on the support plate (9), two of the electromagnets (1101) are connected in series in a circuit, a magnet (1102) matching the electromagnet (1101) is arranged on the slider (1201), and the two electromagnets (1101), a power source, the second conductive contact (803), the second conductive rotating rod (402) and the first conductive rotating rod (401) are connected in series in the circuit in sequence.

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