A double-sided synchronous coating and dispensing equipment

Abstract

The present invention discloses a double-sided synchronous coating and dispensing device, which relates to the technical field of lithium battery coating equipment. The device includes a frame and a pole piece body, on which a first coating mechanism, a first dispensing mechanism, a second coating mechanism, and a second dispensing mechanism are integrated. The first coating mechanism includes a coating roller, a die assembly, and a distance adjustment assembly. The die assembly is arranged on the side of the pole piece body away from the coating roller. The die assembly includes an upper die head and a lower die head. A slurry slit is provided between the upper and lower die heads. The slit opening of the slurry slit is arranged toward the surface to be coated of the pole piece body. The slurry slit is used to apply slurry to the surface to be coated of the pole piece body. The distance adjustment assembly is mounted on the upper die head and is used to adjust the gap size of the slurry slit. The device has a high degree of integration, and the thickness of the coating layer can be adjusted by adjusting the size of the slit opening.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery coating equipment, and in particular relates to a double-sided synchronous coating and dispensing equipment. Background Art

[0002] With the development of science and technology, lithium batteries have become the mainstream of power battery development. Lithium batteries are mainly composed of lithium battery pole pieces, electrolytes and diaphragms. Among them, lithium battery pole pieces are prepared by coating active substances on both surfaces of a conductive substrate. Depending on the type of pole piece, the material of the conductive substrate will vary. For example, the positive electrode sheet is prepared by coating a conductive substrate (such as aluminum foil) with an active substance (such as lithium cobalt oxide, cobalt trioxide, etc.), and the negative electrode sheet is prepared by coating a conductive substrate (such as copper foil) with an active substance (such as graphite).

[0003] The double sides of the traditional electrode sheet need to be glued using a separate glue dispensing device after the slurry coating is completed, which means that multiple devices are required to perform the process separately, increasing the equipment cost. At the same time, the conductive substrate of the electrode sheet bypasses multiple devices in sequence, resulting in a longer processing path for the conductive substrate, which limits the production efficiency of the electrode. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-sided synchronous coating and dispensing device with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A double-sided synchronous coating and dispensing device, comprising:

[0007] The frame and the pole piece body are integrated with a first coating mechanism, a first dispensing mechanism, a second coating mechanism and a second dispensing mechanism. Along the conveying direction of the pole piece body, the pole piece body passes through the first coating mechanism, the first dispensing mechanism, the second coating mechanism and the second dispensing mechanism in sequence;

[0008] Among them, the first coating mechanism includes a coating roller, a die assembly and a distance adjustment assembly, the side of the pole piece body away from the surface to be coated is in friction conflict with the coating roller, the die assembly is arranged on the side of the pole piece body away from the coating roller, the die assembly includes an upper die head and a lower die head, the upper die head is connected to the lower die head, and a slurry coating slit is provided between the upper die head and the lower die head, the slit opening of the slurry coating slit is arranged toward the surface to be coated of the pole piece body, the slurry coating slit is used to coat the slurry on the surface to be coated of the pole piece body, the distance adjustment assembly is installed on the upper die head, and the distance adjustment assembly is used to adjust the gap size of the slurry coating slit.

[0009] As a further optimization scheme of the present invention, the upper die head includes an upper nozzle, the lower die head includes a lower nozzle, and a gap opening of a slurry coating slit is formed between the upper nozzle and the lower nozzle. The distance adjustment assembly includes a hydraulic telescopic part, a scraper and a connecting rod. The hydraulic telescopic part is installed on the upper die head, and the output end of the hydraulic telescopic part is fixedly connected to the scraper. The outer end of the scraper is spaced apart from the electrode body, the scraper is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the upper nozzle.

[0010] As a further optimization solution of the present invention, the inner end of the scraper is fixedly connected to a guide rod, which is slidably connected to the upper die head, wherein the sliding direction of the guide rod and the upper die head is consistent with the telescopic direction of the hydraulic telescopic part.

[0011] As a further optimization solution of the present invention, the angle between the spraying direction of the slurry coating slit and the surface of the electrode body facing the lower die head is greater than 90 degrees and less than 170 degrees.

[0012] As a further optimization solution of the present invention, a collecting trough is provided on the side of the lower die head facing the coating roller, and side baffles are fixedly connected to the two ends of the lower die head located at the collecting trough. The upper die heads are arranged in pairs, and the paired upper die heads are symmetrically arranged on both sides of the collecting trough, and the distance adjustment assembly is arranged corresponding to the upper die head;

[0013] Wherein, a discharge trough is provided in the lower die head, and a discharge pipe is provided outside the lower die head, and the discharge pipe is connected with the collecting tank through the discharge trough.

[0014] As a further optimization solution of the present invention, along the conveying direction of the electrode body, the opening size of the gap between the upper nozzle and the lower nozzle located in the front is smaller than the opening size of the gap between the upper nozzle and the lower nozzle located in the rear.

[0015] As a further optimization scheme of the present invention, a feed trough is provided at one end of the lower die head facing the upper die head, a gasket is embedded between the upper die head and the lower die head, the gasket has a material guide groove, the feed trough is connected to the coating slit through the material guide groove, and a feed pipe is provided on the outside of the lower die head, and the feed pipe is connected to the feed trough.

[0016] As a further optimization scheme of the present invention, the electrode body includes multiple coating areas and blank areas located between the coating areas; multiple control valves are provided on the feed pipe, the number of control valves is consistent with the number of coating areas, and the control valves are arranged corresponding to the feed troughs, that is, multiple feed troughs are arranged in parallel.

[0017] As a further optimization scheme of the present invention, a traction assembly is integrated on the frame. Along the conveying direction of the electrode body, the traction assembly is located in front of the first coating mechanism. The traction assembly is used to pull the electrode body to be coated with glue toward the conveying direction.

[0018] As a further optimization scheme of the present invention, a first adjustment component and a second adjustment component are integratedly installed on the frame. Along the conveying direction of the pole piece body, the first adjustment component is located between the traction component and the first coating mechanism, and the second adjustment component is located between the first dispensing mechanism and the second coating mechanism.

[0019] The present invention has at least the following beneficial effects: the device of the present invention integrates a first coating mechanism, a first glue dispensing mechanism, a second coating mechanism, and a second glue dispensing mechanism on a frame, so that the electrode body passes through the first coating mechanism, the first glue dispensing mechanism, the second coating mechanism, and the second glue dispensing mechanism in sequence, so as to perform coating and glue dispensing operations on both sides of the electrode body on one device, thereby solving the problem that the electrode body passes through multiple devices in sequence, resulting in a longer processing path for the electrode body and reduced production efficiency;

[0020] Moreover, the first coating mechanism includes a coating roller, a die assembly and a distance adjustment assembly. The coating roller is bypassed by the pole piece body, so that the coating slit between the upper nozzle and the lower nozzle in the die assembly is tilted to spray the slurry on the surface to be coated of the pole piece body. Under the adjustment of the distance adjustment assembly, the opening size of the coating slit can be adjusted accordingly according to the thickness requirement of the coating layer of the pole piece body, so that the equipment can meet the preparation requirements of coating layers of different thicknesses of the pole piece body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 The present invention Figure 1 Schematic diagram of the front internal structure;

[0023] Figure 3 It is a structural schematic diagram of the first coating mechanism in the present invention;

[0024] Figure 4 It is a partial cross-sectional structural schematic diagram of the first coating mechanism in the present invention;

[0025] Figure 5 This invention Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 It is a structural schematic diagram of the scraper in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the gasket in the present invention;

[0028] Figure 8 It is a schematic diagram of the pole piece body of the present invention.

[0029] In the figure: 1. Frame; 2. First coating mechanism; 3. First dispensing mechanism; 4. Second coating mechanism; 5. Second dispensing mechanism; 6. Traction assembly; 7. First adjustment assembly; 8. Second adjustment assembly; 9. Pole body; 91. Coating area; 92. Blank area; 21. Die assembly; 211. Upper die; 2111. Upper nozzle; 212. Gasket; 2121. Guide trough; 213. Lower die; 2131. Feed trough; 2132. Collecting trough; 2133. Lower nozzle; 22. Discharge trough; 23. Discharge pipe; 24. Feed pipe; 25. Control valve; 26. Side baffle; 27. Distance adjustment assembly; 271. Hydraulic telescopic part; 272. Scraper; 273. Connecting rod; 274. Guide rod; 28. Coating roller. DETAILED DESCRIPTION

[0030] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] See also Figures 1 to 8 The present invention provides a double-sided synchronous coating and dispensing device, comprising:

[0032] The frame 1 and the pole piece body 9 are integrated with the first coating mechanism 2, the first dispensing mechanism 3, the second coating mechanism 4 and the second dispensing mechanism 5. Along the conveying direction of the pole piece body 9, the pole piece body 9 passes through the first coating mechanism 2, the first dispensing mechanism 3, the second coating mechanism 4 and the second dispensing mechanism 5 in sequence. Figure 2 As shown, the electrode body 9 can be processed by a single device of the present invention to realize the simultaneous coating and dispensing process on both sides of the electrode body 9, without the need for multiple devices to be spread out flatly, thus avoiding the long extension path of the electrode body 9 when passing through multiple devices in sequence, thereby improving the production efficiency of the electrode;

[0033] Among them, such as Figure 3 and Figure 4As shown, the first coating mechanism 2 includes a coating roller 28, a die assembly 21 and a distance adjustment assembly 27. The side of the pole piece body 9 away from the surface to be coated is in frictional contact with the coating roller 28. The die assembly 21 is arranged on the side of the pole piece body 9 away from the coating roller 28. The die assembly 21 includes an upper die 211 and a lower die 213. The upper die 211 is connected to the lower die 213, and there is a slurry coating slit between the upper die 211 and the lower die 213. The slit opening of the slurry coating slit is arranged toward the surface to be coated of the pole piece body 9. The slurry coating slit is used to coat the slurry on the surface to be coated of the pole piece body 9. The distance adjustment assembly 27 is installed on the upper die 211. The distance adjustment assembly 27 is used to adjust the gap size of the slurry coating slit.

[0034] For example, please see Figure 4 and Figure 5 The upper die head 211 includes an upper nozzle 2111, and the lower die head 213 includes a lower nozzle 2133. A gap opening of a slurry slit is formed between the upper nozzle 2111 and the lower nozzle 2133. The distance adjustment component 27 includes a hydraulic telescopic part 271, a scraper 272 and a connecting rod 273. The hydraulic telescopic part 271 is installed on the upper die head 211. The output end of the hydraulic telescopic part 271 is fixedly connected to the scraper 272. The outer end of the scraper 272, that is, the end of the scraper 272 close to the coating roller 28 is spaced apart from the electrode body 9. The scraper 272 is used to scrape off excess coating layer on the surface of the electrode body 9. The scraper 272 is rotatably connected to one end of the connecting rod 273, and the other end of the connecting rod 273 is rotatably connected to the upper nozzle 2111.

[0035] It should be noted that according to the nozzle flow formula Among them, Q is the flow rate, A is the nozzle cross-sectional area, P is the pressure, p is the fluid density, when the nozzle is a circular structure, D is the nozzle diameter size. It can be seen that when P is a constant value, the nozzle size is proportional to the flow rate. Therefore, in the above embodiment, the gap size of the coating slit is adjusted by the distance adjustment component 27, so that the thickness of the coating layer of the pole piece body 9 is controlled when the conveying speed of the pole piece body 9 remains unchanged. For example, the distance adjustment component 27 drives the upper nozzle 2111, and when the space between the upper nozzle 2111 and the lower nozzle 2133 is compressed, the size of the coating nozzle formed by the upper nozzle 2111 and the lower nozzle 2133 is reduced. When the pressure P of the injection system is constant, that is, the pressure of the slurry supplied in the die head component 21 is constant, the size of the coating slit between the upper nozzle 2111 and the lower nozzle 2133 is reduced to reduce the flow rate of the slurry, thereby reducing the thickness of the coating layer formed on the surface of the pole piece body 9, thereby improving the coating quality of the pole piece body 9. Moreover, due to the reduction in the gap outlet size of the coating slit, the projected cross-section of the slurry sprayed through the coating slit is reduced, thereby improving the coating uniformity on the pole piece body 9.

[0036] It should be noted that the inner end of the scraper 272 is fixedly connected to a guide rod 274, and the guide rod 274 is slidably connected to the upper die head 211, wherein the sliding direction of the guide rod 274 and the upper die head 211 is consistent with the telescopic direction of the hydraulic telescopic part 271. The guiding constraint of the guide rod 274 ensures that the scraper 272 moves stably inward and outward, avoiding tilting due to the large length of the scraper 272.

[0037] It should be noted that, since the electrode body 9 passes by the coating roller 28, Figure 4 As shown, the contact surface between the electrode body 9 and the coating roller 28 is an arc-shaped curved surface. The slurry sprayed from the coating slit impacts the arc surface, causing the slurry to splash to a certain extent. Therefore, Figure 4 and Figure 5 As shown, by making the angle between the spraying direction of the coating slit and the surface of the side of the pole piece body 9 facing the lower die head 213 greater than 90 degrees and less than 170 degrees, the impact force on the pole piece body 9 is reduced when the slurry is sprayed out at the same speed, thereby reducing the splashing of the slurry.

[0038] For example, see Figure 4 and Figure 5 The lower die head 213 is provided with a collecting groove 2132 on the side facing the coating roller 28. Figure 3 As shown, the lower die head 213 is located at both ends of the collecting trough 2132 and is fixedly connected to the side baffles 26, so that the lower end position of the coating roller 28 is lower than the upper end position of the side baffles 26, and the upper die heads 211 are arranged in pairs, and the paired upper die heads 211 are symmetrically arranged on both sides of the collecting trough 2132. The distance adjustment assembly 27 is arranged corresponding to the upper die head 211, so that the surface to be coated of the pole piece body 9 located in the first coating working position is coated twice, so as to improve the coating quality of the surface to be coated of the pole piece body 9;

[0039] Exemplarily, along the conveying direction of the pole piece body 9, the opening size of the gap between the upper nozzle 2111 and the lower nozzle 2133 located in the front is smaller than the opening size of the gap between the upper nozzle 2111 and the lower nozzle 2133 located in the rear, so that the slurry coating slit located in the rear preferentially performs rough coating on the surface to be coated of the pole piece body 9, while the slurry coating slit located in the front performs fine coating on the rough-coated surface of the pole piece body 9, thereby improving the coating quality of the pole piece body 9;

[0040] The lower die head 213 is provided with a discharge trough 22, and a discharge pipe 23 is provided on the outside of the lower die head 213. The discharge pipe 23 is connected to the collection tank 2132 through the discharge trough 22. The splashed slurry generated by the tilted spraying direction of the slurry coating slit is received by the collection tank 2132 and further collected uniformly through the discharge pipe 23.

[0041] For example, Figures 3 to 6 As shown, the lower die head 213 is provided with a feed trough 2131 at one end facing the upper die head 211, and a gasket 212 is embedded between the upper die head 211 and the lower die head 213. Figure 7 As shown, the gasket 212 has a material guide groove 2121 , and the material feed groove 2131 is connected to the slurry coating slit through the material guide groove 2121 . A material feed pipe 24 is provided outside the lower die head 213 , and the material feed pipe 24 is connected to the material feed groove 2131 .

[0042] It should be noted that, in one embodiment, continue to refer to Figure 7 and Figure 8 The electrode body 9 includes multiple coating areas 91 and blank areas between the coating areas 91, wherein the blank areas are used as processing areas for dispensing when the electrode body 9 is shifted to the first dispensing position; the feed pipe 24 is provided with multiple control valves 25, the number of the control valves 25 is consistent with the number of the coating areas 91, and the control valves 25 are arranged corresponding to the feed troughs 2131, that is, multiple feed troughs 2131 are arranged in parallel.

[0043] It should be noted that in order to control the injection pressure of the slurry in the coating slits on different sides of the upper die head 211 to be constant, a pair of feed pipes 24 can be set so that different feed pipes 24 can supply slurry to the feed trough 2131 on the corresponding side of the upper die head 211.

[0044] When the width of the electrode body 9 is small, when the equipment of the present invention is used for coating and dispensing, by controlling multiple control valves 25, the coating slits corresponding to the feed slots 2131 suitable for the width of the electrode body 9 are supplied with slurry, while the remaining feed slots 2131 stop supplying slurry when the corresponding control valves 25 are closed, saving the single use amount of slurry, thereby realizing that the equipment of the present invention can perform coating processing operations on electrode bodies 9 of various widths and sizes.

[0045] like Figure 1 and Figure 2 As shown, a traction assembly 6 is integrated on the frame 1. Along the conveying direction of the electrode body 9, the traction assembly 6 is located in front of the first coating mechanism 2. The traction assembly 6 is used to pull the electrode body 9 to be coated with glue in the conveying direction.

[0046] The frame 1 is integrated with a first adjustment component 7 and a second adjustment component 8. Along the conveying direction of the pole piece body 9, the first adjustment component 7 is located between the traction component 6 and the first coating mechanism 2, and the second adjustment component 8 is located between the first dispensing mechanism 3 and the second coating mechanism 4. The first adjustment component 7 and the second adjustment component 8 respectively correct and guide the pole piece body 9.

[0047] It should be noted that the second coating mechanism 4 is the same as the first coating mechanism 2 , so that the first coating mechanism 2 coats the first surface of the pole piece body 9 , while the second coating mechanism 4 coats the second surface of the pole piece body 9 .

[0048] It should be noted that when the coating and dispensing equipment is used, the electrode body 9 is placed along the feed end. Figure 2 The trajectory shown in the figure passes through the first coating mechanism 2, the first dispensing mechanism 3, the second coating mechanism 4 and the second dispensing mechanism 5 in sequence, and is output from the discharge end. The control valve 25 is opened to allow the slurry to pass through the feeding pipe 24, the feeding trough 2131 and the guide trough 2121 in sequence, and to be sprayed out from the slurry coating slit between the upper nozzle 2111 and the lower nozzle 2133, so as to spray the slurry on the first surface of the electrode body 9, that is, Figure 4 As shown in FIG. 2 , when the thickness of the slurry layer coated on the electrode body 9 needs to be adjusted, for example, when the thickness of the coated slurry layer needs to be reduced, the hydraulic telescopic member 271 is controlled to move the scraper 272 toward the coating roller 28. Under the drive of the connecting rod 273, the upper nozzle 2111 is bent toward the lower nozzle 2133, so that the size of the slit between the upper nozzle 2111 and the lower nozzle 2133 is reduced, thereby reducing the amount of slurry sprayed through the coating slit. Similarly, when the thickness of the coated slurry layer needs to be increased, the hydraulic telescopic member 271 is controlled to move the scraper 272 away from the coating roller 28. Under the drive of the connecting rod 273, the size of the slit between the upper nozzle 2111 and the lower nozzle 2133 is increased, thereby increasing the amount of slurry sprayed through the coating slit.

[0049] The angle between the spraying direction of the slurry coating slit and the surface of the electrode body 9 facing the lower die head 213 is greater than 90 degrees and less than 170 degrees, so that when the slurry is sprayed at the same speed, compared with the conventional method in which the spraying direction of the slurry coating slit is perpendicular to the surface of the electrode body 9, the embodiment of the present invention can reduce the impact force on the electrode body 9 and reduce the splashing of the slurry;

[0050] In addition, by providing a pair of upper die heads 211 and adjusting the corresponding distance adjustment components 27, the gap opening size between the upper nozzle 2111 and the lower nozzle 2133 located in the front position in the conveying direction of the electrode body 9 is smaller than the gap opening size between the upper nozzle 2111 and the lower nozzle 2133 located in the rear, so that the slurry coating slit located in the rear preferentially performs rough coating on the surface to be coated of the electrode body 9, while the slurry coating slit located in the front performs fine coating on the rough coated surface of the electrode body 9, thereby improving the coating quality of the electrode body 9;

[0051] Moreover, according to the width of the electrode body 9, an appropriate number of control valves 25 are selected to be opened so that the supply troughs 2131 corresponding to the opened control valves 25 are supplied with slurry, while the other supply troughs 2131 stop supplying slurry, so as to reduce the single supply consumption of slurry and reduce production costs.

[0052] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A double-sided synchronous coating and dispensing device, characterized in that: include: A frame (1) and a pole piece body (9), wherein a first coating mechanism (2), a first glue dispensing mechanism (3), a second coating mechanism (4), and a second glue dispensing mechanism (5) are integrally mounted on the frame (1), and along the conveying direction of the pole piece body (9), the pole piece body (9) sequentially passes through the first coating mechanism (2), the first glue dispensing mechanism (3), the second coating mechanism (4), and the second glue dispensing mechanism (5); The first coating mechanism (2) comprises a coating roller (28), a die assembly (21) and a distance adjustment assembly (27); the side of the pole piece body (9) away from the surface to be coated is in frictional contact with the coating roller (28); the die assembly (21) is arranged on the side of the pole piece body (9) away from the coating roller (28); the die assembly (21) comprises an upper die (211) and a lower die (213); the upper die (211) is connected to the lower die (213); and a slurry coating slit is provided between the upper die (211) and the lower die (213); the slit opening of the slurry coating slit is arranged toward the surface to be coated of the pole piece body (9); the slurry coating slit is used to coat the slurry on the surface to be coated of the pole piece body (9); the distance adjustment assembly (27) is installed on the upper die (211); and the distance adjustment assembly (27) is used to adjust the gap size of the slurry coating slit; The upper die head (211) includes an upper nozzle (2111), the lower die head (213) includes a lower nozzle (2133), a slit opening for coating is formed between the upper nozzle (2111) and the lower nozzle (2133), the distance adjustment component (27) includes a hydraulic telescopic member (271), a scraper (272) and a connecting rod (273), the hydraulic telescopic member (271) is mounted on the upper die head (211), the output end of the hydraulic telescopic member (271) is fixedly connected to the scraper (272), the outer end of the scraper (272) is spaced apart from the electrode body (9), the scraper (272) is rotatably connected to one end of the connecting rod (273), and the other end of the connecting rod (273) is rotatably connected to the upper nozzle (2111); A feed trough (2131) is provided at one end of the lower die head (213) facing the upper die head (211), a gasket (212) is embedded between the upper die head (211) and the lower die head (213), a guide groove (2121) is provided on the gasket (212), and the feed trough (2131) is connected to the slurry coating slit via the guide groove (2121), and a feed pipe (24) is provided on the outside of the lower die head (213), and the feed pipe (24) is connected to the feed trough (2131); Along the conveying direction of the pole piece body (9), the size of the gap opening between the upper nozzle (2111) and the lower nozzle (2133) located in the front is smaller than the size of the gap opening between the upper nozzle (2111) and the lower nozzle (2133) located in the rear; When the thickness of the coated slurry layer needs to be reduced, the hydraulic telescopic member (271) is controlled to move the scraper (272) toward the coating roller (28), and under the transmission of the connecting rod (273), the upper nozzle (2111) is bent toward the lower nozzle (2133), so that the size of the slit between the upper nozzle (2111) and the lower nozzle (2133) is reduced, thereby reducing the amount of slurry sprayed in the coating slit; When the thickness of the coated slurry layer needs to be increased, the hydraulic telescopic member (271) is controlled to move the scraper (272) in a direction away from the coating roller (28). Under the transmission of the connecting rod (273), the size of the slit between the upper nozzle (2111) and the lower nozzle (2133) is increased, thereby increasing the amount of slurry sprayed in the coating slit.

2. The double-sided synchronous coating and dispensing equipment according to claim 1, characterized in that: The inner end of the scraper (272) is fixedly connected to a guide rod (274), and the guide rod (274) is slidably connected to the upper die head (211), wherein the sliding direction of the guide rod (274) and the upper die head (211) is consistent with the telescopic direction of the hydraulic telescopic member (271).

3. The double-sided synchronous coating and dispensing equipment according to claim 2, characterized in that: The angle between the spraying direction of the coating slit and the surface of the pole piece body (9) facing the lower die head (213) is greater than (90) degrees and less than (170) degrees.

4. The double-sided synchronous coating and dispensing equipment according to claim 3, characterized in that: A collecting groove (2132) is provided on one side of the lower die head (213) facing the coating roller (28), and side baffles (26) are fixedly connected to both ends of the lower die head (213) located at the collecting groove (2132). The upper die heads (211) are arranged in pairs, and the paired upper die heads (211) are symmetrically arranged on both sides of the collecting groove (2132), and the distance adjustment assembly (27) is arranged corresponding to the upper die head (211); A discharge trough (22) is provided in the lower die head (213), and a discharge pipe (23) is provided outside the lower die head (213). The discharge pipe (23) is connected to the collecting tank (2132) through the discharge trough (22).

5. The double-sided synchronous coating and dispensing equipment according to claim 4, characterized in that: The electrode body (9) includes a plurality of coating areas (91) and blank areas between the coating areas (91); a plurality of control valves (25) are provided on the feed pipe (24); the number of the control valves (25) is consistent with the number of the coating areas (91), and the control valves (25) are provided corresponding to the feed troughs (2131), that is, the plurality of feed troughs (2131) are provided in parallel.

6. The double-sided synchronous coating and dispensing equipment according to claim 5, characterized in that: A traction assembly (6) is integrated and mounted on the frame (1). Along the conveying direction of the electrode body (9), the traction assembly (6) is located in front of the first coating mechanism (2). The traction assembly (6) is used to pull the electrode body (9) to be coated and dispensed toward the conveying direction.

7. The double-sided synchronous coating and dispensing equipment according to claim 6, characterized in that: A first adjustment component (7) and a second adjustment component (8) are integrally mounted on the frame (1); along the conveying direction of the pole piece body (9), the first adjustment component (7) is located between the traction component (6) and the first coating mechanism (2), and the second adjustment component (8) is located between the first dispensing mechanism (3) and the second coating mechanism (4).

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