An electrolyte wetting apparatus and method for lithium battery manufacturing

Abstract

This invention relates to the field of lithium battery manufacturing technology, specifically to an electrolyte wetting device and method for lithium battery manufacturing. The device includes a wetting cylinder with a sealing cap bolted to its top. A rotating shaft rotatably connects the bottom plate of the wetting cylinder and the sealing cap. Two sets of symmetrically distributed blades are fixed on the shaft. Limiting grooves are formed on the surface of the blades, and lithium battery components are inserted into these grooves. A locking plate is positioned above the lithium battery components, and a locking assembly is provided between the locking plate and the blades. After the locking assembly is tightened, the locking plate clamps the lithium battery components downwards. The advantages are: the limiting grooves on the blade surfaces are used to insert the lithium battery components; the locking plate and blades cooperate to firmly fix the lithium battery components, ensuring that the position and state of each lithium battery component are relatively consistent during the wetting process. This consistent fixing method helps the electrolyte to diffuse uniformly in the electrode pores of each lithium battery component.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing, specifically to an electrolyte wetting apparatus and method for lithium battery manufacturing. Background Technology

[0002] In the lithium battery manufacturing process, the electrolyte wetting process is crucial, as its effectiveness directly affects the performance and quality of the lithium battery. Traditional electrolyte wetting methods have several shortcomings: Conventional wetting methods rely primarily on the natural diffusion of electrolyte into the electrode pores. This process is relatively slow, leading to a prolonged lithium battery manufacturing cycle, low production efficiency, and an inability to meet the speed requirements of large-scale industrial production. Due to the lack of effective auxiliary methods, the diffusion of electrolyte within the electrode material is difficult to achieve uniformity; some areas may be over-wetted, while others may be under-wetted. This non-uniformity causes localized performance differences during charging and discharging, affecting the overall performance and lifespan of the battery.

[0003] Furthermore, in traditional impregnation processes, it is difficult to precisely control key factors such as electrolyte temperature and gas environment. For example, unsuitable electrolyte temperature may affect its viscosity and diffusion rate; the lack of suitable gas-assisted methods makes it impossible to effectively promote the flow and diffusion of electrolyte in the electrode pores. These factors combined further limit the optimization of electrolyte impregnation effects. Summary of the Invention

[0004] The purpose of this invention is to provide an electrolyte wetting apparatus and method for manufacturing lithium batteries, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electrolyte immersion device for lithium battery manufacturing, comprising an immersion cylinder, a sealing cap mounted on the top of the immersion cylinder by bolts, a rotating shaft rotatably connected between the bottom plate of the immersion cylinder and the sealing cap, two sets of symmetrically distributed blades fixed on the shaft, a limiting groove formed on the surface of the blades, a lithium battery assembly inserted into the limiting groove, a buckle plate provided above the lithium battery assembly, a locking assembly provided between the buckle plate and the blades, and after the locking assembly is locked, the buckle plate clamps the lithium battery assembly downwards; A pre-reserved groove is provided at the bottom of the rotating shaft, and a gas supply pipe is inserted into the bottom of the pre-reserved groove. The gas supply pipe passes through the bottom plate of the impregnation cylinder. A slot is provided on the surface of the blade, and a gas supply channel is provided on the surface of the slot. Multiple gas dissipation holes are provided on the surface of the gas supply channel. A one-way gas injection valve is inserted and fixed on the surface of the rotating shaft. One end of the one-way gas injection valve extends into the pre-reserved groove, and the other end of the one-way gas injection valve is inserted into the slot. After the gas introduced by the gas supply pipe enters the pre-reserved groove, the gas is injected into the gas supply channel through the one-way gas injection valve and then dissipates from the gas dissipation holes.

[0006] Preferably, a plurality of legs are fixed to the bottom surface of the infiltration cylinder, a one-way pressure relief valve is inserted and fixed on the top plate of the infiltration cylinder, and a lifting ring is fixed on the top plate of the infiltration cylinder. Bearing seats are fixed on both the bottom surface of the sealing cover and the top surface of the bottom plate of the infiltration cylinder, and both ends of the rotating shaft are respectively inserted into the inner rings of the two bearing seats.

[0007] Preferably, a slot is formed on the top surface of the rotating shaft. The slot is a square groove, and a plug block is inserted into the slot. The plug block is a square block. A servo motor set is fixed on the top surface of the sealing cover, and the shaft body of the servo motor set penetrates through the sealing cover and is fixed on the top surface of the plug block.

[0008] Preferably, the buckle plate has a "C" - shaped plate structure, and a rubber gasket is fixed on the surface of the buckle plate. The rubber gasket is clamped between the lithium - battery assembly and the buckle plate, and through - holes are formed on both the surface of the rubber gasket and the buckle plate.

[0009] Preferably, the locking assembly includes a screw rod and a nut. The bottom end of the screw rod is fixed on the top surface of the blade, the nut is sleeved on the top end of the screw rod, and a gasket is sleeved on the top end of the screw rod. After the nut is screwed and locked on the top end of the screw rod, the gasket is clamped between the buckle plate and the nut and undergoes elastic deformation.

[0010] Preferably, hook plates are fixed on both sides of the buckle plate. The hook plates have an "L" - shaped plate structure. One end of the hook plate blocks one side of the lithium - battery assembly, and an anti - deviation limiting member is provided between the buckle plate and the blade.

[0011] Preferably, the anti - deviation limiting member includes a limiting plate, an elastic hanging plate, a strip, and a pull ring. There are two limiting plates, and both limiting plates are fixed on the bottom surface of the top plate of the buckle plate and are symmetrically distributed about the blade. The elastic hanging plate is fixed on the bottom surface of the limiting plate. The strip is a right - angled trapezoidal strip and is fixed on the bottom surface of the elastic hanging plate. Slots are formed on both sides of the blade, and the strip is inserted into the slots. The pull ring is fixed on the side of the elastic hanging plate far from the blade at the bottom.

[0012] Preferably, a sealing bearing is fixed at the bottom end of the infiltration cylinder. The inner ring of the sealing bearing is sleeved on the pipe body of the air supply pipe. A rubber ring is fixed on the surface of the slot, and the rubber ring is clamped between the one - way air injection valve and the slot and undergoes elastic deformation.

[0013] Preferably, an installation groove is formed on the outer wall of the rotating shaft. A plurality of through - holes are formed on the surface of the installation groove. A spiral heating tube is installed inside the installation groove. A metal cover is fixed between the top surface and the bottom surface of the installation groove. The metal cover is formed by welding two semi - circular ring plates, and the outer diameter of the metal cover is equal to the outer diameter of the rotating shaft.

[0014] An electrolyte infiltration method for lithium - battery manufacturing includes the following steps: After inserting the lithium battery assembly into the corresponding limiting slot, fasten the buckle plate onto the lithium battery assembly and fix the buckle plate above the blade using the locking assembly to complete the fixing of the lithium battery assembly onto the blade; then place the rotating shaft into the immersion tank, then add electrolyte into the immersion tank, and fix the sealing cap onto the immersion tank with bolts; The servo motor unit is triggered to drive the shaft to rotate. During this process, airflow is introduced into the reserved slot through the air supply pipe. The airflow is injected into the air supply channel through the one-way air injection valve and then dispersed into the electrolyte through the air outlet. At the same time, the spiral heating tube is turned on. After the spiral heating tube heats up, it promotes the electrolyte to fully wet the impregnation cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The electrolyte wetting device and method for lithium battery manufacturing proposed in this invention uses a rotating shaft to drive blades, which mechanically stirs the electrolyte in the wetting cylinder, causing it to flow and mix. Simultaneously, airflow is introduced into a pre-reserved tank through a gas supply pipe. The airflow is injected into the gas supply channel via a one-way gas injection valve and then dispersed into the electrolyte through a gas diffuser. The combined effect of the rotating shaft and the airflow from the gas diffuser greatly accelerates the diffusion rate of the electrolyte in the electrode pores, significantly shortens the wetting time, and improves production efficiency.

[0016] As the shaft drives the blades to rotate, it stirs the electrolyte, creating omnidirectional flow within the impregnation chamber. Simultaneously, evenly distributed air diffusers on the surface of the air delivery channels uniformly spray air into the electrolyte, preventing localized areas from diffusing too quickly or too slowly and ensuring uniform wetting of the electrode materials. Positioning grooves on the blade surface are used to insert lithium battery modules. The locking plate engages with the blades, securing the modules firmly and ensuring consistent positioning and state for each module during impregnation. This consistent fixing method facilitates uniform electrolyte diffusion within the electrode pores of each lithium battery module, improving product consistency and quality stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Sectional view of the structure at point AA; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 This is a schematic diagram of the connection structure between the shaft and the blades of the present invention; Figure 6 This is a schematic diagram of the connection structure between the blade and the buckle plate of the present invention; Figure 7 for Figure 6 Sectional view of the structure at point DD; Figure 8 This is a schematic diagram of the connection structure between the buckle plate and the limiting plate of the present invention; Figure 9 This is a schematic diagram of the blade structure of the present invention.

[0018] In the diagram: 1. Immersion cylinder, 101. Sealing cap, 102. Bolt, 103. Lifting ring, 104. One-way pressure relief valve, 105. Bearing seat, 106. Support leg, 2. Rotating shaft, 201. Slot, 202. Insert block, 203. Servo motor assembly, 204. Reserved slot, 205. Mounting slot, 206. Through hole, 207. Metal cover, 208. One-way air injection valve, 3. Air supply pipe, 301. Sealed bearing, 4. Spiral heating tube, 5. Blade, 501. Limiting groove, 502. Slot, 503. Air supply channel, 504. Air vent, 505. Guide plate, 506. Slot, 507. Support rod, 508. Rubber ring, 6. Lithium battery assembly, 7. Buckle plate, 701. Rubber gasket, 702. Perforation, 703. Screw, 704. Nut, 705. Limiting plate, 8. Elastic hanging plate, 801. Locking strip, 802. Pull ring, 803. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figures 1-9This invention provides a technical solution: an electrolyte impregnation device for lithium battery manufacturing, comprising an impregnation cylinder 1, a sealing cover 101 mounted on the top of the impregnation cylinder 1 by bolts 102, a rotating shaft 2 rotatably connected between the bottom plate of the impregnation cylinder 1 and the sealing cover 101, two sets of symmetrically distributed blades 5 fixed on the shaft of the rotating shaft 2, a limiting groove 501 formed on the surface of the blades 5, a lithium battery assembly 6 inserted into the limiting groove 501, a buckle plate 7 above the lithium battery assembly 6, and a locking assembly between the buckle plate 7 and the blades 5, the locking assembly locking... Immediately afterwards, the buckle plate 7 clamps the lithium battery assembly 6 downwards; multiple support legs 106 are fixed to the bottom surface of the impregnation cylinder 1, a one-way pressure relief valve 104 is inserted and fixed to the top plate of the impregnation cylinder 1, and a lifting ring 103 is fixed to the top plate of the impregnation cylinder 1. Bearing seats 105 are fixed to the bottom surface of the sealing cover 101 and the top surface of the bottom plate of the impregnation cylinder 1. The two ends of the rotating shaft 2 are respectively inserted into the inner rings of the two bearing seats 105; a slot 201 is opened on the top surface of the rotating shaft 2. The slot 201 is a square groove, and a block 202 is inserted into the inside of the slot 201. The block 202 is a square block. A servo motor assembly 203 is fixed to the top surface of the sealing cover 101. The shaft of the servo motor assembly 203 passes through the sealing cover 101 and is fixed to the top surface of the insert block 202. A reserved groove 204 is provided at the bottom of the rotating shaft 2. An air supply pipe 3 is inserted into the bottom of the reserved groove 204. The air supply pipe 3 passes through the bottom plate of the impregnation cylinder 1. A slot 502 is provided on the surface of the blade 5. An air supply channel 503 is provided on the surface of the slot 502. Multiple air dissipation holes 504 are provided on the surface of the air supply channel 503. A one-way air injection valve 208 is inserted and fixed to the surface of the rotating shaft 2. One end of the gas valve 208 extends into the reserved groove 204, and the other end of the one-way gas injection valve 208 is inserted into the slot 502. After the gas introduced by the gas supply pipe 3 enters the reserved groove 204, the gas is injected into the gas supply channel 503 through the one-way gas injection valve 208 and then dispersed from the gas outlet 504. A sealing bearing 301 is fixed at the bottom of the impregnation cylinder 1. The inner ring of the sealing bearing 301 is sleeved on the pipe body of the gas supply pipe 3. A rubber ring 508 is fixed on the surface of the slot 502. The rubber ring 508 is clamped between the one-way gas injection valve 208 and the slot 502 and undergoes elastic deformation.

[0021] After inserting the lithium battery assembly 6 into the corresponding limiting slot 501, fasten the buckle plate 7 onto the lithium battery assembly 6, and fix the buckle plate 7 above the blade 5 through the locking assembly, thus completing the fixation of the lithium battery assembly 6 on the blade 5; Place the rotating shaft 2 into the infiltration cylinder 1, then pour the electrolyte into the infiltration cylinder 1, and fix the sealing cover 101 on the infiltration cylinder 1 through bolts 102; Trigger the switch of the servo motor group 203 to drive the rotation of the rotating shaft 2. During this process, introduce air flow into the reserved slot 204 through the air delivery pipe 3. The air flow is injected into the air delivery channel 503 through the one-way air injection valve 208 and then dispersed into the electrolyte through the air dispersion holes 504; The rotation of the rotating shaft 2 and the air flow ejected from the air dispersion holes 504 both accelerate the diffusion of the electrolyte in the electrode pores; And guide plates 505 are fixed on both sides of the blade 5. The guide plates 505 are inclined, and the guide plates 505 guide the air flow ejected from the air dispersion holes 504 upward; A support rod 507 is fixed between two adjacent blades 5 distributed vertically and horizontally to prevent the end of the blade 5 far from the rotating shaft 2 from bending.

[0022] In order to firmly clamp the lithium battery assembly 6 between the blade 5 and the buckle plate 7 for infiltration, the following is proposed: The buckle plate 7 has a "U"-shaped plate structure. A rubber gasket 702 is fixed on the surface of the buckle plate 7. The rubber gasket 702 is clamped between the lithium battery assembly 6 and the buckle plate 7. Through holes 703 are provided on the surfaces of both the rubber gasket 702 and the buckle plate 7. The locking assembly includes a screw 704 and a nut 705. The bottom end of the screw 704 is fixed on the top surface of the blade 5. The nut 705 is sleeved on the top end of the screw 704, and a gasket is sleeved on the top end of the screw 704. After the nut 705 is screwed and locked at the top end of the screw 704, the gasket is clamped between the buckle plate 7 and the nut 705 and undergoes elastic deformation; Hook plates 701 are fixed on both sides of the buckle plate 7. The hook plates 701 have an "L"-shaped plate structure. One end of the hook plate 701 blocks one side of the lithium battery assembly 6. An anti-deviation limiting member is provided between the buckle plate 7 and the blade 5; The anti-deviation limiting member includes a limiting plate 8, an elastic hanging plate 801, a clamping strip 802, and a pull ring 803. There are two limiting plates 8. Both limiting plates 8 are fixed on the bottom surface of the top plate of the buckle plate 7, and the two limiting plates 8 are symmetrically distributed with respect to the blade 5. The elastic hanging plate 801 is fixed on the bottom surface of the limiting plate 8. The clamping strip 802 is in the shape of a right-angled trapezoidal strip. The clamping strip 802 is fixed on the bottom surface of the elastic hanging plate 801. Slots 506 are provided on both sides of the blade 5. The clamping strip 802 is inserted into the slots 506. The pull ring 803 is fixed on the bottom of the elastic hanging plate 801 on the side far from the blade 5.

[0023] When the lithium battery assembly 6 is inserted into the corresponding limiting slot 501, the buckle plate 7 overlaps the lithium battery assembly 6, and the screw 704 passes through the through hole 703. After the nut 705 is screwed onto the screw 704 and locked, the lithium battery assembly 6 is firmly clamped between the blade 5 and the buckle plate 7. At this time, the two limiting plates 8 support the two sides of the blade 5 to prevent the buckle plate 7 from tilting. The locking strip 802 is locked in the locking slot 506 and pulls the limiting plate 8 through the elastic hanging plate 801, so that the buckle plate 7 stably clamps the lithium battery assembly 6 downward. In this way, the blade 5 not only realizes the mixing of the electrolyte inside the immersion cylinder 1, but also the gas introduced by the gas channel 503 inside the blade 5 is released through the gas dissipation hole 504 to accelerate the diffusion of the electrolyte in the electrode pores. In addition, the blade 5 supports the lithium battery assembly 6 and works with the buckle plate 7 to complete the installation of the lithium battery assembly 6. That is, the blade 5 has multiple uses.

[0024] To accelerate electrolyte diffusion in electrode pores by controlling electrolyte temperature, the following approach was proposed: The outer wall of the rotating shaft 2 has a mounting groove 205, and the surface of the mounting groove 205 has multiple through holes 206. A spiral heating tube 4 is installed inside the mounting groove 205. A metal cover 207 is fixed between the top and bottom surfaces of the mounting groove 205. The metal cover 207 is welded from two semi-circular ring plates, and the outer diameter of the metal cover 207 is equal to the outer diameter of the rotating shaft 2. After the spiral heating tube 4 is working, the ambient temperature rises. The spiral heating tube 4 is preset to a working temperature to accelerate the diffusion of electrolyte in the electrode pores. A battery is installed on the rotating shaft 2 to power the spiral heating tube 4. The high-pressure gas in the mounting groove 205 can be diffused into the reserved groove 204 through the through holes 206 and then injected into the gas supply channel 503 through the one-way gas injection valve 208.

[0025] Example 2, based on Example 1, proposes an electrolyte wetting method for lithium battery manufacturing, including the following steps: Insert the lithium battery assembly 6 into the limiting groove 501 opened on the surface of the blade 5. Buckle the buckle plate 7 with a "U" - shaped plate - like structure on the lithium battery assembly 6. The rubber gasket 702 fixed on the surface of the buckle plate 7 is clamped between the lithium battery assembly 6 and the buckle plate 7, playing a role in buffering and increasing friction. At the same time, the rubber gasket 702 is aligned with the through - hole 703 opened on the surface of the buckle plate 7, and the screw rod 704 fixed on the top surface of the blade 5 passes through the through - hole 703. Sleeve the nut 705 on the top end of the screw rod 704, and sleeve a gasket on the top end of the screw rod 704. Screw the nut 705 to lock it. At this time, the gasket is elastically deformed while being clamped between the buckle plate 7 and the nut 705, firmly clamping the lithium battery assembly 6 between the blade 5 and the buckle plate 7. The hook plates 701 with an "L" - shaped plate - like structure fixed on both sides of the buckle plate 7 have one end blocking one side of the lithium battery assembly 6, playing an auxiliary fixing role. The strip 802 is inserted into the card slots 506 opened on both sides of the blade 5. The pull - ring 803 is fixed on the side of the bottom of the elastic hanging plate 801 far from the blade 5. Through the elastic hanging plate 801, the limiting plate 8 is pulled to prevent the buckle plate 7 from tilting, so that the buckle plate 7 stably clamps the lithium battery assembly 6 downward.

[0026] Place the rotating shaft 2 installed with the lithium battery assembly 6 into the infiltration cylinder 1. A plurality of legs 106 are fixed on the bottom surface of the infiltration cylinder 1, playing a supporting role. Pour electrolyte into the infiltration cylinder 1. Fix the sealing cover 101 on the top of the infiltration cylinder 1 through bolts 102. The bearing seats 105 fixed on the bottom surface of the sealing cover 101 and the top surface of the bottom plate of the infiltration cylinder 1 are respectively inserted into both ends of the rotating shaft 2, realizing the rotational connection between the rotating shaft 2 and the bottom plate of the infiltration cylinder 1 and the sealing cover 101. Introduce air flow into the reserved groove 204 opened at the bottom of the rotating shaft 2 through the air delivery pipe 3. The air delivery pipe 3 is inserted at the bottom of the reserved groove 204. One end of the one - way air injection valve 208 inserted and fixed on the surface of the rotating shaft 2 extends into the reserved groove 204, and the other end is inserted into the slot 502 opened on the surface of the blade 5. An air delivery channel 503 is opened on the surface of the slot 502, and a plurality of air dispersion holes 504 are opened on the surface of the air delivery channel 503. The rubber ring 508 fixed on the surface of the slot 502 is elastically deformed while being clamped between the one - way air injection valve 208 and the slot 502, playing a sealing role. After the gas enters the reserved groove 204, it is injected into the air delivery channel 503 through the one - way air injection valve 208, and then diffuses out from the air dispersion holes 504 into the electrolyte.

[0027] Install a storage battery on the rotating shaft 2 to supply power to the spiral heating tube 4. Preset the working temperature of the spiral heating tube 4 to meet the requirement of accelerating the diffusion of the electrolyte in the electrode pores. The high - pressure gas in the installation groove 205 can be dispersed into the reserved groove 204 through the through - hole 206, and then injected into the air delivery channel 503 through the one - way air injection valve 208.

[0028] The switch of the servo motor assembly 203 fixed to the top surface of the sealing cover 101 is triggered. The shaft of the servo motor assembly 203 passes through the sealing cover 101 and is fixed to the top surface of the square block 202 inserted into the slot 201 with a square groove on the top surface of the rotating shaft 2, thereby driving the rotating shaft 2 to rotate. The rotation of the rotating shaft 2 and the airflow ejected from the vent hole 504 both accelerate the diffusion of the electrolyte in the electrode pores. At the same time, the guide plates 505 inclined on both sides of the blade 5 guide the airflow ejected from the vent hole 504 upward. The support rod 507 fixed between two adjacent blades 5 distributed vertically prevents the end of the blade 5 away from the rotating shaft 2 from bending. During operation, if the pressure inside the impregnation tank 1 is too high, it can be relieved by the one-way pressure relief valve 104 fixed to the top plate of the impregnation tank 1; if it is necessary to move the device, it can be operated by the lifting ring 103 fixed to the top plate of the impregnation tank 1.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrolyte immersion apparatus for lithium battery manufacturing, comprising an immersion cylinder (1), wherein a sealing cap (101) is mounted on the top of the immersion cylinder (1) by bolts (102), characterized in that: A rotating shaft (2) is rotatably connected between the bottom plate of the infiltration cylinder (1) and the sealing cover (101). Two sets of symmetrically distributed blades (5) are fixed on the shaft body of the rotating shaft (2). A limiting groove (501) is formed on the surface of the blade (5). A lithium battery assembly (6) is inserted into the limiting groove (501). A buckle plate (7) is arranged above the lithium battery assembly (6). A locking component is arranged between the buckle plate (7) and the blade (5). After the locking component is locked, the buckle plate (7) clamps the lithium battery assembly (6) downward; A reserved groove (204) is formed at the bottom of the rotating shaft (2). An air delivery pipe (3) is inserted into the bottom of the reserved groove (204). The air delivery pipe (3) penetrates through the bottom plate of the infiltration cylinder (1). A slot (502) is formed on the surface of the blade (5). An air delivery channel (503) is formed on the surface of the slot (502). A plurality of air dispersion holes (504) are formed on the surface of the air delivery channel (503). A one-way air injection valve (208) is inserted and fixed on the surface of the rotating shaft (2). One end of the one-way air injection valve (208) extends into the reserved groove (204), and the other end of the one-way air injection valve (208) is inserted into the slot (502); After the gas introduced by the air delivery pipe (3) enters the reserved groove (204), the gas is injected into the air delivery channel (503) through the one-way air injection valve (208) and then dispersed from the air dispersion holes (504).

2. The electrolyte wetting device for lithium battery manufacturing according to claim 1, characterized in that: A plurality of legs (106) are fixed on the bottom surface of the infiltration cylinder (1). A one-way pressure relief valve (104) is inserted and fixed on the top plate of the infiltration cylinder (1), and a lifting ring (103) is fixed on the top plate of the infiltration cylinder (1). Bearing seats (105) are fixed on the bottom surface of the sealing cover (101) and the top surface of the bottom plate of the infiltration cylinder (1). Two ends of the rotating shaft (2) are respectively inserted into the inner rings of the two bearing seats (105).

3. The electrolyte wetting device for lithium battery manufacturing according to claim 1, characterized in that: A slot (201) is formed on the top surface of the rotating shaft (2). The slot (201) is a square slot. An insertion block (202) is inserted into the slot (201). The insertion block (202) is a square block. A servo motor set (203) is fixed on the top surface of the sealing cover (101). The shaft body of the servo motor set (203) penetrates through the sealing cover (101) and is fixed on the top surface of the insertion block (202).

4. The electrolyte wetting device for lithium battery manufacturing according to claim 1, characterized in that: The buckle plate (7) is in a "C"-shaped plate structure. A rubber gasket (702) is fixed on the surface of the buckle plate (7). The rubber gasket (702) is clamped between the lithium battery assembly (6) and the buckle plate (7). Through holes (703) are formed on the surfaces of the rubber gasket (702) and the buckle plate (7).

5. The electrolyte wetting device for lithium battery manufacturing according to claim 4, characterized in that: The locking component includes a screw rod (704) and a nut (705). The bottom end of the screw rod (704) is fixed on the top surface of the blade (5). The nut (705) is sleeved on the top end of the screw rod (704). A gasket is sleeved on the top end of the screw rod (704). After the nut (705) is screwed and locked on the top end of the screw rod (704), the gasket is elastically deformed while being clamped between the buckle plate (7) and the nut (705).

6. The electrolyte wetting device for lithium battery manufacturing according to claim 5, characterized in that: Both sides of the buckle plate (7) are fixed with hook plates (701). The hook plates (701) are in the shape of an "L" plate. One end of the hook plate (701) is blocked on one side of the lithium battery assembly (6). Anti-deviation limiting components are provided between the buckle plate (7) and the blade (5).

7. The electrolyte wetting apparatus for lithium battery manufacturing according to claim 6, characterized in that: The anti-deviation limiting component includes a limiting plate (8), an elastic hanging plate (801), a locking strip (802), and a pull ring (803). There are two limiting plates (8), both of which are fixed to the bottom surface of the top plate of the buckle plate (7), and the two limiting plates (8) are symmetrically distributed about the blade (5). The elastic hanging plate (801) is fixed to the bottom surface of the limiting plate (8). The locking strip (802) is a right-angled trapezoidal strip and is fixed to the bottom surface of the elastic hanging plate (801). The blade (5) has a slot (506) on both sides, and the locking strip (802) is inserted into the slot (506). The pull ring (803) is fixed to the bottom of the elastic hanging plate (801) on the side away from the blade (5).

8. The electrolyte wetting device for lithium battery manufacturing according to claim 1, characterized in that: The bottom end of the immersion cylinder (1) is fixed with a sealing bearing (301). The inner ring of the sealing bearing (301) is sleeved on the body of the gas supply pipe (3). A rubber ring (508) is fixed on the surface of the slot (502). The rubber ring (508) is clamped between the one-way gas injection valve (208) and the slot (502) and undergoes elastic deformation.

9. The electrolyte wetting device for lithium battery manufacturing according to claim 1, characterized in that: The outer wall of the rotating shaft (2) is provided with an installation groove (205), and the surface of the installation groove (205) is provided with multiple through holes (206). A spiral heating tube (4) is installed inside the installation groove (205). A metal cover (207) is fixed between the top surface and the bottom surface of the installation groove (205). The metal cover (207) is welded from two semi-circular ring plates, and the outer diameter of the metal cover (207) is equal to the outer diameter of the rotating shaft (2).

10. A method for impregnating an electrolyte for manufacturing a lithium battery, using the electrolyte impregnation apparatus for manufacturing a lithium battery as described in any one of claims 1-9, characterized in that: The method includes the following steps: After inserting the lithium battery assembly (6) into the corresponding limiting groove (501), fasten the buckle (7) onto the lithium battery assembly (6) and fix the buckle (7) above the blade (5) by the locking assembly, thus completing the fixing of the lithium battery assembly (6) onto the blade (5); put the rotating shaft (2) into the immersion cylinder (1), then add the electrolyte into the immersion cylinder (1), and fix the sealing cap (101) onto the immersion cylinder (1) with bolts (102); The switch of the servo motor group (203) is triggered to drive the shaft (2) to rotate. During this process, airflow is introduced into the reserved slot (204) through the air supply pipe (3). The airflow is injected into the air supply channel (503) through the one-way air injection valve (208) and then dispersed into the electrolyte through the air outlet (504). At the same time, the spiral heating tube (4) is turned on. After the spiral heating tube (4) heats up, it promotes the electrolyte to fully wet the impregnation cylinder (1).

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