Multi-stage vortex layered injection device for automobile battery electrolyte
By designing a multi-stage vortex layered injection device, the problem of bubble generation and slow flow rate during the injection of the electrolyte of the automobile battery is solved, and efficient electrolyte injection and wetting effects are achieved.
Patent Information
- Application Number
- CN202510350670.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2025-06-10
AI Technical Summary
The prior art has problems of bubble generation and slow flow rate during the injection of electrolyte of automobile batteries, which affects the injection efficiency of electrolyte.
A multi-stage vortex layered injection device for automotive battery electrolyte is designed, including an antifoam box, a multi-stage vortex tube and a venturi tube. Through defoaming treatment, multi-stage vortex conveying and venturi tube growth, the bubble generation and the flow rate of the electrolyte are reduced.
It effectively reduces the generation of bubbles during the electrolyte injection process, improves the flow rate and wetting effect of the electrolyte, and improves the battery injection efficiency.
Smart Images
Figure CN120127358A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of automotive batteries, and particularly to a multi-stage vortex stratified injection device for automotive battery electrolytes. Background Art
[0002] An electric vehicle battery is a type of battery, which is divided into two categories, namely, storage batteries and fuel cells.
[0003] Storage batteries are applicable to pure electric vehicles, including lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, secondary lithium batteries, air batteries, and ternary lithium batteries. Fuel cells are specifically used for fuel cell electric vehicles, including alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), proton exchange membrane fuel cells (PEMFC), and direct methanol fuel cells (DMFC).
[0004] An electrolyte is a medium used in chemical batteries, electrolytic capacitors, etc., and its representative content varies greatly in different industries. There is an electrolyte in a living organism (also called an electrolyte), as well as an electrolyte applied in the battery industry, and electrolytes in industries such as electrolytic capacitors and supercapacitors.
[0005] One of the key processes in the commercialization of secondary lithium-ion batteries is the use of a liquid electrolyte, which makes the injection process crucial. The injection process refers to the process of injecting the electrolyte into the interior of the battery cell and sealing it using an injection device.
[0006] The principle of the injection device is to inject the electrolyte into the limited inner cavity of the battery (including the battery cell and the unfilled space) using specific processes (such as vacuum, pressure, and time). A part of the electrolyte penetrates into the battery cell (composed of a positive electrode, a negative electrode sheet, and a separator), while the other part occupies the unfilled space. The total amount of the injected electrolyte is called the injection volume. The better the wetting effect, the more electrolyte penetrates into the battery cell. The shorter the time required for the electrolyte to penetrate into the battery cell, the better the process ability of the injection device.
[0007] However, there are some problems in the prior art: when the existing electrolyte is injected, a large number of bubbles are generated during the input process, and the flow rate is slow, which affects the injection of the electrolyte. Therefore, we propose a multi-stage vortex stratified injection device for automotive battery electrolytes. Summary of the Invention
[0008] In view of the deficiencies in the prior art, the present invention provides a multi-stage vortex stratified injection device for automotive battery electrolytes.
[0009] The object of the present invention is achieved as follows: A multi-stage vortex stratified injection device for automotive battery electrolytes, including an operation table, and a rotating platform is movably installed on the operation table; It includes an installation box, inside which a defoaming box is fixedly installed. A first vortex tube is fixedly connected to the lower part of the defoaming box. The output end of the first vortex tube is connected to a Venturi tube. The output end of the Venturi tube is connected to a second vortex tube. The output end of the second vortex tube is connected to a third vortex tube; An elevating and adjusting mechanism for contacting the battery is fixedly installed at the end of the installation bracket.
[0010] Specifically, a feed pipe is fixedly communicated with the upper end of the defoaming box. The feed pipe is communicated with an external storage tank. A first negative pressure pipe is fixedly communicated with the upper end of the defoaming box. The first negative pressure pipe is communicated with an external vacuum pump.
[0011] Specifically, an ultrasonic tube is suspended inside the first vortex tube. The two ends of the ultrasonic tube are respectively connected with an ultrasonic input tube and an ultrasonic output tube. The ultrasonic input tube and the ultrasonic output tube are connected to an external ultrasonic generator.
[0012] Specifically, a conical nozzle is provided at the end of the first vortex tube. The conical nozzle is fixed inside one end of the Venturi tube. An annular tube is fixedly installed outside the conical nozzle. A high-pressure pipe is fixedly communicated with one side of the annular tube. A plurality of inclined nozzles are communicated with the other side of the annular tube.
[0013] Specifically, a first spring is fixedly arranged inside the inclined nozzle. One end of the first spring is fixedly provided with a piston plate. A plurality of leakage holes are opened outside the inclined nozzle. The piston plate is located on one side of the leakage holes.
[0014] Specifically, the elevating and adjusting mechanism includes a servo electric cylinder fixedly installed at the end of the installation bracket. Telescopic cylinders are respectively fixedly installed on the lower parts of both sides of the installation bracket. A telescopic rod is movably installed inside the telescopic cylinder.
[0015] Specifically, a plurality of long grooves are opened on the telescopic cylinder. A plurality of clamping blocks are fixedly provided at the upper end of the telescopic rod. The plurality of clamping blocks are respectively movably clamped and connected inside the plurality of long grooves. A contact plate is fixedly installed at the bottom end of the telescopic rod.
[0016] Specifically, a first limit ring is welded to the upper end of the telescopic cylinder. A second limit ring is welded to the bottom end of the telescopic rod. A second spring is fixedly installed between the first limit ring and the second limit ring.
[0017] Specifically, a stepped injection nozzle and a stepped negative pressure nozzle are movably installed on the contact plate. Adjusting cavities are opened at the bottom ends of both sides of the telescopic rod. A push rod is movably installed inside the adjusting cavity. One side of the push rod is connected with a third spring. One end of the third spring is fixedly connected to the inner wall of the adjusting cavity.
[0018] Specifically, a clamping rod is fixedly arranged on one side of the bottom end of the ejector rod. Elastic sheets are fixedly arranged at the upper ends of the stepped injection nozzle and the stepped negative pressure nozzle. Both ends of the elastic sheet are snap-fitted with the clamping rod through buckles.
[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention rotates the battery through the rotating platform on the operating table, facilitating the quick placement, electrolyte injection, and removal of the battery. In order to maintain the stable rotation of the rotating platform, the rotating platform is supported and its rotation is maintained by a number of ball bearings. Before the electrolyte is injected, the defoaming box is used to defoam the electrolyte and discharge the air in the electrolyte. Then, the first scroll tube, the second scroll tube, and the third scroll tube are used to transport the electrolyte, reducing the generation of bubbles and being able to eliminate the bubbles during the process of colliding vortices. In addition, the Venturi tube is used to increase the speed of the electrode liquid, improving the flow rate of the electrolyte and the wetting effect of the electrolyte in the battery. The present invention realizes the lifting adjustment of the stepped injection nozzle and the stepped negative pressure nozzle through the lifting adjustment mechanism, enabling the stepped injection nozzle and the stepped negative pressure nozzle to fit on the upper part of the battery. When the contact plate touches the upper part of the battery, the contact plate no longer moves. The servo electric cylinder continues to push, causing the stepped injection nozzle and the stepped negative pressure nozzle to push the elastic sheet. When the elastic sheet is pushed, the buckle at the bottom of the elastic sheet pulls the clamping rod, enabling the ejector rod to rotate. The top end of the ejector rod retracts into the inside of the telescopic rod, and then the delay ring moves downward to clamp the ejector rod. At this time, the servo electric cylinder presses the elastic sheet, further enabling the stepped injection nozzle and the stepped negative pressure nozzle to continue to move downward, so that the stepped injection nozzle and the stepped negative pressure nozzle can be snap-fitted inside the upper end of the battery, improving the snap-fitting tightness between the stepped injection nozzle and the stepped negative pressure nozzle and the battery and preventing leakage during the electrolyte injection process. The present invention is provided with an annular tube inside the Venturi tube. The inclined nozzle on one side of the annular tube is used to increase the pressure of the electrolyte, that is, the high-pressure tube inputs high-pressure nitrogen through the inclined nozzle, enabling the high-pressure nitrogen to increase the pressure of the electrolyte delivery. A first spring and a piston plate are arranged inside the inclined nozzle, enabling the piston plate to be pushed open under the action of the high-pressure nitrogen. When the high-pressure nitrogen is not being transported, the piston plate is pushed by the first spring to prevent the electrolyte from flowing back. Under the pressure increase of the high-pressure nitrogen, the electrolyte can be efficiently wet in the battery, improving the injection efficiency of the electrolyte. And the stepped negative pressure nozzle can extract air from the battery, enabling the inside of the battery to maintain a negative pressure vacuum state and improving the wetting process of the electrolyte.
[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on the provided accompanying drawings without creative efforts.
[0022] Figure 1 It is a schematic structural diagram provided by the present invention.
[0023] Figure 2 It is a schematic cross-sectional view of the operating platform provided by the present invention.
[0024] Figure 3 It is a schematic diagram of the lifting and adjusting mechanism provided by the present invention.
[0025] Figure 4 It is a schematic diagram of the interior of the installation box provided by the present invention.
[0026] Figure 5 It is a schematic diagram of the ultrasonic tube and the annular tube provided by the present invention.
[0027] Figure 6 It is provided by the present invention Figure 4 Cross-sectional view at A in
[0028] Figure 7 It is provided by the present invention Figure 6 Cross-sectional view at B in
[0029] Figure 8 It is a partial schematic diagram of the lifting and adjusting mechanism provided by the present invention.
[0030] Figure 9 It is provided by the present invention Figure 8 Enlarged view at C in
[0031] Figure 10 It is provided by the present invention Figure 9 Cross-sectional view at D in
[0032] Figure 11 It is a contact schematic diagram of the first vortex tube and the ultrasonic tube provided by the present invention.
[0033] Figure 12 It is an embedding schematic diagram of the first vortex tube and the ultrasonic tube provided by the present invention.
[0034] In the figure: 1, operating platform; 2, rotating platform; 3, placing groove; 4, servo motor; 5, ball; 6, mounting bracket; 7, mounting box; 8, cover plate; 9, lifting and adjusting mechanism; 901, servo cylinder; 902, telescopic cylinder; 903, long groove; 904, first limit ring; 905, telescopic rod; 906, second limit ring; 907, second spring; 908, clamping block; 909, delay ring; 910, collision plate; 911, contact plate; 912, stepped injection nozzle; 913, stepped negative pressure nozzle; 914, fourth spring; 915, adjusting cavity; 916, ejector rod; 917, third spring; 918, clamping rod; 919, elastic sheet; 920, buckle; 10, defoaming box; 11a, first scroll tube; 11b, first scroll tube; 11c, first scroll tube; 12, venturi tube; 13, second scroll tube; 14, third scroll tube; 15, conical nozzle; 16, annular tube; 17, inclined nozzle; 18a, ultrasonic tube; 18b, ultrasonic tube; 18c, ultrasonic tube; 19, first spring; 20, piston plate; 21, leakage hole; 22, ultrasonic output tube; 23, ultrasonic input tube; 24, high-pressure tube; 25, feed pipe; 26, first negative pressure tube; 27, interface tube; 28, fixing frame; 29, support leg. Specific embodiments
[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0036] As Figures 1 to 12 shown, the multi-stage vortex stratification injection device for automotive battery electrolyte provided by the embodiment of the present invention includes an operating platform 1, a rotating platform 2 is movably installed on the operating platform 1, and a mounting bracket 6 is provided at the tail end of the operating platform 1; Embodiment 1: An installation box 7 is provided inside the installation bracket 6. A cover plate 8 is fixedly installed on one side of the installation box 7. An antifoaming box 10 is fixedly installed inside the installation box 7. A first vortex tube 11a is fixedly connected to the lower part of the antifoaming box 10. The output end of the first vortex tube 11a is connected to a Venturi tube 12. The output end of the Venturi tube 12 is connected to a second vortex tube 13. The output end of the second vortex tube 13 is connected to a third vortex tube 14. A lifting and adjusting mechanism 9 for contacting the battery is fixedly installed at the end of the installation bracket 6. Four support legs 29 are welded to the bottom of the operating table 1. A servo motor 4 is fixedly installed at the bottom of the operating table 1 through a fixing frame 28. The output end of the servo motor 4 penetrates through the operating table 1 and is fixedly connected to the rotating platform 2. A number of balls 5 are provided in two circles between the operating table 1 and the rotating platform 2. A placement groove 3 is formed on the rotating platform 2. The upper end of the antifoaming box 10 is fixedly communicated with a feed pipe 25, and the feed pipe 25 is communicated with an external storage tank. The upper end of the antifoaming box 10 is fixedly communicated with a first negative pressure pipe 26, and the first negative pressure pipe 26 is communicated with an external vacuum pump. An ultrasonic tube 18a is suspended inside the first vortex tube 11a. The two ends of the ultrasonic tube 18a are respectively connected to an ultrasonic input tube 23 and an ultrasonic output tube 22, and the ultrasonic input tube 23 and the ultrasonic output tube 22 are connected to an external ultrasonic generator. A conical nozzle 15 is provided at the end of the first vortex tube 11a, and the conical nozzle 15 is fixed inside one end of the Venturi tube 12.
[0037] It should be noted that the operating platform 1 is supported by the support legs 29 to maintain the balance and stability of the equipment. The servo motor 4 drives the rotating platform 2 to rotate, which is convenient for rotating adjustment when the battery is placed in the placement groove 3 on the rotating platform 2, facilitating the placement, electrolyte injection, and removal of the battery. The external storage tank inputs the electrolyte into the inside of the defoaming box 10 through the feed pipe 25. The defoaming box 10 is connected to an external vacuum pump through the first negative pressure pipe 26, so that the inside of the defoaming box 10 can maintain a vacuum, facilitating the discharge of air in the electrolyte and eliminating the bubbles in the electrolyte, facilitating the input of the electrolyte into the battery, reducing the influence of bubbles and air in the electrolyte on the electrolyte injection. The electrolyte is transported through the first vortex tube 11a, the second vortex tube 13, and the third vortex tube 14. The three-stage vortex tubes rotate in the reverse direction at 2500 / 1800 / 1000 rpm to form a stable density gradient, realizing multi-layer injection, ensuring that the flow is laminar flow, and being able to eliminate the bubbles in the electrolyte during the vortex transportation process, facilitating the injection of the electrolyte into the battery. An ultrasonic tube 18a is suspended inside the first vortex tube 11a, facilitating the elimination of bubbles in the electrolyte through the vibration of ultrasonic waves, reducing the bubbles in the electrolyte again. The venturi tube 12 is used to increase the speed of the electrolyte, facilitating the rapid input of the electrolyte into the battery, effectively improving the injection efficiency of the electrolyte, and improving the infiltration efficiency of the electrolyte in the battery, and reducing bubbles, reducing the influence of bubbles on the infiltration of the electrolyte.
[0038] Embodiment 2: An annular tube 16 is fixedly installed on the outer side of the conical nozzle 15. One side of the annular tube 16 is fixedly communicated with a high-pressure pipe 24, and the other side of the annular tube 16 is communicated with a plurality of inclined nozzles 17. A first spring 19 is fixedly arranged inside the inclined nozzle 17. One end of the first spring 19 is fixedly provided with a piston plate 20. A plurality of leakage holes 21 are formed on the outer side of the inclined nozzle 17, and the piston plate 20 is located on one side of the leakage holes 21.
[0039] It should be noted that the annular tube 16 is arranged on one side of the conical nozzle 15, and the annular tube 16 is connected to a high-pressure tube 24. High-pressure nitrogen is transported through the high-pressure tube 24, and the electrolyte is transported under high pressure by the high-pressure nitrogen. Under a pressure of 1 to 2 MPa, the stable time required after injection of the electrolyte will be reduced. And a first spring 19 and a piston plate 20 are arranged inside the inclined nozzle 17. That is, the piston plate 20 is convenient for blocking the leakage hole 21. Under the elastic action of the first spring 19, the piston plate 20 is located on one side of the leakage hole 21, which can prevent the electrolyte from flowing back into the interior of the annular tube 16. When the high-pressure tube 24 transports high-pressure nitrogen, the piston plate 20 is pushed open, and at this time, the high-pressure nitrogen flows out from the leakage hole 21, so that the high-pressure nitrogen can pressurize the electrolyte in the Venturi tube 12, increase the pressure of the electrolyte, and reduce the stable time required after injection of the electrolyte.
[0040] Embodiment 3: The lifting and adjusting mechanism 9 includes a servo electric cylinder 901 fixedly installed at the end of the mounting bracket 6. Telescopic cylinders 902 are fixedly installed on the lower parts of both sides of the mounting bracket 6, and telescopic rods 905 are movably installed inside the telescopic cylinders 902. A number of long grooves 903 are formed in the telescopic cylinders 902. A number of clamping blocks 908 are fixedly provided at the upper ends of the telescopic rods 905, and the number of clamping blocks 908 are respectively movably clamped and connected inside the number of long grooves 903. A contact plate 911 is fixedly installed at the bottom end of the telescopic rod 905. A first limit ring 904 is welded to the upper end of the telescopic cylinder 902, and a second limit ring 906 is welded to the bottom end of the telescopic rod 905. A second spring 907 is fixedly installed between the first limit ring 904 and the second limit ring 906. A stepped injection nozzle 912 and a stepped negative pressure nozzle 913 are movably installed on the contact plate 911. Adjusting cavities 915 are formed at the bottom ends of the telescopic rods 905 on both sides. A push rod 916 is movably installed inside the adjusting cavity 915. One side of the push rod 916 is connected to a third spring 917, and one end of the third spring 917 is fixedly connected to the inner wall of the adjusting cavity 915. A clamping rod 918 is fixedly provided on one side of the bottom end of the push rod 916. Elastic pieces 919 are fixedly provided at the upper ends of the stepped injection nozzle 912 and the stepped negative pressure nozzle 913, and both ends of the elastic piece 919 are snap-fitted with the clamping rod 918 through a buckle 920.
[0041] It should be noted that the lifting adjustment is achieved by the servo electric cylinder 901, and in order to maintain the stability of the lifting adjustment, the position is limited by the telescopic cylinder 902 and the telescopic rod 905 to maintain the balance stability of the lifting adjustment, and a second spring 907 is provided between the telescopic cylinder 902 and the telescopic rod 905, which can prevent the impact during the collision and achieve the reset adjustment, and the lifting adjustment mechanism 9 is used to achieve the lifting adjustment of the stepped injection nozzle 912 and the stepped negative pressure nozzle 913, so that the stepped injection nozzle 912 and the stepped negative pressure nozzle 913 can fit together. At the upper part of the battery, when the contact plate 911 contacts the upper part of the battery, the contact plate 911 no longer moves, and the servo electric cylinder 901 continues to push, so that the stepped injection nozzle 912 and the stepped negative pressure nozzle 913 push the elastic sheet 919. When the elastic sheet 919 is pushed, the buckle 920 at the bottom of the elastic sheet 919 pulls the clamping rod 918, so that the top rod 916 can rotate, and the top end of the top rod 916 shrinks to the inside of the telescopic rod 905, and a delay ring 909 is provided at the lower end of the telescopic rod 905, and a delay ring 909 is provided between the delay rings 909 on both sides. The collision plate 910, the servo electric cylinder 901 pushes the collision plate 910 downward, and the collision plate 910 drives the delay rings 909 on both sides to move downward, so as to clamp the ejector rod 916. At this time, the servo electric cylinder 901 pushes the collision plate 910 downward, so that the collision plate 910 drives the elastic sheet 919 to press downward, thereby enabling the stepped injection nozzle 912 and the stepped negative pressure nozzle 913 to continuously move downward, so that the stepped injection nozzle 912 and the stepped negative pressure nozzle 913 can be clamped in the upper end of the battery, thereby improving the clamping tightness of the stepped injection nozzle 912 and the stepped negative pressure nozzle 913 with the battery. , to prevent leakage during the electrolyte injection process, and the stepped injection nozzle 912 is connected to the interface tube 27 at the end of the third vortex tube 14 through a telescopic hose to realize the transportation of the electrolyte, and the stepped negative pressure nozzle 913 is connected to the vacuum pump to realize the vacuum extraction in the battery, which is convenient for the rapid injection of the electrolyte and the infiltration of the electrolyte in the battery, and a fourth spring 914 is provided between the stepped injection nozzle 912, the stepped negative pressure nozzle 913 and the contact plate 911 to facilitate the resetting of the stepped injection nozzle 912 and the stepped negative pressure nozzle 913.
[0042] Embodiment 4: The setting of the first vortex tube 11a and the ultrasonic tube 18a also includes other structures, including setting the ultrasonic tube 18b on the outer wall of the first vortex tube 11b, so that the ultrasonic tube 18b is outside the first vortex tube 11b, and does not need to be set inside the first vortex tube 11b, thereby reducing corrosion damage to the ultrasonic tube 18b caused by the electrolyte, and by vibrating the first vortex tube 11b, bubbles on the inner wall of the first vortex tube 11b can be eliminated; And it includes embedding and arranging the ultrasonic tube 18c in the first scroll tube 11c part. It is not necessary to be arranged inside the first scroll tube 11c, which reduces the corrosion damage to the ultrasonic tube 18c caused by the electrolyte. And by vibrating the first scroll tube 11c, the bubbles in the electrolyte in the ultrasonic tube 18c can be eliminated.
[0043] The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims
1. A multi-stage vortex layered injection device for automobile battery electrolyte, comprising an operating table (1), characterized in that: A rotating platform (2) is movably mounted on the operating table (1); It comprises an installation box (7), a defoaming box (10) is fixedly installed inside the installation box (7), a first vortex tube (11a) is fixedly connected to the lower part of the defoaming box (10), an output end of the first vortex tube (11a) is connected to a venturi tube (12), an output end of the venturi tube (12) is connected to a second vortex tube (13), and an output end of the second vortex tube (13) is connected to a third vortex tube (14); A lifting and lowering adjustment mechanism (9) for contacting the battery is fixedly mounted on the end of the mounting bracket (6).
2. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 1, characterized in that: The upper end of the defoaming box (10) is fixedly connected to a feed pipe (25), and the feed pipe (25) is connected to an external material storage tank. The upper end of the defoaming box (10) is fixedly connected to a first negative pressure pipe (26), and the first negative pressure pipe (26) is connected to an external vacuum pump.
3. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 1, characterized in that: An ultrasonic tube (18a) is suspended inside the first vortex tube (11a), and two ends of the ultrasonic tube (18a) are respectively connected to an ultrasonic input tube (23) and an ultrasonic output tube (22), and the ultrasonic input tube (23) and the ultrasonic output tube (22) are connected to an external ultrasonic generator.
4. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 1, characterized in that: A conical nozzle (15) is provided at the end of the first vortex tube (11a), the conical nozzle (15) being fixed inside one end of the venturi tube (12), an annular tube (16) being fixedly mounted outside the conical nozzle (15), one side of the annular tube (16) being fixedly connected to a high-pressure tube (24), and the other side of the annular tube (16) being connected to a plurality of inclined nozzles (17).
5. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 4, characterized in that: A first spring (19) is fixedly arranged inside the inclined nozzle (17), a piston plate (20) is fixedly arranged at one end of the first spring (19), a plurality of leakage holes (21) are opened on the outside of the inclined nozzle (17), and the piston plate (20) is located on one side of the leakage hole (21).
6. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 1, characterized in that: The lifting and lowering adjustment mechanism (9) comprises a servo electric cylinder (901) fixedly mounted on the end of the mounting bracket (6), telescopic cylinders (902) are fixedly mounted on the lower parts of both sides of the mounting bracket (6), and telescopic rods (905) are movably mounted inside the telescopic cylinders (902).
7. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 6, characterized in that: The telescopic cylinder (902) is provided with a plurality of long slots (903); a plurality of clamping blocks (908) are fixedly provided on the upper end of the telescopic rod (905); the plurality of clamping blocks (908) are movably engaged and connected to the interior of the plurality of long slots (903); and a contact plate (911) is fixedly installed on the bottom end of the telescopic rod (905).
8. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 7, characterized in that: A first limiting ring (904) is welded to the upper end of the telescopic cylinder (902), a second limiting ring (906) is welded to the lower end of the telescopic rod (905), and a second spring (907) is fixedly installed between the first limiting ring (904) and the second limiting ring (906).
9. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 8, characterized in that: A stepped injection nozzle (912) and a stepped negative pressure nozzle (913) are movably mounted on the contact plate (911); an adjustment cavity (915) is provided at the bottom ends of the telescopic rods (905) on both sides; a push rod (916) is movably mounted inside the adjustment cavity (915); a third spring (917) is connected to one side of the push rod (916); and one end of the third spring (917) is fixedly connected to the inner wall of the adjustment cavity (915).
10. The multi-stage vortex layered injection device for automobile battery electrolyte according to claim 9, characterized in that: A clamping rod (918) is fixedly provided on one side of the bottom end of the top rod (916), and an elastic sheet (919) is fixedly provided on the upper ends of the stepped injection nozzle (912) and the stepped negative pressure nozzle (913), and both ends of the elastic sheet (919) are clamped and connected to the clamping rod (918) via buckles (920).