Sodium ion battery liquid injector

Abstract

The utility model relates to a sodium ion battery liquid injector which comprises a support frame, and a shaking component is arranged in the support frame; the shaking assembly comprises a motor, the motor is fixedly connected into the supporting frame, a transmission shaft is fixedly connected to one end of an output shaft of the motor, a rotating block is fixedly connected to the end, away from the motor, of the transmission shaft, a fixed block is fixedly connected into the supporting frame, and two cams are fixedly connected to the outer surface of the transmission shaft. According to the sodium ion battery electrolyte injector, after an electrolyte injection box is filled with electrolyte by an electrolyte injection pipe, two second hydraulic rods are started to break away from limitation on the electrolyte injection pipe, and then a motor is started to drive a transmission shaft to rotate in a fixed block, so that two cams drive a bearing plate to shake up and down in a small amplitude under elastic connection of a limiting spring; and the movable plate slides under the guide of the guide plate, so that the electrolyte in the electrolyte injection box can be more safely and quickly infiltrated into the battery cell diaphragm, and the safety and the use effect of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy battery production equipment, in particular to a sodium ion battery liquid injector. Background Art

[0002] With the vigorous development of the new energy industry, sodium-ion batteries are also booming in addition to the mainly used lithium-ion batteries. The principle of sodium-ion batteries is similar to that of lithium batteries, relying on the reversible migration of sodium ions between the positive and negative electrodes to realize the charging and discharging of the battery. Compared with lithium-ion batteries, sodium-ion batteries differ mainly in positive and negative electrode materials, electrolyte solutes and current collectors. The positive electrode materials of sodium-ion batteries are iron-manganese-copper / nickel ternary system and phosphoric acid system, and the negative electrode material is hard carbon. The electrolyte solute uses sodium hexafluorophosphate instead of lithium hexafluorophosphate, and the current collector uses cheaper aluminum foil. Therefore, sodium-ion batteries have become the motivation for various companies to develop and produce due to their good cost advantages.

[0003] According to Chinese patent CN216980833U, a sodium ion battery injector is provided. When injecting, the battery cell is first placed in the injection box, and the first hydraulic rod is started. The first hydraulic rod drives the horizontal plate and finally drives the injection sealing device to press down. While the injection box is sealed, the battery cell is pressed against the bottom of the injection box. At this time, the injection box is evacuated into a vacuum through a vacuum tube, and then the electrolyte in the injection tube is continuously pressurized until the pressure reaches the set value of the pressure valve. At this time, the electrolyte will rush into the injection box and fill it up, and then the drive motor is started to drive the injection box and the battery cell to rotate together, and the injected electrolyte is evenly infiltrated into the battery cell diaphragm through centrifugal force.

[0004] In the above device, after the electrolyte is injected into the liquid injection box, it is only under the action of centrifugation that the electrolyte is not effectively infiltrated into the battery cell diaphragm. The liquid injection box is easily thrown out under the centrifugal force. Therefore, a sodium ion battery liquid injector is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a sodium ion battery liquid injector, which has the advantages of using an up and down shaking method to infiltrate the electrolyte into the battery cell diaphragm when the electrolyte infiltrates into the battery cell diaphragm, which has the advantages of better effect and higher safety. It solves the problem that the existing sodium ion battery uses a rotating centrifugal force method to infiltrate the battery cell after injecting the electrolyte, which has poor effect and is prone to the liquid injection box flying out.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sodium ion battery injector, comprising a support frame, wherein a shaking assembly is arranged inside the support frame;

[0007] The shaking assembly includes a motor, which is fixedly connected to the inside of a support frame, one end of the motor output shaft is fixedly connected to a transmission shaft, the end of the transmission shaft away from the motor is fixedly connected to a rotating block, the inside of the support frame is fixedly connected to a fixed block, the outer surface of the transmission shaft is fixedly connected to two cams, the left and right inner walls of the support frame are fixedly connected to placement plates, the tops of the two placement plates are movably connected to the same bearing plate, the tops of the bearing plates are fixedly connected to a number of limit springs, the tops of the several limit springs are fixedly connected to the same movable plate, and the inner walls on both sides of the support frame are fixedly connected to guide plates.

[0008] Furthermore, a first hydraulic rod is fixedly connected to the top of the support frame, a telescopic end of the first hydraulic rod is fixedly connected to a cross plate, two second hydraulic rods are fixedly connected to the bottom of the cross plate, and injection tubes are detachably connected to opposite sides of the two second hydraulic rods.

[0009] Furthermore, a liquid injection box is fixedly connected to the top of the movable plate, and a sealing device body is arranged on the top of the liquid injection box.

[0010] Furthermore, a mounting frame is fixedly connected inside the support frame, the motor is fixedly connected inside the support frame through the mounting frame, a rotating groove is opened inside the fixed block, and the rotating block rotates inside the fixed block through the rotating groove.

[0011] Furthermore, the two placement plates are both rectangular plates, the two cams are slidably connected to the bearing plate, and a plurality of limit springs are fixedly connected to telescopic rods inside.

[0012] Furthermore, protrusions are provided on both the left and right sides of the movable plate, and the movable plate is slidably connected to the two guide plates through the protrusions.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The sodium ion battery injector, after the injection tube fills the injection box with electrolyte, starts the two second hydraulic rods to break away from the restriction on the injection tube, and then starts the motor to drive the transmission shaft to rotate inside the fixed block, so that the two cams drive the bearing plate to shake up and down slightly under the elastic connection of the limit spring, and the movable plate slides under the guidance of the guide plate, so that the electrolyte inside the injection box can be more safely and quickly infiltrated into the battery cell diaphragm, thereby improving the safety and use effect of the device.

[0015] 2. The sodium-ion battery injector has two placement plates fixedly connected inside the support frame, so that when the two cams are separated from the supporting plate, the supporting plate can fall on the top of the two placement plates for limiting, so as to avoid the injection box from tilting and tilting, which may cause the internal electrolyte to be unable to completely infiltrate the battery cell diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main cross-sectional view of the structure of the utility model;

[0017] Figure 2 It is a partial top view of the structure of the utility model.

[0018] In the figure: 1. support frame; 2. motor; 3. transmission shaft; 4. rotating block; 5. fixed block; 6. cam; 7. placement plate; 8. bearing plate; 9. limit spring; 10. movable plate; 11. guide plate; 12. injection box; 13. first hydraulic rod; 14. cross plate; 15. second hydraulic rod; 16. injection pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 A sodium ion battery injector in this embodiment includes a support frame 1, and a shaking component is arranged inside the support frame 1.

[0021] The shaking assembly includes a motor 2, which is fixedly connected to the inside of the support frame 1. The inside of the support frame 1 is fixedly connected with a mounting frame, and the motor 2 is fixedly connected to the inside of the support frame 1 through the mounting frame.

[0022] One end of the output shaft of the motor 2 is fixedly connected to the transmission shaft 3, and the end of the transmission shaft 3 away from the motor 2 is fixedly connected to the rotating block 4. The interior of the support frame 1 is fixedly connected to the fixed block 5, and a rotating groove is opened inside the fixed block 5. The rotating block 4 rotates inside the fixed block 5 through the rotating groove.

[0023] Two cams 6 are fixedly connected to the outer surface of the transmission shaft 3 , and placement plates 7 are fixedly connected to the inner walls on the left and right sides of the support frame 1 . The two placement plates 7 are both rectangular plates.

[0024] The tops of the two placement plates 7 are movably connected to a same bearing plate 8 , and the two cams 6 are slidably connected to the bearing plate 8 .

[0025] A plurality of limit springs 9 are fixedly connected to the top of the bearing plate 8, and telescopic rods are fixedly connected inside the plurality of limit springs 9.

[0026] The tops of several limit springs 9 are fixedly connected to the same movable plate 10, the inner walls on both sides of the support frame 1 are fixedly connected to guide plates 11, and the left and right sides of the movable plate 10 are provided with protrusions, and the movable plate 10 is slidably connected to the two guide plates 11 through the protrusions.

[0027] The top of the movable plate 10 is fixedly connected with a liquid injection box 12 , and the top of the liquid injection box 12 is provided with a sealing device body.

[0028] A first hydraulic rod 13 is fixedly connected to the top of the support frame 1, a cross plate 14 is fixedly connected to the telescopic end of the first hydraulic rod 13, two second hydraulic rods 15 are fixedly connected to the bottom of the cross plate 14, and an injection pipe 16 is detachably connected to the opposite side of the two second hydraulic rods 15.

[0029] In this embodiment, two placement plates 7 are fixedly connected inside the support frame 1, so that when the two cams 6 are in a state of being separated from the supporting plate 8, the supporting plate 8 can fall on the top of the two placement plates 7 for limiting the position, thereby preventing the liquid injection box 12 from tilting and tilting, which would cause the internal electrolyte to be unable to completely infiltrate the battery cell diaphragm.

[0030] In this embodiment, since a telescopic rod is arranged inside the limit spring 9, the telescopic rod can play a role of stroke limit when the limit spring 9 elastically shakes, thereby avoiding the limit spring 9 from being compressed to the minimum state and affecting its service life.

[0031] In this embodiment, the sealing device body includes a liquid injection sealing device including a sealing block, a liquid injection tube 16, a pressure valve and a vacuum tube. The sealing block includes a sealing part and a pressing part. The sealing part is used to seal the liquid injection box 12, and the pressing part is used to press down the battery cell. The liquid injection tube 16 passes through the geometric center of the sealing block and extends into the liquid injection box 12. The pressure valve is installed on the liquid injection tube 16. The vacuum tube is located on one side of the liquid injection tube 16 and is used to evacuate the liquid injection box 12. A plurality of electrolyte holes are also provided on the pressing part of the sealing block. The sealing block that is pressed down can seal both the liquid injection box 12 and the battery cell. This technology is already an existing public technology.

[0032] Among them, when injecting liquid, first place the battery cell in the injection box 12, start the first hydraulic rod 13 to drive the horizontal plate 14 and finally drive the injection sealing device to press down, and press the battery cell to the bottom of the injection box 12 while sealing the injection box 12. At this time, the injection box 12 is evacuated into a vacuum through the vacuum tube, and then the electrolyte in the injection tube 16 is continuously pressurized until the pressure reaches the set value of the pressure valve. At this time, the electrolyte will rush into the injection box 12 and fill it. This workflow is already an existing public solution.

[0033] The working principle of the above embodiment is:

[0034] The sodium ion battery injector, after the injection tube 16 fills the injection box 12 with electrolyte, starts the two second hydraulic rods 15 to break away from the restriction on the injection tube 16, and then starts the motor 2 to drive the transmission shaft 3 to rotate inside the fixed block 5, so that the two cams 6 drive the supporting plate 8 to shake up and down slightly under the elastic connection of the limit spring 9, and the movable plate 10 slides under the guidance of the guide plate 11, so that the electrolyte inside the injection box 12 can be more safely and quickly infiltrated into the battery cell diaphragm, thereby improving the safety and use effect of the device.

[0035] It should be noted that the standard parts used in the application can be purchased from the market, special-shaped parts can be customized according to the description in the specification and drawings, and the specific connection methods of each part adopt mature bolts, rivets, welding, etc. in the prior art, and conventional means. Machinery, parts and equipment all adopt conventional models in the prior art; plus the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sodium ion battery injector, comprising a support frame (1), Features: A shaking assembly is arranged inside the support frame (1); The shaking assembly comprises a motor (2), wherein the motor (2) is fixedly connected to the inside of a support frame (1), one end of the output shaft of the motor (2) is fixedly connected to a transmission shaft (3), and the end of the transmission shaft (3) away from the motor (2) is fixedly connected to a rotating block (4), the inside of the support frame (1) is fixedly connected to a fixed block (5), and the outer surface of the transmission shaft (3) is fixedly connected to two cams (6), the left and right inner walls of the support frame (1) are fixedly connected to placement plates (7), the tops of the two placement plates (7) are movably connected to the same bearing plate (8), the tops of the bearing plate (8) are fixedly connected to a plurality of limit springs (9), and the tops of the plurality of limit springs (9) are fixedly connected to the same movable plate (10), and the inner walls on both sides of the support frame (1) are fixedly connected to guide plates (11).

2. A sodium ion battery injector according to claim 1, Features: A first hydraulic rod (13) is fixedly connected to the top of the support frame (1), a telescopic end of the first hydraulic rod (13) is fixedly connected to a transverse plate (14), two second hydraulic rods (15) are fixedly connected to the bottom of the transverse plate (14), and opposite sides of the two second hydraulic rods (15) are detachably connected to injection pipes (16).

3. A sodium ion battery injector according to claim 1, Features: The top of the movable plate (10) is fixedly connected to a liquid injection box (12), and the top of the liquid injection box (12) is provided with a sealing device body.

4. A sodium ion battery injector according to claim 1, Features: The support frame (1) is fixedly connected to a mounting frame inside, the motor (2) is fixedly connected to the support frame (1) via the mounting frame, a rotation groove is provided inside the fixed block (5), and the rotating block (4) rotates inside the fixed block (5) via the rotation groove.

5. A sodium ion battery injector according to claim 1, Features: The two placement plates (7) are both rectangular plates, the two cams (6) are slidably connected to the bearing plate (8), and a plurality of limit springs (9) are fixedly connected inside with telescopic rods.

6. A sodium ion battery injector according to claim 1, Features: The movable plate (10) is provided with protrusions on both the left and right sides, and the movable plate (10) is slidably connected to the two guide plates (11) via the protrusions.

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