Liquid injection device for preparation of high-energy-density lithium battery

Abstract

The liquid injection device comprises a first supporting frame, a box body is arranged above the first supporting frame, an electric heating pipe is arranged between a partition plate and the box body, a first motor is arranged in the middle of the upper portion of the box body, and a rotating shaft of the first motor penetrates through the box body to be fixedly connected with a stirring rod; a plurality of stirring blades which are distributed at equal intervals are arranged on the stirring rod, first hydraulic cylinders are arranged on the two sides of the upper end of the first supporting frame, the stroke ends of the two first hydraulic cylinders are fixedly connected with a movable plate, a plurality of liquid injection assemblies which are distributed at equal intervals are arranged below the movable plate, and the box body communicates with the liquid injection assemblies through hoses. The liquid injection device is good in moving stability, can quickly position a lithium battery, is high in protection performance, effectively avoids the phenomenon of unsmooth flowing of electrolyte through a heating mode, and improves the practicability of the liquid injection device.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery preparation, and in particular to a liquid injection device for preparing a high energy density lithium battery. Background Art

[0002] During the production process of lithium batteries, electrolyte needs to be added to the inside of the lithium battery. The lithium battery electrolyte is the carrier for ion transmission in the battery and is generally composed of lithium salts and organic solvents. A lithium battery injection device with announcement number CN210113656U comprises an injection component and a fixture component, the injection component comprises a liquid storage tank, the liquid storage tank is provided with a first injection pipe, the connection position of the first injection pipe and the liquid storage tank is provided with an injection groove, the liquid storage tank is provided with a positioning tube, a positioning block is fixed at one end of the positioning tube, the positioning block can close the first injection pipe by cooperating with the injection groove, the lithium battery is provided with an injection cover, the injection cover is provided with a second injection pipe, the top end of the second injection pipe can be extended into the first injection pipe, the second injection pipe is provided with a push rod, the push rod can extend out of the top end of the second injection pipe, when the second injection pipe is extended into the first injection pipe, the push rod can push the positioning block out of the liquid storage tank, and then the electrolyte in the liquid storage tank can flow into the second injection pipe through the first injection pipe, and then the lithium battery is filled with electrolyte through the second injection pipe. Although the above-mentioned lithium battery injection device can perform infusion on lithium batteries very well, when the above-mentioned device is in use, when the electrolyte temperature is too low, its fluidity will decrease, thereby affecting the infusion time of the device, and then affecting the working efficiency of the device. The above-mentioned device cannot heat and control the temperature of the electrolyte very well, thereby reducing its infusion speed. For this reason, we propose a liquid injection device for preparing high energy density lithium batteries. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a liquid injection device for preparing high energy density lithium batteries. The present invention solves the problem that when the above device is in use, when the electrolyte temperature is too low, its fluidity will decrease, thereby affecting the infusion time of the device, and further affecting the working efficiency of the device, and the above device cannot heat and control the temperature of the electrolyte well, thereby reducing its infusion speed.

[0004] A liquid injection device for preparing a high-energy-density lithium battery in the present invention comprises a first support frame, a box body is provided above the first support frame, partitions are provided on both sides of the box body, an electric heating tube is provided between the partition and the box body, a first motor is provided in the middle part above the box body, the rotating shaft of the first motor passes through the box body and is fixedly connected to a stirring rod, a plurality of stirring blades arranged equidistantly are provided on the stirring rod, first hydraulic cylinders are provided on both sides of the upper end of the first support frame, two stroke ends of the first hydraulic cylinders are fixedly connected to a movable plate, a plurality of liquid injection components arranged equidistantly are provided below the movable plate, the box body is connected to the liquid injection component through a hose, a positioning component is provided on the first support frame below the movable plate, a second support frame is provided at the lower end of the first support frame, and a transmission component is provided above the second support frame.

[0005] In the above scheme, the injection assembly includes a fixed rod, which is fixedly connected to the movable plate. The lower end of the fixed rod is sleeved with an outer tube, and the lower part of the outer tube is fixedly connected to the injection head. The injection head is connected to the box body through a hose, and the fixed rod is located between the outer tube and the movable plate and is sleeved with a spring.

[0006] In the above scheme, the positioning assembly includes a connecting rod, and two connecting rods are provided. The two connecting rods are respectively located on both sides of the upper end of the first support frame, and the two connecting rods are fixedly connected to the fixed plate below. A second hydraulic cylinder is provided on both sides above the fixed plate, and the stroke end of the second hydraulic cylinder is fixedly connected to the connecting plate. The two connecting plates are fixedly connected to the clamping plate below, and a rubber pad is provided on the side where the clamping plate and the fixed plate are close to each other. The fixed plate is located on one side of the second hydraulic cylinder and is plugged with a guide rod, and the guide rod is fixedly connected to the connecting plate.

[0007] In the above solution, telescopic rods are provided on both sides above the movable plate, and the top of the telescopic rods is fixedly connected to the first support frame.

[0008] In the above scheme, the transmission component includes a side plate, the side plate is fixedly connected to the second support frame, one side of the two side plates is provided with an active roller shaft, one side of the active roller shaft passes through the side plate and is fixedly connected to the second motor rotating shaft, and the two side plates are provided with a driven roller shaft on the side away from the active roller shaft, and the active roller shaft and the driven roller shaft are connected by a transmission belt.

[0009] In the above solution, a limiting component is provided above the transmission component.

[0010] In the above scheme, the limiting assembly includes a fixed seat, which is fixedly connected to the side plate. The fixed seat is provided with multiple fixed seats and arranged equidistantly. A movable rod is inserted into the upper end of the fixed seat. The movable rod is fixedly connected to the mounting plate close to the conveyor belt side. Limiting rods are provided at both ends of the mounting plate away from the movable rod side, and a fastening bolt is provided in the middle of the upper part of the fixed seat.

[0011] In the above solution, a liquid inlet is provided on one side of the upper part of the box body, a sealing cover is provided on the liquid inlet, and anti-slip grooves are provided on the outer side of the sealing cover.

[0012] The advantages and beneficial effects of the present invention are as follows: the present invention provides a liquid injection device for preparing high energy density lithium batteries, through the mutual cooperation between the active roller and the driven roller, the conveyor belt can be used to transmit the lithium battery to be injected, through the mutual cooperation between the clamping plate and the fixed plate, the upper end of the lithium battery can be clamped, and the liquid injection assembly can be inserted into the liquid injection port of the lithium battery by adjusting the height of the liquid injection assembly. When the liquid injection head contacts the liquid injection port of the lithium battery, the elastic force of the spring can effectively buffer the pressure on the liquid injection assembly, and when the electric heating tube is working, the electric heating tube can heat the electrolyte inside the box, thereby avoiding the phenomenon of poor flow of the electrolyte due to too low temperature. This liquid injection device has a simple structure, is easy to operate, has good mobile stability, can quickly position the lithium battery, has strong protection during the liquid injection process, and effectively avoids the phenomenon of poor flow of the electrolyte by heating, thereby improving the practicality of the liquid injection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a front view of the present invention;

[0016] Figure 3 It is a schematic structural diagram of part A of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of part B of the present invention

[0018] Figure 5 It is a cross-sectional view of the liquid injection component of the present invention.

[0019] In the figure: 1, the first support frame 2, the box body 3, the partition 4, the electric heating tube 5, the first motor 6, the stirring rod 7, the stirring blade 8, the first hydraulic cylinder 9, the movable plate 10, the telescopic rod 11, the injection assembly 111, the fixed rod 112, the outer tube 113, the injection head 114, the spring 12, the hose 13, the positioning assembly 131, the connecting rod 132, the fixed plate 133, the second hydraulic cylinder 134, the connecting plate 135, the clamping plate 136, the rubber pad 137, the guide rod 14, the second support frame 15, the transmission assembly 151, the side plate 152, the active roller shaft 153, the second motor 154, the driven roller shaft 155, the transmission belt 16, the limit assembly 161, the fixed seat 162, the movable rod 163, the mounting plate 164, the limit rod 165, the fastening bolt 17, the liquid inlet 18, the sealing cover 19, and the anti-slip pattern. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] like Figure 1-5As shown, the present invention is a liquid injection device for preparing a high energy density lithium battery, comprising a first support frame 1, a box body 2 is arranged above the first support frame 1, partitions 3 are arranged on both sides of the box body 2, and an electric heating tube 4 is arranged between the partition 3 and the box body 2. When the electric heating tube 4 is working, the electric heating tube 4 can heat the electrolyte inside the box body 2, thereby avoiding the phenomenon of poor flow of the electrolyte due to too low temperature. A first motor 5 is arranged in the middle part above the box body 2, and the rotating shaft of the first motor 5 passes through the box body 2 and is fixedly connected to a stirring rod 6. The stirring rod 6 is provided with a plurality of stirring blades 7 arranged at equal distances. When the first motor 5 is working, the first motor 5 drives the stirring rod 6 to rotate, and the stirring blade 7 is rotated by the transmission of the stirring rod 6. The electrolyte inside the box body 2 can be stirred by the rotating stirring blade 7, so that the heated electrolyte can be Uniform mixing, first hydraulic cylinders 8 are provided on both sides of the upper end of the first support frame 1, and the two stroke ends of the first hydraulic cylinders 8 are fixedly connected to the movable plate 9. A plurality of equidistantly arranged injection components 11 are provided below the movable plate 9. The first hydraulic cylinder 8 can push the movable plate 9 to move in the vertical direction when working, and the injection component 11 is also moved by the transmission of the movable plate 9. The injection component 11 can be inserted into the lithium battery injection port by adjusting the height of the injection component 11. The box body 2 is connected to the injection component 11 through a hose 12. The first support frame 1 is provided with a positioning component 13 below the movable plate 9, and the positioning component 13 can position the lithium battery. A second support frame 14 is provided at the lower end of the first support frame 1, and a transmission component 15 is provided above the second support frame 14. The transmission component 15 can transmit the lithium battery to be injected.

[0022] The injection assembly 11 includes a fixed rod 111, which is fixedly connected to the movable plate 9. The lower end of the fixed rod 111 is sleeved with an outer tube 112. The lower end of the outer tube 112 is fixedly connected to an injection head 113. The injection head 113 is connected to the box body 2 through a hose 12. The fixed rod 111 is located between the outer tube 112 and the movable plate 9 and is sleeved with a spring 114. When the injection assembly 11 moves, the injection head 113 is inserted into the lithium battery injection port. When the injection head 113 contacts the lithium battery injection port, the fixed rod 111 expands and contracts inside the outer tube 112, and the spring 114 is compressed. The elastic force of the spring 114 can effectively buffer the pressure on the injection assembly 11.

[0023] The positioning assembly 13 includes a connecting rod 131, and two connecting rods 131 are provided. The two connecting rods 131 are respectively located on both sides of the upper end of the first support frame 1, and the lower parts of the two connecting rods 131 are fixedly connected to the fixing plate 132. The upper parts of the fixing plate 132 are provided with a second hydraulic cylinder 133 on both sides, and the stroke end of the second hydraulic cylinder 133 is fixedly connected to the connecting plate 134. The lower parts of the two connecting plates 134 are fixedly connected to the clamping plate 135. The clamping plate 135 and the fixing plate 132 are close to each other. A rubber pad 136 is provided on the side, and the rubber pad 136 can protect the contact surface between the clamping plate 135 and the fixing plate 132. The fixed plate 132 is located on one side of the second hydraulic cylinder 133 and is plugged with a guide rod 137. The guide rod 137 is movably connected to the fixed plate 132. The mutual cooperation between the guide rod 137 and the fixed plate 132 effectively improves the movement stability between the connecting plate 134 and the clamping plate 135. The guide rod 137 is fixedly connected to the connecting plate 134. When the second hydraulic cylinder 133 is working, the second hydraulic cylinder 133 drives the connecting plate 134 to move horizontally. Through the transmission of the connecting plate 134, the clamping plate 135 also moves accordingly. Through the mutual cooperation between the clamping plate 135 and the fixed plate 132, the upper end of the lithium battery can be clamped.

[0024] Telescopic rods 10 are provided on both sides above the movable plate 9 , and the top of the telescopic rods 10 is fixedly connected to the first support frame 1 . The provision of the telescopic rods 10 effectively improves the movement stability of the movable plate 9 .

[0025] The transmission assembly 15 includes a side plate 151, which is fixedly connected to the second support frame 14. An active roller shaft 152 is provided on one side of the two side plates 151. One side of the active roller shaft 152 penetrates the side plate 151 and is fixedly connected to the rotating shaft of the second motor 153. A driven roller shaft 154 is provided on the side of the two side plates 151 away from the active roller shaft 152. The active roller shaft 152 and the driven roller shaft 154 are connected by transmission through a transmission belt 155. The active roller shaft 152 and the driven roller shaft 154 are both movably connected to the side plate 151. When the second motor 153 is working, the second motor 153 drives the active roller shaft 152 to rotate, and the driven roller shaft 154 is also rotated through the transmission of the transmission belt 155. The mutual cooperation between the active roller shaft 152 and the driven roller shaft 154 enables the transmission belt 155 to transmit the lithium battery to be injected with liquid.

[0026] A limiting assembly 16 is provided above the transmission assembly 15 .

[0027] The limiting assembly 16 includes a fixing seat 161, which is fixedly connected to the side plate 151. The fixing seat 161 is provided with multiple fixing seats 161 and arranged equidistantly. A movable rod 162 is inserted into the upper end of the fixing seat 161. The movable rod 162 is fixedly connected to the mounting plate 163 on the side close to the conveyor belt 155. Limiting rods 164 are provided at both ends of the mounting plate 163 away from the movable rod 162. A fastening bolt 165 is provided in the middle of the upper part of the fixing seat 161. The movable rod 162 is movably connected to the fixing seat 161. By adjusting the position of the movable rod 162, the position of the limiting rod 164 is also changed. By adjusting the position of the limiting rod 164, the moving direction of the lithium battery on the conveyor belt 155 can be guided and limited. The fastening bolt 165 can fix the position of the movable rod 162.

[0028] A liquid inlet 17 is provided on one side of the upper part of the box body 2, and a sealing cover 18 is provided on the liquid inlet 17. Anti-slip grooves 19 are provided on the outer side of the sealing cover 18. Electrolyte can be added to the inside of the box body 2 through the liquid inlet 17. The provision of the anti-slip grooves 19 makes it easier to open and close the sealing cover 18.

[0029] Specifically, in the present invention, when the second motor 153 is working, the second motor 153 drives the active roller 152 to rotate, and the driven roller 154 is also rotated through the transmission of the transmission belt 155. The active roller 152 and the driven roller 154 cooperate with each other, so that the transmission belt 155 can transmit the lithium battery to be injected. By adjusting the position of the limit rod 164, the moving direction of the lithium battery on the transmission belt 155 can be guided and limited. When the lithium battery moves to the bottom of the injection assembly 11, the second hydraulic cylinder 133 drives the connecting plate 134 to move in the horizontal direction. The transmission of the connecting plate 134 makes the clamping plate 135 move accordingly. The clamping plate 135 and the fixed The plates 132 cooperate with each other to clamp the upper end of the lithium battery. The first hydraulic cylinder 8 pushes the movable plate 9 to move in the vertical direction. The transmission of the movable plate 9 enables the injection assembly 11 to move as well. The height of the injection assembly 11 is adjusted so that the injection assembly 11 can be inserted into the injection port of the lithium battery. When the injection head 113 contacts the injection port of the lithium battery, the fixed rod 111 expands and contracts inside the outer tube 112, and the spring 114 is compressed. The elastic force of the spring 114 can effectively buffer the pressure on the injection assembly 11. When the electric heating tube 4 is working, the electric heating tube 4 can heat the electrolyte inside the box 2, thereby avoiding the phenomenon of poor flow of the electrolyte due to too low temperature.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid injection device for preparing a high energy density lithium battery, comprising a first support frame (1), characterized in that: A box body (2) is arranged above the first support frame (1), partitions (3) are arranged on both sides of the box body (2), and an electric heating pipe (4) is arranged between the partitions (3) and the box body (2). A first motor (5) is arranged in the middle of the upper part of the box body (2), and the rotating shaft of the first motor (5) passes through the box body (2) and is fixedly connected to the stirring rod (6). The stirring rod (6) is provided with a plurality of stirring blades (7) arranged at equal distances. First hydraulic cylinders (8) are arranged on both sides of the upper end of the first support frame (1), and the stroke ends of the two first hydraulic cylinders (8) are fixedly connected to the movable plate (9). A plurality of injection assemblies (11) arranged at equal distances are arranged below the movable plate (9), and the box body (2) is connected to the injection assemblies (11) through a hose (12). A positioning assembly (13) is arranged below the movable plate (9) on the first support frame (1), and a second support frame (14) is arranged at the lower end of the first support frame (1), and a transmission assembly (15) is arranged above the second support frame (14).

2. A liquid injection device for preparing a high energy density lithium battery according to claim 1, characterized in that: The liquid injection assembly (11) comprises a fixed rod (111), the fixed rod (111) is fixedly connected to the movable plate (9), the lower end of the fixed rod (111) is sleeved with an outer tube (112), the lower part of the outer tube (112) is fixedly connected to a liquid injection head (113), the liquid injection head (113) is connected to the box body (2) through a hose (12), and the fixed rod (111) is located between the outer tube (112) and the movable plate (9) and is sleeved with a spring (114).

3. A liquid injection device for preparing a high energy density lithium battery according to claim 1, characterized in that: The positioning assembly (13) comprises a connecting rod (131). Two connecting rods (131) are provided. The two connecting rods (131) are respectively located at both sides of the upper end of the first support frame (1). The two connecting rods (131) are fixedly connected to a fixing plate (132) at their lower parts. A second hydraulic cylinder (133) is provided on both sides above the fixing plate (132). The stroke end of the second hydraulic cylinder (133) is fixedly connected to a connecting plate (134). The two connecting plates (134) are fixedly connected to a clamping plate (135) at their lower parts. A rubber pad (136) is provided on one side of the clamping plate (135) and the fixing plate (132) close to each other. The fixing plate (132) is located on one side of the second hydraulic cylinder (133) and is plugged with a guide rod (137). The guide rod (137) is fixedly connected to the connecting plate (134).

4. A liquid injection device for preparing a high energy density lithium battery according to claim 1, characterized in that: Telescopic rods (10) are provided on both sides above the movable plate (9), and the top of the telescopic rods (10) is fixedly connected to the first support frame (1).

5. The liquid injection device for preparing a high energy density lithium battery according to claim 1, characterized in that: The transmission component (15) comprises a side plate (151), the side plate (151) is fixedly connected to the second support frame (14), one side of the two side plates (151) is provided with an active roller shaft (152), one side of the active roller shaft (152) passes through the side plate (151) and is fixedly connected to the rotating shaft of the second motor (153), and the two side plates (151) are provided with a driven roller shaft (154) on the side away from the active roller shaft (152), and the active roller shaft (152) and the driven roller shaft (154) are connected by transmission through a transmission belt (155).

6. A liquid injection device for preparing a high energy density lithium battery according to claim 5, characterized in that: A limiting component (16) is provided above the transmission component (15).

7. A liquid injection device for preparing a high energy density lithium battery according to claim 6, characterized in that: The limiting assembly (16) comprises a fixing seat (161), the fixing seat (161) is fixedly connected to the side plate (151), a plurality of the fixing seats (161) are provided and are arranged equidistantly, a movable rod (162) is inserted at the upper end of the fixing seat (161), the movable rod (162) is fixedly connected to the mounting plate (163) on the side close to the conveyor belt (155), limiting rods (164) are provided at both ends of the side of the mounting plate (163) away from the movable rod (162), and a fastening bolt (165) is provided at the middle of the upper part of the fixing seat (161).

8. A liquid injection device for preparing a high energy density lithium battery according to claim 6, characterized in that: A liquid inlet (17) is provided on one side of the upper side of the box body (2), a sealing cover (18) is provided on the liquid inlet (17), and anti-slip grooves (19) are provided on the outer side of the sealing cover (18).

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