Lithium ion battery electrolyte infiltration device

Abstract

The utility model discloses a lithium ion battery electrolyte infiltrating device which comprises a base, the base is of a cylindrical structure, a rotating disc is rotatably installed at the top of the base, a plurality of battery boxes are rotatably installed at the top of the rotating disc, the battery boxes are arranged at equal intervals, a first contact assembly is arranged on each battery box, and a second contact assembly is arranged on each first contact assembly. A plurality of fixing columns are arranged on the circumferential side wall of the base, the fixing columns are arranged at equal intervals, second contact assemblies are arranged on the fixing columns, and the first contact assemblies and the second contact assemblies are in mutual shifting contact fit. According to the utility model, the lithium battery is infiltrated by a centrifugal force, so that an all-dimensional and lossless infiltration effect is realized, and compared with the traditional static infiltration mode and pressurized infiltration mode, the infiltration efficiency is improved, the lithium battery is not damaged, and the electrolyte is not discharged and wasted; and the infiltration quality and the safety and stability of the lithium battery infiltration work are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a lithium ion battery electrolyte infiltration device. Background Art

[0002] Electrolyte infiltration is the diffusion process of electrolyte inside the bare cell after the lithium battery cell is filled. Under a certain temperature and standing time, the electrolyte will slowly fill the gap between the pole piece and the diaphragm. Whether the electrolyte infiltration is complete has a great influence on the internal resistance and lithium ion conductivity of the lithium battery cell. Sufficient electrolyte infiltration can form a better interface in the pre-charge stage, which is beneficial to improve the safety and energy storage performance of the lithium battery cell. Insufficient electrolyte infiltration can easily lead to thermal runaway and other dangers of lithium batteries during use.

[0003] Usually, the existing infiltration method is completed by staying still for a long time at a certain high temperature, which usually takes dozens of hours to complete the infiltration. In addition, this method will make the lithium battery infiltration efficiency slow. At the same time, infiltration under gravity will cause some of the battery's internal electrode material particles and diaphragm materials to be unable to be fully infiltrated, thus affecting the infiltration effect. Some methods also increase the speed of electrolyte infiltration by squeezing the battery cell, but since there is electrolyte inside the battery cell, the introduction of electrolyte by squeezing can easily squeeze out the electrolyte at the squeezing position, resulting in the waste of electrolyte discharge inside the battery cell, and it is easy to damage the battery cell.

[0004] To this end, the utility model provides a lithium ion battery electrolyte infiltration device to solve the above problems. Utility Model Content

[0005] The utility model provides a lithium-ion battery electrolyte infiltration device, which realizes an all-round and lossless infiltration effect by performing centrifugal infiltration on the lithium battery. Compared with the traditional static infiltration method and the pressurized infiltration method, it not only improves the infiltration efficiency but also does not cause damage to the lithium battery and waste of electrolyte discharge, thereby ensuring the infiltration quality and the safety and stability of the lithium battery infiltration work, and solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above objectives, the utility model provides the following technical solutions:

[0007] A lithium-ion battery electrolyte infiltration device comprises a base, the base is a cylindrical structure, a turntable is rotatably mounted on the top of the base, a plurality of battery boxes are rotatably mounted on the top of the turntable, the plurality of battery boxes are equidistantly arranged, a contact component 1 is arranged on the battery box, a plurality of fixing columns are arranged on the circumferential side wall of the base, the plurality of fixing columns are equidistantly arranged, a contact component 2 is arranged on the fixing column, and the contact component 1 and the contact component 2 are mutually movably contacted and matched.

[0008] Preferably, a placement groove is formed on the top of each of the plurality of battery boxes, and the length and width of the placement groove are tightly engaged with the length and width of the lithium battery.

[0009] Preferably, the longitudinal depth of the placement groove is lower than the longitudinal height of the lithium battery.

[0010] Preferably, the contact component 1 is a square block with a sheet-like chamfered structure, and the contact component 1 is provided on the side walls at both ends of the plurality of battery boxes.

[0011] Preferably, the plurality of fixing columns are interconnected with the circumferential side walls of the base via extension rods, the contact component 2 is a square block with a sheet-like chamfered structure, and the contact component 2 is disposed on the top side walls of the plurality of fixing columns.

[0012] Preferably, the plurality of battery boxes are rotatably mounted on the top of the turntable via a rotating shaft, and the rotating shaft is disposed at the bottom of the battery box.

[0013] Preferably, the rotating shaft is an elastic rotating shaft, a torsion spring is arranged inside the rotating shaft, the rotating shaft includes a fixed part and a rotating part, the rotating part is rotatably mounted on the fixed part, the top of the rotating part is connected to the bottom of the battery box, and the rotating part is elastically connected to the fixed part inside through the torsion spring.

[0014] Compared with the existing technology, the utility model has the following beneficial effects:

[0015] The lithium-ion battery electrolyte infiltration device described in the utility model realizes an all-round and lossless infiltration effect by performing centrifugal infiltration on the lithium battery. Compared with the traditional static infiltration method and the pressurized infiltration method, it not only improves the infiltration efficiency but also does not cause damage to the lithium battery and waste of electrolyte discharge, thereby ensuring the infiltration quality and the safety and stability of the lithium battery infiltration work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a lithium-ion battery electrolyte infiltration device of the utility model;

[0017] Figure 2This is a schematic diagram of the top view of a lithium-ion battery electrolyte infiltration device of the utility model;

[0018] Figure 3 This is a schematic diagram of the front view structure of a lithium-ion battery electrolyte infiltration device of the utility model;

[0019] Figure 4 For the utility model Figure 3 Schematic diagram of the local enlarged structure at point A.

[0020] In the figure: 1. base; 2. turntable; 3. battery box; 4. fixing column; 5. placement slot; 6. contact component 1; 7. contact component 2; 8. extension rod; 9. fixing part; 10. rotating part. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figures 1 to 4 As shown, the utility model provides a lithium-ion battery electrolyte infiltration device, including a base 1, the base 1 is a cylindrical structure, a turntable 2 is rotatably installed on the top of the base 1, and a plurality of battery boxes 3 are rotatably installed on the top of the turntable 2, the plurality of battery boxes 3 are equidistantly arranged, and a contact component 6 is arranged on the battery box 3, the contact component 6 is a square block with a sheet-like chamfered structure, and the contact components 6 are arranged on the side walls at both ends of the plurality of battery boxes 3.

[0023] A plurality of fixing columns 4 are arranged on the circumferential side wall of the base 1, and the plurality of fixing columns 4 are arranged at equal intervals from each other. The plurality of fixing columns 4 are connected to the circumferential side wall of the base 1 through an extension rod 8. A contact component 2 7 is arranged on the fixing column 4, and the contact component 2 7 is a square block with a sheet-like chamfered structure. The contact component 2 7 is arranged on the top side wall of the plurality of fixing columns 4. The contact component 1 6 and the contact component 2 7 are mutually moved and contacted.

[0024] A placement groove 5 is provided on the top of each of the multiple battery boxes 3. The length and width of the placement groove 5 are tightly fitted with the length and width of the lithium battery so as to stabilize the placement state of the lithium battery and ensure stability when the turntable 2 rotates.

[0025] Furthermore, the longitudinal depth of the placement groove 5 is set to be lower than the longitudinal height of the lithium battery, that is, when the lithium battery is placed in the placement groove 5, the upper part of the lithium battery is exposed from the top of the placement groove 5, so as to facilitate the convenience of taking and placing the lithium battery.

[0026] A plurality of battery boxes 3 are rotatably mounted on the top of the turntable 2 via a rotating shaft, the rotating shaft is arranged at the bottom of the battery box 3, the rotating shaft is an elastic rotating shaft, a torsion spring is arranged inside the rotating shaft, the rotating shaft comprises a fixed part 9 and a rotating part 10, the rotating part 10 is rotatably mounted on the fixed part 9, the top of the rotating part 10 is connected to the bottom of the battery box 3, and the rotating part 10 is elastically connected to the fixed part 9 inside via a torsion spring. The torsion spring is used to rotate and reset the battery box 3, when the contact component 1 6 on the battery box 3 and the contact component 2 7 are moved in contact and matched, they rotate, and the torsion spring is stored with energy, and after the rotation is completed, the torsion spring rotates and resets the battery box 3 under the reaction force, so as to maintain the continuous rotation characteristics of the battery box 3, and also facilitate the smooth movement of the battery box 3 when it reaches the next contact component 2 7.

[0027] Working principle: After the lithium battery core is filled with liquid, the lithium battery is placed in the placement slot 5 on the battery box 3, and then the turntable 2 starts to rotate. The turntable 2 is driven by a motor. As the rotation speed of the turntable 2 continues to increase, a centrifugal force is generated on the lithium battery and the internal electrolyte, thereby achieving a full-range and lossless infiltration effect and improving the infiltration efficiency. At the same time, due to the provision of contact component 1 6 and contact component 2 7, when the turntable 2 is rotating, the contact component 1 6 will cause the battery box 3 to rotate by itself when it is moved with the contact component 2 7, further improving the rotation effect of the battery box 3, achieving a full-range and lossless infiltration effect, and further improving the infiltration efficiency.

[0028] In summary, by using centrifugal force infiltration on lithium batteries, an all-round and lossless infiltration effect is achieved. Compared with the traditional static infiltration method and pressurized infiltration method, it not only improves the infiltration efficiency but also does not cause damage to the lithium battery and waste of electrolyte discharge, thus ensuring the infiltration quality and the safety and stability of the lithium battery infiltration work.

[0029] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A lithium-ion battery electrolyte infiltration device, characterized in that: The invention comprises a base (1), the base (1) being a cylindrical structure, a turntable (2) being rotatably mounted on the top of the base (1), a plurality of battery boxes (3) being rotatably mounted on the top of the turntable (2), the plurality of battery boxes (3) being equidistantly arranged, a contact component 1 (6) being arranged on the battery box (3), a plurality of fixing columns (4) being equidistantly arranged on the circumferential side wall of the base (1), a plurality of fixing columns (4) being equidistantly arranged, a contact component 2 (7) being arranged on the fixing columns (4), the contact component 1 (6) and the contact component 2 (7) being mutually contacted and matched.

2. A lithium-ion battery electrolyte infiltration device according to claim 1, characterized in that: A placement groove (5) is provided on the top of each of the plurality of battery boxes (3), and the length and width of the placement groove (5) are tightly engaged with the length and width of the lithium battery.

3. A lithium-ion battery electrolyte infiltration device according to claim 2, characterized in that: The longitudinal depth of the placement groove (5) is lower than the longitudinal height of the lithium battery.

4. A lithium-ion battery electrolyte infiltration device according to claim 1, characterized in that: The contact component one (6) is a square block with a sheet-like chamfered structure, and the side walls at both ends of the plurality of battery boxes (3) are each provided with a contact component one (6).

5. A lithium-ion battery electrolyte infiltration device according to claim 1, characterized in that: The plurality of fixed columns (4) are connected to each other via an extension rod (8) and a circumferential side wall of the base (1); the contact component 2 (7) is a square block with a sheet-like chamfered structure; and the top side walls of the plurality of fixed columns (4) are all provided with a contact component 2 (7).

6. A lithium-ion battery electrolyte infiltration device according to claim 1, characterized in that: The plurality of battery boxes (3) are rotatably mounted on the top of the turntable (2) via a rotating shaft, and the rotating shaft is arranged at the bottom of the battery box (3).

7. A lithium-ion battery electrolyte infiltration device according to claim 6, characterized in that: The rotating shaft is an elastic rotating shaft, a torsion spring is arranged inside the rotating shaft, the rotating shaft comprises a fixed part (9) and a rotating part (10), the rotating part (10) is rotatably mounted on the fixed part (9), the top of the rotating part (10) is connected to the bottom of the battery box (3), and the rotating part (10) is elastically connected to the fixed part (9) inside via the torsion spring.

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