A lithium-ion battery formation nozzle positioning fixture

Abstract

This utility model relates to a lithium-ion battery formation nozzle positioning fixture, belonging to the field of power battery manufacturing technology. The fixture includes: a base, comprising a base bottom plate, a base vertical plate fixedly connected to the top of the base bottom plate, connecting plates fixedly installed on both sides of the base vertical plate, and a hollow mounting opening on the base vertical plate; and a nozzle positioning plate installed in the hollow mounting opening. This utility model features a simple structure and modular design, facilitating equipment assembly, upgrading, and maintenance. It allows for free switching between blade batteries of different thicknesses and injection hole heights, significantly improving the accuracy and consistency of formation nozzle alignment and calibration, and reducing enterprise costs.

Description

Technical Field

[0001] This utility model relates to a lithium-ion battery formation nozzle positioning fixture, which belongs to the field of power battery manufacturing technology. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the blade battery, as a new type of battery technology with high energy density and high safety, makes quality control during its production process particularly important. A key process—formation—needs to be carried out under negative pressure to expel the gases generated during the formation process. Currently, common formation equipment mainly consists of a charge / discharge module and a negative pressure module. The negative pressure module often uses a corrosion-resistant rubber nozzle pressed against the battery's electrolyte filling hole for venting.

[0003] The purpose of the nozzle positioning fixture is to ensure an effective and tight seal between the nozzle and the battery filling port, preventing abnormalities such as negative pressure formation and electrolyte leakage. After long-term use, replacement, or maintenance, the nozzle's position is prone to shift. Even a micron-level deviation can cause the nozzle to fail to accurately align with the filling port, resulting in electrolyte leakage, vacuuming failure, or even damage to the battery or the nozzle itself, severely impacting production yield and equipment uptime.

[0004] Currently, the common alignment method mainly relies on operators manually adjusting the gauges using tools such as feeler gauges, height gauges, and imprints, based on their experience. This method has the following disadvantages: 1. Inefficient: The adjustment process is cumbersome, the downtime is long, and it is impossible to make effective adjustments before production.

[0005] 2. Poor accuracy: Due to the influence of human judgment and experience, it is difficult to guarantee the consistency of repeatability accuracy.

[0006] 3. Reliance on skilled workers: Requires high levels of personnel skills and incurs high training costs.

[0007] Therefore, there is an urgent need for a standardized tooling to adjust the formation nozzle, meet the accuracy requirements, and improve the yield and consistency of battery formation. Utility Model Content

[0008] To address the aforementioned issues, this invention provides a positioning fixture for the formation nozzle of a lithium-ion battery, aiming to improve the accuracy and consistency of the formation nozzle alignment and calibration.

[0009] This utility model discloses a lithium-ion battery formation nozzle positioning fixture, characterized in that the fixture comprises: The base 1 includes a base bottom plate 101, a base vertical plate 102 is fixedly connected above the base bottom plate 101, and connecting plates 103 are fixedly installed on both sides of the base vertical plate 102. The base vertical plate 102 is provided with a hollow installation opening 104. The nozzle positioning plate 2 is installed in the hollow mounting port 104.

[0010] Furthermore, the nozzle positioning plate 2 has several horizontally distributed nozzle positioning holes 201 in the middle.

[0011] Furthermore, the hollow mounting opening 103 is provided with two first positioning holes 105 at opposite corners.

[0012] Furthermore, the suction nozzle positioning plate 2 is provided with two second positioning holes 202 at opposite corners, which are connected to the first positioning hole 105.

[0013] Furthermore, positioning bolts 3 are installed at the connection points between the two first positioning holes 105 and the two second positioning holes 202.

[0014] Furthermore, the base plate 101 is provided with a base plate positioning bolt 106.

[0015] The beneficial effects of this utility model are as follows: This utility model has a simple structure and adopts a modular design, which facilitates the assembly, upgrading and maintenance of equipment. It can freely switch blade batteries with different thicknesses and injection hole heights, which greatly improves the accuracy and consistency of formation nozzle alignment and calibration, and reduces enterprise costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model, and also serves as an abstract drawing.

[0017] Figure 2 This is a schematic diagram of the structure of the base 1 in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the suction nozzle positioning plate 2 in this utility model.

[0019] Figure 4 This is a schematic diagram of the working condition of the tooling and the suction nozzle 4 of this utility model.

[0020] Figure captions: 1. Base, 101. Base bottom plate, 102. Base vertical plate, 103. Connecting plate, 104. Hollow mounting port, 105. First positioning hole, 106. Base plate positioning bolt, 2. Suction nozzle positioning plate, 201. Suction nozzle positioning hole, 202. Second positioning hole, 3. Positioning bolt, 4. Suction nozzle. Detailed Implementation

[0021] The following is a specific embodiment of this utility model with reference to the accompanying drawings, and the structure of this utility model is described in detail. It should be noted that the scope of application of this utility model is not limited to the following embodiment; all similar structures based on this utility model are within the scope of application of this utility model.

[0022] This utility model tooling is used to detect whether the nozzle position on the formation charge-discharge testing equipment is offset. The formation charge-discharge testing equipment is an existing technology, and its structure will not be described in detail here.

[0023] This utility model relates to a positioning fixture for the formation nozzle of a lithium-ion battery, such as... Figures 1-4 As shown, the tooling includes: The base 1 includes a base plate 101 with dimensions of 1000*40mm. A base vertical plate 102 with dimensions of 1000*200mm is fixedly connected above the base plate 101. Connecting plates 103 are fixedly installed on both sides of the base vertical plate 102. The two connecting plates 103 are used to reinforce and connect the base plate 101 and the base vertical plate 102. A hollow mounting opening 104 with dimensions of 800*10mm is provided on the base 1. When the base 1 is in operation, it is installed on the needle bed base of the chemical formation charge and discharge testing equipment. The nozzle positioning plate 2 is installed in the hollow mounting port 104.

[0024] As a further description of this embodiment, such as Figure 3 As shown, the nozzle positioning plate 2 has several horizontally distributed nozzle positioning holes 201 in the middle. When working, the nozzle positioning holes 201 are at the same height as the liquid injection holes of the batteries in the tray of the formation charge and discharge testing equipment, which are used to calibrate the positioning of the nozzle 4. Secondly, the nozzle positioning holes 201 in the nozzle positioning plate 2 should be processed according to the battery thickness, the number of channels in the tray and the height of the liquid injection holes. The hole size should be slightly larger than the diameter of the nozzle 4 by about 2 mm.

[0025] As a further description of this embodiment, such as Figure 2 As shown, the hollow mounting opening 103 has two first positioning holes 105 at opposite corners.

[0026] As a further description of this embodiment, such as Figure 3 As shown, the suction nozzle positioning plate 2 has two second positioning holes 202 at opposite corners that are connected to the first positioning hole 105.

[0027] As a further description of this embodiment, such as Figure 1 As shown, positioning bolts 3 are installed at the connection points of the two first positioning holes 105 and the two second positioning holes 202. The positioning bolts 3 enable the nozzle positioning plate 2 to be installed on the nozzle positioning block of the formation charge-discharge testing equipment.

[0028] As a further description of this embodiment, the base plate 101 is provided with a base plate positioning bolt 106, and the base 1 is connected to the needle bed base of the formation charge-discharge detection equipment through the base plate positioning bolt 106.

[0029] The working principle of this utility model is as follows: The base 1 is connected to the needle bed base of the formation charge-discharge testing equipment via the base plate positioning bolt 106, so that the entire tooling is located in the equipment storage position. The processed nozzle positioning plate 2 is connected to the positioning block of the formation charge-discharge testing equipment via the positioning bolt 3 and aligned with the nozzle 4. Finally, according to the degree of offset of the nozzle 4 in the nozzle positioning hole 201, the nozzle 4 with a larger offset is positioned and adjusted to ensure that the nozzle 4 is in the center position of the nozzle positioning hole 201.

[0030] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this invention.

Claims

1. A positioning fixture for the formation nozzle of a lithium-ion battery, characterized in that, The tooling includes: The base (1) includes a base bottom plate (101), a base vertical plate (102) is fixedly connected above the base bottom plate (101), and connecting plates (103) are fixedly installed on both sides of the base vertical plate (102). The base vertical plate (102) is provided with a hollow installation opening (104). The nozzle positioning plate (2) is installed in the hollow mounting port (104).

2. The lithium-ion battery formation nozzle positioning fixture according to claim 1, characterized in that, The nozzle positioning plate (2) has several horizontally distributed nozzle positioning holes (201) in the middle.

3. The lithium-ion battery formation nozzle positioning fixture according to claim 1, characterized in that, The hollow mounting opening (104) is provided with two first positioning holes (105) at opposite corners.

4. The lithium-ion battery formation nozzle positioning fixture according to claim 1, characterized in that, The suction nozzle positioning plate (2) has two second positioning holes (202) at opposite corners that are connected to the first positioning hole (105).

5. The lithium-ion battery formation nozzle positioning fixture according to claim 4, characterized in that, Positioning bolts (3) are installed at the connection points of the two first positioning holes (105) and the two second positioning holes (202).

6. The lithium-ion battery formation nozzle positioning fixture according to claim 1, characterized in that, The base plate (101) is provided with a base plate positioning bolt (106).

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