Novel shell-entering dust removal device for square lithium battery
By combining the shell down pressure and negative pressure dust removal, the problem of dust on the cover plate surface in lithium battery production affects welding quality, and semi-automated dust removal operations are achieved, and welding qualification rate and production efficiency are improved.
Patent Information
- Application Number
- CN202421626770.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-07-10
AI Technical Summary
During the production process of square lithium batteries, the battery cell and its cover plate are prone to falling into dust or foreign matter during the shell and welding process, resulting in poor laser welding and affecting product quality.
The combination of inlet down pressure and negative pressure dust removal is adopted to absorb dust from the cover plate surface through the negative pressure side air suction cover and adsorption hole, and the lifting component and positioning mechanism are combined to achieve semi-automated operation.
It improves the pass rate of laser welding process, reduces the bad phenomenon of foreign matter frying points, simplifies the operation process, and improves production efficiency.
Smart Images
Figure CN223206295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery production, and particularly relates to a shell-in dust removal device for a new type of square lithium battery. Background Art
[0002] A lithium battery is a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. The lithium metal battery was first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M.S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high requirements for the environment. With the development of science and technology, lithium batteries have become the mainstream.
[0003] In the actual production of square lithium-ion batteries during the shell-in and welding processes, the battery cell and its cover plate need to enter the battery shell, and after being pressed into the shell, laser welding is performed. Inevitably, some dust or foreign objects will fall on the surface of the cover plate during the transfer of the battery cover plate, which is likely to cause adverse phenomena such as foreign object explosion points in the laser welding process. Therefore, in order to improve the shell-in quality and welding quality of products, providing a simple-structured, easy-to-operate, and safe shell-in dust removal device for square lithium batteries is an issue that should be addressed in the lithium battery production process. Summary of the Invention
[0004] The purpose of the utility model is to provide a shell-in dust removal device for a new type of square lithium battery, and its advantages are as follows: The utility model combines the two methods of shell-in pressing and negative pressure dust removal, and performs dust removal and cleaning on the surface of the cover plate during the pressing into the shell process, improving the qualification rate of the laser welding process.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A shell-in dust removal device for a new type of square lithium battery includes a shell and a cover plate provided on the shell. A positioning mechanism is provided outside the shell. A connecting rod is connected above the shell through a lifting component. The other end of the connecting rod is provided with a pressing block through a connecting rod connecting block. An edge pressing piece is provided at the bottom of the pressing block at the edge. A plurality of adsorption holes are arranged in an array on the lower surface of the pressing block. A negative pressure side suction hood connected to the adsorption holes is installed outside the pressing block, and a dust removal box is connected to the outside of the negative pressure side suction hood.
[0006] The utility model is further provided as: The positioning mechanism includes a positioning block in a "C" - shaped structure provided on a flat object.
[0007] The utility model is further provided as: The lifting component includes a lifting cylinder provided above the cover plate.
[0008] The utility model is further configured as follows: the width of the edge pressing sheet is smaller than the width of the cover plate and larger than the width of the positive electrode column and the negative electrode column, and the length is smaller than the length of the cover plate and larger than the distance between the outer end face of the positive electrode column in the longitudinal direction and the outer end face of the negative electrode column in the longitudinal direction.
[0009] The utility model is further configured as follows: the angle between the negative pressure side suction hood and the lower pressing block is 120°-150°.
[0010] The utility model is further configured as follows: a surface of the edge pressing sheet is provided with grooves adapted to fit the positive pole and the negative pole.
[0011] In summary:
[0012] 1. The utility model combines the two methods of shell entry and negative pressure dust removal, and cleans the cover plate surface during the shell entry process, thereby improving the pass rate of the laser welding process.
[0013] 2. The technical solution of the utility model realizes the semi-automatic operation of cleaning the surface of battery cover plates on the production line.
[0014] 3. The utility model is simple and convenient to operate, and reduces defects and rework caused by foreign matter explosion points. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a front view of the utility model;
[0016] Figure 2 It is a bottom view of the pressing block;
[0017] Figure 3 This is the left view of the lower pressure block.
[0018] Figure numerals: 1, shell; 2, cover plate; 3, positioning block; 4, lower pressure block; 4-1, edge pressure piece; 4-2, adsorption hole; 5, negative pressure side suction hood; 6, connecting rod connection block; 7, lifting cylinder. DETAILED DESCRIPTION
[0019] The present invention will be described in further detail below with reference to the accompanying drawings.
[0020] Example: Refer to Figure 1-3As shown in the figure, a dust removal device for a new type of square lithium battery casing includes a casing 1 and a cover plate 2 provided on the casing 1. A positioning mechanism is provided outside the casing 1. A connecting rod is connected above the casing 1 through a lifting component. The other end of the connecting rod is provided with a pressing block 4 through a connecting rod block 6. An edge pressing piece 4-1 is provided at the bottom of the pressing block 4 at the edge. A plurality of adsorption holes 4-2 are arranged in an array on the lower surface of the pressing block 4. A negative pressure side suction hood 5 connected to the adsorption holes 4-2 is installed outside the pressing block 4, and a dust removal box is connected to the outside of the negative pressure side suction hood 5. The positioning mechanism includes a positioning block 3 in a "C" shape structure provided on a flat object. The lifting component includes a lifting cylinder 7 provided above the cover plate 2;
[0021] Specifically, the casing 1 is fixed by the positioning block 3, the lifting cylinder 7 is driven, the lifting cylinder 7 drives the pressing block 4 to descend, and then the pressing block 4 drives the edge pressing piece 4-1 to descend. The edge pressing piece 4-1 presses the cover plate 2, causing the cover plate 2 to be pressed into the casing. At this time, the negative pressure side suction hood 5 is driven, and the negative pressure side suction hood 5 sucks the dust on the surface of the cover plate 2 into the dust removal box through the adsorption holes 4-2 to clean the cover plate 2 and prevent the dust from being brought into the next process.
[0022] Furthermore, the width of the edge pressing piece 4-1 is smaller than the width of the cover plate 2 and larger than the widths of the positive electrode column and the negative electrode column. The length is smaller than the length of the cover plate 2 and larger than the distance between the outer end faces in the length direction of the positive electrode column and the outer end faces in the length direction of the negative electrode column.
[0023] Furthermore, the included angle between the negative pressure side suction hood 5 and the pressing block 4 is 120°-150°. Grooves adapted to the positive electrode column and the negative electrode column are provided on the surface of the edge pressing piece 4-1.
[0024] Operation steps: The casing 1 is fixed by the positioning block 3, the lifting cylinder 7 is driven, the lifting cylinder 7 drives the pressing block 4 to descend, and then the pressing block 4 drives the edge pressing piece 4-1 to descend. The edge pressing piece 4-1 presses the cover plate 2, causing the cover plate 2 to be pressed into the casing. At this time, the negative pressure side suction hood 5 is driven, and the negative pressure side suction hood 5 sucks the dust on the surface of the cover plate 2 into the dust removal box through the adsorption holes 4-2 to clean the cover plate 2 and prevent the dust from being brought into the next process.
[0025] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.
Claims
1. A novel dust removal device for square lithium battery shell, characterized by: It includes a housing (1) and a cover plate (2) provided on the housing (1). A positioning mechanism is provided on the outside of the housing (1). A connecting rod is connected above the housing (1) through a lifting component. The other end of the connecting rod is provided with a pressing block (4) through a connecting rod connecting block (6). An edge pressing piece (4-1) is provided at the bottom of the pressing block (4) at the edge. A plurality of adsorption holes (4-2) are arranged in an array on the lower surface of the pressing block (4). A negative pressure side air suction hood (5) connected to the adsorption holes (4-2) is installed on the outside of the pressing block (4), and a dust removal box is connected to the outside of the negative pressure side air suction hood (5).
2. The novel square lithium battery shell dust removal device according to claim 1 is characterized in that: The positioning mechanism includes a positioning block (3) having a "C"-shaped structure provided on a flat object.
3. The novel square lithium battery shell dust removal device according to claim 1 is characterized in that: The lifting component includes a lifting cylinder (7) provided above the cover plate (2).
4. The novel square lithium battery shell dust removal device according to claim 1 is characterized in that: The width of the edge pressing piece (4-1) is smaller than the width of the cover plate (2) and larger than the widths of the positive electrode post and the negative electrode post. The length is smaller than the length of the cover plate (2) and larger than the distance between the outer end faces in the length direction of the positive electrode post and the outer end faces in the length direction of the negative electrode post.
5. The novel square lithium battery shell dust removal device according to claim 1 is characterized in that: The included angle between the negative pressure side air suction hood (5) and the pressing block (4) is 120°-150°.
6. The novel square lithium battery shell dust removal device according to claim 1, characterized in that: The surface of the edge pressing piece (4-1) is provided with grooves adapted to the positive electrode post and the negative electrode post.