Power battery and sealing nail thereof as well as welding method of sealing nail
A technology for power batteries and sealing nails, which is applied to sealing materials, welding equipment, battery pack components, etc., can solve the problems of sealing nails 30 being unable to be sealed, welding seam explosion points, high air pressure, etc., so as to reduce the positioning accuracy requirements and avoid explosions. point, the effect of improving production efficiency
Inactive Publication Date: 2017-11-07
HANS LASER TECH IND GRP CO LTD
View PDF5 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] If a continuous laser is used for butt welding, as the heat input increases, the residual electrolyte in the liquid injection hole will decompose and release gas under the action of the high-energy laser beam, resulting in the sealing of the rubber nail 20 and the sealing nail 30. If the air pressure in the rear cavity is too high, it is easy to form a weld explosion point at the joint seal of the head and tail of the circular weld seam, resulting in the failure of the sealing nail 30 to seal and cause product defects
Therefore, the welding mode of the sealing nail 30 and the top cover 10 generally adopts a pulsed laser for butt welding. In this way, due to the need to ensure airtightness, the welding speed is generally within 3mm / s-8mm / s, and the efficiency is low.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.
[0027] see Figure 4 , Figure 4 It is a three-dimensional schematic diagram of the sealing nail of the present invention. The present invention proposes a power battery, which includes a sealing nail 30 , and the sealing nail 30 includes: a main body 306 and a flange 307 . Among them, the main body 306 and figure 1 The sealing nail shown has a similar structure, which is in the shape of a truncated cone, with a top surface 301 , a bottom surface 302 and a tapered side surface 305 , and a groove 303 is provided on the bottom surface 302 . The flange 307 protrudes from the top of the main body 306 along the circumference.
[0028] see in conjunction Figure 5 and Figure 6 , Figure 5 It is a schematic diagram of the cooperation structure of the sealing nail and the top cover of the present invention; Figure 6 It is an exploded pe...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Defocus amount | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a power battery and a sealing nail thereof as well as a welding method of the sealing nail. The sealing nail comprises a main body and a flange, wherein the main body takes on a frustum shape, and the top of the main body is protruded outwards along a circumference. The welding method comprises the following steps of enabling the main body of the sealing nail to be contained in a containing groove arranged at a liquid injecting hole of a top cover of the power battery, enabling the flange of the sealing nail to be carried on a carrying surface of the top cover, and enabling the sealing nail and the top cover to be combined together by adopting laser full-penetration welding. The welding efficiency can be greatly improved.
Description
technical field [0001] The invention relates to a laser processing method, in particular to a laser processing method for a power battery. Background technique [0002] see Figure 1 to Figure 3 , A liquid injection hole is usually reserved on the top cover 10 of the single power battery as an inlet for injecting the electrolyte, and a storage tank is provided at the liquid injection hole. Wherein, the liquid injection hole can be correspondingly inserted with the rubber nail 20 , and the receiving groove can be correspondingly accommodated with the sealing nail 30 . The sealing nail 30 is welded together with the top cover 10 . The existing sealing nail 30 is generally in the shape of a cone, and the bottom surface 302 of the sealing nail 30 is provided with a groove 303 for matching with the rubber nail 20 . The side surface 305 of the sealing nail 30 is a tapered surface, which fits with the tapered side wall of the receiving groove. When in place in the receiving groo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): H01M2/08H01M2/04B23K26/21H01M50/143H01M50/166H01M50/186
CPCB23K26/21H01M50/147H01M50/183Y02E60/10
Inventor钱德宇徐作斌刘昊冯伟贤胡勇高云峰
OwnerHANS LASER TECH IND GRP CO LTD