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A battery sealing assembly and manufacturing method thereof, and a lithium-ion battery

A technology for sealing components and manufacturing methods, which is applied to battery pack parts, sealing materials, electrical components, etc., can solve the problems that the solder cannot completely flow and fill the welding seam, and the air tightness of the sealing components is poor, so as to achieve air tightness and Good peel strength, stable structure, better air tightness and better peel strength

Active Publication Date: 2015-09-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the contact surfaces between the ceramic ring and the stem, the metal ring and the ceramic ring of the sealing assembly of the battery in the prior art are set perpendicular to the horizontal plane, and the brazing is performed on the circular surface perpendicular to the horizontal plane. , this brazing method has inevitable disadvantages, and it is prone to the situation that the solder cannot completely flow and fill the weld seam, resulting in the technical problem of poor airtightness of the sealing assembly

Method used

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  • A battery sealing assembly and manufacturing method thereof, and a lithium-ion battery
  • A battery sealing assembly and manufacturing method thereof, and a lithium-ion battery

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment 1 is used to illustrate the sealing assembly and preparation method of the battery positive electrode disclosed in the present invention;

[0047] Step 1. Provide an alumina ceramic ring, an aluminum-magnesium alloy ring, and a titanium metal core post. A mounting hole is formed in the middle of the aluminum-magnesium alloy ring, and a connecting hole is formed in the middle of the alumina ceramic ring. The joint surface of the alloy ring and the alumina ceramic ring, and the joint surface of the alumina ceramic ring and the titanium metal core post are made into a circular ring surface with an inclination of 5 degrees to the center line 23 of the ceramic ring; The first joint surface formed by the outer side surface of the alumina ceramic ring, the second joint surface with which the mounting hole wall of the aluminum-magnesium alloy ring is matched is made to be 5 degrees with the center line 23 of the ceramic ring, and the titanium metal core column The ...

Embodiment 2

[0050] This embodiment 2 is used to illustrate the sealing assembly of the battery anode and the preparation method thereof disclosed in the present invention;

[0051] Step 1. A ceramic ring, a metal ring, and a core post are provided, a mounting hole is formed in the middle of the metal ring, a connecting hole is formed in the middle of the ceramic ring, the core post is an aluminum metal core post, and the ceramic ring is Zirconia ceramic ring, the metal ring is an aluminum-magnesium alloy ring, the joint surface of the metal ring and the ceramic ring is made into a circular ring surface with an inclination of 15 degrees with the center line of the ceramic ring, and the ceramic ring and The connecting surface of the core column is made into a circular ring surface with an inclination of 20 degrees with the center line of the ceramic ring; that is, the first joint surface formed by the outer side surface of the ceramic ring, and the mounting hole wall of the metal ring is matche...

Embodiment 3

[0054] This embodiment 3 is used to illustrate the sealing assembly of the battery negative electrode and the preparation method thereof disclosed in the present invention;

[0055] Step 1. A ceramic ring, a metal ring, and a core post are provided. A mounting hole is formed in the middle of the metal ring, and a connecting hole is formed in the middle of the ceramic ring. The core post is a titanium metal core post, and the ceramic ring is Zirconia ceramic ring, the metal ring is an aluminum-manganese alloy ring, the joint surface of the metal ring and the ceramic ring is made into a toroidal surface with an inclination of 10 degrees with the center line of the ceramic ring, and the ceramic ring and The connecting surface of the core column is made into a circular ring surface with an inclination of 10 degrees with the center line of the ceramic ring; that is, the first joint surface formed by the outer side surface of the ceramic ring, and the mounting hole wall of the metal rin...

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PUM

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Abstract

A sealing assembly, a method of preparing the sealing assembly and a battery are provided. The sealing assembly comprises a metal ring having a mounting hole therein; a ceramic ring having a connecting hole therein and disposed in the mounting hole; and a core column disposed in the connecting hole, wherein at least one of an inner circumferential wall surface of the metal ring, an outer circumferential wall surface of the ceramic ring, an inner circumferential wall surface of the ceramic ring and an outer circumferential wall surface of the core column is configured as an inclined surface, and an inclination angle of the inclined surface relative to a vertical plane is about 1 degree to about 45 degrees.

Description

technical field [0001] The invention relates to the technical field of battery sealing; specifically, the invention relates to a battery sealing assembly and a manufacturing method thereof, and a lithium ion battery. Background technique [0002] At present, in the commonly used battery packaging technology, according to the packaging materials, it can be divided into three categories: plastic packaging, glass packaging and ceramic packaging; among them, plastic connection is difficult to meet the long-life (more than 20 years) storage requirements from the perspective of service life. Requirements for the use of high-performance batteries and reliable power batteries. connected by the vitreous. After long-term use and storage of lithium-ion batteries, the lower layer of the glass body that is in direct contact with the electrolyte of the lithium-ion battery will be corroded. It not only reduces the insulation performance of the glass, but also causes the leakage of the li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M2/06H01M10/0525H01M50/184H01M50/188H01M50/191
CPCB23K1/19C04B2237/52C04B2237/348H01G9/2077C04B2237/121C04B2237/122Y10T29/4911C04B2237/403B23K2201/38C04B37/026C04B2237/124H01M2/065C04B2237/407C04B2237/123H01M2/307B23K1/008H01M2/08C04B2237/343C04B2237/405C04B2237/402B23K2101/38Y02E60/10H01M50/186H01M50/191H01M50/561H01M50/184H01M50/188
Inventor 宫清林信平张旭林勇钊徐述荣
Owner BYD CO LTD
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