Metal shell button type lithium ion battery

A technology of lithium-ion batteries and metal shells, which is applied in the direction of batteries, cylindrical shell batteries/batteries, secondary batteries, etc., can solve the problem that the good sealing of the inner shell and the outer shell cannot be fully guaranteed, and the battery product cannot make full use of the diameter direction space, battery products can not make full use of the axial space and other issues, to achieve the effect of simple structure, improved energy density, and good sealing

A technology of lithium-ion batteries and metal shells, which is applied in the direction of batteries, cylindrical shell batteries/batteries, secondary batteries, etc., can solve the problem that the good sealing of the inner shell and the outer shell cannot be fully guaranteed, and the battery product cannot make full use of the diameter direction space, battery products can not make full use of the axial space and other issues, to achieve the effect of simple structure, improved energy density, and good sealing

CN111682129APending Publication Date: 2020-09-18CHONGQING VDL ELECTRONICS
0 Cites 6 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Metal shell button type lithium ion battery
  • Metal shell button type lithium ion battery
  • Metal shell button type lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention provides a metal shell button lithium ion battery, such as figure 2 Shown is a schematic cross-sectional view of the battery, which includes a metal case 31, a battery cell 9 installed inside the metal case 31, a terminal 6 installed outside the metal case 31, and a terminal 6 installed between the metal case 31 and the terminal. The insulator 5 between the 6 and the metal shell 31 and the terminal 6 are insulated and sealed respectively, and the electric core 9 is provided with at least one first pole ear that is electrically connected to the metal shell 31 and has positive or negative polarity 10. The electric core 9 is also provided with at least one second tab 4 electrically connected to the terminal 6 and having negative or positive polarity, and the polarity of the metal shell 31 is opposite to that of the terminal 6, The metal shell 31 and the terminal 6 are hermetically connected to the insulator 5 by heat sealing or adhesive respectively, wherein...

Embodiment 2

[0034] The present invention provides another metal shell button lithium ion battery, which includes a metal shell 31, such as image 3 Shown is a schematic cross-sectional view of the battery, the cell 18 installed inside the metal case 31, the terminal 15 installed outside the metal case 31, installed between the metal case 31 and the terminal 15 and respectively connected to the metal case 31. The shell 31 and the terminal 15 are insulated and sealed insulators 14. The electric core 18 is provided with at least one first tab 19 electrically connected to the metal shell 31 and having positive or negative polarity. The electric core 18 There is also provided at least one second tab 13 electrically connected to the terminal 15 and having negative or positive polarity. The polarity of the metal shell 31 is opposite to that of the terminal 15. The metal shell 31 and the The terminals 15 are hermetically connected to the insulator 14 by heat sealing or adhesive respectively, wher...

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

No PUM Login to View More

Abstract

The invention relates to the field of lithium batteries, and discloses a metal shell button type lithium ion battery. The battery comprises a metal shell, a battery cell which is arranged in the metalshell, a terminal arranged on the outer side of the metal shell, and an insulating part arranged between the metal shell and the terminal and is insulated and sealed with the metal shell and the terminal respectively; at least one first tab which is electrically connected with the metal shell and has positive polarity or negative polarity is arranged on the battery cell; the battery cell is alsoprovided with at least one second tab which is electrically connected with the terminal and has negative polarity or positive polarity; the metal shell and the terminal are connected with the insulating part in a heat sealing or bonding manner; the metal shell serves as one pole, and the terminal serves as the other pole; the occupied space of the battery structure is small in the axial directionand the radial direction of the battery cell, the energy density of the battery is improved, and the lithium ion battery has the advantages of being simple in structure, high in sealing reliability and high in energy density and meets the efficient production requirement.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to a metal shell button lithium ion battery. Background technique [0002] At present, when most battery manufacturers make thin metal shell lithium secondary batteries, the outer shell of the battery cell adopts a circular metal shell, and its structure is divided into three layers: an inner shell, an outer shell, and a sealing ring. Therefore, in the prior art Lithium-ion batteries occupy a lot of space in the radial direction, resulting in that the battery product cannot make full use of the space in the radial direction, so there is a technical problem of low energy density of the battery. The seal between the inner shell and the outer shell adopts an R angle Sealing technology, which relies on compressed plastic sealing rings to achieve sealing. However, the existing technical means are not very accurate in measuring the R angle, so the good sealing between the inner shell and...

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
18 Sep 2020
Publication
CN111682129A
IPC
H01M2/02; H01M2/06; H01M2/08; H01M2/30; H01M2/34; H01M10/0525; H01M10/058
CPC
H01M10/0525; H01M10/058; Y02E60/10; H01M10/0427; H01M50/193; H01M50/55; H01M50/188; H01M50/636
Inventors
邓亚西