Shenzhen Hysincere Battery Co., Ltd
Shenzhen Hysincere Battery Co., Ltd

other news


Home >  other news > 

Briefly describe the structural characteristics of the high Lithium -ion battery diaphragm

source:other news release time:2023-06-15 Hits:0     Popular:Lithium-ion battery wholesale

  

  1) Thickness. The thickness of the high Lithium -ion battery diaphragm is generally ≤25 μm. Under the premise of ensuring a certain mechanical strength, the thinner the thickness of the diaphragm, the better. At present, most of the new high -energy batteries use single -layer diaphragm with a membrane thickness of 20 μm or 16 μm; the diaphragm of the battery used in electric vehicles (EV) and hybrid electric vehicles (HEV) is about 40 μm. And the thicker the diaphragm, the better its mechanical strength, and it is not easy to be short -circuited during the assembly battery process.

  2) Porph and distribution. As a battery diaphragm material, it has a micropore structure that allows absorbing electrolytes; in order to ensure the nature of the electrode/electrolyte interface in the battery, the distribution of micro -holes in the entire diaphragm material should be uniform. The size of the pore diameter and distribution have a direct impact on the performance of the battery: the pore diameter is too large, and it is easy to make the positive and negative electrode direct contact or easily pierced by high Lithium branches to cause short circuit; too small the aperture can increase the resistor. The distribution of micro -holes is uneven, and the local current will be excessive during work, which will affect the performance of the battery.

  3) Pole rate. It can be used to characterize the amount of diaphragm gas under one time and pressure, which is important to reflect the smoothness of high Lithium ions through the diaphragm. The pore rate is very important for the permeability of the membrane and the capacity of the electrolyte. The pore rate of most commercial lithium-ion battery diaphragms is between 40 % -50 %.

  Power battery manufacturers believe that after soaking the weighed microre film (WD) for 2H in the artenol 2h, use the filter paper to gently dry the liquid on the surface, and then the weighing (ww) to get the micro -micro -micro -micro The quality of the pore membrane absorbs the quality wb = ww-wd. In the formula, the weight of the WD microre film (g); the weight (g) after soaking the ww; the mass (G) of the WB positive butanol; the density of ρB positive butanol (G/CM3); VP dry membrane volume (CM3).

  4) Through sex. Under certain conditions (pressure, measurement area), a certain amount of air required by the diaphragm is called the Gurly value. The size of the diaphragm passability is the result of the comprehensive factors of the internal pores such as the septum porosity, the shape of the pore, the shape of the pore, the shape of the pore and the pore tortuousness.

  5) Surface shape structure of SEM diaphragm.

  6) Base weight of the diaphragm. 1) Take three septum samples of 30cm in length. 2) Put these three samples and fold them together. 3) Weighing and recorded the quality of the sample (milligrams).


Read recommendations:

best batteries for off grid solar

12v marine battery

5kWh Household Energy Storage System 51.2V 100Ah Battery LiFePo4 for Solar Power

Understanding 14V and 15V Lithium Batteries: A Complete Guide

Lithium power battery storage method

Share:

Last article:Principle of battery charger

Next article:high Lithium battery manufacturers believe that operating characteristics

related suggestion

golf cart batteries price

2023-04-07

lithium trolling motor battery Factory

2023-03-20

lithium marine batteries Production

2023-03-22

solar power storage Vendor

2023-03-20

dual purpose marine battery maker

2023-03-20

solar energy storage batteries direct sales

2023-03-20

best battery for solar panel

2023-05-08

dual purpose marine battery

2023-05-08

solar generator for house

2023-05-08

solar generators for sale

2023-05-08

deep cell marine battery

2023-05-08

best portable power station

2023-05-08

Wall Mount Rack Home Energy Battery Pack 16S2P 51.2V 100Ah Cylindrical Cell

2022-10-19

High Temperature Lithium Battery 18650 26650 Cell

2022-10-18

Golf Cart 51.2V 105Ah LiFePo4 Battery Pack IP67 Waterproof with Bluetooth

2022-09-29

Lithium Polymer Battery Pack for Smart Home Device

2023-02-14

Medical Equipment Cylindrical Lithium Ion Battery 3.7V

2023-02-14

Understanding Battery Specifications: The 153-5710 and 153-5656 Models

2025-03-18

How to control the capacity of lithium iron phosphate battery pack to be consistent

2022-11-16

How to look at the battery capacity.lithium marine batteries manufacturer

2023-04-14

Understanding 14V and 15V Lithium Batteries: A Complete Guide

2025-03-12

Self -discharge rate of lithium ion battery.portable solar power station

2023-05-12

LiCoO2 lithium battery.lithium golf cart batteries wholesale

2023-04-18

Lithium power battery characteristics.portable solar generator

2023-07-11

Advantages of ternary polymer lithium battery

2022-12-29

Research status of the protection of power lithium battery packs.solar battery storage system manufacture

2023-04-08

Composition of lithium-ion battery materials.best solar generator for home

2023-08-03