18650 rechargeable battery lithium 3.7v 3500mah
CH
About Us
Company Profile Development History Sales Network Partner Social Responsibility
Products
Rechargeable Battery Battery Packs Energy Storage Battery Primary Battery Handicraft Article
Subsidiary Company
SINO TECHNOLOGY SUNBEAM GREEN POWER DATAPOWER SEONG-HEE STD
Honor
Qualification Certificate Patent Certificate Honor Certificate
R&D
R&D Center Test Center
News
Company News Industry News
Contact Us
Other information
product
polymer lithium battery Primary battery Rechargeable Battery LR03 alkaline battery
18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

Other information

Home  >  Other information

Test method for open circuit voltage of lithium batteries

release time:2022-12-30 Hits:     Popular:AG11 battery

  Cabinet type energy storage battery 10KWH

  The balance potential test process of electrode materials is as follows: electrode materials are prepared into electrode sheets, and button half cells are assembled with lithium metal. The open circuit voltage of button half cells under different SOC conditions is measured, and the mathematical expression of the open circuit voltage curve is determined by polynomial or Gaussian fitting. The open circuit voltage test methods mainly include:

  (1) The basic principle of galvanostatic intermittent titration technique (GITT) is to apply a constant current to the measuring system in a specific environment and cut off the current after it lasts for a period of time. Observe the change of the system potential with time in the applied current section and the voltage that reaches equilibrium after relaxation (i.e. open circuit voltage). GITT test examples are as follows: (i) Charge at C/50 until the voltage reaches the upper limit, such as 4.2 V; (ii) Allow to stand for 2 hours; (iii) Discharge at 1C for 6min, and record the discharge capacity; (iv) Hold for 15min and record the voltage; (v) Repeat steps (iii) and (iv) for 9 times; (vi) Discharge at C/50 until the voltage reaches the lower limit, such as 3.0 V; (vii) Normalize the capacity voltage curves recorded in steps (iii) and (iv) to form a SOC voltage curve, and fit the mathematical expression of the open circuit voltage curve.

  (2) Low current charge discharge curve: charge and discharge at a very low magnification (such as 0.01C) current at constant current, set the upper and lower limits of voltage, and obtain the battery low current charge discharge curve. The point with the same amount of electricity is taken as the starting point of the curve. Average the voltage in the charge discharge curve, normalize the abscissa of the curve according to the theoretical capacity, and then use the curve fitting to obtain the open circuit voltage curve


Read recommendations:

18650 1000mAh 3.7V

What are the maintenance notes for lithium -ion battery for a long time?36v 7.5ah lithium ion batter

Polymer lithium battery and lithium battery difference

home solar energy storage lithium battery Product

18650 lithium battery 3.7 v

Last article:Deeply understand the voltage of lithium ion battery

Next article:Why are lithium batteries mostly small

Popular recommendation

1.5V Carbon Zinc Battery

2023-03-22

14500 battery direct sales

2023-03-22

lithium ion battery energy storage Processing

2023-05-10

601435 lipo battery company

2023-03-22

601248 battery wholesaler

2023-03-22

R14

2022-12-01

803040 1000mAh 3.7V

2022-06-27

LR03

2023-02-07

Coin Battery CR 1625

2022-09-27

Li-ion 21700 5000mAh 3.7V

2022-06-20

Rack-mounted energy storage battery GN-2560

2022-09-27

Lithium Battery LQ-1212

2022-08-19

Coin Battery CR 3032

2022-09-27

LR03

2022-08-19

14500 850mAh 3.7V

2022-06-20

18650 3500mah battery

2023-06-25

401030 polymer battery

2023-06-25

batteries 9v

2023-06-25

lithium battery 18650

2023-06-25

Nickel Hydride No. 5

2023-06-25

How high are the costs of litAG4 battery.hium-ion batteries compared to other battery technologies?

2023-11-16

Do you know all these terms in the battery industry

2024-08-22

Military vehicle power battery standard

2024-03-07

AG5 battery.Can I use a lithium-ion battery instead of a lead-acid battery in an existing forklift?

2023-11-20

CR1225 battery.Introduction and Development Status of Lithium Carbonate

2023-12-19

Features of battery management system (BMS)portable energy storage battery power supply direct sales

2023-04-25

Several misconceptions about lithium battery maintenance!18650 battery 3.7v 2200mah

2023-08-26

Popularize science about the maintenance of lithium-ion batteries!solar energy storage lithium ion b

2023-03-14

Five advantages of lithium iron phosphate battery

2022-11-08

Characteristics of lithium batteries.Nickel Hydride No. 5 batteries

2023-08-02
360° FACTORY VR TOUR
lithium ion battery 18650 priceWhatsapp
lithium ion battery 18650 price

lithium ion battery 18650 priceTel
+86 19925278095

lithium ion battery 18650 priceEmail
admin@sino-techgroup.com

TOP