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

News

Home  >  News  >  Industry News

Company News

Industry News

Lithium battery forced internal short circuit test

source:Industry News release time:2024-06-19 Hits:     Popular:AG11 battery

  

  The mandatory internal short circuit test was first proposed by relevant Japanese authorities. In 2019, a laptop battery produced by a Japanese company caught fire. After a detailed study and analysis of the cause of the battery fire, relevant parties believed that it was due to the mixing of small metal particles inside the lithium battery during the production process. These particles pierced the separator between the positive and negative electrodes, causing an internal short circuit in the battery and resulting in the battery fire. Forced internal short circuit test

  Analogous to the situation where metal particles puncture the diaphragm and cause an internal short circuit, the experiment examines the internal short circuit from two positions: between the positive electrode active substance and the negative electrode active substance; Positive aluminum foil - negative active material. During the experiment, the fully charged battery cells are first decomposed in an environment with a dew point lower than -25 ℃. Then, small nickel sheets are placed in the upper and lower positions, rolled back into the battery, and placed in sealed polyethylene bags. They are placed under the conditions of upper (lower) test temperature plus (minus) 5 ℃ for 45 minutes. Then, under the upper and lower test temperature conditions, a standard pressurization tool is used to apply pressure at a speed of 0.1mm/s to the position where the nickel sheets are placed until an internal short circuit is observed causing a voltage drop of 50mV or the pressure reaches the requirement (circular battery 800N, square battery 400N). The pressure is maintained for 30 seconds before being released. Require the battery to not ignite or explode in the event of an internal short circuit.

  The forced internal short circuit test has received a lot of controversy, mainly due to the damage to the electrochemical environment of the battery during disassembly. Although the disassembly process requires an environment with a dew point lower than -25 ℃, it still cannot fully guarantee that the battery maintains its original state. There is still some controversy about whether the rolled back cells can effectively simulate the internal short circuit of a normal battery.


Read recommendations:

18650 8000mAh 11.1V

Classification of polymer lithium batteries

Cylindrical lithium battery cell

14500 battery wholesale

AG1 battery

Last article:Fuel cell vehicles

Next:Safety standards for lithium batteries

Popular recommendation

521133 polymer battery

2023-03-22

photovoltaic energy storage battery manufacturer

2023-05-10

3.2v 60ah lifepo4 battery

2023-03-22

801738 polymer battery

2023-03-22

18650 battery pack company

2023-05-09

Coin Battery CR 927

2022-09-27

LR03

2022-12-07

R20

2023-03-27

Carpet game signs

2022-09-22

Lithium Battery LQ12-200

2022-08-19

Alkaline AA Battery LR06

2022-11-11

Li-ion 18650 3000mAh 3.7V

2022-06-20

Alkaline 9V Battery LR61

2022-11-11

18650 2400mAh 3.7V

2022-06-20

Rack-mounted energy storage battery GN-10240

2022-09-27

Dry Battery

2023-06-25

18650 li ion battery

2023-06-25

L822 battery

2023-06-25

NiMH battery pack

2023-06-25

Nickel Hydride No. 5 battery

2023-06-25

What are the development prospects and trends of lithium batteries

2024-09-04

Available Capacities of Lithium - ion Batteries

2025-03-06

Which Is Better for Tricycles: Lithium Ion Batteries or Lead Acid Batteries?

2025-02-14

Comparative analysis of lithium batteries and lead-acid batteries.18650 lithium rechargeable battery

2023-09-16

What are the effects of fast charging of mobile phone batteries.solar energy storage lithium ion bat

2023-10-07

Two major features of solid -state lithium ion batteries.cabinet type energy storage battery sales

2023-04-07

What are the main materials of lithium batteries analyzed?CR1616 battery

2023-06-21

How does lithium iron phosphate battery work at high temperature?6000mah 3.2v lifepo4 battery

2023-03-28

What are the advantages and disadvantages of the ternary lithium battery?

2022-11-25

What is the method to prevent customized lithium-ion battery drums.lithium 18650 li ion battery

2023-09-08
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