Briefly describe the conditions of large-capacity polymer battery explosion and the protection method of battery

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

The explosive conditions of the explosion conditions of the polymer battery and the protection method of the battery have a large-capacity polymer battery exploded or combustion due to strong chemical reactions inside the battery, and there is a large amount of heat and gas. In order to promote the strong chemical response of the battery, some necessary external conditions must be met: 1. The battery is seriously overchaled, the chemical system of the lithium-ion battery determines that when the battery is overchaired, LiCoO2 in the battery becomes a CO3O4, and CO3O4 is a strong The oxidant can be reacted with an electrolyte, and the gas (O2) can be attacked.

Oxygen continues to react with electrolyte water (H2O), water can continue to react with lithium, electrolyte…Therefore, the internal heat of the battery will attack a lot of gases, and the response will follow the voltage rise, rise, in general, more than 4.2V battery voltage attack, there is such a reaction, when the reaches of 5V, the battery voltage and the battery internal temperature and gas pressure New, most batteries will burn, because internal short circuit attacks (polymer battery) or blasting rigid package (liquid). The specific response process is as follows: 2.

The battery is heated by high temperature. When the battery is heated by high temperature, the electrolyte evaporates decomposition. The internal pressure of the battery increases, the isolation membrane inside the battery may melt, resulting in short circuit inside the battery and incinerates.

The higher the battery voltage, the shorter the high temperature resistance. The picture below shows the coke thermal characteristic curve of different data: 3. The battery is short.

When the battery is fully charged, it suddenly shorts. 1) External short-circuit battery, liquid rigid package battery, because the temperature rise of the battery, internal electrolyte decomposition and evaporation, may cause the internal pressure of the battery too much, and now blast, and some battery due to various reasons, the initial internal pressure has always been Large, short circuit, battery, or blast under high temperature. Soft packing battery, except for short circuit, will bulle, or crack.

No burning. 2) short circuit in the battery. When the battery is charged, due to various reasons, the temperature will rise sharply when the positive electrode and negative electrode inside the battery are short, which will cause serious reactions in the battery inside.

In this case, the core of the hard shell bag will explode, while the core of the polymer flexible package will combustion. Solved the above aspects, now there is an important maintenance board, PTC, special charger, and fuses, etc. Maintaining the Board of Directors, discharging batteries and overcurrent levels, PTC is a large short-circuit current, the battery overheating current secondary maintenance battery, charger is constrained battery charging current and voltage, and with a small fuse, now it is now The use is completely completely intercepted by battery voltage or current, ensuring that the battery will not be used again, ensuring that the battery will not have serious accidents.

Therefore, the reliability of these maintenance equipment directly affects the safety application of the battery, should attract satisfaction. .

CONTACT US
Just tell us your requirements, we can do more than you can imagine.
Send your inquiry
Chat with Us

Send your inquiry

Choose a different language
English
العربية
Deutsch
Español
français
italiano
日本語
한국어
Português
русский
简体中文
繁體中文
Afrikaans
አማርኛ
Azərbaycan
Беларуская
български
বাংলা
Bosanski
Català
Sugbuanon
Corsu
čeština
Cymraeg
dansk
Ελληνικά
Esperanto
Eesti
Euskara
فارسی
Suomi
Frysk
Gaeilgenah
Gàidhlig
Galego
ગુજરાતી
Hausa
Ōlelo Hawaiʻi
हिन्दी
Hmong
Hrvatski
Kreyòl ayisyen
Magyar
հայերեն
bahasa Indonesia
Igbo
Íslenska
עִברִית
Basa Jawa
ქართველი
Қазақ Тілі
ខ្មែរ
ಕನ್ನಡ
Kurdî (Kurmancî)
Кыргызча
Latin
Lëtzebuergesch
ລາວ
lietuvių
latviešu valoda‎
Malagasy
Maori
Македонски
മലയാളം
Монгол
मराठी
Bahasa Melayu
Maltese
ဗမာ
नेपाली
Nederlands
norsk
Chicheŵa
ਪੰਜਾਬੀ
Polski
پښتو
Română
سنڌي
සිංහල
Slovenčina
Slovenščina
Faasamoa
Shona
Af Soomaali
Shqip
Српски
Sesotho
Sundanese
svenska
Kiswahili
தமிழ்
తెలుగు
Точики
ภาษาไทย
Pilipino
Türkçe
Українська
اردو
O'zbek
Tiếng Việt
Xhosa
יידיש
èdè Yorùbá
Zulu
Current language:English