Analysis of the cause and explosion type of lithium battery

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - ซัพพลายเออร์สถานีพลังงานแบบพกพา

1: The internal polarization is large. 2: the pole water absorption, reacting the drum with the electrolyte. 3: The quality of the electrolyte itself, performance problem .

4: The amount of liquid in the liquid does not meet the process requirements. 5: assembly The laser welding in the process is poor, leakage, leakage, leakage. 6: dust, polar dust is first easily causing micro-short circuit.

7: The positive and negative poles are thick, the shell is difficult. 8: Nipple sealing problem, steel ball sealing performance is not good to cause gas drum. 9: The housing material exists thickness, and the thickness of the housing deformation.

The type of exploded type decomposing the battery core explosion can be summarized as an external short circuit, internal short circuit, Three kinds of. The external system here refers to the exterior of the battery, which contains short circuits caused by poor insulation design in the battery pack. جڏهن شارٽ سرڪٽ بيٽري سيل کان ٻاهر هوندو آهي، ته اليڪٽرانڪ جزو ڪٽيل نه هوندو آهي، ۽ بيٽري سيل جي اندروني حصي ۾ تيز گرمي هوندي آهي، جنهن جي نتيجي ۾ جزوي اليڪٽرولائيٽ اسٽيمنگ ٿيندي آهي، ۽ بيٽري شيل کي سپورٽ ڪندي آهي.

When the internal temperature of the battery is high to 135 degrees Celsius, the quality of the diaphragm is closed, the electrochemical reaction is terminated or near termination, the current is plummeted, and the temperature is slowly decreased, and the explosion occurred. However, the fine hole closure rate is too bad, or the fine hole does not close the diaphragm paper, which will make the battery temperature rise, more electrolyte, and finalize the battery housing, and even improve the battery temperature. Material burning and exploding.

The internal short circuit is to be because the brass foil is pulling the membrane of the aluminum foil, or the branches of the lithium atom wear the diaphragm. اهي نفيس سُوئيون مائڪرو شارٽ سرڪٽ جو سبب بڻجي سگهن ٿيون. Because the needle is very fine, there is a certain resistance value, so the current is not necessarily.

Copper aluminum foil burr is caused by processing, and it is observable. Moreover, since the glitch is small, sometimes it will be burnt, so that the battery will return to normal. تنهن ڪري، ڌماڪن جي ڪري ڌماڪي جو امڪان وڌيڪ نه آهي.

هن طريقي سان، هر هڪ سيل جي اندروني حصي مان هڪ ننڍڙي بيٽري کي اندروني طور تي چارج ڪرڻ ممڪن آهي. جيتوڻيڪ، ڌماڪي جو واقعو پيش آيو آهي، پر ان کي شمارياتي طور تي سپورٽ ڪيو ويو آهي. Therefore, the explosion caused by internal short circuits, it is still due to overcharge.

ڇاڪاڻ ته، اهو هڪ سوئي جي شڪل وارو ليٿيم ڌاتو ڪرسٽلائيزيشن آهي، ۽ اهو هڪ مائڪرو شارٽ سرڪٽ آهي. تنهن ڪري، بيٽري جو گرمي پد بتدريج وڌندو، ۽ آخرڪار تيز گرمي پد اليڪٽرولائيٽ گئس کي ختم ڪندو. This situation, whether it is too high to make the material burns, or the outer shell is first striking, so that the air into the lithium metal is violently oxidized, all of which are explosion.

جڏهن ته، هي ڌماڪو تمام گهڻو اندروني شارٽ سرڪٽ جي ڪري ضروري ناهي ته چارجنگ وقت ٿئي. اهو ممڪن آهي ته بيٽري جو گرمي پد وڌيڪ نه هجي ته جيئن مواد کي ساڙي سگهجي. جڏهن گئس ظاهر ٿئي ٿي، صارف بيٽري هائوسنگ کي ٽوڙڻ لاءِ ڪافي ناهي، صارف چارجنگ ختم ڪري ڇڏيندو، موبائل فون کي ٻاهر وڃڻ سان.

هن وقت، ڪيترن ئي مائڪرو شارٽ سرڪٽ جي گرمي، بيٽري جي گرمي پد کي آهستي آهستي وڌائي ٿي، ڪجهه وقت کان پوءِ، صرف ڌماڪو ٿئي ٿو. صارف جي عام وضاحت اها آهي ته هو فون کڻي ٿو ۽ ڏسي ٿو ته فون گرم آهي، ۽ پوءِ ڌماڪو ٿئي ٿو.