Using high-quality iron phosphate lithium batteries, Industrial inverter module, BMS management system based on Imported chips, Lithium battery has perfect multiple protections, detect single string voltage of battery accurately, balances management effectively, and manages multiple strings lithium batteries intelligently with the features of reliability and high intelligence.
1.Design requirements:According to product specifications and customer requirements, design the intelligent lithium battery to match the host engine, integrate the high-security, high-efficiency automatic equalization management, intelligent battery management, outstanding recycle life and other functions the solution.
- A.Protection Board (PCM): According to the chemical properties of lithium-iron phosphate battery, targeted to design the protection circuit, in addition to overcharge, over discharge, over current, short circuit protection and over-temperature protection, the protection board design also have to provide the batteries’ power detection and equalization.
- B.Protection circuit: Use imported IC and MOS tube, and constantly monitor the situation of overcharge, over discharge, over current, short circuit occurring, so that the chip can operate in a safe, stable and efficient condition.
- C.Overcurrent fuse: mainly to protect the failure of lithium battery management system. The battery pack usually use high power battery cells with large capacity, although the battery management system have overcurrent and short circuit protection, if there happens an exception it will also lead to failure of protection, and output short circuit will produce very large current. Thus we have to add overcurrent fuse, when an exception occurs, the fuse will disconnect circuit，and unrecoverable, to achieve the purpose of abnormal protection.
- D.Battery cells: Use the LARGE26650/3.2V/3000mAh lithium iron phosphate battery cells, with high consistency, high safety and high cycle life up to 2000 times. The parameter of the entire set of battery is 12.8V/60Ah.
- E.Design Current: Normal operating current is 20A, the maximum operating current can up to 30A, instantaneous starting current can be reached to 60A
- F.The built-in Resistive balanced protection board car battery pack can effectively compensate for reducing capacity caused by the differences of batteries monomer，and maximizing battery life.
- G.Batteries in parallel unit: PTC isolation avoids the inrush current security issues caused by high capacity.
- H.Large current of the main circuit of the battery uses copper as collector bar, and try to make single battery discharge current close.
- I. The method that battery pack uses plastic brackets to isolate and fix batteries is more conducive to safe use and battery cooling.
2.Pictures of Industrial Portable Emergency Power Battery