During the use of lithium batteries, overcharging, over-discharging and over-discharging will affect the battery life and performance. In severe cases, it will cause the lithium battery to burn and explode. There have been cases of mobile phone lithium battery explosion causing human injuries and IT often And mobile phone manufacturers recalling lithium battery products. Therefore, each lithium battery must be equipped with a safety protection board, which is composed of a dedicated IC and several external components, which can effectively monitor and prevent damage to the battery through the protection loop, and prevent combustion and explosion caused by overcharge, over-discharge, and short circuit. And other dangers.
Principle and function of lithium battery protection board
The short circuit of the lithium battery has a great risk factor. The short circuit will cause the battery to generate a lot of currents and also generate a lot of heat, which will seriously damage the service life of the battery. If it is more serious, the heat generated will cause the battery to burn and explode. . The protective effect of the customized lithium battery protection board is that when a large current is generated, the protection board will be turned off instantly so that the battery will no longer be energized and will not generate heat.
Lithium battery protection board functions: there are overcharge protection, discharge protection, overcurrent protection, short circuit protection, the protection board of the integrated scheme also has drop protection, in addition, it can also be equipped with equalization, temperature control and soft switching functions.
Personalized customization of lithium battery protection board
1. Battery type (ternary, iron-lithium, titanium-lithium), determine whether the battery resistance is in series (connected) or parallel (connected) 2. Determine whether the battery pack is charged at the same port or separate port, the same port is the same charge and discharge The root line and the separate port are independent of the charging line and the discharging line. 3. Determine the current value required by the protection board: I=P/U, that is, current=power/voltage, continuous working voltage, continuous charging and discharging current, and size. 4. Equalization means that when the voltages of the batteries in each string of the battery pack are not much different, the voltages of the batteries in each string tend to be consistent through the equalization resistance discharge. 5. Temperature control protection, which protects the battery pack by testing the temperature of the battery.
Main features of MANLY battery's lithium battery protection board
1: Originally imported chip
2: TVS upgrade protection
3: NTC electronic temperature control
4: Support personalized customization
Application field of lithium battery protection board
Applications: AGV, industrial vehicles, forklifts, high-speed electric motorcycles, ball carts, low-speed four-wheeled vehicles, and other medium and large-scale high-current power batteries.
Product features: The cloud platform remotely monitors battery data to achieve efficient management; multi-level work mode management to achieve long standby; with weak point switch to achieve output control; charger detection; integrated high-power pre-charge; three-way relay control output.
Product parameters:
■Number of strings: 5S~32S ■Battery core: ternary/lithium iron phosphate/lithium manganate/lithium titanate
■Interface: Flexible configuration
■Current: 100~600A
■Communication: RS485, TTL, GPS, GPRS
■Size: 180mm×120mm×19mm
■Protection function: cell voltage overcharge and overdischarge protection, charge and discharge overcurrent protection, short circuit protection and charge and discharge temperature protection.
