2021-10-12 10:07:58
The safety of power bank depends not only on the cell of power bank, but also on the circuit board of power bank. Mobile electronic circuit board, as the control center of the whole power bank, mainly controls the voltage and current output and input of the power bank and other functions.
The state has clear regulations on the battery of power bank, and the specifications have very safe charging, cut-off voltage and safe discharge cut-off voltage. However, there is no explicit regulation on circuit board.
The biggest task of power bank is to charge the battery. The cost of mobile phone battery is high, and it has a set of self charging management system. However, when we need to charge the mobile phone, the battery will be discharged, because the voltage of portable devices is generally 5V. So the circuit board must have a 5V boost system. Both charging management system and boost system need circuit board to control. From the side, we can also express that the design of the internal circuit board of the power bank is directly related to the quality of the power bank.
After exposing a large number of safety accidents of power bank, manufacturers began to reflect on the safety of power bank. So the investment in circuit board design is increased. Add a layer of PC to the original design of the circuit board. Add fire-resistant plastic material, the pool temperature control function extends the service life of the battery. Fundamentally curb the problem of safety accidents of power bank, reduce the explosion caused by the control short circuit of circuit board.
Circuit board is a very important part in the power bank, but because manufacturers often ignore it, it leads to a circuit board problems, there are certain security risks. But in recent years, the circuit board has been reformed, which greatly improves the safety of the power bank.