Digital products have penetrated into our daily lives, from mobile phones to cameras, laptops, e-books, everyone has their own digital baby. Batteries are an important part of these digital products, but improper use or poor quality of batteries will have certain safety hazards. In order to ensure the safety of the battery, the battery protection board came into being.

Definition of 1. battery protection board

Battery protection board (Battery Protection Board) is an electronic circuit board that can protect the battery. It is usually used in lithium batteries, polymer lithium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries and other battery types. It can control the charging, discharging, overcurrent, overvoltage, undervoltage and other states of the battery, and effectively protect the battery. Charge and discharge process to avoid battery damage, leakage, explosion, fire and other dangerous situations.

2. battery protection board composition

battery protection board is usually composed of main control chip, MOS tube, fuse, resistor, capacitor, etc. The main control chip is the core of the whole circuit board, which is responsible for controlling the various states of the battery and protecting the operation. The MOS tube is a switching element in the circuit board and is used to control the charging and discharging current of the battery. Fuses, resistors, capacitors and other components are used to protect the battery, control the battery current, overvoltage, undervoltage, etc.

The working principle of the 3. battery protection board

The working principle of the battery protection board mainly includes charging, discharging, overcurrent, overvoltage, undervoltage and other aspects.

1. Charging protection:

When the battery charging voltage reaches the set value, the main control chip in the protection board will turn off the MOS tube and stop the charging process of the battery, thus avoiding the damage of the battery due to overcharge.

2. discharge protection:

when the battery discharge voltage is lower than the set value, the main control chip in the protection board will switch off the MOS tube and stop the discharge process of the battery, thus avoiding the damage of the battery due to undervoltage.

3. Overcurrent protection:

When the discharge current of the battery exceeds the set value, the main control chip in the protection board will turn off the MOS tube to prevent the battery from being damaged due to overcurrent.

4. Overvoltage protection:

When the battery charging voltage exceeds the set value, the main control chip in the protection board will turn off the MOS tube to prevent the battery from being damaged due to overvoltage.

5. Under-voltage protection:

When the battery discharge voltage is lower than the set value, the main control chip in the protection board will turn off the MOS tube to prevent the battery from being damaged due to under-voltage.

Application scenarios of 4. battery protection boards

The application scenarios of battery protection boards are more extensive, mainly including the following aspects:

1. Power tools: Power tools usually require high current output, and lithium batteries The protection requirements for high-performance batteries are also very high. The battery protection board can effectively protect the charging and discharging process of the battery and improve the service life of the battery.

2. Drones: Drones usually require a lot of battery support, and battery safety is also very important. The battery protection board can help the drone better control the charging and discharging process of the battery, and improve the safety and service life of the battery.

3. Smart home: Smart light bulbs, smart sockets and other products in smart homes usually use batteries as power sources. The battery protection board can protect the charging and discharging process of the battery and extend the service life of the battery.

4. Car electronics: Electronic products that use batteries as power sources in cars require high reliability and high safety. The battery protection board can effectively protect the battery during use and ensure the safety and reliability of on-board electronic products. The advantages and disadvantages of

5. battery protection board The advantages of

battery protection board mainly include the following aspects:

1. It can effectively protect the battery and avoid the battery from overcharge, overdischarge, Overcurrent and other factors.

2. It can extend the service life of the battery.

3. Can improve the safety of the battery.

4. It can be applied to various types of batteries and has certain versatility.

The shortcomings of the battery protection board mainly include the following aspects:

1. Increase the complexity of the entire circuit and increase the cost.

2. Battery damage cannot be completely avoided, but the possibility of damage is reduced.

6. Summary

Battery protection board, as a new type of electronic circuit, has been gradually applied to various fields and achieved remarkable results. With the advancement of technology, the performance of battery protection boards will continue to improve, bringing more convenience and safety to our lives.