BATTERY FUSE PLUS

BATTERY FUSE PLUS

This protection circuit consists of two MOSFETs and a control IC plus some RC components. Typical lithium-ion rechargeable battery protection circuit diagram Here the following diagram (a typical lithium-ion rechargeable battery protection circuit diagram) is used as an example to illustrate the battery protection circuit and working principle:

As a overcurrent protection device, the fuse can protect the lithium ion rechargeable battery from damage due to large current and short circuit during charging or discharging.

Placing protective circuits in the batteries can effectively protect the battery from damage caused by overcharge, overdischarge, and overcurrent or improper use. Lithium-ion rechargeable batteries are one type of lithium batteries (rechargeable secondary batteries). In recent years, with the miniaturization and popularization of mobile appliances, lithium-ion rechargeable batteries have the advantages of small size, light weight, high output voltage, stable discharge voltage, long storage time, etc., which has led to a dramatic increase in the amount of lithium-ion rechargeable batteries used in appliances. The fuse in the rechargeable battery acts as a secondary overcurrent protection in conjunction with the IC control loop to effectively monitor and prevent battery damage. 2022.During the use of lithium-ion rechargeable batteries, overcharge, overdischarge, and overcurrent will affect battery life, performance, and safety.

“ Typical fuse links applications in a Hybrid and Electric Vehicle (HEV)“, Eaton, accessed 05 Jan.

“ Fuse“, IDC Technologies, accessed 05 Jan.

A poor fusing performance can cause explosion of the contactors. Therefore, contactors and fuses are sized together to give an overall system based level of protection. Contactor and fuse compatibility is essential for a safe electrical system. Therefore, fusing behavior could be different.Ī fuse does not protect the electrical system by itself. These components can dissipate or accumulate heat.

The most significant influencing factors are electrical system specifications:īesides, busbars and neighbor components make an impact on the working performance of a fuse. Similarly, air pressure caused by altitude, vibration, and mechanical shocks changes the fusing behavior. Thermal conditions may accelerate or decelerate the melting event. These parameters are thermal and mechanical conditions as well as electrical system specifications. Since the fuses protect the electrical system of battery as a result of a melting event, a battery designer needs to consider external parameters. However, pyro fuses also interrupt the circuit during higher current flow than the current limit. Electrical designers use pyro fuses in case the electrical circuit needs to be broken via an external signal. Just like airbag systems, pyro fuses may be a part of HV systems. On the other hand, pyro fuses can actively interrupt circuits. Fundamental parts of passive fuses are melting element, fuse body with filler and fuse terminals. To avoid electrical arcs, the fuse body has an internal filler element, some quartz sand, for instance. During high currents above a certain limit, the internal part melts and breaks the circuit. They have a weak internal structure as a melting element. Passive fuses break the circuit only as a result of high currents for a certain time. We can use passive fuses and pyro fuses in battery design. Fuses are protection devices that protect electrical circuits against undesired high currents.

Battery fuse