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mini cooper fuse box symbols meaning.Application of PPTC chip fuse in single lithium battery

11

2023-11

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　　Nowadays, more and more products such as mobile phones, digital cameras (cameras), PDAs, MP3/4, etc. use lithium batteries as the power supply for system circuits. The requirements for power supply emphasize the advantages of lithium batteries such as small size, high energy density, no memory effect, and the ability to be reused multiple times. However, lithium battery explosions have also occurred frequently recently.

　　So the safety of lithium-ion batteries is increasingly attracting people's attention. Choosing the appropriate patch fuse for the lithium battery protection board is also very important.

　　1、 Composition of a single lithium battery

　　Lithium batteries mainly consist of battery cells and battery protection plates (as shown in Figure 2)

　　The main functions of the lithium battery protection board are: (1) overcharging protection, (2) over discharge protection, (3) overcurrent/short circuit protection

　　Main components of lithium battery protection board: 1. Protection IC2, MOSFET3, SMDFUSE

　　2、 Selection of Fuses on Single Lithium Battery Protection Board

　　1. Packaging: The trial size is determined based on the customer's circuit board, usually 1206/0603 size.

　　2. Rated voltage: above 24V

　　3. Rated current: Generally, 5A is used (considering that the fuse is protected twice on the lithium battery protection board, so

　　Consider the protection delay time of the protection IC to determine the fuse blowing time

　　4. Cold resistance: below 15m Ω

　　5. Safety requirements: UL certification

　　6. Comply with RoHS requirements and Halogen Free requirements

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MB:+86 13924633629 Ms.vicky

E-mail: waimao@xcfuse.com


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XC Electronics(Shenzhen)Corp.,LTD

Add: Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China


Shenzhen branch: Shenzhen Xucheng Electronic Commerce co.Ltd

Add: 8-15 Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China

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