BYH3105_XP133A1145SR Introduction

A MOS tube is a semiconductor device in which unipolar carriers participate in conduction. According to the carrier of the conduction channel, it can be divided into N channel and P channel. Assuming that the carriers of the conductive channel are electrons, it is called an N-channel; assuming that the carriers are holes, it is called a P-channel.

The power mos used on electric vehicles is a three-dimensional structure. Low-power mos is a planar structure. The mos tube we have seen is actually composed of thousands of small mos tubes in parallel. You may think that one or a few bad moss should easily appear in thousands of small mos. In fact, it is not that easy. , the current manufacturing process basically guarantees the high consistency of various parameters of these small units.

BYH3105_XP133A1145SR

BYM31020 BYS31010 BYJ3104 BYH3105 BYP3109.

BYP31538 BYP31510 BYP31575 BYH31574 BYD31523A.

BYF32018A BYD32011Z BYF32090 BYJ32056 BYP32011A.

BYF32038 BYP32036 BYS32042 BYH32085A BYP32091A.

BYH3105_XP133A1145SR

AP4224M

BYI3245 BYN3226 BYN3232 BYS326 BYD32515Z.

BYP32028 BYS32010 BYJ32027A BYH326 BYH323.

BYJ337 BYN3324 BYG3333 BYN3330 BYS3312.

BYF3104 BYH3108 BYF3109 BYM31032 BYN31333A.

BYH3105_XP133A1145SR

The battery cell is equivalent to the heart of the lithium battery, and the lithium battery protection board is mainly composed of a protection chip (or management chip), a MOS tube, a resistor, a capacitor, and a PCB board.

The functions of the MOS tube in the protection board are: 1. Detect overcharge, 2. Detect over-discharge, 3. Detect over-current during charging, 4. Detect over-current during discharge, 5. Detect over-current during short circuit.

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