无刷电瓶车单片机控制器原理与检修（Principle and maintenance of single-chip microcomputer controller for brushless storage battery）.doc

无刷电瓶车单片机控制器原理与检修（Principle and maintenance of single-chip microcomputer controller for brushless storage battery） Brushless car battery controller principle and maintenance of.Txt a carton of cigarettes one computer one day a person a bottle of wine a dish of bean over night. Always carry a woman small temper, women will not resist the blandishments of men. Brush the car battery controller principle and maintenance Sichuan Wu Jiulin MCU PICl6F72 is currently the car battery controller main control chip, with 2 74HC27 (3 input or gate circuit); 1 74HC04D (inverter); 1 74HC08D (2-input and gate) and a LM358 (dual), composed of a brushless controller battery car typical, with a 60 degree and 120 degree drive mode automatic switching function, the basic block diagram shown in Figure L. Physical mapping principle is shown in Figure 2 (shown in the data unless otherwise indicated, all parking lock state data). A brief introduction and self checking circuit Open the electric door lock, 48V battery DC power input to the controller through a switch by sewing, R3, R13, R4 to U6 the feet as the battery voltage detection, another way to U13, U14, U15 and +5V to IC and +15V output drive power supply. PICl6F72 microcontroller to the foot, external 16MHz crystal, the foot with R13, C25 reset circuit, switch lock unlock, microcontroller to power after entering the initialization state, it detects: 1. by R3, R73, R4, R11, C2l and other components of the battery voltage detection circuit (typically the 3.8V U6 pin input). 2. by R5, R6, U1 and other components of the final current detecting and overcurrent protection circuit (normal value of the output of the 0V Ul of the foot, foot output of about 3.6V). 3. turn the reset signal (normal low level 6 feet U6 input about 0.8V). The 4. brake reset signal (normal U6 and high level 4.8V pin input). Brushless motor motor 5. phase signal Holzer element detected (normally at least one Holzer line input is 4.1V, the other is 0V). After the sel