The forklift battery relies on the energy storage as a power supply. It has a set of circuit design in the charge, discharge, once the circuit has failed, then the current output of the battery truck will increase, the time used naturally, the charging is also the same, the design is unreasonable, charge the design Like not or too large current input, the boost discharge circuit uses a double closed loop control method, and the controller output voltage is closed as a feedback signal. The given output voltage Vref is compared to the actual output voltage to obtain an error, and the current ring is given the current ring for the current ring. The given current IREF is compared to the actual controller output current to obtain a current error, and the PI regulator is sent to the PWM wave controller to generate a drive waveform. The drive waveform passes through the isolation drive control IGBT to turn off, perform DC / DC boost conversion, real-time change duty cycle to adjust the controller output current to control the output voltage to achieve target voltage; the electric forklift battery charging system is designed for this circuit The medium transformer can utilize a sufficient access to the old power, which is used for a short time to supplement the battery, and the power allows for a slightly charged power (24V or 12V, 10A), and the secondary voltage should be 18 ~ 22V. Since its charging current is a pulse current, it can improve the charging efficiency, or reduce the temperature rise of the transformer. VD1 ~ VD4 in the circuit pair AC voltage rectification, forming pulsating DC. Adjusting the RI to control the charging voltage L of the CZ to achieve the purpose of changing the VT1 emitter voltage. The VT1 base potential varies with the pulsation voltage, when it is below the emitter instant voltage, VT1 is turned on. The pressure drop on R4 makes VT2 turn. After R5, R6-voltage voltage to keep the conduction state, the diode VD5 triggers the unidirectional crystal asked V. The charging pulse flow is based on the battery pack. When the pulsation current is changed, V is shut down.The average current value of the battery charging is changed by adjusting the Ri to control the average current value of the battery charges. When R1 is adjusted to the rightmost end, the average current of the charge is the largest; it is the smallest. When several or more battery packs consisting in series, the main circuit current is ICH. Each series battery has a balanced bypass, BTI is a monomer battery, Si is MOSFET, and inductance Li is an energy storage element. Si, Li, DI constitute a shunt module MI. In a charging cycle, the circuit work process is divided into two phases: the voltage detection phase (Tm time is TV) and a basic charge (Tc). In the voltage detection phase, the equalization bypass circuit does not work, the main power supply is charged to the battery pack while detecting the cell voltage in the battery pack, and calculates the duty cycle of the MOSFET according to the control algorithm.
In the basic charge, the MOSFET triggered in the bypass is controlled by the calculated duty ratio, and the corresponding battery is processed. At this stage, the current flowing through each monomer battery is constantly changing, and it is also different. Remove the M1 connected to B1, all bypass shunt modules are the same.
In blocking bypass, due to the one-way conduction conduction of the diode Di, all of the shunt modules will transfer exefficient power from the corresponding battery to the upstream battery, and M1 shifts the excess amount to the downstream battery; Langs storage is a professional power supply, energy storage power, emergency power supply, start-up power supply, etc., the company's establishment, marking the official break of the traction car battery independent brand, and improve domestic and international electric forklifts, wind energy Industry of electric vehicles has important strategic, development, and continuous cooperation with multiple battery research institutions at home and abroad, learn from the world's advanced technology, design and development, scale, and future for forklifts, cars, etc. The variation of various editions market pattern will have a profound impact, which is the first to be green.
Article from: http://www.brcpower.com/ Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
