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Vehicle-mounted charger energy saving and power saving control device and control method

An on-board charger and control device technology, which is applied to battery circuit devices, circuit devices, control/regulation systems, etc., can solve the problems of difficulty in realizing zero-voltage switching ZVS, high efficiency of on-board chargers, and easy noise pollution. The effect of easy heat dissipation, miniaturization, and reduction of ripple current effects

Pending Publication Date: 2018-02-02
XIAMEN MAHENGDA AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a complete machine with higher efficiency, energy saving and electricity saving in order to solve the current situation that the existing new energy on-board charger is difficult to achieve high efficiency, is susceptible to noise pollution and electromagnetic interference, is troublesome to maintain, and is difficult to realize zero voltage switch ZVS. , easy to dissipate heat, reduce ripple current and ripple current, and enhance product competitiveness, an energy-saving and power-saving control device and implementation method for on-board chargers

Method used

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  • Vehicle-mounted charger energy saving and power saving control device and control method

Examples

Experimental program
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Embodiment 1

[0024] figure 1 , figure 2In the shown embodiment, an energy-saving and power-saving control device for an on-board charger includes a first full-wave rectification circuit 20, an input over / undervoltage detection circuit 11, a DC / DC conversion circuit 40 and a BMS system 90, and also includes an interleaved Type PFC circuit 20, CPU controller 70, second full-wave rectification circuit 50 and output relay 60, CPU controller 70 communicates with BMS system 90 through CAN transceiver 80, interleaved PFC circuit 30 and DC / DC conversion circuit 40 A current transformer T1 is connected between them, the interleaved PFC circuit 30 is electrically connected to the rear stage of the first full-wave rectification circuit 20, the second full-wave rectification circuit 50 is electrically connected to the rear stage of the DC / DC conversion circuit 40, and the output relay 60 is electrically connected to Connected to the rear stage of the second full-wave rectification circuit 50; the in...

Embodiment 2

[0026] figure 1 , figure 2 In the shown embodiment 1, an energy-saving and power-saving control method for an on-board charger includes the following steps:

[0027] a. After the mains is input, it is converted into DC voltage by full-wave rectification to supply power to the auxiliary power supply, and the auxiliary power supply provides VCC voltage to provide voltage for the chips used in each channel;

[0028] b. The CPU controller collects the input AC voltage over / undervoltage detection signal, input current detection signal, output current / voltage detection signal and power battery detection signal;

[0029] c. The BMS system sends a signal to the CPU controller through the CAN transceiver conversion signal, and compares it with the internal reference parameters. If it is normal, turn on the interleaved PFC circuit and DC / DC conversion circuit of Embodiment 1 to enter the charging state. If the acquisition If the received charging information is abnormal, the CPU cont...

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Abstract

The invention discloses a vehicle-mounted charger energy saving and power saving control device and control method. The vehicle-mounted charger energy saving and power saving control device comprisesa first full wave rectifying circuit, a staggered PFC circuit, a DC / DC conversion circuit, a second full wave rectifying circuit and an output relay which are arranged in turn. A CPU controller is connected with a BMS system in a communication way through a CAN transceiver. A current transformer is connected between the staggered PFC circuit and the DC / DC conversion circuit. An input overvoltage / undervoltage detection circuit, the staggered PFC circuit, the DC / DC conversion circuit, the second full wave rectifying circuit and the output relay are electrically connected with the CPU controller.The CPU controller is provided with a CPU controller input overvoltage / undervoltage monitoring end pin, a PFC current detection end pin, a PFC enabling monitoring end pin, an output current end pin,an output voltage end pin and a power battery voltage detection end pin. Energy and power can be saved, heat radiation is facilitated and the ripple current can be reduced.

Description

technical field [0001] The invention relates to a charging control, in particular to an energy-saving and power-saving control device for an on-board charger used for charging an electric vehicle battery and a method for realizing it. Background technique [0002] With the continuous promotion of electric vehicles, charging power sources are increasingly used on a large scale. Most of the existing charging power sources use PFC (Power Factor Correction) pre-regulators. However, with the maturity of single-phase active PFC technology and the further improvement of power level, the use of the original single-weight PFC scheme is limited. Because of the increase in power, the switching devices of single PFC have to withstand high instantaneous voltage and current stress, which makes it difficult to select devices, increases the cost, and will also increase the voltage and current transients at key points in the circuit, resulting in serious of radiated and conducted EMI. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/08H02M7/219H02M3/335H02M1/12H02M1/44
CPCH02J7/085H02M1/126H02M1/44H02M3/33592H02M7/219
Inventor 张勇林立成蓝怀盛曾纪杭
Owner XIAMEN MAHENGDA AUTO PARTS