Wide-voltage isolation circuit, battery isolator, charger, inverter and carrier

A technology of isolating circuits and chargers, applied in the field of electronics, can solve the problems of unsatisfactory charging of secondary batteries, inability to realize three-stage or five-stage charging of secondary batteries, and large power diodes and relays.

CN112448596APending Publication Date: 2021-03-05天津九九电子有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-03-05

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Abstract

The invention discloses a wide-voltage isolation circuit, a battery isolator, a charger, an inverter and a carrier. The isolation circuit comprises an mcu circuit, a generator output circuit, a switchcircuit, a high-frequency power transformer circuit, a rectification and filter circuit, an auxiliary battery circuit, a generator voltage monitoring circuit, an auxiliary battery voltage monitoringcircuit and a power supply circuit. The input of the switch circuit is connected with the output of a generator, and the output of the switch circuit is connected with the input of the high-frequencypower transformer circuit. The output of the high-frequency power transformer circuit is connected with the input of the rectification and filter circuit. One end of the output of the rectification and filter circuit serves as a null line, and the other end serves as a positive line to be connected into a main loop for charging an auxiliary battery. By means of PWM mode control, the auxiliary battery is a charging system completely independent of the main battery, and can be charged completely according to the charging curve technical requirements of battery manufacturers.
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Description

technical field

[0001] It belongs to the field of electronic technology, and specifically relates to electric parts of automobiles and ships. Background technique

[0002] For ease of description, the present invention defines the following terms:

[0003] "Switch tube" refers to an electronic component in the present invention, which is a general term for triode, Darlington tube, and field effect tube;

[0004] "Voice chip" is the general term for the following three types of chips: dedicated voice chip, memory with voice data, or MCU with voice function. Some voice chips use "binding" (COB), such as most reversing chips;

[0005] "mcu" means a microprocessor;

[0006] "Speaker" includes buzzer speakers or dynamic speakers commonly used in the market;

[0007] "Power amplifier circuit" means a power amplifier circuit for speech signals;

[0008] "Battery isolator", also known as "dual battery isolator", refers to an electrical appliance that uses its own generator to...

Examples

Embodiment Construction

[0101] A wide voltage isolation circuit:

[0102] figure 1 It is a structural diagram of the wide-voltage isolation circuit of the present invention.

[0103] The charging main circuit according to the direction of electric energy transfer: generator output circuit 14-switching circuit 2-high-frequency power transformer circuit 20-rectification and filtering circuit 22-secondary battery 1.

[0104] The generator output circuit 14 includes a filter capacitor. In the case of low EMC requirements, it may not be used for cost.

[0105] The switch circuit 2 includes a switch tube and a drive circuit. The most commonly used switching tube is the mos field effect tube, which has the best performance and low price. Other Darlington and IGBT tubes can also be used. Especially in high power multi-purpose IGBT. Different tubes have different drive circuits.

[0106] The driving circuit of the switch circuit 2 varies according to different modes, such as forward, flyback, full brid...