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

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.

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...

AI Technical Summary

Problems solved by technology

[0018] 2. Charging the auxiliary battery: the charging current of the general battery is less than 0.1C, that is, 10% of the capacity

Obviously, traditional isolators can't do it, because there is no limitless flow function at all;

[0019] 3. The auxiliary battery is not fully charged: because the three-stage or five-stage charging of the auxiliary battery cannot be realized

Obviously, traditional isolators cannot do it;

[0020] 4. The auxiliary battery has no temperature compensation and temperature protection: the battery manufacturer requires temperature compensation, which has a specific temperature coefficient

Obviously, traditional isolators cannot do it;

[0021] 5. Different types of secondary batteries cannot be charged: for example, the main battery is lead-acid, and the secondary battery is lithium battery;

[0022] 6. The voltage of the auxiliary battery is different and cannot be charged: for example, the main battery is 24V, and the auxiliary battery is 12V

Do not charge a secondary battery with a voltage higher than that of the main battery;

[0023] 7. High power consumption: Traditional isolators rely on relays to work, and the work of relays requires a large current, often greater than 30~50mA

The forward conduction of the diode also consumes a lot of power: for example, 50A charging, the diode voltage drop is 0.5V, and the power consumption is 50*0.5=25W;

[0024] 8. Short service life: because the relay has contacts;

[0025] 9. Large size and high cost: Power diodes and relays are large and expensive

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