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Circuit configuration with charging function based on microcontroller

A technology of circuit structure and charging function, which is applied in the field of circuit structure based on microcontrollers to realize charging function, and can solve problems such as high cost, reduced circuit stability, and complex structure

Inactive Publication Date: 2014-12-17
CRM ICBG (WUXI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are still many peripheral components and chips, resulting in complex structure, high cost, and reduced circuit stability.

Method used

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  • Circuit configuration with charging function based on microcontroller
  • Circuit configuration with charging function based on microcontroller
  • Circuit configuration with charging function based on microcontroller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0047] see Figure 4 to Figure 7 As shown, the circuit structure based on the microcontroller to realize the charging function includes:

[0048] (1) Memory, which saves the circuit control calibration parameters; the memory is a non-volatile memory; the non-volatile memory is an OTPROM memory or a FlashROM memory;

[0049] (2) A voltage control module, connected to the memory, selectively generates and outputs constant current charging and negative feedback reference voltages, constant voltage charging and negative feedback reference voltages, and floating charge reference voltages at different charging stages; the voltage control module It is a voltage type DAC module;

[0050] (3) An integrated operational amplifier module, the positive terminal of the integrated operational amplifier module is connected to the constant current charge ne...

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Abstract

This invention relates to a circuit configuration with a charging function based on a microcontroller. The circuit includes a memory, a voltage control module, an integrated operational amplifier module, a multi-channel ADC module and a band-gap reference module. Performing negative feedback on sampling current and sampling voltage in real-time, the circuit configuration realizing the charging function based on the microcontroller controls charging voltage and current of a charger to realize constant current charging, constant voltage charging and float air charging, the calibrated parameters are stored in the nonvolatile memory of the microcontroller, so that the precision requirement of the resistor and capacitor installed in the complete appliance is not very high, procedure of manual installation of the precise resistor can be omitted and the production efficiency can be improved; requirement of working voltage is also reduced correspondingly, hence the voltage stabilizing module TL431 is not needed for providing precise 5V working voltage, the cost is reduced. On the basis of the original charging circuit, the peripheral elements and the inner resource of the circuit can be further reduced. The configuration is simple and practical, working performance is stable and reliable and applicable to a broad range.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to the technical field of charging control circuits, and specifically refers to a circuit structure based on a microcontroller to realize charging functions. Background technique [0002] The charging process of lead-acid batteries is divided into three stages: constant current charging, constant voltage charging, and floating charging; the process of these three stages is as follows: [0003] (1) Constant current charging: At this stage, the charger keeps the charging current of the battery at a constant value. As the charging time increases, the voltage of the battery continues to rise, and the acceptable charging current capacity of the battery continues to decline. When the voltage rises to a certain value, the constant current charging ends; [0004] (2) Constant voltage charging: After the constant current charging is completed, the battery charging enters the constant volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00G05F1/46
Inventor 陈长华邱丹顾宇飞徐佰新陈铭戈亦余谢兴华赵海王会刚王效
Owner CRM ICBG (WUXI) CO LTD
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