DSP-based digital electric automobile charging method

A charging method and technology for electric vehicles, applied in electric vehicles, secondary battery charging/discharging, battery circuit devices, etc., can solve problems such as hindering the development of electric vehicles, low output voltage and current, and low charging efficiency, so as to improve charging efficiency , stabilize the output voltage, and realize the effect of automatic adjustment

Inactive Publication Date: 2015-12-23
ANHUI NORMAL UNIV
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Problems solved by technology

[0002] The general charging methods of electric vehicle batteries include conventional charging and fast charging. Among them, the conventional charging adopts the stage charging method, the output voltage and current are small, and the power is relatively low, and the single constant voltage and constant current charging method will cause Very low charging efficiency
The fast charging method uses a large current to charge the battery, and the charging time is short, but the cost is expensive, and the high current will cause serious damage to the battery and reduce its life, which seriously hinders the development of electric vehicles.

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  • DSP-based digital electric automobile charging method

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Embodiment Construction

[0014] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0015] The digital control charging control method of the present invention includes the following steps, step 1, the system control main program is initialized, including I / O ports, timers, watchdogs, FlexPWM modules, frequency modulation phase-locked loops, A / D conversion modules and General-purpose GPIO port; step 2, timing interrupt trigger, start A / D conversion, enter the interrupt service subrou...

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Abstract

The invention discloses a DSP-based digital electric automobile charging method comprising a step 1 that a system control main program carries out initialization; a step 2 that timer interruption is triggered in order to initiate A/D conversion, enter an interrupt service subroutine, read an acquired charging voltage value, compare the voltage value with a flag bit set by an A/D conversion module, stop PWM output if the acquired voltage value is greater than the set flag bit, and call a PI regulation subroutine to refresh the PWM output if the acquired voltage value is less than the set flag bit; and a step 3 that a FlexPWM module outputs a PWM pulse and adjusts the main power circuit output voltage according to an PWM output value. The DSP-based digital electric automobile charging method achieves full digital control of electric automobile charging by means of a DSP, reduces the cost of an electric automobile control circuit, improves the precision of the output voltage and the A/D conversion, and increasing charging efficiency.

Description

technical field [0001] The invention belongs to a battery charging method, in particular to a DSP-based digital electric vehicle charging method. Background technique [0002] The general charging methods of electric vehicle batteries include conventional charging and fast charging. Among them, the conventional charging adopts the stage charging method, the output voltage and current are small, and the power is relatively low, and the single constant voltage and constant current charging method will cause Charging efficiency is extremely low. The fast charging method uses a large current to charge the battery, and the charging time is short, but the cost is expensive, and the high current will cause serious damage to the battery and reduce the life span, which seriously hinders the development of electric vehicles. Contents of the invention [0003] According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is to prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 丁绪星黄薛龙王宸崔婷玉王兵兵
Owner ANHUI NORMAL UNIV
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