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release time:2024-04-07 Hits: Popular:AG11 battery
Inverter 3.7v 2200mah 18650 lithium battery design circuit based on ARM7 and DSP
Today, with the development of electrical intelligence everywhere, inverter power systems (Inverted 3.7v 2200mah 18650 lithium battery System, IPS) are indispensable in countless power consumption situations to provide stable and high-quality power for field equipment, especially in communication equipment rooms, server workstations, and transportation hub dispatch centers. , hospitals, electric power, industrial and mining enterprises and other places that have strict requirements on 3.7v 2200mah 18650 lithium battery security. Many IPS products do not comply with or lag behind modern power concepts because they follow traditional designs. This is highlighted by the single complexity of the control module, backward controller chips and heavy control tasks, and simulated closed-loop control without achieving ideal monitoring and feedback adjustment effects. , and thus brings hidden dangers in the software and hardware design of a single control device, which has a negative impact on the IPS power output, and even leads to catastrophic consequences for electrical equipment due to 3.7v 2200mah 18650 lithium battery failure. Digital control technology is becoming increasingly mature and has been applied in some leading concept power equipment control applications, highlighting that modular and digital control has become an inevitable trend.
This article describes the IPS core control circuit jointly controlled by the ARM7Cortex-M3 based microcontroller STM32F103 and the TIC2000 series DSP chip TMS320F2808, and proposes improvements to address the deficiencies in the above products. The designed IPS core control circuit has been proven through test simulation and field test results that this new IPS design improves the IPS structural design, meets the high requirements of IPS operation, and enriches human-computer interaction interfaces such as remote monitoring, thus indirectly affecting many aspects. Save users' management costs.
1Overall introduction to inverter 3.7v 2200mah 18650 lithium battery
In order to meet the requirements of power-sensitive equipment for inverter power, the target IPS uses the circuit designed this time as the core; uses a high-speed digital signal microprocessor (DSPTMS320F2808) and peripheral devices as signal generation and feedback detection and adjustment modules; uses ARM7 microcontroller STM32F103 and its peripherals are used as human-computer interaction logic control modules, and the two modules are interactively controlled collaboratively. Apply hardware self-feedback to adjust SPWM waveform output, and use DSP digital algorithm to provide high-precision phase locking technology. Software programming performs fully digital sub-task module control. The DSP module performs the control waveform generation, feedback adjustment, lead-acid battery charging waveform generation and adjustment, self-test and self-detection functions required for IGBT inversion, and controls all independent circuits on the circuit board. Connect to perform functions such as self-test and fault analysis. The ARM7 module performs tasks such as parameter setting, operation management, environmental parameter monitoring, and human-computer interaction processing. The DSP module control strives to be precise, while the ARM module has complete system-level event management functions. As shown in Figure 1, the two modules are independent of each other in terms of tasks but closely related to each other. They work together to maintain the normal operation of the IPS through division of labor and coordination.
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