Wireless Stack Technology: How to Prevent Outdoor Power Station Parallel Use from Causing Damage?

In outdoor activities and emergency power usage scenarios, the parallel use of outdoor power stations is becoming more and more common. However, when using parallel connections, issues such as voltage desynchronization and circulating currents can lead to equipment damage or even fires and other safety accidents. These have become the focus of user concerns. This article will delve into the intelligent management technology for outdoor power station parallel use, especially how wireless stack technology can effectively prevent equipment damage.

I. CAN Bus Communication: Precision of Voltage Synchronization for Multi – unit Parallel Connection

• Principle and Advantages of CAN Bus Communication: The CAN (Controller Area Network) bus is a communication protocol commonly used in industrial control and automotive electronics. It is now also applied to the parallel management of outdoor power stations. When multiple outdoor power stations are connected in parallel, the CAN bus enables high – speed and reliable communication between each power station. Through the CAN bus, each power station can exchange key data such as voltage and current in real – time, thereby achieving precise voltage synchronization control.
• Test Data of Voltage Synchronization Precision and Case Studies: In laboratory tests, outdoor power stations supporting CAN bus communication were used for parallel experiments. The results showed that with CAN bus intelligent management, the voltage synchronization precision of multiple parallel – connected outdoor power stations can reach ±0.05V. This high – precision voltage synchronization effectively avoids circulating current problems caused by voltage differences. In contrast, parallel – connected outdoor power stations of a certain brand without intelligent synchronization functions exhibited voltage differences of over 0.5V, leading to obvious circulating currents that affected power station life and safety.

II. Sudden Load Test: Circulating Current Suppression During 2000W Drill Startup

• Challenges of Sudden Loads to Parallel Power Stations: In outdoor work scenarios, sudden high – power load startups, such as those of drills and impact wrenches, are common. Take a 2000W drill startup as an example. The instantaneous high – current demand can significantly impact the parallel power station system. If the power station system cannot effectively suppress circulating currents, it may lead to overload, damage, or even safety accidents.
• Circulating Current Suppression Effect of Wireless Stack Technology: The outdoor power station parallel system using wireless stack technology performed excellently when facing a 2000W drill startup. Through intelligent algorithms and fast communication, the system can adjust the output of each power station within milliseconds to suppress circulating currents. Test data showed that the circulating current suppression effect of the parallel power station using wireless stack technology during drill startup reached over 95%, ensuring stable system operation. In comparison, traditional parallel power stations under the same test conditions achieved a circulating current suppression effect of less than 60%, with some power stations even triggering over – load protection.

III. Safety Design: Active Cell Balancing Circuit Breakdown of Lithium Iron Phosphate Cells

• Features and Balancing Requirements of Lithium Iron Phosphate Cells: Lithium iron phosphate cells, known for their long life, high safety, and good thermal stability, are the preferred cell type for outdoor power stations. However, in power station systems composed of multiple parallel – connected cells, voltage imbalance can occur due to individual cell differences. Long – term voltage imbalance not only affects power station performance but can also lead to over – charging and over – discharging of cells, posing safety hazards.
• Working Principle and Breakdown Analysis of Active Cell Balancing Circuit: Advanced outdoor power stations employ active cell balancing circuits to ensure the safety of lithium iron phosphate cell parallel connections. The active cell balancing circuit monitors each cell’s voltage in real – time and uses DC – DC conversion technology to transfer energy between cells, achieving balanced voltage distribution. Upon disassembling an outdoor power station with active cell balancing capabilities, it was found that its balancing circuit utilized high – precision voltage sensors and an efficient energy management system. Actual tests showed that after continuous use for 100 hours, the voltage difference between cells in this power station was still controlled within ±0.02V, significantly enhancing the safety and reliability of the power station system.

IV. Extreme Case: Fire Accident Caused by Series – parallel Connection of Lead – acid Battery and Lithium Battery

• Risks of Series – parallel Connection of Lead – acid and Lithium Batteries: In some old outdoor power systems, lead – acid batteries and lithium batteries may be connected in a mixed series – parallel configuration. There are significant differences between these two battery types in terms of electrochemical properties and charge – discharge curves. Lead – acid batteries have a lower voltage platform with large voltage fluctuations during charge and discharge, while lithium batteries (especially lithium iron phosphate batteries) have a relatively stable voltage platform. When used in mixed series – parallel connections, charging imbalance and over – charging can easily occur, leading to heat accumulation, battery expansion, and even fires and explosions.
• Compatibility and Safety Assurance of Wireless Stack Technology: Outdoor power station systems supporting wireless stack technology are equipped with excellent battery type recognition and compatibility management functions. The system can automatically identify the battery types in parallel connection and adjust the charging strategy according to the battery characteristics. During a test of a system containing both lead – acid and lithium batteries, the wireless stack technology successfully identified the different battery types, alerted the user to the compatibility issue, and automatically cut off the charging circuit. This effectively avoided potential safety accidents.

Wireless stack technology plays a key role in the intelligent management of outdoor power station parallel connections. By utilizing CAN bus communication to achieve high – precision voltage synchronization, effectively suppressing circulating currents caused by sudden loads, and working in conjunction with the active cell balancing circuit for lithium iron phosphate cells and intelligent recognition and handling of extreme cases, it greatly enhances the safety and reliability of outdoor power station parallel use. When selecting an outdoor power station parallel solution, priority should be given to products with advanced wireless stack technology to ensure the safety and stability of outdoor power usage.