As the global shipping industry transitions to green energy, the widespread adoption of electric ships has become an irreversible trend. In this process, the safety and stability of the electric ship’s battery system, as the core of its power, directly determine the ship’s mileage and operational safety. However, battery packs, composed of numerous individual cells connected in series and parallel, inevitably experience inconsistencies in cell voltage during long-term charge-discharge cycles. Addressing this industry pain point, Guheng Energy provides the industry with efficient and precise maintenance tools through advanced active balancing technology, ensuring navigation reliability in complex aquatic environments.
Why is the voltage difference between individual cells a hidden killer for electric ship batteries?
During operation, electric ships require battery packs to output enormous power to drive the propellers and the ship’s electrical system. Due to slight differences in battery manufacturing processes, uneven temperature distribution in the operating environment, and variations in self-discharge rates, the voltage difference between individual cells gradually widens over time. This “inconsistency” is the root cause of the battery pack’s performance degradation.
What is active balancing technology? Let’s see how a battery balancing and maintenance device achieves precise energy distribution.
To address these issues, regular in-depth maintenance using a professional battery equalization and maintenance device is essential . Unlike traditional passive equalization (which converts excess electrical energy into heat through resistor discharge), the active equalization technology employed by Guheng Energy represents the current high-end standard in the industry.
What are the main technical differences between active balancing and passive balancing?
The core logic of active balancing technology is “energy transfer,” which involves transferring electrical energy from high-voltage cells to low-voltage cells through controlled circuits. This method not only avoids energy waste but also prevents additional heat buildup, offering extremely high safety for the enclosed and complex heat dissipation environment of ship engine rooms. Through the precise intervention of the battery balancing maintenance device, the voltage of each cell within the entire battery pack can be restored to a highly consistent state, with deviations typically controlled within an extremely narrow range of ≤1mV.
What are the core technical parameters of the Guheng Energy PBM-P series?
Guheng Energy’s PBM-P series equipment deeply integrates multiple independently developed patents, and its technical structure is as follows:
- Ultra-high precision acquisition system: It has a voltage acquisition accuracy of ±1mV and can keenly capture the slight potential differences between individual cells.
- Multiple modes for flexible operation: Supports three working modes: parallel charging maintenance, parallel discharging maintenance, and equalization maintenance, and can formulate personalized repair solutions for electric ship batteries in different health conditions.
- Modular design: It adopts a modular and unitized channel design, supports multiple configurations such as 12 and 16 channels, and a single unit can cover the maintenance needs of battery packs of different sizes.
- Multiple protection mechanisms: Hardware and software multi-level protection, with overvoltage, undervoltage, reverse connection, short circuit and overtemperature protection for the battery, ensuring that the battery pack will not be damaged during maintenance.
How to implement a standardized maintenance process for electric ship batteries?
What steps are involved in closed-loop management from data collection to result verification?
Maintenance technicians typically follow these procedures when using a battery pack equalization maintenance device:
- Preliminary diagnosis: Use comprehensive testing tools (such as BST-DW series or ETS series) to assess the overall condition of the battery pack and determine whether there is significant capacity degradation or fault alarm.
- Precise data acquisition: Connect to BWT series voltage acquisition instruments or PBM devices to acquire raw voltage data of each individual cell in real time.
- Intelligent analysis: Utilizing the software algorithms of the back-end management system, analyze the individual cell voltage deviation and SOC status to determine whether equalization needs to be initiated.
- Perform balancing: Set the cutoff voltage and balancing current level, start the battery balancing maintenance device to perform active balancing operation, and transfer energy from the high end to the low end.
- Report verification: After maintenance, a second measurement is taken to confirm that the pressure difference has been eliminated, and a visual maintenance report is generated with one click through the system, enabling data to be archived in the cloud.
Conclusion
The safe navigation of electric vessels begins with precise management of even the slightest differences in battery performance. By introducing Guheng Energy’s active balancing technology, operators can effectively address the issues of power interruption and shortened lifespan caused by individual cell pressure differences. Whether it’s improving range or ensuring the core power system, professional battery pack balancing maintenance equipment is an indispensable maintenance foundation for modern fleets. Guheng Energy will continue to deepen its expertise in new energy service technologies, making every battery pack more durable and every voyage safer.
FAQ
Q: Why does Guheng Energy recommend using active balancing instead of passive balancing for the maintenance of electric ship batteries?
A: Passive balancing consumes excess energy through heat generation, which is not only inefficient but also increases the thermal management burden on the battery pack. In contrast, Guheng Energy’s active balancing technology achieves efficient and consistent repair through energy transfer, making it more suitable for the harsh environment of ship engine rooms, which are sensitive to heat.
Q: Can a battery equalization and maintenance device completely repair a dead battery?
A: Battery equalization and maintenance devices are mainly used to repair capacity and lifespan degradation caused by poor consistency and restore system performance by correcting voltage deviations; however, if a battery cell has suffered physical damage or reached the end of its cycle life, equalization technology cannot reverse the physicochemical failure.
Q: Does Guheng Energy’s battery pack equalization and maintenance device support remote monitoring and data management?
A: Yes, the Guheng Energy PBM series equipment is equipped with a powerful back-end management system that supports equipment status tracking, cloud interaction of test parameters, and one-click export of maintenance reports, helping enterprises achieve digital asset management.
Q: How often should a deep equalization maintenance be performed on the batteries of electric marine vessels?
A: This depends on the workload and the quality of the original battery. It is generally recommended to perform standardized maintenance immediately using a battery equalization device when scheduled inspections are conducted or when a BMS differential pressure alarm is detected or the driving range is significantly shortened, in order to prevent a precipitous drop in battery performance.
