The power battery serves as the primary energy source for tools like electric vehicles, trains, bicycles, and golf carts. Unlike the starting battery used to ignite car engines, valve-sealed lead-acid, open-tube lead-acid, and lithium iron phosphate batteries are commonly employed.
Let's delve into the seven common issues encountered with power batteries and their respective solutions:
First, voltage-related malfunctions:
1. High voltage: After full charge, some cells exhibit significantly higher voltages than Others.
- Cause: Potential errors in acquisition, ineffective LMU equalization, or low cell capacity.
- Solution: Verify actual voltage values and recalibrate the LMU or manually discharge/charge the affected cells. Ensure proper connection of voltage sampling lines and replace the LMU if necessary.
2. Low voltage: A single cell or a few cells show lower voltages post-full charge.
- Cause: Acquisition errors, LMU malfunction, high self-discharge rates, or low cell capacity.
- Solution: Check voltage accuracy, calibrate the LMU, manually charge/ discharge problematic cells, inspect voltage sampling lines, and replace faulty cells if needed.
3. Voltage differences: Dynamic/static voltage differences occur during charge or under load.
- Cause: Loose connections, dirty surfaces, high self-discharge rates, or internal cell faults.
- Solution: Tighten connections, clean surfaces, and replace faulty battery packs.
4. Voltage spikes: Voltage fluctuations while driving or charging.
- Cause: Loose voltage collection lines or LMU faults.
- Solution: Secure connections and replace the LMU.
Second, temperature-related failures:
1. Heating/cooling system issues: Fans or heaters malfunctioning.
- Solutions involve checking relays, power circuits, and ensuring proper thermal management.
2. High/low temperatures: Alarms triggered due to extreme temperatures.
- Solutions include calibrating sensors, ensuring proper cooling, isolating heat sources, and replacing faulty components.
Third, charging problems:
1. DC charging failures: Issues like failure to start or SOC not resetting.
- Solutions involve diagnosing the battery, repairing faulty parts, and analyzing charging messages.
Fourth, insulation issues: Water ingress or high humidity causing false alarms.
- Solutions include identifying and addressing leakage points.
Fifth, communication failures: Loss of LMU/BMU communication.
- Solutions involve replacing faulty units and checking communication lines.
Sixth, SOC anomalies: Inaccuracies or erratic behavior in State of Charge readings.
- Solutions involve verifying data integrity and repairing faulty components.
Seventh, current abnormalities: Issues with current readings.
- Solutions involve checking Hall effect sensors and their circuits.
In summary, understanding these common issues and their remedies can significantly enhance battery performance and longevity. Proper maintenance and timely interventions are crucial to prevent major breakdowns.
IC SOCKET & Machined SOCKET
IC SOCKET & Machined SOCKET
HuiZhou Antenk Electronics Co., LTD , https://www.atkconn.com