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Energy Business
Jay Li
Jay Li
 · Posted in Energy Business

Solutions for Testing Battery Pack Charge and Discharge Test Equipment

Pain Points of Traditional Lithium Battery Charging and Discharging Equipment Testing

Lithium-ion battery and battery pack charge and discharge test equipment are crucial for assessing performance, capacity, and safety. Accurate measurement characteristics of this equipment are vital for battery safety inspections. Traditional calibration methods, involving a combination of shunts and multimeters, present several challenges:

  1. Accuracy Issues: Traditional shunts (>0.1 level) do not meet the required accuracy for charge and discharge test equipment.
  2. Cumbersome Operation: External multimeters are required to measure voltage, which must be converted to current, complicating the process.
  3. Connection Errors: Terminal contact resistance affects measurement accuracy.
  4. Temperature Errors: Drift error and thermal EMF error over time undermine measurement accuracy.
  5. Low Efficiency: Calibration is time-consuming. Each device requires calibration at 20 points (current and voltage for both charge and discharge), taking at least 1.5 hours per device, allowing one worker to inspect only five devices per day, resulting in high costs.

DC Current Tester Advantages

A DC current tester offers significant improvements, capable of simultaneously measuring DC voltage, current, and active power with an accuracy of 0.01%. It is widely used in metrology research institutes, electric power, military industry, manufacturing, scientific research, and government inspection agencies for calibrating DC voltmeters, ammeters, and power meters.

Key Benefits:

  1. High Precision: Accuracy of 0.01%, meeting all measurement and calibration requirements.
  2. Ease of Use: Simple operation by passing the test cable through the instrument's round hole.
  3. No Human Error: Test cable position within the round hole does not affect accuracy.
  4. Long-Term Stability: Temperature drift is only 1ppm, ensuring long-term accuracy.
  5. High Efficiency: Each device requires only 10 minutes for testing, improving efficiency by nine times compared to traditional methods and significantly reducing manufacturing costs.

Features:

  1. Measures DC voltage, current, and active power.
  2. Equipped with RS232 and RS485 communication interfaces for direct PC communication.
  3. Automatic voltage and current multi-range switching, capable of measuring up to 110% of the limit.
  4. 5.6-inch LCD display.
  5. Online product program upgrade function.

High-Precision DC Tester Parameters:

  • Voltage Measurement Range: ±(0.1V～1000V)
  • Maximum Allowable Error: ±0.01% RD