Multi-Functions DAQ

The multi-function data acquisition system is integrated with the battery charge-discharge test system. Featuring high precision, high sampling rates, flexible configuration, and hardware redundancy protection, it enables real-time acquisition, recording, and monitoring of battery voltage and temperature, thereby enhancing test safety.

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Detailed Introduction

The Multi-Functions DAQ is a high-precision data acquisition system designed for integration with battery charge-discharge testing systems. It enables synchronized monitoring of key battery parameters, including voltage and temperature, during testing and evaluation.

The system supports high-accuracy voltage acquisition with a configurable input range, as well as NTC and thermocouple temperature measurement for different battery testing requirements. With a voltage acquisition rate of up to 10 ms, it can capture rapid changes in battery operating conditions and provide detailed test data for performance analysis and safety monitoring.

System Features

High Accuracy Voltage and Temperature Data Acquisition

10ms High Acquisition Rate

Flexibly configure the number of acquisition channels

Dual-protection of Hardware and Software

Key System Parameters

Battery Voltage DAQ
Voltage Acquistion Range	-5V to +5V (available to customized from -10V to +10v)
Voltage Acquistion Accuracy	s±0.02%F.S at 25°C±5°℃
Resolution	0.1mV
Acquistion Rate	10ms

Thermocouple Temperature DAQ
K/T Thermocouple Acquisition Range	from -60°℃ to 200°℃ (available to customized 1000°C)
K/T Thermocouple Acquisition Accuracy	±1℃
Resolution	0.1℃
Acquistion Rate	500ms

NTC Temperature DAQ
NTC Temperature Range	-40℃ to 125℃
NTC Acquisition Accuracy	±1℃ (available to customized ±0.5℃
Resolution	0.1℃
Acquisition Rate	500ms

Nos of DAQ Channel
Voltage Channel	64CH (available to customized)
Temperature Channel	32CH (available to customized)

FAQ

Battery Overvoltage

Battery voltage exceeds the upper voltage limit, confirmation time 0.2s

Use a multimeter to measure the actual battery voltage and compare it with the voltage displayed on the BTS to check if the sample values are consistent.
If the sample value and the actual value are not equal, confirm whether the issue is with the DC board or the wiring by swapping the sampling lines with adjacent channels. If the wiring is faulty, check for incorrect, loose, or poor connections in the voltage sampling lines.
If the sample value and the actual value are equal, check if the upper computer step settings are reasonable and determine if the battery overvoltage occurs as soon as the step runs or at a specific point during the step.
Check the corresponding battery for any obvious swelling, damage, or other abnormalities. If there are issues, take necessary safety measures.
If the battery and voltage sampling lines are normal, confirm that the DC board is faulty and replace it.

Battery Undervoltage

Battery voltage is lower than the lower voltage limit, confirmation time 0.2s

Use a multimeter to measure the actual battery voltage and compare it with the voltage displayed on the BTS to check if the sample values are consistent.
If the sample value and the actual value are not equal, confirm whether the issue is with the DC board or the wiring by swapping the sampling lines with adjacent channels. If the wiring is faulty, check for incorrect, loose, or poor connections in the voltage sampling lines.
If the sample value and the actual value are equal, check if the upper computer step settings are reasonable and determine if the battery undervoltage occurs as soon as the step runs or at a specific point during the step.
Check the corresponding battery for any obvious swelling, damage, or other abnormalities. If there are issues, take necessary safety measures.
If the battery and voltage sampling lines are normal, confirm that the DC board is faulty and replace it.

Communication Failure

Module 6S does not receive data from the upper computer, switches to fault state. The fault is automatically cleared when the module receives data from the upper computer.

Check if the module and the middle computer are in a normal powered-on state.
Check if the CAN connection between the module and the middle computer is normal.
Check if the CANA dip switch is set correctly.
Measure the matching resistance between CAN H and CAN L on the CANA bus. It should be 60±5 ohms. If not, adjust the matching resistance on the signal adapter board. If the bus voltage is normal, check the BTS fault records to identify which sub-channel triggered the fault. Use debugging software tools to check if the bus voltage displayed for that channel is normal. If abnormal, it can be determined that the DC board's bus sampling is faulty, and the board should be replaced.
If all the above points are normal, connect a CAN box and use the captured messages to determine whether the issue lies with the middle computer or the lower computer.

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Our range of battery test equipment includes various specialized test systems such as the Milliampere-level Test System, IT Battery Test System, and EV Battery Test System, among others