High Precision Power Battery Comprehensive Test System Testing Equipment
AOT
Xiamen, China
10-25 working days
50 Sets/Month
AOT-DC-20V50C1000D battery comprehensive test system, 20kW high-power charging and discharging, ±0.05% voltage accuracy, four-wire AC/DC internal resistance detection, real-time uploading of MES data, support for code-sweeping startup and overcurrent protection test, power battery pack full performance verification solutions.
The battery comprehensive test system, also known as the battery comprehensive performance testing system or battery comprehensive tester, is a device used to test the comprehensive performance of finished and semi-finished battery packs. After manual wiring, the battery comprehensive test system automatically tests and determines whether it is qualified, and records data automatically. The upper computer developed based on the ASP.NET platform has powerful data processing capabilities, is stable and reliable, and can save test data in real-time to the database and upload it to the MES system.
System basic functions (basic testing items)
Basic Function
1.OCV
The battery voltage measured by the device when the battery pack is not being charged or discharged.
2.ACIR
The AC internal resistance of the battery is measured using a four wire measurement method. A sine wave current signal (with a frequency of 1KHZ and a constant current of<100mA) is injected into the positive and negative terminals of the battery pack, and a series of processes such as voltage sampling, rectification, and filtering are used to accurately measure the AC impedance of the battery.
3.DCIR
Connect high current discharge loads at both ends of the battery pack, and calculate the resistance value using Ohm's law based on the voltages U1 and U2 at different currents I1 and I2. This equipment adopts the IEC (International Electrotechnical Commission) testing method for fast and accurate testing.
4.Charging activation (charging wake-up)
The battery pack needs to be charged and activated when it is in idle or BMS is in sleep or protection mode.
5.Charging voltage
Conduct a charging test on the battery pack based on the set voltage, current, and charging time to check if the charging function of the battery pack is normal.
(1) Charging voltage: The voltage output by the device to charge the battery pack.
(2) Charging current: Charge the battery pack according to the set current value.
(3) Charging voltage difference: the voltage difference between the beginning and end of charging.
6.Charging current
7.Charging voltage difference
8.Charging DCR
(4) Charging DCR: Evaluating the equivalent charging internal resistance during charging
9.Charging overcurrent protection
Charging overcurrent protection refers to the protective measures automatically taken by the BMS in the battery pack during the charging process, when the charging current exceeds the preset safe value, to prevent damage to the battery pack caused by excessive current. This device can test whether the battery pack has charging overcurrent protection function and the specific current value of the protection current.
10.Discharge voltage (load voltage)
Test the discharge function and load capacity of the battery pack based on the set discharge current size and time.
(1) Discharge voltage: The voltage measured during the discharge of a battery pack.
(2) Discharge current: The current value output by a battery pack during discharge.
(3) Discharge voltage difference: the voltage difference between the beginning and end of discharge.
11.Discharge current (load current)
12.Discharge voltage difference
13.Discharge overcurrent protection (OCP)
Discharge overcurrent protection refers to the protective measures automatically taken by the BMS in the battery pack during the discharge process, when the discharge current exceeds the preset safe value, to prevent damage to the battery pack caused by excessive current. This device can test whether the battery pack has discharge overcurrent protection function and the specific current value of the protection current.
14.Foot switch activated
Mechanical foot switch, which replaces manual operation with foot stepping, improves work efficiency and safety.
15.Scan code to start (barcode recording)
By scanning one-dimensional and two-dimensional codes to activate the device for testing, the convenience and intelligence of the device can be improved. The scanned barcode is saved together with the test results in the database, and the test results can be queried and traced based on this barcode in the later stage.
16.MES system connection
After the testing is completed, the test results of this device can be easily and quickly uploaded to the MES system (Manufacturing Execution System).
Parameters
Model
AOT-DC-20V50C1000D
Power
Charging power: 1KW
Discharging power: 20KW
Communication input interface
1. Input single-phase AC220V ± 10%
2. Input current: maximum 7A
3. Frequency 50Hz
Voltage test range
±20V
Charging voltage range
0~20V
Discharging voltage range
5~20V
Charging current range
0.1~50A
Charging overcurrent protection current range
0.1~50A
Discharging current range
0.1~1000A
Discharging overcurrent protection current range
0.1~1000A
Voltage accuracy
±0.05% of F.S±0.05% of F.D
Charging current accuracy
±0.2% of F.S±0.5% of F.D
Discharging current accuracy
±0.2% of F.S±0.2% of F.D
Charging and discharging time
0~20S
Overcurrent delay time
0~20S
Accuracy of discharge overcurrent test
±1A
Accuracy of charging overcurrent test
±1A
Voltage resolution
1mV
Current resolution
1mA
Voltage and current detection sampling
Four wire connection
Data save mode
Save data in CSV file format
AC impedance （ACR）
1~20000mΩ
DC impedance （DCIR）
1~20000mΩ(Customizable discharge current and time)
Short circuit protection test time
1~5000us
Minimum short-circuit internal resistance test for short-circuit protection
15mΩ
Communication method
RS232 serial port (computer and device)
Power-off protection
Automatically disconnect the electrical connection between the battery and the device after an unexpected power outage in the communication input
Emergency stop function
Pressing the emergency stop button will disconnect the electrical connection between the battery and the device, and turn off the load power of the device
Cooling method
Forced air cooling
Dimension（W*D*H）
680*850*1710mm
Temperature
-20℃~50℃
Humidity
10-90%RH
Product display
High Precision Power Battery Comprehensive Test System Testing Equipment
Battery Comprehensive test system Features
Modular design of the whole machine, strong stability and reliability, easy maintenance and upgrading;
The battery comprehensive test system has the functions of charge discharge reverse connection protection and reverse connection prompt;
The main control chip adopts high-performance ARM, ensuring smooth and stable device operation;
Using a 24 bit ADC, the battery comprehensive test system has higher precision in voltage and current testing than the industry;
The upper computer software operation interface is concise and clear, the sequence of testing steps can be edited, and the testing parameters can be adjusted;
The voltage and current are sampled using a four wire system, which has high voltage sampling accuracy and good long-term stability;
Support one-dimensional code and two-dimensional code, support scanning code start/foot pedal start;
Test data can be automatically saved, with a powerful database for easy quality traceability.
Exhibition
AOT Lithium Battery Equipment exhibition provides exhibitors and visitors with a comprehensive platform for display, exchange, cooperation and trade. By participating in the exhibition, enterprises can understand the industry dynamics, expand market channels, enhance brand image and promote technological innovation and industrial upgrading.
Certificate
Cooperative partners
FAQ
Q1: How to ensure the long-term stability of the voltage accuracy of 4-wire measurement?
A: The use of gold-plated probes and shielded cables, along with monthly calibration of the standard voltage source (supplied with the unit), ensures that ±0.05% FS accuracy error can be maintained for more than 3 years.
Q2: How to control the heat dissipation during 1000A high current discharge?
A: Built-in dual turbine air-cooling system (noise <65dB), combined with real-time temperature monitoring, if the internal temperature > 50 ℃ automatic load shedding, to prevent overheating damage to the device.
Q3: Does the scanning start function support customized barcode formats?
A: The battery comprehensive test system supports GS1-128, Code 128 and other mainstream industrial barcodes. If you need to customize your company's exclusive coding rules, we can provide SDK interface for secondary development.
Q4: How to realize 1~5000μs time accuracy for short circuit protection test?
A: The battery comprehensive test system based on FPGA high-speed sampling circuit (1MHz frequency), the trigger response delay is <10μs, which can accurately capture the BMS protection action time.
Q5: Do I need to configure the MES system?
A: OPC UA protocol comes standard, supporting plug-and-play with Siemens, Rockwell and other mainstream MES systems without additional middleware.
