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Neware Battery Grading System EV Battery Echelon Utilization Capacity Analyzer
CT-4000 mainly applies for institutions , colleges and universities and EV battery manufacturers .
Accurate Timing
Most of us are considering the voltage and current accuracies are the all important factors of a battery tester , but actually timing accuracy is of the same importance .
Capacity or energy is calculated on time basis with the voltage and current measured , thus the timing accuracy will greatly affect the capacity calculated . To a general constant current or other constant testing regimes, this effect may not that easy to be observed .
Recycle Battery Function
If you have recovery battery pack , like Toyota Prius battery pack , generally, each piece has 6 single Ni - MH cell , then several pieces batteries assembed in one pack , and you need to check each single cell for capacity , cyclie life , resistance , etc . Then assemble the battery cell after sorting by capacity , resistance . You will get the new battery pack . And last you will test the battery pack to check the real capacity and other function parameter .
Driving Cycle Simulation
Driving cycles are used to simulate car fuel economy at different operating conditions . There are many driving schedules or driving cycles that are issued by various agencies or institutes. To simulate EV , you need to convert the speed output into the power consumption or regeneration of the energy storage device installed on the vehicle .
Simulation - the Way You Look into Reality
You know battery capacity at at constant current , or power , or load . But the reality is that no the energy is drawn by a constant variable . Your capacity or energy tested under constant conditions can only be a general one , and the cycle life tested such regime can also be largely deviated from reality . To have a better master of reality, simulation is introduced . GSM pulse is of such kind for phone batteries . for EV batteries , Drive Cycle Simulation is used .
| Project index | Parameter index | |
|---|---|---|
| resolution | AD 16bit , DA 16bit | |
| Input Resistance | More than 1MΩ | |
| Input Power | 16709W | |
| Channel Features | Constant Current Source and Constant Voltage Source with Independent pairs of Closed - loop Structure | |
| Channel Control Mode | Independent Control | |
| Voltage | Per Channel Voltage Range | 100mV - 20V |
| Discharge Min Voltage | 2.5V | |
| Accuracy | 0.05 percent of FS | |
| Stability | 0.05 percent of FS | |
| Time | Current Response Time | 20ms |
| Charge | Charge Mode | CCCharge , CVCharge , CCCVCharge , CPCharge |
| End Conditon | Voltage , Current , Relative Time , Capacity , -deltaV | |
| Discharge | Discharge Mode | CCD , CPD , CRD |
| End Condition | Voltage , Current , Relative Time , Capacity | |
| Pulse | charge | CCC , CPC |
| Discharge | CCD , CPD | |
| Min Pulse Width | 500ms | |
| Cycle | Loop Measure Range | 65535 times |
| Max Steps Per Loop | 254 | |
| Protection | Software Protection | Power - down Data Protection |
| Off - line Testing Function | ||
| Setting Protection Condition,Setting Parameter - Low Voltage limit , Upper Voltage limit , Low Current limit , Upper Current limit , Delay Time | ||
| IP protection level | Protection level IP20 | |
| Voltage and Current Testing Sample | 4 - wire connecting | |
| Noise | Less than 85dB | |
| Database | MySQL Database | |
| A Means of Communication of Upper Machine | TCP / IP Protocol | |
| Data Output | EXCEL , TXT , Graph | |
| Communication Interface | Ethernet Port | |
| Per Unit Main Channels No. | 2 | |
