Model 17020 Regenerative Battery Pack Test System

CE Mark
Key Features:
  • Regenerative battery energy discharge
    • Energy saving
    • Environment protection
    • Low heat output
  • Channels paralleled for higher currents
  • Charge / discharge mode (CC, CV, CP)
       
    • Constant current  
    • Constant voltage  
    • Constant power
  • Driving cycle simulation
  • High precision measurement accuracy
  • Fast current conversion
  • Smooth current without over shoot
  • Testing data analysis function
  • Data recovery protection (after power failure)
  • Independent protection of multi-channel
  • Total harmonic distortion: less than 5% of rated power

Chroma's 17020 is a high precision system specifically designed for secondary battery modules and pack tests. Accurate sources and measurements ensure the test quality that is suitable to perform repetitive and reliable tests that are crucial for battery modules / packs, for both incoming or outgoing inspections as well as capacity, performance, production and qualication testing.

Chroma's 17020 system architecture offers regenerative discharge designed to recycle the electric energy sourced by the battery module ei ther back to the channel s in the sys tem performing a charging function or to the utility mains in the most energy efficient manner. This feature saves electricity, reduces the facilities thermal foot print and provides a green solution by reducing the environmental impact on our planet.

Chroma's 17020 system is equipped with multiple independent channels to support dedicated charge / discharge tests, on multiple battery modules / packs, each with discrete test characteristics. The channels can easily be paralleled to support higher current requirements. This feature provides the ultimate flexibility between high channel count and high current testing.

Advanced hardware design can create seamless transitions between maximum charge and maximum discharge (or maximum discharge and maximum charge) with a rapid 50 ms conversion. This feature allows for charge/discharge modes simulating real world scenarios.

Chroma's 17020 system has exible programming functions and may be operated with Chroma's powerful Battery Pro software. Battery Pro utilizes the system to create cycling tests from basic charge or discharge to complex drive cycle testing for each channel or channel groups. A thermal chamber control can be integrated into a profile and triggered by time or test results yielding a dynamic profile. Battery Pro's features allows quick and intuitive test development to eliminate the need of tedious scripting or programming by a software engineer.

There are multiple safety features including Battery Polarity Check, Over Voltage Protection, Over Current Protection check and Over Temperature Protection to ensure protected charge / discharge testing. In the unlikely event of power or computer communication loss, the data is securely stored in the system, on a non-volatile memory, protecting against potential data loss and allowing for continuous ow after restart.

APPLICATIONS

Battery Pack

  • EV battery module
  • Electric scooter/ bike
  • UPS
  • Electric gardening tools
  • Energy storage battery
  • Power tools
  • Car battery
  • Lead-acid battery

Application

  • Drive cycle simulator
  • Learning test for manufactory
  • Life cycle test
  • Balance control test
  • DCIR test
  • Capacity test
  • Performance test
  • Reliability test
  • Over charge/dischargetest
  • Thermal test

 

REGENERATIVE ENERGY

  • Regenerative battery energy discharge
    -Direct recycle back to the battery unber charging
    -Regenerate to grid
  • Low heat output
  • Reduce air-conditioner power consumption
  • The THD of 17020 system is under 5% at rated power
  • The PF is over 0.9 at rated power
  • Return to factory directly

regenerative battery energy discharge 

regenerative energy

PARALLEL FUNCTIONS

Parallel function

Parallel function

Multi-channels

  • Supports various capacity batteries by paralleling
  • The system supports different capacity batteries from a base system configuration
  • Battery companies have various capacity configurations. Some customers may purchase a high power system to test all capacity battery packs. The downside is that measurements accuracy are not
Multi-channels 
Multi-channels


DRIVING CYCLE SIMULATION

Driving cycle simulation
The battery pack always is used at quick and un-regular current condition. The system simulates the real condition on battery pack by working condition simulator.

  • Import dynamic charge/discharge power or current waveforms to simulate the DRIVE CYCLE or the actual application.
  • Support Excel (xls) format
  • There are 720,000 points of driving profile memory to save the waveform profile in each channel.
  • Minimum Δt:10ms

High accuracy capacity calculation
Voltage/current sampling rate of 50kHz used for calculations of capacity ratings in dynamic waveform mode.

  • V/I sampling rate : 50KHz
    Minimum data acquisition: 10ms
  • Integrate calculus :
    For I : Capacity
    For V x I : Energy
driving cycle simulation
driving cycle simulation

SOFTWARE FUNCTION

Independent Channels

  • Independent channel operation
  • Independent testing data
  • Independent protection
  • Independent testing process

Operating mode

  • Constant current (CC) mode
  • Constant voltage (CV) mode
  • Constant power (CP) mode
  • Constant voltage-limit current mode (CC-CV)
  • Waveform current mode
  • DCIR mode
  • Rest

Cut-off mode

  • Time (s)
  • Capacity (Ah)
  • Voltage (V)
  • Current (A)
  • Temperature (℃)
  • Channel data in data logger (Option)

Protections

  • Over voltage protection (V)
  • Under voltage protection (V)
  • Over current protection (A)
  • Over temperature protection (℃)
  • Over capacity protection (Ah)
  • Wire loss protection (ΔV)
  • Channel data in data logger (Option)
  • -ΔV /+ΔV protection (V)
  • +ΔI /-ΔI protection (A)
  • Delta Protection: Protect internal short of battery cell

Testing Data

  • Independent testing data
  • Detail report: STEP/TEST TIME/TEST TIME ID/
    Cycle/Loop/STEP MODE /STEP TIME/
    VOLTAGE(V)/CURRENT(A)/CAPACITY (Ah)/
    Energy (Wh)/ TEMPERATURE (℃)/
    Data Logger Channel (Option)
  • STEP/STEP NO/LOOP/CYCLE/STATUS/
    STEP START TIME/ STEP MODE /CUT OFF VOLTAGE(V) /
    CUT OFF CURRENT(A)/CUT OFF CAPACITY(Ah) /
    DCIR(mOhm)/Energy (Wh)/TEMPERATURE (℃)/
    Data Logger Channel (Option)

Compact Size

  • The dimensions of a regenerative system is smaller compared to a system that has to dissipate energy.

Continuous transition
Continuous charge and discharge transition: No time delay to transit from charge to discharge. The user can verify the battery pack for a design limit.
Continuous CC-CV transition: No overshoot current or voltage to damage the battery when transiting CC-CV.

Response time

  • The trip time between maximum charge and maximum discharge current is 50ms.
  • Smooth current without overshoot for avoiding to damage the battery.
Response time

Temperature Measurement

  • Temperature measured for each channel within the range of 0~90℃±2℃.
  • 4 sets of measurements (Max) per channel to measure the battery surface temperature.
Thermal sensor

Independent battery connections
For battery pack design, the charge and discharge connections are independent. Users can set 17020's channels with independent charge / discharge connections to isolate each operation independently.

Independent battery connections

Data Recovery Function

  • 60 min of temporary data storage when sampling time is 1 sec.
  • Save the test settings to resume after power failure is recovered.

SOFTWARE FUNCTION

The 17020 Test system is specifically designed to meet the various requirements for testing secondary battery packs with high safety and stability. Charge and discharge protection aborts tests when abnormal conditions are detected. Data loss, storage and recovery are protected against power failure.

User friendly

  • Real-time multi channel battery pack status browse
  • Icon Manager: Test status of each channel is managed through different icons, easy to read and understand.
  • Authority management: It sets the user's authority for operation.
  • Fault record tracking: It records the abnormal state of each channel independently.

Recipe editor

  • 255 charge/discharge conditions
  • Sets dual layer loops (cycle & loop) with 9999 loops per layer
  • Able to edit dynamic charge/discharge waveform with 10ms current switching speed
  • Testing Step: CV/CC/CP/CC-CV/Waveform current/DCIR)
  • Cut-off conditions
    (time, current, capacity, cut-off voltage, cut-off current, etc.)
  • Next Step: Next/End/Jump/Rest

Testing Data

  • Generate the detailed report and step report
  • Customized report format
  • Exports test reports in PDF, CSV and XLS
  • Graphical report function
  • Report analysis Function: Users can create customized reports such as life-cycle report, Q (AH)-V(V) report, V(V)/I(A)/T( ℃)-time report⋯etc through the user-defined X and Y axis parameters.
  • Real-time browsing test reports of each channel
  • Diversified reports & charts: Real-time report, Cut-off report, X-Y scatter chart report

Software integration

  • BMS communication interface:Collect the BMS data to controls the charge/ discharge profile and protection setting.
  • Data logger: Collect the data logger to controls the charge/ discharge profile and protection setting.
  • Thermal Chambers:It synchronize temperature control with charge/discharge profile.
Software integration
 

thermal chambers


What CHROMA data loggers see,
constant rate each channel
Sample rate per channel = constant
Minimum: 200ms