Chroma transfers its successful experience in 8000 ATS which is quite well-known in the power electronics industry to the battery application field by developing the Test Items specifically for the battery industry. It can perform automatic tests on the Battery Management System (BMS), semi products and finished products tests on the production line as well as provide long term maintenance and service to the battery module. Chroma 8720 (Chroma 8000) ATS has flexible hardware architecture that can select a variety of hardware devices, such as DC Power Supply, Electronic Load, LCR Meter and 6 1/2 digits Meter, etc. to comply with different automatic testing requirements for various applications. In addition new hardware and test items can be expanded to meet the demands for inspecting the highly customized battery products with diversified tests. The capabilities supported are:
- Discharge Ability:
- 2.6kW~15.6kW/ 0~80V/ 0~1000V/ 0~1000A
- Master/Slave parallel operation up to 93.6kW
- Charge Ability:
- 600W~15kW/ 0~1000V/ 0~375A
- Master/Slave parallel operation up to a max of 5 units
Chroma 8000 (Chroma 8720) has standard test items specifically customized and optimized for the features of battery pack and battery module that provide excellent test performance to meet the demands of mass production. Meanwhile, the software equipped is very friendly and easy to operate that is suitable for production line use.
The Chroma 8720 ATS runs under the easy-to-learn Windows 7/10 environment with a specialized power test system for test engineers so that they can utilize the Windows resources effortlessly.
BMS Function Test, Battery (failure) Simulator
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Battery cells voltage unbalance test/OVP test/UVP test/OCP test/Output resistance test/BMS data compare/BMS accuracy test/other user-defined items.
Application
E-bike／E-motor／ESS／EV module
Key Features
- 20~25 series cell voltage simulation
- Support active and passive balance test
- Expandable voltage and current range
- Open and programmable test items to be expanded as desired
- Battery pack dual-output inspection
- Resistance measurement
- BMS IC firmware burn-in
- BMS communication inspection
- BMS supports CANBus, RS485 and RS232 interfaces
- BMS supports power consumption measurement
- BMS IC V/I/T calibration
- Over voltage protection test (see also current charge status)
- Under voltage protection test (see also current discharge status)
- Discharge overcurrent protection test
- Over temperature protection test
Standard Test Items
- Over voltage protection test (multistage applicable)
- Under voltage protection test (multistage applicable)
- Overcurrent charge protection test (multistage applicable)
- Overcurrent discharge protection test (multistage applicable)
- Over temperature protection test (multistage applicable)
Customized test items
- BMS IC wake up, firmware and parameter burn-in
- BMS data comparison
- BMS IC V/I/T calibration
- Charge and discharge test and BMS accuracy test
- BMS balance function test
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Battery Pack Semi-finished and Finished Battery Modules
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Application
Battery packs of 2~4 wheels light electric vehicles
Key Features
- Inspects battery pack characteristics
- Inspects protection functions
- Inspects consistency of string battery cells
Main Features and Specifications of the Test Solution
- Performs function testing for semi-finished and finished battery packs
- Inspects BMS functions, BMS communication, capacity, DC internal resistance, AC internal resistance, charge/ discharge performance, output resistance
- Inspects overcurrent and short current protections
- Inspects consistency of voltage and temperature for string battery cells
- Charge/discharge voltage range: 0V~150V
- Charge/discharge current range: 0A~26
This test system can be combined with automated manufacturing solutions and can be integrated into an automated production line for battery packs.
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Battery Module Maintenance and Certification Test
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Application
Any battery or battery pack
Test items
- DC resistance measurement: This is the basic action for confirming battery status. The DC resistance (Ohm) affects the battery cell’s capacity and the charge/discharge level of pressure difference. DC Resistance generally tends to be the first hurdle for battery testing or maintenance.
- Battery cell balance test: This adjusts the specific voltage of the battery cells in the battery pack in order to balance the energy levels and overcome the capacity deterioration rate that may cause a mismatched effect within the battery cells. Regular implementation of balancing battery cells helps maximize the battery capacity and life.
- In addition, this function can also be used to create unbalanced voltage conditions for various battery cells in order to perform voltage unbalance related tests (such as UL2271)
- Capacity test: This test confirms the capacity of each battery cell. The difference in capacity of each battery cell in the same battery pack should not be very great as a large capacity gap may seriously affect the overall efficiency of battery pack.
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