BK-6808E/10/20/30 Lithium Battery Cylindrical Cell Cycle Tester

BK-6808E 5V10A 5V20A 5V30A Energy regenerate lithium battery cycle performance testing equipment

Ⅰ.Main performance of the device

1.Designed and manufactured for performance testing and cycle life testing of rechargeable batteries, especially for R&D. It is possible to detect a single type of lithium ion or a lithium polymer or the like.

2.Designed and manufactured in strict accordance with national testing standards, all electrical performance test items for rechargeable lithium-ion batteries in the standard can be tested.

3.The device has a total of 8 constant current sources. Each constant current source is completely independent and can be controlled independently. Each channel can detect different types and different specifications of batteries. Each charging and discharging process, charging and discharging current and constant voltage value are separated by computer. Programming settings.

4.With a variety of test modes, you can achieve constant power charging, constant power discharge and constant resistance discharge.

5.With AC internal resistance test function, it can detect the internal resistance change of the battery during the charging and discharging process in real time.

6.An optional temperature test module that detects changes in battery temperature during charging and discharging.

7.Optional external voltage test module for users to expand the pressure or thickness of the test battery.

8.Modular design and manufacture, long-term operation is reliable and stable, and easy to maintain.

9.The four-wire method is used to measure the wiring and contact errors to the maximum extent, and the test accuracy is high.

10.The automatic current feedback adjustment technology is used to overcome the non-linear factors of the current automatic setting, and the current setting accuracy is ensured in the full-scale range.

11.A 16-bit high-precision A/D converter with independent 16-bit D/A circuitry for high current and voltage sampling and regulation.

12.With data power-down protection.

13.The host computer can set up to 64 steps and 9999 cycles to display the cycle life curve.

14.Each set of upper computer can be connected to 1-16 sets of single chip microcomputer system.

1)Supporting software features.

2)Realize the functions of centralized measurement and control, data processing and report making of the equipment, and have various protection functions such as voltage abnormal protection and current abnormal protection.

3)Provide powerful processing data function, provide a variety of curve modes, such as voltage-time, current-time, internal resistance-time and its superposition curve, eigenvalue, cycle diagram, etc., provide flexible programming selection function, easy to use.

4)Data export function, which can lead the test data to Excel, Word, Access or text files;

Ⅱ.Equipment drawing:

Ⅲ.Main technical parameters:

Ⅳ.Energy-saving principle block diagram of equipment:

                                                           Schematic diagram of equipment principle

                                                   Schematic diagram of charge and discharge energy flow

When charging:

●Charging adopts switching constant current source, which has higher energy conversion efficiency than traditional linear constant current source;

●Energy flow direction: (power grid + energy generated by discharge equipment) → AC/DC two-way inverter power supply → constant current source module → battery

When discharging:

 ●Energy flow direction during discharge: battery→constant current source module→AC/DC two-way inverter power supply→battery→(discharging equipment + grid)

●When discharging, most of the energy will flow through the factory's AC bus to the charging equipment and other energy-consuming equipment (such as air conditioning, lighting, office equipment, etc.), and there is still excess energy that will be fed back to the grid.

Ⅴ. Screenshot of battery testing software interface and curve: