Length of battery core A

(mm)

Battery body width B

(mm)

Width of air bag along B direction

(mm)

Cell thickness

(mm)

20-155

20-105

No limited

2-12

No.

Main parts name

Model

Brand

Origin

1

Chassis

——

——

Self made

2

Fixture

——

——

Self made

3

Tray

——

——

Self made

4

Test power

5V5A128CH

Shengchuang

Outsourcing

5

Cylinder

Φ250*350

AirTAC

Outsourcing

6

Touch screen

——

Xinjie

Outsourcing

7

PLC

——

Xinjie

Outsourcing

8

Proportional valve

2050-32L

SMC

Outsourcing

Fixture

Each fixture is divided into 17 layers of heating plates, and there are heat insulation measures between the heating plates and the fixtures. Each layer of heating plate is equipped with a temperature probe. PLC can inspect the temperature probe of each layer of heating plate and display the temperature detection value on the touch screen.

PLC control

This equipment implements PLC control: the heating target temperature can be set, and the equipment controls the heating plate according to the target temperature, and protects and alarms in time when the heating plate is over-temperature.

Working temperature

Room temperature～90℃, temperature control accuracy of each layer of heating plate is ±3℃.

PLC controller accuracy

PLC can realize 5-stage pressurization control on the fixture, and the pressure control accuracy can reach ±30kg.

Testing method

The four-wire method is used to measure the current and voltage of the battery cell. The circuit connection between the fixture and the device is realized by a special PCB. The electrode plate is installed on the device. The battery is pressed by the upper and lower plates to achieve a fast and reliable connection between the device and the fixture circuit.

Safety

The doors and observation windows around the equipment have heat insulation measures. The equipment is equipped with security access control to ensure that the equipment is safer and more reliable.

Setting range of charging and discharging voltage

1.Setting range of charging voltage: 0mV～5000mV (resolution 1mV);

2.Setting range of discharge voltage: 2000mV～5000mV (resolution 1mV).

Setting range of charging and discharging current

0mA～5000mA (resolution 1mA)

Measurement control accuracy

1.Voltage measurement control accuracy: ±(0.1%FS+0.1%RD);

2.Current measurement control accuracy: ±(0.1%FS+0.1%RD);

3.Time measurement control accuracy: ±(0.1%FS+0.1%RD).

End conditions of charge and discharge

1.Constant current charging (CC): the end conditions are voltage, time and capacity;

2.Constant current and constant voltage charging (CC-CV): the end conditions are current, time and capacity;

3.Discharge method: The end condition of constant current discharge (DC) is voltage, time or capacity.

The main functions of the software

1.Control the end conditions of the process according to time, voltage, current and other parameters;

2.Calculate the charging capacity parameters of the formed battery;

3.Editing and management functions of charging and discharging process:

3.1 Up to 32 step parameters can be set;

3.2 Can set up to 256 cycles;

3.3 Each step can be selected by attributes such as constant current charging, constant current constant voltage charging, shelving, constant current discharging, and cycling;

3.4 The edited process file can be archived for future use.

4.The charging current can be set from (0～5000)mA, the charging voltage can be set from (0～5000)mV, the discharge voltage can be set from (2000～5000)mV, and the time of each step can be set from 1min to 1000min.

5.Software security control:

5.1 The running data and curve of each point can be automatically saved after the set step is run, and the software has the function of over-capacity alarm;

5.2 Overcharge protection: When the voltage exceeds the overcharge protection setting value, the flow of the channel is stopped, and the setting value can be set;

5.3 Capacity over-tolerance protection: When the capacity of the battery cell exceeds a certain range, the flow of the channel will be stopped;

6.The formed batteries can be sorted and equipped with indicator lights. The sorting method can be set as: capacity, time, open circuit voltage, average voltage, fixed-point voltage, etc.

7.The charge and discharge data of each battery can be formed into a data list form for users to view or print out.

8.The equipment supports barcode recognition function, and can realize the one-to-one correspondence between battery and channel and record production data.

System protection function

1.Over-current, under-current, over-voltage, under-voltage, and over-capacity protection: The upper and lower limits of battery voltage, current, and capacity can be preset in the process. When the limit conditions are reached, the system will automatically force the battery to sleep and set it in the software The interface prompts a fault.

2.Leakage current protection: If there is a leakage current greater than 200mA for more than three times in the working state, turn off the input power of the switching power supply.

3.Charging overvoltage protection: When the battery voltage is higher than the upper limit voltage when the battery voltage is higher than the upper limit voltage, the battery will stop charging when the system is inspecting the battery during battery charging.

4.Discharge under-voltage protection: When the battery is inspected by the system during battery discharge, when the battery voltage is lower than the lower limit voltage, the battery stops discharging.

5.Equipment power failure protection: When the equipment is abnormally powered off, the current process step can be continued;

6.Register function for abnormal channels;

The equipment is equipped with a three-color warning light (with sound and light), and the definition of the warning light status

1.Waiting (the process is finished)-yellow light;

2.The process is in progress (sleeping, charging, discharging)-Green light;

3.System failure (over temperature, hardware failure, etc.)-red light and sound.

The basic configuration of the whole system

1.The temperature rise of the drive board and the internal heat sink of the switching power supply on the equipment is ≤30℃, and the heat dissipation power of the heat sink should be designed according to the long-term full scale to ensure that the equipment can work stably for a long time.

2.The equipment calibration cycle is 3 months. Within 3 months after the equipment is calibrated, ensure that the voltage measurement and control accuracy of all channels is ≤±(0.1%FS+0.1%RD), and the current measurement and control accuracy is ≤±(0.1%FS+0.1%RD).

3.The heat dissipation method of the electrical part: fan exhaust cooling.

Equipment environmental requirements

1.Working environment temperature: 25±8℃;

2.Relative humidity: 30%～75%;

3.Equipment ventilation requirements: there should be no obstructions within 1.5 meters in front of and behind the equipment and 0.8 meters on the side of the equipment.

4.Installation location: indoor, clean workshop.

5.Computer configuration (provided by the buyer): Each computer manages 5 computers.