Description

The Battery Grading Machine is mainly used for formation and capacity grading of cylindrical lithium ion batteries.
Formation is first small current charging of a newly built lithium ion battery, aimed at forming a passivation layer on the surface of the negative electrode, that is, the solid electrolyte boundary film (SEI film).
Capacity grading means test the capacity of the cell via charge and discharge process, and grading the cells according the capacity value. This is for balance the battery pack assembling.
Battery Grading Machine is mainly composed of computer system, control software, communication interface and battery detection cabinet. The battery detection cabinet is composed of a clamp and a board body for placing the clamp, a charging constant current and voltage source, a discharging constant current source, a storage control circuit, a current sampling circuit, a voltage sampling circuit, a main control CPU, a data memory, a single-chip microcomputer program and a control panel.

Features

Structure
Channels: 512 channels
Machine size: 1620mm×550mm×1840mm
Box color: Default beige (can be customized)
Clamp type: upper positive and lower negative, fixture (tip/flat/two pieces) optional
Clamp spacing: 40mm
Support battery height: adjustable within 100mm
Working power supply: 3-phase five-wire system AC380V±10%, 50HZ
Working power consumption: ≤9KW
Working environment: temperature 0～40℃, relative humidity ≤80%
Cooling method: natural air intake, upward exhaust air

Channel parameters
Voltage measurement range: 0～5V
Battery voltage range: charging 0～4.5V; discharging 4.5～2V
Constant voltage range: 2.5～4.5V
Voltage accuracy: ±(1‰ reading+1‰ full scale)
Voltage resolution: 1mV
Voltage stability: ≤1‰
Current range: charging 20mA～6A; discharging 20mA～6A
Current accuracy: ±(1‰ reading+1‰ full scale)
Current resolution: 1mA
Current stability: ≤1‰

Software function
Control mode: The software installed on computer connected to the machine via serial port, whole cabinet control
Communication mode: serial port, baud rate 57600
Process setting: up to 32 steps and 256 cycles can be set
Charging mode: constant current, constant voltage, constant current and constant voltage
Charging cut-off conditions: voltage, current, time, capacity
Discharge mode: constant current
Discharge cut-off conditions: voltage, time, capacity
Protection function: over voltage, under voltage, over current, under current, over capacity protection, power failure protection,
data break point recovery
Time range: arbitrarily set within 0～30000 minutes, the time unit is min
Time accuracy: ≤±1‰
Sampling inspection cycle: ≤8s
Minimum data recording frequency: ≤8s
Battery sorting: sorting according to (capacity, time, open circuit voltage, discharge platform, etc.)
Data processing: Record data such as voltage, current, time, capacity, etc., and automatically calculate the constant current
charging ratio, capacity loss, discharge efficiency, average electricity data such as voltage, median voltage, etc., provide data
curve graph and cycle graph; can output and generate text, EXCEL, WORD or MDB database format files

Fixtures

Parameters

Samples

Our project

India project
This project is localed in Inda, Gurgaon. The client was founded in 1994, have more than 400 staffs and 10000+ square factory.

They bought 2 full of battery pack assembly line from us, includes sorting machine, welding machine, sticking machine, charge and discharge machine…
We have sent 3 engineers to client site for machine installation and training in year of 2019. The training taked about one week. After the training, the client engineers are learned how to operation the machines in a smooth and high efficiency way. They made high-quality products by our machines.
We had a nice journey in India.

GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established in 2010 and officially established in June 2014. XWELL relies on South China University of Technology(SCUT), and the core team is composed of several doctors and masters from SCUT.

XWELL's main products are battery production line machines, such as spot welding machine, battery sorting machine, battery sticking machine, battery capacity grading machine, battery charge and discharge aging machine, battery general testing machine, and so on. The main application areas are new energy lithium batteries, automobiles and other industries, Especially in the fields of new energy, automotive wiring welding and other fields, XWELL has accumulated rich engineering experience and mastered a full set of core technologies, and can provide customers with a complete set of services from technology to equipment, helping customers to establish efficient and reliable production lines in the shortest time .