XW-5V3A512CH Cell Grading Machine for 18650/21700/26650/32700 Cylindrical Battery
Model: XW-5V3A512CH
Max votage: 5V
Max current: 3A
Channels: 512
Cell: 18650/21700/26650/32700
Usage: for cylindrcial cell charge and discharge capacity grading
Type: Normal
Certification: CE
MOQ: 1 pcs
Leading time: 10-15 days
Warranty: 1 year
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.
| Equipment structure | |
| Number of equipment channels | 512 channels |
| Size | 1430Lmm x W500mm x 1840Hmm |
| Fixture form | four-wire method fixture |
| Fixture distance | 35mm |
| Support battery height | 10-100mm |
| Working power | 3-phase five-wire AC380V±10% 50HZ |
| Working power | ≤22KW |
| Working environment | temperature 0 ~ 40 °C, relative humidity≤80% |
| Cooling method | natural air intake, upward exhaust |
| Channel parameters | |
| Voltage measurement range | 0-5V,resolution 1mV |
| 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) |
| Current range | charge 30mA -3A; discharge 30mA -3A, resolution 1mA |
| Current accuracy | ±(1 ‰ reading + 1 ‰ full scale) |
| Type | Normal version or Energy regenerative, save energy version (optional) |
| Software functions | |
| Control mode | software installed computer connected equipment work, wholecabinet control |
| Communication method | RS485, baud rate 57600 |
| Process setting | up to 32 steps and 256 cycles can be set |
| Charging mode | constant current, 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 breakpoint recovery |
| Time range | arbitrarily set within 0-30000 minutes, time unit is min |
| Time accuracy | ≤±1 ‰ |
| Sampling inspection cycle | ≤8s |
| Minimum data recording frequency | ≤8s |
| Battery sorting | sort by (capacity, time, open circuit voltage, discharge platform, etc.) |
| Data processing | can record voltage, current, time, capacity and other data, automatically calculate constant currentcharge ratio, capacity loss, discharge eficiency, average voltage, median voltage and other data, provide data graphsand cycle diagrams; can generate generated text, EXCEL, WORD or MDB database format file |