Battery Manufacturing EquipmentKejing eight-channel temperature-controlled pouch expansion test system
The Kejing MSK-TIBE-TPPM8-6A7580 measures force and pressure on eight pouch cells while they cycle. It combines eight fixtures, a 300 L temperature chamber running 10–100°C and an integrated BlueLand eight-channel cycler rated 5 V and 6 A. The cycler is a bought-in BlueLand unit. It suits labs studying cell swelling during charge and discharge.
By Shenzhen Kejing Star Technology Company · MSK-TIBE-TPPM8-6A7580
Cell size, chamber and force sensors
Kejing lists pouch cells up to 80×75×12 mm, eight channels and a nominal 300 L chamber working at 10–100°C. The force and pressure unit runs on 24 VDC, samples at 20–200 Hz and quotes repeatability of 0.1–0.05% full-scale, with a maximum of 100 MPa at ±0.1% full-scale. Read these against the sensor range you receive, its calibration and the contact area of the plates.
The channels measure force; a pressure value depends on the contact area, and cell thickness or displacement needs a separate sensor. The chamber setpoint gives air temperature, so ask how each cell's own temperature is measured. Kejing describes constant-pressure operation with simultaneous measurement; ask the supplier to explain how the cells are held and how pressure is controlled.
| Parameter | Published value | Record status |
|---|---|---|
| Measurement channels | 8 channels | known |
| Listed chamber-temperature range | 10–100 °C | known |
| Listed force/pressure sampling range | 20–200 Hz | known |
Catalogue values apply to the configuration and test method the maker states. Ask for the values that apply to your configuration.
Preload and timing shape the comparison
Send the cell geometry, the contact plates, the constraint and preload you plan, and the question your test should answer. Decide whether the report gives measured force, pressure calculated from area, or another value. Agree how zero is set, how plate parallelism is checked and how the fixture's own thermal movement is handled.
Watch a run on representative cells with current, voltage, force and temperature logged together. Ask how timestamps and triggers are shared and how data is exported; force can sample at 200 Hz while the cycler and temperature logs run at their own rates and clocks. Record the preload and fixture setup per channel, so a difference between cells can be traced to the cell and ruled out as a contact effect.
The built-in cycler and services
Kejing lists the BlueLand cycler at 10 mV–5 V for charge, 1–5 V for discharge, 6 A and 30 W per channel, with current accuracy of 0.05% full-scale. Confirm these limits apply in the complete system you buy. The operation video linked from the catalogue shows a 3 A version, so put the 6 A model in the contract.
The chamber measures about 660×710×1690 mm, the system weighs 350 kg and it runs on AC220 V at about 1.5 kW. Handover should list who is responsible for each component, thermal, sensor and cycler checks, data export access and the maker's cell safety measures. Kejing publishes no expansion accuracy, displacement capability or finished-cell results.
Expansion is largest during the first charge, which the formation and capacity grading page explains, and the FAT and SAT page deals with how to verify force readings.
Questions that change the purchase
| Decision | What the catalogue says | Next step |
|---|---|---|
| What quantity is actually measured? | The catalogue lists force sensing with a 100 MPa pressure figure and no contact area. | Sign off units, calibration, preload and fixture geometry. |
| Are the three data streams in step? | The catalogue gives 20–200 Hz force sampling only. | Watch an aligned export of electrical, force and temperature data. |
| Which cycler version is delivered? | The catalogue lists a 6 A BlueLand unit; the linked video shows 3 A. | Name the cycler version and who services it in the supply scope. |
Prepare the supplier conversation
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Sources and check dates
The maker's own pages and public records used for this page, each with the date it was checked.
s1 · Kejing eight-channel temperature-controlled pouch expansion test system original specification
Shenzhen Kejing · Manufacturer-origin source
Kejing's specification for the expansion tester, with cell size, chamber range, sensor figures, cycler limits and services.
Archived source check: 2026-10-11
s2 · Official current equipment catalogue
Shenzhen Kejing · Manufacturer-origin source
Kejing's current catalogue listing its cell testing and measurement systems.
Archived source check: 2026-10-11
Still to confirm
- Sensor range, calibration and plate contact area for your fixture.
- How force, cycler and temperature data are time-aligned and exported.
- Whether a thickness or displacement sensor can be added.
- That the delivered cycler is the 6 A BlueLand model.
In-situ pouch-cell force and swelling tests under controlled temperature
- Pouch geometry, plates, preload and constraint
- Sensor range, units, contact area and calibration
- Force or pressure versus displacement needs
- Time alignment of current, voltage, force and temperature
- 6 A BlueLand cycler and raw data exports
- Per-channel thermal checks, services and cell safety