High-rate Battery TesterPFX2731S
Supports single-cell evaluation for all-solid-state batteries, lithium-ion batteries, etc.
Features
Enables high-rate charge/discharge tests necessary for enhanced rapid charge/discharge performance.
The PFX2731S is a 6 V-20 A 6-channel battery tester that supports high-rate charge/discharge
tests. It is operated with the application software BPChecker4000, which is exclusive
to the PFX2731S. As one PC can operate up to 4 units (24 channels), one can construct
a multi-channel charge/discharge system according to the required number of channels.
In order to safely conduct long-term continuous testing, it also has 2-system independent
protection functions for hardware and software, as well as various protection functions
such as a connection confirmation function that detects incorrect wiring and integrated
capacity protection.
- 10 ms continuous measurement (at the fastest setting)
- Supports single-cell evaluation (can be set with C-rate)
- Various charge/discharge modes (9 modes in total)
- Charge: CC, CC-CV, CP, CP-CV
- Discharge: CC, CC-CV, CP, CP-CV
- Pattern charge/discharge (CC(+CV), CP(+CV))
- When an error is found, a built-in path switch immediately terminates the test
- Four constant temperature chambers (produced by Espec) can be operated synchronously
- A T-type thermocouple (optional) can be used to measure temperature
- Simply connecting a LAN cable enables system construction
- Enhanced Protection Functions
System Configuration
Example of PFX2731S x 1 unit connected with LAN cable
The PFX2731S combines a control unit, a measurement unit, and a 6-channel 6 V-20 A charge/discharge unit into a single housing, allowing the creation of a compact charge/discharge system with up to 24 channels. Continuous data recording of 10 ms is possible for all channels due to the complete isolation and independent measurement functions of each channel.
Example of PFX2731S x 4 units and constant temperature chamber x 4 units
connected via LAN cable
*Either LAN or RS485 is used for the connection to the temperature chamber.A separate USB converter is needed for connection to a PC when using the RS485.The Charge-Discharge mode for the diverse applications
CC Charge
It is only for constant current charging. It supports -dV detection, and -dT/dt detection by battery temperature.
CC Discharge
It is a general constant current discharge. Termination by capacity (Ah) is another option in addition to voltage and battery temperature.
CC-CV Charge
This charge method switches from constant current to constant voltage automatically. It supports CV time and It current detection.
CC-CV Discharge
This discharge method switches from constant current to constant voltage automatically.
It supports CV time and It current detection. Since it is capable of a deeper discharge than
the CC discharge profile, it can be used for high-precision discharge capacity measurement.
CP Charge
New FeaturesIt is only for constant power charging. The charging current may be limited by the limit current if the voltage is low. Termination by capacity (Ah) is another option in addition to voltage and battery temperature.
CP Discharge
It is only for constant power recharging. The limit current can be used to limit the discharge
current if the voltage drops and the discharge current increases. Termination by capacity (Ah)
is another option in addition to voltage and battery temperature.
CP-CV Charge
New FeaturesThis charge method switches from constant power to constant voltage automatically. It supports CV time and It current detection.
Pattern Charge/Discharge (CC(+CV), CP(+CV))
New FeaturesA pattern is a series of steps. A maximum of 100,000 steps of CC or CP charge/discharge can be switched at high speed. More advanced pattern control is supported because the CV voltage can be adjusted for each step. Even if there are many steps, like in a standard test’s pattern charge/discharge and simulation pattern, Excel can be used to input the data.
100,000-step pattern charge/discharge function
The CC/CP step value can be set up to 100,000 steps. The time width can be set from 100 ms to 999.9 s per step. Furthermore, because the CV voltage can be set for each step, it is possible to handle complex charge/discharge tests with flexibility, including test patterns for a variety of standard tests and simulation patterns.
High-speed Data Sampling
The measurement of voltage and current is performed using a 24 bit A/D converter. Continuous data collection of 10ms is possible for all channels. (The data recording time can be selected between 10
ms, 100 ms, and 1 s.) Setting the delta voltage and delta current also makes it possible to collect data even when the voltage or current exceeds the set value.
*Specifying a short time setting increases the amount of recorded data. The amount of data will be in the thousands to tens of thousands if the test time is long (several hours or longer). Be sure to set it carefully.
Enhanced Protection Functions
Protection functions like overcharge and overdischarge are built into the hardware and software. Additionally, the main unit has a built in path switch and a high-speed shutdown function that instantly terminates the test when an abnormality is detected. Main items and setting ranges of protection settings
The C-rate setting function makes changing complex test conditions simple
To accommodate the diversifying requirements of charge/discharge tests, the C-rate setting function has been implemented. The charge/discharge current value of the profile can be set with the C-rate value based on the nominal capacity input value. As a result, the test conditions
can be applied to all profiles by simply changing the nominal capacity input value when testing different battery types with the same C-rate conditions and test pattern.
Test Condition Editor
Enables high-precision measurement
Battery voltage and charge/discharge current are accurately detected by a built-in high-precision measurement circuit. (Voltage measurement: 100 μV resolution, current measurement: 100 μA resolution) (Current measurement: 100 μA resolution at 20A range, 10μA resolution at 2A range)
Resuming a test from any point
It is possible to resume the test from any point if it is interrupted due to a power outage, an alarm going off, or user action. Profile specification
Fully Independent Operation for All Channels
Since each channel is fully independent, it can be controlled using various timings and test conditions.
Easy Firmware Update
Downloading the firmware updater from our website will allow the PFX2731S’s firmware to be updated to the most recent version.
Conditions for Various Charge/Discharge Cutoffs
In addition to voltage, time and temperature, It current value and SOC can also be used to set the charge termination condition and discharge termination condition.
SD035-PFX BPChecker4000
The BPChecker4000 allows the conditions for battery charge/discharge characteristic tests to be set, tests to be carried out, and the test results to be stored. BPChecker4000 consists of two programs, the Test Condition Editor and the Test Executive, which create and run tests respectively.
The Charge-Discharge mode for the diverse applications
Specifications
Rated output
| Item | Specifications | |
|---|---|---|
| Number of outputs | 6 ch (per frame) | |
| Isolation | Between channels, Ch-chassis | |
| Charge current range | 2A range | 0.0000 A to 2.0000 A |
| 20A range | 0.000 A to 20.000 A | |
| Charge voltage range | -1.000 V to 6.000 V | |
| Discharge current range | 2A range | 0.0000 A to 2.0000 A |
| 20A range | 0.000 A to 20.000 A | |
| Discharge voltage range | -1.000 V to 6.000 V | |
* DUT cable: 5.5 mm2 in diameter, 5 min length
Accuracy of setting
Static
| Item | Specifications | ||
|---|---|---|---|
| Constant current charge/discharge | 2A range | Range | 0.0000 A to 2.0000 A |
| Accuracy *1 | ±（0.15% of setting + 1.0 mA） | ||
| Resolution | 0.1mA | ||
| 20A range | Range | 0.000 A to 20.000 A | |
| Accuracy *1 | ±（0.15% of setting + 10.0 mA） | ||
| Resolution | 1mA | ||
| Constant voltage charge/discharge | Range | -1.000 V to 6.000 V | |
| Accuracy *1 | ±（0.05% of setting + 1.2 mV） | ||
| Resolution | 1mV | ||
| Constant power charge/ discharge *2 | 2A range | Range | -0.100 W to 12.000 W |
| Accuracy *1 *3 | ±（0.5% of setting + 0.01 W） | ||
| Resolution | 1mW | ||
| 20A range | Range | 0.10 W to 120.00 W | |
| Accuracy *1 *3 | ±（0.5% of setting + 0.1 W） | ||
| Resolution | 10 mW | ||
Pattern
| Item | Specifications | ||
|---|---|---|---|
| Constant current pattern | 2A range | Range | -2.0000 A to 2.0000 A (negative values are discharge currents) |
| Accuracy *1 | ±（0.15% of setting + 1.0 mA） | ||
| Resolution | 0.1mA | ||
| 20A range | Range | -20.000 A to 20.000 A | |
| Accuracy *1 | ±（0.15% of setting + 10.0 mA） | ||
| Resolution | 1mA | ||
| Number of settings | 100000step (maximum number of steps) | ||
| Range | 100 ms to 999.9 s (the time width per step) | ||
| Resolution | 100ms | ||
| Switching time *4 | 100 ms max. | ||
| Constant power pattern *2 | 2A range | Range | -12.000 W to 12.000 W (negative values are discharge power) |
| Accuracy *1 *3 | ±（0.5% of setting + 0.01W） | ||
| Resolution | 1mW | ||
| 20A range | Range | -120.00 W to 120.00 W | |
| Accuracy *1 *3 | ±（0.5% of setting + 0.1W） | ||
| Resolution | 10mW | ||
| Number of settings | 100000step (maximum number of steps) | ||
| Range | 100 ms to 999.9 s (the time width per step) | ||
| Resolution | 100ms | ||
| Switching time *4 | 100 ms max. | ||
*1 Ambient temperature range: 18 °C to 28 °C *2 The battery voltage is measured, and the control current (constant current control) is calculated from the set power value through software calculation. *3 Battery voltage range: 1 V to 6 V or higher *4 Maximum time required for switching: charge -> discharge, discharge -> charge
Measurement accuracy
| Specifications | |||
|---|---|---|---|
| Static/ Pattern | |||
| Charge/ discharge Current measurement | Range | 2A range | -2.00000 A to 2.00000 A |
| 20A range | -20.0000 A to 20.0000 A | ||
| Accuracy *1 | 2A range | ±（0.15% of reading + 1.0 mA） | |
| 20A range | ±（0.15% of reading + 10.0 mA） | ||
| Resolution | 2A range | 0.01mA | |
| 20A range | 0.1mA | ||
| Voltage measurement | Range | -2.0000 V to 7.0000 V | |
| Accuracy *1 | ±（0.05% of reading + 1.2 mV） | ||
| Resolution | 0.1mV | ||
| Input resistance | 10GΩ (voltage range: -2 V to 7 V) | ||
| Power measurement | Range | 2A range | -12.000 W to 12.000 W |
| 20A range | -120.00 W to 120.00 W | ||
| Accuracy | Software calculation (voltage measurement × current measurement) | ||
| Resolution | 2A range | 1mW | |
| 20A range | 10mW | ||
| Capacity measurement | Range *2 | -100.0000 Ah to 100.0000 Ah | |
| Accuracy | Software calculation (voltage measurement × current measurement) | ||
| Resolution *2 | 0.1mAh | ||
| Time *3 | Accuracy *1 *4 | ±10ppm（TYP） | |
*1 At an ambient temperature between 18 °C and 28 °C. *2 The same for the 2 A range and 20 A range. *3 Accuracy of signal source used for elapsed time in charge/discharge *4 Monthly error: approximately 30 seconds
Temperature measurement
| Thermocouple voltage (temperature) measurement block | Specifications |
|---|---|
| Number of measured terminals | Per channel |
| Thermocouple type | Type T |
| Range | -100.0 °C to 400.0 °C *1 |
| Accuracy *2 *3 | ±1.5℃（TYP） |
| Reference junction compensation *2 *4 | ±0.7℃（TYP） |
| Resolution | 0.1℃ |
| Measurement interval | 2s |
*1 The accuracy of the thermocouple is not guaranteed when it is used outside the operating range. The range depends on the thermocouple specifications (thermocouple class, wire diameter, and insulation). *2 At an ambient temperature between 18 °C and 28 °C. *3 When the voltage that the thermocouple calibrator produces is measured (the thermocouple tolerance is not included). *4 Indicates the performance of a thermometer at a reference junction (cold junction).
Charge/discharge end condition list
| Charge/discharge mode | End condition | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum voltage | Minimum voltage | Specified time after charge/ discharge start | Specified time after starting constant voltage operation | Specified current after starting constant voltage operation | Specified time after current falls below It Current | -dV (masking time can be set) | dT/dt (°C/min) | Integrated current (Ah) | Integrated power (Wh) | Maximum SOC | Minimum SOC | Time since pattern charge/ discharge start | Number of loops | Battery temperature | |
| Constant current charge (CC) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||
| Constant current-constant voltage charge (CC-CV) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||
| Constant power charge(CP) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||||
| Constant power-constant voltage charge (CP-CV) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||
| Constant current discharge (CC) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||||
| Constant current-constant voltage discharge (CC-CV) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||
| Constant power charge(CP) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||||
| Constant power-constant voltage discharge (CP-CV) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||
| Pattern constant current charge/discharge (Pattern) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||||||
Protection functions
Overvoltage (overcharge) protection
| Item | Specifications | |||
|---|---|---|---|---|
| Overvoltage (overcharge) protection | ||||
| Software OVP | Operating range | 0.000 V to 6.300 V | ||
| Resolution | 1mV | |||
| Setting accuracy *1 | Depends on the voltmeter accuracy | |||
| Operating time | 50 ms max. | |||
| Hardware OVP *2 | Operating range | 0.0 V to 6.6 V | ||
| Resolution | 100mV | |||
| Setting error *1 | ±0.5% of rating | |||
| Operating time | 10 ms (TYP) From overvoltage detection to output shutoff. | |||
Undervoltage (overdischarge) protection
| Item | Specifications | |||
|---|---|---|---|---|
| Software UVP | Operating range | -1.100 V to 5.700 V | ||
| Resolution | 1mV | |||
| Setting accuracy *1 | Depends on the voltmeter accuracy | |||
| Operating time | 50 ms max. | |||
| Hardware UVP *2 | Operating range | -1.1 V to 6.0 V | ||
| Resolution | 100mV | |||
| Setting error *1 | ±0.5% of rating | |||
| Operating time | 10 ms(TYP) From undervoltage detection to output shutoff. | |||
Overcurrent protection
| Item | Specifications | |||
|---|---|---|---|---|
| Software OCP | Operating range | Charge | 2A range | 0.000 A to 2.100 A |
| 20A range | 0.000 A to 21.000 A | |||
| Discharge | 2A range | 0.000 A to 2.100 A | ||
| 20A range | 0.000 A to 21.000 A | |||
| Resolution*3 | 1mA | |||
| Setting accuracy *1 | Depends on the ammeter accuracy | |||
| Operating time | 50 ms max. | |||
| Delay time | 0 ms min. Detection delay timer setting | |||
| Hardware OCP *2 | Operating range | Charge/ discharge | 2A range | 0.0 A to 2.2 A |
| 20A range | 0.0 A to 22.0 A | |||
| Resolution*3 | 100mA | |||
| Setting error *1 | ±0.5% of rating | |||
| Operating time | 10 ms(TYP) From overcurrent detection to output off. | |||
Overcharge/overdischarge capacity protection
| Item | Specifications | |||
|---|---|---|---|---|
| Software OAH *4 | Operating range | 1.0000 Ah to 2000.0000 Ah | ||
| Setting accuracy *1 | Depends on the ammeter accuracy and the main CPU clock accuracy | |||
| Resolution | 0.1mAh | |||
Temperature (overheat) protection
| Item | Specifications | |||
|---|---|---|---|---|
| Software OTP | Operating range | -100 °C to 400 °C | ||
| Setting accuracy *1 | Depends on the temperature measurement accuracy | |||
| Resolution | 1℃ | |||
*1 At an ambient temperature between 18 °C and 28 °C. *2 Set values are retained in the charging/discharging unit. The system always protects the DUT even when BPC4000 is executing no test. *3 The same for the 2 A range and 20 A range. *4 The application software calculates the value by multiplying the nominal capacity by the preset percentage and sets the capacity.
General specifications
| Item | Specifications | |
|---|---|---|
| Nominal input rating | 200 Vac to 240 Vac, 50 Hz / 60 Hz, single phase | |
| Input voltage range | 180 Vac to 250 Vac | |
| Maximum power consumption | 1870 VAmax. in 1 frame (6 ch) at rated charge | |
| Environmental conditions | Operating temperature | 0 °C to 40 °C |
| Humidity range | 20 %rh to 85 %rh (no condensation) | |
| Storage temperature | -10 °C to 60 °C | |
| Humidity range | 0 %rh to 90 %rh (no condensation) | |
| Operating environment | Indoors, overvoltage category II | |
| Altitude | Up to 2000 m | |
| Isolation voltage | Between I/O terminals and chassis | Maximum ±50 V |
| Insulation resistance | Between primary and chassis | 500 Vdc, 30 MΩ or greater, 70 %rh humidity or less |
| Between primary and I/O terminals *1 | 500 Vdc, 30 MΩ or greater, 70 %rh humidity or less | |
| Between I/O terminals and chassis *1 | 50 Vdc, 30 MΩ or greater, 70 %rh humidity or less | |
| Withstanding voltage | Between primary and chassis | No abnormalities at 1500 Vac for 1 minute. |
| Between primary and I/O terminals *1 | No abnormalities at 1500 Vac for 1 minute. | |
| Outline drawing | 430(16.93)(MAX 440(17.32))W×173(6.81)H× 620(24.41)MAX 695(27.36)D mm(inch) | |
| Weight | Approx. 34 kg (75 lbs) | |
| Accessories | Power cord × 1, Rear panel cover set × 1, Temperature measurement boxes × 6, Temperature measurement cables × 6,TRIP connector × 1, Signal I/O connector × 1, LAN cable × 1, Heavy object warning label × 1, Operation Manual(Japanese and English,one each) × 1, Safety Information × 1, China RoHs sheet × 1 *Cable set is not included. Please purchase the optional cable set together with the main unit. | |
| Electromagnetic compatibility *2 *3 | Complies with the requirements of the following directive and standard. EMC Directive 2014/30/EU EN 61326-1 （Class A*4） EN 55011 （Class A*4、Group 1*5） EN 61000-3-2 EN 61000-3-3 Applicable under the following conditions: The maximum length of all cabling and wiring connected to this product is less than 5 m. | |
| Safety | Complies with the requirements of the following directive and standard. Low Voltage Directive 2014/35/EU *3 EN 61010-1 (Class I *6 , Pollution Degree 2 *7) EN IEC 61010-2-030 | |
*1 The input/output terminals refer to charging and discharging terminals connected to the DUT, voltage sensing terminal, and external signal input/output. *2 Does not apply to specially ordered or modified products. *3 Only for products with CE marking / UKCA marking on their body. *4 This is a Class A instrument. This product is intended for use in an industrial environment. This product may cause interference if used in residential areas. Such use must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts. *5 This product belongs to Group 1 products. This product does not generate and/or use intentionally radio-frequency energy, in the form of electromagnetic radiation, inductive and/or capacitive coupling, for the treatment of material or inspection/analysis purpose. *6 This is a Class I instrument. Be sure to ground this product’s protective conductor terminal. The safety of this product is guaranteed only when the product is properly grounded. *7 Pollution is addition of foreign matter (solid, liquid or gaseous) that may produce a reduction of dielectric strength or surface resistivity. Pollution Degree 2 assumes that only non-conductive pollution will occur except for an occasional temporary conductivity caused by condensation.
Unless specified otherwise, the specifications are for the following settings and conditions.
- The product is warmed up for at least 30 minutes.
The used terminology is as follows:
- TYP: These are typical values that are representative of situations where the product operates in an environment with an ambient temperature of 23 °C (73.4 °F). These values do not guarantee the performance of this product.
- setting: Indicates a set value.
- reading: Indicates a readout value.
- rating: Indicates a rated value.
- Static: General term to indicate CC charge, CC – CV charge, CC discharge, CC – CV discharge, CP discharge, and CP – CV discharge.
- Pattern: General term to indicate pattern charge/discharge.
C-rate entry is supported.
- Individual CC values, pattern charge/discharge step current, limit current, current capacity of end condition/It cutoff current can be set using a C-rate.
- C-rate calculation specifications The nominal capacity setting value is assumed to be 1C.
C-rate setting range: 0.001 to 99.999 (the range is common.)
The conversion result from a C-rate to a current/capacity value is rounded to the nearest con- trol resolution.
