• CDPU series
  • CDPU series

CDPU series

High power battery cycle tester

  • Max Voltage: 5V to 60V
  • Max Current: 5A to 250A
  • Max Power: 25W to 1250W
  • Supports 0V input

Three major functions for simplifying the single cell evaluation for large rechargeable battery are mounted.

CDPU series is a DC battery cycle tester that enables 25 W to 1250 W large capacity charge and discharge by one unit.
Liquid crystal 5-digit meter that enables correct setting and reading of I/O voltage and current values, dedicated software* that collectively controls charge-discharge operation and various measurements, and battery temperature detection function by thermistor can simplify the single cell evaluation test for large rechargeable battery for HEV, PHV, EV, and PEV whose demand is especially growing in recent years.
Even if multiple cells are connected in series, the data of charge and discharge to/from each cell, voltage, current, and temperature data for each cell can be obtained (up to 250 V).
This series is optimum for charge-discharge evaluation test for various rechargeable batteries such as lithium-ion battery, fuel battery, nickel hydride battery, and lead battery, and electric double layer capacitor.

* Up to two channels are supported. The software that supports more channels is also available. For details, contact the sales representative.

Features

  • Up to 1250W large capacity charge and discharge are enabled by only one unit.
  • Charge-discharge tests for various batteries are widely supported.
  • High-resolution D/A and A/D converters are mounted.
  • Regularly equipped with digital interface
  • Low noise switching system is optimum for research and development.
  • Use in various combinations such as multiply connection and master/slave is available.

Models

Model Voltage [V] Current [A] Power [W] AC Input
Input Voltage Input Current (typ.)
CDPU5-5* 0 to 5 0 to 5 25 115 V ±10%
50/60 Hz
single phase
1.3
CDPU5-40 0 to 40 200 6.1
CDPU5-50 0 to 50 250 7
CDPU5-100 0 to 100 500 230 V ±10%
50/60 Hz
single phase
7
CDPU5-200 0 to 200 1000 8.7
CDPU5-250 0 to 250 1250 17.4
CDPU20-30 0 to 20 0 to 30 600 7
CDPU30-40 0 to 30 0 to 40 1200 11.3
CDPU60-20 0 to 60 0 to 20 1200 11.3

*On sale soon.

Functions

Three charge modes

Constant current/constant voltage (CC/CV) charge

By setting both of current value and voltage value, the output exceeding the value you set can be disabled.

Constant current/constant voltage (CC/CV) charge

Constant current (CC) charge

The charge is carried out at the current value you set. Even if the terminal voltage changes during charge, constant current can be passed.

Constant current (CC) charge

Constant voltage (CV) charge

The charge is carried out at the voltage value you set. Even if the charge current changes, constant voltage can be applied.

Constant voltage (CV) charge

Charge completion condition setting

Setting of time

The time can be set up to 999 hours 59 minutes 59 seconds by one second unit. If the time reaches the setting time, the charge is completed.

Setting of voltage

Set the voltage value to complete the charge. If the terminal voltage of battery reaches the setting value, the charge is completed (only at constant current charge).

Setting of current

Set the current to complete the charge. If the current that is passed to battery reaches the setting value, the charge is completed (only at constant voltage charge).

Setting of-ΔV

For some batteries, the voltage increases when the charge is completed, and then the voltage decreases to complete the charge. The voltage reduction value at that time is measured and the charge is completed if the voltage decreases by -ΔV you set.

Setting of temperature Coming soon

When the external temperature, the discharge is completed. (External temperature protection is disabled when this setting is made.)

Three discharge modes

Constant current (CC) discharge

The discharge is carried out at the current value you set. Even if the terminal voltage changes during discharge, constant current can be passed.

Constant current (CC) discharge

Constant power (CP) discharge

The discharge is carried out at the power value you set. If the terminal voltage changes during discharge, constant power can be consumed according to the change.

Constant power (CP) discharge

Constant resistance (CR) discharge

The discharge is carried out at the resistance value you set. The value of terminal voltage is measured and the current value for discharge is decided according to the setting value.

Constant resistance (CR) discharge

Discharge completion condition setting

Setting of time

The time can be set up to 999 hours 59 minutes 59 seconds by one second unit. If the time reaches the setting time, the discharge is completed.

Setting of voltage

Set the voltage value to complete the discharge. If the terminal voltage of battery reaches the setting value, the discharge is completed.

Setting of temperature Coming soon

When the external temperature, the discharge is completed. (External temperature protection is disabled when this setting is made.)

Battery temperature detection function

The temperature of a battery is measured by thermistor.
If the temperature becomes abnormal, charge and discharge are stopped in an urgent manner to protect the battery.

Battery temperature detection function

Digital control function

Control function Output ON/OFF setting
Various status displays Output status/operation status/OVP/OCP/UVP/OPP
Digital control for up to 16 units
Collective control when multiple units are connected
Writting function I/O voltage setting/ I/O current setting Percentage mode (100.00%)
Voltage/current value mode (maximum rated voltage/current value)
OVP setting/OCP setting/UVP setting Percentage mode (100.00%)
Voltage/current value mode (maximum overvoltage/overcurrent/low voltage protection value)
OPP setting Voltage/current value mode (maximum overpower protection value)
Constant power setting/constant resistance setting Power value mode (maximum rated power value)
Resistance value mode
Reading function I/O voltage measurement/ I/O current measurement Percentage mode (100.00%)
Voltage/current value mode (maximum rated voltage/current value)
I/O voltage setting value / I/O current setting value Percentage mode (100.00%)
Voltage/current value mode (maximum rated voltage/current value)
OVP setting/OCP setting/UVP setting Percentage mode (100.00%)
Voltage/current value mode (maximum overvoltage/overcurrent/low voltage protection value)
OPP setting Voltage/current value mode
(maximum overpower protection value)
Constant power measurement/constant resistance Power value mode (maximum rated power value)
Resistance value mode
Constant power setting value/constant resistance setting Power value mode (maximum rated power value)
Resistance value mode
External temperature measurement Temperature value mode

* The minimum value of each model is same as minimum display digit of the meter display on the front panel

Various protection functions

To protect your connected devices and this machine for charge-discharge test, various protection functions are prepared.

OVP (overvoltage protection), OCP (overcurrent protection), UVP (low voltage protection), OPP (overpower protection), OBP (external temperature protection)

Specifications

For details, download the datasheet below.

Options

-LGmb: digital interface board *

  • -Lgmb: digital interface + communication cable 2 m length
  • -Lgmb(Mc0.5): digital interface + communication cable 50 cm length

Able to one control master/slave operation in addition to digital control by USB/LAN/RS-232C/RS-485/GPIB

example to connect

Master/slave control

Master/slave

It is used when connecting independent rechargeable batteries to each CDPU and performing the same control. However, current increase by parallel connection is not possible.

How to Order

When ordering, suffix the above option number to the model number.
Example:
CDPU5-250-LGmb
* If this option is selected, a standard digital interface is not included with the product.

Dimensions

For details, download the datasheet below.

Cables

AC Input Cable

CABLE TYPE 1

125 V/10 A (regularly included)

CDPU5-5 (on sale soon)

  • CABLE TYPE 1
  • CABLE TYPE 1
CABLE TYPE 5

125 V/25 A (regularly included)

Models other than CDPU5-5

  • CABLE TYPE 5
  • CABLE TYPE 5

Accessories

  • 3-core input AC cable 2.5 m length for single phase (1)
  • Instruction manual (1)
  • Thermistor (1)
  • Remote control software "CD-BC evaluation version" CD for install (1)

Software

Software for remote control "CD-BC" (Attachment)*

CD-BC is dedicated software for remote-controlling our company's battery cycle tester. It realizes ideal power supply control when you carry out charge-discharge test for various secondary batteries such as lithium-ion battery. It enables setting of test conditions, execution of test, confirmation of test status, and display and save of test result.

* Standard equipment is only controlling one channel version. If you want to control multiple channels, you need to purchase the CD-BC-512 ch.

CD-BC screenshot

Features

  • The charge-discharge test (creation of test condition to execution to check) can be executed by dedicated software only.
  • Possible to execute the charge-discharge test by using the battery cycle tester made our company of maximum 512 units.
  • Possible to check the datalog during the test.
  • Possible to execute the charge-discharge test linked with Espec's thermostatic chamber.
  • Charge-discharge tests for various batteries: lead-acid, nickel-cadmium (NiCd), nickel-metal hydride (NiMH), lithium-ion (Li-ion), and lithiun ion polymer (Li-ion polymer), are supported.

Example of use

[Repetitive charge/discharge test of lithium ion battery]
Test condition
Battery specification Rated capacity 2.4 Ah
Nominal voltage 3.7 V
About 200 times charged/discharged
Charge Mode CC-CV charging
Charging current 2.0 A
CV voltage 4.2 V
Discharge Mode CC discharge
Discharging current 2.0 A
End voltage 2.8 V
Average temperature 20 °C
graph

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