IEC 62657：2009《Electric double-layer capacitors for use in hybrid electric vehicles . Test methods for electrical characteristics》

项目名称

章节号

测试方法

Capacitance, internal resistance, and maximum power density

4.1

equipment specified in 4.1.2.

a) Pre-conditioning

Before measurement, the capacitors shall be fully discharged and then incubated for 2 h to 6 h under the reference temperature, set at 25 °C o 2 °C, as specified in 5.2 in IEC 60068- 1, or that specified by the related standards.

NOTE 1 The heat equilibrium time which provides a reference for the soaking time is described in Annex B.

b) Sample setting

Fit the sample capacitors with the test equipment.

c) Test equipment set-up

Unless specified otherwise by related standards, the test equipment shall be set-up in the following manner.

1) Set the constant current Ic for charging. At this current, the capacitors shall be able to charge with 95 % charging efficiency based on their nominal internal resistance RN.

The current value is calculated by Ic=UR/38RN.

NOTE 2 The general concept for 95 % charging or discharging efficiency is described in Annex C. When the rated value of internal resistance of a capacitor is uncertain, the current for the measurement can be set according to the advisable procedures described in Annex D.

2) Set the maximum voltage for constant current charging as the rated voltage UR.

3) Set the duration of constant voltage charging TCV to 300 s.

4) Set the constant current discharge value. This value shall allow for a 95 % discharging efficiency based on the capacitor.s nominal internal resistance RN , and is calculated by Id=UR/40RN.

5) Set the sampling interval to 100 ms or less, and set the test-equipment so as to measure the voltage drop characteristics up to 0,5 UR.

Voltage maintenance characteristics

4.2

The measurements shall be carried out in accordance with the following procedures using the test equipment specified in 4.2.2.

a) Pre-conditioning

Before measurement, the capacitors shall be fully discharged and then incubated for 2 h to 6 h under the reference temperature, set at 25 °C o 2 °C, as specified in 5.2 in IEC 60068-1, or that specified by the related standards.

NOTE 1 The heat equilibrium time which provides a reference for the soaking time is described in Annex B.

b) Sample setting

Fit the sample capacitors with the test equipment.

c) Test equipment set-up

Unless specified otherwise by related standards, the test equipment shall be set-up in the following manner.

1) Set the constant current value for charging. At this current, the capacitors shall be able to charge with 95 % charging efficiency based on their nominal internal resistance. The current value is calculated by Ic=UR/38RN.

NOTE 2 The general concept for 95 % charging or discharging efficiency is described in Annex C. When the rated value of internal resistance of a capacitor is uncertain, the current for the measurement can be set according to the advisable procedures described in Annex D.

2) Set the maximum voltage for constant current charging to the rated voltage UR.

3) Set the duration of constant voltage charging TCV1 to 300 s.

4) After specified charging duration, set the capacitor terminals open.

Energy efficiency

4.3

The measurements shall be carried out in accordance with the following procedures by using the test equipment specified in 4.3.2.

a) Pre-conditioning

Before measurement, the capacitors shall be fully discharged and then incubated for 2 h to 6 h under the reference temperature, set at 25 °C o 2 °C, as specified in 5.2 in IEC 60068- 1, or that specified by the related standards.

NOTE 1 The heat equilibrium time which provides a reference for the soaking time is in Annex B.

b) Sample setting

Fit the sample capacitors with the test equipment.

c) Test equipment set-up

Unless specified otherwise by related standards, the test equipment shall be set up as follows.

1) Set the constant current for charging from 0 V to 0,5 UR and from 0,5 UR to UR. At this current, the capacitors shall be able to charge with 95 % charging efficiency based on their nominal internal resistance RN. The current value is calculated by Ic=UR/38 RN.

NOTE 2 The general concept for 95 % charging or discharging efficiency is described in Annex C. When the rated value of internal resistance of a capacitor is uncertain, the current for the measurement can be set according to the advisable procedures described in Annex D.

2) Set the duration of constant voltage charging TCV11 at 0,5UR to 300 s, and TCV12 at UR to 10 s.

3) Set the constant current discharge value. This value shall allow for a 95 % discharging efficiency based on the capacitor.s nominal internal resistance RN and is calculated by Id=UR/40RN.

NOTE 3 The general concept for 95 % charging or discharging efficiency is described in Annex C. When the rated value of internal resistance of a capacitor is uncertain, the current for the measurement can be set according to the advisable procedures described in Annex D.

4) Discharging can be deemed complete when the voltage between the capacitor terminals reaches 0,5 UR.