Electric double-layer capacitors for use in hybrid electric vehicles. Test methods for electrical characteristics

BS EN 62576:2010 Electric double-layer capacitors for use in hybrid electric vehicles. Test methods for electrical characteristics

BS EN 62576 describes the methods for testing electrical characteristics of electric doublelayer capacitor cells (hereinafter referred to as capacitor) to be used for peak power assistance in hybrid electric vehicles.

Contents of BS EN 62576:

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Tests and measurement procedures

4.1 Capacitance, internal resistance, and maximum power density

4.1.1 Circuit for measurement

4.1.2 Test equipment

4.1.3 Measurement procedure

4.1.4 Measurement

4.1.5 Calculation method for capacitance

4.1.6 Calculation method for internal resistance

4.1.7 Calculation method for maximum power density

4.2 Voltage maintenance characteristics

4.2.1 Circuit for measurement

4.2.2 Test equipment

4.2.3 Measurement procedures

4.2.4 Measurement

4.2.5 Calculation of voltage maintenance rate

4.3 Energy efficiency

4.3.1 Circuit for test

4.3.2 Test equipment

4.3.3 Measurement procedures

4.3.4 Measurement

4.3.5 Calculation of energy efficiency

Annex A (informative) Endurance test (continuous application of rated voltage at high temperature)

Annex B (informative) Heat equilibrium time of capacitors

Annex C (informative) Charging/discharging efficiency and measurement current

Annex D (informative) Procedures for setting the measurement current of capacitor with uncertain nominal internal resistance

Bibliography