1 EUP Directive specific requirements for battery chargers.
EUP Framework Directive introduced after the EU has issued a specific directive of 14 energy-saving products, "the external power supply and battery charger instruction" is one of the specific product instructions. The directive in July 2008 into the implementation phase. Directive applies to electrical and electronic products supply, the output power in 0.3-150W, single output AC voltage - DC, AC - AC external power converters and battery chargers. For example: power adapter, cell phone battery chargers, household appliances,glue gun battery charger, power tools, IT products, chargers and battery charger. The directive requires the EU market of no-load power consumption of battery charger:
≤ 0.3W (output power ≤ 60W)
≤ 0.5W (60W <Output Power ≤ 150W)
No-load power consumption is the main consideration in the charger when not connected to the load power consumption to a minimum. Instruction also simple arithmetic average of the efficiency of the battery charger (rated voltage equal to the output voltage is 25%, 50%, 75% and 100% of the efficiency of the arithmetic mean) made a request:
≥ 0.49 × nominal output power (output power ≤ 1W).
≥ [0.09 × glue stick Ln (Nameplate Output)] W +0.49 W (1W <output power ≤ 49W, Ln is natural logarithm.)
≥ 0.84W (49W <Output Power ≤ 150W).
Simple arithmetic average of the efficiency of the main factors to consider voltage instability impact on energy consumption.
2 Ni-MH battery charging control.
Currently exports to the EU rechargeable batteries to use more environmentally friendly small appliances nickel hydrogen battery, nickel metal hydride rechargeable control in three ways: First, capacity control method through the battery capacity test to control the battery charging. The method is simple, accurate measurement, but the adaptation is not good, every time before they must ensure that the monitoring remaining battery capacity is zero, leading to practical is not strong; Second, Vmax control method that controls the maximum battery charging voltage. The method is little change in the use of ambient temperature, the use of Ni-MH battery charging curve of the battery possible "- △" point to set a threshold level before, but the battery prone to "less filling" phenomenon; third "- △" control method. The method is to use nickel-metal hydride battery is full after a clear sign: "- △", that the battery is full after a small voltage drop. It does not with the battery self-discharge performance, ambient temperature, battery capacity change, so the method is the most reliable and stable method, but currently this method is still to line switching control circuit components of high energy consumption or high consumption to the PWM control circuit based.
Small household appliances 3 charge status and impact of energy consumption.
As the domestic exports to the EU rechargeable small appliances, low prices, and domestic battery charger is not strong awareness of energy conservation, coupled with technical strength is weak, compared with the control chip behind the majority of the control chip itself greater power. Wenzhou rechargeable small appliances, for example, razors, barber scissors, plush trimmer, small massage equipment, chargers and other products epilator are covered by the Directive. 2008 Wenzhou Exit Inspection and Quarantine under the jurisdiction of 10 small businesses in 10 different types of home appliances small home appliances to test the charger, only one company's products qualified battery charger no-load power consumption, but the efficiency of the arithmetic mean far charger well short of the requirements of the directive. The main problem is: no-load power consumption is too large, nine failed the average no-load power charger around in 1W (> 0.8W). Battery charger at rated voltage 25% (part of the battery charger at rated voltage 50%) had stopped working. Charger design is unreasonable, resulting in energy consumption is far below the EU target instructions to the charger. If these products strictly in accordance with EU requirements will not be exported to the EU region, one in Wenzhou area of ??about 100 million U.S. dollars will be affected rechargeable exports of small household appliances, and small appliances in Wenzhou China's exports to the EU affects only a microcosm of similar products, we can see the battery charge rechargeable device directive on domestic exports of small household appliances will have a significant and profound influence, and the enterprises to actively take response measures.
4 responses.
First, the upstream machine manufacturers and charger enterprises to actively collaborate to develop low energy consumption, cheap new products to replace high energy consumption, low efficiency of the old product line should give the former a simple switching circuit using the new PWM control circuit and low power consumption chips; followed by the European Union recommended to fast charging battery technology to improve battery efficiency. Energy efficiency due to rapid charging to slow charging high; Finally, to enhance awareness of energy conservation, raising awareness of protecting the earth's resources and improve the capability of independent innovation, accelerate product upgrading, promoting sustainable development of foreign trade, must not be a negative response, to give up the EU market, United States and Japan also have corresponding laws and regulations into effect, as the world's attention on energy conservation, more and more countries will put forward higher requirements for energy charger.