GB/T 35590-2017Information technology - General specification for portable digital equipments used power bank (English PDF)

Foreword

This document was issued on 29 December 2017 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of the People's Republic of China, and has been in force since 1 July 2018. It is the first edition of this standard.

This standard was developed in accordance with the rules given in GB/T 1.1-2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights; the issuing body shall not be held responsible for identifying any or all such patent rights.

This standard was proposed by and is under the jurisdiction of the National Technical Committee on Information Technology of Standardization Administration of China (SAC/TC 28).

Classification: ICS 35.180, CCS L 63.

1 Scope

This standard specifies the requirements, test methods, inspection rules, quality assessment procedures as well as marking, packaging, transportation and storage of power banks used by portable digital equipment, hereinafter referred to as power banks.

This standard is applicable to power banks for portable digital equipment in wired output mode, with an input voltage not greater than 250 V, a DC output voltage not greater than 60 V and a single-port output current not greater than 5 A.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies; for undated references, the latest edition, including any amendments, applies.

GB/T 191 Packaging - Pictorial marking for handling of goods; GB/T 2423.3 Environmental testing - Part 2: Testing method - Test Cab: Damp heat, steady state; GB/T 2423.6 Environmental testing for electric and electronic products - Part 2: Test methods - Test Eb and guidance: Bump; GB/T 2423.10 Environmental testing for electric and electronic products - Part 2: Test methods - Test Fc: Vibration (sinusoidal).

GB 4943.1-2011 Information technology equipment - Safety - Part 1: General requirements; GB/T 9254 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement; GB/T 17618 Information technology equipment - Immunity characteristics - Limits and methods of measurement; GB/T 18287-2013 General specification of lithium-ion cells and batteries for mobile phone; GB/T 18455 Package recycling marking.

GB/T 26125 Electrical and electronic products - Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers); GB/T 26572 Requirements of concentration limits for certain restricted substances in electrical and electronic products; GB/T 28164 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications; GB 31241 Lithium ion cells and batteries used in portable electronic equipments - Safety requirements.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1 power bank: non-fixed power supply system composed of a cell or battery, the corresponding circuit and a shell, which may provide a stable DC output and has a weight not exceeding 18 kg so as to be portable for the user. Note 1: the power bank is commonly known as a charge pal. Note 2: the circuit may be a step-down circuit or a boost circuit, or both. Note 3: the power bank may be connected to an AC or a DC power supply for charging.

3.2 rated input voltage: input voltage value designated by the manufacturer, expressed as Uin in volts (V). 3.3 rated input current: input current value designated by the manufacturer, expressed as Iin in amperes (A) or milliamperes (mA); it is the maximum continuous consumption current at the nominal input voltage.

3.4 rated output voltage: output voltage value designated by the manufacturer, expressed as Uout in volts (V). 3.5 rated output current: sum of the output currents of each port with the same output voltage designated by the manufacturer, expressed as Iout in amperes (A) or milliamperes (mA); it is the maximum continuous output current at the nominal output voltage.

3.6 effective output capacity: effective discharge capacity to the external load where a fully charged power bank discharges at the rated output current to the cut-off, expressed in ampere-hours (A·h) or milliampere-hours (mA·h). Discharge to the cut-off means that no output voltage is available at the output end of the power bank, or that the discharge-off conditions specified by the manufacturer are met.

3.7 rated capacity: effective discharge capacity of the power bank designated by the manufacturer, expressed as C in ampere-hours (A·h) or milliampere-hours (mA·h).

3.8 cell or battery rated energy: rated energy of the cell or battery used for the power bank, that is, the rated capacity of the cell or battery multiplied by its rated voltage, expressed in watt-hours (W·h) or milliwatt-hours (mW·h). For the measurement of the rated capacity of a lithium-ion cell or battery, see 5.3.2.2 of GB/T 18287-2013.

3.9 effective output energy: effective discharge energy to the external load where a fully charged power bank discharges at the rated output voltage and rated output current to the cut-off, expressed in watt-hours (W·h) or milliwatt-hours (mW·h).

3.10 conversion efficiency: ratio of the effective output energy of the power bank to the rated energy of the cell or battery, according to the charging and discharging conditions specified in this standard.

3.11 cycle life: number of charge-discharge cycles that can be performed before the effective output capacity of the power bank is less than 60 % of its rated capacity. 3.12 capacity retention: effective output capacity of the power bank after being stored at the specified temperature for the specified period.

3.13 leakage: visible leakage of liquid electrolyte [GB/T 28164-2011, definition 1.3.9]. 3.14 venting: release of gas via the pre-designed explosion-proof device upon the increase of the pressure in the power bank [GB 31241-2014, definition 3.22]. 3.15 rupture: mechanical damage to the power bank shell due to internal or external factors, resulting in exposure or spillage of inner matter, without ejection [GB/T 28164-2011, definition 1.3.11].

3.16 fire: visible flame of the power bank [GB/T 28164-2011, definition 1.3.12]. 3.17 explosion: severe rupture of the power bank shell, resulting in the ejection of a main component [GB/T 28164-2011, definition 1.3.13].

4 Requirements

4.1.1 Appearance: the surface is clean and free of obvious deformation and mechanical damage and the interface contact is free of rust; the surface carries the necessary clear power bank identification; the output and input interfaces are clearly marked so as to be convenient for connection; the interface, key, power indicator or lighting lamp, warnings and the like carry clear identifications.

4.1.2 Identification: the power bank body shall carry the name and model of the power bank; the name, trademark or identification mark of the manufacturer; the rated input voltage and current and the rated output voltage and current; the rated capacity; the type and rated energy of the cell or battery. For a multi-output-port power bank, the total current value at the same output voltage shall be marked, and the rated output voltage and current of each output port shall be marked near the port.

4.2 Interface: the output and input interfaces shall be clearly specified in the instructions for the power bank; they shall be upright and regular in appearance, free of damage and deformation, and designed to prevent reverse polarity. Such interfaces shall input and output normally after being connected.

4.3.1 Effective output capacity: at normal temperature the effective output capacity shall not be lower than the rated capacity; at low temperature it shall not be less than 60 % of the rated capacity; at high temperature it shall not be lower than the rated capacity. In each case the appearance of the power bank shall be free of obvious deformation, explosion, venting, fire, leakage and rupture.

4.3.2 Capacity retention: the effective output capacity of the power bank shall not be less than 80 % of the rated capacity. 4.3.3 Cycle life: the cycle life of the power bank shall not be less than 300 times.

4.3.4 Conversion efficiency: the conversion efficiency shall meet the value indicated in the manufacturer's instructions for the power bank and, if no value is indicated, shall not be less than 80 %.

4.3.5 Output voltage: the deviation of the actual output voltage shall be within Uout +/- 5 %. 4.3.6 Ripple and noise: the output voltage ripple and noise, peak-to-peak value, shall not be greater than 200 mV.

4.3.7 Power supply adaptability in the charging state: a power bank for AC supply shall charge normally at 220 V +/- 22 V and 50 Hz +/- 1 Hz; a power bank for DC supply shall charge normally where the deviation from the rated input voltage is +/- 5 %.