Charging method and apparatus

• US 10,164,457 B2
• Filed: 04/11/2017
• Issued: 12/25/2018
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Peng, Qi
• Primary Examiner(s): Williams, Arun C
• Application Number:
  US15/484,787
• Publication Number:
  US 20170222451A1
• Time in Patent Office: 623 Days
• Field of Search: 320167
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 1/30 Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations for resetting only G06F1/24
• CPC Class Codes: H01G 11/14 Arrangements or processes for adjusting or protecting hybrid or EDL capacitors emergency protective circuit arrangements specially adapted for capacitors, and effecting automatic switching in the event of an undesired change from normal working conditions H02H7/16; emergency protective circuit arrangements for limiting excess current or voltages without disconnection H02H9/00
• CPC Class Codes: H01G 11/18 against thermal overloads, e.g. heating, cooling or ventilating
• CPC Class Codes: H01G 9/28 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass
• CPC Class Codes: H02J 7/007192 in response to temperature
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: H02J 9/04 in which the distribution system is disconnected from the normal source and connected to a standby source
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

A charging method and apparatus are provided. The charging method includes obtaining power supply energy needed by a storage system during a power failure, detecting a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, where the supercapacitor is configured to provide the power supply energy to the storage system, determining a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy, and charging the supercapacitor according to the determined charging voltage. Therefore, the supercapacitor can be charged according to an actual charging voltage of the supercapacitor such that a life of the supercapacitor is prolonged.

Claims

1. A charging method, comprising:

obtaining a power failure sequence and a power failure duration of a plurality of devices during a power failure;

obtaining power information of a storage system after the devices have encountered the power failure;

obtaining a power curve according to the power failure sequence, the power failure duration, and the power information of the storage system;

performing integration on the power curve falling within the power failure duration of all the devices to obtain a power supply energy;

detecting a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, the supercapacitor being configured to provide the power supply energy to the storage system;

determining a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy; and

charging the supercapacitor according to the charging voltage.

2. The charging method of claim 1, further comprising:

obtaining a first power information of each of devices operating in the storage system, the power curve being obtained according to the first power information.

3. The charging method of claim 2, wherein obtaining the first power information of each of the devices comprises:

sampling powers of each of the devices in order to obtain at least one piece of second power information of each of the devices; and

selecting, from the at least one piece of second power information of each of the devices, second power information comprising a maximum power value as the first power information of each of the devices.

4. The charging method of claim 2, wherein obtaining the first power information of each of the devices comprises:

obtaining configuration information of each of the devices; and

obtaining the first power information of each of the devices from the configuration information of each of the devices.

5. The charging method of claim 1, wherein determining the charging voltage of the supercapacitor comprises:

determining a capacitance value of the supercapacitor according to the environmental temperature information; and

calculating the charging voltage of the supercapacitor according to the capacitance value and the power supply energy.

6. A charging apparatus, comprising:

a processor, and

a non-transitory computer-readable storage medium coupled to the processor and configured to store programming instructions for execution by the processor, the programming instructions instructing the processor to;

obtain a power failure sequence and a power failure duration of a plurality of devices during a power failure;

obtain power information of a storage system after the devices have encountered the power failure;

obtain a power curve according to the power failure sequence, the power failure duration, and the power information of the storage system;

perform integration on the power curve falling within the power failure duration of all the devices to obtain a power supply energy;

detect a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, the supercapacitor being configured to provide the power supply energy to the storage system;

determine a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy, and

charge the supercapacitor according to the charging voltage.

7. The charging apparatus of claim 6, wherein the programming instructions further instruct the processor to obtain a first power information of each of devices operating in the storage system, the power curve being obtained according to the first power information.

8. The charging apparatus of claim 7, wherein when obtaining the first power information of each of the devices, the programming instructions further instruct the processor to:

sample powers of each of the devices in order to obtain at least one piece of second power information of each of the devices; and

select, from the at least one piece of second power information of each of the devices, second power information comprising a maximum power value as the first power information of each of the devices.

9. The charging apparatus of claim 7, wherein when obtaining the first power information of each of the devices, the programming instructions further instruct the processor to:

obtain configuration information of each of the devices; and

obtain the first power information of each of the devices from the configuration information of each of the devices.

10. The charging apparatus of claim 6, wherein when determining the charging voltage of the supercapacitor, the programming instructions further instruct the processor to:

determine a capacitance value of the supercapacitor according to the environmental temperature information; and

calculate the charging voltage of the supercapacitor according to the capacitance value and the power supply energy.