Patent Publication Number: US-2018034292-A1

Title: Portable power source with removal warning function

Description:
CROSS-REFERENCE TO RELATED DISCLOSURES 
     This disclosure claims priority to Chinese Patent Application No. 201620797474.8 filed on Jun. 27, 2016, the contents of which are incorporated by reference herein. 
     FIELD 
     The disclosure generally relates to security, and particularly to a portable power source having an removal warning function. 
     BACKGROUND 
     Electronic power charged and stored into an electronic device such as a mobile phone is limited, therefore a user commonly connects and uses an independent and valuable portable power source to charge the electronic device anytime and anywhere. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
       Many aspects of the present disclosure can be better understood with reference to the drawing. The components are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. 
       The FIGURE is a block diagram of an exemplary embodiment of a portable power source. 
     
    
    
     DETAILED DESCRIPTION 
     It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiment described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. 
     The FIGURE shows an exemplary embodiment of a portable power source. The portable power source  100  includes a interface  10 , a charging and discharging circuit  20 , a battery  30 , a processor  40 , a wireless communication module  50 , and an alarm module  60 . The interface  10 , the charging and discharging circuit  40 , and the battery  30  are electronically connected and form a charging unit. The wireless communication module  50  and the alarm module  60  are electronically connected to the processor  40  and form an removal warning unit. 
     The interface  10  is configured to connect to an external power supply (not shown), and charge the battery  30  through the charging and discharging circuit  20 . The interface  10  may also connect to an electronic device (not shown), and control the battery  30  via the charging and discharging circuit  20 , thereby charging a battery (“ED battery”, but not shown) of the electronic device. The wireless communication module  50  is configured to establish a wireless communication connection between the portable power source  100  and the electronic device. The processor  40  determines whether a distance between the portable power source  100  and the electronic device is within or beyond a preset distance according to a state of the wireless communication connection, and controls the alarm module  60  to warn a user if the distance is beyond the preset distance. Security of the portable power source  100  and the electronic device is thereby enhanced. 
     In this exemplary embodiment, when the distance between the portable power source  100  and the electronic device is beyond the preset distance, the wireless communication connection is disconnected. Therefore, when the processor  40  detects that the wireless communication connection is disconnected, the processor  40  determines that the distance between the portable power source  100  and the electronic device is beyond the preset distance. 
     In this exemplary embodiment, the charging and discharging circuit  20  includes a discharging circuit  21  and a charging circuit  22 . The discharging circuit  21  is electronically connected between the interface  10  and the battery  30 . The discharging circuit  21  is configured to allow the battery  30  to supply charge to the ED battery when the interface  10  is connected to the electronic device, thereby charging the electronic device. The charging circuit  22  is electronically connected between the interface  10  and the battery  30 . The charging circuit  22  is configured to charge the battery  30  from an external power supply so that the battery  30  can store power when the interface  10  is electronically connected to the external power supply. 
     In this exemplary embodiment, the discharging circuit  221  is also electronically connected to the processor  40  to provide power to the processor  40 , the wireless communication module  50 , and the alarm module  60  of the removal warning unit. The continuous supply of power to the removal warning unit is preset as a first priority to avoid deactivation of the removal warning unit due to lack of power. 
     In other embodiments, the charging and discharging circuit  20  further includes a protecting circuit  23 . One end of the protecting circuit  23  is electronically connected to the discharging circuit  21  and the charging circuit  22 . Another end of the protecting circuit  23  is electronically connected to the battery  30 . The protecting circuit  23  is configured to protect the battery  30  from over-current or over-voltage during charging and discharging. 
     In other embodiments, the processor  40  further includes a detecting module  41 . The detecting module  41  is electronically connected to the charging and discharging circuit  20 , and configured to detect a remaining power level of the battery  30 . The processor  40  can display the power level and charging state (e.g. normally being charged, charging completed, etc.) and charging progress (e.g. charging ED battery to 30%, charging completion, etc.) through the electronic device. 
     In other embodiments, the processor  40  is configured to set the preset distance and an alarm mode (e.g. alarm/warning volume, and type of alarm) through the electronic device. 
     In other embodiments, the portable power source  100  further includes a storage unit  70  configured to store the above settings (i.e. the preset distance and the alarm mode). 
     In other embodiments, the processor  40  is configured to trigger the electronic device to issue its own warning through the wireless communication module  50  when the distance between the portable power source  100  and the electronic device reaches to the preset distance before loosing connection, thereby serving as a two-way reminder to the user to avoid losing the portable power source  100 . 
     In this exemplary embodiment, the alarm module  60  includes an amplifying circuit  61  and a speaker  62 . The processor  40  further includes an audio codec  42 . The audio codec  42  is electronically connected to the speaker  62  by the amplifying circuit  61 . When the distance between the portable power source  100  and the electronic device is beyond the preset distance, the processor  40  sends a warning signal to the speaker  62  by the audio codec  42 . The amplifying circuit  61  is configured to amplify the warning signal or sound. 
     The portable power source  100  both has a charging function and removal warning function, which can charge the ED battery of an electronic device and also can alarm the user to avoid losing or inadvertently carrying off the portable power source  100  when the distance between the portable power source  100  and the electronic device is beyond the preset distance. 
     It is to be understood, however, that even through numerous characteristics and advantages of the present disclosure have been set forth in the foregoing description, together with details of assembly and function, the disclosure is illustrative only, and changes may be made in details, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.