CN204858650U - Mobile power supply - Google Patents
Mobile power supply Download PDFInfo
- Publication number
- CN204858650U CN204858650U CN201520564003.8U CN201520564003U CN204858650U CN 204858650 U CN204858650 U CN 204858650U CN 201520564003 U CN201520564003 U CN 201520564003U CN 204858650 U CN204858650 U CN 204858650U
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- CN
- China
- Prior art keywords
- transformer
- power source
- portable power
- relay
- input
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a mobile power supply, the mobile power supply surface is provided with quantity indicating lamp and button, still be provided with the power output interface in the mobile power supply, still include the transformer, transformer and mobile power supply pass through the articulate, the transformer is including the vary voltage circuit, the input and the connector assembly of vary voltage circuit, the plug sets up on the transformer, the positive output end of vary voltage circuit is connected with three way relay LS1's first common port and second common port, the cathode output of vary voltage circuit is connected with three way relay LS1's third common port and three way relay LS1's an input, three way relay LS1's another input and the first output negative pole of normally opening end and opto -coupler U1 are connected, the utility model discloses if be connected transformer and power earlier under the condition that the transformer is not connected with mobile power supply, then the circuit can not be exported, avoids the interface to damage increase of service life.
Description
Technical field
The utility model relates to field of power supplies, particularly relates to a kind of portable power source.
Background technology
Existing portable power source, when charging, needs a transformer by the voltage of voltage transition needed for portable power source, together with then being received with portable power source joint by transformer joint, namely can charge to portable power source.Existing have two problems: 1. after portable power source is full of electricity, and transformer still keeps the connection with portable power source, can cause the problem of floating charge, and when meeting thunderbolt, just can by transformer damage portable power source; 2. existing portable power source is when charging, and correct way, after portable power source joint is first connected with transformer joint, is being plugged in by transformer.But transformer is first electrically connected with city by user, and now transformer joint is charged, and then transformer joint is connected with portable power source joint by user again.Because portable power source inside has electric capacity, huge at two junction contacts immediate currents, spark can be produced joint is burnt, repeatedly, the easy loose contact of joint.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of portable power source, solves existing portable power source and transformer joint and easily to damage with portable power source transformer and portable power source after electricity is full of and also keep the problem be connected.
The utility model is achieved in that a kind of portable power source, portable power source surface is provided with battery capacity indication lamp and button, also power output interface is provided with in portable power source, also comprise transformer, transformer is connected by joint with portable power source, transformer includes transforming circuit, the input of transforming circuit is connected with plug, plug is arranged on the transformer, the cathode output end of transforming circuit is connected with first common port of No. three relay LS1 and the second common port, the cathode output end of transforming circuit is connected with an input of the 3rd common port of No. three relay LS1 and No. three relay LS1, another input of No. three relay LS1 is connected with the output negative pole of the first Chang Kaiduan and optocoupler U1, the output cathode of optocoupler U1 is connected with first normal-closed end of No. three relay LS1, second normal-closed end of No. three relay LS1 is connected with one end of precision resistance R1, the other end of precision resistance R1 is connected with one end of one end of transformer joint and resistance R2, the other end of resistance R2 is connected with the input positive pole of one end of resistance R3 and optocoupler U1, the other end of resistance R3 and the input negative pole of optocoupler U1, 3rd normal-closed end of No. three relay LS1 is connected with the other end of transformer joint, portable power source comprises charging circuit, the input of charging circuit is connected with portable power source joint, the output of charging circuit is connected with storage battery.
The utility model tool has the following advantages: the connection that can disconnect transformer and power consumption equipment after power consumption equipment is full of electricity, if transformer is first connected with power supply when transformer is not connected with portable power source by user simultaneously, then circuit can not export, avoid interface to damage, increase the service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1 and Fig. 2, the utility model provides a kind of portable power source, portable power source surface is provided with battery capacity indication lamp 1 and button 2, also power output interface is provided with in portable power source, power output interface is used for out-put supply, battery capacity indication lamp is used to indicate power supply dump energy, and whether button exports for controlling power output interface.Also comprise transformer 3, transformer is connected by joint with portable power source, transformer includes transforming circuit, the input of transforming circuit is connected with plug 4, plug is arranged on the transformer, the cathode output end of transforming circuit is connected with first common port of No. three relay LS1 and the second common port, the cathode output end of transforming circuit is connected with an input of the 3rd common port of No. three relay LS1 and No. three relay LS1, another input of No. three relay LS1 is connected with the output negative pole of the first Chang Kaiduan and optocoupler U1, the output cathode of optocoupler U1 is connected with first normal-closed end of No. three relay LS1, second normal-closed end of No. three relay LS1 is connected with one end of precision resistance R1, the other end of precision resistance R1 is connected with one end of one end of transformer joint and resistance R2, the other end of resistance R2 is connected with the input positive pole of one end of resistance R3 and optocoupler U1, the other end of resistance R3 and the input negative pole of optocoupler U1, 3rd normal-closed end of No. three relay LS1 is connected with the other end of transformer joint, portable power source comprises charging circuit, the input of charging circuit is connected with portable power source joint, the output of charging circuit is connected with storage battery.Storage battery is used for powering to portable power source.
Wherein, transforming circuit is used for changing the alternating current of plug into direct current, as being transformed into the direct current of 5V.Charging circuit is for receiving the electricity of portable power source joint and accumulators BT1 charges, and charging circuit is generally size and the voltage of charging current for controlling storage battery.The normal-closed end of relay does not have to be connected (closing) during electricity at relay input with common port, and the Chang Kaiduan of relay and common port do not have to be disconnect (open circuit) during electricity at relay input.When relay input obtains electric, normal-closed end and common port disconnect, and Chang Kaiduan is connected with common port.
Below the course of work of the present utility model is described in detail: the first situation: transformer joint is not connected with portable power source joint, plug is connected with power supply by user, then transforming circuit output voltage, voltage two ends flow to the second normal-closed end and the 3rd normal-closed end after the second common port and the 3rd common port, because transformer joint does not have load, then the voltage of transformer joint is exactly the output voltage of transforming circuit.This voltage is after resistance R2 and R3 dividing potential drop, and the voltage produced at optocoupler place is greater than optocoupler conducting voltage.Optocoupler is luminous, and the conducting of optocoupler output, then the voltage of the first normal-closed end arrives another input of No. three relays after optocoupler output, then No. three relays obtain electric.No. three relays obtain electric after, first Chang Kaiduan obtains voltage, this voltage is input to another input of No. three relays, what maintain No. three relays obtains electricity condition, under No. three relays obtain electricity condition, the second normal-closed end and the 3rd normal-closed end, all disconnect with transforming circuit, make transformer joint without any voltage, simultaneously the buffer action of optocoupler make transformer joint completely and transforming circuit disconnect.Now be connected with portable power source joint by transformer joint again, do not have voltage, the joint of portable power source would not damage.
The second state, user uses according to normal sequence, is connected, is then connected with power supply by plug again by transformer joint with portable power source joint.Now transforming circuit output voltage, voltage two ends flow to the second normal-closed end and the 3rd normal-closed end after the second common port and the 3rd common port.Because transformer joint is connected with portable power source, then there is load.There is load will generation current, thus precision resistance R1 will produce pressure drop.Then the voltage of transformer joint is exactly the voltage that the output voltage of transforming circuit deducts on precision resistance R1, and joint voltage is relatively low.This voltage is after resistance R2 and R3 dividing potential drop, and the voltage produced at optocoupler place is less than optocoupler conducting voltage.Optocoupler is not luminous, and relay just keeps this state.Namely transformer can carry out normal voltage supply to portable power source.Because transformer joint connects with portable power source joint, then when powering up, the joint of portable power source can't damage again.
Namely above two kinds of situations avoid the damage of interface.
In the third situation, portable power source is full of electricity, then the power consumption of portable power source greatly reduces, then the electric current on precision resistance R1 also just reduces, and makes the voltage of transformer joint start again to raise, is greater than optocoupler luminous voltage after dividing potential drop.Optocoupler is luminous.As the first situation, as long as optocoupler is luminous, just equal portable power source and transformer disconnects completely, the situation of floating charge now can not be caused to occur, and owing to being disconnect completely, even if transformer is struck by lightning suddenly, current thunderbolt also can not have influence on portable power source, ensure that the safety of portable power source.
The foregoing is only embodiment of the present utility model; not thereby scope of patent protection of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. a portable power source, it is characterized in that: portable power source surface is provided with battery capacity indication lamp and button, also power output interface is provided with in portable power source, also comprise transformer, transformer is connected by joint with portable power source, transformer includes transforming circuit, the input of transforming circuit is connected with plug, plug is arranged on the transformer, the cathode output end of transforming circuit is connected with first common port of No. three relay LS1 and the second common port, the cathode output end of transforming circuit is connected with an input of the 3rd common port of No. three relay LS1 and No. three relay LS1, another input of No. three relay LS1 is connected with the output negative pole of the first Chang Kaiduan and optocoupler U1, the output cathode of optocoupler U1 is connected with first normal-closed end of No. three relay LS1, second normal-closed end of No. three relay LS1 is connected with one end of precision resistance R1, the other end of precision resistance R1 is connected with one end of one end of transformer joint and resistance R2, the other end of resistance R2 is connected with the input positive pole of one end of resistance R3 and optocoupler U1, the other end of resistance R3 and the input negative pole of optocoupler U1, 3rd normal-closed end of No. three relay LS1 is connected with the other end of transformer joint, portable power source comprises charging circuit, the input of charging circuit is connected with portable power source joint, the output of charging circuit is connected with storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520564003.8U CN204858650U (en) | 2015-07-30 | 2015-07-30 | Mobile power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520564003.8U CN204858650U (en) | 2015-07-30 | 2015-07-30 | Mobile power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204858650U true CN204858650U (en) | 2015-12-09 |
Family
ID=54749164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520564003.8U Expired - Fee Related CN204858650U (en) | 2015-07-30 | 2015-07-30 | Mobile power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204858650U (en) |
-
2015
- 2015-07-30 CN CN201520564003.8U patent/CN204858650U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160730 |