CN203951237U - Portable power source - Google Patents
Portable power source Download PDFInfo
- Publication number
- CN203951237U CN203951237U CN201420365060.9U CN201420365060U CN203951237U CN 203951237 U CN203951237 U CN 203951237U CN 201420365060 U CN201420365060 U CN 201420365060U CN 203951237 U CN203951237 U CN 203951237U
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- China
- Prior art keywords
- output
- power source
- control circuit
- mcu control
- portable power
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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 kind of portable power source, and it comprises battery, the DC/DC booster circuit being connected with battery, the output port that is arranged on DC/DC booster circuit output and MCU control circuit.Described portable power source also has with described output port and is arranged in parallel the power supply circuits at described DC/DC booster circuit output, described MCU control circuit is connected to the output of described power supply circuits, and described power supply circuits are provided with diode and are arranged in parallel the electric capacity at diode output with described MCU control circuit.
Description
Technical field
The utility model relates to power supply provisioning technique field, relates in particular to a kind of portable power source.
Background technology
Common portable power source generally includes DC/DC booster circuit, the USB output port that is connected to DC/DC booster circuit output and the MCU control circuit of lithium battery, connection lithium battery at present, its operation principle is that lithium battery 3.7V is boosted into 5V by DC/DC booster circuit, then by USB output port, externally exports.Wherein MCU control circuit is worked to unify coherent system by gathering voltage, electric current, temperature, output voltage, the output current signal of lithium battery, in different electric weight situations, demonstrate different system modes, at USB output port, occur cutting off and exporting and point out user under overload, short-circuit conditions especially.In addition, this kind of portable power source also has overheat protective function, in temperature, surpasses under limited case and cuts off and export.Wherein MCU control circuit is mainly born master control effect, therefore guarantees that the power supply of MCU control circuit is normally particularly important.Yet, at USB output port, occur under short-circuit conditions, the 5V voltage of DC/DC booster circuit output there will be a wide range of fluctuation, even can cause MCU control circuit to enter power-down mode, or cause MCU control circuit output abnormality, make the overheated operation of output circuit until damage.
For preventing above-mentioned condition, as shown in Figure 1, conventionally can by another DC/DC booster circuit, directly connect lithium battery to MCU control circuit and form independent current source and power.But, beyond original DC/DC booster circuit, increase again the problem that a DC/DC booster circuit will certainly cause the increase of cost and occur electromagnetic compatibility.
Therefore, be necessary to provide a kind of improved portable power source to address the above problem.
Utility model content
The purpose of this utility model is to provide that a kind of MCU of assurance control circuit is independently-powered and circuit design is simple, lower-cost portable power source.
For realizing above-mentioned utility model object, the utility model provides a kind of portable power source, it comprises battery, the DC/DC booster circuit being connected with battery, the output port that is arranged on DC/DC booster circuit output and MCU control circuit, described portable power source also has with described output port and is arranged in parallel the power supply circuits at described DC/DC booster circuit output, described MCU control circuit is connected to the output of described power supply circuits, and described power supply circuits are provided with diode and are arranged in parallel the electric capacity at diode output with described MCU control circuit.
As further improvement of the utility model, described output port is USB interface.
As further improvement of the utility model, described battery is single lithium battery or the lithium battery group that is connected in parallel.
The beneficial effects of the utility model are: the utility model portable power source arranges by described power supply circuits, not only can guarantee that MCU control circuit is independently-powered, be not subject to the impact of output port, and circuit design is simple, cost is lower, particularly better to the higher product application of EMC Requirements.
Accompanying drawing explanation
Fig. 1 is the structural representation of portable power source of the prior art.
Fig. 2 is the structural representation of the utility model portable power source one preferred embodiment.
Specific embodiment
Below with reference to embodiment shown in the drawings, the utility model is described in detail.But these embodiment do not limit the utility model, structure or the conversion in function that those of ordinary skill in the art makes according to these embodiment are all included in protection range of the present utility model.
Please refer to a preferred embodiment that Figure 2 shows that the utility model portable power source.Described portable power source comprises battery Bat, the DC/DC booster circuit being connected with battery Bat, the output port that is arranged on DC/DC booster circuit output, is arranged in parallel power supply circuits and the MCU control circuit at described DC/DC booster circuit output with described output port.Described MCU control circuit is connected to the output of described power supply circuits.
Wherein said power supply circuits are provided with diode D1 and are arranged in parallel the capacitor C 1 at diode D1 output with described MCU control circuit.
In the present embodiment, described output port is set to USB interface, and certainly, described output port also can be set to the interface of other types according to demand.Described battery Bat is single lithium battery or the lithium battery group that is connected in parallel.
Known according to above description, the utility model portable power source 100 is powered separately to MCU control circuit by the power supply circuits that independently arrange, and the capacitor C 1 that is provided with diode D1 on these power supply circuits and is arranged in parallel with MCU control circuit, wherein diode D1 can be by output port and power supply circuits isolation, add the characteristic that the voltage of capacitor C 1 can not suddenly change simultaneously, can effectively guarantee in special circumstances, for example, when output port occurs that overload or short circuit occur, the voltage at capacitor C 1 two ends can be higher than the minimum operating voltage of MCU control circuit, and capacitor C 1 can be powered to MCU control circuit under this kind of abnormal conditions.The capacitance setting of wherein said capacitor C 1 is determined jointly by the confession electrical power consumed of MCU control circuit and length break time of output port.
As known from the above, the utility model portable power source not only can guarantee that MCU control circuit is independently-powered, be not subject to the impact of output port, and circuit design is simple, and cost is lower, particularly better to the higher product application of EMC Requirements.
Listed a series of detailed description is above only illustrating for feasibility embodiment of the present utility model; they are not in order to limit protection range of the present utility model, all disengaging within equivalent embodiment that the utility model skill spirit does or change all should be included in protection range of the present utility model.
Claims (3)
1. a portable power source, the DC/DC booster circuit that comprise battery, is connected with battery, the output port that is arranged on DC/DC booster circuit output and MCU control circuit, it is characterized in that: described portable power source also has with described output port and is arranged in parallel the power supply circuits at described DC/DC booster circuit output, described MCU control circuit is connected to the output of described power supply circuits, and described power supply circuits are provided with diode and are arranged in parallel the electric capacity at diode output with described MCU control circuit.
2. portable power source according to claim 1, is characterized in that: described output port is USB interface.
3. portable power source according to claim 1, is characterized in that: described battery is single lithium battery or the lithium battery group that is connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365060.9U CN203951237U (en) | 2014-07-03 | 2014-07-03 | Portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365060.9U CN203951237U (en) | 2014-07-03 | 2014-07-03 | Portable power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951237U true CN203951237U (en) | 2014-11-19 |
Family
ID=51893254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420365060.9U Expired - Fee Related CN203951237U (en) | 2014-07-03 | 2014-07-03 | Portable power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203951237U (en) |
-
2014
- 2014-07-03 CN CN201420365060.9U patent/CN203951237U/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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215300 Suzhou high tech Zone, Jiangsu, Lu Shan Road, No. 199 Co-patentee after: Changshu Canadian Solar Inc. Patentee after: Artes sunshine Power Group Co. Ltd. Address before: 215300 Suzhou high tech Zone, Jiangsu, Lu Shan Road, No. 199 Co-patentee before: Changshu Canadian Solar Inc. Patentee before: Canadian (China) Investment Co., Ltd. |
|
| 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: 20141119 Termination date: 20180703 |