CN208656440U - A kind of power supply system applied to cell phone terminal with video capture device - Google Patents
A kind of power supply system applied to cell phone terminal with video capture device Download PDFInfo
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- CN208656440U CN208656440U CN201820988087.1U CN201820988087U CN208656440U CN 208656440 U CN208656440 U CN 208656440U CN 201820988087 U CN201820988087 U CN 201820988087U CN 208656440 U CN208656440 U CN 208656440U
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- power supply
- cell phone
- phone terminal
- supply system
- booster circuit
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Abstract
The utility model is suitable for charging technique improvement areas, provide a kind of power supply system applied to cell phone terminal with video capture device, the power supply system includes the first booster circuit, second booster circuit, cutoff switch, power supply module, cell phone terminal and external camera, the output end of first booster circuit is separately connected the input terminal of second booster circuit and the input terminal of cutoff switch, the output end of second booster circuit connects the feeder ear of the external camera, the output end of the cutoff switch is separately connected the charge-discharge end of the power supply module and the feeder ear of cell phone terminal, the output end of the external camera connects the input terminal of the cell phone terminal.The power supply that motorcycle can be utilized Vehicular continuous, stable；When powering on, being lower electric, there is Auto Power On, automatic shut-off function；Camera 5V power supply turns 5V module by 4.5V and completes, and reduces mainboard because generating calorific value when being raised to 5V from cell voltage.
Description
Technical field
The utility model belongs to charging technique improvement areas, more particularly to a kind of cell phone terminal band video that is applied to is adopted
Collect the power supply system of equipment.
Background technique
The power supply of Vehicular video terminal usually all uses the power supply mode of active and standby power supply.When normal work, vehicle always insulate
It closes, by main power source powered operation, when main power source power down, is switched to backup power source and continues to power.It is vehicle-mounted when in order to guarantee switching
Video frequency terminal apparatus still is able to steady operation, and metal-oxide-semiconductor is generallyd use between main power source and backup power source as switching device.This
Kind switching mode is that handoff response speed is fast a little, and still, due to not apparent trip point, backup power source can not directly connect
A level is picked up, therefore, it is necessary to additional spare storage batterys, while also to increase the charging circuit of spare storage battery, and metal-oxide-semiconductor belongs to
Semiconductor devices, in high current work, failure is high-efficient, and periphery increases multiple attached devices in addition, these all virtually expand
The failure rate of equipment.
Cell phone terminal is installed on motorcycle, and in long-time video acquisition, battery capacity is inadequate.
Utility model content
The purpose of this utility model is to provide a kind of power supply systems applied to cell phone terminal with video capture device
System, it is intended to it solves on cell phone terminal installation motorcycle, in long-time video acquisition, the inadequate technology of local battery capacity
Problem.
The utility model is realized in this way a kind of power supply system applied to cell phone terminal with video capture device
System, the power supply system include the first booster circuit, the second booster circuit, cutoff switch, power supply module, cell phone terminal and
External camera, the output end of the first booster circuit be separately connected second booster circuit input terminal and cutoff switch it is defeated
Enter end, the output end of second booster circuit connects the feeder ear of the external camera, the output end of the cutoff switch
It is separately connected the charge-discharge end of the power supply module and the feeder ear of cell phone terminal, the output end of the external camera connects
Connect the input terminal of the cell phone terminal.
The further technical solution of the utility model is: first booster circuit uses boost chip U2 by 12V voltage
Be converted to 4.5V, the 1st foot of the boost chip U2 connects external voltage DC12V, the boost chip U2 the 2nd, 4 feet connect
Ground.
The further technical solution of the utility model is: second booster circuit uses boost chip U3 by 4.5V voltage
Boosting is 5.0V voltage, and the 1st foot of the boost chip U3 connects the 3rd foot of the boost chip U2, the boost chip U3
The 2nd, 4 feet are grounded.
The further technical solution of the utility model is: the cutoff switch is described using Schottky diode D4
The anode of Schottky diode D4 connects the 3rd foot of the boost chip U2.
The further technical solution of the utility model is: the power supply module uses lithium battery, the anode of the lithium battery
Connect the cathode of the Schottky diode D4, the cathode ground connection of the lithium battery.
The further technical solution of the utility model is: the charging end of the cell phone terminal is separately connected the Xiao Te
The cathode of based diode D4 and the 3rd foot of boost chip U3.
The further technical solution of the utility model is: the USB camera that the external camera uses, the USB take the photograph
As the feeder ear of head connects the 3rd foot of the boost chip U3, the USB camera passes through USB and goes here and there described in interface mode connection
Cell phone terminal.
The beneficial effects of the utility model are: power supply that can be Vehicular continuous, stable using motorcycle；Power on, lower electricity
When, there is Auto Power On, automatic shut-off function；Camera 5V power supply turns 5V module by 4.5V and completes, and reduces mainboard because from battery
Voltage generates calorific value when being raised to 5V.
Detailed description of the invention
Fig. 1 is provided by the embodiment of the utility model applied to power supply system of the cell phone terminal with video capture device
Structural block diagram.
Fig. 2 is provided by the embodiment of the utility model applied to power supply system of the cell phone terminal with video capture device
Electrical schematic diagram.
Specific embodiment
As shown in Figure 1, 2, provided by the utility model to be applied to power supply system of the cell phone terminal with video capture device
System, the power supply system include the first booster circuit, the second booster circuit, cutoff switch, power supply module, cell phone terminal and
External camera, the output end of the first booster circuit be separately connected second booster circuit input terminal and cutoff switch it is defeated
Enter end, the output end of second booster circuit connects the feeder ear of the external camera, the output end of the cutoff switch
It is separately connected the charge-discharge end of the power supply module and the feeder ear of cell phone terminal, the output end of the external camera connects
Connect the input terminal of the cell phone terminal.
12V voltage is converted to 4.5V using boost chip U2 by first booster circuit, and the 1st of the boost chip U2 the
Foot connects external voltage DC12V, the boost chip U2 the 2nd, 4 feet are grounded.
Second booster circuit uses boost chip U3 by 4.5V boost in voltage for 5.0V voltage, the boost chip U3
The 1st foot connect the 3rd foot of the boost chip U2, the boost chip U3 the 2nd, 4 feet are grounded.
The cutoff switch connects the liter using Schottky diode D4, the anode of the Schottky diode D4
Press the 3rd foot of chip U2.
The power supply module uses lithium battery, and the anode of the lithium battery connects the cathode of the Schottky diode D4,
The cathode of the lithium battery is grounded.
The charging end of the cell phone terminal is separately connected the cathode and boost chip U3 of the Schottky diode D4
The 3rd foot.
The feeder ear of the USB camera that the external camera uses, the USB camera connects the boost chip U3
The 3rd foot, the USB camera, which passes through USB, goes here and there interface mode and connects the cell phone terminal.
This power supply system solves on cell phone terminal installation motorcycle, and in long-time video acquisition, local battery holds
Measure inadequate problem.
This power supply system is cell phone terminal using power supply on motorcycle, provides and powers for a long time.And it rubs in connection
Motorcycle vehicle power supply when, cell phone terminal Auto Power On；When disconnecting motorcycle vehicle power supply, cell phone terminal is closed automatically
Machine.
This power supply system retains lithium ion battery.After disconnecting motorcycle vehicle power supply, cell phone terminal automatic shutdown,
Lithium ion can allow cell phone terminal normally to run through shutdown programm, it is ensured that cell phone terminal, can be normal when being switched on for second
Opening initialization.
Traditional circumscribed USB camera power supply mode is generally powered from battery (4.2V~4.3V), by cell phone end
The mainboard boosting at end is 5V, and additional calorific value can be generated on mainboard；The power supply (5V) of camera is by mainboard in this power supply system
Circuit in addition provides, and generated calorific value may be located remotely from mainboard.
A kind of power supply system, including cell phone terminal, circumscribed USB camera, 4.5V-5V boost module, lithium-ion electric
Pond (4.2V-4.35V), Schottky diode, 12V-4.5V power conversion module.
Cell phone terminal be based on our company's independent development, band 4G network data transmission function, image display function,
The other functions such as GPS positioning.
Circumscribed USB camera.
Lithium ion battery: cell voltage: 4.2V-4.35V, battery capacity: 500mA-1500mA；Discharge capability: 1C.
Schottky diode: germanium tube, tube voltage drop 0.2V-0.3V, operating current 3A.
4.5V turns 5V booster circuit.
This power supply system needs to switch to 4.5V_3A from outer access 12V_3A DC power supply.
The external motorcycle vehicle power supply of this power supply system, power supply are 12V/3A or more.Firstly, turning 4.5V by a 12V
Booster circuit, provide 4.5V_3A power supply for entire cell phone terminal system.
Supply voltage is raised to after 4.5V, is divided into 2 tunnels: being turned 5V (1A) boosting by 4.5V all the way, is circumscribed USB camera
Power supply is provided；It is that cell phone terminal and battery are powered all the way after through concatenated Schottky diode；This concatenated two pole
The effect of pipe: turning 4.5V booster circuit after a power failure in 12V, and preventing battery still is that 4.5V turns the power supply of 5V platelet.
The power supply process of cell phone terminal: 12V -> 4.5V -> diode (tube voltage drop 0.2V-0.3V) -> master
Plate；Diode here, prevents battery from flowing back and turns 5V power supply to 4.5V, and false triggering is switched on.
While 4.5V liter 5V is that camera is powered, mainboard can detect this 5V；If detecting 5V, cell phone terminal
Execute boot program.
The moment of 5V power down, mainboard detect 5V power down, and cell phone terminal executes shutdown programm；At this point, being supplied by battery
Electricity completes entire shutdown process；The unilateal conduction of Schottky diode before battery acts on, and blocking battery is 4.5V-5V platelet
Power supply, avoid the generation of starting-up signal (5V).
To make 2 power conversion modules that there is function and load capacity, it is not limited to model.
Using Schottky diode (germanium tube pressure drop 0.2V-0.3V), electric energy power 3A is crossed, model is not limited to.
External camera is not limited to model, selects and is applicable in pixel, power consumption 200mA-300mA or so, is not limited to model.
Lithium battery selects 4.2V-4.3V, capacity 800-1500mAh to be selected according to internal structural space.
12V_5A (DC12V_IN) is obtained from motorcycle.
Specific implementation process, module, element connection type are as shown in Figure 2.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (7)
1. a kind of power supply system applied to cell phone terminal with video capture device, it is characterised in that: the power supply system
Including the first booster circuit, the second booster circuit, cutoff switch, power supply module, cell phone terminal and external camera, first
The output end of booster circuit is separately connected the input terminal of second booster circuit and the input terminal of cutoff switch, and described second liter
The output end of volt circuit connects the feeder ear of the external camera, and the output end of the cutoff switch is separately connected the power supply
The charge-discharge end of module and the feeder ear of cell phone terminal, it is whole that the output end of the external camera connects the cell phone
The input terminal at end.
2. power supply system according to claim 1, which is characterized in that first booster circuit will using boost chip U2
12V voltage is converted to 4.5V, and the 1st foot of the boost chip U2 connects external voltage DC12V, the boost chip U2 the 2nd,
4 feet are grounded.
3. power supply system according to claim 2, which is characterized in that second booster circuit will using boost chip U3
4.5V boost in voltage is 5.0V voltage, and the 1st foot of the boost chip U3 connects the 3rd foot of the boost chip U2, the liter
The 2nd of chip U3 the, 4 feet are pressed to be grounded.
4. power supply system according to claim 3, which is characterized in that the cutoff switch is using Schottky diode
D4, the anode of the Schottky diode D4 connect the 3rd foot of the boost chip U2.
5. power supply system according to claim 4, which is characterized in that the power supply module uses lithium battery, the lithium electricity
The anode in pond connects the cathode of the Schottky diode D4, the cathode ground connection of the lithium battery.
6. power supply system according to claim 5, which is characterized in that the charging end of the cell phone terminal is separately connected
The cathode of the Schottky diode D4 and the 3rd foot of boost chip U3.
7. power supply system according to claim 6, which is characterized in that the USB camera that the external camera uses, institute
The feeder ear for stating USB camera connects the 3rd foot of the boost chip U3, and the USB camera is connected by USB string interface mode
Connect the cell phone terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820988087.1U CN208656440U (en) | 2018-06-26 | 2018-06-26 | A kind of power supply system applied to cell phone terminal with video capture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820988087.1U CN208656440U (en) | 2018-06-26 | 2018-06-26 | A kind of power supply system applied to cell phone terminal with video capture device |
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| CN208656440U true CN208656440U (en) | 2019-03-26 |
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| CN201820988087.1U Active CN208656440U (en) | 2018-06-26 | 2018-06-26 | A kind of power supply system applied to cell phone terminal with video capture device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182154A (en) * | 2019-05-13 | 2019-08-30 | 奇瑞新能源汽车技术有限公司 | A kind of vehicle-mounted mobile monitoring device and its mend method for electrically |
-
2018
- 2018-06-26 CN CN201820988087.1U patent/CN208656440U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182154A (en) * | 2019-05-13 | 2019-08-30 | 奇瑞新能源汽车技术有限公司 | A kind of vehicle-mounted mobile monitoring device and its mend method for electrically |
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