CN204696708U - Portable power source electricity display control circuit - Google Patents

Portable power source electricity display control circuit Download PDF

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Publication number
CN204696708U
CN204696708U CN201520174877.2U CN201520174877U CN204696708U CN 204696708 U CN204696708 U CN 204696708U CN 201520174877 U CN201520174877 U CN 201520174877U CN 204696708 U CN204696708 U CN 204696708U
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China
Prior art keywords
circuit
control circuit
power source
portable power
display control
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Application number
CN201520174877.2U
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Chinese (zh)
Inventor
易克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chipsea Technologies Shenzhen Co Ltd
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Xinhai Science And Technology Co Ltd Shenzhen City
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Abstract

The utility model discloses a kind of portable power source electricity display control circuit, include the charging control circuit, load place in circuit and the power detection circuit that are connected with governor circuit respectively, between described governor circuit and load place in circuit, be also provided with energy information transmission circuit.The utility model can make user convenient on load terminal, intuitively, monitor the electricity of portable power source safely in real time, effective production control cost, greatly improve Consumer's Experience.

Description

Portable power source electricity display control circuit
Technical field
The utility model relates to mobile charging technology, particularly relates to a kind of portable power source electricity display control circuit.
Background technology
Along with the high speed development of mobile Internet and intelligent terminal technology, people can utilize that the terminals such as smart mobile phone obtain information, amusement more and more easily whenever and wherever possible.But the various operation such as large-screen touch-control, mobile Internet access, application program operation of smart mobile phone, inevitably needs more electricity than traditional communication terminal, thus causes its electric quantity consumption speed quickly.
It is too fast that the appearance of portable power source solves smart mobile phone electric quantity consumption well, and not easily find the problem of fixing charging inlet during trip outside.The multiple advantages such as portable power source is large with its capacity, charging rate is fast, be convenient for carrying, along with smart mobile phone together, become people and to go on a journey essential items.
Portable power source utilizes battery charging and discharging principle to charge to smart mobile phone, panel computer even load, and in the process of charging, the electricity of itself is consumed.After the dump energy of portable power source runs out of, just cannot charge to load, therefore, know the dump energy information of portable power source, be very important.
The portable power source of prior art, be mostly indicate its information about power roughly by battery capacity indication lamp, this indication scheme is very rough, and when dump energy is less, user is difficult to estimate that it whether is enough full of electricity to load.In order to overcome this problem, there is a kind of portable power source of more advanced band display screen (as LCD), although this portable power source accurately can show information about power on the display screen himself carried, but, because it needs, by increasing display screen and could realizing with display driver chip, to result in the increase of production cost.
Utility model content
The technical problem that the utility model solves is, a kind of portable power source electricity display control circuit is provided, this circuit can make user convenient on load terminal, intuitively, monitor the electricity of portable power source, effective production control cost safely in real time, and greatly improve Consumer's Experience.
In order to solve the problems of the technologies described above, the utility model discloses following scheme:
A kind of portable power source electricity display control circuit, includes the charging control circuit, load place in circuit and the power detection circuit that are connected with governor circuit respectively, is also provided with energy information transmission circuit between described governor circuit and load place in circuit.Described portable power source electricity display control circuit also includes the communications control circuit be located between described governor circuit and load place in circuit.Described communications control circuit includes remained capacity circuit, communication interface control circuit, carrying ground control circuit and transmission interface circuit.Described load place in circuit includes NMOS tube, USB loading interfaces, electric capacity.
Preferably, described communication interface control circuit includes the first analog switch chip U11, triode Q22, resistance R99, R91 and R92, and wherein, the base stage of described triode Q22 is connected with main control chip by resistance R92; Collector electrode is by resistance R91 ground connection; Emitter is connected with the Enable Pin of the first switch analog chip U11 and is connected to main control chip by resistance R99.
Described remained capacity circuit includes bridge-type resistance circuit.
Preferably, described carrying ground control circuit includes the second analog switch chip U22, and the Enable Pin of this second analog switch chip is connected with governor circuit, earth terminal is connected with the earth terminal of described loading interfaces.
Preferably, described transmission interface circuit is Universal Asynchronous Receive/dispensing device.
Preferably, the temperature collection circuit be connected with described governor circuit is also included.
Preferably, described power detection circuit includes the battery voltage detection circuit be connected with described governor circuit.
Preferably, described power detection circuit also includes the discharging current testing circuit and charging current detecting circuit that are connected with described governor circuit respectively.
The beneficial effects of the utility model are:
The information such as the electricity of portable power source are sent to load end display by utilizing Load transportation control circuit by embodiment of the present utility model, make user can convenient on load terminal, intuitively, monitor the electricity of portable power source safely in real time, thus when not increasing production cost, substantially increase Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of a portable power source electricity display control circuit of the present utility model embodiment.
Fig. 2 is the circuit connection diagram of a portable power source electricity display control circuit of the present utility model embodiment.
Embodiment
Describe an embodiment of the portable power source electricity display control circuit that the utility model provides in detail below with reference to Fig. 1 and Fig. 2, the present embodiment is mainly used in the dump energy showing portable power source when utilizing portable power source to charge to intelligent communications terminal (as smart mobile phone, the panel computer) even load with display unit in load; As shown in Figure 1, the present embodiment mainly includes the charging control circuit 2, load place in circuit 3 and the power detection circuit 4 that are connected with governor circuit 1 respectively, and is located at the energy information transmission circuit 5 between described governor circuit 1 and load place in circuit 3.
In addition, the present embodiment also can include the transport communication control circuit 6 be located between described governor circuit 1 and load place in circuit 3.
In addition, the present embodiment also can include the temperature collection circuit 7 be connected with described governor circuit 1.
During specific implementation, described governor circuit 1 can adopt the ADC module of MCU chip U2 inside to realize.
During specific implementation, described transport communication control circuit 5 specifically can include the transmission control load identification circuit 51 be connected with described governor circuit 1 respectively, port access control circuit 52, carrying ground control circuit 53, transmission interface circuit 54.
Wherein, the Main Function of remained capacity circuit 51 identifies load information, as part mobile phone model etc.During specific implementation, the bridge-type resistance circuit that remained capacity circuit 51 can adopt resistance R4, R9, R2, R3 to build realizes.
The Main Function of communication port control circuit 52 is that the port controlled between governor circuit 1 and load incoming end 3 accesses.Communication port control circuit 52 can adopt the first analog switch chip U11, triode Q22 and resistance R99, R91, R92 to realize.Wherein, the base stage of triode Q22 is connected with the P1.4 pin (PCON mouth) of main control chip U2 by resistance R92; Collector electrode is by resistance R91 ground connection; Emitter is connected with two Enable Pin OE mouths of the first switch analog chip U11 and is connected to the PSW mouth of main control chip U2 by resistance R99.In addition, described PSW mouth is also connected to the VDD mouth of the first analog switch chip U11.
The Main Function of carrying ground control circuit 53 is that the earth terminal of portable power source is connected together with the earth terminal of load.Carrying ground control circuit 53 can adopt the second analog switch chip U22 to realize.Two Enable Pin OE mouths of this second analog switch chip U22 are connected with the P1.4 pin (PCON mouth) of main control chip U2, PCON mouth when normal hibernation, charging and non-loaded (mobile phone insertion) be all defaulted as high level, namely the OE mouth of the second analog switch chip U22 is high level, and the second analog switch chip U22 is in enabled state always.
During specific implementation, load place in circuit 3 can adopt loading interfaces J1, NMOS tube Q5, electric capacity C14 and resistance R5 to realize.The effect of NMOS tube Q5 is after boosting (mobile phone is generally 5V boosting), on/off load charge power supply.4,5 pin OUTGND and the SHELL of loading interfaces J1 connect together, and connect together, UGND pin and the GNDQ pin of main control chip U2 connect together portable power source and mobile phone.
During specific implementation, transmission interface circuit 54 can adopt Universal Asynchronous Receive/dispensing device (UART) to realize.
During specific implementation, described power detection circuit 4 specifically can include the battery voltage detection circuit 41 be connected with described governor circuit 1.
Further, described power detection circuit 4 also can include the discharging current testing circuit 42 and charging current detecting circuit 43 that are connected with described governor circuit 1 respectively.
The operation principle of the present embodiment is described in detail below with reference to Fig. 2.
When the loading interfaces J1 of portable power source has load to access, PCON is high level, and the OE port of the second analog switch chip U22 is enable, makes the 4th of loading interfaces J1 the, 5 pin connect together, be connected by portable power source earth terminal with the earth terminal of load.
When loading interfaces J1 is without boosting (without charging), PSW mouth is low level always, the OE mouth of the first analog switch chip U11 is low level, first analog switch chip U11 is not enable, D+/D-pin and bridge-type resistance R2, R3, R4, R9 circuit of loading interfaces J1 disconnect, and now load is communicated with the serial ports D+/D-of main control chip U2 by D+/D-pin.
Load sends to the main control chip U2 of portable power source the relevant information having load to access by the D+/D-pin of loading interfaces J1, after main control chip U2 receives this information, send the information such as battery level information, current battery temperature, No. ID, portable power source by energy information transmission circuit 5 to load, these information can show at its display interface after arriving load in real time; And, load is after receiving above-mentioned information, startup charge information is sent to main control chip U2 by the D+/D-pin of loading interfaces J1, after main control chip U2 receives the startup charge information from load, PCON mouth is dragged down, close the enable of the second analog switch chip U22, the earth terminal of disconnecting consumers and portable power source; And PSW mouth is set high, open the enable of the first analog switch chip U11, connect D+/D-pin and bridge-type resistance R2, R3, R4, R9 circuit of loading interfaces J1, NMOS tube Q5 conducting, open the boosting of loading interfaces J1, load is charged, and continues to show the information such as the electricity of portable power source in real time at the display interface of load between charge period.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.

Claims (7)

1. a portable power source electricity display control circuit, include the charging control circuit be connected with governor circuit respectively, load place in circuit and power detection circuit, it is characterized in that, energy information transmission circuit is also provided with between described governor circuit and load place in circuit, also include the transport communication control circuit be located between described governor circuit and load place in circuit, described transport communication control circuit includes remained capacity circuit, communication port control circuit, carrying ground control circuit, transmission interface circuit, described load place in circuit includes the NMOS tube be connected to each other, loading interfaces, electric capacity C14.
2. portable power source electricity display control circuit as claimed in claim 1, it is characterized in that, described communication port control circuit includes the first analog switch chip U11, triode Q22, resistance R99, R91 and R92, wherein, the base stage of described triode Q22 is connected with main control chip by resistance R92; Collector electrode is by resistance R91 ground connection; Emitter is connected with the Enable Pin of the first switch analog chip U11 and is connected to main control chip by resistance R99.
3. portable power source electricity display control circuit as claimed in claim 1, it is characterized in that, described carrying ground control circuit includes the second analog switch chip U22, and the Enable Pin of this second analog switch chip is connected with described governor circuit, earth terminal is connected with the earth terminal of described loading interfaces.
4. portable power source electricity display control circuit as claimed in claim 2, it is characterized in that, described transmission interface circuit is Universal Asynchronous Receive/dispensing device.
5. portable power source electricity display control circuit as claimed in claim 1, is characterized in that, also include the temperature collection circuit be connected with described governor circuit.
6. portable power source electricity display control circuit as claimed in claim 1, it is characterized in that, described power detection circuit includes the battery voltage detection circuit be connected with described governor circuit.
7. portable power source electricity display control circuit as claimed in claim 6, it is characterized in that, described power detection circuit also includes the discharging current testing circuit and charging current detecting circuit that are connected with described governor circuit respectively.
CN201520174877.2U 2015-03-26 2015-03-26 Portable power source electricity display control circuit Active CN204696708U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520174877.2U CN204696708U (en) 2015-03-26 2015-03-26 Portable power source electricity display control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520174877.2U CN204696708U (en) 2015-03-26 2015-03-26 Portable power source electricity display control circuit

Publications (1)

Publication Number Publication Date
CN204696708U true CN204696708U (en) 2015-10-07

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Application Number Title Priority Date Filing Date
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CN (1) CN204696708U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108051683A (en) * 2017-12-26 2018-05-18 四川福润得数码科技有限责任公司 A kind of load is switched in or out detection circuit and power supply power-supplying circuit and control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108051683A (en) * 2017-12-26 2018-05-18 四川福润得数码科技有限责任公司 A kind of load is switched in or out detection circuit and power supply power-supplying circuit and control method
CN108051683B (en) * 2017-12-26 2020-01-24 四川福润得数码科技有限责任公司 Load connection or disconnection detection circuit, power supply control circuit and control method

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 518000, A building, block 9, garden city digital garden, 1079 Nanhai Road, Guangdong, Shenzhen, Nanshan District

Patentee after: Chipsea Technology (Shenzhen) Co., Ltd.

Address before: 518067 Nanshan District, Shenzhen, Nanhai Avenue, garden city, No. 1079, building A, block, floor 9

Patentee before: Xinhai Science and Technology Co., Ltd., Shenzhen City

CP03 Change of name, title or address