CN204205680U - A kind of charging control circuit and portable electric appts - Google Patents
A kind of charging control circuit and portable electric appts Download PDFInfo
- Publication number
- CN204205680U CN204205680U CN201420738579.7U CN201420738579U CN204205680U CN 204205680 U CN204205680 U CN 204205680U CN 201420738579 U CN201420738579 U CN 201420738579U CN 204205680 U CN204205680 U CN 204205680U
- Authority
- CN
- China
- Prior art keywords
- charging control
- charging
- control circuit
- chip
- chip microcomputer
- Prior art date
- 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
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of charging control circuit, comprises external power supply and device battery, described charging control circuit also comprise circuit for detecting, single-chip microcomputer, motion detection apparatus and charging chip; Described single-chip microcomputer connects described motion detection apparatus and receives the equipment use status signal of described motion detection apparatus generation; Described circuit for detecting receives the charging control signal that described single-chip microcomputer generates, and described charging control signal is transferred to described charging chip, and described charging chip connects described device battery.The invention also discloses a kind of portable electric appts being provided with charging control circuit.The charging control circuit that the utility model proposes can allow according to equipment use state or forbid charging to device battery, stop the potential safety hazard that device battery charging fever expansion brings user, there is cost low, the simple feature of structure, greatly improves the safety and reliability of equipment.
Description
Technical field
The utility model relates to electronic equipment power source technical field, particularly relates to a kind of charging control circuit and has its portable electric appts.
Background technology
Portable electric appts, as worn 3D display etc., becomes the main product that nowadays people competitively pursue gradually.Wear the integrated ultralight display screen of 3D display and gravitational motion checkout gear, the visual angle of different angles can be presented, bring user's perfect vision on the spot in person and experience.
The volume and weight of portable electric appts is one of key index of weighing device performance.So, portable electric appts of the prior art generally can by device battery and other functional module integrated as far as possible with reduction equipment volume.But the contradiction brought is simultaneously, user uses the duration of equipment also in continuous increase.A lot of user, in order to lasting use, often can charge to equipment simultaneously.This is easy to cause device battery temperature overheating, reduce battery and equipment life, even causes device battery dilatancy, there is very large potential safety hazard.
Portable electric appts of the prior art does not arrange corresponding charge protection or controlling functions, there is the defect of poor stability.
Summary of the invention
The utility model provides a kind of charging control circuit and has the portable electric appts of described charging control circuit, by the using state of motion detection apparatus detection equipment, uses during equipment and forbids, to device battery charging, guaranteeing use safety.
The utility model provides a kind of charging control circuit, comprises external power supply and device battery, and described charging control circuit also comprises circuit for detecting, single-chip microcomputer, motion detection apparatus and charging chip; Described single-chip microcomputer connects described motion detection apparatus and receives the equipment use status signal of described motion detection apparatus generation; Described circuit for detecting receives the charging control signal that described single-chip microcomputer generates, and described charging control signal is transferred to described charging chip, and described charging chip connects described device battery.
Further, described charging control circuit also comprises the detecting unit for checkout equipment charged state, and the charging status signal of generation is sent to described single-chip microcomputer by described detecting unit.
Further, the interface that described detecting unit comprises signal output part and mates with external power supply, described signal output part connects described single-chip microcomputer.
Preferably, described interface is Micro USB interface.
Further, the Vcc pin place of described Micro USB interface is provided with series connection divider resistance.
In order to accurately know the using state of equipment, described motion detection apparatus is preferably gyroscope, has gyrostatic transducer or proximity transducer.
Further, the enable input of described charging chip is connected with a resistance, another pole ground connection of described resistance.
Further, described charging chip connects described device battery positive pole.
Preferably, described single-chip microcomputer is STM32F401VE single-chip microcomputer.
The utility model additionally provides a kind of portable electric appts, described portable electric appts comprises above-mentioned charging control circuit, described charging control circuit comprises external power supply and device battery, also comprises circuit for detecting, single-chip microcomputer, motion detection apparatus and charging chip; Described single-chip microcomputer connects described motion detection apparatus and receives the equipment use status signal of described motion detection apparatus generation; Described circuit for detecting receives the charging control signal that described single-chip microcomputer generates, and described charging control signal is transferred to described charging chip, and described charging chip connects described device battery.
Compared with prior art, the utility model has the advantages that, the real-time using state of motion detection apparatus checkout equipment is also transferred to single-chip microcomputer.When the equipment of use, described circuit for detecting receives the charging control signal of described single-chip microcomputer generation and described charging control signal is transferred to described charging chip, control charging chip automatically to forbid, to device battery charging, avoiding the potential safety hazard that device battery fever expansion brings user.The utility model cost is low, structure simple, greatly improves the safety and reliability of equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the theory diagram of a kind of embodiment of the utility model charging control circuit;
Fig. 2 is the circuit connection diagram of single-chip microcomputer in Fig. 1;
Fig. 3 is the circuit connection diagram of detecting unit in Fig. 1;
Fig. 4 is the circuit connection diagram of charging chip in Fig. 1;
Fig. 5 is the circuit connection diagram of motion detection apparatus in Fig. 1.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the charging control circuit described in the present embodiment comprises external power supply 1 and single-chip microcomputer 3.The single-chip microcomputer STM32F401VEH6TR that described single-chip microcomputer 3 is shown in Figure 2.The integrated chip that described charging chip 5 can have charging/discharging function with one realizes, discharge and recharge integrated chip BQ14295 shown in Figure 4.Compare traditional portable electric appts charging circuit, the present embodiment is also provided with circuit for detecting 2 and motion detection apparatus 4 in the charge circuit.See Fig. 5, motion detection apparatus 4 can realize with having gyrostatic nine axle sensors.Described motion detection apparatus 4 is connected with single-chip microcomputer 3, and the equipment use state information collected is changed into level signal transfers to single-chip microcomputer 3.Single-chip microcomputer 3 receiving equipment using state signal also generates charging control signal and exports described circuit for detecting 2 to, described circuit for detecting 2 receives the charging control signal that single-chip microcomputer 3 generates, and described charging control signal is transferred to charging chip 5, allow or forbid that external power supply charges to device battery 6.Wherein, circuit for detecting 2, control unit 3, motion detection apparatus 4, charging chip 5 and device battery 6 are all arranged on device interior.
The circuit for detecting 2 of the present embodiment comprises a detecting unit, and whether described detecting unit is used for detecting has external power supply to charge to device battery 6.As shown in Figure 3, the detecting unit in the present embodiment comprises the Micro USB interface of mating with external power supply.During normal use, D+ and the D-pin of Micro USB interface is unsettled.The Vcc pin place of interface is provided with divider resistance R54 and R57 of series connection, draws signal output part POWER_IN_DET between divider resistance R54 and R57, and described signal output part POWER_IN_DET connects single-chip microcomputer 3.By arranging divider resistance, the output voltage of described signal output part POWER_IN_DET is reduced to 5V × R57/(R54+R57), namely singlechip chip acquiescence high level scope, avoids the I/O port of the too high destruction singlechip chip of input voltage.During work, once there be external power supply to insert, namely described signal output part POWER_IN_DET exports a high level signal to single-chip microcomputer 3.
Be illustrated in figure 4 the circuit connection diagram of charging chip 5 in the present embodiment, wherein pin CHARGE_EN is the enable input of charging chip 5.Charging chip 5 connection device anode BT+.The enable input of described charging chip 5 is connected with single-chip microcomputer 3 by circuit for detecting 2.As a part for circuit for detecting 2, be also connected with a resistance R4 at the enable input end of charging chip 5, another pole ground connection of resistance R4.The enable input acquiescence Low level effective of described charging chip 5.During equipment shutdown, due to the drop-down effect of resistance R4, what make charging chip 5 is in state of activation, once the signal input part of detecting unit is to single-chip microcomputer input high level signal, namely external power supply starts to charge to device battery 6.
During device power-up, the enable input CHARGE_EN of charging chip 5 is set to high level by circuit for detecting 2 by single-chip microcomputer 3, and charging chip 5 is in illegal state, and charge function is closed.Now, even if the signal input part of detecting unit is to single-chip microcomputer 3 input high level signal, external power supply also cannot charge to device battery 6.But, if the level signal display device that simultaneously nine axle sensors export single-chip microcomputer to is not in using state, circuit for detecting 2 makes the enable input CHARGE_EN of charging chip 5 again be set to low level by the drop-down effect of resistance R4, activating charge chip 5, then external power supply 1 starts to charge to device battery 6.
Adopt the charging control circuit that the present embodiment provides, single-chip microcomputer can by the real-time using state of nine axle sensor equipments, and by circuit for detecting, the charging control signal that single-chip microcomputer generates is delivered to the enable control end of charging chip, allow or forbid that charging chip is to equipment charge.Stop the potential safety hazard that device battery charging fever expansion brings user.
Based on the charging control circuit of the present embodiment, the present embodiment provides a kind of portable electric appts simultaneously, described portable electric appts is provided with the charging control circuit of above-described embodiment, and its concrete structure referring to the detailed description of Fig. 1 to Fig. 5 and above-described embodiment, can not repeat them here.The portable electric appts being provided with described charging control circuit has corresponding technique effect.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a charging control circuit, comprises external power supply and device battery, it is characterized in that, described charging control circuit also comprises circuit for detecting, single-chip microcomputer, motion detection apparatus and charging chip; Described single-chip microcomputer connects described motion detection apparatus and receives the equipment use status signal of described motion detection apparatus generation; Described circuit for detecting receives the charging control signal that described single-chip microcomputer generates, and described charging control signal is transferred to described charging chip, and described charging chip connects described device battery.
2. charging control circuit according to claim 1, is characterized in that, described circuit for detecting comprises the detecting unit for detecting charged state, and the charging status signal of generation is sent to described single-chip microcomputer by described detecting unit.
3. charging control circuit according to claim 2, is characterized in that, the interface that described detecting unit comprises signal output part and mates with external power supply, and described signal output part connects described single-chip microcomputer.
4. charging control circuit according to claim 3, is characterized in that, described interface is Micro USB interface.
5. charging control circuit according to claim 4, is characterized in that, the Vcc pin place of described Micro USB interface is provided with series connection divider resistance.
6. charging control circuit according to claim 1, is characterized in that, described motion detection apparatus is gyroscope, has gyrostatic transducer or proximity transducer.
7. charging control circuit according to claim 1, is characterized in that, the enable input of described charging chip is connected with a resistance, another pole ground connection of described resistance.
8. charging control circuit according to claim 1, is characterized in that, described charging chip connects described device battery positive pole.
9. the charging control circuit according to any one of claim 1-8, is characterized in that, described single-chip microcomputer is STM32F401VE single-chip microcomputer.
10. a portable electric appts, is characterized in that, be provided with as arbitrary in claim 1-9 as described in charging control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738579.7U CN204205680U (en) | 2014-12-02 | 2014-12-02 | A kind of charging control circuit and portable electric appts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738579.7U CN204205680U (en) | 2014-12-02 | 2014-12-02 | A kind of charging control circuit and portable electric appts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204205680U true CN204205680U (en) | 2015-03-11 |
Family
ID=52663596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420738579.7U Expired - Fee Related CN204205680U (en) | 2014-12-02 | 2014-12-02 | A kind of charging control circuit and portable electric appts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204205680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086678A (en) * | 2017-05-05 | 2017-08-22 | 广东小天才科技有限公司 | A kind of wireless charging method and device |
-
2014
- 2014-12-02 CN CN201420738579.7U patent/CN204205680U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086678A (en) * | 2017-05-05 | 2017-08-22 | 广东小天才科技有限公司 | A kind of wireless charging method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20160099608A1 (en) | Power adapter with built-in battery and power storage and supply method thereof | |
| US9104396B2 (en) | Electronic apparatus, charging control device, and charging control method | |
| JP2013198262A5 (en) | ||
| WO2019174415A1 (en) | Charging circuit and electronic cigarette | |
| CN104079043A (en) | Charge control system capable of realizing switching among multiple charge modes | |
| US20140091752A1 (en) | USB Charging System | |
| CN104124732A (en) | USB (Universal Serial Bus) interface based universal wireless power supply circuit for mobile terminal and power supply method thereof | |
| CN204205680U (en) | A kind of charging control circuit and portable electric appts | |
| KR20160040961A (en) | Electronic apparatus and method for charging and discharging in electronic apparatus | |
| KR200470159Y1 (en) | Secondary battery with a charging data cable | |
| CN104377783A (en) | Charging control circuit and charging method | |
| CN103701165B (en) | A kind of method activating portable power source and device | |
| CN104300628A (en) | Portable power source displaying information of portable power source through intelligent device and method thereof | |
| TWI457943B (en) | Power system for solid state drive | |
| CN108832953A (en) | A kind of wisdom bracelet monitoring limb activity information | |
| CN203660617U (en) | Charging wire used for USB single-port input multiport output | |
| CN206412794U (en) | A kind of power supply switch circuit and virtual reality device | |
| CN205790822U (en) | A kind of charging wire | |
| CN104467111A (en) | Wallet | |
| CN106786902A (en) | A kind of power supply switch circuit and virtual reality device | |
| CN204145018U (en) | Use the portable power source of smart machine display portable power source information | |
| TWM575555U (en) | Power control device | |
| CN219535674U (en) | Wireless charging circuit based on 8 bit singlechip | |
| CN208090366U (en) | It can charging/discharging type flashlight | |
| TW201435967A (en) | System and method for charging and discharging electronic device |
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: 20150311 Termination date: 20211202 |