CN106300515B - Mobile terminal - Google Patents
Mobile terminal Download PDFInfo
- Publication number
- CN106300515B CN106300515B CN201610725293.9A CN201610725293A CN106300515B CN 106300515 B CN106300515 B CN 106300515B CN 201610725293 A CN201610725293 A CN 201610725293A CN 106300515 B CN106300515 B CN 106300515B
- Authority
- CN
- China
- Prior art keywords
- circuit board
- charging
- mobile terminal
- charging chip
- chip
- 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.)
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- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000007726 management method Methods 0.000 description 13
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H02J7/0091—
-
- H02J7/025—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of mobile terminal, comprising: first circuit board；First charging chip, is set on first circuit board；Power management chip is set on first circuit board；Second circuit board；Second charging chip, is set on second circuit board, and is connected in parallel with the first charging chip；Temperature-measuring part is set on second circuit board, and is connect with the power management chip.Above-mentioned mobile terminal can carry out real-time monitoring and control to the temperature of second circuit board, improve the performance of mobile terminal.
Description
Technical field
The present invention relates to mobile communication field more particularly to a kind of mobile terminals.
Background technique
As the battery capacity of mobile terminal is increasing, the charging time of battery is also increasingly longer, and the prior art uses
Double charging chips carry out fast charge to battery, can effectively shorten charging time of battery.
The charging chip is generally all disposed within the mainboard end of mobile terminal, due in charging process, charging chip temperature
It can increase, cause the temperature rise of mainboard bigger, for the charging scheme of double charging chips, the temperature rise of mainboard is bigger.
At present the heat dissipating method of mainstream be using water cooling heat-conducting copper pipe technology, by heat by copper pipe lead elsewhere into
Row heat dissipation, but higher cost, and volume production wind direction is larger.
For the scheme that double charging chips charge, one of charging chip can be arranged on platelet, from
The heat dissipation of body can be also transferred on platelet from mainboard end, to greatly reduce the temperature rise of mainboard.
Due to being usually provided with high power device and charging chip on mainboard, the prior art would generally be to the temperature of mainboard
It measures, with implementing monitoring mainboard temperature and control effectively.
Small plate temperature using the mobile terminal of above-mentioned double charging chip schemes also can obviously rise, the small excessively high meeting of plate temperature
The working performance for influencing other devices on platelet, so that the performance of mobile terminal be made to be affected.
It is therefore desirable to which the small plate temperature to mobile terminal is monitored and controls, to improve the performance of mobile terminal.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of mobile terminals, are shortening the charging time, are reducing temperature rise
Meanwhile improving the performance of mobile terminal.
To solve the above-mentioned problems, the present invention provides a kind of mobile terminals, comprising: first circuit board；First charging core
Piece is set on first circuit board；Power management chip is set on first circuit board；Second circuit board；Second charging core
Piece is set on second circuit board, and is connected in parallel with the first charging chip；Temperature-measuring part is set on second circuit board, and
It is connect with the power management chip.
Optionally, the temperature-measuring part is thermistor.
Optionally, further includes: the temperature-measuring part ground connection.
Optionally, the minimum spacing between the temperature-measuring part and the second charging chip is 8mm~10mm.
Optionally, further includes: the shielding case being set on second circuit board, shape between the shielding case and second circuit board
At confined space, second charging chip is located in the confined space.
Optionally, the Shielding Case grounding.
Optionally, the material of the shielding case is metal.
Optionally, cell input terminal, first charging chip and the second charging are additionally provided on the first circuit board
The output end of chip is connect with the cell input terminal.
Optionally, power input, first charging chip and the second charging core are provided on the second circuit board
The input terminal of piece is connect with the power input.
Optionally, antenna is additionally provided on the second circuit board.
The first charging chip and the second charging chip of mobile terminal of the invention are located at first circuit board and second
On circuit board, so as to improve radiating efficiency, and temperature-measuring part is set on the second circuit board, the second electricity can be monitored in real time
The temperature of road plate.
It further, can be to avoid being produced in the second charging chip charging process so the second charging chip is surrounded by shielding case
Raw electromagnetic field leaks, and impacts to antenna sensitivity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the mobile terminal of the embodiment of the invention；
Fig. 2 is the structural schematic diagram of the temperature measurement circuit of the embodiment of the invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the specific embodiment of mobile terminal provided by the invention.
Referring to FIG. 1, being the structural schematic diagram of the mobile terminal.
The mobile terminal includes: first circuit board 100；First charging chip 101, is set to 100 on first circuit board；
Power management chip 102 is set on first circuit board 100；Second circuit board 200；Second charging chip 201 is set to
On two circuit boards 200, and it is connected in parallel with the first charging chip 101；Temperature-measuring part 205 is set on second circuit board 200,
And it is connect with the power management chip 102.
As the specific embodiment of the present invention, the first circuit board 100 be mobile terminal mainboard, area compared with
Greatly, central processor core, sensor, memory, camera, earphone interface etc. can be set on the first circuit board 100
Various components.The first circuit board 100 is usually located at the top of mobile terminal, specifically, can be wanted according to practical layout
It asks and is adjusted.
The second circuit board 200 is platelet, and area is smaller, is usually provided with antenna on the second circuit board 200
204, for receiving wireless or movable signal.The second circuit board 200 is usually located at the bottom of mobile terminal, specifically, can
To require to be adjusted according to practical layout.
First charging chip 101 is used as main charging chip, can be constantly in working condition during the charging process；It is described
Second charging chip 102 only works under fast charge mode as secondary charging chip.First charging chip 101 and second fills
Electrical chip 102 can be the charging chip of identical or different model.As the specific embodiment of the present invention, described first
Charging chip 101 and the second charging chip 102 are the charging chip of same model.
In other specific embodiments of the invention, the quantity of second charging chip 102 can also be two or
Two or more is connected in parallel between different second charging chips 102, can be further improved charge efficiency.
Cell input terminal 103 is additionally provided on the first circuit board 100, first charging chip 101 and second are filled
The output end of electrical chip 201 is connect with the cell input terminal 103.When the cell input terminal 103 is to battery charging, as
The inflow end of electric current, to charge the battery.
The defeated of the output end of second charging chip 201 and cell input terminal 103 can be connected by flexible circuit board
Enter end, since second charging chip 201 is larger at a distance from the first mainboard 100, second charging chip 201 and battery
The distance between input terminal 103 is larger, and the connection between 201 output end of the second charging chip and cell input terminal 103 is caused to hinder
Resist it is larger, if the impedance is excessive, will lead to the second charging chip 201 output charging current it is smaller, influence charge efficiency.
As the specific embodiment of the present invention, when the charging current of second charging chip 201 is 2A, charging voltage is
When 4.6V, the connection impedance between second charging chip 201 and cell input terminal 103 can be set to 50~80 milliohms left side
The right side specifically can be 62 milliohms.
The battery can be set between first circuit board 100 and second circuit board 200, specifically, can be according to reality
Border layout requirements are adjusted.
Power input 203, first charging chip 101 and the second charging are provided on the second circuit board 200
The output end of chip 201 is connect with the power input 203, and the power input 203 is for connecting charge power supply.As
One specific embodiment, the power input 203 can be powered by USB interface.
Power management chip 102 is additionally provided on the first circuit board 100.The power management chip 102 can be visited
The presence for surveying charge power supply, then controls first charging chip 101 and the second charging chip 102 charges the battery,
And monitor the electric current in charging process and voltage etc., over-voltage, overcurrent, excessively mild short-circuit protection etc. are carried out, avoids making battery
At damage.The power management chip 102 connect (Fig. 1 with first charging chip 101 and the second charging chip 201 respectively
In be not shown), so that first charging chip 101 and the second charging chip 201 are managed and are controlled.
It is additionally provided with temperature-measuring part 205 on the second circuit board 200, is carried out for the temperature to second circuit board 200
Measurement.As the specific embodiment of the present invention, the temperature-measuring part 205 is thermistor, can be positive temperature coefficient
Thermistor (PTC) or negative tempperature coefficient thermistor (NTC), the resistance of the temperature-measuring part 204 change with temperature.
The temperature-measuring part 205 is connect with power management chip 102.Specifically referring to FIG. 2, being the temperature-measuring part
The temperature measurement circuit schematic diagram of 204 accesses.Wherein, the temperature-measuring part 204 is thermistor R1, one end of the thermistor R1
Ground connection, one end of the other end connection divider resistance R2 of thermistor R1, the divider resistance R2 other end connect voltage end
206；The connecting pin of the thermistor R1 and divider resistance R2 is connected to the output 207.Mono- section of capacitor C1 ground connection, one section of connection
To the connecting pin of the thermistor R1 and divider resistance R2, it is filtered for the output voltage to thermistor R1.
In a specific embodiment of the invention, the divider resistance R2 and capacitor C1 are respectively positioned on first circuit board 100.Tool
Body, the divider resistance R2 and capacitor C1 can integrate in power management chip 102.
The resistance value of the thermistor R1 with the second circuit board 200 at place temperature change so that thermistor
The output voltage at the both ends R1 changes.The output end 207 can connect to the analog-to-digital conversion list in power management chip 102
Analog voltage signal is converted into digital signal and received by power management chip 102, by power management chip 102 to described by member
The output signal of output end 207 carries out real-time monitoring, by the output signal of output end 207 and the relationship of temperature, obtains the second electricity
The temperature information of road plate 200.The power management chip 102 can be to filling according to the temperature information of the second circuit board 200
Electric process is controlled, and avoids the temperature of second circuit board 200 excessively high.
In the specific embodiment of the present invention, it is also equipped on the first circuit board 100 and is connected to power supply pipe
102 temperature-measuring part of chip is managed, is monitored in real time for the temperature to first circuit board 100.
Minimum spacing between the temperature-measuring part 205 and the second charging chip 201 is 8mm~10mm.If the thermometric
The distance between component 205 and the second charging chip 201 are too small, and the temperature of measurement receives the temperature shadow of the second charging chip 201
It rings, it is larger with the temperature deviation of second circuit board 200.
In the specific embodiment of the present invention, shielding case 202 is additionally provided on the second circuit board 200.Institute
It states and forms confined space between shielding case 202 and second circuit board 200, second charging chip 201 is located at the confined air
In, second charging chip 201 is represented by dashed line in Fig. 1.The shielding case 202 can be fixed on institute using welding manner
It states on second circuit board.The electromagnetic radiation that the confined space can generate to avoid the second charging chip 201 leaks out, to antenna
204 reception signal interferes, and impacts to the sensitivity of antenna 204.The shielding case 202 and the second charging chip it
Between can have certain gap, second charging chip 201 can also be close to.
The shielding case 202 is grounded, since second charging chip 201 is easy to generate parasitism between shielding case 202
Capacitor, therefore shielding case 202 is grounded to the influence that can eliminate family planning capacitor, to eliminate common mode interference.
The material of the shielding case 202 is metal, the metal material that preferably can be easy to weld for tinplate, foreign white copper etc.
Material.Since the shielding case 202 is metal, heat transfer efficiency with higher, second charging chip 201 is during the work time
The heat of generation, a part can be radiated by the shielding case 202, so that whole heat dissipation area is improved, into one
Step reduces the whole heating of mobile terminal.
In conclusion the first charging chip 101 and the second charging chip 201 of the mobile terminal are located at the first electricity
On road plate 100 and second circuit board 200, so as to improve radiating efficiency, also, thermometric is provided on second circuit board 200
Component can carry out real-time monitoring and control to the temperature of second circuit board 200, improve the performance of mobile terminal.And second fills
Electrical chip 201 is surrounded by shielding case 202, can be to avoid the electromagnetic field generated in 201 charging process of the second charging chip to antenna
204 sensitivity impacts.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (9)
1. a kind of mobile terminal characterized by comprising
First circuit board；
First charging chip, is set on first circuit board；
Power management chip is set on first circuit board；
Second circuit board；
Second charging chip, is set on second circuit board, and is connected in parallel with the first charging chip；
Temperature-measuring part is set on second circuit board, and is connect with the power management chip；
The shielding case being set on second circuit board, forms confined space between the shielding case and second circuit board, and described
Two charging chips are located in the confined space, and second charging chip is surrounded by shielding case, can be avoided the second charging core
The electromagnetic field generated in piece charging process leaks.
2. mobile terminal according to claim 1, which is characterized in that the temperature-measuring part is thermistor.
3. mobile terminal according to claim 1, which is characterized in that further include: the temperature-measuring part ground connection.
4. mobile terminal according to claim 1 or 2, which is characterized in that the temperature-measuring part and the second charging chip it
Between minimum spacing be 8mm~10mm.
5. mobile terminal according to claim 1, which is characterized in that the Shielding Case grounding.
6. mobile terminal according to claim 1, which is characterized in that the material of the shielding case is metal.
7. mobile terminal according to claim 1, which is characterized in that be additionally provided with battery input on the first circuit board
The output end of end, first charging chip and the second charging chip is connect with the cell input terminal.
8. mobile terminal according to claim 7, which is characterized in that be provided with power input on the second circuit board
The input terminal of end, first charging chip and the second charging chip is connect with the power input.
9. mobile terminal according to claim 1, which is characterized in that be additionally provided with antenna on the second circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725293.9A CN106300515B (en) | 2016-08-25 | 2016-08-25 | Mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725293.9A CN106300515B (en) | 2016-08-25 | 2016-08-25 | Mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106300515A CN106300515A (en) | 2017-01-04 |
| CN106300515B true CN106300515B (en) | 2019-04-26 |
Family
ID=57615288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610725293.9A Active CN106300515B (en) | 2016-08-25 | 2016-08-25 | Mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106300515B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112311037B (en) * | 2019-07-31 | 2022-05-06 | 北京小米移动软件有限公司 | Terminal device |
| CN113394471B (en) * | 2020-03-13 | 2023-05-02 | 北京小米移动软件有限公司 | Charging method and device, electronic equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202368A (en) * | 2001-02-14 | 2008-06-18 | 索尼公司 | Charging/discharging apparatus and method for supplying power to the same |
| CN101562957A (en) * | 2008-04-16 | 2009-10-21 | 台达电子工业股份有限公司 | Buffering subassembly and electronic device using same |
| CN104505888A (en) * | 2014-12-24 | 2015-04-08 | 广东欧珀移动通信有限公司 | Mobile terminal and charging device |
| CN105305523A (en) * | 2014-12-25 | 2016-02-03 | 维沃移动通信有限公司 | Mobile terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6661203B2 (en) * | 2001-11-12 | 2003-12-09 | Hewlett-Packard Development Company, L.P. | Battery charging and discharging system optimized for high temperature environments |
| JP5309641B2 (en) * | 2008-03-24 | 2013-10-09 | ミツミ電機株式会社 | Semiconductor integrated circuit for charge control |
-
2016
- 2016-08-25 CN CN201610725293.9A patent/CN106300515B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202368A (en) * | 2001-02-14 | 2008-06-18 | 索尼公司 | Charging/discharging apparatus and method for supplying power to the same |
| CN101562957A (en) * | 2008-04-16 | 2009-10-21 | 台达电子工业股份有限公司 | Buffering subassembly and electronic device using same |
| CN104505888A (en) * | 2014-12-24 | 2015-04-08 | 广东欧珀移动通信有限公司 | Mobile terminal and charging device |
| CN105305523A (en) * | 2014-12-25 | 2016-02-03 | 维沃移动通信有限公司 | Mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106300515A (en) | 2017-01-04 |
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