CN108271312A - Circuit board and intelligent terminal - Google Patents
Circuit board and intelligent terminal Download PDFInfo
- Publication number
- CN108271312A CN108271312A CN201810160659.1A CN201810160659A CN108271312A CN 108271312 A CN108271312 A CN 108271312A CN 201810160659 A CN201810160659 A CN 201810160659A CN 108271312 A CN108271312 A CN 108271312A
- Authority
- CN
- China
- Prior art keywords
- power cord
- circuit board
- source line
- management chip
- intelligent terminal
- 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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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0228—Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors
Abstract
The present invention provides a kind of circuit board and intelligent terminal, wherein, in the circuit board, connect the first power cord of power management chip and battery connector, it is parallel with the second source line of connection power management chip and the charging port, and interval is less than preset distance, so that, the magnetic field that electric current in first power cord and second source line generates is constant, so that calibration function of the geomagnetic sensor when devices are only by starting, the influence in the magnetic field that electric current generates in power cord can be overcome, without other detections and amendment circuit in circuit board, save cost, and interference source has been inherently eliminated it.
Description
The application is that the Chinese invention of on 08 28th, 2015 entitled " circuit board and the intelligent terminals " proposed is special
The divisional application of profit application 201510541931.7.
Technical field
The invention belongs to field of circuit boards, more particularly, to a kind of circuit board and intelligent terminal.
Background technology
At present, intelligent terminal is widely used in life, and function is also more and more, such as many products now
All with gyroscope, accelerometer, geomagnetic sensor, ambient light sensor, barometer etc..As intelligent terminal function is more and more
While, the power consumption of intelligent terminal is also more come higher.In order to reduce shadow of the frequent charge due to intelligent terminal to user as possible
It rings, now, the charging time of intelligent terminal is shorter and shorter, and corresponding charging current is increasing, and electric current can generate magnetic field, greatly
Charging current generate magnetic field it is stronger, to the bigger of geomagnetic sensor equimagnetic field sensitive device.
At present, in order to solve influence of the charging wire to geomagnetic sensor in intelligent terminal, intelligent terminal setting detection and
Circuit is corrected, for detecting the size of current for flowing into battery, and according to the three axis initial data and electric current of crawl geomagnetic sensor
Relationship, the initial data that geomagnetic sensor detects is corrected accordingly.
But setting detection and amendment circuit in intelligent terminal, cost is larger, and since hardware circuit has centainly
Response time, detection and correct circuit, it is difficult to the magnetic field generated to instantaneous large-current is effectively corrected, and intelligent terminal
Very big charging current is just had on charging transient charging wire, therefore, existing detection and amendment circuit, it is difficult to thoroughly solve intelligence
It can influence of the terminal charge electric current to geomagnetic sensor.
Invention content
The present invention provides a kind of circuit board and intelligent terminal, for solving in the prior art, inspection to be set in intelligent terminal
Circuit is surveyed and corrects, cost is larger, and is difficult thoroughly to solve the problems, such as that intelligent terminal charging current influences geomagnetic sensor.
One aspect of the present invention provides a kind of circuit board, including：Power management chip, battery connector and charging port；
The power management chip is connected with battery connector by the first power cord；
The power management chip is connected with the charging port by second source line；
First power cord is parallel with the second source line, and is spaced and is less than preset distance.
In a kind of possible way of realization of foregoing circuit plate, the circuit board includes at least two wiring layer；
First power cord is from the second source line respectively in different wiring layers, and the second source line is described
The part projection of wiring layer where first power cord, overlaps with first power cord.
In the alternatively possible way of realization of foregoing circuit plate, the circuit board includes at least two wiring layer；
First power cord is with the second source line in identical wiring layer.
In another possible way of realization of foregoing circuit plate, the preset distance is 0.8mm.
In the alternatively possible way of realization of foregoing circuit plate, circuit board further includes：Geomagnetic sensor；
The geomagnetic sensor is arranged on the region between the power management chip and battery connector.
Another aspect of the present invention provides a kind of intelligent terminal, including as above any circuit board.
Circuit board and intelligent terminal provided by the invention in the circuit board, connect power management chip and battery connector
The first power cord, it is parallel with the second source line of connection power management chip and the charging port, and be spaced be less than it is default
Distance so that, the magnetic field that electric current in the first power cord and second source line generates is constant so that the devices such as geomagnetic sensor
Calibration function when only by starting, so that it may overcome the influence in the magnetic field that electric current generates in power cord, it need not be other in circuit board
Detection and amendment circuit, save cost, and be inherently eliminated interference source.
Description of the drawings
Fig. 1 is the structure diagram of a kind of circuit board that the embodiment of the present invention one provides；
Fig. 2 is the sectional view of another circuit board provided by Embodiment 2 of the present invention；
Fig. 3 is the vertical view of another circuit board that the embodiment of the present invention three provides.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described.
In various embodiments of the present invention, mainly in the prior art, setting on circuit boards detects and corrects circuit, to solve
The method that certainly intelligent terminal charging current influences geomagnetic sensor, cost is bigger, and is difficult thoroughly to solve intelligent terminal
The problem of charging current influences geomagnetic sensor, by rationally setting power management chip, battery in intelligent terminal circuit board
The position of connector and charging port so that the first power cord of connection power management chip and battery connector, with connecting electricity
Source control chip is parallel with the second source line of charging port so that the electricity in electric current and second source line in the first power cord
Stream, the magnetic field generated at any time is constant, so as to which the influence to geomagnetic sensor is stablized, and since geomagnetic sensor is starting
Moment can be calibrated automatically, if external magnetic field is constant, then in use, just need not detect the variation of external magnetic field simultaneously
It is corrected in real time, and then detection can be saved and correct circuit, that is, save cost, and fundamentally solve charging current
Influence to geomagnetic sensor.
Fig. 1 is the structure diagram of a kind of circuit board that the embodiment of the present invention one provides.As shown in Figure 1, the circuit board, packet
It includes：Power management chip 1, battery connector 2 and charging port 3.
Wherein, the power management chip 1 and battery connector 2 are connected by the first power cord 4；The power management core
Piece 1 and the charging port 3 pass through second source line 5；First power cord 4 is parallel with the second source line 5, and is spaced
Less than preset distance.
Wherein, power management chip by the electricity exported in battery connector or the electricity inputted from charging port, is converted into intelligence
After the electricity that energy terminal system needs, export and used to intelligent terminal system.First power cord and second source line are intelligent terminal
The middle power cord that can flow through high current.
Assuming that the electricity consumption electric current of intelligent terminal system is I1, the electric current on the first power cord is I2, the electricity on second source line
It flows for I3, since electric current is vector, if regulation I1Current direction be：It is just I from power management chip outflow2Electric current side
Xiang Wei：During battery connector → power management chip, for just, power management chip → battery connector is negative, I3It can only be by filling
Electric port → power management chip, we provide the direction for just.
When intelligent terminal battery is powered for intelligent terminal system, the electric current I in the first power cord2Direction be from battery
Connector → power management chip, as just, and I2=I1；When intelligent terminal charges, the electric current I on second source line 53It deposits
In following three kinds of situations：
1), work as I3>I1When, I2Current direction be by power management chip → battery connector, be negative.I.e. at this point, flowing through
The electric current of second source line still has residue in addition to being consumed for intelligent terminal system, for charging for intelligent terminal battery.At this time
Electric current on each power cord meets the relationship shown in formula (1)：
2), work as I3=I1When, at this point, I2Size for 0, the electric current for flowing through second source line is just completely used for intelligent end
End system consumes.The size of current on each power cord still meets the relationship shown in formula (2) at this time：
Wherein, I2Equal to 0.
3), work as I3Less than I1When, I2Current direction be：Battery connector → power management chip.At this point, flow through second
The electric current of power cord is less than the electric current of system consumption, and also needs to battery discharge, is used for providing system, at this time each power supply
Size of current on line meets the relationship shown in formula (3)：
Situation in above-mentioned 3 can be unified for：And in guide for use needle, the power consumption I of system1Substantially
It is consistent.Therefore,And be also it is changeless.According to Ampère circuital theorem it is found that around electrical conductor
Magnetic field it is directly proportional to by the electric current of the conductor, and the magnetic field at certain point is generated at this for each power cord in space
The vector sum in magnetic field, and with first carrying out vector superposed by electric current and then being gone out according to Ampere circuit theorem in the point
Magnetic field intensity is identical, thus when the electric current in the first power cord and second source line and it is constant when, by the first power cord and second
The electromagnetic field size that power cord generates jointly is constant.
In the present embodiment, the first power cord is parallel with second source line, and is spaced and is less than preset distance, therefore the first electricity
The magnetic field that electric current in source line and second source line generates respectively, the electric current and second source that can be equivalent in the first power cord
Current phasor in line is with after, the magnetic field of generation, and the magnetic field, in debugging circuit board, you can by the school for debugging compass
Quasi- function, to offset the influence of the external magnetic field.So that intelligent terminal when in use, opens compass applications, compass every time
Only by calibration, the interference in ambient outside magnetic field is just eliminated, without other detections and amendment circuit, it is possible to completely eliminate electricity
Influence of the source line to geomagnetic sensor.
Circuit board provided in this embodiment connects the first power cord of power management chip and battery connector, with connecting
Power management chip is parallel with the second source line of the charging port, and is spaced and is less than preset distance so that, the first power supply
The magnetic field that electric current in line and second source line generates is constant so that calibration work(of the geomagnetic sensor when devices are only by starting
It can, so that it may overcome the influence in the magnetic field that electric current generates in power cord, detect and correct circuit without others in circuit board, save
Cost, and it has been inherently eliminated interference source.
In addition, since circuit board is usually multi-layer board, that is, include at least a wiring layer, then the first power cord and second source
Line is parallel, can be realized by two ways as shown in Figures 2 and 3, and Fig. 2 is that the embodiment of the present invention two carries common another kind electricity
The sectional view of road plate.Fig. 3 is the vertical view of another circuit board that the embodiment of the present invention three provides.
As shown in Fig. 2, first power cord is electric in different wiring layer, described second respectively from the second source line
Source line is projected in the part of the wiring layer where first power cord, is overlapped with first power cord.
For example, if circuit board includes 3 layers of wiring layer, and the first power cord can be in the first wiring layer, then second is electric
Source line can be second or third wiring layer.At this time the thickness of the distance between the first power cord and second source line and wiring layer and
Layer where respectively is related, if the first power cord in the first wiring layer, second source line in the second wiring layer, then the first power cord and
Thickness of the distance for a wiring layer between second source line, for example be 0.2 millimeter (mm).
It should be noted that in circuit board section figure shown in Fig. 2, power management chip 1, battery connector 2 and fill
The position of electric port 3 and the number of plies through circuit board, can be arranged as required to, are only schematically illustrated in Fig. 2.Alternatively, such as
Shown in Fig. 3, the circuit board includes at least two wiring layer；
First power cord and the second source line are spaced in identical wiring layer and are less than preset distance.
Wherein, preset distance can be 0.5mm, 0.6mm or 0.8mm etc., and the present embodiment does not limit this.
Further, according to above-mentioned analysis it is found that the vector sum generation of electric current in the first power cord and second source line
Electromagnetic field is constant, and by Fig. 2 or Fig. 3 it is found that the length of second source line is different from the length of the first power cord, in battery connection
In device and the direct region of charging port, there is only second source lines, i.e., the electromagnetic field in the region can change, therefore be
Ensure the constant of the electromagnetic field of the location of geomagnetic sensor, in the present embodiment, by geomagnetic sensor, be arranged on the electricity
Region between source control chip and battery connector.And according to Ampere theorem it is found that any point magnetic field around conducting wire
Geomagnetic sensor, can also be arranged far from the first power cord and second as possible by the distance dependent of intensity and the distance of wire
The position of power cord.
Circuit board provided in this embodiment connects the first power cord of power management chip and battery connector, with connecting
Power management chip is parallel with the second source line of the charging port, and is spaced and is less than preset distance so that, the first power supply
The magnetic field that electric current in line and second source line generates is constant so that calibration work(of the geomagnetic sensor when devices are only by starting
It can, so that it may overcome the influence in the magnetic field that electric current generates in power cord, detect and correct circuit without others in circuit board, save
Cost, and it has been inherently eliminated interference source.Also, the first power cord and second source line may be provided at identical wiring
Layer, can also be in different wiring layers so that the making of circuit board is more flexible.
Based on the circuit board that the various embodiments described above provide, the present invention provides a kind of intelligent terminal again on the other hand, including
As above the circuit board described in any embodiment.
Wherein, the structure of circuit board, each section connection relation and function can refer to the detailed description of above-described embodiment, herein
It repeats no more.
Intelligent terminal provided in this embodiment in the circuit board of use, connects power management chip and battery connector
First power cord, it is parallel with the second source line of connection power management chip and the charging port, and be spaced less than preset
Distance so that, the magnetic field that the electric current in the first power cord and second source line generates is constant so that the devices such as geomagnetic sensor are only
Calibration function during by starting, so that it may overcome the influence in the magnetic field that electric current generates in power cord, be examined in circuit board without other
Circuit is surveyed and corrected, saves cost, and be inherently eliminated interference source.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and aforementioned program can be stored in a computer read/write memory medium, the program
When being executed, step including the steps of the foregoing method embodiments is performed；And aforementioned storage medium includes：ROM, RAM, magnetic disc or light
The various media that can store program code such as disk.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of circuit board, which is characterized in that including：Power management chip, battery connector, charging port and earth magnetism sensing
Device；
The power management chip is connected with battery connector by the first power cord；
The power management chip is connected with the charging port by second source line；
First power cord is parallel with the second source line, so that the electric current in first power cord and second source line
It is constant in the magnetic field that the location of described geomagnetic sensor generates, and between first power cord and the second source line
Every less than preset distance；
The length of the second source line is different from the length of first power cord, in the battery connector and the charging
In the direct region in port, there is only the second source lines.
2. circuit board according to claim 1, which is characterized in that the circuit board includes at least two wiring layer；
First power cord is from the second source line respectively in different wiring layers, and the second source line is described first
The part projection of wiring layer where power cord, overlaps with first power cord.
3. circuit board according to claim 1, which is characterized in that the circuit board includes at least two wiring layer；
First power cord is with the second source line in identical wiring layer.
4. according to any circuit boards of claim 1-3, which is characterized in that the preset distance is 0.8mm.
5. circuit board according to claim 4, which is characterized in that
The geomagnetic sensor is arranged on the region between the power management chip and battery connector.
6. a kind of intelligent terminal, which is characterized in that including the circuit board as described in claim 1-5 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810160659.1A CN108271312A (en) | 2015-08-28 | 2015-08-28 | Circuit board and intelligent terminal |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541931.7A CN105163480B (en) | 2015-08-28 | 2015-08-28 | circuit board and intelligent terminal |
| CN201810160659.1A CN108271312A (en) | 2015-08-28 | 2015-08-28 | Circuit board and intelligent terminal |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510541931.7A Division CN105163480B (en) | 2015-08-28 | 2015-08-28 | circuit board and intelligent terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108271312A true CN108271312A (en) | 2018-07-10 |
Family
ID=54804205
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810160659.1A Withdrawn CN108271312A (en) | 2015-08-28 | 2015-08-28 | Circuit board and intelligent terminal |
| CN201510541931.7A Active CN105163480B (en) | 2015-08-28 | 2015-08-28 | circuit board and intelligent terminal |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510541931.7A Active CN105163480B (en) | 2015-08-28 | 2015-08-28 | circuit board and intelligent terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108271312A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11360160B2 (en) | 2016-12-23 | 2022-06-14 | Huawei Technologies Co., Ltd. | Electronic device |
| CN107705581A (en) * | 2017-11-27 | 2018-02-16 | 无锡费舍太格科技有限公司 | A kind of buried vehicle checker of discrete wireless charging |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620167A (en) * | 2003-11-20 | 2005-05-25 | 启碁科技股份有限公司 | Mobile phone having radio network module and storage module |
| JP2009290764A (en) * | 2008-05-30 | 2009-12-10 | Nippon Telegr & Teleph Corp <Ntt> | Portable terminal and charging system |
| CN203481330U (en) * | 2013-07-24 | 2014-03-12 | 许玉林 | Safety device of lithium battery pack |
| CN103915905A (en) * | 2013-01-08 | 2014-07-09 | Lg电子株式会社 | Wireless power transmitter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3507333B2 (en) * | 1998-05-28 | 2004-03-15 | ローム株式会社 | Protection circuit and battery pack for rechargeable battery |
-
2015
- 2015-08-28 CN CN201810160659.1A patent/CN108271312A/en not_active Withdrawn
- 2015-08-28 CN CN201510541931.7A patent/CN105163480B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620167A (en) * | 2003-11-20 | 2005-05-25 | 启碁科技股份有限公司 | Mobile phone having radio network module and storage module |
| JP2009290764A (en) * | 2008-05-30 | 2009-12-10 | Nippon Telegr & Teleph Corp <Ntt> | Portable terminal and charging system |
| CN103915905A (en) * | 2013-01-08 | 2014-07-09 | Lg电子株式会社 | Wireless power transmitter |
| CN203481330U (en) * | 2013-07-24 | 2014-03-12 | 许玉林 | Safety device of lithium battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105163480A (en) | 2015-12-16 |
| CN105163480B (en) | 2018-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180710 |
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| WW01 | Invention patent application withdrawn after publication |