CN105163480B - circuit board and intelligent terminal - Google Patents

circuit board and intelligent terminal Download PDF

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Publication number
CN105163480B
CN105163480B CN201510541931.7A CN201510541931A CN105163480B CN 105163480 B CN105163480 B CN 105163480B CN 201510541931 A CN201510541931 A CN 201510541931A CN 105163480 B CN105163480 B CN 105163480B
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China
Prior art keywords
circuit board
power cord
source line
management chip
intelligent terminal
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CN201510541931.7A
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Chinese (zh)
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CN105163480A (en
Inventor
张广超
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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Priority to CN201510541931.7A priority Critical patent/CN105163480B/en
Priority to CN201810160659.1A priority patent/CN108271312A/en
Publication of CN105163480A publication Critical patent/CN105163480A/en
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    • 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

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

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 default distance, so that, the magnetic field that electric current in first power cord and second source line produces is constant, so that calibration function of the geomagnetic sensor when device is only by starting, the influence in the magnetic field that electric current produces 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

Circuit board and intelligent terminal
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, its function is also more and more, such as many products now All carry 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 far as possible Ring, now, the charging interval of intelligent terminal is shorter and shorter, and corresponding charging current is increasing, and electric current can produce magnetic field, greatly Charging current produce 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 set 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 Relation, the initial data detected to geomagnetic sensor corrected accordingly.
But detection is set in intelligent terminal and corrects circuit, cost is larger, and since hardware circuit has necessarily Response time, detection and correct circuit, it is difficult to the magnetic field produced 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 Can influence of the terminal charge electric current to geomagnetic sensor.
The content of the invention
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 interval is less than default 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 default distance is 0.8mm.
In the alternatively possible way of realization of foregoing circuit plate, circuit board, further includes：Geomagnetic sensor；
The geomagnetic sensor, the region being arranged 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 produces is constant so that the device such as geomagnetic sensor Calibration function when only by starting, so that it may overcome the influence in the magnetic field that electric current produces in power cord, need not be other in circuit board Detection and amendment circuit, save cost, and be inherently eliminated interference source.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for circuit board that the embodiment of the present invention one provides；
Fig. 2 is the profile of another circuit board provided by Embodiment 2 of the present invention；
Fig. 3 is the top view for another circuit board that the embodiment of the present invention three provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention 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 detection on circuit boards and correcting 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 being connected 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 produced at any time is constant, so that 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 change of external magnetic field simultaneously 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 a kind of structure diagram for circuit board that the embodiment of the present invention one provides.As shown in Figure 1, the circuit board, bag Include：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 default distance.
Wherein, power management chip, by the electricity exported in battery connector or the electricity from charging port input, 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 Flow 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, I3Can 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 53Deposit In following three kinds of situations：
1) I, is worked as3>I1When, I2Current direction be by power management chip → battery connector, be negative.I.e. at this time, flow 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 relation shown in formula (1)：
2) I, is worked as3=I1When, at this time, I2Size be 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 relation shown in formula (2) at this time：
Wherein, I2Equal to 0.
3) I, is worked as3Less than I1When, I2Current direction be：Battery connector → power management chip.At this time, second is flowed through 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 relation shown in formula (3)：
Situation in above-mentioned 3, can be unified for：And in guide for use pin, the power consumption I of system1Substantially It is consistent.Therefore,And be also it is changeless.According to Ampère circuital theorem, 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 produced 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 produces jointly is constant.
In the present embodiment, the first power cord is parallel with second source line, and interval is less than default distance, therefore the first electricity The magnetic field that electric current in source line and second source line produces 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 electricity is completely eliminated 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 being connected Power management chip is parallel with the second source line of the charging port, and interval is less than default distance so that, the first power supply The magnetic field that electric current in line and second source line produces is constant so that calibration work(of the geomagnetic sensor when device is only by starting Can, so that it may overcome the influence in the magnetic field that electric current produces in power cord, detect and correct circuit without others in circuit board, save Cost, and it has been inherently eliminated interference source.
Further, 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 profile of road plate.Fig. 3 is the top view for 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 the 3rd 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 each 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 Distance between second source line is the thickness of a wiring layer, for example is 0.2 millimeter (mm).
It should be noted that in the 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 in identical wiring layer, and interval is less than default distance.
Wherein, default 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, the vector sum of electric current produces in the first power cord and second source line Electromagnetic field is constant, and from Fig. 2 or Fig. 3, the length of second source line is different from the length of the first power cord, is connected in battery Device is with the direct region of charging port, only existing second source line, 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, any point magnetic field around conducting wire The distance dependent of intensity and the distance of wire, can also be arranged far from the first power cord and second as far as possible by geomagnetic sensor The position of power cord.
Circuit board provided in this embodiment, connects the first power cord of power management chip and battery connector, with being connected Power management chip is parallel with the second source line of the charging port, and interval is less than default distance so that, the first power supply The magnetic field that electric current in line and second source line produces is constant so that calibration work(of the geomagnetic sensor when device is only by starting Can, so that it may overcome the influence in the magnetic field that electric current produces 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.
The circuit board provided based on the various embodiments described above, the present invention provide 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 several part connection relation and function can refer to the detailed description of above-described embodiment, herein Repeat 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 default Distance so that, the magnetic field that the electric current in the first power cord and second source line produces is constant so that the device such as geomagnetic sensor is only Calibration function during by starting, so that it may overcome the influence in the magnetic field that electric current produces in power cord, 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 programmed instruction is completed, and foregoing program can be stored in a computer read/write memory medium, the program Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light Disk etc. is various can be with the medium of store program codes.
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 described in foregoing embodiments, either to which part or all technical characteristic into Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (6)

  1. A kind of 1. circuit board, it is characterised 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 produces, and between first power cord and the second source line Every less than default distance.
  2. 2. circuit board according to claim 1, it is characterised 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. 3. circuit board according to claim 1, it is characterised 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. 4. according to any circuit boards of claim 1-3, it is characterised in that the default distance is 0.8mm.
  5. 5. circuit board according to claim 4, it is characterised in that
    The geomagnetic sensor is arranged on the region between the power management chip and battery connector.
  6. 6. a kind of intelligent terminal, it is characterised in that including the circuit board as described in claim 1-5 is any.
CN201510541931.7A 2015-08-28 2015-08-28 circuit board and intelligent terminal Active CN105163480B (en)

Priority Applications (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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510541931.7A CN105163480B (en) 2015-08-28 2015-08-28 circuit board and intelligent terminal

Related Child Applications (1)

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CN201810160659.1A Division CN108271312A (en) 2015-08-28 2015-08-28 Circuit board and intelligent terminal

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CN105163480B true CN105163480B (en) 2018-05-15

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CN201810160659.1A Withdrawn CN108271312A (en) 2015-08-28 2015-08-28 Circuit board and intelligent terminal

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299579A (en) * 1998-05-28 2001-06-13 罗姆股份有限公司 Circuit bord of protective circuit for storage battery, protective circuit for storage battery, and storage pack
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
CN203481330U (en) * 2013-07-24 2014-03-12 许玉林 Safety device of lithium battery pack

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4812808B2 (en) * 2008-05-30 2011-11-09 日本電信電話株式会社 Mobile terminal and charging system
KR101977088B1 (en) * 2013-01-08 2019-05-10 엘지전자 주식회사 Wireless power transmitter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299579A (en) * 1998-05-28 2001-06-13 罗姆股份有限公司 Circuit bord of protective circuit for storage battery, protective circuit for storage battery, and storage pack
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
CN203481330U (en) * 2013-07-24 2014-03-12 许玉林 Safety device of lithium battery pack

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CN105163480A (en) 2015-12-16

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