CN207765577U - Battery capacity manages circuit - Google Patents
Battery capacity manages circuit Download PDFInfo
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- CN207765577U CN207765577U CN201721920766.7U CN201721920766U CN207765577U CN 207765577 U CN207765577 U CN 207765577U CN 201721920766 U CN201721920766 U CN 201721920766U CN 207765577 U CN207765577 U CN 207765577U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of battery capacities to manage circuit; applied to electronic equipment; including battery, display screen, the first control module, the second control module, electric quantity detecting circuit, display circuit and battery protecting circuit; first control module is connect with electric quantity detecting circuit, the second control module and display circuit; voltage for the output end for obtaining electric quantity detecting circuit; to determine the information about power of battery and be sent to the second control module; and display circuit is sent a control signal to, so that display circuit control display screen is shown；Second control module is connect with the first control module and battery protecting circuit; when getting the electricity percentage of battery of the first control module transmission less than threshold value; battery protecting circuit is sent a control signal to, so that battery protecting circuit control battery is disconnected with the operating circuit in electronic equipment.It is unreasonable that the utility model solves the problems, such as that existing battery capacity manages.
Description
Technical field
The utility model is related to field of batteries, and circuit is managed more particularly to a kind of battery capacity.
Background technology
With the development of electronic technology, more and more production firms generate miscellaneous electronic equipment, electronic equipment
It is upper to integrate miscellaneous sensor assembly, it can realize that miscellaneous use can, wherein the use of electronic equipment is main
Rely on battery and power supply.
Wherein, the isometric larger electronic equipment generally use power supply adaptor of TV, computer is connect with power supply, real
The power supply of existing electronic equipment, and smaller electronic equipment then usually requires in-built electrical in equal volume for similar smart mobile phone, Intelligent flat
Pond is to realize Mobile portable, when the dead battery capability in electronic equipment, by charger be electronic equipment battery into
Row charging.
The equipment that the prior art detects battery is seldom, and battery is fitted into the product in use by people, until actual use
Arrive out of power, just know and be done for, can not at the beginning of use or midway, effectively detected.Most multi-purpose multimeter makes a call to one
Lower voltage, but can not directly be clear from the information such as battery also how many energy.In this case, user cannot replace in time
Battery or charging influence the progress of normal work.In addition, for rechargeable battery, it is not known that remaining electricity is easily lead to
Battery over-discharge reduces the service life that circulating battery uses.
Utility model content
Based on this, the purpose of this utility model is that proposing a kind of battery capacity management circuit, existing battery capacity is solved
Manage unreasonable problem.
The utility model provides a kind of battery capacity management circuit, and specific technical solution is as follows：
A kind of battery capacity management circuit, is applied to electronic equipment, including battery, display screen, the battery capacity management
Circuit further includes：
Electric quantity detecting circuit is connect with the battery；
First control module is connect with the electric quantity detecting circuit, one second control module and a display circuit respectively, is used
In the voltage for the output end for obtaining the electric quantity detecting circuit, with the information about power of the determination battery and the electricity letter is sent
Breath is to second control module, and sends a control signal to the display circuit, so that described in display circuit control
Display screen is shown；
Second control module is connect with first control module and a battery protecting circuit respectively, is obtained for working as
When getting the electricity percentage for the battery that first control module is sent less than threshold value, the electricity is sent a control signal to
Protect circuit in pond；
The battery protecting circuit is connect with the battery and second control module respectively, and institute is got for working as
When stating the control signal of the second control module transmission, the operating circuit for controlling the battery and the electronic equipment disconnects company
It connects.
Battery capacity provided by the utility model manages circuit, and the defeated of electric quantity detecting circuit is obtained by the first control module
The voltage value of outlet, and voltage value is converted into digital signal, to determine the current electric quantity information of battery, and believed by sending
Number to display circuit so that display circuit control display screen is shown, and the first control module can be by the current electricity of battery
Amount information is sent to the second control module, when the second control module, which compares, determines that the electricity percentage of battery is less than threshold value, hair
Send control signal to battery protecting circuit so that battery protecting circuit disconnects the company of battery and the operating circuit in electronic equipment
It connects so that battery can not be powered for electronic equipment, therefore play the role of protecting battery, it is therefore prevented that battery is due to excessive
Problem is damaged caused by electric discharge, and it is unreasonable to solve the problems, such as that existing battery capacity manages.
In addition, managing circuit according to battery capacity provided by the utility model, there can also be following additional technology special
Sign：
Further, battery capacity management circuit further includes charging module, the charging module respectively with the electricity
Pond is connected with first control module, and described is sent to for charging for the battery, and by work state information
One control module.
Further, the charging module is charging chip, and the charging chip includes five pins, and it is defeated to be followed successively by power supply
Enter foot, grounding leg, connect battery foot, charged state instruction foot and charging current programming foot, the power input foot and the electricity
The power supply adaptor of sub- equipment connects, and the first diode, the ground connection are equipped between the power input foot and the battery
Foot is grounded, the anode connection for connecing battery foot and battery, the charged state instruction foot difference first resistor and second resistance
One end, the other end of the second resistance connect with first control module, and the charging current programming foot connects with first
Ground resistance connects.
Wherein, it when charged state instruction foot is low level, is expressed as charging；When charged state instruction foot is
When high level, expression has been filled with or the charging module is not connect with power supply adaptor, and charging current programming foot connects between ground
It is connected to one first ground resistance, the resistance value by the way that the first ground resistance is arranged can control the size of charging current.
Further, the electric quantity detecting circuit include successively the first divider resistance for connecting of anode with the battery and
Second divider resistance, one end that first divider resistance is connect with the battery are connected separately with the first capacitance and the second electricity
Hold, first capacitance, second capacitance other end ground connection, the other end of first divider resistance is electricity inspection
The output end of slowdown monitoring circuit, respectively with first control module and third capacitance connection, another termination of the third capacitance
Ground.
Wherein, the first capacitance, the second capacitance, third capacitance are used to filter out the clutter in battery, and battery is by the first partial pressure
Resistance and the second divider resistance realize partial pressure, and the voltage value after dividing is by the ADC cell processings in the first control module
After be converted to digital signal, at this time by the first control module to the comparison of the digital signal determine battery current residual electricity
Amount, determines the electricity percentage of its battery.
Further, the display circuit include the 3rd resistor being connect with first control module, respectively with it is described
The second ground resistance and the first triode of the other end connection of 3rd resistor, the 4th connect respectively with first triode
Resistance and the first metal-oxide-semiconductor, the 4th capacitance being connect with first metal-oxide-semiconductor, the 3rd resistor and first triode
Base stage connects, the emitter of first triode ground connection, the collector of first triode respectively with first metal-oxide-semiconductor
Grid connected with the 4th resistance, the source electrode of first metal-oxide-semiconductor respectively with the other end of the 4th resistance and described
The power supply circuit of display screen connects, and the drain electrode of first metal-oxide-semiconductor is connect with the 4th capacitance and the display screen respectively, institute
State the other end ground connection of the 4th capacitance.
Wherein, when display module receives the high level signal of the first control module transmission, the first triode ON,
So that the first MOS is also switched on, display screen power supply circuit is powered to display screen at this time, and display screen is sent according to the first control module
Signal can show the information about power of its battery.
Further, the battery protecting circuit include the 5th resistance being connect with second control module, with it is described
5th resistance connection the second diode, connect with second diode the 6th resistance, respectively with the 6th resistance company
The 5th capacitance, third ground resistance, the second triode connect, the 7th resistance being connect with second triode, respectively with institute
State the second metal-oxide-semiconductor and the 8th resistance of the connection of the 7th resistance, the other end ground connection of the 5th capacitance, the 6th resistance and institute
State the base stage connection of the second triode, the emitter ground connection of second triode, the collector of second triode and institute
State one end connection of the 7th resistance, the other end of the 7th resistance respectively with the 8th resistance and second metal-oxide-semiconductor
Grid connects, and the other end of the 8th resistance is connect with the source electrode of second metal-oxide-semiconductor and the positive of the battery, and described the
The drain electrode of two metal-oxide-semiconductors is connect with the operating circuit of the electronic equipment.
Wherein, when the second control module gets the electricity high percentage of the battery of the first control module detection in threshold value
When, second control signal is sent to battery protecting circuit, one end that the second control module is connected with battery protecting circuit at this time
It is placed in and keeps high level, at this time the second triode ON in battery protecting circuit, due to the 7th resistance and the 8th resistance
Partial pressure acts on so that and the grid voltage of the second metal-oxide-semiconductor is much smaller than the source voltage of the second metal-oxide-semiconductor, therefore the second metal-oxide-semiconductor is connected,
So that being connected between battery and operating circuit, start as power electronic equipment；When the second control module gets the first control mould
When the electricity percentage of the battery of block detection is less than threshold value, first control signal is sent to battery protecting circuit, at this time by second
One end that control module is connected with battery protecting circuit is placed in and keeps low level, and the second triode in battery protecting circuit is cut
Only, since the grid voltage of the second metal-oxide-semiconductor is close with source voltage, the cut-off of the second metal-oxide-semiconductor, therefore battery and operating circuit
Between be off so that battery can not be powered for electronic equipment, thus play the role of protect battery, prevent
Battery is due to damaging problem caused by over-discharge.
Further, first control module is a wireless audio module, the model of the wireless audio module
RTL8711AM, the ADC units in first control module are connect with the output end of the electric quantity detecting circuit, for by institute
The voltage for stating the output end of electric quantity detecting circuit is converted into digital signal, with the information about power of the determination battery, described first
Multiple GIPO interfaces in control module respectively with the charging module, the display module and second control module
Connection.
Further, first triode and second triode are NPN type triode.
Further, first metal-oxide-semiconductor is P-channel enhancement type power MOS pipe, and second metal-oxide-semiconductor enhances for P-channel
Type metal-oxide-semiconductor.
Further, second control module is STM8S003F3 type microcontrollers.
Description of the drawings
Fig. 1 is the structural schematic diagram that the battery capacity that the utility model first embodiment proposes manages circuit.
Fig. 2 is the signal that the battery capacity that the utility model first embodiment proposes manages the first control module in circuit
Figure.
Fig. 3 is the signal that the battery capacity that the utility model first embodiment proposes manages the second control module in circuit
Figure.
Fig. 4 is the structural representation that the battery capacity that the utility model first embodiment proposes manages charging module in circuit
Figure.
Fig. 5 is that the structure of electric quantity detecting circuit in the battery capacity management circuit that the utility model first embodiment proposes is shown
It is intended to.
Fig. 6 is the structural representation that the battery capacity that the utility model first embodiment proposes manages display circuit in circuit
Figure.
Fig. 7 is that the structure of battery protecting circuit in the battery capacity management circuit that the utility model first embodiment proposes is shown
It is intended to.
Specific implementation mode
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings to this
The specific implementation mode of utility model is described in detail.Elaborate many details in order to abundant in the following description
Understand the utility model.But the utility model can be much to implement different from other manner described here, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific implementation opened.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.Term " and or " used herein includes one or more relevant Listed Items
Any and all combinations.
It please refers to Fig.1 to Fig. 7, the battery capacity that the first embodiment of the utility model provides manages circuit 10, is applied to
In electronic equipment, including battery BAT, charging module 20, the first control module 30, the second control module 40, electric quantity detecting circuit
50, display circuit 60, battery protecting circuit 70 and display screen 80.
Wherein, charging module 20 is connect with the anode of power supply adaptor, the first control module 30 and battery BAT respectively, when
When the external power supply of power supply adaptor connection, which is battery BAT by the power supply that power supply adaptor provides
Charging；Wherein, charging module 20 includes charging chip, which includes five pins, is followed successively by power input foot
(VCC), grounding leg (GND), connect battery foot (BAT), charged state instruction foot (/CHG) and charging current programming foot
(PROG).In the present embodiment, the charging chip is using charging IC, model PT6112.Its power input foot (VCC) and power supply
Adaptor power supplies connect, and the power supply of power supply adaptor exports for 5V voltages so that battery BAT charges, wherein power supply adaptor electricity
The first diode D1 is connected between source and power input foot (VCC), wherein the anode and power supply adaptor of the first diode D1
Power supply connects, and the cathode of the first diode D1 is connect with power input foot (VCC).Its grounding leg (GND) is grounded, and connects battery foot
(BAT) it is connect with the anode of battery BAT, charged state instruction foot (/CHG) is for indicating current charged state, the charging shape
State instruction foot (/CHG) respectively first resistor R1 connect with one end of second resistance R2, wherein the other end of first resistor R1 and
4.2V power supplys connect, and the other end (CHG) of second resistance R2 is connect with the GPIOA_5 pins in the first control module 30, and first
Control module 30 can determine whether battery BAT is in charged state by obtaining the level of GPIOA_5 pins.The wherein charging
When state instruction foot (/CHG) is low level, it is expressed as charging；When charged state instruction foot (/CHG) is high level,
Expression has been filled with or the charging module 20 is not connect with power supply adaptor；Wherein charging current programming foot (PROG) connects between ground
It is connected to one first ground resistance R11, in the present embodiment, the resistance value of first resistor R1 is 100K ohm, the resistance value of second resistance R2
It it is 1K ohm, the resistance value of the first ground resistance R11 is 3K ohm.In the present embodiment, by the way that first ground resistance R11 is arranged
Resistance value size so that charging current is set as 300 milliamperes.Charging module 20 can be with 300 milliamperes of charging current at this time
It charges for battery BAT.
Wherein, the first control module 30 respectively with charging module 20, the second control module 40, electric quantity detecting circuit 50, aobvious
Show that circuit 60 connects, in the present embodiment, the first control module 30 is a wireless audio module (RTL8711AM) comprising 54
A pin, wherein the GPIOA_5 pins of the first control module 30 and one end (CHG) of the second resistance R2 of charging module 20 connect
It connects, the charged state for obtaining charging module 20 indicates the height of the level of foot (/CHG), is with the determining charging module 20
It is no to be in charged state；Output end (the BAT_ of the ADC_CH2 pins Yu electric quantity detecting circuit 50 of wherein the first control module 30
DET it) connects, the voltage value for obtaining 50 output end of electric quantity detecting circuit (BAT_DET), and converts the voltage value to number
Signal obtains the electricity percentage of battery BAT to measure and determine battery BAT voltages (VBAT), wherein the first control module
30 GPIOC_3 pins (LED_CTRL) are connect with display circuit 60, for controlling display circuit 60 with output display screen 80
Show content；The GPIOC_5 pins (CTRL_A) of first control module 30 and PC5 (HS)/SPI_ of the second control module 40
SCLK pins connect, and battery BAT voltages (VBAT) information for will get is sent to the second control module 40, wherein second
Control module 40 is that microcontroller is specially in the present embodiment STM8S003F3 model microcontrollers, it is possible to understand that,
In the other embodiment of the utility model, the second control module 40 can also be other processing chips.
Wherein, electric quantity detecting circuit 50 is connect with battery BAT and the first control module 30 respectively, and electric quantity detecting circuit 50 wraps
The the first divider resistance R21 and the second divider resistance R22 being connect successively with the anode of battery BAT are included, wherein the first divider resistance
R21 is connected separately with the first capacitance C1 and the second capacitance C2, the first capacitance C1, the second capacitance C2 with the one end connecting battery BAT
The other end ground connection, wherein the other end of the first divider resistance R21 be electric quantity detecting circuit 50 output end (BAT_DET),
It is connect with the ADC_CH2 pins of the first control module 30, the output end (BAT_DET) of electric quantity detecting circuit 50 is also connected with a third
The other end of capacitance C3, third capacitance C3 are grounded, wherein the first capacitance C1, the second capacitance C2, third capacitance C3 are for filtering out electricity
Clutter in the BAT of pond.The resistance value of the first divider resistance R21 and the second divider resistance R22 are the Europe 300K wherein in the present embodiment
The capacitance of nurse, the first capacitance C1 is 100nF/16V, and the capacitance of the second capacitance C2 is 10uF/16V, the electricity of third capacitance C3
Capacitance is 0.01uF/16V, and wherein battery BAT realizes partial pressure by the first divider resistance R21 and the second divider resistance R22, and
Voltage value after partial pressure is converted to digital signal after the ADC cell processings in the first control module 30, passes through first at this time
Control module 30 determines the comparison of the digital signal current residual electricity of battery BAT, determines the electricity hundred of its battery BAT
Divide ratio.
Wherein, display circuit 60 is connect with the first control module 30 and display screen 80 respectively, and display circuit 60 includes and
The 3rd resistor R3 of GPIOC_3 pins (LED_CTRL) connection of one control module 30, the respectively other end with 3rd resistor R3
The the second ground resistance R12 and the first triode Q1 of connection, the 4th resistance R4 and first being connect respectively with the first triode Q1
Metal-oxide-semiconductor Q11, the 4th capacitance C4 being connect with the first metal-oxide-semiconductor Q11.The other end of wherein the second ground resistance R12 is grounded, third
Resistance R3 is connect with the base stage b of the first triode Q1, the emitter e ground connection of the first triode Q1, the current collection of the first triode Q1
Pole c is connect with the grid g of the first metal-oxide-semiconductor Q11 and the 4th resistance R4 respectively, and the source electrode s of the first metal-oxide-semiconductor Q11 is electric with the 4th respectively
Hinder the other end and display screen power supply circuit (3.3V) connection of R4, the drain electrode d of the first metal-oxide-semiconductor Q11 respectively with the 4th capacitance C4 and
Display screen 80 (LED) connects, wherein the other end ground connection of the 4th capacitance C4.Wherein in the present embodiment, display screen 80 is that LED is shown
The resistance value of screen, 3rd resistor R3 is 10K ohm, and the resistance value of the second ground resistance R12 is 10K ohm, the resistance value of the 4th resistance R4
It it is 100K ohm, the capacitance of the 4th capacitance C4 is 0.1uF, and the first triode Q1 is NPN type triode, and the first metal-oxide-semiconductor Q11 is
P-channel enhancement type power MOS pipe, model AP2307N, the signal that display screen 80 is sent according to the first control module 30 at this time
It can show the information about power of its battery BAT.
Wherein, the second control module 40 is connect with power switch, the first control module 30 and battery protecting circuit 70 respectively,
Electricity percentage for the battery BAT for when user presses power switch to be switched on, obtaining the detection of the first control module 30,
When the electricity percentage of its battery BAT is less than threshold value, battery protecting circuit 70 is sent a control signal to, to prevent battery BAT
Problem is damaged caused by over-discharge.The PC5 (HS) of wherein the second control module 40/SPI_SCLK pins (CRTL_A) and first
The GPIOC_5 pins (CTRL_A) of control module 30 connect, and the battery BAT determined is detected for obtaining the first control module 30
Electricity percentage；The PC6 (HS) of second control module 40/SPI_MOSI pins (POWER_KEY) and power switch (POWER_
KEY it) connects, for obtaining control switching signal, when user needs the electronics for opening and using battery capacity management circuit 10 to set
When standby, power switch is pressed, the second control module 40 gets switching signal at this time, starts to be switched on for electronic equipment；Second control
The PC7 (HS) of molding block 40/SPI_MISO pins (POWER_HOLD) are connect with battery protecting circuit 70, for when the second control
When the electricity percentage that module 40 gets the battery BAT of the first control module 30 detection is less than threshold value, the first control letter is sent
Number to battery protecting circuit 70 so that battery protecting circuit 70 disconnects the connection of the operating circuit of battery BAT and electronic equipment, when
Second control module 40 gets the electricity high percentage of the battery BAT of the first control module 30 detection when threshold value, sends the
Two control signals are to battery protecting circuit 70, with control electronics normal boot-strap.
Wherein, battery protecting circuit 70 is connect with battery BAT and the second control module respectively, and battery protecting circuit 70 includes
The 5th resistance R5 being connect with the PC7 (HS) of the second control module 40/SPI_MISO pins (POWER_HOLD) and the 5th resistance
Second diode D2 of R5 connections, the 6th resistance R6 being connect with the second diode D2, connect respectively with the 6th resistance R6
Five capacitance C5, third ground resistance R13, the second triode Q2, the 7th resistance R7 being connect with the second triode Q2, respectively with
The the second metal-oxide-semiconductor Q12 and the 8th resistance R8 of seven resistance R7 connections.Wherein, the other end ground connection of the 5th capacitance C5, third ground connection electricity
The other end ground connection of R13 is hindered, the 6th resistance R6 is connect with the base stage b of the second triode Q2, and the emitter e of the second triode Q2 connects
The collector c on ground, the second triode Q2 is connect with one end of the 7th resistance R7, and the other end of the 7th resistance R7 is electric with the 8th respectively
The grid g connections of R8 and the second metal-oxide-semiconductor Q12 are hindered, the other end of the 8th resistance R8 is connect with the source electrode s of the second metal-oxide-semiconductor Q12, the
The source electrode s of two metal-oxide-semiconductor Q12 is also connect with the anode of battery BAT, the operating circuit of the drain electrode and electronic equipment of the second metal-oxide-semiconductor Q12
Connection, wherein in the present embodiment, the resistance value of the 6th resistance R6 is 10K ohm, and the resistance value of the 7th resistance R7 is 1K ohm, the
The resistance value of eight resistance R8 is 100K ohm, and the resistance value of third ground resistance R13 is 10K ohm, and the capacitance of the 5th capacitance C5 is
100nF, the second triode Q2 are NPN type triode, and the second metal-oxide-semiconductor Q12 is P-channel enhancement type metal-oxide-semiconductor.
At this time when the second control module 40 get the first control module 30 detection battery BAT electricity high percentage in
When threshold value, second control signal is sent to battery protecting circuit 70, i.e., by its PC7 (HS)/SPI_MISO pins (POWER_
HOLD it) is placed in and keeps high level, at this time the second triode Q2 conductings in battery protecting circuit 70, at this time due to the 7th resistance
The partial pressure of R7 and the 8th resistance R8 act on so that the grid g voltages of the second metal-oxide-semiconductor Q12 are much smaller than the source electrode s of the second metal-oxide-semiconductor Q12
Voltage, at this time the second metal-oxide-semiconductor Q12 conducting so that be connected between battery BAT and operating circuit, start for power electronic equipment, to make
The operating circuit for obtaining electronic equipment is in running order；When the second control module 40 gets the electricity of the first control module 30 detection
The electricity percentage of pond BAT be less than threshold value when, send first control signal to battery protecting circuit 70, i.e., by its PC7 (HS)/
SPI_MISO pins (POWER_HOLD) are placed in and keep low level, and the second triode Q2 in battery protecting circuit 70 is cut at this time
Only, the grid g voltages of the second metal-oxide-semiconductor Q12 are close with source electrode s voltages at this time, the second metal-oxide-semiconductor Q12 cut-offs, therefore battery at this time
It is off between BAT and operating circuit so that battery BAT can not be powered for electronic equipment, therefore play guarantor
Protect the effect of battery BAT, it is therefore prevented that battery BAT is due to damaging problem caused by over-discharge.
Wherein, after user presses power switch to be switched on, electric quantity detecting circuit 50 detects the voltage of battery BAT, and
It is sent to the first control module 30, the detection of the first control module 30 determines the electricity percentage of battery BAT and is sent to display electricity
Road 60 so that display screen 80 shows the electricity percentage of battery BAT, and at this time the first control module 30 by the electricity of battery BAT
Percentage is sent to the second control module 40 simultaneously, and the second control module 40 gets the electricity hundred of the first control module 30 transmission
After dividing ratio, which is compared with threshold value, when the second control module 40 compares the electricity percentage of determining battery BAT
When than being higher than threshold value, PC7 (HS)/SPI_MISO pins (POWER_HOLD) are placed in and are kept high level, so that electronic equipment
Normal work resets the level of PC7 (HS)/SPI_MISO pins (POWER_HOLD) when shutdown, discharges power supply.When
When two control modules 40 compare the electricity percentage for determining battery BAT less than threshold value, by PC7 (HS)/SPI_MISO pins
(POWER_HOLD) it is placed in and is kept low level, so that electronic equipment cannot be started up work, to protect battery BAT, prevents battery
BAT is due to damaging problem caused by over-discharge.
Battery capacity provided in this embodiment manages circuit 10, is that battery BAT charges by charging module 20, passes through
First control module 30 obtains the voltage value of the output end of electric quantity detecting circuit 50, and voltage value is converted to digital signal, with
Determine the current electric quantity information of battery BAT, and by sending a signal to display circuit 60 so that the control display of display circuit 60
Screen 80 is shown, and the current electric quantity information of battery BAT can be sent to the second control module 40 by the first control module 30,
When the second control module 40, which compares, determines that the electricity percentage of battery BAT is less than threshold value, battery protection is sent a control signal to
Circuit 70 so that battery protecting circuit 70 disconnects the connection of battery BAT and the operating circuit in electronic equipment so that battery BAT
It can not be powered for electronic equipment, therefore play the role of protecting battery BAT, it is therefore prevented that battery BAT is due to over-discharge
Caused by damage problem, it is unreasonable to solve the problems, such as that existing battery capacity manages.
It should be appreciated that each section of the utility model can be realized with hardware, software, firmware or combination thereof.
In the above embodiment, the software or firmware that can in memory and by suitable instruction execution system be executed with storage are come real
It is existing.It, and in another embodiment, can be in following technology well known in the art for example, if realized with hardware
Any one or their combination are realized：Discrete logic with the logic gates for realizing logic function to data-signal
Circuit, the application-specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), field-programmable gate array
It arranges (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of battery capacity manages circuit, it is applied to electronic equipment, including battery, display screen, which is characterized in that further include：
Electric quantity detecting circuit is connect with the battery；
First control module is connect respectively with the electric quantity detecting circuit, one second control module and a display circuit, for obtaining
The voltage for taking the output end of the electric quantity detecting circuit with the information about power of the determination battery and sends the information about power extremely
Second control module, and the display circuit is sent a control signal to, so that the display circuit controls the display
Screen display；
Second control module is connect with first control module and a battery protecting circuit respectively, is got for working as
When the electricity percentage for the battery that first control module is sent is less than threshold value, sends a control signal to the battery and protect
Protection circuit；
The battery protecting circuit is connect with the battery and second control module respectively, for when getting described the
When the control signal that two control modules are sent, the operating circuit for controlling the battery and the electronic equipment disconnects.
2. battery capacity according to claim 1 manages circuit, which is characterized in that the battery capacity management circuit also wraps
Include charging module, the charging module is connect with the battery and first control module respectively, for for the battery into
Row charging, and work state information is sent to first control module.
3. battery capacity according to claim 2 manages circuit, which is characterized in that the charging module is charging chip,
The charging chip include five pins, be followed successively by power input foot, grounding leg, connect battery foot, charged state instruction foot and
Charging current programs foot, and the power input foot is connect with the power supply adaptor of the electronic equipment, and the power input foot
The first diode is equipped between the battery, the grounding leg is grounded, the anode connection for connecing battery foot and battery, described
Charged state indicates that one end of foot difference first resistor and second resistance, the other end of the second resistance are controlled with described first
Module connects, and the charging current programming foot is connect with the first ground resistance.
4. battery capacity according to claim 3 manages circuit, which is characterized in that the electric quantity detecting circuit includes successively
The first divider resistance and the second divider resistance being connect with the anode of the battery, first divider resistance connect with the battery
The one end connect is connected separately with the first capacitance and the second capacitance, first capacitance, second capacitance other end ground connection, institute
The other end for stating the first divider resistance is the output end of the electric quantity detecting circuit, respectively with first control module and the
Three capacitance connections, the other end ground connection of the third capacitance.
5. battery capacity according to claim 1 manages circuit, which is characterized in that the display circuit includes and described the
The 3rd resistor of one control module connection, the second ground resistance and the one or three being connect respectively with the other end of the 3rd resistor
Pole pipe, the 4th resistance being connect respectively with first triode and the first metal-oxide-semiconductor, the 4th connect with first metal-oxide-semiconductor
Capacitance, the 3rd resistor are connect with the base stage of first triode, the emitter of first triode ground connection, and described the
The collector of one triode is connect with the grid of first metal-oxide-semiconductor and the 4th resistance respectively, the source of first metal-oxide-semiconductor
Pole is connect with the power supply circuit of the other end of the 4th resistance and the display screen respectively, the drain electrode point of first metal-oxide-semiconductor
It is not connect with the 4th capacitance and the display screen, the other end ground connection of the 4th capacitance.
6. battery capacity according to claim 5 manages circuit, which is characterized in that the battery protecting circuit includes and institute
The 5th resistance for stating the connection of the second control module, the second diode being connect with the 5th resistance and second diode
6th resistance of connection, the 5th capacitance, third ground resistance, the second triode being connect respectively with the 6th resistance, with institute
State the 7th resistance of the second triode connection, the second metal-oxide-semiconductor and the 8th resistance that are connect respectively with the 7th resistance, described the
The other end of five capacitances is grounded, and the 6th resistance is connect with the base stage of second triode, the hair of second triode
Emitter grounding, the collector of second triode are connect with one end of the 7th resistance, the other end of the 7th resistance
It is connect respectively with the grid of the 8th resistance and second metal-oxide-semiconductor, the other end and the 2nd MOS of the 8th resistance
The anode connection of the source electrode of pipe and the battery, the operating circuit of the drain electrode and the electronic equipment of second metal-oxide-semiconductor
Connection.
7. battery capacity according to claim 4 manages circuit, which is characterized in that first control module is one wireless
Audio-frequency module, the model RTL8711AM of the wireless audio module, ADC units in first control module with it is described
The output end of electric quantity detecting circuit connects, for converting the voltage of the output end of the electric quantity detecting circuit to digital signal,
With the information about power of the determination battery, multiple GIPO interfaces in first control module respectively with the charging module,
The display module and second control module connection.
8. battery capacity according to claim 6 manages circuit, which is characterized in that first triode and described second
Triode is NPN type triode.
9. battery capacity according to claim 6 manages circuit, which is characterized in that first metal-oxide-semiconductor enhances for P-channel
Type power MOS pipe, second metal-oxide-semiconductor are P-channel enhancement type metal-oxide-semiconductor.
10. battery capacity according to claim 1 manages circuit, which is characterized in that second control module is
STM8S003F3 type microcontrollers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721920766.7U CN207765577U (en) | 2017-12-29 | 2017-12-29 | Battery capacity manages circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721920766.7U CN207765577U (en) | 2017-12-29 | 2017-12-29 | Battery capacity manages circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879892A (en) * | 2018-09-20 | 2018-11-23 | 山东思科赛德矿业安全工程有限公司 | A kind of double cell group automatic switchover power supply system |
| CN109505463A (en) * | 2019-01-09 | 2019-03-22 | 广东好太太科技集团股份有限公司 | A kind of intelligent door lock with Type-c interface |
| CN110416642A (en) * | 2019-07-30 | 2019-11-05 | 四川长虹电器股份有限公司 | The brand protection system of disposable replaceable battery |
| CN111337845A (en) * | 2020-02-24 | 2020-06-26 | 惠州迪芬尼声学科技股份有限公司 | Electric quantity management system |
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2017
- 2017-12-29 CN CN201721920766.7U patent/CN207765577U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879892A (en) * | 2018-09-20 | 2018-11-23 | 山东思科赛德矿业安全工程有限公司 | A kind of double cell group automatic switchover power supply system |
| CN108879892B (en) * | 2018-09-20 | 2024-04-19 | 山东思科赛德矿业安全工程有限公司 | Automatic switching power supply system for double battery packs |
| CN109505463A (en) * | 2019-01-09 | 2019-03-22 | 广东好太太科技集团股份有限公司 | A kind of intelligent door lock with Type-c interface |
| CN110416642A (en) * | 2019-07-30 | 2019-11-05 | 四川长虹电器股份有限公司 | The brand protection system of disposable replaceable battery |
| CN110416642B (en) * | 2019-07-30 | 2022-05-31 | 四川长虹电器股份有限公司 | Brand protection system with disposable replaceable battery |
| CN111337845A (en) * | 2020-02-24 | 2020-06-26 | 惠州迪芬尼声学科技股份有限公司 | Electric quantity management system |
| CN111337845B (en) * | 2020-02-24 | 2022-06-14 | 惠州迪芬尼声学科技股份有限公司 | Electric quantity management system and method |
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