CN204761070U - Battery power display device - Google Patents

Battery power display device Download PDF

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Publication number
CN204761070U
CN204761070U CN201520378572.3U CN201520378572U CN204761070U CN 204761070 U CN204761070 U CN 204761070U CN 201520378572 U CN201520378572 U CN 201520378572U CN 204761070 U CN204761070 U CN 204761070U
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battery
port
unit
control unit
control
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苏上丁
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The embodiment of the utility model discloses battery power display device, include: battery the detecting unit, the control unit and battery indicator unit, battery the detecting unit for give when listening the battery access the the control unit power supply, and listen the residual capacity information of battery, the control unit, with battery the detecting unit electricity is connected, is used for receiving battery output's electric energy, and receive the residual capacity information of battery, and according to the residual capacity information of battery produces a control signal, the battery indicator unit, with the the control unit electricity is connected, is used for control signal's control shows down the residual capacity of battery. Adopt the utility model discloses can, the battery instruct the battery whether successfully to insert when inserting ear power amplifier to show the residual capacity of battery when the battery successfully inserts, supply the user to refer to the use.

Description

A kind of battery electric quantity display device
Technical field
The utility model relates to earphone power amplifier field, particularly relates to a kind of battery electric quantity display device in earphone power amplifier.
Background technology
Some medium-to-high grade earphones, in order to obtain good LF-response, often adopt the design of high-density coils long stroke, make the impedance of earphone can be high to 200 ~ 600 ohm, and common portable audio-visual equipment run into such high impedance earphone can reduction power output at double, and destroy frequency response curve, affect the performance of earphone strength.Earphone power amplifier (being called for short: ear is put or Earphone Amplifier) is the middle and high end headset designs of these high impedances.Between source of sound and earphone, add earphone power amplifier, can improve the power output of source of sound, play the effect of tone color trend improving tonequality, regulating system, play the strength of earphone, this builds consensus having in the fan of ultimate attainment pursuit tonequality.
Earphone power amplifier many employings secondary cell (rechargeable battery), and carry out the dump energy of pilot cell with the LED of color or the display screen that carries with many, but in prior art, usually only power key is being pressed, the display screen just can opened LED or carry when opening earphone power amplifier, show now earphone power amplifier battery dump energy, use for reference.But in practical application scene, such as: user needs to carry earphone power amplifier and listens to the music on long-distance car, on the point of setting out need to change its battery, and check whether the new battery changed has enough electricity for during the journey, now check according to method mentioned above, and the dump energy running into several pieces of batteries does not meet user when requiring, just there will be and press power key frequently and carry out starting shooting, shut down thus carry out the phenomenon of battery altering, bring the mechanical loss of power button, and complex operation step, waste user time.
Utility model content
The utility model embodiment provides a kind of battery electric quantity display device, the mechanical loss of power button can be reduced, realize pilot cell when earphone power amplifier inserts battery whether successfully to access, and show the dump energy of battery when battery successfully accesses, use for reference.
The utility model embodiment provides a kind of battery electric quantity display device, and described device comprises: battery detecting unit, control unit and electricity display unit;
Described battery detecting unit, for powering to described control unit when detecting battery access, and detects the dump energy information of described battery;
Described control unit, is electrically connected with described battery detecting unit, for receiving the electric energy that described battery exports, and receives the dump energy information of described battery, and produces a control signal according to the dump energy information of described battery;
Described electricity display unit, is electrically connected with described control unit, for showing the dump energy of described battery under the control of said control signal.
Described device also comprises: converting unit, described converting unit one end is electrically connected described battery detecting unit, the other end is electrically connected described control unit, for detecting electric energy when battery accesses, the electric energy that described battery exports being converted to described control unit needs when described battery detecting unit.
Described converting unit also comprises Enable Pin, described battery detecting unit sends an enable signal when detecting the access of described battery, the electric energy that described battery exports for receiving described enable signal, and is converted to the electric energy of described control unit needs by the Enable Pin of described converting unit under the control of described enable signal.
Described converting unit also comprises mode control word circuit, and described mode control word circuit receives for controlling described Enable Pin the enable signal that described battery provides.
Wherein, battery detecting unit comprises positive pole port, negative pole port and information output mouth, described converting unit comprises input port and output port, and described control unit comprises power port, information gathering port and display and control port, and described electricity display unit comprises light-emitting diode;
The positive pole port of described battery detecting unit connects the input port of described converting unit, the negative pole port ground connection of described battery detecting unit; The information output mouth of described battery detecting unit connects the information gathering port of described control unit; The output port of described converting unit connects the power port of described control unit; The display and control port of described control unit is through the light-emitting diode ground connection of described electricity display unit.
Wherein, described mode control word circuit comprises the first electric capacity, the first voltage stabilizing didoe, the first resistance, the second resistance and the 3rd resistance; Described first electric capacity, one end connects the positive pole port of described battery detecting unit, and the other end connects the positive terminal of described first voltage stabilizing didoe, and the negative pole end of described first voltage stabilizing didoe connects the Enable Pin of described converting unit through described 3rd resistance; Described first resistance, one end is connected to the positive pole port of described battery detecting unit, other end ground connection; Described second resistance, one end is connected to node, the other end and ground connection between the positive terminal of described first electric capacity and described first voltage stabilizing didoe.
Wherein, described mode control word circuit also comprises the second voltage stabilizing didoe, and described control unit also comprises general input/output port; Described second voltage stabilizing didoe, its positive terminal connects the general input/output port of described control unit, and negative pole end is connected to the node between the negative pole end of described first voltage stabilizing didoe and described 3rd resistance.
Wherein, described converting unit also comprises: the first pressure reduction port, the second pressure reduction port, inductance, sequential port, the second electric capacity, the 3rd electric capacity and the 4th electric capacity; Described first pressure reduction port is connected with described second pressure reduction port through described inductance; Described sequential port is through described 4th capacity earth; Described second electric capacity one end connects described input port, other end ground connection; Described 3rd electric capacity one end connects described output port, other end ground connection.
The utility model embodiment, battery detecting unit is electrically connected with control unit, and control unit is electrically connected with electricity display unit; When detecting battery access by battery detecting unit, power to described control unit, and detect the dump energy information of described battery; Control unit receives the electric energy that described battery exports, and receives the dump energy information of described battery, and produces a control signal according to the dump energy information of described battery; And then electricity display unit, show the dump energy of described battery under the control of said control signal, whether successfully can access by pilot cell when earphone power amplifier inserts battery, and show the dump energy of battery when battery successfully accesses, use for reference.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment technical scheme, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of battery electric quantity display device structural representation that the utility model embodiment provides;
Fig. 2 is the circuit theory schematic diagram of a kind of battery electric quantity display device that the utility model embodiment provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1 and Fig. 2, Fig. 1 is a kind of battery electric quantity display device structural representation that the utility model embodiment provides, and Fig. 2 is the circuit theory schematic diagram of a kind of battery electric quantity display device that the utility model embodiment provides.
It should be noted that the battery electric quantity display device that the utility model embodiment provides is mainly used in earphone power amplifier, and when being mainly applied to insertion or changing battery, and when successfully accessing, the dump energy of pilot cell, use for reference.
A kind of battery electric quantity display device 100 that the utility model embodiment provides can comprise: battery detecting unit 101, converting unit 102, control unit 103 and electricity display unit 104.Power to described control unit 103 when described battery detecting unit 101 is for detecting battery access, and detect the dump energy information of described battery.Described control unit 103 is electrically connected with described battery detecting unit 101, for receiving the electric energy that described battery exports, and receives the dump energy information of described battery, and produces a control signal according to the dump energy information of described battery.Described electricity display unit 104 is electrically connected with described control unit 103, for showing the dump energy of described battery under the control of said control signal.
Described converting unit 102 one end is electrically connected described battery detecting unit 101, the other end is electrically connected described control unit 103, during for detecting battery access when described battery detecting unit 101, the electric energy that described battery exports is converted to the electric energy required for described control unit 103.In one embodiment, described converting unit 102 can be voltage conversion unit.
Described converting unit 102 also comprises an Enable Pin, described battery detecting unit 101 sends an enable signal when detecting the access of described battery, the Enable Pin of described converting unit 102, for receiving described enable signal, and under the control of described enable signal, the electric energy that described battery exports is converted to the electric energy required for described control unit.
Described converting unit 102 also comprises a mode control word circuit 102a, and described mode control word circuit 102a receives for controlling described Enable Pin the enable signal that described battery provides.Described mode control word circuit 102a one end is electrically connected described battery detecting unit 101, and the other end is electrically connected the Enable Pin EN of described converting unit 102.
In specific implementation, when mode control word circuit 102a is in charged state, the enable signal sent by battery detecting unit 101 is input to Enable Pin EN smoothly, under the control of described enable signal, the electric energy that described battery exports is converted to the electric energy required for described control unit 103 to make described converting unit 102, thus control unit 103 is normally worked, control the dump energy that electricity display unit 104 shows battery.When mode control word circuit 102a is in discharge condition, mode control word circuit breaker, the enable signal that described battery detecting unit 101 sends can not be input to Enable Pin EN, now converting unit 102 quits work, and then control unit 103 and electricity display unit 104 also quit work, no longer show the dump energy of battery.Whole battery electric quantity display device can be controlled only when battery accesses by mode control word circuit 102a, and mode control word circuit 102a be in charging state under show battery dump energy, after mode control word circuit 102a is in discharge condition, stop battery electric quantity display device showing electricity, make pond electric quantity display device need be just always not in running order after battery access, thus can conservation of power resource.
Below the physical circuit of the battery electric quantity display device 100 that the utility model embodiment provides is introduced.Refer to Fig. 2, Fig. 2 is the circuit theory schematic diagram of a kind of battery electric quantity display device that the utility model embodiment provides.
A kind of battery electric quantity display device 100 that the utility model embodiment provides comprises: battery detecting unit 101, converting unit 102, control unit 103 and electricity display unit 104.It should be noted that, converting unit 102 mentioned in the utility model embodiment and control unit 103 specifically can comprise an a voltage conversion chip U1 and microcontroller chip U2 respectively.
Described battery detecting unit 101, for powering to described control unit 103 when detecting battery access, and detects the dump energy information of described battery.
Concrete, described battery detecting unit 101, comprises positive pole port P+, negative pole port P-and information output mouth SCL and SDA as shown in Figure 2.Wherein, positive pole port P+ connects the input port VIN of the voltage conversion chip U1 in converting unit 102, negative pole port P-ground connection, information gathering port SCL and SDA of microcontroller chip U2 in information output mouth SCL and SDA difference connection control unit 103.
It should be noted that, when being built-in with the battery access battery detecting unit 101 of voltameter chip (such as model is the voltameter chip of BQ27541), positive pole port P+ is also connected with the positive pole of battery, negative pole port P-is also connected with the negative pole of battery and ground connection, provides electricity to export electric energy to converting unit 102.Information output mouth SCL with SDA is also connected with the voltameter chip in battery, to detect the dump energy information of the battery that voltameter chip gathers, and sends to information gathering port SCL and SDA of microcontroller chip U2 in control unit 103.
Converting unit 102, one end is electrically connected described battery detecting unit 101, the other end is electrically connected described control unit 103, during for detecting battery access when described battery detecting unit 101 electric energy that described battery exports is converted to the electric energy that described control unit 103 needs.
Concrete, described converting unit 102 comprises voltage conversion chip U1 as shown in Figure 2, described voltage conversion chip U1 comprises input port VIN and output port VOUT, input port VIN is connected with the positive pole port P+ of described battery detecting unit 101, and output port VOUT is connected with the power port VCC of the microcontroller chip U2 of described control unit 103.Input port VIN receives by battery detecting unit 101 electric energy that battery provides, the voltage transitions of this electric energy is a certain appropriate voltage value (as 3.3V) by voltage conversion chip U1, the power port VCC of microcontroller chip U2 is input to, to realize the power supply of microcontroller chip U2 by output port VOUT.
Further, described voltage conversion chip U1 also comprises: the first pressure reduction port L1, the second pressure reduction port L2, inductance L 3, sequential port SS, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4.
Wherein, the first pressure reduction port L1 is connected with described second pressure reduction port L2 through described inductance L 3; Described sequential port SS is through described 4th electric capacity C4 ground connection; Input port VIN described in described second electric capacity C2 mono-termination, other end ground connection; Output port VOUT described in described 3rd electric capacity C3 mono-termination, other end ground connection.
First pressure reduction port L1 is connected with described second pressure reduction port L2 through described inductance L 3, carries out storage and the release of electric energy by inductance L 3, thus the voltage transitions of the electric energy provided by battery is export through output port VOUT after 3.3V.And the second electric capacity C2 mono-termination input port VIN, other end ground connection, the 3rd electric capacity C3 mono-termination output port VOUT, other end ground connection, can reduce the ripple that whole battery electric quantity display device produces upon power-up.
Further, described converting unit 102 also comprises Enable Pin EN, described battery detecting unit 101 sends an enable signal when detecting the access of described battery, the electric energy that described battery exports for receiving described enable signal, and is converted to the electric energy that described control unit 103 needs by the Enable Pin EN of described converting unit 102 under the control of described enable signal.
Further, described converting unit 102 also comprises: mode control word circuit 102a, and described mode control word circuit 102a receives for controlling described Enable Pin EN the enable signal that described battery provides.
Concrete, shown in Figure 2, described mode control word circuit 102a comprises the first electric capacity C1, the first voltage stabilizing didoe D1, the first resistance R1, the second resistance R2 and the 3rd resistance R3.Described first electric capacity C1, one end connects the positive pole port P+ of described battery detecting unit 101, the other end connects the positive terminal of described first voltage stabilizing didoe D1, and the negative pole end of described first voltage stabilizing didoe D1 connects the Enable Pin EN of described converting unit 102 through described 3rd resistance R3; Described first resistance R1, one end is connected to the positive pole port P+ of described battery detecting unit 101, other end ground connection; Described second resistance R2, one end is connected to node, the other end and ground connection between described first electric capacity C1 and the positive terminal of described first voltage stabilizing didoe.
When battery detecting unit 101 detects battery access, this battery charges to the first electric capacity C1 in mode control word circuit 102a, the positive terminal of the first voltage stabilizing didoe D1 be now connected with the first electric capacity C1 is high potential, first voltage stabilizing didoe D1 conducting, the enable signal sent by battery detecting unit 101 by battery is input to Enable Pin EN by this mode control word circuit 102a smoothly, with the electric energy making described converting unit 102 electric energy that described battery exports is converted to described control unit needs under the control of described enable signal.
In addition, the first electric capacity C1 in mode control word circuit 102a also discharges by the second resistance R2, make after C1 powers on a period of time, the positive terminal of the first voltage stabilizing didoe D1 be connected with the first electric capacity C1 is electronegative potential, thus the first voltage stabilizing didoe D1 is ended, mode control word circuit 102a open circuit, battery can not be input to the Enable Pin EN in voltage conversion chip U1 by the enable signal that battery detecting unit 101 sends.Now, voltage conversion chip U1 stops voltage conversion operation, and the microcontroller chip U2 in control unit 103 can not obtain power supply, cisco unity malfunction, and the electricity display unit 104 be therefore connected with microcontroller chip U2 no longer shows.When can play battery access battery detecting unit 101, after dump energy a period of time that microcontroller chip U2 in control unit 103 shows battery according to the dump energy information-driven electricity display unit 104 of described battery, electricity display unit 104 stops display, just user's battery dump energy is pointed out when can realize battery access, electricity display unit 104 can be controlled again quit work in time, in order to avoid continue display waste battery resource.
Optionally, this mode control word circuit 102a also comprises: the second voltage stabilizing didoe D2.The positive terminal of described second voltage stabilizing didoe D2 is connected with the general input/output port GPIO of described microcontroller chip U2, and negative pole end is connected to the node between described first voltage stabilizing didoe D1 and described 3rd resistance R3.Lasting enable signal is provided through the second voltage stabilizing didoe D2 and the 3rd resistance R3 to the voltage conversion chip U1 of converting unit 102 by general input/output port GPIO.
Control unit 103, is electrically connected with described battery detecting unit 101, for receiving the electric energy that described battery exports, and receives the dump energy information of described battery, and produces a control signal according to the dump energy information of described battery.
Control unit 103 is electrically connected with converting unit 102, and is electrically connected with battery detecting unit 101 by converting unit 102.Concrete, described control unit 103 comprises microcontroller chip U2 as shown in Figure 2, and this microcontroller chip U2 comprises: power port VCC, information gathering port SCL and SDA and multiple display and control port PWM (n) (n is positive integer).Wherein, power port VCC is connected with the output port VOUT of voltage conversion chip U1, information gathering port SCL with SDA is connected with information output mouth SCL and SDA of battery detecting unit 101 respectively, and multiple display and control port PWM (n) is connected with the light-emitting diode in electricity display unit 103 respectively.
By the 3.3V signal of telecommunication that power port VCC receiver voltage conversion chip U1 exports, power to give microcontroller chip U2, gathered the dump energy information of the battery that the built-in voltameter chip of battery exports by information gathering port SCL and SDA, display and control port PWM (n) is lighted according to light-emitting diode in the dump energy information control electricity display unit 104 of this battery or extinguishes.
Further, control unit 103 is also for before acquisition dump energy information, and the magnitude of voltage of the power supply received by described control unit 103 or the power supply port of described power supply are determined battery access battery detecting unit event occurs.
In specific implementation, the magnitude of voltage powering to control unit 103 during predeterminable generation different event corresponding to each event, such as, when there is earphone power amplifier power-on event, the voltage value that the power port VCC of control unit 103 receives is 4V, when there is battery access battery detecting unit event, the voltage value that the power port VCC of control unit 103 receives is 3V, like this when control unit 103 receives power supply by power port VCC, just can determine whether battery access battery detecting unit event occurs according to the value of supply power voltage.In addition, the power supply port powering to control unit 103 also during predeterminable generation different event corresponding to each event, such as, when there is earphone power amplifier power-on event, powered to control unit 103 by No. 1 port, when there is battery access battery detecting unit event, powered to control unit 103 by No. 2 ports, control unit 103 just can, according to the power supply port of this power supply, determine whether battery access battery detecting unit event occurs after receiving power supply.After control unit 103 determines that battery access battery detecting unit event occurs, control unit 103 is by information gathering port SCL and SDA, obtain the dump energy information of the battery gathered in voltameter chip, then show the dump energy of battery according to this dump energy information-driven electricity display unit 104.
Further, control unit 103 specifically for: according to described dump energy information, the dump energy calculating described battery accounts for the percentage of the maximum capacitance of storage of described battery; According to described percentage, described electricity display unit 104 is driven to show the dump energy of described battery in the corresponding way.
In specific implementation, the mapping relations between the dump energy of battery and display mode can be pre-set.Example electricity display unit 104 shows the dump energy of battery with 4 light-emitting diodes, and the percentage that dump energy accounts for maximum capacitance of storage can be divided into 4 stages (0 ~ 20%, 21% ~ 60%, 61% ~ 90% and 91% ~ 100%), then can arrange when percentage that dump energy accounts for maximum capacitance of storage is between 0 ~ 20% and light 1 light-emitting diode, 2 light-emitting diodes are lighted when being in 21% ~ 60%, light three light-emitting diodes when being in 61% ~ 95%, be in 91% ~ 100% electricity, four light-emitting diodes.
Electricity display unit 104, is electrically connected with described control unit 103, and shows the dump energy of described battery under the control of said control signal.
Concrete, described electricity display unit 104 comprises multiple light-emitting diodes as shown in Figure 2, display and control port PWM (n) of microcontroller chip U2 in these indicator light one end connection control units 103, other end ground connection, in order to light quantity according to light-emitting diode, the dump energy of display battery.Optionally, this indicative control unit 104 can specifically comprise a display screen, in order to the dump energy of the driving display battery according to control unit 103.
Do one below in conjunction with the operation principle of Fig. 2 to a kind of battery electric quantity display device that the utility model embodiment provides to introduce in detail.
Battery accesses battery electric quantity display device by the battery access point 101a shown in Fig. 2, the built-in voltameter chip of this battery (such as model is the voltameter chip of BQ27541).Now, the positive pole of battery is connected with the positive pole port P+ of battery detecting unit 101, and the negative pole of battery is connected with the negative pole port P-of battery detecting unit 101 and ground connection, to realize to the power supply of battery electric quantity display device.Voltameter chip is connected with information output mouth SCL and SDA of battery detecting unit 101, to be detected the dump energy information of the battery that voltameter chip gathers by this information output mouth SCL and SDA, and exports to microcontroller chip U2.
The positive pole port P+ of battery detecting unit 101 is connected with the input port VIN of voltage conversion chip U1, and is connected with the Enable Pin EN of voltage conversion chip U1 by mode control word circuit 102a.When after battery access battery detecting unit 101, powered to voltage conversion chip U1 by input port VIN, and provide enable signal by Enable Pin EN to voltage conversion chip U1 after mode control word circuit 102a.Voltage conversion chip U1 works in voltage transitions state according to this enable signal, the voltage transitions 3.3V of the electric energy that battery is provided, then be input to the power port VCC of microcontroller chip U2 through the output port VOUT of voltage conversion chip U1, power to give microcontroller chip U2.
Normal work is started after the power port VCC of microcontroller chip U2 obtains the power supply of 3.3V.First detect that current what whether occur is battery access events (being specially battery access battery detecting unit event), the magnitude of voltage of powering to microcontroller chip U2 during predeterminable generation different event corresponding to each event, such as, when there is earphone power amplifier power-on event, the voltage value that the power port VCC of microcontroller chip U2 receives is 4V, when there is battery access battery detecting unit event, the voltage value that the power port VCC of microcontroller chip U2 receives is 3V, like this when microcontroller chip U2 receives power supply by power port VCC, just can determine whether battery access battery detecting unit event occurs according to the value of supply power voltage.Microcontroller chip U2 detect generation for battery access battery detecting unit event time, from information output mouth SCL and SDA battery detecting unit 101, the dump energy information of battery is gathered by information gathering port SCL and SDA, microcontroller chip U2 carries out lighting or extinguishing, to indicate the dump energy of present battery according to this dump energy information-driven light-emitting diode that to be connected with its display and control port PWM (n).
The utility model provides a kind of battery electric quantity display device, and battery is accessed battery electric quantity display device by battery detecting unit by this device, to realize the power supply of this battery electric quantity display device; The voltage transitions of the electric energy also provided by battery by converting unit is a suitable magnitude of voltage (as 3.3V), to power to control unit, makes it normally work; After control unit normally works, when what judgement occurred is battery access battery detecting unit event, control unit obtains the dump energy information of the battery that the built-in voltameter chip of battery gathers by battery detecting unit, and shows the dump energy of battery according to this dump energy information-driven electricity display unit.The mechanical loss of power button can be reduced, and can realize when not starting shooting, during battery access earphone power amplifier, the dump energy of display access battery, use for reference.
Above a kind of battery electric quantity display device disclosed in the utility model is described in detail, above disclosedly be only the utility model preferred embodiment, certainly the interest field of the utility model can not be limited with this, therefore according to the equivalent variations that the utility model claim is done, the scope that the utility model is contained still is belonged to.

Claims (11)

1. a battery electric quantity display device, is characterized in that, described battery electric quantity display device comprises battery detecting unit, control unit and electricity display unit;
Described battery detecting unit, for powering to described control unit when detecting battery access, and detects the dump energy information of described battery;
Described control unit, is electrically connected with described battery detecting unit, for receiving the electric energy that described battery exports, and receives the dump energy information of described battery, and produces a control signal according to the dump energy information of described battery;
Described electricity display unit, is electrically connected with described control unit, for showing the dump energy of described battery under the control of said control signal.
2. device according to claim 1, is characterized in that, described device also comprises:
Converting unit, described converting unit one end is electrically connected described battery detecting unit, the other end is electrically connected described control unit, for detecting electric energy when battery accesses, the electric energy that described battery exports being converted to described control unit needs when described battery detecting unit.
3. device according to claim 2, it is characterized in that, described converting unit also comprises Enable Pin, described battery detecting unit sends an enable signal when detecting the access of described battery, the electric energy that described battery exports for receiving described enable signal, and is converted to the electric energy of described control unit needs by the Enable Pin of described converting unit under the control of described enable signal.
4. device according to claim 3, is characterized in that, described converting unit also comprises mode control word circuit, and described mode control word circuit receives for controlling described Enable Pin the enable signal that described battery provides.
5. device according to claim 1, is characterized in that, described control unit also for:
The magnitude of voltage of the power supply received by described control unit or the power supply port of described power supply are determined battery access battery detecting unit event occurs.
6. device according to claim 1, is characterized in that, described control unit also for:
According to described dump energy information, the dump energy calculating described battery accounts for the percentage of the maximum capacitance of storage of described battery; And according to described percentage, drive described electricity display unit to show the dump energy of described battery in the corresponding way.
7. device according to claim 2, it is characterized in that, described battery detecting unit comprises positive pole port, negative pole port and information output mouth, described converting unit comprises input port and output port, described control unit comprises power port, information gathering port and display and control port, and described electricity display unit comprises light-emitting diode;
The positive pole port of described battery detecting unit connects the input port of described converting unit, the negative pole port ground connection of described battery detecting unit;
The information output mouth of described battery detecting unit connects the information gathering port of described control unit;
The output port of described converting unit connects the power port of described control unit;
The display and control port of described control unit is through the light-emitting diode ground connection of described electricity display unit.
8. device according to claim 7, is characterized in that, described converting unit also comprises Enable Pin, and described Enable Pin is connected with the positive pole port of described battery detecting unit.
9. device according to claim 8, is characterized in that, described converting unit also comprises mode control word circuit, and described mode control word circuit comprises the first electric capacity, the first voltage stabilizing didoe, the first resistance, the second resistance and the 3rd resistance;
Described first electric capacity, one end connects the positive pole port of described battery detecting unit, and the other end connects the positive terminal of described first voltage stabilizing didoe, and the negative pole end of described first voltage stabilizing didoe connects the Enable Pin of described converting unit through described 3rd resistance;
Described first resistance, one end is connected to the positive pole port of described battery detecting unit, other end ground connection;
Described second resistance, one end is connected to node, the other end and ground connection between the positive terminal of described first electric capacity and described first voltage stabilizing didoe.
10. device according to claim 9, is characterized in that, described mode control word circuit also comprises the second voltage stabilizing didoe, and described control unit also comprises general input/output port;
Described second voltage stabilizing didoe, its positive terminal connects the general input/output port of described control unit, and negative pole end is connected to the node between the negative pole end of described first voltage stabilizing didoe and described 3rd resistance.
11. devices according to claim 7, is characterized in that, described converting unit also comprises: the first pressure reduction port, the second pressure reduction port, inductance, sequential port, the second electric capacity, the 3rd electric capacity and the 4th electric capacity;
Described first pressure reduction port is connected with described second pressure reduction port through described inductance;
Described sequential port is through described 4th capacity earth;
Described second electric capacity one end connects described input port, other end ground connection;
Described 3rd electric capacity one end connects described output port, other end ground connection.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104953650A (en) * 2015-06-03 2015-09-30 广东欧珀移动通信有限公司 Battery electric quantity display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104953650A (en) * 2015-06-03 2015-09-30 广东欧珀移动通信有限公司 Battery electric quantity display device
CN104953650B (en) * 2015-06-03 2018-03-02 广东欧珀移动通信有限公司 A kind of battery electric quantity display device

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