CN207440254U - Battery electric quantity checking device and lamps and lanterns - Google Patents
Battery electric quantity checking device and lamps and lanterns Download PDFInfo
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- CN207440254U CN207440254U CN201721078621.7U CN201721078621U CN207440254U CN 207440254 U CN207440254 U CN 207440254U CN 201721078621 U CN201721078621 U CN 201721078621U CN 207440254 U CN207440254 U CN 207440254U
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Abstract
The utility model belongs to electric power detection field, more particularly to a kind of battery electric quantity checking device and lamps and lanterns, including calibration module, is connected with external power supply, and supply voltage is calibrated to battery reference voltage；Acquisition module is connected with the calibration module, is gathered battery both end voltage, and is carried out voltage division processing to cell voltage；Amplification module is connected with the acquisition module, and processing is amplified to the voltage of acquisition module output；Display module is connected with the amplification module, is also connected with the calibration module, is carried out voltage compensation processing to the voltage of amplification module output, and is shown the battery capacity.Above-mentioned battery electric quantity checking device and lamps and lanterns improves the Stability and veracity of ferric phosphate lithium cell voltage detecting.
Description
Technical field
The utility model belongs to electric power detection field, is to be related to a kind of battery electric quantity checking device and lamp more specifically
Tool.
Background technology
In traditional battery electric quantity checking device, the voltage of ferric phosphate lithium cell is 2.5V-3.65V, but most ferric phosphates
The voltage of lithium battery concentrates on 3.21-3.26V, the only voltage range of 0.06V, the lamps and lanterns voltage that ferric phosphate lithium cell is made to power
Detect it is not accurate enough, such as：Power is to bright light during 6W, and cell voltage can be pulled down to 3.2 or so, and microcontroller will error detection battery
Electricity, cause battery capacity detect accuracy it is very low.
Generally, the voltage value of the battery capacity of present lamps and lanterns, is all directly by microcontroller value parameter, does not pass through
Stable processing is crossed, causes the electricity when carrying out battery capacity detection unstable.
Utility model content
To solve the above problems, the utility model provides a kind of battery electric quantity checking device and lamps and lanterns, it is intended to realize and improve
The Stability and veracity of ferric phosphate lithium cell voltage detecting.
The first aspect of the utility model embodiment provides a kind of battery electric quantity checking device, including：
Calibration module is connected with external power supply, and supply voltage is calibrated to battery reference voltage；
Acquisition module is connected with the calibration module, gathers battery both end voltage, and cell voltage is carried out at partial pressure
Reason；
Amplification module is connected with the acquisition module, and processing is amplified to the voltage of acquisition module output；
Display module is connected with the amplification module, is also connected with the calibration module, to amplification module output
Voltage carries out voltage compensation processing, and shows the battery capacity.
Optionally, the calibration module includes：Reference voltage source, input terminal are connected with external power supply, output terminal with it is described
Acquisition module is electrically connected.
Optionally, the calibration module further includes：First resistor, second resistance and the first operational amplifier；
The first resistor first end is connected with the reference voltage source output terminal, and second end connects with the second resistance
It connects；The second resistance other end ground connection；
The normal phase input end of first operational amplifier is connected with the second end of the first resistor, negative-phase input with
The output terminal connection of first operational amplifier, the output terminal of first operational amplifier are also electrically connected with the acquisition module
It connects.
Optionally, the acquisition module includes：Second operational amplifier, 3rd resistor and the 4th resistance；
The second operational amplifier negative-phase input is connected with the output terminal of the calibration module, and normal phase input end passes through
The 3rd resistor is connected with battery, and output terminal is connected with the input terminal of the amplification module, and the second operational amplifier is defeated
Outlet is electrically connected with the negative-phase input of the second operational amplifier；
Described 4th resistance one end is connected with the normal phase input end of the second operational amplifier, other end ground connection.
Optionally, the acquisition module further includes：
5th resistance, one end are connected with the output terminal of the second operational amplifier, and the other end is put with second computing
The negative-phase input connection of big device；
The negative-phase input of the second operational amplifier passes through the 5th resistance and the second operational amplifier
Output terminal is electrically connected.
Optionally, the voltage amplification module includes：3rd operational amplifier, the 6th resistance and the 7th resistance；
The normal phase input end of 3rd operational amplifier is connected with the output terminal of the acquisition module, and negative-phase input leads to
The 7th resistance eutral grounding is crossed, output terminal is connected by the negative-phase input of the 6th resistance and the 3rd operational amplifier
It connects.
Optionally, the display module includes STM8S105K4 chips；
The AIN0/PB0 pins of the STM8S105K4 chips are electrically connected with the output terminal of the amplification module；It is described
VSS pins, VCAP pins, VDD pins, VDDIO pins and the VSSA pins of STM8S105K4 chips are grounded, described
The VDDA pins of STM8S105K4 chips are connected with the output terminal of the calibration module；The VDD pins and the VDDIO pins
It is further adapted for being connected with external power supply.
Optionally, the display module further includes：First capacitance, the second capacitance, the 3rd capacitance, the first inductance and the second electricity
Sense；
First capacitance cathode is connected with the VCAP pins, and cathode is connected with the second capacitance cathode, and described
The cathode ground connection of one capacitance；
The anode of second capacitance is connected with the common port of the VDD pins and the VDDIO pins；
The first inductance first end is connected with the output terminal of the calibration module, and second end connects with the VDDA pins
It connects；
The second inductance first end is connected with the VSSA pins, second end ground connection；
3rd capacitance cathode is connected with the first inductance second end, and the first end of cathode and second inductance connects
It connects.
Optionally, the battery electric quantity checking device further includes：8th resistance and the 4th capacitance；
The first end of 8th resistance is connected with the output terminal of the amplification module, second end and the display module
Input terminal connects；
4th capacitance cathode is connected with the second end of the 8th resistance, cathode ground connection.
The second aspect of the utility model embodiment provides a kind of lamps and lanterns, including bluetooth lamp and battery and with it is described
The battery electric quantity checking device as any one of embodiment first aspect that bluetooth lamp is connected with the battery.
The advantageous effect of battery electric quantity checking device and lamps and lanterns compared with prior art is in the utility model embodiment：
In the present embodiment, supply voltage is calibrated to battery reference voltage by calibration module；Acquisition module gathers battery both end voltage, and
Voltage division processing is carried out to cell voltage；The voltage that amplification module exports acquisition module is amplified processing；Display module is with putting
Big module connection, is also connected with the calibration module, and voltage compensation processing is carried out to the voltage of amplification module output.Pass through calibration
Supply voltage is calibrated to battery reference voltage by module, while display module compensates the cell voltage of detection, realizes and carries
The Stability and veracity of high battery capacity detection.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing is briefly described needed in description, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram for the battery electric quantity checking device that the utility model embodiment provides；
Fig. 2 is the electrical block diagram for the battery electric quantity checking device that the utility model embodiment provides；
Fig. 3 is the electrical block diagram for the reference voltage source that the utility model embodiment provides；
Fig. 4 is the electrical block diagram for the STM8S105K4 chips that the utility model embodiment provides；
Fig. 5 is the realization flow signal that the battery electric quantity checking device that the utility model embodiment provides detects battery capacity
Figure.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and advantageous effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, are further elaborated the utility model.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
Embodiment one
Referring to Fig. 1, a kind of battery electric quantity checking device of the utility model embodiment offer including calibration module 100, is adopted
Collect module 200, amplification module 300 and display module 400.
Calibration module 100, is connected with external power supply, and supply voltage is calibrated to battery reference voltage.
Acquisition module 200 is connected with the calibration module 100, gathers battery both end voltage, and cell voltage is divided
Pressure processing.
Amplification module 300 is connected with the acquisition module 200, and the voltage of the acquisition module 200 output is amplified
Processing.
Display module 400 is connected with the amplification module 300, is also connected with the calibration module 100, to the amplification
The voltage that module 300 exports carries out voltage compensation processing, and shows the battery capacity.
Supply voltage is calibrated to battery reference voltage, acquisition module by above-mentioned battery electric quantity checking device, calibration module 100
200 acquisition battery both end voltages simultaneously carry out voltage division processing to cell voltage, and amplification module 300 exports the acquisition module 200
Voltage be amplified, the voltage that display module 400 exports the amplification module 300 carries out voltage compensation processing.Pass through school
Supply voltage is calibrated to battery reference voltage by quasi-mode block, while display module compensates the cell voltage of detection, realizes
Improve the Stability and veracity of battery capacity detection.
Refering to Fig. 2 and Fig. 3, in one embodiment, calibration module 100 can include reference voltage source U11.Reference voltage source
The input termination external power supply of U11, output terminal are electrically connected with the acquisition module 200.It is that this practicality is new specifically, referring to Fig. 3
The electrical block diagram for the reference voltage source U11 that type embodiment provides, the VIN pins and EN of the reference voltage source U11 draw
Foot connects the external power supply of 5.5V, while is connected with the anode of capacitance C30.The cathode of the capacitance C30 and the reference voltage source
The GND pin connection of U11, the cathode ground connection of capacitance C30.The Vref pins of the reference voltage source U11 and the acquisition module
200 electrical connections, while be connected with the anode of capacitance C31, the cathode ground connection of the capacitance C31.
Further, calibration module 100 can also include first resistor R36, second resistance R41 and the first operational amplifier
U7A.Specifically, the first end of the first resistor R36 is connected with the output terminal of the reference voltage source U11, first resistor R36
Second end be connected with the second resistance R41.The second resistance R41 other ends ground connection.The first operational amplifier U7A
Normal phase input end be connected with the second end of the first resistor R36, the negative-phase input of the first operational amplifier U7A with
The output terminal connection of the first operational amplifier U7A, the output terminal of the first operational amplifier U7A also with the acquisition mould
Block 200 is electrically connected.
Wherein, the first resistor R36 and second resistance R41 has antihypertensive effect, by the reference voltage source U11
Voltage be reduced to the reference voltage of battery.Specifically, the 3.3V voltages of the reference voltage source U11 by first resistor R36 and
After the second resistance R41, output voltage is the reference voltage of battery.Preferably, the reference voltage of battery is in the present embodiment
2.5V。
Refering to Fig. 2, in one embodiment, acquisition module 200 can include second operational amplifier U7B, 3rd resistor R40
With the 4th resistance R42.
Specifically, the negative-phase input of the second operational amplifier U7B and the output terminal of the calibration module 100 connect
It connects, normal phase input end is connected by the 3rd resistor R40 with battery, and the input terminal of output terminal and the amplification module 300 connects
It connects, the output terminal of the second operational amplifier U7B is electrically connected with the negative-phase input of the second operational amplifier U7B.Institute
The normal phase input end that the 4th resistance R42 one end is stated with the second operational amplifier U7B is connected, other end ground connection.Wherein, it is described
3rd resistor R40 and the 4th resistance R42 has partial pressure effect, and the cell voltage of acquisition is divided.
Further, the acquisition module 200 can also include：5th resistance R31 and resistance R37.
Specifically, the 5th resistance R31 one end is connected with the output terminal of the second operational amplifier U7B, the other end and institute
State the negative-phase input connection of second operational amplifier U7B.The negative-phase input of the second operational amplifier U7B passes through described
5th resistance R31 is electrically connected with the output terminal of the second operational amplifier U7B.Resistance R37 one end and the calibration module 100
Electrical connection, the other end are connected with the negative-phase input of the second operational amplifier U7B.
Refering to Fig. 2, in one embodiment, amplification module 300 can include：3rd operational amplifier U7D, the 6th resistance
R32 and the 7th resistance R34.
Specifically, the normal phase input end of the 3rd operational amplifier U7D and the output terminal of the acquisition module 200 connect
It connects, the 3rd operational amplifier U7D negative-phase inputs are grounded by the 7th resistance R34, the 3rd operational amplifier U7D output terminals
It is connected by the 6th resistance R32 with the negative-phase input of the 3rd operational amplifier U7D.In addition, amplification module 300 can be with
Including resistance R39, described resistance R39 one end is connected with 200 output terminal of acquisition module, and the other end is put with the 3rd computing
Big device U7D normal phase input ends connection.
Wherein, the cell voltage that the 6th resistance R32 and the 7th resistance R34 export the acquisition module 200
It is amplified effect.The cell voltage of 300 positive ratio enlargement acquisition module 200 of amplification module output, passes through the 6th resistance R32
The cell voltage that the acquisition module 200 exports is amplified with the 7th resistance R34, it is preferred that magnification ratio is (R32/
R34)+1。
In one embodiment, display module 400 can include STM8S105K4 chips.
Specifically, referring to Fig. 4, for the circuit structure signal for the STM8S105K4 chips that the utility model embodiment provides
Figure.The AIN0/PB0 pins of the STM8S105K4 chips are electrically connected with the output terminal of the amplification module 300.It is described
VSS pins, VCAP pins, VDD pins, VDDIO pins and the VSSA pins of STM8S105K4 chips are grounded, described
The VDDA pins of STM8S105K4 chips are connected with the output terminal of the calibration module 100.The VDD pins and the VDDIO
Pin is further adapted for being connected with external power supply.
Further, display module 400 can also include the first capacitance C4, the second capacitance C6, the 3rd capacitance C7, the first electricity
Feel L2 and the second inductance L3.
Specifically, the anode of the first capacitance C4 is connected with the VCAP pins of the STM8S105K4 chips, cathode with
The second capacitance C6 cathode connection, the cathode ground connection of the first capacitance C4.The anode of the second capacitance C6 with it is described
The VDD pins of STM8S105K4 chips are connected with the common port of the VDDIO pins.The first end of the first inductance L2 and institute
The output terminal connection of acquisition module 100 is stated, second end is connected with the VDDA pins of the STM8S105K4 chips.Second electricity
The first end of sense L3 is connected with the VSSA pins, second end ground connection.The anode of the 3rd capacitance C7 and first inductance
L2 second ends connect, and cathode is connected with the first end of the second inductance L3.
Optionally, the value of the first capacitance C4 provided in this embodiment is 1uF, and the value of the second capacitance C6 is 0.1uF, and the 3rd is electric
Hold the value of C7 for 0.1uF, the value of the first inductance L2 is 10mH, and the value of the second inductance L3 is 10mH.
Further, the battery electric quantity checking device can also include the 8th resistance R38 and the 4th capacitance C24.Wherein,
The first end of the 8th resistance R38 is connected with the output terminal of the amplification module 300, the second end of the 8th resistance R38
It is connected with the input terminal of the display module 400.The anode of the 4th capacitance C24 and the second end of the 8th resistance R38
Connection, cathode ground connection.
Realize that the detailed process of detection battery capacity illustrates, and is described in detail such as to the battery electric quantity checking device below
Under：
S501, the 3.3V voltage calibrations of reference voltage U11 are battery reference voltage 2.5V by calibration module 100, and are inputted
To acquisition module 200.
Reference voltage U11 is 3.3V, is connected with external power supply, and voltage passes through first resistor R36 and second resistance R41, will
Reference voltage is reduced to battery reference voltage.For example, the voltage range of ferric phosphate lithium cell is 2.5V-3.65V, reference voltage is
Reference voltage is reduced to battery reference voltage 2.5V by 2.5V, i.e. calibration module 100, and the steady of detection voltage is determined by reference voltage
It is fixed.
S502, acquisition module 200 gather cell voltage, according to 3rd resistor R40 and the 4th resistance R42 to cell voltage into
Row partial pressure acts on, and the cell voltage after partial pressure is inputted amplification module 300.
The battery reference voltage that calibration module 100 exports enters acquisition module 200, while acquisition module by resistance R37
200 acquisition battery both end voltages.Acquisition module 200 by 3rd resistor R40 and the 4th resistance R42 by the cell voltage of acquisition into
Row voltage division processing, to stablize cell voltage.Acquisition module 200 is by the battery reference voltage and the battery after voltage division processing
Control source second operational amplifier U7B, the second operational amplifier U7B is again by voltage output to amplification module 300.
S503, the electricity that amplification module 300 exports acquisition module 200 according to the 6th resistance R32 and the 7th resistance R34 resistance value
Cell voltage is amplified processing, and is input to display module 400.
Amplification module 300 receives the voltage that acquisition module 200 exports.300 positive ratio enlargement acquisition module of amplification module
The cell voltage of 200 outputs, the cell voltage for being exported the acquisition module 200 by the 6th resistance R32 and the 7th resistance R34
It is amplified, it is preferred that magnification ratio is (R32/R34)+1.By the enhanced processing of amplification module 300, cell voltage is put
It is 2.5-3.65V on a large scale.
S504, the battery that display module 400 exports amplification module 300 according to the battery reference voltage of calibration module 100
Voltage carries out voltage compensation processing, and shows the battery capacity of detection.
Voltage by the enhanced processing of amplification module 300 enters display module 400 by R38.The display module 400
STM8S105K4 chips the analog voltage signal of continuous variable is converted into discrete digital voltage signal.With calibration module 100
Connection receives the battery reference voltage, and the STM8S105K4 chips put the process of reception according to the battery reference voltage
The cell voltage handled greatly carries out voltage compensation, and shows the battery capacity of detection, improves the accuracy of battery capacity detection.
In the present embodiment, supply voltage is calibrated to battery reference voltage, acquisition module acquisition battery two by calibration module
Terminal voltage, and voltage division processing is carried out to cell voltage, the voltage that amplification module exports the acquisition module is amplified processing,
Display module is connected with the amplification module, is also connected with the calibration module, using STM8S105K4 chips, for described
The voltage of amplification module output carries out voltage compensation processing, realizes the Stability and veracity for improving battery capacity detection.
Embodiment two
A kind of lamps and lanterns are present embodiments provided, are connected including bluetooth lamp and battery and with the bluetooth lamp and the battery
Any battery electric quantity detection apparatus as described in embodiment one connect, and with possessed by above-mentioned battery electric quantity checking device
Advantageous effect.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of battery electric quantity checking device, which is characterized in that including：
Calibration module is connected with external power supply, and supply voltage is calibrated to battery reference voltage；
Acquisition module is connected with the calibration module, is gathered battery both end voltage, and is carried out voltage division processing to cell voltage；
Amplification module is connected with the acquisition module, and processing is amplified to the voltage of acquisition module output；
Display module is connected with the amplification module, is also connected with the calibration module, to the voltage of amplification module output
Voltage compensation processing is carried out, and shows the battery capacity.
2. battery electric quantity checking device as described in claim 1, which is characterized in that the calibration module includes：Reference voltage
Source, input terminal are connected with external power supply, and output terminal is electrically connected with the acquisition module.
3. battery electric quantity checking device as claimed in claim 2, which is characterized in that the calibration module further includes：First electricity
Resistance, second resistance and the first operational amplifier；
The first end of the first resistor is connected with the reference voltage source output terminal, and second end connects with described second resistance one end
It connects；
The second resistance other end ground connection；
The normal phase input end of first operational amplifier is connected with the second end of the first resistor, negative-phase input with it is described
The output terminal connection of first operational amplifier, the output terminal of first operational amplifier are also electrically connected with the acquisition module.
4. battery electric quantity checking device as described in claim 1, which is characterized in that the acquisition module includes：Second computing
Amplifier, 3rd resistor and the 4th resistance；
The negative-phase input of the second operational amplifier is connected with the output terminal of the calibration module, and normal phase input end passes through institute
It states 3rd resistor to be connected with the battery, output terminal is connected with the input terminal of the amplification module, the second operational amplifier
Negative-phase input of the output terminal also with the second operational amplifier be electrically connected；
Described 4th resistance one end is connected with the normal phase input end of the second operational amplifier, other end ground connection.
5. battery electric quantity checking device as claimed in claim 4, which is characterized in that the acquisition module further includes：
5th resistance, one end are connected with the output terminal of the second operational amplifier, the other end and the second operational amplifier
Negative-phase input connection；
The output that the negative-phase input of the second operational amplifier passes through the 5th resistance and the second operational amplifier
End electrical connection.
6. battery electric quantity checking device as described in claim 1, which is characterized in that the voltage amplification module includes：3rd
Operational amplifier, the 6th resistance and the 7th resistance；
The normal phase input end of 3rd operational amplifier is connected with the output terminal of the acquisition module, and negative-phase input passes through institute
The 7th resistance eutral grounding is stated, output terminal is connected by the 6th resistance with the negative-phase input of the 3rd operational amplifier.
7. battery electric quantity checking device as described in claim 1, which is characterized in that the display module includes STM8S105K4
Chip；
The AIN0/PB0 pins of the STM8S105K4 chips are electrically connected with the output terminal of the amplification module；It is described
VSS pins, VCAP pins, VDD pins, VDDIO pins and the VSSA pins of STM8S105K4 chips are grounded, described
The VDDA pins of STM8S105K4 chips are connected with the output terminal of the calibration module；The VDD pins and the VDDIO pins
It is further adapted for being connected with external power supply.
8. battery electric quantity checking device as claimed in claim 7, which is characterized in that the display module further includes：First electricity
Appearance, the second capacitance, the 3rd capacitance, the first inductance and the second inductance；
The anode of first capacitance is connected with the VCAP pins, and cathode is connected with the cathode of second capacitance, and described
The cathode ground connection of one capacitance；
The anode of second capacitance is connected with the common port of the VDD pins and the VDDIO pins；
The first end of first inductance is connected with the output terminal of the calibration module, and second end is connected with the VDDA pins；
The first end of second inductance is connected with the VSSA pins, second end ground connection；
The anode of 3rd capacitance is connected with the second end of first inductance, and the first end of cathode and second inductance connects
It connects.
9. such as claim 1 to 8 any one of them battery electric quantity checking device, which is characterized in that the battery capacity detection
Device further includes：8th resistance and the 4th capacitance；
The first end of 8th resistance is connected with the output terminal of the amplification module, second end and the input of the display module
End connection；
The anode of 4th capacitance is connected with the second end of the 8th resistance, cathode ground connection.
10. a kind of lamps and lanterns, which is characterized in that be connected including bluetooth lamp and battery and with the bluetooth lamp and the battery
Battery electric quantity checking device as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078621.7U CN207440254U (en) | 2017-08-25 | 2017-08-25 | Battery electric quantity checking device and lamps and lanterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078621.7U CN207440254U (en) | 2017-08-25 | 2017-08-25 | Battery electric quantity checking device and lamps and lanterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207440254U true CN207440254U (en) | 2018-06-01 |
Family
ID=62300973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721078621.7U Active CN207440254U (en) | 2017-08-25 | 2017-08-25 | Battery electric quantity checking device and lamps and lanterns |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479001A (en) * | 2017-08-25 | 2017-12-15 | 深圳金仕盾照明科技有限公司 | A kind of battery electric quantity checking device and light fixture |
| CN115113089A (en) * | 2022-06-30 | 2022-09-27 | 苏州浪潮智能科技有限公司 | Electric quantity monitoring device, power supply and server |
-
2017
- 2017-08-25 CN CN201721078621.7U patent/CN207440254U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479001A (en) * | 2017-08-25 | 2017-12-15 | 深圳金仕盾照明科技有限公司 | A kind of battery electric quantity checking device and light fixture |
| CN115113089A (en) * | 2022-06-30 | 2022-09-27 | 苏州浪潮智能科技有限公司 | Electric quantity monitoring device, power supply and server |
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