CN206533164U - Charging and discharging lithium battery battery capacity indication circuit - Google Patents
Charging and discharging lithium battery battery capacity indication circuit Download PDFInfo
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- CN206533164U CN206533164U CN201720192522.5U CN201720192522U CN206533164U CN 206533164 U CN206533164 U CN 206533164U CN 201720192522 U CN201720192522 U CN 201720192522U CN 206533164 U CN206533164 U CN 206533164U
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of charging and discharging lithium battery battery capacity indication circuit, including voltage sampling circuit, comparison circuit, LED indicating circuit and reference voltage-stabilizing circuit, the reference voltage-stabilizing circuit is used to provide reference voltage to comparison circuit, the voltage sampling circuit has multiple sampled points, for carrying out partial pressure sampling to lithium battery voltage, and the sampled voltage for respectively gathering each sampled point passes to comparison circuit, the comparison circuit is used to each sampled voltage being compared with reference voltage respectively, output control signal is to LED indicating circuit respectively, the energization or power-off of each light emitting diode in LED indicating circuit are controlled respectively, electric quantity of lithium battery grade is shown by the number for the light emitting diode lighted.It is by many experiments, the accurate volume change of reflection circuit discharge and recharge, dependable performance and cost is relatively low.
Description
Technical field
The utility model is related to charging and discharging lithium battery battery capacity indication field, and more particularly to a kind of charging and discharging lithium battery electricity refers to
Show circuit.
Background technology
Either volume change of the existing charge-discharge circuit circuit without accurately instruction charging and discharging lithium battery, or circuit structure
Complexity, cost is too high, and the competitiveness of product in market is low.
The content of the invention
The purpose of this utility model is that there is provided a kind of charging and discharging lithium battery battery capacity indication for the corresponding deficiency of prior art
Circuit, it is connected with charged lithium cells, and it passes through the volume change of many experiments, precisely reflection circuit discharge and recharge, dependable performance
And cost is relatively low.
The purpose of this utility model is realized using following proposal：A kind of charging and discharging lithium battery battery capacity indication circuit, bag
Voltage sampling circuit, comparison circuit, LED indicating circuit and reference voltage-stabilizing circuit are included, the reference voltage-stabilizing circuit can including three ends
Tune shunt reference source U2, the plus earth of the three ends adjustable shunt reference source U2, the three ends adjustable shunt reference source U2's
It is connected with reference to pole one end respectively with the 16th resistance R16, the 17th resistance R17 one end, the 17th resistance R17 other end
Ground connection, the 16th resistance R16 other end negative electrode respectively with three end adjustable shunt reference source U2, the one of the 15th resistance R15
End connection, the other end of the 15th resistance R15 is connected with lithium battery anode, the moon of the three ends adjustable shunt reference source U2
Pole is connected with comparison circuit, and for providing reference voltage to comparison circuit, the voltage sampling circuit includes being connected on lithium battery
Sampled point is set respectively between multiple resistance between positive pole and ground, two connected resistance, and the comparison circuit includes multiple
Amplifier, the in-phase input end of each first amplifier connects reference voltage through resistance respectively, and the inverting input of each amplifier is respectively through electricity
Resistance is connected with each sampled point of voltage sampling circuit, the output end of each amplifier respectively with each input in LED indicating circuit
Connection, the LED indicating circuit includes multiple light emitting diodes, and each light emitting diode is in series with a resistor in lithium battery anode respectively
Between the output end of each comparison circuit, by comparison circuit control light emitting diode energization or power-off, lithium battery anode with
The first light emitting diode D1 and the 11st resistance R11 is also in series between ground.
The voltage sampling circuit include being connected on first resistor R1 between lithium battery anode and ground, second resistance R2,
3rd resistor R3, the 4th resistance R4, provided with the first sampled point V1, described second between the first resistor R1 and second resistance R2
The second sampled point V2 is provided between resistance R2 and 3rd resistor R3, the 3rd is provided between the 3rd resistor R3 and the 4th resistance R4
Sampled point V3.
The lithium battery anode is grounded through the first electric capacity C1, and the first sampled point V1 is grounded through the 5th electric capacity C5, described
Second sampled point V2 is grounded through the 4th electric capacity C4, and the 3rd sampled point V3 is grounded through the 3rd electric capacity C3.Electric capacity act as filtering,
Greatly reduce the flicker of the boundary's point LED of comparison voltage zero.
The comparison circuit includes the first amplifier U1A, the second amplifier U1B, the 3rd amplifier U1C, the first amplifier U1A's
In-phase input end is through the 6th resistance R6 connection reference voltages, and the first amplifier U1A inverting input is through the 5th resistance R5 and voltage
The first sampled point connection of sample circuit, the first amplifier U1A output end and the first input end of LED indicating circuit are connected, institute
The second amplifier U1B in-phase input end is stated through the 8th resistance R8 connection reference voltages, the second amplifier U1B inverting input is through
The second sampled point connection of seven resistance R7 and voltage sampling circuit, the second amplifier U1B output end and the second of LED indicating circuit
Input connect, the in-phase input end of the 3rd amplifier U1C through the tenth resistance R10 connection reference voltages, the 3rd amplifier U1C's
Inverting input through the tenth resistance R10 and voltage sampling circuit the 3rd sampled point connection, the 3rd amplifier U1C output end with
The 3rd input connection of LED indicating circuit.
The LED indicating circuit includes the second light emitting diode D2, the 3rd light emitting diode D3, the 4th light emitting diode
D4, the second light emitting diode D2 and the 12nd resistance R12 are connected on the first output end of lithium battery anode and comparison circuit
Between, the 3rd light emitting diode D3 and the 13rd resistance R13 is connected on the second output of lithium battery anode and comparison circuit
Between end, it is the 3rd defeated that the 4th light emitting diode D4 and the 14th resistance R14 is connected on lithium battery anode and comparison circuit
Go out between end.
The negative electrode of the three ends adjustable shunt reference source U2 is grounded through the second electric capacity C2.
The utility model this have the advantage that：Because charging and discharging lithium battery battery capacity indication circuit of the present utility model includes electricity
Sample circuit, comparison circuit, LED indicating circuit and reference voltage-stabilizing circuit are pressed, the reference voltage-stabilizing circuit is used for comparison circuit
Reference voltage is provided, the voltage sampling circuit has multiple sampled points, for carrying out partial pressure sampling to lithium battery voltage, and divided
The sampled voltage that each sampled point is not gathered passes to comparison circuit, the comparison circuit be used for by each sampled voltage respectively with base
Quasi- voltage is compared, and output control signal controls each in LED indicating circuit luminous two respectively to LED indicating circuit respectively
The energization or power-off of pole pipe, show electric quantity of lithium battery grade by the number for the light emitting diode lighted, make the utility model can
Visual indication is provided for various electric quantity of lithium batteries, with very high practicality, can be widely popularized.When lithium battery is in charging
When, the first light emitting diode is lit, with the increase of charging voltage, the second light emitting diode, the 3rd light emitting diode and
Four light emitting diodes are fired in sequence.Above-mentioned electric quantity of lithium battery indicating circuit, the charge condition of lithium battery can be measured in real time simultaneously
User is showed by light emitting diode, user is understood the electric quantity change situation of lithium battery in real time.Also, reference voltage-stabilizing circuit
Parameter adjustable, correspondence increase can increase display hop count using resistance, comparison circuit, light emitting diode, can similarly reduce section
Number.
When charging, D1 is lighted this charging and discharging lithium battery battery capacity indication circuit immediately, can play charging indicative function.This lithium electricity
Pond charge/discharge electricity amount indicating circuit uses TL431 circuits, simplifies reference voltage circuit, can more flexible voltage set, from
And simplify the debugging of circuit.
The setting section of the utility model sampled voltage, by lot of experiments, fills to the battery pack that the utility model is used
Discharge curve is accurately measured, and the parameter can accurately reflect the amount of battery.The utility model is by many experiments, precisely
Reflect the volume change of circuit discharge and recharge, dependable performance and cost is relatively low.
Brief description of the drawings
Fig. 1 is the physical circuit figure of battery capacity indication circuit of the present utility model.
Embodiment
Referring to Fig. 1, a kind of charging and discharging lithium battery battery capacity indication circuit, a kind of charging and discharging lithium battery battery capacity indication circuit, bag
Voltage sampling circuit, comparison circuit, LED indicating circuit and reference voltage-stabilizing circuit are included, the reference voltage-stabilizing circuit can including three ends
Tune shunt reference source U2, the plus earth of the three ends adjustable shunt reference source U2, the three ends adjustable shunt reference source U2's
It is connected with reference to pole one end respectively with the 16th resistance R16, the 17th resistance R17 one end, the 17th resistance R17 other end
Ground connection, the 16th resistance R16 other end negative electrode respectively with three end adjustable shunt reference source U2, the one of the 15th resistance R15
End connection, the other end of the 15th resistance R15 is connected with lithium battery anode.Preferably, the three ends adjustable shunt benchmark
Source U2 negative electrode is grounded through the second electric capacity C2.The negative electrode of the three ends adjustable shunt reference source U2 is connected with comparison circuit, is used for
Reference voltage is provided to comparison circuit, the voltage sampling circuit includes the multiple electricity being connected between lithium battery anode and ground
Sampled point is set respectively between resistance, two connected resistance, and the comparison circuit includes multiple amplifiers, the same phase of each first amplifier
Input connects reference voltage through resistance respectively, the inverting input of each amplifier respectively adopting through resistance and voltage sampling circuit respectively
Sampling point is connected, and the output end of each amplifier is connected with each input in LED indicating circuit respectively, the LED indicating circuit bag
Include multiple light emitting diodes, each light emitting diode respectively the output end in series with a resistor in lithium battery anode and each comparison circuit it
Between, the energization or power-off of light emitting diode are controlled by comparison circuit, first is also in series between lithium battery anode and ground and is lighted
Diode D1 and the 11st resistance R11.
Adopted in the number and voltage sampling circuit of the light emitting diode controlled in the LED indicating circuit by comparison circuit
The number of sampling point is equal, and corresponds.The number of sampled point is three in the voltage sampling circuit of the present embodiment, and LED is indicated
The number of the light emitting diode controlled in circuit by comparison circuit is three, respectively the second light emitting diode D2, the 3rd hair
Optical diode D3, the 4th light emitting diode D4.The voltage sampling circuit includes the be connected between lithium battery anode and ground
One resistance R1, second resistance R2,3rd resistor R3, the 4th resistance R4, are provided between the first resistor R1 and second resistance R2
First sampled point V1, between the second resistance R2 and 3rd resistor R3 provided with the second sampled point V2, the 3rd resistor R3 with
The 3rd sampled point V3 is provided between 4th resistance R4.
The comparison circuit includes the first amplifier U1A, the second amplifier U1B, the 3rd amplifier U1C, the first amplifier U1A's
In-phase input end is through the 6th resistance R6 connection reference voltages, and the first amplifier U1A inverting input is through the 5th resistance R5 and voltage
The first sampled point connection of sample circuit, the first amplifier U1A output end and the second light emitting diode D2's of LED indicating circuit
Ground is connected, and the in-phase input end of the second amplifier U1B is through the 8th resistance R8 connection reference voltages, and the second amplifier U1B's is anti-phase
Second sampled point connection of the input through the 7th resistance R7 and voltage sampling circuit, the second amplifier U1B output end and LED are indicated
3rd light emitting diode D3 of circuit ground connection, the in-phase input end of the 3rd amplifier U1C is through the tenth resistance R10 linkers
Quasi- voltage, the 3rd amplifier U1C threeth sampled point connection of the inverting input through the tenth resistance R10 and voltage sampling circuit, the
Three amplifier U1C output end and the 3rd light emitting diode D3 of LED indicating circuit ground connection.The utility model uses LM324
The circuit parameter that chip matches, driving is reliable.
The LED indicating circuit includes the second light emitting diode D2, the 3rd light emitting diode D3, the 4th light emitting diode
D4, the second light emitting diode D2 and the 12nd resistance R12 are connected on the first amplifier U1A of lithium battery anode and comparison circuit
Output end between, the 3rd light emitting diode D3 and the 13rd resistance R13 is connected on lithium battery anode and comparison circuit
Between second amplifier U1B output end, the 4th light emitting diode D4 and the 14th resistance R14 be connected on lithium battery anode with
Between 3rd amplifier U1C of comparison circuit output end.
Operation principle of the present utility model is：During charging, lithium battery has voltage, and light emitting diode D1 two ends have satisfaction to turn on
The voltage difference of condition, directly lights the first light emitting diode D1.Voltage sampling circuit is sampled to lithium battery voltage.With lithium
The raising of cell voltage, V1, V2, V3 are proportional to be improved, when V1 magnitudes of voltage exceed benchmark voltage stabilizing VREF, i.e. amplifier U1A negative terminals
Voltage is higher than the positive terminal voltages of amplifier U1A, and amplifier U1A is output as low level, and light emitting diode D2 two ends, which have, meets turn-on condition
Voltage difference, light emitting diode D2 conductings are lighted.Voltage continues to raise, when V2 magnitudes of voltage exceed benchmark voltage stabilizing VREF, i.e. amplifier
U1B negative terminal voltages are higher than the positive terminal voltages of amplifier U1B, and amplifier U1B is output as low, and light emitting diode D3 two ends meet turn-on condition
Voltage difference, light emitting diode D3 conducting light.Voltage continues to raise, and when V3 magnitudes of voltage exceed benchmark voltage stabilizing VREF, that is, transports
U1C negative terminal voltages are put higher than the positive terminal voltages of amplifier U1C, amplifier U1C is output as low, and there is satisfaction conducting bar at light emitting diode D4 two ends
The voltage difference of part, light emitting diode D4 conductings are lighted.V1, V2, V3 are the voltage comparison points for lighting diode D2, D3, D4, work as electricity
When pressure is higher than reference voltage VREF, corresponding points brighten the hair optical diode.Corresponding lithium electricity can be determined from electric resistance partial pressure ratio circuit
Cell voltage.Lithium battery voltage correspond to the number of corresponding electricity.Electricity just can intuitively be shown by the light emitting diode lighted
Number.
Set 4 light emitting diodes that electricity is divided into five sections, the voltage that light emitting diode D1 is lighted is low, correspondence electricity is low,
First paragraph electricity is indicated, main function is that charging is indicated.Light emitting diode D2 is lighted, and indicates second segment electricity.Luminous two
Pole pipe D3 is lighted, and indicates the 3rd section of electricity.Light emitting diode D4 is lighted, and indicates the 4th section of electricity.Light emitting diode D4 points
After bright, continue to charge, the 5th section of electricity can be charged.
The utility model is connected to the two ends of lithium battery, can be provided intuitively for various electric quantity of lithium batteries by LED light
Instruction, with very high practicality.The utility model can be used for the electricity of rechargeable battery such as lithium battery, plumbic acid lithium battery
Indicate, such as charging of solar recharging, wind energy, mechanical energy charging.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, it is clear that this area
Technical staff can to the utility model carry out it is various change and modification without departing from spirit and scope of the present utility model.This
Sample, if these modifications and variations of the present utility model belong to the utility model claim and its equivalent technologies scope it
Interior, then the utility model is also intended to comprising including these changes and modification.
Claims (6)
1. a kind of charging and discharging lithium battery battery capacity indication circuit, it is characterised in that：Refer to including voltage sampling circuit, comparison circuit, LED
Show circuit and reference voltage-stabilizing circuit, the reference voltage-stabilizing circuit includes three end adjustable shunt reference sources (U2), and three end is adjustable
The plus earth of shunt reference source (U2), the reference pole of three end adjustable shunt reference source (U2) respectively with the 16th resistance
(R16) one end, one end connection of the 17th resistance (R17), the other end ground connection of the 17th resistance (R17), the 16th resistance
(R16) other end negative electrode respectively with three end adjustable shunt reference sources (U2), one end of the 15th resistance (R15) are connected, institute
The other end for stating the 15th resistance (R15) is connected with lithium battery anode, the negative electrode of three end adjustable shunt reference source (U2) with
Comparison circuit is connected, and for providing reference voltage to comparison circuit, the voltage sampling circuit includes being connected on lithium battery anode
Sampled point is set respectively between multiple resistance between ground, two connected resistance, and the comparison circuit includes multiple amplifiers,
The in-phase input end of each first amplifier connects reference voltage through resistance respectively, and the inverting input of each amplifier is respectively through resistance and electricity
Each sampled point connection of sample circuit is pressed, the output end of each amplifier is connected with each input in LED indicating circuit respectively, institute
Stating LED indicating circuit includes multiple light emitting diodes, and each light emitting diode is in series with a resistor in lithium battery anode and each ratio respectively
Compared between the output end of circuit, the energization or power-off of light emitting diode are controlled by comparison circuit, between lithium battery anode and ground
Also it is in series with the first light emitting diode (D1) and the 11st resistance (R11).
2. charging and discharging lithium battery battery capacity indication circuit according to claim 1, it is characterised in that：The voltage sampling circuit
Including the first resistor (R1) being connected between lithium battery anode and ground, second resistance (R2), 3rd resistor (R3), the 4th resistance
(R4) the first sampled point V1, the second resistance (R2) and the, are provided between the first resistor (R1) and second resistance (R2)
The second sampled point V2 is provided between three resistance (R3), provided with the 3rd sampling between the 3rd resistor (R3) and the 4th resistance (R4)
Point V3.
3. charging and discharging lithium battery battery capacity indication circuit according to claim 2, it is characterised in that：The lithium battery anode warp
First electric capacity (C1) is grounded, and the first sampled point V1 is grounded through the 5th electric capacity (C5), and the second sampled point V2 is through the 4th electricity
Hold (C4) ground connection, the 3rd sampled point V3 is grounded through the 3rd electric capacity (C3).
4. charging and discharging lithium battery battery capacity indication circuit according to claim 1, it is characterised in that：The comparison circuit includes
First amplifier U1A, the second amplifier U1B, the 3rd amplifier U1C, the in-phase input end of the first amplifier U1A connect through the 6th resistance R6
Reference voltage is connect, the first amplifier U1A first sampled point of the inverting input through the 5th resistance R5 and voltage sampling circuit is connected,
First amplifier U1A output end and the first input end of LED indicating circuit are connected, the in-phase input end of the second amplifier U1B
Through the 8th resistance R8 connection reference voltages, the second amplifier U1B inverting input is through the 7th resistance R7 and voltage sampling circuit
Second sampled point is connected, and the second amplifier U1B output end and the second input of LED indicating circuit are connected, the 3rd amplifier
U1C in-phase input end is through the tenth resistance R10 connection reference voltages, and the 3rd amplifier U1C inverting input is through the tenth resistance R10
It is connected with the 3rd sampled point of voltage sampling circuit, the 3rd amplifier U1C output end and the 3rd input of LED indicating circuit connect
Connect.
5. charging and discharging lithium battery battery capacity indication circuit according to claim 1, it is characterised in that：The LED indicating circuit
Including the second light emitting diode D2, the 3rd light emitting diode D3, the 4th light emitting diode D4, the second light emitting diode D2 with
12nd resistance R12 is connected between lithium battery anode and the first output end of comparison circuit, the 3rd light emitting diode D3
It is connected on the 13rd resistance R13 between lithium battery anode and the second output end of comparison circuit, the 4th light emitting diode
D4 and the 14th resistance R14 are connected between lithium battery anode and the 3rd output end of comparison circuit.
6. charging and discharging lithium battery battery capacity indication circuit according to claim 1, it is characterised in that：Three end adjustable shunt
The negative electrode of a reference source (U2) is grounded through the second electric capacity (C2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192522.5U CN206533164U (en) | 2017-03-01 | 2017-03-01 | Charging and discharging lithium battery battery capacity indication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192522.5U CN206533164U (en) | 2017-03-01 | 2017-03-01 | Charging and discharging lithium battery battery capacity indication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533164U true CN206533164U (en) | 2017-09-29 |
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ID=59915054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720192522.5U Active CN206533164U (en) | 2017-03-01 | 2017-03-01 | Charging and discharging lithium battery battery capacity indication circuit |
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| CN (1) | CN206533164U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071556A (en) * | 2019-06-04 | 2019-07-30 | 南京矽力杰半导体技术有限公司 | Battery capacity indication circuit and indicating means |
| CN112186832A (en) * | 2020-09-07 | 2021-01-05 | 安徽绿沃循环能源科技有限公司 | Lithium battery charging and discharging indicating circuit |
| CN113783274A (en) * | 2021-09-24 | 2021-12-10 | 合肥国轩高科动力能源有限公司 | Power supply designed based on battery utilization in echelon |
-
2017
- 2017-03-01 CN CN201720192522.5U patent/CN206533164U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071556A (en) * | 2019-06-04 | 2019-07-30 | 南京矽力杰半导体技术有限公司 | Battery capacity indication circuit and indicating means |
| CN112186832A (en) * | 2020-09-07 | 2021-01-05 | 安徽绿沃循环能源科技有限公司 | Lithium battery charging and discharging indicating circuit |
| CN113783274A (en) * | 2021-09-24 | 2021-12-10 | 合肥国轩高科动力能源有限公司 | Power supply designed based on battery utilization in echelon |
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