CN205595825U - Rifle indicating circuit charges - Google Patents
Rifle indicating circuit charges Download PDFInfo
- Publication number
- CN205595825U CN205595825U CN201620172628.4U CN201620172628U CN205595825U CN 205595825 U CN205595825 U CN 205595825U CN 201620172628 U CN201620172628 U CN 201620172628U CN 205595825 U CN205595825 U CN 205595825U
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- Prior art keywords
- voltage
- resistance
- electric capacity
- pin
- intervalometers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a rifle indicating circuit charges, include: the steady voltage sub circuit, it receives charging voltage to charging voltage based on receiving produces a stabilizing the voltage, the voltage transformation sub circuit, its receipt stabilizing the voltage, and based on stabilizing the voltage produces a square wave voltage who has a duty cycle, and the instruction sub circuit, its utilization square wave voltage gives out light. Through utilizing the voltage transformation sub circuit produces square wave voltage, can control instruct the light emitting time of sub circuit to reach the purpose that reduces whole rifle indicating circuit charges consumption, solved the problem of generating heat in the narrow and small space in electric automobile charges the rifle.
Description
Technical field
This utility model relates to charging electric vehicle field, fills more specifically, this utility model relates to one
Electricity rifle indicating circuit.
Background technology
Along with popularizing of electric automobile, the application of charging equipment of electric automobile is increasingly extensive.At electric automobile
In charging process, taking and pulling out the operation of charging gun is danger close, may result in the accidents such as personal injury and sends out
Raw.
In order to evade this accident, it has been proposed that a kind of charging gun indicating circuit, Fig. 1 shows typical case
The schematic circuit of charging gun indicating circuit.As it is shown in figure 1, resistance R11 and LED
It is connected in series between charge power supply and ground.The specified charge voltage range of electric automobile is 250V-
750VDC, due to the variation of charging voltage, the current fluctuation flowing through display lamp is bigger, display lamp bright
Degree can change significantly with the change of charging voltage.
Typical charging gun indicating circuit as shown in Figure 1 is arranged on inside charging gun, close to 750V
In the case of charging voltage, flow through the electric current substantially 10mA of LED.Now, whole
The power consumption of charging gun indicating circuit is substantially: 750V × 10mA=7.5W.Due to charging gun internal cavities
Size is smaller, and in narrow space, such power consumption easilys lead to localized hyperthermia, thus damages
Device within charging gun and the plastic cement parts of charging gun itself.
As shown in Figure 2, it is shown that the charging gun indicating circuit of a kind of improvement.Improvement as shown in Figure 2
Charging gun indicating circuit includes voltage stabilizing electronic circuit, this voltage stabilizing electronic circuit include the first resistance R1, second
Resistance R2, transistor Q1 and Zener diode Dz, wherein the source electrode of transistor Q1 is as voltage stabilizing
The outfan of circuit.In the charging voltage excursion of 250V-750V, the output of voltage stabilizing electronic circuit
End output one burning voltage, this burning voltage is as the 3rd resistance R3 and the work of LED
Voltage.Therefore, in the charging gun indicating circuit of improvement as shown in Figure 2, light emitting diode is flow through
The electric current of LED keeps stable, and the luminosity of LED keeps constant.But,
The most unresolved heating problem of charging gun indicating circuit of improvement as shown in Figure 2.
Accordingly, it would be desirable to a kind of charging gun indicating circuit that can solve the problem that charging gun indicating circuit heating problem.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of charging gun indicating circuit, passes through
The square-wave voltage with a dutycycle is provided so that luminescent device passes through in charging process to luminescent device
Flicker indicates charging, and also reduces the power consumption of whole charging gun indicating circuit.
According to an aspect of the invention, it is provided a kind of charging gun indicating circuit, including: voltage stabilizing electricity
Road, it receives charging voltage, and produces a burning voltage based on the charging voltage received；Voltage transformation
Electronic circuit, it receives described burning voltage, and has the one of a dutycycle based on the generation of described burning voltage
Square-wave voltage；And instruction electronic circuit, it utilizes described square-wave voltage to carry out luminescence.
Alternatively, in described charging gun indicating circuit, described voltage transformation electronic circuit is that square-wave signal is sent out
Raw device.
Alternatively, in described charging gun indicating circuit, the operation of described square wave signal generator is agitator,
Described agitator, after receiving described burning voltage, exports high level within the first period and makes described finger
Showing that electronic circuit is luminous, then within the second period, output low level makes described instruction electronic circuit stop luminescence.
Alternatively, in described charging gun indicating circuit, described square wave signal generator includes 555 timings
Device.
According to this utility model embodiment, described charging gun indicating circuit is arranged on charging electric vehicle rifle,
When described charging electric vehicle rifle accesses charge power supply, the outfan output of described square wave signal generator
High level also keeps output high level, the outfan of the most described square wave signal generator within the first period
Switch to low level from high level and within the second period, keep output low level.
According to this utility model embodiment, described square wave signal generator includes 555 intervalometers, the 3rd electricity
Resistance, the 4th resistance, the first transistor, transistor seconds, the first electric capacity and the second electric capacity, described 555
First pin ground connection of intervalometer, the second pin and the 6th pin and the first electric capacity first end connect and
Be connected with the anode of the first diode, the 3rd pin as the outfan of described square wave signal generator,
First end of five pins and the second electric capacity connects, the 4th pin and the 8th pin and the second end of the 3rd resistance
Connect and be connected with the outfan of described voltage transformation electronic circuit, the 7th pin and the sun of the second diode
First end of pole, the first end of the 4th resistance and the 3rd resistance connects.
According to this utility model embodiment, when described charging electric vehicle rifle accesses charge power supply, described
3rd pin output high level of 555 intervalometers, via described 3rd resistance and described second diode to
Described first electric capacity charging；When described first electric capacity is charged to the first voltage, described 555 intervalometers
The 3rd pin output low level, described first electric capacity is via the first transistor and the 4th resistance and described
Discharge circuit within 555 intervalometers discharges；When described first electric capacity is discharged to the second voltage,
3rd pin of described 555 intervalometers exports high level again, and again via described 3rd resistance and
Described second diode is to described first electric capacity charging, and wherein, described first voltage is described 8th pin
Voltage 2/3, described second voltage is the 1/3 of the voltage of described 8th pin.
According to this utility model embodiment, the charging interval of described first electric capacity and putting of described first electric capacity
The electricity time determines the dutycycle of the square-wave signal of the 3rd pin output of described 555 intervalometers.
According to this utility model embodiment, described 555 intervalometers are cmos type 555 intervalometers.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description,
It is used for explaining this utility model together with embodiment of the present utility model, is not intended that of the present utility model
Limit.In the accompanying drawings:
Fig. 1 is the schematic circuit of a kind of typical charging gun indicating circuit；
Fig. 2 is the schematic circuit of the charging gun indicating circuit of a kind of improvement；
Fig. 3 is the schematic block diagram of the charging gun indicating circuit according to this utility model embodiment；
Fig. 4 is the schematic circuit of the charging gun indicating circuit according to this utility model embodiment；And
Fig. 5 is the defeated of voltage transformation electronic circuit in the charging gun indicating circuit according to this utility model embodiment
Go out the schematic diagram of voltage waveform.
Detailed description of the invention
Will be described in detail with reference to the accompanying drawings according to embodiment of the present utility model.Here it is to be noted that it
In the accompanying drawings, identical reference imparting is substantially had the composition of same or like 26S Proteasome Structure and Function
Part, and the repeated description about them will be omitted.
As shown in Figure 3, it is shown that schematic according to the charging gun indicating circuit of this utility model embodiment
Block diagram.
Charging gun indicating circuit according to this utility model embodiment includes voltage stabilizing electronic circuit 11, voltage transformation
Electronic circuit 12 and instruction electronic circuit 13.
Described voltage stabilizing electronic circuit 11 receives charging voltage, and it is stable to produce one based on the charging voltage received
Voltage.
Described voltage transformation electronic circuit 12 receives described burning voltage, and produces tool based on described burning voltage
There is a square-wave voltage of a dutycycle.
Described instruction electronic circuit 13 utilizes described square-wave voltage to carry out luminescence.
According to this utility model embodiment, described charging gun indicating circuit is by utilizing described voltage transformation
Circuit produces square-wave voltage, controls the fluorescent lifetime of described instruction electronic circuit 13, thus reduces whole
The purpose of individual charging gun indicating circuit power consumption.
According to this utility model embodiment, described voltage transformation electronic circuit 12 is square wave signal generator, and
And described square wave signal generator may be operative to agitator, described agitator is receiving described stable electricity
After pressure, within the first period, export high level make described instruction electronic circuit luminous, then in the second period
Interior output low level makes described instruction electronic circuit stop luminescence.
According to this utility model embodiment, described square wave signal generator can include 555 intervalometers and
The peripheral electronic circuit of described 555 intervalometers.Fill owing to described charging gun indicating circuit is arranged on electric automobile
On electricity rifle, so when described charging electric vehicle rifle starts to access charge power supply, described square-wave signal is sent out
The outfan of raw device exports high level and keeps output high level to make described instruction electric within the first period
Road is luminous, and the outfan of the most described square wave signal generator switches to low level and second from high level
Output low level is kept to make described instruction electronic circuit stop luminescence in period.
According to this utility model embodiment, described instruction electronic circuit 13 can include luminescent device, described
Optical device can include light emitting diode.
As shown in Figure 4, it is shown that schematic according to the charging gun indicating circuit of this utility model embodiment
Circuit diagram.
According to this utility model embodiment, described voltage stabilizing electronic circuit 11 include Zener diode Dz, first
Resistance R1, the second resistance R2 and transistor Q1.
As shown in Figure 4, first end of described first resistance R1 is as the input of described voltage stabilizing electronic circuit 11
End is to receive described charging voltage.The drain electrode of described transistor Q1 and second end of described first resistance R1
Connect with first end of described second resistance R2, the grid of described transistor Q1 and described second resistance
Second end of R2 connects and is connected with the negative electrode of described Zener diode Dz, described transistor Q1's
Source electrode is as the outfan of described voltage stabilizing electronic circuit 11.The plus earth of described Zener diode Dz.
As example, the voltage stabilizing value of described Zener diode Dz is 12V, and described voltage stabilizing electronic circuit
The magnitude of voltage of the burning voltage of the outfan output of 11 is approximately 12V.
As shown in Figure 4, according to this utility model embodiment, described voltage transformation electronic circuit 12 includes 555
Intervalometer, the 3rd resistance R3, the 4th resistance R4, the first diode D1, the second diode D2,
One electric capacity C1 and the second electric capacity C2.
First pin 1 ground connection of described 555 intervalometers, the second pin 2 and the 6th pin 6 and the first electricity
The first end holding C1 connects and is connected with the anode of the first diode D1, and the 3rd pin 3 is as described
The outfan of voltage transformation electronic circuit 12, the 5th pin 5 is connected with first end of the second electric capacity C2, the
Four pins 4 and the 8th pin 8 is connected with second end of the 3rd resistance R3 and with described voltage transformation electricity
The outfan on road 11 connects, the 7th pin 7 and the anode of the second diode D2, the 4th resistance R4
First end of the first end and the 3rd resistance R3 connects.The second end ground connection of the first electric capacity C1, the second electric capacity
The second end ground connection of C2；The negative electrode of the first diode D1 and second end of the 4th resistance R4 connect.
When described charging electric vehicle rifle starts to access charge power supply, the 3rd of described 555 intervalometers draws
Foot 3 exports high level, via described 3rd resistance R3 and described second diode D2 to described first electricity
Hold C1 charging；When described first electric capacity C1 is charged to the first voltage VA, described 555 intervalometers
The 3rd pin 3 output low level, described first electric capacity C1 is via the first transistor Q1 and the 4th resistance
Discharge circuit within R4 and described 555 intervalometers discharges；It is discharged at described first electric capacity
During the second voltage VB, the 3rd pin 3 of described 555 intervalometers exports high level again, and again
Via described 3rd resistance R3 and described second diode D2 to described first electric capacity C1 charging, so
Circulation.Described first voltage VA is the 2/3 of the voltage vcc of described 8th pin 8, described second voltage
VB is the 1/3 of the voltage vcc of described 8th pin 8.
According to this utility model embodiment, the charging interval of described first electric capacity C1 and described first electric capacity
Determine the dutycycle of the square-wave signal of the 3rd pin output of described 555 intervalometers the discharge time of C1.
As shown in Figure 4, according to this utility model embodiment, described instruction electronic circuit 13 includes being connected in series
The 5th resistance R5 and LED.
First end of described 5th resistance R5 is connected with the outfan of described voltage transformation electronic circuit 12, institute
The anode of the second end and described LED of stating the 5th resistance R5 is connected, described light-emitting diodes
The minus earth of pipe LED.
Below, in conjunction with Fig. 4 and Fig. 5, the charging electric vehicle rifle according to this utility model embodiment is described
Work process.
The t0 when described charging electric vehicle rifle accesses charge power supply, the output electricity of described voltage stabilizing electronic circuit 11
Pressure is for Vcc, and the voltage at described first electric capacity C1 two ends is zero, due to the first electric capacity C1 two ends voltage not
Can suddenly change, the voltage V2 on the second pin of described 555 intervalometers and the voltage V6 on the 6th pin is equal
Being zero, the most now the voltage V2 on the second pin is less than Vcc/3, the 3rd of the most described 555 intervalometers
Pin output high level, now via described 3rd resistance R3 and described second diode D2 to described the
One electric capacity C1 charging.The charge constant of described first electric capacity C1 is τ c=R3C1, wherein R3It is
The resistance value of three resistance R3, C1It it is the capacitance of the first electric capacity C1.
Along with the first electric capacity C1 is electrically charged, the voltage at the first electric capacity C1 two ends reaches t1 during 2Vcc/3,
The most now the voltage V6 on the 6th pin is more than 2Vcc/3, and the output state of the most described 555 intervalometers is sent out
Changing, the 3rd pin output low level of described 555 intervalometers, inside the most described 555 intervalometers
Discharge circuit start working, and the 7th pin of described 555 intervalometers is put with described as discharge end
Electricity circuit connects, and described first electric capacity C1 is via the first transistor D1 and the 4th resistance R4 and described 555
Discharge circuit within intervalometer discharges.The discharge time constant of described first electric capacity C1 is τ d=
R4C1, wherein R4It it is the resistance value of the 4th resistance R4.
Voltage at described first electric capacity C1 two ends is discharged to t2 during Vcc/3, described 555 intervalometers
The 3rd pin 3 again export high level, and again via described 3rd resistance R3 and the described 2nd 2
Pole pipe D2 is to described first electric capacity C1 charging.When the voltage at the first electric capacity C1 two ends reaches 2Vcc/3
T3, the 3rd pin 3 output low level again of described 555 intervalometers, and described first electric capacity C1 is again
Secondary enter via the discharge circuit within the first transistor D1 and the 4th resistance R4 and described 555 intervalometers
Row electric discharge.
As shown in Figure 4, the time period between t0 moment and t1 moment is the initial charge of the first electric capacity C1
Time period, the time period between t2 moment and t3 moment is that the first electric capacity C1 is in course of normal operation
Normal charging period section, this Initial charge time section is than normal charging period segment length.When utilization charges normal
Between section (t3-t2) and regular picture time period (t4-t3) define the 3rd of described 555 intervalometers and draw
The dutycycle of the square wave of foot output.
As it has been described above, the time of the 3rd pin output high level of described 555 intervalometers is equal to described first
The charging interval tc of electric capacity C1, and the time of the 3rd pin output low level of described 555 intervalometers is equal to
Td discharge time of described first electric capacity C1.The charging interval tc and described first of described first electric capacity C1
The charge constant of electric capacity C1 is directly proportional, and described first electric capacity C1 discharge time td with described
The discharge time constant of the first electric capacity C1 is directly proportional.Therefore, the 3rd pin output of described 555 intervalometers
The time of high level is directly proportional to the charge constant of described first electric capacity C1, described 555 intervalometers
The time of the 3rd pin output low level is directly proportional to the discharge time constant of described first electric capacity C1.That is,
Dutycycle the filling by described first electric capacity C1 of the square-wave signal of the 3rd pin output of described 555 intervalometers
The discharge time constant of electrical time constant and described first electric capacity determines.
Specifically, can be by the charge constant of described first electric capacity C1 and described first electric capacity C1
The ratio of discharge time constant, determines the square-wave signal of the 3rd pin output of described 555 intervalometers
Dutycycle.Owing to the charge constant of described first electric capacity C1 is τ c=R3C1And described first electric capacity
The discharge time constant of C1 is τ d=R4C1, therefore by reasonably choosing the resistance value of the 3rd resistance R3
R3Resistance value R with the 4th resistance R44, the side of the 3rd pin output of described 555 intervalometers can be set
The dutycycle of ripple signal.Specifically, accounting for of the square-wave signal that the 3rd pin of described 555 intervalometers exports
Empty ratio is R3/(R3+R4)。
Described 555 intervalometers can be 555 ambipolar intervalometers, it is also possible to for cmos type 555
Intervalometer.Preferably, described 555 intervalometers are cmos type 555 intervalometers.
According to this utility model embodiment, as example, the 3rd pin output of described 555 intervalometers
The dutycycle of square-wave signal is 20%, when i.e. exporting the second of the first period of high level and output low level
The ratio of section is 1:4.
By output low and high level square-wave signal alternately, so that luminescent device is with flashing mode luminous,
Play warning function, and also the luminous duration of luminescent device can be reduced, reduce described luminous son
The purpose of the power consumption of circuit 13.Additionally, by using cmos type 555 intervalometers, can reduce
The power consumption of described voltage transformation electronic circuit 12.Additionally, by using cmos type 555 intervalometers,
More can reduce the power consumption of described voltage stabilizing electronic circuit 11, specifically, when described luminescent device is non-luminous
In section, the power consumption of described voltage stabilizing electronic circuit 11 can be down to minimum.
This utility model embodiment described in detail above.But, it should be appreciated by those skilled in the art that
Without departing from the principles and spirit of the present invention, these embodiments can be carried out various amendment, group
Close or sub-portfolio, and such amendment should fall in protection domain of the present utility model.
Claims (10)
1. a charging gun indicating circuit, including:
Voltage stabilizing electronic circuit, it receives charging voltage, and produces a stable electricity based on the charging voltage received
Pressure；
Voltage transformation electronic circuit, it receives described burning voltage, and has based on the generation of described burning voltage
One square-wave voltage of one dutycycle；And
Instruction electronic circuit, it utilizes described square-wave voltage to carry out luminescence.
2. charging gun indicating circuit as claimed in claim 1, wherein, described voltage stabilizing electronic circuit includes surely
Pressure diode, the first resistance, the second resistance and transistor；
First end of described first resistance as the input of described voltage stabilizing electronic circuit to receive described charged electrical
Pressure,
The drain electrode of described transistor connects with the first end of the second end of described first resistance and described second resistance
Connect, the grid of described transistor be connected with the second end of described second resistance and with described Zener diode
Negative electrode connect, the source electrode of described transistor as the outfan of described voltage stabilizing electronic circuit, and
The plus earth of described Zener diode.
3. charging gun indicating circuit as claimed in claim 1, wherein, described voltage transformation electronic circuit is
Square wave signal generator.
4. charging gun indicating circuit as claimed in claim 3, wherein, described square wave signal generator is grasped
As agitator, described agitator is after receiving described burning voltage, and within the first period, output is high electric
Putting down and make described instruction electronic circuit luminous, then within the second period, output low level makes described instruction
Circuit stops luminescence.
5. charging gun indicating circuit as claimed in claim 3, wherein, described square wave signal generator bag
Include 555 intervalometers and the peripheral electronic circuit of described 555 intervalometers.
6. charging gun indicating circuit as claimed in claim 5, wherein, the periphery of described 555 intervalometers
Electronic circuit includes: the 3rd resistance, the 4th resistance, the first diode, the second diode, the first electric capacity and
Second electric capacity；
First pin ground connection of described 555 intervalometers, the second pin and the 6th pin and the of the first electric capacity
One end connects and is connected with the anode of the first diode, and the 3rd pin is as described square wave signal generator
Outfan, the first end of the 5th pin and the second electric capacity connects, the 4th pin and the 8th pin and the 3rd
Second end of resistance connects and is connected with the outfan of described voltage transformation electronic circuit, the 7th pin and the
First end of the anode of two diodes, the first end of the 4th resistance and the 3rd resistance connects；
Second end ground connection of the first electric capacity, the second end ground connection of the second electric capacity；
The negative electrode of the first diode and the second end of the 4th resistance connect.
7. charging gun indicating circuit as claimed in claim 6, wherein, described charging gun indicating circuit is pacified
It is contained on charging electric vehicle rifle,
When described charging electric vehicle rifle starts to access charge power supply, the 3rd of described 555 intervalometers draws
Foot output high level, charges to described first electric capacity via described 3rd resistance and described second diode；
When described first electric capacity is charged to the first voltage, the 3rd pin output of described 555 intervalometers
Low level, described first electric capacity via the first transistor and the 4th resistance and described 555 intervalometers inside
Discharge circuit discharge；
When described first electric capacity is discharged to the second voltage, the 3rd pin of described 555 intervalometers is again
Output high level, and again via described 3rd resistance and described second diode to described first electric capacity
Charging,
Wherein, described first voltage is the 2/3 of the voltage of described 8th pin, and described second voltage is described
The 1/3 of the voltage of the 8th pin.
8. charging gun indicating circuit as claimed in claim 7, wherein, during the charging of described first electric capacity
Between and determine discharge time of described first electric capacity the square wave of the 3rd pin output of described 555 intervalometers
The dutycycle of signal.
9. charging gun indicating circuit as claimed in claim 5, wherein, described 555 intervalometers are CMOS
555 intervalometers of type.
10. charging gun indicating circuit as claimed in claim 1, wherein, described instruction electronic circuit includes
The 5th resistance and the luminescent device being connected in series,
First end of described 5th resistance is connected with the outfan of described voltage transformation electronic circuit, and the described 5th
Second end of resistance is connected with the anode of described luminescent device, the minus earth of described luminescent device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172628.4U CN205595825U (en) | 2016-03-07 | 2016-03-07 | Rifle indicating circuit charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172628.4U CN205595825U (en) | 2016-03-07 | 2016-03-07 | Rifle indicating circuit charges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205595825U true CN205595825U (en) | 2016-09-21 |
Family
ID=56929029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620172628.4U Withdrawn - After Issue CN205595825U (en) | 2016-03-07 | 2016-03-07 | Rifle indicating circuit charges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205595825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239378A (en) * | 2019-07-04 | 2019-09-17 | 广东工业大学 | A kind of control method of alternating-current charging pile self-adaptive current output |
-
2016
- 2016-03-07 CN CN201620172628.4U patent/CN205595825U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239378A (en) * | 2019-07-04 | 2019-09-17 | 广东工业大学 | A kind of control method of alternating-current charging pile self-adaptive current output |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160921 Effective date of abandoning: 20200730 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160921 Effective date of abandoning: 20200730 |