CN203376663U

CN203376663U - A voltage stabilizer circuit for digital display of automobile battery voltage

Info

Publication number: CN203376663U
Application number: CN201320452764.5U
Authority: CN
Inventors: 郭哲; 文道兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2014-01-01
Anticipated expiration: 2023-07-26

Abstract

The utility model discloses a car battery voltage digital display's stabiliser circuit, including the controller with be used for filtering and stabilize the filtering voltage stabilizing circuit of car battery both ends voltage, filtering voltage stabilizing circuit voltage output end is connected with the step-down voltage stabilizing circuit who is used for providing the power to the controller, be connected with on the controller and be used for sampling the resistance sampling circuit of battery both ends voltage size, be used for providing reference voltage's reference voltage circuit and be used for showing the LCD display screen of battery both ends voltage size to the controller. The purpose of present case is through parallelly connected filtering voltage stabilizing circuit at car battery both ends, and the voltage drop and the interference that the filtering caused by car ignition and car electrical apparatus etc. stabilize the return circuit voltage, improve car ignition efficiency, make the abundant burning of fuel, improve the power of car, prolong the life of on-vehicle electrical apparatus and car battery.

Description

The voltage regulator circuit that a kind of automobile storage battery voltage digital shows

[technical field]

The utility model relates to the voltage regulator circuit that a kind of automobile storage battery voltage digital shows.

[background technology]

Raising along with people's living standard, the use of automobile is more and more general, requirement to its performance is also more and more higher, current automobile in use, when initial start, it is very large that engine and other vehicle electronic devices consume momentary current, causes the storage battery drops, cause engine ignition not in time, the part oil inflame is insufficient; In addition, when travelling in road conditions not good road surface, cause the overload of engine, make the accumulator instantaneous pressure drop larger, reduce the serviceable life of consumer; Moreover, along with the additional function of vehicle increases, vehicle-mounted consumer also increases gradually, as sound equipment etc., when the vehicle mounted electrical apparatus apparatus of load is larger, also can cause the unstable of battery tension, consumer is caused to damage, affect the acoustical quality of sound equipment.

In view of this, the design people carries out Improvement for the defect of current mobile unit, and this case produces thus.

[utility model content]

The utility model has overcome the deficiency of above-mentioned technology, and the voltage regulator circuit that provides a kind of automobile storage battery voltage digital to show, can stablize the accumulator both end voltage and carry out voltage digital demonstration and abnormal prompt.

For achieving the above object, the utility model has adopted following technical proposal:

The voltage regulator circuit that a kind of automobile storage battery voltage digital shows, include controller 1 and for the filter regulator circuit 2 of filtering and stabilizing cars accumulator both end voltage, described filter regulator circuit 2 voltage output ends are connected with for the decompression voltage regulator 3 of power supply is provided to controller 1, be connected with the resistance sampling circuit 4 for the accumulator both end voltage size of sampling on described controller 3, for the reference voltage circuit 5 of reference voltage is provided to controller 3, and for showing the LCD display 6 of accumulator both end voltage size, described resistance sampling circuit 4 sampled signal input ends are connected with battery positive voltage, resistance sampling circuit 4 sampled signal output terminals are connected with controller 1 sampled signal input end, described reference voltage circuit 5 voltage input ends are connected with decompression voltage regulator 3 voltage output ends, the reference voltage output end of reference voltage circuit 5 is connected with controller 3 reference voltage input.

Described filter regulator circuit 2 includes resistance R 6, light emitting diode D5, filter capacitor C6, and polar capacitor C11～C13, described resistance R 6 one ends, filter capacitor C6 mono-end, capacitor C 11 positive poles are connected afterwards and battery positive voltage, decompression voltage regulator 3 voltage input ends, resistance sampling circuit 4 voltage input ends are connected, resistance R 6 other ends are connected with light emitting diode D5 is anodal, capacitor C 11 negative poles are connected with capacitor C 12 is anodal, capacitor C 12 negative poles are connected with capacitor C 13 is anodal, light emitting diode D5 negative pole and filter capacitor C6 negative pole, the capacitor C 13 negative poles rear ground connection that is connected.

Described decompression voltage regulator 3 includes three terminal regulator 21 and is connected in parallel on the capacitor C 2～C5 between three terminal regulator 21 voltage output ends and ground, described three terminal regulator 21 voltage input ends are connected with filter regulator circuit 2 cathode voltage output terminals, three terminal regulator 21 earth terminal ground connection, three terminal regulator 21 voltage output ends are connected with controller 3 voltage input ends.

Described reference voltage circuit 5 includes resistance R 8, stabilivolt ZD1 and capacitor C 8, described resistance R 8 one ends are connected with three terminal regulator 21 output terminals, the resistance R 8 other ends rear reference voltage output end as reference voltage circuit 5 that is connected with stabilivolt ZD1 negative pole, capacitor C 8 one ends is connected with controller 3 reference voltage input, the anodal rear ground connection that is connected with capacitor C 8 other ends of stabilivolt ZD1.

Described resistance sampling circuit 4 includes resistance R 9 and resistance R 11, and institute's art is stated resistance R 9 one ends and is connected with battery positive voltage, and resistance R 9 other ends are connected with resistance R 11 1 ends, controller 1 sampled signal input end, resistance R 11 other end ground connection.

Also be connected with the voice module 7 for voice suggestion on described controller 1, described voice module 7 includes loudspeaker 71 and speaker drive chip 72, described speaker drive chip 72 input ends are connected with controller 1, and speaker drive chip 72 output terminals are connected with loudspeaker 71 input ends.

Also be connected with the status indicator lamp circuit 8 for showing that whether battery tension is abnormal on described controller 1, described status indicator lamp circuit 8 includes resistance R 1～R2, light emitting diode D1～D2, described light emitting diode D1 negative pole, light emitting diode D2 negative pole are connected with controller 3 respectively, light emitting diode D1 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 1, and light emitting diode D2 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 2.

On described controller 1, also be connected with for strengthening the backlight circuit 9 of LCD display 6 luminance brightness, described backlight circuit 9 includes resistance R 3～R4, light emitting diode D3～D4, described light emitting diode D3 negative pole, light emitting diode D4 negative pole are connected with controller 3 respectively, light emitting diode D3 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 3, and light emitting diode D4 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 4.

Also be connected with the voltage leadage circuit 10 for the accumulator discharge voltage on described controller 1, described voltage leadage circuit 10 cathode voltage input ends are connected with battery positive voltage, voltage leadage circuit 10 cathode voltage input ends are connected with battery terminal negative, and voltage leadage circuit 10 control signal input ends are connected with controller 1.

Voltage leadage circuit 10 includes resistance R 5, resistance R 7 and triode Q1 as mentioned above, described resistance R 7 one ends are connected with controller 1 as the control signal input end, resistance R 7 other ends are connected with triode Q1 base stage, triode Q1 collector connects the battery tension positive pole by resistance R 5, triode Q1 grounded emitter.

Compared with prior art, the beneficial effects of the utility model are:

1, pass through at automobile storage battery two ends parallel filtering mu balanced circuit, but the voltage that filtering is caused by automotive ignition and car electrics etc. falls and disturbs, stable loop voltage, improve automotive ignition efficiency, fuel oil is fully burnt, improve the power of automobile, extend the serviceable life of vehicle mounted electrical apparatus and automobile batteries.

2, by connecting on controller for sampling the resistance sampling circuit of accumulator both end voltage and for the reference voltage circuit of reference voltage is provided to controller, can calculate the accumulator actual voltage value, carry out the numerical value demonstration by LCD display, be convenient to the user and understand the battery tension size cases.

3, by connect voice module and status indicator lamp circuit on controller, whether extremely be convenient to understand battery tension, point out in time the user to note.

4, by connect the backlight circuit on controller, as the backlight of LCD display, while being convenient in car insufficient light and night, strengthen the LCD display luminance brightness, conveniently check data.

5, by connect the voltage leadage circuit on controller, when voltage on filter regulator circuit being detected dropping into the critical point of automobile electrical equipment normal operation neck after automobile flameout outage, can, by the voltage leadage circuit remaining extra low voltage of releasing rapidly, can prevent consumer abnormal work in car.

[accompanying drawing explanation]

Fig. 1 is block diagram of the present utility model.

Fig. 2 is circuit diagram of the present utility model.

[embodiment]

Below in conjunction with accompanying drawing, by embodiment, the utility model feature and other correlated characteristic are described in further detail, so that technician's of the same trade understanding:

As shown in Figure 1, the voltage regulator circuit that a kind of automobile storage battery voltage digital shows, include controller 1 and for the filter regulator circuit 2 of filtering and stabilizing cars accumulator both end voltage, described filter regulator circuit 2 voltage output ends are connected with for the decompression voltage regulator 3 of power supply is provided to controller 1, be connected with the resistance sampling circuit 4 for the accumulator both end voltage size of sampling on described controller 3, for the reference voltage circuit 5 of reference voltage is provided to controller 3, and for showing the LCD display 6 of accumulator both end voltage size, described resistance sampling circuit 4 sampled signal input ends are connected with battery positive voltage, resistance sampling circuit 4 sampled signal output terminals are connected with controller 1 sampled signal input end, described reference voltage circuit 5 voltage input ends are connected with decompression voltage regulator 3 voltage output ends, the reference voltage output end of reference voltage circuit 5 is connected with controller 3 reference voltage input.

As shown in Figure 2, the described filter regulator circuit 2 of this case includes resistance R 6, light emitting diode D5, filter capacitor C6, and polar capacitor C11～C13, described resistance R 6 one ends, filter capacitor C6 mono-end, capacitor C 11 positive poles are connected afterwards and battery positive voltage, decompression voltage regulator 3 voltage input ends, resistance sampling circuit 4 voltage input ends are connected, resistance R 6 other ends are connected with light emitting diode D5 is anodal, capacitor C 11 negative poles are connected with capacitor C 12 is anodal, capacitor C 12 negative poles are connected with capacitor C 13 is anodal, light emitting diode D5 negative pole and filter capacitor C6 negative pole, the capacitor C 13 negative poles rear ground connection that is connected.

As mentioned above, by automobile storage battery two ends parallel filtering mu balanced circuit 2, but the voltage that filtering is caused by automotive ignition and car electrics etc. falls and disturbs, stable loop voltage, improve automotive ignition efficiency, fuel oil is fully burnt, extend the serviceable life of vehicle mounted electrical apparatus and automobile batteries.

In the present embodiment, described controller 1 adopts the single-chip microcomputer that model is PIC16F914-E/ML, controls the work of other circuit.

Decompression voltage regulator 3 as above includes three terminal regulator 21 and is connected in parallel on the capacitor C 2～C5 between three terminal regulator 21 voltage output ends and ground, three terminal regulator 21 adopts the three terminal regulator 21 that model is MC78L05, three terminal regulator 21 voltage input ends are connected with filter regulator circuit 2 cathode voltage output terminals, three terminal regulator 21 earth terminal ground connection, three terminal regulator 21 voltage output ends are connected with controller 3 voltage input ends, to controller 1 output 5V stable DC voltage.

Reference voltage circuit 5 as above includes resistance R 8, stabilivolt ZD1 and capacitor C 8, described resistance R 8 one ends are connected with three terminal regulator 21 output terminals, the resistance R 8 other ends rear reference voltage output end as reference voltage circuit 5 that is connected with stabilivolt ZD1 negative pole, capacitor C 8 one ends is connected with controller 3 reference voltage input, the anodal rear ground connection that is connected with capacitor C 8 other ends of stabilivolt ZD1, the reference voltage by reference voltage circuit 5 to controller 1 reference voltage input input 2.5V.

Resistance sampling circuit 4 as above includes resistance R 9 and resistance R 11, and institute's art is stated resistance R 9 one ends and is connected with battery positive voltage, and resistance R 9 other ends are connected with resistance R 11 1 ends, controller 1 sampled signal input end, resistance R 11 other end ground connection.

As mentioned above, controller 1 is by resistance sampling circuit 4 sampling accumulator both end voltage and obtain reference voltage by reference voltage circuit 5, thereby calculates accumulator both end voltage value, and is presented on LCD display 6, facilitates the user to check.

Also be connected with the voice module 7 for voice suggestion on controller 1 as above, described voice module 7 includes loudspeaker 71 and speaker drive chip 72, described speaker drive chip 72 input ends are connected with controller 1, and speaker drive chip 72 output terminals are connected with loudspeaker 71 input ends.

Also be connected with the status indicator lamp circuit 8 for showing that whether battery tension is abnormal on controller 1 as above, described status indicator lamp circuit 8 includes resistance R 1～R2, light emitting diode D1～D2, described light emitting diode D1 negative pole, light emitting diode D2 negative pole are connected with controller 3 respectively, light emitting diode D1 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 1, and light emitting diode D2 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 2.

As mentioned above, in the time of in storage battery is pressed in setting range, light emitting diode D1 in controller 1 illuminating state indicator light circuit 8, mean that voltage is normal, in the time of outside storage battery is pressed in setting range, controller 1 is lighted light emitting diode D2, means electric voltage exception, and triggers voice module 7 and send voice suggestion.

On controller 1 as above, also be connected with for strengthening the backlight circuit 9 of LCD display 6 luminance brightness, described backlight circuit 9 includes resistance R 3～R4, light emitting diode D3～D4, described light emitting diode D3 negative pole, light emitting diode D4 negative pole are connected with controller 3 respectively, light emitting diode D3 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 3, and light emitting diode D4 is anodal to be connected with decompression voltage regulator 3 voltage output ends by resistance R 4.

Also be connected with the voltage leadage circuit 10 for the accumulator discharge voltage on controller 1 as above, described voltage leadage circuit 10 includes resistance R 5, resistance R 7 and triode Q1, described resistance R 7 one ends are connected with controller 1 as the control signal input end, resistance R 7 other ends are connected with triode Q1 base stage, triode Q1 collector connects the battery tension positive pole by resistance R 5, triode Q1 grounded emitter.

As mentioned above, when the voltage after the automobile flameout outage on filter regulator circuit 2 drops into the critical point of automobile electrical equipment normal operation neck, can be by the voltage leadage circuit 10 remaining extra low voltage of releasing rapidly, it can prevent consumer abnormal work in car.

As mentioned above, this case protection be the voltage regulator circuit that a kind of automobile storage battery voltage digital shows, being equal to replacement and all should being shown in the protection domain that falls into this case of all or this case physical circuits identical with this case structure.

Claims

1. A voltage stabilizer circuit for digital display of automobile battery voltage, characterized in that it includes a controller (1) and a filter voltage stabilization circuit (2) for filtering and stabilizing the voltage at both ends of the automobile battery, the filter voltage stabilization circuit The voltage output terminal of the circuit (2) is connected with a step-down voltage stabilizing circuit (3) for supplying power to the controller (1), and the controller (3) is connected with a resistance sampling circuit ( 4), a reference voltage circuit (5) for providing a reference voltage to the controller (3), and an LCD display (6) for displaying the voltage at both ends of the battery, the resistance sampling circuit (4) sampling signal input The terminal is connected to the positive pole of the battery, the sampling signal output terminal of the resistance sampling circuit (4) is connected to the sampling signal input terminal of the controller (1), and the voltage input terminal of the reference voltage circuit (5) is connected to the voltage output terminal of the step-down regulator circuit (3) The reference voltage output terminal of the reference voltage circuit (5) is connected to the reference voltage input terminal of the controller (3).

2. A voltage stabilizer circuit for digital display of automobile battery voltage according to claim 1, characterized in that the filtering and stabilizing circuit (2) includes a resistor R6, a light-emitting diode D5, a filter capacitor C6, and a polarity Capacitors C11-C13, one end of the resistor R6, one end of the filter capacitor C6, and the positive pole of the capacitor C11 are connected to the positive pole of the battery, the voltage input terminal of the step-down voltage stabilization circuit (3), and the voltage input terminal of the resistance sampling circuit (4), The other end of the resistor R6 is connected to the anode of the light-emitting diode D5, the cathode of the capacitor C11 is connected to the anode of the capacitor C12, the cathode of the capacitor C12 is connected to the anode of the capacitor C13, the cathode of the light-emitting diode D5 is connected to the cathode of the filter capacitor C6 and the cathode of the capacitor C13, and then grounded.

3. A voltage regulator circuit for digital display of automobile battery voltage according to claim 1, characterized in that the step-down regulator circuit (3) includes a three-terminal voltage regulator (21) and a three-terminal regulator connected in parallel Capacitors C2-C5 between the voltage output terminal of the voltage regulator (21) and the ground, the voltage input terminal of the three-terminal voltage regulator (21) is connected to the positive voltage output terminal of the filter voltage stabilization circuit (2), and the three-terminal voltage regulator (21) The ground terminal is grounded, and the voltage output terminal of the three-terminal voltage stabilizer (21) is connected to the voltage input terminal of the controller (3).

4. A voltage stabilizer circuit for digital display of automobile battery voltage according to claim 3, characterized in that the reference voltage circuit (5) includes a resistor R8, a regulator tube ZD1, and a capacitor C8, and the resistor One end of R8 is connected to the output end of the three-terminal voltage regulator (21), the other end of the resistor R8 is connected to the negative electrode of the regulator tube ZD1, and one end of the capacitor C8 is used as the reference voltage output end of the reference voltage circuit (5) and the controller (3) The reference voltage input terminal is connected, and the positive electrode of the regulator tube ZD1 is connected to the other end of the capacitor C8 and then grounded.

5. A voltage stabilizer circuit for digital display of automobile battery voltage according to claim 1, characterized in that the resistance sampling circuit (4) includes a resistor R9 and a resistor R11, and one end of the resistor R9 is connected to the positive pole of the battery connection, the other end of the resistor R9 is connected with one end of the resistor R11 and the sampling signal input end of the controller (1), and the other end of the resistor R11 is grounded.

6. A voltage stabilizer circuit for digital display of automobile battery voltage according to any one of claims 1-5, characterized in that the controller (1) is also connected with a voice module (7) for voice prompts , the voice module (7) includes a speaker (71) and a speaker driver chip (72), the input terminal of the speaker driver chip (72) is connected to the controller (1), and the output terminal of the speaker driver chip (72) is connected to the speaker (71) Input connection.

7. A voltage stabilizer circuit for digital display of automobile battery voltage according to any one of claims 1-5, characterized in that the controller (1) is also connected with a status indicator for displaying whether the battery voltage is abnormal Light circuit (8), the status indicator circuit (8) includes resistors R1-R2, light-emitting diodes D1-D2, the negative poles of light-emitting diode D1 and light-emitting diode D2 are respectively connected to the controller (3), and the light-emitting diodes The anode of D1 is connected to the voltage output end of the step-down voltage stabilization circuit (3) through the resistor R1, and the anode of the light-emitting diode D2 is connected to the voltage output end of the step-down voltage stabilization circuit (3) through the resistor R2.

8. A voltage stabilizer circuit for digital display of automobile battery voltage according to any one of claims 1-5, characterized in that the controller (1) is also connected with a light for enhancing the LCD display (6) A backlight circuit (9) for brightness, the backlight circuit (9) includes resistors R3-R4, light-emitting diodes D3-D4, the cathodes of the light-emitting diodes D3 and D4 are respectively connected to the controller (3), The anode of the light-emitting diode D3 is connected to the voltage output end of the step-down voltage stabilization circuit (3) through the resistor R3, and the anode of the light-emitting diode D4 is connected to the voltage output end of the step-down voltage stabilization circuit (3) through the resistor R4.

9. A voltage stabilizer circuit for digital display of automobile battery voltage according to any one of claims 1-5, characterized in that the controller (1) is also connected with a voltage discharge for battery discharge voltage A circuit (10), the positive voltage input terminal of the voltage discharge circuit (10) is connected to the positive pole of the battery, the negative voltage input terminal of the voltage discharge circuit (10) is connected to the negative pole of the battery, and the control signal input terminal of the voltage discharge circuit (10) Connect with controller (1).

10. A voltage stabilizer circuit for digital display of automobile battery voltage according to claim 9, characterized in that the voltage discharge circuit (10) includes a resistor R5, a resistor R7, and a transistor Q1, and the resistor R7 One end is connected to the controller (1) as the control signal input end, the other end of the resistor R7 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the positive pole of the battery voltage through the resistor R5, and the emitter of the transistor Q1 is grounded.