CN217820567U

CN217820567U - Vehicle-mounted voltage detection alarm device

Info

Publication number: CN217820567U
Application number: CN202220787713.7U
Authority: CN
Inventors: 张广贺; 邹沁伶; 许文强; 李博; 朱恩岐; 蒋大顺; 王键; 马铭强
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-11-15
Anticipated expiration: 2032-04-06

Abstract

The utility model relates to an electric automobile technical field, concretely relates to vehicle-mounted voltage detection alarm device, include: the input end INPUTE + and INPUTE-of the detection circuit are respectively connected to the positive electrode and the negative electrode of the storage battery of the whole vehicle; the detection circuit comprises a first branch circuit, a second branch circuit and a third branch circuit; the output end of the first branch is connected with the input end of the second branch, the output end of the second branch is connected with the input end of the third branch, the output end of the third branch is connected with the input end of the sound alarm module, the sound alarm module converts an input signal into an audio signal, the output end of the sound alarm module is connected with the input end of a loudspeaker, and the loudspeaker gives an alarm after receiving the audio signal; compared with the traditional method for detecting the voltage by using a universal meter, the method can detect whether the storage battery is in an undervoltage state or not in real time, and once the voltage of the storage battery is lower than 11.2V, the method gives out a sound and gives an alarm.

Description

Vehicle-mounted voltage detection alarm device

Technical Field

The utility model relates to an electric automobile technical field, concretely relates to vehicle-mounted voltage detection alarm device.

Background

When the vehicle is electrically debugged, because the power generation system of the power management system does not work, the electric appliances of the whole vehicle are supplied with power by the storage battery, the voltage of the storage battery can gradually drop along with the continuous rising of the current during debugging, and when the voltage of the storage battery drops below 11.2V, the storage battery can enter an overdischarge state to cause the irreversible damage of the storage battery;

in the electrical debugging process of the vehicle in the prior art, in order to prevent the condition that the whole vehicle cannot normally work due to low voltage of the storage battery during debugging, the storage battery voltage is measured in stages by using a multimeter, the voltage state of the storage battery is monitored manually, the measurement result is inaccurate, and the labor cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the measuring result among the prior art inaccurate, and the high defect of human cost to a vehicle-mounted voltage detection alarm device is provided.

An on-vehicle voltage detection alarm device includes: the input end INPUTE + and the input end INPUTE-of the detection circuit are respectively connected to the positive electrode and the negative electrode of the whole vehicle storage battery;

the detection circuit comprises a first branch circuit, a second branch circuit and a third branch circuit; the output of first branch road with the input of second branch road is connected the second branch road output with the third branch road input is connected, the third branch road output with the audible alarm module input is connected, audible alarm module converts the signal of input into audio signal, the audible alarm module output is connected with the loudspeaker input, report to the police after loudspeaker receive audio signal.

Further, first branch includes four emitting diode LED1, LED2, LED3, LED4 and resistance R1, emitting diode LED 1's positive pole as the input with input INPUTE + connects, emitting diode LED 1's negative pole with emitting diode LED2 positive pole is connected, emitting diode LED2 negative pole with emitting diode LED3 positive pole is connected, emitting diode LED3 negative pole with emitting diode LED4 positive pole is connected, emitting diode LED 4's negative pole with resistance R1 one end is connected, the resistance R1 other end with input INPUTE-is connected.

Further, the second branch road includes resistance R2, resistance R3, resistance R4 and triode T1, resistance R3 and resistance R4 are parallelly connected and are formed parallel circuit, with parallel circuit one end is the input, the other end with triode T1's collecting electrode is connected, triode T1 base with emitting diode LED 4's negative pole is connected, and is equipped with resistance R2 in the middle of the two, triode T1 projecting pole with input INPUTE-is connected.

Further, the third branch comprises a resistor R5 and a triode T2, one end of the resistor R5 is used as an input end, the other end of the resistor R5 is connected with a collector of the triode T2, a base of the triode T2 is connected with a collector of the triode T1, and an emitter of the triode is connected with the input end INPUTE-.

Further, the audible alarm module includes power VCC +, power GND-, audible alarm module signal input point K1 and signal ground V GND, power VCC + with input INPUTE + is connected, power GND-is connected with input INPUTE-, audible alarm module signal input point K1 with triode T2's collecting electrode is connected, signal ground V GND ground connection.

Furthermore, the sound alarm module is also provided with a sound size control assembly.

Furthermore, a USB debugging port is also arranged on the sound alarm module.

Further, the resistors R1=1K Ω, R2=100 Ω, R3=680 Ω, R4=1K Ω, and R5=680 Ω.

Further, the triodes T1 and T2 are both S8050 type.

The utility model discloses technical scheme has following advantage:

1. the voltage alarm measurement is accurate;

2. the invention completely breaks away from manual operation, thus saving the labor cost;

3. the structure is small and exquisite, conveniently carries.

4. Compared with the traditional method for detecting the voltage by using a universal meter, the method can detect whether the storage battery is in an undervoltage state or not in real time, and can give an audible alarm once the voltage of the storage battery is lower than 11.2V

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an electrical schematic diagram of the present invention;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a vehicle-mounted voltage detection alarm device includes: the input end INPUTE + and the input end INPUTE-of the detection circuit are respectively connected to the positive electrode and the negative electrode of the whole vehicle storage battery;

the detection circuit comprises a first branch circuit, a second branch circuit and a third branch circuit; the output of first branch road with the input of second branch road is connected the second branch road output with the third branch road input is connected, the third branch road output with the audible alarm module input is connected, audible alarm module converts the signal of input into audio signal, the audible alarm module output is connected with the loudspeaker input, report to the police after the audio signal is received to loudspeaker.

The first branch comprises four light emitting diodes (LED 1, LED2, LED3, LED 4) and a resistor R1, the anode of the LED1 is used as an input end and is connected with an input end INPUTE +, the cathode of the LED1 is connected with the anode of the LED2, the cathode of the LED2 is connected with the anode of the LED3, the cathode of the LED3 is connected with the anode of the LED4, the cathode of the LED4 is connected with one end of the resistor R1, and the other end of the resistor R1 is connected with the input end INPUTE-.

The second branch circuit comprises a resistor R2, a resistor R3, a resistor R4 and a triode T1, the resistor R3 and the resistor R4 are connected in parallel to form a parallel circuit, one end of the parallel circuit is used as an input end, the other end of the parallel circuit is connected with a collector of the triode T1, a base of the triode T1 is connected with a cathode of the LED4, the resistor R2 is arranged between the base and the cathode, and an emitting electrode of the triode T1 is connected with an input end INPUTE.

The third branch circuit comprises a resistor R5 and a triode T2, one end of the resistor R5 is used as an input end, the other end of the resistor R is connected with a collector electrode of the triode T2, a base electrode of the triode T2 is connected with a collector electrode of the triode T1, and an emitting electrode of the triode is connected with the input end input.

The audible alarm module includes power VCC +, power GND-, audible alarm module signal input point K1 and signal ground V GND, power VCC + with input INPUTE + is connected, power GND-is connected with input INPUTE-, audible alarm module signal input point K1 with triode T2's collecting electrode is connected, signal ground V GND ground connection.

When the voltage of the storage battery is detected, the input end INPUTE + and INPUTE are connected into the positive electrode and the negative electrode of the storage battery of the whole vehicle, if the voltage of the storage battery is higher than 11.2V, the diodes LED1, LED2, LED3 and LED4 reach breakdown voltage and are conducted, the base electrode of the triode T1 forms partial pressure, the emitter electrode and the collector electrode of the triode T1 are conducted, the base electrode of the triode T2 is grounded, the collector electrode and the emitter electrode of the triode T2 are not conducted, the triode T2 is cut off, the K1 point of the sound alarm module inputs high level, the alarm condition of the sound alarm module is not triggered, and the sound alarm module does not drive a loudspeaker to alarm.

When the voltage of the storage battery is detected, the input end IPUTE + and INPUTE-are connected into the positive electrode and the negative electrode of the storage battery of the whole vehicle, if the voltage of the storage battery is lower than 11.2V, the diodes LED1, LED2, LED3 and LED4 are not up to breakdown voltage and are cut off, the base voltage of the triode T1 is 0, the emitter and the collector of the triode T1 are cut off, the base of the triode T2 is at high level, the collector and the emitter of the triode T2 are conducted, the triode T2 is conducted, the K1 point of the sound alarm module inputs low level, the low level triggers the alarm condition of the sound alarm module, and the loudspeaker is driven to perform sound alarm, namely the storage battery is low in voltage and charge is requested.

And the sound alarm module is also provided with a sound size control assembly.

And the sound alarm module is also provided with a USB debugging port.

The resistors R1=1K Ω, R2=100 Ω, R3=680 Ω, R4=1K Ω, and R5=680 Ω.

The triodes T1 and T2 are both S8050 type.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a vehicle-mounted voltage detection alarm device which characterized in that includes: the input end INPUTE + and the input end INPUTE-of the detection circuit are respectively connected to the positive electrode and the negative electrode of the whole vehicle storage battery;

2. The apparatus according to claim 1, wherein the first branch comprises four light emitting diodes LED1, LED2, LED3, LED4 and a resistor R1, an anode of the light emitting diode LED1 is connected as an input terminal to the input terminal input +, a cathode of the light emitting diode LED1 is connected to the anode of the light emitting diode LED2, a cathode of the light emitting diode LED2 is connected to the anode of the light emitting diode LED3, a cathode of the light emitting diode LED3 is connected to the anode of the light emitting diode LED4, a cathode of the light emitting diode LED4 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the input terminal input-.

3. The apparatus according to claim 2, wherein the second branch comprises a resistor R2, a resistor R3, a resistor R4 and a transistor T1, the resistor R3 and the resistor R4 are connected in parallel to form a parallel circuit, one end of the parallel circuit is used as an input end, the other end of the parallel circuit is connected to a collector of the transistor T1, a base of the transistor T1 is connected to a cathode of the light emitting diode LED4, and a resistor R2 is arranged therebetween, and an emitter of the transistor T1 is connected to the input end input.

4. The apparatus according to claim 3, wherein the third branch comprises a resistor R5 and a transistor T2, one end of the resistor R5 is used as an input terminal, the other end is connected to the collector of the transistor T2, the base of the transistor T2 is connected to the collector of the transistor T1, and the emitter of the transistor T2 is connected to the input terminal input-.

5. The apparatus according to claim 4, wherein the audio alarm module comprises a power source VCC +, a power source GND-, an audio alarm module signal input point K1 and a signal ground GND, the power source VCC + is connected to the input terminal INPUTE +, the power source GND-is connected to the input terminal INPUTE-, the audio alarm module signal input point K1 is connected to the collector of the triode T2, and the signal ground GND is grounded.

6. The device of claim 5, wherein the sound alarm module is further provided with a sound level control component.

7. The device of claim 6, wherein the sound alarm module is further provided with a USB debugging port.

8. The apparatus of claim 4, wherein the resistors R1=1K Ω, R2=100 Ω, R3=680 Ω, R4=1K Ω, and R5=680 Ω.

9. A device according to claim 3 or 4, wherein the transistors T1, T2 are of the S8050 type.