CN218383719U

CN218383719U - Battery state monitoring system

Info

Publication number: CN218383719U
Application number: CN202222939178.5U
Authority: CN
Inventors: 陈亨睿; 郭超; 陈婧
Original assignee: Guizhou Jiaotong College
Current assignee: Guizhou Jiaotong College
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-01-24
Anticipated expiration: 2032-11-04

Abstract

The utility model provides a battery state monitoring system; the device comprises a main control circuit, and a serial port circuit, a sampling circuit, a reset circuit and a communication circuit which are respectively connected with a main hole circuit; the utility model discloses a sampling circuit is during battery voltage analog signal converts the digital signal input to the singlechip into, and the singlechip can transmit battery voltage data to the host computer through serial circuits and take notes the judgement to send the abnormal information report when the battery is unusual through communication circuit, make things convenient for the car owner to look over.

Description

Battery state monitoring system

Technical Field

The utility model relates to a battery state monitoring system.

Background

With the development of new energy vehicles, users of new energy vehicles are increasing, the new energy vehicles use batteries as energy sources of the vehicles, and the states of the batteries determine the motion states of the vehicles, so that a lot of equipment for monitoring the batteries is needed, for example, a battery voltage monitoring protector based on an STC (standard time series) single chip microcomputer is disclosed in the publication No. CN212366868U, the batteries are electrically connected through a battery connecting socket through a voltage acquisition voltage division circuit, the acquired battery voltage is input to the single chip microcomputer for comparison and monitoring, and when the battery voltage is detected to be abnormal, a user is prompted to pay attention to power utilization safety in an audible and visual alarm mode, but only an alarm circuit is arranged, the function of transmitting the monitoring data of the batteries to an upper computer is not provided, so that maintenance personnel can hardly judge the working states of the batteries so as to facilitate maintenance and repair.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a battery state monitoring system.

The utility model discloses a following technical scheme can realize.

The utility model provides a battery state monitoring system; the device comprises a main control circuit, and a serial port circuit, a sampling circuit, a reset circuit and a communication circuit which are respectively connected with a main hole circuit;

the main control circuit comprises a singlechip U1, pins 36-39 of the singlechip U1 are connected with a sampling circuit, pins 10 and 11 of the singlechip U1 are connected with a serial port circuit and a communication circuit, pin 9 of the singlechip U1 is connected with a reset circuit, and pin 40 and pin 20 of the singlechip U are respectively connected with a power supply VCC and grounded.

The serial port circuit comprises a serial port chip U3, a pin 2 of the serial port chip U3 is connected with a negative electrode of a diode D1, a positive electrode of the diode D1 is connected with a pin 10 of the singlechip U1, and a pin 3 of the serial port chip U3 is connected with a pin 11 of the singlechip U1 through a resistor; the 7 pin and the 8 pin of the serial port chip are connected with the crystal oscillator Y3 and respectively connected with the capacitor grounding, the 16 pin is connected with the power supply USB VCC and respectively grounded through the capacitor C10 and the polar capacitor C11, the 5 pin and the 6 pin are respectively connected with the USB interface, and the 4 pin is connected with the grounding end of the USB interface.

The sampling circuit comprises an AD conversion chip U6, pins 18-21 of the AD conversion chip U6 are respectively connected with pins 36-39 of the single chip microcomputer U1, pins 26-28 of the AD conversion chip U6 are connected with a battery through a wiring terminal,

pins

6, 7 and 10 of the AD conversion chip U are respectively connected with

pins

10, 12 and 13 of the single chip microcomputer U1, and

pins

10 and 13 of the AD conversion chip U are respectively connected with a power supply VCC and a ground.

The communication circuit comprises a chip U5, and pins 1 and 2 of the chip U5 are respectively connected with pins 10 and 11 of the single chip microcomputer.

Reset circuit includes reset switch K1, and reset switch K1's one end and polarity electric capacity C2's positive pole are connected with the power VCC, and reset switch K1's the other end is connected with diode D8's negative pole and polarity electric capacity C2's negative pole, and the positive pole of polarity electric capacity is connected with resistance R1 and singlechip U1's 9 pins, and diode D8's the positive pole and resistance R1's the other end ground connection.

Pins

18 and 19 of the single chip microcomputer U1 are further connected with two ends of the crystal oscillator Y1 respectively, two ends of the crystal oscillator Y1 are further connected with a capacitor C3 and a capacitor C4 respectively, and the other ends of the capacitor C3 and the capacitor C4 are grounded.

The power VCC is also connected with the anode of the light emitting diode D2, and the cathode of the light emitting diode is grounded.

The beneficial effects of the utility model reside in that: during the singlechip was input to battery voltage conversion analog signal through sampling circuit, the singlechip can be with battery voltage data through serial circuits transmission to the host computer and take notes to through communication circuit abnormal information report takes place when the battery is unusual, make things convenient for the car owner to look over.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions of the present invention are further described below, but the scope of protection claimed is not limited to the described ones.

A battery condition monitoring system; the device comprises a main control circuit, and a serial port circuit, a sampling circuit, a reset circuit and a communication circuit which are respectively connected with a main hole circuit;

the main control circuit comprises a singlechip U1, pins 36-39 of the singlechip U1 are connected with a sampling circuit, pins 10 and 11 of the singlechip U1 are connected with a serial port circuit and a communication circuit, pin 9 of the singlechip U is connected with a reset circuit, and pin 40 and pin 20 of the singlechip U are respectively connected with a power supply VCC and grounded.

pins

6, 7 and 10 of the AD conversion chip U are respectively connected with

pins

10, 12 and 13 of the single chip microcomputer U1, and

pins

Reset circuit includes reset switch K1, and reset switch K1's one end and polarity electric capacity C2's positive pole are connected with the power VCC, and reset switch K1's the other end is connected with diode D8's negative pole and polarity electric capacity C2's negative pole, and the positive pole of polarity electric capacity is connected with resistance R1 and singlechip U1's 9 pins, diode D8's the anodal and resistance R1's the other end ground connection.

Pins

18 and 19 of the single chip microcomputer U1 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with the capacitor C3 and the capacitor C4, and the other ends of the capacitor C3 and the capacitor C4 are grounded.

The power source VCC is also connected with the anode of the light emitting diode D2, and the cathode of the light emitting diode is grounded.

The single chip microcomputer U1 adopts an STC12C5A60S2 single chip microcomputer, analog voltage signals of a battery are converted into digital signals through an AD conversion chip ADC0809CCVX in the sampling circuit and then are input into the single chip microcomputer U1, the single chip microcomputer U1 compares the voltage signals and enables a main control chip of the single chip microcomputer U to pass through RxD and TxD pins, an input CH340G chip is connected with an upper computer, detected voltage signals can be directly transmitted to the upper computer system through a serial port mode, and the signals are output to loop current signals through secondary processing. The abnormal signal is transmitted to the mobile phone of the user through the ATK-M750C communication chip. In order to supplement the situation of different resistances, four pins of P3.4, P3.5, P3.6 and P3.7 are added, so that the external expansion module can be supplemented conveniently, and the resistance value adjustment module is used for adjusting the resistance value during the detection of different battery voltages so as to obtain the optimal detection result.

Claims

1. A battery condition monitoring system, characterized by: the device comprises a main control circuit, and a serial port circuit, a sampling circuit, a reset circuit and a communication circuit which are respectively connected with a main hole circuit;

2. The battery condition monitoring system of claim 1, wherein: the serial port circuit comprises a serial port chip U3, a pin 2 of the serial port chip U3 is connected with a negative electrode of a diode D1, a positive electrode of the diode D1 is connected with a pin 10 of the singlechip U1, and a pin 3 of the serial port chip U3 is connected with a pin 11 of the singlechip U1 through a resistor; the 7 pin and the 8 pin of the serial port chip are connected with the crystal oscillator Y3 and respectively connected with the capacitor grounding, the 16 pin is connected with the power supply USB VCC and respectively grounded through the capacitor C10 and the polar capacitor C11, the 5 pin and the 6 pin are respectively connected with the USB interface, and the 4 pin is connected with the grounding end of the USB interface.

3. The battery condition monitoring system of claim 1, wherein: the sampling circuit comprises an AD conversion chip U6, pins 18-21 of the AD conversion chip U6 are respectively connected with pins 36-39 of the single chip microcomputer U1, pins 26-28 of the AD conversion chip U6 are connected with a battery through a wiring terminal, pins 6, 7 and 10 of the AD conversion chip U are respectively connected with pins 10, 12 and 13 of the single chip microcomputer U1, and pins 10 and 13 of the AD conversion chip U are respectively connected with a power supply VCC and a ground.

4. The battery condition monitoring system according to claim 1, wherein: the communication circuit comprises a chip U5, and pins 1 and 2 of the chip U5 are respectively connected with pins 10 and 11 of the single chip microcomputer.

5. The battery condition monitoring system of claim 1, wherein: reset circuit includes reset switch K1, and reset switch K1's one end and polarity electric capacity C2's positive pole are connected with the power VCC, and reset switch K1's the other end is connected with diode D8's negative pole and polarity electric capacity C2's negative pole, and the positive pole of polarity electric capacity is connected with 9 pins of resistance R1 and singlechip U1, and diode D8's the positive pole and resistance R1's the other end ground connection.

6. The battery condition monitoring system of claim 1, wherein: pins 18 and 19 of the single chip microcomputer U1 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with the capacitor C3 and the capacitor C4, and the other ends of the capacitor C3 and the capacitor C4 are grounded.

7. The battery condition monitoring system of claim 1, wherein: the power source VCC is also connected with the anode of the light emitting diode D2, and the cathode of the light emitting diode is grounded.