CN205317909U

CN205317909U - Apply to on -vehicle battery safety detection system of electric motor car

Info

Publication number: CN205317909U
Application number: CN201521045622.2U
Authority: CN
Inventors: 陈宝如
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2016-06-15
Anticipated expiration: 2025-12-15

Abstract

The utility model belongs to the technical field of the electric motor car technique and specifically relates to an apply to on -vehicle battery safety detection system of electric motor car. It is including the on -vehicle battery, signal acquisition converting circuit, singlechip, level conversion chip, RS -232 serial communication interface and the host computer that connect gradually, the singlechip is connected with temperature sensor. The utility model discloses temperature to on -vehicle battery detects in real time to ensure the temperature monitoring of on -vehicle battery, guarantee the temperature safety of on -vehicle battery, simultaneously, the unusual danger that brings work appears for preventing the voltage electric current, then utilize signal acquisition converting circuit to collect the voltage current information of on -vehicle battery feedback and change, and the user utilizes the host computer to realize looking over the data message to in time discover dangerous information, its simple structure, convenient operation has very strong practicality.

Description

A kind of on-vehicle battery safety detecting system applying to power truck

Technical field

The utility model relates to vehicle technology field, especially a kind of on-vehicle battery safety detecting system applying to power truck.

Background technology

It is well known that the contradiction of lack of energy and environmental disruption is day by day outstanding, based on the energy saving standard of electromobile, the development of electromobile has become inexorable trend. On-vehicle battery is the core position of electromobile, and battery management system research it is crucial that how effectively to utilize the energy of store battery, increase the work-ing life of battery. Battery management system can estimate residue electricity, it is ensured that in rational working range, fail battery can be carried out early prediction again, avoid due to cell destruction can not Timeliness coverage and reduce work-ing life of whole Battery pack. Therefore, the research of battery management system (bms) is more and more subject to people's attention

Practical novel content

For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of on-vehicle battery safety detecting system applying to power truck.

In order to realize above-mentioned purpose, the utility model adopts following technical scheme:

Applying to an on-vehicle battery safety detecting system for power truck, it comprises on-vehicle battery, signals collecting conversion circuit, temperature sensor, micro-chip, electrical level transferring chip, RS-232 serial communication interface and upper computer;

Described temperature sensor detects the temperature signal of on-vehicle battery in real time and the signal detected is inputed to micro-chip, voltage signal and electric current signal are inputed to signals collecting conversion circuit by described on-vehicle battery, signal is carried out Collect conversion and signal is inputed to micro-chip by described signals collecting conversion circuit, described micro-chip undertaken arranging by signal and by signal feedback to electrical level transferring chip, signal is carried out level conversion and is inputed to RS-232 serial communication interface and by RS-232 serial communication interface, signal is inputed to upper computer by the signal after conversion by described electrical level transferring chip.

Preferably, described micro-chip is STC89C52 micro-chip, and described electrical level transferring chip is MAX232 chip.

Preferably, described signals collecting conversion circuit comprises ADC0804 chip, 6 pins of described ADC0804 chip are connected with on-vehicle battery by the 3rd resistance, by the 4th resistance ground connection between described on-vehicle battery and the 3rd resistance, 4 pins of described ADC0804 chip are by the first electric capacity ground connection and are connected with 19 pins of self by the 5th resistance, 9 pins of described ADC0804 chip are by the first resistance access power supply and by the 2nd resistance ground connection, and 2 pins of described ADC0804 chip and 3 pins are connected with P3.6 pin and the P3.7 pin of micro-chip.

Preferably, described temperature sensor is DS18B20 temperature sensor, and the I/O pin of described temperature sensor and VCC pin are parallel with the 6th resistance, and the I/O pin of described temperature sensor is connected with the P22 pin of micro-chip.

Owing to have employed such scheme, the temperature of on-vehicle battery is detected by the utility model in real time, to guarantee the monitoring temperature of on-vehicle battery, ensures the temperature safety of on-vehicle battery; Meanwhile, for preventing electric current and voltage from abnormal danger work brought occur, then the electric current and voltage information utilizing signals collecting conversion circuit to be fed back by on-vehicle battery carries out collecting and changing; Further, user utilizes upper computer to realize logarithm and it is believed that checking of breath, thus Timeliness coverage dangerous information, its structure is simple, easy to operate, has very strong practicality.

Accompanying drawing explanation

Fig. 1 is the structural principle schematic diagram of the utility model embodiment;

Fig. 2 is the electrical block diagram of the signals collecting conversion circuit of the utility model embodiment;

Fig. 3 is the structural representation of the peripheral circuit of the temperature sensor of the utility model embodiment;

Fig. 4 is the structural representation of the peripheral circuit of the electrical level transferring chip of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

As shown in Figures 1 to 4, a kind of on-vehicle battery safety detecting system applying to power truck of the present embodiment, it comprises on-vehicle battery 1, signals collecting conversion circuit 2, temperature sensor 3, micro-chip 4, electrical level transferring chip 5, RS-232 serial communication interface 6 and upper computer 7;

Temperature sensor 3 detects the temperature signal of on-vehicle battery in real time and the signal detected is inputed to micro-chip 4, voltage signal and electric current signal are inputed to signals collecting conversion circuit 2 by on-vehicle battery 1, signal is carried out Collect conversion and signal inputs to micro-chip 4 by signals collecting conversion circuit 2, signal is carried out arranging by micro-chip 4 and by signal feedback to electrical level transferring chip 5, signal is carried out level conversion and the signal after conversion inputed to RS-232 serial communication interface 6 and signal is inputed to by RS-232 serial communication interface 6 upper computer 7 by electrical level transferring chip 5.

The temperature of on-vehicle battery 1 is detected by the present embodiment in real time, ensures on-vehicle battery temperature safety to guarantee the monitoring temperature of on-vehicle battery; Meanwhile, for preventing electric current and voltage from abnormal danger work brought occur, then the electric current and voltage information utilizing signals collecting conversion circuit 2 to be fed back by on-vehicle battery 1 carries out collecting and changing; Further, user utilizes upper computer 7 to realize logarithm and it is believed that checking of breath, thus Timeliness coverage dangerous information.

For optimization system, the micro-chip 4 of the present embodiment can adopt STC89C52 micro-chip, and electrical level transferring chip 5 can adopt MAX232 chip.

In the signals collecting conversion circuit 2 of the present embodiment, the simulating signal collected is continuous print in time, and the numerary signal being sent to micro-chip is discrete. therefore, signals collecting conversion circuit 2 to the analog signal sampling collected on specific time point, and must convert sampling numerical value to digital quantity and be sent to micro-chip 4. therefore the circuit structure of signals collecting conversion circuit 2 can adopt circuit structure as shown in Figure 2, namely ADC0804 chip U1 is comprised, 6 pins of ADC0804 chip U1 are connected with on-vehicle battery 1 by the 3rd resistance R3, by the 4th resistance R4 ground connection between on-vehicle battery 1 and the 3rd resistance R3, 4 pins of ADC0804 chip U1 are by the first electric capacity C1 ground connection and are connected with 19 pins of self by the 5th resistance R5, 9 pins of ADC0804 chip U1 access power supply by the first resistance R1 and pass through the 2nd resistance R2 ground connection, 2 pins of ADC0804 chip U1 and 3 pins are connected with P3.6 pin and the P3.7 pin of micro-chip 4.

Simultaneously, the present embodiment temperature sensor 3 adopt DS18B20 temperature sensor, the peripheral circuit of its temperature sensor 3 can adopt circuit structure as shown in Figure 3, namely the I/O pin of temperature sensor 3 and VCC pin are parallel with the 6th resistance R6, and the I/O pin of temperature sensor 3 is connected with the P22 pin of micro-chip 4. This temperature sensor 3 adopts monobus lin protocol, only takies an I/O port, directly outside temperature is changed into numerary signal, and Serial output is to micro-chip 4.

The present embodiment use TTL level due to micro-chip 4, and RS-232 serial communication interface 6 uses RS-232 level, for ensureing communication stability, this use electrical level transferring chip 5 is MAX232 chip, and it is turning between integrated RS-232 level and TTL level mutually simultaneously. the peripheral circuit of electrical level transferring chip 5 can adopt circuit structure as shown in Figure 4, namely the C2+ pin of electrical level transferring chip 5 and C2-pins in parallel have the 2nd electric capacity C2, the C-pin of electrical level transferring chip 5 and C+ pins in parallel have the 4th electric capacity C4, the V-pin of electrical level transferring chip C4 is by the 3rd electric capacity C3 ground connection, the V+ pin of electrical level transferring chip 5 accesses power supply by the 5th electric capacity C5, the VCC pin access power supply of electrical level transferring chip 5 is also by the 6th electric capacity C6 ground connection, T1IN pin and the R1OUT pin of electrical level transferring chip 5 are connected with micro-chip 4, the R1IN pin of electrical level transferring chip 5 and T1OUT pin are connected with RS-232 serial communication interface 6.

The foregoing is only preferred embodiment of the present utility model; not thereby patent scope of the present utility model is limited; every utilize the utility model specification sheets and accompanying drawing content to do equivalent structure or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all it is included in scope of patent protection of the present utility model with reason.

Claims

1. one kind applies to the on-vehicle battery safety detecting system of power truck, it is characterised in that: it comprises on-vehicle battery, signals collecting conversion circuit, temperature sensor, micro-chip, electrical level transferring chip, RS-232 serial communication interface and upper computer;

2. a kind of on-vehicle battery safety detecting system applying to power truck as claimed in claim 1, it is characterised in that: described micro-chip is STC89C52 micro-chip, and described electrical level transferring chip is MAX232 chip.

3. a kind of on-vehicle battery safety detecting system applying to power truck as claimed in claim 2, it is characterized in that: described signals collecting conversion circuit comprises ADC0804 chip, 6 pins of described ADC0804 chip are connected with on-vehicle battery by the 3rd resistance, by the 4th resistance ground connection between described on-vehicle battery and the 3rd resistance, 4 pins of described ADC0804 chip are by the first electric capacity ground connection and are connected with 19 pins of self by the 5th resistance, 9 pins of described ADC0804 chip are by the first resistance access power supply and by the 2nd resistance ground connection, 2 pins of described ADC0804 chip and 3 pins are connected with P3.6 pin and the P3.7 pin of micro-chip.

4. a kind of on-vehicle battery safety detecting system applying to power truck as claimed in claim 2, it is characterized in that: described temperature sensor is DS18B20 temperature sensor, the I/O pin of described temperature sensor and VCC pin are parallel with the 6th resistance, and the I/O pin of described temperature sensor is connected with the P22 pin of micro-chip.