CN202574130U

CN202574130U - Electric vehicle anti-theft security device

Info

Publication number: CN202574130U
Application number: CN 201220165682
Authority: CN
Inventors: 曲保章
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-19
Filing date: 2012-04-19
Publication date: 2012-12-05
Anticipated expiration: 2022-04-19

Abstract

The utility model provides an electric vehicle anti-theft security device. The electric vehicle anti-theft security device comprises a single chip microcomputer (SCM) control unit, a radio frequency identification device (RFID) communication unit, an electric vehicle sensor module, an alarm circuit, electric vehicle storage batteries and a storage battery power supply control circuit. The RFID communication unit and the SCM control unit are communicated with each other about heartbeat signals to achieve automatic protection of an electric vehicle, the SCM control unit judges whether to control to connect or disconnect the storage battery power supply control circuit according to automatic protection status of the electric vehicle, and the SCM control unit judges whether to control the alarm circuit to alarm according to electric vehicle vibration signals or moving signals collected by the electric vehicle sensor module and the automatic protection status of the electric vehicle. According to the electric vehicle anti-theft security device, the RFID technology is utilized, automatic protection and protection cancelling of the electric vehicle are achieved, the problem of protection shortage due to the fact that a user forgets to turn on a protection system is avoided, and anti-theft effect is improved.

Description

The battery-driven car safety theftproof device

Technical field

The utility model relates to a kind of anti-joyride device, specifically, has related to a kind of battery-driven car safety theftproof device.

Background technology

The anti-theft feature of general battery-driven car is realized by following mode: anti-theft circuit is received on the electromobile battery of battery-driven car through a switch; Wherein, anti-theft circuit is made up of DC/DC power transfer module, vibration sensor, control unit and alarming horn, switch closure when the car owner leaves; Burglar alarm begins to power up work; When the people moved or touches battery-driven car, vibration sensor output electric signal was given control unit, and control unit is then controlled alarming horn and sent alarm sound to reach the theft-proof effect of caution; Yet; Such anti-joyride device exists following problem: 1, the anti-theft circuit switch needs the artificial closure of controlling it, and inconvenience also can occur sometimes leaking and deploy troops on garrison duty; 2, the bad adjustment of the sensitivity of vibration sensor, often wrong report; 3, outside anti-theft circuit is exposed to, be destroyed easily; 4, anti-theft effect is undesirable.

Therefore, even battery-driven car has been loaded onto anti-joyride device, the anti-theft effect that can play is still very little, and the battery-driven car especially stolen phenomenon of electromobile battery remains of common occurrence.

In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.

Summary of the invention

The purpose of the utility model is the deficiency to prior art, can deploy troops on garrison duty automatically thereby provide a kind of, and good anti-theft effect can be carried out the battery-driven car safety theftproof device that electromobile battery discharges and recharges control.

To achieve these goals; The technical scheme that the utility model adopted is: a kind of battery-driven car safety theftproof device, and it comprises Single-chip Controlling unit, RFID communication unit, battery-driven car sensor assembly, warning circuit, electromobile battery and storage battery power supply control circuit; Said RFID communication unit comprise the RFID identification circuit and with car owner's identity RFID identification card of said RFID identification circuit communication, said RFID identification circuit connects said Single-chip Controlling unit so that said RFID communication unit and said Single-chip Controlling unit carry out the heartbeat communication and realize deploying troops on garrison duty automatically of battery-driven car with this; Two switch terminals of said storage battery power supply control circuit are connected on the battery-driven car current supply circuit of said electromobile battery, and the power supply control end of said Single-chip Controlling unit connects the power supply control end of said storage battery power supply control circuit so that judge whether to control the break-make of said storage battery power supply control circuit according to the state of deploying troops on garrison duty automatically of battery-driven car; Said battery-driven car sensor assembly connects said Single-chip Controlling unit so that gather battery-driven car vibration signal or movable signal, and said Single-chip Controlling unit connects said warning circuit so that judge whether to report to the police according to the battery-driven car vibration signal of collection or the state of deploying troops on garrison duty automatically of movable signal and battery-driven car.

Based on above-mentioned; It also comprises battery state of charge sample circuit and storage battery charge control circuit, and said battery state of charge sample circuit connects said Single-chip Controlling unit so that gather battery temp signal, battery tension signal and charging valtage signal; Two switch terminals of said storage battery charge control circuit are serially connected in the charge circuit of said electromobile battery, and the charging control end of said Single-chip Controlling unit connects the charging control end of said storage battery charge control circuit so that judge whether to control the break-make of said storage battery charge control circuit according to battery temp signal, battery tension signal and the charging valtage signal gathered.

Based on above-mentioned; It also comprises the working power module; The power supply input end of said working power module connects the power supply mouth of said electromobile battery, and the power supply mouth of said working power module connects said Single-chip Controlling unit, said RFID communication unit, said battery-driven car sensor assembly and said battery state of charge sample circuit respectively to provide work required power line voltage; The power supply mouth of said electromobile battery connects said warning circuit, said storage battery power supply control circuit and said storage battery charge control circuit respectively to provide work required power line voltage.

Based on above-mentioned; Said storage battery power supply control circuit and said storage battery charge control circuit are same ON-OFF control circuits; Said ON-OFF control circuit comprises relay J S1, FET Q2 and plate J1; The grid of said FET Q2 connects an end of resistance R 11, and the other end of said resistance R 11 is as the control end of said ON-OFF control circuit, and the grid of said FET Q2 connects an end of resistance R 12; The other end ground connection of said resistance R 12; The source ground of said FET Q2, the drain electrode of said FET Q2 connect an end of said relay J S1 coil, and the other end of said relay J S1 coil is used to connect the power input of said ON-OFF control circuit; The anode of discharge diode D4 connects an end of said relay J S1 coil, and the negative electrode of said discharge diode D4 connects the other end of said relay J S1 coil; First interface of said plate J1 and the 4th interface are connected respectively to the two ends of the pair of contact of said relay J S1; Second interface of said plate J1 and the 3rd interface ground connection; First interface of said plate J1 and second interface be used to be connected charger charging output interface or electric vehicle motor use electrical interface, the 3rd interface of said plate J1 and the 4th interface are used to be connected the power supply mouth of said electromobile battery.

Based on above-mentioned; Said ON-OFF control circuit also includes auxiliary charging circuit; Said auxiliary charging circuit comprises resistance R 13 and diode D5; First interface of the said plate J1 of one termination of said resistance R 13, the anode of the said diode D5 of another termination of said resistance R 13, the negative electrode of said diode D5 connects the 4th interface of said plate J1.

The relative prior art of the utility model has substantive distinguishing features and progress, specifically, the utlity model has following characteristics:

1, adopts the RFID technology, make the battery-driven car automation of deploying troops on garrison duty, withdraw a garrison, avoid the people to forget the leakage that the causes problem of deploying troops on garrison duty;

2, the someone moves battery-driven car or electromobile battery not only can produce audible alarm, and can break off the battery-driven car power supply, has ensured theft-proof effect;

3, possess the charging controllable function, avoided overvoltage in the process of charging, overheated setting off an explosion to catch fire and cause artificial injures and deaths and property damage.

Description of drawings

Fig. 1 is the structured flowchart of the utility model.

Fig. 2 is the electrical block diagram of working power module.

Fig. 3 is the circuit theory scheme drawing of RFID communication unit.

Fig. 4 is battery-driven car sensor assembly, warning circuit, ON-OFF control circuit and singlechip chip U1 bonded assembly circuit theory scheme drawing.

Fig. 5 is the scheme drawing of battery state of charge sample circuit.

The specific embodiment

Through the specific embodiment, the technical scheme of the utility model is done further detailed description below.

As shown in Figure 1; A kind of battery-driven car safety theftproof device, it comprises Single-chip Controlling unit, RFID communication unit, battery-driven car sensor assembly, warning circuit, storage battery power supply control circuit, battery state of charge sample circuit, storage battery charge control circuit, electromobile battery and working power module; Said Single-chip Controlling unit comprises peripheral circuits such as singlechip chip U1 and crystal oscillating circuit, the reset circuit of model STC12C5608AD.

Said working power module is that voltage transformation chip U2 and the peripheral circuit thereof of LM2576HV-5.0 formed by model mainly; As shown in Figure 2; The 48V voltage of said electromobile battery is imported from input end IN after capacitor C 5 filtering; The 48V voltage of input is through after the conversion of said voltage transformation chip U2, from the burning voltage of mouth OUT output 5V; The 5V output voltage of said working power module is used for providing work required power line voltage to said Single-chip Controlling unit, said RFID communication unit, said battery-driven car sensor assembly and said battery state of charge sample circuit, and the operating voltage of said warning circuit, said storage battery power supply control circuit and said storage battery charge control circuit is then provided by said electromobile battery.

As shown in Figure 3; Said RFID communication unit comprises RFID identification circuit and car owner's identity RFID identification card; Said RFID identification circuit comprises that model is RFID chip U3 and the peripheral circuit thereof of NRF24L01; The password projector that said car owner's identity RFID identification card is made up of LED 1, diode D2, resistance R 2 and capacitor C 7; Said car owner's identity RFID identification card can carry out wireless telecommunications with said RFID chip U3, and said RFID chip U3 is connected with said singlechip chip U1, makes said car owner's identity RFID identification card carry out the heartbeat communication through said RFID chip U3 and said singlechip chip U1; When the card number password that the said car owner's identity RFID identification card that receives as said singlechip chip U1 sends is consistent with the password of its storage; Device is in the state of withdrawing a garrison; Said electromobile battery is normally supplied power to electric vehicle motor; In case said car owner's identity RFID identification card leaves the battery-driven car certain distance; When said singlechip chip U1 did not receive the card number password of said car owner's identity RFID identification card transmission, device can be deployed troops on garrison duty automatically, at this moment; Said singlechip chip U1 controls said storage battery power supply control circuit and cuts off the loop of said electromobile battery to the electric vehicle motor power supply, and said battery-driven car sensor assembly and said warning circuit are in the monitoring state.

As shown in Figure 4, said battery-driven car sensor assembly is composed in series by vibration sensor SW1 and resistance R 5, and the series connection point of said vibration sensor SW1 and said resistance R 5 is connected the P3.3 pin of said singlechip chip U1; Said warning circuit mainly is made up of buzzer phone SP1 and FET Q1; Wherein, The grid of said FET Q1 connects the P3.5 pin of said singlechip chip U1 through input resistance R9, and the two ends of said buzzer phone SP1 connect drain electrode and the said electromobile battery power supply mouth of said FET Q1, the source ground of said FET Q1; The two ends of said buzzer phone SP1 also are parallel with a discharge diode D3; Wherein, the anode of said discharge diode D3 connects the drain electrode of said FET Q1, and the negative electrode of said discharge diode D3 connects said electromobile battery power supply mouth; Battery-driven car in being in the state of deploying troops on garrison duty is vibrated or when mobile, said vibration sensor SW1 output electric signal, and said singlechip chip U1 receives the electric signal that said vibration sensor SW1 sends over; After relevant software processes; Said singlechip chip U1 promptly sends alarm command to said warning circuit, and after said warning circuit received alarm command, said FET Q1 was conducting; Said buzzer phone SP1 gets the electric warning of sounding, and caution car owner battery-driven car is in the state of being moved.

Control for the ease of said electromobile battery charging and power supply; Said storage battery power supply control circuit and said storage battery charge control circuit use same ON-OFF control circuit; The connection of concrete control circuit is as shown in Figure 4, and said ON-OFF control circuit comprises relay J S1, FET Q2 and plate J1, and the grid of said FET Q2 connects an end of resistance R 11; The other end of said resistance R 11 is as the P3.4 pin of the said singlechip chip U1 of control termination of said ON-OFF control circuit; The grid of said FET Q2 connects an end of resistance R 12, the other end ground connection of said resistance R 12, the source ground of said FET Q2; The drain electrode of said FET Q2 connects an end of said relay J S1 coil; The other end of said relay J S1 coil is used to connect the power input of said ON-OFF control circuit, and the anode of discharge diode D4 connects an end of said relay J S1 coil, and the negative electrode of said discharge diode D4 connects the other end of said relay J S1 coil; First interface of said plate J1 and the 4th interface are connected respectively to the two ends of the pair of contact of said relay J S1; Second interface of said plate J1 and the 3rd interface ground connection; First interface of said plate J1 and second interface be used to be connected charger charging output interface or electric vehicle motor use electrical interface, the 3rd interface of said plate J1 and the 4th interface are used to be connected the power supply mouth of said electromobile battery; Said ON-OFF control circuit also is connected with auxiliary charging circuit; Said auxiliary charging circuit comprises resistance R 13 and diode D5; First interface of the said plate J1 of one termination of said resistance R 13; The anode of the said diode D5 of another termination of said resistance R 13, the negative electrode of said diode D5 connects the 4th interface of said plate J1; Be lower than 48V at said electromobile battery voltage, in the time of may causing said relay J S1 to have no idea adhesive, can carry out low current charge with diode D5 through resistance R 13.

As shown in Figure 5, said battery state of charge sample circuit comprises battery temp voltage sampling circuit, battery tension sample circuit and charging valtage sample circuit; Said battery temp voltage sampling circuit is composed in series with thermally dependent resistor RT1 by resistance R 6, and the P1.2 pin of the said singlechip chip U1 of output termination of said battery temp voltage sampling circuit is to detect the temperature of said storage battery; Said battery tension sample circuit is composed in series by resistance R 7 and resistance R 8, and the P1.1 pin of the said singlechip chip U1 of output termination of said battery tension sample circuit is to detect the voltage of said storage battery; Said charging valtage sample circuit then is composed in series by resistance R 14 and resistance R 15, and whether the P1.2 pin of the said singlechip chip U1 of output termination of said charging valtage sample circuit connects charger to detect; For the be more convenient for reception of said singlechip chip U1 pin of the signal that makes each sampling, No. three sample circuits can also add filter capacitor C17, C18 and C19.

Said ON-OFF control circuit comprises charging state of a control and these two kinds of state of a controls of electric vehicle electric control state, and whether the switching of two kinds of state of a controls is read said car owner's identity RFID identification card information and judged by whether connecting charger and said singlechip chip U1.

When battery-driven car is electrically-charged; The charging output interface of charger connects first interface and second interface of said plate J1; Said charging valtage sample circuit sampling charging valtage, said singlechip chip U1 detects charger and connects, and the heartbeat communication between said Single-chip Controlling unit and the said car owner's identity RFID identification card stops; At this moment; Said ON-OFF control circuit gets into the charging state of a control, and then said battery temp voltage sampling circuit detects the temperature of said electromobile battery, and said battery tension sample circuit detects the voltage of said electromobile battery; When said electromobile battery overheated or overvoltage occur in process of charging; Said singlechip chip U1 exports control signal according to the result of said battery temp voltage sampling circuit and the detection of said battery tension sample circuit to said ON-OFF control circuit, controls said relay J S1 and breaks off, and charges to said electromobile battery thereby stop charger; This has not only been avoided the long potential safety hazard that possibly cause of charging duration, has also prolonged the service life of said electromobile battery.

After pulling out charger; Said singlechip chip U1 detects charger and breaks off; Heartbeat communication between said Single-chip Controlling unit and the said car owner's identity RFID identification card recovers; Said ON-OFF control circuit gets into electric vehicle electric control state, and at this moment, first interface of said plate J1 and second interface connect the electrical interface of using of electric vehicle motor; When said Single-chip Controlling unit received the password consistent with car owner's identity RFID identification card, battery-driven car was in the state of withdrawing a garrison, and said electromobile battery is normally supplied power to electric vehicle motor; When said Single-chip Controlling unit does not receive the password consistent with car owner's identity RFID identification card; Battery-driven car gets into the state of deploying troops on garrison duty; Be that said singlechip chip U1 exports control signal to said ON-OFF control circuit, control said relay J S1 and break off, supply power to electric vehicle motor thereby stop said electromobile battery; If have the people to move battery-driven car this moment, said warning circuit is promptly reported to the police with the caution car owner.

What need special version is: the concrete placement when installing; The said battery-driven car sensor assembly of the utility model, said ON-OFF control circuit and battery state of charge sample circuit are sealed in the housing of said electromobile battery; Stopped the interference of the factor that comes from the outside, further guaranteed theft-proof stability it.

Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although with reference to preferred embodiment the utility model has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can make amendment to the specific embodiment of the utility model perhaps is equal to replacement to the part technical characterictic; And not breaking away from the spirit of the utility model technical scheme, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.

Claims

1. battery-driven car safety theftproof device, it is characterized in that: it comprises Single-chip Controlling unit, RFID communication unit, battery-driven car sensor assembly, warning circuit, electromobile battery and storage battery power supply control circuit; Said RFID communication unit comprise the RFID identification circuit and with car owner's identity RFID identification card of said RFID identification circuit communication, said RFID identification circuit connects said Single-chip Controlling unit so that said RFID communication unit and said Single-chip Controlling unit carry out the heartbeat communication and realize deploying troops on garrison duty automatically of battery-driven car with this; Two switch terminals of said storage battery power supply control circuit are connected on the battery-driven car current supply circuit of said electromobile battery, and the power supply control end of said Single-chip Controlling unit connects the power supply control end of said storage battery power supply control circuit so that judge whether to control the break-make of said storage battery power supply control circuit according to the state of deploying troops on garrison duty automatically of battery-driven car; Said battery-driven car sensor assembly connects said Single-chip Controlling unit so that gather battery-driven car vibration signal or movable signal, and said Single-chip Controlling unit connects said warning circuit so that judge whether to report to the police according to the battery-driven car vibration signal of collection or the state of deploying troops on garrison duty automatically of movable signal and battery-driven car.

2. battery-driven car safety theftproof device according to claim 1; It is characterized in that: it also comprises battery state of charge sample circuit and storage battery charge control circuit, and said battery state of charge sample circuit connects said Single-chip Controlling unit so that gather battery temp signal, battery tension signal and charging valtage signal; Two switch terminals of said storage battery charge control circuit are serially connected in the charge circuit of said electromobile battery, and the charging control end of said Single-chip Controlling unit connects the charging control end of said storage battery charge control circuit so that judge whether to control the break-make of said storage battery charge control circuit according to battery temp signal, battery tension signal and the charging valtage signal gathered.

3. battery-driven car safety theftproof device according to claim 1 and 2; It is characterized in that: it also comprises the working power module; The power supply input end of said working power module connects the power supply mouth of said electromobile battery, and the power supply mouth of said working power module connects said Single-chip Controlling unit, said RFID communication unit, said battery-driven car sensor assembly and said battery state of charge sample circuit respectively to provide work required power line voltage; The power supply mouth of said electromobile battery connects said warning circuit, said storage battery power supply control circuit and said storage battery charge control circuit respectively to provide work required power line voltage.

4. battery-driven car safety theftproof device according to claim 1 and 2; It is characterized in that: said storage battery power supply control circuit and said storage battery charge control circuit are same ON-OFF control circuits; Said ON-OFF control circuit comprises relay J S1, FET Q2 and plate J1; The grid of said FET Q2 connects an end of resistance R 11, and the other end of said resistance R 11 is as the control end of said ON-OFF control circuit, and the grid of said FET Q2 connects an end of resistance R 12; The other end ground connection of said resistance R 12; The source ground of said FET Q2, the drain electrode of said FET Q2 connect an end of said relay J S1 coil, and the other end of said relay J S1 coil is used to connect the power input of said ON-OFF control circuit; The anode of discharge diode D4 connects an end of said relay J S1 coil, and the negative electrode of said discharge diode D4 connects the other end of said relay J S1 coil; First interface of said plate J1 and the 4th interface are connected respectively to the two ends of the pair of contact of said relay J S1; Second interface of said plate J1 and the 3rd interface ground connection; First interface of said plate J1 and second interface be used to be connected charger charging output interface or electric vehicle motor use electrical interface, the 3rd interface of said plate J1 and the 4th interface are used to be connected the power supply mouth of said electromobile battery.

5. battery-driven car safety theftproof device according to claim 4; It is characterized in that: said ON-OFF control circuit also includes auxiliary charging circuit; Said auxiliary charging circuit comprises resistance R 13 and diode D5; First interface of the said plate J1 of one termination of said resistance R 13, the anode of the said diode D5 of another termination of said resistance R 13, the negative electrode of said diode D5 connects the 4th interface of said plate J1.