CN109050399A - The safety prompting system of pure electric automobile - Google Patents
The safety prompting system of pure electric automobile Download PDFInfo
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- CN109050399A CN109050399A CN201811163169.3A CN201811163169A CN109050399A CN 109050399 A CN109050399 A CN 109050399A CN 201811163169 A CN201811163169 A CN 201811163169A CN 109050399 A CN109050399 A CN 109050399A
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- resistance
- relay
- sounding
- electrically connected
- switch
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- 238000004891 communication Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 239000003990 capacitor Substances 0.000 description 67
- 239000004065 semiconductor Substances 0.000 description 19
- 238000001514 detection method Methods 0.000 description 12
- 230000005611 electricity Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 101100532687 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) IRR1 gene Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of safety prompting system of pure electric automobile, including body shell, entire car controller, sounding device and seating pressure device, and entire car controller, sounding device and seating pressure device are respectively arranged on body shell；Sounding device includes sounding relay, relay switch and acoustical generator, and sounding relay, relay switch and acoustical generator are respectively arranged on body shell, and one end of sounding relay is electrically connected with one end of entire car controller, the other end ground connection of sounding relay.The present invention may determine that whether driver leaves driver's seat, and the case where can carry out alarm operation, avoid the occurrence of automobile automatic running, avoid the occurrence of safety accident；Also, it can also judge that electric car is in the state of can travel, driver, which leaves vehicle, can prompt driver to close car key power supply, reduce safety accident；The safety to automobile is improved, the reliability to automobile monitoring is also improved, reduces and dangerous probability occurs.
Description
Technical field
The present invention relates to electric car fields, more particularly to a kind of safety prompting system of pure electric automobile.
Background technique
As the orthodox car of one, tier 2 cities is gradually saturated, the regional cities such as three, four lines and the vast combination area of city and country by
Step becomes new market.Passenger car is just gradually universal to three, four line cities, and vast town and country bond area, with life water
Perfect, the demand increase to convenient traffic of flat raising and road traffic condition.The price of current low-speed electronic vehicle is lower (logical
Often at 30,000~50,000 yuan), course continuation mileage meets the needs of basic (usually 50~80km), acquisition cost and later maintenance cost
It is significant to be lower than orthodox car.Currently, the low-speed electronic vehicle in most of province does not have to register the license, is not necessarily to driving license, to older
There is the people of purchase vehicle demand to save the time for being largely admitted to driving license again, there is very big convenience.Research department thinks low speed electricity
Motor-car has a vast market development prospect.
However, vehicle is also without acoustic safety when existing driver leaves the pure electric automobile in the state of can travel
Prompt, if electric car is in the state of can travel, and driver has left seat, it is likely that automobile automatic running occurs
The case where, when serious, it is also possible to safety accident occur；Meanwhile whether existing electric car can not also judge electric car
In travelable state, to reduce the safety to automobile, the reliability to automobile monitoring is also reduced, appearance is increased
Dangerous probability.
Summary of the invention
The purpose of the present invention is overcoming shortcoming in the prior art, a kind of safety instruction system of pure electric automobile is provided
System, it can be determined that whether driver leaves driver's seat, and can carry out alarm operation, avoids the occurrence of the feelings of automobile automatic running
Condition avoids the occurrence of safety accident；Also, it can also judge that electric car is in the state of can travel, driver leaves vehicle and can mention
Show that driver closes car key power supply, reduces safety accident；The safety to automobile is improved, is also improved to automobile monitoring
Reliability reduces and dangerous probability occurs.
The purpose of the present invention is achieved through the following technical solutions:
A kind of safety prompting system of pure electric automobile, comprising: body shell, entire car controller, sounding device and seat
Pressure apparatus, the entire car controller, the sounding device and the seating pressure device are respectively arranged at the body shell
On；
Ignition switch is provided on the body shell, the entire car controller is electrically connected with the ignition switch；
The sounding device includes sounding relay, relay switch and acoustical generator, the sounding relay, the relay
Device switch and the acoustical generator are respectively arranged on the body shell, one end of the sounding relay and the full-vehicle control
One end of device is electrically connected, the other end ground connection of the sounding relay, also, the sounding relay and the relay switch
Control terminal connection, one end of the relay switch is electrically connected with the ignition switch, the other end of the relay switch
It is electrically connected with the first end of the acoustical generator, the second end ground connection of the acoustical generator；
The seating pressure device includes seat, pressure sensor and pressure switch, and the seat is set to the vehicle body
On ontology, the pressure sensor is set on the seat, also, the control of the pressure sensor and the pressure switch
End connection, one end of the pressure switch are electrically connected with the entire car controller, the other end ground connection of the pressure switch.
The ignition switch is ON gear switch in one of the embodiments,.
The voltage of the ON gear switch input is+12V in one of the embodiments,.
The sounding relay and the relay switch are an integral structure in one of the embodiments,.
It in one of the embodiments, further include electric machine controller, the electric machine controller is set to the body shell
On, also, the electric machine controller and entire car controller electrical connection.
The entire car controller is electrically connected by CAN communication line with the electric machine controller in one of the embodiments,.
In one of the embodiments, further include driving motor, the driving motor respectively with the electric machine controller and
The entire car controller electrical connection.
The driving motor is electrically connected by CAN bus with the entire car controller in one of the embodiments,.
The acoustical generator is buzzer in one of the embodiments,.
The acoustical generator is loudspeaker in one of the embodiments,.
The present invention compared with the prior art the advantages of and have the beneficial effect that:
The present invention is a kind of safety prompting system of pure electric automobile, passes through setting entire car controller, sounding device and seat
Chair pressure apparatus, it can be determined that whether driver leaves driver's seat, and can carry out alarm operation, and it is automatic to avoid the occurrence of automobile
The case where traveling, avoids the occurrence of safety accident；Also, it can also judge that electric car is in the state of can travel, driver leaves
Vehicle can prompt driver to close car key power supply, reduce safety accident；The safety to automobile is improved, is also improved to vapour
The reliability of vehicle monitoring, reduces and dangerous probability occurs.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of the safety prompting system of the pure electric automobile of an embodiment of the present invention；
Fig. 2 is the circuit diagram of power conversion circuit shown in FIG. 1；
Fig. 3 is the circuit diagram of overvoltage crowbar shown in FIG. 1；
Fig. 4 is the circuit diagram of over-current detection circuit shown in FIG. 1；
Fig. 5 is the circuit diagram of DC/DC converter circuit shown in FIG. 1.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Referring to Fig. 1, a kind of safety prompting system of pure electric automobile, comprising: body shell, entire car controller 100, hair
Acoustic device 200 and seating pressure device 300, the entire car controller 100, the sounding device 200 and seating pressure dress
300 are set to be respectively arranged on the body shell.It should be noted that body shell is the structure of automobile；The full-vehicle control
Device 100 is used to control the work of entire safety prompting system；The sounding device 200 is used to issue the sound of prompt；The seat
Whether chair pressure apparatus 300 is used to incude driver's seating on the seat of automobile, and then reminds whether entire car controller needs
Issue the sound of prompt.
Referring to Fig. 1, ignition switch is provided on the body shell, the entire car controller and ignition switch electricity
Connection.In the present embodiment, the ignition switch is ON gear switch.Also, the voltage of the ON gear switch input is+12V.
Referring to Fig. 1, the sounding device 200 includes sounding relay 210, relay switch 220 and acoustical generator 230,
The sounding relay, the relay switch and the acoustical generator are respectively arranged on the body shell, the sounding after
One end of electric appliance is electrically connected with one end of the entire car controller, the other end ground connection of the sounding relay, also, the hair
Electroacoustic relay is connect with the control terminal of the relay switch, and one end of the relay switch is electrically connected with the ignition switch
It connects, the other end of the relay switch is electrically connected with the first end of the acoustical generator, the second end ground connection of the acoustical generator.It needs
It is noted that the sounding relay 210 is for connecting entire car controller, the relay switch 220 is for controlling sounding
The work of device, the acoustical generator 230, with the vehicle condition for reminding driver current, avoid occurring for issuing safety instruction sound
Safety accident.
Referring to Fig. 1, the seating pressure device 300 includes seat, pressure sensor 310 and pressure switch 320, it is described
Seat is set on the body shell, and the pressure sensor is set on the seat, also, the pressure sensor with
The control terminal of the pressure switch connects, and one end of the pressure switch is electrically connected with the entire car controller, and the pressure is opened
The other end of pass is grounded.It should be noted that the seat is for taking driver, the pressure sensor 310 is for incuding
Whether driver seating is had on seat, and the pressure switch 320 controls vehicle for receiving the signal from pressure sensor
Whether controller needs to issue safety instruction operation.
It should also be noted that, the pressure sensor 310 can use the model PT124G system of ZHYQ scientific & technical corporation
The pressure sensor of column, certainly, other can satisfy the technical solution of the application and be that those skilled in the art can be free
The pressure sensor of selection, within the scope of protection of this application.It should also be noted that, the pressure sensor is on the market
The pressure sensor for the conventional prior art often sold, the application only require the protection pressure sensor and the seat and institute
The structural relation, connection relationship and positional relationship for stating pressure switch, particularly with regard to the pressure sensor and the seat and institute
State pressure switch cooperation working principle refer to the prior art realize, wherein it is that may be present containing methodical technical characteristic not
It is claimed object, is not repeating herein.
So, it can be determined that whether driver leaves driver's seat, and can carry out alarm operation, avoids the occurrence of automobile certainly
The case where dynamic traveling, avoid the occurrence of safety accident；Also, can also judge electric car be in can travel state, driver from
Driving can prompt driver to close car key power supply, reduce safety accident；Safety to automobile is improved, is also improved pair
The reliability of automobile monitoring, reduces and dangerous probability occurs.
It should be noted that the sounding relay and the relay switch are an integral structure.The acoustical generator is
Buzzer.Preferably, the acoustical generator is loudspeaker.In this way, the validity of the sounding of generator can be improved, that improves system can
By property.
It should be noted that the safety prompting system further includes electric machine controller, the electric machine controller is set to institute
It states on body shell, also, the electric machine controller and entire car controller electrical connection.The entire car controller passes through CAN
Connection is electrically connected with the electric machine controller.
It should be noted that the safety prompting system further includes driving motor, the driving motor respectively with the electricity
Machine controller and entire car controller electrical connection.The driving motor is electrically connected by CAN bus with the entire car controller.
When work: electric car key reaches ON grades, and entire car controller VCU, which obtains electric machine controller by CAN communication, is
No to can travel state in READY, it is occupied whether pressure sensor detection seat has, if not having, pressure sensor control
Pressing pressure closes the switch, so that the B-3L pin of entire car controller triggers useful signal, and then the B-2F pin of entire car controller
High level is exported by conducting wire, control sounding relay conducting finally, controls buzzer so that relay switch is closed
It makes a sound, prompts driver.
Vehicle control unit of electric vehicle VCU detects driving motor by CAN bus and is in " READY " travelable state, leads to
It crosses and judges whether driver leaves driver's seat alarm；Judge that electric car is in the state of can travel by this system, works as driving
Member, which leaves vehicle, can prompt driver to close car key power supply, reduce the generation of safety accident.
It is appreciated that need to realize entire car controller protection work when electric car is in carrying out charging process, so that
Obtaining electric car can normally charge, to improve stability and reliability to electric car；Therefore, in order to guarantee electronic vapour
Vehicle can normally charge, and improve stability and reliability to electric car；For example, in one embodiment, the safety
Prompt system further includes charge protection device, and the charge protection device includes power conversion circuit, overvoltage crowbar, overcurrent
Detection circuit and DC/DC converter circuit, the input terminal of the power conversion circuit is used for the charging mechatronics with outside, described
The output end of power conversion circuit is electrically connected with the overvoltage crowbar, the over-current detection circuit and the DC/DC converter circuit
It connects, the output end of the overvoltage crowbar, the over-current detection circuit and the DC/DC converter circuit and the full-vehicle control
Device electrical connection；The power conversion circuit includes resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance
R9, resistance R10, capacitor C2, capacitor C3, capacitor C4, capacitor C5, diode D1, diode D2, zener diode ZD1, metal-oxide-semiconductor
Q1, inductance L2 and control chip IC 1, the first end of the resistance R3 are used to connect external charger, and the of the resistance R3
Two ends are grounded after the resistance R4, the diode D2, the capacitor C3, the resistance R5, the both ends point of the capacitor C2
Both ends not with the resistance R3 are connected in parallel, and the both ends of the diode D1 and the both ends of the resistance R4 are connected in parallel, institute
The both ends for stating inductance L2 are electrically connected with the anode of the first end of the resistance R3 and the diode D2 respectively；The metal-oxide-semiconductor Q1
The pole D be electrically connected with the anode of the diode D2, the pole S of the metal-oxide-semiconductor Q1 is grounded after the resistance R8, the metal-oxide-semiconductor
The pole G of Q1 is electrically connected with one end of the resistance R6, capacitor C4, zener diode ZD1, resistance R7 respectively, the resistance R6's
The other end is electrically connected with a pin of the control chip IC 1, the other end of the capacitor C4, the zener diode ZD1
The other end, the resistance R7 the other end be grounded；The pin electricity of the first end of the resistance R9 and the control chip IC 1
Connection, the second end of the resistance R9 are electrically connected with the pole S of the metal-oxide-semiconductor Q1, one end of the capacitor C5 and the resistance R9
First end electrical connection, the other end ground connection of the capacitor C5, the first end electricity of one end of the resistance R10 and the resistance R9
Connection, the other end ground connection of the resistance R10；The overvoltage crowbar includes resistance R21, resistance R11, resistance R12, resistance
R13, resistance R14, capacitor C6, zener diode ZD2, photoelectrical coupler OT1 and triode Q2, the first end of the resistance R21
It is electrically connected with the base stage of the triode Q2, the second end of the resistance R21 and the emitter of the photoelectrical coupler OT1 are electrically connected
It connects, the emitter ground connection of the triode Q2, the collector of the triode Q2 is electrically connected with the control chip IC 1, described
One end of capacitor C6 is electrically connected with the first end of the resistance R21, the other end ground connection of the capacitor C6, the resistance R11's
One end is electrically connected with the emitter of the photoelectrical coupler OT1, the other end ground connection of the resistance R11, and the one of the resistance R12
End is electrically connected with the collector of the photoelectrical coupler OT1, and the other end of the resistance R12 is used for external reference voltage VREF,
The cathode of the zener diode ZD2 is used to connect external charger, and the anode of the zener diode ZD2 is through the resistance
It is grounded after R13, the resistance R14, the both ends of the light emitting diode of the photoelectrical coupler OT1 are respectively with the resistance R13's
Both ends are connected in parallel；The over-current detection circuit includes diode D3, diode D4, transformer T1, inductance L3, zener diode
ZD3, resistance R15, resistance R16, resistance R17, capacitor C7, capacitor C8 and triode Q3, the anode of the diode D3 with it is described
Charge mechatronics, and the cathode of the diode D3 is electrically connected with one end of the transformer T1 primary coil, the transformer
The other end of T1 output voltage after the inductance L3, the first end of the resistance R15 and the transformer T1 secondary coil
One end electrical connection, the second end of the resistance R15 are electrically connected with the other end of the transformer T1 secondary coil, the resistance
The second end of R15 is electrically connected after the diode D4, the diode ZD3 with the base stage of the triode Q3, the resistance
One end of R16 is electrically connected with the cathode of the diode D4, the other end ground connection of the resistance R16, one end of the capacitor C7
It is electrically connected with the cathode of the diode D4, the other end ground connection of the capacitor C7, one end of the resistance R17 and two pole
The anode of pipe ZD3 is electrically connected, the other end ground connection of the capacitor C7, the output end of one end of the capacitor C8 and the inductance L3
Electrical connection, the emitter ground connection of the triode Q3, the collector of the triode Q3 are electrically connected with the entire car controller；Institute
Stating DC/DC converter circuit includes capacitor C9, capacitor C10, capacitor C11, capacitor C12, inductance L4, resistance R18, resistance R19, resistance
R20, triode Q4, diode D5 and control chip IC 2, one end of the capacitor C9 after the resistance R18 with the control
One pin of chip IC 2 is electrically connected, and the other end ground connection of the capacitor C9, one end and the charger of the inductance L4 is electrically connected
It connects, the other end of the inductance L4 is electrically connected with the control chip IC 2, one end of the capacitor C10 and the control chip
A pin of IC2 is electrically connected, the other end ground connection of the capacitor C10, the 5th pin of the control chip IC 2 respectively with it is described
Resistance R19, the resistance R20 electrical connection, the resistance R20 the other end ground connection, the other end of the resistance R19 respectively with institute
State one end electrical connection of the collector and the capacitor C11 of triode Q4, the other end ground connection of the capacitor C11, two pole
The anode of pipe D5 with it is described control chip IC 2 the 1st pin be electrically connected, the cathode of the diode D5 with it is described respectively with it is described
The electrical connection of one end of the emitter of triode Q4 and the capacitor C12, the other end ground connection of the capacitor C12, the triode
The base stage of Q4 is electrically connected with the entire car controller.So, it is ensured that electric car can normally charge, and improve to electronic
The stability and reliability of automobile.
In order to further explain charge protection device, more to understand the technology of charge protection device.For example, described
Charge protection device includes power conversion circuit, overvoltage crowbar, over-current detection circuit and DC/DC converter circuit, the power
The input terminal of translation circuit is used to protect with external charging mechatronics, the output end of the power conversion circuit and the over-voltage
Protection circuit, the over-current detection circuit and DC/DC converter circuit electrical connection, the overvoltage crowbar, the over-current detection
Circuit and the output end of the DC/DC converter circuit are electrically connected with the entire car controller.It should be noted that the power becomes
The size of the voltage of circuit transformations output is changed, the overvoltage crowbar is described for preventing high voltage from damaging entire car controller
Over-current detection circuit is used for the electric current of detection output, if it is excessive electric current occur, starting protection program, and issue alarm signal
Number, the DC/DC converter circuit is for providing stable voltage for entire car controller.
Specifically, referring to Fig. 2, the power conversion circuit includes resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, capacitor C2, capacitor C3, capacitor C4, capacitor C5, diode D1, diode D2, pressure stabilizing two
Pole pipe ZD1, metal-oxide-semiconductor Q1, inductance L2 and control chip IC 1, the first end of the resistance R3 are used to connect external charger, institute
The second end for stating resistance R3 is grounded after the resistance R4, the diode D2, the capacitor C3, the resistance R5, the electricity
Hold both ends of the both ends of C2 respectively with the resistance R3 to be connected in parallel, the both ends at the both ends of the diode D1 and the resistance R4
It is connected in parallel, the both ends of the inductance L2 are electrically connected with the anode of the first end of the resistance R3 and the diode D2 respectively；
The pole D of the metal-oxide-semiconductor Q1 is electrically connected with the anode of the diode D2, and the pole S of the metal-oxide-semiconductor Q1 is followed by through the resistance R8
Ground, the pole G of the metal-oxide-semiconductor Q1 are electrically connected with one end of the resistance R6, capacitor C4, zener diode ZD1, resistance R7 respectively,
The other end of the resistance R6 is electrically connected with a pin of the control chip IC 1, the other end of the capacitor C4, the pressure stabilizing
The other end of diode ZD1, the resistance R7 the other end be grounded；The first end of the resistance R9 and the control chip
A pin of IC1 is electrically connected, and the second end of the resistance R9 is electrically connected with the pole S of the metal-oxide-semiconductor Q1, one end of the capacitor C5
It is electrically connected with the first end of the resistance R9, the other end ground connection of the capacitor C5, one end of the resistance R10 and the resistance
The first end of R9 is electrically connected, the other end ground connection of the resistance R10.
Working principle: resistance R9, capacitor C2, resistance R10, resistance R5, capacitor C3, diode D1, diode D2 composition are slow
Device is rushed, and switchs metal-oxide-semiconductor Q1 and connects, makes to switch the reduction of metal-oxide-semiconductor Q1 voltage stress, EMI is reduced, and second breakdown does not occur.From electricity
The current peak signal that resistance R8 is measured participates in the duty ratio control of work at present cycle, therefore is the electric current limit of work at present cycle
System.When the voltage on resistance R10 reaches 1V, UC3842 stops working, and switch metal-oxide-semiconductor Q1 is immediately turned off, resistance R6 and switch
Junction capacity CGS, CGD in metal-oxide-semiconductor Q1 forms RC network together, and the charge and discharge of capacitor directly affect the switch speed of switching tube
Degree.Resistance R6 is too small, easily causes to vibrate, and electromagnetic interference also can be very big；Resistance R6 is excessive, can reduce the switching speed of switching tube.
The GS voltage for switching metal-oxide-semiconductor Q1 is usually limited in 18V hereinafter, to protect switch metal-oxide-semiconductor Q1 by zener diode ZD1.It opens
The grid controlled voltage for closing metal-oxide-semiconductor Q1 is saw-shaped wave, and when its duty ratio is bigger, switch metal-oxide-semiconductor Q1 turn-on time is longer, transformation
Energy stored by device is also more；When switching metal-oxide-semiconductor Q1 cut-off, transformer passes through diode D1, diode D2, resistance
R10, resistance R9, capacitor C2 release energy, while also having achieved the purpose that magnetic field resets, and are the storage next time of transformer, pass
Energy is passed to get ready.IC adjusts the size of 6. foot saw-shaped wave duty ratio according to output voltage and electric current moment, thus surely
The output electric current and voltage of complete machine are determined.Capacitor C3 and resistance R5 is peak voltage absorption circuit.In this way, voltage may be implemented
Transformation.
Specifically, referring to Fig. 3, the overvoltage crowbar include resistance R21, resistance R11, resistance R12, resistance R13,
Resistance R14, capacitor C6, zener diode ZD2, photoelectrical coupler OT1 and triode Q2, the first end of the resistance R21 and institute
The base stage electrical connection of triode Q2 is stated, the second end of the resistance R21 is electrically connected with the emitter of the photoelectrical coupler OT1,
The emitter of the triode Q2 is grounded, and the collector of the triode Q2 is electrically connected with the control chip IC 1, the capacitor
One end of C6 is electrically connected with the first end of the resistance R21, the other end ground connection of the capacitor C6, one end of the resistance R11
Be electrically connected with the emitter of the photoelectrical coupler OT1, the other end of resistance R11 ground connection, one end of the resistance R12 with
The collector of the photoelectrical coupler OT1 is electrically connected, and the other end of the resistance R12 is used for external reference voltage VREF, described
The cathode of zener diode ZD2 is used to connect external charger, the anode of the zener diode ZD2 through the resistance R13,
It is grounded after the resistance R14, the both ends of the light emitting diode of photoelectrical coupler OT1 both ends with the resistance R13 respectively
It is connected in parallel.
Working principle: when Uo has over-voltage phenomenon, voltage-stabiliser tube breakdown conducting is generated through optocoupler (OT1), resistance R14 to ground
Electric current flows through, the lumination of light emitting diode of photoelectrical coupler, so that the phototriode of photoelectrical coupler be made to be connected.Triode Q2
Base stage must conduct, 3 foot electricity of control chip IC 1 reduce, close IC1, stop the work of entire power supply, Uo zero, week
And it renews.
Specifically, referring to Fig. 4, the over-current detection circuit includes diode D3, diode D4, transformer T1, inductance
L3, zener diode ZD3, resistance R15, resistance R16, resistance R17, capacitor C7, capacitor C8 and triode Q3, the diode D3
Anode and the charging mechatronics, the cathode of the diode D3 and one end of the transformer T1 primary coil are electrically connected
It connects, the other end of transformer T1 output voltage after the inductance L3, the first end of the resistance R15 and the transformer
One end of T1 secondary coil is electrically connected, and the second end of the resistance R15 and the other end of the transformer T1 secondary coil are electrically connected
It connects, the second end of the resistance R15 is electrically connected after the diode D4, the diode ZD3 with the base stage of the triode Q3
It connects, one end of the resistance R16 is electrically connected with the cathode of the diode D4, the other end ground connection of the resistance R16, the electricity
The one end for holding C7 is electrically connected with the cathode of the diode D4, the other end ground connection of the capacitor C7, one end of the resistance R17
It is electrically connected with the anode of the diode ZD3, the other end ground connection of the capacitor C7, one end of the capacitor C8 and the inductance
The output end of L3 is electrically connected, the emitter ground connection of the triode Q3, the collector and the full-vehicle control of the triode Q3
Device electrical connection.
Working principle: transformer T1 is used to detect load current IL, therefore resistance R15 has proportional voltage and generates.
Diode D4 be rectifier diode, resistance R17 and capacitor C7 rectification after filter circuit, if current overload occur, capacitor C7
On voltage will increase the conducting voltage of zener diode ZD3, at this point, triode Q3 can be connected, therefore triode Q3 current collection
Signal on extremely can close the driving signal of voltage-stablizer.
It is to be noted that the design of transformer T1, the annular core of selection make pottery ferromagnetic and MPP of material, but iron
Core cannot work in saturation state.Enclose the design of number: primary circle number generally selects a circle, the voltage of the right secondary of selection of number of secondary turns
It is determined, NP/NS=IS/IP.Due to IR=VS/R1, in maximum given load electric current IC, number of secondary turns is necessary
Desired voltage value can be generated on the capacitor cl, so NS=NP*IRR1/ (Vs+Vd3).So far my door can coiling
One accurate transformer, and must slightly adjust on circle number on actual circuit test, to accomplish optimal property
Energy.
Specifically, referring to Fig. 5, the DC/DC converter circuit include capacitor C9, capacitor C10, capacitor C11, capacitor C12,
Inductance L4, resistance R18, resistance R19, resistance R20, triode Q4, diode D5 and control chip IC 2, the one of the capacitor C9
It holds and is electrically connected after the resistance R18 with a pin of the control chip IC 2, the other end ground connection of the capacitor C9 is described
One end of inductance L4 and the charging mechatronics, the other end of the inductance L4 is electrically connected with the control chip IC 2, described
One end of capacitor C10 is electrically connected with a pin of the control chip IC 2, the other end ground connection of the capacitor C10, the control
5th pin of chip IC 2 is electrically connected with the resistance R19, the resistance R20 respectively, the other end ground connection of the resistance R20,
The other end of the resistance R19 is electrically connected with one end of the collector of the triode Q4 and the capacitor C11 respectively, the electricity
Hold the other end ground connection of C11, the anode of the diode D5 is electrically connected with the 1st pin of the control chip IC 2, two pole
The cathode of pipe D5 is electrically connected with one end of the emitter of the triode Q4 and the capacitor C12 respectively with described, the capacitor
The other end of C12 is grounded, and the base stage of the triode Q4 is electrically connected with the entire car controller.
Working principle: when non-loaded, 6 feet of control chip IC 2 stop working without electricity, input terminal 3.65V operating current
Only 18uA.(triode Q4 has Ieb electric current) when loaded, the pole the EC conducting of triode Q4, control chip IC 2 obtain electrician
Make.Whether it is by having load to determine that whether control chip IC 2 works, and just a suitable battery, does voltage with control chip IC 2
High conversion efficiency, output are stablized.So, it is ensured that electric car can normally charge, and improve the stabilization to electric car
Property and reliability.
The present invention compared with the prior art the advantages of and have the beneficial effect that:
The present invention is a kind of safety prompting system of pure electric automobile, passes through setting entire car controller, sounding device and seat
Chair pressure apparatus, it can be determined that whether driver leaves driver's seat, and can carry out alarm operation, and it is automatic to avoid the occurrence of automobile
The case where traveling, avoids the occurrence of safety accident；Also, it can also judge that electric car is in the state of can travel, driver leaves
Vehicle can prompt driver to close car key power supply, reduce safety accident；The safety to automobile is improved, is also improved to vapour
The reliability of vehicle monitoring, reduces and dangerous probability occurs.
Only several embodiments of the present invention are expressed for embodiment described above, and the description thereof is more specific and detailed, but
It cannot be construed as a limitation to the scope of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to of the invention
Protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of safety prompting system of pure electric automobile characterized by comprising body shell, entire car controller, sounding dress
It sets and seating pressure device, the entire car controller, the sounding device and the seating pressure device is respectively arranged at described
On body shell；
Ignition switch is provided on the body shell, the entire car controller is electrically connected with the ignition switch；
The sounding device includes sounding relay, relay switch and acoustical generator, and the sounding relay, the relay are opened
It closes and the acoustical generator is respectively arranged on the body shell, one end and the entire car controller of the sounding relay
One end electrical connection, the other end ground connection of the sounding relay, also, the control of the sounding relay and the relay switch
End connection processed, one end of the relay switch are electrically connected with the ignition switch, the other end of the relay switch and institute
State the first end electrical connection of acoustical generator, the second end ground connection of the acoustical generator；
The seating pressure device includes seat, pressure sensor and pressure switch, and the seat is set to the body shell
On, the pressure sensor is set on the seat, also, the control terminal of the pressure sensor and the pressure switch connects
It connects, one end of the pressure switch is electrically connected with the entire car controller, the other end ground connection of the pressure switch.
2. the safety prompting system of pure electric automobile according to claim 1, which is characterized in that the ignition switch is ON
Gear switch.
3. the safety prompting system of pure electric automobile according to claim 2, which is characterized in that the ON gear switch input
Voltage be+12V.
4. the safety prompting system of pure electric automobile according to claim 1, which is characterized in that the sounding relay and
The relay switch is an integral structure.
5. the safety prompting system of pure electric automobile according to claim 1, which is characterized in that further include motor control
Device, the electric machine controller are set on the body shell, also, the electric machine controller and the entire car controller are electrically connected
It connects.
6. the safety prompting system of pure electric automobile according to claim 5, which is characterized in that the entire car controller is logical
CAN communication line is crossed to be electrically connected with the electric machine controller.
7. the safety prompting system of pure electric automobile according to claim 5, which is characterized in that it further include driving motor,
The driving motor is electrically connected with the electric machine controller and the entire car controller respectively.
8. the safety prompting system of pure electric automobile according to claim 7, which is characterized in that the driving motor passes through
CAN bus is electrically connected with the entire car controller.
9. the safety prompting system of pure electric automobile according to claim 1, which is characterized in that the acoustical generator is buzzing
Device.
10. the safety prompting system of pure electric automobile according to claim 1, which is characterized in that the acoustical generator is loudspeaker
?.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163169.3A CN109050399A (en) | 2018-09-30 | 2018-09-30 | The safety prompting system of pure electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163169.3A CN109050399A (en) | 2018-09-30 | 2018-09-30 | The safety prompting system of pure electric automobile |
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| CN109050399A true CN109050399A (en) | 2018-12-21 |
Family
ID=64767511
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811163169.3A Pending CN109050399A (en) | 2018-09-30 | 2018-09-30 | The safety prompting system of pure electric automobile |
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| CN110733386A (en) * | 2019-10-11 | 2020-01-31 | 江苏科技大学 | lifting type riding mower vibration reduction seat |
| CN113790105A (en) * | 2021-02-20 | 2021-12-14 | 柳州铁道职业技术学院 | System and method for shutting down idling start-stop function of engine through windscreen wiper gear |
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