CN104166059A - Function test device for electrical part of electric vehicle - Google Patents
Function test device for electrical part of electric vehicle Download PDFInfo
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- CN104166059A CN104166059A CN201410399762.3A CN201410399762A CN104166059A CN 104166059 A CN104166059 A CN 104166059A CN 201410399762 A CN201410399762 A CN 201410399762A CN 104166059 A CN104166059 A CN 104166059A
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Abstract
The invention provides a function test device for an electrical part of an electric vehicle. The function test device comprises an overcurrent protection module and a display module used for displaying the function of the electrical part of the electric vehicle. According to the function test device for the electrical part of the electric vehicle, a test result of the electrical part of the electric vehicle can be visually and legibly displayed, fault reasons can be accurately reflected, test efficiency is greatly improved, time is saved, the part can be effectively protected, and safety accidents are avoided.
Description
Technical field
The present invention relates to electric automobile field, relate in particular to a kind of electric automobile electric components FCS functional check-out set.
Background technology
Electric automobile is before production or before exploitation entrucking, all need to carry out through testing table functional test or the logical checking of the electric components of car load, functional test or logical checking are positioned over the wire harness of parts (comprising high-voltage wiring harness and low voltage wiring harness) on testing table according to the schematic diagram of the electric components of car load, then each electric components is linked in the respective socket in wire harness, the errorless laggard electricity that works of wiring, whether the electric components with check electric automobile meets design function or design logic requirement, the fault that whether has functional or logicality.
But in actual testing process, actual reason functional or that logicality fault causes has a lot, not input of voltage such as check, whether the polarity of the check voltage of access is correct, on branch's socket of the wire harness of each electric components or plug, whether there is the input of the voltage of detection, even should there is not safety problem etc. after whether the input of each electric components is short-circuited and the input of electric components is short-circuited, after above-mentioned problem occurs, traditional method is by test instrumentations such as multimeters, the wire harness circuit of electric components to be checked repeatedly, but this mode inefficiency, length consuming time, often after being short-circuited, electric components can cause fault coverage to expand, even cause security incident.
Therefore; a kind of verifying attachment of the electric components for electric automobile must be proposed; can carry out simple and clear demonstration to the electric components of the electric automobile result of testing; and accurate faults reason; greatly improve checkability; save time, and can effectively protect parts, prevent the generation of security incident.
Summary of the invention
In view of this; the object of this invention is to provide a kind of electric automobile electric components FCS functional check-out set; can carry out simple and clear demonstration to the electric components of the electric automobile result of testing; and accurate faults reason; greatly improve checkability; save time, and can effectively protect parts, prevent the generation of security incident.
A kind of electric automobile electric components FCS functional check-out set provided by the invention, comprises overcurrent protection module and for showing the display module of the electric components function of electric motor car;
Described overcurrent protection module comprises AC/DC conversion voltage regulation unit and overcurrent identification protecting unit, the input end of described AC/DC conversion voltage regulation unit is electrically connected to city, the output terminal of AC/DC conversion voltage regulation unit is connected with overcurrent identification protecting unit, the input end of described overcurrent identification protecting unit is also connected with the positive pole of high tension battery, and the output terminal of described overcurrent identification protecting unit is connected with the input end of display module and electric components;
Described display module comprises that at least one group for showing that the high pressure display unit of high-voltage electrical apparatus parts function and at least one group are for showing the low pressure display unit of low-voltage electrical parts function; the input end of described high pressure display unit is connected with the output terminal of overcurrent identification protecting unit with the input end of high-voltage electrical apparatus parts, and the input end of described low pressure display unit is connected with the input end of low-voltage electrical parts.
Further, described high pressure display unit comprises current-limiting resistance, the first light emitting diode and the second light emitting diode, one end of described current-limiting resistance is as the input end of display unit, the other end is connected with the positive pole of the first light emitting diode, the minus earth of the first light emitting diode, the negative pole of described the second light emitting diode is connected with the points of common connection of the first light emitting diode and current-limiting resistance, the plus earth of the second light emitting diode, described low pressure display unit is identical with the circuit structure of high pressure display unit.
Further, described AC/DC conversion voltage regulation unit comprises K switch 1, fuse F1, transformer T1, diode D1, diode D2, diode D3, diode D4, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, voltage stabilizer V1 and voltage stabilizer V2;
One end of described K switch 1 is connected with the live wire of civil power, the other end is connected with one end of the primary coil of transformer T1 by fuse F1, the other end of the primary coil of transformer T1 is connected with the zero line of civil power, the positive output end of the secondary coil of described transformer T1 is connected with the negative pole of diode D3 with the positive pole of diode D1, the negative output terminal of the secondary coil of transformer T1 is connected with the negative pole of diode D4 with the positive pole of diode D2, described diode D1 is connected with the negative pole of diode D2 and the input end of voltage stabilizer, the positive pole of described diode D3 and diode D4 is connected with the input end of voltage stabilizer V2, two secondary coils of described transformer T1 are provided with reference point ground connection, the input end of described voltage stabilizer V1 is by capacitor C 1 ground connection, the output terminal of described voltage stabilizer V1 is by the output terminal output positive voltage of capacitor C 3 ground connection and voltage stabilizer V1, the input end of described voltage stabilizer V2 is by capacitor C 2 ground connection, the output terminal of described voltage stabilizer V2 is by the output terminal output negative voltage of capacitor C 4 ground connection and voltage stabilizer V2.
Further, described overcurrent identification protecting module comprises high-voltage switch gear K2, A.C. contactor J1, DC relay J2, diode D5, diode D6, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, capacitor C 5, DC current sensor V4, amplifier V5 and triode V3;
One end of described high-voltage switch gear K2 is connected with the points of common connection of the primary coil of transformer T1 with fuse F1, the other end of high-voltage switch gear K2 is connected with one end of the coil of A.C. contactor J1, the other end of the coil of A.C. contactor J1 is connected with the output terminal of the normally closed contact of DC relay J2, the input end of the normally closed contact of DC relay J2 is connected with the zero line of civil power, one end of the normally opened contact of described A.C. contactor J1 is connected with the positive pole of high-tension battery, the other end of the normally opened contact of A.C. contactor J1 as output terminal by the Voltage-output of high-tension battery to electric components and high pressure display unit, described DC current sensor V4 is arranged at the output of the normally opened contact of A.C. contactor J1, the positive power source terminal of described DC current sensor V4 is connected with the output terminal of voltage stabilizer V1, and the negative power end of DC current sensor V4 is connected with the output terminal of voltage stabilizer V2, the output terminal of described DC current sensor V4 is connected with the in-phase end of amplifier V5 by resistance R 2, the in-phase end of amplifier V5 is by resistance R 3 ground connection, the end of oppisite phase of amplifier V5 is by resistance R 4 ground connection, the end of oppisite phase of amplifier V5 is connected with the output terminal of voltage stabilizer V1 by resistance R 5, the output terminal of amplifier V5 is connected with the positive pole of diode D6 by resistance R 6, the negative pole of diode D6 is connected with the base stage of triode V3 by resistance R 1, triode V3 grounded emitter, the collector of triode V3 is connected with coil one end of DC relay J2, the other end of the coil of DC relay J2 is connected to the output terminal of voltage stabilizer V1, the collector of triode V3 is also connected with the positive pole of diode D5, the negative pole of diode D5 is connected with the output terminal of voltage stabilizer V1, the negative pole of described diode D6 is by resistance R 7 ground connection, the negative pole of described diode D6 is also by capacitor C 5 ground connection.
Further, described overcurrent protection module also comprises overcurrent display unit, and described overcurrent display unit comprises: resistance R 8, resistance R 9, resistance R 10, triode V6, diode D7, light emitting diode D8, light emitting diode D9 and DC relay J3;
One end of described resistance R 8 is connected with the negative pole of diode D6, the other end is connected with the base stage of triode V6, the grounded emitter of triode V6, the collector of triode V6 is connected with one end of the coil of DC relay J3, the coil other end of DC relay J3 is connected with the output terminal of voltage stabilizer V1, one end of the normally opened contact of described DC relay J3 is connected with the negative pole of diode D6, the other end is connected with the output terminal of voltage stabilizer V1, the collector of described triode V6 is also connected with the positive pole of diode D7, the negative pole of diode D7 is connected with the points of common connection of the output terminal of voltage stabilizer V1 with DC relay J3, the collector of described triode V6 is also connected with the positive pole of light emitting diode D8 by resistance R 10, the minus earth of light emitting diode D8, the negative pole of described light emitting diode D9 is connected with the points of common connection of resistance R 10 with triode V6, the positive pole of light emitting diode D9 is connected with the points of common connection of the output terminal of voltage stabilizer V1 with DC relay J3 by resistance R 9.
Beneficial effect of the present invention: electric automobile electric components FCS functional check-out set provided by the invention; can carry out simple and clear demonstration to the electric components of the electric automobile result of testing; and accurate faults reason; greatly improve checkability; save time; and can effectively protect parts, prevent the generation of security incident.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is catenation principle figure of the present invention.
Fig. 2 is overcurrent protection module schematic block diagram of the present invention.
Fig. 3 is the circuit theory diagrams of overcurrent protection module of the present invention.
Embodiment
Fig. 1 is catenation principle figure of the present invention, Fig. 2 is the schematic block diagram of overcurrent protection module of the present invention, Fig. 3 is the circuit theory diagrams of overcurrent protection module of the present invention, as shown in the figure, a kind of electric automobile electric components FCS functional check-out set provided by the invention, comprises overcurrent protection module and for showing the display module of the electric components function of electric motor car;
Described overcurrent protection module comprises AC/DC conversion voltage regulation unit b1 and overcurrent identification protecting unit b2, the input end of described AC/DC conversion voltage regulation unit b1 is electrically connected to city, the output terminal of AC/DC conversion voltage regulation unit b1 is connected with overcurrent identification protecting unit b2, the input end of described overcurrent identification protecting unit b2 is also connected with the positive pole of high tension battery E1, and the output terminal of described overcurrent identification protecting unit b2 is connected with the input end of display module and electric components;
Described display module comprises that at least one group for showing that the high pressure display unit of high-voltage electrical apparatus parts function and at least one group are for showing the low pressure display unit of low-voltage electrical parts function, the input end of described high pressure display unit is connected with the output terminal of overcurrent identification protecting unit with the input end of high-voltage electrical apparatus parts, and the input end of described low pressure display unit is connected with the input end of low-voltage electrical parts; Electric automobile electric components FCS functional check-out set provided by the invention; can carry out simple and clear demonstration to the electric components of the electric automobile result of testing; and accurate faults reason; greatly improve checkability; save time; and can effectively protect parts, prevent the generation of security incident.
In the present embodiment, described high pressure display unit comprises current-limiting resistance, the first light emitting diode and the second light emitting diode, one end of described current-limiting resistance is as the input end of display unit, the other end is connected with the positive pole of the first light emitting diode, the minus earth of the first light emitting diode (referring to high pressure ground), the negative pole of described the second light emitting diode is connected with the points of common connection of the first light emitting diode and current-limiting resistance, the plus earth of the second light emitting diode (referring to high pressure ground), described low pressure display unit is identical with the circuit structure of high pressure display unit, but each earth terminal of low pressure display unit all connects low pressure ground, as shown in Figure 1, high pressure display unit has six groups, by light emitting diode D22, light emitting diode D23, light emitting diode D24, light emitting diode D25, light emitting diode D26, light emitting diode D27, light emitting diode D28, light emitting diode D29, light emitting diode D30, light emitting diode D31, light emitting diode D32, light emitting diode D33, resistance R 17, resistance R 18, resistance R 19, resistance R 20, resistance R 21 and resistance R 22 form, and as shown in Figure 1, each high pressure display unit is in order to characterize function status and the Logical Status of each corresponding electric components for its concrete connecting circuit, and low pressure display unit comprises equally altogether six groups, by light emitting diode D10, light emitting diode D11, light emitting diode D12, light emitting diode D13, light emitting diode D14, light emitting diode D15, light emitting diode D16, light emitting diode D17, light emitting diode D18, light emitting diode 19, light emitting diode D20, light emitting diode D21, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15 and resistance R 16 form, and the one group of high pressure display unit of take is example: resistance R 17, light emitting diode D22 and light emitting diode D23 form the high pressure display unit of DC converter DC1, (current-limiting resistance of other display units is connected with the electric components corresponding with it in the input end connection that wherein resistance R 17 is current-limiting resistance and one end and DC converter DC1, as shown in Figure 1), the other end is connected with the positive pole of light emitting diode D23, the negative pole of light emitting diode D23 connects high pressure ground, the negative pole of light emitting diode D22 is connected with the points of common connection of resistance R 17 with light emitting diode D23, the positive pole of light emitting diode D22 connects high pressure ground, wherein, light emitting diode D23 is the first light emitting diode, light emitting diode D22 is the second light emitting diode, and the glow color of two light emitting diodes of each group display unit is different, in general, the first light emitting diode green light, the second light emitting diode glows, by green light, represent that assay is normal, glow and represent that assay is abnormal.
In the present embodiment, described AC/DC conversion voltage regulation unit comprises K switch 1, fuse F1, transformer T1, diode D1, diode D2, diode D3, diode D4, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, voltage stabilizer V1 and voltage stabilizer V2;
One end of described K switch 1 is connected with the live wire of civil power, the other end is connected with one end of the primary coil of transformer T1 by fuse F1, the other end of the primary coil of transformer T1 is connected with the zero line of civil power, the positive output end of the secondary coil of described transformer T1 is connected with the negative pole of diode D3 with the positive pole of diode D1, the negative output terminal of the secondary coil of transformer T1 is connected with the negative pole of diode D4 with the positive pole of diode D2, described diode D1 is connected with the negative pole of diode D2 and the input end of voltage stabilizer, the positive pole of described diode D3 and diode D4 is connected with the input end of voltage stabilizer V2, two secondary coils of described transformer T1 are provided with reference point ground connection, the input end of described voltage stabilizer V1 is by capacitor C 1 ground connection, the output terminal of described voltage stabilizer V1 is by the output terminal output positive voltage of capacitor C 3 ground connection and voltage stabilizer V1, the input end of described voltage stabilizer V2 is by capacitor C 2 ground connection, the output terminal of described voltage stabilizer V2 is by the output terminal output negative voltage of capacitor C 4 ground connection and voltage stabilizer V2, the output terminals A 9 output+12V voltages of described voltage stabilizer V1, output terminals A 7 outputs-12V of voltage stabilizer V2, by AC/DC, change the effect of voltage regulation unit, can provide stable working power for other unit of overcurrent protection module, guarantee that this device can move continually and steadily and under the Power Supplies Condition of safety.
In the present embodiment, described overcurrent identification protecting module comprises high-voltage switch gear K2, A.C. contactor J1, DC relay J2, diode D5, diode D6, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, capacitor C 5, DC current sensor V4, amplifier V5 and triode V3; Wherein, V4 is DC current sensor, supply current for detection of accumulator, amplifier V5, resistance R 2, resistance R 3, resistance R 4, resistance R 5 form comparator circuit, for the supply current of accumulator being converted to voltage and comparing with the voltage of setting, and DC relay J2 and A.C. contactor J1 form on-off circuit, for controlling the supply access of accumulator;
One end of described high-voltage switch gear K2 is connected with the points of common connection of the primary coil of transformer T1 with fuse F1, the other end of high-voltage switch gear K2 is connected with one end of the coil of A.C. contactor J1, the other end of the coil of A.C. contactor J1 is connected with the output terminal of the normally closed contact of DC relay J2, the input end of the normally closed contact of DC relay J2 is connected with the zero line of civil power, one end of the normally opened contact of described A.C. contactor J1 is connected with the positive pole of high-tension battery, the other end of the normally opened contact of A.C. contactor J1 as output terminal by the Voltage-output of high-tension battery to electric components and high pressure display unit, described DC current sensor V4 is arranged at the output of the normally opened contact of A.C. contactor J1, the positive power source terminal of described DC current sensor V4 is connected with the output terminal of voltage stabilizer V1, and the negative power end of DC current sensor V4 is connected with the output terminal of voltage stabilizer V2, the output terminal of described DC current sensor V4 is connected with the in-phase end of amplifier V5 by resistance R 2, the in-phase end of amplifier V5 is by resistance R 3 ground connection, the end of oppisite phase of amplifier V5 is by resistance R 4 ground connection, the end of oppisite phase of amplifier V5 is connected with the output terminal of voltage stabilizer V1 by resistance R 5, the output terminal of amplifier V5 is connected with the positive pole of diode D6 by resistance R 6, the negative pole of diode D6 is connected with the base stage of triode V3 by resistance R 1, triode V3 grounded emitter, the collector of triode V3 is connected with coil one end of DC relay J2, the other end of the coil of DC relay J2 is connected to the output terminal of voltage stabilizer V1, the collector of triode V3 is also connected with the positive pole of diode D5, the negative pole of diode D5 is connected with the output terminal of voltage stabilizer V1, the negative pole of described diode D6 is by resistance R 7 ground connection, the negative pole of described diode D6 is also by capacitor C 5 ground connection, by overcurrent identification protecting unit, can under overcurrent condition, to electric components and power supply storage battery, protect, the security incident that can prevent further deteriorations the such as wiring faults of parts and cause.
In the present embodiment, described overcurrent protection module also comprises overcurrent display unit b3, and described overcurrent display unit b3 comprises: resistance R 8, resistance R 9, resistance R 10, triode V6, diode D7, light emitting diode D8, light emitting diode D9 and DC relay J3;
One end of described resistance R 8 is connected with the negative pole of diode D6, the other end is connected with the base stage of triode V6, the grounded emitter of triode V6, the collector of triode V6 is connected with one end of the coil of DC relay J3, the coil other end of DC relay J3 is connected with the output terminal of voltage stabilizer V1, one end of the normally opened contact of described DC relay J3 is connected with the negative pole of diode D6, the other end is connected with the output terminal of voltage stabilizer V1, the collector of described triode V6 is also connected with the positive pole of diode D7, the negative pole of diode D7 is connected with the points of common connection of the output terminal of voltage stabilizer V1 with DC relay J3, the collector of described triode V6 is also connected with the positive pole of light emitting diode D8 by resistance R 10, the minus earth of light emitting diode D8, the negative pole of described light emitting diode D9 is connected with the points of common connection of resistance R 10 with triode V6, the positive pole of light emitting diode D9 is connected with the points of common connection of the output terminal of voltage stabilizer V1 with DC relay J3 by resistance R 9, by the effect of overcurrent display unit, can show intuitively the supply current normal condition of accumulator, conveniently storage battery power supply electric current is monitored and can be found in time and process over current fault.
Below in conjunction with accompanying drawing 1, accompanying drawing 2 and 3 pairs of principle of work of the present invention of accompanying drawing, be further explained.
The direct current transducer DC1 of take describes the principle of work of high pressure display unit as example: when the electric current of the output of the accumulator E1 of electric automobile is loaded on the high input voltage plug of DC converter DC1 by overcurrent identification protecting unit, now there is following result: the high voltage input terminal socket of (1) direct current transducer DC1 is access not, now, light emitting diode D23 bright light (green light), explanation is made and connects correct to the wire harness of the high input voltage plug of direct current transducer DC1 from the positive pole of electric battery E1, and the both positive and negative polarity of electric battery E1 does not have wiring error (this mode be used for checking wire harness correct errors) yet, (2) after the high voltage input terminal socket access of direct current transducer DC1, the battery output terminals A 2 that is the input end of direct current transducer DC1 and the input end of high pressure display unit and overcurrent protection recognition unit is connected, light emitting diode D23 continues bright light, represent that direct current transducer DC1 input end does not have short-circuit conditions, as the output terminal of direct current transducer DC1 does not now have low pressure output, there is open circuit situation in the high voltage input terminal that shows direct current transducer DC1, should emphasis checks the input end of direct current transducer DC1, (3) as the not access of the high voltage input terminal socket of direct current transducer DC1, light emitting diode D22, light emitting diode D23 do not have bright, the wire harness of the high voltage input terminal socket of explanation from electric battery E1 to direct current transducer DC1 has making mistake, make high pressure not be added to the two ends of light emitting diode D22 and light emitting diode D23, must check the making mistake of wire harness, as light emitting diode D22 bright light (red light), and light emitting diode D23 does not work, and shows that the both positive and negative polarity of electric battery E1 connects instead, must correct, for other high voltage parts, as identical with DC converter DC1 in the inspection principle of DC converter DC2, DC converter DC3, compressor controller, PTC controller and electric machine controller etc., not in this to go forth.
The inspection principle of low pressure display unit is identical with the inspection principle of high pressure display unit, the low-voltage that direct current transducer DC1 and direct current transducer DC2 and direct current transducer DC3 export is separately connected with low-voltage load (low-voltage electrical apparatus) respectively, therefore, when testing, need to carry out low pressure check equally, and low-voltage electrical includes the ACC that key switch is controlled, IG1, IG2 and three direct current transducers, wherein the low pressure of direct current transducer DC3 detects and reacts by FS8, to the low pressure check of DC converter DC1 as shown in Figure 1, by resistance R 11, the low pressure display unit that diode D10 (the second light emitting diode) and light emitting diode D11 (the first light emitting diode) form is tested, its inspection principle is identical with the high-voltage detection of direct current transducer DC1, certainly, the inspection principle of other low pressure parts is equally according to same principle.
Below in conjunction with Fig. 2 and Fig. 3, the principle of work of overcurrent protection module is described:
The input end A3 of described AC/DC conversion voltage regulation unit is connected with live wire, input end A5 is connected with zero line, AC/DC conversion voltage regulation unit is exported 220V alternating current the voltage of two 13V by the effect of transformer T1, then the rectifier bridge forming by diode D1, diode D2, diode D3 and diode D4, and by the effect of voltage stabilizer V1 and voltage stabilizer V2, after power switch K1 closure, output terminals A 9 output+12V voltages at voltage stabilizer V1, at the output terminals A 7 output-12V voltages of voltage stabilizer V2, and power to overcurrent identification protecting unit;
After being examined wire harness or electric components and connecting, press power switch K1 and high-voltage switch gear K2, the normally opened contact of A.C. contactor J1 is closed, the high pressure of electric battery E1 is loaded into checked parts by cell voltage input end A1 and the cell voltage output terminals A 2 of overcurrent protection recognition unit, and DC current sensor V4 detects the current signal of accumulator now, and convert current signal to in-phase end that voltage signal is input to amplifier V5 by resistance R 2 and resistance R 3, and the comparer consisting of amplifier V5 and reference voltage compare, this reference voltage is that 12V voltage carries out dividing potential drop setting by resistance R 5 and resistance R 4 and is loaded into the end of oppisite phase of amplifier V5, when the in-phase end voltage of amplifier V5 is less than end of oppisite phase voltage, amplifier V5 is output as 0, the high pressure that shows parts checks electric current in allowed limits, now triode V3 cut-off, DC relay J2 does not work, thereby the normally closed contact of DC relay J2 is kept closed, the Function detection of electric components continues, now after the coil of the output terminal of voltage stabilizer V1 by DC relay J3 and resistance R 10, make light emitting diode D8 obtain electric maintenance lighting lamp state (green light),
There is short trouble in the parts of arbitrary high voltage supply in checking, now the in-phase end voltage of amplifier V5 is greater than end of oppisite phase voltage, amplifier V5 output voltage becomes 12V from 0V, and capacitor C 5 is charged, when the voltage of capacitor C 5 rises to certain voltage value, triode V3 and triode V6 conducting, DC relay J2 and DC relay J3 all electric work, the normally closed contact point J2-1 of DC relay J2 disconnects, thereby A.C. contactor J1 is de-energized, thereby the high-tension current that contact point J1-1 returns to normally open accumulator E1 of often opening of A.C. contactor J1 disconnects power supply, DC relay J3 work, its normally opened contact J3-1 is by adhesive, export+12V voltage of voltage stabilizer V1 is loaded into capacitor C 5, make triode V3 and triode V6 continue to keep conducting state, thereby the supply access of guaranteeing accumulator E1 continues to be disconnected, now light emitting diode D8 extinguishes, light emitting diode D9 luminous (ruddiness), this process is continued until that power switch K1 and high-voltage switch gear K2 close, the parts that now can determine current detection break down or damage, need to keep in repair, after the fault of parts is excluded, after power switch K1 and high-voltage switch gear K2 restart, light emitting diode D8 is again luminous, diode D9 extinguishes, when current detected parts are normal, and when amplifier V5 is output as O, light emitting diode D8 makes light emitting diode D8 obtain electric current luminous after due to the coil of voltage stabilizer V1 output+12V voltage by DC relay J3 and resistance R 10, the working current of diode D8 is now much smaller than the working current of DC relay J3, therefore, even if now light emitting diode D8 is in running order and DC relay J3 still can not work, the normally opened contact J3-1 of DC relay J3 can be by adhesive.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. an electric automobile electric components FCS functional check-out set, is characterized in that: comprise overcurrent protection module and for showing the display module of the electric components function of electric motor car;
Described overcurrent protection module comprises AC/DC conversion voltage regulation unit and overcurrent identification protecting unit, the input end of described AC/DC conversion voltage regulation unit is electrically connected to city, the output terminal of AC/DC conversion voltage regulation unit is connected with overcurrent identification protecting unit, the input end of described overcurrent identification protecting unit is also connected with the positive pole of high tension battery, and the output terminal of described overcurrent identification protecting unit is connected with the input end of display module and electric components;
Described display module comprises that at least one group for showing that the high pressure display unit of high-voltage electrical apparatus parts function and at least one group are for showing the low pressure display unit of low-voltage electrical parts function; the input end of described high pressure display unit is connected with the output terminal of overcurrent identification protecting unit with the input end of high-voltage electrical apparatus parts, and the input end of described low pressure display unit is connected with the input end of low-voltage electrical parts.
2. electric automobile electric components FCS functional check-out set according to claim 1, it is characterized in that: described high pressure display unit comprises current-limiting resistance, the first light emitting diode and the second light emitting diode, one end of described current-limiting resistance is as the input end of display unit, the other end is connected with the positive pole of the first light emitting diode, the minus earth of the first light emitting diode, the negative pole of described the second light emitting diode is connected with the points of common connection of the first light emitting diode and current-limiting resistance, the plus earth of the second light emitting diode, described low pressure display unit is identical with the circuit structure of high pressure display unit.
3. according to electric automobile electric components verifying attachment described in claim 1 or 2, it is characterized in that: described AC/DC conversion voltage regulation unit comprises K switch 1, fuse F1, transformer T1, diode D1, diode D2, diode D3, diode D4, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, voltage stabilizer V1 and voltage stabilizer V2;
One end of described K switch 1 is connected with the live wire of civil power, the other end is connected with one end of the primary coil of transformer T1 by fuse F1, the other end of the primary coil of transformer T1 is connected with the zero line of civil power, the positive output end of the secondary coil of described transformer T1 is connected with the negative pole of diode D3 with the positive pole of diode D1, the negative output terminal of the secondary coil of transformer T1 is connected with the negative pole of diode D4 with the positive pole of diode D2, described diode D1 is connected with the negative pole of diode D2 and the input end of voltage stabilizer, the positive pole of described diode D3 and diode D4 is connected with the input end of voltage stabilizer V2, two secondary coils of described transformer T1 are provided with reference point ground connection, the input end of described voltage stabilizer V1 is by capacitor C 1 ground connection, the output terminal of described voltage stabilizer V1 is by the output terminal output positive voltage of capacitor C 3 ground connection and voltage stabilizer V1, the input end of described voltage stabilizer V2 is by capacitor C 2 ground connection, the output terminal of described voltage stabilizer V2 is by the output terminal output negative voltage of capacitor C 4 ground connection and voltage stabilizer V2.
4. electric automobile electric components verifying attachment according to claim 3, is characterized in that: described overcurrent identification protecting module comprises high-voltage switch gear K2, A.C. contactor J1, DC relay J2, diode D5, diode D6, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, capacitor C 5, DC current sensor V4, amplifier V5 and triode V3;
One end of described high-voltage switch gear K2 is connected with the points of common connection of the primary coil of transformer T1 with fuse F1, the other end of high-voltage switch gear K2 is connected with one end of the coil of A.C. contactor J1, the other end of the coil of A.C. contactor J1 is connected with the output terminal of the normally closed contact of DC relay J2, the input end of the normally closed contact of DC relay J2 is connected with the zero line of civil power, one end of the normally opened contact of described A.C. contactor J1 is connected with the positive pole of high-tension battery, the other end of the normally opened contact of A.C. contactor J1 as output terminal by the Voltage-output of high-tension battery to electric components and high pressure display unit, described DC current sensor V4 is arranged at the output of the normally opened contact of A.C. contactor J1, the positive power source terminal of described DC current sensor V4 is connected with the output terminal of voltage stabilizer V1, and the negative power end of DC current sensor V4 is connected with the output terminal of voltage stabilizer V2, the output terminal of described DC current sensor V4 is connected with the in-phase end of amplifier V5 by resistance R 2, the in-phase end of amplifier V5 is by resistance R 3 ground connection, the end of oppisite phase of amplifier V5 is by resistance R 4 ground connection, the end of oppisite phase of amplifier V5 is connected with the output terminal of voltage stabilizer V1 by resistance R 5, the output terminal of amplifier V5 is connected with the positive pole of diode D6 by resistance R 6, the negative pole of diode D6 is connected with the base stage of triode V3 by resistance R 1, triode V3 grounded emitter, the collector of triode V3 is connected with coil one end of DC relay J2, the other end of the coil of DC relay J2 is connected to the output terminal of voltage stabilizer V1, the collector of triode V3 is also connected with the positive pole of diode D5, the negative pole of diode D5 is connected with the output terminal of voltage stabilizer V1, the negative pole of described diode D6 is by resistance R 7 ground connection, the negative pole of described diode D6 is also by capacitor C 5 ground connection.
5. electric automobile electric components verifying attachment according to claim 4, it is characterized in that: described overcurrent protection module also comprises overcurrent display unit, described overcurrent display unit comprises: resistance R 8, resistance R 9, resistance R 10, triode V6, diode D7, light emitting diode D8, light emitting diode D9 and DC relay J3;
One end of described resistance R 8 is connected with the negative pole of diode D6, the other end is connected with the base stage of triode V6, the grounded emitter of triode V6, the collector of triode V6 is connected with one end of the coil of DC relay J3, the coil other end of DC relay J3 is connected with the output terminal of voltage stabilizer V1, one end of the normally opened contact of described DC relay J3 is connected with the negative pole of diode D6, the other end is connected with the output terminal of voltage stabilizer V1, the collector of described triode V6 is also connected with the positive pole of diode D7, the negative pole of diode D7 is connected with the points of common connection of the output terminal of voltage stabilizer V1 with DC relay J3, the collector of described triode V6 is also connected with the positive pole of light emitting diode D8 by resistance R 10, the minus earth of light emitting diode D8, the negative pole of described light emitting diode D9 is connected with the points of common connection of resistance R 10 with triode V6, the positive pole of light emitting diode D9 is connected with the points of common connection of the output terminal of voltage stabilizer V1 with DC relay J3 by resistance R 9.
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| CN111487484A (en) * | 2019-01-28 | 2020-08-04 | 杭州三花研究院有限公司 | Automobile part testing device, testing method and production line |
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