CN204030956U - A kind of circuit structure of electric motor car accessory power supply - Google Patents
A kind of circuit structure of electric motor car accessory power supply Download PDFInfo
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- CN204030956U CN204030956U CN201420322947.XU CN201420322947U CN204030956U CN 204030956 U CN204030956 U CN 204030956U CN 201420322947 U CN201420322947 U CN 201420322947U CN 204030956 U CN204030956 U CN 204030956U
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Abstract
The utility model relates to electric motor car driving power technical field, especially a kind of circuit structure of electric motor car accessory power supply.It comprises starting resistance R62, the first divider resistance R65, the second divider resistance R66, the 3rd divider resistance R11, the 4th divider resistance R12, electric capacity of voltage regulation C4, voltage-stabiliser tube, voltage comparator, the first triode V13 and the second triode V14.The utility model can provide two kinds of galvanic currents to press, and the one, 15V stabling current voltage is using the driving voltage as three-phase inverter; The 2nd, provide stable 5V reference voltage to circuit itself; Replace the metal-oxide-semiconductor in conventional power source by the first triode and the second triode, utilize voltage comparator to form and drive signal feeding circuit, thereby omitted intelligent control chip; The plurality of advantages such as its power consumption is little, efficiency is high and voltage stabilized range is wide, has very strong using value.
Description
Technical field
The utility model relates to electric motor car driving power technical field, especially a kind of circuit structure of electric motor car accessory power supply.
Background technology
Compared with traditional motor vehicle, electric motor car has advantages of energy-saving and environmental protection, time a new generation green traffic instrument.Along with popularizing gradually of electric motor car, the high performance ratio of Electrical Driving System of Electrical Vehicle becomes important research topic.
At present, the most of electric motor car drive circuit on market is also there are the following problems: output voltage is unstable, afterflow loss is high, caloric value is large, circuit structure is complicated, the problems such as efficiency and poor stability of drive circuit.
Utility model content
The deficiency existing for above-mentioned prior art, the purpose of this utility model is to provide a kind of circuit structure simple, according to the general principle of buck type Switching Power Supply, in inheriting the advantage of linear power supply, be conducive to reduce the caloric value of whole power circuit, improve the circuit structure of the electric motor car accessory power supply of Voltage-output stability.
To achieve these goals, the utility model adopts following technical scheme:
A circuit structure for electric motor car accessory power supply, it comprises starting resistance R62, the first divider resistance R65, the second divider resistance R66, the 3rd divider resistance R11, the 4th divider resistance R12, electric capacity of voltage regulation C4, voltage-stabiliser tube, voltage comparator, the first triode V13 and the second triode V14;
The input of described voltage-stabiliser tube is connected outside 48V DC power supply and is passed through to connect electric capacity of voltage regulation C4 ground connection by starting resistance R62, the collector and emitter of described the second triode V14 is connected in the two ends of starting resistance R62, the collector electrode of described the second triode V14 connects the negative terminal mouth of voltage comparator by the second divider resistance R65, the negative terminal mouth of described voltage comparator is by the second divider resistance R66 that connects successively, the 4th divider resistance R12 and the 3rd divider resistance R11 output 5V reference voltage;
The base stage of described the second triode V14 connects the collector electrode of the first triode V13, and the base stage of described the first triode V13 connects the output of voltage comparator by the second resistance R 22, and the emitter of described the first triode V13 is by the 3rd resistance R 23 ground connection;
The positive port of described voltage comparator is connected with the Vcc pin of voltage comparator and is connected between the 3rd divider resistance R11 and the 4th divider resistance R12 by the 4th resistance R 13 by the 4th resistance R 13, the first capacitor C 22 and the 5th resistance R 64 of connecting successively.
Preferably, the two ends of described electric capacity of voltage regulation C4 are parallel with variable resistor R6.
Preferably, the output of described voltage-stabiliser tube is connected with filter capacitor C5.
Owing to having adopted such scheme, the utility model can provide two kinds of galvanic currents to press, and the one, 15V stabling current voltage is using the driving voltage as three-phase inverter; The 2nd, provide stable 5V reference voltage to circuit itself; Replace the metal-oxide-semiconductor in conventional power source by the first triode and the second triode, utilize voltage comparator to form and drive signal feeding circuit, thereby omitted intelligent control chip; The plurality of advantages such as its power consumption is little, efficiency is high and voltage stabilized range is wide, has very strong using value.
Brief description of the drawings
Fig. 1 is the circuit structure diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, the circuit structure of the electric motor car accessory power supply of the present embodiment, it comprises starting resistance R62, the first divider resistance R65, the second divider resistance R66, the 3rd divider resistance R11, the 4th divider resistance R12, electric capacity of voltage regulation C4, LM7805 type voltage-stabiliser tube, LM358 type voltage comparator, the first triode V13 and the second triode V14;
The input of voltage-stabiliser tube connects outside 48V DC power supply by starting resistance R62 and by connecting electric capacity of voltage regulation C4 ground connection, the collector electrode of the second triode V14 is connected in one end of starting resistance R62, emitter the is connected in starting resistance R62 other end by resistor group (forming by resistance R 1, R2 and R3 are in parallel); The collector electrode of the second triode V14 connects the negative terminal mouth of voltage comparator by the second divider resistance R65, meanwhile, the negative terminal mouth of voltage comparator also passes through the second divider resistance R66 ground connection by the second divider resistance R66 that connects successively, the 4th divider resistance R12 and the 3rd divider resistance R11 output 5V reference voltage;
The base stage of the second triode V14 connects the collector electrode of the first triode V13 and connects the emitter of the second triode V14 by the first resistance R 21, and output, emitter that the base stage of the first triode V13 connects voltage comparator by the second resistance R 22 pass through the 3rd resistance R 23 ground connection;
The positive port of voltage comparator is connected with the Vcc pin of voltage comparator and is connected between the 3rd divider resistance R11 and the 4th divider resistance R12 by the 4th resistance R 13 by the 4th resistance R 13, the first capacitor C 22 and the 5th resistance R 64 of connecting successively.
In addition, be parallel with variable resistor R6 at the two ends of electric capacity of voltage regulation C4.Be connected with filter capacitor C5 at the output of voltage-stabiliser tube.
The operation principle of the circuit structure of the present embodiment is as follows: on main circuit, 48V direct current, through this branch road dividing potential drop of OP-1, provides 5V reference voltage by voltage-stabiliser tube to voltage comparator and other circuit; In whole circuit structure, be formed with a reduction voltage circuit that is similar to buck circuit, 48V direct current is after starting resistance R62, voltage at electric capacity of voltage regulation C4 place is about 15V, this 15V is the input voltage of voltage-stabiliser tube, carry out dividing potential drop through the first divider resistance R65 and the second divider resistance R66 again, this partial pressure value is as the negative terminal mouth input voltage of voltage comparator simultaneously; And the 5V reference voltage that voltage-stabiliser tube provides carries out dividing potential drop by the 3rd divider resistance R11 and the 4th divider resistance R12, the partial pressure value on the 4th divider resistance R12 is as the positive port input voltage of voltage comparator.
So, compare by the voltage of the positive port to voltage comparator and negative terminal mouth, control the conducting of the first triode V13 (NPN pipe) and close; When the voltage of negative terminal mouth is during higher than the voltage of positive port, voltage comparator output low level, is 0, can not make voltage-stabiliser tube conducting, and it is in closed condition; When the voltage of positive port is during higher than the voltage of negative terminal mouth, voltage comparator through on export high level (being about 5V) after drawing, voltage-stabiliser tube conducting, under conducting state, the first triode V13 and the second triode V14 are all in saturated and conducting state, the turn-on and turn-off of the first triode V13 have changed the on off state of the second triode V13, thereby are able to repeatedly to electric capacity of voltage regulation C4 charging, to maintain the stable output of 15V voltage.And the first capacitor C 22 add the effect that can play filtering, form positive feedback with voltage comparator, the course of work of the first capacitor C 22 is as follows: when the voltage of its positive port is during higher than the voltage of negative terminal mouth, output high level, because the both end voltage of the first capacitor C 22 is unequal, the first capacitor C 22 realizes positive charge, has reduced positive port magnitude of voltage; When the voltage of positive port is during lower than the voltage of negative terminal mouth, output low level, the first capacitor C 22 reverse chargings, rise the voltage of positive port.
In addition, when the input voltage of voltage comparator is within the specific limits time, the first triode V13 turn-on and turn-off have changed the base potential of the second triode V14, repeatedly give electric capacity of voltage regulation C4 charging, ensure voltage-stabiliser tube output 5V voltage, utilize filter capacitor C5 to form stable 5V Voltage-output, and utilize variable resistor R6 as load resistance, by changing its size, can change the work period of the first triode V13, thereby change the voltage of branch road out-15V.In the time that load is very large, because making the junction temperature of voltage-stabiliser tube, large electric current raises, and electric current becomes large and increases loss, cause output voltage to decline, can not get 5V reference voltage, and then cannot obtain reliable 15V output, by regulating variable resistor R6 to can be observed the operating characteristic of whole circuit.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. a circuit structure for electric motor car accessory power supply, is characterized in that: it comprises starting resistance (R62), the first divider resistance (R65), the second divider resistance (R66), the 3rd divider resistance (R11), the 4th divider resistance (R12), electric capacity of voltage regulation (C4), voltage-stabiliser tube, voltage comparator, the first triode (V13) and the second triode (V14);
The input of described voltage-stabiliser tube is connected outside 48V DC power supply and is passed through to connect electric capacity of voltage regulation (C4) ground connection by starting resistance (R62), the collector and emitter of described the second triode (V14) is connected in the two ends of starting resistance (R62), the collector electrode of described the second triode (V14) connects the negative terminal mouth of voltage comparator by the second divider resistance (R65), the negative terminal mouth of described voltage comparator is by the second divider resistance (R66) of connecting successively, the 4th divider resistance (R12) and the 3rd divider resistance (R11) output 5V reference voltage,
The base stage of described the second triode (V14) connects the collector electrode of the first triode (V13), the base stage of described the first triode (V13) connects the output of voltage comparator by the second resistance (R22), the emitter of described the first triode (V13) is by the 3rd resistance (R23) ground connection;
The positive port of described voltage comparator is connected with the Vcc pin of voltage comparator and is passed through the 4th resistance (R13) by the 4th resistance (R13), the first electric capacity (C22) and the 5th resistance (R64) of connecting successively and is connected between the 3rd divider resistance (R11) and the 4th divider resistance (R12).
2. the circuit structure of a kind of electric motor car accessory power supply as claimed in claim 1, is characterized in that: the two ends of described electric capacity of voltage regulation (C4) are parallel with variable resistor (R6).
3. the circuit structure of a kind of electric motor car accessory power supply as claimed in claim 2, is characterized in that: the output of described voltage-stabiliser tube is connected with filter capacitor (C5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322947.XU CN204030956U (en) | 2014-06-17 | 2014-06-17 | A kind of circuit structure of electric motor car accessory power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322947.XU CN204030956U (en) | 2014-06-17 | 2014-06-17 | A kind of circuit structure of electric motor car accessory power supply |
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| Publication Number | Publication Date |
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| CN204030956U true CN204030956U (en) | 2014-12-17 |
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| CN201420322947.XU Expired - Fee Related CN204030956U (en) | 2014-06-17 | 2014-06-17 | A kind of circuit structure of electric motor car accessory power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896971A (en) * | 2016-04-21 | 2016-08-24 | 江苏科技大学 | Brushless direct current motor power chopper circuit |
-
2014
- 2014-06-17 CN CN201420322947.XU patent/CN204030956U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896971A (en) * | 2016-04-21 | 2016-08-24 | 江苏科技大学 | Brushless direct current motor power chopper circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20180617 |