CN205178872U - Electric automobile DCDCConverter's enable signal control circuit - Google Patents
Electric automobile DCDCConverter's enable signal control circuit Download PDFInfo
- Publication number
- CN205178872U CN205178872U CN201521000474.2U CN201521000474U CN205178872U CN 205178872 U CN205178872 U CN 205178872U CN 201521000474 U CN201521000474 U CN 201521000474U CN 205178872 U CN205178872 U CN 205178872U
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- resistance
- enable signal
- voltage
- pin
- control circuit
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Abstract
The utility model discloses an electric automobile DCDCConverter's enable signal control circuit, including connecting voltage comparison circuit and the control circuit between input enable signal end DCDC_EN1 and output enable signal end EN, voltage comparison circuit is when the enable signal high -low level reversal of input, compares the output high -low level with reference voltage, control circuit is that through the break -make of control opto -coupler diode, the realization is to the control of EN voltage when comparison circuit output high -low level. The utility model discloses an adjustable shunt regulator U1 of DCDC_EN1 input height level control three -terminal output high -low level, when the adjustable shunt regulator U1's of three -terminal output level control opto -coupler U2's break -make, control the output EN's of opto -coupler magnitude of voltage promptly, whole DCDC converter's operating condition is controlled promptly to the height of EN's magnitude of voltage.
Description
Technical field
The utility model relates to electric automobile field, specifically the enable signal control circuit of a kind of electric automobile DCDCConverter.
Background technology
In conventional power source, as long as DCDCConverter just can normally work under normal circumstances in power supply, do not need people for controlling.And in electric automobile, there is very large potential safety hazard and energy loss in this phenomenon.By the work schedule of conventional power source, as long as after high pressure normal power supply, DCDCConverter can continue in running order, namely continue to power to car load 12V lead acid accumulator, overcharging of lead-acid battery can be caused, have a strong impact on life-span and the stability of lead-acid battery, cause driving hidden danger.Meanwhile, because the power conversion of DCDC can not accomplish 100%, long-time uncontrollable power conversion can cause more energy loss, shortens mileage.So the control to vehicle-mounted DCDCConverter must be increased.But, so far not about the open report of the enable signal control circuit of electric automobile DCDCConverter.
Summary of the invention
The technical problems to be solved in the utility model is to provide the enable signal control circuit of a kind of electric automobile DCDCConverter, makes DCDCConverter open-minded when needs work, does not need to turn off during work, realizes the controlled of DCDCConverter.
The technical solution of the utility model is:
An enable signal control circuit of electric automobile DCDCConverter, include be connected to input enable signal end DCDC_EN1 and output enable signal end EN between voltage comparator circuit and control circuit; Described voltage comparator circuit includes the adjustable shunt regulator U1 of resistance R3, resistance R4, resistance R5 and three ends, the right-hand member of resistance R5 connects input enable signal end DCDC_EN1, the left end of resistance R5 meets GND via resistance R3, the pin 3 of the adjustable shunt regulator U1 of upper termination three end of resistance R4, the pin 2 that the left end of the lower end of resistance R4, the upper end of resistance R3 and resistance R5 is connected in parallel to the adjustable shunt regulator U1 of pin 1, three end of the adjustable shunt regulator U1 of three ends meets GND; Described control circuit includes voltage-stabiliser tube Z1 and optocoupler U2, the negative electrode of voltage-stabiliser tube Z1 is connected with power supply VCC, the anode of voltage-stabiliser tube Z1 connects GND, the pin 1 of optocoupler U2 connects the pin 3 of adjustable shunt regulator U1, the pin 2 of optocoupler U2 connects the negative electrode of voltage-stabiliser tube Z1, the pin 3 of optocoupler U2 meets GND1, and the pin 4 of optocoupler U2 meets output enable signal end EN.
Described control circuit also includes resistance R1 and resistance R2, the upper end of resistance R1 connects power supply VCC, the negative electrode of voltage-stabiliser tube Z1 is accessed in the lower end of resistance R1 via resistance R2, the lower end of resistance R1 and the upper end of resistance R2 are connected in parallel to the pin 3 of adjustable shunt regulator U1.
Advantage of the present utility model:
The utility model realizes the real-time control to DCDCConverter operating state, and when waiting does not disconnect high pressure, now do not need DCDCConverter to work, DCDCConverter quits work; When car load detects that 12V cell voltage is on the low side, need DCDCConverter to work, DCDCConverter starts working, and achieves the efficient work of DCDCConverter, the damage of the energy loss that avoiding works long hours causes and self components and parts, increases the service life.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
See Fig. 1, the enable signal control circuit of a kind of electric automobile DCDCConverter, include be connected to input enable signal end DCDC_EN1 and output enable signal end EN between voltage comparator circuit and control circuit; Described voltage comparator circuit includes the adjustable shunt regulator U1 of resistance R3, resistance R4, resistance R5 and three ends, and the right-hand member of resistance R5 connects input enable signal end DCDC_EN1, and the left end of resistance R5 meets GND via resistance R3; The pin 3 of the adjustable shunt regulator U1 of upper termination three end of resistance R4, the pin 1 of the adjustable shunt regulator U1 of lower termination three end of resistance R4, and the pin 1 contact resistance R3 of the adjustable shunt regulator U1 of three ends and the link of resistance R5, the pin 2 of the adjustable shunt regulator U1 of three ends meets GND; Described control circuit includes voltage-stabiliser tube Z1, optocoupler U2, resistance R1 and resistance R2, the upper end of resistance R1 connects power supply VCC, the negative electrode of voltage-stabiliser tube Z1 is accessed in the lower end of resistance R1 via resistance R2, the anode of voltage-stabiliser tube Z1 connects GND, the upper end of the pin 1 of optocoupler U2, the lower end of resistance R1 and resistance R2 is connected in parallel to the pin 3 of adjustable shunt regulator U1, the pin 2 of optocoupler U2 connects the negative electrode of voltage-stabiliser tube Z1, and the pin 3 of optocoupler U2 meets GND1, and the pin 4 of optocoupler U2 meets output enable signal end EN.
As shown in Figure 1, when not needing DCDCConverter to work, input enable signal end DCDC_EN1 is in low level, after resistance R5 and resistance R3 dividing potential drop, the level inputting three ends adjustable shunt regulator U1 pin 1 is low level, lower than 2.5V, so the output of input three end adjustable shunt regulator U1 pin 3 is high level, higher than the voltage stabilizing value of voltage-stabiliser tube Z1, the now LEDs ON of optocoupler U2, the triode ON of optocoupler U2, output enable signal end EN output low level, be sent to the control chip of DCDCConverter, DCDCConverter quits work,
When needs DCDCConverter works, input enable signal end DCDC_EN1 is in high level, after resistance R5 and resistance R3 dividing potential drop, the level inputting three ends adjustable shunt regulator U1 pin 1 is high level, higher than 2.5V, so the output of input three end adjustable shunt regulator U1 pin 3 is low level, lower than the voltage stabilizing value of voltage-stabiliser tube Z1, now the light-emitting diode of optocoupler U2 can not conducting, the triode of optocoupler U2 is also in off-state, the magnitude of voltage that DCDCConverter gives tacit consent to output enable signal end EN is high level, be sent to the control chip of DCDCConverter, DCDCConverter starts working.
Claims (2)
1. an enable signal control circuit of electric automobile DCDCConverter, is characterized in that: include be connected to input enable signal end DCDC_EN1 and output enable signal end EN between voltage comparator circuit and control circuit; Described voltage comparator circuit includes the adjustable shunt regulator U1 of resistance R3, resistance R4, resistance R5 and three ends, the right-hand member of resistance R5 connects input enable signal end DCDC_EN1, the left end of resistance R5 meets GND via resistance R3, the pin 3 of the adjustable shunt regulator U1 of upper termination three end of resistance R4, the pin 2 that the left end of the lower end of resistance R4, the upper end of resistance R3 and resistance R5 is connected in parallel to the adjustable shunt regulator U1 of pin 1, three end of the adjustable shunt regulator U1 of three ends meets GND; Described control circuit includes voltage-stabiliser tube Z1 and optocoupler U2, the negative electrode of voltage-stabiliser tube Z1 is connected with power supply VCC, the anode of voltage-stabiliser tube Z1 connects GND, the pin 1 of optocoupler U2 connects the pin 3 of adjustable shunt regulator U1, the pin 2 of optocoupler U2 connects the negative electrode of voltage-stabiliser tube Z1, the pin 3 of optocoupler U2 meets GND1, and the pin 4 of optocoupler U2 meets output enable signal end EN.
2. the enable signal control circuit of a kind of electric automobile DCDCConverter according to claim 1, it is characterized in that: described control circuit also includes resistance R1 and resistance R2, the upper end of resistance R1 connects power supply VCC, the negative electrode of voltage-stabiliser tube Z1 is accessed in the lower end of resistance R1 via resistance R2, the lower end of resistance R1 and the upper end of resistance R2 are connected in parallel to the pin 3 of adjustable shunt regulator U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000474.2U CN205178872U (en) | 2015-12-07 | 2015-12-07 | Electric automobile DCDCConverter's enable signal control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000474.2U CN205178872U (en) | 2015-12-07 | 2015-12-07 | Electric automobile DCDCConverter's enable signal control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205178872U true CN205178872U (en) | 2016-04-20 |
Family
ID=55742802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521000474.2U Withdrawn - After Issue CN205178872U (en) | 2015-12-07 | 2015-12-07 | Electric automobile DCDCConverter's enable signal control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205178872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356741A (en) * | 2015-12-07 | 2016-02-24 | 合肥巨一动力系统有限公司 | Enabling signal control circuit of electric automobile DCDC Converter |
-
2015
- 2015-12-07 CN CN201521000474.2U patent/CN205178872U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356741A (en) * | 2015-12-07 | 2016-02-24 | 合肥巨一动力系统有限公司 | Enabling signal control circuit of electric automobile DCDC Converter |
| CN105356741B (en) * | 2015-12-07 | 2019-02-05 | 一巨自动化装备（上海）有限公司 | A kind of enable signal control circuit of electric car DCDC Converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20190205 |
|
| AV01 | Patent right actively abandoned |