CN202663291U - Direct-current voltage converter - Google Patents
Direct-current voltage converter Download PDFInfo
- Publication number
- CN202663291U CN202663291U CN 201220342320 CN201220342320U CN202663291U CN 202663291 U CN202663291 U CN 202663291U CN 201220342320 CN201220342320 CN 201220342320 CN 201220342320 U CN201220342320 U CN 201220342320U CN 202663291 U CN202663291 U CN 202663291U
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- pwm pulse
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Abstract
The utility model relates to a direct-current voltage converter which comprises a vehicle-mounted battery pack, a PWM (pulse width modulation) pulse generation controller, a power output controller, a power driving controller, a power converter, an output rectification filter, an electric vehicle lock and vehicle load. The direct-current voltage converter is characterized in that an electromagnetic radiation prevention interference device and an input overflow detection protection circuit which is electrically connected with the PWM pulse generation controller are arranged between the vehicle-mounted battery pack and the power output controller; an input power supply control protection switch is electrically connected between the electric vehicle lock and the PWM pulse generation controller; and an output protection circuit and a detection comparison amplifying circuit are connected in parallel between the PWM pulse generation controller and the output rectification filter. The direct-current voltage converter provided by the utility model is simple in structure and low in manufacturing cost, has a good self protection function and long service life, improves the anti-interference capability, has good electromagnetic compatibility, is low in self power consumption, difficult to heat, good in reliability, safety and running stability and low in maintaining and repairing cost, and has a good economic property.
Description
Technical field
The utility model relates to a kind of power supply changeover device, is specifically related to a kind of dc voltage changer.
Background technology
Electric automobile dc voltage changer, its function are the battery pack dc high voltage to be converted to the DC low-voltage such as 12V, 24V.Conversion regime has two kinds of series electrical minor and switch electronic formulas.The series electrical minor is to be connected on the pliotron C in the loop, the voltage at E two ends by change, keeps the stable of output LOW voltage, reaches the purpose that dc high voltage is converted to DC low-voltage; Its advantage is that circuit structure is simple, and production cost is low; Its shortcoming is that volume is large, and self power consumption is large, and the voltage drop element power consumption is high and easily damage, conversion efficiency is low.The switch electronic formula is to adopt to be connected on loop medium-high frequency high-power MOSFET tube electronic component, be operated in the state of turn-on and turn-off by power MOSFET tube by high-frequency PWM pwm switch circuit, the time ratio of control switch pipe turn-on and turn-off, keep regulated output voltage, its advantage is that own loss is little, efficient is high, little, the reliable operation of heating; Its shortcoming is that circuit is complicated, requirement is equipped with dedicated manufacturing equipment, manufacturing expense is high.
Summary of the invention
The purpose of this utility model is the shortcoming that will overcome above-mentioned technology, provide a kind of simple in structure, volume is little, easy to manufacture, conversion efficiency is high, the dc voltage changer of good reliability.
Dc voltage changer of the present utility model, comprise on-vehicle battery group, pwm pulse generator controller, power output controller, power driving controller, power converter, output rectification filter device and automobile-used electric lock and automobile-used load, it is characterized in that: be electrically connected with anti-electromagnetic radiation interference unit and input over-current detection protective circuit between described on-vehicle battery group and the power output controller; Be electrically connected with input power control protection switch between described automobile-used electric lock and the pwm pulse generator controller; Be connected in parallel to output protection circuit between described pwm pulse generator controller and the output rectification filter device and detect relatively amplifying circuit.
In order better to realize above-mentioned purpose:
Described output protection circuit is built-in with temperature-control circuit, overvoltage control circuit and over-current control circuit.
Described input over-current detection protective circuit also is electrically connected with the pwm pulse generator controller.
This dc voltage changer is simple in structure, manufacturing expense is low, set up input power control protection switch, protection circuit for input and output, anti-electromagnetic radiation interference unit and detected relatively amplifying circuit, protective capability and the useful life of having improved dc voltage changer self; Antijamming capability is strong, Electro Magnetic Compatibility good, oneself power consumption is little, is difficult for heating, reliability, fail safe and good operation stability, and the maintenance and repair expense is low, good economy performance.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Among the figure: 1, on-vehicle battery group, 2, the anti-electromagnetic radiation interference unit, 3, input over-current detection protective circuit; 4, power output controller, 5, power converter, 6, the output rectification filter device; 7, automobile-used electric lock, 8, input power control protection switch, 9, power driving controller; 10, output protection circuit, 11, automobile-used load, 12, the pwm pulse generator controller; 13, detect relatively amplifying circuit; 14, temperature-control circuit, 15 overvoltage control circuits, 16, over-current control circuit.
Embodiment
Dc voltage changer of the present utility model is electrically connected to form by on-vehicle battery group 1, pwm pulse generator controller 12, power output controller 4, power driving controller 9, power converter 5, output rectification filter device 6 and automobile-used electric lock 7 and automobile-used load 11.Be electrically connected with anti-electromagnetic radiation interference unit 2 and input over-current detection protective circuit 3 between on-vehicle battery group 1 and the power output controller 4, input over-current detection protective circuit 3 also is electrically connected with pwm pulse generator controller 12; Be electrically connected with input power control protection switch 8 between automobile-used electric lock 7 and the pwm pulse generator controller 12; Be connected in parallel to output protection circuit 10 between pwm pulse generator controller 12 and the output rectification filter device 6 and detect relatively amplifying circuit 13.Output protection circuit 10 is built-in with temperature-control circuit 14, overvoltage control circuit 15 and over-current control circuit 16.
Operation principle of the present utility model is as follows:
To 1 power supply of on-vehicle battery group, voltage at first passes through anti-electromagnetic radiation interference unit 2, can effectively leach power supply medium-high frequency harmonic wave, and the high frequency radiation of dc voltage changer capable of blocking inside, so just can effectively control it to the electromagnetic interference of outside first.The battery pack operating voltage is sent into the control end of transducer through automobile-used electric lock 7, transducer work when this end is battery voltage, when this end during without battery voltage transducer do not work.
Claims (3)
1. dc voltage changer, comprise on-vehicle battery group (1), pwm pulse generator controller (12), power output controller (4), power driving controller (9), power converter (5), output rectification filter device (6) and automobile-used electric lock (7) and automobile-used load (11), it is characterized in that: be electrically connected with anti-electromagnetic radiation interference unit (2) and input over-current detection protective circuit (3) between described on-vehicle battery group (1) and the power output controller (4); Be electrically connected with input power control protection switch (8) between described automobile-used electric lock (7) and the pwm pulse generator controller (12); Be connected in parallel to output protection circuit (10) between described pwm pulse generator controller (12) and the output rectification filter device (6) and detect relatively amplifying circuit (13).
2. dc voltage changer according to claim 1, it is characterized in that: described output protection circuit (10) is built-in with temperature-control circuit (14), overvoltage control circuit (15) and over-current control circuit (16).
3. dc voltage changer according to claim 1, it is characterized in that: described input over-current detection protective circuit (3) also is electrically connected with pwm pulse generator controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342320 CN202663291U (en) | 2012-07-16 | 2012-07-16 | Direct-current voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342320 CN202663291U (en) | 2012-07-16 | 2012-07-16 | Direct-current voltage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663291U true CN202663291U (en) | 2013-01-09 |
Family
ID=47458166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220342320 Expired - Fee Related CN202663291U (en) | 2012-07-16 | 2012-07-16 | Direct-current voltage converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821745A (en) * | 2021-01-04 | 2021-05-18 | 东风柳州汽车有限公司 | Power supply conversion system applied to commercial vehicle |
-
2012
- 2012-07-16 CN CN 201220342320 patent/CN202663291U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821745A (en) * | 2021-01-04 | 2021-05-18 | 东风柳州汽车有限公司 | Power supply conversion system applied to commercial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |