CN105584371A - Car power supply system with pressure-boosting function - Google Patents
Car power supply system with pressure-boosting function Download PDFInfo
- Publication number
- CN105584371A CN105584371A CN201410558035.7A CN201410558035A CN105584371A CN 105584371 A CN105584371 A CN 105584371A CN 201410558035 A CN201410558035 A CN 201410558035A CN 105584371 A CN105584371 A CN 105584371A
- Authority
- CN
- China
- Prior art keywords
- voltage
- voltage stabilizing
- high pressure
- pressure drop
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Provided is a car power supply system with a pressure-boosting function. The car power supply system comprises a storage battery, a protection circuit, a primary high-voltage-reduction converter, and a secondary low-voltage-reduction converter. Voltage outputted by the protection circuit is inputted to a front-end voltage-boosting circuit of the primary high-voltage-reduction converter. The protection circuit is connected to an output end of the storage battery. The secondary low-voltage-reduction converter is connected to the primary high-voltage-reduction converter. The primary high-voltage-reduction converter comprises a first LDO voltage-stabilizing module, a second voltage-stabilizing module and a third voltage-stabilizing module. The car power supply system with the pressure-boosting function has following beneficial effects: the front-end voltage-boosting circuit is additionally arranged on the primary high-voltage-reduction converter; with the reduction of battery voltage, stable input voltage is supplied to the primary high-voltage-reduction converter such that a follow-up circuit and a downstream system supply electricity; a secondary low-voltage-reduction circuit is capable of adapting output voltage of the primary high-voltage-reduction converter to multiple different kinds of voltage output so that the car power supply system is high in generality.
Description
Technical field
The present invention relates to automobile power source field, particularly, relate to a kind of automobile power source electric power system with boost function.
Background technology
Nowadays, user vehicle is more and more responsive to oil consumption, expects energy-saving fuel expenditure, objectively also can help to reduce the impact on environment simultaneously. Coordinate this trend for knowing clearly, automobile manufacturers adopts various approach to reduce consumption one after another, and wherein a kind of approach is exactly application " start/stop " (Start/Stop) function automatically in new model, in helping to reduce oil consumption, also increases selling point.
So-called automatic start-stop function is exactly automobile because traffic congestion or etc. red light and while stopping, the system of these innovations automatically kill engine (stopping working); And in the time that driver's pin is shifted to gas pedal from brake pedal, engine (igniting) just resets automatically. This just helps to reduce, and drive in urban district and unnecessary oil consumption when the stop-go formula heavy traffic phase, reduces discharge.
Although said system can reduce oil consumption; but its power supply has larger limitation: the electric supply system in automobile of the prior art generally by the battery connecting successively, prevent the holding circuit of circuit reversal connection, by the output voltage stabilization of battery at the elementary high pressure drop pressure converter of 5V output, the output of elementary high pressure drop pressure converter is further being reduced and is being stabilized in 3.8,2.2,1.2 volts or other secondary low-voltage step-down controllers lower than the voltage of 5V; in the time of engine restart, the rapid drawdown of cell voltage possibility is even lower to 6.0V. And in orthodox car power supply structure, holding circuit comprises reversed polarity diode, for start (jumpstarted) at automobile jumper connection, the reverse event of jumper cable is protected electronic circuit. Holding circuit itself produces pressure drop, and making circuit downstream voltage is only 5.5V or lower. And the number of modules in downstream still requires 5V power supply, too low pressure reduction makes elementary high pressure drop pressure converter not have enough surpluses normally to work.
Summary of the invention
The object of the invention is to overcome the problems referred to above of the prior art, a kind of automobile power source electric power system with boost function is provided, this automobile power source electric power system with boost function can stably be supplied with stable input voltage to downstream module.
The present invention addresses the above problem adopted technical scheme:
There is the automobile power source electric power system of boost function; comprise battery, prevent the holding circuit of circuit reversal connection, elementary high pressure drop pressure converter, secondary low-voltage step-down controller; described holding circuit is connected to the output of battery; described secondary low-voltage step-down controller also comprises after being connected to elementary high pressure drop pressure converter:
Preposition booster circuit, for inputing to elementary high pressure drop pressure converter after the boost in voltage of holding circuit output;
Described secondary low-voltage step-down controller comprise by the output voltage voltage stabilizing of elementary high pressure drop pressure converter a LDO Voltage stabilizing module of 3.3V, by the output voltage voltage stabilizing of elementary high pressure drop pressure converter at the 2nd LDO Voltage stabilizing module of 2.5V, the 3rd LDO Voltage stabilizing module by the output voltage voltage stabilizing of a LDO Voltage stabilizing module at 1.2V.
As a further improvement on the present invention, the described automobile power source electric power system with boost function also comprises the 3rd filtration module that the input signal of preposition booster circuit is carried out to filtering, and the input signal of elementary high pressure drop pressure converter is carried out to the 4th filtration module of filtering; The 3rd filtration module is connected between holding circuit and preposition booster circuit; The 4th filtration module is connected between preposition booster circuit and elementary high pressure drop pressure converter.
Further, between a described LDO Voltage stabilizing module and elementary high pressure drop pressure converter output, be connected with the first filtration module, between the 2nd LDO Voltage stabilizing module and elementary high pressure drop pressure converter output, be connected with the second filtration module, between a described LDO Voltage stabilizing module and the 3rd LDO Voltage stabilizing module, be connected with the 5th filtration module.
Further, the electric capacity that electric capacity that described the first filtration module is 0.01 microfarad by an inductance, 1 capacitance, 1 capacitance are 0.1 microfarad forms, inductance one end connects the output of elementary high pressure drop pressure converter, and the other end connects the input of a LDO Voltage stabilizing module; After two Capacitance parallel connections, one end connects the input of a corresponding LDO Voltage stabilizing module, other end ground connection.
Further, the circuit structure of described the second filtration module, the 5th filtration module is identical with the first filtration module.
Further, the 3rd filtration module is the electric capacity that capacitance is 2.2 microfarads, and this electric capacity one end connects the input of preposition booster circuit, other end ground connection; Described the 4th filtration module is the electric capacity that capacitance is 1 microfarad, and this electric capacity one end connects the input of elementary high pressure drop pressure converter, other end ground connection.
Preferably, described preposition booster circuit adopts the NCV8871 chip of ONNN.
Preferably, described preposition booster circuit adopts LT1930ES5 chip; A described LDO Voltage stabilizing module, elementary high pressure drop pressure converter and the 2nd LDO Voltage stabilizing module adopt LT1763 or LT1761 chip; Described the 3rd LDO Voltage stabilizing module adopts LT1761 chip.
Preferably, described holding circuit is a diode.
To sum up, the invention has the beneficial effects as follows:
1, the present invention has set up preposition booster circuit at the elementary high pressure drop pressure converter of the automobile power source electric power system with boost function, in the situation that cell voltage reduces, this preposition booster circuit supplies with stable input voltage can to the elementary high pressure drop pressure converter in downstream, follow-up elementary high pressure drop pressure converter and secondary low-voltage step-down controller afterwards are appropriately worked, and be down-stream system power supply;
2, secondary low-voltage reduction voltage circuit of the present invention can be adapted for the output voltage of elementary high pressure drop pressure converter multiple different Voltage-output, and highly versatile can be supported all Power supplies in car; Can also support the power supply requirement of some special circuits;
3, the present invention is also for each LDO Voltage stabilizing module of elementary high pressure drop pressure converter and secondary low-voltage step-down controller is provided with filtration module, and the power supply signal of input is stable, and noise is little.
Brief description of the drawings
Fig. 1 is schematic block circuit diagram of the present invention;
Fig. 2 is the circuit diagram of preposition booster circuit.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
As shown in Figure 1, there is the automobile power source electric power system of boost function, comprising:
Battery, for power supply;
Holding circuit, for preventing circuit reversal connection, is connected to the output of battery, and in the present embodiment, holding circuit adopts a diode;
Preposition booster circuit, for boosting to the voltage of inputting elementary high pressure drop pressure converter and outputing to elementary high pressure drop pressure controller;
The 3rd filtration module, for the input signal of preposition booster circuit is carried out to filtering, is connected between holding circuit and preposition booster circuit;
Elementary high pressure drop pressure converter, exports the output voltage stabilization of battery at 5V;
The 4th filtration module, for the input signal of elementary high pressure drop pressure converter is carried out to filtering, is connected between preposition booster circuit and elementary high pressure drop pressure converter;
Secondary low-voltage step-down controller, further reduces the output of elementary high pressure drop pressure converter to be stabilized in 3.8,2.2,1.2 volts or other voltages lower than 5V.
Described secondary low-voltage step-down controller comprise by the output voltage voltage stabilizing of elementary high pressure drop pressure converter a LDO Voltage stabilizing module of 3.3V, by the output voltage voltage stabilizing of elementary high pressure drop pressure converter at the 2nd LDO Voltage stabilizing module of 2.5V, the 3rd LDO Voltage stabilizing module by the output voltage voltage stabilizing of a LDO Voltage stabilizing module at 1.2V.
Between a described LDO Voltage stabilizing module and elementary high pressure drop pressure converter output, be connected with the first filtration module, between the 2nd LDO Voltage stabilizing module and elementary high pressure drop pressure converter output, be connected with the second filtration module, between a described LDO Voltage stabilizing module and the 3rd LDO Voltage stabilizing module, be connected with the 5th filtration module.
As shown in Figure 2, in the present embodiment, the LT1930ES5 chip of described preposition booster circuit Linear company, it is 1.2MHz that Jian closes frequency, the easy filtering of switching noise of introducing, and peripheral components is simple, and SOT-23 encapsulates model, and chip size is only 3mmx3mm. And the output voltage that boosts of LT1930ES5 can not be too high here, otherwise power attenuation on rear class LDO is very large, causes that chip sends out money, after equipment work a period of time, can cause whole circuit board heating. Described the 4th filtration module is the electric capacity that capacitance is 1 microfarad, and this electric capacity one end connects the input of respective primary high pressure drop pressure converter, other end ground connection.
Fig. 2 is the peripheral circuit diagram of LT1930ES5 chip, can set LT1930ES5 output voltage values by the resistance value of selecting R45 and R57, Linear Techn Inc.'s suggestion R57 value is 13.3K, and therefore the electric current on electric resistance partial pressure circuit is 1.255V/13.3K=94.7 microampere. LT1930ES5 chip can, by output voltage stabilization at 7V, then be supplied with subsequent conditioning circuit.
In practical application, above-mentioned preposition booster circuit can also adopt the NCV8871 chip of ONNN, and this chip is an asynchronous boost pressure controller of adjustable output, and it also can carry out pressure regulation to output voltage.
A described LDO Voltage stabilizing module, elementary high pressure drop pressure converter and the 2nd LDO Voltage stabilizing module adopt LT1763 or the LT1761 chip of Linear Techn Inc.; LTl763, LT1761 have the voltage output value such as 3.3V, 5V, and the main distinction is that maximum output circuit is respectively 300mA and 100mA, and the encapsulation of LTl761 chip is very little; Described the 3rd LDO Voltage stabilizing module adopts LT1761 chip, need to have 1.2V power supply output valve.
Described the 3rd filtration module is the electric capacity that capacitance is 2.2 microfarads, and this electric capacity one end connects the input of preposition booster circuit, other end ground connection;
Circuit, first filtering modular structure of the second filtration module, the 5th filtration module are identical, the structure of explanation filtration module as an example of the first filtration module example below: the first filtration module is made up of as the electric capacity of 0.01 microfarad, 1 capacitance as the electric capacity of 0.1 microfarad an inductance, 1 capacitance, inductance one end connects the output of elementary high pressure drop pressure converter, and the other end connects the input of a LDO Voltage stabilizing module; After two Capacitance parallel connections, one end connects the input of a LDO Voltage stabilizing module, other end ground connection. The circuit of the second filtration module, the 5th filtration module is identical with structure, just the output of the second filtration module connects the 2nd LDO Voltage stabilizing module, and the input of the 5th filtration module connects the output of a LDO Voltage stabilizing module, the input that output connects the 3rd LDO Voltage stabilizing module.
In the present invention, voltage carries out linear voltage stabilization output from battery output after preposition booster circuit boosts again, in the situation that cell voltage reduces, this preposition booster circuit supplies with stable input voltage can to the elementary high pressure drop pressure converter in downstream, follow-up elementary high pressure drop pressure converter and secondary low-voltage step-down controller afterwards are appropriately worked, and be down-stream system power supply; In secondary low-voltage step-down controller, adopt multi-disc LDO (low pressure difference linearity voltage-stabilized power supply) chip to export different burning voltages, supply with different circuit, highly versatile. Between every two-stage input and output of voltage, be all designed with π type filter network, and used the ceramic condenser decoupling capacitance of solid-state tantalum electric capacity and the encapsulation of O.luF paster. To suppress power supply noise, prevent self-oscillation, guarantee that voltage output value can stablize in the time of different loads.
Below be only the preferred embodiment of the present invention, protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (9)
1. there is the automobile power source electric power system of boost function; comprise battery, prevent the holding circuit of circuit reversal connection, elementary high pressure drop pressure converter, secondary low-voltage step-down controller; described holding circuit is connected to the output of battery; after described secondary low-voltage step-down controller is connected to elementary high pressure drop pressure converter; it is characterized in that, also comprise:
Preposition booster circuit, for inputing to elementary high pressure drop pressure converter after the boost in voltage of holding circuit output;
Described secondary low-voltage step-down controller comprise by the output voltage voltage stabilizing of elementary high pressure drop pressure converter a LDO Voltage stabilizing module of 3.3V, by the output voltage voltage stabilizing of elementary high pressure drop pressure converter at the 2nd LDO Voltage stabilizing module of 2.5V, the 3rd LDO Voltage stabilizing module by the output voltage voltage stabilizing of a LDO Voltage stabilizing module at 1.2V.
2. the automobile power source electric power system with boost function according to claim 1, it is characterized in that, also comprise the 3rd filtration module that the input signal of preposition booster circuit is carried out to filtering, and the input signal of elementary high pressure drop pressure converter is carried out to the 4th filtration module of filtering; The 3rd filtration module is connected between holding circuit and preposition booster circuit; The 4th filtration module is connected between preposition booster circuit and elementary high pressure drop pressure converter.
3. the automobile power source electric power system with boost function according to claim 1, it is characterized in that, between a described LDO Voltage stabilizing module and elementary high pressure drop pressure converter output, be connected with the first filtration module, between the 2nd LDO Voltage stabilizing module and elementary high pressure drop pressure converter output, be connected with the second filtration module, between a described LDO Voltage stabilizing module and the 3rd LDO Voltage stabilizing module, be connected with the 5th filtration module.
4. the automobile power source electric power system with boost function according to claim 3, it is characterized in that, the electric capacity that electric capacity that described the first filtration module is 0.01 microfarad by an inductance, 1 capacitance, 1 capacitance are 0.1 microfarad forms, inductance one end connects the output of elementary high pressure drop pressure converter, and the other end connects the input of a LDO Voltage stabilizing module; After two Capacitance parallel connections, one end connects the input of a corresponding LDO Voltage stabilizing module, other end ground connection.
5. the automobile power source electric power system with boost function according to claim 4, is characterized in that, the circuit structure of described the second filtration module, the 5th filtration module is identical with the first filtration module.
6. the automobile power source electric power system with boost function according to claim 3, is characterized in that, the 3rd filtration module is the electric capacity that capacitance is 2.2 microfarads, and this electric capacity one end connects the input of preposition booster circuit, other end ground connection; Described the 4th filtration module is the electric capacity that capacitance is 1 microfarad, and this electric capacity one end connects the input of elementary high pressure drop pressure converter, other end ground connection.
7. according to the arbitrary described automobile power source electric power system with boost function of claim 1 to 6, it is characterized in that, described preposition booster circuit adopts the NCV8871 chip of ONNN.
8. according to the arbitrary described automobile power source electric power system with boost function of claim 1 to 6, it is characterized in that, described preposition booster circuit adopts LT1930ES5 chip; A described LDO Voltage stabilizing module, elementary high pressure drop pressure converter and the 2nd LDO Voltage stabilizing module adopt LT1763 or LT1761 chip; Described the 3rd LDO Voltage stabilizing module adopts LT1761 chip.
9. according to the arbitrary described automobile power source electric power system with boost function of claim 1 to 6, it is characterized in that, described holding circuit is a diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558035.7A CN105584371A (en) | 2014-10-18 | 2014-10-18 | Car power supply system with pressure-boosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558035.7A CN105584371A (en) | 2014-10-18 | 2014-10-18 | Car power supply system with pressure-boosting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105584371A true CN105584371A (en) | 2016-05-18 |
Family
ID=55924402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410558035.7A Pending CN105584371A (en) | 2014-10-18 | 2014-10-18 | Car power supply system with pressure-boosting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105584371A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400707A (en) * | 2018-05-16 | 2018-08-14 | 珠海市三森电子科技有限公司 | A kind of DC power converter and its working method |
| CN108953835A (en) * | 2017-11-22 | 2018-12-07 | 深圳市博铭维智能科技有限公司 | A kind of detecting robot of pipe system |
| CN116054307A (en) * | 2022-07-27 | 2023-05-02 | 荣耀终端有限公司 | Power supply control system and electronic equipment |
| CN116131590A (en) * | 2023-04-14 | 2023-05-16 | 北京理工大学 | High-safety power supply device for booster circuit |
-
2014
- 2014-10-18 CN CN201410558035.7A patent/CN105584371A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953835A (en) * | 2017-11-22 | 2018-12-07 | 深圳市博铭维智能科技有限公司 | A kind of detecting robot of pipe system |
| CN108400707A (en) * | 2018-05-16 | 2018-08-14 | 珠海市三森电子科技有限公司 | A kind of DC power converter and its working method |
| CN108400707B (en) * | 2018-05-16 | 2024-03-26 | 珠海市三森电子科技有限公司 | DC power supply converter and working method thereof |
| CN116054307A (en) * | 2022-07-27 | 2023-05-02 | 荣耀终端有限公司 | Power supply control system and electronic equipment |
| CN116054307B (en) * | 2022-07-27 | 2023-10-20 | 荣耀终端有限公司 | Power supply control system and electronic equipment |
| CN116131590A (en) * | 2023-04-14 | 2023-05-16 | 北京理工大学 | High-safety power supply device for booster circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102771039A (en) | Dc/dc power conversion device | |
| CN105584371A (en) | Car power supply system with pressure-boosting function | |
| CN205070791U (en) | Switching power supply from supply circuit | |
| CN104571433A (en) | Vehicular computer power supply and surge voltage suppression method thereof | |
| CN103226369A (en) | Power circuit | |
| CN105141132A (en) | Time-sharing power supply control circuit | |
| CN102694471B (en) | Auxiliary power supply system for photovoltaic inverter | |
| CN108092395B (en) | Back-up battery cut-in and float charging control device | |
| US8775829B2 (en) | Single phase line switch | |
| CN105515081A (en) | Stable output type car power supply system | |
| CN104682702A (en) | Power circuit and electronic product | |
| CN104467394A (en) | Circuit assisting power starting and voltage detecting and controlling method | |
| CN205453496U (en) | Chip mounter equipment's power supply circuit | |
| CN204119029U (en) | A kind of voltage conversion circuit based on boosted switch transducer | |
| CN207853760U (en) | A kind of major-minor low-tension supply for electric machine controller master control borad | |
| CN204119033U (en) | A kind of decompression converting circuit based on linear voltage regulator | |
| CN203660640U (en) | Economical power failure maintenance circuit | |
| CN105515082A (en) | Stable output automotive power supply system | |
| CN205070792U (en) | Switching power supply from supply circuit | |
| CN103151923A (en) | Voltage stabilizer | |
| CN210867513U (en) | Power supply framework of electric control unit | |
| TWI513160B (en) | Power supply system and its DC converter | |
| CN216069619U (en) | Power supply system based on hybrid power controller | |
| CN209299141U (en) | A kind of adjustable voltage converter | |
| CN207504762U (en) | A kind of anti-drop DC-DC booster circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |