CN109861375A - Double-power supply switching device and automobile - Google Patents
Double-power supply switching device and automobile Download PDFInfo
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- CN109861375A CN109861375A CN201910104689.5A CN201910104689A CN109861375A CN 109861375 A CN109861375 A CN 109861375A CN 201910104689 A CN201910104689 A CN 201910104689A CN 109861375 A CN109861375 A CN 109861375A
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- power source
- input terminal
- double
- output end
- power supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Stand-By Power Supply Arrangements (AREA)
Abstract
The present invention discloses a kind of double-power supply switching device and automobile, the double-power supply switching device is applied to automobile, the automobile has main power source and backup power source, double-power supply switching device includes for the main power source input terminal, backup power source input terminal, switching circuit and the power output end for connecting with backup power source that connect with main power source, and the controlled end of power output end and switching circuit is connect with main power source input terminal respectively；The input terminal of switching circuit is connect with backup power source input terminal, and the output end of switching circuit is connect with power output end；Switching circuit, for open-minded in main power source input terminal non-transformer voltage input, control backup power source is exported to power output end, the shutdown when main power source input terminal has supply voltage input, and cutting backup power source is exported to power output end.Technical solution of the present invention simplifies the circuit of vehicle-mounted product double-power supply switching device, reduces costs.
Description
Technical field
The present invention relates to power technique fields, in particular to a kind of double-power supply switching device and automobile.
Background technique
With the continuous development of mobile unit, mobile unit type increases, and consumption power is increasing, to guarantee vehicle fortune
Enough electric energy continuously, reliably and securely can be provided to mobile unit when row, each auto vendor proposes dual power supply mould
Formula is set that is, using main power source (automobile external power supply) and backup power source (automotive interior battery) duplicate supply with meeting onboard electrical
Standby power reguirements are all that vehicle-mounted product work, the standby electricity after main power source disconnection are maintained by main power source power supply under normal circumstances
Source, which can just enable, continues to vehicle-mounted product work, therefore just needs the circuit of an energy auto switching electric source, and vehicle-mounted product
Upper traditional double supply automatic switch-over circuit forms switching circuit by multiple contactors and relay and switches over, and circuit compares
Complexity, occupies very big PCB surface product, and cost is relatively high.
Summary of the invention
The main object of the present invention is to propose a kind of double-power supply switching device and automobile, it is intended to simplify vehicle-mounted product dual power supply
The circuit of switching device, reduces cost.
To achieve the above object, double-power supply switching device proposed by the present invention, is applied to automobile, and the automobile has main electricity
Source and backup power source, the double-power supply switching device include for connect with the main power source main power source input terminal, for it is described
Backup power source input terminal, switching circuit and the power output end of backup power source connection,
The controlled end of the power output end and the switching circuit is connect with the main power source input terminal respectively；
The input terminal of the switching circuit is connect with the backup power source input terminal, the output end of the switching circuit and institute
State power output end connection；
The switching circuit, for open-minded in the main power source input terminal non-transformer voltage input, control is described spare
Power supply is exported to the power output end, the shutdown when the main power source input terminal has supply voltage input, is cut off described spare
Power supply is exported to the power output end.
Optionally, the switching circuit is PMOS tube, and the controlled end of the switching circuit is the grid of PMOS tube, described to open
The input terminal on powered-down road is the drain electrode of PMOS tube, and the output end of the switching circuit is the source electrode of the PMOS tube.
Optionally, the double-power supply switching device further includes one-way conduction circuit, the input terminal of the one-way conduction circuit
It is connect respectively with the controlled end of the main power source input terminal and the switching circuit, the output end of the one-way conduction circuit and institute
State power output end connection.
Optionally, the one-way conduction circuit is first diode, and the input terminal of the one-way conduction circuit is described the
The anode of one diode, the output end of the one-way conduction circuit are the cathode of the first diode.
Optionally, the double-power supply switching device further includes first resistor, and the first end of the first resistor is connected to institute
It states between the controlled end of switching circuit and the input terminal of the one-way conduction circuit, the second end ground connection of the first resistor.
The present invention also proposes that a kind of automobile, the automobile include that main power source, backup power source and dual power supply as described above are cut
Changing device, the double-power supply switching device include for connect with the main power source main power source input terminal, for the standby electricity
Backup power source input terminal, switching circuit and the power output end of source connection,
The controlled end of the power output end and the switching circuit is connect with the main power source input terminal respectively；
The input terminal of the switching circuit is connect with the backup power source input terminal, the output end of the switching circuit and institute
State power output end connection；
The main power source connects the main power source input terminal of the double-power supply switching device, and the backup power source connection is described double
The backup power source input terminal of power transfer device.
Optionally, the automobile is electric car, and the main power source is for providing driving energy to the electric car
Battery.
Optionally, the backup power source is nickel-metal hydride battery.
Technical solution of the present invention has main power source and backup power source by using automobile, and the double-power supply switching device includes
For main power source input terminal, the backup power source input terminal for being connect with the backup power source, switch electricity being connect with the main power source
The controlled end of road and power output end, the power output end and the switching circuit connects with the main power source input terminal respectively
It connects；The input terminal of the switching circuit is connect with the backup power source input terminal, the output end of the switching circuit and the electricity
Source output terminal connection；The switching circuit, for open-minded in the main power source input terminal non-transformer voltage input, described in control
Backup power source is exported to the power output end, the shutdown when the main power source input terminal has supply voltage input, described in cutting
Backup power source is exported to the power output end, reaches switching circuit to cutting between main power source and backup power source automatically with this
It changes, is using switching circuit to the automatic switchover between automobile external main power source and internal backup power source, so that on automobile
Vehicle-mounted product works normally always, realizes the circuit for simplifying vehicle-mounted product double-power supply switching device, reduces costs.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the electrical block diagram of one embodiment of double-power supply switching device of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Main power source input terminal | R1 | First resistor |
| 200 | Backup power source input terminal | D1 | First diode |
| 300 | Power output end | Q1 | PMOS tube |
The realization of the object of the invention, functional characteristics and it can put that the embodiments will be further described with reference to the accompanying drawings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of double-power supply switching device, is applied to automobile, and the automobile has main power source and backup power source.
In an embodiment of the present invention, as shown in Figure 1, the double-power supply switching device includes for connecting with the main power source
Main power source input terminal 100, backup power source input terminal 200, switching circuit and power output end for being connect with the backup power source
300,
The controlled end of the power output end 300 and the switching circuit is connect with the main power source input terminal 100 respectively；
The input terminal of the switching circuit is connect with the backup power source input terminal 200, the output end of the switching circuit
It is connect with the power output end 300；
The switching circuit, for open-minded in the 100 non-transformer voltage input of main power source input terminal, control is described standby
It is exported with power supply to the power output end 300, the shutdown when the main power source input terminal 100 has supply voltage input, is cut off
The backup power source is exported to the power output end 300.
In the present embodiment, switching circuit is switching circuit to vapour to the automatic switchover between main power source and backup power source
Automatic switchover outside vehicle between main power source and internal backup power source, when automobile external main power source does not have power input, switch
The controlled end of circuit is low level, and switching circuit is open-minded, controls internal backup power source by switching circuit and is output to power supply output
End 300, for the normal work of vehicle-mounted product, when automobile external main power source has power input, the controlled end of switching circuit is
High level, switching circuit shutdown cut-off, prevent internal backup power source is from being at this time automobile external main power source by switching circuit
It is directly output to power output end 300, so that the vehicle-mounted product on automobile works normally.It is understood that automobile external master
Power supply is for providing the battery of driving energy to automobile, and internal backup power source will not open under normal circumstances in automobilism
With, only external main power source disconnection after just enable, so that automobile mounted product works normally always.
Further, the switching circuit is PMOS tube Q1, and the controlled end of the switching circuit is the grid of PMOS tube Q1,
The input terminal of the switching circuit is the drain electrode of PMOS tube Q1, and the output end of the switching circuit is the source of the PMOS tube Q1
Pole.
In the present embodiment, all it is the work for maintaining vehicle-mounted product by main power source power supply under normal circumstances, works as automobile external
When main power source does not input, the grid G of PMOS tube Q1 is 0V, and PMOS tube Q1 is connected, and backup power source passes through PMOS tube Q1's
Drain D, source S export VBAT voltage, due to being nearly free from pressure drop when PMOS tube Q1 conducting, so actual test
The voltage of VBAT is equal to the cell voltage of backup power source；When the input of automobile external main power source, the grid G of PMOS tube Q1 is high electricity
Flat, the voltage of grid G is far longer than 0V, the drain D of PMOS tube Q1, source S cut-off, the cell voltage shutdown of backup power source, master
Power supply is powered by first diode D1 to VBAT, and for powering to vehicle-mounted product, the battery of backup power source is no longer powered at this time.
It is understood that power output end 300 herein is the power supply signal for being output to vehicle-mounted product, the master of automobile can be passed through
Power supply and backup power source output to vehicle-mounted product to power；VBAT voltage is cell voltage, is due to PMOS tube Q1 conducting resistance
Very small, almost without pressure drop when place is connected, the cell voltage of backup power source and the supply voltage for being output to vehicle-mounted product are complete
It is complete consistent, it that is to say that the voltage of power output end 300 can be close to cell voltage, what is be not lost is output to vehicle-mounted production
Product.
Technical solution of the present invention has main power source and backup power source by using automobile, and the double-power supply switching device includes
For connect with the main power source main power source input terminal 100, for connect with the backup power source backup power source input terminal 200,
The controlled end of switching circuit and power output end 300, the power output end 300 and the switching circuit respectively with the main electricity
Source input terminal 100 connects；The input terminal of the switching circuit is connect with the backup power source input terminal 200, the switching circuit
Output end connect with the power output end 300；The switching circuit, in 100 non-transformer of main power source input terminal
It is open-minded when voltage input, it controls the backup power source and exports to the power output end 300, in the main power source input terminal 100
Shutdown when having supply voltage input is cut off the backup power source and is exported to the power output end 300, reaches switching circuit with this
It is using switching circuit to automobile external main power source and internal standby electricity to the automatic switchover between main power source and backup power source
Automatic switchover between source realizes simplified vehicle-mounted product dual power supply and cuts so that the vehicle-mounted product on automobile works normally always
The circuit of changing device, reduces costs.
In one embodiment, the double-power supply switching device further includes one-way conduction circuit, the one-way conduction circuit
Input terminal is connect with the controlled end of the main power source input terminal 100 and the switching circuit respectively, the one-way conduction circuit
Output end is connect with the power output end 300.
In the present embodiment, the one-way conduction circuit is first diode D1, and the input terminal of the one-way conduction circuit is
The anode of the first diode D1, the output end of the one-way conduction circuit are the cathode of the first diode D1, so that
After the main power source of automobile disconnects, the voltage of backup power source will not flow back to main power source, and realizing prevents automobile standby power supply
Voltage flows backward into the circuit of main power source.
In one embodiment, as shown in Figure 1, the double-power supply switching device further includes first resistor R1, first electricity
The first end of resistance R1 is connected between the controlled end of the switching circuit and the input terminal of the one-way conduction circuit, and described first
The second end of resistance R1 is grounded, it is to be understood that first resistor R1 herein is closed in circuit drives as pull down resistor
When to circuit with a fixed level.
The present invention also proposes a kind of automobile, which includes main power source, backup power source and dual power supply as described above switching
Device, the main power source connect the main power source input terminal 100 of the double-power supply switching device, and the backup power source connection is described double
The backup power source input terminal 200 of power transfer device.Specific structure reference above-described embodiment of the double-power supply switching device, due to
Automobile uses whole technical solutions of above-mentioned all embodiments, therefore at least the technical solution with above-described embodiment is brought
All beneficial effects, this is no longer going to repeat them.
In the present embodiment, the automobile is electric car, and the main power source is for providing driving to the electric car
The battery of energy that is to say that the main power source is electric car power supply storage battery, and the backup power source is nickel-metal hydride battery, Ke Yili
Solution, the backup power source are also possible to nickel-cadmium cell, lead storage battery etc., herein without limitation.
The foregoing is merely alternative embodiments of the invention, are not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (8)
1. a kind of double-power supply switching device, is applied to automobile, the automobile has main power source and backup power source, which is characterized in that
The double-power supply switching device includes supplying the main power source input terminal connecting with the main power source, for connecting with the backup power source
Backup power source input terminal, switching circuit and power output end,
The controlled end of the power output end and the switching circuit is connect with the main power source input terminal respectively；
The input terminal of the switching circuit is connect with the backup power source input terminal, the output end of the switching circuit and the electricity
Source output terminal connection；
The switching circuit controls the backup power source for open-minded in the main power source input terminal non-transformer voltage input
To the power output end, the backup power source is cut off in the shutdown when the main power source input terminal has supply voltage input for output
It exports to the power output end.
2. double-power supply switching device as described in claim 1, which is characterized in that the switching circuit is PMOS tube, described to open
The controlled end on powered-down road is the grid of PMOS tube, and the input terminal of the switching circuit is the drain electrode of PMOS tube, the switching circuit
Output end be the PMOS tube source electrode.
3. double-power supply switching device as described in claim 1, which is characterized in that the double-power supply switching device further includes unidirectional
Turning circuit, the input terminal of the one-way conduction circuit controlled end with the main power source input terminal and the switching circuit respectively
Connection, the output end of the one-way conduction circuit are connect with the power output end.
4. double-power supply switching device as claimed in claim 3, which is characterized in that the one-way conduction circuit is the one or two pole
Pipe, the input terminal of the one-way conduction circuit are the anode of the first diode, and the output end of the one-way conduction circuit is
The cathode of the first diode.
5. double-power supply switching device as claimed in claim 3, which is characterized in that the double-power supply switching device further includes first
Resistance, the first end of the first resistor are connected to the controlled end of the switching circuit and the input terminal of the one-way conduction circuit
Between, the second end of the first resistor is grounded.
6. a kind of automobile, which is characterized in that the automobile includes main power source, backup power source and any one of such as claim 1-5
The double-power supply switching device, the main power source connects the main power source input terminal of the double-power supply switching device, described spare
Power supply connects the backup power source input terminal of the double-power supply switching device.
7. automobile as claimed in claim 6, which is characterized in that the automobile is electric car, and the main power source is for giving
The electric car provides the battery of driving energy.
8. automobile as claimed in claim 7, which is characterized in that the backup power source is nickel-metal hydride battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104689.5A CN109861375A (en) | 2019-02-01 | 2019-02-01 | Double-power supply switching device and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104689.5A CN109861375A (en) | 2019-02-01 | 2019-02-01 | Double-power supply switching device and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109861375A true CN109861375A (en) | 2019-06-07 |
Family
ID=66897509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910104689.5A Pending CN109861375A (en) | 2019-02-01 | 2019-02-01 | Double-power supply switching device and automobile |
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| Country | Link |
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| CN (1) | CN109861375A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113497477A (en) * | 2021-06-25 | 2021-10-12 | 际络科技(上海)有限公司 | Automatic-driving dual-power-supply control system and method |
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| CN202178607U (en) * | 2011-08-11 | 2012-03-28 | 深圳长城开发科技股份有限公司 | Handheld device and battery and external power source power supply switching circuit thereof |
| CN204316176U (en) * | 2014-12-18 | 2015-05-06 | 陕西赛雷博瑞新能源科技有限公司 | A kind of management system of dual power supply |
| CN208257500U (en) * | 2018-05-31 | 2018-12-18 | 长春汇通光电技术有限公司 | A kind of encoder power supply management circuit |
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2019
- 2019-02-01 CN CN201910104689.5A patent/CN109861375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202178607U (en) * | 2011-08-11 | 2012-03-28 | 深圳长城开发科技股份有限公司 | Handheld device and battery and external power source power supply switching circuit thereof |
| CN204316176U (en) * | 2014-12-18 | 2015-05-06 | 陕西赛雷博瑞新能源科技有限公司 | A kind of management system of dual power supply |
| CN208257500U (en) * | 2018-05-31 | 2018-12-18 | 长春汇通光电技术有限公司 | A kind of encoder power supply management circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113497477A (en) * | 2021-06-25 | 2021-10-12 | 际络科技(上海)有限公司 | Automatic-driving dual-power-supply control system and method |
| CN113497477B (en) * | 2021-06-25 | 2022-11-01 | 际络科技(上海)有限公司 | Automatic-driving dual-power-supply control system and method |
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Application publication date: 20190607 |