CN107745689A - Vehicle-mounted emergency electric system and motor vehicle - Google Patents
Vehicle-mounted emergency electric system and motor vehicle Download PDFInfo
- Publication number
- CN107745689A CN107745689A CN201711021891.9A CN201711021891A CN107745689A CN 107745689 A CN107745689 A CN 107745689A CN 201711021891 A CN201711021891 A CN 201711021891A CN 107745689 A CN107745689 A CN 107745689A
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- Prior art keywords
- voltage
- vehicle
- relay
- electric system
- mounted emergency
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
Abstract
A kind of vehicle-mounted emergency electric system of the present invention and motor vehicle, the motor vehicle include the main battery that output voltage is first voltage grade, and the vehicle-mounted emergency electric system includes：Reserve battery, detection unit, the first relay, voltage conversion unit and the first output interface.The vehicle-mounted emergency electric system detects the voltage of the main battery of motor vehicle in itself by the detection unit, it can be powered to voltage conversion unit by the reserve battery in the case of the main battery not enough power supply, exported after converting electrical energy into electrical equipment required voltage grade by the voltage conversion unit.In this way, avoiding the multiple conversions of electric energy, and electric energy output can be persistently provided under motor vehicle flameout state.
Description
Technical field
The present invention relates to vehicle arrangement technical field, in particular to a kind of vehicle-mounted emergency electric system and motor vehicle.
Background technology
With the development and popularization of information technology, all kinds of electrical equipments used on motor vehicle are also more and more, existing big
Most electrical equipments need dc source to power, and it needs the dc source that DC voltage level may provide in itself with motor vehicle
Voltage class is not inconsistent.Existing Normal practice be the direct current output that motor vehicle provides is converted into through inverter 220V exchange it is defeated
Go out, then 220V exchange output is converted to the direct current output of electrical equipment grade of rated voltage.Multiple conversions cause electric energy to turn
It is low to change efficiency, and because inverter is in itself without battery, automobile engine needs to work always, could be maintained in parking to
Electrical equipment exports electric energy, and long-time slow-speed of revolution operation can damage engine.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, it is an object of the invention to provide a kind of vehicle-mounted stand-by power supply system
System, applied to motor vehicle, the motor vehicle includes the main battery that output voltage is first voltage grade, the vehicle-mounted standby confession
Electric system includes：Reserve battery, detection unit, the first relay, voltage conversion unit and the first output interface；
First control contact of first relay is connected with the positive pole of the main battery, the second control contact and institute
The positive pole connection of reserve battery is stated, coil contact is connected with the detection unit；
The detection port of the detection unit is connected with the main battery, for detecting the current electricity of the main battery
Pressure value；When the voltage for detecting the main battery is higher than the first predetermined voltage threshold, the of first relay is controlled
One control contact turns on the second control contact；It is less than the second predetermined voltage threshold in the voltage for detecting the main battery
When, the first control contact and the second control contact that control first relay disconnect；First predetermined voltage threshold is big
In second predetermined voltage threshold；
The of the positive pole of the electrode input end of the voltage conversion unit and the reserve battery or first relay
Two control contact portions, the negative input ground connection of the voltage conversion unit；The voltage conversion unit is used for the master
The electric energy of the first voltage grade exported with battery or reserve battery is converted to the electric energy of second voltage grade；The reserve battery
Negative pole ground connection；
The electrode input end and negative input of first output interface positive pole with the voltage conversion unit respectively
Output end connects with cathode output end, and the output end of first output interface is used for other vehicle-mounted load output second voltages
The electric energy of grade.
Further, in above-mentioned vehicle-mounted emergency electric system, the detection unit is detecting the main battery
When voltage is higher than the first predetermined voltage threshold, the first control contact and the second control contact that control first relay are led
It is logical；
The detection unit is when the voltage for detecting the main battery is less than the second predetermined voltage threshold, described in control
First control contact of the first relay disconnects simultaneously with the second control contact；
The detection unit is detecting the voltage of the main battery between first predetermined voltage threshold and second
When between predetermined voltage threshold, first relay is controlled to keep current state.
Further, in above-mentioned vehicle-mounted emergency electric system, the first voltage grade is 12V, the second voltage
Grade is 48V.
Further, in above-mentioned vehicle-mounted emergency electric system, the first voltage grade is 12V, and described first is default
Voltage threshold is 13.3V, and second predetermined voltage threshold is 12.7V.
Further, in above-mentioned vehicle-mounted emergency electric system, first relay is normally opened relay, the detection
Unit is also connected with the enabling signal port of motor vehicle；
When the motor vehicle is in starting state, detection unit work since the enabling signal port obtains electric energy
Make, first relay is controlled according to the voltage of the main battery；
When the motor vehicle is in non-started state, the detection unit dead electricity does not work, not to first relay
It is controlled, first relay maintains off-state.
Further, in above-mentioned vehicle-mounted emergency electric system, the vehicle-mounted emergency electric system is also shown including voltage
Unit；
The positive pole of the voltage display unit is connected with the positive pole of the reserve battery, and the voltage display unit negative pole connects
Ground, the voltage display unit are used to detect and show the voltage of the reserve battery.
Further, in above-mentioned vehicle-mounted emergency electric system, the vehicle-mounted emergency electric system also includes first manual
Switch；The first manual switch includes the first button and the second relay；
Second relay is arranged at the output end of the voltage conversion unit and the input of first output interface
Between end, for according to the state of first button control the voltage conversion unit connected with first output interface or
Disconnect；
First button is arranged at the console of the motor vehicle.
Further, in above-mentioned vehicle-mounted emergency electric system, the vehicle-mounted emergency electric system also includes the second output
Interface；
The electrode input end of second output interface is connected with the positive pole of the reserve battery, second output interface
Negative input ground connection, the output end of second output interface is used to export first voltage grades to other vehicle-mounted loads
Electric energy.
Further, in above-mentioned vehicle-mounted emergency electric system, it is manual that the vehicle-mounted emergency electric system also includes second
Switch；Second hand switch includes the second button and the 3rd relay；
3rd relay is arranged at the positive pole of the reserve battery and the electrode input end of second output interface
Between, for controlling the reserve battery to be switched on or switched off with second output interface according to the state of second button；
Second button is arranged at the console of the motor vehicle.
Another object of the present invention is to provide a kind of motor vehicle, it is first voltage etc. that the motor vehicle, which includes output voltage,
The main battery and the vehicle-mounted emergency electric system provided by the invention of level.
In terms of existing technologies, the invention has the advantages that：
Vehicle-mounted emergency electric system and motor vehicle provided by the invention, by detection unit detection motor vehicle in itself
The voltage of main battery, can be by the reserve battery to voltage conversion list in the case of the main battery not enough power supply
Member power supply, is exported after converting electrical energy into electrical equipment required voltage grade by the voltage conversion unit.In this way, avoid
The multiple conversions of electric energy, and electric energy output can be persistently provided under motor vehicle flameout state.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is one of vehicle-mounted emergency electric system schematic diagram provided in an embodiment of the present invention；
Fig. 2 is the two of vehicle-mounted emergency electric system schematic diagram provided in an embodiment of the present invention；
Fig. 3 is detection unit control logic schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the three of vehicle-mounted emergency electric system schematic diagram provided in an embodiment of the present invention.
Icon：The vehicle-mounted emergency electric systems of 100-；111- detection units；112- reserve batteries；The relays of 113- first；
114- voltage conversion units；The output interfaces of 115- first；116- charge and discharge protecting modules；117- voltage display units；1181-
One button；The relays of 1182- second；The output interfaces of 119- second；The buttons of 1201- second；The relays of 1202- the 3rd；211- master
Use battery；212- generators；213- enabling signals port.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to which explanation, term " first ", " second ", " the 3rd " etc. are only used for differentiation and retouched
State, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Fig. 1 is refer to, Fig. 1 is the schematic diagram for the vehicle-mounted emergency electric system 100 that present pre-ferred embodiments provide, described
Vehicle-mounted emergency electric system 100 is applied to the motor vehicle, and the motor vehicle includes the master that output voltage is first voltage grade
With battery 211.The vehicle-mounted emergency electric system 100 includes detection unit 111, reserve battery 112, the first relay 113, electricity
Press the output interface 115 of converting unit 114 and first.
In the present embodiment, the first voltage grade is 12V, the positive pole of the main battery 211 also with it is described motor-driven
The generator 212 of car connects, and can be the main battery by the generator 212 under the motor vehicle starting state
211 chargings.
First control contact of first relay 113 is connected with the positive pole of the main battery 211, and the second control is touched
Point is connected with the positive pole of the reserve battery 112, and coil contact is connected with the detection unit 111.
In the present embodiment, first relay 113 can be normally opened relay, and rated through-current ability is more than
200A, the control voltage of its coil contact is 12V.When the coil contact obtains electric, the first control contact and described second
Contacting is controlled, during the coil contact dead electricity, the first control contact disconnects with the described second control contact.
Second control contact portion of the positive pole of the reserve battery 112 and first relay 113, negative pole ground connection.
Can be described by the generator 212 of the motor vehicle when the described first control contact is with the described second control contacting
Reserve battery 112 charges.
Alternatively, in the present embodiment, the reserve battery 112 can be in series by 4 monomer ferric phosphate lithium cells,
The nominal voltage 12.8V of the reserve battery 112, maximum charge limitation voltage 14.6V, minimum electric discharge limit voltage 8V, capacity
For 12V/80AH.
Further, Fig. 2 is refer to, in the present embodiment, the vehicle-mounted emergency electric system 100, which also includes discharge and recharge, to be protected
Shield module 116 described in charge and discharge protecting module 116 be connected to first relay 113 second control contact with it is described standby
Between battery 112.
The charge and discharge protecting module 116 can control metal-oxide-semiconductor and MCU to form by input and output, and it is maximum that it sets battery
Charging and discharging electric current is 100A, charge cutoff voltage 14.5V, discharge cut-off voltage 10V, with to the reserve battery
112 carry out charge and discharge protecting.
The detection port of the detection unit 111 is connected with the main battery 211, for detecting the main battery
211 current voltage value.The voltage of the main battery 211 can reflect its electricity, when the electricity of main battery 211 is sufficient
When, its magnitude of voltage is higher, and when 211 not enough power supply of main battery, its magnitude of voltage is relatively low.The basis of detection unit 111
Coil contact output control signal from the current magnitude of voltage of the main battery 211 to first relay 113, to control
State the first control contact and the second control contacting or the disconnection of the first relay 113.
Positive pole or first relay of the electrode input end of the voltage conversion unit 114 with the reserve battery 112
Second control contact portion of device 113, the negative input ground connection of the voltage conversion unit 114.The voltage conversion unit
The electric energy of the 114 first voltage grades for being used to export the main battery 211 or reserve battery 112 is converted to second voltage etc.
The electric energy of level.In the present embodiment, the second voltage grade can be 48V, the input voltage of the voltage conversion unit 114
9~18V is may range from, output voltage can be 48V, and power output can be 300W.
When the first control contact of first relay 113 is with the second control contacting, the voltage conversion list
Member 114 can obtain electric energy from the main battery 211 or the reserve battery 112.The of first relay 113
When one control contact is with the second control contacting, the voltage conversion unit 114 can obtain electricity from the reserve battery 112
Energy.
The electrode input end and negative input of first output interface 115 respectively with the voltage conversion unit 114
Cathode output end connected with cathode output end, the output end of first output interface 115 is used for defeated to other vehicle-mounted loads
Go out the electric energy of second voltage grade.
Based on above-mentioned design, disconnected even in first relay 113, the main battery 211 is not to the voltage
In the case that converting unit 114 exports electric energy, it can be provided by the reserve battery 112 to the voltage conversion unit 114
Lasting electric energy.
In the present embodiment, design in the 211 electricity abundance of main battery, first relay can be connected
113, provide electric energy from the main battery 211 to the voltage conversion unit 114.In the not enough power supply of main battery 211
When, first relay 113 can be disconnected, electric energy is provided from the reserve battery 112 to the voltage conversion unit 114.
Specifically, in the present embodiment, the detection unit 111 is higher than in the voltage for detecting the main battery 211
During the first predetermined voltage threshold, the first control contact of first relay 113 is controlled to be turned on the second control contact.Examining
When measuring the voltage of the main battery 211 and being less than the second predetermined voltage threshold, the first control of first relay 113 is controlled
Contact processed disconnects with the second control contact.Wherein, first predetermined voltage threshold is more than second predetermined voltage threshold；
Further, in order to prevent the voltage of the main battery 211 when threshold limit value fluctuates, first relay
113 break-makes repeatedly, therefore in the present embodiment, Fig. 3 is refer to, the detection unit 111 is detecting the main battery 211
When voltage is higher than the first predetermined voltage threshold, the first control contact and the second control contact of first relay 113 are controlled
Conducting.Wherein, first predetermined voltage threshold could be arranged to 13.3V, and the detection unit 111 controls first relay
The first of device 113 controls contact to control the mode that contact turns on second to export 12V voltages to the coil contact.
The detection unit 111 is when the voltage for detecting the main battery 211 is less than the second predetermined voltage threshold, control
The the first control contact and the second control contact for making first relay 113 disconnect.Wherein, second predetermined voltage threshold
It could be arranged to 12V.The detection unit 111 controls the first of first relay 113 to control contact to be touched with the second control
The mode that point disconnects is to export 0V voltages to the coil contact.
The detection unit 111 is detecting the voltage of the main battery 211 between first predetermined voltage threshold
When between the second predetermined voltage threshold, first relay 113 is controlled to keep current state.
In this way, the first relay 113 can connected it is determined that during 211 electricity abundance of the main battery.It is determined that
During 211 not enough power supply of main battery, disconnect the first relay 113, prevent when voltage critical point fluctuates, described first after
Break-make causes circuit unstable to electrical equipment 113 repeatedly.
Further, can also be with the enabling signal port 213 of motor vehicle referring once again to Fig. 2, the detection unit 111
Connection.When the motor vehicle is in starting state, the detection unit 111 obtains electric energy from the enabling signal port 213 and opened
Beginning work, first relay 113 is controlled according to the voltage of the main battery 211.
When the motor vehicle is in non-started state, the dead electricity of detection unit 111 does not work, not to first relay
The coil contact power transmission of device 113, i.e., be not controlled to first relay 113.Now, due to first relay
113 be normally opened relay, and off-state is maintained in the case of its coil contact dead electricity.The main battery 211 of detection unit 111
The voltage conversion unit 114 of one relay, 113 211 reserve battery of detection unit 111 first relay, 113 main battery 112 in this way,
The transient discharge of main battery 211 when the motor vehicle does not start is prevented, causes the motor vehicle needing to start
The not enough power supply of Shi Suoshu main batteries 211, can not strike sparks startup.
Further, voltage display unit 117 is also included referring once again to Fig. 2, the vehicle-mounted emergency electric system 100.
The positive pole of the voltage display unit 117 is connected with the positive pole of the reserve battery 112, the voltage display unit
117 negative poles are grounded, and the voltage display unit 117 is used to detect and show the voltage of the reserve battery 112.In this way, user
The charge condition of the reserve battery 112 can be easily known from console.
Further, referring once again to Fig. 2, the vehicle-mounted emergency electric system 100 also includes first manual and switched；It is described
First manual switch includes the first button 1181 and the second relay 1182.Second relay 1182 is arranged at the voltage
Between the input of the output end of converting unit 114 and first output interface 115, for according to first button 1181
State control the voltage conversion unit 114 to be switched on or switched off with first output interface 115.First button 1181
It is arranged at the console of the motor vehicle.
In the present embodiment, first manual switch can be self-lock switch, and first button 1181 is connected after being pressed
And self-locking, control second relay 1182 to be continuously turned on, first button 1181 recovers to disconnect after being depressed again, control
Second relay 1182 is made to disconnect.Second relay 1182 can be normally opened relay, and input control voltage is
12V, specified conveyance capacity are 20A.
Further, Fig. 4 is refer to, the vehicle-mounted emergency electric system 100 also includes the second output interface 119.
The electrode input end of second output interface 119 is connected with the positive pole of the reserve battery 112, and described second is defeated
The negative input ground connection of outgoing interface 119, the output end of second output interface 119 are used for other vehicle-mounted load outputs the
The electric energy of one voltage class.In this way, voltage of the vehicle-mounted emergency electric system 100 except that can export 48V, equally can also
12V voltage is exported, to meet the needs of various different electrical equipments.
Further, referring once again to Fig. 4, the vehicle-mounted emergency electric system 100 also includes the second hand switch, described
Second hand switch includes the second button 1201 and the 3rd relay 1202.3rd relay 1202 is arranged at described standby
Between the electrode input end of the positive pole of battery 112 and second output interface 119, for according to second button 1201
State controls the reserve battery 112 to be switched on or switched off with second output interface 119.Second button 1201 is arranged at
The console of the motor vehicle.
In the present embodiment, the second hand switch can be self-lock switch, and second button 1201 is connected after being pressed
And self-locking, to control the 3rd relay 1202 to be continuously turned on, second button 1201 is replied after being depressed again to be disconnected,
To control the 3rd relay 1202 to disconnect.3rd relay 1202 can be normally opened relay, input control voltage
For 12V, specified conveyance capacity is 100A.
The present embodiment also provides a kind of motor vehicle, and the motor vehicle includes the primary electricity that output voltage is first voltage grade
The vehicle-mounted emergency electric system 100 that pond 211 and the present embodiment provide.
In summary, vehicle-mounted emergency electric system 100 and motor vehicle provided by the invention, pass through the detection unit 111
The voltage of the main battery 211 of motor vehicle in itself is detected, can pass through institute in the case of the not enough power supply of main battery 211
State reserve battery 112 to power to voltage conversion unit 114, electrical equipment is converted electrical energy into by the voltage conversion unit 114
Exported after required voltage grade.In this way, avoiding the multiple conversions of electric energy, and can persistently be carried under motor vehicle flameout state
Power supply can export.
In embodiment provided herein, it should be understood that disclosed apparatus and method, can also be by other
Mode realize.Device embodiment described above is only schematical, for example, the flow chart and block diagram in accompanying drawing are shown
According to the device, the architectural framework in the cards of method and computer program product, function of multiple embodiments of the present invention
And operation.At this point, each square frame in flow chart or block diagram can represent one of a unit, program segment or code
Point, a part for the unit, program segment or code includes one or more and is used to realize the executable of defined logic function
Instruction.It should also be noted that at some as in the implementation replaced, the function of being marked in square frame can also be with different from attached
The order marked in figure occurs.For example, two continuous square frames can essentially perform substantially in parallel, they also may be used sometimes
To perform in the opposite order, this is depending on involved function.It is it is also noted that each in block diagram and/or flow chart
The combination of square frame and the square frame in block diagram and/or flow chart, can use function or action as defined in performing it is special based on
The system of hardware is realized, or can be realized with the combination of specialized hardware and computer instruction.
In addition, each functional unit in each embodiment of the present invention can integrate to form an independent portion
Point or unit individualism, can also two or more units be integrated to form an independent part.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of vehicle-mounted emergency electric system, applied to motor vehicle, it is characterised in that the motor vehicle includes output voltage for the
The main battery of one voltage class, the vehicle-mounted emergency electric system include：Reserve battery, detection unit, the first relay, electricity
Press converting unit and the first output interface；
First control contact of first relay is connected with the positive pole of the main battery, and the second of first relay
Control contact is connected with the positive pole of the reserve battery, and the coil contact of first relay is connected with the detection unit；
The detection port of the detection unit is connected with the main battery, for detecting the current voltage of the main battery
Value；When the voltage for detecting the main battery is higher than the first predetermined voltage threshold, the first of first relay is controlled
Control contact turns on the second control contact；When the voltage for detecting the main battery is less than the second predetermined voltage threshold,
The first of first relay is controlled to control contact to be disconnected with the second control contact；First predetermined voltage threshold is more than institute
State the second predetermined voltage threshold；
Second control of the electrode input end of the voltage conversion unit and the positive pole or first relay of the reserve battery
Contact portion processed, the negative input ground connection of the voltage conversion unit；The voltage conversion unit is used for the primary electricity
The electric energy of the first voltage grade of pond or reserve battery output is converted to the electric energy of second voltage grade；The reserve battery is born
Pole is grounded；
The electrode input end and negative input of first output interface export with the positive pole of the voltage conversion unit respectively
End connects with cathode output end, and the output end of first output interface is used for other vehicle-mounted load output second voltage grades
Electric energy.
2. vehicle-mounted emergency electric system according to claim 1, it is characterised in that
The detection unit is when the voltage for detecting the main battery is higher than the first predetermined voltage threshold, control described first
First control contact of relay turns on the second control contact；
The detection unit is when the voltage for detecting the main battery is less than the second predetermined voltage threshold, control described first
First control contact of relay disconnects with the second control contact；
The detection unit is default with second between first predetermined voltage threshold in the voltage for detecting the main battery
When between voltage threshold, first relay is controlled to keep current state.
3. vehicle-mounted emergency electric system according to claim 2, it is characterised in that the first voltage grade is 12V, institute
It is 48V to state second voltage grade.
4. vehicle-mounted emergency electric system according to claim 3, it is characterised in that the first voltage grade is 12V, institute
It is 13.3V to state the first predetermined voltage threshold, and second predetermined voltage threshold is 12.7V.
5. vehicle-mounted emergency electric system according to claim 2, it is characterised in that first relay is normally opened relay
Device, the detection unit are also connected with the enabling signal port of motor vehicle；
When the motor vehicle is in starting state, the detection unit obtains electric energy from the enabling signal port and started working,
First relay is controlled according to the voltage of the main battery；
When the motor vehicle is in non-started state, the detection unit dead electricity does not work, and first relay is not carried out
Control, first relay maintain off-state.
6. vehicle-mounted emergency electric system according to claim 1, it is characterised in that the vehicle-mounted emergency electric system also wraps
Include voltage display unit；
The positive pole of the voltage display unit is connected with the positive pole of the reserve battery, the voltage display unit negative pole ground connection,
The voltage display unit is used to detect and show the voltage of the reserve battery.
7. vehicle-mounted emergency electric system according to claim 1, it is characterised in that the vehicle-mounted emergency electric system also wraps
Include first manual switch；The first manual switch includes the first button and the second relay；
Second relay be arranged at the output end of the voltage conversion unit and first output interface input it
Between, for controlling the voltage conversion unit to connect on-off with first output interface according to the state of first button
Open；
First button is arranged at the console of the motor vehicle.
8. vehicle-mounted emergency electric system according to claim 1, it is characterised in that the vehicle-mounted emergency electric system also wraps
Include the second output interface；
The electrode input end of second output interface is connected with the positive pole of the reserve battery, and second output interface is born
Pole input end grounding, the output end of second output interface are used for the electricity that first voltage grade is exported to other vehicle-mounted loads
Energy.
9. vehicle-mounted emergency electric system according to claim 8, it is characterised in that the vehicle-mounted emergency electric system also wraps
Include the second hand switch；Second hand switch includes the second button and the 3rd relay；
3rd relay is arranged between the positive pole of the reserve battery and the electrode input end of second output interface,
For controlling the reserve battery to be switched on or switched off with second output interface according to the state of second button；
Second button is arranged at the console of the motor vehicle.
A kind of 10. motor vehicle, it is characterised in that the motor vehicle include output voltage for first voltage grade main battery and
Vehicle-mounted emergency electric system in claim 1-9 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711021891.9A CN107745689A (en) | 2017-10-26 | 2017-10-26 | Vehicle-mounted emergency electric system and motor vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711021891.9A CN107745689A (en) | 2017-10-26 | 2017-10-26 | Vehicle-mounted emergency electric system and motor vehicle |
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| CN107745689A true CN107745689A (en) | 2018-03-02 |
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| CN201711021891.9A Pending CN107745689A (en) | 2017-10-26 | 2017-10-26 | Vehicle-mounted emergency electric system and motor vehicle |
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| CN113178921A (en) * | 2021-05-12 | 2021-07-27 | 中国第一汽车股份有限公司 | Control method, device, equipment and storage medium |
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