CN103481844B - A kind of in-vehicle electronic system, vehicle electronic device method for managing power supply and automobile - Google Patents
A kind of in-vehicle electronic system, vehicle electronic device method for managing power supply and automobile Download PDFInfo
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- CN103481844B CN103481844B CN201310404101.0A CN201310404101A CN103481844B CN 103481844 B CN103481844 B CN 103481844B CN 201310404101 A CN201310404101 A CN 201310404101A CN 103481844 B CN103481844 B CN 103481844B
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Abstract
The invention belongs to technical field of automotive electronics, particularly to a kind of in-vehicle electronic system, vehicle electronic device method for managing power supply and automobile.The present invention includes vehicle electronic device, igniting detection module and the in-vehicle electronic system of switch module by employing, and combine the method for managing power supply of vehicle electronic device, after igniting detection module confirms that automobile is ignited, turn it on the connection between Vehicular accumulator cell outfan and vehicle electronic device power end to switch module output starting-up signal, and then make vehicle electronic device enter open state；Vehicle electronic device output start maintains signal or off signal, makes self to keep start or shutdown.This system uses the mode of pure hardware to realize igniting detection, and vehicle electronic device can be completely closed, solve the problem using software detection to need persistently to consume power supply, meet ecological requirements, and this system only need to connect Vehicular accumulator cell, there is wiring advantage simply and easily.
Description
Technical field
The invention belongs to technical field of automotive electronics, set particularly to a kind of in-vehicle electronic system, vehicle electronics
Stand-by power source management method and automobile.
Background technology
Along with the development of society, people increasingly pay attention to energy problem, wanting the power consumption of various electronic equipments
Ask more and more higher.In in-vehicle electronic system, typically it is desirable that load electronic equipment can be automatically when automobile flameout
Shutdown, can Auto Power On when automotive ignition.
At present, in technical field of automotive electronics, it is usually and the positive source of vehicle electronic device is received automobile
ACC(Accessories, accessory) on circuit.Using this scheme, vehicle electronic device is at parking of automobile
Also it is unplugged shutdown, it is impossible to realize delay switching-off after Xi Huo at once.Therefore, if it is desired that vehicle electronics
Equipment has the function of delay switching-off, it is necessary to increase back-up source at device interior.And, use this side
The automobile of case, its vehicle electronic device will be unable to from automobile cigarette lighter or OBDII(the Second On-Board
Diagnostics, second filial generation onboard diagnostic system) interface etc. carries out power taking.
In order to solve the problems referred to above, kind of a scheme is had to be connected with Vehicular accumulator cell by vehicle electronic device, the most again
Connect the ACC circuit of automobile, by the output of ACC circuit with or without the switching on and shutting down controlling equipment.Use
This scheme, both can realize delay switching-off, without increasing back-up source in vehicle electronic device, but
Need to increase a wiring, the complexity of installation, Material Cost and set-up time can be increased.Further, should
The automobile using this scheme still cannot carry out power taking from automobile cigarette lighter or OBDII interface etc..
Also having a kind of scheme is to be connected on Vehicular accumulator cell by vehicle electronic device, is in flameout state at automobile
Time, vehicle electronic device is all in low power consumpting states such as dormancy.When car engine, vehicle electronic device leads to
Cross judgement automotive service state, automatically into duty.But, use the automobile of this scheme, its car
Although carrying electronic equipment can enter the low power consumpting states such as dormancy, but consuming electricity the most always.Long at automobile
Time parks when not using, and results even in automobile storage battery power shortage and causes automobile cisco unity malfunction.
In sum, there is the problem that wiring is complicated, power consumption is high in existing in-vehicle electronic system.
Summary of the invention
It is an object of the invention to provide a kind of in-vehicle electronic system, it is intended to solve existing in-vehicle electronic system
There is the problem that wiring is complicated, power consumption is high.
The present invention is achieved in that a kind of in-vehicle electronic system, is connected with Vehicular accumulator cell, is included in and connects
Start shooting after entering the electric current of described Vehicular accumulator cell output and export start and maintain signal, and root after automobile flameout
According to the vehicle electronic device of external signal output off signal, described in-vehicle electronic system also includes:
Igniting detection module, test side connects the outfan of described Vehicular accumulator cell, and controlled end connects described car
Carry the outfan of electronic equipment, maintain letter for the output voltage according to described Vehicular accumulator cell with described start
Number output starting-up signal, or forwards described off signal；
Switch module, controlled end is simultaneously connected with the outfan of described igniting detection module and sets with described vehicle electronics
Standby outfan, outfan connects the power end of described vehicle electronic device, for according to described starting-up signal
Or described off signal is turned on or off described Vehicular accumulator cell outfan and described vehicle electronic device power supply
Connection between end.
Another object of the present invention is to provide a kind of vehicle electronics based on above-mentioned in-vehicle electronic system to set
Stand-by power source management method, described method includes following step:
The most described igniting detection module judges whether the output voltage of described Vehicular accumulator cell declines, if so,
Then perform step B, as no, then perform step A；
The most described igniting detection module exports starting-up signal to described switch module；
The most described switch module turns on described Vehicular accumulator cell outfan and described car according to described starting-up signal
Carry the connection between electronic equipment power source end；
The most described vehicle electronic device enters open state and maintains to the output start of described igniting detection module
Signal；
The most described vehicle electronic device maintains open state；
The most described vehicle electronic device exports off signal according to external signal to described igniting detection module；
The most described igniting detection module forwards described off signal to described switch module；
The most described switch module disconnects described Vehicular accumulator cell outfan and described car according to described off signal
Carry the connection between electronic equipment power source end；
The most described vehicle electronic device enters off-mode.
Another object of the present invention is to provide a kind of automobile, including car body, described automobile includes above-mentioned
In-vehicle electronic system.
The present invention includes described vehicle electronic device, described igniting detection module and described switch by employing
The described in-vehicle electronic system of module, and combine the method for managing power supply of described vehicle electronic device, described
After igniting detection module confirms that described automobile is ignited, turn it on to described switch module output starting-up signal
Connection between described Vehicular accumulator cell outfan and described vehicle electronic device power end, and then make described car
Carry electronic equipment and enter open state；Described vehicle electronic device exports described start dimension after entering open state
Hold signal, to maintain the open state of self, and export described off signal according to described external signal, disconnected
Open the power supply of access, so that self enters off-mode.This system uses the mode of pure hardware to realize igniting
Detection, it is possible to completely close described vehicle electronic device, solving employing software detection needs persistently to consume
The problem of power supply, meets ecological requirements, and this system only need to connect described Vehicular accumulator cell, has wiring
Advantage simply and easily.
Accompanying drawing explanation
Fig. 1 is the function structure chart of the in-vehicle electronic system that the embodiment of the present invention is provided；
Fig. 2 is the exemplary circuit structure chart of the igniting detection module that the embodiment of the present invention is provided；
Fig. 3 is the flowage structure figure of the vehicle electronic device method for managing power supply that the embodiment of the present invention is provided.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
The embodiment of the present invention includes vehicle electronic device, igniting detection module and switch module by employing
In-vehicle electronic system, and combine the method for managing power supply of vehicle electronic device, use the mode of pure hardware to realize
Igniting detection, solves the problem using software detection to need persistently to consume power supply, meets ecological requirements, and
And this system only need to connect Vehicular accumulator cell, there is wiring advantage simply and easily.
Fig. 1 shows the modular structure of the in-vehicle electronic system that the embodiment of the present invention provided, for the ease of saying
Bright, illustrate only part related to the present invention, details are as follows:
The in-vehicle electronic system that the embodiment of the present invention is provided is connected with Vehicular accumulator cell 100, is included in access
Start shooting after the electric current of Vehicular accumulator cell 100 output and export start and maintain signal, and basis after automobile flameout
The vehicle electronic device 400 of external signal output off signal, this in-vehicle electronic system also includes:
Igniting detection module 200, test side connects the outfan of Vehicular accumulator cell 100, and controlled end connects car
Carry the outfan of electronic equipment 400, maintain letter for the output voltage according to Vehicular accumulator cell 100 with start
Number output starting-up signal, or forward off signal.
Switch module 300, controlled end is simultaneously connected with the outfan of igniting detection module 200 and sets with vehicle electronics
The outfan of standby 400, outfan connects the power end of vehicle electronic device 400, for according to starting-up signal
Or off signal is turned on or off between Vehicular accumulator cell 100 outfan and vehicle electronic device 400 power end
Connection.
In embodiments of the present invention, the outfan of Vehicular accumulator cell 100 be connected directly to automobile cigarette lighter or
OBDII interface.Therefore, this in-vehicle electronic system can be directly connected to automobile cigarette lighter or OBDII interface
Power end with obtain Vehicular accumulator cell 100 electric current output.
In embodiments of the present invention, automobile is igniting when, and its Vehicular accumulator cell 100 carries to igniting dress
For bigger electric current, its output voltage can decline at short notice；After automotive ignition completes, vehicular electricity storage
The output voltage in pond 100 returns to again normal value.Therefore, as long as detecting car by igniting detection module 200
Carry the output voltage values of accumulator 100, it is possible to judge whether automobile is in fired state.Use this programme
In-vehicle electronic system, after automobile flameout, vehicle electronic device 400 can also keep open state,
In order to make vehicle electronic device 400 can automobile flameout laggard enter off-mode, vehicle electronics can be passed through
Equipment 400 detects the voltage of ACC circuit, when ACC line voltage distribution is low level, i.e. receives outside
Signal, it is judged that automobile enters flameout state, and postpones certain time entrance off-mode.
In another embodiment of the invention, it is also possible on vehicle electronic device 400, set shutdown button,
The push button signalling that user is inputted is external signal, makes vehicle electronic device 400 enter according to the operation of user
Enter off-mode.
In another embodiment of the invention, it is also possible to judge whether automobile is located according to the velocity sensor in car
In kinestate, in the case of vehicle stationary, after software delays certain time, make vehicle electronic device 400
Enter off-mode.
Fig. 2 shows the exemplary circuit structure of the igniting detection module 200 that the embodiment of the present invention provided, for
Being easy to explanation, only illustrate and embodiment of the present invention relevant portion, details are as follows:
As one embodiment of the invention, igniting detection module 200 may include that
Resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, electric capacity C2, the first diode
D1, the second diode D2, a NPN audion Q1 and the 2nd NPN audion Q2；
First end of electric capacity C1, first end of resistance R2, first end of resistance R3 and the 2nd NPN
The colelctor electrode of audion Q2 connects the input forming igniting detection module 200, first end of resistance R1 altogether
Connecting second end of electric capacity C1, second end of resistance R1 and second end of resistance R2 are connected to a NPN altogether
The base stage of audion Q1, second end of resistance R3 and the colelctor electrode of a NPN audion Q1 are connected to altogether
The base stage of the 2nd NPN audion Q2, the grounded emitter of a NPN audion Q1, the 2nd NPN
The emitter stage of audion Q2 connects the anode of the first diode D1, the negative electrode of the first diode D1, second
First end of the negative electrode of diode D2, first end of electric capacity C2 and resistance R4 connects formation igniting detection altogether
The outfan of module 200, second end of electric capacity C2 and second end of resistance R4 be connected to ground altogether, and the two or two
The anode of pole pipe D2 is the controlled end of igniting detection module 200.
In embodiments of the present invention, resistance R4, electric capacity C2 and the second diode D2 can also be to starts
Maintain signal or off signal guides and Filtering Processing.Owing to vehicle electronic device 400 needs output to open
Machine maintains signal to make self to be in open state, and shake once occurs in this signal, and switch module 300 will
Of short duration cut-off occurs, and then makes vehicle electronic device 400 restart.
In embodiments of the present invention, switch module 300 can be a power supply chip；
The Enable Pin of power supply chip is the controlled end of switch module 300, and the power end of power supply chip is switching molding
The power end of block 300, the outfan of power supply chip is the outfan of switch module 300, connecing of power supply chip
Ground end ground connection.
In embodiments of the present invention, power supply chip can be model be HIP6301, IS6537 or RT9237
Power supply chip.Use power supply chip as switch module 300, be possible not only to realize the control to electric current supply
System, it is also possible to the voltage of the electric current supplied is carried out voltage transformation process.
In another embodiment of the invention, it is characterised in that switch module 300 can be a switching tube；
The controlled end of switching tube is the controlled end of switch module 300, and the input of switching tube is switch module
The power end of 300, the outfan of switching tube is the outfan of switch module 300.
In embodiments of the present invention, switching tube can be NPN audion, NMOS tube or controlled diode.
Use switching tube as switch module 300, then need to accordingly increase a voltage transformation module to realize being supplied
The voltage of the electric current answered carries out conversion process.
Below in conjunction with Fig. 1 to Fig. 2, the operation principle of in-vehicle electronic system provided by the present invention is done further
Illustrate:
When automobile is in flameout state, the base stage of a NPN audion Q1 is connected to by resistance R2
The outfan of Vehicular accumulator cell 100, its base stage is in high level state and turns on.2nd NPN audion
The base stage of Q2 passes through a NPN audion Q1 ground connection, and its base stage is in low level state and ends.The
One diode D1 cut-off, the negative electrode of the first diode D1 is in low level state by resistance R4 ground connection,
And then make switch module 300 end.
When automobile is lighted a fire by user, the output end voltage of Vehicular accumulator cell 100 declines, a NPN
The base voltage of audion Q1 declines simultaneously, and a NPN audion Q1 enters cut-off state, and then makes
2nd NPN audion Q2 enters conducting state owing to base voltage raises.Now the first diode D1
Anode be connected to the outfan of Vehicular accumulator cell 100 by the 2nd NPN audion Q2 and enter conducting shape
State, the negative electrode of the first diode D1 is become high level from low level, i.e. exports starting-up signal.Switch module
300 according to this starting-up signal conducting Vehicular accumulator cell 100 outfan and vehicle electronic device 400 power end it
Between connection, make vehicle electronic device 400 enter open state.While vehicle electronic device 400 start
Output one start maintains signal, i.e. high level signal to the second diode D2, makes the moon of the second diode D2
Pole keeps high level state, maintains the conducting of switch module 300, and then maintains at vehicle electronic device 400
In open state.
After user is by automobile flameout, vehicle electronic device 400 maintains signal to locate owing to persistently exporting start
In open state, now vehicle electronic device 400 is according to user operation or default delay time, to switch
Module 300 exports off signal, i.e. low level signal makes the second diode D2 cut-off, switch module 300
Controlled end receive low level signal by resistance R4 and enter cut-off state, thus disconnect Vehicular accumulator cell
Connection between 100 outfans and vehicle electronic device 400 power end, and then make vehicle electronic device 400
Enter off-mode.
The another object of the embodiment of the present invention is to provide a kind of vehicle mounted electric based on above-mentioned in-vehicle electronic system
Subset 400 method for managing power supply.
Fig. 3 shows the flow process of vehicle electronic device 400 method for managing power supply that the embodiment of the present invention provided
Structure, for convenience of description, illustrate only and embodiment of the present invention relevant portion, and details are as follows:
Vehicle electronic device 400 method for managing power supply that the embodiment of the present invention is provided can include following
Step:
S10. igniting detection module 200 judges whether the output voltage of Vehicular accumulator cell 100 declines, if so,
Then perform step S20, as no, then perform step S10；
S20. igniting detection module 200 exports starting-up signal to switch module 300；
S30. switch module 300 is according to starting-up signal conducting Vehicular accumulator cell 100 outfan and vehicle electronics
Connection between equipment 400 power end；
S40. vehicle electronic device 400 enters open state and to igniting detection module 200 output start dimension
Hold signal；
S50. vehicle electronic device 400 maintains open state；
S60. vehicle electronic device 400 exports off signal according to external signal to igniting detection module 200；
S70. igniting detection module 200 forwards off signal to switch module 300；
S80. switch module 300 disconnects Vehicular accumulator cell 100 outfan and vehicle electronics according to off signal
Connection between equipment 400 power end；
S90. vehicle electronic device 400 enters off-mode.
In embodiments of the present invention, automobile is igniting when, and its Vehicular accumulator cell 100 carries to igniting dress
For bigger electric current, its output voltage can decline at short notice；After automotive ignition completes, vehicular electricity storage
The output voltage in pond 100 returns to again normal value.Therefore, as long as detecting car by igniting detection module 200
Carry the output voltage values of accumulator 100, it is possible to judge whether automobile is in fired state.
In order to make vehicle electronic device 400 can automobile flameout laggard enter off-mode, can be by vehicle-mounted
Electronic equipment 400 detects the voltage of ACC circuit, when ACC line voltage distribution is low level, i.e. receives
External signal, it is judged that automobile enters flameout state, and postpones certain time entrance off-mode.
In another embodiment of the invention, it is also possible on vehicle electronic device 400, set shutdown button,
The push button signalling that user is inputted is external signal, makes vehicle electronic device 400 enter according to the operation of user
Enter off-mode.
In another embodiment of the invention, it is also possible to judge whether automobile is located according to the velocity sensor in car
In kinestate, in the case of vehicle stationary, after software delays certain time, make vehicle electronic device 400
Enter off-mode.
The another object of the embodiment of the present invention is to provide a kind of automobile, and this automobile includes car body, also wraps
Include above-mentioned in-vehicle electronic system, and use above-mentioned vehicle electronic device 400 method for managing power supply.
The present invention includes vehicle electronic device 400, igniting detection module 200 and switch module by employing
The in-vehicle electronic system of 300, and combine the method for managing power supply of vehicle electronic device 400, in igniting detection
After module confirms that automobile is ignited, export starting-up signal to switch module 300 and turn it on Vehicular accumulator cell
Connection between 100 outfans and vehicle electronic device 400 power end, and then make vehicle electronic device 400
Enter open state；After vehicle electronic device 400 enters open state, output start maintains signal, to maintain
The open state of self, and export off signal according to external signal, disconnect the power supply accessed, so that from
Body enters off-mode.This system uses the mode of pure hardware to realize igniting detection, it is possible to completely close car
Carrying electronic equipment 400, solve the problem using software detection to need persistently to consume power supply, meeting environmental protection needs
Ask, and this system only need to connect Vehicular accumulator cell 100, has wiring advantage simply and easily.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (5)
1. an in-vehicle electronic system, is connected with Vehicular accumulator cell, is included in the described Vehicular accumulator cell of access
Start shooting after the electric current of output and export start and maintain signal, and close according to external signal output after automobile flameout
The vehicle electronic device of machine signal, it is characterised in that described in-vehicle electronic system also includes:
Igniting detection module, the test side of described igniting detection module connects the output of described Vehicular accumulator cell
End, the controlled end of described igniting detection module connects the outfan of described vehicle electronic device, and described igniting is examined
Survey module and maintain signal output start letter for the output voltage according to described Vehicular accumulator cell and described start
Number, or forward described off signal；
Switch module, the controlled end of described switch module be simultaneously connected with the outfan of described igniting detection module with
The outfan of described vehicle electronic device, the outfan of described switch module connects described vehicle electronic device
Power end, described switch module is described for being turned on or off according to described starting-up signal or described off signal
Connection between Vehicular accumulator cell outfan and described vehicle electronic device power end；
Described igniting detection module includes: resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1,
Electric capacity C2, the first diode, the second diode, a NPN audion and the 2nd NPN audion；
First end of described electric capacity C1, first end of described resistance R2, described resistance R3 the first end with
And the colelctor electrode of described 2nd NPN audion connects the input forming described igniting detection module altogether, described
First end of resistance R1 connects second end of described electric capacity C1, second end of described resistance R1 and described electricity
Second end of resistance R2 is connected to the base stage of a described NPN audion altogether, second end of described resistance R3 with
The colelctor electrode of a described NPN audion is connected to the base stage of described 2nd NPN audion altogether, and described first
The grounded emitter of NPN audion, the emitter stage of described 2nd NPN audion connects described one or two pole
The anode of pipe, the negative electrode of described first diode, the negative electrode of described second diode, described electric capacity C2
First end of the first end and described resistance R4 connects the outfan forming described igniting detection module altogether, described
Second end of electric capacity C2 is connected to ground, the anode of described second diode altogether with second end of described resistance R4
It it is the controlled end of described igniting detection module.
2. in-vehicle electronic system as claimed in claim 1, it is characterised in that described switch module is
Power supply chip, the Enable Pin of described power supply chip is the controlled end of described switch module, described power supply chip
Power end is the power end of described switch module, and the outfan of described power supply chip is the defeated of described switch module
Go out end, the earth terminal ground connection of described power supply chip.
3. in-vehicle electronic system as claimed in claim 1, it is characterised in that described switch module is
Switching tube, the controlled end of described switching tube is the controlled end of described switch module, the input of described switching tube
For the power end of described switch module, the outfan of described switching tube is the outfan of described switch module.
4. a vehicle electronic device power management side based on the in-vehicle electronic system described in claim 1
Method, it is characterised in that described method includes following step:
The most described igniting detection module judges whether the output voltage of described Vehicular accumulator cell declines, if so,
Then perform step B, as no, then perform step A；
The most described igniting detection module exports starting-up signal to described switch module；
The most described switch module turns on described Vehicular accumulator cell outfan and described car according to described starting-up signal
Carry the connection between electronic equipment power source end；
The most described vehicle electronic device enters open state and maintains to the output start of described igniting detection module
Signal；
The most described vehicle electronic device maintains open state；
The most described vehicle electronic device exports off signal according to external signal to described igniting detection module；
The most described igniting detection module forwards described off signal to described switch module；
The most described switch module disconnects described Vehicular accumulator cell outfan and described car according to described off signal
Carry the connection between electronic equipment power source end；
The most described vehicle electronic device enters off-mode.
5. an automobile, including car body, it is characterised in that described automobile includes such as claim 1
To the in-vehicle electronic system described in 3 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310404101.0A CN103481844B (en) | 2013-09-06 | 2013-09-06 | A kind of in-vehicle electronic system, vehicle electronic device method for managing power supply and automobile |
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| CN201310404101.0A CN103481844B (en) | 2013-09-06 | 2013-09-06 | A kind of in-vehicle electronic system, vehicle electronic device method for managing power supply and automobile |
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| CN104977858B (en) * | 2014-04-04 | 2017-12-22 | 惠州市德赛西威汽车电子股份有限公司 | A kind of control method of vehicle electronic device switching on and shutting down |
| KR20170014962A (en) * | 2015-07-31 | 2017-02-08 | 현대자동차주식회사 | Battery Management System for vehicle and controlling method thereof |
| CN105128777B (en) * | 2015-08-24 | 2017-06-30 | 北京开元智信通软件有限公司 | Car electrics starter |
| CN105599706B (en) * | 2015-12-22 | 2018-09-07 | 深圳市智行畅联科技有限公司 | A kind of standby management method and system of intelligent vehicle-carried information entertainment |
| CN105759681B (en) * | 2016-01-28 | 2018-09-18 | 深圳创维汽车智能有限公司 | Abnormal circumvention device evades the control system and method for mobile unit exception |
| CN105974910B (en) * | 2016-07-08 | 2018-07-27 | 深圳恩培科技有限公司 | Auto-power on control device and system |
| CN106985771A (en) * | 2017-04-21 | 2017-07-28 | 华南理工大学 | A kind of onboard diagnostic device dormancy start-up circuit |
| CN107696993A (en) * | 2017-10-18 | 2018-02-16 | 深圳市信丰伟业科技有限公司 | External vehicle-mounted equipment protection circuit and control method |
| CN110031692B (en) * | 2018-01-10 | 2023-07-21 | 厦门雅迅网络股份有限公司 | Method and circuit for assisting vehicle-mounted equipment in accurately identifying ACC (active control) state |
| CN110244682A (en) * | 2018-03-08 | 2019-09-17 | 厦门雅迅网络股份有限公司 | A kind of circuit and method of vehicle electronic device separation of software and hardware control shutdown |
| CN109969106A (en) * | 2019-04-21 | 2019-07-05 | 常州轻工职业技术学院 | Vehicle-mounted ACC power control and method based on NMOS |
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| JP2004090674A (en) * | 2002-08-29 | 2004-03-25 | Denso Corp | Power controller |
| JP4261217B2 (en) * | 2003-02-25 | 2009-04-30 | 株式会社東海理化電機製作所 | Vehicle power supply control device |
| JP2010285122A (en) * | 2009-06-15 | 2010-12-24 | Beat Sonic:Kk | On-vehicle power supply adapter switch |
| CN201511910U (en) * | 2009-07-08 | 2010-06-23 | 孙建朋 | Automobile comprehensive performance regulation and control device |
| JP2012192754A (en) * | 2011-03-15 | 2012-10-11 | Omron Automotive Electronics Co Ltd | In-vehicle apparatus control device |
| CN203005111U (en) * | 2012-11-14 | 2013-06-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Delayed power-off device for electric vehicle |
| CN103023134B (en) * | 2012-12-26 | 2015-01-14 | 深圳市伊爱高新技术开发有限公司 | Switching and protection circuit for standby battery of vehicle-mounted GPS (global positioning system) terminal |
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