CN104842895B - Power transfer device and method, car-mounted terminal and vehicle - Google Patents
Power transfer device and method, car-mounted terminal and vehicle Download PDFInfo
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- CN104842895B CN104842895B CN201410592363.9A CN201410592363A CN104842895B CN 104842895 B CN104842895 B CN 104842895B CN 201410592363 A CN201410592363 A CN 201410592363A CN 104842895 B CN104842895 B CN 104842895B
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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
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Abstract
The invention discloses a kind of power transfer device and method, car-mounted terminal and vehicle, the power transfer device includes microprocessor, voltage switching module and a DC/DC modules；The microprocessor, its voltage range for being used to detect vehicle battery, and control the voltage switching module according to the voltage range values of the vehicle battery for detecting；The voltage switching module, it is under the control of the microprocessor, according to the voltage range of vehicle battery, regulation vehicle battery supplies the voltage of a DC/DC modules, and sets the low pressure threshold value that a DC/DC modules obtain voltage from vehicle battery；The first DC/DC modules, its under the regulation of the voltage switching module, from vehicle battery obtain voltage, and to obtain voltage change, then to the microprocessor and car-mounted terminal each part provide operating voltage.The present invention solves the problems, such as that conventional car-mounted terminal power supply matching is cumbersome, improves the accommodation and installation effectiveness of car-mounted terminal.
Description
Technical field
The present invention relates to car-mounted terminal technical field, in particular it relates to a kind of power transfer device of car-mounted terminal and side
Method, the car-mounted terminal for further relating to include the power transfer device and the vehicle for installing the car-mounted terminal.
Background technology
Car-mounted terminal is typically directly powered using vehicle battery, and the battery of different automobile types has various in the market
Voltage, common are that 12v/24v/36v is several, and car-mounted terminal is in order to adapt to the demand of different automobile types, it is necessary to support multiple power sources
Voltage, while each voltage will have under-voltage protection function, this requires that car-mounted terminal will can distinguish different inputs
Voltage, and different low pressure thresholdings are set according to this voltage, so that when vehicle battery voltage is less than threshold value, terminal should stop
Only from automobile storage battery power taking, with increasing storage battery service life, the normal work of vehicle is protected.
In order to adapt to the various of in the market, car-mounted terminal can typically support that Width funtion is input into, but at present mostly
Number terminal is required for setting manually the threshold value of input voltage range and configuration under-voltage protection, and this results in the suitable of car-mounted terminal
Should be limited in scope, while bringing very big inconvenience to production and installation, also be susceptible to maloperation, cause the terminal cannot normal work
Make.
According to Chinese transportation carrier standard《JT/T794-2011/6.4.1.2 supply voltage adaptability》Middle regulation, car
The supply voltage adaptability of mounted terminal is as shown in the table.
Electrical performance test parameter (the unit of table 1：V)
According to《JT/T794-2011/6.4.1.6 under-voltage protection performances》Middle regulation, low pressure threshold value requirement is as follows：
--- 12V batteries：8.5V±0.5V；
--- 24V batteries：17.0V±1.0V；
--- 36V batteries：26.0V±1.0V；
When vehicle battery voltage is less than threshold value, terminal should stop from automobile storage battery power taking, to extend battery
Service life, protects the normal work of vehicle.When automobile storage battery voltage recovers to exceed low pressure high thresholdhigh, terminal should be from
Reserve battery switches back into automobile storage battery and powers, and recovers from automobile storage battery power taking.
Car-mounted terminal currently on the market typically sets hardware jumper or the artificial side for setting software parameters using artificial
Method, thus brings a problem, and when actually used battery tension and the artificial voltage for setting are mismatched, terminal may
Cannot work, or low pressure thresholding does not have due effect and the electricity of battery has been consumed.Such as car-mounted terminal connects 12V storages
Battery, and manually it is arranged to 24V, low pressure thresholding is 17V ± 1V, and at this moment terminal cannot work.Car-mounted terminal connects 24V batteries,
And manually it is arranged to 12V, low pressure thresholding is 8.5V ± 0.5V, and at this moment terminal may work until battery tension is dropped to always
8.5V or so, can so cause the electricity of battery to deplete, and other important electric power supplies be had influence on, to the life-span of battery
Also have an impact.
The content of the invention
It is an object of the invention to provide the power transfer device and method of a kind of car-mounted terminal, for solving conventional vehicle-mounted end
End power supply matches cumbersome technical problem.
To achieve these goals, the present invention provides a kind of power transfer device of car-mounted terminal, including microprocessor, electricity
Pressure handover module and a DC/DC modules；
The microprocessor, its voltage range for being used to detect vehicle battery, and according to the vehicle battery for detecting
Voltage range values control the voltage switching module；
The voltage switching module, it, according to the voltage range of vehicle battery, is adjusted under the control of the microprocessor
Section vehicle battery supplies the voltage of a DC/DC modules；
The first DC/DC modules, it obtains voltage under the regulation of the voltage switching module from vehicle battery,
And the voltage to obtaining is changed, then operating voltage is provided to each part of the microprocessor and car-mounted terminal.
The beneficial effect of power transfer device of the invention is：It is cumbersome that the present invention solves conventional car-mounted terminal power supply matching
Problem, car-mounted terminal automatic identification storage battery power supply voltage, it is not necessary to artificial operation hardware jumper and configuration software parameter subtracts
Lack the probability for mistake occur, improve the accommodation and installation effectiveness of car-mounted terminal.
Preferably, a DC/DC modules use the step-down converter chip of model TPS54260.
Beneficial effect using above-mentioned optimal technical scheme is：TPS54260 chips support the input voltage of 3.5V-60V,
With Enable Pin EN and state instruction end PWRGOOD, when EN is more than 1.25V, chip enables effective, output 5V voltages, while
PWRGOOD effectively and exports low level, and the characteristic is conducive to the voltage switching module of car-mounted terminal and setting for voltage detection module
Meter.
Preferably, the voltage switching module includes the first triode Q1, the second triode Q2, resistance R3, resistance R4, electricity
Resistance R7 and R8；
The base stage of the base stage of the first triode Q1 and the second triode Q2 each via a resistance with it is described
Two control ends connection of microprocessor, and each via a resistance eutral grounding, the emitter stage of the first triode Q1 is connected
The colelctor electrode of the second triode Q2, one end of the colelctor electrode connection resistance R7 of the first triode Q1, resistance R7's is another
One end connects the step-down converter core of one end, one end of resistance R3, one end of resistance R4 and the model TPS54260 of resistance R8
The Enable Pin of piece, the other end of resistance R8 connects the colelctor electrode of the second triode Q2, the other end connection vehicle of resistance R3
The voltage input end of the voltage output end of battery and the step-down converter chip of model TPS54260, and by a resistance
Connect the voltage detecting end of the microprocessor, the emitter stage of the other end of resistance R4 and the second triode Q2 is grounded.
Beneficial effect using above-mentioned optimal technical scheme is：The circuit of voltage switching module constitutes simple, component number
Amount is few, can realize voltage switching by the break-make of two triodes.
Preferably, also including the 2nd DC/DC modules, its be connected to a DC/DC modules and the microprocessor it
Between, the 5V voltage conversions for a DC/DC modules to be exported are 3.3V, then are exported to the microprocessor.
Beneficial effect using above-mentioned optimal technical scheme is：3.3V output voltages are obtained, is supplied to microprocessor module and other
Electricity.
Preferably, while the voltage switching module regulation vehicle battery supplies the voltage of a DC/DC modules, it is
The first DC/DC modules matching obtains the low pressure threshold value of voltage from vehicle battery.
Beneficial effect using above-mentioned optimal technical scheme is：When vehicle battery voltage is less than low pressure threshold value, make
Car-mounted terminal stops from vehicle battery power taking, is conducive to increasing storage battery service life, protects the normal work of vehicle.
Preferably, the microprocessor uses Cortex-M3 kernel LPC1768 microprocessors.
Beneficial effect using above-mentioned optimal technical scheme is：Cortex-M3 kernel LPC1768 microprocessors have power consumption
Low, speed is fast, it is feature-rich the characteristics of.
The present invention also provides a kind of power-supply switching method of car-mounted terminal, comprises the following steps：
The voltage range of vehicle battery is detected by microprocessor；
Under the control of the microprocessor, voltage switching module adjusts vehicle according to the voltage range of vehicle battery
Battery supplies the voltage of a DC/DC modules；
Under the regulation of the voltage switching module, a DC/DC modules obtain voltage from vehicle battery, and right
The voltage of acquisition is changed, then provides operating voltage to each part of the microprocessor and car-mounted terminal.
The beneficial effect of power-supply switching method of the invention is：Battery is judged by the voltage detection module of microprocessor
It is currently under which kind of power supply status, and car-mounted terminal supply voltage is matched by control voltage handover module, it is not necessary to is artificial
Operation hardware jumper and configuration software parameter, reduce the probability for mistake occur, improve the accommodation and peace of car-mounted terminal
Dress efficiency.
Preferably, under the control of the microprocessor, voltage switching module is adjusted according to the voltage range of vehicle battery
Section vehicle battery supplies the voltage of a DC/DC modules, specifically includes：
When microprocessor detects the voltage range of vehicle battery in 9V-16V, microprocessor is cut by control voltage
Mold changing block makes a DC/DC modules be maintained at 12V work；
When microprocessor detects the voltage range of vehicle battery in 18V-32V, microprocessor passes through control voltage
Handover module makes a DC/DC modules switch to 24V work；
When microprocessor detects the voltage range of vehicle battery in 27-48V, microprocessor is cut by control voltage
Mold changing block makes a DC/DC modules switch to 36V work.
Beneficial effect using above-mentioned optimal technical scheme is：By microprocessor control voltage handover module, realize
The voltage that first DC/DC modules are based on 12V/24V/36V automatically switches, simple to operate.
Preferably, also include：After car-mounted terminal work a period of time, microprocessor detects the electricity of vehicle battery again
Pressure scope, and control the voltage switching module regulation the first DC/DC modules to be obtained from vehicle battery according to testing result
The voltage for taking.
Beneficial effect using above-mentioned optimal technical scheme is：In the car-mounted terminal course of work, particularly work as battery
During power shortage, by the voltage range of repeated detection vehicle battery, to ensure to occur without erroneous judgement and switch by mistake.
Preferably, it is described while voltage switching module regulation vehicle battery supplies the voltage of a DC/DC modules
The matching of first DC/DC modules obtains the low pressure threshold value of voltage from vehicle battery.
Beneficial effect using above-mentioned optimal technical scheme is：While a DC/DC module for power supply voltages are matched, if
The low pressure threshold value that a DC/DC modules obtain voltage from vehicle battery is determined, when vehicle battery voltage is less than low pressure door
During limit value, car-mounted terminal is stopped from vehicle battery power taking, be conducive to increasing storage battery service life, protect the normal of vehicle
Work.
Technical scheme also includes a kind of car-mounted terminal, and the car-mounted terminal is included described in any of the above-described technical scheme
Power transfer device.
Technical scheme also includes a kind of vehicle, it is characterised in that the vehicle is provided with above-mentioned vehicle termination.
Car-mounted terminal of the invention and vehicle include above-mentioned power transfer device, therefore it equally has above-mentioned advantage.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body implementation method is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of power transfer device of the present invention.
Fig. 2 is the principle schematic of voltage switching module and TPS54260 chip periphery circuits in the embodiment of the present invention；
Fig. 3 is the power transfer device of car-mounted terminal in the embodiment of the present invention and the workflow schematic diagram of method.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
As shown in figure 1, this gives a kind of power transfer device of car-mounted terminal, including microprocessor, voltage
Handover module, a DC/DC modules and the 2nd DC/DC modules；
The microprocessor, its voltage range for being used to detect vehicle battery, and according to the vehicle battery for detecting
Voltage range values control the voltage switching module；
The voltage switching module, it, according to the voltage range of vehicle battery, is adjusted under the control of the microprocessor
Section vehicle battery supplies the voltage of a DC/DC modules, and for DC/DC modules matching is obtained from vehicle battery
The low pressure threshold value of voltage；
The first DC/DC modules, it obtains voltage under the regulation of the voltage switching module from vehicle battery,
And the voltage to obtaining is changed, then operating voltage is provided to each part of the microprocessor and car-mounted terminal；
The 2nd DC/DC modules, it is connected between a DC/DC modules and the microprocessor, for inciting somebody to action
The 5V voltage conversions of the first DC/DC modules output are 3.3V, then are exported to the microprocessor.
In the present embodiment, the microprocessor uses Cortex-M3 kernel LPC1768 microprocessors, with low in energy consumption, speed
The characteristics of degree is fast, feature-rich, the main control for completing power supply, the setting of real-time clock, the reception of location data and parsing, number
According to storage and backup, the identification of input signal, screen display control, the control of communication module, the data receiver of CAN and
Collection of switching value etc..
In the present embodiment, a DC/DC modules use the step-down converter chip of model TPS54260,
TPS54260 is a step-down converter of Ti companies, supports that the input voltage of 3.5V-60V, chip carry Enable Pin EN and shape
State indication end PWRGOOD, when EN is more than 1.25V, chip enables effective, exports 5V voltages, while PWRGOOD effectively and is exported
Low level.
Using the above-mentioned characteristic of the TPS54260 chips, the present embodiment devises corresponding voltage switching module, such as Fig. 2 institutes
Show, the voltage switching module includes the first triode Q1, the second triode Q2, resistance R3, resistance R4, resistance R7 and R8.
The base stage of the base stage of the first triode Q1 and the second triode Q2 is each via resistance R13 and resistance
R11 is connected with two control ends PWR_CTL1 and PWR_CTL2 of the microprocessor, and each via resistance R14 and resistance
R12 is grounded, and the emitter stage of the first triode Q1 connects the colelctor electrode of the second triode Q2, the first triode Q1
Colelctor electrode connection resistance R7 one end, one end of the other end connection resistance R8 of resistance R7, one end of resistance R3, resistance R4
The other end of the Enable Pin EN of the step-down converter chip of one end and model TPS54260, resistance R8 connects the two or three pole
The colelctor electrode of pipe Q2, the step-down of the voltage output end UB and model TPS54260 of the other end connection vehicle battery of resistance R3
The voltage input end VIN of converter chip, and the voltage detecting end UB_AD of the microprocessor, resistance are connected by resistance R1
The emitter stage of the other end of R4 and the second triode Q2 is grounded.Wherein, the voltage detecting end UB_AD connections of the microprocessor
Its built-in voltage detection module, the voltage input end VIN of the step-down converter chip of the model TPS54260 is by electricity
Resistance R9 connection status indication end PWRGOOD.
Fig. 2 illustrates the associated peripheral circuits of TPS54260 chips simultaneously, the series capacitance C1 between BOOT ends and PH ends,
In PH ends and GND ends parallel diode D1, one end of diode cathode connection PH ends and inductance L1, diode anode connection GND
End, electric capacity C2, C3, C4 are parallel between the other end of inductance L1 and GND ends, while GND ends are grounded.The other end of inductance L1
It is also associated with the resistance R2 and R6 of series connection, and one end connection VSENSE ends that R6 is connected with R2, the other end ground connection of R6.Resistance L1
The other end as 5V power voltage supplies end, its connection binding post TP1~TP60 realizes that each part of car-mounted terminal is powered.Electricity
It is in parallel with electric capacity C9 again after resistance R5 and electric capacity C10 series connection, and the parallel circuit connects the CMOP ends of TPS54260 chips.
TPS54260 chip SS/TR ends are grounded by electric capacity C8, and RT/CLK ends are grounded by resistance R10, and GND1-GND6 ends are direct
Ground connection.Additionally, the voltage output end UB of vehicle battery is grounded by three shunt capacitances C5, C6, C7.
Voltage detection module is integrated with the microprocessor, the input of the voltage detection module is correspondence micro- place
The voltage detecting end UB_AD of device is managed, it is used on car-mounted terminal before electricity and detects vehicle after car-mounted terminal work a period of time
The voltage range of battery, to realize the correction to the voltage range of vehicle battery.
Car-mounted terminal is broadly divided into three steps by what above-mentioned power transfer device carried out power supply switching：
First, the voltage range of vehicle battery is detected by microprocessor；
Secondly, under the control of the microprocessor, voltage switching module is adjusted according to the voltage range of vehicle battery
Vehicle battery supplies the voltage of a DC/DC modules, and for DC/DC modules matching obtains electricity from vehicle battery
The low pressure threshold value of pressure；
Finally, under the regulation of the voltage switching module, a DC/DC modules obtain electricity from vehicle battery
Pressure, and to obtain voltage change, then to the microprocessor and car-mounted terminal each part provide operating voltage.
The car-mounted terminal of the present embodiment supports the input of 9-48V Width funtions, and voltage switching module is controlled by two triodes
, in the voltage switching of 12V/24V/36V, acquiescence is in 12V work for first DC/DC modules.After microprocessor work, by its electricity
Pressure detection module detection battery tension scope, when battery tension scope is in 9-16V, keeps 12V work；Work as storage battery
Pressure scope is switched to 24V work in 18-32V；When battery tension scope is in 27-48V, 36V work is switched to.
As shown in figure 3, the workflow of the power transfer device of the car-mounted terminal of the present embodiment and method is as follows.
First, electricity on car-mounted terminal.
Secondly, whether effectively detection vehicle ACC signals, carry out low-power consumption mode, otherwise startup power supply switching if invalid
Device, the voltage detection module on microprocessor is started working.
Again, the battery tension scope for being detected according to voltage detection module, point following three kinds of situations perform power supply switching.
1) when the voltage range of vehicle battery is detected in 9V-16V, microprocessor controls the first triode Q1 and the
Two triode Q2 are remained open, resistance R3 and resistance R4 partial pressures, by setting the resistance of corresponding resistor, control model
The step-down converter chip of TPS54260 is maintained at 12V work, and when UB is more than 8.5V, C points voltage is more than 1.25V,
TPS54260 chip normal works, make TPS54260 chips output voltage for 5V, at the same by low pressure threshold value be set to 8.5V ±
0.5V。
2) when the voltage range of vehicle battery is detected in 18V-32V, microprocessor controls the first triode Q1 to break
Open, the second triode Q2 closures, with resistance R3 partial pressures after resistance R4 and resistance R8 parallel connections, by setting the resistance of corresponding resistor,
The step-down converter chip of control model TPS54260 is maintained at 24V work, and when UB is more than 17V, C point voltages are more than
1.25V, makes TPS54260 chips output voltage for 5V, while low pressure threshold value is set into 17V ± 1V.
3) when the voltage range of vehicle battery is detected in 27V-48V, microprocessor control the first triode Q1 and
Second triode Q2 is closed, with resistance R3 partial pressures after resistance R4, resistance R7, resistance R8 parallel connections, by setting corresponding resistor
Resistance, the step-down converter chip of control model TPS54260 is maintained at 36V work, and when UB is more than 26V, C point voltages are big
In 1.25V, make its output voltage for 5V, while low pressure threshold value is set into 26.0V ± 1.0V.
When the parked battery too long of vehicle is possible to situation that power shortage occur, for example, the battery of original 24V was placed
Long, voltage is possible to occur less than 16V, to avoid car-mounted terminal by the battery that script should be 24V, is identified as 12V electric power storages
Pond.Therefore, in the car-mounted terminal course of work, microprocessor is also needed to by voltage detection module in real time to vehicle battery
Voltage range is corrected, and controls the voltage switching module according to corrected value, with ensure voltage switching module operation just
Often and occur without erroneous judgement.For example, originally should be the battery of 24V, 12V be dropped to after vehicle parked a period of time, work as car
When being again started up, the battery is identified as 12V by car-mounted terminal, and is worked under 12V systems, through after a period of time, storing
Full of 24V is become, car-mounted terminal detects 24V to battery again by voltage detection module, and system is switched into 24V.
It is noted that after vehicle launch, battery meeting automatic charging, the charging interval has difference according to different automobile types
Not, time needs are demarcated.
The car-mounted terminal of the present embodiment includes above-mentioned power transfer device with the vehicle for installing the car-mounted terminal, therefore
It equally has above-mentioned each advantage.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in range of the technology design of the invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of power transfer device of car-mounted terminal, it is characterised in that including microprocessor, voltage switching module and first
DC/DC modules；
The microprocessor, its voltage range for being used to detect vehicle battery, and according to the electricity of the vehicle battery for detecting
Pressure value range controls the voltage switching module；
The voltage switching module, it, according to the voltage range of vehicle battery, adjusts car under the control of the microprocessor
Battery supplies the voltage of a DC/DC modules；
The first DC/DC modules, it obtains voltage under the regulation of the voltage switching module from vehicle battery, and right
The voltage of acquisition is changed, then provides operating voltage to each part of the microprocessor and car-mounted terminal；
Wherein, it is described the while voltage switching module regulation vehicle battery supplies the voltage of a DC/DC modules
The matching of one DC/DC modules obtains the low pressure threshold value of voltage from vehicle battery.
2. power transfer device according to claim 1, it is characterised in that a DC/DC modules use model
The step-down converter chip of TPS54260.
3. power transfer device according to claim 2, it is characterised in that the voltage switching module includes the one or three pole
Pipe Q1, the second triode Q2, resistance R3, resistance R4, resistance R7 and R8；
The base stage of the base stage of the first triode Q1 and the second triode Q2 is each via a resistance and micro- place
Two control ends connection of device is managed, and each via a resistance eutral grounding, the emitter stage connection of the first triode Q1 is described
The colelctor electrode of the second triode Q2, one end of the colelctor electrode connection resistance R7 of the first triode Q1, the other end of resistance R7
Connect the step-down converter chip of one end, one end of resistance R3, one end of resistance R4 and the model TPS54260 of resistance R8
Enable Pin, the other end of resistance R8 connects the colelctor electrode of the second triode Q2, the other end connection vehicle electric power storage of resistance R3
The voltage input end of the voltage output end in pond and the step-down converter chip of model TPS54260, and connected by a resistance
The emitter stage of the voltage detecting end of the microprocessor, the other end of resistance R4 and the second triode Q2 is grounded.
4. power transfer device according to claim 1, it is characterised in that also including the 2nd DC/DC modules, it is connected to
Between the first DC/DC modules and the microprocessor, for being by the 5V voltage conversions that a DC/DC modules are exported
3.3V, then export to the microprocessor.
5. according to any described power transfer device in Claims 1-4, it is characterised in that the microprocessor is used
Cortex-M3 kernel LPC1768 microprocessors.
6. a kind of power-supply switching method of car-mounted terminal, it is characterised in that including：
The voltage range of vehicle battery is detected by microprocessor；
Under the control of the microprocessor, voltage switching module adjusts vehicle electric power storage according to the voltage range of vehicle battery
Pond supplies the voltage of a DC/DC modules；
Under the regulation of the voltage switching module, a DC/DC modules obtain voltage from vehicle battery, and to obtaining
Voltage changed, then to the microprocessor and car-mounted terminal each part provide operating voltage；
Wherein, it is described first while voltage switching module regulation vehicle battery supplies the voltage of a DC/DC modules
The matching of DC/DC modules obtains the low pressure threshold value of voltage from vehicle battery.
7. power-supply switching method according to claim 6, it is characterised in that under the control of the microprocessor, voltage
Handover module is according to the voltage range of vehicle battery, and regulation vehicle battery supplies the voltage of a DC/DC modules, specific to wrap
Include：
When microprocessor detects the voltage range of vehicle battery in 9V-16V, microprocessor switches mould by control voltage
Block makes a DC/DC modules be maintained at 12V work；
When microprocessor detects the voltage range of vehicle battery in 18V-32V, microprocessor is switched by control voltage
Module makes a DC/DC modules switch to 24V work；
When microprocessor detects the voltage range of vehicle battery in 27-48V, microprocessor switches mould by control voltage
Block makes a DC/DC modules switch to 36V work.
8. power-supply switching method according to claim 6, it is characterised in that also include：Car-mounted terminal work one section when
Between after, microprocessor detects the voltage range of vehicle battery again, and controls the voltage switching module according to testing result
Adjust the voltage that a DC/DC modules are obtained from vehicle battery.
9. a kind of car-mounted terminal, it is characterised in that the car-mounted terminal includes any described power supply switching in claim 1 to 5
Device.
10. a kind of vehicle, it is characterised in that the vehicle is provided with the vehicle termination described in claim 9.
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| CN110601526A (en) * | 2019-08-15 | 2019-12-20 | 苏州坤厚自动化科技有限公司 | Power supply conversion control circuit |
| CN110371053B (en) * | 2019-08-16 | 2024-03-26 | 慧翰微电子股份有限公司 | Management system and management method for T-BOX built-in standby battery |
| CN112751478A (en) * | 2020-12-31 | 2021-05-04 | 大运汽车股份有限公司 | Vehicle control unit power step-down circuit |
| CN114094809A (en) * | 2022-01-18 | 2022-02-25 | 深圳佑驾创新科技有限公司 | On-vehicle 12V 24V input low-voltage threshold switching circuit |
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| GB2510713A (en) * | 2014-01-24 | 2014-08-13 | Daimler Ag | Charge control unit for a vehicle manages power from second power supply to thermal preconditioning |
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| CN101513841A (en) * | 2009-03-26 | 2009-08-26 | 浙江大华技术股份有限公司 | Power supply control circuit for vehicle electronic equipment |
| CN102437554A (en) * | 2011-12-29 | 2012-05-02 | 厦门雅迅网络股份有限公司 | Method and circuit for protecting storage battery of on-board equipment |
| CN103368217A (en) * | 2012-04-11 | 2013-10-23 | 上海中兴派能能源科技有限公司 | Charging management system applied to lithium ion battery and lithium ion battery pack |
| CN103386934A (en) * | 2012-05-10 | 2013-11-13 | 航天信息股份有限公司 | Power supply device and power supply method of vehicle-mounted electronic device |
| CN103869858A (en) * | 2012-12-11 | 2014-06-18 | 厦门雅迅网络股份有限公司 | Vehicle-mounted electronic device power supply self-adaptation control method and system thereof |
| CN203660610U (en) * | 2014-01-14 | 2014-06-18 | 陈冠龙 | Vehicle power supply parking intelligent monitoring device |
| GB2510713A (en) * | 2014-01-24 | 2014-08-13 | Daimler Ag | Charge control unit for a vehicle manages power from second power supply to thermal preconditioning |
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| CN104842895A (en) | 2015-08-19 |
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Application publication date: 20150819 Assignee: Beijing Zhike chelian Technology Co.,Ltd. Assignor: BEIQI FOTON MOTOR Co.,Ltd. Contract record no.: X2022980018253 Denomination of invention: Power switching device and method, on-board terminal and vehicle Granted publication date: 20170606 License type: Common License Record date: 20221013 |