CN104842895A - Power supply switching device and method, vehicle-mounted terminal and vehicle - Google Patents
Power supply switching device and method, vehicle-mounted terminal and vehicle Download PDFInfo
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- CN104842895A CN104842895A CN201410592363.9A CN201410592363A CN104842895A CN 104842895 A CN104842895 A CN 104842895A CN 201410592363 A CN201410592363 A CN 201410592363A CN 104842895 A CN104842895 A CN 104842895A
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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 power supply switching device and method, a vehicle-mounted terminal and a vehicle. The power supply switching device comprises a micro-processor, a voltage switching module and a first DC/DC module, wherein the micro-processor is used for detecting the voltage range of a storage battery of the vehicle and controlling the voltage switching module according to the voltage range value of the storage battery of the vehicle, which is obtained through detection; the voltage switching module regulates the voltage supplied by the storage battery of the vehicle to the first DC/DC module according to the voltage range of the storage battery of the vehicle, under the control of the micro-processor, and sets a low-voltage threshold of the first DC/DC module obtaining voltage from the storage battery of the vehicle; the first DC/DC module obtains voltage from the storage battery of the vehicle under the regulation of the voltage switching module, switches the obtained voltage, and supplies a working voltage to the micro-processor and the parts of the vehicle-mounted terminal. The power supply switching device and method, disclosed by the invention solve the problem that the matching of the power supply of the existing vehicle-mounted terminal is complicated, the application range of the vehicle-mounted terminal is enlarged, and mounting efficiency of the vehicle-mounted terminal is improved.
Description
Technical field
The present invention relates to car-mounted terminal technical field, particularly, relate to a kind of power transfer device and method of car-mounted terminal, further relate to the car-mounted terminal comprising this power transfer device and the vehicle installing this car-mounted terminal.
Background technology
Car-mounted terminal generally adopts vehicle battery directly to power, and the storage battery of different automobile types has multiple voltage in the market, common are 12v/24v/36v several, car-mounted terminal is in order to adapt to the demand of different automobile types, need to support multiple power sources voltage, each voltage all will have under-voltage protection function simultaneously, this just requires that car-mounted terminal is wanted to distinguish different input voltages, and the low pressure thresholding different according to this voltage sets, so that when vehicle battery voltage is lower than threshold value, terminal should stop from automotive battery power taking, with increasing storage battery service life, the normal work of protection vehicle.
In order to adapt to the various on market; car-mounted terminal generally can support that Width funtion inputs; but current most of terminal all needs the threshold value manually arranging input voltage range and configuration under-voltage protection; this just causes the applicable area of car-mounted terminal limited; bring very big inconvenience to production and installation simultaneously; also easily there is maloperation, cause terminal normally to work.
According to regulation in Chinese transportation carrier standard " JT/T794-2011/6.4.1.2 power line voltage comformability ", the power line voltage comformability of car-mounted terminal is as shown in the table.
Table 1 electrical performance test parameter (unit: V)
According to regulation in " JT/T794-2011/6.4.1.6 under-voltage protection performance ", low pressure threshold value requires as follows:
---12V storage battery: 8.5V ± 0.5V;
---24V storage battery: 17.0V ± 1.0V;
---36V storage battery: 26.0V ± 1.0V;
When vehicle battery voltage is lower than threshold value, terminal should stop from automotive battery power taking, with increasing storage battery service life, and the normal work of protection vehicle.When automotive battery voltage resume exceedes low pressure high thresholdhigh, terminal should switch back-steam car storage battery power supply from emergency battery, recovers from automotive battery power taking.
Now car-mounted terminal commercially generally adopts the method manually arranging hardware jumper or manually arrange software parameter, so just bring a problem, when the battery tension that reality uses and the artificial voltage arranged do not mate, terminal possibly cannot work, or low pressure thresholding does not have due effect and the electricity of storage battery has been consumed.Such as car-mounted terminal connects 12V storage battery, and is manually arranged to 24V, and low pressure thresholding is 17V ± 1V, and at this moment terminal cannot work.Car-mounted terminal connects 24V storage battery, and be manually arranged to 12V, low pressure thresholding is 8.5V ± 0.5V, at this moment terminal may work until battery tension drops to about 8.5V always, the electricity of storage battery can be caused like this to deplete, have influence on the electric power supply that other is important, also have impact to the life-span of storage battery.
Summary of the invention
The object of this invention is to provide a kind of power transfer device and method of car-mounted terminal, mating loaded down with trivial details technical matters for solving car-mounted terminal power supply in the past.
To achieve these goals, the invention provides a kind of power transfer device of car-mounted terminal, comprise microprocessor, voltage switching module and a DC/DC module;
Described microprocessor, it is for detecting the voltage range of vehicle battery, and controls described voltage switching module according to the voltage range values of the vehicle battery detected;
Described voltage switching module, it is under described microprocessor-based control, according to the voltage range of vehicle battery, regulates the voltage of the described DC/DC module of vehicle battery supply;
A described DC/DC module, it is under the adjustment of described voltage switching module, obtains voltage from vehicle battery, and changes the voltage obtained, then provides operating voltage to each parts of described microprocessor and car-mounted terminal.
The beneficial effect of power transfer device of the present invention is: the invention solves car-mounted terminal power supply in the past and mate loaded down with trivial details problem, car-mounted terminal identifies storage battery power supply voltage automatically, do not need manual operation hardware jumper and configuration software parameter, decrease the probability occurring mistake, improve applicable area and the installation effectiveness of car-mounted terminal.
Preferably, a described DC/DC module employing model is the step-down controller chip of TPS54260.
The beneficial effect of above-mentioned optimal technical scheme is adopted to be: TPS54260 chip supports the input voltage of 3.5V-60V, with Enable Pin EN and state indication end PWRGOOD, when EN is greater than 1.25V, chip enable is effective, export 5V voltage, PWRGOOD effectively also output low level simultaneously, this characteristic is conducive to the voltage switching module of car-mounted terminal and the design of voltage detection module.
Preferably, described voltage switching module comprises the first aerotron Q1, the second aerotron Q2, resistance R3, resistance R4, resistance R7 and R8;
The base stage of described first aerotron Q1 is connected with two control ends of described microprocessor each via a resistance with the base stage of described second aerotron Q2, and each via a resistance eutral grounding, the emitter of described first aerotron Q1 connects the collecting electrode of described second aerotron Q2, one end of the collecting electrode contact resistance R7 of described first aerotron Q1, one end of the other end contact resistance R8 of resistance R7, one end of resistance R3, one end of resistance R4 and model are the Enable Pin of the step-down controller chip of TPS54260, the other end of resistance R8 connects the collecting electrode of described second aerotron Q2, the voltage output end of the other end connection vehicle battery of resistance R3 and model are the voltage input end of the step-down controller chip of TPS54260, and the voltage detecting end of described microprocessor is connected by a resistance, the other end of resistance R4 and the equal ground connection of emitter of the second aerotron Q2.
The beneficial effect of above-mentioned optimal technical scheme is adopted to be: the circuit of voltage switching module forms simple, and component number is few, and the break-make by two aerotrons realizes voltage switching.
Preferably, also comprise the 2nd DC/DC module, it is connected between a described DC/DC module and described microprocessor, is 3.3V, then exports to described microprocessor for a 5V voltage transitions described DC/DC module exported.
The beneficial effect of above-mentioned optimal technical scheme is adopted to be: to obtain 3.3V output voltage, power to microprocessor module and other.
Preferably, while described voltage switching module regulates the voltage of vehicle battery supply the one DC/DC module, for a described DC/DC module coupling is from the low pressure threshold value of vehicle battery acquisition voltage.
Adopt the beneficial effect of above-mentioned optimal technical scheme to be: when vehicle battery voltage is lower than low pressure threshold value, car-mounted terminal is stopped from vehicle battery power taking, is conducive to increasing storage battery service life, the normal work of protection vehicle.
Preferably, described microprocessor adopts Cortex-M3 kernel LPC1768 microprocessor.
Adopt the beneficial effect of above-mentioned optimal technical scheme to be: Cortex-M3 kernel LPC1768 microprocessor have low in energy consumption, speed fast, the feature of feature richness.
The present invention also provides a kind of power-supply switching method of car-mounted terminal, comprises the steps:
The voltage range of vehicle battery is detected by microprocessor;
Under described microprocessor-based control, voltage switching module, according to the voltage range of vehicle battery, regulates the voltage of vehicle battery supply the one DC/DC module;
Under the adjustment of described voltage switching module, a described DC/DC module obtains voltage from vehicle battery, and changes the voltage obtained, then provides operating voltage to each parts of described microprocessor and car-mounted terminal.
The beneficial effect of power-supply switching method of the present invention is: under judging which kind of power supply status storage battery is at present by the voltage detection module of microprocessor, and by control voltage handover module coupling car-mounted terminal power supply voltage, do not need manual operation hardware jumper and configuration software parameter, decrease the probability occurring mistake, improve applicable area and the installation effectiveness of car-mounted terminal.
Preferably, under described microprocessor-based control, voltage switching module, according to the voltage range of vehicle battery, regulates the voltage of vehicle battery supply the one DC/DC module, specifically comprises:
When microprocessor detects the voltage range of vehicle battery at 9V-16V, microprocessor makes a DC/DC module remain on 12V work by control voltage handover module;
When microprocessor detects the voltage range of vehicle battery at 18V-32V, microprocessor makes a DC/DC module switch to 24V work by control voltage handover module;
When microprocessor detects the voltage range of vehicle battery at 27-48V, microprocessor makes a DC/DC module switch to 36V work by control voltage handover module.
Adopt the beneficial effect of above-mentioned optimal technical scheme to be: by Microprocessor S3C44B0X voltage switching module, achieve a DC/DC module and automatically switch based on the voltage of 12V/24V/36V, simple to operate.
Preferably, also comprise: after car-mounted terminal work a period of time, microprocessor detects the voltage range of vehicle battery again, and controls described voltage switching module according to testing result and regulate the voltage that obtains from vehicle battery of a described DC/DC module.
Adopt the beneficial effect of above-mentioned optimal technical scheme to be: in car-mounted terminal working process, particularly when storage battery power shortage time, by the voltage range of repeated detection vehicle battery, to guarantee do not occur erroneous judgement and switch by mistake.
Preferably, while voltage switching module regulates the voltage of vehicle battery supply the one DC/DC module, for a described DC/DC module coupling is from the low pressure threshold value of vehicle battery acquisition voltage.
The beneficial effect of above-mentioned optimal technical scheme is adopted to be: coupling the one DC/DC module for power supply voltage while; set a DC/DC module obtains voltage low pressure threshold value from vehicle battery; when vehicle battery voltage is lower than low pressure threshold value; car-mounted terminal is stopped from vehicle battery power taking; be conducive to increasing storage battery service life, the normal work of protection vehicle.
Technical scheme of the present invention also comprises a kind of car-mounted terminal, and this car-mounted terminal comprises the power transfer device described in above-mentioned arbitrary technical scheme.
Technical scheme of the present invention also comprises a kind of vehicle, it is characterized in that, this vehicle is provided with above-mentioned vehicle termination.
Car-mounted terminal of the present invention and vehicle comprise above-mentioned power transfer device, and therefore it has above-mentioned advantage equally.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.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 circuit 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.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As shown in Figure 1, this gives a kind of power transfer device of car-mounted terminal, comprise microprocessor, voltage switching module, a DC/DC module and the 2nd DC/DC module;
Described microprocessor, it is for detecting the voltage range of vehicle battery, and controls described voltage switching module according to the voltage range values of the vehicle battery detected;
Described voltage switching module, it is under described microprocessor-based control, according to the voltage range of vehicle battery, regulate the voltage of the described DC/DC module of vehicle battery supply, and be a DC/DC module coupling obtains voltage low pressure threshold value from vehicle battery;
A described DC/DC module, it is under the adjustment of described voltage switching module, obtains voltage from vehicle battery, and changes the voltage obtained, then provides operating voltage to each parts of described microprocessor and car-mounted terminal;
Described 2nd DC/DC module, it is connected between a described DC/DC module and described microprocessor, is 3.3V, then exports to described microprocessor for a 5V voltage transitions described DC/DC module exported.
In the present embodiment, described microprocessor adopts Cortex-M3 kernel LPC1768 microprocessor, have that low in energy consumption, speed is fast, the feature of feature richness, mainly complete the collection etc. of the control of power supply, the setting of real-time clock, the reception of locating data and parsing, the storage of data and backup, the identification of incoming signal, screen display control, the control of communication module, the data receiver of CAN and switching value.
In the present embodiment, a described DC/DC module employing model is the step-down controller chip of TPS54260, TPS54260 is a step-down controller of Ti company, support the input voltage of 3.5V-60V, chip is with Enable Pin EN and state indication end PWRGOOD, and when EN is greater than 1.25V, chip enable is effective, export 5V voltage, simultaneously PWRGOOD effectively also output low level.
Utilize the above-mentioned characteristic of this TPS54260 chip, the present embodiment devises corresponding voltage switching module, and as shown in Figure 2, described voltage switching module comprises the first aerotron Q1, the second aerotron Q2, resistance R3, resistance R4, resistance R7 and R8.
The base stage of described first aerotron Q1 is connected with two control end PWR_CTL1 and PWR_CTL2 of described microprocessor with resistance R11 each via resistance R13 with the base stage of described second aerotron Q2, and each via resistance R14 and resistance R12 ground connection, the emitter of described first aerotron Q1 connects the collecting electrode of described second aerotron Q2, one end of the collecting electrode contact resistance R7 of described first aerotron Q1, one end of the other end contact resistance R8 of resistance R7, one end of resistance R3, one end of resistance R4 and model are the Enable Pin EN of the step-down controller chip of TPS54260, the other end of resistance R8 connects the collecting electrode of described second aerotron Q2, the voltage output end UB of the other end connection vehicle battery of resistance R3 and model are the voltage input end VIN of the step-down controller chip of TPS54260, and the voltage detecting end UB_AD of described microprocessor is connected by resistance R1, the other end of resistance R4 and the equal ground connection of emitter of the second aerotron Q2.Wherein, the voltage detecting end UB_AD of described microprocessor connects its built-in voltage detection module, and described model is that the voltage input end VIN of the step-down controller chip of TPS54260 is by resistance R9 coupled condition indication end PWRGOOD.
Fig. 2 illustrates the associated peripheral circuits of TPS54260 chip simultaneously, series capacity C1 between BOOT end and PH end, parallel diode D1 is held at PH end and GND, diode cathode connects one end of PH end and inductance L 1, diode anode connects GND end, be parallel with electric capacity C2, C3, C4 between the other end of inductance L 1 and GND hold, GND held ground connection simultaneously.The other end of inductance L 1 is also connected with resistance R2 and R6 of series connection, and one end that R6 and R2 connects connects VSENSE end, the other end ground connection of R6.The other end of resistance L1 is as 5V power voltage supply end, and it connects connection terminal TP1 ~ TP60, and each parts realizing car-mounted terminal are powered.Resistance R5 and electric capacity C10 is in parallel with electric capacity C9 again after connecting, and this circuit parallel connects the CMOP end of TPS54260 chip.TPS54260 chip SS/TR holds by electric capacity C8 ground connection, and RT/CLK end is by resistance R10 ground connection, and GND1-GND6 end all directly ground connection.In addition, the voltage output end UB of vehicle battery is by three parallel capacitance C5, C6, C7 ground connection.
Voltage detection module is integrated with in described microprocessor, the input end of this voltage detection module and the voltage detecting end UB_AD of corresponding described microprocessor, it for detecting the voltage range of vehicle battery before car-mounted terminal powers on and after car-mounted terminal work a period of time, to realize the correction of the voltage range to vehicle battery.
What car-mounted terminal carried out electrical source exchange by above-mentioned power transfer device is mainly divided into three steps:
First, the voltage range of vehicle battery is detected by microprocessor;
Secondly, under described microprocessor-based control, voltage switching module, according to the voltage range of vehicle battery, regulates the voltage of vehicle battery supply the one DC/DC module, and is a described DC/DC module coupling obtains voltage low pressure threshold value from vehicle battery;
Finally, under the adjustment of described voltage switching module, a described DC/DC module obtains voltage from vehicle battery, and changes the voltage obtained, then provides operating voltage to each parts of described microprocessor and car-mounted terminal.
The car-mounted terminal of the present embodiment supports the input of 9-48V Width funtion, and voltage switching module controls a DC/DC module at the voltage switching of 12V/24V/36V by two aerotrons, gives tacit consent to and works at 12V.When after microprocessor work, detect battery tension scope by its voltage detection module, when battery tension scope is at 9-16V, keep 12V work; When battery tension scope is at 18-32V, be switched to 24V work; When battery tension scope is at 27-48V, be switched to 36V work.
As shown in Figure 3, the power transfer device of the car-mounted terminal of the present embodiment and the workflow of method as follows.
First, car-mounted terminal powers on.
Secondly, whether effectively detect vehicle ACC signal, if invalid, carry out low-power consumption mode, otherwise start power transfer device, the voltage detection module on microprocessor is started working.
Again, according to the battery tension scope that voltage detection module detects, point following three kinds of situations perform electrical source exchange.
1) when the voltage range of vehicle battery being detected at 9V-16V, Microprocessor S3C44B0X first aerotron Q1 and the second aerotron Q2 all remains open, resistance R3 and resistance R4 dividing potential drop, by arranging the resistance of corresponding resistor, control model is that the step-down controller chip of TPS54260 remains on 12V work, when UB is greater than 8.5V, C point voltage is greater than 1.25V, TPS54260 chip normally works, and makes TPS54260 chip output voltage be 5V, low pressure threshold value is set to 8.5V ± 0.5V simultaneously.
2) when the voltage range of vehicle battery being detected at 18V-32V, Microprocessor S3C44B0X first aerotron Q1 disconnects, second aerotron Q2 closes, with resistance R3 dividing potential drop after resistance R4 and resistance R8 parallel connection, by arranging the resistance of corresponding resistor, controlling model is that the step-down controller chip of TPS54260 remains on 24V work, when UB is greater than 17V, C point voltage is greater than 1.25V, makes TPS54260 chip output voltage be 5V, low pressure threshold value is set to 17V ± 1V simultaneously.
3) when the voltage range of vehicle battery being detected at 27V-48V, Microprocessor S3C44B0X first aerotron Q1 and the second aerotron Q2 is closed, with resistance R3 dividing potential drop after resistance R4, resistance R7, resistance R8 parallel connection, by arranging the resistance of corresponding resistor, control model is that the step-down controller chip of TPS54260 remains on 36V work, and when UB is greater than 26V, C point voltage is greater than 1.25V, make its output voltage be 5V, low pressure threshold value is set to 26.0V ± 1.0V simultaneously.
When the situation of power shortage likely appears in the parked mistake of vehicle storage battery of a specified duration, such as, the storage battery of original 24V was placed for a long time, and voltage likely occurs lower than 16V, was the storage battery avoiding car-mounted terminal originally should will be 24V, was identified as 12V storage battery.Therefore, in car-mounted terminal working process, microprocessor also needs to be corrected the voltage range of vehicle battery in real time by voltage detection module, and controls described voltage switching module according to compensation value, to ensure that erroneous judgement normally and not appears in the operation of voltage switching module.Such as, originally should be the storage battery of 24V, 12V is dropped to after vehicle parked a period of time, when vehicle starts again, this storage battery is identified as 12V by car-mounted terminal, and works under 12V system, through after a period of time, storage battery is full of and becomes 24V, and car-mounted terminal detects 24V by voltage detection module again, and by systematic evaluation to 24V.
It is noted that when after vehicle launch, storage battery meeting automatic charging, charging duration has difference according to different automobile types, and this time needs are demarcated.
The car-mounted terminal of the present embodiment and the vehicle of this car-mounted terminal of installation include above-mentioned power transfer device, and therefore it has above-mentioned each advantage equally.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (12)
1. a power transfer device for car-mounted terminal, is characterized in that, comprises microprocessor, voltage switching module and a DC/DC module;
Described microprocessor, it is for detecting the voltage range of vehicle battery, and controls described voltage switching module according to the voltage range values of the vehicle battery detected;
Described voltage switching module, it is under described microprocessor-based control, according to the voltage range of vehicle battery, regulates the voltage of the described DC/DC module of vehicle battery supply;
A described DC/DC module, it is under the adjustment of described voltage switching module, obtains voltage from vehicle battery, and changes the voltage obtained, then provides operating voltage to each parts of described microprocessor and car-mounted terminal.
2. power transfer device according to claim 1, is characterized in that, a described DC/DC module employing model is the step-down controller chip of TPS54260.
3. power transfer device according to claim 2, is characterized in that, described voltage switching module comprises the first aerotron Q1, the second aerotron Q2, resistance R3, resistance R4, resistance R7 and R8;
The base stage of described first aerotron Q1 is connected with two control ends of described microprocessor each via a resistance with the base stage of described second aerotron Q2, and each via a resistance eutral grounding, the emitter of described first aerotron Q1 connects the collecting electrode of described second aerotron Q2, one end of the collecting electrode contact resistance R7 of described first aerotron Q1, one end of the other end contact resistance R8 of resistance R7, one end of resistance R3, one end of resistance R4 and model are the Enable Pin of the step-down controller chip of TPS54260, the other end of resistance R8 connects the collecting electrode of described second aerotron Q2, the voltage output end of the other end connection vehicle battery of resistance R3 and model are the voltage input end of the step-down controller chip of TPS54260, and the voltage detecting end of described microprocessor is connected by a resistance, the other end of resistance R4 and the equal ground connection of emitter of the second aerotron Q2.
4. power transfer device according to claim 1, it is characterized in that, also comprise the 2nd DC/DC module, it is connected between a described DC/DC module and described microprocessor, 5V voltage transitions for a described DC/DC module being exported is 3.3V, then exports to described microprocessor.
5. power transfer device according to claim 1, it is characterized in that, while described voltage switching module regulates the voltage of vehicle battery supply the one DC/DC module, for a described DC/DC module coupling is from the low pressure threshold value of vehicle battery acquisition voltage.
6. according to described power transfer device arbitrary in claim 1 to 5, it is characterized in that, described microprocessor adopts Cortex-M3 kernel LPC1768 microprocessor.
7. a power-supply switching method for car-mounted terminal, is characterized in that, comprising:
The voltage range of vehicle battery is detected by microprocessor;
Under described microprocessor-based control, voltage switching module, according to the voltage range of vehicle battery, regulates the voltage of vehicle battery supply the one DC/DC module;
Under the adjustment of described voltage switching module, a described DC/DC module obtains voltage from vehicle battery, and changes the voltage obtained, then provides operating voltage to each parts of described microprocessor and car-mounted terminal.
8. power-supply switching method according to claim 7, is characterized in that, under described microprocessor-based control, voltage switching module, according to the voltage range of vehicle battery, regulates the voltage of vehicle battery supply the one DC/DC module, specifically comprises:
When microprocessor detects the voltage range of vehicle battery at 9V-16V, microprocessor makes a DC/DC module remain on 12V work by control voltage handover module;
When microprocessor detects the voltage range of vehicle battery at 18V-32V, microprocessor makes a DC/DC module switch to 24V work by control voltage handover module;
When microprocessor detects the voltage range of vehicle battery at 27-48V, microprocessor makes a DC/DC module switch to 36V work by control voltage handover module.
9. power-supply switching method according to claim 7, it is characterized in that, also comprise: after car-mounted terminal work a period of time, microprocessor detects the voltage range of vehicle battery again, and controls described voltage switching module according to testing result and regulate the voltage that obtains from vehicle battery of a described DC/DC module.
10. according to described power-supply switching method arbitrary in claim 7 to 9, it is characterized in that, while voltage switching module regulates the voltage of vehicle battery supply the one DC/DC module, for a described DC/DC module coupling is from the low pressure threshold value of vehicle battery acquisition voltage.
11. 1 kinds of car-mounted terminals, is characterized in that, this car-mounted terminal comprises arbitrary described power transfer device in claim 1 to 6.
12. 1 kinds of vehicles, is characterized in that, this vehicle is provided with vehicle termination according to claim 11.
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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 |
| 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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| 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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| 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 |
| CN110371053A (en) * | 2019-08-16 | 2019-10-25 | 慧翰微电子股份有限公司 | Reserve battery management system and management method built in T-BOX |
| 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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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 |
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