CN216872906U - Power supply system of road side unit - Google Patents
Power supply system of road side unit Download PDFInfo
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- CN216872906U CN216872906U CN202123383647.1U CN202123383647U CN216872906U CN 216872906 U CN216872906 U CN 216872906U CN 202123383647 U CN202123383647 U CN 202123383647U CN 216872906 U CN216872906 U CN 216872906U
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Abstract
The utility model relates to a power supply system of a road side unit, which comprises a solar battery, a storage battery, a power supply detection module, a power supply switching module and a voltage transformation module, wherein the solar battery detection module in the power supply detection module is used for detecting the running data of the solar battery and sending the running data to a main control module; a storage battery detection module in the power supply detection module is used for detecting the output voltage of the storage battery and sending the output voltage to the main control module; the power supply switching module is used for controlling the solar cell or the storage battery to supply power according to the switching signal of the main control module; the voltage transformation module is arranged between the power supply switching module and the road side unit and used for providing a plurality of output voltage ends, and each output voltage end is connected with one power utilization unit in the road side unit. Through adopting the solar energy power supply, under the outage condition suddenly, can maintain equipment normal operating through solar energy, guarantee the trackside unit and provide road information protection personnel safety for the coming and going vehicle, and the solar energy power supply can make trackside unit become independent mobile device.
Description
Technical Field
The utility model belongs to the technical field of vehicle networking, and particularly relates to a road side unit power supply system.
Background
The Road Side Unit (RSU) belongs to equipment in the vehicle networking V2X system, and the V2X system acquires Road condition information in front through information transmission between a vehicle and the Road Side Unit, so that collision risks which may occur are calculated and predicted, and drivers are warned through different sound, light, display equipment and the like.
Currently, the roadside unit uses AC220V power or poe (power Over ethernet), active ethernet) power.
However, the two power supply modes both need to consume electric quantity, large-area laying of the equipment consumes a large amount of electric energy, and the two power supply modes have the problems that large-area power failure can occur and the equipment cannot be supplied with power under the condition of various natural disasters.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a road side unit power supply system aiming at the defects of the prior art. The purpose is realized by the following technical scheme:
the utility model provides a power supply system of a road side unit, which is used for the road side unit and comprises a solar battery, a storage battery, a power supply detection module, a power supply switching module, a voltage transformation module and a main control module, wherein the power supply detection module comprises a solar battery detection module and a storage battery detection module;
the solar cell detection module is respectively connected with the solar cell and the main control module and is used for detecting the operation data of the solar cell and sending the operation data to the main control module;
the storage battery detection module is respectively connected with the storage battery and the main control module, and is used for detecting the output voltage of the storage battery and sending the output voltage to the main control module;
the power supply switching module is respectively connected with the solar battery, the storage battery and the main control module and is used for controlling the solar battery to supply power or the storage battery to supply power according to a switching signal of the main control module;
the voltage transformation module is arranged between the power supply switching module and the road side unit and used for providing a plurality of output voltage ends, and each output voltage end is connected with one power utilization unit in the road side unit.
According to the road side unit power supply system provided by the utility model, the solar battery is used for supplying power to the road side unit on one hand and charging the storage battery on the other hand, the power supply detection module detects the operation data of the solar battery and the output voltage of the storage battery in real time and sends the operation data to the main control module, so that the power supply switching module switches to the solar battery power supply or the storage battery power supply according to the switching signal sent by the main control module, and then the voltage transformation module converts the output voltage of the storage battery or the power generation voltage provided by the solar battery into a plurality of power supply voltages and respectively supplies the power supply voltages to different power utilization units in the road side unit.
Therefore, the solar power supply mode is adopted, the electric energy is saved, the energy consumption is reduced, the normal operation of the equipment can be maintained through the solar power supply under the emergency conditions of sudden power failure and the like, the road side unit can normally provide road information for vehicles coming and going, the safety of personnel is protected, the road side unit can be changed into independent movable equipment through the solar power supply, and the cables do not need to be laid for the installation of the road side unit.
In addition, according to the road side unit power supply system provided by the utility model, the following additional technical characteristics can be provided:
in some embodiments of the utility model, the roadside unit power supply system further includes:
and the charging control module is respectively connected with the solar battery and the storage battery, wherein a charging management chip is arranged in the charging control module and is used for converting the output voltage of the solar battery into a stable voltage for charging the storage battery.
In some embodiments of the utility model, the battery is a lead acid battery or a lithium battery.
In some embodiments of the utility model, the solar cell detection module comprises an illumination detection module, a solar voltage detection module; the solar voltage detection module is used for detecting the output voltage of the solar battery and sending the output voltage to the main control module; the illumination detection module is used for detecting the current illumination of the solar cell and sending the current illumination to the main control module.
In some embodiments of the present invention, the illumination detection module comprises a photoresistor and a first operational amplifier; the photoresistor is connected with the in-phase end of the first operational amplifier; and the output end of the first operational amplifier is connected with the main control module.
In some embodiments of the utility model, the solar voltage detection module comprises a second operational amplifier and a first voltage follower; the in-phase end of the second operational amplifier is connected with the solar cell; the inverting end of the second operational amplifier is connected with the voltage dividing resistor which is connected in series; the output end of the second operational amplifier is connected with the in-phase end of the first voltage follower, and the output end of the first voltage follower is connected with the main control module.
In some embodiments of the utility model, the battery detection module comprises a third operational amplifier and a second voltage follower; the in-phase end of the third operational amplifier is connected with the storage battery; the inverting end of the third operational amplifier is connected with the voltage dividing resistors which are connected in series; the output end of the third operational amplifier is connected with the in-phase end of the second voltage follower, and the output end of the second voltage follower is connected with the main control module.
In some embodiments of the utility model, the power switching module comprises a solar cell switching circuit and a battery switching circuit; the solar cell switch circuit is respectively connected with the solar cell and the voltage transformation module; the storage battery switch circuit is respectively connected with the storage battery and the voltage transformation module.
In some embodiments of the present invention, the voltage transformation module includes two stages of voltage transformation sub-modules, which are a first stage voltage transformation sub-module and a second stage voltage transformation sub-module connected in series, respectively, where the second stage voltage transformation sub-module includes a plurality of voltage transformation sub-modules, and each voltage transformation sub-module provides an output voltage terminal for providing voltage to the power consumption unit connected thereto.
In some embodiments of the present invention, the second-stage voltage transformation submodule includes four voltage transformation submodules with different output voltages; the first voltage transformation sub-module is used for being connected with a power management chip PMIC of the road side unit, the second voltage transformation sub-module is connected with a 5G module of the road side unit, and the third voltage transformation sub-module and the fourth voltage transformation sub-module are respectively connected to different power utilization units of a V2X module of the road side unit.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 schematically shows a structural schematic diagram of a roadside unit power supply system according to an embodiment of the present invention;
fig. 2 schematically shows a circuit schematic of an illumination detection module according to an embodiment of the utility model;
FIG. 3 schematically illustrates a circuit schematic of a solar voltage detection module according to an embodiment of the present invention;
FIG. 4 schematically illustrates a circuit schematic of a power switching module according to an embodiment of the utility model;
fig. 5 schematically shows a circuit schematic of a voltage transformation module according to an embodiment of the utility model.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Fig. 1 schematically shows a schematic structural diagram of a roadside unit power supply system according to an embodiment of the present invention, as shown in fig. 1, the roadside unit power supply system includes a solar cell 10, a storage battery 20, a power detection module 40, a power switching module 50, a voltage transformation module 60, and a main control module 70, and the power detection module 40 includes a solar cell detection module 401 and a storage battery detection module 402.
The solar cell detection module 401 is respectively connected with the solar cell 10 and the main control module 70, and is used for detecting the solar cell operation data and sending the solar cell operation data to the main control module 70;
the storage battery detection module 402 is respectively connected with the storage battery 20 and the main control module 70, and is configured to detect an output voltage of the storage battery and send the output voltage to the main control module 70;
the power switching module 50 is respectively connected to the solar cell 10, the storage battery 20 and the main control module 70, and is configured to control the solar cell 10 to supply power or the storage battery 20 to supply power according to a switching signal of the main control module 70;
the transforming module 60 is disposed between the power switching module 50 and the road side units, and the transforming module 60 is used for providing a plurality of output voltage ends, and each output voltage end is connected with one of the road side units.
It should be noted that the switching signal of the main control module 70 is obtained according to the solar cell operation data sent by the solar detection module 401 and the storage battery output voltage sent by the storage battery detection module 402, and the switching signal may be an electrical signal obtained according to a voltage comparison circuit or a digital signal converted by an electrical signal, which is not specifically limited in this scheme.
According to the road side unit power supply system provided by the utility model, the solar battery is used for supplying power to the road side unit on one hand and charging the storage battery module on the other hand, the power supply detection module detects the operation data of the solar battery and the output voltage of the storage battery in real time and sends the operation data to the main control module, so that the power supply switching module switches to the solar battery power supply or the storage battery power supply according to the switching signal sent by the main control module, and then the transformation module converts the output voltage of the storage battery or the power generation voltage provided by the solar battery into a plurality of power supply voltages and respectively supplies the power supply voltages to different power utilization units in the road side unit.
Therefore, the solar power supply mode is adopted, the electric energy is saved, the energy consumption is reduced, the normal operation of the equipment can be maintained through the solar power supply under the emergency condition of natural disasters and the like, the road side unit can normally provide road information for vehicles coming and going to protect personnel safety, the road side unit can be changed into independent movable equipment through the solar power supply, and the cable does not need to be laid for the installation of the road side unit.
In some embodiments of the present invention, as shown in fig. 1, the power supply system further includes a charging control module 30, which is connected to the solar cell 10 and the storage battery 20, respectively. The charging management chip is arranged in the charging control module 30, and is used for converting the output voltage provided by the solar battery into the stable voltage for charging the storage battery 20, so that the problem of unstable voltage directly output by the solar battery 10 is avoided, and the service life of the storage battery is prolonged.
When the storage battery 20 is a lead-acid battery, a CN3767 type charge management chip can be selected, and typical values of the charge voltage are 14.8V and 13.55V in the overcharge and float charge modes respectively; when the storage battery 20 is a lithium battery, a charging management chip of CN3722 model can be selected, typical values of charging voltage are 12.6 and 12V respectively in the overcharging and floating charging modes, and both charging management chips can automatically track the maximum output power point of the solar battery 10, and can utilize the output power of the solar battery 10 to the maximum extent.
As can be seen from the above examples, the battery 20 may be a lead-acid battery or a lithium battery. Under the condition of sufficient illumination in daytime, the solar cell 10 supplies power to the road side unit on the one hand, charges the storage battery 20 on the other hand, stores energy, and switches to the storage battery for power supply under the condition of no illumination at night, and discharges power to the road side unit through the storage battery 20.
It should be noted that the storage battery 20 mainly includes a cell and a protection plate. The protection board plays a role in protecting the battery core, when the charging voltage is greater than the rated voltage of the storage battery, the circuit on the protection board is disconnected, and the charging is stopped. When the storage battery discharges, and the discharge voltage is lower than the lowest voltage of the storage battery, the circuit on the protection board is disconnected, and the discharge stops.
In some embodiments of the present invention, the solar cell 10 may include a plurality of solar panels connected in series or in parallel to output power to meet the power requirements of the electric equipment roadside unit.
Alternatively, the solar cell panel may be any one of a single crystalline silicon solar cell panel, a polycrystalline silicon solar cell panel, and a thin film solar cell panel. The photoelectric conversion efficiency of the monocrystalline silicon solar cell is about 18%, the highest photoelectric conversion efficiency reaches 24%, and the cost is high; the broadcasting and television conversion efficiency of the polycrystalline silicon solar cell is about 16%, and the cost is lower than that of a monocrystalline silicon solar cell panel; the thin film solar cell is made of a plurality of materials, and each material has different photoelectric conversion efficiency and different manufacturing cost.
In some embodiments of the present invention, the solar cell detection module 401 specifically includes two independent illumination detection modules and a solar voltage detection module.
The illumination detection module is configured to detect current illumination of the solar cell 10 and send the current illumination to the main control module 70, and the solar voltage detection module is configured to detect an output voltage of the current solar cell 10 and send the output voltage to the main control module.
In other embodiments of the present invention, as shown in FIG. 2, the illumination detection module includes a photoresistor 1 and a first operational amplifier LM 358. The photoresistor 1 is connected with the in-phase end of the first operational amplifier LM 358; the output terminal AD0 of the first operational amplifier LM358 is connected to the main control module 70.
When light is emitted, the resistance of the photoresistor 1 is reduced, the flowing current is increased, the voltages at the two ends of the resistor R2 are increased, the input voltage of the in-phase end of the first operational amplifier is increased, the output end AD0 outputs the light voltage, and the main control module 70 can judge whether the light is emitted or not by using the light voltage.
As can be understood by those skilled in the art, the resistor and the capacitor in the illumination detection module belong to peripheral devices of the circuit, and are used for realizing the detection function of the illumination voltage.
In other embodiments of the present invention, as shown in fig. 3, the solar voltage detection module includes a second operational amplifier U1 and a first voltage follower U2. The in-phase end of the second operational amplifier U1 is connected to the solar cell 10, the inverting end of the second operational amplifier U1 is connected to the voltage dividing resistors R15 and R16 which are connected in series, the output end Vout of the second operational amplifier U1 is connected to the in-phase end of the first voltage follower U2, and the output end of the first voltage follower is connected to the main control module 70.
When the solar voltage at the non-inverting terminal of the second operational amplifier U1 exceeds the reference voltage at the inverting terminal, the output voltage Vout at the output terminal increases, which indicates that the current solar voltage can meet the power supply requirement of the road side unit 70. The first voltage follower U2 is used for stabilizing the output voltage Vout at the output end of the second operational amplifier U1, thereby improving the loading capacity.
As can be understood by those skilled in the art, the resistor, the capacitor and the diode in the solar voltage detection module belong to peripheral devices of the circuit, and are used for realizing the detection function of the solar power generation voltage.
It should be added that the storage battery detection module specifically includes a third operational amplifier and a second voltage follower, and the circuit connection principle of the storage battery detection module is the same as the circuit connection principle of the solar voltage detection module shown in fig. 3, that is, the non-inverting terminal of the third operational amplifier is connected to the storage battery 20, the inverting terminal of the third operational amplifier is connected to the voltage dividing resistor connected in series, the output terminal of the third operational amplifier is connected to the non-inverting terminal of the second voltage follower, and the output terminal of the second voltage follower is connected to the main control module 70.
When the output voltage of the storage battery at the in-phase end of the third operational amplifier exceeds the reference voltage at the inverting end of the third operational amplifier, the output voltage of the output end of the third operational amplifier is increased, and the output voltage of the storage battery can meet the power supply requirement of the road side unit.
In some embodiments of the present invention, as shown in fig. 4, the power switching module 50 includes a solar cell switching circuit and a storage battery switching circuit, the solar cell switching circuit is connected to the solar cell 10 and the voltage transformation module 60, respectively, and the storage battery switching circuit is connected to the storage battery 20 and the voltage transformation module 60, respectively.
The solar cell switch circuit is used as a solar power generation path, and the storage battery switch circuit is used as a storage battery discharge path, and is controlled to be switched on or switched off according to a switching signal sent by the main control module 70, so that switching of two paths is realized.
As can be seen from fig. 4, both the two paths are switched by MOS transistors.
In some embodiments of the present invention, the voltage transformation module 60 may include two stages of voltage transformation sub-modules, respectively, a first stage of voltage transformation sub-module and a second stage of voltage transformation sub-module connected in series, and the second stage of voltage transformation sub-module includes a plurality of voltage transformation sub-modules, each of which provides an output voltage terminal for providing voltage to the power utilization unit in the road side unit connected thereto.
Optionally, the power utilization unit requiring power supply in the road side unit may include a V2X module, a 5G module, a main control module 70, and the like.
Optionally, the main control module may be disposed in the road side unit, or may be disposed outside the road side unit.
It should be noted that, since the main control module 70 (i.e. the CPU minimum system) needs various power supply voltages, such as 3.3V and 1.5V, the output voltage terminal of the voltage transformer sub-module needs to be connected to a PMIC (power management chip) to convert the various power supply voltages needed by the main control module 70. And the V2X module includes a control circuit and a radio frequency circuit, which require different supply voltages.
Based on this, the second stage transformer sub-module may include four output voltages
Different voltage transformation sub-modules. The first voltage transformation sub-module is used for being connected with a PMIC of the road side unit, the second voltage transformation sub-module is connected with a 5G module of the road side unit, and the third voltage transformation sub-module and the fourth voltage transformation sub-module are respectively connected to different power utilization units of a V2X module of the road side unit.
In specific implementation, as shown in fig. 5, the first-stage voltage transformation submodule may be implemented by using a voltage reduction chip, and is configured to uniformly convert the output voltage of the solar cell and the output voltage of the storage battery into a voltage, and then convert the voltage into a voltage required by a corresponding unit through the voltage reduction chip used by each voltage transformation submodule in the second-stage voltage transformation submodule.
As can be seen from fig. 5, when the solar battery is used for supplying power, the 4 voltage transformation sub-modules are exemplarily provided, and when the solar battery is used for supplying power, the output voltage of the 18V solar battery is firstly converted into 7V through the DC-DC voltage reduction 1, then the 7V voltage is converted into SYS _4_2V through the DC-DC voltage reduction 2, and then the voltage is converted into the voltage required by the main control module through the PMIC. And then the voltage is converted into 5G _4V by a DC-DC voltage reduction unit 3 to supply power to a 5G module, is converted into V2X _4V by a DC-DC voltage reduction unit 4, is converted into V2X _5V by a DC-DC voltage reduction unit 5, and supplies power to a V2X module. When the storage battery is used for supplying power, the output voltage of the storage battery with the voltage of 12V is only converted into the voltage of 7V through the voltage reduction of DC-DC1, and the conversion of the subsequent voltage reduction chip is not changed.
The DC-DC voltage 4 is converted into V2X _4V to supply power to the control circuit in the V2X module, and the DC-DC voltage 5 is converted into V2X _5V to supply power to the rf circuit in the V2X module.
Further, the DC-DC voltage reduction 1 can be realized by selecting TPS54561, has a wide input voltage range of 4.5V-60V, and can adapt to the input voltage range of solar energy under low illumination intensity. The DC-DC voltage reduction 2-5 can be realized by TPS 62130. It can be seen that the output voltage of the solar cell is higher than the output voltage of the storage battery because the voltage for charging the storage battery must be higher than the voltage of the storage battery, which ensures that the storage battery is fully charged and prevents the voltage of the storage battery from flowing backwards.
According to the utility model, the power supply detection module detects the output voltage of the solar battery and the output voltage of the storage battery in real time, and when the illumination is sufficient in the daytime, the power supply switching module is switched to the solar battery for supplying power, so that the solar battery supplies power to the road side unit on one hand and charges the storage battery on the other hand; when the road side unit is not lighted at night, the road side unit is switched to the storage battery for power supply, and therefore the road side unit is powered by the storage battery. The voltage provided by the solar battery or the storage battery needs to be converted into the voltage required by each module in the road side unit through the voltage transformation module.
Therefore, the solar power supply mode is adopted, the electric energy is saved, the energy consumption is reduced, the normal operation of the equipment can be maintained under the emergency conditions such as emergency power failure, the road side unit can normally provide road information for vehicles coming and going to protect personnel safety, the road side unit can be changed into independent movable equipment through the solar power supply, and the cable does not need to be laid for the installation of the road side unit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A power supply system of a road side unit is used for the road side unit and is characterized by comprising a solar cell, a storage battery, a power supply detection module, a power supply switching module, a voltage transformation module and a main control module, wherein the power supply detection module comprises a solar cell detection module and a storage battery detection module;
the solar cell detection module is respectively connected with the solar cell and the main control module, and is used for detecting the solar cell operation data and sending the solar cell operation data to the main control module;
the storage battery detection module is respectively connected with the storage battery and the main control module, and is used for detecting the output voltage of the storage battery and sending the output voltage to the main control module;
the power supply switching module is respectively connected with the solar battery, the storage battery and the main control module and is used for controlling the solar battery to supply power or the storage battery to supply power according to a switching signal of the main control module;
the voltage transformation module is arranged between the power supply switching module and the road side unit and used for providing a plurality of output voltage ends, and each output voltage end is connected with one power utilization unit in the road side unit.
2. The roadside unit power supply system of claim 1 further comprising:
a charging control module connected to the solar cell and the storage battery, respectively;
and a charging management chip is arranged in the charging control module and used for converting the output voltage of the solar battery into a stable voltage for charging the storage battery.
3. The roadside unit power supply system of claim 1, wherein the solar cell detection module comprises an illumination detection module and a solar voltage detection module;
the solar voltage detection module is used for detecting the output voltage of the solar battery and sending the output voltage to the main control module;
the illumination detection module is used for detecting the current illumination of the solar cell and sending the current illumination to the main control module.
4. The roadside unit power supply system of claim 3 wherein the illumination detection module includes a photoresistor and a first operational amplifier;
the photoresistor is connected with the in-phase end of the first operational amplifier;
and the output end of the first operational amplifier is connected with the main control module.
5. The roadside unit power supply system of claim 3 wherein the solar voltage detection module includes a second operational amplifier and a first voltage follower;
the in-phase end of the second operational amplifier is connected with the solar cell;
the inverting end of the second operational amplifier is connected with the voltage dividing resistor which is connected in series;
the output end of the second operational amplifier is connected with the in-phase end of the first voltage follower, and the output end of the first voltage follower is connected with the main control module.
6. The roadside unit power supply system of claim 1, wherein the battery detection module includes a third operational amplifier and a second voltage follower;
the in-phase end of the third operational amplifier is connected with the storage battery;
the inverting end of the third operational amplifier is connected with the voltage dividing resistors which are connected in series;
the output end of the third operational amplifier is connected with the in-phase end of the second voltage follower, and the output end of the second voltage follower is connected with the main control module.
7. The roadside unit power supply system of claim 1 wherein the power switching module includes a solar cell switching circuit and a battery switching circuit;
the solar cell switch circuit is respectively connected with the solar cell and the voltage transformation module;
the storage battery switch circuit is respectively connected with the storage battery and the voltage transformation module.
8. The roadside unit power supply system of claim 1, wherein the voltage transformation module comprises two stages of voltage transformation sub-modules, a first stage voltage transformation sub-module and a second stage voltage transformation sub-module connected in series, wherein the second stage voltage transformation sub-module comprises a plurality of voltage transformation sub-modules, each of which provides an output voltage terminal for providing voltage to the power utilization unit connected thereto.
9. The roadside unit power supply system of claim 8, wherein the second-stage voltage transformation submodule comprises four voltage transformation submodules with different output voltages; the first voltage transformation sub-module is used for being connected with a power management chip PMIC of the road side unit, the second voltage transformation sub-module is connected with a 5G module of the road side unit, and the third voltage transformation sub-module and the fourth voltage transformation sub-module are respectively connected to different power utilization units of a V2X module of the road side unit.
10. The roadside unit power supply system according to any one of claims 1 to 9, wherein the storage battery is a lead-acid storage battery or a lithium battery.
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| CN202123383647.1U CN216872906U (en) | 2021-12-29 | 2021-12-29 | Power supply system of road side unit |
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| CN202123383647.1U CN216872906U (en) | 2021-12-29 | 2021-12-29 | Power supply system of road side unit |
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