CN219659430U - Intelligent hybrid power supply system - Google Patents
Intelligent hybrid power supply system Download PDFInfo
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- CN219659430U CN219659430U CN202321021786.6U CN202321021786U CN219659430U CN 219659430 U CN219659430 U CN 219659430U CN 202321021786 U CN202321021786 U CN 202321021786U CN 219659430 U CN219659430 U CN 219659430U
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Abstract
The utility model discloses an intelligent hybrid power supply system, which comprises: the device comprises mains supply, a power supply loop, a voltage stabilizer, a variable speed constant frequency unit, a control module, a transformer, a storage battery pack and a charging pile; the control module is connected with the power supply loop, the storage battery pack and the charging pile; the output end of the power supply loop is connected to the input end of the transformer through the variable speed constant frequency unit; the second output end of the power supply loop is connected to the voltage stabilizer; the output end III of the power supply loop is connected to the input end of the transformer; the storage battery pack is connected with the voltage stabilizer and the variable speed constant frequency unit; the transformer and the mains supply power for the charging pile, the power supply system is used for switching and adjusting the working states of the power supply loop and the storage battery pack according to the sunlight, wind power and load changes, multiple power supply modes are realized for hybrid power supply of the charging pile, and the stability of the power supply system is improved while the power consumption of the mains supply is reduced.
Description
Technical Field
The embodiment of the utility model relates to the technical field of electric automobile charging, in particular to an intelligent hybrid power supply system.
Background
At present, in the process of construction and development of new energy fields in China, the development of new energy electric vehicles occupies a large space. The development of a charging pile serving as a charger of a new energy automobile is more popular in the new competition of the energy field.
The charging pile is usually installed at public construction sites, parking lots or roads of communities of residential areas and can be divided into an alternating current charging pile and a direct current charging pile according to the mode of outputting current by the charging pile, most types of charging piles installed in the communities at present are alternating current charging piles, electric energy is provided by mains supply, and in order to respond to the call of the state about energy conservation and emission reduction, the structural adjustment of the electric power industry is promoted, the environmental pollution is reduced, so that a new power supply scheme with large-scale development and commercialization application prospects is needed.
Disclosure of Invention
In view of the above, the utility model provides an intelligent hybrid power supply system, which solves the problem that the prior art has no stable hybrid power supply system for the charging pile of the community electric automobile.
In order to achieve the above purpose, the utility model provides a hybrid power supply system, which comprises a mains supply, a power supply loop, a voltage stabilizer, a variable speed constant frequency unit, a control module, a transformer, a storage battery pack and a charging pile; the control module is electrically connected with the power supply loop, the storage battery pack and the charging pile, and the output end of the power supply loop is connected to the input end of the transformer through the variable speed constant frequency unit; the second output end of the power supply loop is connected to the voltage stabilizer; the output end III of the power supply loop is connected to the input end of the transformer; the storage battery pack is connected with the voltage stabilizer and the variable speed constant frequency unit; and the transformer and the commercial power supply power the charging pile.
Preferably, the power supply loop comprises a wind generating set, a solar photovoltaic battery pack and a diesel generating set.
Preferably, the variable speed constant frequency unit comprises a rectifier and an inverter, the rotating speed of the generator of the wind generating set changes along with the wind speed in the generating process, so that the fan can maintain the constant frequency of the electric energy output by the generator while in variable speed operation, therefore, a variable speed constant frequency technology is required, and an alternating current-direct current-alternating current conversion system (AC-DC-AC) is selected as the variable speed constant frequency unit for realizing variable speed constant frequency operation.
Preferably, the rectifier is an AC/DC converter, and an input end of the AC/DC converter is connected to an output end of the wind generating set, and is used for converting AC generated by the wind generating set into stable DC after rectifying; the inverter is a DC/AC converter, and the input end of the DC/AC converter is connected with the AC/DC converter and the output end of the storage battery, and is used for converting direct current output by the storage battery and direct current converted by the AC/DC converter into alternating current so as to ensure the normal use of alternating current load equipment.
Preferably, the voltage stabilizer is a DC/DC converter, and an input end of the DC/DC converter is connected to an output end of the solar photovoltaic battery pack, and an output end of the DC/DC converter is connected to an input end of the storage battery pack, so that the low-voltage direct current output by the solar panel is converted into high-voltage direct current through the boost chopper circuit to charge the storage battery pack.
Preferably, the input end of the transformer is connected with the inverter and the output end of the diesel generator set, the output end of the transformer is connected with the charging pile, the transformer is used for converting alternating voltages with different values into standard voltages with the same frequency for the charging pile, and the charging pile is also connected with the mains supply.
Preferably, the storage battery pack is composed of a plurality of storage batteries, and the input end of the storage battery pack is connected with the output ends of the rectifier and the voltage stabilizer, and is used for converting electric energy generated by the wind generating set and the solar photovoltaic battery pack into chemical energy to be stored for use when power supply is insufficient.
Further preferably, the control module is connected with the power supply loop and the storage battery pack; the control module is used for switching and adjusting the working states of the power supply loop and the storage battery pack according to the changes of sunlight intensity, wind power and load, and the specific mode is as follows:
daytime load demand is low: when only a small amount of charging vehicles are needed, the solar photovoltaic battery pack and the wind generating set can directly supply electric energy to the charging pile under the condition that the commercial power is not used, and redundant electric energy is stored in the storage battery pack;
the load demand is moderate in daytime: when a proper amount of charging vehicles exist, the solar photovoltaic battery pack and the wind power generator set cannot stably meet the requirements, and at the moment, the storage battery pack, the solar photovoltaic battery pack and the wind power generator set are started to be combined for supplying power;
the load demand is large in daytime: the solar photovoltaic battery pack and the wind generating set cannot meet the requirements, and cannot completely rely on the combination of the storage battery pack, the solar photovoltaic battery pack and the wind generating set to provide electric energy, and the commercial power is needed to be added for supplying power at the moment;
night charging vehicle: the solar photovoltaic battery pack cannot work, the commercial power is used as a main power supply, the control module controls the wind generating set to charge the storage battery pack, and the storage battery pack is used as an auxiliary power supply to jointly supply power;
the diesel generating set is for standby: when the commercial power is powered down, the diesel generator set is used as a standby power supply of the commercial power.
Preferably, the load demand is low: the load demand is less than or equal to 1/15 of the total load demand; the load demand is moderate: greater than 1/15 of the total load demand and less than or equal to 1/5 of the total load demand; the load demand is large: greater than 1/5 of the total load demand.
The utility model has the beneficial effects that:
according to the power supply system, the control module is used for controlling the power supply loop and the storage battery to switch and control, the solar photovoltaic cell module is used for storing energy in daytime and summer with strong solar radiation, the charging pile is powered after the energy storage is completed, the wind generating set is used for storing energy in night and winter with abundant wind power resources, the charging pile is powered after the energy storage is completed, when the power is off, wind and light resources are insufficient, the diesel generator is switched in, and meanwhile, the electric energy stored by the storage battery is used for supplying power for the system, so that the power consumption of the commercial power of the charging pile can be reduced, the operation cost is saved, meanwhile, the situation that a user cannot charge an automobile when the power supply system is abnormal is avoided, and the stability of the power supply system is improved.
Drawings
Fig. 1 is a schematic block diagram of a power supply system according to an embodiment of the present utility model.
In the figure: the device comprises a 1-power supply loop, a 2-voltage stabilizer, a 3-variable speed constant frequency unit, a 4-control module, a 5-transformer, a 6-storage battery pack, a 7-charging pile, 8-mains supply, a 101-wind generating set, a 102-solar photovoltaic battery pack, a 103-diesel generating set, a 301-rectifier and a 302-inverter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the utility model provides a power supply system, which comprises a mains supply 8, a power supply loop 1, a voltage stabilizer 2, a variable speed constant frequency unit 3, a control module 4, a transformer 5, a storage battery 6 and a charging pile 7.
The control module 4 is connected with the power supply loop 1, the storage battery 6 and the charging pile 7; the control module 4 continuously switches and adjusts the working states of the power supply loop 1 and the storage battery pack 6 according to the changes of sunlight intensity, wind power and load, so that the overcharge and overdischarge of the storage battery can be prevented, and the service life of the storage battery can be prolonged; providing optimal system energy management.
The power supply loop 1 comprises a wind power generator set 101, a solar photovoltaic battery set 102 and a diesel generator set 103, wherein the wind power generator set 101 converts wind energy into mechanical energy by utilizing a wind wheel, converts the mechanical energy into electric energy and outputs alternating current; the solar photovoltaic cell set 102 is formed by connecting a plurality of solar cell panels in series and parallel, and the solar cell panels convert light energy into electric energy by utilizing a photovoltaic effect and output direct current; the diesel generator set 103 converts chemical energy into thermal energy, then converts the thermal energy into mechanical energy, finally converts the mechanical energy into required electric energy and outputs alternating current.
The variable speed constant frequency unit 3 includes a rectifier 301 and an inverter 302, where the rotational speed of the generator varies with the wind speed during the power generation of the wind generating set 101, so that in order to enable the fan to maintain the frequency of the output electric energy of the generator constant while operating at a variable speed, a variable speed constant frequency technology is required, and in order to implement the variable speed constant frequency operation, an alternating current-direct current-alternating current conversion system (AC-DC-AC) is used as the variable speed constant frequency unit.
The rectifier 301 is an AC/DC converter, and an input end of the AC/DC converter is connected to an output end of the wind turbine generator system 101, so as to rectify the AC generated by the wind turbine generator system 101 and then convert the rectified AC into DC.
The inverter 302 is a DC/AC converter, and an input end of the DC/AC converter is connected to the AC/DC converter and an output end of the battery pack 6, so as to convert the DC power output by the battery pack and the DC power converted by the AC/DC converter into AC power, thereby ensuring normal use of the AC power load device.
The voltage stabilizer 2 is a DC/DC converter, an input end of the DC/DC converter is connected to an output end of the solar photovoltaic cell set 102, and an output end of the DC/DC converter is connected to an input end of the storage battery set 6, and is used for converting low-voltage direct current output by the solar cell panel into high-voltage direct current through the boost chopper circuit to charge the storage battery.
The input end of the transformer 5 is connected with the output ends of the inverter 302 and the diesel generator set 103, the output end of the transformer 6 is connected with the charging pile 7, the transformer is used for converting alternating voltages with different values into standard voltages with the same frequency for the charging pile 7, and the charging pile 7 is also connected with the mains supply 8.
The storage battery pack 6 is composed of a plurality of storage batteries, and the input end of the storage battery pack 6 is connected with the output ends of the rectifier 301 and the voltage stabilizer 2, and is used for converting electric energy generated by the wind generating set 101 and the solar photovoltaic battery pack 102 into chemical energy to be stored for use when power supply is insufficient.
The working mode of the embodiment of the utility model is as follows:
the power supply system is characterized in that the control module 4 adjusts the working states of the power supply loop 1 and the storage battery 6 according to the quantity of loads connected to the system and the conditions of sunlight and wind; the electric energy generated by the wind generating set 101 can be directly supplied to the charging pile 7 after passing through the variable speed constant frequency unit 3, and can be stored in the storage battery 6, the direct current generated by the solar photovoltaic battery 102 is stored in the storage battery 6 after being stabilized, and then is converted into alternating current by the inverter 302 for being used by the charging pile 7, and the alternating current generated by the diesel generating set 103 can be directly used by the charging pile 7 after being converted by the transformer 5.
"direct" here means that the process of transferring to the battery pack is not performed.
When no vehicle is charged, the control module 4 sends a command to charge the storage battery 6 preferentially for use in a charging peak period.
Daytime load demand is low: specifically, the load demand is less than or equal to 1/15 of the total load demand, and when only a small amount of charging vehicles are used, the solar photovoltaic cell set 102 and the wind power generator set 101 can meet the demand, the charging pile 7 can be directly powered without using the utility power 8, and redundant electric energy is stored in the storage battery 6; in the daytime with better sunlight radiation and wind power, the control module 4 can control any one of the solar photovoltaic battery pack 102 and the wind power generator set 101 to supply power to the charging pile 7, and the other generator set can store the generated electric energy into the storage battery pack 6; in the daytime without wind and light or with wind and no light, the control module 4 controls the corresponding generator set to supply power to the charging pile 7 according to wind power and light conditions, and the redundant electric energy is stored in the storage battery 6.
The load demand is moderate in daytime: specifically, when the load demand is greater than 1/15 of the total load demand and less than or equal to 1/5 of the total load demand, there is a proper amount of charging vehicles, the solar photovoltaic cell set 102 and the wind turbine generator set 101 cannot stably meet the demand, and at this time, the combination of the storage battery set 6, the solar photovoltaic cell set 102 and the wind turbine generator set 101 is started to supplement power supply; when the charging demand is increased and the power supplied by the wind generating set 101 and the solar photovoltaic battery set 102 cannot stably meet the demand, the storage battery set 6 is controlled to release the electric energy accumulated before to supplement the shortages of wind power generation and solar power generation.
The load demand is large in daytime: specifically, when the load is greater than 1/5 of the total load demand, a large number of charging vehicles exist, the solar photovoltaic cell set 102 and the wind generating set 101 cannot meet the demand, and the combination of the storage battery set 6, the solar photovoltaic cell set 102 and the wind generating set 101 cannot be completely relied on to provide electric energy, and at the moment, the commercial power 8 needs to be added for supplying power; that is, when the charging demand peak arrives, the wind generating set 101, the solar photovoltaic battery pack 102 and the storage battery pack 6 are controlled to supply power simultaneously, and the utility power 8 is matched with the required power which is insufficient to supply power to the charging pile 7.
Night charging vehicle: the solar photovoltaic battery pack 102 cannot work, the commercial power 8 is used as a main power supply, the control module controls the wind power generator set 101 to charge a storage battery pack, and the storage battery pack 6 is used as an auxiliary power supply to jointly supply power.
The diesel generating set is for standby: when the commercial power 8 is powered down, the diesel generator set 103 is used as a standby power supply of the commercial power.
Claims (9)
1. An intelligent hybrid power supply system, comprising: the device comprises mains supply, a power supply loop, a voltage stabilizer, a variable speed constant frequency unit, a control module, a transformer, a storage battery pack and a charging pile; the control module is electrically connected with the power supply loop, the storage battery pack and the charging pile, and the output end of the power supply loop is connected to the input end of the transformer through the variable speed constant frequency unit; the second output end of the power supply loop is connected to the voltage stabilizer; the output end III of the power supply loop is connected to the input end of the transformer; the storage battery pack is connected with the voltage stabilizer and the variable speed constant frequency unit; and the transformer and the commercial power supply power the charging pile.
2. The intelligent hybrid power system of claim 1, wherein the power supply loop comprises a wind power generator set, a solar photovoltaic cell set, and a diesel generator set.
3. The intelligent hybrid power supply system according to claim 2, wherein the variable speed constant frequency unit comprises a rectifier and an inverter, and the variable speed constant frequency unit is an ac-dc-ac conversion system.
4. The intelligent hybrid power supply system according to claim 3, wherein the rectifier is an AC/DC converter, and the input end of the AC/DC converter is connected to the output end of the wind turbine generator set, and is configured to rectify the AC generated by the wind turbine generator set into a stable DC; the inverter is a DC/AC converter, and the input end of the DC/AC converter is connected with the AC/DC converter and the output end of the storage battery, and is used for converting direct current output by the storage battery and direct current converted by the AC/DC converter into alternating current.
5. The intelligent hybrid power supply system according to claim 2, wherein the voltage stabilizer is a DC/DC converter, an input end of the DC/DC converter is connected to an output end of the solar photovoltaic cell unit, and an output end of the DC/DC converter is connected to an input end of the storage battery, and the DC/DC converter is used for converting low-voltage direct current output by the solar cell panel into high-voltage direct current through the boost chopper circuit to charge the storage battery.
6. The intelligent hybrid power supply system according to claim 3, wherein an input end of the transformer is connected with the inverter and an output end of the diesel generator set, an output end of the transformer is connected with the charging pile, and the charging pile is also connected with the commercial power.
7. The intelligent hybrid power supply system according to claim 3, wherein the battery pack is composed of a plurality of batteries, and an input end of the battery pack is connected with an output end of the rectifier and the voltage stabilizer.
8. The intelligent hybrid power system of claim 7, wherein the control module is connected to the power circuit and the battery pack; the control module is used for switching and adjusting the working states of the power supply loop and the storage battery pack according to the changes of sunlight intensity, wind power and load, and the specific mode is as follows:
daytime load demand is low: when the solar photovoltaic battery pack and the wind power generator set can meet the requirements, the solar photovoltaic battery pack and the wind power generator set directly provide electric energy for the charging pile and store redundant electric energy in the storage battery pack;
the load demand is moderate in daytime: when the solar photovoltaic battery pack and the wind generating set cannot stably meet the requirements, the storage battery pack, the solar photovoltaic battery pack and the wind generating set are combined to supplement power supply;
when the load demand is large in daytime: the storage battery pack, the solar photovoltaic battery pack, the wind generating set and the mains supply are combined to supply power;
night charging vehicle: the utility power is used as a main power supply, the control module controls the wind generating set to charge a storage battery pack, and the storage battery pack is used as an auxiliary power supply to jointly supply power;
the diesel generating set is for standby: when the commercial power is powered down, the diesel generator set is used as a standby power supply of the commercial power.
9. The intelligent hybrid power supply system of claim 8, wherein:
the load demand is low: the load demand is less than or equal to 1/15 of the total load demand;
the load demand is moderate: greater than 1/15 of the total load demand and less than or equal to 1/5 of the total load demand;
the load demand is large: greater than 1/5 of the total load demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321021786.6U CN219659430U (en) | 2023-05-04 | 2023-05-04 | Intelligent hybrid power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321021786.6U CN219659430U (en) | 2023-05-04 | 2023-05-04 | Intelligent hybrid power supply system |
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| Publication Number | Publication Date |
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| CN219659430U true CN219659430U (en) | 2023-09-08 |
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| CN202321021786.6U Active CN219659430U (en) | 2023-05-04 | 2023-05-04 | Intelligent hybrid power supply system |
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2023
- 2023-05-04 CN CN202321021786.6U patent/CN219659430U/en active Active
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