CN115958980A

CN115958980A - Flowing type inflatable concentrating solar energy electricity-heat cogeneration and heat energy storage type electric vehicle charging station

Info

Publication number: CN115958980A
Application number: CN202111029028.4A
Authority: CN
Inventors: 王永华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2023-04-14

Abstract

A solar-driven mobile electric vehicle charging station comprises an inflatable light-gathering solar photovoltaic and solar photothermal and thermal cogeneration subsystem with a thermal storage system and a thermal power generation system which are excited by thermoelectric semiconductors, a storage battery subsystem for storing electric energy generated by the thermal cogeneration system, an electric drive subsystem for enabling the whole system to become a mobile electric vehicle charging system capable of being driven by self, and a control system for coordinating the work of each subsystem. The mobile electric vehicle charging station not only can generate electric energy on site for charging the electric vehicle, but also can deliver the electric energy generated by the solar power station to a parking place of the electric vehicle for charging the electric vehicle.

Description

Flowing type inflatable concentrating solar energy electricity-heat cogeneration and heat energy storage type electric vehicle charging station

Technical Field

The invention relates to a solar-driven electric vehicle charging station, in particular to a mobile electric vehicle charging station based on an inflatable concentrating solar combined heat and power generation system.

Background

Facing the challenges of global warming and fossil fuel depletion, the world is accelerating the transition of society leading to super new energy. The automotive industry is accelerating the transition to motoring as one of the three major energy consumption panels is the primary force of transporting energy consumption. The wide spread and application of electric vehicles is limited by the long charging time and the high cost of electric vehicles. Compared with an internal combustion locomotive, the energy density of fossil energy relied on by the diesel locomotive is 100-200 times of that of a storage battery, and the electric automobile based on the storage battery needs to be supplemented with energy at any time. Thus, electric vehicles require distributed charging stations, especially along highways and in remote areas, and in time to supplement energy. The distributed nature of solar resources provides the possibility of generating electricity locally to charge electric vehicles. The power generation and supply capacity of the solar energy is highly matched with the power demand of the electric automobile. However, due to the low energy current density characteristics of solar radiation, solar electric vehicle charging stations require a large amount of land to collect sufficient energy to charge electric vehicles. Obviously, the land for satisfying the charging requirement of the electric automobile is not provided in any place where the electric automobile needs to be charged. Therefore, a mobile electric vehicle charging station capable of delivering power generated by a solar power station to an electric vehicle requiring charging has become a dreaming means, and has significantly promoted the popularization and development of electric vehicles. In particular, if the mobile electric vehicle charging station is solar powered, it will be a dynamic extension of the stationary solar charging station network. In addition, the mobile electric vehicle charging station may act as a dynamic connection between the independent solar electric vehicle charging network and the fixed grid system.

The mobile electric vehicle charging station can be used as a power supply transportation vehicle to transport the fully charged battery of the fixed solar power station to the place where the electric vehicle needs to be charged to charge the battery. The mobile electric vehicle charging station can also be used as a solar power station to generate electric energy on site to charge the electric vehicle. Huang et al (Huang), U.S. patent 2015/0288317 A1, discloses a solar powered mobile electric vehicle charging station. The charging station comprises a foldable solar panel and a battery pack for storing the electric energy generated by the solar charging station, and can charge one or two electric vehicles. Huang's mobile charging station is towed or pushed to an electric vehicle requiring charging, and has no power plant of its own. The system of Huang is based on flat panel photovoltaics. Flat panel photovoltaics have limited conversion efficiency, expensive cost, and non-negligible dead weight. In Huang's system, the electric vehicle charging power is generated locally by flat panel photovoltaics. The Huang system cannot transport the electric power generated by the stationary solar power station in other areas to charge the electric vehicle, and cannot transport the electric power of the power grid to other places to charge the electric vehicle. The Huang system is limited by the low efficiency of conventional flat panel photovoltaics, and its dead weight. In the Huang system, only the storage battery is used to store the electrical energy generated by the photovoltaic system, and there is no way to store the thermal energy generated by the photovoltaic system and to enhance the generation of electrical energy by the photovoltaic panels.

U.S. patent to Prosser et al (Prosser), U.S. Pat. No.8,963,481B 2, discloses a service charging cart. Such vehicle transport battery modules provide assistance or assistance to roadside electric vehicles. The invention of proseser can transport the electric energy generated by the solar power station in other areas to the location of the electric automobile for charging. The Prosser vehicle, however, is not capable of charging an electric vehicle on-site using solar generated electricity.

Although the combination of the prior invention can create a mobile solar charging vehicle, the charging vehicle can transport electric power to other places to charge the electric vehicle, and can also generate electric power on site to charge the electric vehicle. However, the combination of the prior inventions cannot create a light-concentrating mobile solar charging vehicle, which integrates a light-concentrating solar cogeneration system with significantly improved efficiency, greatly reduced cost, and fundamentally reduced potential of self weight into a mobile system for simultaneously generating electricity and heat energy, and storing the heat energy for secondary generation of electricity. This is the object of the present invention.

In order to enable the mobile solar electric vehicle charging station to be used both for charging electric vehicles and also for charging other stationary solar power systems or the power grid, an on-board bidirectional charging system is integrated into the mobile solar electric vehicle charging station.

Disclosure of Invention

The purpose of the invention is: (1) The mobile solar electric vehicle charging station with super high efficiency, extremely low cost and super light weight is created; (2) The light-gathering solar mobile electric vehicle charging station is realized through an inflatable non-imaging light collector; (3) An autonomous driving solar system is created to be used as a transport tool for transporting power generated by a fixed solar power station for charging an electric automobile; (4) Energy heat storage and energy power output are realized through a thermopile semiconductor device, and an energy storage mode is added to the mobile solar charging station outside the storage battery; (5) Bidirectional charging of the mobile solar system is made possible.

The invention discloses an inflatable concentrating solar power and heat cogeneration mobile electric vehicle charging station, which comprises: a concentrated solar cogeneration system with an active energy-heat storage system based on a thermoelectric conversion thermopile based on an inflatable non-imaging concentrator; a battery energy storage system; a bidirectional charger; a control system; an autonomous driving system; a mobile platform.

In the system of the present invention, the various subsystems and components are configured in the following manner: the inflatable condenser is coupled with a combined heat and power generation receiver of an energy storage system integrated with thermoelectric conversion thermopile heat to form a light-gathering combined heat and power generation and energy storage unit; the light-gathering type combined heat and power generation storage units are connected to form an array; the array is arranged on a movable platform to generate electric power for a platform power system to drive the platform to move; a storage battery system is integrated in the mobile charging system for storing the electric power generated by the concentrated cogeneration system or the electric power generated by the other solar power generation system; the bidirectional charger is integrated into the system for charging the electric automobile or is charged by the solar power generation system or the power grid system; a control system is integrated into the system for coordinating the various subsystems; the autonomous driving system includes an electric motor, a power system, and an electric control system. In the operation process, the inflatable condenser converges incident direct sunlight and scattered sunlight to the receiver, the receiver directly converts one part of the incident light into electric energy through the solar cell integrated to the receiver, converts the other part of the incident light into heat energy, the part converted into the heat energy is extracted by the thermoelectric conversion thermopile, the heat energy is stored in the heat storage medium after the temperature is raised, and when the stored energy needs to be extracted, the electric energy is converted into the electric energy through the same thermoelectric conversion thermopile. The electric energy generated by the concentrated combined heat and power generation system is directly stored in the storage battery system to be used for driving a mobile charging station or charging an electric vehicle. The bidirectional charger is used for charging an electric automobile or is charged by a solar power station or a power grid. Therefore, the mobile solar electric vehicle charging station can be used for transporting the electric power generated by the fixed solar power station to the place where the electric vehicle is located to charge the electric vehicle, and can also be used for generating the electric power on the spot to charge the electric vehicle. Due to the characteristics of ultra-high efficiency, extremely low cost and super light weight of the inflatable light-gathering type electric heat cogeneration system, the whole mobile solar electric vehicle charging station realizes ultra-high efficiency, extremely low cost and super light weight. In addition to battery energy storage, the thermal energy storage system integrated with the thermoelectric conversion thermopile can also store the heat energy generated by the cogeneration system and convert the heat energy into electric energy when needed. The mobile solar electric vehicle charging station can not only transport the power generated by other solar power stations or the power of a power grid to the place where the electric vehicle is located to charge the electric vehicle, but also can generate the power on the spot to charge the electric vehicle, so that the mobile solar electric vehicle charging station has great potential to convert a parking lot into the electric vehicle charging station.

Further features and advantages of the present item will become apparent from the following description.

Drawings

Fig. 1 is a schematic diagram of a flow-type solar electric vehicle charging station based on an air-filled concentrated cogeneration system.

Fig. 2 is a schematic diagram of a power system structure integrated into a mobile solar electric vehicle charging station based on a gas-filled concentrated cogeneration system.

Fig. 3 is a co-generation system based on an inflatable concentrator non-imaging concentrator, wherein the co-generation receiver incorporates a thermal energy storage system activated by electrothermal conversion thermopile.

FIG. 4 is a cogeneration receiver with an electrothermal conversion thermopile activated thermal energy storage system.

FIG. 5 is a plan view of a cogeneration receiver with an electrothermal conversion thermopile activated thermal energy storage system.

FIG. 6 is a block diagram of a thermopile module and components of a cogeneration receiver with an electrothermal transducing thermopile activated thermal energy storage system.

FIG. 7 is a diagram of the thermal storage portion components of an electrothermal conversion thermopile activated thermal energy storage system.

FIG. 8 is a system configuration and operational schematic of a cogeneration system with an electrothermal conversion thermopile activated thermal energy storage system.

FIG. 9 is a schematic system diagram of a flow type charging station for a solar electric vehicle with combined heat and power generation by inflation and concentration.

Detailed Description

The purpose of the invention is realized by the following technical scheme:

as shown in fig. 1, the mobile solar electric vehicle charging station based on the air-filled light-focusing non-imaging condenser light-focusing cogeneration system comprises: an autonomous-drive vehicle 1000; a mobile platform 2000; a light-concentrating cogeneration unit array 3000 based on an inflatable light-concentrating non-imaging condenser; and a bi-directional charging system 4000 (which is integrated into mobile platform 2000 and thus is not shown in fig. 1).

As shown in fig. 2, the power system of the autonomous driving electric vehicle 1000 includes: a battery pack 1100, a converter 1200, an inverter 1300, an electronic control unit and battery management system 1400, and a motor 1500. The power supply system of the mobile solar electric vehicle charging station comprises: a battery pack 2100, a control system 2200, a cogeneration receiver 2300 with a thermoelectric conversion thermopile activated energy thermal storage system, and a bi-directional charger 4000.

As shown in fig. 3, during operation, incident sunlight concentrated by the inflatable concentrator non-imaging concentrators in the concentrating cogeneration unit array 3000 is coupled to the cogeneration receiver array 2300 with the energy heat storage system activated by the thermoelectric conversion thermopile.

As shown in fig. 4, the cogeneration receiver of an energy-heat storage system with thermoelectric conversion thermopile activation is an adiabatic energy generation and storage aggregate.

As shown in fig. 5, a cogeneration receiver with a thermoelectric conversion thermopile activated energy heat storage system comprises: a cogeneration photovoltaic panel 2310 comprising a transparent cover plate 2311, a solar cell array 2312, and a metal heat collection wing plate 2313; a thermoelectric conversion module 2320; a thermal storage assembly 2330 comprising an insulating layer 2331, a heat exchanger 2332, a thermal storage medium 2333, a backside insulating layer 2334, and a frame 2360 with an insulating layer. The cogeneration photovoltaic panel 2310 is laminated and encapsulated; the thermoelectric conversion module 2320 is tightly attached to the back of the metal heat collecting wing 2313; a heat exchanger 2332 in close proximity to the thermoelectric conversion module 2320 surrounded by a thermal insulation material 2331; heat exchanger 2332 is embedded in a heat storage medium that is thermally insulated by back insulation 2334 and a rim 2360. In the operation process, incident sunlight penetrates through the transparent cover layer 2311 to reach the solar cell array 2312, part of light is directly converted into electric energy, and the rest is converted into heat energy; heat energy is extracted by the thermoelectric conversion module 2320, raised in temperature and transferred to the heat exchanger 2332, during which the thermoelectric conversion module operates in heat pump mode; heat exchanger 2332 then distributes the heat into heat storage medium 2333. During the night or on rainy days, the heat stored in the heat storage medium 2333 flows through the heat exchanger 2332 and the thermoelectric conversion module 2320 to be converted into electric energy. In this process, the thermoelectric conversion module operates in a power generation mode.

As shown in fig. 6, the assembled structure of the cogeneration photovoltaic panel 2310, the tem module 2320, and the insulating material 2331 is further illustrated.

The assembled structure of heat exchanger 2332, heat storage medium 2333, and back insulation 2334 is further illustrated in fig. 7.

As shown in fig. 8, the complete cogeneration photovoltaic panel, the tem module, and the thermal storage assembly system comprise cogeneration photovoltaic panel 2310, tem module 2320, thermal storage assembly 2330, battery pack 2340, and control system 2350. During operation, incident sunlight 2301 shines on the cogeneration photovoltaic panel 2310, producing both heat and electrical energy, the electrical energy produced is stored in the battery pack 2340, the heat 2302 is warmed to heat 2303, and transferred to the thermal storage assembly 2330 for storage. During the evening and rainy days, the stored heat 2304 flows through the thermoelectric-to-thermoelectric-conversion thermopile module 2320 to convert itself into electrical energy. In the process, the thermoelectric conversion thermopile module 2320 converts its operating mode from heat pump to generator mode by the control system 2350. Waste heat 2305 from the thermoelectric conversion thermopile module 2320 is transferred back to the cogeneration photovoltaic panel 2310.

As shown in fig. 9, the energy system of the whole mobile solar electric vehicle charging station based on the air-filled light-condensing type cogeneration system comprises an autonomous-driven electric vehicle 1000, a battery pack 2200, a cogeneration receiver array 2300 with a thermoelectric conversion thermopile-activated energy heat storage system, a control system 2100, a light-condensing type cogeneration unit array 3000 based on an air-filled non-imaging condenser embedded in a mobile platform, and a bidirectional charger 4000. In operation, the inflatable concentrator array concentrates sunlight and couples concentrated sunlight 2301 to a cogeneration receiver 2300 of an energy-heat storage system with thermoelectric conversion thermopile activation, with some of the sunlight being converted directly to electricity for storage in the battery pack 2200 and the remainder converted to heat and stored in heat storage after being warmed up. When energy is needed, the heat stored in the thermal storage is extracted and converted into electrical energy by the thermopile module. The electric energy stored in the battery pack 2200 and the thermal energy stored in the thermal storage 2300 can be extracted to charge the electric vehicle through the bidirectional charger 4000. The battery pack can also be charged by other solar power plants or the power grid through a bidirectional charger.

Through the above description, the advantages of the mobile type charging station for charging the air-filled concentrated electric heat cogeneration solar electric vehicles become obvious. Super high-efficient, extremely low cost, super lightweight spotlight type electricity and heat cogeneration system is applied to mobile electric automobile charging station. The thermoelectric conversion thermopile activated energy thermal storage system is integrated into a mobile electric vehicle charging station, which not only stores energy, but also increases the conversion efficiency of the photovoltaic panel by cooling the photovoltaic panel. The bidirectional charger is integrated into a mobile electric vehicle charging station, so that the charging station not only can generate electricity on site to charge an electric vehicle, but also can transport electricity generated by other solar power stations or power grid electricity to charge the electric vehicle. The invention relates to a dynamic extension of a solar power station network as a mobile system, and also relates to a dynamic connection between the solar power station network and a conventional power grid.

Claims

1. A mobile solar electric vehicle charging station based on an inflatable concentrated electric heat cogeneration system comprises: a) An inflatable concentrator array; b) An electric drive system; c) A mobile platform containing a battery pack and a solar cogeneration receiver array with a thermal storage system activated by a thermoelectric-to-thermoelectric stack; d) A bidirectional charger; e) A control system;

wherein the inflatable concentrator array in the mobile platform is optically coupled to a solar co-generation receiver array with a thermoelectric-to-thermoelectric-stack activated thermal storage system; a solar co-generation receiver array with a thermal storage system activated by a thermoelectric conversion stack is connected to the battery pack through a cable; the bidirectional charger is connected to the battery pack through a cable; the control system is connected to the battery pack through a cable, a solar energy cogeneration receiver array with a heat storage system activated by a thermoelectric conversion pile, a bidirectional charger and an electric drive system; the electric drive system is connected with the mobile platform; the system comprises an inflatable light-gathering non-imaging condenser array, a battery pack, a solar energy and heat cogeneration receiver array with a heat storage system activated by a thermoelectric conversion pile, a bidirectional charger and a control system, wherein the bidirectional charger and the control system are arranged on a movable platform;

in the operation process, a light-concentrating type electricity-heat cogeneration system based on an inflatable light-concentrating non-imaging condenser, which is provided with a heat storage system activated by a thermoelectric conversion pile, simultaneously generates electric energy and heat energy; the electric energy generated by the electric heat cogeneration is used for charging the battery pack; the heat energy generated by the electric heat cogeneration is stored in a heat storage system and used for converting electric energy to charge the battery pack at night and in rainy days; the battery pack charges the electric automobile through the bidirectional charger; the battery pack can also be charged by other solar power stations or the power grid, and then transported to the electric vehicle location by the mobile charging station to charge the electric vehicle.

2. The electric drive system of claim 1 comprising a battery pack, a converter, an inverter, a motor, an electronic control unit and battery management system.

3. The concentrated thermoelectric receiver based on an air-filled concentrator non-imaging concentrator with a thermal storage system for thermoelectric-to-thermoelectric stack activation as recited in claim 1 comprising a cogeneration photovoltaic panel comprising a transparent cover layer, a solar array, and a metal sheet layer; some thermoelectric conversion thermopile modules; a thermal storage assembly includes a top insulating layer, a heat exchanger, a back insulating layer, and a frame including an insulating layer.

4. The cogeneration photovoltaic panel of claim 3, wherein the individual components are encapsulated together by lamination.

5. The thermoelectric conversion thermopile module of claim 3 disposed immediately behind a metal plate of a cogeneration photovoltaic panel.

6. The heat exchanger as set forth in claim 3 is closely attached to the rear of the thermoelectric conversion thermopile module wound with a heat insulating material.

7. The heat exchanger of claim 3 embedded in a thermal storage medium insulated by a top insulating layer, a back insulating layer, and side frames.