Energy supply system of new energy automobile

Abstract

The invention relates to an energy supply system of a new energy automobile. The energy supply system comprises a renewable energy power generation device, a water electrolysis device, a hydrogen storage device, an oxygen storage device, a hydrogen power generation device, a hydrogen supply device and a power supply device. According to the invention, renewable energy sources can be utilized to provide energy for pure electric vehicles and hydrogen fuel cell vehicles in a stable, efficient and independent manner.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an energy supply system for new energy vehicles. Background Art

[0002] The depletion of fossil fuels and the emission of carbon dioxide into the atmosphere lead to global warming. To address this problem, various industrial sectors are taking measures, and the impact on transportation is particularly significant. As a substitute for traditional internal combustion engine vehicles powered by fossil energy, the market for electric vehicles driven by batteries and fuel cell vehicles driven by hydrogen fuel cells is gradually expanding.

[0003] Moreover, the domestic electric vehicle power supply facilities have taken shape, but the hydrogen supply facilities for fuel cell vehicles are relatively few. When developing and introducing equipment, they are carried out separately. Considering the overlap in the development time of fuel cell vehicles and electric vehicles, it is best to introduce equipment that can provide facilities that provide electricity and hydrogen to both parties efficiently and without waste.

[0004] On the other hand, since the output of renewable energy is not stable, the energy supply to vehicles is not expected to be continuous and uninterrupted, so when actually using renewable energy, it is necessary to consider the inconsistency between supply and demand of energy reception and output. If the renewable energy region cannot absorb the supply and demand gap, it is very important to reduce the load on the power system, which requires energy storage facilities that can efficiently and large-capacity convert and store energy. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides an energy supply system for a new energy vehicle.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an energy supply system for new energy vehicles, comprising: Renewable energy power generation device, used to generate electricity using renewable energy; a water electrolysis device for producing hydrogen and oxygen using electricity generated by a renewable energy power generation device and / or electricity supplied from an external power system; A hydrogen storage device for storing hydrogen generated by a water electrolysis device; An oxygen storage device for storing oxygen generated by the water electrolysis device; and transporting hydrogen to a hydrogen storage device and oxygen to an oxygen storage device; A hydrogen power generation device for generating electricity using hydrogen from a hydrogen storage device; A hydrogen supply device, used for using the hydrogen of the hydrogen storage device and supplying it to the first load unit; The power supply device is used to use the power generated by the renewable energy power generation device and / or the power generated by the hydrogen power generation device and / or the power generated by the hydrogen power generation device and supply it to the second load unit.

[0007] As a preferred solution, the hydrogen supply device is a hydrogen refueling machine, and the power supply device is a charger or a charging station.

[0008] As a preferred solution, the first load unit is a hydrogen fuel cell vehicle, and the second load unit is an electric vehicle.

[0009] As a preferred solution, it also includes: a heat storage and heat exchange device for storing heat generated by the renewable energy power generation device and / or the hydrogen power generation device during the power generation process, and supplying the heat to the water electrolysis device; The power storage device is used to store the electricity generated by the renewable energy power generation device and supply the electricity to the power supply device.

[0010] As a preferred solution, the heat storage and heat exchange device includes a heat storage tank and a heat exchanger, and the power storage device includes an energy storage cabinet.

[0011] As a preferred solution, the renewable energy power generation device includes a wind power generation device and / or a photovoltaic power generation device.

[0012] As a preferred solution, the hydrogen storage device includes a hydrogen storage tank, and the oxygen storage device includes an oxygen storage tank.

[0013] As a preferred solution, the water electrolysis device is an electrolyzer and / or a reversible fuel cell.

[0014] As a preferred solution, the hydrogen power generation device is a fuel cell and / or a reversible electrolyzer.

[0015] The beneficial effects of the present application are as follows: the present application forms an electricity and hydrogen combined supply support system by setting up a renewable energy power generation device, a water electrolysis device, a hydrogen storage device, an oxygen storage device, a hydrogen power generation device, a hydrogen supply device and an electricity supply device. The system can utilize renewable energy to provide energy for electric vehicles and hydrogen-powered vehicles in a stable, efficient, and independent manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of Example 2 of the present invention.

[0017] Markings in the figure: 1. Renewable energy power generation device, 2. Water electrolysis device, 3. Hydrogen storage device, 4. Oxygen storage device, 5. Hydrogen power generation device, 6. Hydrogen supply device, 7. Power supply device, 8. Heat storage and heat exchange device, 81. Heat storage tank, 82. Heat exchanger, 9. Power storage device, 10. Water recovery device, 11. Water supply device, 12. Hydrogen supply device, 13. External power system connection device, 14. Energy management device. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] See also Figure 1 An embodiment of the present invention provides an energy supply system for a new energy vehicle, including a renewable energy power generation device 1, a water electrolysis device 2, a hydrogen storage device 3, an oxygen storage device 4, a hydrogen power generation device 5, a hydrogen supply device 6 and a power supply device 7. The renewable energy power generation device 1 is used to generate electricity using renewable energy; the water electrolysis device 2 is used to use the electricity generated by the renewable energy power generation device 1 and / or the electricity supplied from the external power system to prepare hydrogen and oxygen, the hydrogen storage device 3 is used to store the hydrogen generated by the water electrolysis device 2, the oxygen storage device 4 is used to store the oxygen generated by the water electrolysis device 2, the hydrogen power generation device 5 is used to use the hydrogen of the hydrogen storage device 3 to generate electricity, the hydrogen supply device 6 is used to use the hydrogen of the hydrogen storage device 3 and supply it to a first load unit, and the power supply device 7 is used to use the electricity generated by the renewable energy power generation device 1 and / or the electricity generated by the hydrogen power generation device 5 and / or the electricity generated by the hydrogen power generation device 5 and supply it to a second load unit.

[0020] The water electrolysis device 2 is connected to the hydrogen storage device 3 and the oxygen storage device 4 respectively, the hydrogen storage device 3 is connected to the hydrogen supply device 6, the hydrogen power generation device 5 is connected to the hydrogen storage device 3 and the oxygen storage device 4 respectively, the hydrogen supply device 6 is a hydrogen filling machine, the power supply device 7 is a charger or a charging station, the first load unit is a hydrogen fuel cell vehicle, and the first load unit can also be a hydrogen-powered vehicle. The second load unit is an electric vehicle.

[0021] Specifically, it also includes a heat storage and heat exchange device 8, an electricity storage device 9, a water recovery device 10, a water supply device 11 and a hydrogen supply device 12. The heat storage and heat exchange device 8 is used to store the heat generated by the renewable energy power generation device 1 and / or the hydrogen power generation device 5 during the power generation process, and supply the heat to the water electrolysis device 2; the electricity storage device 9 is used to store the electricity generated by the renewable energy power generation device 1, and supply the electricity to the power supply device 7.

[0022] The electric energy generated by the renewable energy power generation device 1 can be used not only for water electrolysis in the water electrolysis device 2 to produce hydrogen and oxygen, but also for supplementing the electricity consumed by the power supply device 7 and storing electricity in the power storage device 9.

[0023] The hydrogen supply device 12 can obtain hydrogen from the outside, for example, through biomass reforming, tank trucks or pipelines, and store it in the hydrogen storage device 3. In other words, the hydrogen supply device 12 can replenish hydrogen or hydrogen-containing medium from the outside.

[0024] The water supply device 11 is connected to the water recovery device 10 and the water electrolysis device 2. The water recovery device 10 is connected to the hydrogen power generation device 5. The water recovery device 10 is used to collect water generated by the hydrogen power generation device 5 during power generation, and transport the collected water to the water supply device 11. The water supply device 11 is used to supply water to the water electrolysis device 2. The water supply device 11 includes a water tank, and the water in the water tank can be replenished from the outside. The water in the water tank is pure water. The water tank is connected to the water electrolysis device 2 through a first pipeline, and a first water pump is provided on the first pipeline. The water recovery device 10 includes a recovery tank, and the recovery tank is connected to the water supply device 11 through a second pipeline, and a second water pump is provided on the second pipeline.

[0025] The heat storage and heat exchange device 8 includes a heat storage tank 81 and a heat exchanger 82. The heat storage tank 81 is used to store the heat generated by the renewable energy power generation device 1 and the hydrogen power generation device 5 during the power generation process. The heat exchanger 82 is used to supply the heat stored in the heat storage tank 81 to the water electrolysis device 2 and the hydrogen storage device 3. The heat exchanger 82 is a plate heat exchanger or a shell and tube heat exchanger. It should be noted that the parts not described in detail in this application are all prior art.

[0026] The power storage device 9 includes an energy storage cabinet, the renewable energy power generation device 1 includes a wind power generation device and / or a photovoltaic power generation device, the hydrogen storage device 3 includes a hydrogen storage tank, and the oxygen storage device 4 is an oxygen storage tank.

[0027] The water electrolysis device 2 is electrically connected to the renewable energy power generation device 1, the power storage device 9, the power supply device 7 and the external power system, respectively. The present application is also provided with an external power system connection device 13, which includes a PLC controller, and the PLC controller is electrically connected to the renewable energy power generation device 1, the power storage device 9, the power supply device 7 and the hydrogen power generation device 5, respectively. When disconnected from the external power system, the external power system connection device 13 will switch the line to control the hydrogen power generation device 5 or the power storage device 9 to supply power to the power supply device 7. Therefore, even if disconnected from the external power system, the operation of the equipment can be provided by the power of the system itself.

[0028] The water electrolysis device 2 is an electrolyzer and / or a reversible fuel cell. The electrolyzer can be selected from at least one of an alkaline electrolyzer, a proton exchange membrane electrolyzer, a solid oxide electrolyzer and a reversible electrolyzer. Both the electrolyzer and the reversible fuel cell can be commercially available.

[0029] The hydrogen power generation device 5 is a fuel cell and / or a reversible electrolyzer. The fuel cell is selected from at least one of a proton exchange membrane fuel cell, a solid oxide fuel cell and a reversible fuel cell. Both the fuel cell and the reversible electrolyzer can be commercially available.

[0030] The oxygen storage device 4 can store the oxygen generated in the water electrolysis device 2. The oxygen stored in the oxygen storage device 4 can be used for external purposes such as medicine or aquaculture, and can also be used together with hydrogen to generate electricity again in the hydrogen power generation device 5.

[0031] The present application also includes an energy management device 14, which monitors each monitored unit, as well as the supply and demand balance of electricity, hydrogen and heat, and controls the operation of each unit according to changes in the supply and demand balance. In other words, the energy management device 14 monitors the supply and demand of electricity, hydrogen and heat energy of each unit storage unit, hydrogen unit and thermal energy unit, and controls the operation of each unit according to changes in the supply and demand balance. Based on the monitored supply and demand, it predicts possible storage or production shortages in the future and controls the operation of each unit to make up for the shortage.

[0032] For example, taking electricity as an example, the energy management device 14 monitors the power demand received by the power supply device 7 and the power supply of the renewable energy power generation device 1. If the difference between the supply and demand balance exceeds a preset threshold, the system will control the operation of each device to make up for the power shortage.

[0033] The energy control device 14 of the present application can adopt an existing intelligent system integrating software and hardware to monitor, control and optimize the energy flow and energy consumption in the energy system. It is based on data acquisition, analysis and decision support technology, and can monitor the operating status, energy consumption and environmental conditions of energy equipment in real time, so as to achieve efficient management and optimization of energy, such as using VCU (Vehicle control unit) to control the energy storage system or device to realize various control strategies.

[0034] When the difference between the power demand of the power supply device 7 and the power supply of the renewable energy power generation device 1 exceeds the threshold, that is, the power demand greatly exceeds the power supply, the energy management device 14 controls to increase the power generation of the hydrogen power generation device 5, and at the same time increases the amount of hydrogen in the previous hydrogen storage device 3. In this way, the power generated by the hydrogen power generation device 5 is used to compensate for the shortage of electricity.

[0035] The water recovery device 10 collects water generated during hydrogen power generation and returns it to the water supply device 11. The energy management device 14 can also ensure that when the water supply is insufficient during operation, it controls the water supply device 14 to supply pure water from the outside for replenishment when necessary.

[0036] In this embodiment, the energy management device 14 continuously monitors the supply and demand of electricity and hydrogen, and operates and controls each unit to maintain a balance between supply and demand.

[0037] For example, the electric energy obtained from the renewable energy power generation device 1, except for the electric energy required for charging the electric vehicle and maintaining the system itself, is converted into hydrogen by the water electrolysis device 2 and stored in the hydrogen storage device 3. If more electricity is required than available, the hydrogen power generation device 5 can be used to generate electricity to supplement the shortage of electricity supply.

[0038] When hydrogen is refueled in the fuel cell vehicle, the necessary hydrogen is supplied from the hydrogen storage device 3 via the hydrogen supply device 6 .

[0039] Furthermore, if the renewable energy power generation device 1 generates surplus electric energy, the surplus electric energy can be used to increase the energy capacity of the hydrogen supply device 6 and the power supply device 7, for example, to increase the hydrogen filling pressure. If the hydrogen storage capacity in the hydrogen storage device 3 is sufficient, the surplus hydrogen input by the renewable energy power generation device 1 can be transported to the external power grid for sale. In this way, the renewable energy power with large fluctuations can be effectively utilized.

[0040] During the actual operation of the system, the amount of electricity received by the system, the amount of electricity provided by the system, and the amount of hydrogen stored over a period of time can be quantitatively predicted to a certain extent based on historical data and forecasts of future weather and climate conditions and vehicle usage.

[0041] In this system, the energy management device 14 provides some quantitatively predicted electricity and hydrogen to determine the amount of electricity delivered based on the time variation of the storage amount, the operation conditions of the units in the system, and the power of the external power system.

[0042] Then the energy management device 14 determines the operating status of each unit in the system, the difference between the amount of electricity transmitted from the external power system and the actual change in the operating status, and compares it with the preset supply and demand balance threshold to control and operate each unit to increase or decrease hydrogen or electricity to meet future supply and demand requirements. By controlling and operating each unit to increase or decrease hydrogen or electricity to meet future supply and demand requirements, the entire system can operate efficiently.

[0043] In order to minimize operating costs, the amount of electricity obtained from the external power grid and the maximum amount of electricity transmitted by the system to the external power system should be minimized.

[0044] In principle, the system can operate independently without power from an external power system, but if an accident, disaster or other failure occurs, it is necessary to disconnect from the external power system without power from the renewable energy power generation device 1, and an external power system connection device 13 is provided to switch the operating power of the device from the power generated by the hydrogen stored in the device and the power provided by the power storage device 14. The external power system connection device 13 is used to switch the electric energy required for the operation of the device to the electric energy generated by the stored hydrogen and the electric energy provided by the power storage device 14. In this way, the system can operate independently in an emergency.

[0045] Furthermore, the hydrogen supply device 12 is used to supply hydrogen obtained from biomass conversion and other sources from the outside. The supply of hydrogen and electricity can continue even if the connection with the grid is disconnected, without receiving electricity from the renewable energy power generation device 1 and without using an external power source.

[0046] In this embodiment, in order to improve the energy efficiency of the system, the heat generated by the renewable energy power generation device 1 and the hydrogen power generation device 5 during the power generation process is recovered by the heat storage and heat exchange device 8, and then used for the electrolysis reaction of water in the water electrolysis device 2 of the endothermic reaction and the supply of hydrogen from the hydrogen storage device 3.

[0047] The hydrogen supply system 10 is connected to the external power system via the external power system connection device 13. If the power obtained from the renewable energy power generation device 1 exceeds the demand of the hydrogen supply system 10 (the electric vehicle exceeds the energy supply + hydrogen storage of the hydrogen fuel cell vehicle), the power stored in the power storage device 14 is provided to the external power system.

[0048] On the contrary, if the demand for power supplied by the power supply device 7 to the electric vehicle exceeds the amount of power that can be provided by the renewable energy power generation device 1 and the hydrogen power generation device 5 , the necessary power can be introduced from the external power system via the external power system connection device 13 .

[0049] Furthermore, if the hydrogen storage is insufficient, hydrogen or hydrogen storage medium can be replenished from outside the system, and the energy management device 14 will introduce hydrogen or hydrogen-containing medium into the hydrogen storage device 3 through the hydrogen replenishing device 12.

[0050] In other words, the energy management device 14 monitors the power generation and heat storage of each unit, the hydrogen storage amount, the current value of each line, the hydrogen flow rate and the water flow rate, etc., and adjusts each input and output (operation control) to ensure the optimal operation of internal and external power.

[0051] The energy management device 14 schedules the operation on a daily or weekly basis based on the prediction of the energy supply amount and frequency of electric vehicles and fuel cell vehicles, and adjusts the difference from the actual usage status to achieve efficient operation of the system.

[0052] Furthermore, if the amount of electricity received from the external power system is kept at a configurable minimum and the amount of electricity transmitted from the device to the power system is kept at a maximum, it is possible to maximize the independence of the system through renewable energy generation measures and reduce operating costs and dependence on the external environment.

[0053] Therefore, according to this embodiment, the energy management device 14 is responsible for regulating the power generation of the renewable energy power generation device 1, the amount of hydrogen stored in the hydrogen storage device 3, and the actual amount of power and hydrogen provided to the electric vehicle and the fuel cell vehicle, as well as the predetermined amount of power and hydrogen.

[0054] According to the predicted value, the operation of the water electrolysis device 2 and the hydrogen power generation device 5, the operation of the heat storage and heat exchange device 8, and the amount of electricity transmitted from the external power system are determined, and each unit is operated and controlled, so as to use the power generation output of renewable energy and the hydrogen stored in the hydrogen power generation device 5 to build a stable, efficient and independent energy supply station for electric vehicles and hydrogen fuel cell vehicles. The present application can build a hydrogen-electricity co-supply station, using the electricity generated by renewable energy and the hydrogen stored in the hydrogen power generation device 5 to provide energy supply for electric vehicles and hydrogen fuel cell vehicles in a stable, efficient and independent manner.

[0055] Of course, the present invention is not limited to the above-described embodiments. Several other embodiments based on the design concept of the present invention are also provided below.

[0056] For example, in other embodiments, different from the above-described embodiments, Figure 2As shown, the present application also includes a heat supply device 15, which is connected to the power storage device 9, the heat storage and heat exchange device 8 and the hydrogen storage device 3 respectively.

[0057] The heat generated during the operation of the renewable energy power generation device 1 and the hydrogen power generation device 5 is stored in the heat storage tank 81 and then provided to the reactions requiring heat, such as water electrolysis in the water electrolysis device 2 and hydrogen release in the hydrogen storage device 3, to further improve the efficiency of the entire system. If necessary, the heat stored in the heat storage tank 81 can be taken out as hot water.

[0058] Furthermore, if the heat required by the system is greater than the stored heat, it can be compensated by burning part of the hydrogen stored in the hydrogen storage device 3 or by using the current of the power storage device 9 for heating.

[0059] Therefore, in the second embodiment, the water supply device 11 and the heat storage and heat exchange device 8 are connected by a pipeline, and the water supplied from the water supply device 11 to the heat storage and heat exchange device 8 is heated to hot water, so that the hot water in the heat storage and heat exchange device 8 is supplied to the water electrolysis device 2 and the hydrogen storage device 3. The heat supply device 15 can be used to supply heat to the heat storage and heat exchange device 8 to heat water and supply hot water, thereby improving system efficiency.

[0060] Furthermore, in addition to hot water, the heat required by the water electrolysis device 2 and the hydrogen storage device 3 may, in some cases, exceed the heat stored in the heat storage tank 81. Therefore, in the second embodiment, the energy management device 14 controls the power storage device 9 and the hydrogen storage device 3, and the heat supply device 15 generates heat by the current generated by the power storage device 9, and supplies the generated heat to the heat storage and heat exchange device 8, and burns part of the hydrogen stored in the hydrogen storage device 3 to supply the heat supply device 15.

[0061] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. An energy supply system for a new energy vehicle, characterized in that: include: A renewable energy power generation device (1) for generating electricity using renewable energy; A water electrolysis device (2) for producing hydrogen and oxygen using electricity generated by the renewable energy power generation device (1) and / or electricity supplied from an external power system; A hydrogen storage device (3) for storing hydrogen generated by the water electrolysis device (2); An oxygen storage device (4) for storing oxygen generated by the water electrolysis device (2); A hydrogen power generation device (5) for generating electricity using the hydrogen in the hydrogen storage device (3); A hydrogen supply device (6), used for using the hydrogen in the hydrogen storage device (3) and supplying the hydrogen to the first load unit; The power supply device (7) is used to use the power generated by the renewable energy power generation device (1) and / or the power generated by the hydrogen power generation device (5) and / or the power generated by the hydrogen power generation device (5) and supply it to the second load unit.

2. The energy supply system for a new energy vehicle according to claim 1, characterized in that: The hydrogen supply device (6) is a hydrogen filling machine, and the power supply device (7) is a charger or a charging station.

3. The energy supply system for a new energy vehicle according to claim 1, characterized in that: The first load unit is a hydrogen fuel cell vehicle, and the second load unit is an electric vehicle.

4. The energy supply system for a new energy vehicle according to claim 1, characterized in that: Also includes: A heat storage and heat exchange device (8) for storing heat generated by the renewable energy power generation device (1) and / or the hydrogen power generation device (5) during the power generation process, and supplying the heat to the water electrolysis device (2); The power storage device (9) is used to store the power generated by the renewable energy power generation device (1) and supply the power to the power supply device (7).

5. The energy supply system for a new energy vehicle according to claim 4, characterized in that: The heat storage and heat exchange device (8) comprises a heat storage tank (81) and a heat exchanger (82), and the power storage device (9) comprises an energy storage cabinet.

6. The energy supply system for a new energy vehicle according to claim 1, characterized in that: The renewable energy power generation device (1) comprises a wind power generation device and / or a photovoltaic power generation device.

7. The energy supply system for a new energy vehicle according to claim 1, characterized in that: The hydrogen storage device (3) comprises a hydrogen storage tank, and the oxygen storage device (4) comprises an oxygen storage tank.

8. The energy supply system for a new energy vehicle according to claim 1, characterized in that: The water electrolysis device (2) is an electrolyzer and / or a reversible fuel cell.

9. The energy supply system for a new energy vehicle according to claim 1, characterized in that: The hydrogen power generation device (5) is a fuel cell and / or a reversible electrolyzer.

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