A solid-state hydrogen storage thermal management system

Abstract

A solid-state hydrogen storage thermal management system provided in the present application includes a hydrogen storage unit and a thermal management unit, wherein the hydrogen storage unit is used to store and release hydrogen; the thermal management unit includes a circulation pump, a heat exchanger, a radiator, a heater, a diverter and a controller, the heat exchanger is arranged on the outside of the hydrogen storage unit, and a first temperature sensor is provided in the heat exchanger, the first temperature sensor is used to collect the real-time temperature of the fluid medium in the heat exchanger, the diverter includes a first flow channel and a second flow channel, the heat exchanger is connected to the circulation pump through the first flow channel, the heat exchanger is connected to the circulation pump after flowing through the radiator through the second flow channel, and the circulation pump is connected to the heat exchanger through the heater; the water bath temperature for storing and releasing hydrogen in the hydrogen storage unit can be adjusted by adjusting the output power of the circulation pump.

Description

Technical Field

[0001] The present application relates to the field of hydrogen storage technology, and in particular to a solid-state hydrogen storage thermal management system. Background Art

[0002] Hydrogen storage technologies primarily include material storage and physical storage. Physical hydrogen storage is divided into gaseous and liquid forms. Gaseous hydrogen storage, due to its advantages such as rapid charging and discharging, low energy consumption, low cost, and mature technology, has become the leading commercially available hydrogen storage technology. Solid-state hydrogen storage technology, with its high volumetric hydrogen storage density, safety, lack of a high-pressure container, and ability to increase hydrogen purity, can address the two most pressing issues of hydrogen energy: high-density storage and safe application. Furthermore, the hydrogen pressure generated by PEM and AEM water electrolysis meets the solid-state hydrogen storage charging pressure, making solid-state hydrogen storage technology considered one of the best hydrogen storage methods for off-grid power generation in conjunction with renewable energy.

[0003] Solid-state hydrogen storage utilizes the physical and chemical adsorption of hydrogen to store it within a solid material. During the hydrogen absorption process, the alloy hydrogen storage material, under certain temperatures and hydrogen pressures, undergoes an exothermic reaction to absorb hydrogen and form a metal hydride. During the dehydrogenation process, the metal hydride, when heated, undergoes an endothermic reaction to release the absorbed hydrogen. In existing technologies, excessively high or low temperatures can affect the ability of hydrogen storage units to store and release hydrogen. Summary of the Invention

[0004] In response to the above-mentioned problems, the present application proposes a solid-state hydrogen storage thermal management system, which solves the technical problem in the prior art that too high or too low temperature affects the storage and release of hydrogen by the hydrogen storage unit. The water bath temperature for storing and releasing hydrogen by the hydrogen storage unit can be adjusted by adjusting the output power of the circulation pump, so that the water bath temperature is maintained in an appropriate range.

[0005] The embodiment of the present application provides a solid-state hydrogen storage thermal management system, comprising a hydrogen storage unit and a thermal management unit, wherein:

[0006] The hydrogen storage unit is used to store and release hydrogen;

[0007] The thermal management unit is used to exchange heat released by the hydrogen storage unit when storing hydrogen and to provide heat when the hydrogen storage unit releases hydrogen. It includes a circulation pump, a heat exchanger, a radiator, a heater, a diverter and a controller. The heat exchanger is arranged outside the hydrogen storage unit. A first temperature sensor is provided in the heat exchanger. The first temperature sensor is used to collect the real-time temperature of the fluid medium in the heat exchanger. The diverter includes a first flow channel and a second flow channel. The heat exchanger is connected to the circulation pump through the first flow channel. The heat exchanger is connected to the circulation pump after flowing through the radiator through the second flow channel. The circulation pump is connected to the heat exchanger through the heater.

[0008] When the hydrogen storage unit stores hydrogen:

[0009] When the real-time temperature is lower than a first preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through a first flow channel;

[0010] When the real-time temperature is greater than or equal to a first preset temperature, the controller controls the circulation pump to operate at a second output so that the fluid medium in the heat exchanger flows through the first flow channel and the second flow channel, and the second output is greater than the first output;

[0011] When the hydrogen storage unit releases hydrogen:

[0012] When the real-time temperature is lower than a second preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through a first flow channel, and the controller controls the heater to operate at a first power;

[0013] When the real-time temperature is greater than or equal to a second preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through a first flow channel, and the controller controls the heater to operate at a second power, which is less than the first power.

[0014] In some embodiments, when the hydrogen storage unit stores hydrogen, the method includes:

[0015] When the real-time temperature is greater than a third preset temperature, the controller controls the circulation pump to operate at a third output to increase the flow rate of the fluid medium in the heat exchanger flowing through the second flow channel, and the third preset temperature is greater than the first preset temperature.

[0016] In some embodiments, when the hydrogen storage unit releases hydrogen, the method includes:

[0017] When the real-time temperature is greater than a fourth preset temperature, the controller controls the circulation pump to operate with a second output so that the fluid medium in the heat exchanger flows through the first flow channel and the second flow channel, and the controller controls the heater to stop working, and the fourth preset temperature is greater than the second preset temperature.

[0018] In some embodiments, the hydrogen storage unit includes a plurality of hydrogen storage cylinders and hydrogen storage valves disposed on the hydrogen storage cylinders.

[0019] In some embodiments, the radiator includes a compressor, a water pump, and a cooling box. The input end of the water pump is connected to the cooling box, the output end of the water pump is connected to the input end of the compressor, the output end of the compressor is connected to the cooling box, and the second flow channel flows through the cooling box.

[0020] In some embodiments, a spiral heat dissipation pipe is provided on the second flow channel, and the spiral heat dissipation pipe flows through the cooling box.

[0021] In some embodiments, a second temperature sensor is provided in the cooling box, and the second temperature sensor is used to collect the real-time temperature of the coolant in the cooling box.

[0022] In some embodiments, including:

[0023] When the real-time temperature of the coolant is greater than a first temperature threshold, the controller controls the water pump to start working and the compressor to start working;

[0024] When the real-time temperature of the coolant is less than or equal to a first temperature threshold, the controller controls the water pump and the compressor to stop working.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] When the hydrogen storage unit is storing hydrogen: when the real-time temperature is less than a first preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through the first flow channel; when the real-time temperature is greater than or equal to the first preset temperature, the controller controls the circulation pump to operate at a second output so that the fluid medium in the heat exchanger flows through the first flow channel and the second flow channel, and the second output is greater than the first output; when the hydrogen storage unit is releasing hydrogen: when the real-time temperature is less than the second preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through the first flow channel, and the controller controls the heater to operate at a first power; when the real-time temperature is greater than or equal to the second preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through the first flow channel, and the controller controls the heater to operate at a second power, and the second power is less than the first power; the water bath temperature for storing and releasing hydrogen in the hydrogen storage unit can be adjusted by adjusting the output power of the circulation pump, so that the water bath temperature is maintained within an appropriate range. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The embodiments of the present invention are further described below with reference to the accompanying drawings:

[0028] Figure 1 A schematic diagram of a framework of a solid-state hydrogen storage thermal management system provided in an embodiment of the present application;

[0029] Reference numerals:

[0030] 1-circulation pump, 2-heat exchanger, 3-heater, 4-diverter, 5-hydrogen storage cylinder, 6-hydrogen storage valve, 7-compressor, 8-water pump, 9-cooling box, 10-spiral heat pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting this application. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0033] If similar descriptions of "first\second\third" appear in the application documents, the following explanation will be added. In the following description, the terms "first\second\third" are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0035] The embodiment of the present application provides a solid-state hydrogen storage thermal management system. Figure 1 A schematic diagram of a solid-state hydrogen storage thermal management system provided in an embodiment of the present application is shown in FIG. Figure 1 Shown, including:

[0036] It includes a hydrogen storage unit and a thermal management unit, wherein:

[0037] The hydrogen storage unit is used to store and release hydrogen;

[0038] The thermal management unit is used to exchange heat released when the hydrogen storage unit stores hydrogen and to provide heat when the hydrogen storage unit releases hydrogen, and includes a circulation pump 1, a heat exchanger 2, a radiator, a heater 3, a diverter 4 and a controller. The heat exchanger 2 is arranged outside the hydrogen storage unit, and a first temperature sensor is provided in the heat exchanger 2. The first temperature sensor is used to collect the real-time temperature of the fluid medium in the heat exchanger 2. The diverter 4 includes a first flow channel and a second flow channel. The heat exchanger 2 is connected to the circulation pump 1 through the first flow channel, and the heat exchanger 2 is connected to the circulation pump 1 after flowing through the radiator through the second flow channel. The circulation pump 1 is connected to the heat exchanger 2 through the heater 3; the hydrogen storage unit includes a plurality of hydrogen storage cylinders 5 and hydrogen storage valves 6 provided on the hydrogen storage cylinders 5;

[0039] When the hydrogen storage unit stores hydrogen:

[0040] When the real-time temperature is lower than the first preset temperature, the controller controls the circulation pump 1 to operate at the first output so that the fluid medium in the heat exchanger 2 flows through the first flow channel;

[0041] When the real-time temperature is greater than or equal to the first preset temperature, the controller controls the circulation pump 1 to operate at a second output so that the fluid medium in the heat exchanger 2 flows through the first flow channel and the second flow channel, and the second output is greater than the first output;

[0042] When the hydrogen storage unit releases hydrogen:

[0043] When the real-time temperature is lower than the second preset temperature, the controller controls the circulation pump 1 to operate at a first output so that the fluid medium in the heat exchanger 2 flows through the first flow channel, and the controller controls the heater 3 to operate at a first power;

[0044] When the real-time temperature is greater than or equal to a second preset temperature, the controller controls the circulation pump 1 to operate at a first output so that the fluid medium in the heat exchanger 2 flows through a first flow channel, and the controller controls the heater 3 to operate at a second power, which is less than the first power.

[0045] In the embodiment of the present application, the real-time temperature of the fluid medium in the heat exchanger 2 is obtained by a temperature sensor. During the process of storing hydrogen in the hydrogen storage unit, the real-time temperature is compared with a first preset temperature. When the real-time temperature is lower than the first preset temperature, the temperature of the fluid medium is relatively low and no heat dissipation through the radiator is required. Therefore, the controller controls the circulation pump 1 to operate at the first output. At this time, the pressure difference generated by the pipeline resistance of the first flow channel of the diverter 4 is lower than the starting pressure of the second flow channel. Under the action of the circulation pump 1, the fluid medium flows through the first flow channel and does not flow through the second flow channel. The starting pressure refers to the minimum pressure required for the pipeline flow rate to be greater than 0. No energy consumption will be generated if the radiator is not working. When the real-time temperature is greater than or equal to the first preset temperature, the temperature of the fluid medium is high and the fluid medium needs to be cooled by heat dissipation through the radiator. Therefore, the controller controls the circulation pump 1 to operate at the second output. At this time, the pressure difference generated by the pipe resistance of the first flow channel of the diverter 4 is higher than the starting pressure of the second flow channel. A portion of the fluid medium flows through the second flow channel to dissipate heat through the radiator. The fluid medium cooled by the radiator merges with the fluid medium in the first flow channel, causing the temperature of the fluid medium returning to the heat exchanger 2 to drop, ensuring that the heat exchanged between the heat exchanger 2 and the hydrogen storage unit can be removed, thereby achieving the overall temperature of the fluid medium being controlled within an appropriate range. During the process of hydrogen release from the hydrogen storage unit, the real-time temperature and the second preset temperature are compared. When the real-time temperature is lower than the second preset temperature, the controller controls the circulation pump 1 to operate at the first output, the fluid medium in the heat exchanger 2 flows through the first flow channel, and the controller controls the heater 3 to operate at the first power. The fluid medium does not flow through the second flow channel. Therefore, the fluid medium does not dissipate heat through the radiator, which can reduce the power consumption of the heater 3. The heater 3 can quickly heat the fluid medium and reduce the heating time of the fluid medium. When the real-time temperature is greater than or equal to the second preset temperature, the controller controls the circulation pump 1 to operate at the first output so that the fluid medium in the heat exchanger 2 flows through the first flow channel, and the controller controls the heater 3 to operate at the second power, wherein the second power is less than the first power, and the heat lost by the fluid medium is supplemented by the heater 3, but it is possible to prevent the fluid medium from continuing to heat up, thereby achieving the overall temperature control of the fluid medium within an appropriate range.

[0046] In some embodiments, when the hydrogen storage unit stores hydrogen, the method includes:

[0047] When the real-time temperature is greater than a third preset temperature, the controller controls the circulation pump 1 to operate at a third output to increase the flow rate of the fluid medium in the heat exchanger 2 through the second flow channel, and the third preset temperature is greater than the first preset temperature.

[0048] In an embodiment of the present application, when the hydrogen storage unit is storing hydrogen, when the real-time temperature of the fluid medium in the heat exchanger 2 is greater than the third preset temperature, the controller controls the circulating pump 1 to operate with the third output to increase the flow rate of the fluid medium in the heat exchanger 2 through the second flow channel, thereby increasing the flow rate of the fluid medium flowing through the radiator, facilitating rapid cooling of the fluid medium, so as to ensure that the fluid medium flowing into the heat exchanger 2 meets the exchange of heat released by the hydrogen storage unit for storing hydrogen, and the temperature of the fluid medium is not too high, and the temperature of the fluid medium is further controlled to be within an appropriate range.

[0049] In some embodiments, when the hydrogen storage unit releases hydrogen, the method includes:

[0050] When the real-time temperature is greater than a fourth preset temperature, the controller controls the circulation pump 1 to operate with a second output so that the fluid medium in the heat exchanger 2 flows through the first flow channel and the second flow channel, and the controller controls the heater 3 to stop working, and the fourth preset temperature is greater than the second preset temperature.

[0051] In an embodiment of the present application, when the hydrogen storage unit releases hydrogen, when the real-time temperature of the fluid medium in the heat exchanger 2 is greater than the fourth preset temperature, the controller controls the circulation pump 1 to operate with the second output so that the fluid medium in the heat exchanger 2 flows through the first flow channel and the second flow channel, and the controller controls the heater 3 to stop working, and the fluid medium flowing through the first flow channel is no longer heated by the heater 3, and the fluid medium flowing through the second flow channel is cooled by the radiator. After cooling, the fluid medium merges with the fluid medium in the first flow channel, realizing rapid cooling of the fluid medium as a whole, so as to ensure that the fluid medium flowing into the heat exchanger 2 meets the heat required for releasing hydrogen from the hydrogen storage unit, and the temperature of the fluid medium is not too high, and the temperature of the fluid medium is further controlled within an appropriate range.

[0052] In some embodiments, the radiator includes a compressor 7, a water pump 8, and a cooling box 9. The output end of the water pump 8 is connected to the cooling box, the output end of the water pump 8 is connected to the input end of the compressor 7, the output end of the compressor 7 is connected to the cooling box, and the second flow channel flows through the cooling box.

[0053] In an embodiment of the present application, the second flow channel flows through the cooling box, and heat is exchanged between the coolant in the cooling box and the fluid medium flowing through the second flow channel, thereby realizing heat dissipation of the fluid medium. The coolant in the cooling box can also enter the compressor 7 through the water pump 8 for cooling and then return to the cooling box 9, thereby adjusting the temperature of the coolant in the cooling box.

[0054] In some embodiments, a spiral heat dissipation pipe 10 is provided on the second flow channel, and the spiral heat dissipation pipe 10 flows through the cooling box.

[0055] In an embodiment of the present application, a spiral heat dissipation tube 10 is provided on the second flow channel, and the spiral heat dissipation tube 10 flows through the cooling box, so that the spiral heat dissipation tube 10 can extend the time for the fluid medium to flow through the cooling box, thereby allowing the fluid medium flowing through the spiral heat dissipation tube 10 to fully exchange heat with the coolant in the cooling box.

[0056] In some embodiments, a second temperature sensor is provided in the cooling box, and the second temperature sensor is used to collect the real-time temperature of the coolant in the cooling box.

[0057] In an embodiment of the present application, a second temperature sensor is provided in the cooling box, and the controller can obtain the real-time temperature of the coolant and thereby control the start and stop of the water pump 8 and the compressor 7 according to the temperature, so as to facilitate heat exchange between the coolant and the fluid medium flowing through the second flow channel.

[0058] In some embodiments, including:

[0059] When the real-time temperature of the coolant is greater than the first temperature threshold, the controller controls the water pump 8 to start working and the compressor 7 to start working;

[0060] When the real-time temperature of the coolant is less than or equal to the first temperature threshold, the controller controls the water pump 8 and the compressor 7 to stop working.

[0061] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0062] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, object, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, object, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, object, or apparatus comprising the element.

[0063] The above is merely an embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A solid-state hydrogen storage thermal management system, characterized in that: It includes a hydrogen storage unit and a thermal management unit, wherein: The hydrogen storage unit is used to store and release hydrogen; The thermal management unit is used to exchange heat released by the hydrogen storage unit when storing hydrogen and to provide heat when the hydrogen storage unit releases hydrogen. It includes a circulation pump, a heat exchanger, a radiator, a heater, a diverter and a controller. The heat exchanger is arranged outside the hydrogen storage unit. A first temperature sensor is provided in the heat exchanger. The first temperature sensor is used to collect the real-time temperature of the fluid medium in the heat exchanger. The diverter includes a first flow channel and a second flow channel. The heat exchanger is connected to the circulation pump through the first flow channel. The heat exchanger is connected to the circulation pump after flowing through the radiator through the second flow channel. The circulation pump is connected to the heat exchanger through the heater. The radiator includes a compressor, a water pump, and a cooling box, wherein the input end of the water pump is connected to the cooling box, the output end of the water pump is connected to the input end of the compressor, the output end of the compressor is connected to the cooling box, and the second flow channel flows through the cooling box; The cooling box is provided with a second temperature sensor, which is used to collect the real-time temperature of the coolant in the cooling box; When the real-time temperature of the coolant is greater than a first temperature threshold, the controller controls the water pump to start working and the compressor to start working; When the real-time temperature of the coolant is less than or equal to a first temperature threshold, the controller controls the water pump to stop working and the compressor to stop working; When the hydrogen storage unit stores hydrogen: When the real-time temperature is lower than a first preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through a first flow channel; When the real-time temperature is greater than or equal to a first preset temperature, the controller controls the circulation pump to operate at a second output so that the fluid medium in the heat exchanger flows through the first flow channel and the second flow channel, and the second output is greater than the first output; When the hydrogen storage unit releases hydrogen: When the real-time temperature is lower than a second preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through a first flow channel, and the controller controls the heater to operate at a first power; When the real-time temperature is greater than or equal to a second preset temperature, the controller controls the circulation pump to operate at a first output so that the fluid medium in the heat exchanger flows through a first flow channel, and the controller controls the heater to operate at a second power, which is less than the first power.

2. A solid-state hydrogen storage thermal management system according to claim 1, characterized in that: When the hydrogen storage unit stores hydrogen, the method includes: When the real-time temperature is greater than a third preset temperature, the controller controls the circulation pump to operate at a third output to increase the flow rate of the fluid medium in the heat exchanger flowing through the second flow channel, and the third preset temperature is greater than the first preset temperature.

3. A solid-state hydrogen storage thermal management system according to claim 1, characterized in that: When the hydrogen storage unit releases hydrogen, the method includes: When the real-time temperature is greater than a fourth preset temperature, the controller controls the circulation pump to operate with a second output so that the fluid medium in the heat exchanger flows through the first flow channel and the second flow channel, and the controller controls the heater to stop working, and the fourth preset temperature is greater than the second preset temperature.

4. A solid-state hydrogen storage thermal management system according to claim 1, characterized in that: The hydrogen storage unit includes a plurality of hydrogen storage cylinders and hydrogen storage valves arranged on the hydrogen storage cylinders.

5. A solid-state hydrogen storage thermal management system according to claim 1, characterized in that: The second flow channel is provided with a spiral heat dissipation pipe, and the spiral heat dissipation pipe flows through the cooling box.

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