Solid hydrogen storage thermal management system

Abstract

The solid hydrogen storage thermal management system comprises a hydrogen storage unit and a thermal management unit, and the hydrogen storage unit is used for storing and releasing hydrogen; the heat management unit comprises a circulating pump, a heat exchanger, a radiator, a heater, a flow divider and a controller, the heat exchanger is arranged on the outer side of the hydrogen storage unit, a first temperature sensor is arranged in the heat exchanger, and the first temperature sensor is used for collecting the real-time temperature of a fluid medium in the heat exchanger; the flow divider comprises a first flow channel and a second flow channel, the heat exchanger is connected with the circulating pump through the first flow channel, the heat exchanger flows through the radiator through the second flow channel and then is connected with the circulating pump, and the circulating pump is connected with the heat exchanger through the heater; the water bath temperature of hydrogen storage and hydrogen release of the hydrogen storage unit can be adjusted by adjusting the output power of the circulating 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 mainly include material hydrogen storage and physical hydrogen storage. Physical hydrogen storage is divided into gaseous hydrogen storage and liquid hydrogen storage. Gaseous hydrogen storage has become the first commercially applied hydrogen storage technology due to its advantages such as fast hydrogen charging and discharging speed, low hydrogen storage energy consumption, low cost and mature technology. Solid-state hydrogen storage technology can solve the two problems of high-density storage and safe application of hydrogen energy that people are most concerned about, due to its high volume hydrogen storage density, safety, no need for high-pressure containers, and the ability to increase the purity of hydrogen. At the same time, the hydrogen pressure generated by PEM and AEM water electrolysis to produce hydrogen meets the solid-state hydrogen storage filling pressure, so solid-state hydrogen storage technology is considered to be one of the best hydrogen storage methods for off-grid power generation in conjunction with renewable energy.

[0003] Solid-state hydrogen storage refers to the use of materials to store hydrogen in solid materials by physical and chemical adsorption. During the hydrogen absorption process, the alloy hydrogen storage material absorbs hydrogen to form metal hydrides under a certain temperature and hydrogen pressure, and undergoes an exothermic reaction. During the hydrogen release process, the metal hydride undergoes an endothermic reaction under heating to release the absorbed hydrogen. In the prior art, too high or too low temperature affects the storage and release of hydrogen by the hydrogen storage unit. 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, and can adjust the water bath temperature of the hydrogen storage unit for storing and releasing hydrogen by adjusting the output power of the circulating 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, including 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, and includes a circulation pump, a heat exchanger, a radiator, a heater, a flow divider and a controller. The heat exchanger is arranged outside the hydrogen storage unit, and a first temperature sensor is arranged inside the heat exchanger. The first temperature sensor is used to collect the real-time temperature of the fluid medium in the heat exchanger. The flow divider includes a first flow channel and a second flow channel. The heat exchanger is connected to the circulation pump through the first flow channel, and 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 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 a first flow channel;

[0010] When the real-time temperature is greater than or equal to the first 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 second output is greater than the first output;

[0011] When the hydrogen storage unit releases hydrogen:

[0012] 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 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, it 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 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, it 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 to allow the fluid medium in the heat exchanger to flow through the first flow channel and the second flow channel, and the controller controls the heater to stop operating, 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 cold water tank. The output end of the water pump is connected to the cooling tank, 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 tank, and the second flow channel flows through the cooling tank.

[0020] In some embodiments, a spiral heat dissipation pipe is disposed 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 the first temperature threshold, the controller controls the water pump to stop working and the compressor to stop working.

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

[0026] In the case where the hydrogen storage unit stores hydrogen: when the real-time temperature is less than the first preset temperature, the controller controls the circulating pump to work with the 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 circulating pump to work with the 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; in the case where the hydrogen storage unit releases hydrogen: when the real-time temperature is less than the second preset temperature, the controller controls the circulating pump to work with the first output so that the fluid medium in the heat exchanger flows through the first flow channel, and the controller controls the heater to work with the first power; when the real-time temperature is greater than or equal to the second preset temperature, the controller controls the circulating pump to work with the first output so that the fluid medium in the heat exchanger flows through the first flow channel, and the controller controls the heater to work with the second power, and the second power is less than the first power; the water bath temperature of the hydrogen storage unit for storing and releasing hydrogen can be adjusted by adjusting the output power of the circulating pump, so that the water bath temperature is maintained in 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-cold water tank, 10-spiral heat dissipation pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the 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 describe 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 instructions will be added. In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in 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 those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0035] The present application embodiment 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 As 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 for heat exchange of heat released when the hydrogen storage unit stores hydrogen and for providing heat when the hydrogen storage unit releases hydrogen, and comprises a circulation pump 1, a heat exchanger 2, a radiator, a heater 3, a diverter 4 and a controller, wherein the heat exchanger 2 is arranged outside the hydrogen storage unit, and a first temperature sensor is arranged inside the heat exchanger 2, and the first temperature sensor is used for collecting the real-time temperature of the fluid medium in the heat exchanger 2, the diverter 4 comprises 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, the heat exchanger 2 is connected to the circulation pump 1 after flowing through the radiator through the second flow channel, and the circulation pump 1 is connected to the heat exchanger 2 through the heater 3; the hydrogen storage unit comprises a plurality of hydrogen storage cylinders 5 and hydrogen storage valves 6 arranged 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 work 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 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 a 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 the second preset temperature, the controller controls the circulation pump 1 to operate with 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 with 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. In the process of storing hydrogen in the hydrogen storage unit, the real-time temperature is compared with the first preset temperature. When the real-time temperature is less than the first preset temperature, the temperature of the fluid medium is low and there is no need to dissipate heat through the radiator. Therefore, the controller controls the circulation pump 1 to work with 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. The fluid medium flows through the first flow channel under the action of the circulation pump 1 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, and no energy consumption will be generated if the radiator does not work. When the real-time temperature is greater than or equal to the first preset temperature, the temperature of the fluid medium is relatively high, and the fluid medium needs to be cooled by heat dissipation through the radiator. Therefore, the controller controls the circulating pump 1 to work with the second output. At this time, the pressure difference generated by the pipeline resistance of the first flow channel of the diverter 4 is higher than the starting pressure of the second flow channel. A part of the fluid medium flows through the second flow channel through the radiator for heat dissipation. The fluid medium cooled by the radiator merges with the fluid medium in the first flow channel, so that the temperature of the fluid medium returning to the heat exchanger 2 decreases, ensuring that the heat exchanged between the heat exchanger 2 and the hydrogen storage unit can be taken away, thereby achieving the overall temperature control of the fluid medium within a suitable range. In the process of releasing hydrogen from the hydrogen storage unit, the real-time temperature and the second preset temperature are compared. When the real-time temperature is less than the second preset temperature, the controller controls the circulating pump 1 to work with the first output, and the fluid medium in the heat exchanger 2 flows through the first flow channel. The controller controls the heater 3 to work with the first power, and the fluid medium will not flow through the second flow channel. Therefore, the fluid medium will not dissipate heat through the radiator, which can reduce the power consumption of the heater 3. The heater 3 can quickly heat up 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 with 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 with 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 the fluid medium can be prevented 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, it 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 the 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 satisfies 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, it 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 operating, 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 to allow the fluid medium in the heat exchanger 2 to flow 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, and the overall fluid medium is cooled rapidly to ensure that the fluid medium flowing into the heat exchanger 2 meets the heat required to release 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 cold water tank 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 the 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 refrigeration and then return to the cold water tank 9, thereby adjusting the temperature of the coolant in the cooling box.

[0054] In some embodiments, a spiral heat dissipation pipe 10 is disposed 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, so that the fluid medium flowing through the spiral heat dissipation tube 10 can 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 to stop working and the compressor 7 to stop working.

[0061] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that 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 various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and 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 sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0062] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, object or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, object or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, object or device including the element.

[0063] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A solid-state hydrogen storage thermal management system, It is 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, and includes a circulation pump, a heat exchanger, a radiator, a heater, a flow divider and a controller. The heat exchanger is arranged outside the hydrogen storage unit, and a first temperature sensor is arranged inside the heat exchanger. The first temperature sensor is used to collect the real-time temperature of the fluid medium in the heat exchanger. The flow divider includes a first flow channel and a second flow channel. The heat exchanger is connected to the circulation pump through the first flow channel, and 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; When the hydrogen storage unit stores 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 a 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 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 second output is greater than the first output; When the hydrogen storage unit releases 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 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, It is characterized in that When the hydrogen storage unit stores hydrogen, it 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 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, It is characterized in that When the hydrogen storage unit releases hydrogen, the method comprises: When the real-time temperature is greater than a fourth preset temperature, the controller controls the circulation pump to operate with a second output to allow the fluid medium in the heat exchanger to flow through the first flow channel and the second flow channel, and the controller controls the heater to stop operating, 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, It is 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, It is characterized in that The radiator includes a compressor, a water pump, and a cold water tank. The output end of the water pump is connected to the cooling tank, 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 tank, and the second flow channel flows through the cooling tank.

6. A solid-state hydrogen storage thermal management system according to claim 5, It is 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.

7. A solid-state hydrogen storage thermal management system according to claim 5, It is characterized in that The cooling box is provided with a second temperature sensor, and the second temperature sensor is used to collect the real-time temperature of the coolant in the cooling box.

8. A solid-state hydrogen storage thermal management system according to claim 7, It is characterized in that include: 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 the first temperature threshold, the controller controls the water pump to stop working and the compressor to stop working.

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