CN115366774A - Hydrogen energy cold chain vehicle based on cold accumulation hydrogen storage tank and use method thereof - Google Patents
Hydrogen energy cold chain vehicle based on cold accumulation hydrogen storage tank and use method thereof Download PDFInfo
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- CN115366774A CN115366774A CN202210949109.4A CN202210949109A CN115366774A CN 115366774 A CN115366774 A CN 115366774A CN 202210949109 A CN202210949109 A CN 202210949109A CN 115366774 A CN115366774 A CN 115366774A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00014—Combined heating, ventilating, or cooling devices for load cargos on load transporting vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3233—Cooling devices characterised by condensed liquid drainage means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/01—Arrangement of fuel conduits
- B60K15/013—Arrangement of fuel conduits of gas conduits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03309—Tanks specially adapted for particular fuels
- B60K2015/03315—Tanks specially adapted for particular fuels for hydrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Abstract
The invention provides a hydrogen energy cold chain vehicle based on a cold accumulation and hydrogen storage tank, wherein the cold accumulation and hydrogen storage tank comprises a tank body, a cold accumulation coil, a fifth one-way valve, a sixth one-way valve and an air valve, wherein the cold accumulation coil is positioned in the tank body, two ends of the cold accumulation coil are respectively communicated with a pipeline outside the tank body through the fifth one-way valve and the sixth one-way valve, the tank body is communicated with an external gas pipeline through the air valve, and water and a hydrate generation accelerant are arranged in a gap between the cold accumulation coil and the tank body; one end of the heat exchange coil is connected with a sixth one-way valve of the cold accumulation hydrogen storage tank through the solution pump, and the other end of the heat exchange coil is connected with a fifth one-way valve of the cold accumulation hydrogen storage tank; one end of the hydrogen storage device is connected with an air valve of the cold storage hydrogen storage tank through a pipeline, and the other end of the hydrogen storage device is sequentially connected with an air pump and an engine. The invention has the characteristics of energy conservation, high efficiency and no pollution, combines the cold accumulation and hydrogen storage of the hydrate with cold chain transportation, fully utilizes the energy generated when the hydrogen hydrate is generated, and realizes energy conservation, emission reduction and multiple utilization of the energy.
Description
Technical Field
The invention belongs to the field of cold chain transportation, and relates to a hydrogen energy cold chain vehicle based on a cold accumulation hydrogen storage tank and a use method thereof.
Background introduction
Cold chain logistics is a key link for guaranteeing the safety of food and medicine circulation, along with the improvement of the life quality of modern people, the demand of agricultural products such as fresh fruits and vegetables and medicines stored at low temperature is increased, and the cold chain logistics industry is increasingly important, but the problems of insufficient infrastructure, high goods loss rate, serious temperature loss problem and the like exist in the existing cold chain technology, and the traditional cold chain oil truck has the problems of high oil consumption, large environmental pollution and high transportation cost, and the existing hydrogen storage cold chain truck has the advantages of low ice storage density, low phase change temperature, low refrigerating unit efficiency and weak hydrogen storage capacity.
Disclosure of Invention
The invention provides a hydrogen energy cold chain vehicle based on a cold accumulation hydrogen storage tank and a using method thereof, aiming at solving the problems in the existing cold chain transportation. In order to achieve the purpose, the invention adopts the following technical scheme:
a hydrogen energy cold chain vehicle based on a cold accumulation hydrogen storage tank comprises a vehicle body, an engine, a hydrogen storage device and an air pump, and further comprises the cold accumulation hydrogen storage tank, and a heat exchange coil and a solution pump which are arranged in the vehicle body; the cold accumulation hydrogen storage tank comprises a tank body, a cold accumulation coil pipe, a fifth one-way valve, a sixth one-way valve and an air valve, wherein the cold accumulation coil pipe is positioned in the tank body, two ends of the cold accumulation coil pipe are respectively communicated with a pipeline outside the tank body through the fifth one-way valve and the sixth one-way valve, the tank body is communicated with an external gas pipeline through the air valve, and water and a hydrate generation accelerant are arranged in a gap between the cold accumulation coil pipe and the tank body; one end of the heat exchange coil is connected with a sixth one-way valve of the cold accumulation hydrogen storage tank through the solution pump, and the other end of the heat exchange coil is connected with a fifth one-way valve of the cold accumulation hydrogen storage tank; one end of the hydrogen storage device is connected with the air valve of the cold storage hydrogen storage tank through a pipeline, and the other end of the hydrogen storage device is sequentially connected with the air pump and the engine.
Preferably, the cold-storage coil outlet end pass through the second lateral line with heat exchange coil's entry end is connected, be equipped with first check valve on the second lateral line, the solution pump is located first check valve with between the heat exchange coil, the entry end of cold-storage coil passes through first lateral line with heat exchange coil's exit end is connected, be equipped with the second check valve on the first lateral line, the pipeline of being connected between hydrogen storage device and the cold-storage hydrogen storage tank is the third lateral line, be equipped with the third check valve on the third lateral line.
Preferably, a drying device is arranged between the third one-way valve and the hydrogen storage device.
Preferably, the drying device is internally filled with anhydrous calcium chloride or anhydrous magnesium sulfate.
Preferably, the tank body of cold-storage hydrogen storage tank is the metal material, tank body outside package is equipped with the insulating layer, the insulating layer is polyurethane foam, the tank body height is 940mm, and the diameter is 165mm, and the internal volume is 10L.
Preferably, the hydrate formation promoter is TBAB or THF.
Preferably, the cold accumulation coil is a spiral seamless carbon steel pipe, the diameter of the spiral seamless carbon steel pipe is 8cm, and the wall thickness of the spiral seamless carbon steel pipe is 1cm.
Preferably, the heat exchange coil is a fin heat exchange tube, the heat exchange coil is uniformly distributed on the top of the vehicle body, and the heat exchange coil is made of copper.
Preferably, a fourth check valve is arranged between the hydrogen storage device and the air pump.
A use method of a hydrogen energy cold chain vehicle based on a cold accumulation hydrogen storage tank comprises the following steps:
s1, opening an air valve of the cold accumulation hydrogen storage tank, and communicating external high-pressure hydrogen to enable the interior of the cold accumulation hydrogen storage tank to be filled with the high-pressure hydrogen;
s2, opening the fifth one-way valve and the sixth one-way valve, connecting an interface of the cold accumulation hydrogen storage tank to an external refrigerating unit, enabling a low-temperature cold-carrying liquid to flow into the cold accumulation coil pipe after flowing through the refrigerating unit for cooling, enabling the temperature in the cold accumulation hydrogen storage tank to be reduced, enabling hydrogen and water to generate hydrates, and storing the hydrogen and cold;
s3, after the hydrogen storage of the S1 and the cold storage of the S2 are finished, closing an air valve, a fifth one-way valve and a sixth one-way valve of the cold storage and hydrogen storage tank;
s4, respectively connecting a fifth one-way valve, a sixth one-way valve and an air valve of the cold accumulation hydrogen storage tank to a first branch pipeline, a second branch pipeline and a third branch pipeline in the vehicle body;
s5, opening the sixth one-way valve, a first one-way valve on a second branch pipeline, a second one-way valve on the first branch pipeline, a fifth one-way valve and a solution pump, enabling the cold-carrying liquid to absorb cold energy of hydrogen hydrate in the cold accumulation coil pipe for cooling, enabling the cold-carrying liquid to reach the heat exchange coil pipe through the second branch pipeline, exchanging heat with air in the vehicle body to reduce the temperature in the vehicle body, enabling the cold-carrying liquid to return to the cold accumulation coil pipe through the first branch pipeline for cooling again, enabling the cold-carrying liquid to reach the heat exchange coil pipe through the second branch pipeline after cooling to exchange heat with the air in the vehicle body, and continuously and circularly reducing the temperature of the compartment in the way;
s6, decomposing the hydrogen hydrate after heat exchange, opening the gas valve, enabling the hydrogen in the cold accumulation and hydrogen storage tank to enter a drying device through a third one-way valve on the third branch pipeline, removing water mixed in the hydrogen and then entering the hydrogen storage device;
and S7, when the hydrogen energy cold chain vehicle moves, opening a fourth one-way valve between the hydrogen storage device and the air pump, and regulating the rate of hydrogen entering the engine by controlling the power of the air pump so as to regulate the power of the engine.
The invention relates to a hydrogen energy cold chain vehicle based on a cold accumulation and hydrogen storage tank and a using method thereof.A hydrate cold accumulation and hydrogen storage system is adopted, the cold energy can be stably and continuously released by using a hydrate during decomposition to maintain the ambient temperature of a cold chain, natural cold release is realized, one tank reaches the end, the characteristics of hydrogen generation and cold energy absorption when the hydrate is chemically changed are fully utilized to store hydrogen and store cold, the hydrogen released during decomposition can be used as a clean fuel of the cold chain vehicle, the defects of high oil consumption, large environmental pollution, high transportation cost and the like of the traditional cold chain vehicle are overcome, the characteristics of energy conservation, high efficiency and no pollution are realized, the hydrate cold accumulation and hydrogen storage are combined with the cold chain transportation, the energy generated during the generation of the hydrogen hydrate is fully utilized, and the multiple utilization of energy is realized.
Drawings
FIG. 1 is a schematic structural diagram of a hydrogen energy cold chain vehicle for storing hydrogen by hydrate cold accumulation;
fig. 2 is a schematic structural view of the cold-storage hydrogen storage tank.
In the figure: 1. the system comprises a vehicle body, 2, an engine, 3, a cold accumulation and hydrogen storage tank, 4, a hydrogen storage device, 5, a heat exchange coil, 6, a cold accumulation coil, 7, a first branch pipeline, 8, a second branch pipeline, 9, a third branch pipeline, 10, a first check valve, 11, a second check valve, 12, a third check valve, 13, a fourth check valve, 14, a fifth check valve, 15, a sixth check valve, 16, an air valve, 17, a solution pump, 18, a drying device, 19 and an air pump.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The hydrogen energy cold chain vehicle based on the cold accumulation and hydrogen storage tank comprises a vehicle body 1, an engine 2, a hydrogen storage device 4 and an air pump 19, and further comprises a cold accumulation and hydrogen storage tank 3, and a heat exchange coil 5 and a solution pump 17 which are arranged inside the vehicle body 1, as shown in fig. 2, the cold accumulation and hydrogen storage tank 3 comprises a tank body, a cold accumulation coil 6, a fifth check valve 14, a sixth check valve 15 and an air valve 16, wherein the cold accumulation coil 6 is arranged inside the tank body, two ends of the cold accumulation coil 6 are respectively communicated with an external pipeline of the tank body through the fifth check valve 14 and the sixth check valve 15, the tank body is communicated with an external gas pipeline through the air valve 16, and water and a hydrate generation accelerant are arranged in a gap between the cold accumulation coil 6 and the tank body; one end of the heat exchange coil 5 is connected with a sixth one-way valve 15 of the cold accumulation hydrogen storage tank 3 through a solution pump 17, and the other end of the heat exchange coil 5 is connected with a fifth one-way valve 14 of the cold accumulation hydrogen storage tank 3; one end of the hydrogen storage device 4 is connected with an air valve 16 of the cold storage hydrogen storage tank 3 through a pipeline, and the other end of the hydrogen storage device 4 is sequentially connected with an air pump 19 and the engine 2.
The outlet end of the cold accumulation coil 6 is connected with the inlet end of the heat exchange coil 5 through a second branch pipeline 8, the second branch pipeline 8 is provided with a first one-way valve 10, the solution pump 17 is arranged between the first one-way valve 10 and the heat exchange coil 5, the inlet end of the cold accumulation coil 6 is connected with the outlet end of the heat exchange coil 5 through a first branch pipeline 7, the first branch pipeline 7 is provided with a second one-way valve 11, the pipeline connected between the hydrogen storage device 4 and the cold accumulation hydrogen storage tank 3 is a third branch pipeline 9, and the third branch pipeline 9 is provided with a third one-way valve 12. Cold-storage hydrogen storage tank 3 and first branch pipeline 7, second branch pipeline 8 and third branch pipeline 9 all can be through interface connection, can conveniently carry out cold-storage hydrogen storage tank 3's change through interface connection. A drying device 18 is arranged between the third one-way valve 12 and the hydrogen storage device 4, and neutral drying agents such as anhydrous calcium chloride or anhydrous magnesium sulfate are arranged in the drying device 18. The cold-storage hydrogen storage tank 3 is made of metal, the tank body is wrapped by a heat insulation layer made of polyurethane foam, the height of the tank body is 940mm, the diameter of the tank body is 165mm, and the internal volume of the tank body is 10L. Can once only place a plurality of cold-storage hydrogen storage tank 3 on the cold chain car, conveniently carry out cold-storage hydrogen storage tank 3's change, the hydrate formation promoter in cold-storage hydrogen storage tank 3 jar body can be TBAB (tetrabutyl ammonium bromide) or THF (tetrahydrofuran), can promote hydrogen hydrate formation. The cold accumulation coil 6 is a spiral seamless carbon steel pipe, the diameter of the spiral seamless carbon steel pipe is 8cm, and the wall thickness of the spiral seamless carbon steel pipe is 1cm, so that the cold accumulation coil 6 can bear larger pressure. Heat exchange coil 5 is the fin heat exchange tube, and heat exchange coil 5 evenly distributed is at 1 top of automobile body, and heat exchange coil 5's material can be for heat conduction materials such as copper.
Example 2
The use method of the hydrogen energy cold chain vehicle based on the cold accumulation hydrogen storage tank comprises the following steps:
s1, opening an air valve 16 of a cold accumulation hydrogen storage tank 3, and connecting external high-pressure hydrogen to ensure that the inside of the cold accumulation hydrogen storage tank 3 is filled with the high-pressure hydrogen;
depending on the domestic peak-valley electricity price policy, the cold and hydrogen storage operation can be carried out on the cold and hydrogen storage tank 3 at the night electricity price low valley period;
s2, opening a fifth one-way valve 14 and a sixth one-way valve 15, connecting an interface of the cold accumulation hydrogen storage tank 3 to an external refrigerating unit, enabling the low-temperature cold-carrying liquid to flow into the cold accumulation coil 6 after flowing through the refrigerating unit for cooling so as to reduce the temperature in the cold accumulation hydrogen storage tank 3, enabling hydrogen and water to generate hydrates, and storing the hydrogen and cold;
s3, after the hydrogen storage of the S1 and the cold storage of the S2 are finished, closing an air valve 16, a fifth one-way valve 14 and a sixth one-way valve 15 of the cold storage hydrogen storage tank 3;
after cold accumulation and hydrogen storage are finished, the cold accumulation hydrogen storage tanks 3 with finished energy storage of the batch can be taken out for packaging and storage for standby use, and meanwhile, the next batch of cold accumulation hydrogen storage tanks 3 can be placed for continuous cold accumulation and hydrogen storage operation;
s4, respectively connecting a fifth one-way valve 14, a sixth one-way valve 15 and an air valve 16 of the cold accumulation hydrogen storage tank 3 to a first branch pipeline 7, a second branch pipeline 8 and a third branch pipeline 9 in the vehicle body 1;
s5, opening a sixth one-way valve 15, a first one-way valve 10 on a second branch pipeline 8, a second one-way valve 11 on a first branch pipeline 7, a fifth one-way valve 14 and a solution pump 17, enabling the cold-carrying liquid to absorb cold energy of the hydrogen hydrate in the cold accumulation coil 6 for cooling, enabling the cold-carrying liquid to reach the heat exchange coil 5 through the second branch pipeline 8 to exchange heat with air in the vehicle body 1 to reduce the temperature in the vehicle body 1, then returning to the cold accumulation coil 6 through the first branch pipeline 7 for cooling again, enabling the cooled cold-carrying liquid to reach the heat exchange coil 5 through the second branch pipeline 8 to exchange heat with the air in the vehicle body 1, and continuously and circularly reducing the temperature of the compartment;
s6, decomposing the hydrogen hydrate after heat exchange, opening an air valve 16, allowing the hydrogen in the cold accumulation hydrogen storage tank 3 to enter a drying device 18 through a third one-way valve 12 on a third branch pipeline 9, removing water mixed in the hydrogen and then entering a hydrogen storage device 4;
s7, when the hydrogen energy cold chain vehicle moves, the fourth one-way valve 13 between the hydrogen storage device 4 and the air pump 19 is opened, the rate of hydrogen entering the engine 2 is adjusted by controlling the power of the air pump 19, and then the power of the engine 2 is adjusted.
The invention combines the hydrate cold accumulation and hydrogen storage with the cold chain transportation, fully utilizes the energy generated when the hydrogen hydrate is generated, realizes energy conservation and emission reduction and multiple utilization of the energy, and also overcomes the defects of high oil consumption, large environmental pollution, high transportation cost and the like of the traditional cold chain vehicle.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A hydrogen energy cold chain vehicle based on a cold accumulation and hydrogen storage tank comprises a vehicle body (1), an engine (2), a hydrogen storage device (4) and a gas pump (19), and is characterized by further comprising a cold accumulation and hydrogen storage tank (3), and a heat exchange coil (5) and a solution pump (17) which are arranged in the vehicle body (1); the cold storage and hydrogen storage tank (3) comprises a tank body, a cold storage coil (6), a fifth one-way valve (14), a sixth one-way valve (15) and an air valve (16), wherein the cold storage coil (6) is positioned in the tank body, two ends of the cold storage coil are respectively communicated with an external pipeline of the tank body through the fifth one-way valve (14) and the sixth one-way valve (15), the tank body is communicated with an external air pipeline through the air valve (16), and water and a hydrate generation accelerant are arranged in a gap between the cold storage coil (6) and the tank body; one end of the heat exchange coil (5) is connected with a sixth one-way valve (15) of the cold accumulation hydrogen storage tank (3) through the solution pump (17), and the other end of the heat exchange coil (5) is connected with a fifth one-way valve (14) of the cold accumulation hydrogen storage tank (3); one end of the hydrogen storage device (4) is connected with an air valve (16) of the cold storage hydrogen storage tank (3) through a pipeline, and the other end of the hydrogen storage device (4) is sequentially connected with an air pump (19) and an engine (2).
2. The hydrogen energy cold chain vehicle based on the cold accumulation and hydrogen storage tank is characterized in that the outlet end of the cold accumulation coil (6) is connected with the inlet end of the heat exchange coil (5) through a second branch pipeline (8), a first one-way valve (10) is arranged on the second branch pipeline (8), the solution pump (17) is arranged between the first one-way valve (10) and the heat exchange coil (5), the inlet end of the cold accumulation coil (6) is connected with the outlet end of the heat exchange coil (5) through a first branch pipeline (7), a second one-way valve (11) is arranged on the first branch pipeline (7), a third branch pipeline (9) is arranged on a pipeline connected between the hydrogen storage device (4) and the cold accumulation and hydrogen storage tank (3), and a third one-way valve (12) is arranged on the third branch pipeline (9).
3. A hydrogen cold chain vehicle based on cold-storage hydrogen-storage tank, according to claim 2, characterized in that a drying device (18) is provided between the third one-way valve (12) and the hydrogen-storage device (4).
4. The hydrogen energy cold chain vehicle based on the cold accumulation hydrogen storage tank is characterized in that the drying device (18) is internally provided with anhydrous calcium chloride or anhydrous magnesium sulfate.
5. The hydrogen cold chain vehicle based on the cold accumulation hydrogen storage tank is characterized in that the tank body of the cold accumulation hydrogen storage tank (3) is made of metal, the outside of the tank body is wrapped with a heat insulation layer made of polyurethane foam, the height of the tank body is 940mm, the diameter of the tank body is 165mm, and the internal volume of the tank body is 10L.
6. The cold-chain vehicle based on cold-storage hydrogen storage tank of claim 1, wherein the hydrate formation promoter is TBAB or THF.
7. The hydrogen energy cold chain vehicle based on the cold accumulation hydrogen storage tank is characterized in that the cold accumulation coil (6) is a spiral seamless carbon steel pipe, the diameter of the spiral seamless carbon steel pipe is 8cm, and the wall thickness of the spiral seamless carbon steel pipe is 1cm.
8. The hydrogen energy cold chain vehicle based on the cold accumulation hydrogen storage tank is characterized in that the heat exchange coil (5) is a finned heat exchange tube, the heat exchange coil (5) is uniformly distributed on the top of the vehicle body (1), and the heat exchange coil (5) is made of copper.
9. A hydrogen cold chain vehicle based on cold-storage hydrogen-storage tank, according to claim 1, characterized in that a fourth one-way valve (13) is arranged between the hydrogen storage device (4) and the air pump (19).
10. A use method of a hydrogen energy cold chain vehicle based on a cold accumulation hydrogen storage tank is characterized by comprising the following steps:
s1, opening an air valve (16) of the cold accumulation hydrogen storage tank (3), and connecting external high-pressure hydrogen to ensure that the cold accumulation hydrogen storage tank (3) is filled with the high-pressure hydrogen;
s2, opening the fifth one-way valve (14) and the sixth one-way valve (15), connecting an interface of the cold accumulation hydrogen storage tank (3) to an external refrigerating unit, enabling a low-temperature cold-carrying liquid to flow into the cold accumulation coil (6) after flowing through the refrigerating unit for cooling, enabling the temperature in the cold accumulation hydrogen storage tank (3) to be reduced, enabling hydrogen and water to generate hydrates, and storing the hydrogen and the cold;
s3, after the hydrogen storage of the S1 and the cold storage of the S2 are finished, closing an air valve (16), a fifth one-way valve (14) and a sixth one-way valve (15) of the cold storage and hydrogen storage tank (3);
s4, respectively connecting a fifth one-way valve (14), a sixth one-way valve (15) and an air valve (16) of the cold accumulation hydrogen storage tank (3) to a first branch pipeline (7), a second branch pipeline (8) and a third branch pipeline (9) in the vehicle body (1);
s5, opening the sixth one-way valve (15), a first one-way valve (10) on a second branch pipeline (8), a second one-way valve (11) on a first branch pipeline (7), a fifth one-way valve (14) and a solution pump (17), enabling cold-carrying liquid to absorb cold energy of hydrogen hydrate in the cold accumulation coil (6) for cooling, enabling the cold-carrying liquid to reach the heat exchange coil (5) through the second branch pipeline (8), exchanging heat with air in the vehicle body (1), reducing the temperature in the vehicle body (1), enabling the cold-carrying liquid to return to the cold accumulation coil (6) through the first branch pipeline (7) for cooling again, enabling the cold-carrying liquid to reach the heat exchange coil (5) through the second branch pipeline (8) after cooling, exchanging heat with the air in the vehicle body (1), and continuously and circularly reducing the temperature of the compartment;
s6, decomposing the hydrogen hydrate after heat exchange, opening the gas valve (16), allowing the hydrogen in the cold accumulation hydrogen storage tank (3) to enter a drying device (18) through a third one-way valve (12) on the third branch pipeline (9), removing water mixed in the hydrogen, and then allowing the hydrogen to enter the hydrogen storage device (4);
s7, when the hydrogen energy cold chain vehicle moves, a fourth one-way valve (13) between the hydrogen storage device (4) and the air pump (19) is opened, the rate of hydrogen entering the engine (2) is adjusted by controlling the power of the air pump (19), and then the power of the engine (2) is adjusted.
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