CN114407950B - Hydrogen internal combustion power vehicle and method based on high-pressure hydrogen expansion work and waste heat utilization - Google Patents
Hydrogen internal combustion power vehicle and method based on high-pressure hydrogen expansion work and waste heat utilization Download PDFInfo
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- CN114407950B CN114407950B CN202210048133.0A CN202210048133A CN114407950B CN 114407950 B CN114407950 B CN 114407950B CN 202210048133 A CN202210048133 A CN 202210048133A CN 114407950 B CN114407950 B CN 114407950B
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- hydrogen
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- heat
- pressure hydrogen
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000001257 hydrogen Substances 0.000 title claims abstract description 138
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 138
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 60
- 239000002918 waste heat Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004378 air conditioning Methods 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000005057 refrigeration Methods 0.000 claims description 26
- 238000010248 power generation Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 239000013589 supplement Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000003570 air Substances 0.000 description 36
- 239000000446 fuel Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C5/00—Locomotives or motor railcars with IC engines or gas turbines
Abstract
The invention discloses a hydrogen internal combustion power vehicle and a method based on high-pressure hydrogen expansion work and waste heat utilization, which aim to solve the problem of energy consumption of an air conditioner of a hydrogen internal combustion power vehicle. The invention applies the cold energy generated by the refrigerating system in the vehicle hydrogen power system to the air-conditioning refrigerating system of the vehicle, and applies the heat generated by the hydrogen internal combustion engine in the vehicle hydrogen power system to the air-conditioning heating system of the vehicle to fully utilize the waste heat of the internal combustion engine and the expansion work of high-pressure hydrogen, thereby greatly reducing the air-conditioning energy consumption in the vehicle and improving the comprehensive energy utilization rate of the vehicle.
Description
Technical Field
The invention relates to a hydrogen internal combustion power vehicle, in particular to a hydrogen internal combustion power vehicle based on high-pressure hydrogen expansion work and waste heat utilization.
Background
Hydrogen energy is a clean secondary energy source, and is widely focused on the application of the hydrogen energy in vehicles, but when the hydrogen is used as fuel to drive an internal combustion vehicle, a lot of redundant energy is generated, and a better solution is not available at present how to reasonably utilize the redundant energy, and further reduce the energy consumption of the vehicle. High pressure gaseous hydrogen storage is currently the most commonly used form of hydrogen storage. The high-pressure hydrogen stored in the high-pressure tank is usually required to be depressurized to the hydrogen supply pressure required by the hydrogen utilization device before entering the hydrogen utilization device, and the expansion work and the cold energy generated by volume expansion in the current hydrogen depressurization process are not reasonably utilized.
Patent CN 106837529B discloses a hydrogen energy automobile power system for purifying ambient air, but it mainly proposes how to utilize the tail gas of the hydrogen energy automobile to reduce pollution, and purifying air, and does not pay attention to the utilization of energy in the automobile power system.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the hydrogen internal combustion power vehicle based on high-pressure hydrogen expansion work and waste heat utilization.
In order to achieve the above object, the present invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a hydrogen internal combustion power vehicle based on expansion work and waste heat utilization of high-pressure hydrogen, which includes a high-pressure hydrogen storage system, a high-pressure hydrogen refrigeration system, a hydrogen internal combustion power generation system and a traction power system, wherein cold energy generated by the high-pressure hydrogen refrigeration system is delivered to an air conditioning refrigeration system of the vehicle for refrigeration, and tail gas heat generated by the hydrogen internal combustion power generation system is delivered to an air conditioning heating system for heating.
According to the further technical scheme, the vehicle braking system further comprises a power battery and a braking resistor, when a vehicle brakes, the hydrogen internal combustion power generation system supplies power for the power battery, the braking resistor absorbs redundant energy, and heat generated by the braking resistor is provided for an air conditioner heating system.
As a further technical scheme, the refrigerating system comprises at least one group of expansion machines and heat exchangers, the high-pressure hydrogen storage system is connected with the expansion machines, and the expansion machines are connected with the heat exchangers. The high-pressure hydrogen is expanded and decompressed when passing through the expander, and mechanical work is output to the outside. The expander is connected with a generator, and the generator converts the expansion work of the gas into electric energy and charges the power battery when needed. The heat exchanger is integrated in the air conditioning system, and cold energy generated in the process of expanding and decompressing high-pressure hydrogen is input into the refrigerating system of the vehicle air conditioner to provide cold energy for the air conditioning system of the vehicle.
As a further technical scheme, the hydrogen internal combustion power generation system comprises a hydrogen internal combustion engine and a generator; the hydrogen decompressed by the refrigerating system enters a hydrogen internal combustion engine to be combusted, chemical energy is converted into mechanical energy, and the mechanical energy is converted into electric energy by a generator; the high-temperature waste gas generated by the hydrogen-burning internal combustion engine is provided for an air conditioner heating system through a heat exchanger. The heat exchanger is integrated inside the air conditioning system.
In a second aspect, the embodiment of the invention also provides a method for controlling the refrigeration and heating of the hydrogen internal combustion power vehicle based on the expansion work of high-pressure hydrogen and the utilization of waste heat, which comprises the following steps:
in the refrigeration mode, the air conditioning system inputs cold energy from the high-pressure hydrogen refrigeration system preferentially, the blower sucks external high-temperature air into the cold-end heat exchanger, the high-temperature air exchanges heat with low-temperature hydrogen in the cold-end heat exchanger, and finally low-temperature air is output to refrigerate a carriage; if the cold provided by the high-pressure hydrogen cannot meet the refrigeration requirement, the air conditioner refrigeration system is started to provide additional cold;
in a heating mode, the air conditioning system inputs waste heat generated by the hydrogen internal combustion power generation system preferentially, the blower sucks external low-temperature air into the hot-end heat exchanger, the low-temperature air exchanges heat with the waste heat in the hot-end heat exchanger, and finally high-temperature air is output to heat a carriage; if the heat provided by the waste heat cannot meet the heating requirement, the air conditioner heater is started to provide additional heat.
The beneficial effects of the embodiment of the invention are as follows:
1. the invention applies the cold energy generated by the refrigerating system in the vehicle hydrogen power system to the air-conditioning refrigerating system of the vehicle, and applies the heat generated by the hydrogen internal combustion engine in the vehicle hydrogen power system to the air-conditioning heating system of the vehicle to fully utilize the expansion work of the internal combustion engine and the high-pressure hydrogen, thereby greatly reducing the air-conditioning energy consumption in the vehicle and improving the comprehensive energy utilization rate of the vehicle.
2. The invention also fully utilizes the heat generated by the braking resistor when the vehicle brakes, and connects the heat generated by the braking resistor with the air-conditioning heating system, thereby greatly reducing the energy consumption of the air conditioner in the vehicle and improving the comprehensive energy utilization rate of the vehicle.
3. The invention recovers the expansion work and braking energy of the high-pressure hydrogen to supplement the electric quantity for the power battery, maintains the electric quantity of the power battery in a reasonable SOC range, and is beneficial to prolonging the service life of the power battery.
4. Under the condition of fully utilizing the waste heat of an internal combustion engine and a brake resistor and the expansion work of high-pressure hydrogen, the invention is fully combined with the existing vehicle air-conditioning refrigerating system and heating system, in particular, under the air-conditioning refrigerating mode, the air-conditioning system inputs cold energy from the high-pressure hydrogen refrigerating system preferentially, the blower sucks external high-temperature air into the cold-end heat exchanger, the high-temperature air exchanges heat with low-temperature hydrogen in the cold-end heat exchanger, and finally outputs low-temperature air for refrigerating a carriage. If the cold provided by the high-pressure hydrogen cannot meet the refrigeration requirement, the air conditioner refrigeration system is started to provide additional cold. In the air-conditioning heating mode, the air-conditioning system inputs the waste heat of the internal combustion engine and the brake resistor preferentially, the blower sucks external low-temperature air into the hot-end heat exchanger, the low-temperature air exchanges heat with high-temperature waste gas or the cooling medium of the internal combustion engine/brake resistor in the hot-end heat exchanger, and finally high-temperature air is output to heat the carriage. If the heat provided by the waste heat cannot meet the heating requirement, the air conditioner heater is started to provide additional heat.
5. The power system described by the invention uses the hydrogen internal combustion engine as a power source to drive the vehicle to run, and the hydrogen internal combustion engine has the advantages of high power, long service life, good low-temperature starting performance, low fuel quality requirement and the like, and can meet the requirements of the hydrogen energy railway vehicle on high power level, long endurance and high safety.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic illustration of a vehicle hydrogen storage and power system arrangement as disclosed in the present disclosure;
FIG. 2 is a hydrogen internal combustion power system topology utilizing high pressure hydrogen refrigeration as disclosed in the present invention;
FIG. 3 is a schematic diagram of a vehicle air conditioning system refrigeration and heating system arrangement as disclosed in the present invention;
fig. 4 is a control flow chart of a cooling and heating system of a vehicle air conditioning system disclosed in the present invention.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the present invention clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
the term "high pressure" in this embodiment means that the storage pressure of hydrogen gas is 35 or 70MPa.
As described in the background art, hydrogen energy is widely focused on as a clean secondary energy source in railway vehicles, but when hydrogen is used as fuel to drive an internal combustion vehicle, a lot of redundant energy is generated, how to reasonably utilize the energy to reduce the energy consumption of the railway vehicle, and no better solution exists at present.
In an exemplary embodiment of the present invention, as shown in fig. 1 and 2, the hydrogen internal combustion power vehicle based on high-pressure hydrogen expansion work and waste heat utilization disclosed in the present embodiment includes a high-pressure hydrogen storage system, a high-pressure hydrogen refrigeration system, a hydrogen internal combustion power generation system, a traction power system, and the like; the high-pressure hydrogen storage system is arranged in a concentrated mode, and the refrigerating system, the hydrogen internal combustion power generation system, the traction power system and the like are arranged at corresponding positions of the vehicle in a scattered mode; the high-pressure hydrogen output by the high-pressure hydrogen supply system flows through the refrigerating system to be decompressed, flows into the hydrogen internal combustion power generation system to generate power, and then the hydrogen internal combustion power generation system supplies the generated power to the traction power system or other auxiliary loads. In fig. 1, only the traction power system is shown, no other auxiliary load is shown, and in fig. 1, the refrigeration system includes N, the hydrogen internal combustion engine power generation system includes N, and the traction power system includes N, where N is a natural number.
Further, the high-pressure hydrogen supply system in this embodiment may be composed of a plurality of high-pressure hydrogen storage tanks, where the plurality of high-pressure hydrogen storage tanks are used to store high-pressure hydrogen, and the high-pressure hydrogen is depressurized by a refrigeration system and then provided to a hydrogen internal combustion power generation system, as shown in fig. 2, in this process, the high-pressure hydrogen in the high-pressure hydrogen supply system flows into an expander, and is adiabatically expanded in the expander, while the hydrogen pressure is reduced, the gas temperature is reduced and acts externally, and then the low-temperature hydrogen flows into a heat exchanger to exchange heat with a heat exchange medium, and the cold energy generated in the heat exchange process is input to an air conditioning system of a vehicle to provide cold energy for the air conditioning system of the vehicle; the hydrogen internal combustion power generation system consists of a hydrogen-burning internal combustion engine (or a hydrogen engine or a hydrogen gas turbine) and a generator, is supplied by a high-pressure hydrogen supply system, depressurized hydrogen is combusted in the hydrogen-burning internal combustion engine (or the hydrogen engine or the hydrogen gas turbine), chemical energy is converted into mechanical energy, the mechanical energy is converted into electric energy by the generator to supply power for a vehicle traction system, a power battery and the like, and tail gas heat generated by the hydrogen-burning internal combustion engine (or the hydrogen engine or the hydrogen gas turbine) is supplied to an air conditioner for heating.
Further, in order to realize the control of the output hydrogen of the multi-high-pressure hydrogen storage tank, the multi-high-pressure hydrogen storage tank is provided with a combination valve, an inlet and an outlet of each combination valve are connected with respective high-pressure pipelines, each high-pressure pipeline is provided with an overflow valve, the multi-high-pressure pipelines are converged and then connected with an output pipeline, and the output pipeline is provided with a control valve and an output gas connector.
Furthermore, the refrigeration system in the embodiment can be composed of one or more groups of expansion machines and heat exchangers, so that the pressure reduction of hydrogen, external work and cold output are realized. When the hydrogen is in a group, high-pressure hydrogen in the high-pressure hydrogen supply system flows into the expander, adiabatic expansion is carried out in the expander, the gas temperature is reduced and working is carried out outwards when the hydrogen pressure is reduced, then low-temperature hydrogen flows into the heat exchanger to exchange heat with a heat exchange medium, and cold energy generated in the heat exchange process is input into an air conditioning system of a vehicle to provide cold energy for the air conditioning system of the vehicle. When the number of the hydrogen gas is multiple, the high-pressure hydrogen gas sequentially passes through each group of expansion machines and heat exchange modules, the pressure of the hydrogen gas is reduced to the pressure required by the air intake of the hydrogen internal combustion power generation system, and the cold energy and the work are output to the outside. The process of outputting cold energy and doing work by the high-pressure hydrogen is specifically as follows:
the high-pressure hydrogen firstly flows into a first-stage expander to be expanded and depressurized, acts outwards, then flows into a first-stage heat exchanger to exchange heat with a heat exchange medium, and cold energy generated in the heat exchange process is input into an air conditioning system of the vehicle; then the air flows into a secondary expansion machine to be expanded and depressurized, acts outwards, then flows into a secondary heat exchanger to exchange heat with a heat exchange medium, and the cold energy generated in the heat exchange process is input into an air conditioning system of the vehicle; then the air flows into a three-stage expander to be expanded and depressurized, performs work on the outside, then flows into a three-stage heat exchanger to exchange heat with a heat exchange medium, and the cold energy generated in the heat exchange process is input into an air conditioning system of the vehicle.
The expander may be a screw expander, a radial shaft expander, a scroll expander, a piston expander, or the like, and may be selected according to actual needs.
It should be further noted that the heat exchanger may be a plate heat exchanger, a tube heat exchanger, or the like, and is selected according to actual needs. The heat exchanger needs to be made of hydrogen embrittlement resistant materials, so that the heat exchanger is prevented from being corroded by hydrogen.
Furthermore, the expander is connected with a generator, and the output work of the expander can be converted into electric energy to charge a power battery.
Further, as shown in fig. 2, the electric energy generated by the hydrogen internal combustion power system in the embodiment provides electric energy for the traction motor through rectifying and inverting links. The traction motor receives the three-phase controllable electric energy from the inverter part of the converter, converts the electric energy into mechanical energy and provides the mechanical energy for the gearbox and the vehicle wheel set.
Further, as shown in fig. 2, the electric energy generated by the hydrogen internal combustion power system provides electric energy for auxiliary loads of the vehicle including an air conditioner through rectifying and inverting links.
In this embodiment, the hydrogen internal combustion power generation system is used to provide the energy required for traction during the constant speed driving phase of the vehicle. In the acceleration stage of the vehicle, the power battery is used for power supplement. When the vehicle brakes, the braking energy is converted into electric energy, the power battery is charged preferentially, the redundant energy is consumed by the braking resistor, and the heat of the braking resistor provides heat for the air conditioner through the heat exchange system when the vehicle brakes. The invention fully utilizes the cold energy generated by the expansion work of the high-pressure hydrogen and the waste heat of the internal combustion engine and the brake resistor to provide the needed cold energy or heat for the air conditioner so as to achieve the effect of energy conservation of the auxiliary system of the vehicle.
Further, the arrangement and principle of the refrigerating and heating system of the vehicle air conditioning system in the embodiment are shown in fig. 3, and the specific control process is shown in fig. 4, wherein the cold end heat exchanger and the hot end heat exchanger are integrated in the air conditioning system; in the refrigeration mode, the air conditioning system inputs cold energy from the high-pressure hydrogen refrigeration system preferentially, the blower sucks external high-temperature air into the cold-end heat exchanger, the high-temperature air exchanges heat with low-temperature hydrogen in the cold-end heat exchanger, and finally low-temperature air is output to refrigerate a carriage. If the cold provided by the high-pressure hydrogen cannot meet the refrigeration requirement, the air conditioner refrigeration system is started to provide additional cold. In the heating mode, the air conditioning system inputs the waste heat of the internal combustion engine and the brake resistor preferentially, the blower sucks external low-temperature air into the hot-end heat exchanger, the low-temperature air exchanges heat with high-temperature waste gas or the cooling medium of the internal combustion engine/brake resistor in the hot-end heat exchanger, and finally high-temperature air is output to heat the carriage. If the heat provided by the waste heat cannot meet the heating requirement, the air conditioner heater is started to provide additional heat.
Further, the vehicle in this embodiment may be a rail vehicle or a general car running on a highway, and the rail vehicle may be any suitable type of vehicle, such as a general speed train, a motor car, a subway vehicle, a city railway vehicle, etc., and the present invention is not limited to a specific type or types of rail vehicles.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The hydrogen internal combustion power vehicle based on high-pressure hydrogen expansion work and waste heat utilization comprises a high-pressure hydrogen storage system, a high-pressure hydrogen refrigerating system, a hydrogen internal combustion power generation system and a traction power system, and is characterized in that cold energy generated by the high-pressure hydrogen refrigerating system is conveyed to a vehicle air conditioner refrigerating system for refrigeration, and tail gas heat generated by the hydrogen internal combustion power generation system is conveyed to an air conditioner heating system for heating;
the high-pressure hydrogen expansion work and braking energy are recovered to the power battery to supplement electric quantity, and the electric quantity of the power battery is maintained in a reasonable range;
the high-pressure hydrogen refrigerating system comprises at least one group of expansion machines and heat exchangers, the high-pressure hydrogen storage system is connected with the expansion machines, the expansion machines are connected with the heat exchangers, and the heat exchangers input cold energy generated in the process of expanding and decompressing the high-pressure hydrogen to the refrigerating system of the vehicle air conditioner;
the expander is also connected with a generator, and the generator converts the expansion work of the gas into electric energy and charges the power battery when needed;
when the expansion machine and the heat exchanger comprise a plurality of groups, the expansion machines and the heat exchangers are sequentially connected in series;
the hydrogen internal combustion power generation system is used for providing the energy required by traction in the constant-speed driving stage of the vehicle; in the vehicle acceleration stage, a power battery is used for power supplement; when the vehicle brakes, the braking energy is converted into electric energy, the power battery is charged preferentially, the redundant energy is consumed by the braking resistor, and the heat of the braking resistor provides heat for the air conditioner through the heat exchange system when the vehicle brakes.
2. The hydrogen-operated power vehicle based on high-pressure hydrogen expansion work and waste heat utilization as claimed in claim 1, wherein said hydrogen-operated power generation system comprises a hydrogen-operated internal combustion engine and a generator; the exhaust gas generated by the hydrogen-burning internal combustion engine is provided for an air conditioning heating system.
3. The hydrogen-powered internal combustion engine powered vehicle based on high pressure hydrogen expansion work and waste heat utilization as claimed in claim 2, wherein the exhaust gas from the hydrogen-powered internal combustion engine is input to the hot side heat exchanger of the air conditioning and heating system.
4. The hydrogen-powered internal combustion engine powered vehicle based on high pressure hydrogen expansion work and waste heat utilization as defined in claim 1, wherein said hydrogen-powered internal combustion generating system provides electrical energy to the traction motor, air conditioning and/or other auxiliary loads of the vehicle.
5. The method for controlling the cooling and heating of a hydrogen internal combustion power vehicle based on the expansion work of high-pressure hydrogen and the utilization of waste heat as claimed in any one of claims 1 to 4, characterized by comprising the steps of:
in the refrigeration mode, the air conditioning system inputs cold energy from the high-pressure hydrogen refrigeration system preferentially, the blower sucks external high-temperature air into the cold-end heat exchanger, the high-temperature air exchanges heat with low-temperature hydrogen in the cold-end heat exchanger, and finally low-temperature air is output to refrigerate a carriage; if the cold provided by the high-pressure hydrogen cannot meet the refrigeration requirement, the air conditioner refrigeration system is started to provide additional cold
In a heating mode, the air conditioning system inputs waste heat generated by the hydrogen internal combustion power generation system preferentially, the blower sucks external low-temperature air into the hot-end heat exchanger, the low-temperature air exchanges heat with the waste heat in the hot-end heat exchanger, and finally high-temperature air is output to heat a carriage; if the heat provided by the waste heat cannot meet the heating requirement, the air conditioner heater is started to provide additional heat.
6. The method for controlling the cooling and heating of a hydrogen internal combustion engine powered vehicle based on high-pressure hydrogen expansion work and waste heat utilization as recited in claim 5, wherein the air conditioning system is further configured to preferentially input heat generated by the brake resistor in the heating mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210048133.0A CN114407950B (en) | 2022-01-17 | 2022-01-17 | Hydrogen internal combustion power vehicle and method based on high-pressure hydrogen expansion work and waste heat utilization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210048133.0A CN114407950B (en) | 2022-01-17 | 2022-01-17 | Hydrogen internal combustion power vehicle and method based on high-pressure hydrogen expansion work and waste heat utilization |
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| CN114407950A CN114407950A (en) | 2022-04-29 |
| CN114407950B true CN114407950B (en) | 2024-03-22 |
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| GB201917433D0 (en) * | 2019-11-29 | 2020-01-15 | Wyllie Nicolas James | Methods and systems for regulating the temperature in a compartment of a vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10336158B2 (en) * | 2013-12-30 | 2019-07-02 | Ford Global Technologies, Llc | Method and system for heating a vehicle |
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2022
- 2022-01-17 CN CN202210048133.0A patent/CN114407950B/en active Active
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|---|---|---|---|---|
| JP2004155295A (en) * | 2002-11-06 | 2004-06-03 | Daikin Ind Ltd | Air conditioning system for automobile |
| CN105857014A (en) * | 2016-04-23 | 2016-08-17 | 广东合即得能源科技有限公司 | Heat pump air-conditioning system of fuel cell vehicle and heating and refrigeration method |
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