Double-extended-range hybrid power system and automobile

Abstract

The embodiment of the utility model provides a double-extended-range hybrid power system and an automobile, and relates to the technical field of power systems. The dual-extended-range hybrid power system comprises a power battery, an engine extended-range module, a fuel cell extended-range module and an inverter, the engine extended-range module is connected with the power battery, the engine extended-range module is used for charging the power battery, the fuel cell extended-range module is connected with the power battery, and the inverter is connected with the power battery. The fuel cell range-extending module is used for charging the power cell, the inverter is connected with the fuel cell range-extending module, and the inverter is used for inverting current emitted by the fuel cell range-extending module into an alternating current power supply so as to be used as domestic electricity. When the engine range extending module and the fuel cell range extending module charge the power battery at the same time, emission of carbon dioxide can be reduced, zero carbon emission can be achieved under the condition that the power battery is charged only through the fuel cell range extending module, and environmental protection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power systems, and in particular to a dual-range extended-range hybrid power system and a vehicle. Background Art

[0002] Traditional RVs generally use oil-electric range extension, that is, the diesel or gasoline engine is used as a power generation unit to charge the power battery, and finally the motor is driven by electricity to make the vehicle move. After the vehicle stops, the high-voltage inverter on the vehicle converts the high-voltage DC power of the power battery into an AC 220V power supply as the living electricity of the RV. Once the SOC of the vehicle's power battery drops, the vehicle's engine starts and drives the generator to charge the power battery.

[0003] The power system in the prior art has a technical problem that a lot of carbon dioxide emissions are easily generated when the engine is working, which is not conducive to environmental protection. Utility Model Content

[0004] The utility model provides a dual-range extended hybrid power system and a car, which can alleviate the problem of easy emission of carbon dioxide when the power system is in use, and are more environmentally friendly.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The embodiment of the utility model provides a dual-range extended hybrid power system, which includes:

[0007] Power battery;

[0008] An engine range extender module, the engine range extender module is connected to the power battery, and the engine range extender module is used to charge the power battery;

[0009] A fuel cell range extender module, the fuel cell range extender module is connected to the power battery, and the fuel cell range extender module is used to charge the power battery;

[0010] An inverter is connected to the fuel cell range extender module, and is used to invert the current emitted by the fuel cell range extender module into an AC power source for use as electricity for daily life.

[0011] Optionally, the fuel cell range extender module includes a hydrogen supply module and a fuel cell module, the hydrogen supply module is connected to the fuel cell module, the fuel cell module is connected to the power battery, and the fuel cell module is connected to the inverter.

[0012] Optionally, the fuel cell module includes a fuel cell stack, a hydrogen sub-module and an air sub-module, the hydrogen sub-module is connected to the hydrogen supply module, the hydrogen sub-module and the air sub-module are both connected to the fuel cell stack, the hydrogen supply module is used to provide hydrogen to the hydrogen sub-module, the hydrogen sub-module is used and the air sub-module is used to provide hydrogen and oxygen to the fuel cell stack respectively.

[0013] Optionally, the fuel cell module also includes a power electronics module, which is connected to the fuel cell stack and the power battery, and the power electronics module is used to regulate the voltage of the electricity generated by the fuel cell stack so that its pressure and the pressure of the power battery are on the same voltage platform.

[0014] Optionally, the fuel cell module further includes a thermal management submodule, which is connected to the fuel cell stack and is used to use the heat generated by the fuel cell stack as domestic heat.

[0015] Optionally, the fuel cell range extender module further includes a control submodule, and the control submodule is connected to both the hydrogen supply module and the fuel cell module.

[0016] Optionally, the engine range extender module includes a fuel tank, an engine and a generator, the fuel tank is connected to the engine, the engine is connected to the generator, the generator is connected to the power battery, the fuel tank provides fuel to the engine, and the engine is used to drive the generator to work, so that the generator charges the power battery.

[0017] Optionally, the dual-range extended hybrid power system further includes a solar panel, which is connected to the power battery and is used to absorb solar energy to charge the power battery.

[0018] An embodiment of the utility model further provides an automobile, comprising a vehicle body and a dual-range extended-type hybrid power system, wherein the dual-range extended-type hybrid power system is arranged on the vehicle body.

[0019] Optionally, the vehicle body is provided with an external charging interface, the external charging interface is connected to the power battery, and the external charging interface is used to connect to an external power source.

[0020] The beneficial effects of the dual-range extended hybrid power system and the automobile of the embodiment of the utility model include, for example:

[0021] The dual-range extended hybrid system includes a power battery, an engine range extender module, a fuel cell range extender module and an inverter, wherein the engine range extender module is connected to the power battery, the engine range extender module is used to charge the power battery, the fuel cell range extender module is connected to the power battery, the fuel cell range extender module is used to charge the power battery, and the inverter is connected to the fuel cell range extender module, and the inverter is used to invert the current emitted by the fuel cell range extender module into an AC power supply for use as electricity for daily life. When the dual-range extended hybrid system is in use, the power battery is connected to the engine range extender module and the fuel cell range extender module at the same time, the power battery can be charged by the engine range extender module, and can also be charged by the fuel cell range extender module. When the engine range extender module and the fuel cell range extender module charge the power battery at the same time, carbon dioxide emissions can be reduced, and when the power battery is only charged by the fuel cell range extender module, zero carbon emissions can be achieved, and environmental protection can be achieved. In addition, the fuel cell range extender module can invert the emitted current into an AC power supply through the inverter, which can be used as electricity for daily life, and is more convenient to use.

[0022] The automobile includes a body and a dual-range extended hybrid power system, and the dual-range extended hybrid power system is arranged on the body. When the dual-range extended hybrid power system is in use, the power battery is connected to the engine range extender module and the fuel cell range extender module at the same time. The power battery can be charged by the engine range extender module or the fuel cell range extender module. When the engine range extender module and the fuel cell range extender module charge the power battery at the same time, carbon dioxide emissions can be reduced. When the power battery is charged only by the fuel cell range extender module, zero carbon emissions can be achieved, and environmental protection can be achieved. In addition, the fuel cell range extender module can invert the generated current into an AC power supply through an inverter to be used as electricity for daily life, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A structural diagram of a dual-range extended-range hybrid power system provided in this embodiment;

[0025] Figure 2 This is a structural diagram of the fuel cell range extender module provided in this embodiment.

[0026] Icons: 10-power battery; 20-engine range extender module; 21-fuel tank; 22-engine; 23-generator; 24-reduction gearbox; 25-motor controller; 30-fuel cell range extender module; 31-hydrogen supply module; 32-fuel cell module; 321-fuel cell stack; 322-hydrogen submodule; 323-air submodule; 324-power electronics module; 325-thermal management submodule; 33-control submodule; 40-inverter; 50-solar panel; 60-high-voltage junction box; 100-dual-range extended hybrid power system. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0031] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] Traditional RVs generally use oil-electric range extension, that is, the diesel or gasoline engine is used as a power generation unit to charge the power battery, and finally the motor is driven by electricity to make the vehicle move. After the vehicle stops, the high-voltage inverter on the vehicle converts the high-voltage DC power of the power battery into an AC 220V power supply as the living electricity of the RV. Once the vehicle power battery drops, the vehicle's engine starts and drives the generator to charge the power battery.

[0034] The power system in the prior art has a technical problem that a lot of carbon dioxide emissions are easily generated when the engine is working, which is not conducive to environmental protection.

[0035] Please refer to Figure 1-Figure 2 This embodiment provides a car, which includes a body and a dual-range extended hybrid power system 100. The dual-range extended hybrid power system 100 is arranged on the body to provide power to the body for driving. The car can effectively improve the above-mentioned technical problems, can alleviate the problem of easy emission of carbon dioxide when the power system is used, and is more environmentally friendly.

[0036] Please refer to Figure 1-Figure 2 The dual-range extended hybrid system 100 includes a power battery 10, an engine range extender module 20, a fuel cell range extender module 30 and an inverter 40. The engine range extender module 20 is connected to the power battery 10, and the engine range extender module 20 is used to charge the power battery 10. The fuel cell range extender module 30 is connected to the power battery 10, and the fuel cell range extender module 30 is used to charge the power battery 10. The inverter 40 is connected to the fuel cell range extender module 30, and the inverter 40 is used to invert the current emitted by the fuel cell range extender module 30 into an AC power supply for use as electricity for daily life.

[0037] In this embodiment, when the dual-range extended hybrid system 100 is in use, the engine range extender module 20 charges the power battery 10, thereby driving the car and adding a fuel cell range extender module 30. The fuel cell range extender module 30 charges the power battery 10, achieving zero carbon emissions and being more environmentally friendly. At the same time, the fuel cell range extender module 30 can convert the current of 220V AC power into household electricity through the inverter 40.

[0038] In this embodiment, the fuel cell range extender module 30 includes a hydrogen supply module 31 and a fuel cell module 32 , the hydrogen supply module 31 is connected to the fuel cell module 32 , the fuel cell module 32 is connected to the power battery 10 , and the fuel cell module 32 is connected to the inverter 40 .

[0039] Specifically, the hydrogen supply module 31 includes a high-pressure hydrogen bottle and a connecting pipeline. The two ends of the connecting pipeline are respectively connected to the high-pressure hydrogen bottle and the hydrogen sub-module 322. Hydrogen is stored in the high-pressure hydrogen bottle, and a bottle mouth valve is provided at the bottle mouth to control the opening and closing of the high-pressure hydrogen bottle. A sensor and a pressure reducing valve are provided on the connecting pipeline.

[0040] Furthermore, the high-pressure hydrogen cylinder is also connected to a hydrogen refueling pipe for refilling hydrogen from an external hydrogen source.

[0041] It should be noted that the fuel cell module 32 includes a fuel cell stack 321, a hydrogen sub-module 322 and an air sub-module 323. The hydrogen sub-module 322 is connected to the hydrogen supply module 31. The hydrogen sub-module 322 and the air sub-module 323 are both connected to the fuel cell stack 321. The hydrogen supply module 31 is used to provide hydrogen to the hydrogen sub-module 322. The hydrogen sub-module 322 and the air sub-module 323 are used to provide hydrogen and oxygen to the fuel cell stack 321 respectively.

[0042] Specifically, the fuel cell stack 321 is mainly composed of a plurality of single cells stacked in series, with bipolar plates and membrane electrodes alternately stacked, seals embedded between the cells, and fastened with screws after the front and rear plates are pressed, thus forming the fuel cell stack 321. When the fuel cell stack 321 is working, the hydrogen submodule 322 is used to transport hydrogen and air to the inlet of the fuel cell stack 321 respectively with the air submodule 323, which are distributed to the bipolar plates of each single cell through the main gas channel of the stack, and evenly distributed to the electrodes through the bipolar plate guide, and the electrochemical reaction is carried out through the electrode support body in contact with the catalyst to generate electricity and release heat.

[0043] Specifically, the fuel cell module 32 further includes a power electronics module 324, which is connected to the fuel cell stack 321, and the power electronics module 324 is connected to the power battery 10, and the power electronics module 324 is used to adjust the voltage of the electricity generated by the fuel cell stack 321 so that its pressure is on the same voltage platform as the pressure of the power battery 10. The voltage of the electricity generated by the fuel cell stack 321 is generally 300V DC. After the voltage is adjusted by the voltage converter of the power electronics module 324, the output high-voltage DC voltage and the voltage of the high-voltage bus of the power battery 10 are on the same voltage platform, thereby charging the power battery 10.

[0044] In addition, the fuel cell module 32 also includes a thermal management submodule 325, which is connected to the fuel cell stack 321 and is used to use the heat generated by the fuel cell stack 321 as domestic heat. The thermal management submodule 325 can transfer the heat generated by the electrochemical reaction of the fuel cell to the domestic heat of the RV through a heat exchange device for use, for example, it can be transferred to a water heater for use.

[0045] Furthermore, the fuel cell range extender module 30 further includes a control submodule 33, which is connected to both the hydrogen supply module 31 and the fuel cell module 32. The control submodule 33 can control the hydrogen supply module 31 and the fuel cell module 32 to work according to instructions and monitor the entire working process in real time.

[0046] It should also be explained that the engine range extender module 20 includes a fuel tank 21, an engine 22 and a generator 23. The fuel tank 21 is connected to the engine 22, the engine 22 is connected to the generator 23, and the generator 23 is connected to the power battery 10. The fuel tank 21 provides fuel to the engine 22, and the engine 22 is used to drive the generator 23 to work, so that the generator 23 charges the power battery 10.

[0047] Among them, the engine range extender module 20 also includes a reduction box 24 and a motor controller 25. The reduction box 24 is connected to the engine 22 and the generator 23 at the same time. The engine 22 drives the generator 23 to work through the reduction box 24. The generator 23 emits three-phase AC power. The generator 23 is connected to the motor controller 25. The motor controller 25 inverts the three-phase AC power emitted by the generator 23 into high-voltage DC power. The high-voltage DC power after inversion and the voltage of the high-voltage bus of the power battery 10 are on the same voltage platform, thereby charging the power battery 10.

[0048] Specifically, the voltage range of the high-voltage direct current after being inverted by the motor controller 25 is between 280V and 750V.

[0049] In this embodiment, the dual-range extended hybrid system 100 further includes a solar panel 50, which is connected to the power battery 10, and is used to absorb solar energy to charge the power battery 10. The dual-range extended hybrid system 100 further includes a solar power generation transformer, which is connected to both the solar panel 50 and the power battery 10. The solar panel 50 absorbs solar energy and converts it into direct current, which is then boosted by the solar transformer. The boosted voltage is on the same voltage platform as the voltage of the high-voltage busbar of the power battery 10, thereby charging the power battery 10.

[0050] In addition, the dual-range extended hybrid system 100 also includes a high-voltage paralleling box 60, which is connected to the engine range extender module 20, the fuel cell range extender module 30 and the solar power transformer at the same time. The high voltage electricity generated by the engine range extender module 20, the high voltage electricity generated by the fuel cell range extender module 30, the electricity boosted by the solar power transformer and the high voltage electricity of the power battery 10 are all transmitted through high-voltage cables and finally connected to the high-voltage paralleling box 60 through high-voltage connectors. All positive poles are connected in parallel, all negative poles are connected in parallel, and each branch is equipped with a high-voltage fuse for protection.

[0051] Furthermore, the high voltage electricity in the high voltage junction box 60 can be transmitted to the driving motor and controller of the vehicle, thereby driving the tires to move and further driving the vehicle.

[0052] In this embodiment, the high voltage electricity in the high voltage junction box 60 can also be inverted into 220V alternating current through the inverter 40, so as to supply electricity for the living use of the whole vehicle.

[0053] In this embodiment, the body of the vehicle is provided with an external charging interface, which is connected to the power battery 10, and is used to connect to an external power source. When there is an external power source, the power battery 10 can be charged using the external power source.

[0054] The power battery 10 in this embodiment is a lithium battery. When the vehicle is in use, when the SOC of the lithium battery is lower than 30%, the fuel cell range extender module 30 is started first to generate electricity and charge the lithium battery; when the hydrogen SOC is lower than 10% and the lithium battery SOC is lower than 30%, the engine range extender module 20 is started to charge the lithium battery.

[0055] In summary, the embodiment of the utility model provides a dual-range extended hybrid power system 100 and a vehicle, wherein the dual-range extended hybrid power system 100 includes a power battery 10, an engine range extender module 20, a fuel cell range extender module 30 and an inverter 40, wherein the engine range extender module 20 is connected to the power battery 10, and the engine range extender module 20 is used to charge the power battery 10, the fuel cell range extender module 30 is connected to the power battery 10, and the fuel cell range extender module 30 is used to charge the power battery 10, and the inverter 40 is connected to the fuel cell range extender module 30, and the inverter 40 is used to invert the current emitted by the fuel cell range extender module 30 into an AC power supply for use as electricity for daily life. When the dual-range extended hybrid system 100 is in use, the power battery 10 is connected to the engine range extender module 20 and the fuel cell range extender module 30 at the same time. The power battery 10 can be charged through the engine range extender module 20, and can also be charged through the fuel cell range extender module 30. When the engine range extender module 20 and the fuel cell range extender module 30 charge the power battery 10 at the same time, carbon dioxide emissions can be reduced. Moreover, when the power battery 10 is only charged by the fuel cell range extender module 30, zero carbon emissions can be achieved, thereby achieving environmental protection. In addition, the fuel cell range extender module 30 can invert the generated current into an AC power supply through the inverter 40 for use as electricity for daily life, which is more convenient to use.

[0056] The automobile includes a vehicle body and a dual-range extended hybrid power system 100, which is arranged on the vehicle body. When the dual-range extended hybrid power system 100 is in use, the power battery 10 is connected to the engine range extender module 20 and the fuel cell range extender module 30 at the same time, and the power battery 10 can be charged by the engine range extender module 20 or the fuel cell range extender module 30. When the engine range extender module 20 and the fuel cell range extender module 30 charge the power battery 10 at the same time, carbon dioxide emissions can be reduced, and when the power battery 10 is only charged by the fuel cell range extender module 30, zero carbon emissions can be achieved, and environmental protection can be achieved. In addition, the fuel cell range extender module 30 can invert the generated current into an AC power supply through an inverter 40, so as to be used as electricity for daily life, which is more convenient to use.

[0057] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A dual-range extended hybrid power system, characterized in that: include: Power battery (10); An engine range extender module (20), the engine range extender module (20) being connected to the power battery (10), and the engine range extender module (20) being used to charge the power battery (10); A fuel cell range extender module (30), the fuel cell range extender module (30) being connected to the power battery (10), and the fuel cell range extender module (30) being used to charge the power battery (10); An inverter (40) is connected to the fuel cell range extender module (30), and the inverter (40) is used to invert the current generated by the fuel cell range extender module (30) into an alternating current power source for use as electricity for daily life.

2. The dual-range extended hybrid power system according to claim 1, characterized in that: The fuel cell range extender module (30) comprises a hydrogen supply module (31) and a fuel cell module (32), wherein the hydrogen supply module (31) is connected to the fuel cell module (32), the fuel cell module (32) is connected to the power battery (10), and the fuel cell module (32) is connected to the inverter (40).

3. The dual-range extended hybrid power system according to claim 2, characterized in that: The fuel cell module (32) comprises a fuel cell stack (321), a hydrogen submodule (322) and an air submodule (323); the hydrogen submodule (322) is connected to the hydrogen supply module (31); the hydrogen submodule (322) and the air submodule (323) are both connected to the fuel cell stack (321); the hydrogen supply module (31) is used to provide hydrogen to the hydrogen submodule (322); the hydrogen submodule (322) and the air submodule (323) are used to respectively provide hydrogen and oxygen to the fuel cell stack (321).

4. The dual-range extended hybrid power system according to claim 3, characterized in that: The fuel cell module (32) further comprises a power electronics module (324), wherein the power electronics module (324) is connected to the fuel cell stack (321), and the power electronics module (324) is connected to the power battery (10), and the power electronics module (324) is used to regulate the voltage of the electricity generated by the fuel cell stack (321) so that its pressure is on the same voltage platform as the pressure of the power battery (10).

5. The dual-range extended hybrid power system according to claim 4, characterized in that: The fuel cell module (32) further comprises a thermal management submodule (325), wherein the thermal management submodule (325) is connected to the fuel cell stack (321), and the thermal management submodule (325) is used to use the heat generated by the fuel cell stack (321) as heat for domestic use.

6. The dual-range extended hybrid power system according to claim 2, characterized in that: The fuel cell range extender module (30) further comprises a control submodule (33), and the control submodule (33) is connected to both the hydrogen supply module (31) and the fuel cell module (32).

7. The dual-range extended hybrid power system according to claim 1, characterized in that: The engine range extender module (20) comprises a fuel tank (21), an engine (22) and a generator (23); the fuel tank (21) is connected to the engine (22), the engine (22) is connected to the generator (23), the generator (23) is connected to the power battery (10), the fuel tank (21) provides fuel to the engine (22), the engine (22) is used to drive the generator (23) to work, so that the generator (23) charges the power battery (10).

8. The dual-range extended hybrid power system according to claim 7, characterized in that: The dual-range extended hybrid power system (100) further comprises a solar panel (50), wherein the solar panel (50) is connected to the power battery (10), and the solar panel (50) is used to absorb solar energy to charge the power battery (10).

9. A car, characterized in that: It comprises a vehicle body and a dual-range extended-type hybrid power system as claimed in any one of claims 1 to 8, wherein the dual-range extended-type hybrid power system (100) is arranged on the vehicle body.

10. The automobile according to claim 9, characterized in that: The vehicle body is provided with an external charging interface, the external charging interface is connected to the power battery, and the external charging interface is used to connect to an external power source.

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