Motor home power supply device and travel trailer

Abstract

The utility model relates to a touring car power supply device and a pull type touring car, and belongs to the technical field of touring car power supply, the touring car power supply device comprises a storage battery, a fuel cell and a voltage conversion module, the voltage conversion module is respectively connected with the fuel cell, the storage battery and electric equipment of the touring car; first direct current is provided for electric equipment through the storage battery, the fuel cell outputs second direct current when the electric energy of the storage battery is insufficient, the voltage conversion module converts the second direct current into the first direct current, and the storage battery is charged while the electric equipment is powered through the first direct current. According to the motor home power supply device provided by the utility model, the characteristic of high efficiency of the fuel cell is utilized, so that the motor home can store more energy through a limited space, the first direct current is provided for the electric equipment on the motor home through the storage battery, and when the electric energy of the storage battery is insufficient, the fuel cell supplies power and charges the storage battery at the same time; and more electric energy is provided through a dual power supply mode of the storage battery and the fuel cell.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply for recreational vehicles, and in particular to a power supply device for recreational vehicles and a trailer-type recreational vehicle. Background Art

[0002] As people's living standards continue to improve, RVs have gradually entered people's daily lives, providing a convenient and comfortable environment for people's travel life. However, life in an RV faces many needs, such as drinking hot water, heating in winter, refrigeration in summer, food preservation or freezing, hot water showers, etc., all of which require a lot of electricity.

[0003] At present, trailer RVs generally use large-capacity batteries as energy supply devices, but batteries can only store a small amount of electrical energy, and trailer RVs are generally located outdoors, making charging inconvenient, which can lead to a shortage of electricity.

[0004] Therefore, it is urgent to provide a power supply device for a trailer RV that can provide sufficient electric energy. Utility Model Content

[0005] In view of this, it is necessary to provide a motorhome power supply device and a trailer motorhome to solve the technical problem of power shortage in existing trailer motorhomes.

[0006] In order to solve the above problems, the utility model provides a motorhome power supply device, including a battery, a fuel cell and a voltage conversion module;

[0007] The voltage conversion module is respectively connected to the fuel cell, the storage battery and the electrical equipment of the RV;

[0008] The battery provides the electrical device with a first direct current, the fuel cell outputs a second direct current when the battery is short of power, the voltage conversion module converts the second direct current into the first direct current, and the first direct current is used to power the electrical device while charging the battery.

[0009] In a possible implementation, the voltage conversion module includes a voltage step-down unit and a voltage stabilization unit;

[0010] The input end of the voltage stabilizing unit is connected to the output end of the fuel cell, the output end of the voltage stabilizing unit is connected to the input end of the voltage reducing unit, and the output end of the voltage reducing unit is connected to the storage battery and the electrical equipment;

[0011] The voltage stabilizing unit is used to convert the second direct current into a stable high-voltage direct current;

[0012] The step-down unit is used to step down the high-voltage direct current to obtain the first direct current and output the first direct current to the battery and the electrical equipment.

[0013] In a possible implementation, it also includes a high-current mechanical switch, an indoor power switch, an electromagnetic contactor, a first fuse, a second fuse, and a third fuse;

[0014] The first end of the high-current mechanical switch is connected to the battery, the second end of the high-current mechanical switch is connected to the output end of the step-down unit, the first end of the third fuse, the first end of the first fuse and the third end of the electromagnetic contactor, the second end of the first fuse is connected to the first end of the indoor power switch, the second end of the indoor power switch is connected to the first end of the electromagnetic contactor, the second end of the electromagnetic contactor is grounded, the fourth end of the electromagnetic contactor is connected to the first end of the second fuse, the second end of the second fuse is connected to the non-critical electrical equipment of the electrical equipment, and the second end of the third fuse is connected to the common electrical equipment of the electrical equipment.

[0015] In a possible implementation manner, a fourth fuse is provided between the output end of the voltage reduction unit and the second end of the high-current mechanical switch.

[0016] In a possible implementation manner, a fifth fuse is further provided between the input end of the voltage reduction unit and the output end of the voltage stabilizing unit.

[0017] In a possible implementation, an inverter is also included;

[0018] The DC end of the inverter is connected to the battery and the voltage conversion module through a sixth fuse, and the AC output end of the inverter is connected to the AC device of the power-consuming device;

[0019] The inverter is used to convert the first direct current output by the battery or the voltage conversion module into alternating current and output the alternating current to the alternating current device.

[0020] In a possible implementation manner, a first air switch is provided between the inverter and the AC device.

[0021] In a possible implementation, it also includes a mains aviation socket;

[0022] The AC power aviation socket is connected to the AC input terminal of the inverter, and is used to introduce the external AC power into the inverter, and power the AC device through the external AC power;

[0023] The inverter is also used to convert the external AC power into the first DC power.

[0024] In a possible implementation, a second air switch is further provided between the AC power aviation socket and the inverter.

[0025] The utility model also provides a trailer-type RV, comprising the RV power supply device mentioned above.

[0026] The beneficial effects of the utility model are as follows: the RV power supply device provided by the utility model includes a battery, a fuel cell and a voltage conversion module. By utilizing the high efficiency of the fuel cell, the RV can store more energy in a limited space. Under normal circumstances, the battery provides a first direct current for the electrical equipment on the RV. When the battery is insufficient, the fuel cell provides a second direct current, which is converted into the first direct current by the voltage conversion module. The first direct current is used to power the electrical equipment and charge the battery at the same time. The dual power supply method of the battery and the fuel cell can provide more electrical energy for the RV. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of an embodiment of a power supply device for a motorhome provided by the utility model. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] The embodiment of the utility model provides a power supply device for a motorhome; Figure 1 A schematic diagram of the structure of an embodiment of a power supply device for a motorhome provided by the utility model; Figure 1 As shown, the RV power supply device includes a battery 10, a fuel cell 20 and a voltage conversion module 30;

[0033] The voltage conversion module 30 is respectively connected to the fuel cell 20, the battery 10 and the electrical equipment of the RV;

[0034] The battery 10 provides the electrical equipment with a first direct current, and the fuel cell 20 outputs a second direct current when the power of the battery 10 is insufficient. The voltage conversion module 30 converts the second direct current into the first direct current, and the first direct current is used to power the electrical equipment while charging the battery 10.

[0035] It should be noted that in the embodiment of the utility model, since the electrical equipment of the RV are all electrical equipment with a rated voltage of 12V, it is necessary to use 12V direct current (i.e., the first direct current) for power supply. The fuel cell 20 is equivalent to a generator. When the battery 10 is insufficient, the fuel cell 20 can be turned on to reform hydrogen through methanol aqueous solution to obtain the required hydrogen fuel, and then generate electrical energy through a series of chemical reactions. In the specific implementation, since the fuel cell 20 outputs unstable 48V-60V direct current (i.e., the second direct current), it is necessary to convert the unstable direct current into stable 12V direct current through the voltage conversion module 30, and use the 12V direct current to charge the battery 10 and continue to power the electrical equipment on the RV, so as to avoid power outages in the RV due to insufficient power of the battery 10.

[0036] Compared with the prior art, the RV power supply device provided by the utility model includes a battery 10, a fuel cell 20 and a voltage conversion module 30. By utilizing the high efficiency of the fuel cell 20, the RV can store more energy in a limited space. Under normal circumstances, the battery 10 provides the first direct current for the electrical equipment on the RV. When the power of the battery 10 is insufficient, the fuel cell 20 provides the second direct current, and the second direct current is converted into the first direct current by the voltage conversion module 30. The first direct current is used to power the electrical equipment and charge the battery 10 at the same time. The dual power supply mode of the battery 10 and the fuel cell 20 can provide more electrical energy for the RV.

[0037] In some embodiments of the present invention, the voltage conversion module 30 includes a voltage reduction unit 310 and a voltage stabilization unit 320;

[0038] The input end of the voltage stabilizing unit 320 is connected to the output end of the fuel cell 20, the output end of the voltage stabilizing unit 320 is connected to the input end of the voltage reducing unit 310, and the output end of the voltage reducing unit 310 is connected to the storage battery 10 and the electrical equipment;

[0039] The voltage stabilizing unit 320 is used to convert the second direct current into a stable high-voltage direct current;

[0040] The step-down unit 310 is used to step down the high-voltage direct current to obtain the first direct current and output the first direct current to the storage battery 10 and the electrical equipment.

[0041] It can be understood that in the embodiment of the utility model, since the power of the fuel cell 20 is 3KW, the corresponding voltage stabilizing unit 320 and the voltage step-down unit 310 are both implemented using 3KW voltage stabilizing equipment and voltage step-down equipment. The unstable voltage output by the fuel cell 20 is first converted into a stable direct current of 48V by the voltage stabilizing equipment and then output to the voltage step-down unit 310. The voltage step-down unit 310 then reduces the 48V direct current to 12V direct current for use by the electrical equipment of the RV, and at the same time uses the 12V direct current to charge the battery 10.

[0042] In some embodiments of the present utility model, it also includes a high-current mechanical switch K2, an indoor power switch K1, an electromagnetic contactor Q1, a first fuse MF1, a second fuse MF2 and a third fuse MF3;

[0043] A first end of the high-current mechanical switch K2 is connected to the battery 10, a second end of the high-current mechanical switch K2 is connected to the output end of the step-down unit 310, a first end of the third fuse MF3, a first end of the first fuse MF1 and a third end of the electromagnetic contactor Q1, a second end of the first fuse MF1 is connected to a first end of the indoor power switch K1, a second end of the indoor power switch K1 is connected to a first end of the electromagnetic contactor Q1, a second end of the electromagnetic contactor Q1 is grounded, a fourth end of the electromagnetic contactor Q1 is connected to a first end of the second fuse MF2, a second end of the second fuse MF2 is connected to an emergency electrical equipment 40 of the electrical equipment, and a second end of the third fuse MF3 is connected to a normal electrical equipment 50 of the electrical equipment.

[0044] It can be understood that in the embodiment of the utility model, since some electrical equipment on the RV needs to be powered all the time (i.e., the commonly used electrical equipment 50), such as signal lights, parking motors, ball head lifting systems, etc., and some electrical equipment is powered only when needed (i.e., the non-common electrical equipment 40), such as indoor electrical appliances, indoor lighting, indoor audio, water heaters, etc., the present embodiment divides the electric energy provided by the battery 10 or the above-mentioned fuel cell 20 into two paths, one path is directly output to the commonly used electrical equipment 50 through the third fuse MF3, and the other path is transmitted to the non-common electrical equipment 40 through the electromagnetic contactor Q1 and the second fuse MF2. The electromagnetic contactor Q1 is controlled by the indoor power switch K1. When the emergency power-consuming equipment 40 needs power supply, the electromagnetic contactor Q1 is controlled to close through the indoor power switch K1 to transmit power. Otherwise, the electromagnetic contactor Q1 is disconnected, and the emergency power-consuming equipment 40 has no power input. A first fuse MF1 is also provided on the circuit of the indoor power switch K1 to protect the indoor power switch K1 from overcurrent and overvoltage. The power supply of the battery 10 is controlled by a large current mechanical switch K2, which is equivalent to the main switch on the RV, and the power supply of the fuel cell 20 is controlled by the fuel cell 20 itself, that is, the fuel cell 20 supplies power when it is turned on, and no power is output when it is not turned on.

[0045] In some embodiments of the present invention, a fourth fuse MF4 is provided between the output end of the step-down unit 310 and the second end of the high-current mechanical switch, and a fifth fuse MF5 is provided between the input end of the step-down unit 310 and the output end of the voltage stabilizing unit 320 .

[0046] It can be understood that in the embodiment of the utility model, the fourth fuse MF4 and the fifth fuse MF5 both play the role of overcurrent fuse. When a module in the step-down unit 310, the voltage stabilizing unit 320 or the fuel cell 20 fails, the circuit is cut off in time to protect other components, thereby avoiding damage to the entire RV power supply device due to the failure of one component.

[0047] In some embodiments of the present invention, an inverter 60 is also included;

[0048] The DC end of the inverter 60 is connected to the battery 10 and the voltage conversion module 30 through the sixth fuse MF6, and the AC output end of the inverter 60 is connected to the AC device 70 of the power-consuming device;

[0049] The inverter 60 is used to convert the first direct current outputted by the battery 10 or the voltage conversion module 30 into alternating current and output the alternating current to the alternating current device 70 .

[0050] It is understandable that in the embodiment of the utility model, the electrical equipment on the RV also includes AC equipment, so the inverter 60 is provided to convert the 12V first DC power into 220V AC power to power the AC equipment 70.

[0051] In some embodiments of the present invention, a first air switch A1 is provided between the inverter 60 and the AC device 70 .

[0052] It is understandable that, in the implementation of the present utility model, the inverter 60 is protected by the first air switch A1 to prevent too many AC devices 70 on the RV from causing the current to exceed the limit and burn out the inverter 60 .

[0053] In some embodiments of the present utility model, it also includes a mains aviation socket R1;

[0054] The AC power aviation socket R1 is connected to the AC input terminal of the inverter 60, and is used to introduce the external AC power into the inverter 60, and supply power to the AC device 70 through the external AC power;

[0055] The inverter 60 is also used to convert the external AC power into the first DC power.

[0056] It can be understood that in the embodiment of the utility model, the RV can be connected to the external AC power through the AC aviation socket R1. When the RV can be powered by the external AC power, the fuel cell 20 is automatically shut down, and the inverter 60 converts the external 220V AC AC power into 12V DC power to power the electrical equipment of the RV. If the battery 10 is not fully charged, the battery 10 is charged by the 12V DC power at the same time, and the AC equipment 70 of the RV does not need to be converted by the inverter 60, and is directly powered by the 220V AC AC power.

[0057] In some embodiments of the present invention, a second air switch A2 is further provided between the AC power aviation socket and the inverter 60 .

[0058] It is understandable that, in the embodiment of the present utility model, a second air switch A2 is provided between the external AC power and the inverter 60 for overcurrent protection.

[0059] The utility model also provides a trailer RV, which includes the above-mentioned RV power supply device. The specific embodiment of the trailer RV refers to the embodiment of the above-mentioned RV power supply device, which will not be described in detail here.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A motorhome power supply device, characterized in that: Including batteries, fuel cells and voltage conversion modules; The voltage conversion module is respectively connected to the fuel cell, the storage battery and the electrical equipment of the RV; The battery provides the electrical device with a first direct current, the fuel cell outputs a second direct current when the battery is short of power, the voltage conversion module converts the second direct current into the first direct current, and the first direct current is used to power the electrical device while charging the battery.

2. The RV power supply device according to claim 1, characterized in that: The voltage conversion module includes a voltage step-down unit and a voltage stabilization unit; The input end of the voltage stabilizing unit is connected to the output end of the fuel cell, the output end of the voltage stabilizing unit is connected to the input end of the voltage reducing unit, and the output end of the voltage reducing unit is connected to the storage battery and the electrical equipment; The voltage stabilizing unit is used to convert the second direct current into a stable high-voltage direct current; The step-down unit is used to step down the high-voltage direct current to obtain the first direct current and output the first direct current to the battery and the electrical equipment.

3. The RV power supply device according to claim 2, characterized in that: It also includes a high-current mechanical switch, an indoor power switch, an electromagnetic contactor, a first fuse, a second fuse and a third fuse; The first end of the high-current mechanical switch is connected to the battery, the second end of the high-current mechanical switch is connected to the output end of the step-down unit, the first end of the third fuse, the first end of the first fuse and the third end of the electromagnetic contactor, the second end of the first fuse is connected to the first end of the indoor power switch, the second end of the indoor power switch is connected to the first end of the electromagnetic contactor, the second end of the electromagnetic contactor is grounded, the fourth end of the electromagnetic contactor is connected to the first end of the second fuse, the second end of the second fuse is connected to the non-critical electrical equipment of the electrical equipment, and the second end of the third fuse is connected to the common electrical equipment of the electrical equipment.

4. The RV power supply device according to claim 3, characterized in that: A fourth fuse is arranged between the output end of the step-down unit and the second end of the high-current mechanical switch.

5. The RV power supply device according to claim 2, characterized in that: A fifth fuse is further arranged between the input end of the voltage-reducing unit and the output end of the voltage-stabilizing unit.

6. The RV power supply device according to claim 1, characterized in that: Also includes inverter; The DC end of the inverter is connected to the battery and the voltage conversion module through a sixth fuse, and the AC output end of the inverter is connected to the AC device of the power-consuming device; The inverter is used to convert the first direct current output by the battery or the voltage conversion module into alternating current and output the alternating current to the alternating current device.

7. The RV power supply device according to claim 6, characterized in that: A first air switch is provided between the inverter and the AC device.

8. The RV power supply device according to claim 6, characterized in that: It also includes a mains aviation socket; The AC power aviation socket is connected to the AC input terminal of the inverter, and is used to introduce the external AC power into the inverter, and power the AC device through the external AC power; The inverter is also used to convert the external AC power into the first DC power.

9. The RV power supply device according to claim 8, characterized in that: A second air switch is also provided between the AC power aviation socket and the inverter.

10. A trailer RV, characterized in that: The trailer RV includes the RV power supply device as described in any one of claims 1-9.

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