Power supply control system for a motor coach

Abstract

The application provides a power supply control system for a power camping bus, which separates driving electric equipment and camping electric equipment through a first battery and a second battery, sets a first electromagnetic switch between a first power distribution unit and a second power distribution unit, sets a second electromagnetic switch between a vehicle air conditioner and the first power distribution unit, controls the on-off of the first electromagnetic switch and the second electromagnetic switch through the rotating speed of a vehicle engine, so that the vehicle air conditioner cannot be started when the vehicle is in a camping state, and thus even if the first mechanical switch is in a closed state, the vehicle will not be caused to start the battery to be short of power due to the use of the air conditioner which is a high-power electric appliance, and during driving, the first battery can supply power to the camping part of the electric equipment through the first power distribution unit.

Description

Technical Field

[0001] This invention belongs to the field of vehicle power control technology, and particularly relates to a power control system for a motorized camping bus. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In recent years, with the revival of the tourism market and the travel needs of special groups, the market demand for conventionally powered buses, such as those powered by fuel or natural gas, to meet passenger transport and camping functions has been increasing. Since the driving power source of conventionally powered buses is the engine, the design of the vehicle power control system must meet multiple functional requirements, such as ensuring the safety of electricity use during long-distance travel, meeting the power needs during camping, and ensuring the power supply for vehicle restarting after camping. The overall power control of the vehicle is complex, and problems such as mixed power supply, insufficient power supply during camping, difficulty in starting the vehicle after camping, and even battery depletion leading to vehicle breakdown are likely to occur. This results in a poor passenger experience and safety hazards during vehicle operation. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a power control system for a camping bus, which isolates the vehicle's electrical equipment from the camping equipment through a first battery and a second battery, and controls the on / off state of the first and second electromagnetic switches by the speed of the vehicle's engine, thus avoiding the problem of the first battery being depleted due to the use of the vehicle's air conditioning during camping.

[0005] To achieve the above objectives, the first aspect of the present invention provides a power control system for a motorized camping bus, characterized in that it includes: a first battery, a second battery, a first power distribution unit, a second power distribution unit, a first electromagnetic switch, and a second electromagnetic switch;

[0006] The first battery is electrically connected to the first power distribution unit through a first mechanical switch. The first battery is used to supply power to the vehicle's electrical equipment through the first power distribution unit when the vehicle is not in a camping state.

[0007] The second battery is electrically connected to the second power distribution unit via a second mechanical switch. The second battery is used to supply power to camping equipment through the second power distribution unit when the vehicle is in a camping state.

[0008] The first power distribution unit and the second power distribution unit are electrically connected through the first electromagnetic switch, and the vehicle air conditioner is electrically connected to the first power distribution unit through the second electromagnetic switch; the on / off state of the first electromagnetic switch and the second electromagnetic switch is determined according to the vehicle engine speed and the value of a set threshold.

[0009] The above one or more technical solutions have the following beneficial effects:

[0010] In this invention, the vehicle's electrical equipment and camping equipment are isolated by a first battery and a second battery. The first battery provides power to the vehicle's electrical equipment when the vehicle is in motion, while the second battery provides power to the camping equipment when the vehicle is camping. A first electromagnetic switch is installed between the first power distribution unit and the second power distribution unit, and a second electromagnetic switch is installed between the vehicle's air conditioner and the first power distribution unit. The on / off state of the first and second electromagnetic switches is controlled by the vehicle's engine speed, so that the vehicle's air conditioner cannot be started when the vehicle is camping. This ensures that even if the first mechanical switch is closed, the vehicle will not deplete the starting battery due to the use of a high-power electrical appliance such as the air conditioner. Furthermore, during driving, the first battery can supply power to some of the camping equipment through the first power distribution unit via the first electromagnetic switch.

[0011] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0013] Figure 1 This is a schematic diagram of the power control system for the camping bus in Embodiment 1 of the present invention. Detailed Implementation

[0014] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, 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 pertains.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations of the present invention.

[0016] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0017] Example 1

[0018] This embodiment discloses a power control system for a motorized camping bus, including: a first battery, a second battery, a first power distribution unit, a second power distribution unit, a first electromagnetic switch, and a second electromagnetic switch;

[0019] The first battery is electrically connected to the first power distribution unit through a first mechanical switch. The first battery is used to supply power to the vehicle's electrical equipment through the first power distribution unit when the vehicle is not in a camping state.

[0020] The second battery is electrically connected to the second power distribution unit via a second mechanical switch. The second battery is used to supply power to camping equipment through the second power distribution unit when the vehicle is in a camping state.

[0021] The first power distribution unit and the second power distribution unit are electrically connected through the first electromagnetic switch, and the vehicle air conditioner is electrically connected to the first power distribution unit through the second electromagnetic switch; the on / off state of the first electromagnetic switch and the second electromagnetic switch is determined according to the vehicle engine speed and the value of a set threshold.

[0022] The power control system of the conventional power camping bus in this embodiment mainly consists of a first battery (driving battery), a second battery (housing battery), a first power distribution unit, a second power distribution unit, a mains power distribution box, a first mechanical switch, a second mechanical switch, a third mechanical switch, a first electromagnetic switch, a second electromagnetic switch, and an air switch power conversion device.

[0023] Specifically, the control system has two energy storage devices: a vehicle battery and a utility battery. The vehicle battery is used to start the vehicle and provide power to the vehicle's electrical equipment while the vehicle is in motion. The utility battery is used to provide power to electrical equipment when the vehicle is camping.

[0024] The first mechanical switch is located between the vehicle battery and the first power distribution unit, and is used to disconnect the power connection between the vehicle battery and the vehicle's electrical equipment; the second mechanical switch is located between the living battery and the second power distribution unit, and is used to disconnect the power connection between the living battery and the camping electrical equipment; the third mechanical switch is located between the camping-specific equipment and the second power distribution unit.

[0025] The first electromagnetic switch is located between the first power distribution unit and the second power distribution unit. The first electromagnetic switch is controlled to open and close according to the control signal, so that the vehicle electrical equipment connected to the first power distribution power supply at the rear end of the first electromagnetic switch can conditionally realize the power connection and disconnection.

[0026] The second electromagnetic switch is located between the first power distribution unit and the vehicle air conditioner. The second electromagnetic switch is turned on and off according to the control signal, so that the vehicle air conditioner can conditionally turn on and off the power.

[0027] The first power distribution unit and the second power distribution unit are designed to distribute power reasonably, and each power supply circuit is equipped with a fuse to protect the electrical equipment and lines.

[0028] It is understandable that the power distribution unit can adopt the existing structure, with the internal circuits of the power distribution unit connected in parallel and each power supply branch equipped with the necessary fuses for protection.

[0029] The function of the mains power distribution box and air switch is to connect to the mains power or the output port of the AC generator to distribute the mains power and control safety.

[0030] The function of the power conversion equipment is to enable mutual conversion between AC mains power and the vehicle's 24V low-voltage power supply, ensuring flexible use of the vehicle's power supply.

[0031] The principle of the power control system proposed in this embodiment is as follows: When the camping bus is in operation, the vehicle is in a non-camping state. At this time, the second mechanical switch is open and the first mechanical switch is closed, allowing the vehicle's battery to supply power to all the vehicle's electrical equipment. The power enters the first power distribution unit through the first mechanical switch. The first power distribution unit is connected to all the vehicle's electrical equipment, such as the vehicle starter, cooling system ATS, vehicle retarder, and vehicle air conditioning. After receiving power, the vehicle's electrical equipment will enter the working state once the working conditions are met. During operation, the vehicle engine starts and drives the first and second generators to generate electricity via belt drive. The power generated by the first generator replenishes the battery through the first power distribution unit and the first mechanical switch, ensuring that the battery does not run out of power.

[0032] When the camping bus is in camping mode, the vehicle is stationary, the engine is off, the first mechanical switch is open, and the living battery supplies power to all camping electrical equipment on the vehicle. The second mechanical switch is closed, and the power enters the second power distribution unit through the second mechanical switch. The second power distribution unit is connected to all camping electrical equipment on the vehicle, including camping-specific equipment and other camping loads, such as external camping lights, camping adventure mechanisms, and internal heating and ventilation equipment.

[0033] If there is a problem with the power control when switching between driving and camping, it may lead to excessive use of the driving battery power when camping or excessive use of the household battery power when driving. Since the two cannot be isolated, the household battery or starter battery will be depleted. When starting the car, the vehicle will not be able to start because the driving battery is dead, resulting in the vehicle breaking down.

[0034] This embodiment of the power control system proposes a method to solve the problem of power battery depletion. In this power control system, two electromagnetic switches, namely a first electromagnetic switch and a second electromagnetic switch, are set. The on / off state of the first and second electromagnetic switches is controlled by the engine speed during vehicle operation. After the engine starts, when the engine speed is greater than a set threshold, the first and second electromagnetic switches are in the on state; when the engine speed is less than the set threshold, the first and second electromagnetic switches are in the off state. When the bus is camping, the engine is turned off, the first electromagnetic switch is turned off, and the camping battery power is disconnected from the vehicle load. The vehicle load cannot use the camping battery power. At the same time, the second electromagnetic switch is turned off, ensuring that the vehicle air conditioner is disconnected from power and stops working after the engine is turned off. The vehicle cannot start the air conditioner when the engine is off. Thus, even if the first mechanical switch is in the closed state, the vehicle will not suffer from power battery depletion due to the use of high-power electrical appliances such as air conditioning.

[0035] When the vehicle is in motion, the engine starts, and the first and second electromagnetic switches are closed, allowing the vehicle's air conditioning to function normally. After the engine starts, the first and second generators begin generating electricity. The first generator connects to the first and second power distribution units, while the second generator connects to the utility battery. This isolates and recharges the utility battery during vehicle operation. Before driving, the second and third mechanical switches are disconnected, isolating the camping loads that could affect driving safety from the vehicle via the third mechanical switch, thus preventing accidents. Even when the second mechanical switch is open, some camping equipment can still share the vehicle's battery power through the second electromagnetic switch, allowing the use of some camping equipment while the vehicle is in motion.

[0036] When the engine starts, it drives the first and second generators to rotate via belt drive, and both generators can generate electricity.

[0037] In this embodiment, the power control system incorporates a power conversion device, a mains power distribution box, and a mains / generator selection switch. When the vehicle is camping, it can connect to mains power externally or use an onboard alternator to generate electricity and then connect it to the AC distribution box. The mains / generator selection switch adjusts the power input source, thus preventing the power generated by the alternator from returning to the mains power grid through the onboard mains distribution box, ensuring electrical safety. The mains distribution box is equipped with an air switch, connecting to mains-powered equipment used during camping, such as kettles, induction cookers, and audio-visual equipment, providing both safety and convenience. The power conversion device connects to the battery on one end and the mains distribution box on the other. When the camping bus connects to mains power, the power conversion device converts the mains power into a low-voltage power supply with the same voltage platform as the battery, replenishing the battery and supplying power to low-voltage equipment used during camping. When a bus is camping and there is no connection to the mains power due to force majeure, the power conversion equipment can convert the power from the household battery to the mains power, so that the equipment can still be used even when there is no connection to the mains power, which is both convenient and quick.

[0038] By applying the power control system of this conventional-powered camping bus, power isolation and coupling connections are achieved between the driving and camping modes of vehicle use, ensuring that the driving battery does not run out of power and that the living batteries are replenished in a timely manner. Simultaneously, by incorporating an AC distribution box and using power conversion equipment and related circuit breakers, electrical safety accidents are prevented, ensuring a safe and continuous power supply for camping operations.

[0039] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A power control system for a motorized camping bus, characterized in that, include: First battery, second battery, first power distribution unit, second power distribution unit, first electromagnetic switch and second electromagnetic switch; The first battery is electrically connected to the first power distribution unit through a first mechanical switch. The first battery is used to supply power to the vehicle's electrical equipment through the first power distribution unit when the vehicle is not in a camping state. The second battery is electrically connected to the second power distribution unit via a second mechanical switch. The second battery is used to supply power to camping equipment through the second power distribution unit when the vehicle is in a camping state. The first power distribution unit and the second power distribution unit are electrically connected through the first electromagnetic switch, and the vehicle air conditioner is electrically connected to the first power distribution unit through the second electromagnetic switch; the on / off state of the first electromagnetic switch and the second electromagnetic switch is determined according to the speed of the vehicle engine and the size of the set threshold. It also includes a first generator, the power output of which charges the first battery through a first power distribution unit and the first mechanical switch; If the engine speed is greater than the set threshold, the first electromagnetic switch and the second electromagnetic switch are in the on state; if the engine speed is less than the set threshold, the first electromagnetic switch and the second electromagnetic switch are in the off state. When the vehicle is not in a camping state, the first electromagnetic switch and the second electromagnetic switch are in the on state, the second mechanical switch is in the off state, and the output power of the first generator supplies power to the first power distribution unit and the second power distribution unit. It also includes a mains power distribution box and a power conversion device. The mains power distribution box supplies power to the second power distribution unit and the second battery through the power conversion device. Alternatively, the second battery supplies power to the mains camping equipment electrically connected to the mains power distribution box through the second power distribution unit and the power conversion device. When connected to mains power, the power conversion device converts the mains power into a low-voltage power supply with the same voltage as the second battery, supplying power to the second battery and camping equipment; if not connected to mains power, the power conversion device converts the power output from the second battery into mains power, supplying power to the mains-powered camping equipment.

2. The power control system for a motorized camping bus as described in claim 1, characterized in that, It also includes a second generator, whose output power supplies the second battery.

3. The power control system for a motorized camping bus as described in claim 1, characterized in that, The vehicle electrical equipment includes an ATS cooling system, a vehicle retarder, and a vehicle air conditioner; the camping electrical equipment includes camping-specific equipment and other camping loads.

4. The power control system for a motorized camping bus as described in claim 1, characterized in that, The mains power distribution box is electrically connected to an AC generator or mains power supply via an air switch.

5. The power control system for a motorized camping bus as described in claim 3, characterized in that, A third mechanical switch is provided between the camping equipment and the second power distribution unit.

Images