A 48V life power system for a recreational vehicle
Patent Information
- Application Number
- CN202522225542.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-21
AI Technical Summary
[0005]为了弥补以上不足，本实用新型提供了一种房车48V生活用电系统，旨在改善现有技术中充电方式单一、充电效率低影响出行的问题
1、本实用新型中，通过在房车上设置交流、直流充电技术，提升房车的充电速度，让48V电池包可以在2小时内充满电池，能够充分利用现有的公共资源，使用时方便灵活，能够减少房车使用时停车充电的时间，可以提升房车出行时生活用电的续航。
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Figure CN224714957U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of RV electrical system technology, and in particular to a 48V living power system for RVs. Background Technology
[0002] A motorhome consists of main equipment and aftermarket equipment. The main equipment is the basic equipment that enables driving, and generally includes an engine, chassis, cab, and electrical equipment. Aftermarket equipment is the equipment that enables living functions, and generally includes a kitchen, bathroom, bedroom, and electrical equipment. The area where aftermarket equipment is installed is generally called the aftermarket area.
[0003] During the design process, the rear-mounted area of a motorhome is equipped with numerous electrical devices and energy storage units, such as lead-acid or lithium batteries. These energy storage units can use AC mains power to charge the battery pack via an onboard charger, using the stored electricity to provide power to the motorhome and ensure its electrical circuits remain operational.
[0004] However, existing energy storage devices can only be charged using municipal AC power, which is slow, inefficient, and time-consuming, making it inconvenient for travel. With the widespread use of new energy charging stations in various places, it is impossible to use these stations for charging, thus failing to fully utilize existing public resources. Therefore, a 48V living power system for RVs is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a 48V living power system for RVs, aiming to improve the problems of limited charging methods and low charging efficiency in the existing technology, which affect travel.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A 48V living power system for RVs includes a 48V generator, a two-in-one unit, a 48V battery pack, an external power supply, a DC charging port, an AC charging port, a charging and inverter integrated unit, a protocol gateway module, a touch screen, a solar panel, and a solar controller. The 48V generator is electrically connected to the two-in-one unit, the two-in-one unit is electrically connected to the 48V battery pack, the protocol gateway module is electrically connected to the 48V battery pack, and the two-in-one unit is electrically connected to the protocol gateway module. The 48V generator, controlled by the two-in-one unit and the protocol gateway module, charges the 48V battery pack while the vehicle is in motion, with a maximum charging power of 3.2kW. The external power supply includes a DC charging pile, an AC charging pile, and a mains power outlet. As a further description of the above technical solution: The DC charging port is electrically connected to the integrated charging and reversing machine, the integrated charging and reversing machine is electrically connected to the 48V battery pack, the protocol gateway module is electrically connected to the integrated charging and reversing machine, and the DC charging pile is connected through the DC charging port. The 48V battery pack is DC fast charged through the integrated charging and reversing machine and controlled by the protocol gateway module, with a maximum charging power of up to 5kW. As a further description of the above technical solution: The AC charging port is electrically connected to the integrated charging and reversing machine. The AC charging pile is connected through the AC charging port and controlled by the integrated charging and reversing machine and the protocol gateway module to perform AC charging on the 48V battery pack. The maximum charging power can reach 3.6kW. As a further description of the above technical solution: The mains power outlet is connected to the AC charging port via a national standard charging gun. The charging and reverse charging integrated machine is controlled by the protocol gateway module to charge the 48V battery pack, with a maximum charging power of 2.2kW. As a further description of the above technical solution: The 48V DC power output from the 48V battery pack is stepped down and converted to 12V DC power by the two-in-one machine to supply 12V low-voltage equipment in the vehicle. The touch screen is electrically connected to the protocol gateway module. As a further description of the above technical solution: The 48V DC power output from the 48V battery pack is converted into 220V AC power by the integrated charging and reversing machine, and then electrically connected to everyday electrical appliances through the protocol gateway module. As a further description of the above technical solution: The solar panel is installed on the top of the RV. The solar panel is electrically connected to the solar controller. The solar controller is electrically connected to the charging and reversing unit. The solar controller charges the 48V battery pack through the charging and reversing unit and the protocol gateway module.
[0007] This utility model has the following beneficial effects: 1. In this utility model, by setting AC and DC charging technology on the RV, the charging speed of the RV is improved, and the 48V battery pack can be fully charged in 2 hours. It can make full use of existing public resources, is convenient and flexible to use, reduces the time spent parking and charging when using the RV, and can improve the power supply range for daily life when the RV is on the go.
[0008] 2. In this utility model, a 48V generator is installed inside the RV, and the shaft of the 48V generator is connected to the internal structure of the RV. During the RV's operation, the 48V generator generates electricity, which is then charged through the dual-integrated unit and protocol gateway module. At the same time, a solar charging module is installed on the roof, allowing the RV to charge the 48V battery pack while in the wild and while driving, saving time. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of a 48V living power system for a motorhome proposed in this utility model.
[0010] Legend: 1. 48V generator; 2. Two-in-one unit; 3. 48V battery pack; 4. External power supply; 401. DC charging pile; 402. AC charging pile; 403. Mains power socket; 5. DC charging port; 6. AC charging port; 7. Integrated charging and reverse charging unit; 8. Protocol gateway module; 9. Touch screen; 10. Solar panel; 11. Solar controller. Detailed Implementation
[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0012] Reference Figure 1This utility model provides an embodiment of a 48V living power system for a motorhome, comprising a 48V generator 1, a dual-function unit 2, a 48V battery pack 3, an external power supply 4, a DC charging port 5, an AC charging port 6, a charging / inverter integrated unit 7, a protocol gateway module 8, a touch screen 9, a solar panel 10, and a solar controller 11. When the vehicle is in motion, the onboard engine drives the 48V generator 1 to output 48V DC power. The dual-function unit 2 has functions for voltage control, charge / discharge management, and vehicle charging control. The 48V battery pack 3 stores electricity to power household appliances within the motorhome. The charging / inverter integrated unit 7 controls four functional modules: DC fast charging, AC charging, inverter, and solar charging. It can change the charging mode according to the input power to charge the 48V battery pack 3. The protocol gateway module 8 controls the instruction and information interaction between the various units. The touch screen 9 is the human-machine interface, allowing users to control and observe the operation of each unit. The solar panel 10 is installed on the top of the motorhome and can be folded and disassembled for convenience. During maintenance, the solar controller 11 and the integrated charging and reverse charging unit 7 can charge the 48V battery pack 3. The 48V generator 1 is electrically connected to the integrated unit 2, which in turn is electrically connected to the 48V battery pack 3. The protocol gateway module 8 is also electrically connected to the 48V battery pack 3, and the integrated unit 2 is electrically connected to the protocol gateway module 8. The 48V generator 1 is controlled by the integrated unit 2 and the protocol gateway module 8 to charge the 48V battery pack 3 while driving. The maximum charging power can reach 3.2kW. When driving or when the engine is running, the 48V generator 1 continuously outputs charge into the integrated unit 2 through the engine. The integrated unit 2 detects the 48V battery pack. When the charge in the 48V battery pack is low and the generator speed meets the charging threshold, driving charging is started. The integrated unit 2 controls the power at 3.2kW to charge the 48V battery pack 3. The current, voltage, and temperature information during the charging process are reported to the protocol gateway module 8 in real time and displayed on the touch screen 9. The charging power can be controlled through the touch screen 9.
[0013] External power supply 4 includes a DC charging pile 401, an AC charging pile 402, and a mains outlet 403. External power supply 4 is located in cities or charging areas, using different outlets for charging at different power levels. The DC charging port 5 is electrically connected to the integrated charging and reverse charging unit 7, which is electrically connected to the 48V battery pack 3. The protocol gateway module 8 is also electrically connected to the integrated charging and reverse charging unit 7. The DC charging pile 401 is connected via the DC charging port 5. Controlled by the integrated charging and reverse charging unit 7 and the protocol gateway module 8, it performs DC fast charging on the 48V battery pack 3, with a maximum charging power of 5kW. When the external DC charging pile 401 is connected via the DC charging port 5, the integrated charging and reverse charging unit 7 detects the signal, switches to DC fast charging mode, and controls the power at 5kW. The protocol gateway module 8 issues a charging command. During charging, the system monitors the charging process. If the battery temperature or charge level becomes abnormal, or if the charging power is automatically reduced or the charging process terminates after the battery is fully charged, the AC charging port 6 is electrically connected to the charging and reverse charging unit 7. The AC charging pile 402 is connected through the AC charging port 6. Controlled by the charging and reverse charging unit 7 and the protocol gateway module 8, it performs AC charging on the 48V battery pack 3, with a maximum charging power of 3.6kW. After the AC charging pile 402 is connected through the AC charging port 6, the charging and reverse charging unit 7 detects it, switches it to the corresponding charging mode, and then performs rectification and voltage boosting to convert the power into 48V charging current. Similarly, the protocol gateway module 8 performs power scheduling and status monitoring. The AC power outlet 403 is connected to the AC charging port 6 through a national standard charging gun. Controlled by the charging and reverse charging unit 7 and the protocol gateway module 8, it charges the 48V battery pack 3, with a maximum charging power of 2.2kW. The charging process is the same as AC charging, but the power limit is lower.
[0014] Reference Figure 1The 48V DC output from the 48V battery pack 3 is stepped down and converted to 12V DC by the dual-function unit 2 to supply 12V low-voltage equipment in the vehicle. The touchscreen 9 is electrically connected to the protocol gateway module 8. When using low-voltage equipment, the dual-function unit 2 converts the 48V output from the 48V battery pack 3 to 12V DC for convenient use. The 48V DC output from the 48V battery pack 3 is inverted to 220V AC by the charging and inverter unit 7. It is then electrically connected to household appliances via the protocol gateway module 8. When 220V household appliances are needed in the vehicle, the charging and inverter unit 7 switches to inverter mode. The 48V battery pack 3 converts the 48V DC to 220V household AC output via the inverter. This is then linked with the touchscreen 9 via the protocol gateway module 8 to display the inverter power and remaining power in real time, and the touchscreen 9 controls the power consumption of household appliances. A solar panel 10 is installed on the roof of the RV. The solar panel 10 is electrically connected to a solar controller 11, which is in turn electrically connected to a charging and reverse converter 7. The solar controller 11 charges the 48V battery pack 3 through the charging and reverse converter 7 and the protocol gateway module 8. Under sufficient sunlight, the solar panel 10 generates direct current. This direct current passes through the solar controller 11, which uses the MPPT algorithm to capture the maximum available power of the solar panel 10 and converts it into voltage and current suitable for charging the 48V battery pack 3. The battery pack is charged using the photovoltaic charging mode of the charging and reverse converter 7 and coordinated by the protocol gateway module 8, with a maximum charging power of 1.44kW.
[0015] Working Principle: First, while driving, the 48V generator 1 is driven by the RV engine to generate electricity. This electricity is then connected to the integrated charging unit 2 via a cable. The output current is then conducted from the integrated unit 2 to the 48V battery pack 3 via the cable. The charging process is then controlled by the protocol gateway module 8, allowing the 48V battery pack 3 to be charged while driving, reducing charging time during stops and providing high charging power. When using the DC charging pile 401, the national standard DC fast charging gun on the DC charging pile 401 is inserted into the DC charging port 5 and connected to the integrated charging and reverse charging unit 7 via a cable. This cable then connects to the 48V battery pack 3, and under the control of the protocol gateway module 8, the 48V battery pack 3 undergoes DC fast charging. When using the AC charging pile 402, insert the national standard AC fast charging gun into the AC charging port 6, connect it to the charging and reverse charging unit 7 via a cable, and then connect the cable from the charging and reverse charging unit 7 to the 48V battery pack 3. Under the control of the protocol gateway module 8, the 48V battery pack 3 is fast-charged via AC. The same principle applies when using AC power. Insert one end of the charging gun (which comes with the vehicle) into the AC power socket 403 and the other end into the AC charging port 6 to charge the 48V battery pack 3 via AC. In the field where there are no charging piles or when the vehicle is not in motion, the solar panel 10 can be used for charging. The electricity generated by the solar panel 10 is regulated by the solar controller 11, and then connected to the charging and reverse charging unit 7 via a cable. The output current is then controlled by the charging and reverse charging unit 7 and the protocol gateway module 8, and conducted through the cable to the 48V battery pack 3. Finally, the 48V battery pack 3 is charged under the control of the protocol gateway module 8.
[0016] Secondly, once charging is complete, the electrical appliances in the vehicle can be used. The devices can be controlled through the human-machine interface on the touch screen 9, and commands can be sent to the protocol gateway module 8 to control the operation of each device.
[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A 48V living power system for a motorhome, comprising a 48V generator (1), a two-in-one unit (2), a 48V battery pack (3), an external power supply (4), a DC charging port (5), an AC charging port (6), a charging and inverter integrated unit (7), a protocol gateway module (8), a touch screen (9), a solar panel (10), and a solar controller (11), characterized in that: The 48V generator (1) is electrically connected to the two-in-one machine (2), the two-in-one machine (2) is electrically connected to the 48V battery pack (3), the protocol gateway module (8) is electrically connected to the 48V battery pack (3), the two-in-one machine (2) is electrically connected to the protocol gateway module (8), the 48V generator (1) is controlled by the two-in-one machine (2) and the protocol gateway module (8) to charge the 48V battery pack (3) for driving, and the maximum charging power can reach 3.2kW. The external power supply (4) includes a DC charging pile (401), an AC charging pile (402) and a mains power outlet (403).
2. The 48V living power system for a motorhome according to claim 1, characterized in that: The DC charging port (5) is electrically connected to the integrated charging and reversing machine (7), the integrated charging and reversing machine (7) is electrically connected to the 48V battery pack (3), the protocol gateway module (8) is electrically connected to the integrated charging and reversing machine (7), the DC charging pile (401) is connected through the DC charging port (5), and the 48V battery pack (3) is DC fast charged by the integrated charging and reversing machine (7) and controlled by the protocol gateway module (8), with a maximum charging power of 5kW.
3. The 48V living power system for a motorhome according to claim 1, characterized in that: The AC charging port (6) is electrically connected to the integrated charging and reversing machine (7). The AC charging pile (402) is connected through the AC charging port (6), and is controlled by the integrated charging and reversing machine (7) and the protocol gateway module (8) to AC charge the 48V battery pack (3). The maximum charging power can reach 3.6kW.
4. A 48V living power system for a motorhome according to claim 2, characterized in that: The mains power socket (403) is connected to the AC charging port (6) through the national standard charging gun. The 48V battery pack (3) is charged by the integrated charging and reversing machine (7) and controlled by the protocol gateway module (8), with a maximum charging power of 2.2kW.
5. A 48V living power system for a motorhome according to claim 1, characterized in that: The 48V DC power output from the 48V battery pack (3) is stepped down and converted by the two-in-one machine (2) to output 12V DC power to supply the 12V low-voltage equipment in the vehicle. The touch screen (9) is electrically connected to the protocol gateway module (8).
6. A 48V living power system for a motorhome according to claim 1, characterized in that: The 48V DC power output by the 48V battery pack (3) is converted into 220V AC power by the integrated charging and reversing machine (7), and then electrically connected to everyday electrical appliances through the protocol gateway module (8).
7. A 48V living power system for a motorhome according to claim 1, characterized in that: The solar power panel (10) is installed on the top of the RV. The solar power panel (10) is electrically connected to the solar controller (11). The solar controller (11) is electrically connected to the charging and reversing integrated machine (7). The solar controller (11) charges the 48V battery pack (3) through the charging and reversing integrated machine (7) and the protocol gateway module (8).