Intelligent control motor home power supply all-in-one machine

Abstract

The utility model provides an intelligent control motor home power supply all-in-one machine, and the intelligent control motor home power supply all-in-one machine is characterized in that a control power supply module comprises a DC-DC conversion circuit, a DC-AC conversion circuit, a filtering circuit, a first relay module, a DC-DC buck-boost circuit and a second relay module; the DC-DC conversion circuit, the DC-AC conversion circuit, the filtering circuit and the first relay module are sequentially connected, the AC input module and the AC load module are respectively connected with the first relay module, the DC-DC buck-boost circuit is connected with the second relay module, the solar energy input module and the front vehicle battery module are respectively connected with the second relay module, and the front vehicle battery module is connected with the second relay module. The rear vehicle battery module is connected with the DC-DC conversion circuit and the DC-DC buck-boost circuit, the DC load module is connected with the DC-DC conversion circuit and the DC-DC buck-boost circuit, and the intelligent control center is connected with the control power supply module through a driving circuit, a detection circuit and a control circuit. The system has obvious advantages in the aspects of power supply, performance stability, cost and maintenance, system compatibility and safety and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of motorhome power distribution systems, and in particular to an intelligent control all-in-one machine for motorhome power supply. Background Art

[0002] Traditional RV power supplies are equipped with independent inverters, chargers, MPPT solar controllers, etc., which not only cannot meet the various power supply needs of the entire RV, but also have defects such as large size, many assembly connection wires, and cumbersome control. Specifically, due to the capacity of the on-board power supply, there is often a significant shortage between power supply and demand; under extreme conditions, the life and performance of lithium batteries may be greatly reduced, resulting in the power system being unable to meet the needs of RV users; compared with traditional 12V power systems, more advanced power systems (such as 48V power systems) are often more expensive. This not only increases the overall manufacturing cost of RVs, but also raises the threshold for users to buy cars. Therefore, it is necessary to produce an intelligent control RV power all-in-one machine to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide an intelligent control unit for RV power supply to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An intelligent control RV power all-in-one machine comprises a control power module, an AC input module, an AC load module, a DC load module, a solar input module, a front vehicle battery module, a rear vehicle battery module and an intelligent control center. The control power module comprises a DC-DC conversion circuit, a DC-AC conversion circuit, a filter circuit, a first relay module, a DC-DC buck-boost circuit and a second relay module. The DC-DC conversion circuit, the DC-AC conversion circuit, the filter circuit and the first relay module are connected in sequence. The AC input module and the AC load module are respectively connected to the first relay module, the DC-DC buck-boost circuit is connected to the second relay module, the solar input module and the front vehicle battery module are respectively connected to the second relay module, the rear vehicle battery module is connected to the DC-DC conversion circuit and the DC-DC buck-boost circuit, the DC load module is connected to the DC-DC conversion circuit and the DC-DC buck-boost circuit, and the intelligent control center is respectively connected to the control power module through a drive circuit, a detection circuit and a control circuit.

[0006] Further description of the utility model: It also includes a DC auxiliary power supply and an AC auxiliary power supply. The DC auxiliary power supply is connected to the control power supply module and the intelligent control center respectively, and the AC auxiliary power supply is connected to the control power supply module and the intelligent control center respectively.

[0007] Further description of the utility model: it also includes a display module, and the display module is connected to the intelligent control center.

[0008] Further description of the utility model: The control power supply module also includes a first reverse connection protection circuit, and two ends of the first reverse connection protection circuit are respectively connected to the rear vehicle battery module and the DC-DC conversion circuit.

[0009] Further description of the utility model: The control power supply module also includes a second reverse connection protection circuit, and two ends of the second reverse connection protection circuit are respectively connected to the DC-DC buck-boost circuit and the second relay module.

[0010] The beneficial effects of the utility model are: four traditional independent power sources are combined together, and the inverter charging is bidirectional, sharing power components, and the DC-DC is a step-up and step-down bidirectional operation. At the same time, the MPPT is also shared with the power components of the DC-DC, and the same control center is used to control the working mode of the power supply in different states to meet the overall needs of the RV. On the other hand, the design has simple circuits, low cost, small size, intelligent control, and stronger compatibility, which provides customers with a better experience. RV customers only need to purchase an RV power all-in-one machine to meet the power supply needs of the entire RV, which greatly reduces the purchase cost, and is more convenient to maintain and reduces the wiring connections between power sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a connection schematic diagram of the utility model;

[0012] Figure 2 This is a connection diagram of the control power module in the utility model;

[0013] Figure 3 It is a circuit schematic diagram of the utility model;

[0014] Figure 4 It is a circuit schematic diagram of the control power module in the utility model;

[0015] Description of reference numerals:

[0016] 01. Control power module; 011. First reverse connection protection circuit; 012. DC-DC conversion circuit; 013. DC-AC conversion circuit; 014. Filter circuit; 015. First relay module; 016. DC-DC step-up and step-down circuit; 017. Second reverse connection protection circuit; 018. Second relay module; 02. AC input module; 03. AC load module; 04. DC load module; 05. Solar input module; 06. Front vehicle battery module; 07. Rear vehicle battery module; 08. Intelligent control center; 09. DC auxiliary power supply; 10. AC auxiliary power supply; 11. Display module. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] like Figures 1 to 4 As shown, an intelligent control RV power all-in-one includes a control power module 01, an AC input module 02, an AC load module 03, a DC load module 04, a solar input module 05, a front vehicle battery module 06, a rear vehicle battery module 07 and an intelligent control center 08. The control power module 01 includes a DC-DC conversion circuit 012, a DC-AC conversion circuit 013, a filter circuit 014, a first relay module 015, a DC-DC buck-boost circuit 016 and a second relay module 018, and the DC-DC conversion circuit 012, the DC-AC conversion circuit 013, the filter circuit 014 and the first relay module 01 5 are connected in sequence, the AC input module 02 and the AC load module 03 are connected to the first relay module 015 respectively, the DC-DC buck-boost circuit 016 is connected to the second relay module 018, the solar input module 05 and the front vehicle battery module 06 are connected to the second relay module 018 respectively, the rear vehicle battery module 07 is connected to the DC-DC conversion circuit 012 and the DC-DC buck-boost circuit 016, the DC load module 04 is connected to the DC-DC conversion circuit 012 and the DC-DC buck-boost circuit 016, and the intelligent control center 08 is connected to the control power supply module 01 through the drive circuit, the detection circuit and the control circuit respectively.

[0019] In the present design, a DC auxiliary power supply 09 and an AC auxiliary power supply 10 are also included. The DC auxiliary power supply 09 is connected to the control power supply module 01 and the intelligent control center 08 respectively, and the AC auxiliary power supply 10 is connected to the control power supply module 01 and the intelligent control center 08 respectively.

[0020] In the present design, a display module 11 is also included, and the display module 11 is connected to the intelligent control center 08 .

[0021] In the present design, the control power supply module 01 further includes a first reverse connection protection circuit 011 , and two ends of the first reverse connection protection circuit 011 are respectively connected to the rear vehicle battery module 07 and the DC-DC conversion circuit 012 .

[0022] In the present design, the control power supply module 01 further includes a second reverse connection protection circuit 017 , and two ends of the second reverse connection protection circuit 017 are respectively connected to the DC-DC buck-boost circuit 016 and the second relay module 018 .

[0023] This design mainly integrates four functional modules: DC-AC inverter, AC-DC charger, bidirectional DC-DC charger and MPPT solar controller. DC-DC conversion circuit 012, DC-AC conversion circuit 013, filter circuit 014 and first relay module 015 constitute the bidirectional inverter charging main circuit, while DC-DC buck-boost circuit 016, second reverse connection protection circuit 017 and second relay module 018 constitute the bidirectional DC-DC power circuit and MPPT control circuit. The specific functions are as follows:

[0024] Inverter: A device that converts direct current to alternating current;

[0025] Charger: A device that charges batteries;

[0026] Bidirectional DC-DC charger: A charging device that converts one DC voltage to another DC voltage, usually used for voltage conversion and charging inside RVs;

[0027] MPPT Solar Controller: Maximum Power Point Tracking Solar Charge Controller, used to increase the efficiency of solar panels charging batteries.

[0028] Traditional RV power supplies are independent inverters, chargers, DC-DC chargers, and MPPT solar controllers, which cannot meet the power supply needs of the entire RV. They are not only large in size, cumbersome to purchase, and require many assembly and connection wires, but also troublesome and cumbersome to control and prone to misoperation. Specifically, the traditional RV power supply system has the following defects:

[0029] 1. Insufficient electricity and imbalance between supply and demand:

[0030] The increase in electrical equipment inside RVs has led to a sharp increase in power load. Common on-board household appliances such as lights, audio, air conditioners, televisions, microwave ovens, refrigerators, etc. all require a stable power supply. However, due to the limited capacity of the on-board power supply, there is often a clear shortage between power supply and demand.

[0031] Some lithium batteries on the market use cheap control systems to control costs and lack comprehensive and effective testing standards, which further exacerbates the problem of unstable power supply.

[0032] 2. Unstable performance and poor environmental adaptability:

[0033] Lithium batteries are sensitive to environmental factors such as temperature and pressure, and their performance may be significantly affected. Under extreme conditions, the life and performance of lithium batteries may be greatly reduced, resulting in the power system being unable to meet the needs of RV users. Since RVs often travel in various complex environments, this problem of poor environmental adaptability is particularly prominent.

[0034] 3. High cost and maintenance difficulty:

[0035] Compared with the traditional 12V power system, more advanced power systems (such as 48V power systems) are often more expensive. This not only increases the overall manufacturing cost of RVs, but also raises the threshold for users to buy cars.

[0036] The 48V electrical system is more difficult to maintain and requires higher skills and expertise. Once a fault occurs, it may be difficult for users to solve it by themselves and they need to rely on professional maintenance services.

[0037] 4. System incompatibility and selection restrictions:

[0038] RVs that use new power systems may face incompatibility issues with existing equipment, which may cause users to purchase additional adapter equipment or make modifications, increasing usage costs and inconvenience.

[0039] Since most RVs on the market still use traditional power systems, the range of equipment and accessories for new power systems may be limited, which also limits users' freedom of choice.

[0040] 5. Security issues:

[0041] High voltage power supply systems (such as 48V power systems) pose a risk of electric shock and require strict control of current and voltage to ensure user safety.

[0042] The instability of the power supply system may lead to safety hazards such as equipment failure or fire, and users are required to pay special attention during use.

[0043] In summary, the RV power system has obvious defects in power supply, performance stability, cost and maintenance, system compatibility and safety, large size, and complicated assembly. In order to solve these problems, it is necessary to continuously develop more advanced and stable power supply technologies, while improving the standardization and compatibility of RV power systems to reduce usage costs and improve user experience.

[0044] like Figure 3 and 4 As shown: AC input: provides AC input, which is converted by the control power module 01 to charge the battery and supply power to the DC load and AC load;

[0045] Solar input: Provide solar DC input, which is converted to battery and DC and AC loads through control power module 01;

[0046] There are generally two groups of batteries in an RV, the front vehicle battery and the rear vehicle battery. The front vehicle battery mainly powers the vehicle's system; the rear vehicle battery is generally an energy storage battery, which mainly powers electrical appliances; and DC loads and AC loads are both electrical settings of the RV to meet people's daily needs.

[0047] like Figure 3 and 4 As shown:

[0048] Working principle diagram of the main circuit of the bidirectional inverter charger:

[0049] C3, Q4, Q10, T1, Q3, Q6, Q5, Q9, and C1 are DC-DC conversion circuit 012, and the H-bridge formed by Q1, Q2, Q7, and Q8 is DC-AC conversion circuit 013, all of which can work in both directions; L1 and C2 are filter circuit 014, and relays K1, K2, and K3 are used to control input and output when inverter output, AC input, and switching lines.

[0050] Working principle diagram of bidirectional DC-DC and MPPT main circuit:

[0051] C4, Q11, Q13, L2, Q12, Q14, and C5 are bidirectional DC-DC step-up and step-down circuits 016. Relays K4 and K5 are switch controls for DC and PV inputs. The PV main circuit and the DC-DC control circuit are common circuits. Through CPU detection and control, it can be determined whether this circuit is working in the DC-DC state or the PV state.

[0052] Q15, Q16, Q17, and Q18 are the battery reverse connection protection circuits, which effectively reduce machine damage and personal injury caused by customer misoperation.

[0053] Functions and principles of each module:

[0054] 1. DC auxiliary power supply 09 and AC auxiliary power supply 10: both provide stable low-voltage power supply;

[0055] 2. Driving circuit: MOS tube totem circuit;

[0056] 3. Inspection circuit and control circuit: detection and control signals of the whole machine;

[0057] 4. Intelligent Control Center 08: Detects and controls all signals, such as inverter, charging, DC-DC and MPPT. The intelligent control center 08 controls the working status of the machine through detection, processing and calculation.

[0058] 5. Display module 11: display function of the RV power integrated machine;

[0059] Output wiring instructions:

[0060] 1) POS+, NEG-: connected to the energy storage battery at the back of the RV;

[0061] 2) DC OUTPUT+ / -: connect to DC load;

[0062] 3) DC IN / OUT+ / -: Connect to the battery in front of the RV;

[0063] 4) PV+ / -: connect the positive and negative of solar energy input;

[0064] 5) AC OUTPUT: connect to AC output load;

[0065] 6) AC INPUT: connect to AC input power;

[0066] The advantages of this design are: it combines the four traditional independent power sources together, and the inverter charging is bidirectional, sharing power components, and the DC-DC is a step-up and step-down bidirectional operation. At the same time, the MPPT also shares the power components of the DC-DC, and the same control center is used to control the working mode of the power supply in different states to meet the overall needs of the RV. On the other hand, this design has simple circuits, low costs, small size, intelligent control, and stronger compatibility, which makes the customer experience better. RV customers only need to buy an RV power all-in-one machine to meet the power supply needs of the entire RV, which greatly reduces the purchase cost, and is more convenient to maintain and reduces the wiring connections between power sources.

[0067] In summary, the RV power all-in-one has obvious advantages in power supply, performance stability, cost and maintenance, system compatibility and safety. More stable power supply technology improves the standardization and compatibility of RV power systems to reduce usage costs and improve user experience.

[0068] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An intelligent control RV power supply integrated machine, characterized by: It includes a control power module, an AC input module, an AC load module, a DC load module, a solar input module, a front vehicle battery module, a rear vehicle battery module and an intelligent control center. The control power module includes a DC-DC conversion circuit, a DC-AC conversion circuit, a filter circuit, a first relay module, a DC-DC buck-boost circuit and a second relay module. The DC-DC conversion circuit, the DC-AC conversion circuit, the filter circuit and the first relay module are connected in sequence. The AC input module and the AC load module are respectively connected to the first relay module, the DC-DC buck-boost circuit is connected to the second relay module, the solar input module and the front vehicle battery module are respectively connected to the second relay module, the rear vehicle battery module is connected to the DC-DC conversion circuit and the DC-DC buck-boost circuit, the DC load module is connected to the DC-DC conversion circuit and the DC-DC buck-boost circuit, and the intelligent control center is connected to the control power module through a drive circuit, a detection circuit and a control circuit.

2. The intelligent control RV power all-in-one machine according to claim 1, characterized in that: It also includes a DC auxiliary power supply and an AC auxiliary power supply. The DC auxiliary power supply is connected to the control power supply module and the intelligent control center respectively, and the AC auxiliary power supply is connected to the control power supply module and the intelligent control center respectively.

3. The intelligent control RV power all-in-one machine according to claim 1, characterized in that: It also includes a display module, which is connected to the intelligent control center.

4. The intelligent control RV power integrated machine according to claim 1, characterized in that: The control power supply module also includes a first reverse connection protection circuit, and two ends of the first reverse connection protection circuit are respectively connected to the rear vehicle battery module and the DC-DC conversion circuit.

5. The intelligent control RV power all-in-one machine according to claim 1, characterized in that: The control power supply module also includes a second reverse connection protection circuit, and two ends of the second reverse connection protection circuit are respectively connected to the DC-DC buck-boost circuit and the second relay module.

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