New energy automobile photovoltaic charging system, photovoltaic charging method and related products

Abstract

The invention discloses a photovoltaic charging system and a photovoltaic charging method for a new energy automobile and a related product, and the system comprises a photovoltaic cell panel; the vehicle body control unit is used for controlling the photovoltaic cell panel to stretch out and draw back; the MPPT solar charging controller is used for converting the solar energy absorbed by the photovoltaic cell panel into electric energy; a power storage battery; the energy control unit is connected with the vehicle body control unit, the power storage battery, the motor controller and the DC / OBC in a two-in-one mode, and the energy control unit is used for charging the power storage battery and supplying power to the vehicle body control unit; the motor controller is respectively connected with the power storage battery, the MPPT solar charging controller and the motor; the motor controller determines equipment for supplying power to the motor by judging the output voltage conditions of the power storage battery and the MPPT solar charging controller; the DC / OBC two-in-one device is connected with the energy control unit and the vehicle slow charging port.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of photovoltaic charging technology, and in particular, to a photovoltaic charging system and photovoltaic charging method for new energy vehicles and related products. Background Art

[0002] As a new energy source with huge reserves, clean and pollution-free, solar energy is considered to be an alternative to fossil energy. Photovoltaic power generation directly converts light energy into electrical energy using the photovoltaic effect of the semiconductor interface. The maximum power point tracking (MPPT) algorithm in the photovoltaic charging system is designed to ensure that the photovoltaic cell or photovoltaic array works at the maximum efficiency, that is, the maximum power point on its voltage-current characteristic curve. The MTTP technology is used to track the maximum power point of the solar panel so that its output current and voltage reach the optimal state, thereby ensuring the highest charging efficiency of the solar panel.

[0003] The MPPT charging strategy can achieve full storage of low-power energy, but the maximum power point and the best working point also need to be judged and controlled by real-time load information, weather environment, interaction with the BMS battery management system and other conditions. At present, the MPPT methods for finding the maximum power point are mainly divided into constant voltage method, perturbation observation method, and conductance increment method. These algorithms are essentially self-optimization processes and have their own advantages and disadvantages. Summary of the invention

[0004] The embodiments of the present invention provide a new energy vehicle photovoltaic charging system and a photovoltaic charging method and related products, which are used to solve at least one of the above-mentioned technical problems.

[0005] In the first aspect, an embodiment of the present invention provides a photovoltaic charging system for a new energy vehicle, comprising: a photovoltaic panel; a body control unit for controlling the extension and retraction of the photovoltaic panel; an MPPT solar charge controller for converting the solar energy absorbed by the photovoltaic panel into electrical energy; a power battery; an energy control unit respectively connected to the body control unit, the power battery, the motor controller and the DC / OBC two-in-one, the energy control unit being used to charge the power battery and supply power to the body control unit; the motor controller respectively connected to the power battery, the MPPT solar charge controller and the motor, the motor controller determining that it is a device for powering the motor by judging the output voltage of the power battery and the MPPT solar charge controller; the DC / OBC two-in-one being respectively connected to the energy control unit and the vehicle slow charging port.

[0006] In a second aspect, an embodiment of the present invention provides a photovoltaic charging method, comprising: applying a disturbance of a preset step size to the output voltage of the MPPT solar charging controller to obtain a power value at the current moment after the disturbance; judging whether the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance; if the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance, keeping the disturbance direction unchanged and continuing to apply the disturbance in the same direction until the maximum power point is tracked.

[0007] In a third aspect, an embodiment of the present invention provides a new energy vehicle, characterized in that it includes:

[0008] A new energy vehicle photovoltaic charging system according to the first aspect; and a vehicle body connected to the new energy vehicle photovoltaic charging system.

[0009] In a fourth aspect, an embodiment of the present invention provides an electronic device, comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any one of the above-mentioned new energy vehicle photovoltaic charging systems and photovoltaic charging methods of the present invention.

[0010] In a fifth aspect, an embodiment of the present invention provides a storage medium, in which one or more programs including execution instructions are stored. The execution instructions can be read and executed by an electronic device (including but not limited to a computer, a server, or a network device, etc.) to execute any one of the above-mentioned new energy vehicle photovoltaic charging systems and photovoltaic charging methods of the present invention.

[0011] In a sixth aspect, an embodiment of the present invention further provides a computer program product, which includes a computer program stored on a storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes any one of the above-mentioned new energy vehicle photovoltaic charging systems and photovoltaic charging methods.

[0012] The method of the present application detects the current output voltage and current of the array based on the principle of the perturbation observation method, obtains the output power, and compares it with the power at the previous moment, and repeats this cycle. When the external environmental parameters change, the system can smoothly track their changes and eliminate the disadvantage of easy oscillation. It can achieve efficient intelligent charging and reasonable distribution of energy, reduce the energy consumption of the whole vehicle, effectively improve the continuous driving mileage of the vehicle, alleviate the difficulty in finding a charging place when going out, and effectively reduce the user's mileage anxiety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0014] Figure 1 A structural block diagram of a photovoltaic charging system for a new energy vehicle provided by an embodiment of the present invention;

[0015] Figure 2 A flow chart of a photovoltaic charging method provided by one embodiment of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0018] Please refer to Figure 1 , which shows a structural block diagram of a new energy vehicle photovoltaic charging system provided by an embodiment of the present invention.

[0019] like Figure 1 As shown, photovoltaic panels;

[0020] A vehicle body control unit for controlling the extension and retraction of the photovoltaic panel;

[0021] An MPPT solar charge controller for converting solar energy absorbed by the photovoltaic panel into electrical energy;

[0022] Power battery;

[0023] An energy control unit connected to the body control unit, the power battery, the motor controller and the DC / OBC two-in-one respectively, the energy control unit is used to charge the power battery and supply power to the body control unit;

[0024] The motor controller is connected to the power battery, the MPPT solar charge controller and the motor respectively, and the motor controller determines the device to power the motor by judging the output voltage of the power battery and the MPPT solar charge controller;

[0025] The DC / OBC two-in-one is connected to the energy control unit and the vehicle slow charging port respectively.

[0026] In this embodiment, the photovoltaic panel is a photoelectric semiconductor sheet that uses sunlight to generate electricity directly, also known as a "solar chip" or "photovoltaic cell". As long as it is illuminated by light that meets certain illumination conditions, it can instantly output voltage and generate current in the presence of a circuit. In physics, it is called solar photovoltaic (abbreviated as PV), or photovoltaic for short.

[0027] The body control unit, also known as the body computer, refers to the electronic control unit (ECU) used to control the body electrical system in automotive engineering. It is one of the important components of the car. Common functions of the body control unit include controlling electric windows, electric rearview mirrors, air conditioning, headlights, turn signals, anti-theft locking system, central locking, defrosting device, etc. The body controller can be connected to other on-board ECUs through the bus. The important task of the body controller is to simplify the operation and reduce the manual operation of the occupants to avoid distracting the occupants. The automobile body control system includes automobile safety, comfort control and information communication systems, which are mainly used to enhance the safety, comfort and convenience of the car.

[0028] MPPT solar charge controller is called solar charge and discharge controller. It is an automatic control device used in solar power generation system to control the charging of batteries by multi-way solar cell arrays and the power supply of batteries to solar inverter loads. It regulates and controls the charging and discharging conditions of batteries, and controls the power output of solar cell modules and batteries to loads according to the power demand of loads. It is the core control part of the entire photovoltaic power supply system.

[0029] A power battery is a power source that provides power for tools, mostly referring to batteries that provide power for electric vehicles, electric trains, electric bicycles, etc.

[0030] The motor controller is an integrated circuit that actively controls the motor to work in a set direction, speed, angle, and response time. In electric vehicles, the function of the motor controller is to convert the electric energy stored in the power battery into the electric energy required to drive the motor according to the gear position, throttle, brake and other instructions to control the start-up, forward and backward speed, climbing strength and other driving conditions of the electric vehicle, or to help the electric vehicle brake and store part of the braking energy in the power battery.

[0031] DC / OBC two-in-one means integrating the on-board charger (OBC) and DC / DC converter into one module to achieve higher integration and better performance.

[0032] In new energy vehicles, DC / DC converters and OBCs each have different functions, but by using them in parallel, better energy management and charging efficiency can be achieved. A DC / DC converter is a power electronic device that converts a DC voltage into another DC voltage. It is widely used in power management, renewable energy systems, electric vehicles, communication equipment and other fields. DC / DC converters can be divided into many types according to their working principles and topological structures. For example, DC / DC converters are mainly used for voltage conversion and energy management in electric vehicles. It can convert high-voltage DC (such as power batteries) into low-voltage DC (such as 12V batteries), and can also achieve bidirectional energy flow, supporting regenerative braking and energy recovery. OBC is a key component in electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs), used to convert external alternating current (AC) into direct current (DC) to charge power batteries. OBCs usually have power factor correction (PFC) and DC / DC conversion functions to ensure efficient charging.

[0033] By using DC / DC and OBC in parallel, more flexible voltage and power management can be achieved, the battery charging process can be optimized, and energy loss can be reduced. The parallel system can perform charging and voltage conversion at the same time, improving the overall charging efficiency and system response speed.

[0034] With the help of control strategies, the photovoltaic charging system for new energy vehicles in this embodiment can achieve efficient intelligent charging and reasonable distribution of energy, reduce the energy consumption of the entire vehicle, effectively increase the vehicle's continuous driving mileage, alleviate the difficulty in finding charging places when going out, and effectively reduce users' mileage anxiety.

[0035] Please refer to Figure 2 , which shows a flow chart of a photovoltaic charging method provided by an embodiment of the present invention, which is used for a motor controller.

[0036] like Figure 2 As shown, in step 201, a disturbance of a preset step length is applied to the output voltage of the MPPT solar charge controller to obtain a power value at the current moment after the disturbance;

[0037] In step 202, it is determined whether the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance;

[0038] In step 203, if the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance, the disturbance direction is kept unchanged, and the disturbance in the same direction is continuously applied until the maximum power point is tracked.

[0039] In this embodiment, for step 201, the photovoltaic charging device collects the output voltage and output current at the current moment, calculates the power value at the current moment, and then applies a disturbance of a preset step size to the output voltage of the MPPT solar charging controller, collects the output voltage and output current at the current moment after the disturbance, and calculates the power value at the current moment after the disturbance.

[0040] Then, for step 202, the photovoltaic charging device determines whether the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance.

[0041] Finally, for step 203, if the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance, it means that the disturbance direction is correct, then the disturbance direction is kept unchanged, and the disturbance in the same direction is continued to be applied until the maximum power point is tracked; if the power value at the current moment after the disturbance is less than the power value at the previous moment before the disturbance, it means that the disturbance direction is wrong, and the disturbance direction is changed until the maximum power point is tracked; in a specific embodiment, when the working point is located in an area far away from the maximum power point, the voltage increases with a larger step of disturbance, and the step size of the disturbance is automatically reduced as it approaches the maximum power point. Among them, the working point refers to the current voltage and current combination of the photovoltaic module, and this combination determines the output power. The task of maximum power point tracking is to continuously adjust this working point to make it close to the maximum power point.

[0042] The method of this embodiment applies a disturbance of a preset step size to the output voltage of the MPPT solar charging controller to obtain the power value at the current moment, and compares it with the power value at the previous moment, and repeats this cycle until the maximum power point is tracked, thereby achieving efficient intelligent charging and reasonable distribution of energy, reducing the energy consumption of the entire vehicle.

[0043] In some optional embodiments, after applying a disturbance of a preset step length to the output voltage of the MPPT solar charge controller to obtain a power value after the disturbance, the method further includes:

[0044] The photovoltaic charging device adds a power sampling in the half cycle after each moment to obtain the predicted power in the next cycle at each moment; for example, when the system runs to the 50% phase point of each standard cycle, an additional power feature collection is inserted on the basis of the original periodic sampling, and then the output power of the working point on the output characteristic curve at the next cycle moment is predicted based on the power value of the additional power feature collection and the power value of the previous moment.

[0045] Then, the photovoltaic charging device increases the voltage disturbance amplitude in the half cycle after each moment to obtain the actual power of the next cycle at each moment; for example, when the system runs to the midpoint of each sampling cycle, a step disturbance is applied to the output voltage of the photovoltaic array. The disturbance step size is dynamically adjusted according to the slope of the current power-voltage curve. When it is detected that the working point is in the steep area of ​​the maximum power point, a small step size disturbance is used, and in the flat area, a large step size strategy is switched. After the disturbance, the instantaneous power is calculated, and the mapping relationship matrix between the power increment and the voltage disturbance is established by comparing the difference with the power value of the previous cycle. The dynamic internal resistance of the photovoltaic array is fitted using the least squares method, and finally the expected actual power of the next cycle is derived. This half-cycle staggered disturbance strategy enables the system to complete the secondary approximation of the maximum power point in a short time, which is particularly suitable for fast power tracking of photovoltaic arrays in cloudy weather.

[0046] Finally, based on the difference between the predicted power and the actual power, the disturbance direction and amplitude of the output voltage of the MPPT solar charge controller are adjusted to solve the problem of disturbance imbalance.

[0047] In some optional embodiments, the method further includes:

[0048] The photovoltaic charging device determines whether the voltage of the MPPT solar charging controller is greater than the voltage of the power battery; if the voltage of the MPPT solar charging controller is greater than the voltage of the power battery, the MPPT solar charging controller is controlled to charge the power battery. Thus, the photovoltaic stored electricity can be used to directly charge the power battery.

[0049] In some optional embodiments, the determining whether the voltage of the MPPT solar charge controller is greater than the voltage of the power battery includes:

[0050] If the voltage of the MPPT solar charge controller is greater than or equal to the voltage of the power battery, the MPPT solar charge controller is controlled to supply power to the new energy vehicle; if the voltage of the MPPT solar charge controller is less than the voltage of the power battery, the power battery is controlled to supply power to the new energy vehicle. Thus, the photovoltaic stored electricity can be used to directly supply power to the high-voltage equipment of the new energy vehicle.

[0051] In some optional embodiments, the photovoltaic panel retractable mechanism includes at least an upper photovoltaic panel and a lower photovoltaic panel, and is arranged on the top of the vehicle body. The method includes: in response to a retractable instruction, the upper photovoltaic panel or the lower photovoltaic panel is retracted based on the retractable instruction, thereby effectively increasing the illuminated area.

[0052] An embodiment of the present invention provides a new energy vehicle, including: a new energy vehicle photovoltaic charging system; and a vehicle body connected to the new energy vehicle photovoltaic charging system.

[0053] The automotive photovoltaic charging system components of the present invention include a photovoltaic cell array, a photovoltaic panel telescopic mechanism, an MPPT solar boost charging controller, an energy control unit, a DC / DC, etc. With the help of a control strategy, the photovoltaic charging system can achieve high-efficiency intelligent charging and reasonable energy distribution, reduce the energy consumption of the entire vehicle, effectively improve the vehicle's continuous driving mileage, alleviate the difficulty in finding a charging place when going out, and effectively reduce users' mileage anxiety.

[0054] The photovoltaic charging system provided by the present invention adopts flexible solar panels, which are arranged on the top of the vehicle body and arranged in two layers according to the roof shape. The upper photovoltaic panel can be automatically extended by the body controller according to the vehicle usage scenario, effectively expanding the illumination area. According to its area and material, the output power can reach 650w, providing more energy for the power battery and other accessories.

[0055] The present invention provides a photovoltaic charging algorithm for photovoltaic vehicles, which is mainly optimized for the existing MPPT technology. The method of finding the maximum power point by continuously disturbing the working point of the photovoltaic system is based on the working principle of first disturbing the output voltage value, observing the current power and the power value at the previous moment, and if the power value increases, the disturbance direction is correct, and the disturbance continues in the same direction, thereby realizing the maximum power tracking of the photovoltaic panel and effectively improving the conversion efficiency of solar energy to electrical energy.

[0056] The present invention provides a photovoltaic charging algorithm for photovoltaic vehicles. Aiming at the drawback that the above-mentioned disturbance observation method is prone to misjudgment in an environment with rapidly changing light, a power sampling is added half a cycle after the sampling point k to obtain the predicted power P(k) of the next cycle of the sampling point. At the same time, the voltage disturbance amount is increased half a cycle after the sampling point. The idea of ​​average power is used to obtain the power value P(K+1) of the next cycle. Therefore, P(k) and P(K+1) are two working points on the same irradiance before and after the voltage disturbance, thereby solving the problem of disturbance imbalance.

[0057] The present invention provides a photovoltaic charging algorithm for photovoltaic vehicles, which realizes that when the DC / DC control relay is closed and the MPPT controller is connected to the DC / DC, the DC / DC is powered according to the output voltage of the power battery and the MPPT. When the MPPT output voltage is high, the MPPT powers the DC / DC and charges the power battery; when the MPPT voltage is lower than the power battery voltage, the power battery powers the DC / DC. The MPPT control strategy is uniformly burned into the MCU motor controller.

[0058] The present invention provides a photovoltaic charging MPPT algorithm, the key of which is that the energy control unit integrates the intelligent control algorithm with the monitoring technology, thereby achieving the detection and management of the high-voltage system, charging the power battery, and providing power for the high-voltage components.

[0059] The present invention provides a photovoltaic charging algorithm for photovoltaic vehicles, which optimizes the conventional MTTP perturbation observation method. When the working point is located in an area far away from the maximum power point, the voltage increases with a large step of perturbation, and as it approaches the maximum power point, the perturbation step automatically decreases. The optimal power point of the photovoltaic panel is tracked by a stepwise approximation method, and misjudgment is avoided by a power prediction method.

[0060] The electric energy stored in the photovoltaic charging method can directly charge the power battery and power the high-voltage equipment of the whole vehicle, and the signal source for DC power supply is switched by judging the MPPT voltage and the power battery voltage.

[0061] The photovoltaic charging algorithm of the photovoltaic vehicle of the present invention can automatically extend and retract the photovoltaic panels to power the battery and other accessories of the electric vehicle in a variety of scenarios, make full use of solar energy, significantly improve the efficiency of solar energy and electric energy conversion, shorten the vehicle charging time, reduce the energy loss of the on-board battery, and realize efficient management and use of energy, thereby improving user experience, increasing vehicle mileage, reducing user mileage anxiety, promoting the promotion of electric vehicles, and contributing to the creation of a low-carbon and environmentally friendly transportation system.

[0062] Photovoltaic vehicles install double-layer flexible solar panels on the top of the vehicle body, which automatically extend through the vehicle body controller under sufficient sunlight conditions to absorb more solar energy and convert it;

[0063] The solar energy absorbed by the photovoltaic panels is converted into electrical energy and stored in the MPPT solar charge controller;

[0064] In the present invention, the photovoltaic charging algorithm is integrated into the MCU motor controller, and the MCU determines the output voltage of the power battery and the MPPT to determine which one supplies power to the DC / DC;

[0065] The photovoltaic charging algorithm in the present invention can track the maximum power point of the solar panel so that the output current and voltage reach the optimal state, thereby ensuring the highest charging efficiency of the solar panel.

[0066] In other embodiments, the present invention also provides a non-volatile computer storage medium, which stores computer executable instructions, and the computer executable instructions can execute the new energy vehicle photovoltaic charging system and photovoltaic charging method in any of the above method embodiments;

[0067] As an implementation mode, the non-volatile computer storage medium of the present invention stores computer executable instructions, and the computer executable instructions are configured as follows:

[0068] Photovoltaic panels;

[0069] A vehicle body control unit for controlling the extension and retraction of the photovoltaic panel;

[0070] An MPPT solar charge controller for converting solar energy absorbed by the photovoltaic panel into electrical energy;

[0071] Power battery;

[0072] An energy control unit connected to the body control unit, the power battery, the motor controller and the DC / OBC two-in-one respectively, the energy control unit is used to charge the power battery and supply power to the body control unit;

[0073] The motor controller is connected to the power battery, the MPPT solar charge controller and the motor respectively, and the motor controller determines the device to power the motor by judging the output voltage of the power battery and the MPPT solar charge controller;

[0074] The DC / OBC two-in-one is connected to the energy control unit and the vehicle slow charging port respectively.

[0075] As another embodiment, the non-volatile computer storage medium of the present invention stores computer executable instructions, and the computer executable instructions are configured as follows:

[0076] Applying a disturbance of a preset step length to the output voltage of the MPPT solar charge controller to obtain a power value at the current moment after the disturbance;

[0077] Determine whether the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance;

[0078] If the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance, the disturbance direction is kept unchanged, and the disturbance in the same direction is continuously applied until the maximum power point is tracked.

[0079] The non-volatile computer-readable storage medium may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the photovoltaic charging system and the photovoltaic charging device of the new energy vehicle. In addition, the non-volatile computer-readable storage medium may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the non-volatile computer-readable storage medium may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the photovoltaic charging system and the photovoltaic charging device of the new energy vehicle via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0080] An embodiment of the present invention also provides a computer program product, which includes a computer program stored on a non-volatile computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes any one of the above-mentioned new energy vehicle photovoltaic charging systems and photovoltaic charging methods.

[0081] Figure 3 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention, such as Figure 3 As shown, the device includes: one or more processors 310 and a memory 320, Figure 3 A processor 310 is taken as an example. The equipment of the photovoltaic charging system and photovoltaic charging method for new energy vehicles may also include: an input device 330 and an output device 340. The processor 310, the memory 320, the input device 330 and the output device 340 may be connected via a bus or other means. Figure 3 In the example, the bus connection is used. The memory 320 is the above-mentioned non-volatile computer-readable storage medium. The processor 310 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 320, that is, the photovoltaic charging system and photovoltaic charging method of the new energy vehicle in the above-mentioned method embodiment are realized. The input device 330 can receive input digital or character information, and generate key signal input related to user settings and function control of the photovoltaic charging system and photovoltaic charging device of the new energy vehicle. The output device 340 may include display devices such as display screens.

[0082] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0083] As an implementation mode, the electronic device is applied to a photovoltaic charging system and a photovoltaic charging device for a new energy vehicle, and includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can:

[0084] Photovoltaic panels;

[0085] A vehicle body control unit for controlling the extension and retraction of the photovoltaic panel;

[0086] An MPPT solar charge controller for converting solar energy absorbed by the photovoltaic panel into electrical energy;

[0087] Power battery;

[0088] An energy control unit connected to the body control unit, the power battery, the motor controller and the DC / OBC two-in-one respectively, the energy control unit is used to charge the power battery and supply power to the body control unit;

[0089] The motor controller is connected to the power battery, the MPPT solar charge controller and the motor respectively, and the motor controller determines the device to power the motor by judging the output voltage of the power battery and the MPPT solar charge controller;

[0090] The DC / OBC two-in-one is connected to the energy control unit and the vehicle slow charging port respectively.

[0091] As another embodiment, the electronic device is applied to a photovoltaic charging system and a photovoltaic charging device for a new energy vehicle, and includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can:

[0092] Applying a disturbance of a preset step length to the output voltage of the MPPT solar charge controller to obtain a power value at the current moment after the disturbance;

[0093] Determine whether the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance;

[0094] If the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance, the disturbance direction is kept unchanged, and the disturbance in the same direction is continuously applied until the maximum power point is tracked.

[0095] The electronic device of the embodiment of the present application exists in various forms, including but not limited to:

[0096] (1) Mobile communication devices: These devices are characterized by their mobile communication functions and their main purpose is to provide voice and data communications. These terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.

[0097] (2) Ultra-mobile personal computer devices: These devices fall into the category of personal computers, have computing and processing capabilities, and generally also have mobile Internet access features. These terminals include: PDA, MID and UMPC devices, such as iPad.

[0098] (3) Portable entertainment devices: These devices can display and play multimedia content. They include audio and video players (such as iPods), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

[0099] (4) Server: A device that provides computing services. The server consists of a processor, hard disk, memory, system bus, etc. The server is similar to the general computer architecture, but because it needs to provide highly reliable services, it has higher requirements in terms of processing power, stability, reliability, security, scalability, manageability, etc.

[0100] (5) Other electronic devices with data interaction functions.

[0101] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0102] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic charging system for new energy vehicles, characterized in that: include: Photovoltaic panels; A vehicle body control unit for controlling the extension and retraction of the photovoltaic panel; An MPPT solar charge controller for converting solar energy absorbed by the photovoltaic panel into electrical energy; Power battery; An energy control unit connected to the body control unit, the power battery, the motor controller and the DC / OBC two-in-one respectively, the energy control unit is used to charge the power battery and supply power to the body control unit; The motor controller is connected to the power battery, the MPPT solar charge controller and the motor respectively, and the motor controller determines the device to power the motor by judging the output voltage of the power battery and the MPPT solar charge controller; The DC / OBC two-in-one is connected to the energy control unit and the vehicle slow charging port respectively.

2. A photovoltaic charging method, used for the motor controller according to claim 1, characterized in that: The method comprises: Applying a disturbance of a preset step length to the output voltage of the MPPT solar charge controller to obtain a power value at the current moment after the disturbance; Determine whether the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance; If the power value at the current moment after the disturbance is greater than the power value at the previous moment before the disturbance, the disturbance direction is kept unchanged, and the disturbance in the same direction is continuously applied until the maximum power point is tracked.

3. The photovoltaic charging method according to claim 2, characterized in that: After applying a disturbance of a preset step length to the output voltage of the MPPT solar charge controller to obtain a power value after the disturbance, the method further includes: In the half cycle after each moment, a power sampling is added to obtain the predicted power in the next cycle of each moment; In the half cycle after each moment, the disturbance amplitude of the voltage is increased to obtain the actual power of the next cycle of each moment; Based on the difference between the predicted power and the actual power, the disturbance direction and the disturbance amplitude of the output voltage of the MPPT solar charge controller are adjusted.

4. The photovoltaic charging method according to claim 2, characterized in that: The method further comprises: Determine whether the voltage of the MPPT solar charge controller is greater than the voltage of the power battery; If the voltage of the MPPT solar charging controller is greater than the voltage of the power battery, the MPPT solar charging controller is controlled to charge the power battery.

5. The photovoltaic charging method according to claim 4, wherein: The determining whether the voltage of the MPPT solar charge controller is greater than the voltage of the power battery comprises: If the voltage of the MPPT solar charge controller is greater than or equal to the voltage of the power battery, control the MPPT solar charge controller to supply power to the new energy vehicle; If the voltage of the MPPT solar charging controller is lower than the voltage of the power battery, the power battery is controlled to supply power to the new energy vehicle.

6. The photovoltaic charging method according to claim 2, wherein: The photovoltaic panel retractable mechanism comprises at least an upper photovoltaic panel and a lower photovoltaic panel, and is arranged on the top of the vehicle body. The method comprises: In response to the extension / retraction instruction, the upper photovoltaic panel or the lower photovoltaic panel is extended / retracted based on the extension / retraction instruction.

7. A new energy vehicle, characterized in that: include: The new energy vehicle photovoltaic charging system according to claim 1; And a car body connected to the new energy vehicle photovoltaic charging system.

8. An electronic device, comprising: At least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the steps of the photovoltaic charging method according to any one of claims 2 to 7.

9. A storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the photovoltaic charging method according to any one of claims 2 to 7 are implemented.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the photovoltaic charging method described in any one of claims 2-7 are implemented.

Images