Boost DCDC control method, vehicle-mounted photovoltaic system, vehicle, medium and product

Abstract

The invention discloses a boost DCDC control method, a vehicle-mounted photovoltaic system, a vehicle, a medium and a product, and relates to the technical field of vehicle-mounted photovoltaic, and the boost DCDC control method comprises the steps: obtaining weather prediction information, estimating the electric energy which can be collected in a future preset time according to the weather prediction information, and transmitting the estimated electric energy to the vehicle-mounted photovoltaic system; the current photovoltaic energy storage battery electric quantity and the current residual photovoltaic energy storage battery capacity are obtained, working modes are selected according to the electric energy capable of being collected in the future preset time, the current photovoltaic energy storage battery electric quantity and the current residual photovoltaic energy storage battery capacity, and the working modes comprise a forced electricity supplementing mode and an electricity supplementing efficiency priority mode; and controlling a boost DCDC to output energy in the photovoltaic energy storage battery to a power battery according to the working mode. According to the invention, the photovoltaic system selects different working modes under different working conditions, so that the energy absorbed by the solar panel can be efficiently converted to the power battery, and the high-efficiency operation of the photovoltaic system is realized.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted photovoltaic technology, and in particular to a control method for a boosted DC / DC, a vehicle-mounted photovoltaic system, a vehicle, a medium and a product. Background Art

[0002] On-board photovoltaics is one of the important directions for the future development of automobiles, because solar energy can be used as clean renewable energy. Especially for private cars in the vast southern region, there is a lot of parking time that can be used to collect solar energy. Although the current solar power generation is limited, the efficiency and life of solar cells are constantly improving, and the cost is constantly decreasing. This clean and cheap energy will greatly reduce carbon emissions and reduce the load on the power grid.

[0003] Adding photovoltaic panels on the roof can effectively absorb solar energy and charge the power battery by boosting the voltage. It is one of the currently feasible solutions for on-board solar photovoltaic technologies. The area of ​​the vehicle is limited, and the voltage and power generated by the photovoltaic panel solar cells are limited. Usually, the solar energy is first stored in the low-voltage battery, and then the power battery is supplemented by the boost DCDC when the opportunity arises. The energy collected in a day is limited. For example, the solar energy collected in a day on a 2-square-meter roof is expected to be around 1.5kwh. Therefore, the power of the boost DCDC that boosts and converts this energy does not need to be too high, about 1.5kw. Because the load current changes sharply when the vehicle is running, the output end of the low-power boost DCDC is greatly affected by the load, the performance of the boost DCDC is reduced, and the output end components are impacted and overloaded. Generally, when the vehicle stops, the solar energy is boosted to charge the vehicle power battery.

[0004] The existing common vehicle-mounted photovoltaic system and method is that the photovoltaic panel on the roof collects solar energy and is controlled by the MPPT controller to charge the low-voltage photovoltaic energy storage battery. The boost DCDC starts at an appropriate time to boost and convert the energy of the photovoltaic energy storage battery to charge the power battery. However, there is a problem in this process. The efficiency of the boost DCDC controlled by PWM is generally good in the load area around 80%. If it is lower than 40%, the efficiency will drop significantly. The output power of the vehicle-mounted photovoltaic energy storage battery will change due to the influence of battery temperature and SOC. The photovoltaic panel may also have different solar energy absorption and conversion power. Therefore, the input power of the boost DCDC input end is variable. In addition, the output end of the boost DCDC will also limit the rechargeable power due to the temperature and SOC of the power battery, which means that the output power of the boost DCDC also needs to be limited. Therefore, there is a problem that when the load of the boost DCDC changes due to the power limit of the input and output ends, resulting in a low conversion efficiency, how to deal with it, many documents do not mention it or the scheme is unreasonable. Summary of the invention

[0005] The main purpose of this application is to propose a control method for boost DCDC, aiming to achieve high-efficiency operation of a photovoltaic system.

[0006] To achieve the above-mentioned purpose, the present application proposes a control method for a boost DCDC, and the control method for a boost DCDC includes:

[0007] Get weather forecast information;

[0008] Estimate the amount of electricity that can be collected within a preset time in the future based on weather forecast information;

[0009] Obtain the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity;

[0010] Selecting a working mode according to the electric energy that can be collected within a preset time in the future, the current power of the photovoltaic energy storage battery and the current remaining capacity of the photovoltaic energy storage battery, wherein the working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode;

[0011] According to the working mode, the boost DCDC is controlled to output the energy in the photovoltaic energy storage battery to the power battery.

[0012] In one embodiment, the step of selecting a working mode according to the electric energy that can be collected within a preset time in the future, the power of the photovoltaic energy storage battery and the remaining capacity of the photovoltaic energy storage battery, wherein the working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode, specifically includes:

[0013] When the power of the photovoltaic energy storage battery is greater than the preset power of the photovoltaic energy storage battery, select the forced power replenishment mode;

[0014] When the power of the photovoltaic energy storage battery is less than or equal to the preset power of the photovoltaic energy storage battery, the remaining photovoltaic energy storage battery capacity is compared with the electric energy that can be collected within the future preset time;

[0015] If the electric energy that can be collected within the preset time in the future is greater than the remaining photovoltaic energy storage battery capacity, the forced charging mode is selected, otherwise, the charging efficiency priority mode is selected.

[0016] In one embodiment, the step of controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery includes:

[0017] When forced power replenishment is selected, the boost DCDC is directly controlled to output the energy in the photovoltaic energy storage battery to the power battery.

[0018] In one embodiment, the step of controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery includes:

[0019] When the charging efficiency priority mode is selected, the efficiency of the boost DCDC is detected, and it is determined whether the efficiency of the boost DCDC is within the preset efficiency range;

[0020] If the efficiency of the boost DCDC is within a preset efficiency range, the boost DCDC is controlled to operate;

[0021] If the efficiency of the boost DCDC is not within the preset efficiency range, the boost DCDC operation is stopped and a preset waiting time is waited until the efficiency of the boost DCDC is within the preset efficiency range.

[0022] In one embodiment, the step of detecting the efficiency of the boost DCDC and determining whether the efficiency of the boost DCDC is within a preset efficiency range specifically includes:

[0023] Obtain the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery and the chargeable power of the power battery;

[0024] The efficiency of the boost DCDC is determined based on the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery, and the chargeable power of the power battery to determine whether it is within the preset efficiency range.

[0025] In one embodiment, after the step of controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery, the step further includes:

[0026] Obtain the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity;

[0027] Select the working mode according to the electric energy that can be collected within the preset time in the future, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity;

[0028] If the working mode is changed, return to the step of obtaining weather forecast information.

[0029] In addition, to achieve the above purpose, the present application also proposes a vehicle-mounted photovoltaic system, the vehicle-mounted photovoltaic system comprising:

[0030] Solar panels, MPPT controllers, photovoltaic energy storage batteries and boost DCDC;

[0031] The MPPT controller is connected to the solar panel and the photovoltaic energy storage battery respectively, and the boost DCDC is connected to the photovoltaic energy storage battery and the power battery respectively;

[0032] The solar panel is used to collect solar energy and convert it into electrical energy;

[0033] The MPPT controller is used to optimize the electric energy output by the photovoltaic panel and transmit the optimized electric energy to the photovoltaic energy storage battery;

[0034] The photovoltaic energy storage battery is used to receive and store the electric energy transmitted by the MPPT controller;

[0035] The boost DCDC is used to boost the electric energy stored in the photovoltaic energy storage battery and transmit the boosted electric energy to the power battery.

[0036] In addition, to achieve the above objectives, the present application also proposes a vehicle, which can implement the steps of the above-mentioned boost DCDC control method.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the above-mentioned boost DCDC control method are implemented.

[0038] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the above-mentioned boost DCDC control method are implemented.

[0039] The present application discloses a control method of a boost DCDC, a vehicle-mounted photovoltaic system, a vehicle, a medium and a product, and relates to the field of vehicle-mounted photovoltaic technology. The control method of the boost DCDC includes: obtaining weather forecast information, estimating the electric energy that can be collected within a preset time in the future according to the weather forecast information, obtaining the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity, and selecting a working mode according to the electric energy that can be collected within the preset time in the future, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity. The working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode, and the boost DCDC is controlled according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery. The present application enables the photovoltaic system to select different working modes under different working conditions, so that the energy absorbed by the solar panel can be efficiently converted to the power battery, thereby realizing the efficient operation of the photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0041] Figure 1 This is a flow chart of the first embodiment of the boost DCDC control method of the present application;

[0042] Figure 2This is a flow chart of a second embodiment of a control method for boosting DCDC of the present application;

[0043] Figure 3 This is a flow chart of a third embodiment of a control method for boosting DCDC of the present application;

[0044] Figure 4 This is a flow chart of a fourth embodiment of a control method for boosting DCDC of the present application;

[0045] Figure 5 1 is a flow chart of a fifth embodiment of a control method for boosting DCDC of the present application. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a first embodiment of a control method for boosting DCDC of the present application.

[0050] In this embodiment, the boost DCDC control method includes steps S10 to S50;

[0051] S10: Obtain weather forecast information.

[0052] S20: Estimate the electric energy that can be collected within a preset time in the future according to the weather forecast information.

[0053] S30: Acquire the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity.

[0054] S40: Selecting a working mode according to the electric energy that can be collected within a preset time in the future, the current power of the photovoltaic energy storage battery and the current remaining capacity of the photovoltaic energy storage battery, wherein the working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode.

[0055] S50: Controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery.

[0056] It should be noted that the weather forecast information may include sunny or cloudy conditions, cloud cover, precipitation conditions, fog and haze conditions, sunrise and sunset times or other relevant weather forecast information, which is not limited in this embodiment.

[0057] Understandably, vehicles now generally have communication network functions, through which weather forecast information can be obtained in real time.

[0058] It should be noted that the future preset time can be modified by the designer according to actual conditions, and can also be modified according to the sunset time of weather forecast information, and this embodiment does not limit this.

[0059] It should be noted that the photovoltaic energy storage battery may be a hydrochloric acid battery, a lithium-ion battery, or other types of batteries, which are not limited in this embodiment.

[0060] It should be noted that the boost DCDC may be a traditional boost converter, a high-efficiency boost converter, a charge pump boost converter, or a flyback boost converter or other types of boost DCDC, which is not limited in this embodiment.

[0061] It should be noted that the power battery may be a lithium-ion battery, a nickel-hydrogen battery, a fuel cell, a hydrochloric acid battery, or other types of batteries, which are not limited in this embodiment.

[0062] In specific implementation, weather forecast information is obtained, and the electric energy that can be collected within a preset time in the future is estimated based on the weather forecast information, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity are obtained, and a working mode is selected based on the electric energy that can be collected within the preset time in the future, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity. The working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode. According to the working mode, the boost DCDC is controlled to output the energy in the photovoltaic energy storage battery to the power battery.

[0063] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the first embodiment can refer to the above introduction, and will not be repeated in the following. Figure 2 , Figure 2 FIG. 1 is a flow chart of a second embodiment of a control method for boosting DCDC of the present application.

[0064] In this embodiment, the step S40 includes steps S411 to S422;

[0065] S411: When the power of the photovoltaic energy storage battery is greater than the preset power of the photovoltaic energy storage battery, the forced power replenishment mode is selected.

[0066] S421: When the power of the photovoltaic energy storage battery is less than or equal to the preset power of the photovoltaic energy storage battery, the remaining photovoltaic energy storage battery capacity is compared with the electric energy that can be collected within a preset time in the future.

[0067] S422: If the electric energy that can be collected within the preset time in the future is greater than the remaining photovoltaic energy storage battery capacity, the forced charging mode is selected; otherwise, the charging efficiency priority mode is selected.

[0068] It should be noted that the preset photovoltaic energy storage battery power can be modified according to actual needs, and this embodiment does not limit this.

[0069] It is understandable that when the photovoltaic energy storage battery is fully charged, that is, when the photovoltaic energy storage battery charge is greater than the preset photovoltaic energy storage battery charge, it may lead to a phenomenon that there is no capacity to store the energy collected by the solar panels in the future. Therefore, it is necessary to preferentially transmit the electric energy in the photovoltaic energy storage battery to the power battery.

[0070] It is understandable that when the power of the photovoltaic energy storage battery is less than or equal to the preset power of the photovoltaic energy storage battery, if the electric energy that can be collected within the preset time in the future is greater than the remaining capacity of the photovoltaic energy storage battery, it may still lead to the phenomenon that there is no capacity to store the energy collected by the solar panels in the future. Therefore, it is necessary to preferentially transmit the electric energy in the photovoltaic energy storage battery to the power battery.

[0071] It is understandable that when the power of the photovoltaic energy storage battery is less than or equal to the preset power of the photovoltaic energy storage battery, if the electric energy that can be collected within the preset time in the future is less than or equal to the remaining capacity of the photovoltaic energy storage battery, the phenomenon of no capacity to store the energy collected by the solar panels will not occur. Therefore, the efficiency of electric energy conversion needs to be given priority.

[0072] In specific implementation, when the power of the photovoltaic energy storage battery is greater than the preset power of the photovoltaic energy storage battery, the forced power replenishment mode is selected. When the power of the photovoltaic energy storage battery is less than or equal to the preset power of the photovoltaic energy storage battery, the remaining photovoltaic energy storage battery capacity and the electric energy that can be collected within the future preset time are compared. If the electric energy that can be collected within the future preset time is greater than the remaining photovoltaic energy storage battery capacity, the forced power replenishment mode is selected. Otherwise, the power replenishment efficiency priority mode is selected.

[0073] Based on the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those of the second embodiment can be referred to the above introduction, and will not be repeated in the following. Figure 3 , Figure 3 1 is a flow chart of a third embodiment of a control method for boosting DCDC of the present application.

[0074] In this embodiment, the step S50 includes steps S511 to S523;

[0075] S511: When forced power replenishment is selected, the boost DCDC is directly controlled to output the energy in the photovoltaic energy storage battery to the power battery.

[0076] S521: When the power replenishment efficiency priority mode is selected, the efficiency of the boost DCDC is detected, and it is determined whether the efficiency of the boost DCDC is within a preset efficiency range.

[0077] S522: If the efficiency of the boost DCDC is within the preset efficiency range, control the boost DCDC to operate.

[0078] S523: If the efficiency of the boost DCDC is not within the preset efficiency range, stop the boost DCDC operation and wait for a preset waiting time until the efficiency of the boost DCDC is within the preset efficiency range.

[0079] It should be noted that the preset waiting time can be modified according to actual needs, and this embodiment does not limit this.

[0080] It should be noted that the preset efficiency range can be modified according to actual needs, and this embodiment does not limit this.

[0081] It can be understood that the boost DCDC can boost and convert the energy of the energy storage battery and output it to the power battery.

[0082] It can be understood that the efficiency of the boost DCDC has a direct impact on the efficiency of power conversion. When the efficiency of the boost DCDC is within a certain range, charging the upgraded boost DCDC can effectively improve the efficiency of power conversion.

[0083] In specific implementation, when forced power replenishment is selected, the boost DCDC is directly controlled to output the energy in the photovoltaic energy storage battery to the power battery; when the power replenishment efficiency priority mode is selected, the efficiency of the boost DCDC is detected, and it is determined whether the efficiency of the boost DCDC is in the preset efficiency range. If the efficiency of the boost DCDC is in the preset efficiency range, the boost DCDC is controlled to run; if the efficiency of the boost DCDC is not in the preset efficiency range, the boost DCDC is stopped and the preset waiting time is waited until the efficiency of the boost DCDC is in the preset efficiency range.

[0084] Based on the third embodiment of the present application, in the fourth embodiment of the present application, the same or similar contents as those in the third embodiment can refer to the above description, and will not be repeated in the following. Figure 4 , Figure 4 1 is a flow chart of a fourth embodiment of a control method for boosting DCDC of the present application.

[0085] In this embodiment, the step S521 includes steps S531 to S532;

[0086] S531: Obtain the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery, and the chargeable power of the power battery.

[0087] S532: Determine whether the efficiency of the boost DCDC is within a preset efficiency range according to the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery, and the chargeable power of the power battery.

[0088] It should be noted that the solar panel may be a crystalline silicon solar panel, a thin-film solar panel, or other types of solar panels, which is not limited in this embodiment.

[0089] It can be understood that the efficiency of the boost DCDC is determined by the efficiency of the input end of the boost DCDC and the efficiency of the output end of the boost DCDC.

[0090] It can be understood that the input efficiency of the boost DCDC is determined by the output power of the solar panel and the dischargeable power of the photovoltaic energy storage battery.

[0091] It can be understood that the output power of the solar panel can be obtained through MPPT.

[0092] It can be understood that the dischargeable power of the photovoltaic energy storage battery can be obtained by looking up the SOC and temperature of the photovoltaic energy storage battery.

[0093] It can be understood that when the sum of the output power of the solar panel and the dischargeable power of the photovoltaic energy storage battery is within a preset power range, it can be determined that the input efficiency of the boost DCDC is within a high efficiency range.

[0094] It can be understood that when the chargeable power of the power battery is in a preset power range, it can be determined that the input efficiency of the boost DCDC is in a high efficiency range.

[0095] It can be understood that when the input-end efficiency of the boost DCDC and the output-end efficiency of the boost DCDC are both in the high-efficiency range, it can be determined that the boost DCDC is in the high-efficiency range.

[0096] In this embodiment, when the sum of the output power of the solar panel and the dischargeable power of the photovoltaic energy storage battery is greater than 600W and less than 1000W, it can be determined that the input-end efficiency of the boost DCDC is in a high-efficiency efficiency range; when the chargeable power of the power battery is greater than 600W and less than 1000W, it can be determined that the input-end efficiency of the boost DCDC is in a high-efficiency efficiency range; when both the input-end efficiency of the boost DCDC and the output-end efficiency of the boost DCDC are in a high-efficiency efficiency range, it can be determined that the boost DCDC is in a high-efficiency efficiency range.

[0097] In specific implementation, the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery and the chargeable power of the power battery are obtained; according to the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery and the chargeable power of the power battery, it is determined whether the efficiency of the boost DCDC is within the preset efficiency range.

[0098] Based on the fourth embodiment of the present application, in the fifth embodiment of the present application, the same or similar contents as those in the fourth embodiment can refer to the above description, and will not be repeated in the following. Figure 5 , Figure 5 1 is a flow chart of a fifth embodiment of a control method for boosting DCDC of the present application.

[0099] In this embodiment, the step S50 further includes steps S60 to S80;

[0100] S60: Acquire the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity.

[0101] S70: Selecting a working mode according to the electric energy that can be collected within a preset time in the future, the current photovoltaic energy storage battery power, and the current remaining photovoltaic energy storage battery capacity.

[0102] S80: If the working mode is changed, return to the step of obtaining weather forecast information.

[0103] It is understandable that the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity will change over time. Accordingly, real-time detection is required and the working mode is selected based on the electric energy that can be collected within a preset time in the future, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity, so that the efficiency of the photovoltaic system can maintain efficient operation.

[0104] It is understandable that obtaining weather forecast information needs to be done through the communication network function. If the weather forecast information is continuously obtained, it may cause inconvenience to the user. Therefore, it is set to return to the step of obtaining weather forecast information when the working mode changes.

[0105] In specific implementation, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity are obtained, and the working mode is selected according to the electric energy that can be collected within the future preset time, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity. If the working mode changes, return to the step of obtaining weather forecast information.

[0106] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the control method of the boost DCDC of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0107] The present application also provides a vehicle-mounted photovoltaic system, the vehicle-mounted photovoltaic system comprising:

[0108] Solar panels, MPPT controllers, photovoltaic energy storage batteries and boost DCDC;

[0109] The MPPT controller is connected to the solar panel and the photovoltaic energy storage battery respectively, and the boost DCDC is connected to the photovoltaic energy storage battery and the power battery respectively;

[0110] The solar panel is used to collect solar energy and convert it into electrical energy;

[0111] The MPPT controller is used to optimize the electric energy output by the photovoltaic panel and transmit the optimized electric energy to the photovoltaic energy storage battery;

[0112] The photovoltaic energy storage battery is used to receive and store the electric energy transmitted by the MPPT controller;

[0113] The boost DCDC is used to boost the electric energy stored in the photovoltaic energy storage battery and transmit the boosted electric energy to the power battery.

[0114] The present application provides a vehicle, which can implement the steps of the above-mentioned boost DCDC control method.

[0115] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the control method of the boost DCDC in the above-mentioned embodiment.

[0116] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0117] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0118] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0119] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0120] The readable storage medium provided in the present application is a computer-readable storage medium, and the computer-readable storage medium stores computer-readable program instructions (i.e., a computer program) for executing the above-mentioned boost DCDC control method. The beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the boost DCDC control method provided in the above-mentioned embodiment, and are not repeated here.

[0121] The present application also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, the steps of the control method of the boost DCDC as described above are implemented.

[0122] The beneficial effects of the computer program product provided in the present application are the same as the beneficial effects of the boost DCDC control method provided in the above embodiment, and will not be elaborated here.

[0123] The above description is only for this application and does not limit the patent scope of this application. All equivalent structural changes made based on the concept of this application and the contents of the description and drawings of this application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of this application.

Claims

1. A control method for boost DCDC, characterized in that: The control method of the boost DCDC includes: Get weather forecast information; Estimate the amount of electricity that can be collected within a preset time in the future based on weather forecast information; Obtain the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity; Selecting a working mode according to the electric energy that can be collected within a preset time in the future, the current power of the photovoltaic energy storage battery and the current remaining capacity of the photovoltaic energy storage battery, wherein the working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode; According to the working mode, the boost DCDC is controlled to output the energy in the photovoltaic energy storage battery to the power battery.

2. The control method of boost DCDC as claimed in claim 1, characterized in that: The step of selecting a working mode according to the electric energy that can be collected within a preset time in the future, the power of the photovoltaic energy storage battery and the remaining capacity of the photovoltaic energy storage battery, wherein the working mode includes a forced power replenishment mode and a power replenishment efficiency priority mode, specifically includes: When the power of the photovoltaic energy storage battery is greater than the preset power of the photovoltaic energy storage battery, select the forced power replenishment mode; When the power of the photovoltaic energy storage battery is less than or equal to the preset power of the photovoltaic energy storage battery, the remaining photovoltaic energy storage battery capacity is compared with the electric energy that can be collected within the future preset time; If the electric energy that can be collected within the preset time in the future is greater than the remaining photovoltaic energy storage battery capacity, the forced charging mode is selected, otherwise, the charging efficiency priority mode is selected.

3. The control method of boost DCDC as claimed in claim 1, characterized in that: The step of controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery includes: When forced power replenishment is selected, the boost DCDC is directly controlled to output the energy in the photovoltaic energy storage battery to the power battery.

4. The control method of boost DCDC as claimed in claim 1, characterized in that: The step of controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery includes: When the charging efficiency priority mode is selected, the efficiency of the boost DCDC is detected, and it is determined whether the efficiency of the boost DCDC is within the preset efficiency range; If the efficiency of the boost DCDC is within a preset efficiency range, the boost DCDC is controlled to operate; If the efficiency of the boost DCDC is not within the preset efficiency range, the boost DCDC operation is stopped and a preset waiting time is waited until the efficiency of the boost DCDC is within the preset efficiency range.

5. The control method of boost DCDC as claimed in claim 4, characterized in that: The step of detecting the efficiency of the boost DCDC and determining whether the efficiency of the boost DCDC is within a preset efficiency range specifically includes: Obtain the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery and the chargeable power of the power battery; The efficiency of the boost DCDC is determined based on the output power of the solar panel, the dischargeable power of the photovoltaic energy storage battery, and the chargeable power of the power battery to determine whether it is within the preset efficiency range.

6. The control method of boost DCDC as claimed in claim 1, characterized in that: After the step of controlling the boost DCDC according to the working mode to output the energy in the photovoltaic energy storage battery to the power battery, the following step is further included: Obtain the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity; Select the working mode according to the electric energy that can be collected within the preset time in the future, the current photovoltaic energy storage battery power and the current remaining photovoltaic energy storage battery capacity; If the working mode is changed, return to the step of obtaining weather forecast information.

7. A vehicle-mounted photovoltaic system, characterized in that: The vehicle-mounted photovoltaic system comprises: Solar panels, MPPT controllers, photovoltaic energy storage batteries and boost DCDC; The MPPT controller is connected to the solar panel and the photovoltaic energy storage battery respectively, and the boost DCDC is connected to the photovoltaic energy storage battery and the power battery respectively; The solar panel is used to collect solar energy and convert it into electrical energy; The MPPT controller is used to optimize the electric energy output by the photovoltaic panel and transmit the optimized electric energy to the photovoltaic energy storage battery; The photovoltaic energy storage battery is used to receive and store the electric energy transmitted by the MPPT controller; The boost DCDC is used to boost the electric energy stored in the photovoltaic energy storage battery and transmit the boosted electric energy to the power battery.

8. A vehicle, characterized in that: The vehicle can implement the steps of the boost DCDC control method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the boost DCDC control method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the control method of the boost DCDC according to any one of claims 1 to 6 are implemented.

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