Flexible charging system integrating solar panel and vehicle body curved surface

Abstract

The utility model relates to a flexible charging system integrating a solar panel and a vehicle body curved surface, which is applied to the technical field of electric caravan, and is characterized in that a flexible CIGS thin-film solar cell is arranged on the outer surface of the top of an electric vehicle and is flexibly attached to the ceiling of the vehicle body of the electric vehicle, so that the coverage area can be obviously increased; cracking cannot be caused by vibration, temperature change and mechanical stress of the electric vehicle; meanwhile, the generated electric quantity of the flexible CIGS thin-film solar cell is stored through the solar cache standby battery pack, and then the electric vehicle power battery pack is charged through the solar cache standby battery pack; the controller obtains the electric quantity of the solar cache standby battery pack and the electric vehicle power battery pack through the communication interface and controls the on-off state of the output interface of the solar cache standby battery pack according to the electric quantity of the solar cache standby battery pack and the electric vehicle power battery pack, efficient management of batteries is achieved, and the energy utilization efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric car technology field, concretely relates to flexible charging system of solar panel and car body curved surface integration. BACKGROUND

[0002] With the improvement of environmental awareness and the transformation of energy structure, electric car gradually becomes the important tool of people's daily travel.

[0003] And the traditional solar charging technology has the following problems in vehicle integration: rigid restriction, traditional solar panel cannot be attached to the complex curved surface of the vehicle, needs to be installed in plane, leads to limited coverage area, efficiency and durability, vehicle vibration, temperature change and mechanical stress easily lead to solar panel cracking, reduces efficiency, extensive energy management, does not combine the dynamic use scene optimization charging and discharging strategy of vehicle. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing flexible charging system of solar panel and car body curved surface integration to solve the problems in the prior art that traditional solar panel cannot be attached to the complex curved surface of the vehicle, needs to be installed in plane, leads to limited coverage area, efficiency and durability, vehicle vibration, temperature change and mechanical stress easily lead to solar panel cracking, reduces efficiency, extensive energy management.

[0005] The utility model provides flexible charging system of solar panel and car body curved surface integration, the system includes:

[0006] Flexible CIGS thin film solar cell is arranged at the outer surface of the top of electric vehicle, and is flexibly attached to the car body top of electric vehicle, and is used for absorbing solar energy and generating electricity;

[0007] Solar energy storage backup battery pack: for storing the power generation of the flexible CIGS thin film solar cell;The solar energy storage backup battery pack is also used for charging the power battery pack of electric vehicle;

[0008] Electric vehicle power battery pack: for providing electric energy for electric vehicle electric equipment;

[0009] Controller: for obtaining the electric quantity of solar energy storage backup battery pack and electric vehicle power battery pack through communication interface, and controlling the on-off of the output interface of solar energy storage backup battery pack according to the electric quantity of solar energy storage backup battery pack and electric vehicle power battery pack.

[0010] Preferably,

[0011] The electric vehicle power battery pack further includes an external charging interface.

[0012] Preferably,

[0013] The controller is further configured to control the on-off of the external charging interface according to the electric quantity of the solar energy storage backup battery pack and the electric vehicle power battery pack.

[0014] Preferably, the controller is further configured to:

[0015] The energy conversion and voltage boosting control module is configured to convert the output voltage of the solar energy storage backup battery pack to a fixed voltage for charging the electric vehicle power battery pack.

[0016] Preferably, the controller is further configured to:

[0017] The controller is preconfigured with a first electric quantity threshold value of the solar energy storage backup battery pack, a second electric quantity threshold value of the solar energy storage backup battery pack, and a third electric quantity threshold value of the solar energy storage backup battery pack; the first electric quantity threshold value of the solar energy storage backup battery pack is greater than the third electric quantity threshold value of the solar energy storage backup battery pack, and the third electric quantity threshold value of the solar energy storage backup battery pack is greater than the second electric quantity threshold value of the solar energy storage backup battery pack.

[0018] The controller is further preconfigured with a first electric quantity threshold value of the electric vehicle power battery pack.

[0019] Preferably, the controller is further configured to:

[0020] The controller controls the on-off of the output interface of the solar energy storage backup battery pack according to the electric quantity of the solar energy storage backup battery pack and the electric vehicle power battery pack, including:

[0021] The controller compares the received electric quantity of the solar energy storage backup battery pack and the electric vehicle power battery pack with the preconfigured electric quantity threshold value, and controls the on-off of the output interface of the solar energy storage backup battery pack according to the comparison result.

[0022] Preferably, the controller is further configured to:

[0023] The controller controls the on-off of the external charging interface according to the electric quantity of the solar energy storage backup battery pack and the electric vehicle power battery pack, including:

[0024] After the controller receives the charging signal of the external charging interface, the controller controls the external charging interface to be disconnected, and the controller further controls the output interface of the solar energy storage backup battery pack to be turned on, so as to charge the electric vehicle power battery pack by the solar energy storage backup battery pack.

[0025] When the controller receives that the power of the solar energy storage backup battery pack is lower than the preset third power threshold of the solar energy storage backup battery pack, the controller controls the output interface of the solar energy storage backup battery pack to be disconnected, and the controller also controls the external charging interface to be turned on, so that the electric vehicle power battery pack is charged by the external power supply.

[0026] The technical scheme provided by the embodiment of the utility model can have the following beneficial effects:

[0027] The flexible CIGS thin film solar cell is arranged on the top outer surface of the electric vehicle and is flexibly attached to the roof of the vehicle body, so that the coverage area is significantly increased, and the vibration, temperature change and mechanical stress of the electric vehicle cannot cause cracking due to the flexible attachment; meanwhile, the power generated by the flexible CIGS thin film solar cell is stored in the solar energy storage backup battery pack, and the solar energy storage backup battery pack is used to charge the electric vehicle power battery pack; the controller obtains the power of the solar energy storage backup battery pack and the electric vehicle power battery pack through the communication interface, and controls the on-off of the output interface of the solar energy storage backup battery pack according to the power of the solar energy storage backup battery pack and the electric vehicle power battery pack, so that efficient management of the battery is realized and the energy utilization efficiency is improved.

[0028] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application.

[0030] Figure 1 is the overall system schematic diagram of the flexible charging system in which the solar panel and the vehicle body curved surface are integrated, according to an exemplary embodiment;

[0031] Figure 2 is the schematic diagram of the flexible CIGS thin film solar cell installed on the electric vehicle, according to another exemplary embodiment;

[0032] In the drawings: 1-flexible CIGS thin film solar cell, 2-solar energy storage backup battery pack, 3-electric vehicle power battery pack, 4-controller, 5-external charging interface, 6-energy conversion and voltage boosting control module. DETAILED DESCRIPTION

[0033] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to various alternative designs and embodiments of the present application. It is to be understood that the description of the exemplary embodiments is not intended to limit the scope of the present application. Rather, the description of the exemplary embodiments is intended to explain the principles of the present application. The scope of the present application is limited only by the claims and the equivalents thereof.

[0034] Embodiment One

[0035] Figure 1 is a schematic diagram of the overall system of a flexible charging system integrating solar panels with the curved surface of a vehicle body according to an exemplary embodiment, the system comprising:

[0036] a flexible CIGS thin-film solar cell 1 disposed on the outer surface of the top of the electric vehicle and flexibly attached to the roof of the vehicle body, for absorbing solar energy and generating electricity;

[0037] a solar energy storage backup battery pack 2 for storing the electricity generated by the flexible CIGS thin-film solar cell 1; the solar energy storage backup battery pack 2 is also used to charge the electric vehicle power battery pack 3;

[0038] an electric vehicle power battery pack 3 for providing electrical energy to the electrical equipment of the electric vehicle;

[0039] a controller 4 for obtaining the electricity of the solar energy storage backup battery pack 2 and the electric vehicle power battery pack 3 through a communication interface, and controlling the on-off of the output interface of the solar energy storage backup battery pack 2 according to the electricity of the solar energy storage backup battery pack 2 and the electric vehicle power battery pack 3;

[0040] It can be understood that, as shown in the attached drawings, Figure 2As shown, the application uses a flexible CIGS thin film solar cell 1 as a solar energy absorption device for an electric convertible, which is arranged on the outer surface of the top of the electric vehicle and is flexibly attached to the top of the body of the electric vehicle. It can significantly increase the coverage area, and due to the flexible attachment, the vibration, temperature change and mechanical stress of the electric vehicle will not cause cracking. The flexible CIGS thin film solar cell 1 can absorb a wide range of spectral wavelengths. In addition to the visible light spectrum range that can be absorbed by crystalline silicon and amorphous silicon solar cells, it can also cover the infrared light region with a wavelength of 700-1200 nm, i.e. the longest time for power generation within a day. Compared with the same wattage level of crystalline silicon solar cells, the CIGS thin film solar cell can exceed 20% of the total power generation per day. Due to the nature of the crystalline silicon cell, its power generation efficiency will gradually decrease after long-term exposure to sunlight. However, the CIGS solar cell does not have the light-induced decay characteristic and has high power generation stability. After a long period of power generation, the crystalline silicon solar cell has a hot spot phenomenon to a certain extent, resulting in a small power generation and increasing maintenance costs. The CIGS solar cell can use an internal connection structure to avoid this phenomenon and has lower maintenance costs than the crystalline silicon solar cell. The main cost of the CIGS solar cell is the glass substrate and Cu (copper), In (indium), Ga (gallium), and Se (selenium) four elements. The glass only needs to use sodium glass commonly used in building materials, and does not need to use special super-white glass or thin film conductive glass for solar energy. The four metal elements are not precious metals, and the required film thickness of the CIGS absorption layer of each cell panel is not more than 3 μm (microns). The demand for raw materials is not high, and the cost of each piece is very competitive. Solar cells are a good renewable energy technology that can solve the problem of human energy demand without polluting the environment. However, the production of solar cells itself also consumes a certain amount of energy. To evaluate whether a renewable energy device is truly environmentally friendly, in addition to conversion efficiency, it is more important to use the renewable energy generated by the device. How long does it take to equal the total amount of energy consumed when it was first produced, i.e. the so-called energy recovery period. The recovery period of a crystalline silicon solar cell is 2-4 years, while that of a thin film solar cell is 1-2 years. In other words, each solar power generation system can enjoy a truly pollution-free period of 26-29 years, and the use of CIGS solar energy is undoubtedly the best choice. The flexible charging system integrated with the solar panel and the body curve of the vehicle is suitable for installing various types of electric convertibles to achieve efficient energy recovery and energy release.

[0041] Because the solar cell power generation capacity is greatly influenced by light intensity, weather, etc., the power generation stability is poor. In order not to affect the normal use of the electric vehicle, the solar energy storage backup battery group 2 stores the power generation capacity of the flexible CIGS thin film solar cell 1 in real time, and then the controller 4 controls the on-off of the output interface of the solar energy storage backup battery group 2 to determine whether the solar energy storage backup battery group 2 charges the electric vehicle power battery group 3. In short, when the electric vehicle power battery group 3 is insufficient, and the solar energy storage backup battery group 2 has a higher power, the controller 4 controls the solar energy storage backup battery group 2 to output the interface to be turned on, and the solar energy storage backup battery group 2 charges the electric vehicle power battery group 3.

[0042] Preferably,

[0043] The electric vehicle power battery group 3 further comprises an external charging interface 5.

[0044] It can be understood that the electric vehicle power battery group 3 of the present application further comprises an external charging interface 5. When the electric vehicle power battery group 3 is insufficient, and the solar energy storage backup battery group 2 is also insufficient, the external charging interface 5 is used to charge the electric vehicle power battery group 3.

[0045] Preferably,

[0046] The controller 4 is further used to control the on-off of the external charging interface 5 according to the power of the solar energy storage backup battery group 2 and the electric vehicle power battery group 3.

[0047] It can be understood that the external charging interface 5 is only turned on when the electric vehicle power battery group 3 is insufficient, and the solar energy storage backup battery group 2 is also insufficient. It should be noted that the on-off of the external charging interface 5 controlled by the controller 4 is the on-off on the circuit. In short, when the controller 4 controls the external charging interface 5 to be disconnected, even if the charging plug is inserted into the external charging interface 5, the electric vehicle power battery group 3 will not be charged. Only when the charging plug is inserted into the external charging interface 5, and the controller 4 controls the external charging interface 5 to be turned on, the charging plug can charge the electric vehicle power battery group 3.

[0048] Preferably, it further comprises:

[0049] An energy conversion and voltage boosting control module 6 is used to convert the output voltage of the solar energy storage backup battery group 2 to a fixed voltage to charge the electric vehicle power battery group 3.

[0050] It can be understood that the energy conversion boost control module 6 realizes efficient transmission of energy of the solar energy storage backup battery pack 2 to the electric vehicle power battery pack 3 (the whole vehicle power supply system) for use and constant voltage output, and the output voltage is matched according to the whole vehicle battery specifications, usually 20-30V.

[0051] Preferably,

[0052] The controller 4 is pre-set with a first electric quantity threshold of the solar energy storage backup battery pack, a second electric quantity threshold of the solar energy storage backup battery pack and a third electric quantity threshold of the solar energy storage backup battery pack; the first electric quantity threshold of the solar energy storage backup battery pack is greater than the third electric quantity threshold of the solar energy storage backup battery pack, and the third electric quantity threshold of the solar energy storage backup battery pack is greater than the second electric quantity threshold of the solar energy storage backup battery pack;

[0053] The controller 4 is also pre-set with a first electric quantity threshold of the electric vehicle power battery pack;

[0054] It can be understood that in the embodiment, the first electric quantity threshold of the solar energy storage backup battery pack is 60% of the electric quantity, the second electric quantity threshold of the solar energy storage backup battery pack is 30% of the electric quantity, and the third electric quantity threshold of the solar energy storage backup battery pack is 40% of the electric quantity; the first electric quantity threshold of the electric vehicle power battery pack is 90% of the electric quantity.

[0055] Preferably,

[0056] The controller 4 controls the on-off of the output interface of the solar energy storage backup battery pack 2 according to the electric quantity of the solar energy storage backup battery pack 2 and the electric vehicle power battery pack 3, including:

[0057] The controller 4 compares the received electric quantity of the solar energy storage backup battery pack 2 and the electric vehicle power battery pack 3 with the pre-set electric quantity threshold, and controls the on-off of the output interface of the solar energy storage backup battery pack 2 according to the comparison result;

[0058] It can be understood that the controller 4 monitors the solar energy storage backup battery pack 2 in real time, monitors the electric vehicle power battery pack 3, and compares the threshold values, and controls the on-off of the output interface of the solar energy storage backup battery pack 2 according to the comparison result. Specifically, when the solar energy storage backup battery pack 2 is greater than the first solar energy storage backup battery pack threshold (60% of the power), and the electric vehicle power battery pack 3 is less than the first electric vehicle power battery pack threshold (90% of the power), the battery energy conversion is started, and the controller 4 controls the output interface of the solar energy storage backup battery pack 2 to be turned on, and the solar energy storage backup battery pack 2 is used to charge the electric vehicle power battery pack 3; when the solar energy storage backup battery pack 2 is less than the second solar energy storage backup battery pack threshold (30% of the power), the controller 4 controls the output interface of the solar energy storage backup battery pack 2 to be turned off, and the solar energy storage backup battery pack 2 stops charging the electric vehicle power battery pack 3; when the electric vehicle power battery pack 3 is full, the controller 4 controls the output interface of the solar energy storage backup battery pack 2 to be turned off.

[0059] Preferably,

[0060] The controller 4 is also used to control the on-off of the external charging interface 5 according to the electric quantity of the solar energy storage backup battery pack 2 and the electric vehicle power battery pack 3.

[0061] After the controller 4 receives the charging signal of the external charging interface 5, the controller 4 controls the external charging interface 5 to be turned off, and the controller 4 also controls the output interface of the solar energy storage backup battery pack 2 to be turned on, and the solar energy storage backup battery pack 2 is used to charge the electric vehicle power battery pack 3;

[0062] After the controller 4 receives the electric quantity of the solar energy storage backup battery pack 2 which is lower than the third solar energy storage backup battery pack threshold, the controller 4 controls the output interface of the solar energy storage backup battery pack 2 to be turned off, and the controller 4 also controls the external charging interface 5 to be turned on, and the external power source is used to charge the electric vehicle power battery pack 3;

[0063] Understandably, when the electric vehicle's power battery pack 3 needs charging, and the controller 4 detects that a charging plug has been inserted into the external charging interface 5, the controller 4 first controls the external charging interface 5 to disconnect, and then controls the output interface of the solar backup battery pack 2 to turn on. The solar backup battery pack 2 charges the electric vehicle's power battery pack 3 first, until the charge level of the solar backup battery pack 2 is less than the third charge threshold (40% charge). At this point, the controller 4 controls the output interface of the solar backup battery pack 2 to disconnect, and simultaneously controls the external charging interface 5 to turn on. Then, the charging plug inserted into the external charging interface 5 charges the electric vehicle's power battery pack 3. In short, the charging priority of the solar backup battery pack 2 is higher than the charging priority of the external charging interface 5.

[0064] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0065] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means at least two.

[0066] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0067] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0068] Those skilled in the art can understand that all or part of the steps of the method carried out by the above-mentioned embodiments can be instructed by a program to the relevant hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0069] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically independently, or two or more units can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0070] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0071] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. Flexible charging system for integration of solar panels with the body surface of a vehicle, characterized in that, The system comprises: a flexible CIGS thin-film solar cell arranged on the top outer surface of the electric vehicle and flexibly attached to the roof of the vehicle body, for absorbing solar energy and generating electricity; a solar energy storage backup battery pack for storing the generated electricity of the flexible CIGS thin-film solar cell, and for charging the power battery pack of the electric vehicle; a power battery pack of the electric vehicle, for providing electric energy to the electric equipment of the electric vehicle; a controller, for obtaining the electricity of the solar energy storage backup battery pack and the power battery pack of the electric vehicle through a communication interface, and for controlling the on-off of the output interface of the solar energy storage backup battery pack according to the electricity of the solar energy storage backup battery pack and the power battery pack of the electric vehicle.

2. The system according to claim 1, wherein the power battery pack of the electric vehicle further comprises an external charging interface.

3. The system according to claim 2, wherein the controller is further configured to control the on-off of the external charging interface according to the electricity of the solar energy storage backup battery pack and the power battery pack of the electric vehicle.

4. The system of claim 3, wherein, Further comprising: an energy conversion and voltage boosting control module, configured to convert the output voltage of the solar energy storage backup battery pack into a fixed voltage for charging the power battery pack of the electric vehicle.

5. The system according to claim 4, wherein the controller is preconfigured with a first electricity threshold value of the solar energy storage backup battery pack, a second electricity threshold value of the solar energy storage backup battery pack, and a third electricity threshold value of the solar energy storage backup battery pack, wherein the first electricity threshold value of the solar energy storage backup battery pack is greater than the third electricity threshold value of the solar energy storage backup battery pack, and the third electricity threshold value of the solar energy storage backup battery pack is greater than the second electricity threshold value of the solar energy storage backup battery pack; the controller is further preconfigured with a first electricity threshold value of the power battery pack of the electric vehicle.

6. The system according to claim 5, wherein the controller controlling the on-off of the output interface of the solar energy storage backup battery pack according to the electricity of the solar energy storage backup battery pack and the power battery pack of the electric vehicle comprises: the controller comparing the received electricity of the solar energy storage backup battery pack and the power battery pack of the electric vehicle with the preconfigured electricity threshold values, and controlling the on-off of the output interface of the solar energy storage backup battery pack according to the comparison result.

7. The system according to claim 6, wherein the controller controlling the on-off of the external charging interface according to the electricity of the solar energy storage backup battery pack and the power battery pack of the electric vehicle comprises: after receiving a charging signal of the external charging interface, the controller controls the external charging interface to be disconnected, and the controller further controls the output interface of the solar energy storage backup battery pack to be connected, so that the solar energy storage backup battery pack charges the power battery pack of the electric vehicle. When the controller receives that the power of the solar energy storage backup battery pack is lower than a preset third power threshold of the solar energy storage backup battery pack, the controller controls the output interface of the solar energy storage backup battery pack to be disconnected, and the controller also controls the external charging interface to be turned on, so that the electric vehicle power battery pack is charged by an external power supply.

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