CN219833822U - Photovoltaic charging system - Google Patents

Abstract

The utility model provides a photovoltaic charging system. The charging system includes: the input end is used for being connected with the photovoltaic module to receive electric energy input by the photovoltaic module; the output end is used for being connected with the vehicle-mounted charger; the input end of the photovoltaic module controller is connected with the input end of the photovoltaic system; the input end of the inverter is connected with the photovoltaic module controller, the output end of the inverter is connected with the output end of the photovoltaic system, and the inverter is used for converting direct current input by the photovoltaic module into alternating current; a switch connected between the inverter and an output of the charging system; the main control board is provided with a first communication assembly, a second communication assembly and a control assembly, wherein the first communication assembly is connected with the photovoltaic assembly controller, the second communication assembly is used for being connected with the whole vehicle controller, and the control assembly is connected with the switch. The charging system can be used for transmitting the electric energy output by the vehicle-mounted photovoltaic module to the vehicle-mounted charger, so as to charge the vehicle power battery, and the endurance mileage of the vehicle is improved.

Description

Photovoltaic charging system

Technical Field

The utility model mainly relates to the technical field of vehicles, in particular to a photovoltaic charging system.

Background

In the context of global warming, numerous countries make carbon neutralization commitments and develop actions. Automotive electrodynamic technology is an important measure for achieving carbon neutralization. In addition, with the strong support of the country to the new energy automobile, the new energy automobile industry is rapidly developing.

At present, new energy automobiles have been developed very well, but some problems which plague users, especially the endurance mileage, still exist. Due to the maturity of the photovoltaic power generation technology, the photovoltaic power generation technology is installed on a new energy automobile, and the endurance mileage of the automobile can be remarkably improved. However, the existing vehicle-mounted photovoltaic power generation system is mainly applied to a traditional fuel oil vehicle, and is also used for supplying power to a vehicle-mounted low-voltage device, such as a vehicle-mounted entertainment system, illumination and a low-voltage storage battery, and cannot supply power to a vehicle-mounted charger, so that power battery of the vehicle cannot be supplied with power.

Therefore, how to transmit the electric energy output by the vehicle-mounted photovoltaic module to the vehicle-mounted charger is a problem to be solved urgently.

Disclosure of Invention

The utility model aims to provide a photovoltaic charging system which can be used for transmitting electric energy output by a vehicle-mounted photovoltaic module to a vehicle-mounted charger.

The technical scheme adopted by the utility model for solving the technical problems is a photovoltaic charging system, comprising: the input end is used for being connected with the photovoltaic module to receive electric energy input by the photovoltaic module; the output end is used for being connected with the vehicle-mounted charger; the input end of the photovoltaic module controller is connected with the input end of the photovoltaic system, and the photovoltaic module controller is used for judging whether the power supply information of the photovoltaic module meets preset power supply information or not; the input end of the inverter is connected with the photovoltaic module controller, the output end of the inverter is connected with the output end of the photovoltaic system, and the inverter is used for converting direct current input by the photovoltaic module into alternating current; a switch connected between the inverter and an output of the charging system; the main control board is provided with a first communication assembly, a second communication assembly and a control assembly, wherein the first communication assembly is connected with the photovoltaic assembly controller, the second communication assembly is used for being connected with the whole vehicle controller, and the control assembly is connected with the switch.

In an embodiment of the utility model, the main control board is further used for controlling the alarm device to send out an alarm when the power supply information of the photovoltaic module does not meet the preset power supply information.

In an embodiment of the utility model, the photovoltaic module controller is further configured to determine whether the power supply information of the photovoltaic module meets preset power supply information according to a preset frequency, and send the determination result to the main control board, where if the determination result is negative, the main control board disconnects the input end from the photovoltaic module.

In an embodiment of the utility model, the photovoltaic module controller is further configured to measure an electric quantity of the electric energy input by the photovoltaic module.

In an embodiment of the utility model, a fuse is further included and connected between the input end of the charging system and the photovoltaic module controller.

In an embodiment of the present utility model, the photovoltaic module further includes a first filtering unit and/or a second filtering unit, where the first filtering unit is connected between the input end of the charging system and the photovoltaic module controller, and the second filtering unit is connected between the output end of the charging system and the inverter.

In an embodiment of the utility model, a circuit breaker is further included, and the circuit breaker is connected between the output end of the photovoltaic system and the second filtering unit.

In one embodiment of the utility model, the photovoltaic controller further comprises a temperature sensor, wherein the temperature sensor is connected with the photovoltaic controller.

In an embodiment of the present utility model, the main control board has a communication interface, and the communication interface is used for being connected with a vehicle controller.

In one embodiment of the present utility model, the vehicle-mounted charger is used for charging a power battery of a vehicle.

The photovoltaic charging system can convey direct current input by the photovoltaic module to the vehicle-mounted charger, and further power is supplied to the power battery of the vehicle.

Drawings

In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below, wherein:

FIG. 1 is a system block diagram of a photovoltaic charging system according to an embodiment of the present utility model;

fig. 2 is an exemplary flow chart of a photovoltaic charging method according to an embodiment of the present utility model.

Reference numerals

Input 110 switches 181, 182, 183, 184

The output 120 is a first filter unit 190

Inverter 210 of photovoltaic module controller 130

Second filtering unit 220 of main control board 140

Photovoltaic module 150 breaker 230

Temperature sensor 240 of vehicle-mounted charger 160

Fuse 170 indicator 250

Detailed Description

In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways than as described herein, and therefore the present utility model is not limited to the specific embodiments disclosed below.

As used in the specification and in the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model. Furthermore, although terms used in the present utility model are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present utility model is understood, not simply by the actual terms used but by the meaning of each term lying within.

A flowchart is used in the present utility model to describe the operations performed by a system according to embodiments of the present utility model. It should be understood that the preceding or following operations are not necessarily performed in order precisely. Rather, the various steps may be processed in reverse order or simultaneously. At the same time, other operations are added to or removed from these processes.

The charging system of the present utility model will be described by way of specific examples.

Fig. 1 is a system block diagram of a photovoltaic charging system according to an embodiment of the present utility model. Referring to fig. 1, the charging system 100 includes an input terminal 110, an output terminal 120, a photovoltaic module controller 130, and a main control board 140. The input end 110 is connected to the photovoltaic module 150 to receive electric energy input by the photovoltaic module 150, the output end 120 is connected to an On Board Charger (OBC) 160, and a connection for transmitting electric energy is provided between the On Board Charger 160 and a power battery (not shown) of the vehicle. The on-board charger 160 is used to power a power battery, which may be one or more batteries, used to provide electrical power to the power components of the vehicle. The photovoltaic module controller 130 may sample the current and the voltage input to the photovoltaic module 150, and determine whether the power supply information of the photovoltaic module 150 satisfies the preset power supply information based on the sampled data. The main control board 140 is communicatively connected to the photovoltaic module controller 130, and is capable of receiving the information including the above determination result sent by the photovoltaic module controller 130, and executing charging detection to determine whether the vehicle is allowed to be charged, and if the determination result of the charging detection is yes, controlling the charging system 100 to transmit the electric energy input by the photovoltaic module 150 to the vehicle-mounted charger 160. Additional details regarding the charging system of the present utility model will be described below and will not be further described herein.

Fig. 2 is an exemplary flow chart of a photovoltaic charging method according to an embodiment of the present utility model. Referring to fig. 1, the charging method of this embodiment includes the steps of:

step S310: judging whether the power supply information of the photovoltaic module meets preset power supply information or not;

step S320: and if the judgment result is yes, executing charging detection to judge whether the vehicle is allowed to charge, and if the judgment result is yes, transmitting the electric energy input by the photovoltaic module to the vehicle-mounted charger.

The charging system of the present utility model is further described below with reference to step S310 and step S320.

As shown in connection with fig. 1 and 2, the photovoltaic module 150 is connected to the input 110 of the charging system 100, and the input of the photovoltaic module controller 130 is connected to the input 110 of the charging system 100. In step S310, the photovoltaic module controller 130 samples the current and the voltage input to the charging system 100 through the input terminal 110 by the photovoltaic module 150 to obtain the power supply information of the photovoltaic module 150, and determines whether the power supply information satisfies the preset power supply information. In some embodiments, the power supply information includes a magnitude of an input current and/or a magnitude of an input voltage of the photovoltaic module 150, and the preset power supply information includes the magnitude of the input current meeting a preset current requirement and/or the magnitude of the input voltage meeting a preset voltage requirement. The charging system 100 (e.g., the photovoltaic module controller 130 in the charging system) can be prevented from being damaged by determining whether the power supply information of the photovoltaic module satisfies the preset power supply information. For example, when the input current of the photovoltaic module 150 is over-current, and the input voltage is over-voltage or under-voltage, the photovoltaic module controller 130 can learn whether the power supply information of the photovoltaic module 150 meets the requirement of the preset power supply information by sampling and judging the information obtained by sampling.

For an existing vehicle-mounted photovoltaic charging system capable of supplying power to a low-voltage device in a vehicle, the charging system 100 of the utility model can follow the photovoltaic module controller 130 in the existing charging system, and upgrade and reform the existing charging system on the basis of the photovoltaic module controller to realize the technical effects in the utility model.

Referring to fig. 1, in an embodiment, a fuse 170 is connected between the input terminal 110 and the photovoltaic module controller 130, and the fuse 170 has a short-circuit protection function and an overcurrent protection function. In this way, the charging system 100 can be prevented from being damaged. In addition, a switch 181 and a switch 182 are connected to two wires connecting the input terminal 110 and the photovoltaic module controller 130, respectively. The switch 181 and the switch 182 are each capable of controlling the on and off between the photovoltaic module 150 and the input terminal 110. Compared with the arrangement of a switch (for example, the switch 181 or the switch 182), the arrangement of the switch on both leads ensures that when any lead fails, the connection between the photovoltaic module 150 and the input end 110 can be disconnected in time so as to reduce the damage of the failure to the charging system as much as possible. In some embodiments, the control methods for switch 181 and switch 182 are implemented as follows: as shown by two broken lines connecting the switch 181 and the main control board 140 and the switch 182 and the main control board 140 in fig. 1, the main control board 140 is respectively in communication connection with the photovoltaic module controller 130, the switch 181 and the switch 182, the photovoltaic module controller 130 sends the judgment result to the main control board 140, and the main control board 140 controls the switch 181 and the switch 182 to be turned on and off according to the received judgment result. The photovoltaic module controller 130 can determine whether the power supply information of the photovoltaic module 150 meets the preset power supply information according to the preset frequency, and if not, the main control board 140 controls the switch 181 and/or the switch 182 to be turned off to disconnect the power supply of the photovoltaic module 150. It will be appreciated that the preset frequency may be set as desired.

In one embodiment, the main control board 140 has a first communication component and a control component, the first communication component of the main control board 140 is connected with the photovoltaic module controller, and the control component is connected with the switch 181 and the switch 182.

In an embodiment, the charging system 100 further comprises a first filtering unit 190 connected between the input 110 and the photovoltaic module controller 130. The current input into the charging system 100 by the photovoltaic module 150 may carry ripple, which may generate harmonics in the electrical appliance, thereby reducing the efficiency of the electrical appliance in inputting electrical energy to the photovoltaic module 150. The first filtering unit 190 can filter out the ripple in the current, so as to avoid the reduction of the use efficiency of the input electric energy to the photovoltaic module 150.

The photovoltaic module controller 130 has a maximum power point tracking function for power input to the photovoltaic module 150. Specifically, the photovoltaic module controller 130 can regulate the current and/or voltage input to the charging system 100 by the photovoltaic module 150, so that the photovoltaic module 150 outputs electric energy according to the maximum power. In some embodiments, the photovoltaic module controller 130 further has a function of measuring electric energy input by the photovoltaic module 150, and transmits the electric energy measurement information to the main control board 140, the main control board 140 has a communication interface, the main control board 140 may transmit the electric energy measurement information to the VCU through a controller area network (Controller Area Network, CAN) between the communication interface and the vehicle controller (Vehicle Control Unit, VCU), and the VCU may inform the passenger of the electric energy measurement information through the vehicle-mounted interactive interface. Thus, the power generation amount of the photovoltaic module is beneficial to passengers to grasp. In some embodiments, the main control board 140 has a second communication component for connecting with the VCU.

In step S320, if the photovoltaic module controller 130 determines that the power supply information of the photovoltaic module 150 meets the preset power supply information, the main control board 140 performs charging detection to determine whether the vehicle is allowed to be charged. Specifically, as described above, the main control board 140 is connected with the VCU through the CAN, and the occupant CAN send an instruction to the VCU through the vehicle-mounted interaction interface to set conditions such as time and scene for allowing the vehicle to charge. For example, an occupant may be provided not to allow the photovoltaic module 150 to charge the power battery while washing. Then, the main control board 140 CAN communicate with the VCU through the CAN to determine whether the power battery of the vehicle is allowed to be charged, if it is determined that the current vehicle is allowed to be charged, the charging system 100 transmits the electric energy input by the photovoltaic module 150 to the vehicle-mounted charger 160, and the vehicle-mounted charger 160 charges the power battery of the vehicle.

Referring to fig. 1, in an embodiment, the charging system 100 further includes an inverter 210, and the inverter 210 may be implemented as a direct current-alternating current inverter 210 (DC-AC inverter). An input terminal of the inverter 210 is connected to an output terminal of the photovoltaic module controller 130, and an output terminal of the inverter 210 is connected to an output terminal 120 of the charging system 100. It should be noted that "the output terminal of the inverter 210 is connected to the output terminal 120 of the charging system 100" does not mean that only the output terminal of the inverter 210 is directly connected to the output terminal 120 of the charging system, but other devices may be connected between the output terminal of the inverter 210 and the output terminal 120 of the charging system, which will be described later, and will not be further described herein.

The inverter 210 is capable of converting the received direct current into alternating current and regulating the voltage to a high voltage that can be used to charge the power battery by the in-vehicle charger 160. Wherein the voltage of the high voltage power supply comprises any value of 220V-380V. The charging system 100 of the present utility model can convert the direct current input from the photovoltaic module 150 into the high voltage alternating current for charging the vehicle power battery, so that the endurance mileage of the vehicle can be improved. In some embodiments, the main control board 140 is connected to the wires at the output end of the inverter 210 (as shown by the dashed line a in fig. 1), so the main control board 140 can sample the current and the voltage output by the inverter 210 to determine whether the current and the voltage output by the inverter 210 meet the charging requirement.

With continued reference to fig. 1, in an embodiment, a second filtering unit 220 is connected between the output terminal 120 and the inverter 210, and the second filtering unit 220 can perform filtering processing on the ac power output by the inverter 210. In some embodiments, a switch 183 and a switch 184 are also connected between the second filtering unit 220 and the output 120. As shown by two broken lines connecting the switch 183 and the main control board 140 and the switch 184 and the main control board 140 in fig. 1, the switch 183 and the switch 184 are respectively connected with the main control board 140 in a communication manner, and the main control board 140 can know the states of the switch 183 and the switch 184 and control the opening and closing of the switch 183 and the switch 184 through the communication connection. If the photovoltaic module controller 130 determines that the power supply information of the photovoltaic module 150 does not meet the preset power supply information, or the main control board 140 performs charging detection and determines that the vehicle is not allowed to be charged, the main control board 140 may also control the switch 183 and/or the switch 184 to be turned off to disconnect the photovoltaic module 150 from the vehicle-mounted charger 160. In some embodiments, master board 140 is coupled to switches 183 and 184 via a control assembly that controls the opening and closing of switches 183 and 184.

In an embodiment, a circuit breaker 230 is further connected between the output terminal 120 and the second filter unit 220, and the circuit breaker 230 has overvoltage protection, undervoltage protection, overcurrent protection and short-circuit protection functions, and when the above-mentioned fault occurs, the circuit breaker 230 trips to protect the charging system. Preferably, the circuit breaker 230 is located between the switches (183 and 184) and the output 120, so that the circuit breaker 230 is prevented from being damaged.

In an embodiment, as shown in fig. 1, the charging system 100 further includes a temperature sensor 240, the temperature sensor 240 is connected to the photovoltaic module controller 130, the photovoltaic module controller 130 can send temperature information sensed by the temperature sensor 240 to the main control board 140, the main control board 140 determines whether the temperature of the charging system 100 exceeds a set threshold based on the received temperature information, and if the temperature exceeds the set threshold, the main control board 140 stops the charging system 100 to perform temperature protection on the charging system 100. In other embodiments, the photovoltaic module controller 130 is further configured to meter the electric energy input by the photovoltaic module 150, and send the electric energy metering information to the main control board 140, and the main control board 140 further transmits the electric energy metering information to the VCU, and the VCU may inform the passenger of the electric energy metering information of the photovoltaic module 150 through the interactive interface.

In an embodiment, the main control board 140 is further configured to control the alarm device to issue an alarm when the power supply information of the photovoltaic module 150 does not satisfy the preset power supply information. As shown in fig. 1, the alarm device includes an indicator light 250, and the indicator light 250 is capable of indicating one or more of an operating state, a fault state, and a standby state.

The charging system in the embodiment can convey direct current input by the photovoltaic module to the vehicle-mounted charger, so that power is supplied to the power battery of the vehicle, and the endurance mileage of the vehicle is improved.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing application disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements and adaptations of the utility model may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within the present disclosure, and therefore, such modifications, improvements, and adaptations are intended to be within the spirit and scope of the exemplary embodiments of the present disclosure.

Meanwhile, the present utility model uses specific words to describe embodiments of the present utility model. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the utility model. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the utility model may be combined as suitable.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations in some embodiments for use in determining the breadth of the range, in particular embodiments, the numerical values set forth herein are as precisely as possible.

Claims (10)

1. A photovoltaic charging system, comprising:

the input end is used for being connected with the photovoltaic module to receive electric energy input by the photovoltaic module;

the output end is used for being connected with the vehicle-mounted charger;

the input end of the photovoltaic module controller is connected with the input end of the charging system, and the photovoltaic module controller is used for judging whether the power supply information of the photovoltaic module meets preset power supply information or not;

the input end of the inverter is connected with the photovoltaic module controller, the output end of the inverter is connected with the output end of the charging system, and the inverter is used for converting direct current input by the photovoltaic module into alternating current;

a switch connected between the inverter and an output of the charging system;

the main control board is provided with a first communication assembly, a second communication assembly and a control assembly, wherein the first communication assembly is connected with the photovoltaic assembly controller, the second communication assembly is used for being connected with the whole vehicle controller, and the control assembly is connected with the switch.

2. The charging system of claim 1, wherein the main control board is further configured to control the alarm device to issue an alarm when the power supply information of the photovoltaic module does not satisfy the preset power supply information.

3. The charging system of claim 1, wherein the photovoltaic module controller is further configured to determine, according to a preset frequency, whether the power supply information of the photovoltaic module meets the preset power supply information, and send a determination result to the main control board, where if the determination result is negative, the main control board disconnects the input end from the photovoltaic module.

4. The charging system of claim 1, wherein the photovoltaic module controller is further configured to meter electrical energy input by the photovoltaic module.

5. The charging system of claim 1, further comprising a fuse connected between an input of the charging system and the photovoltaic module controller.

6. The charging system of claim 5, further comprising a first filter unit connected between an input of the charging system and the photovoltaic module controller and/or a second filter unit connected between an output of the charging system and the inverter.

7. The charging system of claim 6, further comprising a circuit breaker connected between an output of the charging system and the second filtering unit.

8. The charging system of claim 1, further comprising a temperature sensor coupled to the photovoltaic module controller.

9. The charging system of claim 1, wherein the main control board has a communication interface for connection with a vehicle controller.

10. The charging system of claim 1, wherein the on-board charger is configured to charge a power battery of a vehicle.