CN110649667B - Control method of solar charging device and solar charging device - Google Patents
Control method of solar charging device and solar charging device Download PDFInfo
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Abstract
The invention discloses a control method of a solar charging device and the solar charging device, wherein the method comprises the following steps: detecting working parameters of the current solar charging device, wherein the working parameters comprise: one or more of ambient temperature, power, output current, output voltage; and controlling the solar charging device to work in a working mode corresponding to the working parameters. The invention can enable the solar charging device to meet the charging requirements in various environments.
Description
Technical Field
The present invention relates to solar charging technologies, and in particular, to a method for controlling a solar charging device and a solar charging device.
Background
In recent years, thin-film solar cells have been widely used in the fields of industry, commerce, electronic consumer products, and the like by virtue of their characteristics of lightness, thinness, flexibility, and the like. Common solar electronic products in the market mainly comprise solar beach umbrellas, solar power generation paper, solar backpacks and the like. The portable charging device has the main characteristics that the portable charging device can be used for charging handheld devices such as mobile phones, charging pads and tablet computers, and the requirement of emergency charging of electronic equipment when people go out is met to a certain extent.
The current solar charging device comprises the following main components: solar module, control circuit. The control circuit converts unstable voltage output by the solar cell module into a voltage level required by a charging load, and meanwhile, the control circuit realizes functions of control protection and the like. The quality of a control circuit design directly determines the user experience and the service life of the solar charging device.
The existing solar charging device has the following defects:
1) the solar charging device does not have a temperature-power working curve, when the illumination condition is good and the working environment temperature is high, the output power of the solar charging device is not limited, the working temperature of the solar charging device is easily higher than a set value, the solar charging device is further closed to output, the equipment cannot be continuously charged, and the user experience is poor;
2) the working mode cannot be adjusted according to the current illumination intensity: when the illumination condition is good, the load is charged by large current, so that the load battery is easy to damage, and the service life of the load battery is shortened; when the illumination condition is not good, the output power of the solar charging device is insufficient, and charging is affected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a control method of a solar charging device and the solar charging device, which can enable the solar charging device to meet the charging requirements in various environments.
In order to achieve the object of the present invention, the present invention provides a method for controlling a solar charging apparatus, the method comprising:
detecting working parameters of the current solar charging device, wherein the working parameters comprise: one or more of ambient temperature, power, output current, output voltage;
and controlling the solar charging device to work in a working mode corresponding to the working parameters.
In one embodiment of the present invention, the substrate is,
the working parameters comprise: ambient temperature, output power of the solar module;
the controlling the solar charging device to work in the working mode corresponding to the working parameters comprises:
determining a temperature range to which the current environment temperature belongs from a plurality of set temperature ranges;
when the temperature range is the lowest temperature range and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the solar charging device to work in a normal mode; when the temperature range is not the lowest temperature range and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the solar charging device to work in a limited mode; and in the quota mode, the target value of the output power or the output current of the solar charging device is smaller than the target value of the output power or the output current in the normal mode.
In one embodiment of the present invention, the substrate is,
the solar charging device comprises a plurality of limit modes, wherein different limit modes correspond to different temperature ranges, each limit mode corresponds to the output power or the output current of one solar charging device, the output power or the output current of the solar charging devices in different limit modes are different, and the plurality of limit modes from high to low of the output power or the output current of the solar charging devices correspond to the plurality of temperature ranges from low to high one by one.
In one embodiment of the present invention, the substrate is,
the operating parameters further include: outputting current;
the control solar charging device works under normal mode, or, control solar charging device works under the quota mode, include:
and if the output current of the solar charging device is larger than or equal to the corresponding target value, controlling the solar charging device to operate in a constant current working mode with the output current being the target value.
In one embodiment of the present invention, the substrate is,
control solar charging device works under normal mode, or, control solar charging device works under the quota mode, still include:
and if the output current of the solar charging device is smaller than the corresponding target value, controlling the solar charging device to operate in a constant-voltage working mode with the output voltage being the corresponding voltage target value.
In one embodiment of the present invention, the substrate is,
the working parameters comprise: the output power of the solar cell module;
the controlling the solar charging device to work in the working mode corresponding to the working parameters comprises:
and if the output power of the solar battery pack in the solar charging device is judged to be smaller than the rated output power of the solar charging device, controlling the solar charging device to operate in a maximum power tracking control MPPT (maximum power point tracking) working charging mode.
The embodiment of the invention also provides a solar charging device, which comprises:
the detection circuit is used for detecting the working parameters of the current solar charging device, and the working parameters comprise: one or more of ambient temperature, power, output current, output voltage;
the control circuit is used for controlling the driving circuit to send a driving signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit;
the drive circuit is used for carrying out power drive on the BUCK circuit according to the output signal of the control circuit;
the BUCK circuit is used for adjusting current or voltage or power output to a load according to a driving signal of the driving circuit;
the solar driving battery component is used for converting solar energy into electric energy and outputting the electric energy to the BUCK circuit.
In one embodiment of the present invention, the substrate is,
the working parameters of the current solar charging device detected by the detection circuit comprise: ambient temperature, output power of the solar module;
the control circuit is used for controlling the drive circuit to send out a drive signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit, and comprises:
determining a temperature range to which the current environment temperature belongs from a plurality of set temperature ranges;
when the temperature range is the lowest temperature range and the output power of a solar cell assembly in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling a driving circuit to send a driving signal working in a normal mode to a BUCK circuit; when the temperature range is not the lowest temperature range and the output power of the solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the driving circuit to send a driving signal working in a quota mode to the BUCK circuit; and in the quota mode, the target value of the output power or the output current of the solar charging device is smaller than the target value of the output power or the output current in the normal mode.
In one embodiment of the present invention, the substrate is,
the solar charging device comprises a plurality of limit modes, wherein different limit modes correspond to different temperature ranges, each limit mode corresponds to the output power or the output current of one solar charging device, the output power or the output current of the solar charging devices in different limit modes are different, and the plurality of limit modes from high to low of the output power or the output current of the solar charging devices correspond to the plurality of temperature ranges from low to high one by one.
In one embodiment of the present invention, the substrate is,
the working parameters of the current solar charging device detected by the detection circuit further include: outputting current;
the control circuit controls the driving circuit to send the driving signal working under the normal mode to the BUCK circuit, or controls the driving circuit to send the driving signal working under the quota mode to the BUCK circuit, and the control circuit comprises:
and if the output current of the solar charging device is larger than or equal to the corresponding target value, controlling the driving circuit to send a driving signal which operates in a constant-current working mode with the output current being the target value to the BUCK circuit.
In one embodiment of the present invention, the substrate is,
the control circuit controls the driving circuit to send a driving signal working under a normal mode to the BUCK circuit, or controls the driving circuit to send a driving signal working under a quota mode to the BUCK circuit, and the control circuit further comprises:
and if the output current of the solar charging device is smaller than the corresponding target value, controlling the driving circuit to send a driving signal which operates in a constant-voltage working mode with the output voltage being the corresponding voltage target value to the BUCK circuit.
In one embodiment of the present invention, the substrate is,
the working parameters of the current solar charging device detected by the detection circuit comprise: the output power of the solar cell module;
the control circuit is used for controlling the drive circuit to send out a drive signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit, and comprises:
and if the output power of the solar battery assembly in the solar charging device is judged to be smaller than the output power of the solar battery assembly, controlling the driving circuit to send a driving signal which runs in a maximum power tracking control MPPT working mode to the BUCK circuit.
Compared with the prior art, the invention comprises the following steps: detecting working parameters of the current solar charging device, wherein the working parameters comprise: one or more of ambient temperature, power, output current, output voltage; and controlling the solar charging device to work in a working mode corresponding to the working parameters. The invention can self-adaptively adjust the current working mode according to the current working parameters of the solar charging device, so that the solar charging device can meet the charging requirements in various environments.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart of a control method of a solar charging device according to an embodiment of the present invention;
fig. 2 is a block diagram of a solar charging device according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of a solar charging device according to an exemplary application of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
As shown in fig. 1, the present invention provides a method for controlling a solar charging device, the method comprising:
s101, detecting working parameters of the current solar charging device;
the working parameters comprise: one or more of ambient temperature, power, output current, output voltage;
s102, controlling the solar charging device to work in a working mode corresponding to the working parameters;
the working modes comprise: normal mode, quota mode;
in the normal mode, the solar charging device outputs rated current, rated voltage and rated power;
and in the limited mode, the current and the power output by the solar charging device are smaller than the corresponding rated current and rated power.
In one embodiment of the present invention,
the detected working parameters of the current solar charging device comprise: ambient temperature, output power of the solar module;
the controlling the solar charging device to work in the working mode corresponding to the working parameters comprises:
determining a temperature range to which the current environment temperature belongs from a plurality of set temperature ranges;
the method comprises the steps that whether the illumination is sufficient or not can be determined by comparing the output power of a solar cell module in a solar charging device with the rated output power of the solar charging device, and if the output power of the solar cell module in the solar charging device is larger than or equal to the rated output power of the solar charging device, the illumination is sufficient;
judging whether the temperature range is the lowest temperature range,
when the temperature range is the lowest temperature range and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the solar charging device to work in a normal mode; when the temperature range is not the lowest temperature range and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the solar charging device to work in a limited mode; and in the quota mode, the target value of the output power or the output current of the solar charging device is smaller than the target value of the output power or the output current in the normal mode.
The solar charging device comprises a plurality of limit modes, wherein different limit modes correspond to different temperature ranges, each limit mode corresponds to the output power or the output current of one solar charging device, the output power or the output current of the solar charging devices in different limit modes are different, and the plurality of limit modes from high to low of the output power or the output current of the solar charging devices correspond to the plurality of temperature ranges from low to high one by one.
In a further embodiment of the present invention,
the detected working parameters of the current solar charging device comprise: ambient temperature, output current, output power of the solar module;
the solar charging device can be determined to work in a normal mode or a limited mode by judging the interval of the ambient temperature and comparing the output power of the solar cell module with the rated output power of the solar charging device;
when the illumination is sufficient, the output current of the solar charging device may increase so as to be greater than or equal to a current target value set in a normal operating mode or a limited operating mode, in order to control the solar charging device to operate in the normal mode, or in order to control the solar charging device to operate in the limited mode, when the output current of the solar charging device is greater than or equal to a corresponding target value, the solar charging device is controlled to operate in a constant current operating mode in which the output current is the target value, and the target value may be a maximum value allowed to be output by the solar charging device in the current operating mode.
If the illumination is sufficient, when the output current of the solar charging device is smaller than the corresponding target value, the solar charging device can be controlled to operate in a normal mode, or the solar charging device can be controlled to operate in a constant-voltage operating mode, wherein the output voltage of the constant-voltage operating mode is the corresponding voltage target value, in order to control the solar charging device to operate in a quota mode.
In a further embodiment of the present invention,
the detected operating parameters of the current solar charging device may include: the output power of the solar cell module;
the controlling the solar charging device to work in the working mode corresponding to the working parameters comprises:
and if the output power of the solar battery component in the solar charging device is judged to be smaller than the rated output power of the solar charging device, controlling the solar charging device to operate in a maximum power tracking control MPPT (maximum power point tracking) working mode, namely charging the load by the maximum power which can be output by the solar battery component, and maximally utilizing component resources.
The working mode of the solar charging device comprises a charging mode.
An embodiment of the present invention is illustrated below with a specific application example, as shown in fig. 3.
1) When the ambient temperature of the current solar charging device is detected to be lower than 60 ℃, and the output power of a solar cell module in the solar charging device is larger than or equal to the rated output power of the solar charging device, namely the charging power (the lighting condition is good), if the output current of the solar charging device is larger than or equal to 2A (a set target value), controlling the solar charging device to operate in a constant current working mode with the output current of 2A, and taking the current as a control target; if the output current of the solar charging device is less than 2A (the set target value), the solar charging device is controlled to operate in a constant voltage working mode with the output voltage of 5V (the set target value), and the voltage is taken as the control target. When the output power of the solar battery component is smaller than the rated output power of the solar charging device (the illumination condition is not good), the solar charging device starts Maximum Power Point Tracking (MPPT), and the solar battery component can output the maximum power to charge.
2) When the ambient temperature of the current solar charging device is detected to be 60-65 ℃, and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device (the lighting condition is good), the solar charging device operates in a quota mode, and the maximum charging current is limited to be 1.5A (a target value). If the output current of the solar charging device is greater than or equal to 1.5A, controlling the solar charging device to operate in a constant current working mode with the output current of 1.5A, and taking the current as a control target; if the output current of the solar charging device is less than 1.5A (the set target value), the solar charging device is controlled to operate in a constant voltage working mode with the output voltage of 5V (the set target value), and the voltage is taken as the control target. When the output power of the solar battery component is smaller than the rated output power of the solar charging device (the illumination condition is not good), the solar charging device starts Maximum Power Point Tracking (MPPT), and the solar battery component can output the maximum power to charge.
3) When the ambient temperature of the solar charging device is detected to be 65-70 ℃, and the output power of the solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device (the lighting condition is good), the solar charging device further operates in a quota mode, and the maximum charging current is limited to be 1A (a target value). If the output current of the solar charging device is greater than or equal to 1A, controlling the solar charging device to operate in a constant current working mode with the output current of 1A, and taking the current as a control target; if the output current of the solar charging device is less than 1A (the set target value), the solar charging device is controlled to operate in a constant voltage working mode with the output voltage of 5V (the set target value), and the voltage is taken as the control target. When the output power of the solar battery component is smaller than the rated output power of the solar charging device (the illumination condition is not good), the solar charging device starts Maximum Power Point Tracking (MPPT), and the solar battery component can output the maximum power to charge.
4) When the ambient temperature of the solar charging device is detected to be 70-75 ℃, and the output power of the solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device (the lighting condition is good), the solar charging device further operates in a quota mode, and the maximum charging current is limited to be 0.8A (a target value). If the output current of the solar charging device is greater than or equal to 0.8A, controlling the solar charging device to operate in a constant current working mode with the output current of 0.8A, and taking the current as a control target; if the output current of the solar charging device is less than 0.8A (the set target value), the solar charging device is controlled to operate in a constant voltage working mode with the output voltage of 5V (the set target value), and the voltage is taken as the control target. When the output power of the solar battery component is smaller than the rated output power of the solar charging device (the illumination condition is not good), the solar charging device starts Maximum Power Point Tracking (MPPT), and the solar battery component can output the maximum power to charge.
5) When the ambient temperature of the current solar charging device is detected to be higher than 75 ℃, the solar charging device is shut down, and the damage to the device caused by overhigh working temperature is avoided.
As shown in fig. 2, the present invention also provides a solar charging device, which includes:
the detecting circuit 201 is configured to detect an operating parameter of a current solar charging device, where the operating parameter includes: one or more of ambient temperature, power, output current, output voltage;
the control circuit 202 is used for controlling the driving circuit to send a driving signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit;
a drive circuit 203 for power-driving the BUCK circuit according to an output signal of the control circuit;
a BUCK circuit 204 for adjusting a current or a voltage or a power output to a load according to a driving signal of the driving circuit;
the solar driving battery assembly 205 is used for converting solar energy into electric energy and outputting the electric energy to the BUCK circuit.
In one embodiment of the present invention,
the working parameters of the current solar charging device detected by the detection circuit comprise: ambient temperature, output power of the solar module;
the control circuit is used for determining a temperature range to which the current environment temperature belongs from a plurality of set temperature ranges; judging whether the temperature range is the lowest temperature range or not, and controlling the driving circuit to send a driving signal working in a normal mode to the BUCK circuit when the temperature range is the lowest temperature range and the output power of a solar cell assembly in the solar charging device is greater than or equal to the rated output power of the solar charging device; when the temperature range is not the lowest temperature range and the output power of the solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the driving circuit to send a driving signal working in a quota mode to the BUCK circuit; and in the quota mode, the target value of the output power or the output current of the solar charging device is smaller than the target value of the output power or the output current in the normal mode.
The solar charging device comprises a plurality of limit modes, wherein different limit modes correspond to different temperature ranges, each limit mode corresponds to the output power or the output current of one solar charging device, the output power or the output current of the solar charging devices in different limit modes are different, and the plurality of limit modes from high to low of the output power or the output current of the solar charging devices correspond to the plurality of temperature ranges from low to high one by one.
In a further embodiment of the present invention,
the working parameters of the current solar charging device detected by the detection circuit comprise: ambient temperature, output current, output power of the solar module;
the control circuit can determine that the solar charging device works in a normal mode or a limited mode by judging the interval of the ambient temperature and comparing the output power of the solar cell module with the rated output power of the solar charging device;
when the illumination is sufficient, the output current of the solar charging device may increase to be larger than or equal to a current target value set in a normal operating mode or a limited operating mode, and when the output current of the solar charging device is larger than or equal to the corresponding target value, the driving circuit is controlled to send out a driving signal to the BUCK circuit, wherein the driving signal operates in a constant current operating mode with the output current being the target value. If the light is sufficient, the output current of the solar charging device is smaller than the corresponding target value, in order to control the solar charging device to work in a normal mode, or in order to control the solar charging device to work in a quota mode, the driving circuit is controlled to send out a driving signal which runs in a constant voltage working mode with the output voltage being the corresponding voltage target value to the BUCK circuit.
In a further embodiment of the present invention,
the working parameters of the current solar charging device detected by the detection circuit comprise: the output power of the solar cell module;
and if the control circuit judges that the output power of the solar battery assembly in the solar charging device is smaller than the rated output power of the solar charging device, the control circuit controls the driving circuit to send a driving signal which operates in a maximum power tracking control MPPT working mode to the BUCK circuit.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (8)
1. A method of controlling a solar charging apparatus, the method comprising:
detecting working parameters of the current solar charging device, wherein the working parameters comprise: one or more of ambient temperature, power, output current, output voltage;
controlling the solar charging device to work in a working mode corresponding to the working parameters;
the working parameters comprise: ambient temperature, output power of the solar module;
the controlling the solar charging device to work in the working mode corresponding to the working parameters comprises:
determining a temperature range to which the current environment temperature belongs from a plurality of set temperature ranges;
when the temperature range is the lowest temperature range and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the solar charging device to work in a normal mode; when the temperature range is not the lowest temperature range and the output power of a solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the solar charging device to work in a limited mode; in the quota mode, the target value of the output power or the output current of the solar charging device is smaller than the target value of the output power or the output current in the normal mode;
the solar charging device comprises a plurality of limit modes, wherein different limit modes correspond to different temperature ranges, each limit mode corresponds to the output power or the output current of one solar charging device, the output power or the output current of the solar charging devices under different limit modes are different, and the limit modes of the output power or the output current of the solar charging devices from high to low correspond to the temperature ranges from low to high one by one;
the environment temperature of the solar charging device is lower than 60 ℃, and if the output current of the solar charging device is greater than or equal to 2A, the solar charging device is controlled to operate in a constant current working mode with the output current of 2A; the environment temperature of the solar charging device is 60-65 ℃, the solar charging device operates in a quota mode, and the maximum charging current is limited to 1.5A; the environment temperature of the solar charging device is 65-70 ℃, the solar charging device further operates in a quota mode, and the maximum charging current is limited to 1A; the environment temperature of the solar charging device is 70-75 ℃, the solar charging device further operates in a quota mode, and the maximum charging current is limited to 0.8A; the environment temperature of the solar charging device is higher than 75 ℃, the solar charging device is shut down, and the device damage caused by overhigh working temperature is avoided.
2. The control method according to claim 1,
the operating parameters further include: outputting current;
the control solar charging device works under normal mode, or, control solar charging device works under the quota mode, include:
and if the output current of the solar charging device is larger than or equal to the corresponding target value, controlling the solar charging device to operate in a constant current working mode with the output current being the target value.
3. The control method according to claim 2,
control solar charging device works under normal mode, or, control solar charging device works under the quota mode, still include:
and if the output current of the solar charging device is smaller than the corresponding target value, controlling the solar charging device to operate in a constant-voltage working mode with the output voltage being the corresponding voltage target value.
4. The control method according to claim 1,
the working parameters comprise: the output power of the solar cell module;
the controlling the solar charging device to work in the working mode corresponding to the working parameters comprises:
and if the output power of the solar battery pack in the solar charging device is judged to be smaller than the rated output power of the solar charging device, controlling the solar charging device to operate in a maximum power tracking control MPPT (maximum power point tracking) working charging mode.
5. A solar charging device, the device comprising:
the detection circuit is used for detecting the working parameters of the current solar charging device, and the working parameters comprise: one or more of ambient temperature, power, output current, output voltage;
the control circuit is used for controlling the driving circuit to send a driving signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit;
the drive circuit is used for carrying out power drive on the BUCK circuit according to the output signal of the control circuit;
the BUCK circuit is used for adjusting current or voltage or power output to a load according to a driving signal of the driving circuit;
the solar driving battery assembly is used for converting solar energy into electric energy and outputting the electric energy to the BUCK circuit;
the working parameters of the current solar charging device detected by the detection circuit comprise: ambient temperature, output power of the solar module;
the control circuit is used for controlling the drive circuit to send out a drive signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit, and comprises:
determining a temperature range to which the current environment temperature belongs from a plurality of set temperature ranges;
when the temperature range is the lowest temperature range and the output power of a solar cell assembly in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling a driving circuit to send a driving signal working in a normal mode to a BUCK circuit; when the temperature range is not the lowest temperature range and the output power of the solar cell module in the solar charging device is greater than or equal to the rated output power of the solar charging device, controlling the driving circuit to send a driving signal working in a quota mode to the BUCK circuit; in the quota mode, the target value of the output power or the output current of the solar charging device is smaller than the target value of the output power or the output current in the normal mode;
the solar charging device comprises a plurality of limit modes, wherein different limit modes correspond to different temperature ranges, each limit mode corresponds to the output power or the output current of one solar charging device, the output power or the output current of the solar charging devices under different limit modes are different, and the limit modes of the output power or the output current of the solar charging devices from high to low correspond to the temperature ranges from low to high one by one;
the environment temperature of the solar charging device is lower than 60 ℃, and if the output current of the solar charging device is greater than or equal to 2A, the solar charging device is controlled to operate in a constant current working mode with the output current of 2A; the environment temperature of the solar charging device is 60-65 ℃, the solar charging device operates in a quota mode, and the maximum charging current is limited to 1.5A; the environment temperature of the solar charging device is 65-70 ℃, the solar charging device further operates in a quota mode, and the maximum charging current is limited to 1A; the environment temperature of the solar charging device is 70-75 ℃, the solar charging device further operates in a quota mode, and the maximum charging current is limited to 0.8A; the environment temperature of the solar charging device is higher than 75 ℃, the solar charging device is shut down, and the device damage caused by overhigh working temperature is avoided.
6. Solar charging device according to claim 5,
the working parameters of the current solar charging device detected by the detection circuit further include: outputting current;
the control circuit controls the driving circuit to send the driving signal working under the normal mode to the BUCK circuit, or controls the driving circuit to send the driving signal working under the quota mode to the BUCK circuit, and the control circuit comprises:
and if the output current of the solar charging device is larger than or equal to the corresponding target value, controlling the driving circuit to send a driving signal which operates in a constant-current working mode with the output current being the target value to the BUCK circuit.
7. Solar charging device according to claim 6,
the control circuit controls the driving circuit to send a driving signal working under a normal mode to the BUCK circuit, or controls the driving circuit to send a driving signal working under a quota mode to the BUCK circuit, and the control circuit further comprises:
and if the output current of the solar charging device is smaller than the corresponding target value, controlling the driving circuit to send a driving signal which operates in a constant-voltage working mode with the output voltage being the corresponding voltage target value to the BUCK circuit.
8. Solar charging device according to claim 5,
the working parameters of the current solar charging device detected by the detection circuit comprise: the output power of the solar cell module;
the control circuit is used for controlling the drive circuit to send out a drive signal to the BUCK conversion BUCK circuit according to the detection result of the detection circuit, and comprises:
and if the output power of the solar battery assembly in the solar charging device is judged to be smaller than the output power of the solar battery assembly, controlling the driving circuit to send a driving signal which runs in a maximum power tracking control MPPT working mode to the BUCK circuit.
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| CN116774769A (en) * | 2023-08-23 | 2023-09-19 | 江苏纳通能源技术有限公司 | MPPT (maximum Power Point tracking) fast high-precision power control method, system, equipment and medium |
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