CN220830335U - Solar charging energy storage power supply - Google Patents
Solar charging energy storage power supply Download PDFInfo
- Publication number
- CN220830335U CN220830335U CN202321058183.3U CN202321058183U CN220830335U CN 220830335 U CN220830335 U CN 220830335U CN 202321058183 U CN202321058183 U CN 202321058183U CN 220830335 U CN220830335 U CN 220830335U
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- China
- Prior art keywords
- voltage
- charging
- mcu
- solar
- energy storage
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- 238000004146 energy storage Methods 0.000 title claims abstract description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005286 illumination Methods 0.000 claims abstract description 12
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 11
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 1
- 235000021178 picnic Nutrition 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a solar charging energy storage power supply, which comprises a solar photovoltaic panel, a voltage stabilizing circuit, an MCU, PWM and a lithium battery, wherein the solar photovoltaic panel generates voltage/current through illumination, the voltage stabilizing circuit provides MCU working voltage, the MCU detects that the voltage of the photovoltaic panel is larger than undervoltage protection, the MCU controls a driving chip to output and drive the PWM, drives an MOS tube and switches a step-up/step-down circuit according to the detected voltage, when the illumination intensity is lower, the input voltage is forcedly clamped on a certain voltage value, at the moment, the input current changes along with the change of the illumination intensity, the output voltage A is kept constant, the output current changes along with the change of the input current, and the lowest 5W charging can be realized, so that the lithium battery is always in a charging state. The solar charging energy storage power supply is suitable for an energy storage power supply of a solar charging panel, the actual maximum output power of the solar panel is continuously monitored in the charging process, and charging power is automatically adapted to the maximum output power of the solar panel for charging.
Description
Technical Field
The utility model relates to an energy storage power supply, in particular to a solar charging energy storage power supply.
Background
At present, most of mobile power supplies in the market are charged by an AC power adapter, and the AC power adapter is only limited to places with commercial power. When the solar energy charging system is not used during going out, playing or picnic, some products are charged by solar energy but are unstable in charging, and when the sun is insufficient or smaller than the charging rated power, the solar energy charging system enters an intermittent charging state and cannot be charged normally.
Disclosure of utility model
In view of the shortcomings of the background art, the technical problem to be solved by the utility model is to provide a solar charging energy storage power supply, which is used for continuously monitoring the actual maximum output power of a solar panel in the charging process and automatically adapting the charging power according to the maximum output power of the solar panel for charging.
The utility model provides a solar charging energy storage power supply, which comprises a solar photovoltaic panel, a voltage stabilizing circuit, an MCU, PWM and a lithium battery, wherein the solar photovoltaic panel generates voltage/current through illumination, the voltage stabilizing circuit provides MCU working voltage, the MCU detects that the voltage of the photovoltaic panel is larger than undervoltage protection, the MCU controls a driving chip to output and drive the PWM, drives a MOS tube and switches a voltage rising/dropping circuit according to the detected voltage, when the illumination intensity is lower, the input voltage is forcedly clamped on a certain voltage value, at the moment, the input current changes along with the change of the illumination intensity, the output voltage A is kept constant, the output current changes along with the change of the input current, the lowest 5W charging can be realized, so that the lithium battery is always in a charging state, and is in constant current, constant voltage and floating charging modes until the battery is full, meanwhile, the MCU detects the temperature of the PCB, when the temperature is higher than a certain value, the MCU controls the driving chip to reduce the charging power, when the temperature is higher than a protection value, the MCU closes the driving chip to close charging, and when the temperature is reduced, the charging is restored.
Preferably, the voltage stabilizing circuit provides the MCU with an operating voltage of 5V, and the output voltage A is maintained at 29.4V.
Preferably, the lithium battery is connected with the output short-circuit protection circuit and the overcharge protection circuit. The utility model has the technical effects that: according to the solar charging energy storage power supply provided by the utility model, the actual maximum output power of the solar panel is continuously monitored in the charging process, and the charging power is automatically adapted to the maximum output power of the solar panel for charging. The minimum charging power can be 5W, so that the charging can be effectively performed even when the sunlight is relatively weak.
Drawings
Fig. 1 is a circuit block diagram of a solar charging energy storage power supply provided by the utility model.
Fig. 2 is a schematic circuit diagram of a solar charging energy storage power supply provided by the utility model.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 and 2, the solar charging energy storage power supply provided by the utility model comprises a solar photovoltaic panel, a voltage stabilizing circuit, an MCU, PWM and a lithium battery, wherein the solar photovoltaic panel generates voltage/current through illumination, the voltage stabilizing circuit provides MCU working voltage, the MCU detects that the voltage of the photovoltaic panel is larger than undervoltage protection, the MCU controls a driving chip to output and drive PWM, drives a MOS tube and switches an up/down circuit according to the detected voltage, when the illumination intensity is lower, the input voltage is forcedly clamped on a certain voltage value, at the moment, the input current changes along with the change of the illumination intensity, the output voltage A is kept constant, the output current changes along with the change of the input current, and 5W charging can be realized at the lowest, so that the lithium battery is always in a charging state, and is in a constant current, constant voltage and floating charging mode until the battery is full, meanwhile, the MCU detects the temperature of the PCB, when the temperature is larger than a certain value, the MCU controls the driving chip to reduce the charging power, when the MCU is larger than the protection value, the MCU closes the driving chip to close charging, and the charging, and when the temperature is reduced, the charging is recovered. The voltage stabilizing circuit provides the MCU with the working voltage of 5V, and the output voltage A is maintained at 29.4V. And the lithium battery is connected with the output short-circuit protection circuit and the overcharge protection circuit.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (3)
1. A solar charging energy storage power supply is characterized in that: the lithium battery charging control circuit comprises a solar photovoltaic panel, a voltage stabilizing circuit, an MCU, PWM and a lithium battery, wherein the solar photovoltaic panel generates voltage/current through illumination, MCU working voltage is provided through the voltage stabilizing circuit, the MCU detects that the voltage of the photovoltaic panel is larger than under-voltage protection, the MCU controls a driving chip to output and drive PWM, a MOS tube is driven, a voltage rising/dropping circuit is switched according to the detected voltage, when the illumination intensity is lower, the input voltage is forcedly clamped on a certain voltage value, at the moment, the input current changes along with the change of the illumination intensity, the output voltage A is kept certain, the output current changes along with the change of the input current, the lowest 5W charging can be realized, the lithium battery is always in a charging state, and in a constant current, constant voltage and floating charging mode until the battery is full, meanwhile, the MCU detects the temperature of the PCB, when the temperature is larger than a certain value, the MCU controls the driving chip to reduce the charging power, when the MCU is larger than the protection value, the driving chip is turned off for charging, when the temperature is reduced, the charging is turned off, and the charging is resumed.
2. The solar charging energy storage power supply according to claim 1, characterized in that: the voltage stabilizing circuit provides the MCU with the working voltage of 5V, and the output voltage A is maintained at 29.4V.
3. The solar charging energy storage power supply according to claim 1 or 2, characterized in that: and the lithium battery is connected with the output short-circuit protection circuit and the overcharge protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321058183.3U CN220830335U (en) | 2023-05-06 | 2023-05-06 | Solar charging energy storage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321058183.3U CN220830335U (en) | 2023-05-06 | 2023-05-06 | Solar charging energy storage power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220830335U true CN220830335U (en) | 2024-04-23 |
Family
ID=90725774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321058183.3U Active CN220830335U (en) | 2023-05-06 | 2023-05-06 | Solar charging energy storage power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220830335U (en) |
-
2023
- 2023-05-06 CN CN202321058183.3U patent/CN220830335U/en active Active
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