CN210669609U - Solar power supply circuit of outdoor micro-power equipment - Google Patents
Solar power supply circuit of outdoor micro-power equipment Download PDFInfo
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- CN210669609U CN210669609U CN201920966506.6U CN201920966506U CN210669609U CN 210669609 U CN210669609 U CN 210669609U CN 201920966506 U CN201920966506 U CN 201920966506U CN 210669609 U CN210669609 U CN 210669609U
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Abstract
The utility model relates to a power design technical field, concretely relates to outdoor micropower equipment solar energy supply circuit, including solar cell panel, super capacitor energy storage module, lithium cell energy storage module, power management module, bluetooth monitoring module. The utility model discloses a combination of super capacitor and lithium cell solves the frequent shortcoming of filling and discharging the easy inefficacy of in-process of lithium cell, utilizes the advantage that super capacitor can not limit time charge and discharge and the advantage of lithium cell large capacity, high density energy storage, has satisfied the demand of outdoor micropower equipment solar energy power supply equipment steady operation, life when effectively improving equipment adopts the solar energy power supply. The utility model discloses set up power management module, can rationally control filling, discharging of super capacitor and lithium cell, furthest reduces filling, the discharge process of lithium cell, can improve the life of lithium cell effectively, ensures solar energy power supply system long-term operation stability.
Description
Technical Field
The utility model relates to a power design technical field, concretely relates to outdoor micropower equipment solar energy supply circuit.
Background
With the development of computer technology, many outdoor micropower devices are used in multiple fields such as military affairs, scientific research, traffic, environmental monitoring, medical health and the like, and the management and maintenance difficulty is high due to wide distribution areas. The reliability and the service life of the power supply have great influence on the normal operation of the outdoor small-load monitoring equipment. The existing monitoring equipment adopts a power supply scheme combining solar energy and a lithium battery, but the service life of the lithium battery is limited, so that the requirement of long-term operation of the equipment is difficult to meet; meanwhile, in the existing power supply scheme of the small-load equipment, the effective monitoring on the energy storage state of the super capacitor and the lithium battery is lacked, and the working state of a power supply in the monitoring equipment cannot be known in time.
Disclosure of Invention
In order to solve the problem, the utility model provides an outdoor micropower equipment solar energy supply circuit, concrete technical scheme is as follows:
a solar power supply circuit of outdoor micro-power equipment comprises a solar cell panel, a super capacitor energy storage module, a lithium battery energy storage module, a power management module and a Bluetooth monitoring module; the solar cell panel is connected with the super capacitor energy storage module, and the super capacitor energy storage module and the lithium battery energy storage module are respectively connected with the power management module; the super capacitor energy storage module is connected with the lithium battery energy storage module; the Bluetooth monitoring module is respectively connected with the super capacitor energy storage module, the lithium battery energy storage module and the power management module; the super capacitor energy storage module comprises a super capacitor; the lithium battery energy storage module comprises a lithium battery;
the solar cell panel is used for converting solar energy into electric energy and inputting the converted electric energy into the super capacitor energy storage module; the super capacitor energy storage module is used for storing electric energy and providing power for small load equipment or charging the lithium battery energy storage module through the power management module; the lithium battery energy storage module is used for charging when the electric energy on the super capacitor energy storage module is larger than the power consumption of the small-load equipment, and discharging the small-load equipment through the power management module when the electric energy supplied by the super capacitor energy storage module to the small-load equipment is insufficient; the power management module is used for controlling the switching of the super capacitor energy storage module and the lithium battery energy storage module and outputting a stable voltage source; the Bluetooth monitoring module is used for monitoring the states of the super capacitor energy storage module and the lithium battery energy storage module and controlling the output of the power management module.
Preferably, the solar cell panel is connected in series with the super capacitor energy storage module through a reverse flow prevention diode.
Preferably, the super capacitor energy storage module further comprises an overvoltage protection diode; the super capacitor is connected with the overvoltage protection diode in parallel; the overvoltage protection diode is used for protecting the super capacitor from breakdown due to overvoltage, and the voltage protection value is the rated voltage of the super capacitor.
Preferably, the maximum charging power Pcmax of the super capacitor and the maximum power Pomax of the small load device have the following relationship:
Pcmax>10*Pomax。
preferably, the device further comprises a switch tube; the switch tube is connected with the power supply management module and used for controlling the on-off of the power supply.
The utility model has the advantages that:
the utility model discloses a combination of super capacitor and lithium cell solves the frequent shortcoming of filling and discharging the easy inefficacy of in-process of lithium cell, utilizes the advantage that super capacitor can not limit time charge and discharge and the advantage of lithium cell large capacity, high density energy storage, has satisfied the demand of outdoor micropower equipment solar energy power supply equipment steady operation, life when effectively improving equipment adopts the solar energy power supply. The utility model discloses set up power management module, can rationally control filling, discharging of super capacitor and lithium cell, furthest reduces filling, the discharge process of lithium cell, can improve the life of lithium cell effectively, ensures solar energy power supply system long-term operation stability.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a circuit diagram of the connection of a solar panel with a super capacitor energy storage module;
FIG. 3 is a circuit schematic of a power management module;
FIG. 4 is a schematic circuit diagram of a Bluetooth monitoring module.
Detailed Description
For a better understanding of the present invention, the following further description is made in conjunction with the accompanying drawings and the specific embodiments:
as shown in fig. 1-4, a solar power supply circuit for an outdoor micro-power device includes a solar cell panel, a super capacitor energy storage module, a lithium battery energy storage module, a power management module, and a bluetooth monitoring module; the solar cell panel is connected with the super capacitor energy storage module in series through the anti-reflux diode, and the super capacitor energy storage module and the lithium battery energy storage module are respectively connected with the power management module; the super capacitor energy storage module is connected with the lithium battery energy storage module; the lithium battery energy storage module comprises a lithium battery; the Bluetooth monitoring module is respectively connected with the super capacitor energy storage module, the lithium battery energy storage module and the power management module; the super capacitor energy storage module comprises a super capacitor and an overvoltage protection diode; the super capacitor is connected with the overvoltage protection diode in parallel; the overvoltage protection diode is used for protecting the super capacitor from breakdown due to overvoltage, and the voltage protection value is the rated voltage of the super capacitor.
The solar cell panel is used for converting solar energy into electric energy and inputting the converted electric energy into the super capacitor energy storage module; the super-capacitor energy storage module is used for storing electric energy and supplying power to small-load equipment or charging the lithium battery energy storage module through the power management module; the lithium battery energy storage module is used for charging when the electric energy on the super capacitor energy storage module is larger than the power consumption of the small-load equipment, and discharging the small-load equipment through the power management module when the electric energy supplied by the super capacitor energy storage module to the small-load equipment is insufficient; the power management module is used for controlling the switching of the super capacitor energy storage module and the lithium battery energy storage module and outputting a stable voltage source; the Bluetooth monitoring module is used for monitoring the states of the super capacitor energy storage module and the lithium battery energy storage module and controlling the output of the power management module. The AD sampling interface and the IO interface of the Bluetooth monitoring module are utilized, so that each state of the solar power supply circuit can be effectively monitored, and the output of a power supply load can be controlled. The utility model discloses in select super capacitor's voltage, the voltage of lithium cell and power management module's steady voltage output still can dispose more monitoring objects as required as the object of monitoring, control in a flexible way.
As shown in fig. 3, the power management module takes the +5VD output of the constant voltage power supply as a control target, and has the functions of overcurrent, overvoltage, overheat protection and the like, and the main control strategy is as follows (1) when the input voltage + VCC of the solar cell panel is greater than the lithium battery voltage + Vbat, the + VCC power supply is input and then is stabilized by the power management module to output the +5 VD. (2) When the input voltage + VC of the solar cell panel is smaller than the voltage of the lithium battery, the input voltage + Vbat of the lithium battery is stabilized by the power management module and then the +5VD power supply is output. (3) When the solar input voltage + Vcc is greater than the lithium battery voltage + Vbat and the lithium battery voltage is less than the full charge voltage 4.2V, a part of the solar power supply + Vcc is used for charging the lithium battery, and the +5VD regulated power supply output must be preferentially met.
The capacity of the super capacitor should ensure that the maximum charging power Pcmax of the capacitor is much larger than the maximum power Pomax of the small load device, for example, good results can be obtained according to the Pcmax >10 Pomax, that is, when solar energy cannot be collected at night, most of electric energy is still supplied by the super capacitor, and repeated charging and discharging of a lithium battery can be avoided.
The solar power supply circuit of the outdoor micro-power equipment further comprises a switch tube; the switch tube is connected with the power management module and used for controlling the on-off of a power supply, the Bluetooth monitoring module can transmit power wirelessly, the mobile terminal can monitor the electric energy of the super capacitor and the electric energy of the lithium battery, and the power supply of the small-load equipment is controlled to be connected with or disconnected from the switch tube through the Bluetooth instruction.
The anti-reflux diode adopts a Schottky diode IN5822, the overvoltage protection diode adopts SMAJ6.0A, the type of the switch tube is IRF5210, and the Bluetooth monitoring module comprises a Bluetooth module JDY-17.
The utility model discloses a work flow as follows:
s1: the solar cell panel collects solar energy to generate electric energy, and the electric energy passes through the anti-reflux diode and then is input into the super capacitor energy storage module.
S2: the super capacitor energy storage module receives electric energy input by the solar cell panel and enables the voltage Vc on the super capacitor to be increased.
S3: the power management module is used for managing the charging and discharging of the super-capacitor energy storage module and the lithium battery energy storage module, when input voltage Vcc on the solar panel is greater than voltage Vbat of the lithium battery, the small load equipment is powered by the super-capacitor energy storage module, and if the voltage Vbat of the lithium battery is less than Vmax when the lithium battery is fully charged with the highest voltage, the electric energy stored by the super-capacitor energy storage module charges the lithium battery energy storage module, and voltage Vc on the super-capacitor is limited to be close to the voltage Vbat on the lithium battery.
S4: when the electric quantity stored in the lithium battery is full and the fully charged voltage reaches Vmax, the lithium battery energy storage module does not receive the electric energy in the super capacitor energy storage module any more; besides supplying power to the load, the voltage Vc on the super capacitor can be increased by the electric energy continuously input by the solar panel, and when the voltage on the super capacitor reaches the discharge voltage of the overvoltage protection diode, the redundant electric energy is discharged to the ground through the overvoltage protection diode, so that the breakdown of the overvoltage of the super capacitor is prevented.
S5: when the solar cell panel cannot collect electric energy, the super capacitor energy storage module continues to supply power to the small-load equipment until the voltage Vc on the super capacitor is smaller than the voltage Vbat on the lithium battery, and the power management module is switched to the lithium battery energy storage module to supply power to the small-load equipment, so that the stable operation of the small-load equipment is ensured.
S6: the Bluetooth monitoring module is activated through the mobile terminal, the Bluetooth monitoring module is in an ultra-low power consumption dormant state when not connected, the Bluetooth power consumption is only dozens of microamperes, and the mobile terminal detects the voltage of the super capacitor, the electric quantity of the lithium battery and the load size of the small-load equipment through the Bluetooth monitoring module and collects corresponding data.
The present invention is not limited to the above-described embodiments, but only to the preferred embodiments of the present invention, and the present invention is not limited thereto, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. An outdoor micropower equipment solar energy supply circuit which characterized in that: the system comprises a solar cell panel, a super capacitor energy storage module, a lithium battery energy storage module, a power management module and a Bluetooth monitoring module; the solar cell panel is connected with the super capacitor energy storage module, and the super capacitor energy storage module and the lithium battery energy storage module are respectively connected with the power management module; the super capacitor energy storage module is connected with the lithium battery energy storage module; the Bluetooth monitoring module is respectively connected with the super capacitor energy storage module, the lithium battery energy storage module and the power management module; the super capacitor energy storage module comprises a super capacitor; the lithium battery energy storage module comprises a lithium battery;
the solar cell panel is used for converting solar energy into electric energy and inputting the converted electric energy into the super capacitor energy storage module; the super capacitor energy storage module is used for storing electric energy and providing power for small load equipment or charging the lithium battery energy storage module through the power management module; the lithium battery energy storage module is used for charging when the electric energy on the super capacitor energy storage module is larger than the power consumption of the small-load equipment, and discharging the small-load equipment through the power management module when the electric energy supplied by the super capacitor energy storage module to the small-load equipment is insufficient; the power management module is used for controlling the switching of the super capacitor energy storage module and the lithium battery energy storage module and outputting a stable voltage source; the Bluetooth monitoring module is used for monitoring the states of the super capacitor energy storage module and the lithium battery energy storage module and controlling the output of the power management module.
2. The outdoor micropower device solar power supply circuit of claim 1, wherein: the solar cell panel is connected with the super capacitor energy storage module in series through the anti-reflux diode.
3. The outdoor micropower device solar power supply circuit of claim 1, wherein: the super capacitor energy storage module also comprises an overvoltage protection diode; the super capacitor is connected with the overvoltage protection diode in parallel; the overvoltage protection diode is used for protecting the super capacitor from breakdown due to overvoltage, and the voltage protection value is the rated voltage of the super capacitor.
4. The outdoor micropower device solar power supply circuit of claim 3, wherein: the maximum charging power Pcmax of the super capacitor and the maximum power Pomax of the small load device have the following relationship:
Pcmax>10*Pomax。
5. the outdoor micropower device solar power supply circuit of claim 1, wherein: the device also comprises a switch tube; the switch tube is connected with the power supply management module and used for controlling the on-off of the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920966506.6U CN210669609U (en) | 2019-06-25 | 2019-06-25 | Solar power supply circuit of outdoor micro-power equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920966506.6U CN210669609U (en) | 2019-06-25 | 2019-06-25 | Solar power supply circuit of outdoor micro-power equipment |
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| CN210669609U true CN210669609U (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277826A (en) * | 2019-06-25 | 2019-09-24 | 广西电网有限责任公司电力科学研究院 | A kind of solar power supply circuit and method of supplying power to of small load equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277826A (en) * | 2019-06-25 | 2019-09-24 | 广西电网有限责任公司电力科学研究院 | A kind of solar power supply circuit and method of supplying power to of small load equipment |
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