CN222775986U - Charging circuit and garden lamp of portable lamps and lanterns - Google Patents
Charging circuit and garden lamp of portable lamps and lanterns Download PDFInfo
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- CN222775986U CN222775986U CN202420762108.3U CN202420762108U CN222775986U CN 222775986 U CN222775986 U CN 222775986U CN 202420762108 U CN202420762108 U CN 202420762108U CN 222775986 U CN222775986 U CN 222775986U
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Abstract
The utility model provides a charging circuit of a movable lamp and a garden lamp, and relates to the technical field of charging, wherein the charging circuit comprises a charging interface, a solar charging plate, a resistance dividing unit and a battery management module, the charging interface and the solar charging plate are connected with the battery management module through the resistance dividing unit, and the battery management module is connected with a lithium battery to charge the lithium battery; the resistance dividing unit is also connected with a lithium battery, a second charging path is provided for the charging interface and the solar charging panel, and the output ends of the charging interface and the solar charging panel are connected in series with an anti-backflow diode. The garden lamp is provided with the charging circuit, a light emitting surface is arranged on the outer side of the garden lamp, the light emitting surface comprises an LED module, the lithium battery supplies power, and the garden lamp is also provided with a USB interface which can be used as a charger to charge mobile equipment. According to the utility model, the dual-path charging is realized through the resistance dividing unit, the charging efficiency of the garden lamp is improved, the circuit structure is simple, the energy loss is small, the applicable scene of the lamp is widened, and the practicability is high.
Description
Technical Field
The utility model relates to the technical field of charging, in particular to a charging circuit of a movable lamp and a garden lamp.
Background
In the field of charging technology of portable mobile devices, although high-performance battery management chips are increasingly developed, more battery management chips are adapted to high-voltage batteries, which undoubtedly increases unnecessary cost for some portable mobile devices with small power consumption, and prevents factors such as circuit design, compatibility and customer requirements, so that manufacturers can select chip schemes meeting product market positioning. Thus, the charging efficiency of some portable devices on the market is limited by the battery management chip, and the charging efficiency is low. Although various measures such as a multi-path charging mode with a switching power supply circuit are adopted in the prior art, the problems of design complexity, energy consumption, additional fault points and the like are accompanied, and the problems cannot be effectively solved.
Disclosure of utility model
In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a charging circuit of a movable lamp and a garden lamp, which adopts the following technical scheme:
The charging circuit of the movable lamp comprises a charging interface, a solar charging panel, a resistance dividing unit and a battery management module, wherein the charging interface and the solar charging panel are connected with the battery management module through the resistance dividing unit, and the battery management module is connected with a lithium battery and charges the lithium battery;
The resistance dividing unit is also connected with the lithium battery and provides a second charging path for the charging interface and the solar charging plate;
the output end of the charging interface is connected in series with a diode for preventing current from flowing backwards;
The output end of the solar charging panel is connected in series with a diode for preventing current from flowing backwards.
The positive electrode of the solar charging plate is connected with the first output end, the positive electrode of the charging interface is connected with the second input end, the charging interface and the solar charging plate are connected with the battery management module through the first output end, and the lithium battery is connected through the second output end.
Further improved, a voltage dividing resistor R1 is connected in series between the first input end and the second input end, the second input end is connected with the first output end, a diode D3 is connected in series between the second input end and the second output end, an anode of the diode D3 is close to the second input end, and a voltage dividing resistor R4 is connected in series between the first input end and the second output end.
Further improved, a protection resistor R5 is connected in series between the second input end and the second output end.
Further improved, the second output end is also connected with a zener diode DZ1 for preventing surge, the cathode of the zener diode DZ1 is connected with the second output end, and the anode is grounded.
Further improved, the battery management module comprises an IP9315 chip and a peripheral circuit thereof, the first output terminal is connected to a V in pin of the IP9315 chip, and the lithium battery is connected to a VBAT pin of the IP9315 chip.
The solar charging panel is further improved in that the charging interface is a Type-C interface, the output voltage is 5V, the output current is 2A, the output voltage of the solar charging panel is 6V, and the power is 10W.
The utility model further provides a garden lamp, which comprises the charging circuit of the movable lamp, wherein the solar charging plate and the charging interface are arranged on the outer surface of the garden lamp.
The LED module comprises a warm light LED lamp group and a cold light LED lamp group which are connected in parallel, and the LED module is electrically connected with the battery management module and the lithium battery.
The USB type interface is connected with the VOUT pin of the IP9315 type chip and is used for supplying power to external equipment.
Compared with the prior art, the utility model has the beneficial effects that:
firstly, the utility model adopts a mode of double-circuit charging of the Type-C charging interface and the solar charging panel, and the Type-C charging interface and the solar charging panel charge the lithium battery through connecting a battery management chip on one hand and charge the lithium battery through a resistor separating unit on the other hand. Under the restriction of the resistance dividing unit, the Type-C charging interface and the solar charging panel are enabled to safely and stably charge the lithium battery, and the charging efficiency is improved. Meanwhile, the circuit has simple structure and small loss.
The Type-C charging interface and the solar charging panel are connected in series with the diode for preventing current backflow, so that the Type-C charging interface and the solar charging panel can supply power safely and stably, meanwhile, the structure enables the two power supplies to select output voltage more flexibly, and furthermore, the second output end is also connected with the voltage stabilizing diode, so that surge caused by factors such as mains fluctuation is prevented, and the battery is prevented from being damaged.
Thirdly, the charging circuit is used by the garden lamp, the garden lamp is used as a movable lamp for outdoor use, the connectable power adapter is used for charging through mains supply or a charger, the garden lamp can also be used for charging through illumination received by a solar panel, the outside of the garden lamp is provided with a light emitting surface and a toggle switch, different light emitting modes can be switched, and the garden lamp is also provided with a USB type interface which can be used as a charger for charging mobile equipment. Through above-mentioned scheme, improved garden lamp's charging efficiency, effectively widened its application scene, increased its practicality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the embodiments, it being understood that the following drawings illustrate only some examples of the utility model and are therefore not to be considered limiting of its scope, since it is possible for a person skilled in the art to obtain other related drawings from these drawings without inventive effort.
FIG. 1 is a schematic block diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a charging circuit according to the present utility model;
FIG. 3 is a schematic diagram of a circuit structure of a resistive switching unit according to the present utility model;
Fig. 4 is a schematic diagram of a circuit structure of a load end of a lithium battery according to an embodiment of the utility model;
FIG. 5 is a schematic view of the overall structure of the garden lamp of the present utility model;
Fig. 6 is a schematic view of a status of the garden lamp according to the present utility model.
Reference numerals:
the solar energy charging device comprises a 1-charging interface, a 2-solar charging plate, a 3-resistance dividing unit, a 4-battery management module, a 5-lithium battery and a 6-LED module;
31 i-first input, 32 i-second input, 31 o-first output, 32 o-second output;
600-luminous surface, 601-toggle switch and 700-USB interface.
Detailed Description
For the convenience of understanding by those skilled in the art, the structure of the present utility model will now be described in further detail with reference to the accompanying drawings:
In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The orientation or positional relationship indicated by the terms "portion," "side," "end," etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
The application provides a charging circuit of a movable lamp, which is shown in fig. 1 and 2, and comprises a charging interface 1, a solar charging plate 2, a resistance dividing unit 3 and a battery management module 4, wherein the charging interface 1 and the solar charging plate 2 are connected with the battery management module 4 through the resistance dividing unit 3, the battery management module 4 is connected with a lithium battery 5 and charges the lithium battery 5, the resistance dividing unit 3 is also connected with the lithium battery 5 and charges the lithium battery 5, the output end of the charging interface 1 is connected with a diode for preventing current backflow in series, and the output end of the solar charging plate 2 is connected with the diode for preventing current backflow in series.
In a specific embodiment, the charging interface 1 is a Type-C charging interface 1 with an output voltage of 5V and an output current of 2A, the output voltage of the solar panel is 6V and the output power is 10W, and the battery management module 4 includes an IP9315 Type chip and its peripheral circuits.
Further, the power supply interface of Type-C and the input positive pole PV+ of the solar charging panel 2 are both connected with the resistance dividing unit 3, the resistance dividing unit 3 is connected with the V I N pin of the IP9315 Type chip, and the IP9315 Type chip charges the lithium battery 5 through the VBAT pin. The resistance dividing unit 3 is connected with a lithium battery 5 on the other hand to charge the lithium battery 5, and the lithium battery 5 is also connected with a load to supply power to the load. Through the structure, the device can be connected with the commercial power through the Type-C charging interface 1 to charge, and can also receive solar energy for charging outdoors, on the other hand, the Type-C charging interface 1 and the solar charging panel 2 can also charge the lithium battery 5 from the other charging branch, and under the protection of the backflow prevention diodes D1 and D2, the current of the branch is controlled to be a reasonable value through the separation unit 3, so that the lithium battery 5 is safely and stably charged, the charging efficiency is effectively improved, the whole circuit structure is simple, and the energy loss is low.
Referring to fig. 2 and 3, the resistance dividing unit 3 includes a first input end 31i, a second input end 32i, a first output end 31o and a second output end 32o, an input positive electrode of the solar charging panel 2 is connected with the first output end 31o, a positive electrode of the charging interface 1 is connected with the second input end 32i, the charging interface 1 and the solar charging panel 2 are connected with the battery management module 4 through the first output end 31o, and are connected with the lithium battery 5 through the second output end 32o, the voltage of the lithium battery 5 is 3.7V, and the capacity is 14AH.
As shown in fig. 3, a voltage dividing resistor R1 with a resistance value of 1-2.2 Ω is connected in series between the first input end 31i and the second input end 32i, the second input end 32i is connected with the first output end 31o, a diode D3 is connected in series between the second input end 32i and the second output end 32o, an anode of the diode D3 is close to the second input end 32i, and a voltage dividing resistor R4 with a resistance value of 1-2.2 Ω is connected in series between the first input end 31i and the second output end 32 o. A protection resistor R5 with a resistance value of 1-2.2Ω is also connected in series between the second input terminal 32i and the second output terminal 32 o.
More specifically, the charging interface 1 is connected to the second input end 32I through the anti-backflow diode D2, and is output from the second output end 32o through the protection resistor R5 and the diode D3 to be connected to the positive electrode of the lithium battery 5, and is connected to the second input end 32I through the anti-backflow diode D2, and is output from the first output end 31o to be connected to the V I N pin of the IP9315 type chip, wherein the IP9315 type chip is charged by the VBAT pin to the lithium battery 5. The solar charging plate 2 is connected with a first input end 31I through a backflow prevention diode D1, is output by a second output end 32o after passing through a voltage dividing resistor R4 and is connected with the positive electrode of the lithium battery 5, and is output by a first output end 31o after passing through the voltage dividing resistor R1 after being connected with the first input end 31I, is connected with a V I N pin of an IP9315 type chip, and the IP9315 type chip charges the lithium battery 5 through a VBAT pin.
As shown in fig. 2, the second output terminal 32o is further connected to a zener diode DZ1 for preventing surge, and a cathode of the zener diode DZ1 is connected to the second output terminal 32o, and an anode is grounded. Specifically, the voltage stabilizing value of the zener diode DZ1 is 5.1V, when the voltage of the second output end 32o instantaneously fluctuates due to the conditions of equipment starting, mains supply fluctuation and the like, and the voltage exceeds 5.1V, the zener diode DZ1 is reversely conducted to pull down the voltage to the ground potential, so that the lithium battery 5 and other circuit elements are prevented from being damaged by the excessively high voltage.
The utility model further provides a garden lamp, comprising a charging circuit of the movable lamp, as described above, and as shown in fig. 5 and 6, the garden lamp comprises a Type-C charging interface 1, a USB interface 700, a toggle switch 601, a light emitting surface 600 and a solar charging panel 2.
As shown in fig. 2, the VOUT pin of the IP9315 chip is connected with the USB interface 700, and the USB interface 700 is used to supply power to an external device. The IP9315 type chip is also provided with LED pins for connecting four LED indicator lamps, the four LED indicator lamps are all turned on when the electric quantity is more than or equal to 75%, one LED indicator lamp is turned off when the electric quantity is less than 75%, 50% and 25%, and the last LED indicator lamp flashes when the electric quantity is less than 3%.
As shown in fig. 4, a schematic circuit structure of a load end of a lithium battery 5 of a garden lamp is shown, the lithium battery 5 is connected with an LED module 6 through a protection resistor R6, the LED module 6 comprises a warm light LED lamp set and a cold light LED lamp set connected in parallel, the LED module 6 is controlled by the toggle switch 601, and the light emitting surface 600 can be controlled to switch between a warm light mode, a cold light mode and a warm light+cold light mode. In particular, referring to fig. 2 and 4, the second output end 32o is directly connected to the LED module 6, and when the lithium battery 5 fails or is not connected, the charging interface 1 and the solar charging panel 2 can directly supply power to the LED module 6.
In a specific embodiment, referring to fig. 4, the warm light LED lamp set is composed of a plurality of LEDs-W connected in parallel, each branch is further connected in series with a protection resistor R, and the cold light LED lamp set is consistent with the warm light LED lamp set in structure and is composed of a plurality of LEDs-C and the protection resistor R. The LED module 6 forms a luminous surface 600, is arranged at the front side of the garden lamp, and the rear side is the solar charging panel 2.
As shown in fig. 5, the garden lamp is supported by a bracket in an inclined manner, and the Type-C charging interface 1, the USB interface 700, the toggle switch 601 and the LED indicator lamp are disposed at the upper end.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420762108.3U CN222775986U (en) | 2024-04-12 | 2024-04-12 | Charging circuit and garden lamp of portable lamps and lanterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420762108.3U CN222775986U (en) | 2024-04-12 | 2024-04-12 | Charging circuit and garden lamp of portable lamps and lanterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222775986U true CN222775986U (en) | 2025-04-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420762108.3U Active CN222775986U (en) | 2024-04-12 | 2024-04-12 | Charging circuit and garden lamp of portable lamps and lanterns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222775986U (en) |
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2024
- 2024-04-12 CN CN202420762108.3U patent/CN222775986U/en active Active
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