CN221574911U - Portable power supply and secondary power supply circuit thereof - Google Patents
Portable power supply and secondary power supply circuit thereof Download PDFInfo
- Publication number
- CN221574911U CN221574911U CN202323264120.6U CN202323264120U CN221574911U CN 221574911 U CN221574911 U CN 221574911U CN 202323264120 U CN202323264120 U CN 202323264120U CN 221574911 U CN221574911 U CN 221574911U
- Authority
- CN
- China
- Prior art keywords
- power supply
- circuit
- input
- portable
- management chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a portable power supply and a secondary power supply circuit thereof. The secondary power supply circuit comprises a power management chip with an enabling pin, a small amount of resistor, capacitor and diode, is simple in circuit and low in cost, meets the standardization requirement of a portable power supply, realizes that a manual switch is adopted to start when a battery is powered, can be automatically started to supply power for the battery when mains supply and a solar panel are powered, and keeps the portable power supply in a full-power state when being used next time.
Description
Technical Field
The utility model relates to the field of portable power supplies, in particular to a portable power supply and a secondary power supply circuit thereof.
Background
The specifications of portable power supplies give the following requirements: when the battery is used for power supply, the manual control is needed; when the external power supply such as commercial power or solar energy is adopted for supplying power, the portable power supply can be started automatically to charge the battery, so that the portable power supply is ensured to be in a full-power state when being used next time.
The portable products are competitive, and a secondary power supply circuit with small size and low cost is provided for supplying power to the main control unit while the technical specification of the portable power supply is met, so that the energy management of the portable power supply is realized.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides a secondary power supply circuit of a portable power supply, which accords with the technical specification of the portable power supply and has low cost.
The technical proposal is as follows:
A secondary power supply circuit of portable power supply for supplying power to the main control unit of the portable power supply comprises at least three power input terminals, at least one power output terminal, an input control circuit, a control signal terminal and a power management chip,
The power management chip comprises an input pin, an enabling pin, an output pin and a grounding pin;
The three power input terminals are respectively used for connecting a photovoltaic power supply, a direct current power supply subjected to mains supply rectification and a battery; the three input terminals are respectively connected to the input pins of the power management chip through diodes;
the power output terminal is electrically connected with an output pin of the power management chip and is used for supplying power to a main control unit of the portable power supply;
Two terminals for connecting the photovoltaic power supply and the direct current power supply after mains rectification are respectively connected to the input end of the input control circuit through a diode;
The input control circuit is a voltage division and stabilizing circuit, and the output end of the input control circuit is connected with the enabling pin of the power management chip;
The control signal terminal is connected with an enabling pin of the power management chip.
Further, the voltage dividing and stabilizing circuit comprises a first resistor, a second resistor, a first voltage stabilizing tube and a first switching tube;
One end of the first resistor is connected with the input end of the voltage dividing and stabilizing circuit, and the other end of the first resistor is connected with the second resistor, the cathode of the first voltage stabilizing tube and the control end of the first switching tube; the second resistor, the anode of the first voltage stabilizing tube and the circuit ground are connected.
Further, the first switching tube is an N-channel MOS tube.
Further, the control signal end is connected with one end of a manual control switch, and the other end of the manual control switch is connected with a circuit ground.
Further, the power management chip further comprises a feedback pin.
Further, the power management chip is a DC-DC conversion chip.
A portable power supply comprises a mains supply input terminal, a photovoltaic power supply input terminal, an AC/DC module, a DC/DC module, a battery, a main control unit and a secondary power supply circuit; the secondary power supply circuit is the portable power supply secondary power supply circuit according to any technical scheme, and supplies power to the main control unit.
The utility model realizes the following technical effects:
The secondary power supply circuit is simple in circuit and low in cost, meets the standardization requirement of the portable power supply, is started by adopting a manual switch when the battery is powered, can be automatically started to supply power for the battery when the mains supply and the solar panel are powered, and keeps the next use of the portable power supply in a full-power state.
Drawings
FIG. 1 is a schematic block diagram of a portable power supply of the present utility model;
Fig. 2 is a schematic circuit diagram of the secondary power supply circuit of the present utility model.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model.
The utility model will now be further described with reference to the drawings and detailed description.
As shown in fig. 1, the present utility model provides a system block diagram of a portable power source. The portable power supply comprises an AC/DC module, a battery, a main control unit, a secondary power supply circuit and other circuits. The solar panel and the mains supply can be adopted to supply power to the battery, and the main control unit is used for controlling the charging and discharging processes of the battery, so that the high reliability and long service life of the battery are ensured. The secondary power supply circuit is connected with a power grid, a photovoltaic battery and a battery of the portable power supply to supply power to a main control unit of the portable power supply.
As shown in fig. 2, the present utility model provides an embodiment of a secondary power supply circuit for a portable power supply. The secondary Power supply circuit includes three Power input terminals ac_power, dc_pv, and BAT, a Power output terminal vcc_1, an input control circuit, a control signal terminal CN1, and a Power management chip IC3.
In this embodiment, the power management chip IC3 is a DC-DC conversion chip, and includes an input pin VIN, an enable pin ON/OFF, an OUTPUT pin OUTPUT, a ground pin GND, and a feedback pin FB. DC-DC conversion chips with different specifications can be selected according to specific output current and working efficiency, such as XL2576S with low cost.
The three Power input terminals DC_PV, AC_Power and BAT are respectively used for connecting a direct-current photovoltaic Power supply, a direct-current Power supply subjected to mains supply step-down rectification and an internal battery of the portable Power supply; three input terminals dc_pv, ac_power and BAT are connected to the input VIN of the Power management chip IC3 through diodes D1, D2, D3, respectively; the power OUTPUT terminal VCC_1 is connected with the main control unit of the portable power supply, and is electrically connected with the OUTPUT end OUTPUT of the internal power management chip IC 3.
Terminals dc_pv, ac_power are connected to the input of the input control circuit via diodes D5, D6, respectively. The input control circuit is a voltage division and stabilization circuit, and the output end of the input control circuit is connected with the enable pin ON/OFF of the power management chip IC 3; the control signal terminal CN1 is connected to the enable pin ON/OFF of the power management chip IC 3.
In this embodiment, the voltage dividing and stabilizing circuit includes a resistor R3, a resistor R4, a voltage stabilizing tube Z1, and an N-channel MOS tube Q1;
One end of the resistor R1 is connected with the input end of the voltage dividing and stabilizing circuit, and the other end of the resistor R1 is connected with the resistor R4, the cathode of the voltage stabilizing tube Z1 and the control end of the N-channel MOS tube Q1; resistor R4, the anode of regulator Z1 and circuit ground.
The circuit also comprises a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C5 and other devices for power supply filtering, wherein the resistor R1, the resistor R2, the diode D4, the capacitor C1 and the inductor L1 form an output circuit of the power supply management chip IC3, and finally the output circuit is output through a power supply output terminal VCC_1.
When the battery BAT is used for supplying POWER, the voltage exists at the input end of the IC3, and the self-locking type tact switch or the toggle switch (which is equivalent to adding a short-jump switch on CN 1) is required to be pressed down, so that the signal POWER_EN is pulled down, the IC3 chip works to generate VCC to supply POWER for the main control unit, and then the whole machine is supplied with POWER; when the commercial POWER AC-POWER and the photovoltaic POWER DC_PV are connected, the voltage exists at the input end of the IC3, and when the voltage of the input end reaches the starting voltage of the Q1 pipe after the voltage is divided by the R3 and the R4, the Q1 pipe is conducted, POWEN _EN is grounded, the IC3 works to generate VCC, and POWER supply is provided for the whole machine; the three groups of inputs share one power supply and have two functions of starting one remote control.
The technical effects are as follows:
The secondary power supply circuit is simple in circuit and low in cost, meets the standardization requirement of the portable power supply, is started by adopting a manual switch when the battery is powered, can be automatically started to supply power for the battery when the mains supply and the solar panel are powered, and keeps the next use of the portable power supply in a full-power state.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. The utility model provides a portable power supply's secondary power supply circuit for the main control unit power supply of portable power supply, its characterized in that: comprises at least three power input terminals, at least one power output terminal, an input control circuit, a control signal terminal and a power management chip,
The power management chip comprises an input pin, an enabling pin, an output pin and a grounding pin;
The three power input terminals are respectively used for connecting a photovoltaic power supply, a direct current power supply subjected to mains supply rectification and a battery; the three input terminals are respectively connected to the input pins of the power management chip through diodes;
the power output terminal is electrically connected with an output pin of the power management chip and is used for supplying power to a main control unit of the portable power supply;
Two terminals for connecting the photovoltaic power supply and the direct current power supply after mains rectification are respectively connected to the input end of the input control circuit through a diode;
The input control circuit is a voltage division and stabilizing circuit, and the output end of the input control circuit is connected with the enabling pin of the power management chip;
The control signal terminal is connected with an enabling pin of the power management chip and used for grounding control of the enabling pin.
2. The secondary power supply circuit of the portable power supply according to claim 1, wherein the voltage dividing and stabilizing circuit comprises a first resistor, a second resistor, a first voltage stabilizing tube and a first switching tube;
One end of the first resistor is connected with the input end of the voltage dividing and stabilizing circuit, and the other end of the first resistor is connected with the second resistor, the cathode of the first voltage stabilizing tube and the control end of the first switching tube; the second resistor, the anode of the first voltage stabilizing tube and the circuit ground are connected.
3. The secondary power supply circuit of a portable power supply as claimed in claim 2, wherein: the first switching tube is an N-channel MOS tube.
4. The secondary power supply circuit of a portable power source as claimed in claim 1, wherein said control signal terminal is connected to one end of a manual control switch, and the other end of said manual control switch is connected to circuit ground.
5. The secondary power supply circuit of a portable power supply as claimed in claim 1, wherein: the power management chip also includes a feedback pin.
6. The secondary power supply circuit of a portable power supply as claimed in claim 1, wherein: the power management chip is a DC-DC conversion chip.
7. A portable power supply comprises a mains supply input terminal, a photovoltaic power supply input terminal, an AC/DC module, a DC/DC module, a battery, a main control unit and a secondary power supply circuit; the portable power supply circuit is characterized in that the secondary power supply circuit is a portable power supply secondary power supply circuit according to any one of claims 1 to 6 and supplies power to the main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323264120.6U CN221574911U (en) | 2023-11-29 | 2023-11-29 | Portable power supply and secondary power supply circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323264120.6U CN221574911U (en) | 2023-11-29 | 2023-11-29 | Portable power supply and secondary power supply circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221574911U true CN221574911U (en) | 2024-08-20 |
Family
ID=92290221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323264120.6U Active CN221574911U (en) | 2023-11-29 | 2023-11-29 | Portable power supply and secondary power supply circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221574911U (en) |
-
2023
- 2023-11-29 CN CN202323264120.6U patent/CN221574911U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207304403U (en) | A kind of Switching Power Supply | |
| CN103064376B (en) | Centrally connected power supply rack-mount unit functional module hot plug-pull control system | |
| CN102668347A (en) | Start-up supply | |
| CN110048607A (en) | A kind of conversion circuit and implementation method of seamless switching boosting and straight-through operating mode | |
| CN110071630A (en) | A kind of conversion circuit and implementation method of seamless switching decompression and straight-through operating mode | |
| CN111614143B (en) | Single-port adjustable charge-discharge circuit | |
| CN221574911U (en) | Portable power supply and secondary power supply circuit thereof | |
| CN102611174A (en) | Intelligent power management system and realizing method thereof | |
| CN118523472A (en) | Intelligent building photovoltaic power supply system | |
| CN109639118B (en) | Self-powered circuit of switching power supply, control chip, switching power supply and electric device | |
| CN213073192U (en) | Low-power-consumption constant-current control circuit | |
| CN212412826U (en) | Solar energy power supply | |
| CN209767367U (en) | self-powered circuit and control chip of switching power supply, switching power supply and electrical device | |
| CN103683892A (en) | Switching power supply and controller thereof | |
| CN111525822B (en) | Switching power supply controller, switching power supply system and switching power supply system power supply method | |
| CN212061818U (en) | Display device | |
| CN111048055B (en) | Display and display standby power consumption control method | |
| CN208285221U (en) | A kind of power supply built-up circuit of electrical equipment mainboard | |
| CN114546092A (en) | Computer intelligence power supply system | |
| CN207926250U (en) | A kind of synthesis is for electric installation | |
| CN219107300U (en) | Voltage-multiplying power supply circuit | |
| CN221151363U (en) | Communication module circuit, power-down reporting system and equipment | |
| CN219740035U (en) | Standby power supply control circuit | |
| CN218514134U (en) | Power supply circuit with shared battery and external power supply and electronic equipment with same | |
| CN117769074B (en) | Intelligent control circuit of diode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |