CN202395499U - Multifunctional small mobile power station - Google Patents

Abstract

The utility model discloses a multifunctional small-sized mobile power station, which comprises a direct current input module, an intelligent DC-DC module, a lithium battery pack and an intelligent management system thereof, an intelligent DC-DC module and an output module which are connected in sequence, wherein the modules, the lithium battery pack and the management system thereof are integrated in a main box body, so that the volume of the mobile power station is reduced, the mobile power station is convenient to carry, the direct current input module can adopt one or more combinations of an AC-DC module, a solar cell panel, a manipulator rocking type power generation module and a vehicle-mounted power supply, the lithium battery pack can be timely kept to have sufficient electric quantity for standby, and complete self-supporting power supply in the field can be realized; the output module can adopt one or more combinations of a universal interface seat, an inverter and a wireless charging emitter, meets the requirements of various electric equipment and has the advantage of diversified functions; the module main bodies can be connected according to needs to be combined for use, so that the assembly and the maintenance are convenient, and the use efficiency of products can be improved.

Description

Multifunctional small mobile power station

technical field

The utility model relates to power supply equipment, in particular to a multifunctional small mobile power station.

Background technique

The mobile power station is a device that provides services for outdoor power supply. The mobile power station series has a variety of structures and functions, such as automobile power stations, trailer power stations; mobile low-noise power stations, mobile container power stations, etc. A power station can actually be regarded as a power source or a power generation system that supplies power to electrical equipment. In the prior art, there are various forms of power stations. For example, Chinese patent document CN 201332367 Y discloses a "solar mobile power station", which is a hybrid power supply system composed of solar photovoltaic cells and diesel generators. The solar photovoltaic cells are installed on Adjacent top and sides of a container. All its equipment is placed inside the container, and an efficient and fast-moving power supply system is formed by combining a solar power generation system and a diesel power generation system. It mainly uses the photovoltaic effect to convert solar energy into direct current through solar photovoltaic cells, and then converts direct current into alternating current through the solar grid-connected inverter to track the frequency and phase of the output power of the bidirectional inverter, which is directly used by the load; The electric energy generated by the photovoltaic cell exceeds the load of the electric load, and the excess electric power will be converted into direct current through the bidirectional inverter and stored in the battery pack; when the electric energy generated by the solar photovoltaic cell cannot meet the load of the electric load, the battery pack will pass through The bidirectional inverter outputs electric energy to supplement; if it still cannot meet the electricity demand, it will be supplemented by a diesel generator.

However, the mobile power stations in the prior art have relatively single functions, are not easy to carry, and cannot meet the needs of daily production and life, especially when traveling, it is very inconvenient to carry.

Utility model content

The purpose of the utility model is to solve the problem that the function of the traditional mobile power station is relatively single, and provide a multifunctional small mobile power station, which has the advantages of portability and various functions.

The utility model also provides a control method of the multifunctional small mobile power station, which is simple and easy to realize.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A multifunctional small mobile power station, comprising:

DC input module, AC input DC;

DC-DC module, connected with the DC input module, used for conversion between different DC voltage values;

Lithium battery pack to store the input direct current;

The lithium battery management system is connected with the lithium battery to manage the charging and discharging of the lithium battery;

DC-DC module, connected with lithium battery pack management system;

The output module is connected with the DC-DC module to connect various electric loads;

The above-mentioned modules are connected in sequence and integrated into a main box;

The DC-DC module can be used for direct current input or output as needed, and is directly connected to the load when used for output.

Preferably, the DC input module adopts one or a combination of AC-DC modules, solar panels, mechanical hand-operated power generation modules, and vehicle power supplies.

Preferably, the lithium battery pack and each module are installed at the bottom of the main box, each battery of the lithium battery pack is isolated by a structural member, and ventilation and heat dissipation ports are provided on the structural member.

Preferably, the output module adopts a combination of one or more of DC-DC modules, universal interface sockets, inverters, and wireless charging transmitters, and the DC-DC module is controlled by an MCU to realize the control of input and output states. switch.

Preferably, the solar cell panel is a foldable solar cell panel, and is installed on the inner shell panel of the main box.

Preferably, the lithium battery pack is also provided with a battery status display system to monitor the charging and discharging status and capacity status of the battery in real time.

Preferably, the inverter is a 300W sine wave inverter, which can directly supply power to low-power AC equipment.

Preferably, the main box is made of nylon and glass fiber plastic material.

The beneficial effects of the utility model are: by connecting the DC input module, DC-DC module, lithium battery pack and its management system, DC-DC module, and output module in sequence, and integrating them into a main box, the mobile power station The volume is reduced, the cost is reduced, and it is easy to carry. At the same time, the DC input module can use one or more combinations of AC-DC modules, solar panels, mechanical hand-operated power generation modules, and vehicle power supplies to realize real-time Keep the lithium battery pack with sufficient power for backup, which can realize complete self-supply power supply in the field; the output module can use one or more combinations of universal interface socket, inverter, and wireless charging transmitter to meet the needs of various electrical equipment. It has the advantages of diversified functions; the main bodies of the above-mentioned modules can be connected and used in combination according to the needs, and can be assembled very conveniently, which is beneficial to maintenance and improves the use efficiency of the product.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a control principle block diagram of the multifunctional small mobile power station described in Embodiment 1;

Fig. 2 is a control principle block diagram of the multifunctional small mobile power station described in Embodiment 2;

Fig. 3 is a schematic diagram of the structure of the battery status display system described in the third embodiment;

FIG. 4 is a schematic diagram of the execution flow of the battery status display system shown in FIG. 3;

5 is a circuit diagram of the lithium battery pack management system described in Embodiment 4;

Fig. 6 is a circuit diagram of the control module described in the fourth embodiment.

In the picture:

1. Status display system; 2. Electronic device; 10. 12. Display unit; 14. Status display control module; 20. Rechargeable battery; 22. Charging control unit;

100. Sampling module; 200. Discharging level processing circuit; 300. Charging level processing circuit; 400. Single-chip microcomputer; 500. Discharging control module; 600. Charging control module; 700. AD converter.

Detailed ways

As shown in Figure 1, in Embodiment 1, the multifunctional small mobile power station of the present invention includes a DC input module, an intelligent DC-DC module, a lithium battery pack and its intelligent management system, and an intelligent DC-DC Module, output module, and the above-mentioned modules, lithium battery pack and its management system are integrated in a main box, which reduces the volume of the mobile power station and is easy to carry. Among them, the lithium battery pack is installed at the bottom of the main box, and each battery of the lithium battery pack is isolated by a structural member, and a ventilation and heat dissipation port is provided on the structural member, which is similar in structure to a notebook and can be separated from the main box. Easy to replace and expand.

Among them, the intelligent DC-DC module has input and output functions, and adopts MCU control to realize the switching of input and output states. In the input state, the DC input module inputs DC power, and the DC-DC module converts different DC voltage values. When outputting, it acts as a transformer; when outputting, the DC-DC module can be directly connected to the electrical load, and at this time, it acts as an adapter.

The battery pack can choose batteries with different capacities according to needs, such as 15Ah, 25Ah, 40Ah, etc., the voltage is 14.4, and all the batteries are imported batteries, which have the advantages of high safety and accuracy.

The main box is made of nylon and glass fiber plastic material. The product volume is 500*350*50mm. It is small in size and weighs from 2.5kg to 4.5kg depending on the configuration.

A control method for a multifunctional small mobile power station includes the following steps:

Step A: Input DC power through the DC input module;

Step B: the direct current is converted by the DC-DC module;

Step C: The converted direct current enters the lithium battery pack management system to prepare for charging and discharging the lithium battery pack;

Step D: DC is stored in the lithium battery pack;

Step E: At the same time, the direct current enters the DC-DC module from the lithium battery pack management system to convert direct current;

Step F: The converted current enters the output module from the DC-DC module, and flows to the electric load or is directly output to the load by the DC-DC module.

As shown in Figure 2, in the second embodiment, the multifunctional small mobile power station of the present invention includes a DC input module, an intelligent DC-DC module, a lithium battery pack and its intelligent management system, an intelligent DC-DC Module, output module, and the above-mentioned modules, lithium battery pack and its management system are integrated in a main box, which reduces the volume of the mobile power station and is easy to carry.

Among them, the DC input module includes an AC-DC module, a solar panel, and a mechanical hand-operated power generation module. The solar panel is preferably a foldable solar panel, which is installed on the inner shell panel of the main box, and can be extended in series and parallel as required. Use solar energy to generate power and charge the battery; the main box is equipped with a mechanical hand-operated power generation module interface, and the mechanical hand-operated power generation module can be installed as needed to generate power and charge the battery; when it is indoors, it can be directly Use the AC-DC module to charge the battery, and the main body of each module can be connected and combined according to the needs of the actual use environment, or can be used alone. It can be easily assembled, easy to maintain and improve the use efficiency of the product. At the same time, the on-board power supply can also be used for charging as needed. By combining the above-mentioned DC input modules as needed, the lithium battery pack can be kept with sufficient power in a timely manner, and complete self-supply power supply can be realized in the field.

The lithium battery intelligent management system manages the charging and discharging of the battery in real time, and sets various protection parameters for the battery to prevent the battery from overcharging, over-discharging, over-current, and over-temperature.

The lithium battery pack is also equipped with a battery status display system to display battery voltage, capacity, charge and discharge current, remaining capacity and other battery status information, so that users can intuitively know the real-time usage status of the battery.

The output module includes a universal interface base, an inverter, and a wireless charging transmitter. The universal interface base can charge mobile phone batteries, digital camera batteries, digital video cameras, netbooks, notebooks and other electrical loads indoors and outdoors; when some equipment needs to use When using AC power, such as a computer, it can be converted into AC power by an inverter and output to the electric device; the wireless charging transmitter adopts the QI standard of the Wireless Alliance, which can provide wireless signals and can be directly connected to wireless charging receiving devices, such as PDDV, PS3, NDSi, NDSL, Xbox, iphone, iPad and other digital wireless compatible products printed with QI mark, the main body of each device can be connected and combined according to needs, or used alone, which can be easily assembled, easy to maintain and improve the use of products efficiency.

Preferably, the inverter is a 300W sine wave inverter. When there is no AC power in the field, the 300W inverter can be used for emergency power supply of small AC appliances.

Preferably, the DC-DC module has a multi-channel output circuit, and the corresponding output circuit has a multi-channel output interface, and a current limiting circuit is set inside it to make it also have a current limiting function. Since the current of some electrical equipment needs to be limited to a certain Within a range, for example, MP3, MP4 and other digital products can limit the output current from 0 to 2A, and at the same time, the DC-DC module also has an adapter function, which can be directly connected to the electrical load, and also has a USB interface and DC5.5 ＊2.1 socket interface.

The control method of the multifunctional small mobile power station described in this embodiment includes the following steps:

Step A: Input DC power through AC-DC module, solar power generation module, and mechanical hand-operated power generation module;

Step B: the direct current is converted by the DC-DC module;

Step C: The converted direct current enters the lithium battery pack management system to prepare for charging and discharging the lithium battery pack;

Step D: DC is stored in the lithium battery pack;

Step E: At the same time, the direct current is transferred from the lithium battery pack management system to another DC-DC module for direct current conversion;

Step F: The converted current enters the universal interface socket, inverter, and wireless charging transmitter from the DC-DC module, and is finally output to the power load or directly output to the load by the DC-DC module.

As shown in Figures 3 to 4, in the third embodiment, a specific embodiment of the battery status display system is given, and the system is applied in the electronic device 2 having a charging control unit 22 for charging the rechargeable battery 20. , the electronic device is a lithium battery pack management system, the battery status display system 1 includes: two display units 10, 12 for displaying the operating status of the charging control unit 22; and for detecting the charging control unit 22, and control the actions of the two display units 10, 12 according to the detected operating state, so as to use the two display states of the two display units 10, 12 and the mixed display of the two display states One of the display states corresponds to the state display control module 14 that displays the operating state of the charging control unit 22 .

The two display units are two light-emitting diodes (LEDs) with different wavelengths, and the two display states refer to the luminescent colors of the two display units, and the mixed display state of the two display states refers to the two display states. The luminous color of the display unit after the luminous color is mixed. The method for implementing the battery state display system is: firstly detect the operating state of the charging control unit, and use one of the two display states and the display state mixed by the two display states according to the detected operating state Or correspondingly display the operating status of the charging control unit.

As shown in Figures 5-6, in Embodiment 4, a specific embodiment of a lithium battery pack management system is given. The lithium battery pack is composed of eight battery packs in series, and each battery pack is composed of eight lithium batteries in series. The management system includes a sampling module 100, a magnetic isolation module, a level processing circuit, a single-chip microcomputer 400, a control module, and a switch circuit, and each sampling module collects the voltage signal of each battery pack.

The input end of the sampling module 100 is connected with the two ends of the lithium battery, the output end of the sampling module 100 is respectively connected with the level processing circuit and the magnetic isolation module through the I2C bus, and the magnetic isolation module is connected with the input end of the single-chip microcomputer 400 through the I2C bus, and the control The module has two control signal input terminals, the output terminal of the level processing circuit is connected to one control signal input terminal of the control module, the output terminal of the single-chip microcomputer 400 is connected to another control signal input terminal of the control module, and the output terminal of the control module is connected to the other control signal input terminal of the control module. The input ends of the switch circuit are connected, one end of the output end of the switch circuit is connected to the battery pack through the sampling resistor RI, and the other end is connected to the load.

Among them, the sampling module 100 is used to collect the charging and discharging voltage values at both ends of the lithium battery and the sampling terminal voltage of the sampling resistor, and send the overcharge, overdischarge, short circuit, and overcurrent signals to the level processing circuit and send the signals to the Magnetic isolation module, preferably, the chip model of sampling module 100 is OZ8920; Single-chip microcomputer 400 is used for receiving the digital signal of the sampling module that magnetic isolation module has processed through I2C bus line, judges, and output signal to control module; Level processing circuit It is used to receive the overcharge, overdischarge, short circuit and overcurrent signals sent by the sampling module, and output the signals to the control module; the control module is used to simultaneously receive the control signal output by the single chip microcomputer and the control signal output by the level processing circuit for logical judgment. The output signal is sent to the switch circuit; the switch circuit is used to receive the logic signal output by the control module to connect or disconnect the charging and discharging circuit.

Specifically, the level processing circuit is composed of a charging level processing circuit 300 and a discharging level processing circuit 200, the control module is composed of a charging control module 600 and a discharging control module 500, and the charging control module 600 and the discharging control module 500 have two Two control signal input terminals, the output terminals of the charging level processing circuit and the single-chip microcomputer are respectively connected with the two control signal input terminals of the charging control module, the output terminals of the discharge level processing circuit and the single-chip microcomputer are respectively connected with the two control signal input terminals of the discharge control module connect.

The switch circuit is composed of a discharge field tube DEFT and a charge field tube CEFT connected in series. The grid of the discharge field tube DEFT is connected to the output terminal of the discharge control module, the source is connected to the sampling resistor, and the grid of the charge field tube CEFT is connected to the charge control module. The output terminal is connected, and the source is connected to the load.

Further, the discharge level processing circuit 200 includes a triode Q1 and a photocoupler, wherein the photocoupler is composed of a light emitter and a light receiver, the light emitter is a light emitting diode, the light receiver is a photodiode, and the sampling module 100 The output end of the triode is connected to the base of the triode Q1, the collector of the triode Q1 is connected to the anode of the light-emitting diode, the cathode of the light-emitting diode is grounded, and the collector of the photosensitive diode is connected to the anode of the diode D11, The anode of the diode D11 is connected to the working power supply through a resistor, the emitter of the photodiode is grounded, the cathode of the diode D11 is connected to the input port of the discharge control module 500, and the discharge level processing circuit 200 is based on the command sent by the sampling module The discharge control module 500 is controlled.

Further, the charge level processing circuit 300 includes a triode Q2 and a photocoupler, wherein the photocoupler is composed of a light emitter and a light receiver, the light emitter is a light emitting diode, the light receiver is a photodiode, and the sampling module 100 The output terminal of the transistor Q2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to the cathode of the light-emitting diode, the anode of the light-emitting diode is connected to the power supply, the emitter of the transistor Q2 is grounded, and the collector of the photosensitive diode The electrode is connected to the anode of the diode D12, the anode of the diode D12 is connected to the working power supply through a resistor, the emitter of the photodiode is grounded, the cathode of the diode D12 is connected to the input port of the charging control module 600, and the charging level The processing circuit 300 controls the charging control module 600 according to the command sent by the sampling module 100 .

The control module is composed of two triodes Q3 and Q4, the bases of the two triodes are respectively the two input terminals of the control module, the emitters of the two triodes are connected to ground, and the collectors of the two triodes are connected Afterwards, it is connected with the working power supply to become the output end of the control module.

When the lithium battery pack is in a normal state, the input of the sampling module 100 to the discharge level processing circuit 200 is a high level, the triode Q1 is turned on, the photocoupler is turned on, the diode outputs a low level, and the input terminal DO of the discharge control module 500 /S receives a low level, the discharge control module 500 controls the discharge field tube DFET to cut off; the sampling module 100 inputs the charging level processing circuit 300 to a low level, the triode Q2 is turned on, the photocoupler is turned on, and the diode outputs a low voltage Ping, the input terminal CO/S of the charging control module 600 receives a low level, and the charging control module 600 controls the charging field tube CFET to turn off.

When the sampling module 100 detects an overcurrent, overvoltage, short circuit, or overtemperature state in the lithium battery pack, the sampling module 100 outputs a low level, and any one of the sampling modules outputs a low level to the discharge level processing circuit 200, and the photoelectric coupling The device is cut off, the diode outputs a high level, and the input port DO/S of the discharge control module 500 receives a high level signal. When the sampling module 100 detects that the lithium battery pack has overvoltage or overtemperature, any one of the sampling modules 100 outputs to the charging level processing circuit 300 in a high-impedance state, the photocoupler is cut off, the diode outputs a high level, and the charging control module 600 input port CO/S receives high level signal.

The sampling module 100 simultaneously transmits the sampling signal to the single-chip microcomputer 400 through the AD converter 700. When the lithium battery pack is in a normal state, the single-chip microcomputer 400 transmits the sampling signal to the charge control module 600 and the discharge control module 500 according to logic judgment. When the battery pack has overcurrent, overvoltage, short circuit, or overtemperature, the single-chip microcomputer 400 is sent to the discharge control module 500 to be at a high level; flat.

When any one of the two input ports of the discharge control module 500 receives a high-level signal or both input ports receive a high-level signal, the discharge control module outputs a high level, the discharge field tube DFET is turned on, and the charge control module When any one of the two input ports of the 600 receives a high-level signal or both input ports receive a high-level signal, the charging control module outputs a high level, and the charging field tube CFET is turned on.

In this embodiment, the lithium battery pack management system adopts dual control. The single-chip microcomputer receives the signal of the acquisition module, and controls the charging field tube and the discharging field tube through logical judgment. At the same time, the sampling module controls the charging field tube and the discharging field tube through the drive control module After the control is carried out, and the synthesis circuit synthesizes the two signals, even if there is a problem with one of the controls, the other control can still ensure the control of the charging field tube and the discharging field tube, which increases the stability of the system.

It should be stated that the above-mentioned specific implementation methods are only preferred embodiments of the present utility model and the applied technical principles. Within the technical scope disclosed in the present utility model, any changes or changes that are easily conceivable by those skilled in the art Replacement should be covered within the protection scope of the present utility model.

Claims (8)

1. A multifunctional small mobile power station, characterized in that it comprises: DC input module, AC input DC; DC-DC module, connected with the DC input module, used for conversion between different DC voltage values; Lithium battery pack to store the input direct current; The lithium battery management system is connected with the lithium battery to manage the charging and discharging of the lithium battery; DC-DC module, connected with lithium battery pack management system; The output module is connected with the DC-DC module to connect various electric loads; The above-mentioned modules are connected in sequence and integrated into a main box; The DC-DC module can be used for direct current input or output as needed, and is directly connected to the load when used for output. 2. The multifunctional small mobile power station according to claim 1, wherein the DC input module adopts one or more of AC-DC modules, solar panels, mechanical hand-operated power generation modules, and vehicle-mounted power supplies. combination. 3. The multifunctional small mobile power station according to claim 1, wherein the lithium battery pack and each module are installed at the bottom of the main box, and each battery of the lithium battery pack is isolated by a structural member. , and set ventilation and heat dissipation openings on the structural parts. 4. The multifunctional small mobile power station according to claim 1, wherein the output module adopts one or more combinations of DC-DC modules, universal interface sockets, inverters, and wireless charging transmitters , and the DC-DC module is controlled by MCU to realize the switching of input and output states. 5. The multifunctional small mobile power station according to claim 2, wherein the solar cell panel is a foldable solar cell panel, and is installed on the inner shell panel of the main box. 6. The multifunctional small mobile power station according to claim 3, wherein the lithium battery pack is also provided with a battery status display system. 7. The multifunctional small mobile power station according to claim 4, wherein the inverter is a 300W sine wave inverter. 8. The multifunctional small mobile power station according to any one of claims 1 to 7, wherein the main box is made of nylon and glass fiber plastic material.

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