CN206685956U - A kind of modular small solar energy storage device with data transfer - Google Patents

Abstract

The utility model discloses a modular small solar energy storage device with data transmission, which comprises a solar power supply module, a battery management module, a lithium battery component, a voltage monitoring module and a data transmission module. The output of the solar power supply module The terminal is connected to the input terminal of the battery management module, the battery management module is connected to the lithium battery assembly, the output terminal of the lithium battery assembly is connected to the voltage monitoring module, and the output terminal of the voltage monitoring module is connected to the data transmission module. The utility model has the advantages that all components are modularized, and the configuration is simple and reasonable; the voltage monitoring module and the data transmission module can detect the real-time voltage value of the solar power supply module, and the data can be transmitted to the designated position through the communication interface, and the storage The system data can be transmitted together with the monitoring data, and the staff can more clearly understand the power consumption of different loads in different regions, which is convenient for adjusting the system design.

Description

A modular small solar energy storage device with data transmission

technical field

The utility model relates to the technical field of photovoltaic energy storage, in particular to a modular small solar energy storage device with data transmission.

Background technique

At present, solar cells are widely used in power stations, monitoring, street lamps, lawn lamps, etc. because of their huge resources, clean and pollution-free, and easy installation. In practical applications, general energy storage devices for solar cells are lead-acid batteries, lithium batteries, supercapacitors, etc. For lead-acid batteries, they are bulky, not conducive to installation, have a short service life, and cannot supply normal power to loads in harsh winter weather. Therefore, lithium batteries are smaller in size and lighter in weight due to the same capacity. However, due to the complexity of the lithium battery system and high cost, its application has also received certain limitations.

In the prior art, the monitoring system using crystalline silicon solar cells as power supply equipment and storage battery as energy storage equipment has short service life, bulky size and heavy weight, and the charging capacity of the system is insufficient under weak light conditions, resulting in low utilization rate of solar energy. high. The main reason is that the monocrystalline silicon solar cell does not generate current or generates a small current under low irradiation, and cannot charge the lead-acid battery, which reduces the system efficiency to 50% to 60%, especially in places with more haze days . In addition, the general lifespan of lead-acid batteries is 2 to 3 years, and the service life is short. Photovoltaic off-grid systems using lead-acid batteries as energy storage power sources cannot start normally even in harsh winter weather, and the weight of monocrystalline silicon battery components is relatively heavy. Places such as high mountains are not easy to transport, the labor cost is high, the safety is low, and the maintenance cost is high.

In the prior art, the Chinese utility model patent announced as 205212526U discloses a "long-term integrated power supply system based on thin-film solar cells", "including thin-film photovoltaic modules, supercapacitor modules, charge and discharge controllers, voltage regulators An energy storage device composed of modules and lithium battery components, the output end of the thin-film photovoltaic module is connected to the input end of the supercapacitor module, the output end of the supercapacitor module is connected to the input end of the charge-discharge controller, and the charge-discharge controller The output end of the solar cell is connected to the voltage stabilizing module; the lithium battery assembly is connected to the charge and discharge controller; the thin film photovoltaic assembly is a flexible or rigid thin film solar cell; the rated voltage of the thin film photovoltaic assembly is higher than the maximum of the lithium battery assembly Voltage."

Although, the prior art proposes a light, high-efficiency, and long-life long-term integrated power supply system based on thin-film solar cells, which can make full use of the low-light power generation of thin-film photovoltaic modules and the low-voltage chargeability of supercapacitors, and has high efficiency. The advantages of weak light power generation and high overall system efficiency. However, in the prior art, the utilization rate of the lithium battery cannot be detected, the working data of the lithium battery cannot be clearly grasped, the power consumption and system stability of different loads in different regions are not understood, and it is not convenient to adjust the system design, resulting in unreasonable design. To a certain extent, it causes a waste of resources. It is not easy to repair and maintain, and there are potential safety hazards.

Utility model content

The purpose of the utility model is to provide a modular small-scale solar energy storage device with data transmission, which can effectively solve the problems in the prior art that the utilization rate of lithium batteries cannot be detected and the design of different load adjustment systems in different regions cannot be used.

In order to solve the above technical problems, the utility model is realized through the following technical solutions: a modular small solar energy storage device with data transmission, including a solar power supply module, a battery management module, a lithium battery assembly, a voltage monitoring module and A data transmission module, the output end of the solar power supply module is connected to the input end of the battery management module, the battery management module is connected to the lithium battery assembly, and the output end of the lithium battery assembly is connected to the A voltage monitoring module, the output end of the voltage monitoring module is connected to the data transmission module.

Preferably, the solar power supply module includes a solar cell, a supercapacitor and a first voltage stabilizing module, the solar cell and the supercapacitor are connected in series to the battery management module, and the supercapacitor is connected in parallel with the first voltage stabilizing module. Supercapacitors can not only improve the working efficiency of solar cells, but also improve the energy storage efficiency of solar power supply modules; the first voltage stabilization module can use the difference in solar radiation to prolong the service time of solar power supply modules when the intensity of sunlight decreases .

Preferably, the charging method of the supercapacitor for the battery management module is a PWM three-segment pulse method, and the PWM three-segment pulse method includes current charging, voltage charging and float charging. The PWM three-stage pulse charging method is adopted, which simplifies the hardware circuit, reduces the hardware cost, and reduces the impact damage to the battery.

Preferably, the solar cell includes a direct bandgap semiconductor, and the solar cell is a flexible or rigid thin film solar cell. Direct bandgap semiconductors have better low-light performance, and the sunlight time is longer than monocrystalline silicon solar cells at the same power. Flexible thin-film solar cells can reduce the weight of the power system and increase power generation; rigid thin-film solar cells have more High photoelectric conversion efficiency.

Preferably, the battery management module includes a battery management module, a dynamic monitoring module and a second voltage stabilizing module, the battery management module is connected to a solar power supply module, and a dynamic monitoring module is connected to the battery management module to monitor the The voltage of the solar power supply module, and the battery management module is also connected to the load through the second voltage stabilizing module. The dynamic monitoring module is used to monitor the voltage of the solar cell; the second voltage stabilizing module can improve the working stability of the load.

Preferably, the voltage detection module includes a control group, a wiring group, an acquisition group, a display group and a communication group, with compact structure, small size, light weight, easy installation, and overvoltage, undervoltage, and phase loss protection functions.

Preferably, the voltage monitoring module is wired or wirelessly connected to the data transmission module. The voltage monitoring module and the data transmission module are connected by wire, and the signal transmission effect is good; the voltage monitoring module and the data transmission module are wirelessly connected, and the installation is convenient.

Preferably, both the solar power supply module and the battery management module are fixed in a functional box, the functional box includes a box cover and a box body, the box cover is detachably connected to the box body, and the side wall of the box body An input connector, an output connector and a working connector are provided, and the input connector and the output connector are detachably electrically connected. The box cover is detachably connected with the box body, and the installation and fixing of the solar power supply module and the battery management module are convenient; The installation is complete when the input head of the box is connected, and the operation is simple.

Preferably, the four sides of the bottom of the box cover are provided with elastic fasteners, the fasteners are provided with grooves, and the four inner side walls of the box body are provided with protrusions, when the box cover and the box body When fixed, the protrusions are snapped into the grooves, and the side walls vertically below each of the protrusions are provided with through holes for assisting in opening the lid. Insert the protrusion on the cover body into the groove of the cover box to fix the cover box and the cover body firmly; there is a through hole on the side wall vertically below each protrusion, and use a needle bar to pass through the through hole Open the fastener to separate the box cover from the box body, which is easy to operate.

Preferably, the upper part of the protrusion is an arc-shaped chamfer, and the lower part of the protrusion is a right-angle chamfer. The upper part of the protrusion is an arc-shaped chamfer. When fixing the box cover, it is convenient for the lower part of the fastener to pass through the protrusion so that the protrusion snaps into the groove on the fastener; the lower part of the protrusion is a right-angle chamfer so that the protrusion It cooperates more firmly with the fastener to prevent the lid from being opened accidentally.

Compared with the prior art, the utility model has the advantages that: the output end of the solar power supply module is connected to the input end of the battery management module, the battery management module is connected with the lithium battery assembly, and all components are modular design, which is simple to configure, Reasonable and easy to maintain; the output end of the lithium battery module is connected to a voltage monitoring module, and the output end of the voltage monitoring module is connected to a data transmission module. The energy storage system data and monitoring data are transmitted together through the communication interface to the designated location, which facilitates real-time observation by the staff. The staff can more clearly understand the power consumption of different loads in different regions, and it is convenient to adjust the system design.

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is a schematic diagram of interconnection of functional boxes;

Fig. 3 is a schematic diagram when the lid and the box body are opened;

Fig. 4 is a schematic diagram when the box cover and the box body are closed.

detailed description

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

As shown in Figure 1, a modular small solar energy storage device with data transmission includes a solar power supply module 1, a battery management module 2, a lithium battery assembly 3, a voltage monitoring module 5 and a data transmission module 6, the The output end of the solar power supply module is connected to the input end of the battery management module, the battery management module is connected to the lithium battery assembly, the output end of the lithium battery assembly is connected to a voltage monitoring module, and the output end of the voltage monitoring module is connected to the data The transmission module, the voltage monitoring module and the data transmission module are wired or wirelessly connected.

The solar power supply module includes a solar battery 11, a supercapacitor 12 and a first voltage stabilizing module 13. The solar battery and the supercapacitor are connected in series to the battery management module, and the supercapacitor is connected in parallel with the first voltage stabilizing module. The supercapacitor charges the battery management module in a PWM three-segment pulse mode, and the PWM three-segment pulse mode includes current charging, voltage charging and float charging. The PWM three-stage pulse charging method is adopted, which simplifies the hardware circuit, reduces the hardware cost, and reduces the impact damage to the battery. The use of supercapacitors can improve the working efficiency of solar cells and at the same time improve the energy storage efficiency of solar systems. The supercapacitor can be used as an intermediate energy buffer unit to effectively avoid the unstable characteristics of solar battery power generation, improve the power quality of the lithium battery, prolong the service life of the lithium battery, and reduce the later cost.

Solar cells include direct bandgap semiconductors, which have better weak light performance and longer sunlight hours than monocrystalline silicon solar cells at the same power. Solar cells are flexible or rigid thin-film solar cells. Flexible thin-film solar cells can reduce the weight of power supply systems and increase power generation; rigid thin-film solar cells have higher photoelectric conversion efficiency. The voltage detection module includes control group, wiring group, acquisition group, display group and communication group. It has compact structure, small size, light weight, easy installation, and has overvoltage, undervoltage and phase loss protection functions.

The battery management module includes a battery management module 22, a dynamic monitoring module 24 and a second voltage stabilizing module 23, the battery management module is connected with the solar power supply module, and the battery management module is connected with a dynamic monitoring module for monitoring the solar power supply. The battery management module is also connected to the load 4 through the second voltage stabilizing module.

As shown in Fig. 2, Fig. 3 and Fig. 4, the solar power supply module and the battery management module are all fixed in the functional box, and the functional box includes a box cover 71 and a box body 72, and the four sides at the bottom of the box cover are all provided with Elastic fasteners 711, grooves 712 are provided on the fasteners, protrusions 721 are provided on the four inner side walls of the box body, and when the lid and the box body are fixed, the protrusions snap into In the groove, a through hole 722 is opened on the side wall vertically below each of the protrusions for assisting in opening the lid. An input connector, an output connector and a working connector are provided on the side wall of the box body, and the input connector and the output connector are detachably electrically connected. The input connector is an aviation plug, and the output connector is an aviation socket. The aviation plug and the aviation plug are conveniently connected, and can also play a waterproof and anti-corrosion effect. The working connector is an N-shaped connector for connecting loads or lithium battery components. The upper part of the protrusion is an arc-shaped chamfer, and the lower part of the protrusion is a right-angle chamfer. The upper part of the protrusion is an arc-shaped chamfer. When fixing the box cover, it is convenient for the lower part of the fastener to pass through the protrusion so that the protrusion snaps into the groove on the fastener; the lower part of the protrusion is a right-angle chamfer so that the protrusion It cooperates more firmly with the fastener to prevent the lid from being opened accidentally. There is a screen window on the box cover, which is convenient for charging the solar battery and can prevent impurities from falling into the functional box. There is also a metal button on the box body for controlling the switch of the solar power supply module or the battery management module.

The utility model detects the voltage of the solar power supply module through the voltage monitoring module, and transmits the detected data to the control center or mobile terminal through the data transmission module. The transmission mode adopted can be through wired serial port communication, or wireless 3G/GSM, CDMA, wifi, bluetooth, sent in the form of star network or SMS to help the staff grasp the data situation in real time. Affected by solar radiation in different regions, the usage of the same load is also different. Adding a voltage detection and data transmission module can observe the usage in different regions in real time. By adjusting the size of the solar cells in the module and adjusting the system configuration more reasonably, the cost of the system can be greatly saved, and at the same time, it can meet some application fields that require stable work.

The above is only a specific embodiment of the utility model, but the technical characteristics of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are all covered by the utility model. In the scope of the new patent.

Claims (9)

1. A kind of 1. modular small solar energy storage device with data transfer, it is characterised in that：Including solar powered module (1), battery management module (2), lithium battery pack (3), voltage monitoring module (5) and data transmission module (6), the solar energy The output end of module (1) of powering connects the input of the battery management module (2), the battery management module (2) with it is described Lithium battery pack (3) is connected, and lithium battery pack (3) output end is connected with the voltage monitoring module (5), the voltage Monitoring modular (5) output end is connected with the data transmission module (6).
2. A kind of 2. modular small solar energy storage device with data transfer according to claim 1, it is characterised in that The solar powered module (1) includes solar cell (11), super capacitor (12) and the first Voltage stabilizing module (13), it is described too It is positive can battery (11) with being connected battery management module (2) after the super capacitor (12) series connection, on the super capacitor (12) simultaneously It is associated with first Voltage stabilizing module (13).
3. A kind of 3. modular small solar energy storage device with data transfer according to claim 2, it is characterised in that Described solar cell (11) is flexible or rigid thin-film solar cells.
4. A kind of 4. modular small solar energy storage device with data transfer according to claim 1, it is characterised in that The battery management module (2) includes battery management module (22), dynamic monitoring module (24) and the second Voltage stabilizing module (23), institute State battery management module (22) to be connected with solar powered module (1), battery management module is connected with dynamic monitoring mould on (22) For block (24) to monitor the voltage of the solar powered module (1), battery management module (22) also passes through the second Voltage stabilizing module (23) it is connected with load (4).
5. A kind of 5. modular small solar energy storage device with data transfer according to claim 1, it is characterised in that The voltage detection module (5) includes control group, wiring group, collection group, display group and communication set.
6. A kind of 6. modular small solar energy storage device with data transfer according to claim 1, it is characterised in that The voltage monitoring module (5) and data transmission module (6) wired or wireless connection.
7. A kind of 7. modular small solar energy storage device with data transfer according to claim 1, it is characterised in that The solar powered module (1) and battery management module (2) are each attached in function box, and the function box includes lid (71) With box body (72), the lid (71) is detachably connected with box body (72), and box body (72) side wall is provided with input adapter (73), out splice going splice (74) and working joint, the input adapter (73) and the out splice going splice (74) detachably electrically connect.
8. A kind of 8. modular small solar energy storage device with data transfer according to claim 7, it is characterised in that Four sides of lid (71) bottom are all provided with flexible fastener (711), and groove (712) is provided with the fastener (711), described Raised (721) are equipped with four madial walls of box body (72), when lid (71) and fixed box body (72), the projection (721) it is caught in the groove (712), being provided with through hole (722) in the side wall of each raised (721) vertical lower section is used for Assisting in opening lid (71).
9. A kind of 9. modular small solar energy storage device with data transfer according to claim 8, it is characterised in that The top of the projection (721) is arc angling, and the bottom of the projection (721) is right angle chamfering.